JP7724331B2 - bed - Google Patents

Description

An embodiment of the present invention relates to a bed.

There are cases where the width of a bed needs to be changed depending on the user's body type or the space in the room where it will be installed. In such cases, replacing the bed with one of a different width can be time-consuming. Furthermore, multiple beds with different widths must be manufactured, which can increase costs.

Japanese Patent Application Laid-Open No. 2000-189284

An object of an embodiment of the present invention is to provide a bed whose width can be easily adjusted.

The bed according to this embodiment comprises multiple bottoms arranged in the front-to-rear direction on a frame, and detachable end members attached to the ends of the bottoms, and the end members can be attached to the ends of the bottoms in a number of different ways.

Embodiments of the present invention provide a bed whose width can be easily adjusted.

1 is a perspective view showing a bed according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state in which a bottom is removed from the frame in FIG. 1 . 2 is an exploded perspective view showing a state in which a first edge member in FIG. 1 is removed from an end portion of the bottom. FIG. 4 is an exploded perspective view of the first edge member and the bottom in FIG. 3, as viewed obliquely from above right. FIG. FIG. 10 is a plan view showing a state in which the first edge member is inserted into the bottom. 6 is a cross-sectional view of the first edge member and the bottom in FIG. 5, as viewed from the direction of arrows A-A. 6 is a cross-sectional view of the first edge member and the bottom in FIG. 5, as viewed from the direction of arrows B-B. 10 is a plan view showing a state in which the first edge member is inserted into the bottom in an inverted state. FIG. 9 is a cross-sectional view of the first edge member and the bottom in FIG. 8, as viewed from the direction of arrows CC. 9 is a cross-sectional view of the first edge member and the bottom in FIG. 8, as viewed from the direction of arrows DD. FIG. 4 is an exploded perspective view similar to FIG. 3, showing a state in which the first edge member has been removed from the end of the bottom. 12 is an exploded perspective view of the first edge member and the bottom in FIG. 11 as viewed from diagonally above right. FIG. FIG. 2 is a plan view showing the second edge member, mattress stopper, and bottom in FIG. 1 . 14 is a cross-sectional view of the second edge member, mattress stopper, and bottom in FIG. 13 as viewed from the direction of arrows E-E. FIG. 15 is a cross-sectional view similar to FIG. 14, showing the mattress stopper set to a narrow width. 10 is an exploded perspective view showing the second edge member removed from the bottom and the mattress stopper removed from the second edge member. FIG. FIG. 10 is an exploded perspective view showing a third edge member according to a first modified example. FIG. 10 is an exploded perspective view showing a fourth edge member according to a second modified example. 11A and 11B are a plan view and a side view showing a fifth edge member according to a third modified example. FIG. 13 is a side view showing a sixth edge member according to a fourth modified example. 13A and 13B are a plan view and a side view showing a seventh edge member according to a fifth modified example. FIG. 13 is a side view showing an eighth edge member according to a sixth modified example.

A bed according to an embodiment of the present invention will be described with reference to FIGS. 1 to 15. FIG.
FIG. 1 is a perspective view showing a bed according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a state in which the bottom is removed from the frame in FIG.

The bed 10 shown in Figure 1 is an electric bed that can be used, for example, in nursing homes, hospitals, and private homes, and whose backrest, height, etc. can be electrically operated. However, the bed 10 is not limited to an electric bed. The bed 10 comprises a frame 12, a plurality of bottoms 20 arranged in the front-to-back direction on the frame 12, and a first edge member 30 attached to the end 24a of the bottoms 20. In the bed 10 shown in Figure 1, the head side is diagonally upward to the left in Figure 1, and the foot side is diagonally downward to the right in Figure 1. In this embodiment, the direction between the head side and the foot side is defined as the front-to-back direction.

As shown in Figure 2, the frame 12 is located above the legs 14 and is formed in an overall frame shape. The frame 12 is made up of, for example, multiple plate members connected in the front-to-rear direction. The frame 12 has, for example, a separable head-side frame 12a and a foot-side frame 12b. This allows the bed 10 to be separated, for example, into multiple units and transported into a room where the bed 10 is to be installed. In addition, the frame 12 can be moved up and down relative to the legs 14 by a drive unit provided within the frame 12.

Multiple bottoms 20 are arranged in a line in the front-to-back direction on the frame 12. A mattress (not shown) is placed on top of the bottoms 20, which support the mattress and the human body on the mattress. The bottoms 20 have a back bottom 20a located at the head side to support the back, a waist bottom 20b located behind the back bottom 20a to support the waist, a knee bottom 20c located behind the waist bottom 20b to support the knees, and a foot bottom 20d located behind the knee bottom 20c to support the feet. The back bottom 20a, waist bottom 20b, knee bottom 20c, and foot bottom 20d can each be bent upward by a drive unit located within the frame 12.

An end member is detachably attached to the end 24a of the bottom 20. This end member has mattress stops 60 for the first edge member 30 and second edge member 50, which will be described later. The end member can be attached to the end 24a of the bottom 20 in a number of different ways.

FIG. 3 is an exploded perspective view showing a state in which the first edge member in FIG. 1 has been removed from the end of the bottom.
4 is an exploded perspective view of the first edge member and the bottom in FIG. 3 as viewed obliquely from above on the right.
FIG. 5 is a plan view showing a state in which the first edge member is inserted into the bottom.
6 is a cross-sectional view of the first edge member and the bottom in FIG. 5, as viewed from the direction of arrows AA.
7 is a cross-sectional view of the first edge member and the bottom in FIG. 5, as viewed from the direction of arrows BB.
FIG. 8 is a plan view showing a state in which the first edge member is inserted into the bottom in an inverted state.
9 is a cross-sectional view of the first edge member and the bottom in FIG. 8, as viewed from the direction of arrows CC.
10 is a cross-sectional view of the first edge member and the bottom in FIG. 8, as viewed from the direction of arrows DD.
FIG. 11 is an exploded perspective view similar to FIG. 3, showing the first edge member removed from the end of the bottom.
12 is an exploded perspective view of the first edge member and the bottom in FIG. 11 as viewed from diagonally above right.

As shown in Figure 3, the bottom 20 has a pair of cylindrical portions 22 that face each other in the front-rear direction and extend in the left-right direction, an upper surface portion 24 connecting the upper ends of the pair of cylindrical portions 22, and a side surface portion 28 that extends downward from the left-right end 24a of the upper surface portion 24. While Figure 3 only shows one end 24a of the bottom 20, the other end is formed in the same manner. The upper surface portion 24 has a recess 26 that recesses downward from the upper surface 24b. The side surface 26a of this recess 26 is formed at a position that corresponds to the engaging portion 45 of the first edge member 30, which will be described later.

The side surface portion 28 extends from the end 24a of the upper surface portion 24 to partway along the thickness direction (vertical direction) of the bottom 20. That is, the end 24a side of the side surface portion 28 is a fixed end, and the lower end is a free end. The side surface portion 28 is located on the end 24a side and extends in the vertical direction. The vertical dimension L1 of the side surface portion 28 is set to correspond to the dimension L2 between the rib 40 of the first edge member 30 and the other side surface portion 34, which will be described later. These dimensions L1 and L2 will be explained later.

The extension portion 29 extends downward from the center of the side portion 28 in the front-to-rear direction. This extension portion 29 is located above the lower end of the bottom 20 and is located inside the first edge member 30 when the first edge member 30 (described below) is attached to the end portion 24a of the bottom 20. The extension portion 29 engages with the engagement portion 45 of the first edge member 30 (described below).

Next, we will explain the first edge member 30 (end member) provided at the end 24a of the bottom 20.

The first edge member 30 is made of, for example, a resin or metal material and is formed into a cylindrical shape with a bottom. The first edge member 30 is detachably attached to the end 24a of the bottom 20. The first edge member 30 can be rotated 180 degrees vertically and attached to the bottom 20, allowing the amount of protrusion from the end 24a (side surface 28) of the bottom 20 to be changed.

The first edge member 30 has one side portion 32 located on one side in the vertical direction, the other side portion 34 facing the one side portion 32 in the vertical direction, an opening 36 into which the end portion 24a of the bottom 20 is inserted, and a bottom portion 38 facing the opening 36. The first edge member 30 (end member) can be attached to the same position on the end portion 24a of the bottom 20 by flipping it over vertically or horizontally.

The one side surface portion 32 and the other side surface portion 34 become the upper surface portion or the lower surface portion of the first edge member 30 depending on how the first edge member 30 is attached to the end portion 24a of the bottom 20. Specifically, as shown in Figures 1 to 7, when the left-right width dimension of the bed 10 is set wide, the one side surface portion 32 becomes the upper surface portion and the other side surface portion 34 becomes the lower surface portion. On the other hand, as shown in Figures 8 to 12, when the left-right width dimension of the bed 10 is set narrow, the one side surface portion 32 becomes the lower surface portion and the other side surface portion 34 becomes the upper surface portion. In other words, as shown in Figure 8, when the other side surface portion 34 is set as the upper surface portion, the insertion depth of the bottom 20 is deeper than when the one side surface portion 32, indicated by the two-dot chain line, is set as the upper surface portion.

The front-to-rear ends of the one side portion 32 and the other side portion 34 are connected by a curved side surface 35 formed to correspond to the external shape of the cylindrical portion 22 of the bottom 20. The opening 36 is shaped by the one side portion 32, the other side portion 34, and the curved side surface 35 to correspond to the end portion 24a of the bottom 20.

The bottom portion 38 has a shallow portion 38a that comes into contact with the side portion 28 when the end portion 24a of the bottom 20 is inserted through the opening 36 with one side portion 32 as the upper surface, and a deep portion 38b that comes into contact with the side portion 28 when the end portion 24a of the bottom 20 is inserted through the opening 36 with the other side portion 34 as the upper surface.

The shallow bottom portion 38a and the deep bottom portion 38b are formed by ribs 40 provided inside the first edge member 30. Specifically, the ribs 40 extend from one side portion 32 toward the other side portion 34 and protrude from the deep bottom portion 38b toward the opening 36, with the protruding end surface forming the shallow bottom portion 38a. In this embodiment, for example, four ribs 40 are provided. The number of ribs 40 may be one to three, or five or more.

As shown in Figures 5 to 7, when one side surface portion 32 is attached to the end portion 24a of the bottom 20 as the upper surface portion, the shallow bottom portion 38a, which is the protruding end surface of the rib 40, comes into contact with the side surface portion 28 of the bottom 20.

This prevents the first edge member 30 from being inserted further into the bottom 20. As shown in Figure 7, the first edge member 30 protrudes from the end 24a of the bottom 20 by a dimension W1, allowing the width of the bed 10 to be set wider.

Furthermore, by being connected to the one side portion 32, the rib 40 also serves as a reinforcing member that reinforces the one side portion 32. As shown in FIG. 7, the back surface 32a of the one side portion 32 comes into contact with the top surface 24 of the bottom 20. For example, when a user of the bed 10 sits on the edge of the end 24a of the bottom 20, force (body weight) may be applied from above to the one side portion 32. Even in such cases, the force can be absorbed by the top surface 24 of the bottom 20 and the rib 40, preventing deformation of the one side portion 32.

The dimension L2 between the rib 40 and the other side surface portion 34 is larger than the vertical dimension L1 of the side surface portion 28 of the bottom 20. As a result, as shown in Figure 9, a space S1 is formed between the rib 40 and the other side surface portion 34, into which the side surface portion 28 is inserted. Furthermore, the dimension L3 between the two central ribs 40 of the four ribs 40 is larger than the front-to-rear dimension L4 of the extension portion 29 of the bottom 20. As a result, a space S2 is formed between the two central ribs 40, into which the extension portion 29 is inserted.

As shown in Figures 8 to 10, when the end 24a of the bottom 20 is inserted through the opening 36 with the other side surface 34 of the first edge member 30 as the upper surface, the side surface 28 of the bottom 20 is inserted into the space S1 between the rib 40 and the other side surface 34, and the side surface 28 comes into contact with the deep bottom portion 38b.

This prevents the first edge member 30 from being inserted further into the bottom 20. As shown in Figure 10, the first edge member 30 protrudes a distance W2 from the end 24a of the bottom 20, allowing the width of the bed 10 to be narrowed. In other words, because the first edge member 30 is attached to both ends of the bottom 20, the width of the bed 10 can be reduced by 2 x (W1 - W2).

In this case, as shown in Figure 10, the other side surface portion 34 comes into contact with the top surface portion 24 of the bottom 20 over a wide area of the back surface 34a. As a result, even if a force (body weight) is applied from above the other side surface portion 34, for example, when a user of the bed 10 sits on the edge of the end portion 24a of the bottom 20, the force can be received by the top surface portion 24 of the bottom 20. Therefore, deformation of the other side surface portion 34 can be suppressed.

The engagement portion 45 is provided on the other side surface portion 34. The engagement portion 45 extends from the surface 34b of the other side surface portion 34 toward the inside of the first edge member 30. The engagement portion 45 is provided at a position corresponding to the recess 26 of the bottom 20 and the extension portion 29 of the bottom 20.

As shown in Figures 7 and 10, the tip 45a of the engagement portion 45 is located closer to the opening 36 than the shallow bottom portion 38a. As shown in Figure 7, when the end 24a of the bottom 20 is inserted through the opening 36 with one side surface portion 32 serving as the upper surface, the engagement portion 45 engages with the back surface 29a of the extension portion 29, thereby preventing it from coming loose.

On the other hand, as shown in Figure 10, when the end 24a of the bottom 20 is inserted through the opening 36 with the other side surface 34 serving as the upper surface, the engaging portion 45 engages with the side surface 26a of the recess 26, preventing it from coming loose. The engaging portion 45 can be released by pressing it toward the surface 34b of the other side surface 34.

Next, the second edge member 50 provided on a bottom 20 different from the bottom 20 on which the first edge member 30 is provided will be described.
13 is a plan view showing the second edge member, mattress stopper (end member), and bottom in FIG. 1. FIG.
14 is a cross-sectional view of the second edge member, mattress stopper, and bottom in FIG. 13, as viewed in the direction of arrows E--E.
FIG. 15 is a cross-sectional view similar to FIG. 14, showing the mattress stopper set to a narrow width.
FIG. 16 is an exploded perspective view showing the second edge member removed from the bottom and the mattress stopper removed from the second edge member.
The mattress stop 60 (end member) can be moved horizontally on the top surface of the end 24a of the bottom 20 and attached at a number of different positions.

The second edge member 50 is made of, for example, a resin material or a metal material, and has an upper surface portion 51, a lower surface portion 52, a curved side surface 53, and a bottom portion 54. The second edge member 50 has an opening portion 55 formed facing the bottom portion 54. In other words, the second edge member 50 is formed in a cylindrical shape with a bottom.

The second edge member 50 is provided across multiple bottoms 20 adjacent in the front-to-rear direction. As shown in FIG. 1, the second edge member 50 is provided, for example, on the back bottom 20a or the foot bottom 20d. In other words, the second edge member 50 is provided between the bottoms 20 that are not bent by the drive unit.

The second edge member 50 has a mattress stopper attachment portion 51a on its upper surface 51. This mattress stopper attachment portion 51a is located, for example, between adjacent bottoms 20. The mattress stopper attachment portion 51a has a first through hole 56 and a second through hole 57 that penetrate from the upper surface 51 to the lower surface 52. The first through hole 56 and the second through hole 57 are aligned in the left-right direction. Mattress stoppers 60 can be removably attached to the first through hole 56 and the second through hole 57.

As shown in Figures 14 and 15, the underside 52 of the second edge member 50 has an engagement portion 58. This engagement portion 58 is formed similarly to the engagement portion 45 of the first edge member 30 and engages with the extension portion 29 of the bottom 20. The second edge member 50 is prevented from coming loose by the engagement of the engagement portion 58 with the extension portion 29. The engagement portion 58 may be provided corresponding to at least one of the bottoms 20 to which the second edge member 50 is attached, or may be provided corresponding to each of multiple bottoms 20.

The mattress stopper 60 is detachably attached to the mattress stopper attachment portion 51a. This mattress stopper 60 prevents a mattress (not shown) placed on the upper surface 24 of the bottom 20 from shifting. The mattress stopper 60 has a horizontal plate portion 62 attached to the mattress stopper attachment portion 51a, a first protrusion 64 and a second protrusion 66 extending downward from the horizontal plate portion 62 and aligned in the left-right direction, and a restricting portion 68 extending upward from the end of the horizontal plate portion 62 opposite the bottom 20.

The mattress stopper 60's protrusion from the end 24a of the bottom 20 can be adjusted. Specifically, as shown by the dotted line in Figure 16, the mattress stopper 60 is set to a wide width by inserting the first protrusion 64 into the first through-hole 56 and the second protrusion 66 into the second through-hole 57, and attaching the horizontal plate 62 to the mattress stopper attachment portion 51a (as shown in Figures 13 and 14). In this case, the protrusion of the mattress stopper 60 from the end 24a of the bottom 20 corresponds to when it is attached to the bottom 20 with one side surface 32 of the first edge member 30 serving as the upper surface.

On the other hand, as shown by the dashed line in Figure 16, the mattress stopper 60 is narrowed by inserting the first protrusion 64 into the opening 55 and the second protrusion 66 into the first through-hole 56, and attaching the horizontal plate 62 to the mattress stopper attachment portion 51a (the state shown in Figure 15). In this case, the protrusion dimension of the mattress stopper 60 from the end 24a of the bottom 20 corresponds to when it is attached to the bottom 20 with the other side portion 34 of the first edge member 30 as the upper surface.

Thus, the bed 10 according to this embodiment comprises a plurality of bottoms 20 arranged in the front-to-rear direction on the frame 12, and a bottomed, cylindrical first edge member 30 attached to the end 24a of the bottom 20. The bottoms 20 have side portions 28 located on the left-to-right end side and extending in the up-down direction. The first edge member 30 has one side portion 32 located on one side in the up-down direction, the other side portion 34 facing the one side portion 32, an opening 36 through which the end 24a of the bottom 20 is inserted, and a bottom portion 38 facing the opening 36. The bottom portion 38 has a shallow bottom portion 38a with which the side portion 28 comes into contact when the end 24a of the bottom 20 is inserted through the opening 36 with the one side portion 32 as the upper surface, and a deep bottom portion 38b with which the side portion 28 comes into contact when the end 24a of the bottom 20 is inserted through the opening 36 with the other side portion 34 as the upper surface.

As a result, when the first edge member 30 is attached to the bottom 20 with one side surface portion 32 serving as the upper surface, the bed 10 can be set to a wide width. On the other hand, when the first edge member 30 is attached to the bottom 20 with the other side surface portion 34 serving as the upper surface, the bed 10 can be set to a narrow width. In other words, by simply flipping the attachment orientation of the first edge member 30 upside down, the width of the bed 10 can easily be changed from wide to narrow or from narrow to wide.

The side surface portion 28 extends downward from the upper surface portion 24 of the bottom 20, and the bottom portion 38 extends from one side surface portion 32 toward the other side surface portion 34. It has a rib 40 that protrudes from the deep bottom portion 38b toward the opening 36, with the protruding end surface becoming the shallow bottom portion 38a. When the end portion 24a of the bottom 20 is inserted through the opening 36 with the other side surface portion 34 as the upper surface, the side surface portion 28 is inserted into the space S1 between the rib 40 and the other side surface portion 34.

As a result, the ribs 40 function as spacers that set the width dimension of the bed 10 and as reinforcements that reinforce the first edge member 30. Therefore, for example, when a user of the bed 10 sits on the edge of the bed 10, deformation of the first edge member 30 can be prevented even if a force (body weight) is applied from above the first edge member 30.

Furthermore, the side surface portion 28 has an extension portion 29 that extends downward, and the other side surface portion 34 has an engagement portion 45 that engages with the extension portion 29 when the end portion 24a of the bottom 20 is inserted through the opening 36 with the one side surface portion 32 serving as the upper surface.

The top surface 24 of the bottom 20 has a recess 26 that is recessed downward, and the engagement portion 45 engages with the recess 26 when the end 24a of the bottom 20 is inserted through the opening 36 with the other side surface 34 serving as the top surface.

This prevents the first edge member 30 from slipping off the bottom 20 due to, for example, friction with the mattress.

Furthermore, when the end portion 24a of the bottom 20 is inserted through the opening 36 with the other side portion 34 serving as the upper surface, the other side portion 34 comes into contact with the upper surface portion 24 of the bottom 20.

As a result, even if a force (body weight) is applied from above the first edge member 30 when a user of the bed 10 sits on the edge of the bed 10, the force can be received by the top surface 24 of the bottom 20 via the other side surface 34 of the first edge member 30. Therefore, deformation of the first edge member 30 can be suppressed.

A second edge member 50 is provided on one of the bottoms 20 other than the bottom 20 on which the first edge member 30 is provided. The second edge member 50 has a mattress stopper 60 that prevents a mattress placed on the bottom 20 from shifting, and the amount of protrusion of the mattress stopper 60 from the end 24a of the bottom 20 can be changed.

This allows the protruding dimension of the mattress stopper 60 to be easily changed, preventing the mattress from shifting even when changing to a mattress of a different width.

The second edge member 50 is also provided across multiple bottoms 20 adjacent in the front-to-rear direction.

This allows the second edge member 50 to be attached to multiple bottoms 20 at once, improving the workability of attaching the second edge member 50 to the bottoms 20 and reducing the number of parts required.

As shown in Figure 1, both the first edge member 30 and the second edge member 50 are attached to the bed 10. A single second edge member 50 can be installed across multiple bottoms 20, which improves the workability of attaching it to the bottoms 20 and reduces the number of parts. On the other hand, if the bed 10 shown in Figure 1 has a back bottom 20a, knee bottom 20c, and foot bottom 20d that can be bent by a drive unit, the locations where the second edge member 50 can be attached are limited.

As shown in Figure 1, the bed 10 can be provided with a first edge member 30 on the bottom 20 around the lumbar bottom 20b, where users often sit on the edge of the bottom 20 at the end 24a side, and a second edge member 50 on the bottom 20 around the back bottom 20a and foot bottom 20d, where users rarely sit on the edge of the mattress. In other words, the first edge member 30 can support the edge of the mattress whether it is set to a wide width or a narrow width. Therefore, the first edge member 30 can improve stability when sitting on the edge of the mattress.

This allows the bed 10 to improve the ease of attaching the first and second edge members 30, 50 to the bottom 20 and reduce the number of parts. In this way, by appropriately combining the first edge member 30 and the second edge member 50, it is possible to provide a bed 10 that improves the ease of attaching them to the bottom 20 and improves the convenience of the bed 10.

Next, FIG. 17 shows a third edge member according to a first modified example.
Figure 17 is an exploded perspective view showing a third edge member according to the first modified example. Figure 17(a) is an exploded perspective view showing the bottom 70 and the third edge member 72 when set to a wide width. Figure 17(b) is an exploded perspective view showing the bottom 70 and the third edge member 72 when set to a narrow width. The third edge member 72 (end member) can be attached to the same position on the end of the bottom 70 by flipping it upside down or horizontally.

The bottom 70 has an internal thread 71 that penetrates in the vertical direction. The third edge member 72 has a through hole 73 that penetrates in the vertical direction at a position corresponding to the internal thread 71. This through hole 73 is formed in a position shifted toward one of the left and right ends of the third edge member 72. As a result, the third edge member 72 can be rotated 180 degrees and the bolt 74 threaded into the internal thread 71 to change the amount of protrusion from the bottom 70. Note that the third edge member 72 may be attached to the bottom 70 with a pin member instead of the bolt 74.

Next, FIG. 18 shows a fourth edge member (end member) according to a second modified example.
FIG. 18 is an exploded perspective view showing a fourth edge member according to a second modified example. FIG. 18( a) is an exploded perspective view showing the bottom 70 and the fourth edge member 75 when the width is set to be wide. FIG. 18( b) is an exploded perspective view showing the bottom 70 and the fourth edge member 75 when the width is set to be narrow. The fourth edge member 75 (end member) can be attached to the same position on the end of the bottom 70 by flipping it up and down or horizontally. The fourth edge member 75 can be attached to multiple different positions by moving it left and right on the end of the bottom 70. The fourth edge member 75 can be attached to multiple different positions by moving it horizontally on the upper or lower surface of the end of the bottom 70.

The fourth edge member 75 is used in place of the third edge member 72. The fourth edge member 75 has a first through hole 76 and a second through hole 77 aligned in the left-right direction. The projection dimension of the fourth edge member 75 from the bottom 70 can be changed by threading a bolt 74 through the first through hole 76 or the second through hole 77 and into the internal thread 71.

Next, FIG. 19 shows a fifth edge member (end member) according to a third modified example.
19A and 19B are plan and side views showing a fifth edge member according to a third modified example. Fig. 19A is a plan view when the width is set to be narrow. Fig. 19B is a side view when the width is set to be narrow. Fig. 19C is a plan view when the width is set to be wide. Fig. 19D is a side view when the width is set to be wide. The fifth edge member 81 (end member) can be attached to the same position on the end of the bottom 80 by flipping it upside down or horizontally.

A fifth edge member 81 is provided at the end of the bottom 80. This fifth edge member 81 is foldable relative to the bottom 80. A bendable thin plate portion 82, for example, is provided between the bottom 80 and the fifth edge member 81. As shown in Figures 19(a) and (b), the fifth edge member 81 can be set to a narrow width by folding it onto the bottom 80. On the other hand, as shown in Figures 19(c) and (d), the fifth edge member 81 can be set to a wide width by opening it from the bottom 80.

Next, FIG. 20 shows a sixth edge member (end member) according to a fourth modified example.
20A and 20B are side views showing a sixth edge member according to a fourth modified example. Fig. 20A is a side view showing a case where the sixth edge member 86 is set to a narrow width. Fig. 20B is a side view showing a case where the sixth edge member 86 is set to a wide width. The sixth edge member 86 can be attached at a plurality of different positions by moving it in the left-right direction of the end of the bottom 85. The sixth edge member 86 can be attached at a plurality of different positions by moving it in the horizontal direction on the upper or lower surface of the end of the bottom 85.

A sixth edge member 86 is provided at the end of the bottom 85. This sixth edge member 86 is slidable left and right (widthwise) relative to the bottom 85. By adjusting the sliding position, the sixth edge member 86 can precisely adjust the protrusion dimension from the bottom 85.

Next, FIG. 21 shows a seventh edge member (end member) according to a fifth modified example.
FIG. 21 shows a plan view and a side view of a seventh edge member according to a fifth modified example. FIG. 21( a) is a plan view when the width is set to a narrow value. FIG. 21( b) is a side view when the width is set to a narrow value. The seventh edge member 95 can be attached at a plurality of different positions by moving it vertically along the end of the bottom 90. The seventh edge member 95 is provided across a plurality of bottoms 90 that are adjacent to each other in the front-to-rear direction and bend, and includes a pivoting portion (hinge portion 98) that pivots in accordance with the bending of the bottom 90. The seventh edge member 95 can be attached at a plurality of different positions by moving it horizontally along the end of the bottom 90.

In the above-described embodiment, an example was described in which the first edge member 30 was attached to multiple bottoms 20. However, as shown in Figure 21, a seventh edge member 95 with a variable width may also be provided on the frame-shaped bottom 90.

The bottom 90 has, for example, a back bottom 90a and a leg bottom 90b. The angle of the back bottom 90a can be changed relative to the leg bottom 90b, for example, by a drive unit (not shown). A through-hole 92 that passes through in the vertical direction is formed in the pipe 91a of the back bottom 90a. Meanwhile, a through-hole 92 that passes through in the vertical direction is also formed in the pipe 91b of the leg bottom 90b.

The seventh edge member 95 includes a back bottom edge member 95a that is attached to the back bottom 90a, and a leg bottom edge member 95b that is attached to the leg bottom 90b. The back bottom edge member 95a is formed in a U-shape that allows the pipe 91a to be inserted therein, for example. The back bottom edge member 95a has a first insertion hole 96 and a second insertion hole 97 that penetrate vertically and are aligned in the left-right direction (width direction). The leg bottom edge member 95b is formed in the same manner as the back bottom edge member 95a. The back bottom edge member 95a and the leg bottom edge member 95b are rotatably connected by a hinge portion 98.

The seventh edge member 95 can be made narrow by inserting the pin member 99 from the first insertion hole 96 into the through hole 92. On the other hand, the seventh edge member 95 can be made wide by inserting the pin member 99 from the second insertion hole 97 into the through hole 92.

FIG. 22 is a side view showing an eighth edge member according to the sixth modified example.
In the above-described embodiment, the first edge member 30 is described as being movable up and down and attachable to the bottom 20. However, as shown in Fig. 22, an eighth edge member 101 (end member) may be provided that is movable up and down relative to the bottom 100. That is, the eighth edge member 101 can be attached at a plurality of different positions by moving it up and down at the end of the bottom 100.

In the above-described embodiment, the side surface portion 28 extends downward from the upper surface portion 24. However, the present invention is not limited to this. For example, the side surface portion may extend upward from the lower surface of the bottom. In this case, the first edge member 30 has one side surface portion 32 as the other side surface portion and the other side surface portion 34 as one side surface portion.

Furthermore, in the above-described embodiment, an example was described in which the shallow bottom portion 38a and the deep bottom portion 38b were formed by the rib 40. However, the present invention is not limited to this, and for example, a stepped bottom portion may be formed inside the first edge member 30.

Furthermore, in the above-described embodiment, an example was described in which the second edge member 50 was attached across multiple bottoms 20. However, the present invention is not limited to this, and for example, a second edge member having a mattress stopper may be attached to a single bottom.

The above-described embodiments are examples of realizing the present invention, and the present invention is not limited to these embodiments. For example, the present invention also includes embodiments in which some components are added, deleted, or modified.

10: Bed 12: Frame 12a: Head-side frame 12b: Foot-side frame 14: Legs 20: Bottom 20a: Back bottom 20b: Waist bottom 20c: Knee bottom 20d: Foot bottom 22: Cylindrical portion 24: Upper surface portion 24a: End portion 24b: Upper surface 26: Recess 26a: Side surface 28: Side portion 29: Extension portion 29a: Back surface 30: First edge member 32: One side surface portion 32a: Back surface 34: Other side surface portion 34a: Back surface 34b: Front surface 35: Curved side surface 36: Opening 38: Bottom portion 38a: Shallow bottom portion 38b: Deep bottom portion 40: Rib 45: Engagement portion 45a: Tip 50: Second edge member 51: Upper surface portion 51a: Mattress stopper attachment portion 52: Lower surface portion 53: Curved surface portion 54: Bottom portion 55: Opening 56: First through hole 57: Second through hole 58: Engagement portion 60: Mattress stopper 62: Horizontal plate portion 64: First protrusion 66: Second protrusion 68: Restriction portion 70: Bottom 71: Female thread 72: Third edge member 73: Through hole 74: Bolt 75: Fourth edge member 76: First through hole 77: Second through hole 80: Bottom 81: Fifth edge member 82: Thin plate portion 85: Bottom 86: Sixth edge member 90: Bottom 90a: Back bottom 90b: Leg bottom 91a: Pipe 91b: Pipe 92: Through hole 95: Seventh edge member 95a: Back bottom edge member 95b: Leg bottom edge member 96: First insertion hole 97: Second insertion hole 98: Hinge member 99: Pin member

Claims (4)

A plurality of bottoms are provided on the frame and arranged in the front-to-rear direction;
an end member that is removably provided at an end of the bottom,
The end member is inserted into the end of the bottom in either a first direction or a second direction in which the end member is inverted as a whole,
With the bottom attached to the frame in a horizontal position,
a first protrusion dimension from an end of the bottom when the end member is inserted into the bottom in the first direction;
and a second protruding dimension from the end of the bottom when the end member is inserted into the bottom in the second direction.
A bed characterized by: The end member is inserted into the end of the bottom in either the first direction or the second direction in which the end member as a whole is inverted upside down.
2. A bed according to claim 1. the end member is a first edge member having a bottomed cylindrical shape,
a second edge member provided on one of the bottoms other than the bottom on which the first edge member is provided,
The second edge member has a mattress stopper that prevents a mattress placed on the bottom from slipping,
3. The bed according to claim 1, wherein the mattress stopper has a variable projection dimension from the end of the bottom. The bed according to claim 3, wherein the second edge member is provided across a plurality of the bottoms adjacent to each other in the front-rear direction.