JP6795420B2 - Body support device - Google Patents

Description

The present invention relates to a body support device.

Conventionally, as shown in Patent Document 1 below, a support base that supports the user, a base that supports the support base, and a footrest that is supported by the base and supports the toes of the user supported by the support base. And, a body support device equipped with is known.
In this body support device, the posture of the footrest is changed between the accommodation state and the use state according to the change between the chair position and the bed position of the support base.

Japanese Unexamined Patent Publication No. 2000-14723

However, in the conventional body support device, the posture of the footrest is determined to be the accommodation state or the use state according to the form of the support base, which is not easy to use. For example, when the user is tall, when the support base is located in the chair position, the footrest may feel narrow due to the housed state.

The present invention has been made in view of the above-mentioned circumstances, and provides a body support device that can improve the convenience of the user and that the toes of a tall user do not feel narrow. The purpose is.

In order to solve the above problems, the present invention proposes the following means.
(1) The body support device according to the present invention supports a support base that supports the user, a base that supports the support base, and a footrest of the user that is supported by the support base and is supported by the support base. The footrest is provided with a leg rest for supporting the user's leg, and the footrest is provided between the uppermost position and the lowermost position around a rotation axis extending in the left-right direction. The footrest, which is rotatably supported and located at the lowermost position, is located below the upper surface of the legrest.
The term "below the upper surface of the leg rest" means that it is below the extension line from the upper surface of the leg rest along the thickness direction of the leg rest.

According to the present invention, since the footrest is rotatably supported by the support base between the uppermost end position and the lowermost end position, the position of the footrest can be arbitrarily adjusted with respect to the legrest. Thereby, the convenience of the user can be improved. Further, when the footrest is located at the lowermost position, the footrest is located below the upper surface of the legrest along the thickness direction of the legrest. Therefore, even if the user's legs are long, the legrest is located. It is possible to extend the legs from the upper surface of the footrest toward the upper part of the footrest, and it is possible to prevent the toes from feeling narrow.

(2) In the body support device according to the above (1), the footrest located at the uppermost end position may adopt a configuration in which the footrest is located on the front side of the front end portion of the leg rest.
In this case, since the footrest is located in front of the front end of the legrest at the uppermost position, it is possible to prevent the toes from feeling narrow, and for example, the calf can be extended by pressing the sole of the foot against the footrest. Footrests can be used to care for the toes.

(3) In the body support device according to (1) or (2), the footrest located at the lowermost position adopts a configuration in which the footrest faces the front end of the legrest with a gap in the front-rear direction. You may.

In this case, since the footrest faces the front end of the legrest with a gap in the front-rear direction at the lowermost position, for example, the footrest can be placed on the footrest while putting a heel in the gap. Can be supported by the footrest even if is located below the top surface of the legrest.

(4) In the body support device according to any one of (1) to (3) above, the pedestal may adopt a configuration in which the form of the support pedestal can be changed.
(5) In the body support device according to (4) above, the pedestal has the form of the support, a chair position that supports the user in the sitting posture, and a bed position that supports the user in the supine posture. A configuration that can be changed between may be adopted.

According to the present invention, the convenience of the user can be improved, and the toes of a tall user do not feel narrow.

It is a body support device which concerns on one Embodiment of this invention, and is the perspective view which shows the state which the support base is a chair position. FIG. 5 is a perspective view showing a state in which the cover of the body support device shown in FIG. 1 is removed from the gantry. It is a side view of the body support device shown in FIG. It is a top view of the body support device shown in FIG. FIG. 2 is a perspective view showing a state in which the support base is in the bed position in the body support device shown in FIG. It is a side view of the body support device shown in FIG. It is a top view of the body support device shown in FIG. It is a side view explaining the function of the body support device shown in FIG. 1, and is the figure explaining the raising and lowering of a backrest. It is a side view explaining the function of the body support device shown in FIG. 1, and is the figure explaining the raising and lowering of a leg rest. It is a side view explaining the function of the body support device shown in FIG. 1, and is the figure explaining the raising and lowering of a support base. It is a side view explaining the function of the body support device shown in FIG. 1, and is the 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 device shown in FIG. 1, and is the figure explaining the change from the shock position of the support base to the chair position. It is a side view explaining the function of the body support device shown in FIG. 1, and is the figure explaining the change from the chair position of the support stand to the knee extension position. It is an enlarged view around the footrest of the body support device shown in FIG. (A) is a diagram showing a rotation position of a footrest in the chair position of the body support device shown in FIG. 1, and (b) is a diagram showing a rotation position of the footrest in the chair position of the body support device which is a comparative example. (A) is a diagram showing a rotation position of the footrest in the knee extension position of the body support device shown in FIG. 1, and (b) is a diagram showing the rotation position of the footrest in the knee extension position of the body support device which is a comparative example. It is an enlarged view around the footrest in FIG. 16A.

Hereinafter, the body support device according to the embodiment of the present invention will be described with reference to FIGS. 1 to 17.
The body support device 10 is used, for example, as a medical chair. The body support device 10 can be used, for example, when the user undergoes dialysis. The body support device 10 is undulating and adjustable based on electric power, and has a so-called reclining function.

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

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

The support base 11 supports the user (user's body). The support base 11 includes a seat surface portion 21, a backrest 22, and a leg rest 23. The seat surface portion 21 supports the buttocks of the user. 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 leg rest 23 supports the user's legs.

The gantry 12 supports the support pedestal 11, the armrest 13, and the footrest 14. The gantry 12 can change the form of the support pedestal 11. The gantry 12 can change the form of the support base 11 between the chair position P1 as shown in FIGS. 1 to 4 and the bed position P2 (flat position) as shown in FIGS. 5 to 7. ..

As shown in FIGS. 1 to 4, the support base 11 in the chair position P1 supports the user in the sitting posture. In the chair position P1, the seat surface portion 21 faces upward. Further, the backrest 22 extends upward from the end of the rear side X2 of the seat surface portion 21. Further, the leg rest 23 extends from the end of the front side X1 of the seat surface portion 21 toward the diagonally lower side of the front side X1.

As shown in FIGS. 5 to 7, the support base 11 in the bed position P2 supports the user in the supine position. At bed position P2, the entire support base 11 (backrest 22, seat surface 21 and leg rest 23) extends linearly along the front-rear direction X and is substantially parallel in the horizontal direction.

In the gantry 12, the form of the support pedestal 11 may be continuously changeable between the chair position P1 and the bed position P2, or may be intermittently changeable.
The fact that the form of the support base 11 can be continuously changed between the chair position P1 and the bed position P2 means that the form of the support base 11 is changed not only to the chair position P1 and the bed position P2 but also to the chair position P1 and It means that it can be held in any intermediate position between bed positions P2.
The fact that the form of the support base 11 can be changed intermittently between the chair position P1 and the bed position P2 means that the shape of the support base 11 can be changed only to the chair position P1 and the bed position P2, or the support base 11 It means that the form can be held in a specific (for example, several points) intermediate position between the chair position P1 and the bed position P2 in addition to the chair position P1 and the bed position P2.

As shown in FIGS. 1 to 4, the armrest 13 supports the user's arm (forearm beyond the elbow) supported by the support base 11. 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 in the chair position P1.

The armrest 13 is connected to the gantry 12 via a 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 the alternate long and short dash 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 the alternate long and short dash line in FIG. 3, the first link mechanism 25 rotatably supports the armrest 13 around the first axis extending in the left-right direction Y. The armrest 13 moves toward the upper diagonal rear side X2 by being rotated upward around the first axis. As a result, the armrest 13 is prevented from getting in the way of the user when the user approaches the support base 11 from the outside or when the user gets off the support base 11.

The footrest 14 supports the toes of the user supported by the support base 11. The footrest 14 is provided on the front side X1 of the support base 11. The footrest 14 is connected to the gantry 12 via a second link mechanism 26. As shown by the alternate long and short dash line in FIG. 3, the second link mechanism 26 rotatably supports the footrest 14 around the second axis (rotation axis) S1 extending in the left-right direction Y.

When the form (position) of the support base 11 is changed between the chair position P1 and the bed position P2, the pedestal 12 has the armrest 13 and the footrest 14 via the first link mechanism 25 and the second link mechanism 26, respectively. To move. The armrest 13 and the footrest 14 are displaced in accordance with the change in the support base 11 (change in form between the chair position P1 and the bed position P2). As shown in FIGS. 5 to 7, the armrest 13 extends horizontally along the front-rear direction X while being aligned in the left-right direction Y with respect to the seat surface portion 21 in a state where the support base 11 is in the bed position P2. There is. Further, the footrest 14 projects upward from the support base 11.

The drive unit is arranged inside the gantry 12 (built into the gantry 12). The drive unit changes the form of the support base 11 via the pedestal 12 based on the input from the operation unit (not shown). The drive unit can change the form of the support base 11 as shown in FIGS. 8 to 12.

As shown in FIG. 8, the drive unit can raise and lower the backrest 22 on the support base 11 of the chair position P1. As a result, the inclination angle of the backrest 22 is changed.
As shown in FIG. 9, the drive unit can raise and lower the leg rest 23 on the support base 11 of the chair position P1. As a result, the inclination angle of the leg rest 23 is changed.

As shown in FIG. 10, the drive unit can move up and down the entire support base 11. In FIG. 10, the support base 11 at the chair position P1 is raised and lowered, but the support base 11 at the bed position P2 can also be raised and lowered.
As shown in FIG. 11, the drive unit can be changed to the support base 11 of the bed position P2 by moving the seat surface portion 21, the backrest 22 and the leg rest 23 of the support base 11 of the chair position P1 in conjunction with each other. The support base 11 in the bed position P2 can be further changed to a shock position P3 in which the support base 11 is inclined toward the rear side X2 diagonally downward side in the front-rear direction X.

As shown in FIG. 12, the drive unit can be changed to the support base 11 of the chair position P1 by moving the seat surface portion 21, the backrest 22 and the leg rest 23 of the support base 11 of the shock position P3 in conjunction with each other. In the present embodiment, the gantry 12 can change the form of the support pedestal 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 FIG. 13, the drive unit moves the leg rest 23 of the support base 11 of the chair position P1 and extends the leg rest 23 in the front-rear direction X to support the knee extension position P4 (semi-flat position). It can be changed to the stand 11. In the knee extension position P4, the backrest 22 extends in the vertical direction Z, and the seat surface portion 21 and the leg rest 23 extend in a straight line in the front-rear direction X.

Then, in the present embodiment, as shown in FIGS. 15A and 16A, the footrest 14 is rotatably supported between the uppermost end position and the lowermost end position around the second axis S1. There is.
The footrest 14 is connected to the second link mechanism 26 via a connecting bar 14a. The footrest 14 has a rectangular shape when viewed from the left-right direction Y. At the upper end of the footrest 14, an overhanging portion that protrudes in a curved shape toward the rear side X2 is formed. The connecting bars 14a are separately connected to both ends of the footrest 14 in the left-right direction Y.

As shown in FIG. 14, the second link mechanism 26 is a rotating member 27 that is connected to the second axis S1 inserted through the gantry 12 and the second axis S1 and is rotatable around the second axis S1. And have. The second axis S1 is arranged below the leg rest 23 and is connected to the upper part of the rotating member 27. The rotating member 27 is formed in a long shape extending in the left-right direction Y. The rotating member 27 is formed with a connecting piece 27a that projects downward. The connecting piece 27a is formed at the central portion of the rotating member 27 in the left-right direction Y.

The connecting bars 14a are separately connected to both side surfaces of the rotating member 27 facing outward in the left-right direction Y. The connecting bar 14a connects the rotating member 27 and the footrest 14. In the side view, the connecting bar 14a is arranged between the connecting portion with the second axis S1 and the connecting piece 27a. In the side view, the connecting bar 14a has an obtuse-angled curved shape. The connecting bar 14a may be curved at an acute angle.

One end of the expansion / contraction mechanism 28 that rotates the rotating member 27 around the second axis S1 is rotatably connected to the connecting piece 27a. The other end of the telescopic mechanism 28 is connected to the gantry 12.
When the expansion / contraction mechanism 28 expands / contracts, the expansion / contraction force is transmitted to the rotating member 27 via the connecting piece 27a, and the rotating member 27 rotates around the second axis S1. As a result, the connecting bar 14a connected to the rotating member 27 rotates around the second axis S1, so that the footrest 14 rotates between the uppermost end position and the lowermost end position around the second axis S1. ..

The footrest 14 located at the lowermost position is located below the upper surface of the legrest 23 along the thickness direction T of the legrest 23. That is, when all or most of the footrest 14 is located below the upper surface of the legrest 23 along the thickness direction T, when the user on the body support device 10 extends his / her legs, the footrest 14 is located below the upper surface of the legrest 23. The user can rest his legs on both the leg rest 23 and the foot rest 14.
As shown in FIG. 15A, the upper surface of the leg rest 23 is in an inclined state in the support base 11 of the chair position P1. At least a part of the footrest 14 located at the lowermost position is located below the upper surface of the legrest 23 along the thickness direction T of the legrest 23.
In the illustrated example, more than half of the footrest 14 in the dimension along the thickness direction T is located below the legrest 23. That is, the central portion M1 of the footrest 14 in the thickness direction T is located below the extension line L1 from the upper surface of the legrest 23 along the thickness direction T of the legrest 23.

Here, the central portion M1 of the footrest 14 in the thickness direction T is a portion of the footrest 14 located at the center of both ends along the thickness direction T, and the extension line L1 is the upper surface of the legrest 23 in the side view. Is a straight line extending to the front side X1.
The footrest 14 deforms the cushioning material by supporting the toes of the user, and the deformed portion may be located below the upper surface of the legrest 23 along the thickness direction T. desirable.
The entire footrest 14 may be located below the upper surface of the legrest 23 along the thickness direction T of the legrest 23.

The footrest 14 has a relatively equivalent positional relationship with the legrest 23 regardless of which of the chair position P1 and the knee extension position P4 the support base 11 is in.
Specifically, as shown in FIG. 16A, in the support base 11 at the knee extension position P4, the thickness direction T extends along the vertical direction Z, and the upper surface of the leg rest 23 is the front-rear direction X. Extends along. At least a part of the footrest 14 located at the lowermost position is located below the legrest 23 with respect to the upper surface of the legrest 23.
In the illustrated example, the central portion M2 of the footrest 14 in the vertical direction Z is located below the legrest 23 with respect to the extension line L1 from the upper surface of the legrest 23.
The entire footrest 14 may be located below the upper surface of the legrest 23.

Here, in order to explain the action and effect of the body support device 10 of the present embodiment, the body support device 10B of the comparative example will be described as shown in FIGS. 15 (b) and 16 (b). In the body support device 10B, the footrest 14B located at the lowermost position is located above the upper surface of the legrest 23.
Of the footrest 14B, more than half of the dimensions along the thickness direction T are located above the legrest 23.
In the illustrated example, in the chair position P1 shown in FIG. 15B, the central portion N1 of the footrest 14B in the thickness direction T is located above the upper surface of the legrest 23. Further, in the knee extension position P4 shown in FIG. 16B, the central portion N2 of the footrest 14B in the vertical direction Z is located above the upper surface of the legrest 23.

Therefore, when the user is tall, even if the footrest 14B is rotated to the lowermost position, the footrest 14B is in a state where the user lifts the legs from the upper surface of the legrest 23. It will make you feel narrow.
On the other hand, in the body support device 10 according to the present embodiment, the footrest 14 is not located above the upper surface of the legrest 23, or only a part of the footrest 14 is located above the upper surface of the legrest 23. It is located on the upper side along the thickness direction T of 23. Therefore, the user can extend the legs from the upper surface of the leg rest 23 toward the upper side of the foot rest 14 so that the toes of the user cover the foot rest 14 from above.

Further, in the present embodiment, as shown in FIGS. 15A and 16A, the footrest 14 located at the lowermost position faces the front end of the legrest 23 with a gap in the front-rear direction X. There is. The footrest 14 located at the lowermost position in the chair position P1 and the knee extension position P4 faces the front end portion of the leg rest 23 with a gap in the front-rear direction X.

As shown in FIG. 17, when the footrest 14 is located at the lowermost position, the gap in the front-rear direction X between the footrest 14 and the legrest 23 is the thickness of the footrest 14 from the upper surface of the legrest 23. It is larger than the amount of protrusion along the direction T.
That is, the dimension A in the front-rear direction X from the front end portion of the leg rest 23 to the footrest 14 is larger than the dimension B along the thickness direction T from the upper surface of the leg rest 23 to the upper end of the footrest 14. In other words, the dimension A from the front end of the leg rest 23 to the footrest 14 on the extension line L1 on the upper surface of the legrest 23 is larger than the dimension B along the thickness direction T from the extension line L1 to the upper end of the footrest 14. ing.

Further, in the present embodiment, as shown in FIGS. 15A and 16A, the footrest 14 located at the uppermost end position is located on the front side X1 of the front end portion of the leg rest 23. In the illustrated example, as shown by the alternate long and short dash line in FIG. 15A, the entire footrest 14 located at the uppermost end position of the support base 11 at the chair position P1 is vertically aligned with the front end portion on the upper surface of the legrest 23. It is located on the front side X1 of the vertical straight line L2 extending parallel to the direction Z. A part of the footrest 14 may be located on the rear side X2 of the vertical line L2 on the legrest 23. A part of the footrest 14 may be located on the rear side X2 of the vertical line L2 on the legrest 23.

Further, as shown by the alternate long and short dash line in FIG. 16A, more than half of the footrests 14 located at the uppermost position of the support base 11 at the knee extension position P4 are vertical lines L2 in the dimension along the front-rear direction X. It is located on the front side X1 of. The central portion M3 of the footrest 14 in the front-rear direction X is located on the front side X1 of the leg rest 23 from the vertical line L2, and the rear end portion of the footrest 14 is located on the rear side X2 of the vertical line L2 of the leg rest 23. ing. The entire footrest 14 may be located on the front side X1 of the vertical line L2.

As described above, according to the body support device 10 according to the present embodiment, the footrest 14 is rotatably supported by the support base 11 between the uppermost end position and the lowermost end position, so that the footrest 14 The position of can be arbitrarily adjusted with respect to the leg rest 23. Thereby, the convenience of the user can be improved. Further, when the footrest 14 is located at the lowermost position, the footrest 14 is located below the upper surface of the legrest 23 along the thickness direction T of the legrest 23, so that the user's legs may be long. However, it is possible to extend the legs from the upper surface of the leg rest 23 toward the upper side of the foot rest 14, and it is possible to prevent the toes from feeling narrow.

Further, since the footrest 14 located at the uppermost position is located on the front side X1 of the legrest 23, it is possible to prevent the toes from feeling narrow, and for example, by pressing the sole of the foot against the footrest 14, the calf can be prevented. The footrest 14 can be used for foot care such as stretching.

Further, since the footrest 14 located at the lowermost position faces the front end of the legrest 23 with a gap in the front-rear direction X, for example, the sole of the foot is placed on the footrest 14 while putting a heel in the gap. As a result, even if the footrest 14 is located below the upper surface of the legrest 23, the footrest 14 can support the toes.

The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above embodiment, the footrest 14 located at the uppermost end position is located on the front side X1 of the legrest 23, but the present invention is not limited to this aspect. The entire footrest 14 located at the uppermost position may be located on the rear side X2 of the legrest 23.

Further, in the above embodiment, the footrest 14 located at the lowermost end position is opposed to the front end portion of the legrest 23 with a gap in the front-rear direction X, but is limited to such an embodiment. Absent. The footrest 14 located at the lowermost end position may come into contact with the front end portion of the legrest 23 in the front-rear direction X without leaving a gap.

Further, in the above embodiment, the body support device 10 is provided with the armrest 13, but the present invention is not limited to this aspect. The body support device does not have to include the armrest 13.

The gantry 12 does not have to be able to change the form of the support pedestal 11.

In addition, it is possible to replace the components in the embodiment with well-known components as appropriate without departing from the spirit of the present invention, and the above-mentioned modifications may be appropriately combined.

10 Body support device 11 Support base 12 Stand 14 Footrest 23 Leg rest P1 Chair position P2 Bed position X Front-back direction X1 Front side X2 Rear side Y Left-right direction

Claims (5)

A support stand that supports the user and
A pedestal that supports the support pedestal and
A footrest that is supported by the gantry and supports the toes of the user supported by the pedestal ,
With
The support has a leg rest that supports the user's legs.
The form of the support base can be changed between a chair position that supports the user in the sitting position and a bed position that supports the user in the supine position.
The footrest is rotatably supported between the uppermost position and the lowermost position around a rotation axis extending in the left-right direction.
A body support device characterized in that , when the support base is in the chair position, the footrest located at the lowermost position is located below the upper surface of the legrest. The body support device according to claim 1, wherein the footrest located at the uppermost end position is located on the front side of the front end portion of the leg rest. The footrest located at the lowermost position faces the front end of the legrest with a gap in the front-rear direction .
The body according to claim 1 or 2 , wherein the gap in the front-rear direction between the footrest and the legrest is larger than the amount of protrusion of the footrest along the thickness direction from the upper surface of the legrest. Support device. The body according to any one of claims 1 to 3, wherein an overhanging portion that protrudes in a curved shape toward the rear side in the front-rear direction is formed at the upper end portion of the footrest. Support device. It pre-Symbol support base form, and the chair position, and the bed position, and shock position the support table is tilted toward the side obliquely downward after the front and rear direction, it is possible intermittently changed between The body support device according to any one of claims 1 to 4 , wherein the body support device is characterized.

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