CN112842730A

CN112842730A - Bed device

Info

Publication number: CN112842730A
Application number: CN202110016895.8A
Authority: CN
Inventors: 江口正芳
Original assignee: Paramount Bed Co Ltd
Current assignee: Paramount Bed Co Ltd
Priority date: 2016-06-24
Filing date: 2017-06-14
Publication date: 2021-05-28
Anticipated expiration: 2037-06-14
Also published as: CN109310213A; JP6711707B2; MX2018014144A; CN112842730B; CN109310213B; WO2017221786A1; JP2017225761A

Abstract

The invention provides a bed structure member and a bed device. The bed structure member constitutes at least a part of a bed supported by a support frame, is fixed to the support frame, and has a drive mechanism attached thereto, and includes: a pair of fixing members that are disposed on the support frame at an interval and fixed to the support frame; and a coupling member that couples the pair of fixing members.

Description

Bed device

This application is a divisional application of the following patent applications:

application No.: 201780029227.0

Application date: 2017, 06 and 14 months

The invention name is as follows: bed structure member and bed device

Technical Field

The present invention relates to a bed structure member and a bed device.

This application is based on the priority claim of Japanese application No. 2016-.

Background

Conventionally, a bed device described in, for example, patent document 1 below is known. The bed device is provided with: the bed, a support stand for supporting the bed, and a drive mechanism attached to the support stand. In the bed device, when the driving mechanism operates, an external force such as a driving force or a driving reaction force is transmitted to a portion of the support frame to which the driving mechanism is attached, and stress is generated in the attached portion.

Patent document 1: japanese patent laid-open publication No. 2005-87652

However, in the conventional bed device, in order to increase the strength against the stress at the mounting portion, it is necessary to provide a reinforcement or the like for reinforcing the mounting portion, to increase the number of components, and the like, and the structure of the bed device is likely to be complicated.

Disclosure of Invention

The present invention has been made in view of the above circumstances, and an object thereof is to form a bed device simply and stably.

In order to solve the above problems, the present invention proposes the following means.

(1) A bed structure member according to the present invention constitutes at least a part of a bed supported by a support frame, the bed structure member being fixed to the support frame and having a drive mechanism attached thereto, the bed structure member comprising: a pair of fixing members which are disposed on the support frame at intervals and fixed to the support frame; and a coupling member that couples the pair of fixing members.

According to the invention, the external force from the drive mechanism is transmitted to the bed structure part when the drive mechanism is in operation. At this time, stress is generated in a portion where the fixing member and the support frame are fixed (hereinafter, referred to as a "fixing portion"). Here, in the bed structure member, a pair of fixing pieces is provided, and the coupling member couples the pair of fixing pieces. Therefore, the external force transmitted from the driving machine to the bed structural member is dispersed to the pair of fixing members by the link. Therefore, the stress generated in the fixing portion can be dispersed to the fixing portion of each of the pair of fixtures. This makes it possible to fix the stator directly to the support frame, for example, without fixing the stator to the support frame via the reinforcement. As a result, for example, the number of components of the bed device can be reduced, and the bed device can be formed easily and stably. If the number of components of the bed device can be reduced, for example, the coating cost for coating the bed device can be reduced. As described above, the bed device can be manufactured at low cost.

(2) In the bed structure member according to the above (1), the following structure may be adopted: the link is capable of mounting the drive mechanism.

In this case, the coupling can be equipped with the drive mechanism. Therefore, the external force transmitted from the drive mechanism to the bed structural member is effectively dispersed to the pair of fixing members by the coupling member. This makes it possible to reliably distribute the stress generated at the fixing portion to the fixing portion of each of the pair of fixing members.

The coupling member can be attached with the driving mechanism, and the coupling member has not only a function of dispersing the external force but also an attaching function of the driving mechanism. This makes it possible to reliably reduce the number of components and to manufacture the bed device at a lower cost.

(3) In the bed structure member according to the above (1) or (2), the following structure may be adopted: the bed structure member further includes a covering member that covers the pair of fixing members and the coupling member and is fixed to the pair of fixing members.

In this case, the covering member is fixed to the pair of fixing members. Therefore, for example, when an external force from the drive mechanism is transmitted to the bed structural member, the relative displacement between the pair of fixing members can be restricted by the covering member. This can effectively suppress the stress generated in the fixing portion.

And, the covering member covers the pair of fixing members and the coupling member. Therefore, for example, the mattress on the bed can be supported by the cover without being in contact with the anchor and the coupler. Thereby, the mattress can be stably supported.

(4) In the bed structure member according to any one of the above (1) to (3), the following structure may be adopted: the bed structure member further includes a side member extending along the coupling member and coupling end portions of the pair of fixing members to each other.

In this case, the side member connects the end portions of the pair of fixing members to each other. Therefore, for example, when an external force from the drive mechanism is transmitted to the bed structure member, the side member can restrict relative displacement between the pair of fixing members. This can effectively suppress the stress generated in the fixing portion.

(5) In the bed structure member according to any one of the above (1) to (4), the following structure may be adopted: a plurality of said drive mechanisms can be mounted.

In this case, the bed structural member can be mounted with a plurality of drive mechanisms. Therefore, the above-described stress dispersion effect can be remarkably exhibited.

(6) The bed device according to the present invention is characterized by comprising: a bed; a support stand that supports the bed; and a drive mechanism attached to the support frame, wherein at least a part of the bed is formed of any one of the bed structural members (1) to (5), and the drive mechanism is attached to the support frame via the bed structural member.

In this case, the bed device can be formed simply and stably.

(7) In the bed device according to the above (6), the following configuration may be adopted: the bed structure component forms at least a portion of the lumbar pan.

In this case, the bed structure component forms at least a part of the lumbar pan. Therefore, the waist bottom plate is fixed to the support frame so as to be substantially immovable, and the external force transmitted from the drive mechanism to the bed structural member can be stably transmitted to the support frame via the bed structural member.

(8) In the bed device according to the above (6) or (7), the following configuration may be adopted: the support stand includes: a base frame having a ground portion; a main frame to which the bed structure member is fixed; and a lifting mechanism that connects the main frame to the base frame so as to be freely lifted and lowered with respect to the base frame, wherein the driving mechanism includes a lifting driving mechanism that transmits a driving force to the lifting mechanism to lift and lower the main frame with respect to the base frame, and the lifting driving mechanism is attached to the bed structure member.

In this case, the lifting drive mechanism lifts and lowers the main frame relative to the base frame. The main frame is loaded by a user from the bed. Therefore, the elevation drive mechanism particularly plays a large role in a drive mechanism that is supposed to be applied to a bed device. Since such a lifting drive mechanism is attached to the bed structural member, the above-described stress dispersion effect can be remarkably exhibited.

(9) In the bed device according to the above (8), the following configuration may be adopted: the lifting mechanism includes a link mechanism having a plurality of link members, and the link mechanism includes a hinge member that connects end portions of the plurality of link members to each other.

In this case, the hinge member couples the end portions of the plurality of link members to each other. Therefore, the number of components can be reduced as compared with a case where another component is interposed between the link member and the hinge member, for example.

(10) In the bed device according to the above (9), the following configuration may be adopted: the hinge member couples the ends of the plurality of link members to each other in a state where the ends of the plurality of link members overlap each other in a hinge shaft direction, and non-coupled portions other than the ends of the plurality of link members coupled via the hinge member are separated from each other in the hinge shaft direction than the ends.

In this case, the hinge member couples the ends of the plurality of link members to each other in a state where the ends of the plurality of link members overlap each other in the hinge shaft direction. Therefore, the structure of the link mechanism can be simplified.

In addition, non-coupling portions other than the end portions between the plurality of link members coupled via the hinge member are separated from each other in the hinge shaft direction than the end portions. Therefore, even when the link mechanism is operated so that the non-coupled portions overlap each other when the link mechanism is viewed in the hinge axis direction when the main frame is raised and lowered by the raising and lowering mechanism, the non-coupled portions can be reliably separated from each other in the hinge axis direction. This can suppress, for example, peeling of the coating due to friction between the non-joined portions.

According to the present invention, the bed device can be simply and stably formed.

Drawings

Fig. 1 is a perspective view of a bed device according to an embodiment of the present invention.

Fig. 2 is a side view of the bed arrangement shown in fig. 1.

Fig. 3 is a top view of the bed arrangement shown in fig. 1.

Fig. 4 is a bottom view of the bed arrangement shown in fig. 1.

Fig. 5 is a side view showing a state where the bed is lifted in the bed device shown in fig. 2.

Fig. 6 is a perspective view showing a state where the back floor and the leg floor are pivoted in the bed device shown in fig. 1.

Fig. 7 is a perspective view showing a part of the bed device shown in fig. 1 including the main frame, and is a view showing a state of being inverted upside down.

Fig. 8 is an enlarged view of a main part of the perspective view shown in fig. 7.

Fig. 9 is a sectional view of a portion of the bed arrangement shown in fig. 1 including a lumbar pan.

Fig. 10 is a bottom view of the bed device shown in fig. 4, and is an enlarged view of a main portion including the link mechanism.

Fig. 11 is a perspective view of a second link constituting the link mechanism shown in fig. 10, and is a view showing a state of being turned upside down.

Fig. 12 is a perspective view of a third link constituting the link mechanism shown in fig. 10.

Fig. 13 is an enlarged view of a main portion of the third link shown in fig. 12.

Description of the symbols

10 bed device

11 bed

12 support stand

16 drive mechanism

22 waist bottom plate

31 base frame

32 Main frame

33 lifting mechanism

36 ground part

41 link mechanism

51 lifting driving mechanism

60 bed structure parts

61 fastener

62 connecting piece

63 cladding piece

64 side Member

71 Link member

72 hinge part

Detailed Description

Hereinafter, a bed device 10 according to an embodiment of the present invention will be described with reference to fig. 1 to 13. The bed device 10 can be used as a general bed, an ICU bed, or the like in a medical environment (including a nursing environment), for example. In fig. 1 to 10, an arrow H indicates an orientation as a head side H when a person (user) sleeps, and an arrow F indicates an orientation as a foot side F when a person sleeps. In the following description, a horizontal direction perpendicular to the direction of arrow H, F, i.e., the front-rear direction, may be referred to as a left-right direction. The front-rear direction and the left-right direction are both directions along the horizontal direction.

As shown in fig. 1 to 6, the bed device 10 includes: a bed 11, a support stand 12, a fence 13, a plate 14, an option 15, and a drive mechanism 16. The bed device 10 is a so-called electric bed using electric power as a power source.

In a plan view, the bed 11 is longer in the front-rear direction than in the left-right direction. The longitudinal direction of the bed 11 is set as the front-rear direction, and the short-side direction of the bed 11 is set as the left-right direction. A mattress not shown is disposed on the bed 11. The user lies on the bed 11 via the mattress.

The bed 11 includes a back floor 21, a waist floor 22, and a leg floor 23. The back bottom plate 21, the waist bottom plate 22, and the leg bottom plate 23 are arranged in this order from the head side H toward the foot side F. The back plate 21 supports the back of the user. The lumbar pad 22 supports the waist of the user. The leg bottom plate 23 supports the legs of the user.

The leg bottom plate 23 includes a knee bottom plate 24 and a foot bottom plate 25. The knee bottom plate 24 and the foot bottom plate 25 are arranged in this order from the head side H toward the foot side F. The knee bottom plate 24 supports the user's knees to the waist. The foot sole plate 25 supports the user's knees to toes.

The support frame 12 supports the bed 11. The support frame 12 receives the bed 11 and the load of the user on the bed 11. As shown in fig. 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 is in contact with the ground. The base frame 31 has a rectangular shape in plan view. The base frame 31 includes: a first longitudinal member 34 extending in the front-rear direction, a first lateral member 35 extending in the left-right direction, and a ground contact portion 36 contacting the ground.

The first vertical members 34 are provided in a pair with a space therebetween in the left-right direction.

The first horizontal member 35 is bridged between the 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. The first cross member 35 is provided in a pair at a distance in the front-rear direction. The first horizontal member 35 is immovably fixed to the first vertical member 34. The first horizontal member 35 is welded (fixed) to the first vertical member 34.

The grounding part 36 is provided at an end of the first vertical member 34 in the front-rear direction. The longitudinal end of the first vertical member 34 protrudes further outward in the longitudinal direction than the first horizontal member 35. In the illustrated example, the ground contact portion 36 is a caster, but a rubber cover may be used instead 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 longitudinal member 37 extending in the front-rear direction, a second lateral member 38 extending in the left-right direction, and an option attachment portion 39 to which the option 15 is attached.

The second vertical members 37 are provided in a pair with a gap therebetween in the left-right direction.

The second horizontal member 38 connects the pair of right and left second vertical members 37 in the right and left direction. The second cross member 38 is provided in a pair at a distance in the front-rear direction. The second horizontal member 38 is immovably fixed to the second vertical member 37. The second horizontal member 38 is welded (fixed) to the second vertical member 37. The end portions of the second horizontal member 38 in the left-right direction protrude further in the left-right direction than the second vertical member 37.

The optional attachment mounting portion 39 is provided at an end portion in the left-right direction of the second cross member 38.

As shown in fig. 4 and 5, the lifting mechanism 33 couples the main frame 32 to be liftable and lowerable with respect to the base frame 31. The lifting mechanism 33 includes a pair of front and rear lifting units 40. The pair of lifting units 40 are disposed to sandwich the lumbar base plate 22 in the front-rear direction. Each lifting unit 40 includes: a pair of left and right link mechanisms 41, and a connecting member 42 connecting the pair of left and right link mechanisms 41. The bed 11 is lifted and lowered by the lifting mechanism 33 by operating the pair of front and rear lifting units 40 in parallel.

As shown in fig. 1 and 6, the support frame 12 supports a part of the bed 11 (movable base) so as to be rotatable about a rotation shaft 26 extending in the left-right direction. The bed arrangement 10 is a so-called movable backrest bed. In the present embodiment, the waist bottom plate 22 is fixed to the support frame 12, and the back bottom plate 21 and the leg bottom plate 23 are rotatably connected to the waist bottom plate 22.

The rotating shaft 26 includes: a first rotation shaft 26a connecting the back chassis 21 and the waist chassis 22, and a second rotation shaft 26b connecting the leg chassis 23 and the waist chassis 22.

The knee bottom plate 24 and the foot bottom plate 25 are connected to each other so as to be rotatable about a bent axis 27 extending in the left-right direction. Therefore, when the leg bottom plate 23 is rotated about the second rotation shaft 26b, the leg bottom plate 23 is flexed upward so that the flexion axis 27 is at the apex.

The plates 14 are disposed at both ends of the support frame 12 in the front-rear direction. The plate 14 is formed in a plate shape with front and back surfaces facing in the front-back direction. The plate 14 is detachably attached to the support frame 12. The plate 14 includes: a head plate 14a at the head side H, and a foot plate 14b at the foot side F.

The fence 13 is disposed at the end in the left-right direction of the support frame 12. In the present embodiment, the balustrade 13 is disposed on both sides in the left-right direction with respect to the support frame 12. The pair of fences 13 is provided at a distance in the front-rear direction. The fence 13 is connected to the support frame 12 so as to be vertically movable.

The fence 13 is disposed to be biased toward the head side H in the front-rear direction. When the bed device 10 is viewed from the side in the left-right direction, the balustrade 13 is close to the headboard 14a and is distant from the footboard 14 b.

The option unit 15 is detachably attached to the option unit attachment portion 39. In the present embodiment, the option device 15 includes a spacer 15 a. The spacer 15a blocks the space between the fence 13 and the leg plate 14b in the side view.

As shown in fig. 4, the driving mechanism 16 is attached to the support frame 12. The drive mechanism 16 is provided in plurality. The plurality of driving mechanisms 16 are disposed below the bed 11. The drive mechanism 16 moves at least a part (movable part) of the bed 11 and the support frame 12. The drive mechanism 16 is a linear actuator that extends and contracts in the front-rear direction.

The drive mechanism 16 includes: a lifting drive mechanism 51 for lifting the bed 11, and a pivot drive mechanism 52 for pivoting the back floor 21 or the leg floor 23 (movable floor).

The elevation drive mechanism 51 transmits a drive force to the elevation mechanism 33 to elevate and lower the main frame 32 with respect to the base frame 31. The plurality of lift drive mechanisms 51 are provided. The lift drive mechanisms 51 are provided in a pair in the front-rear direction. The pair of elevation drive mechanisms 51 are disposed in the center of the bed 11 in the lateral direction.

Both end portions of each of the elevation drive mechanisms 51 in the front-rear direction are attached to the main frame 32 and the elevation unit 40, respectively. In the elevation drive mechanism 51 on the head side H, the end portion on the head side H is attached to the elevation unit 40 on the head side H, and the end portion on the foot side F is attached to the main frame 32. In the elevating drive mechanism 51 for the foot side F, the end of the foot side F is attached to the elevating unit 40 for 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 for rotating the back chassis 21, and a second drive mechanism 54 for rotating the leg chassis 23. The first drive mechanism 53 and the second drive mechanism 54 are disposed so as to sandwich the elevation drive mechanism 51 in the left-right direction. Both ends of the first driving mechanism 53 in the front-rear direction are attached to the support frame 12 and the back chassis 21, respectively. The second driving mechanism 54 is attached to the support frame 12 and the leg base plate 23 at both ends in the front-rear direction.

In the present embodiment, the support frame 12 is provided with the mounting member 43, and the rotation driving mechanisms 52 are mounted to the mounting member 43 in common. The mounting member 43 is erected between the second vertical members 37 in the left-right direction. The attachment member 43 is disposed on the foot side F of the lumbar base plate 22. The end portions of the leg sides F in the front-rear direction of the respective pivot drive mechanisms 52 are commonly attached to the attachment member 43. This simplifies the structure, for example, compared to a case where each of the rotational drive mechanisms 52 is attached to a different member of the support frame 12.

As shown in fig. 7 to 9, at least a portion of the bed 11 is constituted by a bed structure member 60. In the present embodiment, the lumbar pan 22 is formed by the bed structure member 60. The lumbar pan 22 is made up of only one bed structure component 60. That is, the bed structure member 60 forms at least a portion (in the illustrated example, the entirety) of the lumbar pan 22.

The bed structure member 60 is fixed to the support frame 12. The bed structure member 60 is welded (fixed) to the main frame 32. The bed structure member 60 can be attached with the drive mechanism 16, and in the present embodiment, a plurality of drive mechanisms 16 can be attached. The bed structure member 60 is provided with a lifting drive mechanism 51.

As shown in fig. 8 and 9, the bed structure member 60 includes: a pair of fixing members 61, a coupling member 62, a covering member 63, and a side member 64. The pair of fixing members 61 are disposed on the support frame 12 at a distance from each other, and are fixed to the support frame 12. Each of the fixing pieces 61 extends in the left-right direction. The pair of mounts 61 are disposed at intervals in the front-rear direction. Each of the fasteners 61 is mounted on the pair of left and right second vertical members 37. The end portions of the respective anchors 61 in the left-right direction protrude outward in the left-right direction from the pair of left and right second vertical members 37. Each of the fixing members 61 is welded (fixed) to the second longitudinal member 37. The fixing member 61 is a tube (tubular). The shape of the fixing member 61 is rectangular when viewed from the left-right direction. The inner surfaces of the pair of fixing pieces 61 are opposed to each other in the front-rear direction.

The coupling member 62 couples the pair of fixing members 61. The coupling member 62 couples at least one of the inner surfaces of the pair of fixing members 61 and the lower surfaces of the pair of fixing members 61. In the present embodiment, the coupling 62 is disposed between the pair of fixtures 61, and couples the inner surfaces of the pair of fixtures 61 to each other. In the present embodiment, the coupling 62 is disposed between the pair of fixing members 61 in a limited manner, but the form of the coupling 62 is not limited thereto. For example, the coupling 62 may be disposed below the pair of mounts 61, and an upper surface of the coupling 62 may be fixed to a lower surface of each mount 61. For example, the coupling 62 may protrude from the pair of fixing members 61 in the front-rear direction, and couple the pair of fixing members 61 while sandwiching the pair of fixing members 61 from the front-rear direction.

The links 62 are provided in plurality at intervals. In the present embodiment, a pair of links 62 is disposed with a gap therebetween in the left-right direction. The coupling 62 couples the pair of fixing members 61 in the front-rear direction. Both ends of the coupling 62 in the front-rear direction are welded (fixed) to the fixing members 61.

The pair of couplers 62 are disposed at the center in the lateral direction of the pair of mounts 61. The connectors 62 are formed in the same shape and the same size. The coupling member 62 is a plate (plate-like). The link 62 extends along an orthogonal plane orthogonal to the left-right direction. The coupling 62 is longer in the front-rear direction than in the up-down direction.

The coupling 62 includes a body plate 65 and a projecting plate 66. The main body plate 65 is formed in a rectangular shape that is long in the front-rear direction when viewed from the front of the main body plate 65. The upper and lower edges of the body plate 65 are arranged at the same positions in the vertical direction with respect to the upper and lower surfaces of the coupling 62. The front and rear edges of the main body plate 65 are welded (fixed) to the fixing members 61.

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

The cover 63 covers the pair of fixing members 61 and the coupler 62, and is fixed to the pair of fixing members 61. The cover 63 covers the pair of fixing members 61 and the link 62 from above. The cover 63 is formed in a plate shape with front and back surfaces facing in the vertical direction. The covering member 63 is formed in a rectangular shape that is long in the left-right direction when viewed from the front of the covering member 63. The lateral dimension of the covering 63 is equal to the lateral dimension of the fixing 61. The front and rear end portions of the covering 63 are disposed on the pair of fasteners 61 and fixed to the fasteners 61. The upper edge of the main plate 65 abuts the lower surface of the cover 63.

The side members 64 extend along the coupling member 62 and couple the end portions of the pair of fixing members 61 to each other. The side members 64 extend in the front-rear direction. The side member 64 connects the left and right ends of the pair of fixing members 61 to each other. The side members 64 are formed in the same shape and the same size. The side member 64 is a plate (plate-like). The side member 64 extends along an orthogonal plane orthogonal to the left-right direction. The side member 64 extends parallel to the link 62. The side member 64 is longer in the front-rear direction than in the up-down direction. The side member 64 is longer in the front-rear direction than the coupling 62 and the cover 63. The side member 64 is welded (fixed) to the fixing member 61.

The link 62 can mount the drive mechanism 16. The drive mechanism 16 is sandwiched between the adjacent links 62. The coupler 62 is formed with a mounting hole 67. The mounting hole 67 is provided in the projecting plate 66. The mounting holes 67 are provided in pairs at positions opposite to each other in the left-right direction in the pair of left and right couplers 62. The drive mechanism 16 is rotatably attached to the pair of left and right attachment holes 67. The pair of left and right mounting holes 67 is provided in a pair in the front-rear direction. Thereby, the coupling 62 can mount the pair of drive mechanisms 16.

As shown in fig. 9, the pair of front and rear elevation drive mechanisms 51 are attached to the link 62. The end of the head side H of the elevation drive mechanism 51 on the foot side F and the end of the head side H of the elevation drive mechanism 51 on the foot side F are attached to the pair of links 62. The elevation drive mechanism 51 on the head side H and the elevation drive mechanism 51 on the foot side F are attached to a common link 62. This suppresses the number of components to be reduced, compared to a case where, for example, the elevation drive mechanism 51 on the head side H and the elevation drive mechanism 51 on the foot side F are attached to different couplers 62.

As shown in fig. 5 and 10, in the present embodiment, the link mechanism 41 includes a plurality of link members 71 and a hinge member 72.

The link member 71 is formed in a plate shape with front and back surfaces facing in the left-right direction. The link member 71 is formed in a rectangular shape when viewed from the front in the left-right direction.

The hinge member 72 connects the end portions of the plurality of link members 71 to each other. The hinge member 72 is formed in a shaft shape extending in the left-right direction. In the present embodiment, the hinge axis, which is the axis of the hinge member 72, extends in the left-right direction, and the hinge axis direction is the left-right direction. The hinge member 72 connects the end portions of the plurality of link members 71 to each other in a state where the end portions of the plurality of link members 71 overlap each other in the left-right direction.

In the link mechanism 41 of the lifting unit 40 on the head side H, the link member 71 includes: a first link 73, a second link 74, and a third link 75. The first link 73 is fixed to the base frame 31. The second link 74 is fixed to the main frame 32. The third link 75 connects the first link 73 and the second link 74. The third links 75 of the pair of right and left link mechanisms 41 are coupled to each other via the coupling member 42.

As shown in fig. 11, an end 74a of the second link 74 connected to the third link 75 is offset in the left-right direction with respect to a portion other than the end 74 a. Thus, as shown in fig. 10, the non-coupled portions other than the end portions, between the second link 74 and the third link 75 coupled via the hinge member 72, are separated from each other in the left-right direction than the end portions.

As shown in fig. 12 and 13, the end portion 75a of the third link 75 connected to the first link 73 is offset in the left-right direction with respect to the portion other than the end portion 75 a. Thereby, as shown in fig. 10, the non-coupling portions other than the end portions between the first link 73 and the third link 75 coupled via the hinge member 72 are separated from each other in the left-right direction than the end portions.

As described above, according to the bed structure member 60 and the bed device 10 of the present embodiment, when the driving mechanism 16 operates, the external force from the driving mechanism 16 is transmitted to the bed structure member 60. At this time, stress is generated in a portion (hereinafter, referred to as "fixing portion 60 a" (see fig. 8)) where the fixing member 61 and the support frame 12 are fixed. Here, in the bed structural member 60, a pair of the fixing pieces 61 is provided, and the coupling 62 couples the pair of fixing pieces 61. Therefore, the external force transmitted from the drive mechanism 16 to the bed structure member 60 is dispersed to the pair of mounts 61 by the coupling 62. Therefore, the stress generated in the fixing portion 60a can be dispersed to the fixing portion 60a of each of the pair of fixing members 61. Thus, for example, the fixing member 61 does not need to be fixed to the support frame 12 via a reinforcing member, and the fixing member 61 can be directly fixed to the support frame 12 or the like. As a result, for example, the number of components of the bed device 10 can be reduced, and the bed device 10 can be formed easily and stably. If the number of components of the bed device 10 can be reduced, for example, the coating cost and the like when coating the bed device 10 can be reduced. This enables the bed device 10 to be manufactured at low cost.

The link 62 can mount the drive mechanism 16. Therefore, the external force transmitted from the drive mechanism 16 to the bed structure member 60 is effectively dispersed to the pair of fixing members 61 by the coupling 62. This enables stress generated in the fixing portion 60a to be reliably dispersed to the fixing portion 60a of each of the pair of fixing members 61.

The coupling 62 can mount the drive mechanism 16, and the coupling 62 has not only a function of dispersing the external force but also a function of mounting the drive mechanism 16. This can reliably reduce the number of components, and can manufacture the bed device 10 at a lower cost.

The bed structure member 60 can mount a plurality of drive mechanisms 16. Therefore, the above-described stress dispersion effect can be remarkably exhibited.

The cover 63 is fixed to the pair of fixing members 61. Therefore, for example, when the external force from the drive mechanism 16 is transmitted to the bed structural member 60, the covering member 63 can restrict the relative displacement or the like of the pair of fixing members 61. This can effectively suppress the stress generated in the fixing portion 60 a.

The covering member 63 covers the pair of fixing members 61 and the coupling member 62. Therefore, for example, the mattress on the bed 11 can be supported by the cover 63 so that the mattress on the bed 11 does not abut against the anchor 61 and the coupler 62. According to the above, the mattress can be stably supported.

The side member 64 connects the end portions of the pair of fixing pieces 61 to each other. Therefore, for example, when an external force from the drive mechanism 16 is transmitted to the bed structure member 60, the side member 64 can restrict the relative displacement or the like of the pair of fixing pieces 61. This can effectively suppress the stress generated in the fixing portion 60 a.

Since the fixing member 61 is a tube, the bed device 10 is reliably formed simply and stably.

The links 62 are provided in plurality at intervals. Therefore, the weight of each coupler 62 can be reduced, and the external force transmitted from the drive mechanism 16 to the bed structure member 60 can be reliably dispersed to the pair of anchors 61.

In addition, when the drive mechanism 16 can be attached to the links 62 as in the present embodiment, the drive mechanism 16 can be sandwiched between adjacent links 62, for example. This enables the drive mechanism 16 to be firmly attached to the coupling 62.

The elevation drive mechanism 51 elevates the main frame 32 with respect to the base frame 31. The main frame 32 is loaded by the user from the bed 11. Therefore, even if the elevation drive mechanism 51 is assumed to be applied to the drive mechanism 16 of the bed device 10, it particularly plays a large role. Since the elevation drive mechanism 51 is attached to the bed structure member 60, the effect of dispersing the stress described above can be remarkably exhibited.

The bed structure component 60 forms at least a portion of the lumbar floor 22. Therefore, the waist bottom plate 22 is fixed to the support frame 12 so as to be substantially immovable, and thus the external force transmitted from the driving mechanism 16 to the bed structural member 60 can be stably transmitted to the support frame 12 via the bed structural member 60.

The hinge member 72 connects the end portions of the plurality of link members 71 to each other. Therefore, the number of components can be reduced as compared with a case where another component is interposed between the link member 71 and the hinge member 72, for example.

The hinge member 72 connects the end portions of the plurality of link members 71 to each other in a state where the end portions of the plurality of link members 71 overlap each other in the left-right direction. Therefore, the structure of the link mechanism 41 can be simplified.

The non-coupling portions of the plurality of link members 71 coupled via the hinge member 72 are separated from each other in the left-right direction than the end portions. Therefore, even when the link mechanism 41 is operated so that the non-coupled portions overlap each other in a state where the link mechanism 41 is viewed from the left-right direction when the main frame 32 is raised and lowered by the raising and lowering mechanism 33, the non-coupled portions can be reliably separated from each other in the left-right direction. This can suppress, for example, peeling of the coating due to friction between the non-joined portions.

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

The rail 13, the plate 14 and the option 15 may be omitted.

The lifting mechanism 33 is not limited to the structure shown in the above embodiment. For example, a so-called X-link type elevating mechanism 33 may be employed.

In the above embodiment, the elevation drive mechanism 51 is attached to the bed structure member 60, but the present invention is not limited thereto. For example, the rotational drive mechanism 52 may also be mounted to the bed structure member 60.

In the above embodiment, the plurality of driving mechanisms 16 are attached to the bed structure member 60, but the present invention is not limited thereto. For example, only one drive mechanism 16 may be mounted on the bed structure member 60.

In the above embodiment, the drive mechanism 16 is attached to the link 62, but the present invention is not limited thereto. For example, the drive mechanism 16 may be attached to a member other than the link 62 in the bed structure member 60.

The number of the coupling members 62 for coupling the pair of fixing members 61 to each other is not limited to 2, and may be 3 or more, or 1.

The fixing member 61 may not be a tube, and the coupling member 62 may not be a plate. For example, the fixing member 61 and the coupling member 62 may be rod-shaped.

The side member 64 may not be a plate. For example, the side members 64 may be formed integrally with the mount 61, and the pair of mounts 61 and the pair of side members 64 may be formed integrally as a rectangular frame.

The cover 63 and the side part 64 may also be absent from the bed structure part 60.

In the above embodiment, the lumbar pan 22 is constituted by only one bed structure member 60. However, the present invention is not limited thereto. For example, the lumbar pan 22 may be formed of a plurality of bed structure members 60. The lumbar chassis 22 may also be formed by a combination of a bed structure component 60 and other components.

In the above embodiment, the following 4ACT (4 motor) movable back bed is employed: the movable base is provided to pivot both the back base 21 and the leg base 23, and the lifting mechanism 33 is provided to lift and tilt the bed 11. For example, a 3ACT (3 motor) movable backrest bed without a reclining mechanism, a 2ACT (2 motor) movable backrest bed without a lifting mechanism, or a 1ACT (1 motor) movable backrest bed in which only one of the back bottom plate 21 or the leg bottom plate 23 is rotated may be used. In the case of the movable back bed of 1ACT (1 motor), the bed device 10 can be preferentially provided with a back lifting function using the back bottom plate 21 as a movable bottom plate. That is, in the present invention, at least one of the back chassis 21 and the leg chassis 23 can be used as the movable chassis, and at least one of the back chassis 21 and the leg chassis 23 can be used as the movable chassis.

Furthermore, the invention is not limited to use with electrically powered movable back beds. The present invention can also be used for a manually operated movable back bed in which the power of the drive mechanism 16 is manual.

In addition, the components of the above embodiments may be replaced with known components as appropriate without departing from the scope of the present invention, and the above modifications may be combined as appropriate.

Industrial applicability

According to the present invention, since the bed device can be formed simply and stably, industrial applicability is large.

Claims

1. A bed device is provided with: a base frame having a ground portion; a lifting mechanism connected with the base frame and provided with a lifting driving mechanism; a bed structure member to which the elevation drive mechanism is attached; and a main frame supporting a bed, the bed apparatus being characterized in that,

the bed structure member includes:

a pair of fixing members fixed to the main frame at intervals; and

a connecting member connecting the pair of fixing members.

2. The bed arrangement of claim 1,

the link is capable of mounting the elevation drive mechanism.

3. The bed arrangement of claim 2,

the bed device further includes a cover that covers the pair of fixtures and the coupler and is fixed to the pair of fixtures.

4. The bed arrangement according to any one of claims 1 to 3,

the bed device further includes a side member extending along the coupling member and coupling end portions of the pair of fixing members to each other.

5. The bed arrangement according to any one of claims 1 to 4,

the bed device can be provided with a plurality of the lifting driving mechanisms.

6. The bed arrangement of claim 5,

the bed structure component forms at least a portion of a lumbar floor.

7. The bed arrangement of claim 6,

the lifting mechanism is provided with a link mechanism which is provided with a plurality of link components,

the link mechanism includes a hinge member that connects end portions of the plurality of link members to each other.

8. The bed arrangement of claim 7,

the hinge parts couple the ends of the plurality of link members to each other in a state where the ends of the plurality of link members overlap each other in a hinge shaft direction,

non-coupling portions, other than end portions, between the plurality of link members coupled to each other via the hinge member are separated from each other in the hinge shaft direction than the end portions.