JP2017225759A - Leg bottom support structure and bed apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a leg bottom support structure implementing a function of adjusting an angle of a leg bottom in a simple configuration, and a bed apparatus.SOLUTION: A leg bottom support structure 90 includes a stay 70 for adjusting an angle of a leg bottom 25, and a support member 80 for support the stay. The stay is integrally formed of: a pair of rotation support parts 71 for rotatably supporting the leg bottom; a pair of operation parts 72 extending, with their individually continued from the pair of rotation support parts; a pair of support object parts 73 individually continued from the pair of operation parts and supported by the support member; and a connection part 76 extending between the pair of support object parts and, both ends of which are individually connected to the pair of support object parts.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a foot bottom support structure and a bed apparatus.

  For example, as disclosed in Patent Document 1 below, a foot bottom support mechanism that can adjust the angle of the foot bottom while the knee bottom is raised has been conventionally used.

JP 2009-207626 A

  In the configuration of Patent Document 1, many components are used to realize the foot bottom angle adjustment function, and a foot bottom support structure with a simpler configuration is required to reduce costs.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a foot bottom support structure and a bed apparatus that realizes a foot bottom angle adjusting function with a simple configuration.

In order to solve the above problems, the present invention proposes the following means.
(1) The foot bottom support structure according to the present invention is a foot bottom support structure comprising a stay for adjusting the angle of the foot bottom and a support member for supporting the stay, wherein the stay is the foot bottom. A pair of rotation support portions that rotatably support a pair, a pair of operation portions extending separately from the pair of rotation support portions, and a pair of operation portions separately connected to the pair of operation portions and supported by the support member A supported portion and a connecting portion extending between the pair of supported portions and having both ends continuous to the pair of supported portions are integrally formed.

  According to the foot bottom support structure of the present invention, by a simple configuration using a stay in which a pair of rotation support parts, a pair of operation parts, a pair of supported parts, and a connection part are integrally formed. The foot bottom angle adjustment function can be realized.

(2) In the foot bottom support structure according to the above (1), the pair of rotation support portions, the pair of operation portions, the pair of supported portions, and the connection portion each have a cross section having an equivalent size. You may have.

  In this case, for example, the stay can be formed by bending a rod, and the manufacturing cost can be reduced as compared with the case where a mold is used or the stay is formed by welding a plurality of components. .

(3) In the foot bottom support structure according to (1) or (2), the stay may be formed in a bent bar shape.

  In this case, for example, the stay can be formed by bending a rod, and the manufacturing cost can be reduced as compared with the case where a mold is used or the stay is formed by welding a plurality of components. .

(4) In the foot bottom support structure according to any one of (1) to (3) above, the stay has a C-shape when the pair of operation portions extend from the pair of supported portions to the same side. It may be formed.

  In this case, it becomes easy to elastically deform the stay so that the pair of rotation support portions come close to each other, and for example, workability when attaching the stay to the foot bottom can be improved.

(5) In the foot bottom support structure according to any one of (1) to (4), the support member may include an upper restricting portion that restricts upward movement of the stay.

  In this case, since the upward restricting portion of the support member restricts the upward movement of the stay, the upward movement of the foot bottom can also be restricted through the rotation support portion of the stay. As a result, for example, when the foot bottom is vigorously moved upward, it is possible to prevent the stay from being removed from the support member and the foot bottom from being excessively moved upward.

  The bed apparatus according to the present invention is a bed apparatus having a foot bottom that supports a toe from a user's knee, and a foot bottom support structure that supports the foot bottom and can adjust an angle thereof. The structure is a foot bottom support structure according to any one of (1) to (5) above.

  According to the bed apparatus of the present invention, the foot bottom angle adjusting function can be realized with a simple configuration.

  ADVANTAGE OF THE INVENTION According to this invention, the support structure and bed apparatus of a foot bottom which implement | achieve the angle adjustment function of a foot bottom with a simple structure can be provided.

It is a perspective view of the bed apparatus concerning one embodiment of the present invention. It is a side view of the bed apparatus shown in FIG. It is a top view of the bed apparatus shown in FIG. It is a bottom view of the bed apparatus shown in FIG. It is a side view which shows the state which raised the bed in the bed apparatus shown in FIG. It is a perspective view which shows the state which rotated the back bottom and the leg bottom in the bed apparatus shown in FIG. It is a perspective view of a part including a main frame in the bed apparatus shown in FIG. It is a perspective view of a stay concerning one embodiment of the present invention. It is a bottom view of a part including a foot bottom support structure among the bed apparatuses shown in FIG. FIG. 3 is a side view of a part of the bed apparatus shown in FIG. 2 including a foot bottom support structure, and shows a state in which a knee bottom is rotated. In the bed apparatus shown in FIG. 10, it is a figure which shows the state which operated the stay and changed the angle of the foot bottom.

  A bed apparatus 10 according to an embodiment of the present invention will be described below with reference to FIGS. The couch device 10 can be used as, for example, a general floor couch device or an ICU couch device in a medical environment (including a care environment). In FIGS. 1 to 11, an arrow H indicates a direction that becomes the head side H when the person (user) sleeps, and an arrow F indicates a direction that becomes the foot side F when the person sleeps. In the following description, the horizontal direction orthogonal to the front-rear direction, which is the direction of arrows H and F, may be referred to as the left-right direction. The front-rear direction and the left-right direction are both directions along the horizontal direction.

As shown in FIGS. 1 to 6, the bed apparatus 10 includes a bed 11, a support frame 12, side rails 13 a and 13 b, a board 14, an option 15, a drive mechanism 16, and a foot bottom support structure 90. It is equipped with. The bed apparatus 10 is a so-called electric bed apparatus (gatch bed) using electric power as a power source.
The bed 11 is longer in the front-rear direction than in the left-right direction when viewed in plan. The longitudinal direction of the bed 11 is the front-rear direction, and the short direction of the bed 11 is the left-right direction. A mattress (not shown) is disposed on the bed 11. A user lies on the bed 11 via the mattress.

  The bed 11 includes a back bottom 21, a waist bottom 22, and a leg bottom 23. These back bottom 21, waist bottom 22 and leg bottom 23 are arranged in this order from the head side H to the foot side F. The back bottom 21 supports the back of the user. The waist bottom 22 supports the user's waist. The leg bottom 23 supports a user's leg.

(Support stand)
The support frame 12 supports the bed 11. The support frame 12 receives the loads of the bed 11 and the users on the bed 11. As shown in FIGS. 2 and 4, the support frame 12 includes a base frame 31, a main frame 32, and an elevating mechanism 33.
The base frame 31 has a rectangular shape in plan view. The base frame 31 includes a first vertical member 34 extending in the front-rear direction, a first horizontal member 35 extending in the left-right direction, and a grounding portion 36 that contacts the grounding surface.

A pair of the first vertical members 34 are provided at intervals in the left-right direction.
The first horizontal member 35 is constructed between a pair of left and right first vertical members 34. The first horizontal member 35 connects the pair of left and right first vertical members 34 in the left-right direction. A pair of first lateral members 35 are provided at intervals in the front-rear direction. The first horizontal member 35 is fixed to the first vertical member 34 so as not to move. The first horizontal member 35 is welded (fixed) to the first vertical member 34.

  The grounding portion 36 is provided at an end portion in the front-rear direction of the first vertical member 34. An end portion in the front-rear direction of the first vertical member 34 protrudes outward in the front-rear direction from the first horizontal member 35. In the illustrated example, a caster is employed as the grounding portion 36, but a rubber cover may be employed in place of the caster.

  The main frame 32 supports the bed 11. The main frame 32 has a rectangular shape in plan view. The main frame 32 includes a second vertical member 37 extending in the front-rear direction, a second horizontal member 38 extending in the left-right direction, and an option mounting portion 39 for attaching the option 15.

A pair of the second vertical members 37 are provided at intervals in the left-right direction.
The second horizontal member 38 connects the pair of left and right second vertical members 37 in the left-right direction. A pair of the second lateral members 38 are provided at intervals in the front-rear direction. The second horizontal member 38 is fixed to the second vertical member 37 so as not to move. The second transverse member 38 is welded (fixed) to the second longitudinal member 37. An end portion in the left-right direction of the second horizontal member 38 protrudes in the left-right direction from the second vertical member 37.
The option attachment portion 39 is provided at the end portion of the second lateral member 38 in the left-right direction.

  As shown in FIGS. 4 and 5, the elevating mechanism 33 connects the main frame 32 to the base frame 31 so as to be movable up and down. The lifting mechanism 33 includes a pair of front and rear lifting units 40. A pair of raising / lowering units 40 are arrange | positioned so that the waist bottom 22 may be pinched | interposed in the front-back direction. Each lifting unit 40 includes a pair of left and right link mechanisms 41 and a connecting member 42 that connects the pair of left and right link mechanisms 41. As the pair of front and rear lifting units 40 operate in parallel, the lifting mechanism 33 moves the bed 11 up and down.

  As shown in FIGS. 1 and 6, the support frame 12 supports a back bottom 21 and a leg bottom 23 in a freely rotatable manner. In this embodiment, the waist bottom 22 is fixed to the support base 12, and the back bottom 21 and the leg bottom 23 are rotatably coupled to the waist bottom 22 via a bottom hinge 64d and a bottom hinge 64e, which will be described later.

  The boards 14 are disposed at both ends of the support frame 12 in the front-rear direction. The board 14 is formed in a plate shape whose front and back faces in the front-rear direction. The board 14 is detachably attached to the support base 12. The board 14 includes a head board 14 a located on the head side H and a foot board 14 b located on the foot side F.

(Side fence)
The side rails 13a and 13b are arranged at the end portions in the left-right direction of the support frame 12. In the present embodiment, the side rails 13 a and 13 b are disposed on both sides in the left-right direction with respect to the support base 12. The side fences 13a and 13b are arranged at intervals in the front-rear direction. The side fences 13a and 13b are connected to the support frame 12 so as to be movable up and down.

The side fences 13a and 13b are arranged so as to be biased toward the head side H along the front-rear direction. In the side view of the bed apparatus 10 as viewed from the left and right directions, the side rails 13a and 13b are close to the head board 14a and separated from the foot board 14b.
The option 15 is detachably attached to the option attachment portion 39. In this embodiment, a spacer 15 a is provided as an option 15. The spacer 15a closes the space between the side fence 13b and the foot board 14b in the side view.

(Drive mechanism)
The drive mechanism 16 rotates the back bottom 21 and the leg bottom 23 based on an operation of a button or the like (not shown). Moreover, the drive mechanism 16 raises / lowers the bed 11 based on operation of a button etc. which are not shown in figure.
The drive mechanism 16 includes a lift drive mechanism 51 that moves the bed 11 up and down, and a rotation drive mechanism 52 that rotates the back bottom 21 or the leg bottom 23.
As shown in FIG. 4, the elevation drive mechanism 51 and the rotation drive mechanism 52 are attached to the support frame 12. The elevation drive mechanism 51 and the rotation drive mechanism 52 are disposed below the bed 11. The elevation drive mechanism 51 and the rotation drive mechanism 52 are linear motion actuators that expand and contract in the front-rear direction.

  The elevating drive mechanism 51 transmits a driving force to the elevating mechanism 33 to raise and lower the main frame 32 relative to the base frame 31. A pair of lifting drive mechanisms 51 are provided in the front-rear direction. The pair of elevating drive mechanisms 51 are disposed at the center in the left-right direction of the bed 11.

  Both ends in the front-rear direction of each elevating drive mechanism 51 are attached to the main frame 32 and the elevating unit 40, respectively. In the head-side H elevating drive mechanism 51, the end on the head side H is attached to the elevating unit 40 on the head side H, and the end on the foot side F is attached to the main frame 32. In the foot-side F elevating drive mechanism 51, the end of the foot side F is attached to the elevating unit 40 of the foot side F, and the end of the head side H is attached to the main frame 32.

  The rotation drive mechanism 52 includes a first drive mechanism 53 that rotates the back bottom 21 and a second drive mechanism 54 that rotates the leg bottom 23. The 1st drive mechanism 53 and the 2nd drive mechanism 54 are arrange | positioned so that the raising / lowering drive mechanism 51 may be pinched | interposed in the left-right direction. Both ends of the first drive mechanism 53 and the second drive mechanism 54 in the front-rear direction are attached to the support base 12 and the back bottom 21 or the leg bottom 23, respectively.

  In the present embodiment, the support base 12 is provided with an attachment member 43 to which end portions in the front-rear direction of the first drive mechanism 53 and the second drive mechanism 54 are attached in common. The attachment member 43 is installed between the second vertical members 37 in the left-right direction. The attachment member 43 is disposed on the foot side F with respect to the waist bottom 22. The ends of the foot side F in the front-rear direction of the first drive mechanism 53 and the second drive mechanism 54 are both attached to the attachment member 43. Thereby, for example, the structure is simplified as compared with the case where the first drive mechanism 53 and the second drive mechanism 54 are attached to separate members of the support base 12.

(Waist bottom)
As shown in FIG. 7, the waist bottom 22 includes a pair of fixing members 61, a connecting member 62, a bottom plate 63, and a pair of side members 64. The pair of fixing members 61 are arranged on the support frame 12 with a space therebetween and are fixed to the support frame 12. Each fixing member 61 extends in the left-right direction. The pair of fixing members 61 are arranged at intervals in the front-rear direction. Each fixing member 61 is installed on a pair of left and right second vertical members 37. The left and right ends of each fixing member 61 protrude from the pair of left and right second vertical members 37 toward the outside in the left and right direction. Each fixing member 61 is welded (fixed) to the second vertical member 37. The fixing member 61 is a pipe (tubular). The shape of the fixing member 61 viewed from the left-right direction is a rectangular shape.

  The connecting member 62 is disposed between the pair of fixing members 61 and connects the pair of fixing members 61. A plurality of connecting members 62 are provided at intervals. In the present embodiment, a pair of the connecting members 62 are arranged at intervals in the left-right direction. The connecting member 62 connects the pair of fixing members 61 in the front-rear direction. Both ends of the connecting material 62 in the front-rear direction are welded (fixed) to the fixing material 61.

  The pair of connecting members 62 are disposed at the center in the left-right direction of the pair of fixing members 61. Each connecting member 62 is formed in the same shape and the same size. The connecting material 62 is a plate (plate shape). The connecting member 62 extends along an orthogonal plane orthogonal to the left-right direction. The connecting material 62 is longer in the front-rear direction than in the up-down direction.

  The connecting member 62 includes a main body plate 65 and a protruding plate 66. The main body plate 65 is formed in a rectangular shape that is long in the front-rear direction in the front view of the main body plate 65. The upper and lower edges of the main body plate 65 are respectively disposed at equal positions in the vertical direction with respect to the upper and lower surfaces of the connecting member 62. The front and rear end edges of the main body plate 65 are welded (fixed) to the fixing member 61.

  The protruding plate 66 protrudes downward from the main body plate 65. The protruding plate 66 is disposed at the end of the main plate 65 on the foot side F. The protruding plate 66 is formed in a rectangular shape when the protruding plate 66 is viewed from the front. The protruding plate 66 is smaller than the main body plate 65 in the front-rear direction.

  The bottom plate 63 covers the pair of fixing members 61 and the connecting member 62 and is fixed to the pair of fixing members 61. The bottom plate 63 covers the pair of fixing members 61 and the connecting member 62 from above. The bottom plate 63 is formed in a rectangular shape that is long in the left-right direction when the bottom plate 63 is viewed from the front. The size of the bottom plate 63 in the left-right direction is the same as the size of the fixing member 61 in the left-right direction. End portions of the bottom plate 63 in the front-rear direction are disposed on the pair of fixing members 61 and fixed to the fixing member 61. The upper edge of the main body plate 65 is abutted against the lower surface of the bottom plate 63.

The pair of side members 64 are disposed at both ends of the bottom plate 63 in the left-right direction. In the present embodiment, one side member 64 is opposed to the side rails 13a and 13b in the vertical direction. The pair of side members 64 extends along an orthogonal plane orthogonal to the left-right direction. The pair of side members 64 connects the ends of the pair of fixing members 61. The pair of side members 64 are welded (fixed) to the fixing member 61.
The pair of side members 64 have the same shape and the same size. The side material 64 is a plate (plate shape). The side material 64 is formed by, for example, pressing a steel plate. The side material 64 is longer in the front-rear direction than in the vertical direction. The side member 64 is longer in the front-rear direction than the connecting member 62 and the bottom plate 63.

The side member 64 includes a mattress regulating portion 64a, a pair of bag holding portions 64b, a belt receiving portion 64c, and bottom hinges 64d and 64e.
The mattress restricting portion 64a extends upward from the mattress placement surface of the bottom plate 63. The mattress restricting portion 64a restricts the position of the mattress (not shown) placed on the bottom plate 63 in the left-right direction. The distance between the mattress regulating portion 64a and the side rails 13a and 13b is, for example, less than 60 mm. The distance between the mattress regulating portion 64a and the side rails 13a and 13b satisfies the requirements defined in the IEC standard.

  Each bag holding portion 64b is formed in a hook shape having a beam portion that extends in a cantilever shape in the left-right direction and a protruding portion that protrudes upward from the tip of the beam portion. A urine collection bag (not shown) or the like can be hung and held on each bag holding portion 64b. The belt receiving portion 64c penetrates the side member 64 in the left-right direction, and is formed in an elongated round hole shape that is long in the front-rear direction. A belt (not shown) is inserted into the belt receiving portion 64c and its position is regulated. The bottom hinges 64d and 64e are through holes that penetrate the side member 64 in the left-right direction. The bottom hinge 64d is the center of rotation of the back bottom 21. The bottom hinge 64e is the center of rotation of the knee bottom 24.

(Back bottom)
As shown in FIG. 1, connecting plates 68 are fixed to the left and right ends of the back bottom 21. The connecting plate 68 is formed with a through hole penetrating the connecting plate 68 in the left-right direction. By inserting the through hole of the connecting plate 68 and the bottom hinge 64d of the side member 64 with a common pin, the back bottom 21 rotates in the vertical direction around the bottom hinge 64d.

  As shown in FIG. 1, FIG. 3, etc., the back bottom 21 has a plurality of vent holes 21a and a plurality of belt receiving portions 21b. Each air hole 21a and each belt receiving portion 21b penetrates the back bottom 21 in the vertical direction. Each belt receiving portion 21 b is disposed in the vicinity of the outer peripheral edge of the back bottom 21. Each air hole 21a is disposed in a portion of the back bottom 21 that is inside the belt receiving portion 21b. A belt (not shown) is inserted into each of the plurality of belt receiving portions 21b, and the position is regulated. The belt inserted through the belt receiving portion 21b may be the same as the belt inserted through the belt receiving portion 64c of the side member 64.

(Leg bottom)
As shown in FIG. 1, the leg bottom 23 includes a knee bottom 24 and a foot bottom 25. The knee bottom 24 and the foot bottom 25 are arranged in this order from the head side H to the foot side F. The knee bottom 24 supports the waist from the user's knee. The foot bottom 25 supports the foot tip from the user's knee.
The knee bottom 24 and the foot bottom 25 are connected so as to be rotatable around a bending shaft 27 extending in the left-right direction. Therefore, when the knee bottom 24 rotates around the bottom hinge 64e, the leg bottom 23 bends upward so that the bending shaft 27 forms a vertex.

  Knee bottom support plates 69 are fixed to the left and right ends of the knee bottom 24, respectively. The knee bottom support plate 69 is formed with a through hole penetrating the knee bottom support plate 69 in the left-right direction. Since the through hole of the knee bottom support plate 69 and the bottom hinge 64e of the side member 64 are inserted by a common pin, the knee bottom 24 rotates in the vertical direction around the bottom hinge 64e.

As shown in FIGS. 3 and 9, the foot bottom 25 has an outer frame 25a and a foot bottom plate 25b. The outer frame 25a is formed in a C-shape that opens toward the head side H when viewed from the vertical direction. The outer frame 25a is a pipe (tubular). The foot bottom plate 25b covers the outer frame 25a from above.
As shown in FIGS. 1 and 9, foot bottom support plates 67 are fixed to the left and right ends of the foot bottom 25, respectively. The foot bottom support plate 67 supports the foot bottom 25. The distance between the foot bottom support plate 67 and the side fence 13b is, for example, less than 60 mm. The distance between the foot bottom support plate 67 and the side fence 13b satisfies the requirements defined in the IEC standard.
As shown in FIG. 3, two sliding members 28 are attached to the foot side F end of the foot bottom 25. The sliding member 28 is formed of a material having excellent slidability such as industrial resin.

  As shown in FIG. 10, the sliding member 28 includes a mattress regulating portion 28a, an attachment portion 28b, and a sliding surface 28c. The attachment portion 28b is formed in a U shape in a side view, and sandwiches the foot bottom 25. The mattress restricting portion 28a extends upward from the end portion on the foot side F of the upper surface of the attachment portion 28b. The mattress restricting portion 28a extends upward from the mattress placement surface of the foot bottom 25. The sliding surface 28c is the lower surface of the attachment portion 28b.

(Foot bottom support structure)
The foot bottom support structure 90 supports the foot bottom 25. The foot bottom support structure 90 can adjust the inclination angle of the foot bottom 25 with respect to the horizontal direction around the bending axis 27. As shown in FIG. 9, the foot bottom support structure 90 includes a stay 70 for adjusting the angle of the foot bottom 25, and a pair of support members 80 that support the stay 70. The pair of support members 80 are welded (fixed) to the pair of second vertical members 37 of the main frame 32, respectively.
As shown in FIG. 8, the stay 70 includes a pair of rotation support portions 71, a pair of operation portions 72, a pair of supported portions 73, and a connecting portion 76.
The stay 70 is formed in a bent round bar shape. Of the stay 70, the pair of rotation support portions 71, the pair of operation portions 72, the pair of supported portions 73, and the connecting portion 76 are connected to each other through bent portions. Each portion of the stay 70 has a circular cross section having the same size. The stay 70 can be integrally formed by bending a round bar.

  As shown in FIG. 9, each of the pair of rotation support portions 71 extends in the left-right direction. The pair of rotation support portions 71 are rotatably inserted into a pair of attachment holes (not shown) formed in the outer frame 25a of the foot bottom 25, respectively. Thereby, a pair of rotation support part 71 is supporting the leg bottom 25 rotatably. Each of the pair of operation units 72 extends in the front-rear direction. Each of the pair of operation units 72 gradually extends inward in the left-right direction as it goes toward the head side H. The end portions on the foot side F in the pair of operation portions 72 are respectively connected to the inner end portions in the left-right direction of the pair of rotation support portions 71 through bent portions. Each of the pair of supported portions 73 extends in the left-right direction. The outer ends of the pair of supported portions 73 in the left-right direction are respectively connected to the head-side H ends of the pair of operation portions 72 via bent portions. The pair of supported portions 73 are respectively supported by the pair of support members 80. The connecting portion 76 extends in the left-right direction. The connecting portion 76 extends between the pair of supported portions 73, and both end portions in the left-right direction are connected to inner ends in the left-right direction of the supported portion 73 via bent portions, respectively.

  As shown in FIG. 8, the connecting portion 76 includes a horizontal connecting portion 75 extending in the left-right direction and a pair of vertical connecting portions 74 extending in the up-down direction. The upper ends of the pair of vertical connecting portions 74 are respectively connected to the left and right end portions of the horizontal connecting portion 75 via bent portions. The lower ends of the pair of vertical connecting portions 74 are respectively connected to the inner ends in the left-right direction of the pair of supported portions 73 via bent portions. Note that the left and right ends of the horizontal connecting portion 75 may be directly connected to the pair of supported portions 73 without using the vertical connecting portion 74.

As shown in FIG. 9, each of the pair of operation portions 72 extends from the pair of supported portions 73 toward the foot side F. Accordingly, the stay 70 is formed in a C shape that opens toward the foot side F in a plan view as viewed from above and below, and is easily elastically deformed so that the pair of rotation support portions 71 approach each other in the left-right direction. .
When attaching the stay 70 to the outer frame 25a of the foot bottom 25, the operating portion 72 is grasped, and the stay 70 is elastically deformed so that the pair of rotation support portions 71 approach each other in the left-right direction. Then, the pair of rotation support portions 71 are inserted through the pair of attachment holes of the outer frame 25a, respectively. When the operation part 72 is released, the rotation support parts 71 are separated from each other by the restoring force of the elastically deformed stay 70, and the attachment is completed.

As shown in FIG. 10, the support member 80 includes an upper restriction portion 81, a rising wall 82, a first support portion 83, a first contact portion 84, an inclined portion 85, and a second support portion 86. , And a second contact portion 87, which are integrally formed. In the present embodiment, the support member 80 is formed by pressing a steel plate or the like.
The upper restricting portion 81 is disposed above the supported portion 73 of the stay 70. The upper restricting portion 81 extends in the front-rear direction. The upper restricting portion 81 restricts the upward movement of the stay 70. The rising wall 82 extends downward from the foot side F end of the upper restricting portion 81. The first support portion 83 extends from the lower end portion of the rising wall 82 toward the head side H. An end portion on the head side H of the upper restricting portion 81 is located closer to the foot side F than an end portion on the head side H of the first support portion 83. The first contact portion 84 extends upward from the end portion on the head side H of the first support portion 83. The inclined portion 85 is connected to the upper end portion of the first contact portion 84 via a curved surface portion that protrudes upward. The inclined portion 85 gradually extends downward toward the head side H. The second support portion 86 extends from the lower end portion of the inclined portion 85 toward the head side H. The second contact portion 87 extends upward from the end portion on the head side H of the second support portion 86. The second contact portion 87 is disposed on the head side H with respect to the first contact portion 84.

  Next, the operation of the foot bottom support structure 90 configured as described above will be described.

When the second drive mechanism 54 is driven, the knee bottom 24 rotates about the bottom hinge 64e. In conjunction with this, the foot bottom 25 rotates around the bending shaft 27 as shown in FIG. Since the foot bottom 25 and the stay 70 are connected via the rotation support portion 71, the stay 70 rotates in conjunction with the foot bottom 25. More specifically, when the rotation support portion 71 is pulled upward, the stay 70 rotates upward about the supported portion 73. As a result, the stay 70 is inclined in a posture in which the operation unit 72 gradually moves upward as the operation unit 72 moves toward the foot side F. At this time, the load on the foot bottom 25 and the human foot is supported by the support member 80 via the stay 70.
The force transmitted to the support member 80 via the stay 70 (hereinafter referred to as support force) has a downward component and a head H direction component. Due to the support force, the supported portion 73 comes into contact with the first support portion 83 and the first contact portion 84. The movement of the supported portion 73 toward the head side H is regulated by the first contact portion 84. A component in the head H direction of the support force is supported by the first contact portion 84. The downward component of the support force is supported by the first support portion 83.

In the case of adjusting the angle of the foot bottom 25 from the state of FIG. 10, the operation part 72 is grasped and the supported part 73 is moved upward. When the supported portion 73 passes above the upper end portion of the first contact portion 84, the supported portion 73 can move to the head side H beyond the first contact portion 84. When the supported portion 73 is released from the operation portion 72 in a state where the supported portion 73 is located on the head side H with respect to the first contact portion 84, the supported portion 73 slides on the inclined portion 85, for example. The part 73 moves to the head side H. The supported portion 73 comes into contact with the second support portion 86 and the second contact portion 87 by the support force, and is in the state shown in FIG. In this way, the foot bottom 25 rotates around the bending shaft 27 so that the end of the foot side F descends.
In the state of FIG. 11, the movement of the supported portion 73 toward the head side H is restricted by the second contact portion 87. A component in the head H direction of the supporting force is supported by the second contact portion 87. The downward component of the support force is supported by the second support portion 86.

  As shown in FIGS. 10 and 11, when the supported portion 73 is in contact with the second contact portion 87, the foot bottom 25 is not in contact with the first contact portion 84. The height of the end of the foot side F is low. This is because the distance in the front-rear direction from the rotation support part 71 to the second contact part 87 is larger than the distance in the front-rear direction from the rotation support part 71 to the first contact part 84. Thus, in the present embodiment, the angle of the foot bottom 25 can be easily adjusted by changing the position of the supported portion 73 in the front-rear direction.

  As described above, according to the foot bottom support structure 90 of the present embodiment, the pair of rotation support parts 71, the pair of operation parts 72, the pair of supported parts 73, and the connecting part 76 are integrally formed. The angle adjusting function of the foot bottom 25 can be realized with a simple configuration using the formed stay 70.

  In addition, the pair of rotation support portions 71, the pair of operation portions 72, the pair of supported portions 73, and the connecting portion 76 are each formed in a straight or bent round bar shape, and are circular in the same size. Has a cross section. For this reason, it is possible to shape the stay 70 by bending a round bar. Thereby, for example, compared with the case where a mold or the like is used, or when the stay 70 is formed by welding a plurality of components, the manufacturing cost can be reduced.

  In addition, since the stay 70 is formed in a C shape, the stay 70 is easily elastically deformed so that the pair of rotation support portions 71 come close to each other, and workability when attaching the stay 70 to the foot bottom 25 is improved. Can be improved.

  In addition, since the upper restricting portion 81 of the support member 80 restricts the upward movement of the stay 70, the upward movement of the foot bottom 25 can also be restricted via the rotation support portion 71 of the stay 70. As a result, for example, when the foot bottom 25 is vigorously moved upward, it is possible to prevent the stay 70 from being detached from the support member 80 and the foot bottom 25 from being excessively moved upward.

  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, the board 14 and the option 15 may be omitted.
Further, a resin cover that covers the supported portion 73 may be attached to the stay 70 in order to prevent the supported portion 73 of the stay 70 and the support member 80 from rubbing and peeling off the coating.
In the above embodiment, the support member 80 includes the first contact portion 84 and the second contact portion 87, so that the angle of the foot bottom 25 can be adjusted in two steps. Not limited to. For example, in addition to the first contact portion 84 and the second contact portion 87, contact portions having different positions in the front-rear direction may be provided so that the angle of the foot bottom 25 can be adjusted in three or more stages.
Moreover, in the said embodiment, although the stay 70 formed in the shape of the bent round bar was used, it is not restricted to this. For example, a stay 70 in which each portion has a non-circular (square, elliptical, etc.) cross section may be used. In this case, the stay 70 may be formed by bending a rod having a non-circular cross section, such as a square rod or an oval rod.

Moreover, in the said embodiment, although the back bottom 21 and the leg bottom 23 were made into the movable bottom which rotates, and the raising / lowering mechanism 33 which raises / lowers the bed 11 was employ | adopted, the 4ACT (4 motor) gatch bed was employ | adopted. The invention is not limited to this. For example, it is also possible to employ a 3ACT (3-motor) gatch bed in which only the leg bottom 23 rotates.
Furthermore, the present invention is not limited to application to an electrically operated gatch bed. The present invention can also be applied to a manual type gatch bed in which the driving mechanism 16 is powered by human power.
In addition, the constituent elements in the above-described embodiments may be replaced with well-known constituent elements without departing from the gist of the present invention.

  DESCRIPTION OF SYMBOLS 10 ... Bed apparatus, 25 ... Leg bottom, 70 ... Stay, 71 ... Rotation support part, 72 ... Operation part, 73 ... Supported part, 76 ... Connection part, 80 ... Support member, 81 ... Upper control part, 90 ... Leg Bottom support structure

Claims (6)

In a foot bottom support structure comprising a stay for adjusting the angle of the foot bottom and a support member for supporting the stay,
The stay
A pair of rotation support portions for rotatably supporting the foot bottom;
A pair of operation portions extending separately from each other to the pair of rotation support portions;
A pair of supported parts connected to the pair of operation parts separately and supported by the support member;
A connecting portion extending between the pair of supported portions and having both ends continuous to the pair of supported portions;
A foot bottom support structure characterized in that is integrally formed.   2. The foot bottom support according to claim 1, wherein each of the pair of rotation support portions, the pair of operation portions, the pair of supported portions, and the connection portion has a cross section having an equivalent size. Construction.   The foot bottom support structure according to claim 1 or 2, wherein the stay is formed in a bent bar shape.   The foot according to any one of claims 1 to 3, wherein the stay is formed in a C shape by the pair of operation portions extending from the pair of supported portions to the same side. Bottom support structure.   The foot bottom support structure according to any one of claims 1 to 4, wherein the support member includes an upper restricting portion that restricts the upward movement of the stay. A foot bottom that supports the toes from the user's knees;
In a bed apparatus having a foot bottom support structure that supports the foot bottom and can adjust the angle thereof,
6. The bed apparatus according to claim 1, wherein the foot bottom support structure is the foot bottom support structure according to any one of claims 1 to 5.

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