JPS6125458Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mechanism for raising and lowering the floorboards of a bed by raising and lowering a plurality of floorboards so that a user such as a patient can take a sitting position.

If only the back floorboard is raised to put the patient in a sitting position, the lumbar region will shift toward the feet, so
In order to prevent this, the lumbar floor plate may be raised in conjunction with the rise of the back floor plate.
However, since the rising height of the lumbar floor plate is lower than that of the back floor plate, if the lumbar floor plate is not raised sufficiently, the lumbar area is likely to shift due to the rise of the back floor plate.

This invention allows the back floor plate and the lumbar floor plate to rotate upward in conjunction with each other, thereby preventing the lumbar region from shifting when the back floor plate is rotated upward to take a sitting position, and also prevents the lower back from shifting when the back floor plate rotates upward. By rotating and lifting the lumbar floor plate in advance, the problem of the lumbar area being easily displaced at the beginning of the rotation and raising of the back floor plate is solved. The present invention will be described in detail below based on examples.

Reference numeral 1 denotes a floor plate support frame, and a back floor plate 2 and a waist floor plate 3 are provided on the floor plate support frame 1 so as to be rotatable in opposite directions with one end thereof as a fulcrum. As shown in the figure, no other floorboard may be provided between the back floorboard 2 and the waist floorboard 3, or the floorboard support frame 1
A structure may also be adopted in which a small floor plate is interposed in a fixed state. An actuating arm 4 is provided protruding from the back floor plate 2, and an actuating rod 5 is rotatably provided on the floor plate support frame 1 corresponding to the lumbar floor plate 3, and the tip of the actuating rod 5 is attached to the lumbar floor plate 3. An operating arm 6 and a driving arm 7 are provided in a protruding manner to be in contact with the lower side. Code 8 is operating rod 5
It is a tip roller. A common drive rod 9 is connected to the operating arm 4 of the back floor plate 2 and the drive arm 7. The driving rod 9 may be an appropriate telescopic rod using a threaded shaft, a hydraulic cylinder, or the like. Furthermore, code 1
0 is an idle groove for absorbing the inclination of the drive arm 9 during operation, but the idle mechanism may be any other suitable mechanism. Therefore, the present invention is characterized in that, in the above structure, a play mechanism A for delaying the operation is provided between the operating arm 6 and the drive rod 9 or between the operating arm 6 and the back floor plate 2. do. In the embodiment shown in FIG. 1, a longitudinal play groove 11 is provided at the tip of the drive rod 9, and a pin 12 at the tip of the actuating arm 6 is slidably fitted into the play groove 11. This is a configuration in which a play mechanism A is provided between the drive rod 9 and the drive rod 9. Further, in the embodiment shown in FIG. 2, the base end of the operating arm 6 is rotatably fixed to a support rod 13 provided on the back floor plate 2, and
Engaging protrusions 14, 14' are provided on the side and the operating arm 6 side, and after the operating arm 6 rotates a predetermined angle and the respective engaging protrusions 14, 14' engage, the operating arm 6 engages the back floor plate. In other words, a play mechanism A is provided between the operating arm 6 and the back floor plate 2. In addition, the play mechanism A may have any suitable structure as long as it delays the operation.

In this configuration, when the drive rod 9 is moved to the left in the drawing, the actuation arm 6 rotates clockwise via the drive arm 7 and the actuation rod 5, and the lumbar floor plate 3 rotates upward. In this case, until the drive rod 9 moves to a predetermined position, the operating arm 6 is not driven by the drive rod 9 by the play mechanism A, so the back floor plate 2 does not rotate upward. When the drive rod 9 reaches a predetermined position, the actuation arm 6 is driven by the drive rod 9, and the movement of the drive rod 9 to the left causes the back floor plate 2 to rotate upward, and at the same time The floorboard 3 also rotates upward.

In this way, the present invention rotates and raises the lumbar floor plate in conjunction with the rotation and rise of the back floor plate, which effectively prevents the lumbar region from shifting forward, that is, toward the feet, when the patient is in a sitting position. It is characterized by a good feeling of use. In particular, in the present invention, at the beginning of operation, the lumbar floor plate is rotated and raised before the back floor plate is rotated and raised, so it effectively solves the problem of the lumbar part slipping easily at the beginning of the rotation and rise of the back floor plate. It has the characteristic of being possible. Moreover, the present invention achieves the above-mentioned interlocking of the back floor plate and the lumbar floor plate with an extremely simple structure in which the drive arms and operating arms provided corresponding to each floor plate are operated by a common drive rod. The mechanism is downsized to make effective use of the space below the floorboard, and the weight of the bed can be reduced.

[Brief explanation of the drawing]

Figures 1 a, b, and c are longitudinal explanatory views showing the configuration and operation of one embodiment of the present invention, and Figures 2 a, b, and c are longitudinal explanatory views of main parts showing the configuration and operation of another embodiment. . Code, 1...Floor plate support frame, 2...Back floor plate, 3
...Waist floor plate, 4...Operating arm, 5...Operating rod, 6
... Operating arm, 7 ... Drive arm, 8 ... Tip roller, 9 ... Drive rod, 10, 11 ... Play groove, 12
...Pin, 13...Support rod, 14, 14'...Engagement protrusion, A...Play mechanism.

Claims (1)

[Scope of utility model registration request] A back floor plate and a lumbar floor plate are provided on a floor plate support frame so as to be rotatable in opposite directions with one end thereof as a fulcrum, an operating arm is provided protruding from the back floor plate, and the floor plate is supported in correspondence with the lumbar floor plate. An operating rod of the frame is rotatably provided, and an operating arm is protruded from the operating rod, the tip of which contacts the lower side of the waist floor plate,
A driving arm is provided protrudingly, and a common driving rod is connected to the driving arm of the back floor plate and the driving arm, and the driving arm is operable between the working arm and the working rod or between the working arm and the back floor plate. A floorboard undulating mechanism characterized by having a play mechanism for delay.