CN103889277A

CN103889277A - Sitting tool and chair

Info

Publication number: CN103889277A
Application number: CN201280052109.9A
Authority: CN
Inventors: 枡井祥光
Original assignee: Teng Tian Tuo Mo
Current assignee: Teng Tian Tuo Mo
Priority date: 2011-10-23
Filing date: 2012-10-18
Publication date: 2014-06-25
Also published as: EP2769645A1; JPWO2013061552A1; US20140290667A1; EP2769645A4; JP6091423B2; WO2013061552A1

Abstract

Provided are a sitting tool and a chair that naturally improve the sitting posture of a seated person, making comfortable sitting possible. This sitting tool (1) is provided with a seat board (3). The seat board (3) is provided with a first sitting surface (21) and a second sitting surface (22) that is continuous with the first sitting surface (21) and extends towards the front of the sitting tool. The second sitting surface (22) is formed to have a different level, which is higher than the first sitting surface (21), by the first sitting surface side end face (221). When the buttocks of the seated person is supported by the first sitting surface (21) and the upper part of the thighs of the seated person is supported by the second sitting surface (22), the level difference restricts the ischium of the seated person to move forward. The first sitting surface (21) extends across the entire width of the seat board (3) in the left-right direction of the sitting tool without being obstructed by any level differences.

Description

Seat tool and chair

Technical field

The present invention relates to a tool and chair.

Background technology

Due to being widely used of personal computer, comprise that those most of staff that are engaged in civilian post work are forced to bend over one's desk working for a long time.In this case, in recent years, a lot of people suffer from the disease such as backache and back confirmed fatigue.In many cases, backache and back confirmed fatigue etc. are caused by the posture of taking one's seat of duration of work.Figure 17 (a) and 17 (b) are the schematic diagrames that a part for staff's skeleton in the time that staff is sitting on chair is shown.In Figure 17 (a) and 17 (b), for the purpose of simplifying the description, omit the leg section of chair 7.

Figure 17 (a) illustrates staff's desirable posture.In this posture, pelvis 91 is supported by seat board 71 and backboard 73, thereby is erectility.As a result, backbone 92 has formed the similar S-shape of the shape curve of backbone while standing with human body, thereby has reduced the pressure on pelvis 91 or backbone 92.During continuous operation, keep the S-shape curve of backbone 92 to alleviate to a great extent staff's backache and back confirmed fatigue etc.

But, be difficult to keep for a long time this ideal posture, and in the long course of work, the seat state that staff's pelvis 91 can spontaneously be gone forward side by side as shown in Figure 17 (b) to front slide.In these cases, backbone 92 presses to backboard 73, and backbone 92 can not keep S-shape curve.In the time keeping above-mentioned posture for a long time, pelvis 91 or backbone 92 are caused to excessive compressing, thereby cause backache and back confirmed fatigue etc.Although in the time that staff often consciously keeps the seat appearance shown in Figure 17 (a), may avoid the posture shown in Figure 17 (b), but in fact, staff is absorbed in the work of oneself, and they are not recognized in the posture shown in Figure 17 (b).

Patent documentation 1 has proposed a kind of seat board and backboard sweptback chair simultaneously.According to proposed chair, by seat board and the backboard of receding, pelvis presses down toward back plate and enters erectility in the effect of body weight, thereby causes compressing to reduce.

Reference listing

Patent documentation

Patent documentation 1: Japanese uncensored Patent Application Publication No.H10-57178

Summary of the invention

(technical problem)

But even by recede for the seat board of the chair of taking one's seat and backboard so that pelvis reaches erectility simultaneously, now backbone also can press to backboard.Therefore natural S-shape curve like the class of a curve while, being difficult to keep standing with human body.Therefore, staff can not keep this posture for a long time, and finally can feel tired.Use such chair also to produce side effect: in the time looking at the display in staff front straight, can cause excessive compressing to staff's neck.Simultaneously, in the field of the elementary education such as kindergarten, primary school, because bone is still in jejune state of development, although preferably consider to make the student of kindergarten and children keep appropriate posture, but in fact, be difficult to force the student of kindergarten and children to keep for a long time appropriate posture.

In view of the foregoing conceive the present invention, and the object of the present invention is to provide a kind of posture and seat tool and the chair of the comfort level of taking one's seat can be provided of taking one's seat that can automatically improve seated person.

(technical scheme of dealing with problems)

For realizing the following aspect that the present invention is characterized in of above-mentioned purpose.

A first aspect of the present invention is a kind of seat tool, and it comprises seat board, and described seat board comprises:

The first seat surface; And

The second seat surface, extend continuously in its front that is facing described seat tool from described First, wherein

Described the second seat surface has formed the step higher than described the first seat surface by means of the end face in described the first seat surface one side of being arranged in of described the second seat surface,

In the time that described the first seat surface supports the buttocks of seated person and described the second seat surface and supports the thigh top of described seated person, the ischium that described step suppresses described seated person moves forward, and

Described the first seat surface extends and not hindered by described step across the whole length of described seat board along the left and right directions of described seat tool.

According to seat tool of the present invention, the ischium that has suppressed seated person due to step moves forward, so the posture of taking one's seat of seated person is improved automatically.

In addition,, because the first seat surface extends and not hindered by described step across the whole length of seat board along the left and right directions of described seat tool, therefore, step can not cause compressing to the left and right side of the buttocks of seated person, and the first seat surface supports the buttocks of seated person.As a result, seated person can comfortablely be taken one's seat, and can on buttocks, not experience constriction.

In the seat tool for a first aspect of the present invention, be preferably arranged in described end face in described the first seat surface one side bending or the flexing in top view of described the second seat surface become towards the described front projection of described seat tool.

Said structure makes it possible to the trickle individual difference of the ischium position that absorbs seated person and more effectively improves the posture of taking one's seat of seated person.In addition, because step in top view also coincide with the contour shape of ischium, so seated person is sat more comfortablely.

In the seat tool for a first aspect of the present invention, be also preferably placed at described the second seat surface described end face in the region except the zone line of the left and right directions of described seat tool, in described the first seat surface one side of being arranged in of described the second seat surface maximum length on the fore-and-aft direction of described tool and be less than the maximum length of described the first seat surface on the described fore-and-aft direction of described tool.

Because there is said structure, thus prevent that the thigh top of seated person from pressing to the second seat surface in large area, and seated person comfortable taking one's seat for a long time.In addition, seat tool is configured to quite compact.

In the seat tool for a first aspect of the present invention, go back the maximum length of preferred described the first seat surface on the fore-and-aft direction of described seat tool in 70mm arrives the scope of 250mm, and

Be arranged in described the second seat surface region, except described the second seat surface is arranged in the described end face in described the first seat surface one side except the zone line of the left and right directions of described seat tool maximum length on the described fore-and-aft direction of described tool and be less than or equal to 150mm.

Because there is said structure, due to the preferred size of the first seat surface, thus guarantee that size enough allows the buttocks of seated person to be placed on the first seat surface, and the posture of taking one's seat of seated person improves, and prevented that the seat tool from moving forward simultaneously.So prevented that the thigh top of seated person from pressing to the second seat surface in large area, and seated person comfortable taking one's seat for a long time.In addition, seat tool is configured to quite compact.

In a preferred example, also comprise for the seat tool of a first aspect of the present invention: backboard, its end described the first seat surface one side of being arranged in of described seat board is extended and generally perpendicularly extends with respect to described seat board at least in part.

Because there is said structure, so even do not exist near the rumpbone of seated person and with respect to want the horizontal plane of placement rack tool generally perpendicularly to extend wall time, the posture of taking one's seat of seated person also can improve.

In another preferred exemplary, also comprise supporter for the seat tool of a first aspect of the present invention, it supports described seat board, and described supporter comprises:

Base plate, described seat board is placed on described base plate; And

Backboard, its end described first seat surface one side that is arranged in described seat board of described base plate is extended and generally perpendicularly extends with respect to described base plate at least in part.

Because there is said structure, so even do not exist near the rumpbone of seated person and with respect to want the horizontal plane of placement rack tool generally perpendicularly to extend wall time, the posture of taking one's seat of seated person also can improve.In addition, in the time that seat board and supporter form as separating component, absorb seated person pelvic dimensions trickle individual difference and more effectively improve the posture of taking one's seat of seated person.

A second aspect of the present invention is chair, and it comprises seat board, backboard and leg section, and described seat board comprises:

The first seat surface; And

The second seat surface, extend continuously in its front that is facing described chair from described First, wherein

Described backboard be arranged in generally perpendicularly extending with respect to described the first seat surface at least in part above in described seat board one side,

Described the second seat surface forms the step higher than described the first seat surface by means of the end face in described the first seat surface one side of being arranged in of described the second seat surface,

In the time that described the first seat surface supports the buttocks of seated person and described the second seat surface and supports the thigh top of described seated person, the ischium that described step suppresses described seated person moves forward, and the described rumpbone that suppresses described seated person above of described backboard moves backward

Described the first seat surface extends and not hindered by described step across the whole length of described seat board along the left and right directions of described chair, and

Be arranged in described end face in described the first seat surface one side bending or the flexing in top view of described the second seat surface become the front projection towards described chair.

Chair according to a second aspect of the invention, the ischium that suppresses seated person due to step moves forward, so the posture of taking one's seat of seated person is improved automatically.

In addition,, because the first seat surface extends and not hindered by described step across the whole length of seat board along the left and right directions of chair, therefore, step can not cause compressing to the left and right side of the buttocks of seated person, and the first seat surface supports the buttocks of seated person.As a result, seated person can comfortablely be taken one's seat, and can on buttocks, not experience constriction.

In addition, because be arranged in end face in the first seat surface one side bending or the flexing in top view of the second seat surface become the front projection towards chair, so absorbed the trickle individual difference of ischium position of seated person and the position of taking one's seat of more effectively improving seated person.In addition, because step in top view also coincide with the contour shape of ischium, so seated person is sat more comfortablely.

A third aspect of the present invention is chair, and it comprises seat board, backboard and leg section, and described seat board comprises:

The first seat surface; And

The maximum length of described the first seat surface on the fore-and-aft direction of described chair, and is arranged in described the second seat surface described end face region, in described the first seat surface one side of being arranged in of described the second seat surface except the zone line of the described left and right directions of described chair maximum length on the described fore-and-aft direction of described chair and is less than or equal to 150mm in the scope of 250mm at 70mm.

According to the chair for a third aspect of the present invention, due to the preferred size of the first seat surface, thus guarantee that enough sizes are placed on the first seat surface with the buttocks that allows seated person, and the posture of taking one's seat of seated person improves.In addition, prevented that the thigh top of seated person from pressing to the second seat surface in large area, and seated person comfortable taking one's seat for a long time.In addition, chair is configured to quite compact.

(beneficial effect of the present invention)

According to the present invention, provide a kind of posture and seat tool and the chair of the comfort level of taking one's seat can be provided of taking one's seat that can automatically improve seated person.

Brief description of the drawings

Below, further describe with reference to the accompanying drawings the present invention, wherein:

Fig. 1 is the stereogram illustrating according to the embodiment 1 of seat tool of the present invention;

Fig. 2 is along the line A-A in Fig. 1, the sectional view of use state of the seat tool shown in Fig. 1 is shown;

Fig. 3 is the stereogram illustrating according to the embodiment 2 of seat tool of the present invention;

Fig. 4 is the stereogram illustrating according to the embodiment 3 of seat tool of the present invention;

Fig. 5 is the stereogram illustrating according to the embodiment 4 of seat tool of the present invention

Fig. 6 is the stereogram illustrating according to the embodiment 5 of seat tool of the present invention;

Fig. 7 is the stereogram illustrating according to the embodiment 6 of seat tool of the present invention;

Fig. 8 is the stereogram illustrating according to the embodiment 7 of seat tool of the present invention;

Fig. 9 is the stereogram illustrating according to the embodiment 8 of seat tool of the present invention;

Figure 10 is the stereogram illustrating according to the embodiment 9 of seat tool of the present invention;

Figure 11 be illustrate according to the embodiment 10 of seat of the present invention tool with and the stereogram of the state of use;

Figure 12 (a) is the stereogram that the embodiment 11 of seat tool of the present invention is shown, and Figure 12 (b) is the sectional view along the seat tool of the line C-C in Figure 12 (a);

Figure 13 is the stereogram illustrating according to the embodiment 1 of chair of the present invention;

Figure 14 is along the line B-B in Figure 13, illustrates that human body is sitting in the sectional view of the state in the chair shown in Figure 13;

Figure 15 is the stereogram illustrating according to the embodiment 2 of chair of the present invention;

Figure 16 is the stereogram illustrating according to the embodiment 3 of chair of the present invention; And

Figure 17 (a) and 17 (b) are the longitdinal cross-section diagrams that schematically illustrated human body is sitting in the state in conventional chair, and Figure 17 (a) illustrates that human body keeps the longitdinal cross-section diagram of the state of best posture, and Figure 17 (b) is the longitdinal cross-section diagram that the unbalanced state of human posture is shown.

Detailed description of the invention

< seat tool >

Hereinafter, with reference to Fig. 1-12, provide according to the description of the embodiment 1-11 of seat tool of the present invention.Note, embodiment described below is only example, and the present invention is not limited to this.

[embodiment 1]

First,, with reference to Fig. 1 and 2, provide according to the description of the embodiment 1 of seat tool of the present invention.Fig. 1 is the stereogram illustrating according to the embodiment 1 of seat tool of the present invention.Fig. 2 is along the line A-A in Fig. 1, the sectional view of use pattern of the seat tool shown in Fig. 1 is shown.

Seat tool 1 in the present embodiment is used in human body and wants in the bending knee chair of taking one's seat etc., and is made up of single seat board 3.Seat board 3 comprises that the user of a tool 1 will sit superincumbent seat surface 2.Seat surface 2 comprises the first seat surface 21 and the second seat surface 22.That is to say, the first seat surface 21 and the second seat surface form single seat surface 2.The second seat surface 22 extends towards the front of seat tool 1 continuously from the first seat surface 21.The second seat surface 22 has the inclined end face 221 being arranged in the first seat surface 21 1 sides, and the second seat surface 22 on end face 221 with the first seat surface 21 adjacency.The end face 221 being arranged in the first seat surface 21 1 sides of the second seat surface 22 is parts of the second seat surface 22, and this part is formed by slope, and the height on this slope declines towards the first seat surface 21 from the second seat surface 22.Form than the high step of the first seat surface 21 by means of end face 221, the second seat surfaces 22 that are arranged in the first seat surface 21 1 sides.Except the stage portion forming by means of end face 221, the first seat surface 21 and the second seat surface 22 also comprise the face of the approximate horizontal of almost parallel configuration each other.In description herein, the face of approximate horizontal included in the second seat surface can be called to " interarea ", wherein the face of this approximate horizontal has formed the major part of the second seat surface, and is adjacent to the end face (inclined-plane) being arranged in the first seat surface one side.

, the width of seat tool 1 is called to left and right directions below, and the length direction of seat tool 1 (corresponding with the degree of depth and successively through the direction of the first seat surface 21, end face 221 and interarea 10) is called to fore-and-aft direction.Left and right directions and fore-and-aft direction are orthogonal.One side of more close second seat surface 22 of fore-and-aft direction is called to front or front side, and the opposite side of more close first seat surface 21 of fore-and-aft direction is called as to rear or rear side.As the following description will become clear, word " left and right directions ", " front (side) ", " rear (side) " are seen with seated person " left and right directions ", " front (side) ", " rear (side) " are corresponding.

Above-mentioned statement " face of approximate horizontal " not only comprises the face of complete level, also comprises the face with the slight bending matching with the shape on buttocks or thigh top.Particularly, in the time that the first seat surface 21 comprises slight bending, preferably only on left and right directions the width of tool 1 (present on) but not be provided with difference in height on fore-and-aft direction of the first seat surface 21.In these cases, the first seat surface 21 has with the cambered surface of the large footpath cylinder extending along the fore-and-aft direction of seat tool 1 similarly bending.In other words, the first seat surface 21 has along the left and right directions of seat tool 1 and bends and recessed cambered surface occurs at the middle part of the tool 1 of being present.One of the curved surface that the first seat surface 21 can have is exemplified as 1800R (arc-shaped curved surface that radius of curvature is 1800mm).But curved surface is not limited to this example especially.The second seat surface 22 also can have with the bending of the first seat surface 21 similarly bending.Note, above set bending quite little, and therefore, be arranged in the one of the first seat surface 21 and the second seat surface 22 even bending, the first seat surface 21 is also still parallel with the second seat surface 22.

" thigh top " refers to the part in groin one side that is arranged in of human body thigh herein.

The end face (inclined-plane) 221 being arranged in the first seat surface 21 1 sides of the second seat surface 22 extends along left and right directions straight line.The first seat surface 21 extends and not hindered by step across the whole length of seat board 3 along the left and right directions of seat tool 1.That is to say, the pelvis 91 that anything suppresses seated person is not set on the left and right side of the first seat surface 21.

Seat board 3 can be by combination (for example, adhering to each other) multiple assemblies formation, wherein, the single component that these multiple assemblies have plate shape by cutting forms, or is formed by thermoplastic elastomer (TPE) (TPE) or the rubber etc. of metal forming.In the time that seat board 3 is formed by multiple assemblies, a part for a part for the first seat surface 21 and the second seat surface 22 for example can be formed by different assemblies.As long as produce difference in height, end face 221 is just not limited to inclined-plane and can be any, and this is because 221 of end faces arrange for forming step.

Then,, with reference to Fig. 2, provide according to the description of the beneficial effect of the seat tool 1 of the present embodiment.In the description with reference to Fig. 2, described bone near seat tool 1 and wall 8 although following, they only illustrate for the ease of understanding.In fact, for example, between bone and seat tool 1 and have bodily tissue (, muscle and skin etc.) between bone and wall 8, and bone certainly can not be directly near seat tool 1 and wall 8.

As shown in Figure 2, seat tool 1 is placed on horizontal plane 9, when use, this tool is in following state: the hinder marginal part 211 of the first seat surface 21 contacts or adjacent surface pair with upwardly extending wall 8, and wherein, hinder marginal part is positioned in that side relative with the second seat surface 22 of the first seat surface 21.Near the extension of the hinder marginal part 211 of the first seat surface 21 that wall 8 herein can only comprise from seat tool 1.Horizontal plane 9 herein can only be from wall 8 through the rumpbone of seated persons to knee dorsal part (popliteal space) anterior position horizontal-extending.Here, seated person is sitting on a tool 1 with the rectangular state of its knee general curved, and therefore pelvis 91 is not forced to press to wall 8, and to stretch the situation of taking one's seat different from knee for these.As a result, the posture of taking one's seat is improved automatically.

For example, in the time that seat tool 1 is used in the chair of the wall etc. that is built in building, wall 8 and horizontal plane 9 correspond respectively to the wall of wall and are arranged on the dull and stereotyped roof in wall.In addition, in the time that seat tool 1 is used in chair (not shown), wall 8 and horizontal plane 9 correspond respectively to this chair backboard before the seat surface of (towards the surface of seated person) and seat board.In the time that seat tool 1 is used on the care bed with leaning device (not shown), wall 8 and horizontal plane 9 correspond respectively to angled back panel above and the seated surface of seat board.

In above-mentioned state, when seated person is placed on buttocks while being placed on the second seat surface 22 on the first seat surface 21 and by thigh top, the first seat surface 21 supports the buttocks of seated person, and the second seat surface 22 supports the thigh top of seated person.Now, a pair of left and right ischium 911 and 911 and the step adjacency that forms by means of end face 221, and step suppresses ischium 911 and 911 and moves forward (moving towards the second seat surface 22), and wherein, left and right ischium is positioned at the below of the pelvis 91 of seated person.Meanwhile, rumpbone 912 and wall 8 adjacency, and the suppressing rumpbone 912 above and move backward of wall 8, wherein, rumpbone is positioned at the rear (below) of pelvis 91.Therefore, by the step that makes to form by means of end face 221 and wall 8 support a pair of ischium 911 and 911 and rumpbone 912 by (being called as below " 3 stationary states "), stablize pelvis 91.As a result, prevent that pelvis 91 (along the direction towards the second seat surface 22) from moving to the front of seat tool 1, and seated person unlikely becomes the posture shown in Figure 17 (b).Because the final posture of seated person is improved automatically, so backbone 92 keeps best S-shape curve for a long time, and backache and back confirmed fatigue etc. have obtained alleviation.In addition,, because the CBF that flows to brain increases, notice is also improved.

The first seat surface 21 extends and not hindered by step across the whole length of seat board 3 along the left and right directions of seat tool 1.In other words, the pelvis 91 that anything suppresses seated person is not set on the left and right side of the first seat surface 21.Therefore, step can not cause compressing to the left and right side of the buttocks of seated person, and the first seat surface 21 supports the buttocks of seated person.As a result, seated person can comfortablely be taken one's seat, and can on buttocks, not experience constriction.In addition, according to above-mentioned the first seat surface 21, even when the buttocks of seated person is suspended in outside the left and right side of the first seat surface 21, as long as the length of the left and right directions of step is greater than or equal to the distance between a pair of

ischium

911 and 911,3 stationary states also will be realized without any problems.Therefore, the length of the left and right directions of step can be reduced to is roughly for example the distance between a pair of

ischium

911 and 911, and can seat tool 1 be constructed compactlyer.

As mentioned above, because the first seat surface 21 is approximate horizontal, thus guarantee that the step forming by means of end face 221 locks a pair of

ischium

911 and 911, thus pelvis 91 stably fixed.As previously mentioned, word " approximate horizontal " not only comprises horizontal plane, also comprises the cambered surface with slight bending.

Because a seat tool 1 is stablized the posture of pelvis 91 by comprising the step forming by means of end face 221, so preferably the shape of the first seat surface 21 and the second seat surface 22 can not change and maintain shape and the shoulder height of end face 221 under the body weight effect of seated person.From the point of view, seat board 3 by unlikely under user's body weight effect extruded material make.Some examples of these materials comprise wood materials, high density cloth (for example, being not easy the canvas of contraction), thermoplastic elastomer (TPE) (TPE), rubber, plastic material (for example, EVA resin) etc.

In the time that thermoplastic elastomer (TPE), rubber or plastic material are used as to this material, the hardness of this material is preferably in 5 to 120 scope." hardness " herein refers to the hardness that uses the A type hardness tester meter of specifying in JIS K6253 to obtain by the measuring method according to JIS K6253.By hardness being set in above-mentioned scope, can suitably guarantee the comfort level of seated person, prevent owing to using for a long time seat board 3 to cause seat board 3 to produce less desirable distortion simultaneously.From similar viewpoint, hardness is more preferably in 40 to 90 scope.The hardness of at least a portion (stage portion particularly forming by means of end face 221) of the second seat surface 22, preferably in above-mentioned preferable range, particularly in above-mentioned preferred scope.

The first seat surface 21 has prevent that a tool 1 is because of the function being squeezed and moving forward from the body weight effect of buttocks transmission.Therefore, the length of the fore-and-aft direction of the first seat surface 21 (, the length L from the hinder marginal part 211 of the first seat surface 21 to the lower end of end face 221 ₁) should the body weight of long enough to accept to transmit from buttocks.But, on the other hand, when the length L of the fore-and-aft direction of the first seat surface 21 ₁when too large, may not can realize 3 stationary states of pelvis 91.From the point of view, the length L of the fore-and-aft direction of the first seat surface 21 ₁preferably in 70mm arrives the scope of 250mm.More specifically, for example, for adapting to have the masculinity and femininity adult of standard figure, the length L of the fore-and-aft direction of the first seat surface 21 ₁preferably in 100mm arrives the scope of 200mm, more preferably in 150mm arrives the scope of 170mm.For example,, in order to adapt to primary school's age or young children, length L ₁preferably in 70mm arrives the scope of 150mm.Bend to rearwardly projecting old man's etc. the posture of taking one's seat in order to improve as much as possible backbone 92, length L ₁also preferably in 200mm arrives the scope of 250mm.

The second seat surface 22 has the thigh top by support seated person on interarea 10 and regulates the function of the displacement forward of a pair of ischium 911 and 911 by forming the step forming by means of end face 221.In this connection, when the length of the fore-and-aft direction of the interarea 10 of the second seat surface 22 (, the length L from the exterior region 222 of the second seat surface 22 to the upper end of end face 221 ₂) when too large, the thigh top of seated person presses to the second seat surface 22 in large area.From the point of view, the length L of the fore-and-aft direction of the interarea 10 of the second seat surface 22 ₂preferably be less than or equal to 150mm, be more preferably less than or equal 90mm, and be even more preferably less than or equal 40mm.On the other hand, when the length L of the fore-and-aft direction of the interarea 10 of the second seat surface 22 ₂too hour, in the case of using the material that hardness is relatively little, the second seat surface 22 is easily deforming from the body weight effect of seated person transmission, and in the case of using the relatively large material of hardness, a part for the second seat surface 22 is pressed into the thigh top of seated person, and the degree of comfort decreased of seated person.From the point of view, the length L of the fore-and-aft direction of the interarea 10 of the second seat surface 22 ₂be preferably greater than or equal 3mm.

As previously mentioned, because lock a pair of

ischium

911 and 911 and lock rumpbone 912 and stably fix the pelvis 91 of seated person by wall 8 by seat tool 1, so the displacement of the fore-and-aft direction of seat tool 1 itself will reduce the effect of stably fixing pelvis 91.Therefore, preferably the reverse side 11 of present tool 1 arranges known shoe (not shown).For example, can by make the reverse side 11 of a tool 1 form male and fomale(M&F), by Anti-skid sheet being bonded to the reverse side 11 of a tool 1 or by the reverse side 11 that adhesive is applied to a tool 1, shoe being set.

In the time that the step forming by means of end face 221 is too high, the people who is sitting on a tool 1 can feel uncomfortable.On the other hand, in the time that the step forming by means of end face 221 is too low, a pair of

ischium

911 and 911 tends to cross this step, and can not suppress fully pelvis 91 and move forward.The height H of the step forming by means of end face 221 from the point of view, ₁preferably in 3mm arrives the scope of 30mm, more preferably in 3mm arrives the scope of 20mm, and even more preferably in 8mm arrives the scope of 15mm.

In addition the angle θ between end face 221 and the first seat surface 21, ₁while reducing, the people who is sitting on a tool 1 can feel more uncomfortable.On the other hand, as angle θ ₁when too large, a pair of

ischium

911 and 911 tends to cross step, and can not suppress fully pelvis 91 and move forward.From the point of view, the angle θ between end face 221 and the first seat surface 21 ₁preferably in the scope of 90 ° to 165 °, more preferably in the scope of 90 ° to 140 °, and even more preferably in the scope of 90 ° to 120 °.

The length W of the left and right directions of end face 221 ₁(, the length of the left and right directions of the first seat surface 21 in the example of Fig. 1) need to be greater than the distance between a pair of ischium 911 and 911.But, from making the viewpoint of a tool 1 compactness, length W ₁preferably in 100mm arrives the scope of 500mm, more preferably in 150mm arrives the scope of 400mm, and even more preferably in 250mm arrives the scope of 300mm.

In addition, in view of the corresponding function of above-mentioned the first seat surface 21 and end face 221, the length L of the fore-and-aft direction of the first seat surface 21 ₁the preferably length W of the left and right directions of end face 221 ₁0.40 to 0.60 times, more preferably 0.46 to 0.51 times.Equally, in view of the interarea 10 of above-mentioned the second seat surface 22 and the corresponding function of end face 221, the length L of the fore-and-aft direction of the interarea 10 of the second seat surface 22 ₂the preferably length W of the left and right directions of end face 221 ₁0.01 to 0.26 times, more preferably 0.01 to 0.10 times.

Be configured to its floor projection according to a seat tool 1 of embodiment 1 rectangular, and therefore the length of the left and right directions of seat tool 1 is constant from the exterior region 222 of seat tool 1 to hinder marginal part 211.But the floor projection shape of seat tool 1 is not limited to rectangle, and can be any shape, for example, the combination of a part for circular, oval, trapezoidal and fan shape or these shapes.Therefore, the length of left and right directions of seat tool 1 can be present and be changed between the exterior region 222 of tool 1 and hinder marginal part 211.

Do not bend to curved surface along the left and right directions of seat tool 1 at the edge part of extension between the interarea 10 of the second seat surface 22 and end face 221, and it is pointed to be formed as the region shown in Fig. 2.Owing to thering is said structure, so prevented that the ischium 911 of seated person from crossing edge part and moving to front slide and on the second seat surface 22.

According to embodiment 1, on horizontal plane 9, make simply the hinder marginal part 211 of a tool 1 contact by seat tool 1 is placed on simultaneously or adjacent surface to wall 8, seated person has just been realized 3 stationary states comfortable taking one's seat simultaneously, and the posture of taking one's seat of seated person is proofreaied and correct.

In addition,, according to the first embodiment, in the time that user is placed on horizontal plane 9 by seat tool 1, can regulate the distance between wall 8 and seat tool 1.Therefore,, even in the time that the size of the pelvis 91 from a user to another user changes, also can realize 3 stationary states.

In addition, seat tool 1 is compacter than chair, and is easy to deposit and carry.

Due to the convenience of seat tool 1, seat tool 1 can be used in various chairs.For example, seat tool 1 can be used in the chair that is built in building, office chair, chair lift, wheelchair etc. for the chair nursed or bed, tables and chairs, public bench, vehicle seat, aircraft seat, skifield.

In addition, the end face 221 being arranged in the first seat surface 21 1 sides of the second seat surface 22 can replace inclined-plane to form by the concave curvatures being recessed into forward or rearwardly projecting convex surface.

[embodiment 2]

Then,, with reference to Fig. 3, provide according to the description of the embodiment 2 of seat tool of the present invention.Fig. 3 is the stereogram illustrating according to the embodiment 2 of seat tool of the present invention.In the description of the present embodiment, some structures that the structure of omission and above-described embodiment and beneficial effect are overlapping and the description of beneficial effect, and difference has mainly been described.

Comprise seat board 3A and backboard 31 according to the seat tool 1A of the present embodiment.Seat board 3A has and forms the structure roughly the same according to the seat board 3 of the seat tool 1 of embodiment 1.Backboard 31 upwards and generally perpendicularly extends from the end (hinder marginal part 211) the first seat surface 21 1 sides end that side that the first seat surface 21 is relative with the second seat surface 22 that is arranged in of the first seat surface 21 of seat board 3A (, from) that is arranged in of seat board 3A with respect to seat board 3A.Seat board 3A and backboard 31 can form, or can form separately and by bonding or fastening etc. fastened to each other.Backboard 31 also can extend and only partly upwards and generally perpendicularly extend with respect to seat board 3A from the end being arranged in the first seat surface 21 1 sides of seat board 3A.

Wall 8 in the alternate embodiment 1 above of backboard 31 near and support the rumpbone 912 that is positioned at pelvis 91 belows, move backward thereby suppress pelvis 91.Because there is said structure, because having suppressed a pair of

ischium

911 and 911, the step forming by means of end face 221 moves forward, and due to above having suppressed rumpbone 912 and move backward of backboard 31, so the pelvis 91 of seated person is stabilized under 3 stationary states.From realizing the above-mentioned functions of backboard 31 and the viewpoint of compact seat tool 1A, backboard 31 is with respect to the height H of the first seat surface 21 ₂preferably in 50mm arrives the scope of 350mm, more preferably in 100mm arrives the scope of 210mm.In addition, in view of backboard 31 above and the corresponding function of end face 221, backboard 31 is with respect to the height H of the first seat surface 21 ₂the preferably length W of the left and right directions of end face 221 ₁(, the length of the left and right directions of the first seat surface 21 in Fig. 3 example shown) 0.16 to 1.16 times, more preferably 0.33 to 0.70 times.

Angle (, the angle θ above and between the first seat surface 21 of backboard 31 between backboard 31 and seat board 3A ₂) be preferably roughly right angle, thus realize 3 stationary states.Particularly, angle θ ₂preferably in the scope of 90 ° to 120 °, more preferably in the scope of 90 ° to 95 °.

Must by make the whole buttocks of seated person be contained in end face 221 and backboard 31 above between space in realize 3 stationary states.From the point of view, the length L of the fore-and-aft direction of the first seat surface 21 ₃preferably in 70mm arrives the scope of 250mm.More specifically, for example, in order to adapt to have the masculinity and femininity adult of standard figure, the length L of the fore-and-aft direction of the first seat surface 21 ₃preferably in 100mm arrives the scope of 200mm, more preferably in 150mm arrives the scope of 170mm.For example,, in order to adapt to the children at primary school's age or less age, length L ₃preferably in 70mm arrives the scope of 150mm.Bend to rearwardly projecting old man's etc. the posture of taking one's seat in order to improve as much as possible backbone 92, length L ₃also preferably in 200mm arrives the scope of 250mm.In addition, in view of the above-mentioned corresponding function of the first seat surface 21 and backboard 31, the length L of the fore-and-aft direction of the first seat surface 21 ₃preferably backboard 31 is with respect to the height H of the first seat surface 21 ₂0.70 to 0.90 times, more preferably 0.75 to 0.85 times.

According to embodiment 2, except the beneficial effect being provided by embodiment 1, even if do not exist with respect to the wall that will sit superincumbent horizontal plane upwards and generally perpendicularly extend, backboard 31 also can form the wall upwards and generally perpendicularly extending with respect to the first seat surface 21, thereby realizes 3 stationary states.

Although not shown, but also can form the lower seat board of the first seat surface 21 and the upper base plate that is arranged on this lower seat board top and forms the second seat surface 22 is constructed seat board 3A by use, and also adjusting device can be set and regulate the length L of the fore-and-aft direction of the first seat surface 21 ₃, wherein this adjusting device is constructed to after fore-and-aft direction moves upper base plate, be fixed on lower seat board.Because there is said structure, so even in the time that the size of a user and another user's pelvis 91 is different, also can realize 3 stationary states.For example,, by using hook-loop securing member to fix lower seat board and upper base plate to realize adjusting device.

Also can form separately seat board 3A and backboard 31 and with these plates that are coupled such as hinge (not shown), backboard 31 can be tilted forward or backward with respect to seat board 3A.Owing to having said structure, seat tool 1A is configured to folding, and this makes a tool 1A be easy to deposit.

[embodiment 3]

Then,, with reference to Fig. 4, provide according to the description of the embodiment 3 of seat tool of the present invention.Fig. 4 is the stereogram illustrating according to the embodiment 3 of seat tool of the present invention.In the description of the present embodiment, some structures that the structure of omission and above-described embodiment and beneficial effect are overlapping and the description of beneficial effect, and difference has mainly been described.

The the first seat surface 21B that comprises the buttocks that supports seated person according to the seat tool 1B of the present embodiment is as above back seat plate 12.The second seat surface 22B that seat tool 1B also comprises the thigh top of supporting seated person is as above concavo-convex 13, and this concavo-convex consists of multiple tubulose obturators 224 that are coupled along fore-and-aft direction.Back seat plate 12 and concavo-convex 13 by sew up or the coupling such as bonding to form seat board 3B.

The back seat plate 12 that comprises the first seat surface 21B preferably by unlikely under user's body weight effect extruded material make.Some examples of these materials comprise wood materials, high density cloth (for example, being not easy the canvas of contraction), thermoplastic elastomer (TPE) (TPE), rubber, plastic material (for example, EVA resin) etc.

In the time that thermoplastic elastomer (TPE), rubber or plastic material are used as to this material, the hardness of this material is preferably in 5 to 120 scope, more preferably in 40 to 90 scope.By hardness being set in above-mentioned preferable range, particularly, in above-mentioned preferred scope, can suitably guarantee the comfort level of seated person, prevent owing to using for a long time seat board 3B to make seat board 3B produce less desirable distortion simultaneously.

Each tubulose obturator 224 comprises pipe 223 and is inserted into the core 225 in pipe 223.Tubulose obturator 224 is for example by sewing up pipe 223 or be bonded together to be coupled.Pipe 223 for example, is made up of the material lower than the hardness of core 225 (, fabric).Core 225 for example, is made with the material (, ebonite rod, rubber tube and wooden stick etc.) of the body weight of bearing seated person by having sufficient intensity.

Core 225 can have cylinder form or Polygonal column shape shape, and the sag and swell of the second seat surface 22B is determined according to the shape and size of core 225.

The part inner space that in pipe 223, core 225 does not occupy can be filled with padded coaming.Some examples of padded coaming (for example comprise cotton, expanded material, sponge), thermoplastic elastomer (TPE) (TPE), rubber, plastic material (for example, EVA resin) or high density cloth, wherein all these materials have damping characteristics.Because there is said structure, so the comfort level of seated person improves.

By means of the end face 221B in the first seat surface 21B mono-side that is arranged in of the second seat surface 22B, form the step higher than the first seat surface 21B.Therefore, also comprise and suppress the step that a pair of

ischium

911 and 911 of seated person moves according to the seat tool 1B of the present embodiment.Be similar to according to the shoulder height H of the end face 221 of the seat tool 1 of embodiment 1 ₁, the shoulder height H of end face 221B ₃preferably in 3mm arrives the scope of 30mm, more preferably in 3mm arrives the scope of 20mm, and even more preferably in 8mm arrives the scope of 15mm.Because core 225 is present in the inside of tubulose obturator 224, so even in the time that a user of seat tool 1B is sitting in above tool, step also can not damage.

Be configured to its floor projection according to the seat tool 1B of embodiment 3 and be trapezoidal shape, and therefore, the length of the left and right directions of seat tool 1B reduces to hinder marginal part 211B gradually from exterior region 222B.For example, but the floor projection shape of seat tool 1 is not limited to trapezoidal shape, and can be any shape, rectangle or fan-shaped.

According to embodiment 3, because the pipe 223 of tubulose obturator 224 is made up of relatively soft material, so provide flexibility to the coupling unit between tubulose obturator 224.As a result, except the beneficial effect that embodiment 1 provides, also can in the time not use a tool 1B, roll concavo-convex 13 and be folded in coupling unit by concavo-convex 13 along fore-and-aft direction and sentence for depositing.

In addition, according to embodiment 3, because the second seat surface 22B is formed by the face of the pipe 223 be made up of relatively soft material, so the comfort level of seated person improves.

Meanwhile, the second seat surface 22B also can be formed by single tubulose obturator 224.

The second seat surface 22B also can for example, by using hollow member (, rubber hose) to replace tubulose obturator 224 to construct.

Core 225 can also bend to forward projection or backward projection extend along left and right directions straight line to replace.Because there is said structure, so tubulose obturator 224 also can bend to projection or protruding backward according to the shape of core 225.

Also can arrange in the hinder marginal part 211B of present tool 1B according to the backboard 31 of the seat tool 1A of embodiment 2.

[embodiment 4]

Then,, with reference to Fig. 5, provide according to the description of the embodiment 4 of seat tool of the present invention.Fig. 5 is the stereogram illustrating according to the embodiment 4 of seat tool of the present invention.In the description of the present embodiment, some structures that the structure of omission and above-described embodiment and beneficial effect are overlapping and the description of beneficial effect, and difference has mainly been described.

Comprise seat board 3C and the buffering suface member 4 above that is arranged in seat board 3C according to the seat tool 1C of the present embodiment.Seat board 3C has and forms the structure identical according to the seat board 3 of the seat tool 1 of above-described embodiment 1.That is to say, the first seat surface 21C and the second seat surface 22C that comprise in present tool 1C are formed by buffering suface member 4.Therefore, can improve the comfort level of seated person and also can during taking one's seat for a long time, alleviate the sense of fatigue on buttocks according to the seat tool 1C of the present embodiment.In the description of the present embodiment, omit the description of seat board 3C.

Surface member 4 is preferably for example, by (using for example fabric, high density cloth, expanded material, sponge), rubber, thermoplastic elastomer (TPE) (TPE), plastic material (for example, EVA resin) etc. formation, wherein all these materials have damping characteristics.

Surface member 4 has the thickness of constant on the whole, and the seat surface 2C being formed by surface member 4 be roughly parallel to seat board 3C above.Therefore, the shoulder height H of end face 221C ₄preferred value and end face 221C and the first seat surface 21C between angle θ ₃respectively with the shoulder height H of the end face 221 in tool 1 according to the seat of embodiment 1 ₁and angle θ between end face 221 and the first seat surface 21 ₁roughly the same.This is suitable for the length of the left and right directions of length, the end face 221C of the fore-and-aft direction of length, the interarea 10C of the fore-and-aft direction of the first seat surface 21C equally, and ratio between these length etc.

It should be noted that in seat tool according to the present invention, in the time that user is sitting on a tool, need to keep being arranged on the step on seat surface.Therefore, the material of adjusting range member 4 and thickness T ₁, make after end face 221C deforms because of the body weight of seated person, form the step of Desired Height.The thickness T of surface member 4 ₁an example of preferred value 1 in the scope of 15mm.

It is rectangular that seat tool 1C is formed its floor projection.But the floor projection shape of seat tool 1C is not limited to rectangle, and can be any shape, the combination of a part for for example circular, oval, trapezoidal and fan-shaped or these shapes etc.

According to embodiment 4, except the beneficial effect that embodiment 1 provides, the comfort level of seated person improves, and alleviated take one's seat for a long time during the sense of fatigue of buttocks.

In addition also can arrange in the hinder marginal part 211C of present tool 1C according to the backboard 31 of the seat tool 1A of embodiment 2.

[embodiment 5]

Then,, with reference to Fig. 6, provide according to the description of the embodiment 5 of seat tool of the present invention.Fig. 6 is the stereogram illustrating according to the embodiment 5 of seat tool of the present invention.In the description of the present embodiment, some structures that the structure of omission and above-described embodiment and beneficial effect are overlapping and the description of beneficial effect, and difference has mainly been described.

Be made up of single seat board 3D according to the seat tool 1D of the present embodiment, this is similar with the seat tool 1 according to embodiment 1.Seat board 3D with according to embodiment 1 seat tool 1 difference be that seat board 3D comprises towards the first seat surface 21D of the curved projection of the second seat surface 22D.In conjunction with said structure, in horizontal view the second seat surface 22D be arranged in end face 221D in the first seat surface 21D mono-side as stage portion towards front bend relief.Because there is above-mentioned step, so can fix a pair of

ischium

911 and 911 according to the seat tool 1D of the present embodiment,

ischium

911 and 911 is accepted by step, and also can be absorbed the trickle individual difference of ischium position of seated person and the position of taking one's seat of more effectively improving seated person.In addition, because step in top view also coincide with the contour shape of ischium, so seated person is sat more comfortablely.In top view, an example of the preferred radius value of end face 221D in the edge part of end face 221D front side arrives in the scope of 330mm 290.

Similar with the seat tool 1 according to embodiment 1, the first seat surface 21D extends and not hindered by step across the whole length of seat board 3D along the left and right directions of seat tool 1D.

It is rectangular that seat tool 1D is formed its floor projection.But the floor projection shape of seat tool 1D is not limited to rectangle, and can be any shape, for example, the combination of a part for circular, oval, trapezoidal and fan shape or these shapes etc.

According to embodiment 5, except the beneficial effect that embodiment 1 provides, also absorb the trickle individual difference of the ischium position of seated person, and more effectively improved the position of taking one's seat of seated person.In addition,, while also coincideing with the contour shape of ischium due to step in top view, seated person is sat more comfortablely.

As long as step in top view (that is, the second seat surface 22D is arranged in the end face 221D in the first seat surface 21D mono-side) is configured to towards front projection, above-mentioned beneficial effect will be realized.Therefore, the shape towards front projection of end face 221D is not limited to above-mentioned arc, and can be U-shape etc.In addition,, in top view, the end face 221D being arranged in the first seat surface 21D mono-side of the second seat surface 22D can be bending with the polygon projection towards front.

In addition can arrange in the hinder marginal part 211D of present tool 1D according to the backboard 31 of the seat tool 1A of embodiment 2.

[embodiment 6]

Then,, with reference to Fig. 7, provide according to the description of the embodiment 6 of seat tool of the present invention.Fig. 7 is the stereogram illustrating according to the embodiment 6 of seat tool of the present invention.In the description of the present embodiment, some structures that the structure of omission and above-described embodiment and beneficial effect are overlapping and the description of beneficial effect, and difference has mainly been described.

Comprise according to the seat tool 1E of the present embodiment the seat board 3E for example, forming by the folding thick cloth 5 (, square ground cushion or felt) that is not easy to shrink.As long as square ground cushion or felt are folding, this square ground cushion or felt can be by for example fabric, high density cloth, expanded material (for example, sponge), thermoplastic elastomer (TPE) (TPE), rubber, plastic material (for example, EVA resin) etc. make.Seat board 3E comprises the first seat surface 21E of the buttocks that supports seated person and supports the second seat surface 22E on the thigh top of seated person.In detail, seat tool 1E forms by following steps: thick cloth 5 is folded in half into two halves and towards the rear of seat tool 1E again by obtained folded part to folding to mid point, and bonding or sew up adjacent surface and fix under folded state then.As a result, the second seat surface 22E comprises rearwardly projecting convex surface 221E, as the end face in the first seat surface 21E mono-side that is arranged in of the second seat surface 22E.

Convex surface 221E forms step with respect to the first seat surface 21E, thereby a pair of

ischium

911 and 911 that is used for suppressing seated person moves forward.From the point of view, with according to the shoulder height H of end face 221 of the seat tool 1 of embodiment 1 ₁similar, the shoulder height H of convex surface 221E ₅preferably in 3mm arrives the scope of 30mm, more preferably in 3mm arrives the scope of 20mm, and even more preferably in 8mm arrives the scope of 15mm.

It is rectangular that seat tool 1E is formed its floor projection.For example, but the floor projection shape of seat tool 1E is not limited to rectangle, and can be any shape, trapezoidal.

According to embodiment 6, except the beneficial effect that embodiment 1 provides, because step forms by flipe 5, so seat tool 1E is not difficult to manufacture.In addition, because the seat surface of seat tool 1E for example, is made up of relatively soft material (, square ground cushion or felt), so the comfort level of seated person improves.

In addition also can arrange in the hinder marginal part 211E of present tool 1E according to the backboard 31 of the seat tool 1A of embodiment 2.

[embodiment 7]

Then,, with reference to Fig. 8, provide according to the description of the embodiment 7 of seat tool of the present invention.Fig. 8 is the stereogram illustrating according to the embodiment 7 of seat tool of the present invention.In the description of the present embodiment, some structures that the structure of omission and above-described embodiment and beneficial effect are overlapping and the description of beneficial effect, and difference has mainly been described.

Comprise seat board 3F according to the seat tool 1F of the present embodiment, it has and the shape roughly the same according to the shape of the seat tool 1 of embodiment 1.Seat board 1F comprises seat surface 2F, and seat surface 2F comprises the second seat surface 22F on the first seat surface 21F of the buttocks that supports seated person and the thigh top of support seated person.The second seat surface 22F comprises end face 221F and interarea 10F.

In seat tool 1F herein, end face 221F is formed by hard material seat board 230F with the part that is positioned at end face 221F front and rear, wherein this hard material seat board is made up of relatively hard material, and the part that is positioned at hard material seat board 230F rear is formed by soft material seat board 232F, wherein this soft material seat board is made up of the relatively soft material softer than hard material seat board 230F.Hard material seat board 230F and soft material seat board 232F fix by using binding agent bonding adjacent surface or sewing up adjacent surface.Hard material seat board 230F has formed single seat board 3F together with soft material seat board 232F.

Above hard material seat board 230F, at it, the mid portion along fore-and-aft direction comprises end face 221F.Above the part that is positioned at end face 221F rear above of hard material seat board 230F and soft material seat board 232F, form the first seat surface 21F.The remainder (end face 221F and interarea 10F) above of hard material seat board 230F forms the second seat surface 22F.Be similar to the seat board 3 forming according to the seat tool 1 of embodiment 1, hard material seat board 230F is preferably made up of the material that being unlikely extruded under the body weight effect at human body.Some examples of these materials comprise wood materials, high density cloth (for example, being not easy the canvas of contraction), thermoplastic elastomer (TPE) (TPE), rubber, plastic material (for example, EVA resin) etc.

In the time that thermoplastic elastomer (TPE), rubber or plastic material are used as to this material, the hardness of this material is preferably in 5 to 120 scope, more preferably in 40 to 90 scope.By hardness being set in above-mentioned preferred scope, particularly in above-mentioned preferred scope, suitably guarantee the comfort level of seated person, prevent owing to using for a long time seat board 3F to make seat board 3F (particularly at end face 221F place and be positioned at the forward and backward side's of end face 221F part place) produce less desirable distortion simultaneously.

Soft material seat board 232F is preferably made up of material softer than hard material seat board 230F and that have a damping characteristics.Some examples of these materials comprise that for example fabric, high density cloth, expanded material are (for example, sponge), rubber, thermoplastic elastomer (TPE) (TPE), plastic material (for example, EVA resin), wherein all these materials all have damping characteristics.

In the time using seat tool 1F, a pair of

ischium

911 and 911 that end face 221F suppresses seated person moves forward.Now, the thigh top of seated person and ischium are supported on by hard material seat board 230F the part place that is positioned at the forward and backward side of end face 221F respectively.As a result, 3 stationary states of pelvis 91 have been realized.In addition, because the thigh top of seated person and ischium support by hard material seat board 230F, so the maintenance before and after the body weight of seated person applies of the shoulder height of end face 221F is constant.

Then, in addition, the buttocks of seated person is supported by soft material seat board 232F.As a result, the comfort level of the buttocks of seated person improves.

The length L of the fore-and-aft direction of hard material seat board 230F ₈(from end face, 221F extends back) is preferably enough greatly to support a pair of ischium 991 and 991.Particularly, length L ₈preferably in 10mm arrives the scope of 100mm, more preferably in 30mm arrives the scope of 50mm.

The length L of the fore-and-aft direction of the first seat surface 21F ₄preferred value and the length L of the fore-and-aft direction of the interarea 10F of the second seat surface 22F ₃respectively with the length L of fore-and-aft direction of the first seat surface 21 of the seat tool 1 described in embodiment 1 ₁length L with the fore-and-aft direction of the interarea 10 of the second seat surface 22 ₂roughly the same.

According to embodiment 7, except the beneficial effect that embodiment 1 provides, it is constant that the shoulder height of end face 221F keeps before and after the body weight of seated person applies, and the comfort level of the buttocks of seated person improves simultaneously.

In addition, be similar to the seat tool 1D (Fig. 6) according to embodiment 5, the end face 221F being arranged in the first seat surface 21F mono-side of the second seat surface 22F can be configured to towards front projection.

In addition can arrange in the hinder marginal part 211F of present tool 1F according to the backboard 31 of the seat tool 1A of embodiment 2.

[embodiment 8]

Then,, with reference to Fig. 9, provide according to the description of the embodiment 8 of seat tool of the present invention.Fig. 9 is the stereogram illustrating according to the embodiment 8 of seat tool of the present invention.In the description of the present embodiment, some structures that the structure of omission and above-described embodiment and beneficial effect are overlapping and the description of beneficial effect, and difference has mainly been described.

Be similar to the seat tool 1D according to embodiment 5, formed by single seat board 3K according to the seat tool 1K of the present embodiment.Seat board 3K comprises towards the first seat surface 21K of the curved projection of the second seat surface 22K.In conjunction with said structure, in top view, the second seat surface 22K be arranged in end face 221K in the first seat surface 21K mono-side as stage portion bending with towards front projection.Because there is above-mentioned step, so can fix a pair of

ischium

911 and 911 according to the seat tool 1K of the present embodiment, make

ischium

911 and 911 hold and also can absorb the trickle individual difference of the ischium position of seated person for step, and more effectively improve the position of taking one's seat of seated person.In addition, because step in top view also coincide with the contour shape of ischium, so seated person is sat more comfortablely.In top view, an example of the preferred radius value of end face 221K in the edge part of end face 221K front side arrives in the scope of 330mm 290.

Seat tool 1K be also according to the difference of the seat tool 1D of embodiment 5: a seat tool 1K has oval-shaped floor projection, wherein long axis left and right directions, and the length of the fore-and-aft direction of the first seat surface 21K and the second seat surface 22K increases with the more close center line of length (chain-dotted line shown in Fig. 9).

The interarea 10K (the second seat surface 22K except the end face 221K being arranged in the first seat surface 21K mono-side) of the second seat surface 22K supports a pair of thigh top of seated person in the left and right side region 301 and 301 except the zone line 300 of left and right directions.In the time that the length of the fore-and-aft direction in the left and right side region 301 and 301 of interarea 10K is larger, therefore the thigh top of seated person can press to interarea 10K in large area.As a result, reduced the comfort level of seated person.Therefore, the length of the fore-and-aft direction in the left and right side region 301 and 301 of interarea 10K is preferably less.From the point of view, the maximum length L of the fore-and-aft direction in the left and right side region 301 and 301 of the interarea 10K of the second seat surface 22K ₁₀be configured to the maximum length L of the fore-and-aft direction that is less than the first seat surface 21K ₁₁.Because there is said structure, thus prevent that the thigh top of seated person from pressing to the second seat surface 22K in large area, and seated person comfortable taking one's seat for a long time.In addition, seat tool 1K is configured to quite compact.

In the present embodiment, the zone line 300 of the left and right directions of the interarea 10K of the second seat surface 22K refers to lower area: roughly between a pair of thigh top of seated person, and around the center line of the left and right directions of interarea 10K, have the length W of the left and right directions of interarea 10K ₅1/4th width.The zone line 300 of interarea 10K does not bear the too much body weight of transmitting from the thigh top of seated person, and therefore, zone line 300 has larger length on fore-and-aft direction without doubt.But, from compact viewpoint, more preferably the length of the fore-and-aft direction of interarea 10K across the whole region of the left and right directions of interarea 10K, be less than the maximum length L of the fore-and-aft direction of the first seat surface 21K ₁₁.

The first seat surface 21K has prevent that a tool 1K is because of the function being squeezed and moving forward from the body weight effect of buttocks transmission.Therefore, the length L of the fore-and-aft direction of the first seat surface 21K ₁₁should be enough greatly to accept from the body weight of buttocks transmission.But, on the other hand, as the maximum length L of the fore-and-aft direction of the first seat surface 21K ₁₁when too large, can not realize 3 stationary states of pelvis 91.From the point of view, the length L of the fore-and-aft direction of the first seat surface 21K ₁₁preferably in 70mm arrives the scope of 250mm.More specifically, for example, for adapting to have the masculinity and femininity adult of standard figure, the maximum length L of the fore-and-aft direction of the first seat surface 21K ₁₁preferably in 100mm arrives the scope of 200mm, more preferably in 150mm arrives the scope of 170mm.For example,, in order to adapt to primary school's age or young children, maximum length L ₁₁preferably in 70mm arrives the scope of 150mm.Bend to rearwardly projecting old man's etc. the posture of taking one's seat in order to improve as much as possible backbone 92, maximum length L ₁₁also preferably in 200mm arrives the scope of 250mm.

The second seat surface 22K has following functions: by the thigh top of seated person is supported in the left and right side region 301 of its interarea 10K, and the step forming by means of the end face 221 being arranged in the first seat surface 21K mono-side by setting regulates the displacement forward of a pair of ischium 911 and 911.In this connection, the maximum length L of the fore-and-aft direction of the interarea 10K of the second seat surface 22K in left and right side region 301 ₁₀do not bring into play the effect that realizes 3 stationary states.As maximum length L ₁₀when larger, therefore the thigh top of seated person can push the second seat surface 22K in large area, and result, reduced the comfort level of seated person.In addition,, from compact viewpoint, said structure is less desirable.Therefore, maximum length L ₁₀preferably less.Particularly, maximum length L ₁₀preferably be less than or equal to 150mm, be more preferably less than or equal 90mm, and be even more preferably less than or equal 40mm.On the other hand, as maximum length L ₁₀too hour, in the case of using the material that hardness is relatively little, the second seat surface 22K is easily deforming from the body weight effect of seated person transmission, and in the case of using the relatively large material of hardness, a part of the second seat surface 22K is pressed into the thigh top of seated person, and the comfort level of seated person reduces.From the point of view, length L ₁₀preferably greater than or equal to 3mm.

The length W of the left and right directions that is arranged in the end face 221K in the first seat surface 21K mono-side of the second seat surface 22K ₅must be greater than the distance between a pair of ischium 911 and 911.On the other hand, from making a viewpoint for tool 1K compactness, length W ₅preferably in 100mm arrives the scope of 500mm, more preferably in 150mm arrives the scope of 400mm, and even more preferably in 250mm arrives the scope of 300mm.

The first seat surface 21K extends and not hindered by step across the whole length of seat board 3K along the left and right directions of seat tool 1K.In other words, the pelvis 91 that anything suppresses seated person is not set on the left and right side of the first seat surface 21K.Therefore, step can not cause compressing to the left and right side of the buttocks of seated person, and the first seat surface 21K supports the buttocks of seated person.As a result, comfortable the taking one's seat of seated person and can not feel constriction on buttocks.In addition, according to above-mentioned the first seat surface 21K, even if the buttocks of seated person is suspended in outside the left and right side of the first seat surface 21K, as long as the length of the left and right directions of step is greater than or equal to the distance between a pair of

ischium

911 and 911,3 stationary states also will be realized without doubt.Therefore, the length of the left and right directions of step can be reduced to the distance being for example roughly between a pair of ischium, and can seat tool 1K be constructed compactlyer.

The end face 221K in the first seat surface 21K mono-side of being arranged in of the second seat surface 22K forms step with respect to the first seat surface 21K, and a pair of

ischium

911 and 911 that is therefore used for suppressing seated person moves forward.From the point of view, be similar to according to the shoulder height H of the end face 221 of the seat tool 1 of embodiment 1 ₁, the shoulder height H of end face 221K ₁₁preferably in 3mm arrives the scope of 30mm, more preferably in 3mm arrives the scope of 20mm, and even more preferably in 8mm arrives the scope of 15mm.

For the viewpoint beyond above-mentioned viewpoint, the size of seat tool 1K and materials similar are according to those sizes and the material of the seat tool 1 of embodiment 1, and the descriptions thereof are omitted.Angle value between end face 221K and the first seat surface 21K is defined as through measured value (chain-dotted line shown in Fig. 9) on the vertical section of the present tool 1K of the center line of the left and right directions of seat board 3K, and angle θ described in its preferred value and embodiment 1 ₁identical.

According to embodiment 8, except the beneficial effect that embodiment 5 provides, prevent that the thigh top of seated person from pushing the second seat surface 22K in large area, and seated person comfortable taking one's seat for a long time.In addition, seat tool 1K is configured to quite compact.

In addition, be similar to the seat tool 1A according to embodiment 2, backboard also can arrange in the hinder marginal part 211K of present tool 1K.

[embodiment 9]

Then,, with reference to Figure 10, provide according to the description of the embodiment 9 of seat tool of the present invention.Figure 10 is the stereogram illustrating according to the embodiment 9 of seat tool of the present invention.In the description of the present embodiment, some structures that the structure of omission and above-described embodiment and beneficial effect are overlapping and the description of embodiment, and difference has mainly been described.

Comprise seat board 3M and supporter 157 according to the seat tool 1M of the present embodiment, this supporter is placed on horizontal plane 9 (for example, the seat surface of chair) above and supports seat board 3M.

Seat board 3M has the structure roughly the same with the structure of seat board 3K, and this seat board 3K forms the seat tool 1K according to the embodiment 8 shown in Fig. 9.Shape, size and the materials similar of seat board 3M is in those shapes, size and the material of seat board 3K, and the descriptions thereof are omitted.

Supporter 157 is placed on horizontal plane 9.Supporter 157 comprises base plate 157A and backboard 157B, and wherein seat board 3M is placed on this base plate, and this backboard upwards and generally perpendicularly extends the end the first seat surface 21M mono-side that is arranged in seat board 3M of base plate 157A with respect to base plate 157A.Base plate 157A and backboard 157B form.Extend the end that backboard 157B also can be configured to the first seat surface 21M mono-side that is arranged in seat board 3M of base plate 157A, and be configured to only partly upwards and generally perpendicularly extend with respect to base plate 157A.

In the time being included in base plate 157A in supporter 157 and being placed on horizontal plane 9, this base plate has seat board 3M is supported to function in the above.Seat board 3M is by using binding agent or fastener etc. to be fixed on the base plate 157A being included in supporter 157.As shown in figure 10, in the time that base plate 157A has the floor projection shape roughly the same with the floor projection shape of seat board 3M, a seat tool 1M constructs compactlyer.

Be included in the function that backboard 157B in supporter 157 has the displacement backward of adjusting the rumpbone 912 that is sitting in the people on seat board 3M.Therefore, the step that the end face 221M in the first seat surface 21M mono-side forms of being arranged in by means of the second seat surface 22M has suppressed a pair of

ischium

911 and 911 and has moved forward, and the backboard 157B of supporter 157 has suppressed moving backward of rumpbone 912, and result, 3 stationary states are achieved.From the point of view, the angle between base plate 157A and backboard 157B (, seat board 157A above and backboard 157B above between angle θ ₇) be preferably roughly right angle.Particularly, angle θ ₇preferably in the scope of 90 ° to 120 °, more preferably in the scope of 90 ° to 95 °.In the time that seat board 3M is placed on supporter 157, backboard 157B is with respect to the height H of the first seat surface 21M ₁₂preferably in 50mm arrives the scope of 350mm, more preferably in 100mm arrives the scope of 210mm.

Preferably supporter 157 is by base plate 157A being unlikely squeezed under user's body weight effect and the unlikely sweptback material of backboard 157B being made.Some examples of these materials comprise wood materials, plastic material (for example, fibre reinforced plastics (FRP)) etc.By constructing above-mentioned supporter 157, even when 3 stationary states cannot be when being placed on seat board 3M on the seat surface of chair that (not shown) is realized, for example, when the seat board of chair is made up of soft material or in the time that the backboard of chair seriously recedes, 3 stationary states also can be by being placed on supporter 157 on the seat surface of chair and seat board 3M being placed on supporter 157 and being realized.

For example, using between the operating period of seat tool 1M of chair, seated person for example, is placed into seat tool 1M on horizontal plane 9 making to be included in backboard 157B in supporter 157 under the state of wall 8 (, the backboard of chair before) (not shown).Now, preferably the exterior region 222M of seat board 3M aligns with the exterior region of the horizontal plane 9 relative with wall 8.Because there is said structure, thus be sitting in a tool 1M when upper when human body, the knee that has prevented each thigh below part be placed on horizontal plane 9.As a result, the comfort level of seated person is improved further.

In order to allow 3 stationary states, be included in the bottom of the backboard 157B in supporter 157 and the ultimate range L that is arranged in fore-and-aft direction between the end face 221M in the first seat surface 21M mono-side, seat tool 1M of the second seat surface 22M ₁₂preferably in 70mm arrives the scope of 250mm.More specifically, for example, in order to adapt to have the masculinity and femininity adult of standard figure, length L ₁₂preferably in 100mm arrives the scope of 200mm, more preferably in 150mm arrives the scope of 170mm.For example,, in order to adapt to the children at primary school's age or less age, length L ₁₂preferably in 70mm arrives the scope of 150mm.Bend to rearwardly projecting old man's etc. the posture of taking one's seat in order to improve as much as possible backbone 92, length L ₁₂also preferably in 200mm arrives the scope of 250mm.

According to embodiment 9, even when 3 stationary states cannot for example, by (being placed on horizontal plane by seat board 3M, the seat surface of chair) upper (not shown) is while realizing, for example, when the seat board of chair is made up of soft material or in the time that the backboard of chair seriously recedes, also can be simply by being placed on, seat tool 1M in plane, realizes 3 stationary states.

In addition,, also according to embodiment 9, seat tool 1M also constructs than chair compactness.Therefore, seat tool 1M is easy to deposit and carry.

Seat board 3M and supporter 157 needn't be fixed and can form separately.In this case, in the time taking one's seat, user can according to user's pelvic dimensions adjustment kit be contained in the bottom of backboard 157B of supporter 157 and the second seat surface 22M be arranged between the end face 221M in the first seat surface 21M mono-side, the ultimate range L of the fore-and-aft direction of seat tool 1M ₁₂.As a result, the trickle individual difference of the size of the pelvis 91 of seated person is resolved.Seat board 3M also can arrange shoe (not shown) on its reverse side.For example, shoe is by making reverse side form male and fomale(M&F) or by Anti-skid sheet is bonded to reverse side setting.Also can setting position adjusting device (not shown) replace shoe is set, this apparatus for adjusting position regulates the position of seat board 3M with respect to the fore-and-aft direction of supporter 157.For example, carry out in the following manner setting position adjusting device: the gap of extending along fore-and-aft direction be formed on the base plate 157A being included in supporter 157 in the middle part of the fore-and-aft direction of supporter 157 in, and 3M arranges projection for seat board, this projection can be placed on along the gap of fore-and-aft direction this projection from the bottom surface of seat board 3M to downward-extension.Because this apparatus for adjusting position, so can adjustable range L ₁₂, prevented that seat board 3M from producing less desirable distortion with respect to supporter 157 on left and right directions simultaneously.

Shoe (not shown) also can be arranged on the reverse side of the base plate 157A being included in supporter 157.For example, shoe can, for example, by making reverse side form male and fomale(M&F), by Anti-skid sheet is bonded to reverse side, or by binding agent is applied to reverse side setting.

In addition, form according to the seat board 3 (Fig. 1 and 2) of the seat tool 1 of embodiment 1, form according to the seat board 3B (Fig. 4) of the seat tool 1B of embodiment 3, form according to the seat board 3C (Fig. 5) of the seat tool 1C of embodiment 4, form according to the seat board 3D (Fig. 6) of the seat tool 1D of embodiment 5, form according to the seat board 3E (Fig. 7) of the seat tool 1E of embodiment 6, form according to any one in the seat board 3F (Fig. 8) of the seat tool 1F of embodiment 7 and can replace the seat board 3M being included in according in the seat tool 1M of the present embodiment to use.

[embodiment 10]

Then,, with reference to Figure 11, provide according to the description of the embodiment 10 of seat tool of the present invention.Figure 11 is the stereogram illustrating according to the embodiment 10 of seat tool of the present invention and the pattern of use thereof.In the description of the present embodiment, some structures and embodiment that the structure of omission and above-described embodiment and beneficial effect are overlapping, and difference has mainly been described.

Comprise according to the seat tool 1J of the present embodiment: seat board 3J; Supporter 152, it is placed on the seat surface of chair 156 and supports seat board 3J; With a pair of

liner

153 and 154, its be included in backboard 152B in supporter 152 above on setting up and down.

Seat board 3J has the structure roughly the same with the structure of seat board 3K, and seat board 3K has formed the seat tool 1K according to the embodiment 8 shown in Fig. 9.Shape, size and the materials similar of seat board 3J is in those shapes, size and the material of seat board 3K, and the descriptions thereof are omitted.

Supporter 152 is placed on the seat surface of chair 156.Supporter 152 comprises base plate 152A and backboard 152B, and wherein seat board 3J is placed on this base plate, and this backboard upwards and generally perpendicularly extends the end the first seat surface 21J mono-side that is arranged in seat board 3J of base plate 152A with respect to base plate 152A.Base plate 152B and backboard 152B can form.Extend the end that backboard 152B also can be configured to the first seat surface 21J mono-side that is arranged in seat board 3J of base plate 152A, and be configured to only partly upwards and generally perpendicularly extend with respect to base plate 152A.

When on the seat surface that is included in base plate 152A in supporter 152 and is placed on chair 156, this base plate has seat board 3J is supported to function in the above.From the point of view, preferably base plate 152A there is the region that is greater than or is substantially equal to seat board 3J above.

The backboard 152B being included in supporter 152 has the function that regulates the displacement forward of the rumpbone 912 that is sitting in the people on seat board 3J by lower pad 153.Therefore, the step that the end face 221J in the first seat surface 21J mono-side forms of being arranged in by means of the second seat surface 22J has suppressed a pair of

ischium

911 and 911 and has moved forward, and the backboard 152B of supporter 152 has suppressed moving backward of rumpbone 912 by lower pad 153, and result, 3 stationary states are achieved.From the point of view, the angle between base plate 152A and backboard 152B (, base plate 152A above and backboard 152B above between angle θ ₅) be preferably roughly right angle, more preferably in the scope of 90 ° to 120 °, and even more preferably in the scope of 90 ° to 95 °.In the time placing seat board 3J, backboard 152B with respect to the height of the first seat surface 21J preferably at 50mm in the scope of 350mm, more preferably at 100mm in the scope of 210mm.

Preferably supporter 152 is made up of the material that base plate 152A is unlikely squeezed under user's body weight effect and backboard 152B is unlikely fallen backward.Some examples of these materials comprise wood materials or plastic material (for example, fibre reinforced plastics (FRP)) etc.By constructing above-mentioned supporter 152, even if 3 stationary states cannot be by being placed on seat board 3J while realizing on the seat surface of chair 156, for example,, when the seat board 156A of chair 156 is made up of soft material or when the backboard 156B of chair 156 seriously recedes, also can realize 3 stationary states.

Seat board 3J for example, by using fixing means 155 (, binding agent) to be secured on the base plate 152A being included in supporter 152.

A pair of

liner

153 and 154 be included in supporter 152 backboard 152B before the face of human body (, towards) upper setting up and down.The back side of

liner

153 and 154 is secured on the backboard 152B being included in supporter 152 by use binding agent etc.Before the backboard 152B that being parallel to above of

preferred pad

153 and 154 is included in supporter 152.

Lower pad 153 has the position of the rumpbone 912 by fix seated person in abutting connection with rumpbone 912 and cushions the function of the impact producing when rumpbone 912 pushes backboard 152B.From the point of view, lower pad 153 be arranged to altitude range apart from the first seat surface 21J of the seat board 3J that places at 50mm in the scope of 350mm, preferably in 100mm arrives the scope of 210mm, to allow lower pad 153 in abutting connection with the rumpbone 912 that is sitting in the people on seat board 3J.

Upper liner 154 has the natural S-shape curve that impels seated person to keep backbone 92 and cushions the function of the impact producing when backbone 92 pushes backboard 152B.

Seat board 3J is formed the ellipse that its floor projection is the left and right directions of major axis.But the floor projection shape of seat board 3J is not limited to ellipse, and can be any shape, combination of some of such as rectangle, circle, trapezoidal and fan-shaped or these shapes etc.

Between the operating period of present tool 1J, seated person is placed on seat tool 1J on the seat surface of chair 156 under the state of the backboard 156B of chair 156 at the backboard 152B that makes to be included in supporter 152.Now, the ultimate range that is arranged in fore-and-aft direction between the end face 221J in the first seat surface 21J mono-side, seat tool 1J of lower pad 153 and the second seat surface 22J is preferably in 70mm arrives the scope of 250mm.More specifically, for example, in order to adapt to have the masculinity and femininity adult of standard figure, above-mentioned distance is preferably in 100mm arrives the scope of 200mm, more preferably in 150mm arrives the scope of 170mm.For example, in order to adapt to the children at primary school's age or less age, above-mentioned distance is preferably in 70mm arrives the scope of 150mm.Bend to rearwardly projecting old man's etc. the posture of taking one's seat in order to improve as much as possible backbone 92, above-mentioned distance more preferably at 200mm in the scope of 250mm.

According to embodiment 10, except the beneficial effect that embodiment 9 provides, lower pad 153 is also fixed the position of rumpbones 912 in abutting connection with the rumpbone 912 of seated person, and has cushioned the impact producing when rumpbone 912 pushes backboard 152B.In addition, upper liner 154 is impelled seated person to keep the natural S-shape curve of backbone 92 and is cushioned the impact producing when backbone 92 pushes backboard 152B.

In the present embodiment, the one in lower pad 153 and upper liner 154 also can be set.In the time separately lower pad 153 being set, can greatly reducing the height of the backboard 152B being included in supporter 152, thereby produce compacter seat tool 1J.

Supporter 152 and seat board 3J needn't fix and can form separately.In this case, in the time taking one's seat, user can be according to the distance between the end face 221J in the first seat surface 21J mono-side that is arranged in seat board 3J of user's pelvic dimensions adjusting lower pad 153 and the second seat surface 22J.As a result, the trickle individual difference of the size of the pelvis 91 of seated person is resolved.Seat board 3J also can arrange shoe (not shown) on its reverse side.For example, shoe is by making reverse side form male and fomale(M&F) or by Anti-skid sheet is bonded to reverse side setting.Also can setting position adjusting device (not shown) replace shoe is set, this apparatus for adjusting position regulates the position of seat board 3J with respect to the fore-and-aft direction of supporter 152.For example, carry out in the following manner setting position adjusting device: the gap of extending along fore-and-aft direction be formed on the base plate 152A being included in supporter 152 in the middle part of the fore-and-aft direction of supporter 152 in, and 3J arranges projection for seat board, this projection can be placed on along the gap of fore-and-aft direction this projection from the bottom surface of seat board 3J to downward-extension.Because this apparatus for adjusting position, thus can adjustable range lower pad 153 and the end face 221J of seat board 3J between distance, prevented that seat board 3J from producing less desirable distortion with respect to supporter 152 on left and right directions simultaneously.

Shoe (not shown) also can be arranged on the reverse side of the base plate 152A being included in supporter 152.For example, shoe forms male and fomale(M&F) by the reverse side that makes base plate 152A, by Anti-skid sheet being bonded to the reverse side of base plate 152A, or arranges by the reverse side that binding agent is applied to base plate 152A.

In addition, form according to the seat board 3 (Fig. 1 and 2) of the seat tool 1 of embodiment 1, form according to the seat board 3B (Fig. 4) of the seat tool 1B of embodiment 3, form according to the seat board 3C (Fig. 5) of the seat tool 1C of embodiment 4, form according to the seat board 3D (Fig. 6) of the seat tool 1D of embodiment 5, form according to the seat board 3E (Fig. 7) of the seat tool 1E of embodiment 6, form according to any one in the seat board 3F (Fig. 8) of the seat tool 1F of embodiment 7 and can replace the seat board 3J being included in according in the seat tool 1J of the present embodiment to use.

[embodiment 11]

Then,, with reference to Figure 12 (a) and 12 (b), provide according to the description of the embodiment 11 of seat tool of the present invention.Figure 12 (a) is the stereogram illustrating according to the embodiment 11 of seat tool of the present invention.Figure 12 (b) is the sectional view along the seat tool of the line C-C in Figure 12 (a).In the description of the present embodiment, some structures and embodiment that the structure of omission and above-described embodiment and beneficial effect are overlapping, and difference is mainly described.

Comprise seat board 3N and supporter 158 according to the seat tool 1N of the present embodiment, this supporter is placed on horizontal plane (for example, the seat surface of chair) above and supports seat board 3M.

Seat board 3N is that with the difference forming according to the seat board 3K of the seat tool 1K of the embodiment 8 shown in Fig. 9 the part of seat board 3N on the first seat surface 21N is formed as corrugated.Particularly, above the part of the first seat surface 21N in seat board 3N, (the first seat surface 21N) and reverse side have bellows-shaped, and wherein, the bending spine of extending along fore-and-aft direction and curved recessed portion be alternately coupling on left and right directions.In seat board 3N, a part of a part of the first seat surface 21N and the second seat surface 22N forms.

Seat board 3N is preferably made up of the material that being unlikely extruded under the body weight effect at human body.Some examples of these materials comprise wood materials, high density cloth (for example, being not easy the canvas of contraction), thermoplastic elastomer (TPE) (TPE), rubber, plastic material (for example, EVA resin) etc.

In the time that thermoplastic elastomer (TPE), rubber or plastic material are used as to this material, the hardness of material is preferably in 5 to 120 scope, more preferably in 40 to 90 scope.By hardness being set in above-mentioned preferable range, especially above-mentioned more preferably in above-mentioned preferred scope, can suitably guarantee the comfort level of seated person, prevent owing to using for a long time seat board 3N to make seat board 3N produce less desirable distortion simultaneously.

The material that is formed as corrugated and seat board 3N when the part of seat board 3N on the first seat surface 21N be there is above-mentioned hardness thermoplastic elastomer (TPE), rubber or plastic material (for example, EVA resin) etc. time, user can be under user's body weight effect in the time taking one's seat crush ribs 140N a little downwards, wherein this spine is arranged on above the part of seat board 3N on the first seat surface 21N.Then, the high rigidity of seat board 3N prevents from occurring excessive distortion in stage portion, and because the part of seat board 3N on the first seat surface 21N slightly pushed, so this part is as liner.Therefore, the comfort level of taking one's seat of seated person improves.

Be arranged in the maximum length L of the fore-and-aft direction of interarea 10N left and

right side region

305 and 305, the second seat surface 22N (the second seat surface 22N except the end face 221N being arranged in the first seat surface 21N mono-side) except zone line 304 ₁₃, the first seat surface 21N the maximum length L of fore-and-aft direction ₁₄, the second seat surface 22N the length W of left and right directions of end face 221N ₆, and the height H of the step that forms by means of end face 221N ₁₂preferred value respectively with the length L of the seat 3K shown in Fig. 9 ₁₀, length L ₁₁, length W ₅, and height H ₁₁preferred value roughly the same.The height H of the step forming by means of end face 221N ₁₂on referring on the first seat surface 21N, start the height of the end face 221N measuring from the upper end of the 140N of spine.

About with the similar part of the seat board 3K shown in Fig. 9, on the left and right directions of the present tool 1N of the first seat surface 21N, extend and not hindered by the step forming by means of end face 221N across the whole length of seat board 3N, and end face 221N bends to towards front projection in top view, the descriptions thereof are omitted.

Be placed on supporter 158 on horizontal plane and comprise seat board 3N be placed on it base plate 158A, the first 158C of backboard portion and second 158B of backboard portion of face.The first 158C of backboard portion and base plate 158A form and upwards extend from the rearward end of base plate 158A.The second 158B of backboard portion and base plate 158A and the first 158C of backboard portion form separately, and by optional fixing means be fixed to the first 158C of backboard portion before.Therefore, the first 158C of backboard portion and the second 158B of backboard portion have roughly formed the backboard that comprises the supporter 158 in present tool 1N.Extend the end of the backboard of seat tool 1N the first seat surface 21N mono-side that is arranged in seat board 3N of base plate 158A, and in the second 158B of backboard portion, upwards and generally perpendicularly extend with respect to base plate 158A.But base plate 158A, the first 158C of backboard portion and the second 158B of backboard portion also can form.

Supporter 158 is mainly being provided with along multiple grooves 159 of fore-and-aft direction extension of base plate 158A above with the difference of the supporter 157 shown in Figure 10.From Figure 12 (b), can be clear that, the size of groove 159 is meshed with the 141N of spine being arranged on the reverse side of seat board 3N, and seat board 3N can be slided along fore-and-aft direction on the base plate 157A being included in supporter 157.Because there is said structure, so user can regulate the position of the fore-and-aft direction of seat board 3N with respect to the second 158B of backboard portion being included in supporter 158, and can prevent that seat board 3N from producing the movement of less desirable left and right directions with respect to supporter 158.

As shown in Figure 12 (a) and 12 (b), in the time being arranged on the length of fore-and-aft direction of the groove 159 in supporter 158 and being greater than the length of fore-and-aft direction of seat board 3N, be arranged on when the 141N of spine on the reverse side of seat board 3N slides in groove 159 and can be more stably guided by groove.

Be included in angle between base plate 158A and the second 158B of backboard portion in supporter 158 (part that, the approximate horizontal of base plate 158A is extended above and backboard 158B above between angle θ ₈) preferred value and Figure 10 in the angle θ that forms ₇roughly the same.

According to embodiment 11, except the beneficial effect that embodiment 9 provides, seat board 3N can slide along fore-and-aft direction in engaging with supporter 158 on supporter 158.As a result, user can regulate the position of the fore-and-aft direction of seat board 3N with respect to the second 158B of backboard portion being included in supporter 158, and can prevent that seat board 3N from producing the movement of less desirable left and right directions with respect to supporter 158.

Shoe (not shown) also can be arranged on the reverse side of the base plate 158A being included in supporter 158.For example, shoe forms male and fomale(M&F) by the reverse side that makes base plate 158A, by Anti-skid sheet being bonded to the reverse side of base plate 158A, or arranges by the reverse side that binding agent is applied to base plate 158A.

Although seat board 3N and supporter 158, in conjunction with the 1N that formed a tool, can omit supporter 158, and a tool can be formed separately by seat board 3N in the present embodiment.

Any one according to the seat of embodiment 1-11 in tool can comprise the cover (not shown) that covers whole seat tool.For example, this cover can be by being configured to the sheet material that elastic fabric etc. is made.

< chair >

Then,, with reference to Figure 13-16, provide according to the description of the embodiment 1-3 of chair of the present invention.Note, following embodiment is only example, and the present invention is not limited to this.

Chair according to the present invention consists essentially of and is included in the seat surface roughly the same according to the seat surface in above-mentioned seat tool of the present invention.Therefore, be included according to the seat surface in the seat tool of above-described embodiment and can be applied to according in chair of the present invention.

[embodiment 1]

Below, with reference to Figure 13 and 14, provide according to the description of the embodiment 1 of chair of the present invention.Figure 13 is the stereogram illustrating according to the embodiment 1 of chair of the present invention.Figure 14 is along the line B-B in Figure 13, illustrates that human body is sitting in the sectional view of the state in the chair shown in Figure 13.Comprise and form the first seat board 108 of the first seat surface 21G, the second seat board 109, backboard 103, leg section 104 and the connecting plate 105 of formation the second seat surface 22G according to the chair 101 of the present embodiment.The first seat board 108 and the second seat board 109 form single seat board 110.Connecting plate 105 and the first seat board 108, the second seat board 109 and leg section 104 are connected to each other.A pair of leg section 104 and connecting plate 105 are arranged in each in the left and right side of chair 101, and each leg section 104 is distributed to the forward and backward side of chair 101.As a result, chair 101 is by four leg supported standings.

Backboard 103 and seat board 110 combine, make in the longitdinal cross-section diagram along fore-and-aft direction, backboard 103 be arranged in seat board 110 1 sides before (towards the face of human body) with respect to the first seat surface 21G upwards generally perpendicularly extend.Then, clamp and it is coupled mutually from left and right side clamping backboard 103 and seat board 110 left and right sides by connecting plate 105 and 105.At backboard 103, the first seat board 108, the second seat board 109 and connecting plate 105, after being coupled mutually, because connecting plate 105 and leg section 104 use bolts 106 etc. carry out fastening result, they are also connected with leg section 104.Can also only partly upwards and generally perpendicularly extending with respect to the first seat surface 21G above of backboard 103.

The second seat surface 22G extends to the front of chair 101 continuously from the first seat surface 21G.The second seat surface 22G forms the step higher than the first seat surface 21G by means of the end face 221G being arranged in the first seat surface 21G mono-side of the second seat surface 22G.Similar being included according to the seat surface in the seat tool 1D of the embodiment 5 shown in Fig. 6, seat surface 2G comprises the first seat surface 21G being convexly curved towards the second seat surface 22G.In conjunction with said structure, be arranged in end face 221G in the first seat surface 21G mono-side bending or the flexing in top view of the second seat surface 22G become the front projection towards chair 101.The difference of seat surface 2G and seat surface 2D is: the length of the left and right directions of the second seat surface 22G is configured near the center line (chain-dotted line shown in Figure 13) at left and right directions maximum.The first seat board 108 and the second seat board 109 for example, tighten together by fastener 107 (, a pair of left and right bolt), and wherein, the second seat board 109 is arranged in the surperficial front portion of the first seat board 108 superimposedly.

The first seat surface 21G is by not overlapping with the second seat board 109 surperficial formation of part of the first seat board 108.Above second seat surface 22G the second seat board 109.The second seat surface 22G has the rear end face (that is, being arranged in the end face 221G in the first seat surface 21 1 sides) of inclination, and the second seat surface 22G is at adjacency the first seat surface 21G of end face 221G place.

In the time that human body is sitting on chair 101, it is upper that buttocks is placed on the first seat surface 21G by seated person, and it is upper that thigh top is placed on to the second seat surface 22G, make the buttocks of the first seat surface 21G support seated person, and the second seat surface 22G supports the thigh top of seated person.Now, a pair of

ischium

911 and 911 of seated person is near end face 221G, and the step forming by means of end face 221G has suppressed

ischium

911 and 911 and moves forward.The rumpbone 912 of seated person is also near before backboard 103, and backboard 103 suppressed moving backward of rumpbone 912 above.As a result, 3 stationary states have been realized.

The first seat surface 21G extends and not hindered by step across the whole length of seat board 110 along the left and right directions of chair 101.Therefore, step can not cause compressing to the left and right side of the buttocks of seated person, and the first seat surface 21G supports the buttocks of seated person.As a result, seated person can comfortable being taken one's seat and can on buttocks, do not experienced constriction.

Be arranged in end face 221G in the first seat surface 21G mono-side bending or the flexing in top view of the second seat surface 22G become towards front projection.Because there is the step forming by means of above-mentioned end face 221G, so can fix a pair of

ischium

911 and 911 according to the chair 101 of the present embodiment,

ischium

911 and 911 is held by step, and can absorb the trickle individual difference of ischium position of seated person and the position of taking one's seat of more effectively improving seated person.In addition, because step also coincide with the contour shape of ischium in top view, so seated person is sat more comfortablely.In top view, an example of the preferred curvature radius value in the edge part of end face 221G front side of end face 221G arrives in the scope of 330mm 290.

The interarea 10G (the second seat surface 22G except the end face 221G being arranged in the first seat surface 21G mono-side) of the second seat surface 22G supports a pair of thigh top of seated person in the left and

right side region

303 and 303 except the zone line 302 of left and right directions.In the time that the length of the fore-and-aft direction of interarea 10G in left and

right side region

303 and 303 is larger, therefore the thigh top of seated person push interarea 10G in large area.As a result, reduced the comfort level of seated person.Therefore, the length of the fore-and-aft direction of interarea 10G in left and

right side region

303 and 303 is preferably less.From the point of view, the maximum length L of the fore-and-aft direction of the interarea 10G of the second seat surface 22G in left and right side region 303 ₇be configured to the maximum length L of the fore-and-aft direction that is less than the first seat surface 21G ₆.Because there is said structure, prevent that the thigh top of seated person from pushing the second seat surface 22G in large area, and seated person comfortable taking one's seat for a long time.In addition, chair 101 is constructed quite compactly.

In the present embodiment, the zone line 302 of the left and right directions of the interarea 10G of the second seat surface 22G refers to lower area: roughly between a pair of thigh top of seated person, and around the center line of the left and right directions of interarea 10G, have 1/4th width of the length of the left and right directions of interarea 10G.

Must by make the whole buttocks of seated person be contained in end face 221G and backboard 103 above between space in realize 3 stationary states.From the point of view, the first maximum length L of seat surface 21G on the fore-and-aft direction of chair 101 ₆preferably in 70mm arrives the scope of 250mm.More specifically, for example, in order to adapt to have the masculinity and femininity adult of standard figure, maximum length L ₆preferably in 100mm arrives the scope of 200mm, more preferably in 150mm arrives the scope of 170mm.For example,, in order to adapt to the children at primary school's age or less age, maximum length L ₆preferably in 70mm arrives the scope of 150mm.Bend to rearwardly projecting old man's etc. the posture of taking one's seat in order to improve as much as possible backbone 92, maximum length L ₆also preferably in 200mm arrives the scope of 250mm.

The second seat surface 22G has following functions: by support the thigh top of seated person in the left and right side region 303 of its interarea 10, and by forming the displacement forward that is arranged in step that the end face 221 in the first seat surface 21K mono-side forms and regulates a pair of ischium 911 and 911 by means of the second seat surface 22K.In this connection, the maximum length L of the fore-and-aft direction along chair 101 of the interarea 10G of the second seat surface 22K in left and right side region 303 ₇do not bring into play the effect that realizes 3 stationary states.In addition, as maximum length L ₇when larger, therefore the thigh top of seated person push the second seat surface 22G in large area, and result, reduced the comfort level of seated person.Therefore, maximum length L ₇preferably less.Particularly, maximum length L ₇preferably be less than or equal to 150mm.Maximum length L ₇be more preferably less than or equal 90mm, and be even more preferably less than or equal 40mm.On the other hand, as maximum length L ₇too hour, in the case of using the material that hardness is relatively little, the second seat surface 22G is easily deforming from the body weight effect of seated person transmission, and in the case of using the relatively large material of hardness, a part of the second seat surface 22G is pressed into the thigh top of seated person, and the degree of comfort decreased of seated person.From the point of view, length L ₇preferably greater than or equal to 3mm.

Backboard 103 is with respect to the height H of the first seat surface 21G ₆preferably in 50mm arrives the scope of 350mm, more preferably in 100mm arrives the scope of 210mm.The angle θ above and between the first seat surface 21G of backboard 103 ₇preferably be roughly right angle, 3 stationary states are achieved.Particularly, angle θ ₇preferably in the scope of 90 ° to 120 °, more preferably in the scope of 90 ° to 95 °.

According to the chair 101 of embodiment 1, for example, the maximum length of the fore-and-aft direction of seat surface 2G can be at 150mm in the scope of 170mm, the length from rumpbone 912 to thigh top while taking one's seat that this length is substantially equal to human body.As a result, compared with the conventional chair of the length when the length of the fore-and-aft direction of seat surface is substantially equal to human body and takes one's seat from rumpbone to lower leg and thigh, compacter and be easier to deposit according to the chair 101 of the present embodiment.

According in the chair of the present embodiment, the first seat board 108 and the second seat board 109 can form.

The fastener 107 with the adjusting device (not shown) that regulates the gap between backboard 103 and the second seat surface 22G also can be set.An example of above-mentioned situation is in the first seat board 108 and/or the second seat board 109, gap (through hole) to be set according to the desired size in the gap that will regulate fastener 107 can be moved up in front and back.

The tilting gearing that backboard 103, seat board 110 are tilted around the bolt 106 as rotating shaft with respect to leg section 104 together with connecting plate 105 also can be set.By tilting gearing is set, when the user of chair 101 experiences compressing on buttocks owing to keeping for a long time identical posture, he can alleviate the compressing on buttocks by temporary transient angled back panel 103, seat board 110 and connecting plate 105.

Although in the present embodiment, leg section 104 is arranged on the both sides of chair 101, and the middle part of tossing about (center of body weight) that leg section can also be arranged on seat surface around.In this case, known lowering or hoisting gear (for example, cylinder) also can be set in leg section.

Also chair 101 can be configured to folding, to make chair 101 be easier to deposit.

The zone line of interarea 10G does not bear many body weight of transmitting from the thigh top of seated person, and therefore, as shown in figure 13, in interarea, the length of the fore-and-aft direction of zone line 302 is longer than the length in the left and

right side region

303 and 303 in interarea 10G without doubt.But from compact viewpoint, the length of the fore-and-aft direction of preferred interarea 10G is less than the maximum length L across the fore-and-aft direction whole region, the first seat surface 21K of the left and right directions of interarea 10G ₇.

In addition, according to the seat tool 1 (Fig. 1 and 2) of embodiment 1, according to the seat tool 1B (Fig. 4) of embodiment 3, according to the seat tool 1C (Fig. 5) of embodiment 4, according to the seat tool 1E (Fig. 7) of embodiment 6, according to the seat tool 1F (Fig. 8) of embodiment 7, according to the seat tool 1K (Fig. 9) of embodiment 8 with comprise seat surface according to institute in any one of the seat tool 1N (Figure 12) of embodiment 11 and can replace the seat surface 2G use being included in according in the chair 101 of the present embodiment.

[embodiment 2]

Then,, with reference to Figure 15, provide according to the description of the embodiment 2 of chair of the present invention.Figure 15 is the stereogram illustrating according to the embodiment 2 of chair of the present invention.Comprise seat board 135 according to the chair 131 of the present embodiment, this seat board comprises seat surface 2H, backboard 133, leg section 134 and for backboard 133 being fixed to the fixture of seat board 135.

Seat surface 2H has and the structure identical according to the seat surface of the seat tool 1D of the embodiment 5 shown in Fig. 6.Particularly, seat surface 2H comprises the first seat surface 21H and the second seat surface 22H.Be arranged in end face 221H in the first seat surface 21H mono-side bending or the flexing in top view of the second seat surface 22H become towards front projection.The second seat surface 22H forms step by means of the end face 221H being arranged in the first seat surface 21H mono-side.

Fixture 138 comprises along the vertical direction extends and along the separated a pair of bar of left and right directions.Fixture 138 is attached to the rear end face of seat board 135.Backboard 133 be arranged in upwards and generally perpendicularly extending with respect to the first seat surface 21H above in seat board 135 1 sides.That is to say, in the vertical section along fore-and-aft direction, the angle θ above and between the first seat surface 21H of backboard 133 ₄preferably be roughly right angle, 3 stationary states are achieved.Particularly, angle θ ₄preferably in the scope of 90 ° to 120 °, more preferably in the scope of 90 ° to 95 °.

As shown, although backboard 133 is separated along the vertical direction with seat board 135, backboard 133 has and is included in the function identical according to the backboard 103 in the chair 101 of embodiment 1.That is to say, backboard 133 is set so that with respect to the position of the above-below direction of the first seat surface 21H backboard 133 can be near the rumpbone of seated person 912.From the point of view, the distance H of the above-below direction between the lower edge of backboard 133 and the first seat surface 21H ₇preferably in 10mm arrives the scope of 250mm, more preferably in 30mm arrives the scope of 70mm.

The length of the fore-and-aft direction of the interarea 10H of the second seat surface 22H is configured to be less than the maximum length across the fore-and-aft direction whole region, the first seat surface 21H of the left and right directions of interarea 10H.Because there is said structure, thus can prevent the thigh upper compressive second seat surface 22H of seated person, and seated person comfortable taking one's seat for a long time.In addition, chair 131 is configured to quite compact.

The first seat surface 21H extends and not hindered by step across the whole length of seat board 135 along the left and right directions of chair 131.In other words, the pelvis 91 that anything suppresses seated person is not set on the left and right side of the first seat surface 21H.Therefore, step can not cause compressing to the left and right side of seated person, and the first seat surface 21H supports the buttocks of seated person.As a result, seated person can comfortable being taken one's seat and can on buttocks, do not felt feeling of stress.In addition,, even in the time that the buttocks of seated person is suspended in outside the left and right side of the first seat surface 21H, as long as the length of the left and right directions of step is greater than or equal to the distance between a pair of

ischium

911 and 911,3 stationary states also will be realized without doubt.Therefore, the length of the left and right directions of step can be reduced to the distance being for example roughly between a pair of

ischium

911 and 911, and can chair 131 be constructed compactlyer.

In the time that people is sitting in chair 131, a pair of

ischium

911 and 911 that is positioned at pelvis 91 belows is kept by the step forming by means of end face 221H, and the rumpbone 912 of human body is near backboard 133.As a result, pelvis 91 is in 3 stationary states.Therefore, provide the beneficial effect identical with embodiment 1.

In addition various sizes (for example, the maximum length of the first seat surface 21H on the fore-and-aft direction of chair 131; Be arranged in region except the zone line of the left and right directions of chair 131, be arranged in the maximum length of the second seat surface 22H on the fore-and-aft direction of chair 131 the end face 221H in the first seat surface 21H (being interarea 10H) side etc. except the second seat surface 22H) roughly the same with the size shown in embodiment 1 (Figure 13).

[embodiment 3]

Then,, with reference to Figure 16, provide according to the description of the embodiment 3 of chair of the present invention.When Figure 16, illustrate according to the stereogram of the embodiment 3 of chair of the present invention.According to the chair 165 of the present embodiment comprise seat board 156A, backboard 156B, be fixed on step on seat surface form member 161 and be fixed on backboard 156B above on wall form member 163.Chair 165 can form member 163 and is attached to and comprises that the known chairs 156 of serious sweptback backboard 156B constructs by step being formed to member 161 and wall.Step forms member 161 and combines to form single seat board with the part (forming the part between member 161 and backboard 156B at step) that seat board 156A is positioned at step formation member 161 rears.

Step form member 161 above 170 and rear end face 171 form respectively the second seat surface above and the second seat surface be arranged in the end face in the first seat surface one side, as according in the seat tool of above-described embodiment and chair.Seat board 156A be positioned at step form member 161 rears and wall form member 163 fronts part also form the first seat surface above, as according in the seat tool of above-described embodiment and chair.In the time that human body is sitting in chair 165, form the step that is positioned at the first seat surface, seat board 156A and form member 161 rears and wall and form the buttocks that supports seated person above of the part in member 163 fronts, and the step that forms the second seat surface forms the 170 thigh tops of supporting seated persons above of member 161.Rear end face 171 formation step, step formation member 161 has also suppressed a pair of

ischium

911 and 911 and has moved forward.170 the shape and size above that step forms member 161 are with to be included in shape and size according to the interarea 10K of the second seat surface 22K in the seat tool 1K of the embodiment 8 shown in Fig. 9 roughly the same, and the descriptions thereof are omitted.

Step form member 161 by use fixing means 162 (for example, binding agent and loop fasteners etc.) be attached to seat board 156A above.

Wall form member 163 by use fixing means 162 (for example, binding agent and loop fasteners etc.) be attached to backboard 156B before.Wall formation member 163 and backboard 156B roughly form the backboard of chair 165.The backboard of chair 165 be arranged in seat board one side above forming corresponding to wall in the part above of member 163, with respect to First towards upper and generally perpendicularly extend.The rumpbone 912 that the inhibition above of wall formation member 163 is sitting in the people in chair 156 moves backward.From the point of view, wall forms member 163 preferred disposition at 50mm to 350mm above base plate 156A, and more preferably, in the altitude range of 100mm to 210mm, making wall form member 163 can be near the rumpbone 912 that is sitting in the people in chair 156.In addition,, on the vertical section along fore-and-aft direction, wall forms the angle θ above and between the seat surface of chair 156 of member 163 ₆preferably be roughly right angle.Particularly, angle θ ₆preferably in the scope of 90 ° to 120 °, more preferably in the scope of 90 ° to 95 °.

Step form member 161 and wall form member 163 preferably by unlikely under user's body weight effect extruded material make.Some examples of these materials comprise wood materials, high density cloth (for example, being not easy the canvas of contraction), thermoplastic elastomer (TPE) (TPE), rubber, plastic material (for example, EVA resin) etc.

In the time that thermoplastic elastomer (TPE), rubber or plastic material are used as to this material, the hardness of material is preferably in 5 to 120 scope, more preferably in 40 to 90 scope.By hardness being set in above-mentioned preferable range, particularly in above-mentioned preferred scope, can suitably guarantee the comfort level of seated person, prevent from making step formation member 161 and wall formation member 163 produce less desirable distortion owing to using for a long time step formation member 161 and wall to form member 163 simultaneously.

The maximum length of the first seat surface on the fore-and-aft direction of chair 165 (, wall form member 163 above and step forms between the lower end of back of the body end face 171 of member 161, the ultimate range of the fore-and-aft direction of chair 165) at 70mm in the scope of 250mm.For example, for adapting to have the masculinity and femininity adult of standard figure, above-mentioned distance is preferably in 100mm arrives the scope of 200mm, more preferably in 150mm arrives the scope of 170mm.For example, in order to adapt to primary school's age or young children, above-mentioned distance is preferably in 70mm arrives the scope of 150mm.Bend to rearwardly projecting old man's etc. the posture of taking one's seat in order to improve as much as possible backbone 92, above-mentioned distance also preferably at 200mm in the scope of 250mm.

According to embodiment 3, user can be simply forms member 163 and is attached to and can not keeps the chair 156 of 3 stationary states to realize the chair 165 that can keep 3 stationary states by step being formed to member 161 and wall.Therefore, in the time that attaching step forms member 161 and wall formation member 163, user can suitably regulate wall to form the ultimate range of the fore-and-aft direction between member 163 and step formation member 161 according to the size of user's pelvis 91 in the scope of above-mentioned value.

In addition, when being included in backboard 156B in chair 165 when substantially vertical with respect to seat board 156A, without using wall to form member 163.

Various sizes (for example, be arranged in region except the zone line of the left and right directions of chair 165, be arranged in the second seat surface the end face in the first seat surface (being interarea 170) side maximum length on the fore-and-aft direction of chair 165 except the second seat surface) roughly the same with those sizes embodiment 1 (Figure 13) described.

Although described according to the embodiment of seat tool of the present invention and chair, the invention is not restricted to above-described embodiment, and can comprise various amendments and change.For example, the technology element described in an embodiment also can be applied in other embodiment.

Industrial applicibility

Be specially adapted to according to seat of the present invention tool and chair seat tool and the chair that those worked long hours, and drove, learn, saw drama, see sports tournament etc.In addition, due to compactedness, be suitable for being placed on according to seat of the present invention tool and chair and be built in building (particularly, extensive type building (for example, auditorium and gymnasium etc.)) in chair, office chair, for chair or the bed nursed, tables and chairs, public bench, vehicle seat, support, on chair lift or wheelchair etc. in skifield, or as being built in building (particularly, extensive building (for example, auditorium and gymnasium etc.)) in chair, office chair, for chair or the bed nursed, tables and chairs, public bench, vehicle seat, support, chair lift or wheelchair etc. in skifield.

Reference numeral

1,1A, 1B, 1C, 1D, 1E, 1F, 1J, 1K, 1M, 1N seat tool

2,2B, 2C, 2D, 2E, 2F, 2G, 2H, 2J, 2K, 2M, 2N seat surface

3,3A, 3B, 3C, 3D, 3E, 3F, 3J, 3K, 3M, 3N seat board

4 surface members

5 cloth

7,101,131,156,165 chairs

8 walls

9 horizontal planes

10,10B, 10C, 10D, 10E, 10F, 10G, 10H, 10J, 10K, 10M, 10N interarea

11,11F, 11J reverse side

12 back seat plates

13 concavo-convex

21,21B, 21C, 21D, 21E, 21F, 21G, 21H, 21J, 21K, 21M, 21N the first seat surface

22,22B, 22C, 22D, 22E, 22F, 22G, 22H, 22J, 22K, 22M, 22N the second seat surface

The backboard of 31 tools

71,110,135, the seat board of 156A chair

The seat surface of 72 chairs

73,103,133, the backboard of 156B chair

91 pelvises

92 backbones

104,134 leg section

105 connecting plates

106 bolts

107 fasteners

108 first seat boards

109 second seat boards

138 fixtures

The spine of 140N upper face side

The spine of 141N reverse side

152,157,158 supporters

The base plate of 152A, 157A, 158A supporter

The backboard of 152B, 157B supporter

153 lower pad

154 upper liner

155,162,164 fixing means

The second backboard portion of 158B supporter

The first backboard portion of 158C supporter

159 grooves

161 steps form member

163 walls form member

Above 170 steps formation members

171 steps form the rear end face of member

211,211B, 211C, 211D, 211E, 211F, 211G, 211H, 211J, 211K, 211M, 211N hinder marginal part

221, the end face on the side that is arranged on the first seat surface of 221B, 221C, 221D, 221E, 221F, 221G, 221H, 221J, 221K, 221M, 221N the second seat surface

222,222B, 222C, 222D, 222E, 222F, 222G, 222H, 222J, 222K, 222M, 222N exterior region

223 pipes

224 tubulose obturators

225 cores

230F hard material seat board

232F soft material seat board

300,302,304 zone lines

301,303,305 left and right side regions (region except zone line)

911 ischiums

912 rumpbones

Claims

1. a seat tool, it comprises seat board, described seat board comprises:

The first seat surface; And

2. according to claim 1 tool, wherein

Be arranged in described end face in described the first seat surface one side bending or the flexing in top view of described the second seat surface become towards the described front projection of described seat tool.

3. according to claim 1 and 2 tool, wherein

Be arranged in described the second seat surface described end face region, except described the first seat surface one side of being arranged in of described the second seat surface in except the zone line of the described left and right directions of described seat tool maximum length on the fore-and-aft direction of described tool and be less than the maximum length of described the first seat surface on the described fore-and-aft direction of described tool.

4. according to the seat tool described in any one in claims 1 to 3, wherein

The maximum length of described the first seat surface on the fore-and-aft direction of described seat tool at 70mm in the scope of 250mm, and

Be arranged in described the second seat surface described end face region, in described the first seat surface one side of being arranged in of described the second seat surface except the zone line of the left and right directions of described seat tool maximum length on the described fore-and-aft direction of described tool and be less than or equal to 150mm.

5. according to the seat tool described in any one in claim 1 to 4, also comprise:

Backboard, its end described the first seat surface one side of being arranged in of described seat board is extended and generally perpendicularly extends with respect to described seat board at least in part.

6. according to the seat tool described in any one in claim 1 to 4, also comprise:

Supporter, it supports described seat board, and described supporter comprises:

Base plate, described seat board is placed on described base plate; And

7. a chair, it comprises seat board, backboard and leg section, described seat board comprises:

The first seat surface; And

8. a chair, it comprises seat board, backboard and leg section, described seat board comprises:

The first seat surface; And