JP7657758B2 - Bed Equipment - Google Patents

Description

The present invention relates to a bed device.

Generally, a bed device comprises a bed frame and a bed base supported by the bed frame, and is used with a mattress placed on the bed base.

Conventionally, bed devices have been proposed that are equipped with a mechanism that allows the bed plate to expand and contract in the longitudinal direction of the bed device in order to realize a bed size that suits the user's physique.

Patent No. 2800916 JP 2000-37261 A

As described above, in a bed device in which the bed plate is extendable and contractable, if the bed plate expands or contracts due to an unintentional external force, a mismatch in shape between the mattress and the bed plate may occur.

In addition, in most cases, the mattress is simply placed on the floor plate and is not fixed to the floor plate. Therefore, the mattress may shift relative to the floor plate due to the user's movements on the mattress or when getting on and off the mattress.

There is also room for improvement in various other aspects of conventional bed devices. Therefore, one of the objectives of this disclosure is to improve the usability of bed devices, particularly those with extendable and retractable bed panels.

The bed device according to one embodiment includes a bed plate body including a first bed plate and a second bed plate aligned in the longitudinal direction, a bed frame supporting the bed plate body so that the first bed plate and the second bed plate are relatively movable in the longitudinal direction, and a stopper that can be attached to the side of the bed plate body. The stopper includes a mattress receiving portion that protrudes above the bed plate body, and a restricting portion that restricts the relative movement of the first bed plate and the second bed plate in the longitudinal direction.

The bed apparatus may further include a cover attached to a side of the second bed plate and movable together with the second bed plate. In this case, the cover may have a first engagement portion that can be engaged with the regulating portion, the bed frame may have a second engagement portion that can be engaged with the regulating portion, and the regulating portion may engage with the first engagement portion and the second engagement portion to regulate the relative movement of the first bed plate and the second bed plate in the longitudinal direction.

The bed frame may include a first frame having the second engagement portion and supporting the first bed plate, and a second frame attached to the first frame so as to be movable in the longitudinal direction and supporting the second bed plate.

The first engagement portion may include a first engagement hole, the second engagement portion may include a plurality of second engagement holes aligned in the longitudinal direction, and the restricting portion may include a pin that can be inserted into the first engagement hole and the second engagement hole.

The first floor plate may have a plurality of slits that overlap with the second engagement holes, and the pin may have a groove on its outer periphery that can engage with the slits.

According to another aspect of one embodiment, the bed device includes a bed plate body including a first bed plate and a second bed plate aligned in the longitudinal direction, a bed frame supporting the bed plate body so that the first bed plate and the second bed plate are relatively movable in the longitudinal direction, a cover attached to the side of the second bed plate and movable together with the second bed plate, and a stopper attachable to the side of the bed plate body. The stopper includes a restricting portion that restricts the relative movement of the first bed plate and the second bed plate in the longitudinal direction. The cover has a first engaging portion that can engage with the restricting portion. The bed frame includes a first frame that supports the first bed plate and a second frame that is attached to the first frame so as to be movable in the longitudinal direction. The restricting portion engages with the first engaging portion and the second engaging portion, thereby restricting the relative movement of the first bed plate and the second bed plate in the longitudinal direction.

This disclosure makes it possible to improve the usability of a bed device with an extendable bed plate.

FIG. 1 is a schematic perspective view of a bed apparatus according to one embodiment. FIG. 2 is a schematic perspective view of the back floorboard, cover and stopper. FIG. 3 is another schematic perspective view of the back floorboard, cover and fasteners. FIG. 4 is a perspective view showing a schematic view of a part of a bed frame. FIG. 5 is a schematic perspective cross-sectional view of the back base plate and bed frame. FIG. 6 is a schematic perspective cross-sectional view of an extended back base plate and bed frame. FIG. 7 is a schematic perspective view of the fastener. FIG. 8 is another schematic perspective view of the fastener. FIG. 9 is a schematic perspective view of the vicinity of the side portion from below with the cover and fasteners removed. FIG. 10 is a schematic plan view of the vicinity of the side with the cover and fasteners attached, as viewed from below. FIG. 11 is a diagram showing the positional relationship between the first engagement hole, the second engagement hole, and the slit.

An embodiment will be described with reference to the drawings.
In this embodiment, an electric bed capable of changing the shape of a bed platform is disclosed as an example of a bed apparatus. However, the configuration disclosed in this embodiment, particularly the structure related to the expansion and contraction of the bed platform, can also be applied to other types of bed apparatuses, such as bed apparatuses that do not have an electrical control element.

Figure 1 is a schematic perspective view of a bed device 1 according to this embodiment. In the following description, a first direction X (longitudinal direction), a second direction Y (width direction), and a third direction Z (height direction) are defined as shown in the figure. In this embodiment, these directions X, Y, and Z are mutually perpendicular.

The bed device 1 includes a bed frame 2 and a bed plate body 3 arranged on the bed frame 2. Both the bed frame 2 and the bed plate body 3 have an elongated shape in the first direction X.

The bed plate body 3 has sides S1, S2, S3, and S4. Sides S1 and S2 extend parallel to the first direction X. Sides S3 and S4 extend parallel to the second direction Y. For example, side S3 is located on the head side of a user lying on his/her back on the bed device 1, and side S4 is located on the foot side of the user. Side S1 is located on the right side of the user, and side S2 is located on the left side of the user.

The bed plate body 3 includes a back bed plate 3A, a lumbar bed plate 3B, a thigh bed plate 3C, and a foot bed plate 3D. These bed plates 3A, 3B, 3C, and 3D are arranged in order in the first direction X. Two adjacent bed plates 3A, 3B, 3C, and 3D are connected to be rotatable about an axis parallel to the second direction Y. When the bed device 1 is in use, a mattress is placed on the bed plates 3A, 3B, 3C, and 3D. The side portion S1 is formed by one end of the bed plates 3A, 3B, 3C, and 3D in the second direction Y, and the side portion S2 is formed by the other end of the bed plates 3A, 3B, 3C, and 3D in the second direction Y. The side portion S3 is formed by the head end of the bed plate 3A, and the side portion S4 is formed by the foot end of the bed plate 3D.

The bed apparatus 1 has a number of covers attached to the sides S1 and S2. In the example of FIG. 1, covers 41, 42, and 43 are attached to the sides S1 and S2 of the back plate 3A, respectively. Similarly, covers 41, 42, and 43 are attached to the sides S1 and S2 of the foot plate 3D, respectively.

The bed apparatus 1 has at least one fastener 5 that can be attached to the sides S1, S2, S3, and S4. In the example of FIG. 1, a fastener 5 is attached to each cover 41 on each of the sides S1 and S2.

The bed device 1 may include multiple side rail bases 6 for supporting the side rails arranged along the sides S1 and S2. In the example of FIG. 1, two side rail bases 6 are provided on each of the sides S1 and S2.

The bed apparatus 1 may include a headboard 71 and a footboard 72. In the example of FIG. 1, the headboard 71 is attached to the side portion S3 via a pair of holders 73, and the footboard 72 is attached to the side portion S4 via a pair of holders 74.

The bed device 1 further includes a drive mechanism disposed below the bed plate body 3. For example, this drive mechanism includes a number of motors and a number of links for transmitting the power of these motors, and raises and lowers the bed plate body 3. Furthermore, this drive mechanism transforms the bed plate body 3 from a flat state as shown in FIG. 1 into a predetermined shape. Examples of the predetermined shape include a back-raised state in which the back plate 3A is raised, and a leg-raised state in which at least one of the thigh plate 3C and the foot plate 3D is raised.

Figures 2 and 3 are schematic perspective views of the back floor panel 3A, covers 41, 42, 43, and fastener 5. Figure 3 shows the state in which the covers 41, 43 and fastener 5 provided on the side S1 have been removed.

The rear floor panel 3A includes a first floor panel 31, a second floor panel 32, and a third floor panel 33 aligned along the first direction X. The floor panels 31, 32, and 33 are formed, for example, from a synthetic resin, and have a plurality of long through holes in the second direction Y.

The second bed plate 32 is located closer to the head than the first bed plate 31 and has a side portion S3. The third bed plate 33 is located closer to the feet than the first bed plate 31. From the foot-side end of the third bed plate 33, multiple connecting portions 81 protrude for rotatably connecting the lumbar bed plate 3B shown in FIG. 1.

The ends of the first floor plate 31 and the second floor plate 32 in the second direction Y are fitted into the covers 41 arranged on each of the sides S1 and S2. The ends of the third floor plate 33 in the second direction Y are fitted into the covers 42 arranged on each of the sides S1 and S2. The ends of the first floor plate 31 and the third floor plate 33 in the second direction Y are fitted into the covers 43 arranged on each of the sides S1 and S2.

The head end of the cover 43 is located between the cover 41 and the first floor plate 31. The foot end of the cover 43 is located between the cover 42 and the third floor plate 33. The covers 41 and 43 are not fixed to each other. This allows the cover 41 to slide relative to the cover 43 in the first direction X.

As shown in FIG. 3, the side wall 310 of the first floor board 31 in the side portion S1 has slits 31L and 31S aligned in the first direction X. Slit 31L is located closer to the head than slit 31S. Both slits 31L and 31S have an elongated shape in the third direction Z and open at the lower end of the side wall 310.

The cover 41 has a first engagement portion EP1 that can engage with the restricting portion 53 of the stopper 5 described below. In this embodiment, the first engagement portion EP1 includes a first engagement hole H1 that penetrates the cover 41 in the second direction Y.

The cover 41 has a slit 411 extending in the first direction X. Similarly, the cover 42 has a slit 421 extending in the first direction X. By providing the slits 411, 421, even if the insides of the covers 41, 42 get wet, for example, when cleaning the floor panel body 3, the insides of the covers 41, 42 can be dried.

In the example of FIG. 3, the width of the slit 411 is smaller than the diameter of the first engagement hole H1. Furthermore, the slit 411 is connected to the first engagement hole H1. As another example, the slit 411 may be an opening independent of the first engagement hole H1.

The side wall of the first floor plate 31 in side portion S2 also has slits 31L and 31S similar to those in side wall 310. The configurations of the covers 41, 42, and 43 attached to side portion S2 are similar to the configurations of the covers 41, 42, and 43 attached to side portion S1.

The bed plate body 3 is extendable in the first direction X. To achieve this configuration, in this embodiment, the first bed plate 31 and the second bed plate 32 are supported by the bed frame 2 so that they can move (slide) relatively in the first direction X, as shown by the arrow R in FIG. 2. As a result, the position of the side portion S3 changes between the position shown by the solid line and the position shown by the dashed line in FIG. 2.

Figure 4 is a perspective view showing the elements of the bed frame 2 that support the back panel 3A. The bed frame 2 includes a first frame 8 and a second frame 9. As shown by the arrow R, the second frame 9 is attached to the first frame 8 so as to be movable in the first direction X.

The first frame 8 supports the first floor plate 31 and the third floor plate 33. The second frame 9 supports the second floor plate 32. The first frame 8 and the first floor plate 31, the first frame 8 and the third floor plate 33, and the second frame 9 and the second floor plate 32 are each fixed by an appropriate means such as screws.

The first frame 8 has frame members 82, 83, and 84 that extend parallel to the second direction Y, and crosspiece members 85, 86, 87, and 88 that connect these frame members 82, 83, and 84. The frame member 83 is located between the frame members 82 and 84 in the first direction X. The above-mentioned connecting portion 81 is provided on the frame member 84. The crosspiece members 85, 86, 87, and 88 extend parallel to the first direction X.

The first frame 8 further has a pair of second engagement portions EP2 that can engage with the restricting portion 53 of the stopper 5 described below. These second engagement portions EP2 are provided at both ends of the frame material 83 in the second direction Y. In this embodiment, each second engagement portion EP2 includes a plate PL that is elongated in the first direction X, and two second engagement holes H2 (H2L, H2S) that penetrate the plate PL and are aligned in the first direction X.

The second frame 9 has a frame member 91 extending parallel to the second direction Y and a pair of rods 92 extending from the frame member 91 in the first direction X. The frame member 91 is positioned closer to the head than the frame member 82.

Each rod 92 is positioned outside the crosspieces 85, 86, 87, and 88 in the second direction Y, and has a length greater than at least the distance between the frame members 82 and 83. Each rod 92 is slidably passed through a through hole 821, 831 provided in each of the frame members 82, 83.

In such a configuration, the second frame 9 can move between a position where the frame material 91 is close to the frame material 82 as shown by the solid line in FIG. 4, and a position where the frame material 91 and the frame material 82 are separated as shown by the dashed line. However, the configuration of the first frame 8 and the second frame 9 is not limited to the example shown in FIG. 4.

Figures 5 and 6 are schematic perspective cross-sectional views of the back floor plate 3A and the bed frame 2. Figure 5 shows the back floor plate 3A in its maximally contracted state, and Figure 6 shows the back floor plate 3A in its maximally extended state.

The first floorboard 31 has a wall portion 311 on the head side, a recessed portion 312 extending in the second direction Y, and a flat surface 313 (upper surface) near the wall portion 311. The frame material 82 of the first frame 8 is arranged so as to cover the wall portion 311. The frame material 83 of the first frame 8 is arranged in the recessed portion 312.

The second floor plate 32 has a plate portion 321 and a pair of wall portions 322, 323 that protrude downward from the plate portion 321. The wall portion 322 is provided at the head end of the plate portion 321. The wall portion 323 faces the wall portion 322 with a gap between them. The frame material 91 of the second frame 9 is located between the wall portions 322, 323.

As shown in FIG. 5, when the rear floor panel 3A is in the fully retracted state, the wall portion 323 is in contact with the frame material 82. Furthermore, the plate portion 321 entirely covers the flat surface 313.

As shown in FIG. 6, when the rear floor panel 3A is fully extended, the wall portion 323 is separated from the frame material 82. Furthermore, most of the flat surface 313 is exposed from the plate portion 321.

When the second floor plate 32 moves relative to the first floor plate 31 between the position in FIG. 5 and the position in FIG. 6, the plate portion 321 slides on the flat surface 313. The cover 41 is fixed to at least one of the second floor plate 32 and the second frame 9. On the other hand, the cover 41 is not fixed to the first floor plate 31 and the first frame 8. Therefore, when the second floor plate 32 moves, the cover 41 moves together with the second floor plate 32 while sliding on the outer surface of the cover 43.

Even when the back panel 3A is fully extended as shown in FIG. 6, a portion of the cover 41 overlaps with the cover 43. This prevents gaps from forming between the covers 41 and 43, improving the safety of the bed apparatus 1.

7 and 8 are schematic perspective views of the fastener 5. The fastener 5 has a holder portion 51 for attaching the fastener 5 to the cover 41, a mattress receiving portion 52 for preventing the mattress placed on the bed plate body 3 from shifting, and a restricting portion 53 for restricting the relative movement of the first bed plate 31 and the second bed plate 32.

The holder portion 51 includes opposing holding plates 511, 512 and a connection portion 513 that connects the holding plates 511, 512. The mattress receiving portion 52 extends from the holding plate 511 in the opposite direction to the connection portion 513. In the example of FIG. 7, the mattress receiving portion 52 has a pair of arc-shaped openings 521.

For example, the mattress receiving portion 52 is a flat plate that is generally perpendicular to the retaining plate 511. A pair of ribs 54 is provided at the corner formed by the retaining plate 511 and the mattress receiving portion 52. A similar rib 54 is also provided at the corner formed by the retaining plate 511 and the connecting portion 513.

In this embodiment, the restricting portion 53 includes a cylindrical pin 530. The pin 530 is formed of, for example, a metal material. As shown in FIG. 7, an annular groove 531 is provided on the outer peripheral surface of the pin 530.

The pin 530 is located between the retaining plates 511, 512 and extends from the connection portion 513. For example, the portion of the fastener 5 other than the pin 530 is made of synthetic resin. One end of the pin 530 has a head with an expanded diameter, which is embedded in the connection portion 513. This causes a portion of the connection portion 513 to protrude, as shown in FIG. 8.

Figure 9 is a schematic perspective view of the vicinity of side S1 from below with cover 41 and fastener 5 removed. Figure 10 is a schematic plan view of the vicinity of side S1 from below with cover 41 and fastener 5 attached.

As shown in FIG. 9, the plate PL of the second engagement portion EP2 faces the inner surface of the side wall 310 of the first floor plate 31. The second engagement hole H2L overlaps with the slit 31L of the side wall 310 in the second direction Y. The second engagement hole H2S overlaps with the slit 31S of the side wall 310 in the second direction Y.

The stopper 5 is attached to the cover 41 by being pushed into the cover 41 so that the cover 41 shown in FIG. 3 is positioned between the holding plates 511 and 512. When attached to the cover 41, the holding plates 511 and 512 clamp the cover 41 due to the elastic force of the connection portion 513.

When the stopper 5 is attached to the cover 41, the restricting portion 53 engages with the first engagement portion EP1 and the second engagement portion EP2, thereby restricting the relative movement of the first floor plate 31 and the second floor plate 32 in the first direction X.

Specifically, the pin 530 is inserted into the first engagement hole H1 (first engagement portion EP1) of the cover 41 shown in FIG. 3. Furthermore, the pin 530 is inserted into either the slit 31L and the second engagement hole H2L, or the slit 31S and the second engagement hole H2S, whichever overlaps with the first engagement hole H1. This prevents the cover 41 from moving in the first direction X relative to the first frame 8 on which the second engagement portion EP2 is provided. As a result, movement of the second floor plate 32 and the second frame 9 fixed to the cover 41 relative to the first floor plate 31 fixed to the first frame 8 is restricted.

In the example of FIG. 10, the pin 530 is inserted into the slit 31S and the second engagement hole H2S. The groove 531 of the pin 530 is engaged with the slit 31S. In other words, the width of the slit 31S in the first direction X is smaller than the diameter of the portion of the pin 530 excluding the groove 531, and the edge of the slit 31S is located inside the groove 531.

The side wall 310 in which the slit 31S is provided is made of, for example, synthetic resin and is flexible. Therefore, when the pin 530 is inserted into the slit 31S, the slit 31S is pushed open by the part of the pin 530 that is closer to the tip than the groove 531, and the pin 530 can be inserted until the slit 31S and the groove 531 are aligned. When removing the stopper 5, the slit 31S is pushed open by pulling the stopper 5 with a certain amount of force or more, and the engagement between the slit 31S and the groove 531 is released.

In this way, the engagement between the slit 31S and the groove 531 prevents the pin 530 from falling out. As a result, the stopper 5 can be prevented from unintentionally coming out. The configuration of the slit 31L is the same as that of the slit 31S. Therefore, when the pin 530 is inserted into the slit 31L and the second engagement hole H2L, the edge of the slit 31L enters the inside of the groove 531, preventing the pin 530 from falling out.

Figure 11 is a diagram showing the positional relationship between the first engagement hole H1, the second engagement holes H2L and H2S, and the slits 31L and 31S. As described above, the second engagement hole H2S and the slit 31S overlap in the second direction Y, and the second engagement hole H2L and the slit 31L overlap in the second direction Y.

As the second floor plate 32 moves, the first engagement hole H1 moves within a range that includes a position P1 where it overlaps with the second engagement hole H2S and the slit 31S, and a position P2 where it overlaps with the second engagement hole H2L and the slit 31L.

When the first engagement hole H1 is at position P1, attaching the stopper 5 so that the pin 530 passes through the first engagement hole H1, the second engagement hole H2S, and the slit 31S fixes the first floor plate 31 and the second floor plate 32 in a state where the rear floor plate 3A is maximally contracted.

On the other hand, when the first engagement hole H1 is at position P2, if the stopper 5 is attached so that the pin 530 passes through the first engagement hole H1, the second engagement hole H2L, and the slit 31L, the first floor plate 31 and the second floor plate 32 are fixed in a state in which the back floor plate 3A is fully extended.

The distance D between positions P1 and P2 corresponds to the adjustable amount of the length of the back plate 3A in the first direction X. The foot plate 3D and its surrounding structure shown in FIG. 1 are similar to the back plate 3A and its surrounding structure described using FIG. 2 to FIG. 11. That is, the length of the foot plate 3D in the first direction X can also be adjusted by an amount corresponding to the distance D. However, the amount of adjustment of the length of the back plate 3A and the foot plate 3D may differ.

The pair of retainers 73 shown in FIG. 1 are connected to the second frame 9. Therefore, the position of the headboard 71 changes as the back floor plate 3A expands and contracts. Similarly, the pair of retainers 74 shown in FIG. 1 are connected to a frame (corresponding to the second frame 9) that supports the foot floor plate 3D, and the position of the footboard 72 changes as the foot floor plate 3D expands and contracts.

In the bed device 1 according to the present embodiment, the length of the bed plate body 3 is adjustable, making it possible to use a mattress of a size that suits the user's physique. Furthermore, in this embodiment, the length of the bed plate body 3 can be fixed before and after expansion and contraction by the fasteners 5. This prevents the bed plate body 3 from expanding or contracting even if an unintended external force is applied to the bed plate body 3 when the bed device 1 is being used, and prevents the shape of the mattress from becoming inconsistent with that of the bed plate body 3.

In this embodiment, the fastener 5 has a mattress receiving portion 52. When the fastener 5 is attached, the mattress receiving portion 52 protrudes above the floor plate body 3 as shown in Figures 5 and 6. When a mattress is placed on the floor plate body 3, the mattress receiving portion 52 comes into contact with the side of the mattress. This makes it possible to suppress the mattress from shifting in the second direction Y.

In this way, the stopper 5 according to this embodiment serves to regulate the expansion and contraction of the bed plate body 3 and to prevent the mattress from shifting. By achieving these roles with a single stopper 5, the number of parts in the bed apparatus 1 is reduced and the usability of the bed apparatus 1 is further improved compared to when each role is achieved with a separate part.

The above embodiments do not limit the scope of the present invention to the configurations disclosed in the embodiments. The present invention can be implemented by modifying the configurations disclosed in the embodiments in various ways.

For example, in this embodiment, both the back floor plate 3A and the foot floor plate 3D are extendable. As another example, only one of the back floor plate 3A and the foot floor plate 3D may be extendable.

In this embodiment, the bed apparatus 1 is illustrated as having a headboard 71 and a footboard 72. As another example, the bed apparatus 1 may not have at least one of the headboard 71 and the footboard 72. In this case, the stopper 5 may be attached to the side portion S3 and the side portion S4 of the bed plate body 3, and the stopper 5 may suppress the mattress from shifting in the first direction X.

In this embodiment, the second engagement part EP2 includes two second engagement holes H2L, H2S. As another example, the second engagement part EP2 may include three or more second engagement holes. In this case, it is possible to adjust the length of the back floor plate 3A and the foot floor plate 3D in three or more stages.

In addition, the first engagement portion EP1 may have a plurality of first engagement holes H1 aligned in the first direction X, and the second engagement portion EP2 may have one second engagement hole H2 that overlaps sequentially with each of the first engagement holes H1 as the second floor plate 32 moves.

1...bed device, 2...bed frame, 3...bed plate body, 31...first bed plate, 32...second bed plate, 33...third bed plate, 41, 42, 43...cover, 5...stopper, 51...holder part, 52...mattress support part, 53...regulating part, 530...pin, 531...groove, EP1...first engagement part, H1...first engagement hole, EP2...second engagement part, H2 (H2L, H2S)...second engagement hole, 31L, 31S...slit.

Claims (6)

a floor plate body including a first floor plate and a second floor plate aligned in a longitudinal direction;
a bed frame supporting the bed plate body so that the first bed plate and the second bed plate are relatively movable in the longitudinal direction;
A fastener that can be attached to a side portion of the floor plate body;
Equipped with
The stopper is
a holder portion including a pair of holding plates facing each other and a connection portion connecting the pair of holding plates;
A mattress receiving portion protruding from the holder portion above the floor plate body;
a pin extending from the connection portion between the pair of retaining plates and restricting relative movement of the first floor plate and the second floor plate in the longitudinal direction;
A bed apparatus comprising: a floor plate body including a first floor plate and a second floor plate aligned in a longitudinal direction;
a bed frame supporting the bed plate body so that the first bed plate and the second bed plate are relatively movable in the longitudinal direction;
A cover attached to a side portion of the second floor panel and movable together with the second floor panel;
A fastener that can be attached to a side portion of the floor plate body;
Equipped with
The stopper is
A mattress receiving portion protruding upward from the floor plate body;
a restricting portion that restricts relative movement of the first floor plate and the second floor plate in the longitudinal direction;
Including,
the cover has a first engagement portion engageable with the restriction portion,
The bed frame has a second engagement portion that can be engaged with the restriction portion,
When the regulating portion engages with the first engaging portion and the second engaging portion, the relative movement of the first floor plate and the second floor plate in the longitudinal direction is regulated.
Bed equipment. The bed frame is
a first frame having the second engagement portion and supporting the first floor panel;
a second frame attached to the first frame so as to be movable in the longitudinal direction and supporting the second floor panel;
Including,
The bed apparatus according to claim 2. The first engagement portion includes a first engagement hole,
The second engagement portion includes a plurality of second engagement holes aligned in the longitudinal direction,
The restriction portion includes a pin that can be inserted into the first engagement hole and the second engagement hole.
4. The bed apparatus according to claim 2 or 3. the first floor plate has a plurality of slits that overlap the plurality of second engagement holes,
The pin has a groove on its outer circumferential surface that can engage with the slit.
The bed apparatus according to claim 4. a floor plate body including a first floor plate and a second floor plate aligned in a longitudinal direction;
a bed frame supporting the bed plate body so that the first bed plate and the second bed plate are relatively movable in the longitudinal direction;
A cover attached to a side portion of the second floor panel and movable together with the second floor panel;
A fastener that can be attached to a side portion of the floor plate body;
Equipped with
The stopper includes a restricting portion that restricts relative movement of the first floor plate and the second floor plate in the longitudinal direction,
the cover has a first engagement portion engageable with the restriction portion,
The bed frame is
a first frame having a second engagement portion engageable with the restriction portion and supporting the first floor plate;
a second frame attached to the first frame so as to be movable in the longitudinal direction and supporting the second floor panel;
Including,
A bed apparatus, wherein the regulating portion engages with the first engagement portion and the second engagement portion, thereby regulating relative movement of the first bed plate and the second bed plate in the longitudinal direction.

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