JPH08268128A - Seat device with adjusting mechanism - Google Patents

Abstract

PURPOSE: To reduce fatigue given to a seated person by immediately selecting normal posture and relaxed posture by providing a vertically adjusting mechanism and an interlocked seat execution adjusting mechanism. CONSTITUTION: A female screw 57 is installed on the power part of a second link 41, an X-type link, at the rear part of a seat. Thus, interlocking is made with the axial movement of a trapezoidal screw 56 in the female screw 57. The roller 47B of the second link 41 is moved to the front of the seat 4 along an elliptical hole 45B. A first link 40 and the second link 41 are crossed with each other in an X shape and are pivotally mounted at the cross point by means of a pivot 62. The roller 47A of the first link 40 is also moved to the front of the seat 4 along an elliptical hole 45A. The degree of the movement of the female screw 57 is moved by the longitudinal lengths of the elliptical holes 45A and 45B. The seat 4 is vertically moved in the height direction in accordance with the effective lengths of the elliptical holes 45A and 45B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat device with an adjusting mechanism suitable for use as a rear seat of a railway vehicle or a leisure car.

[0002]

2. Description of the Related Art Seats used in vehicles such as trains, airplanes, and leisure cars are reclining seats that allow the seat back to be freely adjusted to suit the seated person's taste and to maintain a comfortable posture. Widely used.

Various types of mechanisms have been proposed as a seat having such a reclining mechanism, but generally, the structure is as shown in FIG.

In FIG. 7, the seat device 1 includes a seat 4 installed on a seat base 3 arranged on a mounting base 2 and the seat 4.
A seat back 6 whose tilt angle can be changed back and forth around the reclining rotation pivot 5 is provided in the rear of the seat. In addition, 7 is an armrest part.

In the seat device 1 having such a reclining mechanism, since the reclining rotation pivot 5 is provided at a position far away from the hip point 8 of the seated person, the seat back 6 is tilted by a predetermined angle by the reclining adjustment mechanism. There is a problem that the lumbar support position and the rest position on which the head is placed are displaced. As a result, there is a drawback in that the seating comfort is greatly different between the state in which the seat back 6 is tilted by adjusting the reclining adjustment mechanism and the state in which the seat back 6 is raised. However, the reclining adjustment mechanism having this structure is simple in structure and can be manufactured at extremely low cost, and is widely used.

In order to make up for the drawbacks of the reclining adjustment mechanism as described above, a slide reclining seat device is widely used mainly as a seat for railway vehicles and the like.

As shown in FIG. 8, this slide reclining seat device is constructed such that the seat back 6 is tilted according to the operation of the reclining adjustment mechanism and the seat portion is slid in conjunction with this operation. Is.

That is, in FIG. 8, the portions corresponding to those in FIG. 7 are designated by the same reference numerals, and the duplicate description will be omitted. In this configuration, the seat 4 is placed on the slide base 9 on the seat base 3. Placed L
Since one end of the link mechanism 100 composed of a character-shaped arm is pivotally attached to the slide base 9 and the other end is pivotally attached to the reclining rotation pivot 5, the reclining adjustment mechanism is operated to incline the seat back 6. Are slid forward as indicated by phantom lines.

Compared with the seat device of FIG. 7, the seat device of this structure has a hip point 8 and a seat back 6 of the seated person.
The displacement of the center of rotation is small and the sitting comfort is improved, but the mechanism is complicated and expensive.

Further, as a seat device having a vertical movement adjusting mechanism provided on the seat, a structure in which a parallelogram link is provided between a mounting base and a seat base on which the seat is placed is disclosed in Japanese Utility Model Publication No. 50-
No. 17536 and Japanese Utility Model Publication No. 46-16895, and one provided with an X-shaped link mechanism is disclosed in Japanese Utility Model Publication No. 57-122426.

Further, a seat device having a tilt adjusting mechanism for adjusting the inclination angle of the seat and a depth adjusting mechanism for moving the seat in the depth direction is also well known.

Further, Japanese Utility Model Laid-Open No. 4-3049 discloses a seat device in which a footrest portion placed in front of the seat is interlocked vertically depending on the inclination angle of the reclining seat.

[0013]

In each seat device described in the above-mentioned conventional structure, the vertical adjustment mechanism, the depth adjustment mechanism, the tilt adjustment mechanism and the reclining adjustment mechanism are operated individually, or the reclining operation and the seat depth adjustment are performed. The mechanism (slide mechanism) is interlocked, or the footrest portion placed in front of the seat is interlocked vertically depending on the tilt angle of the reclining seat. In the interlocked configuration, the seat shifts in the normal posture and in the relaxed posture, and the seat depth is too deep or too shallow depending on the seated person's body when sitting and the heel also rises from the floor. There was a bad effect that it was too much.

The present invention has been made so as to eliminate the above-mentioned adverse effects, and the purpose thereof is to allow a person of various body types to immediately select a normal posture or a relaxed posture, which reduces fatigue of the seated person. A seat device with an adjusting mechanism that can be reduced is provided.

[0015]

A seat device with an adjusting mechanism according to a first aspect of the present invention includes a vertical adjusting mechanism for vertically moving a seat on a seat base by a link mechanism provided between a mounting base and a seat base. The seat apparatus with an adjusting mechanism has a seat depth adjusting mechanism that interlocks with the vertical adjusting mechanism.

A seat device with an adjusting mechanism according to the second aspect of the present invention is
In a seat device with an adjusting mechanism having a seat arranged on a seat base and a reclining mechanism for reclining a seat back pivotally mounted at a rear portion of the seat, the seat device interlocked with the operation of the reclining mechanism. Then, a tilt adjusting mechanism for adjusting the inclination angle of the seat is provided.

A seat device with an adjusting mechanism according to a third aspect of the present invention is
The seat depth adjusting mechanism interlocking with the vertical adjusting mechanism and the tilt adjusting mechanism interlocking with the reclining adjusting mechanism are provided.

[0018]

In the seat device with the adjusting mechanism of the present invention, when the seat back is tilted from the reclining start position, the front end of the seat is tilted up in conjunction with the reclining operation. Further, when the vertical adjustment mechanism is operated, the depth adjustment mechanism in which the seat slides back and forth operates in conjunction with the movement of the seat up and down.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a seat device with an adjusting mechanism of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a side view showing a configuration in which a reclining mechanism and a tilt mechanism are interlocked as a seat device with an adjusting mechanism of the present invention, and FIG. 2 is a plan view of the tilt mechanism.

In FIGS. 1 and 2, the seat device 1 is composed of a seat base 3 on which a mounting base 2 and a seat 4 are placed, and a seat back 6. The mounting base 2 is formed in a rectangular parallelepiped box shape, and the mounting base 2 is also covered with a box-shaped seat base 3, on which seat 4 and seat back 6 are provided.
The seat back 6 can be tilted at a predetermined angle by a reclining mechanism.

The above-mentioned seat base 3 is slidable along the height direction of the mounting base 2. A link receiving fitting 11 is fixed to the upper surface plate 10 of the mounting base 2.

One end of the reclining link arm 12 constituting the reclining mechanism is pivotally attached to the reclining rotation pivot 5 of the seat back 6, and the other end of the reclining link arm 12 is pivotally attached to the connecting arm 13. Has been done.

An elliptic hole 1 is provided at the pivot point of the connecting arm 13.
4 is pierced, and a pivot point is pivotally mounted via a pin 15 so as to be movable in the long axis direction of the elliptical hole.

The connecting arm 13 is at a substantially intermediate position, and the shaft 1 is attached to the link receiving metal fitting 11 fixed to the upper plate 10.
6 is pivotally mounted via 6, and a rod 18 is pivotally mounted via a shaft 17R on the side opposite to the end of the connecting arm 13 in which the elliptical hole 14 is formed.

Pivot fittings 19L and 19R are fitted to both ends of the rod 18, and shafts 17L and 17R are fitted to the pivot fittings.
Is provided.

A rotational force transmitting link arm 20 is rotatably pivotally attached to the shaft 17L of the pivotal fitting 19L. The other end of the rotational force transmission link arm 20 is fixed to the shaft 21 constituting the seat tilt link mechanism by welding or the like.
A plan view of the seat tilt link mechanism as viewed from the direction A is shown in FIG.

The seat tilt link mechanism will be described with reference to FIGS. 1 and 2. The inverted U-shaped metal fitting 2 fixed to the left side wall 23 on the side opposite to the link receiving metal fitting 11 of the top plate 10 of the mounting base 2.
A shaft 21 is rotatably pivotally mounted between L-shaped brackets 24 and 24 protruding from the shaft 2, and a rotational force transmission link arm 20 is fixed to a substantially intermediate position of the shaft 21. Therefore, when the rod 18 is moved in the direction of arrow B in FIG. 2, the shaft 21 rotates between the brackets 24 and 24 in the counterclockwise direction in FIG.

Tilt links 25 and 25 for tilting the front portion of the seat 4 are provided at both ends of the shaft 21 by welding or the like.
It is fixed to. These tilt links 25 and 25
At the tip of the screws 26 and 26 are spacers 27 and 27.
Rollers 28 and 28 are rotatably and pivotally mounted via.

The rollers 28 and the roller surface of 28 are the sheet 4
The roller receiving plate 29 arranged at the lower end of the above is brought into contact with the roller receiving plate 29. The roller receiving plate 29 is cantilevered around a shaft 30 provided at the rear portion of the sheet 4.

Since the reclining mechanism and the tilt mechanism are interlocked with each other in the above-described seat device structure, a seat device with an adjusting mechanism that can be adjusted to a working posture when seated and a relaxed posture can be obtained. A tilting mechanism compensates for the forward displacement of the seat 4 when the seat 6 reclines, so that the seated person's optimum posture is maintained.

The operation of the above-described structure will be described. First, the seat back 6 is moved from the normal state where it is not reclined.
When the seat back 6 is tilted rearward as shown by an imaginary line by the reclining operation, its rotational force rotates clockwise around the reclining rotation pivot 5 in FIG. 1, and the reclining link arm 12 rotates the reclining rotation pivot. Rotate clockwise about 5 as shown by a virtual line.

At this time, a counterclockwise turning force is applied such that the pin 15 slides in the elliptical hole 14 and the connecting arm 13 stands up about the shaft 16. Therefore, the connecting arm 1
The shaft 17R side of 3 is counterclockwise around the shaft 16 (direction B)
Then, the rod 18 is pulled in the direction of arrow B.

At the other end of the rod 18, a rotational force transmission link 20 rotates a shaft 21 constituting a seat tilt link mechanism in a counterclockwise direction about the brackets 24 and 24 as a rotation center via a shaft 17L. Therefore, the tilt links 25 and 25
The rollers 28, which are rotatably pivotally attached to the tip of the roller 28, rotate in the counterclockwise direction about the shaft 21 while rotating along the roller receiving plate 29 arranged on the back side of the sheet 4, and the roller receiving plate 29 is rotated. Moves upward on the cantilevered support shaft 30,
So-called tilt up.

When the seat back 6 tilted rearward is returned to the front, the operation is the reverse of the above-mentioned operation, and the front of the tilted-up roller receiving plate 29 is lowered to restore the seat 4 to the original state. It is made to do.

Next, referring to FIG. 3, a depth adjusting mechanism in which the seat slides in conjunction with a height adjusting mechanism for adjusting the height of the seat will be described. Although FIG. 3 shows a configuration in which a tilt mechanism that interlocks with the reclining mechanism described in FIGS. 1 and 2 is added, only the depth adjustment mechanism that interlocks with the height adjustment mechanism will be described in this example.

Incidentally, FIG. 3 is a side view, and parts corresponding to those in FIGS.

That is, as the height adjusting mechanism, two links 40 and 41 formed in an X shape are interposed between the mounting base 2 and the seat base 3 as an X type link mechanism.

The front end of the first link 40 is rotatably attached to a bracket 42 which is erected from the bottom plate of the mount 2 by a pivot 43. The front end of the second link 41 is pivotally attached to the side wall of the seat base 3 and the like by a shaft 44.

A shaft 46A is slidably attached to the other end of the first link 40 along an elliptical hole 45A formed in the side wall of the seat base 3 at the rear portion of the seat 4, and a roller is mounted on the shaft 46A. Four
7A is rotatably pivotally attached. And the roller 47
A is in rolling contact with the link receiving portion 48 on the back surface of the seat base 3, and is capable of moving the seat 4 in the front-rear direction and the up-down direction.
A roller receiving plate 29 provided on the back side of the sheet 4 in this layer
The frame 49 supporting the shaft and the shaft 46 are connected by a support plate 50.

The other end of the second link 41 is connected to the shaft 4 along an elliptical hole 45B formed in the side wall of the mounting base 2 at the rear portion of the seat 4.
6B is slidably pivotally mounted, and a roller 47 is attached to the shaft 46B.
B is pivotably attached. And the roller 47B
Is in contact with the link receiver 51 arranged on the upper surface of the mount 2,
The seat 4 is moved in the front-rear direction to adjust the depth, and the seat 4 is moved in the vertical direction to adjust the height.

FIG. 4 is a plan view of the arrow C view of FIG. In FIGS. 4 and 3, the rotary shaft 4 on the mounting base 2 side
The second links 41 and 41 on the left and right of 6B are connected by a connecting member 52. A cradle 58 having a female screw 57 such as a nut for receiving the rotational force of a trapezoidal screw 56 coupled to a motor shaft 54 of an X-type link mechanism operating motor 53 via a coupling 55 is fixed to an intermediate position of the connecting member 52. Have. The cradle 58 is rotatably attached to the axis center of the connecting member 52. The trapezoidal screw 56 is pivotally supported between the brackets 60 and 61.

In the above-mentioned seat device, the seat is slid in conjunction with the seat height adjusting mechanism so that the depth is automatically adjusted, so that the seat shape can be adjusted depending on the height of the seated person. The seating posture can be automatically adjusted appropriately by the motor by linking the seat height and the seat depth.

The operation of the seat depth adjusting mechanism interlocked with the seat height adjusting mechanism will be described. First, when the motor drive switch attached to the armrest 7 or the like is pressed, the motor 53 on the attachment base 2 is activated. By driving, the trapezoidal screw 56 directly connected to the motor shaft 54 is rotated. By receiving the rotational force of the trapezoidal screw 56, the female screw 57 such as a nut moves in the axial direction of the trapezoidal screw 56.

Since the female screw 57 is attached below the second link 41 of the X-shaped link at the rear portion of the seat, the female screw 57 is interlocked with the axial movement of the trapezoidal screw 56 of the female screw 57 and the second link 41 of the second screw 41. The roller 47B moves to the front of the sheet 4 along the elliptical hole 45B. Since the first and second links 40 and 41 are pivotally attached to each other by the pivot 62 at the intersection where they are crossed in an X shape, the roller 47A of the first link 40 is also elliptical hole 4.
Move forward of the seat 4 along 5A.

The amount of movement of the female screw 57 depends on the elliptical holes 45A and 4A.
The sheet 4 can be moved by the length in the longitudinal direction of 5B, and the seat 4 can be moved up and down in the height direction according to the effective length of the elliptical holes 45A and 45B.

Of course, since the seat 4 also moves in the front direction of the seat device 1 by the effective length of the elliptical holes 45A and 45B, the depth dimension of the seat can be adjusted.

In this case, as the height of the seat 4 increases, the depth dimension of the seat increases proportionally to the amount of forward movement, resulting in a larger size.

If the motor 53 is reversely rotated in the direction in which the position of the seat 4 is lowered from the higher position, the seat 4 is lowered to the lowest position by the operation reverse to the above operation, and the seat 4 is moved to the innermost position.

In the above-mentioned embodiment, a seat device having a tilt adjusting mechanism which is interlocked with the reclining adjusting mechanism,
The seat apparatus having the vertical height adjusting mechanism for seat height adjustment and the seat depth mechanism has been described. However, an adjusting mechanism interlocked with these, that is, a tilt adjusting mechanism interlocking with a reclining adjusting mechanism and a vertical height adjusting mechanism for seat height adjustment are described. The effect of the present invention can be made more conspicuous by adopting the configuration as shown in FIG. 3 in which the seat depth mechanism and the seat depth mechanism are integrated into one seat device.

According to the seat device with the adjusting mechanism of the present invention,
When people of various body types are seated, even if 90% of the seated persons are seated as shown in FIGS. 5 and 6, the posture when working or in a relaxed posture corresponding to the body type of the person is The automatically selectable one was obtained.

That is, the height and weight are the 5th percentile (pe
rcentile: If a small person 65 with a percentile (divided amount when the distribution of displacement is divided into 100 parts) is seated, 5% of people will have a seat depth It is too deep to support the lumbar region. In addition, the heel also floats from the floor, making it unsuitable for long-term sitting. On the other hand, in the seat device with the tilt mechanism that interlocks with the reclining mechanism and the depth adjustment mechanism that interlocks with the vertical adjustment mechanism as in this example, even the person with the 5th percentile has an appropriate depth and the lumbar portion is supported by the seatback. As shown in FIG. 5, a seat device was obtained in which the heel could be seated without any lifting, and fatigue was not felt even after sitting for a long time.

Further, when a large-sized person 66 of 95th percentile is seated, 95% of people in a normal seat apparatus feels cramped due to insufficient height and depth of the seat, but in the present invention, 95th percentile. As shown in FIG. 6, even a person with the above-mentioned structure can eliminate the feeling of tightness and reduce fatigue.

[0053]

As described above in detail, according to the present invention, 90% of persons from the 5th percentile to the 95th percentile have 90% of the persons seated while seated, and the causes of fatigue such as cramping and heel lifting have been eliminated. A seat device with a mechanism is obtained. Moreover, the normal posture and the relaxed posture can be immediately selected even if people of various body types are seated.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of a seat device with an adjusting mechanism of the present invention.

FIG. 2 is a plan view of the seat device with an adjusting mechanism of the present invention viewed from the direction A in FIG.

FIG. 3 is a schematic side view showing another embodiment of the seat device with an adjusting mechanism of the present invention.

FIG. 4 is a plan view of the seat device with an adjusting mechanism of the present invention viewed from the direction B in FIG.

FIG. 5 is a side view for explaining the effect of the seat device with an adjusting mechanism of the present invention at the 5th percentile when a person is seated.

FIG. 6 is a side view for explaining the effect of the 95th percentile of the seat device with an adjusting mechanism of the present invention when a person is seated.

FIG. 7 is a side view of a seat device having a conventional reclining mechanism.

FIG. 8 is a side view of a seat device in which a seat slides in conjunction with conventional reclining.

[Explanation of symbols]

 1 seat device 2 mounting base 3 seat base 6 seat back 15 connecting arm 18 rod 28 roller 40, 41 link 45A, 45B elliptical hole 47A, 47B roller 56 trapezoidal screw 57 female screw (nut)

[Procedure amendment]

[Submission date] May 17, 1995

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title of the invention Seat device with adjusting mechanism

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat device with an adjusting mechanism suitable for use as a rear seat of a railway vehicle or a leisure car.

[0002]

2. Description of the Related Art Seats used in vehicles such as trains, airplanes, and leisure cars are reclining seats that allow the seat back to be freely adjusted to suit the seated person's taste and to maintain a comfortable posture. Widely used.

Various types of mechanisms have been proposed as a seat having such a reclining mechanism, but generally, the structure is as shown in FIG.

In FIG. 7, the seat device 1 includes a seat 4 installed on a seat base 3 arranged on a mounting base 2 and the seat 4.
A seat back 6 whose tilt angle can be changed back and forth around the reclining rotation pivot 5 is provided in the rear of the seat. In addition, 7 is an armrest part.

In the seat device 1 having such a reclining mechanism, since the reclining rotation pivot 5 is provided at a position far away from the hip point 8 of the seated person, the seat back 6 is tilted by a predetermined angle by the reclining adjustment mechanism. There is a problem that the lumbar support position and the rest position on which the head is placed are displaced. As a result, there is a drawback in that the seating comfort is greatly different between the state in which the seat back 6 is tilted by adjusting the reclining adjustment mechanism and the state in which the seat back 6 is raised. However, the reclining adjustment mechanism having this structure is simple in structure and can be manufactured at extremely low cost, and is widely used.

In order to make up for the drawbacks of the reclining adjustment mechanism as described above, a slide reclining seat device is widely used mainly as a seat for railway vehicles and the like.

As shown in FIG. 8, this slide reclining seat device is constructed such that the seat back 6 is tilted according to the operation of the reclining adjustment mechanism and the seat portion is slid in conjunction with this operation. Is.

That is, in FIG. 8, the portions corresponding to those in FIG. 7 are designated by the same reference numerals, and the duplicate description will be omitted. In this configuration, the seat 4 is placed on the slide base 9 on the seat base 3. Placed L
Since one end of the link mechanism 100 composed of a character-shaped arm is pivotally attached to the slide base 9 and the other end is pivotally attached to the reclining rotation pivot 5, the reclining adjustment mechanism is operated to incline the seat back 6. Are slid forward as indicated by phantom lines.

Compared with the seat device of FIG. 7, the seat device of this structure has a hip point 8 and a seat back 6 of the seated person.
The displacement of the center of rotation is small and the sitting comfort is improved, but the mechanism is complicated and expensive.

Further, as a seat device having a vertical movement adjusting mechanism provided on the seat, a structure in which a parallelogram link is provided between a mounting base and a seat base on which the seat is placed is disclosed in Japanese Utility Model Publication No. 50-
No. 17536 and Japanese Utility Model Publication No. 46-16895, and one provided with an X-shaped link mechanism is disclosed in Japanese Utility Model Publication No. 57-122426.

Further, a seat device having a tilt adjusting mechanism for adjusting the inclination angle of the seat and a depth adjusting mechanism for moving the seat in the depth direction is also well known.

Further, Japanese Utility Model Laid-Open No. 4-3049 discloses a seat device in which a footrest portion placed in front of the seat is interlocked vertically depending on the inclination angle of the reclining seat.

[0013]

In each seat device described in the above-mentioned conventional structure, the vertical adjustment mechanism, the depth adjustment mechanism, the tilt adjustment mechanism and the reclining adjustment mechanism are operated individually, or the reclining operation and the seat depth adjustment are performed. The mechanism (slide mechanism) is interlocked, or the footrest portion placed in front of the seat is interlocked vertically depending on the tilt angle of the reclining seat. In the interlocked configuration, the seat shifts in the normal posture and in the relaxed posture, and the seat depth is too deep or too shallow depending on the seated person's body when sitting and the heel also rises from the floor. There was a bad effect that it was too much.

The present invention has been made so as to eliminate the above-mentioned adverse effects, and the purpose thereof is to allow a person of various body types to immediately select a normal posture or a relaxed posture, which reduces fatigue of the seated person. (EN) Provided is a seat device with an adjusting mechanism that can be reduced.

[0015]

A seat device with an adjusting mechanism according to a first aspect of the present invention includes a vertical adjusting mechanism for vertically moving a seat on a seat base by a link mechanism provided between a mounting base and a seat base. The seat device with an adjusting mechanism has a seat depth adjusting mechanism that interlocks with the vertical adjusting mechanism.

A seat device with an adjusting mechanism according to the second aspect of the present invention is
In a seat device with an adjusting mechanism having a seat disposed on a seat base and a reclining mechanism for reclining a seat back pivotally mounted on a rear portion of the seat, the seat device interlocked with the operation of the reclining mechanism. Then, a tilt adjusting mechanism for adjusting the inclination angle of the seat is provided.

A seat device with an adjusting mechanism according to a third aspect of the present invention is
The seat depth adjusting mechanism interlocking with the vertical adjusting mechanism and the tilt adjusting mechanism interlocking with the reclining adjusting mechanism are provided.

[0018]

In the seat device with the adjusting mechanism of the present invention, when the seat back is tilted from the reclining start position, the front end of the seat is tilted up in conjunction with the reclining operation. Further, when the vertical adjustment mechanism is operated, the depth adjustment mechanism in which the seat slides back and forth operates in conjunction with the operation of the seat moving up and down.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a seat device with an adjusting mechanism of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a side view showing a configuration in which a reclining mechanism and a tilt mechanism are interlocked as a seat device with an adjusting mechanism of the present invention, and FIG. 2 is a plan view of the tilt mechanism.

In FIGS. 1 and 2, the seat device 1 is composed of a seat base 3 on which a mounting base 2 and a seat 4 are placed, and a seat back 6. The mounting base 2 is formed in a rectangular parallelepiped box shape, and the mounting base 2 is also covered with a box-shaped seat base 3, on which seat 4 and seat back 6 are provided.
The seat back 6 can be tilted at a predetermined angle by a reclining mechanism.

The above-mentioned seat base 3 is slidable along the height direction of the mounting base 2. A link receiving fitting 11 is fixed to the upper surface plate 10 of the mounting base 2.

One end of the reclining link arm 12 constituting the reclining mechanism is pivotally attached to the reclining rotation pivot 5 of the seat back 6, and the other end of the reclining link arm 12 is pivotally attached to the connecting arm 13. Has been done.

An elliptic hole 1 is provided at the pivot point of the connecting arm 13.
4 is pierced, and a pivot point is pivotally mounted via a pin 15 so as to be movable in the long axis direction of the elliptical hole.

The connecting arm 13 is at a substantially intermediate position, and the shaft 1 is attached to the link receiving metal fitting 11 fixed to the upper plate 10.
6 is pivotally mounted via 6, and a rod 18 is pivotally mounted via a shaft 17R on the side opposite to the end of the connecting arm 13 in which the elliptical hole 14 is formed.

Pivot fittings 19L and 19R are fitted to both ends of the rod 18, and shafts 17L and 17R are fitted to the pivot fittings.
Is provided.

A rotational force transmitting link arm 20 is rotatably pivotally attached to the shaft 17L of the pivotal fitting 19L. The other end of the rotational force transmission link arm 20 is fixed to the shaft 21 constituting the seat tilt link mechanism by welding or the like.
A plan view of the seat tilt link mechanism as viewed from the direction A is shown in FIG.

The seat tilt link mechanism will be described with reference to FIGS. 1 and 2. The inverted U-shaped metal fitting 2 fixed to the left side wall 23 on the side opposite to the link receiving metal fitting 11 of the top plate 10 of the mounting base 2.
A shaft 21 is rotatably pivotally mounted between L-shaped brackets 24 and 24 protruding from the shaft 2, and a rotational force transmission link arm 20 is fixed to a substantially intermediate position of the shaft 21. Therefore, when the rod 18 is moved in the direction of arrow B in FIG. 2, the shaft 21 rotates between the brackets 24 and 24 in the counterclockwise direction in FIG.

Tilt links 25 and 25 for tilting the front portion of the seat 4 are provided at both ends of the shaft 21 by welding or the like.
It is fixed to. These tilt links 25 and 25
At the tip of the screws 26 and 26 are spacers 27 and 27.
Rollers 28 and 28 are rotatably and pivotally mounted via.

The rollers 28 and the roller surface of 28 are the sheet 4
The roller receiving plate 29 arranged at the lower end of the above is brought into contact with the roller receiving plate 29. The roller receiving plate 29 is cantilevered around a shaft 30 provided at the rear portion of the sheet 4.

Since the reclining adjustment mechanism and the tilt adjustment mechanism are interlocked with each other in the above-described seat device configuration, a seat device with an adjustment mechanism that can be adjusted to a working posture when sitting and a relaxing posture is obtained. When the seat back 6 reclines, the forward displacement of the seat 4 is compensated by the tilt mechanism, so that the optimum posture of the seated person is maintained.

The operation of the above-described structure will be described. First, the seat back 6 is moved from the normal state where it is not reclined.
When the seat back 6 is tilted rearward as shown by an imaginary line by the reclining operation, its rotational force rotates clockwise around the reclining rotation pivot 5 in FIG. 1, and the reclining link arm 12 rotates the reclining rotation pivot. Rotate clockwise about 5 as shown by a virtual line.

At this time, a counterclockwise turning force is applied such that the pin 15 slides in the elliptical hole 14 and the connecting arm 13 stands up about the shaft 16. Therefore, the connecting arm 1
The shaft 17R side of 3 is counterclockwise around the shaft 16 (direction B)
Then, the rod 18 is pulled in the direction of arrow B.

At the other end of the rod 18, a rotational force transmission link 20 rotates a shaft 21 constituting a seat tilt link mechanism in a counterclockwise direction about the brackets 24 and 24 as a rotation center via a shaft 17L. Therefore, the tilt links 25 and 25
The rollers 28, which are rotatably pivotally attached to the tip of the roller 28, rotate in the counterclockwise direction about the shaft 21 while rotating along the roller receiving plate 29 arranged on the back side of the sheet 4, and the roller receiving plate 29 is rotated. Moves upward on the cantilevered support shaft 30,
So-called tilt up.

When the seat back 6 tilted rearward is returned to the front, the operation is the reverse of the above-mentioned operation, and the front of the tilted-up roller receiving plate 29 is lowered to restore the seat 4 to the original state. It is made to do.

Next, referring to FIG. 3, a depth adjusting mechanism in which the seat slides in conjunction with a height adjusting mechanism for adjusting the height of the seat will be described. Although FIG. 3 shows a configuration in which a tilt mechanism that interlocks with the reclining mechanism described in FIGS. 1 and 2 is added, only the depth adjustment mechanism that interlocks with the height adjustment mechanism will be described in this example.

Incidentally, FIG. 3 is a side view, and parts corresponding to those in FIGS.

That is, as the height adjusting mechanism, two links 40 and 41 formed in an X shape are interposed between the mounting base 2 and the seat base 3 as an X type link mechanism.

The front end of the first link 40 is rotatably attached to a bracket 42 which is erected from the bottom plate of the mount 2 by a pivot 43. The front end of the second link 41 is pivotally attached to the side wall of the seat base 3 and the like by a shaft 44.

A shaft 46A is slidably attached to the other end of the first link 40 along an elliptical hole 45A formed in the side wall of the seat base 3 at the rear portion of the seat 4, and a roller is mounted on the shaft 46A. Four
7A is rotatably pivotally attached. And the roller 47
A is in rolling contact with the link receiving portion 48 on the back surface of the seat base 3, and is capable of moving the seat 4 in the front-rear direction and the up-down direction.
A roller receiving plate 29 provided on the back side of the sheet 4 in this layer
The frame 49 supporting the shaft and the shaft 46 are connected by a support plate 50.

The other end of the second link 41 is connected to the shaft 4 along an elliptical hole 45B formed in the side wall of the mounting base 2 at the rear portion of the seat 4.
6B is slidably pivotally mounted, and a roller 47 is attached to the shaft 46B.
B is pivotably attached. And the roller 47B
Is in contact with the link receiver 51 arranged on the upper surface of the mount 2,
The seat 4 is moved in the front-rear direction to adjust the depth, and the seat 4 is moved in the vertical direction to adjust the height.

FIG. 4 is a plan view of the arrow C view of FIG. In FIGS. 4 and 3, the rotary shaft 4 on the mounting base 2 side
The second links 41 and 41 on the left and right of 6B are connected by a connecting member 52. A cradle 58 having a female screw 57 such as a nut for receiving the rotational force of a trapezoidal screw 56 coupled to a motor shaft 54 of an X-type link mechanism operating motor 53 via a coupling 55 is fixed to an intermediate position of the connecting member 52. Have. The cradle 58 is rotatably attached to the axis center of the connecting member 52. The trapezoidal screw 56 is pivotally supported between the brackets 60 and 61.

In the above-mentioned seat device, the seat is slid in conjunction with the seat height adjusting mechanism so that the depth is automatically adjusted, so that the seat shape can be adjusted depending on the height of the seated person. The seating posture can be automatically adjusted appropriately by the motor by linking the seat height and the seat depth.

The operation of the seat depth adjusting mechanism interlocked with the seat height adjusting mechanism will be described. First, when the motor drive switch attached to the armrest 7 or the like is pressed, the motor 53 on the attachment base 2 is activated. By driving, the trapezoidal screw 56 directly connected to the motor shaft 54 is rotated. By receiving the rotational force of the trapezoidal screw 56, the female screw 57 such as a nut moves in the axial direction of the trapezoidal screw 56.

Since the female screw 57 is attached below the second link 41 of the X-shaped link at the rear portion of the seat, the female screw 57 is interlocked with the axial movement of the trapezoidal screw 56 of the female screw 57 and the second link 41 of the second screw 41. The roller 47B moves to the front of the sheet 4 along the elliptical hole 45B. Since the first and second links 40 and 41 are pivotally attached to each other by the pivot 62 at the intersection where they are crossed in an X shape, the roller 47A of the first link 40 is also elliptical hole 4.
Move forward of the seat 4 along 5A.

The amount of movement of the female screw 57 depends on the elliptical holes 45A and 4A.
The sheet 4 can be moved by the length in the longitudinal direction of 5B, and the seat 4 can be moved up and down in the height direction according to the effective length of the elliptical holes 45A and 45B.

Of course, since the seat 4 also moves in the front direction of the seat device 1 by the effective length of the elliptical holes 45A and 45B, the depth dimension of the seat can be adjusted.

In this case, as the height of the seat 4 increases, the depth dimension of the seat increases proportionally to the amount of forward movement, resulting in a larger size.

If the motor 53 is reversely rotated in the direction in which the position of the seat 4 is lowered from the higher position, the seat 4 is lowered to the lowest position by the operation reverse to the above operation, and the seat 4 is moved to the innermost position.

In the above-mentioned embodiment, a seat device having a tilt adjusting mechanism which is interlocked with the reclining adjusting mechanism,
The seat device having the vertical height adjustment mechanism for seat height adjustment and the seat depth adjustment mechanism has been described. However, these interlocked adjustment mechanisms, that is, the tilt adjustment mechanism interlocked with the reclining adjustment mechanism and the vertical adjustment for seat height adjustment have been described. The effect of the present invention can be made more prominent by adopting the configuration as shown in FIG. 3 in which the mechanism and the seat depth adjusting mechanism are integrated into one seat device.

According to the seat device with the adjusting mechanism of the present invention,
When people of various body types are seated, even if 90% of the seated persons are seated as shown in FIGS. 5 and 6, the posture when working or in a relaxed posture corresponding to the body type of the person is The automatically selectable one was obtained.

That is, the height and weight are the 5th percentile (p
ercentile: A small person 65 with a percentile that divides the distribution of displacements into 100 parts), 5% of the people will be seated with It is too deep to support the lumbar region. Also,
The heel also floats from the floor, making it unsuitable for long-term sitting. On the other hand, in the seat device with the tilt adjusting mechanism interlocking with the reclining adjusting mechanism and the depth adjusting mechanism interlocking with the up / down adjusting mechanism as in this example, even the person with the 5th percentile has an appropriate depth and the lumbar portion is supported by the seatback. As a result, a seat device was obtained in which the heel was not lifted as shown in FIG. 5 and seating was possible, and fatigue was not felt even after sitting for a long time.

Further, when a large-sized person 66 of 95th percentile is seated, 95% of the ordinary seat apparatuses have a short seat height and depth and feel cramped. As shown in FIG. 6, even a person with the above-mentioned structure can eliminate the feeling of tightness and reduce fatigue.

[0053]

As described in detail above, according to the present invention, 90% of persons from the 5th percentile to the 95th percentile have been relieved from fatigue causes such as cramping and heel lifting when sitting. A seat device with a mechanism is obtained. Moreover, the normal posture and the relaxed posture can be immediately selected even if people of various body types are seated.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of a seat device with an adjusting mechanism of the present invention.

FIG. 2 is a plan view of the seat device with an adjusting mechanism of the present invention viewed from the direction A in FIG.

FIG. 3 is a schematic side view showing another embodiment of the seat device with an adjusting mechanism of the present invention.

FIG. 4 is a plan view of the seat device with an adjusting mechanism of the present invention viewed from the direction B in FIG.

FIG. 5 is a side view for explaining the effect of the seat assembly with adjustment mechanism of the present invention when the person is seated at the 5th percentile.

FIG. 6 is a side view for explaining the effect of the 95th percentile of the seat device with an adjusting mechanism of the present invention when a person is seated.

FIG. 7 is a side view of a seat device having a conventional reclining mechanism.

FIG. 8 is a side view of a seat device in which a seat slides in conjunction with conventional reclining.

[Explanation of reference numerals] 1 seat device 2 mounting base 3 seat base 6 seat back 15 connecting arm 18 rod 28 roller 40, 41 link 45A, 45B elliptical hole 47A, 47B roller 56 trapezoidal screw 57 female screw (nut)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Sasaki 3-10 Fukuura, Kanazawa-ku, Yokohama, Kanagawa Prefecture

Claims (3)

[Claims] 1. A seat device with an adjusting mechanism having a vertical adjusting mechanism for vertically moving a seat on the seat base by a link mechanism provided between the mounting base and the seat base, which is interlocked with the vertical adjust mechanism. A seat device with an adjusting mechanism, comprising the depth adjusting mechanism for a seat. 2. A seat device with an adjusting mechanism, comprising a seat disposed on a seat base and a reclining mechanism for reclining a seat back pivotally attached to a rear portion of the seat, wherein the reclining mechanism comprises: A seat device with an adjusting mechanism, comprising a tilt adjusting mechanism for adjusting the inclination angle of the seat in association with the operation of the mechanism. 3. A seat device with an adjusting mechanism, comprising a seat depth adjusting mechanism interlocking with a vertical adjusting mechanism and a tilt adjusting mechanism interlocking with a reclining adjusting mechanism.