bed

Abstract

To provide a bed capable of simply performing width adjustment.SOLUTION: A bed includes: a plurality of bottoms arranged on a frame and aligned in a front and rear direction; and attachable / detachable end part members arranged at end parts of the bottoms. The end part members are to be attached to the bottom end parts in a plurality of different attachment methods.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] FIELD OF THE INVENTION An embodiment of the present invention relates to a bed. [Background technology]

[0002] 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 it is installed in. In such cases, replacing a bed with one of a different width can be time-consuming. In addition, multiple beds with different widths must be manufactured, which can increase costs. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-189284 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of an embodiment of the present invention is to provide a bed that can be easily adjusted in width. [Means for solving the problem]

[0005] The bed according to the embodiment comprises a plurality of bottoms arranged in the front-to-back direction on a frame, and detachable end members attached to the ends of the bottoms, and the end members have a plurality of different attachment methods for the bottom ends. [Effects of the Invention]

[0006] According to an embodiment of the present invention, a bed whose width can be easily adjusted can be provided. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view showing a bed according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view showing a state in which a bottom is removed from the frame in FIG. [Figure 3] 2 is an exploded perspective view showing a state in which a first edge member in FIG. 1 has been removed from an end portion of the bottom. FIG. [Figure 4] 4 is an exploded perspective view of the first edge member and the bottom in FIG. 3, seen obliquely from above right. FIG. [Figure 5] FIG. 10 is a plan view showing a state in which the first edge member is inserted into the bottom. [Figure 6] 6 is a cross-sectional view of the first edge member and the bottom in FIG. 5, as viewed from the direction of the arrow AA. [Figure 7] 6 is a cross-sectional view of the first edge member and the bottom in FIG. 5, as viewed from the direction of arrow BB. [Figure 8] 10 is a plan view showing a state in which the first edge member is inserted into the bottom in an inverted state. FIG. [Figure 9] 9 is a cross-sectional view of the first edge member and the bottom in FIG. 8, as viewed from the direction of arrow CC. [Figure 10] 9 is a cross-sectional view of the first edge member and the bottom in FIG. 8, as viewed in the direction of the arrow DD. [Figure 11] 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. [Figure 12] 12 is an exploded perspective view of the first edge member and the bottom in FIG. 11, viewed obliquely from above right. FIG. [Figure 13] 2 is a plan view showing the second edge member, mattress stopper, and bottom in FIG. 1. FIG. [Figure 14] 14 is a cross-sectional view of the second edge member, the mattress stopper, and the bottom in FIG. 13 as viewed from the direction of arrow EE. [Figure 15] FIG. 15 is a cross-sectional view similar to FIG. 14, showing a case where the mattress stopper is set to a narrow width. [Figure 16] FIG. 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. [Figure 17] FIG. 10 is an exploded perspective view showing a third edge member according to a first modified example. [Figure 18] FIG. 10 is an exploded perspective view showing a fourth edge member according to a second modified example. [Figure 19] 10A and 10B are a plan view and a side view showing a fifth edge member according to a third modified example. [Figure 20] FIG. 11 is a side view showing a sixth edge member according to a fourth modified example. [Figure 21] 13A and 13B are a plan view and a side view showing a seventh edge member according to a fifth modified example. [Figure 22] FIG. 13 is a side view showing an eighth edge member according to a sixth modified example. DETAILED DESCRIPTION OF THE INVENTION

[0008] A bed according to an embodiment of the present invention will be described with reference to FIGS. 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.

[0009] The bed 10 shown in FIG. 1 is an electric bed that can be used in, for example, 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 includes a frame 12, a plurality of bottoms 20 arranged in the front-to-rear direction on the frame 12, and a first edge member 30 provided at an end 24a of the bottoms 20. In the bed 10 shown in FIG. 1, the diagonally upper left side in FIG. 1 is the head side, and the diagonally lower right side in FIG. 1 is the foot side. In this embodiment, the direction between the head side and the foot side is the front-to-rear direction.

[0010] As shown in FIG. 2, the frame 12 is positioned above the legs 14 and is generally formed in a frame shape. The frame 12 is formed, for example, by connecting a plurality of plate members 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 a plurality of 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.

[0011] A plurality of bottoms 20 are provided on the frame 12, lined up in the front-to-rear direction. A mattress (not shown) is placed above the bottoms 20, and the bottoms 20 support the mattress and the human body on the mattress. The bottom 20 has a back bottom 20a located on 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 provided within the frame 12.

[0012] 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.

[0013] 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, viewed obliquely from above 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 arrow AA. 7 is a cross-sectional view of the first edge member and the bottom in FIG. 5 as viewed from the direction of arrow 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 arrow CC. 10 is a cross-sectional view of the first edge member and the bottom in FIG. 8 as viewed from the direction of the arrow DD. FIG. 11 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, viewed obliquely from above and to the right.

[0014] As shown in Fig. 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 that connects the upper ends of the pair of cylindrical portions 22, and a side surface portion 28 that extends downward from a left-right end 24a of the upper surface portion 24. While Fig. 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 an engaging portion 45 of the first edge member 30, which will be described later.

[0015] The side surface portion 28 extends from the end 24a of the upper surface portion 24 to partway in 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 described later.

[0016] The extension portion 29 extends downward from the center in the front-to-rear direction of the side surface portion 28. The 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, which will be described later, is attached to the end portion 24a of the bottom 20. The extension portion 29 engages with an engagement portion 45 of the first edge member 30, which will be described later.

[0017] Next, the first edge member 30 (end member) provided on the end 24a of the bottom 20 will be described.

[0018] The first edge member 30 is made of, for example, a resin material or a metal material, and is formed in 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 in the vertical direction and attached to the bottom 20, so that the projection dimension from the end 24a (side surface portion 28) of the bottom 20 can be changed.

[0019] The first edge member 30 has one side surface portion 32 located on one side in the vertical direction, the other side surface portion 34 facing the one side surface 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 end portion 24a of the bottom 20 at the same position by flipping it over in the vertical or horizontal direction.

[0020] 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 the manner in which the first edge member 30 is attached to the end portion 24a of the bottom 20. Specifically, as shown in FIGS. 1 to 7, when the width dimension in the left-right direction of the bed 10 is set to be 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 FIGS. 8 to 12, when the width dimension in the left-right direction of the bed 10 is set to be narrow, the one side surface portion 32 becomes the lower surface portion and the other side surface portion 34 becomes the upper surface portion. That is, as shown in FIG. 8, when the other side surface portion 34 is set to be 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 to be the upper surface portion.

[0021] Both front-rear end portions of the one side surface portion 32 and the other side surface portion 34 are connected by a curved side surface 35 formed to correspond to the outer shape of the cylindrical portion 22 of the bottom 20. The opening 36 has a shape corresponding to the end portion 24a of the bottom 20 due to the one side surface portion 32, the other side surface portion 34, and the curved side surface 35.

[0022] The bottom portion 38 has a shallow bottom 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 bottom 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.

[0023] 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 surface portion 32 toward the other side surface 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 may be five or more.

[0024] As shown in FIGS. 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.

[0025] 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 wide.

[0026] Furthermore, the rib 40 is connected to the one side surface portion 32, and therefore also serves as a reinforcing member that reinforces the one side surface portion 32. As shown in FIG. 7, the back surface 32a of the one side surface portion 32 comes into contact with the upper surface portion 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 surface portion 32. Even in such a case, the force can be absorbed by the upper surface portion 24 of the bottom 20 and the rib 40, and deformation of the one side surface portion 32 can be suppressed.

[0027] The dimension L2 between the rib 40 and the other side surface portion 34 is larger than the dimension L1 in the up-down direction of the side surface portion 28 of the bottom 20. As a result, as shown in Fig. 9, a space S1 into which the side surface portion 28 is inserted is formed between the rib 40 and the other side surface portion 34. Furthermore, the dimension L3 between two of the four ribs 40 located in the center is larger than the dimension L4 in the front-to-rear direction of the extension portion 29 of the bottom 20. As a result, a space S2 into which the extension portion 29 is inserted is formed between the two central ribs 40.

[0028] Therefore, 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 portion 34 of the first edge member 30 as the upper surface, the side portion 28 of the bottom 20 is inserted into the space S1 between the rib 40 and the other side portion 34, and the side portion 28 comes into contact with the deep bottom portion 38b.

[0029] 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 from the end 24a of the bottom 20 by a dimension W2, allowing the width of the bed 10 to be narrowed. In other words, because the first edge members 30 are attached to both ends of the bottom 20, the width of the bed 10 can be reduced by 2 x (W1 - W2).

[0030] 10, the other side surface portion 34 comes into contact with the upper 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 24a of the bottom 20, the force can be received by the upper surface portion 24 of the bottom 20. Therefore, deformation of the other side surface portion 34 can be suppressed.

[0031] The engaging portion 45 is provided on the other side surface portion 34. The engaging portion 45 extends from the surface 34b of the other side surface portion 34 toward the inside of the first edge member 30. The engaging portion 45 is provided at a position corresponding to the recessed portion 26 of the bottom 20 and the extending portion 29 of the bottom 20.

[0032] 7 and 10, the tip 45a of the engaging portion 45 is located closer to the opening 36 than the shallow bottom portion 38a. As shown in Fig. 7, when the end 24a of the bottom 20 is inserted into the first edge member 30 from the opening 36 with the one side surface portion 32 serving as the upper surface, the engaging portion 45 engages with the back surface 29a of the extending portion 29, thereby preventing it from coming off.

[0033] 10, when the end 24a of the bottom 20 is inserted through the opening 36 with the other side surface portion 34 serving as the upper surface, the first edge member 30 is prevented from coming off by the engagement portion 45 engaging with the side surface 26a of the recess 26. The engagement of the engagement portion 45 can be released by pressing it toward the surface 34b of the other side surface portion 34.

[0034] 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, the mattress stopper (end member), and the bottom in FIG. 14 is a cross-sectional view of the second edge member, mattress stopper, and bottom in FIG. 13 as viewed from the direction of arrow EE. 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.

[0035] 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.

[0036] The second edge member 50 is provided across a plurality of bottoms 20 adjacent to each other in the front-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.

[0037] The second edge member 50 has a mattress stopper attachment portion 51a provided on the upper surface portion 51. This mattress stopper attachment portion 51a is located, for example, between adjacent bottom pieces 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 portion 51 to the lower surface portion 52. The first through hole 56 and the second through hole 57 are aligned in the left-right direction. Mattress stoppers 60 are detachably attached to the first through hole 56 and the second through hole 57.

[0038] 14 and 15, the underside 52 of the second edge member 50 has an engaging portion 58. This engaging portion 58 is formed similarly to the engaging portion 45 of the first edge member 30, and engages with the extending portion 29 of the bottom 20. The second edge member 50 is prevented from coming off by the engaging portion 58 engaging with the extending portion 29. The engaging 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.

[0039] The mattress stopper 60 is detachably attached to the mattress stopper attachment portion 51a. The mattress stopper 60 prevents a mattress (not shown) placed on the upper surface portion 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 portion 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.

[0040] The amount by which the mattress stopper 60 protrudes from the end 24a of the bottom 20 can be changed. 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 portion 62 to the mattress stopper attachment portion 51a (the state in Figures 13 and 14). In this case, the amount by which the mattress stopper 60 protrudes from the end 24a of the bottom 20 corresponds to the amount when the mattress stopper 60 is attached to the bottom 20 with one side surface portion 32 of the first edge member 30 serving as the upper surface.

[0041] On the other hand, as shown by the dashed line in Figure 16, the mattress stopper 60 is set to a narrow width 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 part 51a (the state in Figure 15). In this case, the protrusion dimension of the mattress stopper 60 from the end 24a of the bottom 20 corresponds to the case when it is attached to the bottom 20 with the other side part 34 of the first edge member 30 as the upper surface.

[0042] Thus, the bed 10 of this embodiment comprises a plurality of bottoms 20 arranged on a frame 12 in a line in the front-to-back direction, and a first edge member 30 having a bottomed cylindrical shape and provided at the end 24a of the bottom 20, the bottom 20 having a side portion 28 located on the end side in the left-to-right direction and extending in the up-down direction, the first edge member 30 having 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 into which the end 24a of the bottom 20 is inserted, and a bottom portion 38 facing the opening 36, the bottom portion 38 having a shallow bottom portion 38a with which the side portion 28 comes into contact when the end 24a of the bottom 20 is inserted from 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 from the opening 36 with the other side portion 34 as the upper surface.

[0043] 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 portion, 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 portion, the bed 10 can be set to a narrow width. In other words, the width of the bed 10 can be easily changed from wide to narrow or from narrow to wide simply by flipping the attachment direction of the first edge member 30 upside down.

[0044] In addition, the side portion 28 extends downward from the upper surface portion 24 of the bottom 20, and the bottom portion 38 extends from one side portion 32 toward the other side portion 34 and has a rib 40 that protrudes from the deep bottom portion 38b toward the opening 36 and whose protruding end face becomes the shallow bottom portion 38a, and when the end portion 24a of the bottom 20 is inserted from the opening 36 with the other side portion 34 as the upper surface, the side portion 28 is inserted into the space S1 between the rib 40 and the other side portion 34.

[0045] 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, even if a force (body weight) is applied from above the first edge member 30, deformation of the first edge member 30 can be suppressed.

[0046] In addition, the side portion 28 has an extension portion 29 extending downward, and the other side 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 portion 32 as the upper surface.

[0047] In addition, the top surface portion 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 portion 24a of the bottom 20 is inserted through the opening 36 with the other side surface portion 34 as the top surface.

[0048] This prevents the first edge member 30 from slipping off the bottom 20 due to, for example, friction with the mattress.

[0049] Furthermore, when the end 24 a of the bottom 20 is inserted through the opening 36 with the other side surface 34 serving as the upper surface, the other side surface 34 comes into contact with the upper surface 24 of the bottom 20 .

[0050] As a result, for example, when a user of bed 10 sits on the edge of bed 10, even if force (body weight) is applied from above first edge member 30, the force can be received by top surface portion 24 of bottom 20 via other side surface portion 34 of first edge member 30. Therefore, deformation of first edge member 30 can be suppressed.

[0051] The device is provided with a second edge member 50 provided on a bottom 20 other than the bottom 20 on which the first edge member 30 is provided among the plurality of bottoms 20, and the second edge member 50 has a mattress stopper 60 that prevents a mattress placed on the bottom 20 from shifting, and the mattress stopper 60 has a protruding dimension from the end 24a of the bottom 20 that is changeable.

[0052] This allows the protruding dimension of the mattress stopper 60 to be easily changed, so that the mattress can be prevented from shifting even when changing to a mattress of a different width.

[0053] The second edge member 50 is provided across a plurality of bottoms 20 adjacent to each other in the front-rear direction.

[0054] This allows the second edge members 50 to be attached to a plurality of bottoms 20 at once, improving the workability of attaching the second edge members 50 to the bottoms 20 and reducing the number of parts.

[0055] As shown in Fig. 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 provided across multiple bottoms 20, which improves the workability of attaching the second edge member 50 to the bottoms 20 and reduces the number of parts. On the other hand, when the bed 10 shown in Fig. 1 has a back bottom 20a, a knee bottom 20c, and a foot bottom 20d that can be bent by a drive unit, the locations where the second edge member 50 can be attached are limited.

[0056] As shown in Figure 1, the bed 10 is 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 bed at the end 24a of the bottom 20, 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 bed. In other words, the first edge member 30 can support the edge of the mattress both when set to a wide width and when set to a narrow width. Therefore, the first edge member 30 can improve stability when sitting on the edge of the bed.

[0057] This improves the workability of attaching the first and second edge members 30, 50 to the bottom 20 and reduces the number of parts in the bed 10. 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 workability of attaching the first and second edge members 30, 50 to the bottom 20 and improves the convenience of the bed 10.

[0058] 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.

[0059] 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 end of the third edge member 72 in the left-right direction. As a result, the third edge member 72 can be rotated 180 degrees and a bolt 74 can be 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.

[0060] 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 set to a wide width. FIG. 18(b) is an exploded perspective view showing the bottom 70 and the fourth edge member 75 when set to a narrow width. 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 top or bottom surface of the end of the bottom 70.

[0061] 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 formed side by side 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 into the female thread 71.

[0062] Next, FIG. 19 shows a fifth edge member (end member) according to a third modified example. Figure 19 is a plan view and a side view showing a fifth edge member according to a third modified example. Figure 19(a) is a plan view when set to a narrow width. Figure 19(b) is a side view when set to a narrow width. Figure 19(c) is a plan view when set to a wide width. Figure 19(d) is a side view when set to a wide width. 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.

[0063] A fifth edge member 81 is provided at an end of the bottom 80. This fifth edge member 81 is foldable relative to the bottom 80. For example, a bendable thin plate portion 82 is provided between the bottom 80 and the fifth edge member 81. As shown in FIGS. 19(a) and (b), the fifth edge member 81 can be set to a narrow width by being folded onto the bottom 80. On the other hand, as shown in FIGS. 19(c) and (d), the fifth edge member 81 can be set to a wide width by being opened from the bottom 80.

[0064] Next, FIG. 20 shows a sixth edge member (end member) according to a fourth modified example. Figure 20 is a side view showing a sixth edge member according to the fourth modified example. Figure 20(a) is a side view when the width is set to be narrow. Figure 20(b) is a side view when the width is set to be wide. 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.

[0065] A sixth edge member 86 is provided at an end of the bottom 85. This sixth edge member 86 is slidable in the left-right direction (width direction) relative to the bottom 85. The projection dimension of the sixth edge member 86 from the bottom 85 can be precisely set by adjusting the sliding position.

[0066] Next, FIG. 21 shows a seventh edge member (end member) according to a fifth modified example. FIG. 21 is a plan view and a side view showing a seventh edge member according to the fifth modified example. FIG. 21(a) is a plan view when the width is set to be narrow. FIG. 21(b) is a side view when the width is set to be narrow. The seventh edge member 95 can be attached at a plurality of different positions by moving it in the vertical direction of 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 rotating portion (hinge portion 98) that rotates 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 in the horizontal direction of the end of the bottom 90.

[0067] In the above-described embodiment, an example has been described in which the first edge members 30 are attached to a plurality of bottoms 20. However, as shown in Fig. 21, a seventh edge member 95 whose width dimension is changeable may be provided on a frame-shaped bottom 90.

[0068] 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 penetrates in the vertical direction is formed in the pipe 91a of the back bottom 90a. Meanwhile, a through-hole 92 that penetrates in the vertical direction is also formed in the pipe 91b of the leg bottom 90b.

[0069] The seventh edge member 95 has a back bottom edge member 95a attached to the back bottom 90a and a leg bottom edge member 95b attached to the leg bottom 90b. The back bottom edge member 95a is formed in a U-shape that allows, for example, the pipe 91a to be inserted therein. The back bottom edge member 95a has a first insertion hole 96 and a second insertion hole 97 that penetrate in the up-down direction 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.

[0070] The seventh edge member 95 can be set to have a narrow width 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 set to have a wide width by inserting the pin member 99 from the second insertion hole 97 into the through hole 92.

[0071] 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.

[0072] 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 one side surface portion 32 of the first edge member 30 becomes the other side surface portion, and the other side surface portion 34 becomes the one side surface portion.

[0073] In the above-described embodiment, the shallow bottom portion 38a and the deep bottom portion 38b are 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.

[0074] In the above-described embodiment, the second edge member 50 is attached to a plurality of 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.

[0075] 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 in the above-described embodiments. [Explanation of symbols]

[0076] 10: Bed 12: Frame 12a: Head frame 12b: Foot side frame 14: Legs 20: Bottom 20a: Back bottom 20b: Waist bottoms 20c: Knee bottom 20d: Foot bottom 22: Cylindrical part 24:Top part 24a: End 24b:Top surface 26: Recess 26a: Side 28: Side part 29: Extension part 29a: Back side 30: First edge member 32:One side part 32a: Back side 34: Other side part 34a: Back 34b: Surface 35: Curved side 36: Opening 38: Bottom 38a: Shallow bottom 38b: Deep bottom 40: Rib 45: Engagement part 45a: Tip 50: Second edge member 51:Top part 51a: Mattress stopper attachment part 52: Bottom part 53: Curved surface part 54: Bottom 55: Opening 56: First through hole 57: Second through hole 58: Engagement part 60: Mattress stopper 62: Horizontal plate part 64: First protrusion 66: Second protrusion 68: Regulation Department 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 part 85: Bottom 86: 6th edge member 90: Bottom 90a: Back bottom 90b: Leg bottom 91a: Pipe 91b: Pipe 92:Through hole 95: 7th 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 material

Claims

1. 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:

2. 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.

3. 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.

4. 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.

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