JP6140656B2 - Bed equipment - Google Patents

Description

  The present invention relates to a bed apparatus capable of changing a support height of a user by driving a bed frame up and down.

  For example, in hospitals and the like, users such as elderly people and sick people who are physically handicapped often use bed devices for nursing care. In the case of a bed device for nursing care, the bed frame for supporting the mattress can be raised and lowered, and if necessary, the support height from the floor surface of the bed frame, that is, the support height of the user who lies on the mattress. There is something that can be changed for the following reasons.

That is, when there is a possibility that the user falls from the bed frame while sleeping, the support height of the bed frame is made as low as possible for safety.
When a caregiver cares for a user, it may be preferable to reduce the support height of the user by the bed frame as much as possible in order to reduce the burden on the caregiver.

  When the user gets on and off the bed frame, the support height of the bed frame is lowered in order to reduce the burden on the user and to ensure safety.

  When the user on the mattress is moved to the wheelchair, the burden on the caregiver may be reduced if the support height of the user is made easy to move to the wheelchair.

  Therefore, a bed apparatus has been developed that can change the support height of the user. The bed apparatus shown in Patent Document 1 has a fixed frame that comes into contact with the floor surface, and supports that extend in the vertical direction are provided at both front and rear ends of the fixed frame.

  An elevating member is supported on the support so as to be movable up and down, and is driven up and down by a drive mechanism. A support frame (hereinafter referred to as a bed frame) that supports the floor is attached to the pair of elevating members. Then, by overlapping a part or all of the left and right frame parts constituting the bed frame in the horizontal direction with respect to the fixed frame, the floor surface can be brought close to the floor surface when it is at the lowest position. ing.

  In addition, the bed apparatus disclosed in Patent Document 2 has a base frame. The bed frame is provided on the base frame so as to be movable up and down by a link mechanism. By driving the link mechanism, the height of the bed frame is increased. I can change the height.

JP 2001-29175 A JP 2014-76214 A

  According to the bed apparatus having the conventional structure shown in Patent Documents 1 and 2, since the support height of the bed frame that supports the floor portion can be changed, the support height of the user who lies on the floor portion is supported. Can be changed according to various purposes.

  By the way, in a hospital or the like, when there is a change in a medical condition of a user or a change in a hospital room, the user may be moved to an operating room or another hospital room together with the bed apparatus.

  However, the bed apparatus disclosed in Patent Document 1 is provided with a fixed frame in contact with the floor surface so that the height of the bed frame can be changed, and a pair of supports, a lifting member, and a bed are provided on the fixed frame. The frame is sequentially provided.

  For this reason, when it is desired to move the bed apparatus, the entire bed apparatus must be lifted and moved together with the fixed frame. Therefore, the bed apparatus cannot be easily moved according to various situations.

  In addition, when delivering the bed apparatus to the hospital, the supplier assembles the bed apparatus outside the patient room where there is no patient and then carries it into the patient room. However, in the bed apparatus configured to be able to change the height of the bed frame shown in Patent Document 1, since the entire bed apparatus must be lifted and moved as described above, the carry-in movement from the assembly location to the hospital room is performed. It took a lot of labor.

  On the other hand, the bed apparatus disclosed in Patent Document 2 is provided with a caster on a base frame. Therefore, the bed frame can be easily moved together with the base frame by the casters.

  However, according to such a configuration, a caster is provided in advance on the lower surface of the base frame, and the bed frame is provided on the upper surface side of the base frame so as to be vertically driven by a link mechanism.

  Therefore, even when the bed frame is lowered to the maximum lowered position, that is, the lower limit, the height of the bed frame from the floor is limited by the casters, the base frame, and the link mechanism, and is lowered sufficiently low. There are times when you can't.

  As a result, it may be inconvenient for a physically handicapped user or the like to get on the bed frame, or it may be difficult to care for a user who is supine.

  Even if the present invention is configured so that the height of the lower limit of the bed frame can be made sufficiently low, it can be easily moved when changing the installation location or when carrying it from the assembly location to a hospital room or the like. An object of the present invention is to provide a bed apparatus that can be used.

This invention comprises a bed frame provided with attachment portions on one end side and the other end side in the longitudinal direction;
A guide member provided along the vertical direction on one end side and the other end side in the longitudinal direction of the bed frame;
A leg member that is movably provided on the guide member and protrudes to a lower end side of the guide member to support the bed frame;
A drive mechanism that drives the bed frame in the upward and downward directions along with the guide member along the leg member to change the support height of the bed frame by the leg member;
A caster that is provided at the mounting portion and supports the bed frame so that the bed frame can run instead of the leg member when the leg member is moved along the guide member and the bed frame is lowered .
The bed frame is
A pair of side members facing and spaced in parallel;
It has a board body provided on one end side and the other end side in the longitudinal direction of this side member,
The attachment portion is an attachment hole formed so as to penetrate in the vertical direction of the side member,
The caster has a support that rotatably supports a wheel, and an attachment shaft that is attached to the support and inserted into the attachment portion.
The lower end portion of the mounting shaft is provided with a flange portion that contacts the lower surface of the side member when the mounting shaft is inserted into the mounting hole, and the upper end portion engages with the upper surface of the side member, The bed apparatus is characterized in that a locking member for preventing the shaft from being pulled out from the mounting hole is provided.

  When the bed frame is lowered, a caster that supports the bed frame so as to be able to run can be attached to the mounting portion provided on the bed frame in place of the support legs.

  Therefore, a guide member is provided on the bed frame, a leg member is provided to be driven along the guide member, and the support height of the bed frame supported by the leg member can be changed, that is, the bed frame Even in a bed apparatus having a structure that can sufficiently lower the support height, the bed frame can be easily moved by the casters.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the state which supported the bed frame which shows one Embodiment of this invention by the height of a raise limit by the leg member. The top view of the bed apparatus shown in FIG. The figure which shows the drive mechanism for carrying out a cross section of the lower horizontal member of a board body and driving a bed frame to an up-down direction. The perspective view of the state which lowered the bed frame to the lower limit with the leg member, and was supported by the caster. The figure which shows the state which attached the caster to the attachment hole of the side member of a bed frame. (A) is a front view of the caster which cut the attachment axis | shaft, (b) is a side view similarly. The half sectional view of the double ball plunger provided in the attachment axis | shaft of a caster. The side view of the bed apparatus which raised the bed frame in order to attach a caster. The side view of the bed apparatus which lowered the bed frame to which the caster was attached to the descent limit. (A) is a perspective view when attaching a caster to the attachment hole of the side part of the bed frame raised to the upper limit, (b) is a perspective view of a state where the caster is attached to the attachment hole.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
A bed apparatus B shown in FIG. 1 includes a bed frame 1. As shown in FIG. 2, the bed frame 1 has a pair of side members 2 arranged in parallel at a predetermined interval.

  The lower end portion of the board body 3 is connected and fixed to one end and the other end of the side member 2 in the longitudinal direction. Thereby, the bed frame 1 has a rectangular frame shape as shown in FIG.

  In the frame of the bed frame 1, a floor plate body 6 is supported by a plurality of receiving members 7 that protrude from the inner surface of the side member 2 at a predetermined interval. A mattress as a bedding (not shown) is placed on the upper surface of the floor plate body 6.

  The floor plate body 6 is divided into five floor portions 6a to 6e in which horizontal rails 8 are installed at predetermined intervals, and the floor portions 6a to 6e are connected to each other so as to be rotatable. That is, the fixed floor portion 6 a located at the center in the longitudinal direction is fixed to the bed frame 1. A waist floor 6b and a back floor 6c are sequentially pivoted on one side of the fixed floor 6a, and a first leg floor 6d and a second leg floor 6e are sequentially pivoted on the other side. Yes.

  A pair of back-raising drive mechanisms 9 that operate in synchronism are provided at the longitudinal center of both inner surfaces of the bed frame 1. The drive mechanism 9 for raising the back is configured to have a height that does not protrude to the lower surface side of the bed frame 1, and drives the back floor portion 6 c together with the waist floor portion 6 b in the raising direction. The leg floor portion 6d and the second leg floor portion 6e are driven so as to form a mountain shape.

  In addition, as a specific example of the drive mechanism 9 for raising the back, for example, a structure shown in Japanese Patent No. 4317129 or Japanese Patent No. 3810687 may be used.

  The side member 2 of the bed frame 1 is formed by a flat rectangular tube-shaped member as shown in FIG. 5, and the upper and lower surfaces on one end side and the other end side in the longitudinal direction are as shown in FIG. Two sets of mounting holes 10 that are paired with each other are formed by penetrating in the vertical direction.

  As shown in FIG. 5, a sleeve 5 is provided between the mounting holes 10 formed in the upper surface and the lower surface of the side member 2. The mounting hole 10 and the sleeve 5 constitute a mounting portion for mounting a caster 38 to be described later.

  A pair of shaft portions provided so as to protrude from the lower end side of a side fence (not shown) can be detachably inserted into the mounting holes 10 of each set, that is, the sleeve 5. That is, a pair of side rails can be detachably attached to the side portions of the bed frame 1 by using the attachment holes 10.

  A mattress (not shown) is placed on the upper surface of the floor plate body 6. And, users such as disabled people and sick people lie on the top surface of the mattress.

  As shown in FIG. 1, the pair of board bodies 3 have a lower lateral member 11. The lower lateral member 11 constitutes the bed frame 1 together with the pair of side members 2. The lower horizontal member 11 has a length dimension substantially equal to the facing distance between the pair of side members 2 by a flat rectangular tube-shaped member.

At both ends in the longitudinal direction of the lower horizontal member 11, cylindrical guide members 12 having lower ends opened are provided along the vertical direction with the lower ends connected to the lower horizontal member 11. A board plate 13 is supported between the pair of guide members 12 with the lower end in contact with the upper surface of the lower lateral member 11. At both ends in the width direction of the upper part of the board 13, fixtures 14 are provided, and these fixtures 14 are detachable in engagement grooves (not shown) provided on the inner surface of the guide member 12 along the vertical direction. The engagement is not maintained.

  As shown in FIG. 3, a leg member 18 having a connecting piece 17 fixed to its upper end is guided and supported by a member (not shown) so as to be movable inside the guide member 12. Thereby, the leg member 18 can move in the vertical direction relative to the guide member 12. A disc-shaped support member 19 larger than the lower end opening of the guide member 12 is attached to the lower end of the leg member 18.

  As shown in FIG. 2, on the inner surface of the lower horizontal member 11 of one of the board bodies 3, a drive motor 22 constituting a drive mechanism 21 that drives the bed frame 1 in the vertical direction along the leg member 18. Is provided. An output unit 23 is connected to the drive motor 22.

  One end of an output shaft 24 that is rotationally driven by the drive motor 22 through the output unit 23 is attached to the output unit 23. The output shaft 24 is disposed at one end portion in the width direction on the lower surface side of the floor plate body 6 so as to be rotatable along the longitudinal direction of the bed frame 1.

  One end of the output shaft 24 protrudes into the lower horizontal member 11 of one board body 3 and the other end protrudes into the lower horizontal member 11 of the other board body 3 so as to be rotatably supported.

  The output shaft 24 protrudes slightly downward from the lower surface side of the bed frame 1 as shown in FIGS. When a later-described caster 38 is attached to the lower surface of the side member 2 of the bed frame 1 and the bed frame 1 is lowered to the lowest lowered position, the lower end of the caster 38 is positioned below the output shaft 24. It has become.

  As shown in FIG. 3, inside each lower horizontal member 11 (only one lower horizontal member 11 is shown), screw shafts 26 whose both ends are rotatably supported by the bearing unit 25 are provided along the longitudinal direction. It has been. A nut body 27 is screwed onto the screw shaft 26.

  When the screw shaft 26 is driven to rotate, the nut body 27 does not rotate with the screw shaft 26 and moves inside the lower lateral member 11 along the axial direction of the screw shaft 26. It is provided inside the transverse member 11.

  One end of a first wire 28 and a second wire 29 is connected to the nut body 27. The first wire 28 led out from the nut body 27 is engaged with the first pulley 31 to change the direction upward, and the other end is one leg located on one end side in the width direction of the board body 3. The member 18 is connected to the connecting piece 17 provided at the upper end of the member 18. The first pulley 31 is rotatably attached to a first bracket 30a fixed in one longitudinal end portion of the lower lateral member 11.

  The second wire 29 engages with a second pulley 32 rotatably attached to the first bracket 30a in the vicinity of the first pulley 31 and is horizontally changed in direction. The lateral member 11 is guided to the other end side in the longitudinal direction.

  A second bracket 30 b is fixedly provided at the other end of the lower horizontal member 11. A third pulley 33 and a fourth pulley 34 are rotatably attached to the second bracket 30b in the vertical direction. The second wire 29 whose direction has been changed by the second pulley 32 is sequentially engaged with the third and fourth pulleys 33 and 34 and is turned upward in the vertical direction.

  The other end of the second wire 29 is connected to the connecting piece 17 provided at the upper end of the other leg member 18 located on the other end in the width direction of the board body 3.

  The output shaft 24 and the screw shaft 26 projecting into the lower horizontal member 11 of each board body 3 are arranged so as to be orthogonal to each other. A first gear 36 is fitted to one end and the other end of the output shaft 24 (only one end is shown in FIG. 3). The first gear 36 meshes with a second gear 37 provided at one end of the screw shaft 26 with the first gear 36 and an axis orthogonal to each other.

  Therefore, when the drive motor 22 is operated and the output shaft 24 is rotationally driven via the output unit 23, the screw shaft 26 is interlocked with the rotation of the output shaft 24. When the screw shaft 26 rotates, the nut body 27 screwed into the screw shaft 26 shows the inside of the lower lateral member 11 along the screw shaft 26 in accordance with the rotation direction of the screw shaft 26 as shown in FIG. It moves along the direction indicated by arrow A or arrow C.

  When the nut body 27 is moved in the direction indicated by the arrow A, for example, one end portions of the first wire 28 and the second wire 29 are drawn into the lower lateral member 11. Accordingly, the lower lateral member 11 and the guide member 12 and the side member 2 provided integrally with the lower lateral member 11 are driven in the upward direction relative to the leg member 18. That is, the bed frame 1 is driven in the upward direction along the leg member 18.

  Conversely, if the screw shaft 26 is rotationally driven so as to move the nut body 27 in the direction indicated by the arrow C, the first and second wires 28 and 29 are drawn into the lower lateral member 11. Since the portion is drawn out from the lower horizontal member 11, the bed frame 1 is lowered by its own weight according to the length of the wires 28 and 29 drawn out.

  That is, the drive mechanism 21 including the drive motor 22, the output unit 23, the output shaft 24, the screw shaft 26, the first and second wires 28 and 29, the first to fourth pulleys 31 to 34, and the like described above. According to the above, when the drive motor 22 is operated, the screw shafts 26 respectively provided on the pair of front and rear board bodies 3 are driven by the output shaft 24 in synchronization.

  When the screw shafts 26 of the board bodies 3 are driven in synchronism, the nut body 27 screwed to the screw shaft 26 has a direction indicated by an arrow A or C in FIG. 3 according to the rotation direction of the screw shaft 26. The first and second wires 28 and 29 are driven in the pulling direction indicated by the arrow A or the feeding direction indicated by the arrow C.

Accordingly, the guide members 12 provided on both sides of each board body 3 move in the ascending or descending direction along the leg members 18 respectively, so that the longitudinal direction of the bed frame 1 integral with the guide member 12 is increased. One end side and the other end side can be simultaneously driven in the vertical direction at the same height. That is, the bed frame 1 can be adjusted in height while maintaining a horizontal state.

  The driving of the bed frame 1 by the driving mechanism 21 can be controlled and set by a remote controller (not shown) through a control device (not shown). The remote controller and the control device constitute a control means.

  In this embodiment, the drive control of the bed frame by the remote controller is performed at the lowest position where the bed frame 1 is lowered most, the highest position where the bed frame 1 is raised, and between the lowest position and the highest position. It is set so that it can be adjusted steplessly.

  The lowest position of the bed frame 1 is set to a height at which the output shaft 24 protruding to the lower surface side of the bed frame 1 approaches the floor surface but does not hit the floor surface.

  When it is necessary to move the bed apparatus having the above-described configuration, that is, the bed frame 1 due to a change in a medical condition or a hospital room of the user, a total of 4 are provided on the lower surface side of both ends of the pair of side members 2 of the bed frame 1. Two casters 38 are attached.

  The caster 38 has a support body 41 on which a pair of wheels 39 are rotatably provided as shown in FIGS. The support body 41 is provided with a flange portion 41b and a male screw portion 42 via a hexagonal shaft portion 41a. A mounting shaft 43 is provided at the lower end of the male screw portion 42 so as to open at the lower end thereof.

  The outer dimension of the mounting shaft 43 is set slightly smaller than the inner diameter dimension of the pair of upper and lower mounting holes 10 formed in the side member 2 and the sleeve 5 provided in the pair of upper and lower mounting holes 10. . A first through hole 45a is formed in the upper end portion of the mounting shaft 43, and a second through hole 45b is formed along the radial direction above the first through hole 45a.

When the female thread portion 44 of the mounting shaft 43 is screwed into the male thread portion 42 of the support 41, the hexagonal shaft portion 41a of the support 41 is sandwiched by a spanner (not shown), and the first through hole 45a. In addition, a rod (not shown) for preventing rotation of a predetermined length is inserted into one end. Then, in a state in which the mounting shaft 43 to hold the rod is prevented from rotating, a spanner 6 square shaft portion 41a of the mounting shaft 43, rotating the mounting shaft 43. Thereby, the male screw portion 42 can be screwed into the female screw portion 44.

  A double ball plunger 46 as a locking member is press-fitted and held in the second through hole 45b. As shown in FIG. 7, the double ball plunger 46 has a cylindrical body 47 that is press-fitted into the second through hole 45b. A coiled spring 48 is accommodated inside the cylindrical body 47, and spherical bodies 49 are accommodated and held at both ends of the spring 48 so as not to be pulled out from the openings at both ends of the cylindrical body 47. Yes.

  Then, when the double ball plunger 46 is press-fitted into the second through hole 45b, the sphere 49 protrudes from both end openings of the second through hole 45b. The distance between the flange 41b provided at the lower end of the mounting shaft 43 and the sphere 49 of the double ball plunger 46 provided at the upper end is such that the pair of mounting holes 10 are formed on the upper and lower surfaces. It is set slightly larger than the height dimension of the member 2.

  When the caster 38 is attached to the side member 2, the bed frame 1 is first driven to the raised position as shown in FIG. Next, the mounting shaft 43 of the caster 38 is attached to the lower surface of the side member 2 in the mounting hole 10 until the flange 41b provided at the lower end of the mounting shaft 43 contacts the lower surface of the side member 2. Insert into the sleeve 5 through the hole 10. The state before insertion is shown in FIG.

  Thereby, a pair of spheres 49 of the double ball plunger 46 provided at the upper end of the mounting shaft 43 is elastically displaced radially inward and passes through the mounting hole 10 on the upper surface side of the side member 2. After that, it restores radially outward. This state is shown in FIG. 10 (b) and FIG. As a result, the caster 38 is held by the side member 2 so that it cannot be pulled out.

  If the caster 38 attached to the side member 2 is pulled strongly downward, the pair of spheres 49 are elastically displaced radially inward, so that the caster 38 can be removed from the side member 2.

  A double ball plunger 46 is provided on the mounting shaft 43 in order to detachably attach the caster 38 to the side member 2. In place of such a configuration, other means, for example, when the mounting shaft 43 of the caster 38 is mounted in the mounting hole 10, it is elastically engaged with the upper surface of the side member 2 and can be attached to and detached from the side member 2. For example, the mounting shaft 43 may be provided with one protrusion having a spherical shape or a pyramid shape so that it can be elastically projected and retracted.

  When the caster 38 is attached to the lower surface side of the side member 2 in this way, the bed frame 1 is lowered until the caster 38 hits the floor surface, that is, the lowest position as shown in FIG.

  As a result, the bed frame 1, that is, the bed apparatus B, can be moved by the caster 38, so that a user who is supine on the bed frame 1 can be transported to an operating room or moved to another hospital room. In such a case, the bed apparatus B can be easily moved by running on the casters 38.

  Further, when the supplier delivers the bed apparatus B to a hospital or the like, the bed apparatus B is assembled outside the hospital room and carried in the hospital room. Even in such a case, if the bed apparatus B is assembled, after the caster 38 is attached to the lower surface side of the bed frame 1, the bed frame 1 is lowered until the caster 38 is installed on the floor surface. The assembled bed apparatus B can be run by the casters 38 and carried into a hospital room and installed at a predetermined location. Therefore, delivery work at the time of delivery of the bed apparatus B can be easily performed.

  When the bed apparatus B is moved to a target location and then the bed frame 1 is raised to a predetermined height and used, the bed frame 1 at the lower limit height as shown in FIG. As shown in FIG. Next, when the caster 38 attached to the side member 2 of the bed frame 1 is pulled downward, the bed apparatus B can be used with the caster 38 removed from the side member 2 as described above.

  In the bed apparatus B configured as described above, the bed frame 1 is provided with a guide member 12 on the board body 3, and a leg member 18 that supports the bed frame 1 is inserted into the guide member 12. Then, the support height of the bed frame 1 can be adjusted by moving the guide member 12 with respect to the leg member 18.

  Therefore, the height of the bed frame 1 is not provided on the lower surface side of the bed frame 1 without providing a link mechanism for driving the bed frame 1 up and down and a base member for providing the link mechanism as in the conventional bed apparatus. Can be adjusted.

  That is, according to the bed apparatus B having the above-described structure, the bed frame 1 can be lowered to a height at which the lower surface approaches the floor surface. That is, the bed frame 1 can be lowered to a sufficiently low level.

  Even when the bed frame 1 can be lowered to a sufficiently low level, when the bed frame 1 is moved as necessary, the bottom surface of the side member 2 of the bed frame 1 is moved as described above. The caster 38 is attached, and the bed frame 1 is lowered until the caster 38 comes into contact with the floor surface, so that the movement can be easily performed. That is, it is possible to easily move the bed frame 1 while having a structure that can sufficiently reduce the support height of the bed frame 1.

  The four guide members 12 of the bed frame 1 are driven synchronously by the drive mechanism 21 with respect to the four leg members 18. Therefore, the bed frame 1 is driven in the vertical direction while maintaining a horizontal state with respect to the leg member 18.

  The casters 38 are detachably attached to the bed frame 1. Therefore, since the caster 38 can be detached from the bed frame 1 when not required, the appearance of the bed apparatus B is not impaired or obstructed.

  When the bed frame 1 is lowered to the lowering limit, the caster 38 that supports the bed frame 1 so as to be able to travel is provided with an attachment hole 10 for attaching a side fence provided in an ordinary nursing bed device. Installed using it. Therefore, since it is not necessary to provide a dedicated mounting portion for mounting the caster 38, it is possible to prevent an increase in cost.

  The present invention can be variously modified. For example, a structure is adopted in which a wire is pushed and pulled by a nut body provided on a screw shaft as a drive mechanism for driving a guide member of a bed frame in the vertical direction with respect to a leg member.

  Instead, the guide member and the leg member may be connected by a driving means such as a cylinder or a linear guide, and the guide member may be driven in the vertical direction with respect to the leg member.

  As the attachment portion for attaching the caster to the bed frame, an attachment hole for supporting the side fence to the bed frame is used. However, a special attachment member for attaching the caster to the side member may be provided as the attachment portion.

  DESCRIPTION OF SYMBOLS 1 ... Bed frame, 2 ... Side member, 3 ... Board body, 9 ... Back raising drive mechanism, 10 ... Mounting hole (attachment part), 12 ... Guide member, 18 ... Leg member, 21 ... Drive mechanism, 38 ... Caster, 39 ... Wheels, 41 ... Supports, 41b ... Gutter, 43 ... Mounting shaft, 46 ... Double ball plunger (locking member)

Claims (2)

A bed frame provided with attachment portions on one end side and the other end side in the longitudinal direction;
A guide member provided along the vertical direction on one end side and the other end side in the longitudinal direction of the bed frame;
A leg member that is movably provided on the guide member and protrudes to a lower end side of the guide member to support the bed frame;
A drive mechanism that drives the bed frame in the upward and downward directions along with the guide member along the leg member to change the support height of the bed frame by the leg member;
A caster that is provided at the mounting portion and supports the bed frame so that the bed frame can run instead of the leg member when the leg member is moved along the guide member and the bed frame is lowered .
The bed frame is
A pair of side members facing and spaced in parallel;
It has a board body provided on one end side and the other end side in the longitudinal direction of this side member,
The attachment portion is an attachment hole formed so as to penetrate in the vertical direction of the side member,
The caster has a support that rotatably supports a wheel, and an attachment shaft that is attached to the support and inserted into the attachment portion.
The lower end portion of the mounting shaft is provided with a flange portion that contacts the lower surface of the side member when the mounting shaft is inserted into the mounting hole, and the upper end portion engages with the upper surface of the side member, A bed apparatus comprising a locking member that prevents the shaft from being pulled out of the mounting hole. Cylindrical guide members whose lower ends are open are provided at both ends in the width direction of each board body, and the bed frame is supported by four leg members movably provided on the respective guide members. And
The bed apparatus according to claim 1, wherein the four guide members provided on the bed frame are configured to be driven in the vertical direction in synchronization with the drive mechanism.

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