JP5823816B2 - Seat upright assist device - Google Patents

Description

  The present invention is such that when a seated person such as an elderly person or a physically weak person who is seated in a seated part stands up from the seated part, the seated part moves so as to lift the buttocks of the seated person, The present invention relates to a seating stand assisting device that assists a seated person in standing up (standing up).

  Conventionally, in a stool installed in a public place, when the seated person is an elderly person or a physically weak person with weak legs, when the seated person stands up from the seated part, the seated part of the seated person There is no standing assistance mechanism that works to lift the buttocks, and it is desirable to assist the seated person in standing up.

  As such a seat, the seat is supported on the frame via a lifting mechanism so that the seat can be moved up and down, the buffering operation start position of the seat is set steplessly by the buffer biasing mechanism, and the seat starts to be buffered due to the difference in weight Has been proposed (see Patent Document 1, for example).

Utility Model Registration No. 3070372 (paragraphs 0018, 0025, 0026)

  In the structure described in Patent Document 1, a buffer urging mechanism including a compression coil spring and a main body incorporating the compression coil spring is provided between the link mechanism and the frame. Is complicated. Further, it is necessary to set a buffering operation start position for the buffer biasing mechanism according to the weight of the seated person.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a sitting support device that can assist a seated person in standing up (standing up) without complicating the structure and has high versatility.

The invention according to claim 1 is a sitting upright assisting device in which a seating portion is rotatably provided via a hinge fixed to a front end portion of the base, and the seating portion is connected to the base via the hinge. a fixed portion connected to, and a movable portion that is movably supported in parallel to the vertical direction and the fixing part via a slide mechanism to the fixed portion, the load which the movable part receives said seat portion , is absorbed by the main damper means connecting said pedestal and said movable part has both a buffer action and biasing action, further comprising the function of assisting the translation of the fixed portion and the movable portion of the seat by an auxiliary spring At the time of sitting, first, the movable part moves obliquely downward along the surface of the fixed part while compressing the auxiliary spring, and then the main damper means is contracted, and then the main damper means While progressing the contraction Wherein a configuration pushed back by the restoring force of the auxiliary spring to the movable portion of the seat to a proper position, when standing, the repulsive force of the auxiliary spring and the main damper means is configured to simultaneously push the seat It is characterized by that. Here, the “load received by the movable part of the seating part” is a load corresponding to the weight of the seated person.

  In this way, the combination of the main damper means and the auxiliary spring can assist the standing and sitting movements of seated persons having various weights, and the versatility is enhanced.

In this case, as described in claim 2, a landing wheel is rotatably supported by the movable portion, and a slide base having an inclined surface on which the landing wheel rolls is provided on the pedestal in the front-rear direction. As described in claim 3, one end portion is rotatably connected to each side portion of the movable portion of the seating portion, and the other end is connected to a long hole portion formed in the side plate portion of the pedestal. It can be set as the structure provided with the supporting member to which the part was connected so that movement and rotation were possible.

  In addition, as described in claim 4, it is desirable to have partition plates or armrests arranged on the left and right sides of the seating part, and as described in claim 5, a plurality of the seats are arranged side by side. If the armrest is arranged between the stool, the middle part of the armrest is divided into two parts so that a seated person sitting on either side of the armrest can use the armrest. Is also possible. Here, “the middle part is divided into two parts” corresponds to an armrest part (for example, bent branch parts 25Ab and 25Ac described later) that can be used by a person sitting on the left or right stool of the armrest part. ).

  In this way, it is not necessary to share the armrest with the adjacent seated person, so it is possible to stand up (sit down) at the same time. Moreover, since it is not necessary to transfer an armrest part with an adjacent seated person, it becomes advantageous to use for a public place.

Furthermore, as described in claim 6, as a part of a plurality of stools arranged side by side in a public place, it can be used for one or a plurality of stools arranged on the stool, As described above, the public place may be a guest room of a railway vehicle as public transportation.

  Since the present invention is configured as described above, it is possible to assist a seated person having various weights in standing up and sitting. Moreover, versatility increases.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a schematic configuration of a sitting upright assisting device according to an embodiment of the present invention. It is a top view of the state which folded the said standing assistance apparatus. It is the same side view. It is a side view in the state where the seating part of the above-mentioned standing auxiliary device inclined. It is a side view in the state where the movable part of the seating part was slid downward. It is explanatory drawing of the seat using the said standing assistance apparatus. (A)-(d) is operation | movement explanatory drawing of the said standing assistance apparatus. (A)-(d) is operation | movement explanatory drawing of the said standing assistance apparatus. It is a perspective view which shows another embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the drawing shows an example, and the shape, arrangement, quantity, etc. of the main damper means, the auxiliary spring, the slide, and the landing wheel can be variously changed and combined according to the use conditions.

  As shown in FIGS. 1 to 5, the seating support device 1 according to an embodiment of the present invention has a seating portion 4 having a certain angle (for example, via a hinge 3 fixed to the front end portion of the base 2 (for example, , 40 °) so as to be able to rotate obliquely (can be undulated). The pedestal 2 serves as a base of the whole, and is installed on the upper side of the fixed base 22 as shown in FIG. A cushion 23 is fixed on the upper side of the seating portion 4, and a backrest portion 24 is arranged on the rear side. Reference numeral 25 is an armrest, and 26 is a seated person.

  In the standing assisting device 1 for the seat 21, the seating portion 4 is movable in parallel with the fixing portion 4A via the slide mechanism 5 to the fixing portion 4A connected to the base 2 via the hinge 3. And a movable portion 4B supported by the. And, the base end portion of the main damper means 11 (for example, an air damper, a gas damper, an oil damper, a damper with a coil spring, a spring structure, etc.) having a biasing action (including a spring action) and a buffering action on the base 2 Are rotatably connected via the lower mounting bracket 15A. The front end portion of the main damper means 11 is rotatably connected to the movable portion 4B through the upper mounting bracket 15B through a central opening 4Aa formed in the fixed portion 4A.

  Further, the other end of the auxiliary spring 12 whose one end is fixed to the fixed portion 4A of the seating portion 4 is connected to a mounting bracket 15C that protrudes from the central opening 4Aa and is attached to the movable portion 4B.

  When seated, the main damper means 11 operates so that the movable portion 4B slides relative to the fixed portion 4A in parallel with the fixed portion 4A, and the auxiliary spring 12 contracts by a certain amount to stabilize the seated person's posture. The base 2 and the seat 4 (fixed part 4A) are provided.

  In the central opening 4Aa of the fixed portion 4A, the landing wheel 13 is rotatably supported by the mounting bracket 15D on the lower surface side of the movable portion 4B, while the inclined surface 14a on which the landing wheel 13 rolls on the pedestal 2. Is provided along the front-rear direction. The inclined surface 14a of each slide base 14 is a flat surface, and the height decreases as it goes rearward (that is, as it moves away from the hinge 3). Here, the inclined surface 14a is provided when the landing wheel 13 is landed on the inclined surface 14a (slide table 14) when the inclination angle of the main damper means 11 is reduced by the sinking of the seating portion 4. In order to avoid sudden sinking, not only the case where the height is lowered toward the rear but also the case where the height is lowered toward the front is included.

  One end portion of a support arm 16 (support member) is rotatably connected to each side portion of the movable portion 4B of the seating portion 4 via a support bracket 18, and is provided rotatably on the other end portion of the support arm 16. The roller 17 thus formed is movably coupled to a long hole portion 2Aa formed in the vertical side plate portion 2A of the base 2.

  With this configuration, the seat 21 absorbs the load (weight) received by the movable part 4B of the seating part 4 by the main damper means 11 connecting the movable part 4B and the base 2, and further allows the seating part 4 to move. A function of assisting the parallel movement of the portion 4B with respect to the fixed portion 4A by the auxiliary spring 12 is provided.

Next, a seating operation on the seat 21 will be described.
(i) Standby position Although the standby angle of the seating part 4 can be changed, in this embodiment, it is a fixed angle (for example, 40 °). This state is maintained until the seated person is seated.
(ii) Initial operation When a seated person who is going to sit down places his buttocks on the movable part 4B of the seating part 4 to which the cushions 23 are attached, the fixed part 4A and the movable part 4B of the seating part 4 as shown in FIG. Since the slide mechanism 5 (slide rail) is provided between the movable portion 4B and the movable portion 4B, the movable portion 4B is slidable in parallel with the fixed portion 4A with respect to the fixed portion 4A. Moves diagonally downward along the surface of the fixed portion 4A.

  By this initial operation, the inclination angle of the seating portion 4 is changed so as to be slightly reduced, and the position of the waist of the seated person is changed to a low position as shown in FIG. 7, so that the seated person can easily drop his buttocks. However, by dropping the buttocks, it becomes easy to make the main damper means 11 act on the weight of the seated person via the seating portion 4, and the main damper means 11 can be contracted smoothly while obtaining a buffering effect. .

Here, without the slide mechanism 5, if the weight of the seated person is 60 kg or more, the weight of the seated person can be applied to the main damper means 11 via the seating part 4, and the seating part 4 can be pressed down well. If the weight of the seated person is in the 40 kg range, it is difficult to hold down the seating part 4 at the same standby position as that of the person with the weight of 60 kg or more. Move to a position where you can
(iii) Mid-board operation Following the initial operation, the contraction (compression) of the main damper means 11 proceeds gradually. At this time, the compression amount of the auxiliary spring 12 is maintained.
(iv) Final folding position As the compression of the main damper means 11 proceeds and the seat portion 4 sinks, the landing wheel 13 slides and moves on the inclined surface 14a of the slide base 14 as shown in FIG. With the restoring force of 12, the movable part 4B of the seating part 4 is pushed back to the normal position at the final position of the seating. The landing wheel 13 stops in the middle of the slide 14 and does not move, and the seating portion 4 maintains a stable posture at the final folding position.

  In this way, the seating portion 4 overcomes the large resistance of the main damper means 11 and is smoothly folded, thereby realizing a smooth seating operation.

  When the occupant stands, the main damper means 11, the auxiliary spring 12, and the repulsive force simultaneously push up the occupant 4 by lifting the hips so that the occupant stands up, so that the occupant 4 is seated through the cushion 23. The person's buttocks is pushed to assist the seated person in standing up (standing up).

  Further, the left and right vertical side plate portions 2A of the base 2 and the left and right side portions of the seating portion 4 are connected via a pair of left and right support arms 16, and the lower end portion (roller 17) of the support arm 16 connects the long hole portion 2Aa. Since the sliding movement is performed, the inclination angle of the seating portion 4 can be changed smoothly and stably.

  Here, the support arm is provided by sandwiching an adjustment member that changes the position of the start end and the end of the sliding movement of the lower end (roller 17) of the support arm 16 between the start end and the end of the long hole 2Aa of the side plate 2A. The movable range of the lower end portion (roller 17) of 16 can be changed, and the range in which the inclination angle of the seating portion 4 changes can be adjusted. Therefore, by adjusting the standby position (standby angle) and the final folding position (final folding angle), the standby angle of the seating section 4 can be made shallower, the final folding angle can be made deeper, etc. The movable range (tilt angle) can be freely changed.

  The seat 21 has the following advantages.

  (i) The standing assist device 1 can be used as the stool 21 having the standing assist device 1 by simply placing it on a plurality of stool frames arranged side by side in a public place. It is easy to replace the seat with the seat support device according to the present invention.

  (ii) In the initial seating operation, the movable portion 4B first moves obliquely downward by the action of the slide mechanism 5 between the fixed portion 4A and the movable portion 4B of the seat portion 4, so that a passenger with a light weight ( Even in the 40 kg range, the large resistance of the main damper means 11 can be overcome, and the movable part 4B having the cushion 23 can smoothly sink to the seating position.

  (iii) Since the landing wheel 13 rotatably supported by the movable part rolls on the inclined surface of the slide base 14 provided on the pedestal 2, the landing wheel abruptly It is avoided that the seating part descends and is guided to descend gradually.

  Further, the seating portion includes a support member that is rotatably connected to each side portion of the seating portion, and the other end portion is movably and rotatably coupled to the long hole portion of the base 2. 4, the support by the base 2 is stabilized.

  (iv) Since the main damper means 11 and the auxiliary spring 12 act at the same time when standing up, even a heavy passenger (80 kg level) can exert a reliable starting-up action. Therefore, the standing support of the same quality is exhibited regardless of the weight (from 40 kg level to 80 kg level) in the seat of the railway vehicle used by the unspecified majority. In this way, the seated person can obtain a standing assistance force of about 10 kg to 15 kg when standing up. Here, the standing assist force means a force (load) in a direction perpendicular to the seat surface.

  In other words, even if the weight of the seated person changes, if the weight of the seated person is within a range that has a difference of about twice (for example, a range from 40 kg to 80 kg), a certain standing assistance force (for example, 10 to 15 kg) ) Can be assisted at the time of standing up, and similarly, assisting force can be obtained at the time of sitting, so that the user can sit safely.

  (v) Since the main damper means 11 is connected to the pedestal 2 and the seat portion 4 so as to operate when the auxiliary spring 12 contracts by a certain amount at the time of sitting, the elastic spring force by the auxiliary spring 12; By using the biasing effect and the buffering effect of the main damper means 11, the standing motion can be assisted without impairing the standing motion of the seated person.

  (vi) By installing a handrail (armrest part) and using it, it is possible to receive a safer stand-up operation.

  Thus, according to the seat 21, the combination of the main damper means 11 having both the biasing action and the buffering action, the auxiliary spring 12 that exerts the elastic spring force, and the slide mechanism 5 that changes the standby position, Without complicating the structure, it is possible to assist a seated person in sitting and standing up, and the versatility is enhanced.

  In addition to the embodiment described above, the present invention can be implemented with the following modifications.

  (i) The armrest portions 25 are provided on both the left and right sides of the seating portion 4, but a partition plate portion (the upper portion functions as an armrest portion) can be provided instead of such an armrest portion. Since the partition plates are arranged on the left and right sides of the seating part, the space between the seating part and the other mechanism part is concealed, it looks better, and the hand of the seated person becomes a movable part of the mechanism. Touching is definitely avoided.

  (ii) Further, as shown in FIG. 9, a plurality of stool 21A are arranged side by side, and the armrest 25A is arranged so that a seated person on either the left or right stool 21A can use the armrest 25A. It is also possible to form the tip portion so as to be divided into two. Specifically, the armrest portion 25A has a first base portion 25Aa projecting so as to extend in the horizontal direction from between the seats 21A, and the separation interval gradually spreads from the tip of the first base portion and then gradually narrows. Left and right bent branch portions 25Ab and 25Ac, and second base portions 25Ad extending in the vertical direction by joining the ends of the left and right bent branch portions 25Ab and 25Ac whose intervals are gradually narrowed. Reference numeral 25B denotes an armrest bent in an L shape.

  As a result, it is not necessary to share the armrest part with the adjacent seated person, and it is not necessary to give up the armrest part with the adjacent seated person, so that a person sitting on either the left or right seat 21A of the armrest part 25A stands up at the same time. (Sitting) can be. This structure is advantageous for use in public places.

  (iii) In the above embodiment, as a part of a plurality of stools arranged side by side in a public place, it is used for one or a plurality of stools arranged at the end of the stool, but the present invention is not limited thereto. Without limitation, it can be used. Specifically, for example, a stool according to the present invention can be installed on a stool for a vulnerable person in public transportation such as a railway vehicle or a bus (for example, a priority seat (sometimes referred to as a silver seat)). Specifically, as shown in FIG. 9, it can be arranged at the end of a long seat 27 (refer to a so-called long seat two-dot chain line in FIG. 9) along the longitudinal direction of the body of public transportation.

  (iv) The scope of the Organization's stool is not limited to public transportation, but can be applied to a single stool such as various hospitals, nursing homes, nursing homes, etc. .

DESCRIPTION OF SYMBOLS 1 Seat upright assistance device 2 Base 2A Side plate part 2Aa Long hole part 3 Hinge 4 Seating part 4A Fixed part 4Aa Center opening 4B Movable part 5 Slide mechanism 11 Main damper means 12 Auxiliary spring 13 Landing wheel 14 Slide base 14a Inclined surface 15A Below Side mounting bracket 15B Upper mounting bracket 15C Mounting bracket 15D Mounting bracket 16 Support arm 17 Roller 18 Support bracket 21, 21A Seat 22 Fixing base 23 Seat cushion 24 Backrest 25, 25A, 25B Armrest 25Aa First base 25Ab, 25Ac Bent branch 25Ad 2nd base 26 Seated person 27 Seat

Claims (7)

A sitting upright assisting device in which a seating portion is rotatably provided via a hinge fixed to a front end portion of a pedestal,
The seating portion includes a fixed portion coupled to the pedestal via the hinge, and a movable portion supported by the fixed portion so as to be movable in the vertical direction parallel to the fixed portion via a slide mechanism. ,
Wherein the load which the movable part receives the seat absorbs the main damper means connecting said pedestal and said movable part has both a buffer action and biasing action, further to the movable portion of the seat of the fixed part It has a function to assist parallel movement with an auxiliary spring .
At the time of sitting, first, the movable part moves obliquely downward along the surface of the fixed part while compressing the auxiliary spring, and then the main damper means is contracted, and then the main damper means is contracted. The movable portion of the seating portion is pushed back to the normal position by the restoring force of the auxiliary spring while the head is moving, and the repulsive force of the main damper means and the auxiliary spring simultaneously pushes up the seating portion when standing up. A sitting upright assisting device characterized by being configured .   The seating stand assisting device according to claim 1, wherein a landing wheel is rotatably supported by the movable portion, and a slide base having an inclined surface on which the landing wheel rolls is provided on the base. One end portion is rotatably connected to each side portion of the movable portion of the seating portion, and the other end portion is movably and rotatably coupled to a long hole portion formed in the side plate portion of the pedestal. The seating stand assisting device according to claim 1 or 2, further comprising a member.   The seating support assisting device according to any one of claims 1 to 3, further comprising a partition plate portion or an armrest portion disposed on both left and right sides of the seating portion. When a plurality of the seats are arranged side by side,
5. The standing of the seat according to claim 4, wherein the armrest portion disposed between the seatrests is divided into two parts so that a seated person on either the left or right of the armrest portion can use the armrest portion. Auxiliary device.   The stool stand-up assisting device according to any one of claims 1 to 5, which is used for one or a plurality of stools disposed on the stool as a part of a plurality of stools disposed side by side in a public place. The seating stand assisting device according to claim 6, wherein the public place is a guest room of a railway vehicle as public transportation.