JP2018130314A - Body support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a body support device with a simple structure in which the position of an armrest can be easily adjusted.SOLUTION: A body support device includes a support base for supporting a user, a trestle for supporting the support base, an arm rest 13 for supporting the arm of the user supported by the support base, and a connection mechanism 25 for connecting the trestle and the arm rest 13, to which the arm rest 13 is fixed so as to move in a right and left direction Y. A locking part 50 for restricting the movable range of the arm rest 13 includes a first locking part 51 fixed to one of the connection mechanism 25 and the arm rest 13, and a second locking part 52 provided to the other of them, in which the first locking part 51 is arranged so as to move in the right and left direction Y.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a body support device.

  Conventionally, a body support apparatus as shown in Patent Document 1 below is known. The body support device includes a support base, a gantry, and an armrest. The support base supports the user. The gantry supports the support base. The armrest supports the user's arm supported by the support base.

JP 2000-14724 A

  In the conventional body support device, it is desired to adjust the position of the armrest in the left-right direction according to, for example, the usage situation of the user.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a body support device in which the position of an armrest is easily adjusted and the structure is simplified.

In order to solve the above problems, the present invention proposes the following means.
(1) A body support device according to the present invention includes a support base that supports a user, a base that supports the support base, an armrest that supports a user's arm supported by the support base, and the base. A locking mechanism that connects the armrest and the armrest is movably fixed in a left-right direction, and a locking portion that limits a movable range of the armrest is provided on one of the connection mechanism and the armrest. A fixed first locking portion; and a second locking portion provided on the other side, in which the first locking portion is arranged so as to be movable in the left-right direction.

In this case, when the armrest is moved in the left-right direction with respect to the coupling mechanism, the first locking portion moves in the left-right direction within the second locking portion. And the 1st latching | locking part latches to the side edge of the left-right direction of a 2nd latching | locking part, and the movement to the further left-right direction of a 1st latching | locking part is controlled. Thereby, the movement of the armrest is also restricted, and the movable range of the armrest is limited.
According to this body support device, the armrest can be moved in the left-right direction while restricting the movable range of the armrest. Thereby, an armrest does not move to the left-right direction too much, and it can make it easy to adjust the position of an armrest.
Moreover, the movable range of an armrest can be restrict | limited by employ | adopting the structure by which the 1st latching | locking part is arrange | positioned in a 2nd latching | locking part as a latching | locking part. Therefore, for example, the limitation of the movable range of the armrest can be realized by a simple configuration such as forming a hole (a groove or a through hole) as the second locking portion. Thereby, simplification of the structure of the body support apparatus can be achieved.

(2) In the body support device according to (1), the first locking portion may be fixed to the coupling mechanism, and the second locking portion may be provided on the armrest. Good.

  In this case, the 2nd latching | locking part is provided in the armrest. The armrest has a certain width in the left-right direction in order to support the user's arm. Therefore, for example, the second locking portion can be formed larger in the left-right direction using the width of the armrest in the left-right direction. Accordingly, for example, the size of the second locking portion in the left-right direction can be designed with a high degree of freedom without enlarging the coupling mechanism and the arm rest in the left-right direction, and the movable range of the armrest can be set in various ways. Can do so.

(3) In the body support device according to (2) above, the second locking portion is a through-hole penetrating the armrest, and the first locking portion is screwed to the coupling mechanism. May be adopted.

In this case, the second locking portion is a through-hole penetrating the armrest, and the first locking portion is screwed to the coupling mechanism. Therefore, when the armrest is assembled to the coupling mechanism, the first locking portion is assembled to the armrest from the opposite side of the coupling mechanism in a state where the armrest is disposed on the coupling mechanism, and the first locking portion is attached to the second engagement mechanism. It can be screwed onto the coupling mechanism through the stop. Thereby, a body support apparatus can be made easy to manufacture.
For example, when the first locking portion is a bolt having a head, the armrest can be sandwiched between the head and the coupling mechanism. In this case, the fastening force (screwing force) with respect to the connection mechanism of the first locking portion can be appropriately adjusted to adjust the frictional force of the armrest with respect to the first locking portion and the connection mechanism. As a result, the operating force required to move the armrest in the left-right direction can be adjusted, for example, the operating force can be set to a certain level or more, and unexpected movement of the armrest due to unexpected external force can be suppressed. be able to.

(4) In the body support apparatus according to any one of (1) to (3), a rotation coupling unit that couples the coupling mechanism and the armrest so as to be rotatable about a rotation axis extending in a vertical direction is further provided. It is also possible to employ a configuration in which the locking portion is positioned on the front side along the front-rear direction with respect to the rotation connecting portion.

In this case, the locking portion is located on the front side of the rotation connecting portion. Therefore, for example, it becomes possible to arrange the rotation connecting portion at the rear end portion of the armrest, and the armrest can be rotated in the left-right direction so that the fingertip opens and closes starting from the user's elbow. As a result, for example, the user can easily get on and off the support table, or the user on the support table can easily perform another treatment (for example, medical treatment such as dialysis or infusion). The convenience of the apparatus can be improved.
Furthermore, the latching | locking part is located in front of the rotation connection part. Therefore, for example, by appropriately setting the distance in the front-rear direction between the locking portion and the rotation connecting portion, the movable range of the armrest is changed while maintaining the size in the left-right direction of the second locking portion equal. be able to. Thereby, for example, the movable range of the armrest can be set variously.

(5) In the body support device according to any one of (1) to (4) above, the frame may include a load receiving portion that abuts the connection mechanism from the opposite side of the armrest. Good.

  In this case, the gantry includes a load receiving portion. Therefore, for example, when the user gets on and off the support base, when the user leans on the armrest, the load receiving portion can receive the load acting on the armrest from the user via the connecting mechanism. As a result, for example, unexpected rattling of the armrest can be suppressed, and the armrest can be used for assistance in getting on and off the support base, and the convenience of the body support device can be improved.

(6) In the body support apparatus according to any one of (1) to (5) above, a configuration in which the gantry can change the form of the support pedestal may be adopted.
(7) In the body support device according to (6) above, the gantry has a form of the support table, a chair position that supports a user in a sitting position, and a bed position that supports a user in a supine position, You may employ | adopt the structure which can be changed between.

  ADVANTAGE OF THE INVENTION According to this invention, the position of an armrest can be adjusted and the body support apparatus with a simple structure can be provided.

It is a body support device concerning one embodiment of the present invention, and is a perspective view showing the state where a support stand is a chair position. FIG. 2 is a perspective view showing the body supporting device shown in FIG. 1 with a cover being removed from the gantry. It is a side view of the body support apparatus shown in FIG. It is a top view of the body support apparatus shown in FIG. FIG. 3 is a perspective view showing the body support device shown in FIG. 2 in a state where the support base is in a bed position. It is a side view of the body support apparatus shown in FIG. It is a top view of the body support apparatus shown in FIG. It is a side view explaining the function of the body support apparatus shown in FIG. 1, Comprising: It is a figure explaining raising / lowering of a backrest. It is a side view explaining the function of the body support apparatus shown in FIG. 1, Comprising: It is a figure explaining raising / lowering of a legrest. It is a side view explaining the function of the body support apparatus shown in FIG. 1, Comprising: It is a figure explaining raising / lowering of a support stand. It is a side view explaining the function of the body support apparatus shown in FIG. 1, Comprising: It is a figure explaining the change from the chair position of a support stand to a bed position and a shock position. It is a side view explaining the function of the body support apparatus shown in FIG. 1, Comprising: It is a figure explaining the change from the shock position of a support stand to a chair position. It is a perspective view of the principal part containing the armrest and 1st link mechanism which comprise the body support apparatus shown in FIG. It is a top view of the principal part shown in FIG. It is a side view of the principal part shown in FIG. FIG. 16 is an enlarged cross-sectional view of a part of the side view shown in FIG. 15. It is an expanded sectional view of the principal part which comprises the body support apparatus which concerns on one modification of this invention, Comprising: It is a partial expanded sectional view equivalent to FIG.

Hereinafter, a body support apparatus according to an embodiment of the present invention will be described with reference to FIGS.
The body support device 10 is used as a medical chair, for example. The body support device 10 can be used when the user undergoes dialysis, for example. The body support device 10 can be adjusted up and down based on electric power and has a so-called reclining function.

  In the following, the front-rear direction and the left-right direction of the user in a state where the body support device 10 supports the user in the sitting position are referred to as the front-rear direction X and the left-right direction Y of the body support device 10, respectively. In addition, the front side and the rear side of the user in a state where the body support device 10 supports the user in the sitting posture are referred to as a front side X1 and a rear side X2 along the front-rear direction X, respectively. The front side X1 and the rear side X2 are the user's foot side and head side in a state where the body support device 10 supports the user in the supine posture, respectively.

  As shown in FIGS. 1 to 7, the body support device 10 includes a support base 11, a gantry 12, an armrest 13, a footrest 14, and a drive unit (not shown). The support base 11, the armrest 13, and the footrest 14 are each provided with an outer skin portion 15 that forms an outer surface, and a cushion material (not shown) disposed inside the outer skin portion 15. The cushion material absorbs external force by being deformed. As shown in FIG. 1, a part of the gantry 12 is covered with a cover C. However, in FIGS. 2 to 7, the cover C is not shown to show the internal structure of the gantry 12.

  The support base 11 supports a user (user's torso). The support base 11 includes a seat surface portion 21, a backrest 22, and a legrest 23. The seat portion 21 supports the user's buttocks. The backrest 22 supports the upper body of the user. A pillow 24 that supports the user's head is attached to the backrest 22. The legrest 23 supports a user's leg part.

  The gantry 12 supports the support 11, the armrest 13, and the footrest 14. The gantry 12 can change the form of the support 11. The gantry 12 can change the form of the support base 11 between a chair position P1 as shown in FIGS. 1 to 4 and a bed position P2 (flat position) as shown in FIGS. .

  As shown in FIGS. 1 to 4, the support base 11 at the chair position P <b> 1 supports the user in the sitting position. In the chair position P1, the seat surface portion 21 faces upward. Further, the backrest 22 extends upward from the end portion of the rear side X <b> 2 of the seat surface portion 21. Further, the legrest 23 extends from the end portion of the front side X1 of the seat surface portion 21 toward the front X1 obliquely lower side.

  As shown in FIGS. 5 to 7, the support base 11 at the bed position P2 supports the user in the supine position. In the bed position P2, the entire support base 11 (the backrest 22, the seating surface portion 21, and the legrest 23) extends in a straight line along the front-rear direction X and is substantially parallel to the horizontal direction.

The gantry 12 may be capable of continuously changing the form of the support base 11 between the chair position P1 and the bed position P2, or may be intermittently changeable.
The form of the support base 11 can be continuously changed between the chair position P1 and the bed position P2. The form of the support base 11 is not limited to the chair position P1 and the bed position P2, but the chair position P1 and the like. It means that it can be held at any intermediate position between the bed positions P2.
The form of the support base 11 can be changed intermittently between the chair position P1 and the bed position P2. The form of the support base 11 can be changed only by the chair position P1 and the bed position P2, or the support base 11 This means that, in addition to the chair position P1 and the bed position P2, it can be held at a specific (for example, several) intermediate position between the chair position P1 and the bed position P2.

  As shown in FIG. 1 to FIG. 4, the armrest 13 supports the user's arm (the forearm ahead of the elbow) supported by the support base 11. The armrests 13 are provided at both ends of the support base 11 in the left-right direction Y, respectively. The armrest 13 extends horizontally from the backrest 22 toward the front side X1 in a state where the support base 11 is at the chair position P1.

  The armrest 13 is connected to the gantry 12 via the first link mechanism 25. The first link mechanism 25 includes a support link portion 25a extending in the front-rear direction X. As shown by a two-dot chain line in FIG. 4, the armrest 13 is fixed to the support link portion 25a so as to be movable in the left-right direction Y.

  As shown by a two-dot chain line in FIG. 3, the first link mechanism 25 supports the armrest 13 so as to be rotatable around a first axis extending in the left-right direction Y. The armrest 13 moves toward the upper oblique rear side X2 by being rotated upward about the first axis. Thereby, when a user approaches the support stand 11 from the outside or gets off from the support stand 11, it can suppress that the armrest 13 obstructs a user.

  The footrest 14 supports the user's foot tips supported by the support base 11. The footrest 14 is provided on the front side X <b> 1 with respect to the support base 11. The footrest 14 is connected to the gantry 12 via the second link mechanism 26. As shown by a two-dot chain line in FIG. 3, the second link mechanism 26 supports the footrest 14 so as to be rotatable around a second axis extending in the left-right direction Y.

  In addition, when the form (position) of the support base 11 is changed between the chair position P1 and the bed position P2, the gantry 12 has the armrest 13 and the footrest 14 via the first link mechanism 25 and the second link mechanism 26, respectively. Move. The armrest 13 and the footrest 14 are displaced following the change of the support base 11 (change of form between the chair position P1 and the bed position P2). As shown in FIG. 5 to FIG. 7, the armrest 13 extends horizontally along the front-rear direction X in a state of being aligned in the left-right direction Y with respect to the seating surface portion 21 in a state where the support base 11 is at the bed position P2. Yes. Further, the footrest 14 protrudes upward from the support base 11.

  The drive unit is disposed inside the gantry 12 (built in the gantry 12). The said drive part changes the form of the support stand 11 via the mount frame 12 based on the input from an operation part (not shown). The drive unit can change the form of the support base 11 as shown in FIGS.

As shown in FIG. 8, the said drive part can raise / lower the backrest 22 in the support stand 11 of the chair position P1. Thereby, the inclination angle of the backrest 22 is changed.
As shown in FIG. 9, the said drive part can raise / lower the legrest 23 in the support stand 11 of the chair position P1. Thereby, the inclination angle of the legrest 23 is changed.

  As shown in FIG. 10, the drive unit can move up and down the entire support base 11. In addition, in FIG. 10, although the support base 11 of the chair position P1 is raised / lowered, the support base 11 of the bed position P2 can also be raised / lowered.

As shown in FIG. 11, the drive unit can be changed to the support base 11 at the bed position P2 by moving the seat surface portion 21, the backrest 22 and the legrest 23 of the support base 11 at the chair position P1 in conjunction with each other. The support base 11 at the bed position P2 can be further changed to a shock position P3 in which the support base 11 is inclined obliquely downward in the rear side X2 of the front-rear direction X.
As shown in FIG. 12, the drive unit can be changed to the support base 11 at the chair position P1 by moving the seat surface portion 21, the backrest 22 and the legrest 23 of the support base 11 at the shock position P3 in conjunction with each other. In the present embodiment, the gantry 12 can change the form of the support base 11 not only between the chair position P1 and the bed position P2 but also between the chair position P1 and the shock position P3.

  As shown in FIGS. 13 to 16, the body support apparatus 10 further includes a rotation connecting part 40, a locking part 50, and an auxiliary mechanism 60. The rotary connection unit 40 connects the first link mechanism 25 (connection mechanism) and the armrest 13 so as to be rotatable around a rotation axis O extending in the vertical direction Z. The rotary connecting portion 40 is disposed at the rear end portion of the armrest 13. In the present embodiment, the armrest 13 includes a core member 13a covered with the cushion material. The core member 13 a is formed in a flat rectangular parallelepiped shape that is long in the front-rear direction X. The rotary connecting portion 40 is disposed at the rear end portion of the core member 13a.

  As shown in FIG. 16, an insertion hole 41 through which the rotary connecting portion 40 is inserted is formed at the rear end portion of the core member 13 a. The insertion hole 41 is a through hole that penetrates the armrest 13 (core member 13a). The insertion hole 41 is formed by a round hole portion 41a provided on each of the upper and lower surfaces of the core member 13a.

  The rotary connecting portion 40 is screwed to the support link portion 25a (connecting mechanism). The rotary connecting part 40 is formed by a bolt 70 having a head 71. The head portion 71 is positioned above the core member 13a, the shaft portion 72 is inserted through the insertion hole 41, and the lower end portion of the shaft portion 72 (the lower end portion of the rotary connecting portion 40) is screwed to the support link portion 25a. Has been. In the present embodiment, the support link portion 25 a is provided with a nut 73, and the shaft portion 72 is screwed to the nut 73. In the illustrated example, the shaft portion 72 is inserted into the collar 74, and the shaft portion 72 and the collar 74 are integrally inserted into the insertion hole 41.

  As shown in FIGS. 13 to 15, the locking portion 50 is provided in each of the first link mechanism 25 (connection mechanism) and the armrest 13. The locking part 50 limits the movable range of the armrest 13 by locking each other. The locking part 50 is located on the front side X1 with respect to the rotation connecting part 40. The latching | locking part 50 is arrange | positioned rather than the center of the front-back direction X in the core member 13a at the back side X2.

  The locking part 50 includes a first locking part 51 and a second locking part 52. The 1st latching | locking part 51 is fixed to one of the 1st link mechanism 25 and the armrest 13, and the 2nd latching | locking part 52 is provided in the other. In the present embodiment, the first locking portion 51 is fixed to the first link mechanism 25, and the second locking portion 52 is provided on the armrest 13.

  The 2nd latching | locking part 52 is a hole, and is a through-hole which penetrates the armrest 13 (core member 13a) in the example of illustration. The 2nd latching | locking part 52 is formed in the elongate hole shape extended in the left-right direction Y. As shown in FIG. The second locking portion 52 is curved in a circular arc shape with the rotation coupling portion 40 (rotation axis O) as the center when the armrest 13 is viewed from above. The 2nd latching | locking part 52 is formed of the long hole part 52a provided in each upper and lower surfaces of the core member 13a.

  The 1st latching | locking part 51 is arrange | positioned inside the 2nd latching | locking part 52 so that the movement to the left-right direction Y is possible. The first locking part 51 is screwed to the support link part 25a. The first locking portion 51 is formed by a bolt 70 having a head 71. The head portion 71 is located above the core member 13a, the shaft portion 72 is inserted through the second locking portion 52, and the lower end portion of the shaft portion 72 (the lower end portion of the first locking portion 51) is a support link. It is screwed to the part 25a. In the present embodiment, the support link portion 25 a is provided with a nut 73, and the shaft portion 72 is screwed to the nut 73. In the example shown in the figure, the shaft portion 72 is inserted into the collar 74, and the shaft portion 72 and the collar 74 are integrally inserted into the second locking portion 52.

  Each of the rotary connecting portion 40 and the first locking portion 51 can sandwich the core member 13a between the head portion 71 and the support link portion 25a. Therefore, the fastening force (screwing force) with respect to the 1st link mechanism 25 of the rotation coupling part 40 or the 1st latching | locking part 51 is adjusted suitably, and the armrest with respect to the rotation coupling part 40, the 1st latching | locking part 51, and the 1st link mechanism 25 is adjusted. Thirteen frictional forces can be adjusted. Thereby, the operating force required to move the armrest 13 in the left-right direction Y can be adjusted.

  The auxiliary mechanism 60 assists the adjustment of the frictional force. The auxiliary mechanisms 60 are provided in the rotary connecting portion 40 and the first locking portion 51, respectively. The auxiliary mechanism 60 provided in the rotary connecting portion 40 and the auxiliary mechanism 60 provided in the first locking portion 51 have a common configuration.

  The auxiliary mechanism 60 includes a bush 61 and a washer 62. The bush 61 is disposed between the support link portion 25a (nut 73) and the core member 13a, and between the head 71 of the bolt 70 and the core member 13a. The bush 61 includes a flange portion 61a and a tube portion 61b. The flange portion 61 a is in contact with the upper surface of the nut 73 or the lower surface of the head portion 71. The tube portion 61b extends in the vertical direction Z from the flange portion 61a. The shaft portion 72 of the bolt 70 is inserted through the tube portion 61b. The bush 61 suppresses an excessive increase in the frictional resistance between the shaft portion 72 (collar 74) and the core member 13a, for example. For example, the surface of the bush 61 can be resin-coated.

The washer 62 is inserted through the shaft portion 72 (collar 74). In the present embodiment, the washer 62 is inserted through the cylindrical portion 61b. The washer 62 includes a resin washer 63 and a metal washer 64. The resin washer 63 is in contact with the core member 13a. The metal washer 64 is disposed between the resin washer 63 and the flange portion 61a.
In each of the rotary connecting portion 40, the locking portion 50, and the auxiliary mechanism 60, the portion located above the core member 13a is covered from above by the cushion material.

  As shown in FIGS. 1 to 3, the gantry 12 includes a load receiving portion 12 a. The load receiving portion 12 a comes into contact with the first link mechanism 25 from the opposite side of the armrest 13. The load receiving portion 12 a protrudes outward in the left-right direction Y from the support base 11. In the state where the support base 11 is located at the chair position P1, the load receiving portion 12a is in contact with the portion located on the rear side X2 from the armrest 13 in the support link portion 25a from below. As shown in FIGS. 5 and 6, in the state where the support base 11 is located at the bed position P <b> 2, the load receiving portion 12 a is located on the support link portion 25 a on the rear side X <b> 2 from the armrest 13, and the armrest 13. And a portion corresponding to the rear end portion of the rear end of the rear end.

Next, the operation of the body support device 10 will be described.
When the armrest 13 as shown in FIG. 13 is moved in the left-right direction Y with respect to the first link mechanism 25, the first locking portion 51 moves in the left-right direction Y within the second locking portion 52. And the 1st latching | locking part 51 latches to the side edge (inner periphery) of the left-right direction Y of the 2nd latching | locking part 52, and the movement to the left-right direction Y of the 1st latching | locking part 51 further is carried out. Be regulated. Thereby, the movement of the armrest 13 is also restricted, and the movable range of the armrest 13 is limited.

As described above, according to the body support device 10 according to the present embodiment, the armrest 13 can be moved in the left-right direction Y while restricting the movable range of the armrest 13. Thereby, the armrest 13 does not move excessively in the left-right direction Y, and the position of the armrest 13 can be easily adjusted.
Moreover, the movable range of the armrest 13 can be restrict | limited by employ | adopting the structure by which the 1st latching | locking part 51 is arrange | positioned in the 2nd latching | locking part 52 as the latching | locking part 50. FIG. Therefore, for example, the movable range of the armrest 13 can be limited by a simple configuration such as forming a hole (a groove or a through hole) as the second locking portion 52 as in the present embodiment. Thereby, simplification of the structure of the body support apparatus 10 can be achieved.

  Further, the second locking portion 52 is provided on the armrest 13. The armrest 13 has a certain width in the left-right direction Y in order to support the user's arm. Therefore, for example, the second locking portion 52 can be formed large in the left-right direction Y by using the width of the armrest 13 in the left-right direction Y. Accordingly, for example, the size of the second locking portion 52 in the left-right direction Y can be designed with a high degree of freedom without increasing the first link mechanism 25 and the arm rest 13 in the left-right direction Y. Various movable ranges can be set.

  Further, the second locking portion 52 is a through hole that penetrates the armrest 13, and the first locking portion 51 is screwed to the first link mechanism 25. Therefore, when the armrest 13 is assembled to the first link mechanism 25, the armrest 13 is disposed on the first link mechanism 25, and the armrest 13 is moved from the opposite side (for example, the upper side) of the first link mechanism 25 to the first engagement. The first locking portion 51 can be screwed to the first link mechanism 25 through the second locking portion 52 by assembling the locking portion 51. Thereby, the body support apparatus 10 can be easily manufactured.

  For example, as in the present embodiment, when the first locking portion 51 is a bolt 70 having a head 71, the armrest 13 can be sandwiched between the head 71 and the first link mechanism 25. In this case, the fastening force (screwing force) of the first locking part 51 to the first link mechanism 25 is appropriately adjusted, and the frictional force of the armrest 13 with respect to the first locking part 51 and the first link mechanism 25 can be adjusted. it can. As a result, it is possible to adjust the operation force necessary to move the armrest 13 in the left-right direction Y, for example, to set the operation force to a certain level or more, and to unexpectedly cause the armrest 13 to be unexpectedly caused by an unexpected external force. Movement can be suppressed.

Further, the locking portion 50 is located on the front side X1 with respect to the rotation connecting portion 40. Therefore, for example, it becomes possible to arrange the rotation connecting portion 40 at the rear end portion of the armrest 13, and the armrest 13 can be rotated in the left-right direction Y so that the fingertip opens and closes starting from the user's elbow. it can. Thereby, for example, it becomes easy for the user to get on and off the support base 11, and it becomes easy for others on the user on the support base 11 to perform treatment (for example, medical treatment such as dialysis and infusion). The convenience of the body support apparatus 10 can be improved.
Further, the locking portion 50 is located on the front side X1 with respect to the rotation connecting portion 40. Therefore, for example, by appropriately setting the distance in the front-rear direction X between the locking portion 50 and the rotary connecting portion 40, the armrest 13 is maintained while maintaining the same size in the left-right direction Y of the second locking portion 52. The movable range of can be changed. Thereby, for example, the movable range of the armrest 13 can be set variously.

  Further, the gantry 12 includes a load receiving portion 12a. Therefore, for example, when the user gets on and off the support base 11, when the user leans on the armrest 13, a load acting on the armrest 13 from the user via the first link mechanism 25 is applied to the load receiving portion 12 a. Can take. Thereby, for example, unexpected rattling of the armrest 13 can be suppressed, and the armrest 13 can be used for assistance in getting on and off the support base 11, and convenience of the body support device 10 can be improved. .

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, instead of the auxiliary mechanism 60 according to the embodiment, an auxiliary mechanism 80 according to a modification shown in FIG. 17 may be provided. In the present modification, stepped bolts are used as the bolts 70 and the collar 74 is not provided.
In the auxiliary mechanism 80, the bush 61 is disposed only between the support link portion 25a and the core member 13a, and is not disposed between the head 71 of the bolt 70 and the core member 13a. The washer 62 includes a wave washer 62a and a flat washer 62b. The wave washer 62a is disposed between the head 71 of the bolt 70 and the core member 13a. The flat washer 62b is between the lower surface of the head 71 and the upper surface of the wave washer 62a, between the lower surface of the wave washer 62a and the upper surface of the core member 13a, and between the lower surface of the core member 13a and the upper surface of the flange 61a. Each is provided. For the material of the washer 62, for example, a metal or a synthetic resin can be appropriately employed.
In the auxiliary mechanism 80, when the fastening force is adjusted, the elastic deformation amount of the wave washer 62a is mainly adjusted. As a result, the frictional force can be adjusted with higher accuracy than when the auxiliary mechanism 80 is not provided, and the adjustment of the frictional force can be assisted.

The auxiliary mechanisms 60 and 80 and the load receiving portion 12a may be omitted.
In the said embodiment, although the 2nd latching | locking part 52 is a through-hole, the groove | channel which does not penetrate the armrest 13 (core member 13a) may be sufficient as the 2nd latching | locking part 52.

  The gantry 12 may not be able to change the form of the support 11.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

DESCRIPTION OF SYMBOLS 10 Body support apparatus 11 Support stand 12 Mounting base 12a Load receiving part 13 Armrest 25 1st link mechanism (connection mechanism)
40 Rotating connecting portion 50 Locking portion 51 First locking portion 52 Second locking portion O Rotating shaft P1 Chair position P2 Bed position X Front-rear direction X1 Front side Y Left-right direction

In order to solve the above problems, the present invention proposes the following means.
(1) a body supporting device according to the present invention, connected a support base for supporting the user, the arm rest supporting the arms of the support base to be supported the user, and the said support base armrest, the A connecting mechanism in which an armrest is fixed so as to be movable in the left-right direction; and a rotating connecting portion that connects the connecting mechanism and the armrest so as to be rotatable around a rotation axis extending in a vertical direction, and the movable range of the armrest The first locking portion fixed to one of the coupling mechanism and the armrest, the first locking portion provided inside the first locking portion, and the first locking portion are arranged in the other. A second locking portion that restricts the movement of the locking portion in the left-right direction, and the locking portion is located on the front side in the front-rear direction with respect to the rotation connecting portion .

In this case, when the armrest is moved in the left-right direction with respect to the coupling mechanism, the first locking portion moves in the left-right direction within the second locking portion. And the 1st latching | locking part latches to the side edge of the left-right direction of a 2nd latching | locking part, and the movement to the further left-right direction of a 1st latching | locking part is controlled. Thereby, the movement of the armrest is also restricted, and the movable range of the armrest is limited.
According to this body support device, the armrest can be moved in the left-right direction while restricting the movable range of the armrest. Thereby, an armrest does not move to the left-right direction too much, and it can make it easy to adjust the position of an armrest.
Moreover, the movable range of an armrest can be restrict | limited by employ | adopting the structure by which the 1st latching | locking part is arrange | positioned in a 2nd latching | locking part as a latching | locking part. Therefore, for example, the limitation of the movable range of the armrest can be realized by a simple configuration such as forming a hole (a groove or a through hole) as the second locking portion. Thereby, simplification of the structure of the body support apparatus can be achieved.
The locking part is located in front of the rotation connecting part. Therefore, for example, it becomes possible to arrange the rotation connecting portion at the rear end portion of the armrest, and the armrest can be rotated in the left-right direction so that the fingertip opens and closes starting from the user's elbow. As a result, for example, the user can easily get on and off the support table, or the user on the support table can easily perform another treatment (for example, medical treatment such as dialysis or infusion). The convenience of the apparatus can be improved.
The locking part is located in front of the rotation connecting part. Therefore, for example, by appropriately setting the distance in the front-rear direction between the locking portion and the rotation connecting portion, the movable range of the armrest is changed while maintaining the size in the left-right direction of the second locking portion equal. be able to. Thereby, for example, the movable range of the armrest can be set variously.

(4) the body supporting device according to any one of the above (1) to (3) may be employed further comprises constituting a load bearing portion abuts the opposite side of the armrest to the connecting mechanism.

( 5 ) The body support apparatus according to any one of (1) to ( 4 ) may employ a configuration in which the form of the support base can be changed.
( 6 ) In the body support apparatus according to ( 5 ), the form of the support base is changed between a chair position that supports a user in a sitting position and a bed position that supports a user in a supine position. A possible configuration may be adopted.
(7) In the body support device according to any one of (1) to (6), in the armrest that is moved outward in the left-right direction around the rotation axis in the top view of the body support device, the armrest A configuration may be adopted in which the end located on the front side is spaced apart from the support base in the left-right direction rather than before the movement.

Claims (7)

A support base for supporting the user;
A frame that supports the support;
An armrest for supporting a user's arm supported by the support base;
A connection mechanism that connects the gantry and the armrest, and the armrest is fixed so as to be movable in the left-right direction; and
The locking portion that limits the movable range of the armrest includes a first locking portion that is fixed to one of the coupling mechanism and the armrest, and a first locking portion that is provided on the other side in the left-right direction. A body support device comprising: a second locking portion that is movably disposed. The first locking portion is fixed to the coupling mechanism;
The body support apparatus according to claim 1, wherein the second locking portion is provided on the armrest. The second locking portion is a through-hole penetrating the armrest;
The body support device according to claim 2, wherein the first locking portion is screwed to the coupling mechanism. A rotation coupling portion that couples the coupling mechanism and the armrest so as to be rotatable around a rotation axis extending in a vertical direction;
The body support device according to any one of claims 1 to 3, wherein the locking portion is located on the front side along the front-rear direction with respect to the rotation connecting portion.   The body support device according to any one of claims 1 to 4, wherein the gantry includes a load receiving portion that abuts the connection mechanism from an opposite side of the armrest.   The body support apparatus according to any one of claims 1 to 5, wherein the gantry can change a form of the support base.   The body according to claim 6, wherein the gantry can change the form of the support base between a chair position for supporting a user in a sitting position and a bed position for supporting a user in a supine position. Support device.

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