JP3191527U - Arm holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an arm holder capable of stably holding an arm and not impairing the operability of a hand rim. An arm holder includes an arm rest 3 and a connecting member 4 capable of connecting the arm rest 3 to an armrest 15. The dimension of the armrest 3 in the longitudinal direction Z is smaller than that of the armrest 15, and the dimension of the flat portion in the lateral direction orthogonal to the longitudinal direction Z is larger than that of the armrest 15. The connecting member 4 includes a sliding mechanism 5 in which the armrest 3 moves in the longitudinal direction Z, and a rotating mechanism 6 in which the armrest 3 moves in the lateral direction. The sliding mechanism 5 is composed of a rod member 51 extending in the longitudinal direction Z along the armrest 15, a fixing member 52 for fixing the rod member 51 and the armrest 15, and a support member 53 for connecting the armrest 3 to the rod member 51. It is composed. The support member 53 is provided with a recess into which the rod member 51 can be inserted, and the recess moves along the rod member 51 so that the armrest 3 can slide in the longitudinal direction Z. [Selection diagram] Fig. 2

Description

  The present invention relates to an arm holder that can be attached to a wheelchair or the like, and more particularly to an arm holder that is easy to put on an arm and that does not hinder the operability of a hand rim.

  The wheelchair supports the user's body with a seat seat, a backrest, and the like, and has an armrest above the seat seat so that the arm can be placed while sitting. Conventionally, an armrest that can be separately attached to the armrest is known. The armrest is often larger than the armrest so that the arm rested can be stably held.

JP 2006-101936 A

The wheelchair is provided with a wheel and a hand rim for rotating the wheel on the laterally outer side of the seat and the armrest.
According to Patent Document 1, the armrest extends over substantially the entire longitudinal direction of the armrest of the wheelchair and protrudes in the lateral direction. In the case of such an armrest, the user's arm can be stably held, but there is a problem that the armrest gets in the way when an attempt is made to operate the hand rim.

  An object of the present invention is to provide an arm holder that can stably hold an arm and does not impair the operability of the hand rim.

  The present invention is an arm holder comprising an armrest attached to an armrest of a wheelchair and a connecting member that connects the armrest to the armrest, and the connecting member is capable of sliding the armrest along the armrest The armrest is smaller than a dimension in the longitudinal direction of the armrest, and the first position located on the distal end side of the armrest by the sliding mechanism, and the distal end portion And a second position located on the side of the proximal end located opposite to.

  The arm holder may further include a moving mechanism that moves the armrest in a vertical direction orthogonal to the longitudinal direction.

  According to the arm holder of the present invention, the armrest on which the forearm is placed is slidable along the longitudinal direction of the armrest of the wheelchair. Therefore, when moving the wheelchair by operating the hand rim, the armrest is located on the distal end side. By moving the armrest to the first position, the armrest does not hinder the operability of the hand rim. Further, when placing the forearm on the armrest, the armrest can be moved to a position where it can be easily placed, and the forearm can be stably held.

The schematic diagram when an arm holder is attached to a wheelchair. The partially expanded view of FIG. FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 2. Explanatory drawing of rotation of an armrest. (A) The same figure as FIG. 3 which shows other embodiment. (B) The figure which shows the state which the moving member of FIG. 5 (A) moved upwards.

  Referring to FIG. 1, the wheelchair 1 includes a seat seat 11, a backrest 12, a pair of wheels 13 positioned on both outer sides of the seat seat 11, a hand rim 14 that can manually rotate the wheels 13, and a backrest. And a pair of armrests 15 extending so as to protrude from 12. Such a wheelchair 1 has a longitudinal direction Z along the armrest 15 and an up-down direction Y orthogonal to the longitudinal direction Z. The armrest 15 has a proximal end portion 15 </ b> A located on the backrest 12 side and a distal end portion 15 </ b> B farthest from the backrest 12 on the opposite side. The arm holder 2 includes an armrest 3 on which at least a part of the user's forearm can be placed, and a connecting member 4 that can connect the armrest 3 to the armrest 15.

  FIG. 2 is an enlarged view of the armrest 3 portion of FIG. 1, and shows the armrest 3 in a state of moving in the longitudinal direction Z with phantom lines. Referring to FIGS. 2 and 3, the armrest 3 is opposed to the flat portion 31 extending in the longitudinal direction Z, a pair of wall portions 32 extending in the longitudinal direction Z and rising from both sides of the flat portion 31, and the flat portion 31. And a back surface 33. The dimension in the longitudinal direction Z of the armrest 3 is smaller than the dimension in the longitudinal direction Z of the armrest 15, and the dimension in the lateral direction X perpendicular to the longitudinal direction Z of the flat portion 31 is larger than that of the armrest 15. Such an armrest 3 has a rear end 3A located on the backrest 12 side and a front end 3B opposite to the longitudinal direction Z.

The connecting member 4 includes a sliding mechanism 5 in which the armrest 3 moves in the longitudinal direction Z with respect to the armrest 15 and a rotating mechanism 6 in which the armrest 3 rotates in the lateral direction X.
The sliding mechanism 5 includes a columnar bar member 51 extending in the longitudinal direction Z along the armrest 15, a fixing member 52 that fixes the bar member 51 and the armrest 15, and a support member 53 connected to the armrest 3. Composed. The armrest 15 and the bar member 51 are each fixed to the fixing member 52 by screws or the like. The support member 53 is provided with a recess 54 into which the bar member 51 can be inserted, and the recess 54 moves along the bar member 51. Since the armrest 3 is fixed to the support member 53 via the fastening member 55, the armrest 3 can slide with respect to the bar member 51.

  The fixed member 52 is provided with a stopper 56 to restrict the movement of the support member 53. The stoppers 56 are provided in the vicinity of the proximal end portion 15A and the distal end portion 15B, respectively, and prevent the armrest 3 from coming off the armrest 15 or colliding with the backrest 12 and the like, and the movement distance of the armrest 3 Is defined.

  By the sliding mechanism 5 as described above, the armrest 3 moves between the first position 34 located near the distal end 15B of the armrest 15 and the second position 35 located near the proximal end 15A. It is possible. The armrest 3 may be movable continuously or may be moved stepwise.

  Referring also to FIG. 4, the rotating mechanism 6 of the arm holder 2 is provided on the rotating plate 62 and a rotating plate 62 connected to the back surface 33 of the armrest 3 via a fastening member 61 such as a screw. It has a sliding hole 63 and a projection 64 that can slide in the sliding hole 63 and protrude from the back surface 33. In FIG. 4, the position of the armrest 3 rotated by an imaginary line is shown.

  The rotary plate 62 has a lower surface 62A positioned below the vertical direction Y fixed to the support member 53 via a connecting member 59, and the armrest 3 is attached to the upper surface 62B positioned above the vertical direction Y. Specifically, the upper surface 62 </ b> B of the rotating plate 62 is attached to the armrest 3 by the fastening member 61, and the armrest 3 and the rotating plate 62 rotate relatively around the fastening member 61. With these rotations, the protrusion 64 slides in the sliding hole 63. Two protrusions 64 are provided point-symmetrically on the fastening member 61 that is a rotating shaft, and two sliding holes 63 are also provided. The sliding hole 63 is formed in an arc shape. These sliding holes 63 and protrusions 64 regulate the rotation angle of the rotating plate 62 within a certain range. Therefore, the armrest 3 can be relatively rotated within the range up to the position indicated by the phantom line in FIG.

  In the arm holder 2 as described above, the armrest 3 can be moved in the longitudinal direction Z by the sliding mechanism 5 and can be rotated in the lateral direction X by the rotating mechanism 6. When the user sits on the seat 11 of the wheelchair 1, the armrest 3 can be moved to the second position 35 so that the distal end 15B of the armrest 15 is exposed. By exposing the distal end portion 15B, the user can sit on the seat 11 while changing the direction of the body while grasping the distal end portion 15B and applying weight. Many users of the wheelchair 1 have inconvenient legs and arms, and it is not easy to change the body in front of the seat 11 of the wheelchair 1, but this arm holder 2 is used. By using it, you can sit down easily.

  After the user sits on the seat 11 of the wheelchair 1, the armrest 3 can be moved to the first position 34 side so that the user's forearm can be stably held. Since the armrest 3 can be moved to any position of the first position 34 and the second position 35, the armrest 3 can be moved to the most comfortable position according to the body shape of the user and the obstacle of the arm.

  Since the armrest 3 can be turned by the turning mechanism 6, it can be turned according to the use mode of the user and the forearm can be placed. That is, the armrest 3 can be moved to a more comfortable position. Generally, when the armrest 3 is rotated in the lateral direction X so that the rear end 3 </ b> A is located outside the armrest 15 and the front end 3 </ b> B is located inside the armrest 15, the forearm can be easily placed. If the armrest 3 does not rotate, the user's forearm is held parallel to the longitudinal direction Z of the armrest 15. If the forearm is kept parallel for a long time, the deltoid muscles of the user's back move to the center, and a sense of incongruity due to compression occurs. In addition, in order to eliminate this discomfort, the forearm may fall off the armrest 3 by moving the palm side of the forearm to the inside of the armrest 15. However, by rotating the armrest 3, the pressure can be eliminated and the forearm can be stably held, and the user can sit on the wheelchair 1 more comfortably. Furthermore, when standing up, if the armrest 3 is parallel to the armrest 15, the armrest 3 does not interfere with the user's operation.

  When the user operates the hand rim 14, the armrest 3 may be moved to the first position 34. The hand rim 14 is generally arranged outside the wheel 13, and the rotation axis of the wheel 13 and the hand rim 14 is often located below the backrest 12 in the vertical direction Y, and the user puts his arm outside the armrest 15. The hand rim 14 is operated by extending. If the armrest 3 is on the second position 35 side, the arm that operates the hand rim 14 may come into contact with the armrest 3 and interfere with the operation. However, by moving the armrest 3 to the first position 34, An interval is formed, and the operation of the hand rim 14 is not hindered.

  A rotation restricting portion 36 is provided on the back surface 33 of the armrest 3 on the front end 3B side. The rotation restricting portion 36 protrudes from the back surface 33, has a long rectangle in the lateral direction X, and is located outside the lateral direction X of the armrest 15 (see FIG. 3). The rotation restricting portion 36 prevents the armrest 3 from rotating when the armrest 3 is located at the second position 35. That is, when the rotation restricting portion 36 is about to move to the right side in FIG. 3, the rotation restricting portion 36 abuts on the armrest 15 and is prevented from rotating further to the inside of the armrest 15. By restricting the rotation in this manner, a user sitting on the seat seat 11 of the wheelchair 1 is prevented from having a finger or the like sandwiched between the armrest 3 and the armrest 15 that rotate.

  When the armrest 3 is rotated, the armrest 3 is slid to the first position 34 in the longitudinal direction Z, and the rotation restricting portion 36 is positioned outside the distal end portion 15B of the armrest 15 in the longitudinal direction Z. By doing so, the rotation restricting portion 36 can be safely rotated without coming into contact with the armrest 15.

  Since the armrest 3 as described above has the flat portion 31, in the case of a user whose wrist is difficult to move due to paralysis, the wrist and hand can be placed on the armrest 3 together with the forearm. Further, the armrest 3 can be prevented from falling from the armrest 3 by providing the wall portions 32 on both sides thereof. By setting the angle α formed with the flat portion 31 to 90 degrees or more, the wall portion 32 does not press the arm on which the wall portion 32 is placed, and prevents the upper end of the wall portion 32 from biting into the arm. be able to. The distance between the pair of wall portions 32 in the lateral direction X increases as the distance from the flat portion 31 increases. Therefore, when the user puts the forearm, the wall 32 is unlikely to collide, and after the forearm is put on, it can be prevented from biting in. In this embodiment, the wall 32 is substantially flat, but may be curved.

  A cushion material 37 can be provided on the flat portion 31 of the armrest 3. The cushion material 37 may include, for example, a core material made of cushioning polyurethane resin or the like and a covering member made of leather or the like that covers the core material. Thus, by providing the cushion material 37 separately, even if the armrest 3 is made of a relatively hard material, the arm holder 2 that is comfortable to use can be obtained. Specifically, the armrest 3 can be made of wood to give a high-class feeling, and the cushioning material 37 can be attached to the flat portion 31 to improve the feeling of use.

  The sliding mechanism 5 is not limited to the configuration of this embodiment as long as the armrest 3 is slidable in the longitudinal direction Z of the armrest 15, and a normal technique in this field can be used. Further, the rotation mechanism 6 is not limited to the configuration of this embodiment as long as the armrest 3 can be rotated with respect to the armrest 15.

  FIGS. 5A and 5B show another embodiment of the arm holder 2. The arm holder 2 of this embodiment further includes a moving mechanism 7 that allows the armrest 3 to move in the vertical direction Y. Other configurations are the same as those of the above-described embodiment, the same reference numerals are used for the same components, and detailed description thereof is omitted.

  A through hole 57 that penetrates in the vertical direction Y is formed in the support member 53 of the arm holder 2. A moving member 71 that extends in the vertical direction Y and whose upper end is fixed to the back surface 33 of the armrest 3 is inserted into the through hole 57. The moving member 71 can move in the vertical direction Y through the through hole 57. The moving member 71 is provided with a plurality of concave portions 58 arranged in the vertical direction Y, and the positioning member 72 is inserted into the concave portions 58 to restrict the movement of the moving member 71 and the armrest 3 in the vertical direction Y.

  The positioning member 72 includes a handle 73 and a pin 74 that is rotatably attached to the handle 73 via a shaft. The pin 74 is inserted into the recess 58 and is involved in the positioning of the moving member 71. The handle 73 rotates with respect to the support member 53, and has a fixed position shown in FIG. 5A and a release position shown in FIG. At the fixed position, the handle 73 presses the rear end of the pin 74 in the insertion direction on the right side of the drawing on its inner surface, and inserts the front end of the pin 74 into the recess 58. In the release position, the handle 73 is rotated clockwise, and accordingly, the pin 74 is moved to the left side of the drawing, the tip is removed from the recess 58, and the moving member 71 is movable in the vertical direction Y. When the position of the moved moving member 71 is fixed, the handle 73 is rotated counterclockwise, and the pin 74 is inserted into the recess 58 at a desired position again. Note that a spring member can be provided on the pin 74 so that the pin 74 is urged in a direction in which the pin 74 comes out of the recess 58.

  In the arm holder 2 as described above, the armrest 3 can be positioned in the vertical direction Y by inserting the positioning member 72 into any of the plurality of recesses 58. Therefore, the position of the armrest 3 in the vertical direction Y can be determined according to the body shape of the user, and a more comfortable use can be realized. Further, since the positioning member 72 is inserted into the recess 58 to fix the position, the position can be maintained even when the user puts the forearm on the armrest 3.

  In this embodiment, the movement in the vertical direction Y is restricted by the recess 58 and the positioning member 72, but this is not a limitation. Moreover, in this embodiment, although the movement to the up-down direction Y in steps is possible, the structure which enables a continuous movement may be sufficient.

  In addition to the materials described in the present specification, various known materials that are usually used in this type of field can be used for each constituent member constituting the arm holder 2 without limitation. Further, in the specification of the present invention and the scope of claims for utility model registration, the terms “first” and “second” are used merely to distinguish elements, positions, and the like having the same names.

DESCRIPTION OF SYMBOLS 1 Wheelchair 2 Arm holder 3 Armrest 4 Connecting member 5 Sliding mechanism 7 Moving mechanism 15 Armrest 15A Proximal end 15B Distal end

Claims (2)

An arm holder comprising: an armrest attached to an armrest of a wheelchair; and a connecting member that connects the armrest to the armrest;
The connecting member includes a sliding mechanism that allows the armrest to slide along the armrest,
The armrest is smaller than a dimension in the longitudinal direction of the armrest, and a first position located on a distal end side of the armrest and a proximal end located opposite to the distal end by the sliding mechanism. An arm holder having a second position located on the part side.   The arm holder according to claim 1, further comprising a moving mechanism that moves the armrest in a vertical direction perpendicular to the longitudinal direction.

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