JP2004222746A - Reclining bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the raising of a head floor from applying a burden on the abdomen or the waist though the structure is simple. <P>SOLUTION: A floor is made up of the head floor 2 supporting the upper half of a human body, a waist floor 3 supporting the waist of the human and a leg floor 4 supporting the legs of the human body. The head floor 2 and/or the leg floor 4 freely rotate around the end side of the waist floor 3 side. The waist floor 3 is formed bendably in the direction linking the head floor 2 and the leg floor 4. the distance between shafts B and C supporting the head floor 2 side end of the waist floor 3 and the leg floor 4 side end can be varied by the turning of the head floor 2 or the leg floor 4. When the head floor 2 or the leg floor 4 turns, the distance between the shafts B and C supporting both ends of the bendable waist floor 3 varies, allowing the waist floor 3 to sink into a bent state. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a reclining bed capable of reclining a floor surface of a head.
[0002]
[Prior art]
Various types of reclining beds that can raise the floor of the head from a horizontal state and lower the floor of the leg from the horizontal state have been provided.
[0003]
However, simply raising the floor of the head causes the person who had been asleep to be pressed down on the abdomen, and is forced into an unreasonable posture, causing pain in prolonged use.
[0004]
To prevent this, Japanese Patent Application Laid-Open No. 2000-166983 (Patent Document 1) proposes a configuration in which the head floor moves upward on the head side as the head floor is raised. . For the human body, when the head floor surface rises from a sleeping state, the head surface is slightly lifted up together with the head floor surface, so that pressure on the abdomen can be eliminated.
[0005]
[Patent Document 1]
JP 2000-166983 A
[Problems to be solved by the invention]
However, in the publication described above, the mechanism for shifting the head floor is complicated, and if the head floor is kept up for a long time, the human body slides down and eventually the abdomen In addition to being pressed, the hips are forced to be in an unreasonable position, which puts a strain on the hips.
[0007]
SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object a simple structure, which can eliminate a burden on the abdomen and waist when the floor of the head is raised. There is a bed to offer.
[0008]
[Means for Solving the Problems]
Thus, in the present invention, a floor surface is configured by a head floor surface supporting the upper body of the human body, a waist floor surface supporting the human waist, and a leg floor surface supporting the human body legs, and a head floor surface and Or, a reclining bed in which a leg floor surface is rotatable around an end portion on a waist floor side, and a waist floor surface is located between a head floor surface and a leg floor surface, and Between the axes that are formed to be flexible in the direction connecting the floor of the floor and the floor of the leg, and that support the end of the waist floor on the head floor side and the end of the leg floor side, respectively. Is variable by the rotation of the floor of the head or the floor of the legs. When the floor of the head or the floor of the leg rotates, the distance between the axes supporting both ends of the flexible waist floor changes, allowing the waist floor to sink and become bent. Things.
[0009]
For the waist floor surface, a member in which a plurality of members having rigidity are sequentially rotatably connected and bendable can be suitably used.
[0010]
In addition, the position of the axis of rotation of the head floor or the leg floor is shifted from the position of the axis that pivotally connects the head floor or the leg floor and the waist floor. Can be suitably used.
[0011]
A drive mechanism for electrically rotating the head floor and / or the leg floor may be provided, and the drive mechanism may be provided with a push-up unit for pushing up the waist floor.
[0012]
The push-up portion is provided on a rotating shaft provided with an arm that pushes up the head floor surface and / or the leg floor surface, and the contact position of the push-up portion that rotates integrally with the arm with the horizontal waist floor surface is set to the above-described rotation position. It may be located closer to the arm than the drive shaft, and may have a second push-up portion for pushing up the waist floor, and the second push-up portion and the push-up portion are connected by a link. You may.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail based on an example of an embodiment. This reclining bed includes a support frame 1, a head floor 2, a waist floor 3, a leg floor 4, and a head floor 2 and a leg. And a drive mechanism 5 for driving the floor section 4. The pair of left and right support frames 1, 1 are inserted through two rotation shafts 50, 50 of the drive mechanism 5, respectively. Connected by a connecting shaft 15 (see FIG. 7). In the figure, reference numeral 8 denotes a side box. The side box 8 which is mounted on one of the left and right support frames 1 by bolts via an arm 80 is provided with a lighting device 81 at the tip of a bendable light arm 82. ing. Further, the operation device 9 shown in FIG. 11 can be stored in the internal storage space covered by the removable lid 83.
[0014]
The head floor 2 is constituted by left and right side plates 20, horizontal bars 21, 21 connecting them, and vertical bars 22, 22 installed between the horizontal bars 21, 21. One end on the side is rotatably connected to the upper end of a support rod 12 rising from the support frame 1. Similarly, the leg floor 4 is constituted by left and right side plates 40, 40, horizontal bars 41, 41 connecting them, and vertical bars 42, 42 spanned between the horizontal bars 41, 41. One end on the side of the surface 3 is rotatably connected to an upper end of a support rod 13 rising from the support frame 1.
[0015]
The waist floor surface 3 is configured as a bendable structure in which a plurality of rigid side plates 31, 32, 33, and 34 are sequentially rotatably connected, and one end of the head floor surface 2 side is connected to the head floor surface 2. Is rotatably connected to the end of the side plate 20, and one end on the leg floor surface 4 side is rotatably connected to the upper end of the support rod 12. A horizontal rail 35 is fixedly installed between the left and right side plates 32, 32, and a bar 36 extending toward the head floor 2 is fixed to the horizontal rail 35. When the head floor surface 2 and the waist floor surface 3 are in a horizontal state, the tip of the bar 36 comes into contact with the lower surface of the horizontal rail 21 of the head floor surface 2 and the head floor surface 2 is lowered. It is also what prevents.
[0016]
It should be noted that the above-described configuration of the floor surfaces 2, 3, and 4 shows only the frame structure thereof. In actuality, the cushion rubber 7 shown in FIG. A wood spring 70 is stretched between the cushion rubbers 7 to form a floor surface. As shown in FIG. 12, the waist floor surface 3 that can be bent may be formed such that both ends of the wires 72, 72 over which the cloth 73 is stretched are fixed to both ends of the waist floor surface 3.
[0017]
The drive mechanism 5 is composed of the two rotation shafts 50, 50 and a drive unit 6 that can individually rotate the rotation shafts 50, 50, and is located on the head floor surface 2 side. As shown in FIG. 6, a pair of left and right arms 51, 51, a support arm 52, and a receiving piece 53 are fixed to the rotating shaft 50. The rotating shaft 50 disposed around the outer periphery of the connecting shaft 15 via the sleeve 16 is rotatable around the axis. The rotating shaft 50 located on the side of the leg floor 3 has a pair of left and right arms 51, 51 and a receiving piece 53 fixed thereto, and is similarly rotatable about the axis.
[0018]
The drive unit 6 of the drive mechanism 5 is suspended and supported by the two rotation shafts 50, 50, and includes a slider (not shown) individually driven in the axial direction by two motors. Each of the sliders is engaged with the receiving pieces 53, 53 of the two rotating shafts 50, 50. For this reason, if the slider is moved by driving a motor, the rotating shaft 50 to which the receiving piece 53 is fixed rotates around the axis.
[0019]
At this time, the pair of arms 51, 51 provided on the rotating shaft 50 on the side of the head floor 2 make the roller 57 at the tip thereof contact the lower surface of the vertical rails 22, 22, and the support arm 52 is The bar 36 is in contact with the roller 57 at the tip. In addition, a pair of arms 51, 51 provided on the rotating shaft 50 on the side of the leg floor surface 4 make the rollers 57 at the tips thereof contact the lower surfaces of the vertical bars 42, 42.
[0020]
Therefore, when the rotating shaft 50 on the side of the head floor 2 is rotated such that the tip of the arm 51 moves upward, the head floor 2 is raised by being pushed up by the arm 51. When the rotating shaft 50 on the side of the leg floor surface 4 is rotated so that the arm 51 moves downward, the leg floor surface 4 supported by the arm 51 rotates about the connection point with the support rod 13 as an axis. Then go down. Reference numerals 29 and 39 in FIG. 4 denote stoppers that limit the movable range of the roller 51 of the arm 51 with respect to the floor surfaces 2 and 4, respectively.
[0021]
Here, the support rod 13 and the side plate 34 of the waist floor surface 3 are also connected by the axis C connecting the leg floor surface 4 and the support bar 13, whereas the side plate of the waist floor surface 3 is connected. As described above, the shaft 30 is connected not to the support bar 12 but to the end of the side plate 20 of the head floor 2 with an axis B, and the axis B connects the head floor 2 and the support bar 12 to each other. It is arranged above the connecting shaft A.
[0022]
For this reason, when the head floor surface 2 is kept horizontal, the waist floor surface 3, which is constructed by sequentially connecting a plurality of side plates 31 to 34 so as to be freely rotatable, is maintained in a horizontal state. If the floor 2 is raised, the axis B rotates around the axis A and the distance between the axes B and C becomes shorter, thereby allowing the waist floor 3 to flex under its own weight. Since the position of the axis B is lowered, the waist floor surface 3 which can be bent when the head floor surface 2 is raised, sinks as shown in FIG. The bent shape due to the indentation depends on the distribution of the human body load applied to the waist floor surface 3. Such sinking and bending of the waist floor surface 3 reduces the burden on the abdomen and waist of the human body.
[0023]
The support arm 51 fixed to the rotating shaft 50 pushes up the waist floor surface 3 when the head floor surface 2 is returned to a horizontal position, and assists the main part floor surface 3 to return to a horizontal position. The load applied to the waist floor 3 acts as a force for pushing up the head floor 2 via the support arm 51 and the rotating shaft 50. FIG. 13 considers this point, and the contact point between the support arm 51 and the bar 36 is located closer to the head floor surface 2 than the rotation shaft 50 when the head floor surface 2 is returned to a horizontal position. It is like that.
[0024]
14 and 15 show another example. This is because, when the waist floor 3 is returned from the bent state to the horizontal state by bending the waist floor 3 by sequentially connecting the plurality of side plates 31 to 34 so as to be freely rotatable, the second support arm 58 is also moved to the waist. The support arm 52 is connected to the crank-shaped second support arm 58 and the support arm 52, which are provided between the support frames 1 and 1, by a link 59. When pushing up the portion of the waist floor 3 closer to the head floor 2, the second support arm 58 also rises and pushes up the portion of the waist floor 3 closer to the leg floor 4.
[0025]
Although the waist floor surface 3 sinks by raising the head floor surface 2, the waist floor surface 3 may sink when the leg floor surface 4 is lowered. This can be realized by displacing the axis connecting the leg floor 4 and the waist floor 3 downward from the axis connecting the support bar 13 and the leg floor 4.
[0026]
【The invention's effect】
As described above, in the present invention, the floor surface is constituted by the head floor surface supporting the upper body of the human body, the waist floor surface supporting the human lumbar region, and the leg floor surface supporting the human body legs. A reclining bed in which a floor surface and / or a leg floor surface is rotatable about an end portion on the waist floor surface side, and the waist floor surface is located between the head floor surface and the leg floor surface. And is formed to be bendable in a direction connecting the head floor surface and the leg floor surface, and supports an end of the waist floor surface on the head floor surface side and an end on the leg floor surface side, respectively. It is characterized in that the distance between the axes is variable by turning the floor of the head or the floor of the leg. When the floor of the head or the floor of the leg rotates, the distance between the axes that support both ends of the flexible waist floor changes, allowing the waist floor to sink and become bent. The load on the abdomen and waist can be reduced by such a change in the shape of the waist floor. In addition, there is no need to shift the head floor at the same time as the rotation of the head, and the head can be realized with a simple mechanism.
[0027]
The above-mentioned waist floor surface is preferably formed of a plurality of members having rigidity that are sequentially rotatably connected and bendable in terms of securing rigidity of the entire bed.
[0028]
In addition, the position of the axis of rotation of the head floor or the leg floor is shifted from the position of the axis that pivotally connects the head floor or the leg floor and the waist floor. Can be provided mechanically simpler and cheaper.
[0029]
A drive mechanism for electrically rotating the head floor and / or the leg floor may be provided, and the drive mechanism may be provided with a push-up unit for pushing up the waist floor. It is possible to reliably hold the bendable waist floor surface in a horizontal state.
[0030]
The push-up portion is provided on a rotating shaft provided with an arm that pushes up the head floor surface and / or the leg floor surface, and the contact position of the push-up portion that rotates integrally with the arm with the horizontal waist floor surface is set to the above-described rotation position. The arm may be located closer to the arm than the moving shaft. In this case, it is possible to prevent the arm from rotating and displacing the head floor surface and / or the leg floor surface from the horizontal position due to the load applied to the push-up portion via the waist floor surface.
[0031]
Further, a second push-up portion for pushing up the waist floor may be provided, and the second push-up portion and the push-up portion may be connected by a link. It is more reliable to keep the waist floor level.
[Brief description of the drawings]
FIGS. 1A and 1B show an example of an embodiment of the present invention, in which FIG. 1A is a side view, and FIG.
FIG. 2 is a perspective view of the same.
FIG. 3 is a plan view of the same.
FIG. 4 is a side view of the same.
FIG. 5 is an end view of the same.
FIG. 6 is a perspective view of a rotating shaft of the above.
FIG. 7 is a partial cross-sectional view of the rotation shaft according to the first embodiment.
FIG. 8 is a perspective view of the cushion rubber.
FIG. 9 is a plan view when the cushion rubber and the wood spring are attached.
FIG. 10 is a perspective view of the same side arm.
FIG. 11 is a front view of the same operating device.
FIG. 12 is a perspective view of another example.
FIG. 13 is a side view of still another example.
14A and 14B show another example, in which FIG. 14A is a plan view, and FIG. 14B is a perspective view of a second support arm.
FIGS. 15A and 15B are side views of the same.
[Explanation of symbols]
2 Head floor 3 Waist floor 4 Leg floor B axis C axis

Claims (6)

The floor is composed of a head floor supporting the upper body of the human body, a waist floor supporting the human waist, and a leg floor supporting the human legs, and the head floor and / or the leg floor is formed. A reclining bed that is rotatable about an end on the waist floor side, wherein the waist floor surface is located between the head floor surface and the leg floor surface, and the head floor surface and the leg portion. The distance between the shafts that are formed to be freely bendable in the direction connecting the floor surface and that support the head floor side end and the leg floor side end of the waist floor, respectively, is the head. A reclining bed characterized by being variable by rotation of a floor surface or a leg floor surface. The reclining bed according to claim 1, wherein a plurality of members having rigidity are sequentially connected to the waist floor surface so as to be freely rotatable and bendable. The position of the axis of rotation of the head floor or the leg floor is shifted from the position of the axis that pivotally connects the head floor or the leg floor and the waist floor. The reclining bed according to claim 1 or 2, wherein: A drive mechanism for electrically rotating the floor of the head and / or the floor of the leg, and the drive mechanism includes a push-up portion for pushing up the floor of the waist. Reclining bed according to item. The push-up portion is provided on a rotating shaft provided with an arm that pushes up the head floor surface and / or the leg floor surface. The reclining bed according to claim 4, wherein the reclining bed is located closer to the arm than the moving shaft. The reclining bed according to claim 4, further comprising a second push-up portion for pushing up the waist floor, wherein the second push-up portion and the push-up portion are connected by a link.

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