bed

Abstract

To provide a bed in which a side frame can be easily attached / detached.SOLUTION: A bed includes: main frames extending in a back and forth direction; and side frames attachable to / removable from the main frames. The side frame has: a frame part extending in the back and forth direction; and arm parts extending from the frame part to the main frame. The arm part has: an extension part extending from the frame part; and a hook part which is provided for the extension part and is hooked on the main frame when assembled with the main frame.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] BACKGROUND ART Beds equipped with side frames for mounting options such as fences are known (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-58254 Summary of the Invention [Problem to be solved by the invention]

[0004] Such side frames may be attached and detached in the room the bed is installed in. Because the side frames extend in the longitudinal direction of the bed, it may be time-consuming for a worker to attach and detach them by himself, for example.

[0005] An object of an embodiment of the present invention is to provide a bed in which the side frames can be easily attached and detached. [Means for solving the problem]

[0006] The bed according to the embodiment comprises a main frame extending in the front-to-rear direction and a side frame that can be attached to and detached from the main frame, and the side frame has a frame portion that extends in the front-to-rear direction and an arm portion that extends from the frame portion toward the main frame, and the arm portion has an extension portion that extends from the frame portion and a hook portion that is provided on the extension portion and hooks onto the main frame when assembled to the main frame. [Effects of the Invention]

[0007] According to an embodiment of the present invention, a bed can be provided in which the side frames can be easily attached and detached. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a plan view showing a bed according to an embodiment of the present invention. [Figure 2] FIG. 2 is a side view of the bed in FIG. 1 with a fence attached thereto. [Figure 3] FIG. 10 is a plan view showing a state in which the bottom member is removed. [Figure 4] 4 is an enlarged plan view showing a mounting portion between the main frame and the side frame located on the right front side in FIG. 3. FIG. [Figure 5] 5 is a cross-sectional view of the main frame and the side frame in FIG. 4, as viewed from the direction of arrow AA. [Figure 6] FIG. 2 is an enlarged perspective view showing a mounting portion between the main frame and the side frame. [Figure 7] FIG. 7 is an exploded perspective view showing a state in which the side frame in FIG. 6 is removed from the main frame. [Figure 8] FIG. 2 is a front view of the bed in FIG. 1 as seen from the front side. DETAILED DESCRIPTION OF THE INVENTION

[0009] A bed according to an embodiment of the present invention will be described with reference to FIGS.

[0010] FIG. 1 is a plan view showing a bed according to an embodiment of the present invention. FIG. 2 is a side view of the bed in FIG. 1 with a fence attached thereto. FIG. 3 is a plan view showing a state in which the bottom member is removed.

[0011] 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 can electrically adjust the height of the backrest, knee area, etc. The bed 10 has a back bottom 30, knee bottom 34, and leg bottom 36 that can be raised and lowered. In the bed 10 shown in FIG. 1, the left side of the bed 10 in FIG. 1 is the head side, and the right side of the bed 10 in FIG. 1 is the foot side. In this embodiment, the direction between the head side and the foot side is defined as the front-to-rear direction. The bed 10 has a base frame 12, a main frame 14, side frames 50, and a bottom frame 20.

[0012] The base frame 12 is placed on the floor and extends in the front-rear direction. A pair (two) of base frames 12 are provided spaced apart in the left-right direction (short side direction). The base frame 12 has legs 12a at its ends in the front-rear direction.

[0013] The main frame 14 is located above the base frame 12. A pair (two) of main frames 14 are provided spaced apart in the left-right direction of the bed 10 and extend in the front-rear direction. The main frame 14 has an upper surface portion 14a, an inner surface portion 14b and an outer surface portion 14c extending downward from the upper surface portion 14a, and a lower surface portion 14d connecting the lower end of the inner surface portion 14b to the lower end of the outer surface portion 14c. The main frame 14 is a rectangular tube formed by the upper surface portion 14a, the inner surface portion 14b, the outer surface portion 14c, and the lower surface portion 14d.

[0014] The main frame 14 is supported on the base frame 12 via, for example, an elevating mechanism 44. The main frame 14 is movable up and down relative to the base frame 12 by the elevating mechanism 44. A headboard mounting portion 15 to which a headboard (not shown) is attached is provided at the front end of the main frame 14.

[0015] Additionally, side frames 50, which will be described later, are detachably attached to the main frame 14. The main frame 14 has through holes 14e through which shafts 58a of fastening members 58 for attaching the side frames 50, which will be described later, pass. The through holes 14e pass through the inner side surface portion 14b and the outer side surface portion 14c in the left-right direction. In this example, the through holes 14e are provided at two locations in the front-rear direction (longitudinal direction) of the main frame 14.

[0016] The bottom frame 20 is located inside the main frame 14 in the left-right direction and extends in the front-rear direction. In other words, the bottom frame 20 is arranged in parallel with the main frame 14. Two bottom frames 20 are provided spaced apart in the left-right direction (short side direction) of the bed 10. The bottom frames 20 support a plurality of bottom members 26, which will be described later.

[0017] The bottom frame 20 has a back frame 21 that supports the back bottom 30, a waist frame 22 that supports the waist bottom 32, a knee frame 23 that supports the knee bottom 34, and a leg frame 24 that supports the leg bottom 36. The back frame 21, the waist frame 22, the knee frame 23, and the leg frame 24 are provided in pairs, spaced apart in the left-right direction (short direction) of the bed 10.

[0018] The back frame 21 is located at the front end of the bed 10 and extends in the front-to-rear direction. The back frame 21 supports the back bottom 30 from the rear side. The back frame 21 is able to rise and fall (bend) relative to the lumbar frame 22 by operation of the first drive device 40a. That is, by operation of the first drive device 40a, the front end of the back frame 21 moves up and down with the rear end side as a rotation fulcrum.

[0019] The lumbar frame 22 is located behind the back frame 21 and extends in the front-to-rear direction. The lumbar frame 22 supports the lumbar bottom 32 from the back side. The lumbar frame 22 is fixed to the main frame 14.

[0020] The knee frame 23 is located behind the waist frame 22 and extends in the front-to-rear direction. The knee frame 23 supports the back side of the knee bottom 34. The knee frame 23 is rotatably connected to the waist frame 22 and also to the leg frame 24.

[0021] The leg frame 24 is located behind the knee frame 23 and extends in the front-to-rear direction. The leg frame 24 supports the back side of the leg bottom 36. The leg frame 24 is bendable relative to the knee frame 23.

[0022] The bottom members 26 are fixed onto the bottom frame 20, and a plurality of them are provided lined up in the front-to-rear direction on the main frame 14 and the bottom frame 20. Each bottom member 26 extends in the left-to-right direction across the bottom frames 20 that are spaced apart in the left-to-right direction. As shown in FIG. 1, in this example, ten bottom members 26 are provided. The top surfaces of the bottom members 26 form a support surface for a mattress (not shown), and support the mattress and the human body on the mattress.

[0023] Each bottom member 26 constitutes a back bottom member 30, a waist bottom member 32, a knee bottom member 34, and a leg bottom member 36. The back bottom member 30 is made up of four bottom members 26 from the head side (front side). In other words, these four bottom members 26 are fixed to the back frame 21. The back bottom member 30 supports the head and back of a user lying on the bed 10.

[0024] The lumbar bottom 32 is located behind the back bottom 30 and is composed of one bottom member 26. In other words, this one bottom member 26 is fixed to the lumbar frame 22. The lumbar bottom 32 supports the lumbar and buttocks of a user lying on the bed 10.

[0025] The knee bottom 34 is located behind the waist bottom 32 and is composed of two bottom members 26. In other words, these two bottom members 26 are fixed to the knee frame 23. The knee bottom 34 supports the thighs of a user lying on the bed 10.

[0026] The leg bottom 36 is located behind the knee bottom 34 and is composed of three bottom members 26. In other words, these three bottom members 26 are fixed to the leg frame 24. The leg bottom 36 supports the lower legs of a user lying on the bed 10.

[0027] A backrest mechanism 40, a knee-raising mechanism 42, a lifting mechanism 44, and a control device 46 are provided below each bottom member 26. The backrest mechanism 40 is provided below the back bottom 30. The backrest mechanism 40 has a first drive device 40a, which is, for example, an electric cylinder. The backrest mechanism 40 raises and lowers the back frame 21 by operating the first drive device 40a.

[0028] The knee-raising mechanism 42 is provided behind the backrest mechanism 40. The knee-raising mechanism 42 has a second drive device 42a, which is, for example, an electric cylinder. The second drive device 42a moves the knee frame 23 and the leg frame 24 up and down. By operating the second drive device 42a, the knee-raising mechanism 42 bends the knee frame 23 and the leg frame 24 in a mountain fold shape.

[0029] The lifting mechanism 44 is provided behind the knee-raising mechanism 42. The lifting mechanism 44 has a third drive device 44a, which is, for example, an electric cylinder. The lifting mechanism 44 is provided between the base frame 12 and the main frame 14. The lifting mechanism 44 raises and lowers the main frame 14 and the bottom frame 20 by operating the third drive device 44a. The lifting mechanism 44 can adjust the height dimension from the floor surface to the bottom member 26.

[0030] The control device 46 is provided behind the lifting mechanism 44. The control device 46 controls the operation of the first to third drive devices 40a, 42a, 44a. The control device 46 is connected to a remote control (not shown). The control device 46 operates the first to third drive devices 40a, 42a, 44a based on command signals transmitted from the remote control.

[0031] Next, the side frame 50 that is detachably attached to the main frame 14 will be described.

[0032] 4 is an enlarged plan view showing the attachment portion between the main frame and the side frame located on the right front side in FIG. 5 is a cross-sectional view of the main frame and the side frame in FIG. 4 as viewed from the direction of arrow AA. FIG. 6 is an enlarged perspective view showing the attachment portion between the main frame and the side frame. FIG. 7 is an exploded perspective view showing a state in which the side frame in FIG. 6 is removed from the main frame.

[0033] The side frames 50 are provided to protrude in the left-right direction from the main frame 14. As shown in Figs. 1 and 3, two side frames 50 are provided spaced apart in the left-right direction (short direction) of the bed 10. The side frame 50 located on the right side and the side frame 50 located on the left side are bilaterally symmetrical.

[0034] As shown in Fig. 2, options such as a fence 60 can be attached to the side frame 50. When it is desired to attach an option such as the fence 60, the side frame 50 is attached to the main frame 14. The side frame 50 has a frame portion 51 and an arm portion 53.

[0035] The frame portion 51 is located outside the bottom member 26 in the left-right direction and extends in the front-rear direction (longitudinal direction). The frame portion 51 is a rectangular cylindrical body. As shown in FIG. 1, the frame portion 51 is located at the outermost side in the left-right direction of the bed 10. In other words, the frame portion 51 is the part that determines the width dimension of the bed 10.

[0036] The frame portion 51 has holes 51a for attaching options such as a fence 60. The holes 51a are open at the upper end and extend downward. That is, the holes 51a extend from the upper surface of the frame portion 51 to the lower surface. As shown in FIGS. 1 to 3, in this example, four holes 51a are provided spaced apart in the front-to-rear direction. As shown in FIG. 2, the fence 60 is attached to the frame portion 51 by being inserted into the holes 51a.

[0037] The arm portion 53 extends from the frame portion 51 toward the main frame 14. A plurality of arm portions 53 are provided spaced apart in the front-to-rear direction of the frame portion 51. As shown in Figures 1 and 3, in this example, two arm portions 53 are provided on the frame portion 51. The position of the frame portion 51 is determined by the length of the arm portion 53. As a result, the width dimension of the bed 10 can be changed by appropriately using side frames 50 with arm portions 53 of different lengths.

[0038] Since each arm 53 has the same shape and configuration, the arm 53 located on the front right side shown in Figures 4 to 7 will be described as an example, and a description of the other arms 53 will be omitted.

[0039] The extension portion 54 extends from the frame portion 51. The extension portion 54 is formed by bending a plate material into a concave shape that is open downward. One end side (base end side) of the extension portion 54 in the left-right direction is fixed to the side surface of the frame portion 51 by welding or the like. As shown in FIG. 1 , the extension portion 54 is located below the bottom member 26.

[0040] An opening 54a that penetrates in the vertical direction is formed in the upper surface of the extension 54. The opening 54a is provided on the tip side of the extension 54. The opening 54a makes it easy to see the fastening member 58 that fastens the hook portion 55 to the main frame 14. In other words, the worker can visually check the fastening member 58 through the opening 54a and perform the work of attaching or detaching the fastening member 58.

[0041] The hook portion 55 is provided on the extension portion 54. Specifically, the hook portion 55 is fixed to the other end (tip side) of the extension portion 54 by welding or the like. The hook portion 55 is a portion that hooks onto the main frame 14 when assembled to the main frame 14. Here, "when assembled to the main frame 14" refers to a temporary fastening state before the hook portion 55 is fixed to the main frame 14 by the fastening members 58. The hook portion 55 is configured to be fixed to the main frame 14 by the fastening members 58.

[0042] The hook portion 55 is formed in a recessed shape with an insertion opening 56 at the bottom end, into which the main frame 14 is inserted. That is, the side frame 50 is attached by inserting the hook portion 55 into the main frame 14 from above. The hook portion 55 has an abutment surface portion 55a, an inner facing surface portion 55b, and an outer facing surface portion 55c.

[0043] The contact surface portion 55a forms the upper surface of the hook portion 55. When the hook portion 55 is inserted into the main frame 14, the contact surface portion 55a comes into contact with the upper surface portion 14a of the main frame 14.

[0044] The inner facing surface portion 55b extends downward from the inner end of the abutting surface portion 55a in the left-right direction. When the hook portion 55 is inserted into the main frame 14, the inner facing surface portion 55b abuts against the inner surface portion 14b of the main frame 14. As shown in FIGS. 6 and 7, in this example, the inner facing surface portion 55b extends downward from two locations, the front end and the rear end, of the abutting surface portion 55a. That is, the inner facing surface portion 55b is formed in a bifurcated shape. The shaft portion 58a and the nut 58b of the fastening member 58 are disposed between the front and rear inner facing surface portions 55b. The inner facing surface portion 55b may also be formed as a single plate having a through-hole through which the shaft portion 58a is inserted.

[0045] The outer facing surface portion 55c extends downward from the outer end portion in the left-right direction of the abutment surface portion 55a. When the hook portion 55 is inserted into the main frame 14, the outer facing surface portion 55c abuts against the outer side surface portion 14c of the main frame 14. The other end side of the extension portion 54 is fixed to the outer facing surface portion 55c by welding or the like. The outer facing surface portion 55c has an insertion hole 55c1 through which the shaft portion 58a of the fastening member 58 is inserted.

[0046] As a result, when the hook portions 55 are inserted into the main frame 14, the inner facing surface portions 55b and the outer facing surface portions 55c sandwich the main frame 14 in the left-right direction. Therefore, the side frame 50 is held by the main frame 14 as the hook portions 55 are hooked onto the main frame 14.

[0047] The bed 10 according to the embodiment has the above-described configuration. Next, the attachment and detachment of the side frames 50 will be described.

[0048] As shown in Figure 7, when fixing the side frame 50 to the main frame 14, the hook portions 55 of the arms 53 located at the front and rear are inserted from above the main frame 14. This allows the side frame 50 to be temporarily attached to the main frame 14. In this case, the hook portions 55 of the side frame 50 are caught on the main frame 14, preventing the side frame 50 from falling off the main frame 14 even if the worker releases the side frame 50.

[0049] Next, the fastening member 58 is inserted below the extension portion 54, and the shaft portion 58a is passed through the insertion hole 55c1 of the hook portion 55 and the through-hole 14e of the main frame 14. In this case, the opening 54a of the extension portion 54 allows the worker to insert the shaft portion 58a of the fastening member 58 into the main frame 14 without having to look down into the extension portion 54. This improves the workability of the fastening work of the fastening member 58. Then, the side frame 50 is fixed to the main frame 14 by screwing the nut 58b onto the shaft portion 58a protruding from the inner surface portion 14b of the main frame 14.

[0050] On the other hand, when removing the side frame 50 from the main frame 14, the fastening members 58 are removed from the main frame 14 and the hook portions 55. In this case, even when the fastening members 58 are removed, the side frame 50 is prevented from falling because the hook portions 55 are hooked on the main frame 14. Then, the worker can remove the side frame 50 from the main frame 14 by lifting it up.

[0051] Next, the positional relationship in the left-right direction (short-side direction) of the base frame 12, the main frame 14, and the side frames 50 will be described with reference to FIG. FIG. 8 is a front view of the bed in FIG. 1 as seen from the front side.

[0052] As shown in FIG. 8, a pair of base frames 12 and main frames 14 are provided at intervals in the left - right direction. And the pair of main frames 14 are arranged inside the pair of base frames 12 in the left - right direction. Also, a pair of side frames 50 spaced apart in the left - right direction are arranged outside the pair of base frames 12 in the left - right direction.

[0053] That is, the interval L1 in the left - right direction between the pair of main frames 14 is smaller than the interval L2 in the left - right direction between the pair of base frames 12 (L1 < L2). Also, the interval L3 in the left - right direction between the pair of side frames 50 is larger than the interval L2 in the left - right direction between the pair of base frames 12 (L2 < L3).

[0054] Here, in the above - described prior art, the attachment portion for attaching the side frame protrudes outward in the left - right direction from the main frame. Therefore, when the side frame is removed, the design may be deteriorated due to the attachment portion protruding from the main frame. In the bed 10 according to the present embodiment, since the side frame 50 is directly attached to the main frame 14 extending in the front - rear direction, the design can be improved even when the side frame 50 is removed. Also, since the side frame 50 is directly attached to the main frame 14 extending in the front - rear direction, the number of parts can be reduced. Further, since the bed 10 has no attachment portion protruding from the main frame 14, the width dimension of the main frame 14 can be reduced. Thereby, the transportability when transporting the main frame 14 into a home can be improved. Also, since the main frame 14 can be stored in a warehouse or the like without being bulky, the management efficiency can be improved.

[0055] In the above - described embodiment, the case where one side frame 50 is provided in each of the left - right directions has been described as an example. However, the aspect of the present invention is not limited to this. For example, a plurality of side frames may be provided in the front - rear direction.

[0056] The embodiment may include the following configuration. (Configuration 1) a main frame extending in the front-rear direction; a side frame detachable from the main frame; Equipped with The side frame is a frame portion extending in the front-rear direction; an arm portion extending from the frame portion toward the main frame; and The arm portion is an extension portion extending from the frame portion; a hook portion provided on the extension portion and hooked onto the main frame when the extension portion is assembled to the main frame; A bed characterized by having: (Configuration 2) The mainframe includes: An upper surface portion; an inner surface portion and an outer surface portion extending downward from the upper surface portion; and The hook portion is a contact surface portion that contacts the upper surface portion; an inner facing surface portion extending downward from the abutting surface portion and abutting against the inner side surface portion; an outer facing surface portion extending downward from the abutting surface portion and abutting against the outer side surface portion; The bed according to configuration 1, characterized in that it has (Configuration 3) The bed according to configuration 1 or 2, wherein the frame portion has holes for attaching options. (Configuration 4) The bed according to any one of configurations 1 to 3, wherein the arm portion is provided in a plurality of pieces spaced apart in the front-rear direction of the frame portion. (Configuration 5) a pair of base frames spaced apart in the left-right direction and extending in the front-rear direction; The main frames are provided as a pair spaced apart in the left-right direction, 5. The bed according to any one of configurations 1 to 4, wherein the pair of main frames are disposed on the inner side in the left-right direction of the pair of base frames.

[0057] 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]

[0058] 10 beds 12 Base Frame 12a Legs 14 Mainframe 14a Top part 14b Inner side 14c Outer side 14d Bottom part 14e Through hole 15 Headboard mounting part 20 Bottom Frame 21 Back frame 22 Lumbar frame 23 Knee frame 24 Leg frame 26 Bottom member 30 Back Bottom 32 Waist Bottoms 34 Knee Bottoms 36 Leg bottom 40 Backrest mechanism 40a First driving device 42 Knee lifting mechanism 42a Second drive unit 44 Lifting mechanism 44a Third drive unit 46 Control Device 50 Side frame 51 Frame section 51a Hole 53 Arm 54 Extension 54a opening 55 Hook 55a Contact surface part 55b inner facing surface 55c Outer facing surface part 55c1 Insertion hole 56 Insertion opening 58 Fastening members 58a shaft part 58b Nut 60 Fence body

Claims

1. a main frame extending in the front-rear direction; a side frame detachable from the main frame; Equipped with The side frame is a frame portion extending in the front-rear direction; an arm portion extending from the frame portion toward the main frame; and The arm portion is an extension portion extending from the frame portion; a hook portion provided on the extension portion and hooked onto the main frame when the extension portion is assembled to the main frame; and A bed characterized in that an opening is provided at the tip side of the extension portion through which a fastening member that fastens the hook portion to the main frame can be seen.

2. A main frame extending in the front-rear direction; a side frame detachable from the main frame; Equipped with The side frame is a frame portion extending in the front-rear direction; an arm portion extending from the frame portion toward the main frame; and The arm portion is an extension portion extending from the frame portion; a hook portion provided on the extension portion and hooked onto the main frame when the extension portion is assembled to the main frame; and The mainframe includes: An upper surface portion; an inner surface portion and an outer surface portion extending downward from the upper surface portion; and The hook portion is a contact surface portion that contacts the upper surface portion; a pair of inner opposing surface portions extending downward from the abutting surface portion and abutting against the inner side surface portion; an outer facing surface portion extending downward from the abutting surface portion and abutting against the outer side surface portion; and A bed characterized in that a fastening member for fastening the hook portion to the main frame is disposed between the pair of inner opposing surface portions.

3. 3. The bed according to claim 1, wherein the frame portion has holes for attaching options.

4. 3. The bed according to claim 1, wherein the arm portion comprises a plurality of arms spaced apart from one another in the front-rear direction of the frame portion.

5. a pair of base frames spaced apart in the left-right direction and extending in the front-rear direction; The main frames are provided as a pair spaced apart in the left-right direction, The bed according to claim 1 or 2, wherein the pair of main frames are disposed inside the pair of base frames in the left-right direction.

Images