JP3552696B2 - Armrest device for seats in chairs, etc. - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention, in addition to supporting a sitting posture, when moving a body, a chair or the like which can be moved so as to open a side surface of a seat portion of a chair or the like so as not to be obstructed, and can be removed in some cases. The present invention relates to an armrest device for a seat in the above.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, wheelchairs are indispensable equipment for the elderly, seriously ill patients, and persons with gait disorders, and are designed to be easy for most users to use.
The use of such a wheelchair almost always involves a transfer operation between a bed, a portable toilet, and other facilities such as a consultation table.
[0003]
[Problems to be solved by the invention]
At that time, if the armrest part near the seat touches the buttocks of the user and gets in the way, or if the user is serious, the caregiver must transfer the user from the wheelchair to the transfer destination with two people from the front and back In addition, the burden on both the user and the caregiver is severe.
The present invention has been proposed in order to improve such a problem, and in addition to supporting a sitting posture, when moving a body, a user moves to open a side surface of a seat in a chair or the like so as not to hinder. It is an object of the present invention to provide an armrest device for a seat in a chair or the like, which can be detached in some cases.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the present invention, in claim 1, a support member disposed along a side surface of a seat in a chair or the like, and an armrest member attached to the support member, wherein the support member is a base frame for supporting the seat, the lower end portion corresponding to the seat back in the support member, thereby pivotally restrained via the relay member, rotating detachable structure which is detachably mountable to the relay member while mounted through the support mechanism, the lower end portion corresponding to the seat front side of the supporting member, the locking mechanism provided at the lower end side is configured to be removably constrained to said base frame, this locking mechanism, said a seat front side lower portion of the supporting member is disengaged from the base frame, rotation of the said support member, rotating detachable supporting mechanism via the relay member to seat back lower end of the support member Te, while opening the seat side, by operating the rotating detachable support mechanisms if necessary to open the relay member at the lower end of the seat back in the support member, so removing said support member The present invention proposes an armrest device for a seat in a chair or the like.
Further, in the present invention, the rotation attaching / detaching support mechanism according to claim 2, wherein the receiving case provided with an insertion groove for rotatably supporting a relay member at a lower end of a back side of the seat of the support member is attached to the base frame. The present invention proposes an armrest device for a seat portion of a chair or the like provided with a detachable operation mechanism provided at a back end portion of the receiving case so that the relay member can be attached to and detached from the fitting groove of the receiving case .
Further, in the present invention, in claim 3, the attachment / detachment operation mechanism has a pin hole formed so as to be orthogonally communicated with a fitting groove in the receiving case, and a detachable pin is inserted into this pin hole to be supported in the fitting groove. The detachable pin is inserted into the insertion hole of the relay member by a coil spring to restrain the relay member, and the detachable pin is inserted into the receiving case against the urging force of the coil spring. An armrest device for a seat portion in a chair or the like provided with a detachable lever for holding a state of being retracted from an insertion hole is proposed .
Further, in the present invention, the lock mechanism according to claim 4, wherein the lock housing receives the seat front lower end portion of the support member via a conical shaft fixed to the front lower end portion. On the other hand, a lock pin that is held in a locking hole provided in the conical shaft through the lock housing and is always locked by a biasing means, and the lock pin is moved from the locking hole of the conical shaft to the biasing means. A release lever for engaging and disengaging the lock lever against the urging force, wherein the lock housing has a holding hole for receiving the conical shaft on an upper surface, and the release lever and the lock pin are configured such that the release lever is a lock pin. When operated in the direction perpendicular to the lock pin, the distal end of the lock pin protrudes toward the holding hole, while when the release lever is operated so as to be linear with the lock pin, the distal end of the lock pin is held From the hole Suggest armrest device of the seat portion in the chair or the like that is pivotally supported to movement.
According to the present invention, the present invention proposes an armrest device for a seat in a chair or the like in which the seat is a seat in a furniture chair .
Further, in the present invention, in claim 6, the armrest device for a seat in a chair or the like, in which the seat is a seat in a wheelchair , is proposed .
[0005]
According to the first aspect, the user can maintain a stable posture in the seat portion with the elbow support member attached to the support member arranged along the side surface as a support.
When moving from the seat to another location, to release by operating the locking mechanism the seat front lower end of the support member, to disengage the seat front side lower portion of the support member from the base frame Te, the support member, the seat back lower end of the support member is pivoted at the pivot removably supporting mechanism via the relay member so as to open the said seat side surface.
If necessary, the pivoting detachable support mechanism can be operated to open the relay member at the lower end of the support member on the back side of the seat, and remove the support member.
[0006]
According to the second aspect, the supporting member supporting the elbow rest member is a relay member at a lower end portion corresponding to the seat back side of the supporting member in the fitting groove of the receiving case provided at the back end of the base frame. The relay member can be detached from the fitting groove in the receiving case by an attaching / detaching operation mechanism.
[0007]
According to claim 3, in order to remove the support member from the base frame, the lower end of the support member corresponding to the seat front side is detached from the base frame , and the support member is removed from the back end of the base frame. The detachable pin inserted in the insertion hole of the relay member supported in the insertion groove of the receiving case is attached and detached by operating the detachment lever to retreat from the insertion hole of the relay member against the biasing force of the coil spring. The lever can be maintained in that position and the armrest device can be easily removed by lifting the support member .
[0008]
According to claim 4, when opening the lower end portion corresponding to the seat front side of the support member from the base frame, and engineered to be a straight line the release lever against the lock pin, the front lock pin It is disengaged from the locking hole at the side end against the urging force of the urging means.
[0009]
According to claim 5, the user when moving from a chair, to release by operating the locking mechanism the lower end portion corresponding to the seat front side of the supporting member side, moving the support member with Hijito member And open the chair seat side.
[0010]
According to claim 6, the user when moving from a wheelchair, to release by operating the locking mechanism the lower end portion corresponding to the seat front side of the supporting member side, the inclination displacement of the supporting member with Hijito member Then, open the chair seat side.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an armrest device for a seat in a chair or the like according to the present invention will be described below with reference to the accompanying drawings while showing one embodiment of a wheelchair.
FIG. 1 shows a wheelchair 1, which is provided with an armrest device 2 on a side surface of a seat.
In this wheelchair 1, a front frame 3 having a front wheel 3, a base frame 5 equipped with a rear wheel 4 having a diameter larger than that of the front wheel 3, and a foot frame 7 holding the footrest 6 projecting forward from the front wheel 3 on the base frame 5. And a back frame 8 extending above the rear wheel 4 from the base frame 5, a handle portion 9 connected to the back frame 8, and a portion of the base frame 5 from the vicinity of the back frame 8 mounting portion to the foot frame 7 mounting portion. The armrest device 2 is arranged on both sides of the seat.
[0012]
As shown in FIG. 2, the armrest device 2 includes a support member 10 disposed on the base frame 5 from the vicinity of the attachment point of the back frame 8 to the attachment point of the foot frame 7, and an elbow attached to the support member 10. The supporting member 10 pivotally supports an end of the base frame 5 on the side of the back frame 8 via a rotary attachment / detachment support mechanism 12, and an end of the base frame 5 on the side where the foot frame 7 is attached. Are removably supported via a lock mechanism 13.
[0013]
Here, the support member 10 is formed in a substantially U-shape by bending both ends using a pipe material, and is provided between the guard panel 14 and the support member 10 held between the vicinity of both ends. From the holding body 15 to the center of the guard panel 14, the elbow support member 11 is supported via a column 16 by a height adjustment mechanism 17 so that the height can be adjusted. The support member 10 is not limited to a pipe material, but may be a rod-shaped member formed into the U-shape. Further, the entire panel may be used without using the guard panel.
[0014]
The elbow rest member 11 is made of a well-known synthetic resin molded body. Although not described in detail, the elbow rest member 11 is provided so that the user can easily grip the front end of the wheelchair 1 facing the front side, that is, the foot frame 7 attachment point side. Molding.
[0015]
Next, as described above, the rotation attaching / detaching support mechanism 12 is provided at the end of the base frame 5 near the back frame 8, but the lower end of the support member 10 located on the back frame 8 side The relay member 18 is axially fixed to E1, and the relay member 18 is detachably supported by a detachment operation mechanism 20 in a receiving case 19 attached to the end of the base frame 5 (see FIG. 4). .
The attachment / detachment operation mechanism 20 has a fitting groove 21 for receiving the relay member 18 in the receiving case 19, a pin hole 22 formed to be orthogonal to the fitting groove 21, and a detachable pin 23 in the pin hole 22. The detachable pin 23 is inserted into the insertion hole 18h of the relay member 18 inserted and supported in the insertion groove 21 by the coil spring 24 so as to restrain the relay member 18, and the detachable pin 23 is inserted into the receiving case 19. Is provided with a detachable lever 25 for retreating from the insertion hole 18h of the relay member 18 against the urging force of the coil spring 24.
[0016]
The locking mechanism 13 is fixed to the end of the base frame 5 on the side of the foot frame 7 attachment point, and the conical shaft 26 that fixes the front lower end E2 of the support member 10 to the front lower end E2. A lock housing 27 received through the lock housing 27, a lock pin 29 held by a biasing means (not shown) in the lock housing 27 in a locking hole 28 formed in the conical shaft 26 so as to be always locked, The pin 29 is constituted by a release lever 30 for engaging and disengaging the pin 29 from the locking hole 28 of the conical shaft 26 against the urging force of the urging means.
[0017]
The lock housing 27 has a holding hole 31 for receiving the conical shaft 26 on the upper surface, and a tip side of the lock pin 29 is approached toward the holding hole 31 by an urging means. The inner surface shape of the holding hole 31 corresponds to the conical shaft 26.
[0018]
The release lever 30 and the lock pin 29 are disengaged such that the distal end of the lock pin 29 projects toward the holding hole 31 when the release lever 30 is operated in a direction perpendicular to the lock pin 29. When the lever 30 is operated so as to be linear with respect to the lock pin 29, the distal end side of the lock pin 29 is pivotally supported so as to retreat from the holding hole 31.
[0019]
According to the armrest device 2 as described above, the user places the upper limb on the elbow rest member 11 supported by the support member 10 disposed along the side surface in the seat portion of the wheelchair 1, so that the elbow rest member 11 A stable posture can be maintained with the support.
[0020]
When moving from the seat of the wheelchair 1 to another place, the front lower end E2 of the support member 10 is released by operating the release lever 30 of the lock mechanism 13 (see FIG. 6), and the support The detachable pin inserted into the insertion hole 18h of the relay member 18 supported by the member 10 together with the elbow contact member 11 in the insertion groove 21 of the receiving case 19 at the end on the side of the back frame 8 by the coil spring 24 through the pin hole 22. Then, the seat 23 is tilted and displaced around the center so as to be flipped up, and the side surface of the seat is opened (see FIG. 2).
[0021]
If necessary, the detachable pin 23 inserted through the insertion hole 18h of the relay member 18 supported by the fitting groove 21 is operated by operating the detachable lever 25 (see FIG. 4) to resist the urging force of the coil spring 24. Then, the armrest device 2 can be detached from the side surface of the seat by retracting from the insertion hole 18h of the relay member 18 (see FIG. 2).
[0022]
As described above, the armrest device for the seat portion of the chair or the like according to the present invention has been described with reference to the armrest device 2 provided in the wheelchair 1. However, such an armrest device can, of course, be provided in a normal chair 40 (FIG. 7). reference).
In this case, when opening the side surface of the seat, the armrest device does not necessarily need to be of the type that jumps up to the backrest side to open. That is, although not described in detail, for example, a structure may be employed in which the relay member 18 is deployed and opened laterally around the center axis of the relay member 18 that supports the backrest side end of the support member 10 constituting the armrest device 2 (see FIG. 8). ).
[0023]
【The invention's effect】
According to the present invention,
(1) When moving from the seat to another place, the front lower end of the seat in the support member is released by operating a lock mechanism, and the front lower end of the seat is detached from the base frame; The operation is simple because the lower side of the back side of the seat portion of the support member is rotated by the rotation detachable support mechanism via the relay member to open the side surface of the seat portion. In addition, the relay member at the lower end on the back side of the seat portion of the support member can be opened, and the support member can be removed, if necessary, by operating the rotation detachable support mechanism .
(2) To remove the support member from the base frame, the operator only has to operate the rotation attachment / detachment support mechanism that holds the lower end of the support member via the relay member.
At this time, the detachable pin inserted through the insertion hole of the relay member supported by the insertion groove of the receiving case at the back end of the base frame, which is the rotation detachable support mechanism, is attached to the coil spring by operating the detachable lever. Against the force, the detachable lever can be maintained at that position in a state of being retracted from the insertion hole of the relay member, and the relay member can be made detachable from the fitting groove of the receiving case, so that the operator can simply Since the support member need only be lifted, it can be easily removed .
(3) The operation of opening and releasing the support member from the side of the seat and the operation of releasing the support member from the side surface of the seat member are easy and accidental by a single operator by the rotation and detachment support mechanism and the lock mechanism of the support member supporting the elbow rest member. And a safe and secure function that does not come off accidentally .
(4) When the armrest device is used in a normal chair, the front lower end of the support member on the side surface of the seat is released by operating the lock mechanism, and the support member is moved together with the elbow support member, so that the side surface of the chair seat is removed. Can be opened, and it is easy to move to another place .
(5) In the case where the armrest device is used for a wheelchair, when the user moves from the wheelchair, the user operates the lock mechanism to release the lower end on the front side of the side support member and releases the support member to the elbow rest member. In addition, by tilting and displacing the chair to open the side surface of the chair seat, it greatly assists the caregiver, and the user can easily use the wheelchair .
[0024]
[Brief description of the drawings]
FIG. 1 is a side view showing an example of a wheelchair using an armrest device according to the present invention.
FIG. 2 is an explanatory side view for explaining functions of the armrest device shown in FIG. 1;
FIG. 3 is an enlarged side view of a main part, showing a mounting configuration of the armrest device shown in FIG. 1;
FIG. 4 is an explanatory view of a main part showing a functional configuration of a rotation attaching / detaching support mechanism on a side closer to a back frame of the armrest device shown in FIG. 1;
FIG. 5 is a plan view of the rotation attaching / detaching support mechanism shown in FIG. 4;
6 is an external perspective view of a lock mechanism at an end of the armrest device shown in FIG. 1 on a side where a foot frame is attached.
FIG. 7 is a side view showing an example of a chair using the armrest device according to the present invention.
FIG. 8 is a perspective explanatory view showing another example of the chair using the armrest device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wheelchair 2 Armrest device 3 Front wheel 4 Rear wheel 5 Base frame 6 Footrest 7 Footframe 8 Back frame 9 Handle part 10 Support member 11 Elbow contact member 12 Rotational attachment / detachment support mechanism 13 Lock mechanism 14 Guard panel 15 Holder 16 Column 17 Height adjustment mechanism 18 Relay member 18h Insertion hole 19 Receiving case 20 Removable operation mechanism 21 Insertion groove 22 Pin hole 23 Removable pin 24 Coil spring 25 Removable lever 26 Conical shaft 27 Lock housing 28 Lock hole 29 Lock pin 30 Release lever 31 Holding hole 32 Chair
E 1 , E 2 lower end

Claims (6)

Comprising a support member disposed along the seat side face of a chair or the like, and elbows those members mounted on the support member, the support member, the base frame for supporting the seat, corresponding to the seat back of the support member the lower end portion which is, with pivotally restrained via the relay member, while mounting through the structure of the rotating detachable support mechanism for detachable the relay member, corresponding to the seat front side of the support member the lower end portions, a structure that removably constrained to said base frame by a lock mechanism provided at the lower end side, this locking mechanism, and a seat front side lower portion is detached from said base frame in said supporting member , the support member, the seat back lower end of the support member is pivoted at the pivot removably supporting mechanism via the relay member, while opening the seat side, the rotating detachable supported if necessary By operating the mechanism to open the relay member at the lower end of the seat back in the support member, the armrest device of the seat portion in the chair or the like, characterized in that it has to remove the support member. The rotation attachment / detachment support mechanism includes a receiving case provided with a fitting groove for rotatably supporting a relay member at a lower rear portion of the seat portion of the support member, at a rear end portion of the base frame. 2. The armrest device for a seat in a chair or the like according to claim 1 , further comprising a detachable operation mechanism for detachably attaching the member to the fitting groove in the receiving case . The attachment / detachment operation mechanism has a pin hole that is formed to communicate orthogonally with the insertion groove in the receiving case, and a coil spring is inserted into the insertion hole of the relay member supported in the insertion groove by inserting a detachable pin into this pin hole. The detachable pin is fitted to restrain the relay member, and the detachable pin is held in the receiving case in a state of being retracted from the insertion hole of the relay member against the urging force of the coil spring. The armrest device for a seat portion of a chair or the like according to claim 2, further comprising a detachable lever that performs the operation . The lock mechanism includes: a lock housing that receives a seat front lower end portion of the support member via a conical shaft fixed to the front lower end portion; and a locking hole provided in the conical shaft with respect to the conical shaft. A lock pin which is held through the lock housing by the urging means so as to be always locked by the urging means, and the lock pin is disengaged from the locking hole of the conical shaft against the urging force of the urging means. The lock housing has a holding hole for receiving the conical shaft on the upper surface, and the release lever and the lock pin are separated when the release lever is operated in a direction orthogonal to the lock pin. While the distal end side of the lock pin projects toward the holding hole, when the release lever is operated so as to be linear with the lock pin, the distal end side of the lock pin is pivotally supported so as to retreat from the holding hole. that is Armrest apparatus of the seat portion of the chair or the like according to claim 1, symptoms. The armrest device for a seat in a chair or the like according to any one of claims 1 to 4 , wherein the seat is a seat in a furniture chair . The armrest device for a seat in a chair or the like according to any one of claims 1 to 4, wherein the seat is a seat in a wheelchair .

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