JPH0140513Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a drive device for raising and lowering a floor part of a bed, a patient carrier, an examination table, etc., which can display the amount of elevation of the floor part.

(Prior art and its problems) For example, in a bed, a desired part of a floor divided into multiple parts can be raised and lowered by rotation, or a floor support frame that supports the floor can be raised and lowered horizontally. Or,
A crank handle is widely used as a driving device for raising and lowering a floor such as tilting it. Conventionally, when the crank handle is used to raise and lower the floor, the operator must directly look at the floor between operations to check the amount of elevation, making the operation relatively cumbersome.

The purpose of this invention is to solve this problem, and the amount of elevation of the floor can be confirmed by looking at the display provided on the drive device itself while operating the crank handle, without looking directly at the floor. It was made possible to do so.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the floor lifting drive device of the present invention has a female threaded portion provided on one side of the actuating member that is screwed into a threaded shaft connected to the crank handle. At the same time, a display section is formed by rewinding a display strip around the crank handle of an outer cylinder member that covers a part of the actuating member and the screw shaft, and One end is fixed to the actuating member.

(Function) The drive device for raising and lowering a floor according to the present invention moves the female threaded portion along the screw shaft by rotating the screw shaft with the crank handle, thereby moving the operating member forward according to the direction of rotation of the crank handle. Alternatively, by moving it backward, the floor section is driven to move up and down.

When the actuating member moves forward, the display strip advances with it and is gradually unwound from the display section, and when it retreats, it is rewound and the display changes, so that by looking at this display, the display strip moves forward. Therefore, the amount of movement of the actuating member and the amount of elevation of the floor can be known.

(Example) Next, embodiments of the present invention will be described.

In FIG. 1, reference numeral 1 designates a bed with a floor 2 that can be raised and lowered. Also, Figure 2,
Figure 3 shows the lifting device of the present invention.
This is done by screwing together a female threaded portion 6 provided on one side of the operating member 5 with a threaded shaft 4 connected to the crank handle 3, and at the same time, the outer cylindrical member 14, which covers a part of the operating member 5 and the threaded shaft 4, A display section 8 is constructed by winding a display strip 9 in the vicinity of the crank handle 3 so that the display strip 9 can be unwound freely.
One end of the actuating member 5 is fixed to the actuating member 5. The display strip 9 is provided with an appropriate display 10, such as a scale, numbers, symbols, colors, etc., corresponding to the amount of elevation of the floor 2. The display strip 9 may be any appropriate strip such as a steel strip or a resin strip, and any method of winding it may be used as long as it can be unwound. For example, although not shown, the other end of the display strip 9 is connected to a mainspring attached to a case, similar to the automatic rewinding mechanism of the blade in a tape measure, and the display strip 9 is connected from the case to a mainspring. A structure in which a mainspring is wound when the strip 9 is pulled out, a structure in which a drum or the like around which the display strip 9 is wound is urged in the rotational direction by the spring or the like, and a prestress is applied to the rigid band. It is appropriate to use a configuration in which a rigid band of a constant torque spring that is curved into a spiral shape is used as a display band-like body. The display strip 9 described above is formed integrally with the outer cylinder member 14 or is wrapped in a case 11 attached to the outer cylinder member 14, and the case 11 has a display window 12 formed therein. A magnifying lens 13 is attached to the display window 12 to display the display 10.
It is also possible to enlarge the . It should be noted that the display strip 9 may be stretched by changing its direction appropriately via a guide wheel (not shown).

In the bed 1 shown in FIG. 1, the screw shaft 4 side such as the outer cylinder member 14 is tiltably supported on the floor support frame 2', and the other side of the actuating member 5 is supported on the floor support frame 2'.
It is connected to a push-up link 7 protruding from the lower side of the floor portion 2, that is, the back floor plate in the figure, to constitute a lifting mechanism for the back floor plate. In addition, a link mechanism that converts the movement of the actuating member 5 into raising and lowering the floor 2 may be used as appropriate, and although the above-mentioned embodiment has a structure in which the floor 2 is raised and lowered by rotation, other well-known methods may be used. The raising and lowering of the floor 2 may be carried out in any suitable manner, such as raising and lowering the floor 2 parallel to the bed at the same time as the floor support frame 2', or raising and lowering only one side and making it incline.

2 and 3, when the screw shaft 4 is rotated by the crank handle 3 and the actuating member 5 moves forward, one end of the display strip 9 moves forward with it, so that the display device 8 gradually moves forward. It is brought out from. The display 10 of the display strip 9 through the display window 12 shifts in accordance with the length of the display strip 9 being unrolled. Further, when the screw shaft 4 is reversed and the actuating member 5 is retreated, the display strip 9 is moved to the display device 8.
The screen is rewound and the display 10 moves in the opposite direction.

In this way, the person displaying the information, such as a nurse or an attendant, can indirectly determine the amount of elevation of the floor 2 by looking at the display 10 on the display strip 9 while operating the other levers on the crank handle 3. That is, since the current position of the floor section 2 can be confirmed, there is no need to directly look at the floor section 2 between operations to confirm the amount of elevation, unlike in the past, and the operation is not cumbersome. In addition, as described above, in the present invention, the display unit 8 is integrated with the drive device from the crank handle 3 to the operating member 5, and is configured independently of the elevating mechanism unique to each bed. The present invention can be easily applied to other beds with different elevating mechanisms and elevating forms.

(Effects of the invention) As described above, in the present invention, the display section in which the display strip is rewindably wound is integrated with a screw shaft type drive device, so that the drive device can be used as a component to install an appropriate bed. By incorporating it into the elevator mechanism, the display strip in the display section can display a display corresponding to the amount of elevation of the floor, allowing operators such as nurses and attendants to use the crank handle etc. By looking at the vicinity of the floor while operating it, it is possible to indirectly check the amount of elevation of the floor, that is, the current position of the floor, which has the effect of making it possible to raise and lower the floor without any hassle. .

[Brief explanation of the drawing]

Figures 1 to 3 correspond to embodiments of the present invention. Figure 1 is an explanatory side view showing an example of a bed lifting mechanism to which the present invention is applied, and Figure 2 is an explanatory perspective view of the main parts. Figures 3a and 3b are explanatory sectional views of main parts, respectively.
It is an enlarged perspective view. Symbols 1... Bed, 2... Floor, 2'... Floor support frame, 3... Crank handle, 4... Threaded shaft, 5... Operating member, 6... Female threaded portion, 7...
Push-up link, 8...Display device, 9...Display strip, 10...Display, 11...Case, 12...Display window, 13...Enlargement lens, 14...Outer cylinder member.

Claims (1)

[Scope of utility model registration request] A female thread provided on one side of the actuating member is screwed into a screw shaft connected to the crank handle, and a display strip is placed near the crank handle on an outer cylindrical member that covers a part of the actuating member and the screw shaft. 1. A drive device for raising and lowering a floor part of a bed, comprising a display part which is wound so as to be able to be unwound, and one end of the display band-shaped body is fixed to the actuating member.