JP3988283B2 - Bed equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bed apparatus, and more particularly to a bed apparatus in which a backrest portion and a knee bending portion are raised and raised, respectively.
[0002]
[Prior art]
A conventional bed apparatus of this type, for example, Japanese Patent Application Laid-Open No. 10-507389, discloses a bed apparatus in which a backrest portion and a knee bending portion are raised and raised, respectively.
[0003]
[Problems to be solved by the invention]
However, in the conventional bed apparatus, the standing of the backrest part and the raising of the knee bending part are performed using independent drive sources, respectively, resulting in a complicated structure and high cost of the entire apparatus.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the technical means taken in claim 1 includes a waist support portion located at a central portion, pivotally supported at one longitudinal end portion of the waist support portion, and the waist support when not operating. A floor board provided with a backrest part that is substantially flush with the waist part and a pair of knee bent parts that are pivotally supported at the other longitudinal end part of the waist support part and are substantially flush with the waist support part when not in operation. Part: a frame part for holding the floor plate part: a moving body mounted on the lower side of the frame part and extending in the longitudinal direction, and moving the moving body at a reference position along the longitudinal direction of the frame part Drive means, a first mechanism interposed between the movable body and one side and the backrest portion, and a second mechanism interposed between the other side of the movable body and the knee bending portion. When the moving body moves to one side from the reference position The first mechanism and the second mechanism respectively raise the backrest portion and form the V-shaped pair of plates with respect to the floor surface. When the movable body moves from the reference position to the other side, the second mechanism Is a bed device comprising a drive mechanism that allows the pair of plates to stand upright while being held flat.
[0005]
[Action and effect]
In the above-described configuration, the driving means simultaneously operates both the first mechanism and the second mechanism via the moving body, so that the backrest part can be raised and the knee bending part can be raised by a common means. .
[0006]
【Example】
Embodiments of the present invention will be described with reference to the accompanying drawings.
[0007]
In FIG. 1, the bed apparatus 10 includes a floor plate portion 12. Thus, the floor board portion 12 is located at the center and fixed to the frame portion 22, the back support portion 14, the backrest portion 16 hinged to the right end portion of the waist support portion 14, and the left end portion of the waist support portion 14. It is comprised from the knee bending part 18 hingedly engaged with. The waist support part 14, the backrest part 16 and the knee bending part 18 are arranged so as to be flush with each other, and the knee bending part 18 is composed of a pair of plates 20 hinged to each other. .
[0008]
A drive mechanism 30 that is detachably mounted on the frame portion 22 is disposed below the floor plate portion 12. Thus, the drive mechanism 30 includes a moving body 32, a motor 34 as a driving means for linearly reciprocating the moving body 30 in the longitudinal direction, a first mechanism 40 interposed between the moving body 32 and the backrest portion 16, and movement. The second mechanism 60 is interposed between the body 32 and the plate 20.
[0009]
The first mechanism 40 includes a lever 42. An upper end portion of the lever 42 is hingedly engaged with the backrest portion 16, and a roller 44 is rotatably mounted on the lower end portion of the lever 42. The roller 44 is slidably mounted in the groove 33 of the moving body 32. The groove 33 includes a right end wall 33a and a left end wall 33b. When the first mechanism 40 is in the non-operating position, the roller 44 is adjacent to the left end wall 33b as shown in FIG. .
[0010]
The second mechanism 60 includes a first lever 62 and a second lever 64. The upper end of the first lever 62 (second lever 64) is hingedly engaged with the right plate 20 (left plate 20), and the first lever 62 (second lever 64) has a first end on the lower end thereof. A roller 66 (second roller 68) is rotatably mounted. Thus, the first roller 66 (second roller 68) is slidably mounted in the first groove 35 (second groove 37) of the moving body 32. The first groove 35 and the second groove 37 are parallel to each other when viewed in a plan view. The first groove 35 includes a right end wall 35a and a left end wall 35b, and the second groove 37 also includes a right end wall 37a and a left end wall 37b. When the first mechanism 60 is in the non-operating position, as shown in FIG. 1, the first roller 66 (second roller 68) is adjacent to the left end wall 35b (left end wall 37b).
[0011]
In the state shown in FIG. 1, when the motor 34 is driven in one direction and the moving body 32 is shifted in the right direction, the first mechanism 40 is activated and the backrest portion 16 is erected as shown in FIG. 2. . That is, the roller 44 at the lower end portion of the lever 42 is urged to the right by the left end portion 33b of the groove 33 that moves integrally with the moving body 32, and the lever 42 is rotated counterclockwise. As shown, the backrest 16 is raised. On the other hand, the roller 66 at the lower end of the lever 62 of the second mechanism 60 is urged to the right by the left end 35b of the groove 35 that moves integrally with the moving body 32 and rotates the lever 62 counterclockwise. Let me. As a result, the right plate 20 is turned up in the clockwise direction. Since the right plate 20 is hinge-engaged with the left plate 20, as the right plate 20 rotates in the clockwise direction, both plates 20 are inverted V-shaped so as to form an acute angle. Form. Since this inverted V-shape forms a mountain shape, the knee can be bent easily.
[0012]
On the contrary, in the state shown in FIG. 1, when the motor 34 is driven in the other direction and the moving body 32 is shifted leftward, a sufficient clearance is set between the roller 44 and the end portion 33a. As shown in FIG. 2, only the moving body 32 is shifted leftward with respect to the roller 44 at the lower end of the stationary lever 42. Therefore, the first mechanism 40 does not operate, and the lever 42 maintains the same state as in FIG. On the other hand, the roller 66 at the lower end of the lever 62 of the second mechanism 60 is urged to the right by the right end 35a of the groove 37 that is integrally moved with the moving body 32, and rotates the lever 64 in the clockwise direction. . As a result, the left plate 20 is rotated upward in the clockwise direction. Since the left plate 20 is hinge-engaged with the right plate 20 supported by the lever 62, both the plates 20 are kept flush with the clockwise rotation of the left plate 20. In such a state, it rotates and rises counterclockwise. At this time, the right plate 20 is not positively biased by sufficiently setting the clearance between the roller 66 and the end portion 35a. Thus, you can take an easy posture without bending your knees.
[0013]
Note that the above-described drive mechanism, that is, 30 can be retrofitted to the frame portion 22 as a unit.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a bed apparatus according to the present invention.
FIG. 2 is an operation explanatory diagram when the backrest portion and the knee bending portion of the device shown in FIG. 1 are raised.
3 is an operation explanatory diagram when only the knee bending portion of the apparatus shown in FIG. 1 is raised. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Bed apparatus 12 Floor board part 14 Waist part support part 16 Backrest part 18 Knee bending part 20 Plate 22 Frame part 30 Drive mechanism 32 Moving body 33 Groove 34 Motor (drive means)
35 groove 40 first mechanism 42 lever 60 second mechanism 62 first lever 64 second lever

Claims (2)

A waist support portion located in the center, a backrest portion pivotally supported by one longitudinal end portion of the waist support portion and substantially flush with the waist support portion when not in operation, and the other end in the longitudinal direction of the waist support portion A floor plate portion having a pair of knee bent portions that are pivotally supported by the portion and are substantially flush with the waist support portion when not in operation: a frame portion that holds the floor plate portion: and a lower portion of the frame portion. A movable body that is mounted and extends in the longitudinal direction, a driving unit that moves the movable body at the reference position along the longitudinal direction of the frame portion, and an intervening member between the movable body and one side and the backrest portion. And a second mechanism interposed between the other side of the movable body and the knee bending portion, and the first mechanism and the second mechanism when the movable body moves to the one side from the reference position. 2 mechanisms each stand up the backrest and the pair of The second mechanism causes the pair of plates to stand upright while holding the plane when the movable body moves from the reference position to the other side. The bed equipment. The bed apparatus according to claim 1, wherein the drive mechanism is unitized so as to be detachable from the frame portion.

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