JP3600758B2 - Seating device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair suitable for use by a person with reduced muscle strength in the legs and hips.
[0002]
[Prior art]
It is not easy for a user with weak muscular strength in the legs and hips to sit on or stand on the seat body of the chair, and assistance from an assistant may be necessary. However, it is not easy for the caregiver to raise or sit down the user who has weak muscles in the legs and hips, and it is desired to reduce the burden on the caregiver.
[0003]
Generally, a chair has a seat for a user to sit down. This seat is usually provided horizontally on the leg. For this reason, when the user sits on the seat, the user must lower the buttocks deeply to the height of the seat, and the operation places a heavy burden on the legs and hips.
[0004]
In addition, when the user stands up, the user must lift the buttocks that have been lowered deeply into the seat body, and must extend the legs from the bent state, which places a greater burden than when sitting.
[0005]
In order to reduce the burden on an assistant when a user sits on a chair or stands up, a chair disclosed in Japanese Utility Model Publication No. 61-3401 has been proposed. In this chair, a seat body is rotatably provided with the front end side as a fulcrum, and the seat body is urged by a spring in a direction in which the rear end side ascends with the front end side as a fulcrum.
[0006]
The seat body can be held in a substantially horizontal state against the urging force of the spring. Therefore, when the user sits down, the holding state of the seat body is released, and the seat body is inclined by the biasing force of the spring. Thereby, the user can lower the buttocks slightly to hit the seat body, so that the user can sit relatively easily, and when standing up, the buttocks are pushed up by the seat body urged in the upward direction. Therefore, in this case, it is possible to stand up relatively easily.
[0007]
[Problems to be solved by the invention]
By the way, in the chair having the above configuration, the seat body is urged in the rising direction by the urging force of the spring. Therefore, in order for the user to be able to stand up relatively easily, the urging force of the spring must be increased to strongly push the buttocks of the user. In addition, even when the user sits, the urging force of the spring must be sufficiently increased to ensure that the user's buttocks can be received.
[0008]
However, if the urging force of the spring is increased, the user must strongly press the seat body against the urging force of the spring with the buttocks when sitting down. Can be a burden.
[0009]
Further, when the holding state of the seat body is released when the user stands up, the buttocks of the user are strongly pushed by the seat body in accordance with the biasing force of the spring, so in the case of a user with weak legs and hips, In some cases, stability when standing up due to swaying of the legs and legs may be reduced.
[0010]
It is an object of the present invention to provide a seating device that allows a user to sit and stand up relatively easily without strongly urging a seat body upward in a rising direction.
[0011]
[Means for Solving the Problems]
The invention according to claim 1 includes a support,
A seat body rotatably attached to the support,
A mounting portion provided on at least one side of both sides in the width direction of the support,
An armrest body whose middle part is rotatably mounted to this mounting part,
The rear end of the seat body is connected to the rear end of the seat body from the rotation fulcrum and the rear end of the armrest body, and the armrest body is rotated forward with the midway portion as a fulcrum, so that the seat body is at the rear end. A seating device comprising an interlocking member for rotating the part in a rising direction.
[0012]
The invention according to claim 2 is the seating device according to claim 1, wherein the seat body is urged by a spring in a rotating direction in which a rear end of the seat body rises.
[0013]
The invention according to claim 3 is the seating device according to claim 1 , wherein the support and the seat are connected by a stopper ring that limits a rotation angle of the seat.
[0014]
The invention according to claim 4 is the seating device according to claim 1, wherein the support is a leg having a backrest body at a rear end side.
[0015]
The invention according to claim 5 is the seating device according to claim 1, wherein the attachment portion is configured to be detachably provided on the support.
[0016]
The invention according to claim 6 is the seating device according to claim 1, wherein an opening is formed in the seat body.
[0017]
The invention according to claim 7 is the seating device according to claim 6, wherein the support is provided with a mounting portion below the opening of the seat body.
[0018]
With such a configuration, when the user stands up, the armrest is rotated by adding weight to the armrest, or the assistant is rotated to rotate the seat in the standing direction in conjunction with the armrest. If the buttocks hit the seat when sitting, the armrest that has turned forward is gradually turned in the falling direction, so that the seat can also be turned slowly in the falling direction. . Therefore, it is possible to relatively easily sit and stand up without strongly urging the seat body in the rising direction by the spring, so that a large burden is not placed on the caregiver.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
FIGS. 1 to 3 show a first embodiment of the present invention, and FIG. 1 is a perspective view showing an overall configuration of a chair. The chair has a leg 1 as a support. The leg 1 has a pair of side members 1a. In the side member 1a, a front leg 3 is formed at the front end of the seat support portion 2 and a rear leg 4 is formed substantially vertically downward at the rear end of the seat support portion 2 by using wood, synthetic resin or the like. At the rear end of the seat support 3, a back support 5 is formed upward.
[0021]
The pair of side members 1a are arranged in parallel at a predetermined interval, and the rear ends of the seat support portions 2 are connected by a rear connecting member 6a shown in FIG. 1, and the front ends are connected by a front connecting member 6b shown in FIG. Are linked. The front connecting member 6b is made of steel bar, and one end and the other end of a band-shaped member 7a provided on the inner surface of the one seat support portion 2 and an angle member 7b provided on the inner surface of the other seat support portion 2 respectively. It is rotatably connected.
[0022]
At the rear of the seat support 2, an attachment 8 is formed. The mounting portion 8 is formed by a horizontal member 8a and a vertical member 8b that form a rectangular frame with the back support portion 5 and the seat support portion 2.
[0023]
As shown in FIG. 3, a U-shaped connecting portion 10 provided on a lower surface of a middle part of the armrest 9 at each of the distal ends of the horizontal members 8 a of the pair of mounting portions 8 is rotatable by a support shaft 11. Are linked. The distal end of the armrest 9 is formed in a bent portion 9a that is bent upward.
[0024]
A backrest body 12A is provided on the pair of back support portions 5 so as to be slightly inclined rearward, and a seat body 12B is provided between the pair of seat support portions 3 in a direction in which a rear end portion rises with the front end portion as a fulcrum. It is provided rotatably.
[0025]
That is, the seat body 12B includes a seat plate 13 and a cushion portion 14 provided on the upper surface of the seat plate 13 as shown by a chain line in FIG. On the lower surface of the seat plate 13, a first U-shaped member 15 and a second U-shaped member each having one end fixed to one end and the other end in the axial direction of the front connection member 6b, respectively. 16 are provided. Locking grooves 15a and 16a are formed on the upper surfaces of the other ends of the U-shaped members 15 and 16 along the width direction.
[0026]
An intermediate portion of an interlocking member 17 formed by bending a bar into a substantially U-shape is rotatably engaged with each of the locking grooves 15a and 16a. The seat plate 13 is attached and fixed to upper surfaces of the pair of U-shaped members 15 and 16. Thereby, the middle part of the interlocking member 17 is held by the seat plate 13 so as not to come off from the locking grooves 15a and 16a. That is, the interlocking member 17 is provided integrally with the seat body 12B in a rotatable state.
[0027]
The distal ends on both sides of the interlocking member 17 are bent into L-shaped engaging portions 19 outward in the width direction. The engaging portion 19 is rotatably connected to the inner surface of the rear end of the armrest body 9. Thereby, the seat body 12B can be linked to the rotation about the middle part of the armrest body 9 as a fulcrum.
[0028]
A coil-shaped spring 21 is mounted on the front connecting member 6b that rotatably supports the front end of the seat body 12B at the end on the second U-shaped member 16 side. One end of the spring 21 is engaged with the second U-shaped member 16, and the other end is engaged with the angle member 7b. The spring 21 urges the seat body 12B in the upright direction in which the rear end rises.
[0029]
As shown in FIGS. 2 and 3, one end of a first stopper link 22 is pivotally attached to a side surface of the second U-shaped member 16, and a second stopper is attached to a vertical side wall of the angle member 7b. One end of the link 23 is pivoted. The other ends of the first stopper link 22 and the second stopper link 23 are rotatably connected. Further, a locking piece 24 is formed at the other end of the first stopper link 22 to engage with the other end of the second stopper link 23 to limit the rotation angle of the stopper link 23.
[0030]
When the seat body 12B is in a substantially horizontal state, the first stopper link 22 and the second stopper link 23 are bent in a substantially V shape as shown in FIG. When the seat body 12B rotates in the rising direction in which the rear end rises with the front end as a fulcrum, the bent first and second links 22, 23 extend.
[0031]
When the seat body 12B stands up to a predetermined angle and these links 22 and 23 extend in a V-shape as shown in FIG. 2, the other end of the second stopper link 23 becomes the first end. Is engaged with a locking piece 24 formed at the other end of the stopper link 22 to limit the rotation of the seat body 12B in the rising direction.
[0032]
That is, the pair of stopper links 22 and 23 prevent the seat body 12B from rotating in the upright direction at a predetermined angle, for example, about 45 degrees or more. Thus, when the user stands up, the seat body 12B prevents the buttocks of the user from being pushed forward too much, and the armrest 9 is prevented from pivoting too far and the user's hand from coming off the armrest 9. . Further, when the user sits down, it is possible to prevent the seat body 12B from being too upright and difficult to sit down.
[0033]
Further, since the pair of stopper links 22 and 23 are bent in a V-shape and do not extend any further, when the seat body 12A standing upright at a predetermined angle is rotated in the falling direction, the pair of stopper links 22 and 23 are bent. Is reliably rotated in the bending direction.
[0034]
Next, a case where the chair having the above configuration is used will be described.
[0035]
When the user is not sitting on the chair, the seat body 12B is in an upright state in which the rear end is raised by the urging force of the spring 21 as shown in FIG. At this time, since the armrest body 9 also rotates in conjunction with the armrest body 9, the armrest body 9 is inclined forward.
[0036]
As described above, when the user sits on the seat body 12 </ b> B that has been turned upright, the user puts his hand on the bent portion 9 a of the armrest body 9, lowers the buttocks and touches the seat body 12 </ b> B. In this state, when the force applied to the armrest 9 is gradually reduced, the seat 12B rotates together with the armrest 9 in the falling direction.
[0037]
Therefore, the user can adjust the rotation speed of the armrest body 9 by adjusting the force applied to the armrest body 9 regardless of the magnitude of the urging force of the spring 21 that urges the seat body 12B in the upright direction. Since the buttocks can be dropped while gently rotating the body 12B in the falling direction, it is possible to sit down while securely maintaining the state where the buttocks are supported by the seat body 12B.
[0038]
That is, the user can sit down while slowly descending the buttocks. In this case, if the user cannot increase or decrease the force applied to the armrest body 9, the assistant can perform the operation instead, so that the user can be seated relatively easily.
[0039]
When the user in the seated state stands up, the user or the assistant puts his hand on the front end of the armrest 9 and stands up while rotating the armrest 9 in the upright direction. When the armrest 9 is rotated, the seat 12 </ b> B interlocks with the rotation via the interlocking member 17.
[0040]
Therefore, the user can stand up without imposing a heavy load on his / her legs because the buttocks are pushed up by the seat body 12B. Also in this case, the seat body 12B can be surely rotated in the upright direction by the armrest body 9 regardless of the strength of the biasing force of the spring 21, so that it is possible to reliably assist the user to get up from the chair. it can.
[0041]
That is, since the rotation of the seat body 12B and the armrest body 9 are interlocked, even if the urging force of the spring 21 for urging the seat body 12B in the upright direction is weak, the seat body 12B does not By receiving the user's buttocks, it is possible to prevent the user from suddenly turning in the falling direction, and the user's buttocks can be reliably pushed up by the seat body 12B when standing up.
[0042]
By weakening the urging force of the spring 21, the force of the seat body 12B rotating in the upward direction at the time of sitting can be weakened, so that the seated user's buttocks are less likely to be pressed by the seat body 12B. be able to.
[0043]
The distal end of the armrest 9 was formed as a bent portion 9a bent upward. For this reason, when the user sits on the tip of the armrest 9 and sits down or stands up, the hand on the tip of the armrest 9 is hard to slip, and the rotation of the seat 12B is controlled by the armrest. 9 enables reliable operation.
[0044]
Furthermore, since the angle of rotation of the seat body 12B in the upright direction is limited by the first and second stopper links 22 and 23, the seat body 12B does not rotate excessively and it becomes difficult to seat. . In addition, the first and second stopper links 22 and 23 are prevented from rotating when the seat body 12B is extended in a U-shape and are not extended any further. , 24 can be reliably bent in a V-shape.
[0045]
Next, another embodiment of the present invention will be described. Note that the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0046]
FIG. 4 shows a second embodiment of the present invention. In this embodiment, the armrest 9 is provided only on one side in the width direction of the seat 12B. According to such a configuration, there is no armrest 9 on the other side of the seat 12B. When the user sits or stands up, the helper becomes easier to assist. Further, when the user sitting on the seat body 12B is moved to a bathtub or a bed, the work becomes easy.
[0047]
FIG. 5 shows a third embodiment of the present invention. This embodiment has substantially the same configuration as the first embodiment, but differs in that the leg 1 is not provided with the backrest body 12A.
[0048]
FIG. 6 shows a fourth embodiment of the present invention, which is substantially the same as the second embodiment, except that the pair of side members 1a of the leg 1 is formed of a pipe material. The difference is that the back support portion 5 is eliminated because the point and the backrest body 12A are not provided.
[0049]
FIG. 7 shows a fifth embodiment of the present invention. This embodiment is different from the fifth embodiment in the structure in which the seat body 12B is rotatably provided. That is, one member supporting one end of the front connecting member 6b is changed from the angle member 7b to the U-shaped member 7c. One end of the first link 31 is connected to one end of the front connection member 6b. A first roller 32 is rotatably provided at the other end of the first link 31. The first roller 32 is a U-shaped guide member provided on the lower surface of the rear end of the seat body 12B. 33 so as to be able to roll.
[0050]
A middle portion of the second link 34 is pivotally connected to a middle portion of the first link 31 by a pin 35. A second roller 36 is rotatably provided at one end of the second link 34, and the second roller 36 is rotatably engaged with the U-shaped member 7c. Further, the other end of the second link 34 is pivotally connected by a pin 38 to a connecting piece 37 provided at the front end of the lower surface of the seat body 12B.
[0051]
A spring 21 is mounted on the front connection member 6b, and the spring 21 urges the first link in the upright direction.
[0052]
According to such a configuration, the trajectory of the rotation of the seat body 12 </ b> B interlocked with the rotation of the armrest body 9 is set by the undulations of the first and second links 31 and 34. That is, when the seat body 12B rotates in the upright direction, when the first link 31 rotates about the front connecting member 6b as a fulcrum, the second link 34 is connected to the second roller 36 by the U-shaped member 7c. Is rotated in the upright direction while rolling forward.
[0053]
Therefore, since the seat body 12B rises while moving forward in conjunction with the second link 34, when the user stands up by the movement of the seat body 12B, the buttocks are pushed forward. From, it becomes easy to stand up.
[0054]
8 and 9 show a sixth embodiment of the present invention. The seating device of this embodiment is different in that a frame 41 is used as a support instead of the leg 1 of the first embodiment.
[0055]
By using the frame 41 as a support, this seating device can be used by being placed on a seat 43 of another chair 42 as shown in FIG. In addition, although not shown, it is also possible to use it by placing it on a seat of a wheelchair instead of the chair 42, or to use it like a chair.
[0056]
In the sixth embodiment, the backrest body 12A may or may not be provided.
[0057]
10 to 12 show a seventh embodiment of the present invention. This embodiment is different from the first embodiment in the shape of the seat body 12B. That is, the seat body 120B of this embodiment has a horseshoe shape having the opening 50.
[0058]
The leg body 10A provided with the seat body 120B has a pair of side members 51 obtained by bending a pipe material into a mountain shape, and these side members 51 have front and rear end sides as shown in FIG. Are connected by a pair of connecting members (only one is shown) 52 formed by bending a pipe material into an inverted mountain shape.
[0059]
The connecting member 52 is provided with a mounting member 53 in which a plate material is positively formed in the same inverted mountain shape as the connecting member 52. At the upper ends on both sides of the mounting member 53, bent portions 54 bent horizontally are formed, and each bent portion 54 is provided with a U-shaped mounting member 55, respectively.
[0060]
Inverted U-shaped receiving members 56 are provided on lower surfaces on both sides of the seat body 120B. The receiving member 56 enters the inside of the mounting member 55 as shown in FIG. 12, and their front ends are rotatably connected by a connecting shaft 57. The connecting shaft 57 is provided with the spring 21 for urging the receiving member 56, that is, the seat body 120B in the upright direction.
[0061]
A rod member 58 constituting an attachment portion is provided upright on the side member 51, and a connecting portion 10 provided at an intermediate portion of the armrest 9 is pivotally attached to an upper end of the rod member 58 by a support shaft 11. .
[0062]
A locking groove 56a is formed on the upper surface of the rear end of the receiving member 56. The lower end of the interlocking member 17a is engaged with the locking groove 56a of each receiving member 56, and the engagement state is established by the lower surface of the seat body 120B. Is held. The other end of each interlocking member 17a is engaged with the rear end of each armrest body 9.
[0063]
That is, in this embodiment, the connecting shaft 57 and the interlocking member 17a are each divided into two. Thus, even if the opening 51 is formed in the seat body 120B, the connecting shaft 57 and the interlocking member 17a are not exposed from the opening 51.
[0064]
An intermediate portion of the placing member 53 is a horizontal placing portion 53a, on which a toilet 58 can be placed as shown by a chain line in FIG. Further, a large number of through holes 59 are formed in the mounting portion 53a.
[0065]
According to such a configuration, as in the above-described embodiments, the seat body 120B interlocks with the rotation of the armrest body 9 via the interlocking member 17a. Further, since the opening 51 is formed in the seat body 120B, and the placing portion 53a is provided below the opening, the user places the toilet bowl 58 on the placing portion 53a, so that the user can sit down. It is possible to excrete in a posture sitting on the body 120B. Further, by placing the seating device in the bathroom, the user can wash the buttocks facing the opening 51 of the seat body 120B while sitting.
[0066]
In the above embodiments, the seat members 12B and 120B are urged in the rising direction by the spring 21. However, the seat members 12B and 120B need not be urged by the spring 21. , 120B need only rotate in the upright direction. That is, when the spring 21 is not provided, if the armrest body 9 is rotated forward when standing, the seat portions 12B and 120B can be rotated in the rising direction. It can be used in a manner similar to the case where the spring 21 is provided at the time of sitting.
[0067]
In addition, the seat body 12B is rotatably provided by attaching the front end to the front connecting member 6b provided on the leg 1, but other parts such as the middle part in the front-rear direction other than the front end are provided as described above. You may make it attach to the front connection member 6b.
[0068]
【The invention's effect】
According to the first aspect of the present invention, the seat body and the armrest body are provided rotatably, and these rotations are interlocked by the interlocking member.
[0069]
Therefore, the user can gently rotate the armrest by a hand or an assistant who hangs on the armrest at the time of sitting and standing up. Thus, the user's buttocks can be reliably pushed up when standing up. In other words, even a user with weak legs and legs can relatively easily and reliably perform the operation of sitting and standing up, and thus can easily assist the user.
[0070]
According to the second aspect of the present invention, the seat body is urged in the upright direction by the spring.
[0071]
Therefore, when the user is not sitting on the seat, the seat can be rotated in the rising direction by the urging force of the spring. It does not need to be rotated.
[0072]
According to the third aspect of the present invention, a stopper ring is provided between the support body and the seat body for limiting a rotation angle of the seat body in a rising direction.
[0073]
For this reason, the armrest can be prevented from rotating more than necessary via the seat body, so that the armrest can be prevented from rotating excessively and the user's hand coming off the armrest.
[0074]
According to the fourth aspect of the present invention, since the support on which the seat is provided is a leg, it can be used as a chair.
[0075]
According to the fifth aspect of the present invention, since the mounting portion is detachably provided on the support, the seat that is interlocked with the rotation of the armrest is placed on the seat of another chair. You can use it.
[0076]
According to the sixth aspect of the present invention, since the opening is formed in the seat body, by providing the toilet below the opening, the user can excrete while sitting.
[0077]
According to the seventh aspect of the present invention, since the placing portion is provided below the opening, a toilet for discharging the user in a state where the user is seated on the placing portion can be reliably provided.
[Brief description of the drawings]
FIG. 1 is a perspective view of a chair according to a first embodiment of the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is a perspective view showing a connection structure between the seat body and the armrest body;
FIG. 4 is a perspective view of a portion of a seat body showing a second embodiment of the present invention.
FIG. 5 is a perspective view of a chair according to a third embodiment of the present invention.
FIG. 6 is a perspective view of a chair according to a fourth embodiment of the present invention.
FIG. 7 is a side view showing a mounting structure of a seat body according to a fifth embodiment of the present invention.
FIG. 8 is a perspective view of an overall configuration showing a sixth embodiment of the present invention.
FIG. 9 is a cross-sectional view showing a state where the seat body having the configuration shown in FIG. 8 is mounted on another support;
FIG. 10 is a perspective view of a chair according to a seventh embodiment of the present invention.
FIG. 11 is a longitudinal sectional view of the same.
FIG. 12 is an enlarged sectional view showing a mounting structure of the seat body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Leg 8 ... Attachment part 9 ... Armrest 12A ... Backrest 12B ... Seat 17 ... Interlocking member 21 ... Spring 22 ... First stopper link 23 ... Second stopper link

Claims (7)

A support,
A seat body rotatably attached to the support,
A mounting portion provided on at least one side of both sides in the width direction of the support,
An armrest body whose middle part is rotatably mounted to this mounting part,
The rear end of the seat body is connected to the rear end of the seat body from the rotation fulcrum and the rear end of the armrest body, and the armrest body is rotated forward with the midway portion as a fulcrum, so that the seat body is at the rear end. A seating device comprising: an interlocking member that rotates the part in a rising direction. 2. The seating device according to claim 1, wherein the seat body is urged by a spring in a rotating direction in which a rear end of the seat body rises. The seating device according to claim 1, wherein the support and the seat are connected by a stopper ring that limits a rotation angle of the seat. 2. The seating device according to claim 1, wherein the support is a leg having a backrest on a rear end side. The seating device according to claim 1, wherein the attachment portion is configured to be detachably provided on the support. The seating device according to claim 1, wherein an opening is formed in the seat body. The seating device according to claim 6, wherein a mounting portion is provided below the opening of the seat body on the support body.

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