JP2010207544A - Bedclothes lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bedclothes lifting device by which the load of upper bedclothes acting on a user on a bed is reduced or eliminated and the posture, action, movement, or action range of the user is not limited or hindered by the turned up upper bedclothes. <P>SOLUTION: The bedclothes lifting device includes: flexible wires (7, 8) engaged to the four corners of the upper bedclothes (H) and suspending the bedclothes; a winding up device for winding up and sending out the respective wires; and a counter (10) or a frame supporting the winding up device in an upper region of the bedclothes. The winding device has a rotation drive roller (3) rotating around a substantially horizontal rotation axial line, a load adding devices (9, 20, 70) for reducing the load of the rotation drive roller providing the rotation drive roller with the load corresponding the weight of the bedclothes so as to cancel the load which the weight of the upper bedclothes provides to rotation drive roller, and a tension providing device (80) preventing the loosening and flexion of the wires. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bedding lifting apparatus, and more particularly to a bedding lifting apparatus that lifts and lowers an upper bedding such as a comforter and an upper blanket.

  In general, a futon is a padding of cotton, feathers, wool, etc. in a cloth (side cloth or side cloth), and the weight of the futon depends on the type of padding and the degree of drying of the futon. It is quite different. Many healthy young or middle-aged people will not be aware of the weight of the comforter at bedtime and will not see it as a problem. However, many victims, post-operative patients, disabled people, elderly people, etc., are burdened or resisted by the weight of the comforter, and sleeping, free posture, turning over, etc. are disturbed, or the wound or affected part due to the weight of the comforter Experience being forced into an inconvenient posture, conscious of pressure on the

  For example, JP-A-10-57427 and JP-A-2002-177342 have been proposed as conventional techniques intended to prevent relatively weak people such as wounded persons and the elderly from feeling the weight of the comforter. Describes an automatic comforter device that mechanically springs up or covers a comforter. This device is composed of struts arranged on the side of the bed and lattice-like duvet supports attached to the top of the struts, and the duvet supports pivot about the pivot axis of the top of the struts. Cover the person on the bed with the comforter or flip the comforter.

JP-A-10-57427 JP 2002-177342 A

  The automatic comforter device configured as described above holds the raised comforter in an inclined state on one side edge of the bed, so that the raised comforter occupies one side edge of the bed, and the posture, motion, movement and It considerably restricts or prevents the range of action. In addition, a doctor, a nurse, a caregiver, or the like can only contact a patient or the like on the bed only from the opposite side of the automatic comforter device at the time of examination, treatment, care, or the like.

  Moreover, the automatic comforter device having the above-described configuration only simulates an artificial operation of covering or jumping up the comforter, and cannot hold the comforter on the bed in a state where the weight of the comforter acting on the human body on the bed is reduced. .

  The present invention has been made in view of such problems, and the object of the present invention is to reduce or eliminate the load of the over bedding acting on the user himself / herself on the bed, Another object of the present invention is to provide a bedding lifting apparatus that can raise a bedding to a state or position where a posture, movement, movement, or range of action of a doctor, a nurse, or the like is not restricted or hindered.

  In order to achieve the above object, the present invention provides a bedding lifting apparatus for lifting and lowering an upper bedding such as a comforter and an upper blanket, and a flexible wire rod moored at at least four corners of the upper bedding and suspending the bedding. A winding device for winding or unwinding each wire, a supporting means for supporting the winding device in an upper area of the bedding, and applying tension to the flexible wire so as to prevent the flexible wire from being loosened or loosened. A bedding raising / lowering device comprising a tension applying device (80).

  According to the above configuration of the present invention, the upper bedding on the bed or the mattress is moved up and down as a whole according to the winding or feeding operation of the flexible wire by the rotation drive roller. As the upper bedding rises, the load (weight) of the upper bedding acting on the person on the bed or the mattress is reduced or eliminated. As the bedding is raised, the entire circumference of the bed or mattress is opened, so that the posture, movement, movement or action range of the person, doctor, nurse, etc. on the bed is not restricted or hindered. Also, when the bedding descends to the bed or mattress and the bedding load is reduced and the tension of the flexible wire disappears, the tension applying device (80) prevents the flexible wire from loosening or loosening. Tension is applied to the flexible wire.

  According to the bedding lifting apparatus of the present invention, while reducing or eliminating the load of the bedding acting on the user himself / herself on the bed, the posture, movement, movement or behavior of the person himself / herself, the doctor, the nurse, etc. on the bed The overlaid bedding can be raised to a state or position such that the range is not constrained or obstructed.

It is a perspective view which shows the whole structure of the bedding raising / lowering apparatus which concerns on 1st Example of this invention. It is a top view of a bedding lifting apparatus. It is sectional drawing of a bedding raising / lowering apparatus, and the state which lowered | hung the upper bedding most was shown. It is sectional drawing of a bedding raising / lowering apparatus, and the state which raised the top bedding slightly is shown. It is sectional drawing of a bedding raising / lowering apparatus, and the state which raised the overlaid bedding a little like FIG. 4 is shown. It is sectional drawing of a bedding raising / lowering apparatus, and the state which raised the top bedding further is shown. It is sectional drawing of a bedding raising / lowering apparatus, and the state which raised the top bedding most is shown. It is sectional drawing of a bedding raising / lowering apparatus, and the state which suspended the upper bedding which processed the edge part specially with the bedding raising / lowering apparatus is shown. It is sectional drawing of a bedding raising / lowering apparatus, and the state which suspended the upper bedding which specially processed the edge part with the bedding raising / lowering apparatus similarly to FIG. FIG. 10 is a front view of the bedding lifting apparatus, and shows a state in which the upper bedding shown in FIGS. 8 and 9 is raised. FIG. 10 is a front view of the bedding lifting apparatus, and shows a state in which the upper bedding shown in FIGS. 8 and 9 is raised most. It is a top view which shows the whole structure of the bedding raising / lowering apparatus which concerns on 2nd Example of this invention. It is sectional drawing which shows the whole structure of the bedding raising / lowering apparatus shown in FIG. It is sectional drawing which shows the whole structure of the bedding raising / lowering apparatus shown in FIG. It is a top view which shows the structure of the raising / lowering unit shown in FIGS. It is sectional drawing of the raising / lowering unit in the II line, the II-II line, and the III-III line of FIG. It is the top view which shows the structure of a rotation amount detection apparatus, IV-IV sectional view, and VV sectional view. It is sectional drawing which illustrates the form of the movement of the movable member which arises at the time of rotation of a drive roller. It is sectional drawing which shows various arrangement | positioning of a constant load spring unit, a drive roller, and a flexible wire. It is a top view which shows the whole structure of the bedding raising / lowering apparatus based on 3rd Example of this invention. It is sectional drawing which shows the whole structure of the bedding raising / lowering apparatus shown in FIG. It is sectional drawing which shows the whole structure of the bedding raising / lowering apparatus shown in FIG. It is the top view which shows the structure of the raising / lowering unit shown in FIGS. 20-22, VI-VI sectional view, VII-VII sectional view, and VIII-VIII sectional view. It is the top view which shows the structure of the tension | tensile_strength provision apparatus arrange | positioned at a raising / lowering unit, a front view, a right view, and a left view. It is a front view which shows the action | operation form of the tension | tensile_strength provision apparatus shown in FIG. It is a top view which shows the whole structure of the bedding raising / lowering apparatus based on 4th Example of this invention. It is sectional drawing which shows the whole structure of the bedding raising / lowering apparatus shown in FIG. It is sectional drawing which shows the whole structure of the bedding raising / lowering apparatus shown in FIG. It is a top view which shows the structure of the raising / lowering unit shown in FIGS. 26-28, IX-IX sectional view, XX sectional view, and XI-XI sectional view. It is a top view which shows the whole structure of the bedding raising / lowering apparatus based on 5th Example of this invention. It is sectional drawing which shows the whole structure of the bedding raising / lowering apparatus shown in FIG. It is sectional drawing which shows the whole structure of the bedding raising / lowering apparatus shown in FIG. It is a top view which shows the structure of the raising / lowering unit shown in FIGS. 31-32, XII-XII sectional view, and XIII-XIII sectional view. It is the top view which shows the structure of the tension | tensile_strength provision apparatus arrange | positioned at a raising / lowering unit, a front view, and a right view. It is a front view which shows the action | operation form of the tension | tensile_strength provision apparatus shown in FIG. It is a front view which shows the action | operation form of the tension | tensile_strength provision apparatus shown in FIG. It is sectional drawing which shows the action | operation form of the raising / lowering apparatus shown to FIGS. It is the perspective view, the top view, and partial sectional view which show schematically the suspension means of a comforter.

In a preferred embodiment of the present invention, the following configuration is adopted.
(1) The idle roller is arranged in parallel with the drive roller substantially in parallel. The flexible wire that suspends one side portion of the top bedding hangs down via the outer periphery of the idler roller. As a modified example, a plurality of driving rollers are arranged in parallel in parallel, and the flexible rollers on each side are controlled synchronously by interlocking the driving rollers, so that the upper bedding can be raised and lowered. good.
(2) The tension applying device (80) includes a swinging member (90) that pulls the vertical portion of the flexible wire to which the load of the overlaid bedding acts and applies tension to the vertical portion of the flexible wire.
(3) The tension applying device (80) urges the oscillating member (90) upward and urges the oscillating member to rotate upward when the load acting on the vertical portion of the flexible wire is reduced. (85) and a lowered position detecting means (111) for detecting the lowest lowered position of the bedding by turning the swinging member upward.
(4) The tension applying device (80) is a raised position detector that is elastically deformed or displaced by engaging with engaging means provided at the lower end (7a, 8a) of the vertical portion of the flexible wire. 120-123) and elevated position detecting means (125) for detecting deformation or displacement of the detector.
(5) The hoisting device cancels the load applied to the rotation drive roller by the rotation drive roller that is wound around the flexible wire and rotates about the substantially horizontal rotation axis, and the weight of the upper bedding. And a load applying device that applies a load corresponding to the weight of the bedding to the rotation driving roller to reduce the load on the rotation driving roller. The load applying device reduces the load on the rotation driving roller and prevents an unintentional sudden drop of the overlaid bedding.
(6) The load applying device (70) includes a constant load spring (71) and a load applying device in which one end is connected to the outer end of the constant load spring and the other end is wound around the rotation drive roller. Flexible wire rod (73). A substantially constant tension is applied to the flexible wire for load application by the constant load spring.
(5) The bedding lifting device includes a spiral groove (62) formed on the outer peripheral surface of the rotation drive roller, a movable member (63) including a driven pin (64) extending into the spiral groove, and a position of the movable member. And a control device (U) for restricting the rotation of the drive roller based on the detection result of the position detection means.
(6) The drive roller has a structure in which an electric motor, a speed reducer, and an electromagnetic brake are built in the roller.
(7) A remote-operated manual operation switch is connected to the control device.
(8) As a support means, a gantry composed of an assembly of a column supported on the floor and a horizontal member supported on the column, or a framework of a building, a slab, a beam, a hut, a ceiling structure, etc. A supporting member such as a horizontal member, a frame, a frame, a suspension member, or a bracket supported by the building structure material can be suitably used.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  1, FIG. 2, FIG. 3 and FIG. 4 are a perspective view, a plan view, and a cross-sectional view showing the overall configuration of the bedding lifting apparatus according to the first embodiment of the present invention.

  The raising / lowering drive unit 2 of the bedding raising / lowering device 1 is disposed in the upper area of the bed B. The raising / lowering drive part 2 has the drive roller 3 and the idle roller 4 which are arrange | positioned horizontally and in parallel. The driving roller 3 and the idler roller 4 extend in parallel with the longitudinal direction of the bedding. End portions of the driving roller 3 and the idle roller 4 are supported by the horizontal members 11 and 12. The ends of the horizontal members 11 and 12 are supported by the left and right beam members 13 and 14. The beam members 13 and 14 are supported by front, rear, left and right vertical columns 15, 16, 17 and 18 supported by the floor F. In this example, the horizontal members 11 and 12, the beam members 13 and 14, and the vertical struts 15, 16, 17, and 18 are made of square steel pipes that have been subjected to an appropriate paint finish and the like, and support the load of the bedding H The gantry 10 is configured.

  The drive roller 3 has a structure in which an electric motor, a speed reducer, and an electromagnetic brake are built in the roller. As the driving roller 3, a driving roller constituting a roller of the roller conveyor, for example, a driving roller used for a product or intermediate product conveyance line (roller conveyor) in a manufacturing factory for machine parts or the like can be preferably used. Examples of drive rollers that are relatively easily available on the market include products such as a product name “Power Mora” (manufactured by Ito Electric Co., Ltd.) and a product name “pulse motor” (manufactured by Kyowa Seisakusho Co., Ltd.). The support shaft 5 protruding from both ends of the drive roller 3 is fixed to the horizontal members 11 and 12, and the drive roller 3 is suspended between the horizontal members 11 and 12.

  Flexible wire (strands) 7, 8, 9 are wound around the drive roller 3. As the flexible wire 7, 8, 9, for example, a fiber, synthetic resin string, braid, band, or the like can be preferably used. The base end portion of the flexible wire 7 is fixed to the outer peripheral surface of the drive roller 3. The flexible wire 7 is wound around the outer peripheral surface of the drive roller 3, and its free end hangs down from the outer peripheral surface of the drive roller 3. The flexible wire 7 is wound around the outer peripheral surface of the drive roller 3 by the rotation of the drive roller 3 in the clockwise direction (winding direction) R shown in FIG. 3, and the distal end portion 7 a of the flexible wire 7 is raised. . The flexible wire 7 is fed downward from the driving roller 3 by the rotation of the driving roller 3 in the counterclockwise direction (feeding direction).

  The proximal end portion of the flexible wire 8 is also fixed to the outer peripheral surface of the drive roller 3. The flexible wire 8 is wound around the outer peripheral surface of the drive roller 3 in the same direction as the flexible wire 7, extends from the outer peripheral surface of the drive roller 3 toward the idler roller 4, and passes through the outer peripheral surface of the idler roller 4. Then, it hangs down from the outer peripheral surface of the idle roller 4. A support shaft portion 6 protruding from both ends of the idler roller 4 is fixed to the horizontal members 11 and 12, and the idler roller 4 is suspended between the horizontal members 11 and 12. The flexible wire 8 is also wound around the outer peripheral surface of the drive roller 3 by the rotation of the drive roller 3 in the clockwise direction (winding direction) R shown in FIG. 3, and the distal end portion 8 a of the flexible wire 8 rises. . The flexible wire 8 descends downward from the idle roller 4 by the rotation of the driving roller 3 in the counterclockwise direction (feeding direction).

  The proximal end portion of the flexible wire 9 is also fixed to the outer peripheral surface of the drive roller 3, but the flexible wire 9 is wound around the outer peripheral surface of the drive roller 3 in the direction opposite to the flexible wires 7 and 8. Turned. The winding position of the flexible wire 9 corresponds to the position of the column 15, and the flexible wire 9 passes through the longitudinal slit 19 formed in the side wall of the beam member 13 or the column 15. The flexible wire 9 hangs down in the hollow portion of the column 15 via the outer periphery of the guide member 21 disposed inside the column 15. The distal end portion (lower end portion) of the flexible wire 9 is connected to the weight 20. The weight 20 is made of a metal weight having a rectangular parallelepiped outline and having a weight equivalent to that of the comforter H, and has a transverse section corresponding to the square section of the support column 15.

  A pair of upper and lower limit switches 22 and 23 are attached to a predetermined position of the column 15. The limit switches 22 and 23 are arranged at the upper end position and the lower end position of the weight 20. The limit switches 22 and 23 are connected to the control unit U via control signal lines S1 and S2. The control unit U is connected to an AC power source and is connected to a drive unit of the drive roller 3 via a power supply line / control signal line T. The control unit U is also connected to a manually operated hand switch 25 via a control signal line V.

  The free ends of the flexible wires 7 and 8 are anchored to the comforter H through a substantially horizontal grid-like intermediate frame 30. The intermediate frame 30 is composed of linear members 31 and 32 arranged vertically and horizontally in the longitudinal direction and the width direction of the bed B and the mattress K. The linear members 31 and 32 are made of rod-like or rod-like members having a cross-sectional diameter of about 1 to several centimeters made of a material such as natural wood, synthetic wood, wood-based material, synthetic resin, elastomer or glass fiber. The linear members 31 and 32 are integrally connected by an fastener or the like at the intersection. The distal ends 7a and 8a of the flexible wires 7 and 8 are anchored to the member 31 or 32 by an anchoring tool 33 such as a ring member. An anchor member 35 such as a cloth or fiber string or band is connected to the upper comforter H by sewing or the like. The anchoring member 35 is suspended from the member 31 or 32 by the flexible wire 34.

  FIG. 3 shows a state where the upper comforter H is lowered most. The weight 20 is located at the sensing position of the upper limit switch 22, and the control unit U detects this and stops the driving roller 3. When the hand switch 25 is operated to operate the driving roller 3, the driving roller 3 rotates in the direction of arrow R. The flexible wires 7 and 8 are wound around the driving roller 3, the intermediate frame 30 and the comforter H are raised, and the weight 20 is lowered. This state is shown in FIGS.

  FIG. 4 is a side view of the bedding lifting device showing a state where the upper bedding is slightly raised, and FIG. 5 is a front view showing the position of the comforter H corresponding to FIG. As shown in FIGS. 4 and 5, the load of the comforter H acting on the human body on the bed B is greatly reduced, and the comforter H does not press the human body. The person on the bed B is free from the weight of the comforter H even if it is extremely weak, and can turn over freely.

  6 and 7 show a state where the comforter H is further raised.

  As shown in FIG. 6, when the comforter H is greatly raised, a large space is formed below the comforter H. A person on the bed B can move or act freely on the left and right sides of the bed. A doctor, a nurse, a caregiver, etc. can contact a person on the bed B relatively freely from both sides of the bed B.

  As shown in FIG. 7, when the comforter H is raised to the highest position, this space further expands. The weight 20 descends to the lowest position. The weight 20 descends to the sensing position of the lower limit switch 23, and the control unit U detects this and stops the driving roller 3.

  The control unit U operates or stops the driving roller 3 at an arbitrary position within the movable range by manual operation of the hand switch 25. Therefore, the user can stop the comforter H at an arbitrary position between the highest position (FIG. 7) and the lowest position (FIG. 2).

  FIG.8 and FIG.9 is sectional drawing of the bedding raising / lowering apparatus 1 which shows the state which suspended the comforter H specially processed so that the edge Ha may hang down with the bedding raising / lowering apparatus. 10 and 11 show a state in which such a comforter H is lifted by the bedding lifting / lowering device 1.

  As shown in FIGS. 8 and 9, the comforter H includes an edge Ha that hangs down so as to close the periphery of the comforter H when it is raised. The edge Ha prevents the warm air staying in the space below the comforter H from escaping to the periphery. Therefore, a warm space is formed under the comforter H. As shown in FIGS. 10 and 11, when the comforter H is moved up and down, the comforter H rises in a form in which the edge Ha is suspended from its periphery.

  FIG. 38 is a perspective view, a plan view, and a partial sectional view schematically showing comforter suspension means suitable for suspension of such comforter H.

  A preferred suspension means for the comforter H having the edge Ha is shown in FIGS. 38 (A) and 38 (B). The lattice-shaped intermediate frame 30 is suspended by the flexible wires 7 and 8 at both end portions of the left and right linear members 31. The comforter H is suspended at three locations (6 locations in total) along each of the left and right linear members 31, and is suspended at one central portion (2 locations in total) of the front and rear linear members 32.

  38 (C) shows an eyelet fitting (cylindrical rivet) 36 that penetrates the comforter H. FIG. The eyelet fitting 36 constitutes the anchoring member 35 described above. The eyelet fitting 36 firmly clamps the comforter H via a cushioning material 37 such as natural or synthetic leather. The flexible wire 34 passes through the through hole 38 of the eyelet fitting 36. The lower end portion of the flexible wire 34 is provided with retaining means (not shown) such as a knot, a bundle, a node, and a retaining tool.

  FIGS. 12, 13 and 14 are a plan view and a cross-sectional view showing the overall configuration of the bedding lifting apparatus according to the second embodiment of the present invention. 15 is a plan view showing the configuration of the elevating unit shown in FIGS. 12 to 14, and FIGS. 16A to 16C are taken along lines II, II-II and III- of FIG. It is sectional drawing in an III line. In each of the drawings, the same reference numerals are assigned to substantially the same constituent elements or constituent members as those of the first embodiment.

  The bedding lifting apparatus 1 of this example includes a lifting unit 50 disposed in an upper area of the bed B. The elevating unit 50 has a rectangular frame for suspending the driving roller 3 above the bed B. The rectangular frame includes horizontal members 51 and 52 supported by the beam members 13 and 14, and horizontal members 53 and 54 supported by the horizontal members 51 and 52. The horizontal members 51 and 52 are installed between the beam members 13 and 14 and extend in the width direction of the bed B. The horizontal members 53 and 54 are suspended between the horizontal members 51 and 52 and extend in the longitudinal direction of the bed B. The horizontal members 51 to 54 are made of, for example, a square steel pipe, a die steel, a metal molding material, or the like that has been subjected to an appropriate paint finish.

  The elevating unit 50 includes a rotation amount detection device 60 that detects the rotation amount of the drive roller 3, a constant load addition device 70 that applies a constant load to the drive roller 3, and a pair of pulleys 56 attached to the horizontal member 54. And have.

  As in the first embodiment, the flexible wires 7 and 8 are wound around the drive roller 3. As shown in FIGS. 16B and 13, the flexible wire 7 is wound around the outer peripheral surface of the driving roller 3 and hangs down from the outer peripheral surface of the driving roller 3. The flexible wire 7 is wound around the outer peripheral surface of the drive roller 3 by the rotation of the drive roller 3 in the winding direction R, and the distal end portion 7a of the flexible wire 7 is raised. The flexible wire 7 is fed out from the drive roller 3 by the rotation of the drive roller 3 in the feed-out direction, and the distal end portion 7a of the flexible wire 7 is lowered. The flexible wire 8 is wound around the outer peripheral surface of the drive roller 3 in the same direction as the flexible wire 7 as shown in FIG. The flexible wire 8 extends from the outer peripheral surface of the drive roller 3 toward the pulley 56, turns downward by the outer peripheral surface of the pulley 56, and hangs down from the pulley 56. As shown in FIGS. 16C and 13, the flexible wire 8 is wound around the outer peripheral surface of the drive roller 3 by the rotation of the drive roller 3 in the winding direction R, and the distal end portion 8 a of the flexible wire 8. Will rise. The flexible wire 8 is fed out from the drive roller 3 by the rotation of the drive roller 3 in the feed-out direction, and the distal end portion 8a of the flexible wire 8 is lowered.

  FIG. 17 is a plan view showing a configuration of the rotation amount detection device 60, a sectional view taken along line IV-IV, and a sectional view taken along line VV. As shown in FIG. 17A, the rotation amount detection device 60 includes a spiral protrusion 61 formed on the outer peripheral surface of the driving roller 4, a driven pin 64 having a circular cross section that engages with the protrusion 61, The movable member 63 includes a driven pin 64, a guide member 67 that movably supports the movable member 63, and a pair of left and right limit switches 65 supported by the guide member 67. As shown in FIG. 15, one end of the guide member 67 is connected to the horizontal member 52, and the other end of the guide member 67 is connected to the horizontal member 53 via a bracket 69. As shown in FIG. 17, the guide member 67 is formed of a metal tube having a square cross section that extends in parallel with the drive roller 3. The movable member 63 is supported by the guide member 67 so as to be movable in the axial direction of the guide member 67. The ridge 61 is formed of a metal wire having a square cross section wound spirally around the outer peripheral surface of the drive roller 3. A helical cam groove 62 having a square cross section is formed on the outer periphery of the drive roller 3 by the protrusion 61. The driven pin 64 protrudes integrally and horizontally from the movable member 63 and extends into the cam groove 62.

  The ridge 61 and the driven pin 64 are relatively displaced in the axial direction of the driving roller 3 in accordance with the rotation of the driving roller 4, and the movable member 63 is an arrow M corresponding to the relative displacement of the ridge 61 and the driven pin 64. Or, it moves in the direction of arrow N (FIG. 17A). The left and right limit switches 65 each have a detector 66 that can contact the movable member 63. As shown in FIG. 12, each limit switch 65 is connected to the control unit U via control signal lines S3 and S4. The control unit U is connected to the AC power source, the driving unit of the driving roller 3 and the hand switch 25 as in the first embodiment.

  FIG. 18A and FIG. 18B are cross-sectional views illustrating the moving form of the movable member 63 that occurs when the drive roller 3 rotates. As shown in FIG. 18A, when the driving roller 3 rotates in the arrow R direction (winding direction), the driven pin 64 is displaced in the arrow M direction by the rotation of the cam groove 62, and the movable member 63 is moved in the arrow M direction. Move in the direction. As shown in FIG. 18B, when the movable member 63 contacts the detector 66, the limit switch 65 is activated, and the control unit U (FIG. 12) stops the operation of the drive roller 3. When the drive roller 3 rotates in the direction opposite to the arrow R (feeding direction), the driven pin 64 is displaced in the arrow N direction following the rotation of the cam groove 62, and the movable member 63 moves in the arrow N direction. When the movable member 63 contacts the detector 66 of the limit switch 65 on the opposite side, the limit switch 65 is activated, and the control unit U (FIG. 12) stops the operation of the drive roller 3.

  The configuration of the constant load applying device 70 is shown in FIG. The constant load applying device 70 includes a constant load spring unit 71 attached to the horizontal member 54, a moving pulley 72 connected to a metal spring outer end portion of the constant load spring unit 71, and the driving roller 3 and the moving pulley 72. It is comprised from the hung flexible wire 73 and the fixed pulley 74 attached to the horizontal member 53 by the bracket (not shown). The flexible wire 73 is wound around the driving roller 3 by the rotation of the driving roller 3 or is fed out from the driving roller 3.

  In a state where the flexible wire 73 is wound around the drive roller 3 as indicated by an arrow in FIG. 16A, the constant load spring unit 71 is stationary with the metal spring being fed out from the drum. The constant load spring unit 71 always generates a constant elastic restoring force (elastic force) regardless of the length (stroke) of the metal spring, so that a constant load P always acts on the drive roller 3. . The weight of the comforter H acts on the driving roller 3 via the flexible wires 7 and 8, and the load of the comforter H gives a torque in the direction opposite to the load P to the driving roller 3. The load P and the comforter H load cancel each other.

  As shown in FIG. 16A, the flexible wire 73 extends from the driving roller 3 to the moving pulley 72, turns by the moving pulley 72 and extends to the fixed pulley 74, and further turns by the fixed pulley 74 to move the moving pulley. It is tightened to 72 tightening portions 75. The elastic restoring force of the constant load spring unit 71 always acts on the pulleys 72 and 74 and the driving roller 3 as the tension of the flexible wire 73. The flexible wire 73 is displaced with a stroke corresponding to the up-and-down movement of the comforter H, but the flexible wire 73 is fastened to the metal spring outer end portion (tightening portion 75) via the pulleys 72 and 74. Therefore, the displacement amount of the outer end portion of the metal spring (tightening portion 75) is much smaller than the displacement amount of the flexible wire 73. Therefore, a constant load spring having a small allowable stroke can be used as the spring of the constant load spring unit 71.

  FIG. 19 is a cross-sectional view illustrating various arrangements of the constant load spring unit 71, the drive roller 3, and the flexible wire 73.

  The constant load applying device 70 shown in FIG. 19A has a configuration in which the distal end portion of the flexible wire 73 is directly connected to the metal spring outer end portion 76. In this configuration, the amount of displacement of the flexible wire 73 and the stroke of the constant load spring unit 71 substantially match. For this reason, a metal spring (constant load spring) having a relatively long allowable stroke must be adopted as the spring of the constant load spring unit 71.

  A constant load applying device 70 shown in FIG. 19B includes a constant load spring unit 71 attached to the horizontal member 54, a moving pulley 72 connected to a metal spring outer end 76 of the constant load spring unit 71, And a connector 77 attached to the horizontal member 53. The flexible wire 73 is fastened to the connector 77 via the moving pulley 72. In this configuration, the stroke of the metal spring (constant load spring) with respect to the amount of displacement of the flexible wire 73 is halved.

  A constant load applying device 70 shown in FIG. 19C has a constant load spring unit 71, a moving pulley 72 and a constant pulley 74, as in the embodiment shown in FIGS. 12 to 16. The flexible wire 73 extending from the driving roller 3 to the moving pulley 72 is turned by the moving pulley 72 and extends to the fixed pulley 74, and further turned by the fixed pulley 74 and fastened to the tightening portion 75 of the moving pulley 72. The constant load applying device 70 shown in FIG. 19D further includes a constant pulley 77 attached to the horizontal member 54, and the fastening tool 75 is disposed on the horizontal member 53 or the constant pulley 74. The flexible wire 73 extends from the driving roller 3 to the fixed pulley 77, is turned by the fixed pulley 77 and extends to the fixed pulley 74, is turned by the fixed pulley 74 and extends to the moving pulley 72, and is further turned by the moving pulley 74. The tightening portion 75 is tightened. A constant load applying device 70 shown in FIG. 19 (E) further includes a constant pulley 78 attached to a bracket 79 of the horizontal member 54. The flexible wire 73 turned by the moving pulley 72 extends to the fixed pulley 78 and is further turned by the fixed pulley 78 and fastened to the tightening portion 75 of the moving pulley 72. According to the constant load applying device 70 shown in FIGS. 19B to 19E, the stroke of the metal spring (constant load spring) generated in association with the rotation of the drive roller 3 can be reduced. A constant load spring having a small allowable stroke can be used as the spring of the constant load spring unit 71.

  With reference to FIGS. 12-19, the action | operation of the bedding raising / lowering apparatus 1 of this example is demonstrated.

  12 to 14 show a state where the upper comforter H is lowered. When the hand switch 25 is operated to drive the driving roller 3 upward, the flexible wires 7 and 8 are moved to the driving roller 3 as indicated by an arrow R in FIGS. 16 (B) and 16 (C). As a result, the intermediate frame 30 and the comforter H rise. At the same time, as indicated by an arrow R in FIG. 16A, the flexible wire 73 is drawn out from the driving roller 3, and the constant load spring unit 71 drums the metal spring by its elastic restoring force (elastic force). Take up around. During such operation, the constant load spring unit 71 continues to apply a constant load P to the flexible wire 73. Since the weight of the comforter H is offset with the load P, the load on the driving roller 3 is reduced.

  As shown in FIG. 18, the movable member 63 moves in the direction of the arrow M along with the rotation of the driving roller 3, contacts the detector 66, and operates the limit switch 65. When the limit switch 65 is activated, the control unit U (FIG. 12) stops the operation of the drive roller 3. Therefore, the highest rise position (upper limit) of the comforter H is set by the positional relationship between the limit switch 65 and the movable member 63.

  When the hand switch 25 is operated to drive the driving roller 3 to the lowering side, the flexible wires 7 and 8 are fed out from the driving roller 3 and the intermediate frame 30 and the comforter H are lowered. At the same time, as indicated by an arrow in FIG. 16D, the flexible wire 73 is wound around the drive roller 3, and the metal spring of the constant load spring unit 71 is pulled out from the drum. During such operation, the constant load spring unit 71 continues to apply a constant load P to the flexible wire 73, so that the weight of the comforter H is offset with the load P. For this reason, the sudden fall of the comforter H which is not intended can be prevented.

  As the drive roller 3 rotates, the movable member 63 moves in the direction of arrow N (FIG. 18), contacts the detector 66 on the opposite side, and activates the limit switch 65. When the limit switch 65 is activated, the control unit U (FIG. 12) stops the operation of the drive roller 3. Therefore, the lowest descending position (lower limit) of the comforter H is also set by the positional relationship between the limit switch 65 and the movable member 63.

  20 is a plan view showing the overall configuration of the bedding lifting apparatus according to the third embodiment of the present invention, and FIGS. 21 and 22 are cross-sectional views showing the overall configuration of the bedding lifting apparatus shown in FIG. In each figure, the same reference numerals are assigned to substantially the same constituent elements or constituent members as those of the first and second embodiments.

  The bedding raising / lowering apparatus 1 of this example has the raising / lowering unit 50 arrange | positioned in the upper area of the bed B similarly to 2nd Example. The lifting unit 50 has a rectangular frame for suspending the driving roller 3 above the bed B as in the second embodiment, but the horizontal members 51 and 52 of the rectangular frame are supported on the beam members 13 and 14. Then, the axis of the driving roller 3 is oriented in the width direction of the bed B. The bedding lifting / lowering device 1 of this example includes a tension applying device 80 that applies tension to the flexible wires 7 and 8 in order to prevent the flexible wires 7 and 8 from being loosened or loosened.

  FIG. 23 is a plan view, a sectional view taken along line VI-VI, a sectional view taken along line VII-VII, and a sectional view taken along line VIII-VIII, showing the configuration of the lifting unit 50 shown in FIGS.

  The flexible wires 7 and 8 wound around the outer peripheral surface of the drive roller 3 extend in the longitudinal direction of the bed B, and are turned downward by the pulley 100 of the tension applying device 80 and hang down. The flexible wire rods 7 and 8 are wound around the outer peripheral surface of the drive roller 3 by the rotation of the drive roller 3 in the winding direction R, and the distal end portions 7a and 8a (FIG. 21) of the flexible wire rods 7 and 8 are raised. As in the previous embodiment, the constant load applying device 70 always applies a constant load P to the drive roller 3, so that the load on the drive roller 3 is reduced. The flexible wire rods 7 and 8 are fed out from the drive roller 3 by the rotation of the drive roller 3 in the feed-out direction, and the distal end portions 7a and 8a (FIG. 21) of the flexible wire rods 7 and 8 are lowered.

  24 is a plan view, a front view, a right side view, and a left side view showing the configuration of the tension applying device 80, and FIG. 25 is a front view showing an operation mode of the tension applying device 80.

  The tension applying device 80 includes a support member 81 fixed to the upper surfaces of the horizontal members 53 and 54, and a hollow swinging member 90 that is rotatably supported by a support shaft 91 of the support member 81. The swinging member 90 applies tension to the vertical portions of the flexible wires 7 and 8 by pulling upward on the vertical portions of the flexible wires 7 and 8 on which the load of the comforter H acts.

  The spring locking tool 82 protrudes from the top of the support tool 81, and one end of the coil spring 85 is locked to the locking tool 82. The other end of the spring 85 is anchored to a spring locking tool 86 projecting from the upper surface of the swing member 90. The spring 85 urges the swinging member 90 upward, and constitutes biasing means for rotating the swinging member 90 upward when the load of the comforter H acting on the vertical portions of the flexible wires 7 and 8 is reduced. To do.

  A screw-type or bolt-type stopper 83 that restricts the rising of the swing member 90 is fixed to the locking tool 82. The stopper 83 protrudes obliquely downward from the lower surface of the engagement tool 82. The swing member 90 has a stopper abutting plate 84 at a position facing the lower end of the stopper 83. The abutting plate 84 is made of an elastically deformable cushioning material such as rubber or elastomer. A plate-like stopper 88 that restricts the lowering of the swinging member 90 is provided at the lower end of the support 81. A swing member abutting plate 87 that is opposed to the lower surface of the swing member 90 is fixed to the upper surface of the stopper 88. The abutting plate 87 is also made of a resiliently deformable cushioning material such as elastically deformable rubber or elastomer.

  The swing member 90 is formed of a metal tube having a rectangular cross section having openings 93 and 98 on the lower surface of the distal end portion and the distal end surface. A horizontal support shaft 92 of the pulley 100 is fixed to the tip of the swing member 90. The flexible wires 7 and 8 extend from the proximal end opening 95 (or opening 98) of the swing member 90 to the hollow portion of the swing member 90, and turn downward through the circumferential groove of the pulley 100. It hangs down from the opening 93.

  FIG. 25A shows the neutral position (horizontal position) of the swing member 90. When the flexible wires 7 and 8 are wound around the drive roller 3 by the rotation of the drive roller 3, the flexible wires 7 and 8 raise the comforter H. As shown by the broken line arrow E in FIG. 25 (B), the tension due to the load of the comforter H acts on the flexible wires 7 and 8. The tension of the flexible wires 7 and 8 acts to rotate the swing member 90 downward. The swinging member 90 is rotated downward by the extension of the spring 85 and abuts against the abutting plate 87 and stops. This state is shown in FIG.

  When the flexible wires 7 and 8 are drawn from the drive roller 3 by the rotation of the drive roller 3, the flexible wires 7 and 8 lower the comforter H. While the tension of the comforter H is applied to the flexible wires 7 and 8, the flexible wires 7 and 8 maintain a tension state, but the comforter H is lowered to the bed B and the load of the comforter H is reduced. Then, the tension | tensile_strength of the flexible wire 7 and 8 lose | disappears rapidly. Although the lowermost position of the comforter H is controlled by the rotation amount detection device 60 (FIG. 23A and FIG. 23D), the flexible wire rods 7 and 8 are subjected to a sudden loss of tension. There is a tendency for 7, 8 slack or slack. This is not desirable because if the flexible wires 7 and 8 are loosened or loosened, a situation may occur in which the flexible wires 7 and 8 are entangled in a gap between the members. However, according to this embodiment, the swinging member 90 released from the tension of the flexible wires 7 and 8 is rotated upward by the elastic restoring force of the spring 85 as shown in FIG. Since the portions of the flexible wires 7 and 8 that hang down from the moving member 90 are pulled upward, the looseness or slack of the flexible wires 7 and 8 is eliminated.

  26 is a plan view showing the overall configuration of the bedding lifting apparatus according to the fourth embodiment of the present invention, and FIGS. 27 and 28 are cross-sectional views showing the overall configuration of the bedding lifting apparatus shown in FIG. 29 is a plan view, a cross-sectional view taken along the line IX-IX, a cross-sectional view taken along the line XX, and a cross-sectional view taken along the line XI-XI, showing the configuration of the lifting unit 50 shown in FIGS. In each figure, the same reference numerals are assigned to substantially the same constituent elements or constituent members as those of the respective embodiments described above.

  The bedding raising / lowering apparatus 1 of this example has the raising / lowering unit 50 arrange | positioned in the upper area of the bed B like the above-mentioned each Example. The elevating unit 50 has a rectangular frame for suspending the driving roller 3 in the width direction of the bedding, as in the third embodiment. The rectangular frame is a building beam or roofing material via a bracket J (shown by a broken line). Alternatively, it is supported by a building structural member G such as a ceiling material. Further, as the constant load applying device 70, a box type constant load spring unit incorporating an oil damper or the like is installed on the horizontal members 54 and 59, and the flexible wire 73 of the constant load spring unit is wound around the drive roller 3. It is hung. In this embodiment, the distance between the horizontal members 53 and 54 is set to a relatively small size, and the swing member 90 on the head side and the swing member 90 on the foot side are directed in directions opposite to each other. It has been. The other configuration of the bedding lifting apparatus 1 of this example is substantially the same as the configuration of the third embodiment described above.

  30 is a plan view showing the overall configuration of the bedding lifting apparatus 1 according to the fifth embodiment of the present invention, and FIGS. 31 and 32 are cross-sectional views showing the overall configuration of the bedding lifting apparatus 1 shown in FIG. is there. 33 is a plan view, a cross-sectional view taken along line XII-XII, and a cross-sectional view taken along line XIII-XIII showing the configuration of the lifting unit shown in FIGS. In each figure, the same reference numerals are assigned to substantially the same constituent elements or constituent members as those of the respective embodiments described above.

  The bedding lifting apparatus 1 of this example is supported by a building structural member G such as a beam of a building, a roofing material, or a ceiling material via a bracket J (shown by a broken line) as in the fourth embodiment. The configuration of the lifting unit 50 is similar to the lifting unit of the third embodiment. However, the lifting unit 50 does not include a rotation amount detection device, and has a configuration that detects the lowest and highest positions of the comforter H by the operation of the tension applying device 80.

  FIG. 34 is a plan view, a front view, and a right side view showing the configuration of the tension applying device 80, and FIGS. 35 and 36 are front views showing an operation mode of the tension applying device 80. FIG. 37 is a cross-sectional view showing the operation mode of the lifting device 50.

  As shown in FIG. 34, the tension applying device 80 has an operating rod 96 that protrudes horizontally from the side surface of the swinging member 90. A metal leaf spring 110 is disposed below the operating rod 96. A base end portion of the leaf spring 110 is fixed to a support bracket 57 supported by the frame of the elevating unit 50. The leaf spring 110 extends in a direction perpendicular to the operating rod 96.

  A detector 112 of the limit switch 111 is disposed below the free end of the leaf spring 110. The limit switch 111 is supported by the frame of the elevating unit 50 via a support bracket (not shown). In the neutral position (horizontal position) of the swing member 90 shown in FIG. 34, the detector 112 is slightly separated from the lower surface of the leaf spring 110. The limit switch 111 constitutes a descent position detecting unit that detects the lowest descent position of the comforter H by turning the swinging member 90 upward.

  The flexible wires 7 and 8 extend through the tip opening 98 of the swing member 90 into the swing member 90 and are turned downward by the pulley 100. A short tube 120 through which the flexible wires 7 and 8 pass is disposed below the pulley 100. The short tube 120 is fixed to the flat plate 121, and the upright plate 122 extends upward from the leading edge of the flat plate 121. The flat plate 121 is supported by the free end of the leaf spring 123. A base end portion of the leaf spring 123 is fixed to a support bracket 58 supported by the frame of the elevating unit 50. The short pipe 120, the flat plate 121, the upright plate 122, and the leaf spring 123 are engaged with the intermediate frame 30 provided at the distal end portions 7 a and 8 a of the flexible wires 7 and 8, and are raised and displaced elastically. Configure the detector.

  In the vicinity of the upright plate 122, a detector 126 of the limit switch 125 is disposed. The limit switch 125 is supported on the frame of the elevating unit 50 via the support bracket 59. In the neutral position (horizontal position) of the swing member 90 shown in FIG. 34, the upright plate 122 is in contact with the detector 126 and displaces the detector 126 to the ON position. The limit switch 125 constitutes a rising position detection unit that detects deformation or displacement of the rising position detectors 120 to 123.

  The limit switches 111 and 125 are connected to the control unit via the control signal line as in the above-described embodiment, and the control unit is connected to the AC power source, the driving unit of the driving roller 3 and the hand switch. The control unit detects the lifting operation of the lifting unit by the operation of the limit switches 111 and 125 and controls the operation of the driving roller 3. FIG. 35 shows a method of detecting the lowest descending position (lower limit) of the comforter H by the operation of the limit switch 111. FIG. 36 shows the highest rising position (upper limit) of the comforter H by the operation of the limit switch 125. A method of detecting is shown.

  In the neutral position (horizontal position) of the swinging member 90 shown in FIGS. 35A and 37A, the detector 112 is slightly separated from the lower surface of the leaf spring 110. When the comforter H is lowered, the swinging member 90 is rotated downward by the vertical load of the comforter H as shown in FIGS. 35 (B) and 37 (B). The operating rod 96 presses the leaf spring 110 downward, and the lower surface of the leaf spring 110 displaces the detector 112 downward. For this reason, the limit switch 111 is displaced to the ON position when the comforter H is lowered.

  When the comforter H descends from the raised position to the bed B, the vertical load of the comforter H is reduced, and the tension of the flexible wires 7 and 8 disappears rapidly. The swinging member 90 released from the tension of the flexible wires 7 and 8 is rotated upward by the elastic restoring force of the spring 85 as shown in FIGS. 35 (C) and 37 (C). The pressure of the actuating rod 96 is also released, and the leaf spring 110 is also separated from the detector 112 by its elastic restoring force. As a result, the limit switch 111 is displaced to the OFF position. The control unit detects the reach of the lowermost position (lower limit) of the comforter H by the change of the signal of the limit switch 111 (OFF operation).

  When the comforter H rises from the bed B, when the comforter H reaches the highest position, the linear member 31 of the intermediate frame 30 collides with the short tube 120 as shown in FIG. The leaf spring 123 is deformed by the rising pressure of the linear member 31. As a result, the upright plate 122 is separated from the detector 124, and the detector 124 is displaced to the OFF position. The control unit detects the reach of the uppermost position (upper limit) of the comforter H by a change in the signal of the limit switch 125 (OFF operation).

  Thus, according to the lift position detecting means of the present embodiment using the structure and operation of the tension applying device 80, the lift position detecting means using the weight member and the limit switch, the spiral groove, the driven pin, and the limit switch. Unlike the above-described lift position detection means using the above-mentioned method, there is no need for fine adjustment or adjustment of the position and sensitivity of the limit switch, fine adjustment of the length of the flexible wire, and the like, which is extremely advantageous in practice. In addition, since the other structure of this embodiment is substantially the same as the structure of the third embodiment or the fourth embodiment described above, the redundant description is omitted. Omitted.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-described embodiments, and various modifications or changes can be made within the scope of the present invention described in the claims. Is possible.

  For example, in the first embodiment, a pair of drive rollers including an electric motor, a speed reducer, and an electromagnetic brake can be arranged in parallel on the gantry, or an electric motor with a brake and power for driving the left and right rollers. It is also possible to install the transmission mechanism on the gantry.

  In addition, portable means such as casters may be provided in the lower part of the gantry, or the gantry or the frame itself may be suspended so as to be movable from the structure of the building.

  Further, a non-contact type position detector, an encoder, or the like may be employed as the raising / lowering position detecting means, and a wireless remote control type operation device or the like may be employed as a hand switch.

  The present invention is applied to a bedding raising / lowering device for raising and lowering an upper bedding such as a comforter and an upper blanket. According to the bedding lifting apparatus of the present invention, while reducing or eliminating the load of the bedding acting on the user himself / herself on the bed, the posture, movement, movement or behavior of the person himself / herself, the doctor, the nurse, etc. on the bed The top bedding can be raised to a state or position that does not restrict or interfere with the range.

DESCRIPTION OF SYMBOLS 1 Bedding raising / lowering device 2 Elevating drive part 3 Drive roller 4 Free rollers 7, 8, 9 Flexible wire 10 Base frame 20 Weight 30 Intermediate frame 50 Lifting unit 60 Rotation amount detection device 70 Constant load application device 80 Tension application device 90 Member 100 Pulley B Bed H Quilt (upper bedding)

Claims (8)

  In the bedding lifting device for raising and lowering the upper bedding, such as a comforter and an upper blanket, a flexible wire that is moored at least at the four corners of the upper bedding and suspends the bedding, and a hoisting device that winds or feeds each wire. Support means for supporting the hoisting device in the upper region of the bedding, and a tension applying device (80) for applying tension to the flexible wire so as to prevent the flexible wire from being loosened or loosened. A bedding lifting device.   The tension applying device (80) includes a swinging member (90) that pulls a vertical portion of the flexible wire to which a load of an overlaid bedding acts and applies tension to the vertical portion. Item 2. The bedding lifting apparatus according to item 1.   The tension applying device (80) biases the swinging member (90) upward, and rotates the swinging member upward when the load acting on the vertical portion of the flexible wire is reduced. The bedding according to claim 2, further comprising: a biasing means (85) and a descent position detecting means (111) for detecting a lowest descent position of the upper bedding by turning the swinging member upward. lift device.   The tension applying device (80) is a raised position detector (120) that is elastically deformed or displaced by engaging with an engaging means provided at a lower end (7a, 8a) of a vertical portion of the flexible wire. -123) and a rising position detecting means (125) for detecting deformation or displacement of the detection tool, the bedding lifting apparatus according to any one of claims 1 to 3.   The hoisting device is configured to cancel the load applied to the rotation driving roller by the rotation driving roller on which the flexible wire is wound and rotating about a substantially horizontal rotation axis, and the weight of the upper bedding. 5. A load applying device that reduces a load on the rotation driving roller by applying a load corresponding to a weight of the bedding to the rotation driving roller. 6. Bedding lifting device.   The load applying device (70) includes a constant load spring (71), and a load applying flexible member having one end connected to the outer end of the constant load spring and the other end wound around the drive roller. The bedding lifting apparatus according to claim 4, wherein the constant load spring always applies a substantially constant tension to the flexible wire for applying a load.   A spiral groove (62) formed on the outer peripheral surface of the drive roller, a movable member (63) having a driven pin (64) extending into the spiral groove, and a position detection means for detecting the position of the movable member The bedding lifting apparatus according to claim 1 or 2, further comprising: (65) and a control device (U) that regulates rotation of the rotation driving roller based on a detection result of the position detection means.   The bedding lifting apparatus according to any one of claims 1 to 7, wherein the driving roller has a structure in which a motor, a speed reducer, and an electromagnetic brake are built in the roller.

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