JP7621886B2 - bed - Google Patents

Description

An embodiment of the present invention relates to a bed and a method for assembling the bed.

Conventionally, beds have been known that include a bed frame and a board that can be attached to the bed frame.

Japanese Patent Application Publication No. 7-327778

The object of the present invention is to provide a bed that is easy to assemble and a method for assembling the bed.

The bed according to the embodiment includes a bed frame having a board support, a board body, and a board having a supported member that is attached to the board body and can be supported by the board support. With the supported member supported by the board support, the bed frame and the board can be fastened together.

The method of assembling a bed according to the embodiment includes a step of temporarily fixing the board to the bed frame by supporting the supported member of the board on the board support of the bed frame, and a step of permanently fixing the board to the bed frame by fastening the board to the bed frame with bolts while the board is temporarily fixed to the bed frame.

According to an embodiment of the present invention, it is possible to provide a bed that is easy to assemble and a method for assembling the bed.

FIG. 1 is a perspective view showing a bed according to an embodiment. FIG. 2 is a side view showing the state in which the bed frame of the bed according to the embodiment is horizontal and placed at the lowest position. FIG. 2 is a side view showing a state in which the bed frame of the bed according to the embodiment is tilted. FIG. 2 is a top view showing a bed according to an embodiment, illustrating a state in which attachment portions for accessories such as side rails, an IV pole, a grip, or a handrail are exposed from the bottom of the bed. FIG. 5 is a top view showing the bed frame, the headboard, and the footboard in the state shown in FIG. 4. FIG. 1 is a top view showing a bed according to an embodiment, illustrating a state in which the accessory attachment portion is located inside the outer end of the bottom in the short direction of the bed frame. FIG. 7 is a top view showing the bed frame, the headboard, and the footboard in the state shown in FIG. 6 . FIG. 8(a) is a perspective view showing a board support on the head side of the bed according to the embodiment, and FIG. 8(b) is a perspective view showing a board support on the foot side of the bed according to the embodiment. FIG. 9(a) is a perspective view showing a fixing member of the bed according to the embodiment, and FIG. 9(b) is a plan view showing the fixing member of the bed according to the embodiment. FIG. 10(a) is a perspective view showing a headboard of the bed according to the embodiment, and FIG. 10(b) is a perspective view showing a footboard of the bed according to the embodiment. This is a cross-sectional view taken along line A-A' in Figure 5. 12(a) is a cross-sectional view showing the fastening position between the bed frame and the headboard in the state of FIG. 4, and FIG. 12(b) is a cross-sectional view showing the fastening position between the bed frame and the headboard in the state of FIG. This is a cross-sectional view taken along line B-B' in Figure 5. 14(a) and 14(b) are perspective views showing a step of temporarily fixing the headboard to the bed frame in the method of assembling the bed according to the embodiment. FIG. 15(a) is a perspective view showing the step of permanently fixing the headboard to the bed frame in the method of assembling the bed according to the embodiment, and FIG. 15(b) is a cross-sectional view showing the permanently fixing step. FIG. 13 is a perspective view showing a first modified example of the board receiver and the supported member. FIG. 17(a) is a cross-sectional view showing a second modified example of the board receiver and the supported member, and FIG. 17(b) is a top view showing the second modified example of the board receiver and the supported member.

Hereinafter, embodiments and modifications of the present invention will be described with reference to the drawings.
The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the size ratio between parts, etc. are not necessarily the same as those in reality. Even when the same part is shown, the dimensions and ratios of each part may be different depending on the drawing.
In this specification and each drawing, elements similar to those already explained are given the same reference numerals and detailed explanations are omitted as appropriate.

FIG. 1 is a perspective view showing a bed according to the present embodiment.
FIG. 2 is a side view showing a state in which the bed frame of the bed according to this embodiment is horizontal and placed at the lowest position.
FIG. 3 is a side view showing a state in which the bed frame of the bed according to this embodiment is tilted.
The bed 100 according to this embodiment is a knockdown type electric bed. The bed 100 is used, for example, by elderly people at home. However, the uses of the bed 100 are not limited to the above.

The bed 100 includes a base 110 placed on the floor or the like, a bed frame 120 provided on the base 110, a plurality of bottoms 130 provided on the bed frame 120, a headboard 140 that can be attached to the head end of the bed frame 120, a footboard 150 that can be attached to the foot end of the bed frame 120, two frame covers 160, a drive unit 170, and a controller 180. The operator drives the drive unit 170 by operating the controller 180. This allows the user to change the height and angle of the bed frame 120 from the floor surface 910 and the angle of each bottom 130, as shown in Figures 2 and 3. However, the height of the bed frame does not have to be changed by the drive unit. For example, the base may include an adjustment mechanism that can adjust the height of the bed frame in stages. The adjustment mechanism may, for example, include a stepwise extendable support pillar that supports the bed frame, and the height of the bed frame may be changed stepwise by changing the length of the support pillar stepwise.

In the following, to make the explanation easier to understand, an XYZ Cartesian coordinate system is used. The height direction of the bed 100 is referred to as the "height direction Z." The direction perpendicular to the height direction Z, from the head side to the foot side of the bed 100, or the opposite direction, is referred to as the "longitudinal direction X." The width direction of the bed, perpendicular to the height direction Z and the longitudinal direction X, is referred to as the "short direction Y."

FIG. 4 is a top view showing the bed according to this embodiment, illustrating the state in which the mounting portions for accessories such as side rails, an IV pole, grips, or handrails are exposed from the bottom of the bed.
FIG. 5 is a top view showing the bed frame, the headboard, and the footboard in the state shown in FIG.
FIG. 6 is a top view showing a bed according to this embodiment, illustrating a state in which the accessory attachment portion of the bed is located inside the outer end of the bottom in the short direction of the bed frame.
FIG. 7 is a top view showing the bed frame, the headboard, and the footboard in the state shown in FIG.

As shown in FIG. 5, the bed frame 120 is generally formed in a frame shape. In this embodiment, the bed frame 120 includes a plurality of frame members 121a-121h, a plurality of board supports 122a, 122b, and a plurality of fixing members 123.

Each frame member 121a to 121h can be made of, for example, a hollow pipe or a solid rod.

Of the multiple frame members 121a to 121h, two frame members 121a, 121b are spaced apart from each other in the short direction Y. Each frame member 121a, 121b extends in the longitudinal direction X. Hereinafter, the two frame members 121a, 121b will be referred to as the "outer vertical frame members 121a, 121b," respectively.

Each of the outer vertical frame members 121a, 121b is provided with a number of mounting sections 124 to which accessories such as side rails, IV poles, grips, or handrails can be attached. In this embodiment, each mounting section 124 is disposed within the corresponding outer vertical frame member 121a, 121b, and is a bottomed tubular member extending in the height direction Z. For example, the accessory may be provided with a support pole, and the accessory can be attached to each of the outer vertical frame members 121a, 121b by disposing the accessory support pole in the internal space of the mounting section 124. However, the structure of the mounting sections and the accessory is not limited to the above structure, so long as the accessory can be attached to the mounting section.

Two position adjustment members 125 are connected to each of the outer vertical frame members 121a, 121b by welding or the like. The two position adjustment members 125 are aligned in the longitudinal direction X. Each position adjustment member 125 is disposed inside the corresponding outer vertical frame member 121a, 121b in the short direction Y, and extends in the short direction Y. Each position adjustment member 125 has two through holes 125a aligned in the short direction Y.

Furthermore, fixing members 123 are connected to both ends of each of the outer vertical frame members 121a, 121b by welding or the like. The structure of the fixing members 123 will be described later.

Of the multiple frame members 121a to 121h, the other two frame members 121c, 121d are located between the two outer vertical frame members 121a, 121b. The two frame members 121c, 121d are lined up in the longitudinal direction X. Each frame member 121c, 121d extends in the lateral direction Y. Hereinafter, the two frame members 121c, 121d will be referred to as "horizontal frame members 121c, 121d", respectively.

Both ends of the horizontal frame member 121c arranged on the head side are each connected to the head side position adjustment member 125 by a bolt 125b. Similarly, both ends of the horizontal frame member 121d on the leg side are each connected to the leg side position adjustment member 125 by a bolt 125b.

When the bolt 125b is inserted through the inner through hole 125a in the short direction Y as shown in FIG. 5, the mounting portion 124 is located outside the bottom 130 in the short direction Y as seen from above as shown in FIG. 4. On the other hand, when the bolt 125b is inserted through the outer through hole 125a in the short direction Y as shown in FIG. 7, the mounting portion 124 is located inside the outer end of the bottom 130 in the short direction Y as shown in FIG. 6. In the following, the position of each of the outer vertical frame members 121a, 121b in the short direction Y shown in FIGS. 4 and 5 is referred to as the "first position P1", and the position of each of the outer vertical frame members 121a, 121b in the short direction Y shown in FIGS. 6 and 7 is referred to as the "second position P2".

For example, when the user is active, each vertical frame member 121a, 121b is placed in the second position P2. This allows each vertical frame member 121a, 121b to be recessed inward from the outer end of the bottom 130 in the short direction Y, making it easy for the user to get on and off the bed 100. On the other hand, when the user becomes less active due to aging or other reasons or requires care, each vertical frame member 121a, 121b is placed in the first position P1. This exposes the mounting portion 124 from the bottom 130, allowing accessories such as side rails, IV poles, grips, or handrails to be attached to the mounting portion 124.

Of the multiple frame members 121a to 121h, the other two frame members 121e and 121f are located between the two outer vertical frame members 121a and 121b, on the horizontal frame member 121c on the head side. The two frame members 121e and 121f are lined up in the short direction Y. Each frame member 121e and 121f extends in the long direction X.

Of the multiple frame members 121a to 121h, the other two frame members 121g, 121h are located between the pair of outer vertical frame members 121a, 121b, on the horizontal frame member 121d on the leg side. The two frame members 121g, 121h are lined up in the short direction Y. Each frame member 121g, 121h extends in the long direction X.

Hereinafter, frame members 121e to 121h are also referred to as "inner vertical frame members 121g to 121h," respectively. Each of the inner vertical frame members 121e and 121f located on the head side is connected to each of the inner vertical frame members 121g and 121h located on the leg side.

Board receiver 122a is connected to the head-side end of each of the inner vertical frame members 121e, 121f arranged on the head side. Board receiver 122b is connected to the leg-side end of each of the inner vertical frame members 121e, 121f arranged on the leg side.

FIG. 8(a) is a perspective view showing a board support on the head side of the bed according to this embodiment, and FIG. 8(b) is a perspective view showing a board support on the foot side of the bed according to this embodiment.
As shown in FIG. 8( a ), each head-side board receiver 122 a has an extension portion 126 extending in the longitudinal direction X, and a support portion 127 connected to the head-side end of the extension portion 126 and capable of supporting the headboard 140 .

The extension portion 126 has a side plate portion 126s1 that faces the outer side surface in the short direction Y of the corresponding inner vertical frame member 121e, 121f, and an upper plate portion 126s2 that is connected to the upper end of the side plate portion 126s1 and faces the upper surface of the inner vertical frame member 121e, 121f. The side plate portion 126s1 has a through hole 126h that passes through the side plate portion 126s1 in the short direction Y. The board receiver 122a can be fixed to the inner vertical frame members 121e, 121f by a bolt 126i that passes through the through hole 126h of the board receiver 122a and the through hole of the inner vertical frame member 121e, 121f.

In addition, in the bed 100 according to this embodiment, the outer vertical frame members 121a, 121b are available in a variety of sizes in the longitudinal direction X, allowing the user to select the outer vertical frame members 121a, 121b of the desired length. In this embodiment, the through holes 126h of each board receiver 122a extend in the longitudinal direction X. Therefore, by adjusting the fastening positions of the board receiver 122a and the inner vertical frame members 121e, 121f according to the longitudinal direction X dimensions of the selected outer vertical frame members 121a, 121b, the total dimensions of the board receiver 122a and the inner vertical frame members 121e, 121f in the longitudinal direction X can be adjusted. As a result, regardless of the dimensions of the outer vertical frame members 121a, 121b selected, the inner vertical frame members 121e, 121f and the board receiver 122a can be used in common.

The support portion 127 has a first side plate portion 127s1, a second side plate portion 127s2, a third side plate portion 127s3, and a bottom plate portion 127s4. The first side plate portion 127s1 is connected to the extension portion 126 and is generally parallel to the Y-Z plane. The second side plate portion 127s2 is disposed outward in the longitudinal direction X from the first side plate portion 127s1 and is generally parallel to the Y-Z plane. The third side plate portion 127s3 is disposed between the inner end of the first side plate portion 127s1 in the short direction Y and the inner end of the second side plate portion 127s2 in the short direction Y, and is generally parallel to the X-Z plane. The bottom plate portion 127s4 is disposed between the lower end of the first side plate portion 127s1 and the lower end of the second side plate portion 127s2, and is generally parallel to the X-Y plane. In this way, the support portion 127 opens upward and outward in the short direction Y, and a space 127a is provided between the first side plate portion 127s1, the second side plate portion 127s2, the third side plate portion 127s3, and the bottom plate portion 127s4 in which a supported member 142 (described later) of the headboard 140 can be placed.

As shown in FIG. 5, the shape of the head side board receiver 122a connected to the inner vertical frame member 121e is roughly symmetrical to the shape of the head side board receiver 122a connected to the inner vertical frame member 121f, with respect to the X-Z plane.

As shown in FIG. 8(b), the foot-side board receiver 122b has an extension portion 128 extending in the longitudinal direction X and a support portion 129 connected to the foot-side end of the extension portion 128 and capable of supporting the footboard 150.

The extension portion 128 has a side plate portion 128s1 that faces the outer side surface in the short direction Y of the corresponding inner vertical frame member 121g, 121h, an upper plate portion 128s2 that is connected to the upper end of the side plate portion 128s1 and faces the upper surface of the inner vertical frame member 121g, 121h, and a lower plate portion 128s3 that is connected to the lower end of the side plate portion 128s1 and faces the inner vertical frame member 121g, 121h. The side plate portion 128s1 has a through hole 128h that penetrates the side plate portion 128s1 in the short direction Y. The board receiver 122b can be fixed to the inner vertical frame member 121g, 121h by a bolt 128i that passes through the through hole 128h of the board receiver 122b and the through hole of the inner vertical frame member 121g, 121h.

The shape of the support part 129 is generally symmetrical to the shape of the support part 127 of the head side board receiver 122a with respect to the Y-Z plane. Also, as shown in FIG. 5, the shape of the leg side board receiver 122b connected to the inner vertical frame member 121g is generally symmetrical to the shape of the leg side board receiver 122b connected to the inner vertical frame member 121h with respect to the X-Z plane.

However, the structure of the board receiver is not limited to the above. For example, the board receiver may be connected to another frame member, such as an outer vertical frame member, instead of the inner vertical frame member. Also, the board receiver may be joined to the frame member by welding or the like, instead of being connected to the frame member by bolts.

FIG. 9(a) is a perspective view showing a fixing member of the bed according to this embodiment, and FIG. 9(b) is a plan view showing the fixing member of the bed according to this embodiment.
Each fixing member 123 is connected to the corresponding outer vertical frame member 121a, 121b by welding or the like, and extends inward in the short direction Y from the outer vertical frame member 121a, 121b.

Each fixing member 123 has an upper plate portion 123s1 that is generally parallel to the XY plane, a lower plate portion 123s2 that is located below the upper plate portion 123s1 and is generally parallel to the XY plane, and a side plate portion 123s3 that is connected to the outer ends of the upper plate portion 123s1 and the lower plate portion 123s2 in the longitudinal direction X and faces the headboard 140 or the footboard 150. As shown in FIG. 9(b), the side plate portion 123s3 has a pair of through holes 123h1 aligned in the height direction Z, and another pair of through holes 123h2 that are aligned in the height direction Z and positioned outside the pair of through holes 123h1 in the lateral direction Y.

Each through hole 123h1, 123h2 is an oval or elliptical shape with its major axis extending in the height direction Z. Therefore, the dimension L1 of each through hole 123h1, 123h2 in the height direction Z is greater than the dimension L2 of each through hole 123h1, 123h2 in the short direction Y. However, the shape of the through holes 123h1, 123h2 and the relationship between the dimensions L1 and L2 are not limited to the above.

As shown in FIG. 5, the shape of the fixing member 123 connected to the outer vertical frame member 121a is roughly symmetrical to the shape of the fixing member 123 connected to the outer vertical frame member 121b with respect to the X-Z plane. Also, the shape of the fixing member 123 connected to the head side ends of the outer vertical frame members 121a, 121b is roughly symmetrical to the shape of the fixing member 123 connected to the leg side ends with respect to the Y-Z plane.

However, the fixing member may be connected to another frame member, such as the inner vertical frame member, instead of the outer vertical frame member. Also, the fixing member may be connected to the frame member by bolts or the like, rather than being joined by welding or the like.

The frame members 121a to 121h, the board supports 122a and 122b, the fixing member 123, and the position adjustment member 125 are made of, but are not limited to, a metal material, for example.

The structure of the bed frame 120 has been described above, but the structure of the bed frame is not limited to the above structure. For example, the number and arrangement of the frame members that make up the bed frame are not particularly limited to the number and arrangement described above.

FIG. 10(a) is a perspective view showing a headboard of the bed according to this embodiment, and FIG. 10(b) is a perspective view showing a footboard of the bed according to this embodiment.
FIG. 11 is a cross-sectional view taken along line AA' in FIG.
12(a) is a cross-sectional view showing the fastening position between the bed frame and the headboard in the state of FIG. 4, and FIG. 12(b) is a cross-sectional view showing the fastening position between the bed frame and the headboard in the state of FIG.
FIG. 13 is a cross-sectional view taken along line BB' in FIG.

As shown in FIG. 10(a), the headboard 140 has a plate-shaped board body 141 and two supported members 142 that are attached to the board body 141 and can be supported by two board supports 122a.

A pair of screw holes 141a and another pair of screw holes 141b are provided in the lower part of the board body 141. The pair of screw holes 141a are aligned in the height direction Z. The other pair of screw holes 141b are also aligned in the height direction Z. The pair of screw holes 141a are arranged on one side of the center of the board body 141 in the short direction Y. The other pair of screw holes 141b are arranged on the other side of the center of the board body 141 in the short direction Y. As shown in FIG. 11, each screw hole 141a, 141b extends from the inner surface 141s1 of the board body 141 facing the bed frame 120 to the outside in the longitudinal direction X. Each screw hole 141a, 141b does not reach the outer surface 141s2 located on the opposite side of the inner surface 141s1 of the board body 141. However, each screw hole may penetrate the board body.

As shown in FIG. 12(a), when the outer vertical frame members 121a, 121b are positioned at the first position P1, the screw holes 141a, 141b of the board body 141 and the through holes 123h1 located on the inside of the short direction Y in the fixing member 123 overlap when viewed from the longitudinal direction X. Then, the headboard 140 is fastened to the bed frame 120 by inserting bolts 190 into each through hole 123h1 located on the inside of the short direction Y in the fixing member 123 and screwing each bolt 190 into each screw hole 141a, 141b of the board body 141. In other words, the headboard 140 is fastened to the bed frame 120 from the inside.

On the other hand, as shown in FIG. 12(b), when the outer vertical frame members 121a, 121b are positioned at the second position P2, the screw holes 141a, 141b of the board body 141 overlap with the through holes 123h2 located on the outside of the short side direction Y in the fixing member 123 when viewed from the longitudinal direction X. Then, the headboard 140 is fastened to the bed frame 120 by inserting each bolt 190 into each through hole 123h2 located on the outside of the short side direction Y in the fixing member 123 and screwing each bolt 190 into each screw hole 141a, 141b of the board body 141.

In this embodiment, the fixing member 123 is provided with one through hole 123h1 and another through hole 123h2. However, instead of the one through hole and the other through hole, the fixing member may be provided with a single through hole extending in the short direction Y. In this case, the position where the bolt passes through this through hole can be adjusted according to the position of the outer vertical frame member in the short direction Y (first position or second position). In addition, the short direction position of the outer vertical frame member does not need to be changeable. In this case, the fixing member does not need to be provided with another pair of through holes.

As shown in FIG. 2, when the headboard 140 is fastened to the bed frame 120 and is positioned at the lowest position, the bottom end of the board body 141 is located above the bottom end of the base 110. In other words, the headboard 140 is separated from the floor surface 910.

Examples of the material for the board body 141 include wood or resin. However, the material for the board body 141 is not limited to the above materials as long as it satisfies the required function.

As shown in FIG. 10, the two supported members 142 are located between a pair of screw holes 141a and another pair of screw holes 141b in the longitudinal direction X, and are lined up in the lateral direction Y. One of the two supported members 142 is located on one side of the center of the board body 141 in the lateral direction Y, and the other is located on the other side of the center of the board body 141 in the lateral direction Y.

The shapes of the two supported members 142 are generally symmetrical with respect to the X-Z plane. Each supported member 142 has a first portion 142a, a second portion 142b, and a third portion 142c. The first portion 142a abuts the board body 141. The first portion 142a includes a first extension portion extending in the height direction Z and a second extension portion connected to the upper end of the first extension portion and extending inward in the short direction Y. The second portion 142b is located inward in the short direction Y from the first extension portion of the first portion 142a and is located lower than the second extension portion of the first portion 142a. The second portion 142b is separated from the board body 141 in the longitudinal direction X. The third portion 142c is located between the first portion 142a and the second portion 142b and is connected to the first portion 142a and the second portion 142b. In this way, the supported member 142 opens downward and toward the inside in the short direction Y.

As shown in FIG. 13, the second portion 142b of the supported member 142 is disposed within the space 127a of the board receiver 122a. In this state, the supported member 142 abuts against at least one of the upper end of the second side plate portion 127s2 or the bottom plate portion 127s4 of the board receiver 122a. The distance between the inner end of the lower end of the second portion 142b in the short direction Y and the board body 141 is longer than the distance between the upper end of the second portion 142b and the board body 141.

Similarly, as shown in FIG. 10(b), the footboard 150 has a plate-shaped board body 151 and two supported members 152 that are attached to the board body 151 and can be supported by two board receivers 122b.

The board body 151 has a pair of screw holes 151a and a pair of screw holes 151b, similar to the screw holes 141a and 141b of the board body 141 of the headboard 140. The footboard 150 is fastened to the bed frame 120 by inserting a bolt 190 into each through hole 123h1 or each through hole 123h2 of the fixing member 123 and screwing each bolt 190 into each screw hole 151a and 151b of the board body 151.

However, in this embodiment, each board 140, 150 is fastened to the bed frame 120 at four points by bolts 190. However, the number of fastening points between each board and the bed frame is not limited to four. Also, the number of fixing members, the number of through holes in one fixing member, and the number of screw holes in each board body can be adjusted appropriately depending on the number of fastening points between each board and the bed frame. Also, each board may be fastened to the bed frame from the outside rather than the inside.

As shown in FIG. 3, when the footboard 150 is fastened to the bed frame 120 and is positioned at the lowest position, the lower end of the board body 151 is positioned above the lower end of the base 110. In other words, the footboard 150 is separated from the floor surface 910.

The board body 151 may be made of the same material as the board body 141 of the headboard 140.

Also, as shown in FIG. 5, the shape of the two supported members 152 is roughly symmetrical to the shape of the two supported members 142 of the headboard 140 with respect to the Y-Z plane.

The supported members 142, 152 are made of, for example, a metal material.
However, the configuration of the supported members is not limited to the above. For example, the supported members may be disposed outside the screw holes provided in each board in the short-side direction Y. Furthermore, the shapes of the board receiver and the supported members are not limited to the above shapes, as long as the board receiver can support the supported members. Furthermore, the number of supported members on each board and the number of corresponding board receivers are not particularly limited, as long as each is one or more.

As shown in FIG. 4, the two frame covers 160 are attached to the outer vertical frame members 121a, 121b, respectively. Each frame cover 160 covers the upper surface, lower surface, and outer side surface in the short direction Y of the corresponding outer vertical frame member 121a, 121b. The upper surface of the frame cover 160 is provided with a plurality of through holes that can expose the attachment parts 124 of accessories provided on the corresponding outer vertical frame member 121a, 121b. As shown in FIG. 2, the lower surface of each frame cover 160 is generally flush with the lower surfaces of the headboard 140 and footboard 150. However, the position of the frame cover 160 is not particularly limited to the above position. In addition, the bed does not need to be provided with a frame cover.

Next, a method for assembling the bed 100 according to this embodiment will be described.
14(a) and 14(b) are perspective views showing the step of temporarily fixing the headboard to the bed frame in the method of assembling the bed according to this embodiment.
Figure 15(a) is a perspective view showing the step of permanently fixing the headboard to the bed frame in the method of assembling the bed according to this embodiment, and Figure 15(b) is a cross-sectional view showing the permanently fixing step.
In addition, in order to make the explanation easier to understand, components other than the bed frame 120 and the headboard 140 are omitted in Figures 14(a) to 15(b).
First, the worker assembles the base 110, the bed frame 120, and the like.

Next, as shown in FIG. 14(a), the worker inserts the two supported members 142 of the headboard 140 from above into the space 127a of the two board receivers 122a of the bed frame 120, and supports them on the two board receivers 122a. As a result, as shown in FIG. 14(b), the two supported members 142 are supported on the two board receivers 122a. As a result, the headboard 140 is temporarily fixed to the bed frame 120. In this embodiment, the movement of the headboard 140 in the longitudinal direction X, the lateral direction Y, and the downward direction is restricted by the engagement of the two supported members 142 and the two board receivers 122a. Therefore, even if the worker releases his/her hands from the headboard 140, the headboard 140 can be prevented from falling from the bed frame 120. In this specification, "temporarily fixed" means that the board is supported by the bed frame so that it does not fall downward even if the worker does not hold the board. Therefore, it is sufficient that the movement of the headboard 140 in the longitudinal direction X, the lateral direction Y, and downward is restricted to a certain degree. Therefore, as shown in FIG. 13, a clearance may exist between the second portion 142b of the supported member 142 and the first side plate portion 127s1 of the board receiver 122a, and between the second portion 142b and the second side plate portion 127s2 of the board receiver 122a. Also, for example, the dimensions of the space 127a and the portions of the supported member 142 that open downward and inward in the lateral direction Y may be dimensioned to allow a certain degree of leeway.

Next, as shown in FIG. 15(a), with the two supported members 142 supported by the two board receivers 122a, the worker inserts the four bolts 190 into the through holes 123h1 or 123h2 of the fixing member 123 and screws them into the screw holes 141a, 141b of the headboard 140. As a result, as shown in FIG. 15(b), the headboard 140 and the bed frame 120 are fastened by the bolts 190. In other words, the headboard 140 is fully fixed to the bed frame 120. At this time, the second parts 142b of the supported members 142, 152 and the second side plate parts 127s2 of the board receivers 122a, 122b overlap when viewed from the longitudinal direction X. When viewed from the longitudinal direction X, the upper end 122t of the portion where the supported member 142 and the board receivers 122a, 122b overlap is located above the fastening position of the bed frame 120 and the headboard 140, i.e., the bolt 190.

The worker performs the temporary fixing process and the permanent fixing process for the footboard 150 in the same manner as for the headboard 140. Note that the order in which the headboard 140 and the footboard 150 are attached is not particularly limited.

Next, the worker places multiple bottoms 130 on the bed frame 120. The bottoms 130 may be placed on the bed frame 120 before the temporary fixing process. In this case, the bottoms 130 located at both ends in the longitudinal direction X may be kept away from the bed frame 120 so as not to interfere with the temporary fixing and permanent fixing operations.

Next, the effects of this embodiment will be described.
In the method of assembling the bed 100 according to this embodiment, the boards 140, 150 are temporarily fixed to the bed frame 120 by having the supported members 142, 152 of the boards 140, 150 supported by the board receivers 122a, 122b of the bed frame 120. Then, with the boards 140, 150 temporarily fixed to the bed frame 120, the boards 140, 150 are fastened to the bed frame 120 with bolts 190, and the boards 140, 150 are permanently fixed to the bed frame 120. Since the worker does not need to hold the board 140 when fastening the boards 140, 150 to the bed frame 120, assembling the bed 100 becomes easier.

In particular, when the position of the bed frame 120 can be changed in the height direction Z, or when the angle of the bed frame 120 can be changed, it is preferable that the boards 140, 150 are located above the floor surface 910 at their lowest positions, as shown in Figs. 2 and 3, in order to avoid interference between the boards 140, 150 and the floor surface 910. In such a case, the worker needs to fasten the boards 140, 150 to the bed frame 120 while raising them above the floor surface. In the method of assembling the bed 100 according to this embodiment, the boards 140, 150 can be kept separated from the floor surface 910 by the board receivers 122a, 122b and the supported members 142, 152 without the worker having to hold them. Therefore, such a bed 100 can be easily assembled, for example, by one person.

In addition, when the bed 100 is assembled, the boards 140 and 150 are fastened to the bed frame 120 by bolts 190, which prevents the board 140 from wobbling relative to the bed frame 120.

In addition, when the bed 100 is assembled, the boards 140, 150 are not only fastened to the bed frame 120 by the bolts 190, but are also supported by the board receivers 122a, 122b. Therefore, when a moment around a rotation axis extending in the short direction Y acts on the upper ends of the board bodies 141, 151, the moment can be withstood at both the fastening parts between the bed frame 120 and the boards 140, 150 by the bolts 190 and the contact parts between the board receivers 122a, 122b and the supported members 142, 152. This improves the durability of the bed 100.

When the boards 140, 150 are permanently fixed to the bed frame 120, the bolts 190 are inserted through the through holes 123h1, 123h2 of the bed frame 120 and screwed into the screw holes 141a, 141b, 151a, 151b extending from the inner surface 141s1 of the boards 140, 150 toward the outside in the longitudinal direction X. In this way, the bolts 190 are attached from the inside of the boards 140, 150. And the screw holes 141a, 141b, 151a, 151b do not reach the outer surface 141s2 of the boards 140, 150. This improves the design of the bed 100.

In addition, the dimension L1 of each through hole 123h1, 123h2 in the height direction Z is greater than the dimension L2 of each through hole 123h1, 123h2 in the short direction Y. Therefore, even if the relative positions of the centers of the through holes 123h1, 123h2 of the fixing member 123 and the centers of the screw holes 141a, 141b, 151a, 151b of the board main body 141, 151 are misaligned due to the manufacturing precision or assembly precision of the parts that make up the bed 100, the boards 140, 150 can be easily fastened to the bed frame 120.

In addition, the fixing member 123 has a through hole 123h1 located at a position corresponding to the screw holes 141a, 141b, 151a, and 151b when the outer vertical frame members 121a and 121b are located at the first position P1, and a through hole 123h2 located at a position corresponding to the screw holes 141a, 141b, 151a, and 151b when the outer vertical frame members 121a and 121b are located at the second position P2. Therefore, the boards 140 and 150 can be fastened to the common fixing member 123 regardless of whether the outer vertical frame members 121a and 121b are located at the first position P1 or the second position P2.

In addition, when viewed from above, the board receivers 122a, 122b and the supported members 142, 152 are located in the short direction Y, that is, inside the fastening position of the bed frame 120 and the boards 140, 150, i.e., the bolts 190. Therefore, the board receivers 122a, 122b and the supported members 142, 152 are unlikely to interfere with the work of fastening the bed frame 120 and the boards 140, 150.

In addition, when the supported members 142, 152 are supported by the board receivers 122a, 122b, the supported members 142, 152 and the board receivers 122a, 122b overlap when viewed from the longitudinal direction X. The upper end 122t of the portion where the supported member 142 and the board receiver 122a overlap when viewed from the longitudinal direction X is located above the fastening position of the bed frame 120 and the boards 140, 150. Therefore, when a moment around a rotation axis extending in the short direction Y acts on the upper end of the board main body 141, 151, the supported members 142, 152 abut against the board receivers 122a, 122b at a position above the fastening position of the bed frame 120 and the boards 140, 150. This makes it possible to suppress the force acting on the fastening position of the bed frame 120 and the boards 140, 150.

<Modification>
Next, modified examples of the board receiver and the supported member will be described.
FIG. 16 is a diagram showing a first modified example of the board receiver and the supported member.
FIG. 17(a) is a cross-sectional view showing a second modified example of the board receiver and the supported member, and FIG. 17(b) is a top view showing the second modified example of the board receiver and the supported member.
The shapes of the board receiver and the supported member are not limited to those of the above embodiment, so long as the board receiver can support the board so as to prevent it from falling even if the worker does not hold the board.

For example, as shown in FIG. 16, the board support 222 may include a cylindrical member with a bottom. The supported member 242 may include a support attached to the board body 141, 151. Here, "with a bottom" refers not only to a case in which the bottom of the cylindrical member is completely closed, but also to a case in which the bottom of the cylindrical member is partially closed. In this case, the supported member 242 is placed in the internal space of the board support 222, and the boards 140, 150 are temporarily fixed to the bed frame 120.

For example, as shown in FIG. 17(a), the board receiver 322 may include two bosses 322a and 322b arranged in the height direction Z. As shown in FIG. 17(b), each boss 322a and 322b extends in the short direction Y. As shown in FIG. 17(a), the supported member 342 may have a first portion 342a, a second portion 342b, and a third portion 342c. The first portion 342a extends in the height direction Z. The second portion 342b includes a first extension portion connected to the first portion 342a and extending inward in the longitudinal direction X, and a second extension portion connected to the inner end of the first extension portion in the longitudinal direction X and extending downward. Therefore, a recess 343a is formed between the first portion 342a and the second portion 342b. The third portion 342c is connected to the first portion 342a above the second portion 342b, and includes a first extension portion extending inward in the longitudinal direction X, and a second extension portion connected to the inner end of the first extension portion in the longitudinal direction X and extending downward. Therefore, a recess 343b is formed between the first portion 342a and the third portion 342c. Each recess 343a, 343b is recessed upward. The corresponding boss 322a, 322b is placed in each recess 343a, 343b, and the boards 140, 150 are temporarily fixed to the bed frame 120.

In the above embodiment, the bolt fastens the board body of the board to the fixing member of the bed frame, but the bolt may fasten the board support to the supported member. Also, when the board body of the board and the fixing member of the bed frame are fastened, the board support and the supported member may be further fastened.

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

100: Bed 110: Base 120: Bed frame 121a to 121h: Frame material 122a, 122b, 222, 322: Board support 122t: Upper end 123: Fixing member 123h1, 123h2: Through hole 123s1: Upper plate portion 123s2: Lower plate portion 123s3: Side plate portion 124: Mounting portion 125: Position adjustment member 125a: Through hole 125b: Bolt 126: Extension portion 126h: Through hole 126i: Bolt 126s1: Side plate portion 126s2: Upper plate portion 127: Support portion 127a: Space 127s1: First side plate portion 127s2: Second side plate portion 127s3: Third side plate portion 127s4 : Bottom plate portion 128 : Extension portion 128h : Through hole 128i : Bolt 128s1 : Side plate portion 128s2 : Upper plate portion 128s3 : Lower plate portion 129 : Support portion 130 : Bottom 140 : Headboard 141 : Board body 141a, 141b : Screw hole 141s1 : Inner surface 141s2 : Outer surface 142, 242, 342 : Supported member 142a : First portion 142b : Second portion 142c : Third portion 150 : Footboard 151 : Board body 151a, 151b : Screw hole 152 : Supported member 160 : Frame cover 170 : Drive portion 180 : Controller 190 : Bolts 322a, 322b : Boss 342a : First portion 342b : Second portion 342c : Third portion 343a, 343b : Recess 910 : Floor surface L1, L2 : Dimension P1 : First position P2 : Second position X : Longitudinal direction Y : Shortitudinal direction Z : Height direction

Claims (6)

A bed frame having a board support;
a board having a board body and a supported member provided on the board body and capable of being supported by the board receiver;
The bed frame and the board can be fastened together while the supported member is supported by the board support ,
The bed frame and the board are further provided with a bolt capable of fastening the board,
The bed frame further includes a fixing member facing the board body in the longitudinal direction of the bed frame,
The fixing member has a through hole,
The board body is provided with a screw hole,
The bolt can be screwed into the screw hole while being inserted through the through hole,
The bed further includes a bottom provided on the bed frame,
The bed frame further includes a frame member extending in the longitudinal direction and provided with an attachment portion to which an accessory can be attached,
The position of the frame material can be changed to a first position where the mounting portion is located outside the bottom in the short side direction of the bed frame, and a second position where the mounting portion is located inside the end of the bottom on the outside in the short side direction,
The fixing member is connected to an end portion of the frame material in the longitudinal direction,
the through hole is disposed at a position corresponding to the screw hole when the frame member is located at the first position,
A bed, wherein the fixing member is further provided with another through hole, through which the bolt can be inserted, at a position corresponding to the screw hole when the frame material is in the second position. The bed of claim 1, wherein the screw hole is provided on a first surface of the board body that faces the fixing member, and does not reach a second surface of the board body that is located opposite the first surface. The bed according to claim 1 or 2 , wherein a dimension of the through hole in a height direction of the bed frame is greater than a dimension of the through hole in a short direction of the bed frame. A bed according to any one of claims 1 to 3, wherein when the bed frame and the board are fastened together, the board support and the supported member are positioned inward in the short direction of the bed frame relative to the fastening position of the bed frame and the board . In a state where the supported member is supported by the board receiver,
The supported member and the board support overlap when viewed from the longitudinal direction of the bed frame,
The bed according to any one of claims 1 to 4 , wherein an upper end of a portion where the supported member and the board support overlap when viewed from the longitudinal direction is located above a fastening position between the bed frame and the board. The bed frame further includes a base capable of supporting the bed frame.
The height of the bed frame is adjustable;
The bed according to any one of claims 1 to 5 , wherein when the board body is placed at the lowest position, the lower end of the board body is positioned higher than the lower end of the base.

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