JPS5810583Y2 - Drive mechanism for raising and lowering the floor in a supine table - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drive mechanism for raising and lowering the floor of a supine bed such as a bed, a medical examination bed, or a patient carrier.

An example of a supine table is a bed on which a patient or the like lies on their back, such as one in which the floor is divided into a plurality of parts, and the desired floor part is raised and lowered by rotating in an appropriate direction;
The floor support frame that supports the floor may be raised or lowered to raise or lower the entire floor while maintaining its level, or only one side of the head or foot side of the floor support frame may be raised or lowered. There are some that are configured to be tilted and others that are configured by a combination of these.

In such a bed, the floor is raised and lowered by applying direct displacement to an operating member in a lifting mechanism constructed below the floor and converting this displacement.

The present invention provides a novel drive mechanism for applying displacement to such actuating members.

The present invention will be described in detail below based on examples.

Reference numeral 1 denotes a male threaded rod, and the male threaded rod 1 is rotatably installed in a support cylinder 2, and a female threaded member 3 screwed onto the male threaded rod 1 is moved along the support cylinder 2 by rotation of the male threaded rod 1. It can be moved freely.

The configuration for moving the male threaded member 3 is such that the cross-sectional shape of the support cylinder 2 and the female threaded member 3 is square, hexagonal, elliptical, round, etc., as shown in FIGS. 3a, b, c, and d. In addition to having a circular structure, a projection 4 is formed on the female screw member 3 and a long hole 5 for fitting the projection 4 is formed in the longitudinal direction of the support cylinder 2 even if it is formed in a circular shape, as shown in FIG. 3e. It may also be used as a configuration.

A wire IJ-6 is provided on one side of the support tube 2, and a wire 7 that is wound around the pulley 6 and changed in direction to form two wires a and b is slidably supported along the support tube 2. do.

Although the pulley 6 is built in one side of the support tube 2 in the figure, it may be provided outside the support tube 2 depending on the case.

Further, the two wires 7 may also be supported slidably along the outside of the support tube 2.

Here, one side a of the two threads a and b of the wire 7 is fixed to the female thread member 3.

The fixing method is free.

However, the elevating drive mechanism configured as described above is installed on the floor 8.
In the lifting mechanism of 2.a.

The wire 7 of b is installed in the direction of displacement of the actuating member 9 that converts the applied displacement into elevation of the floor, and two wires a,
One side of b is fixed to the actuating member 9.

The wire 7 may be configured to be endless in advance, or may be configured to be endless by being fixed to the actuating member 9.

Here, a specific example of the elevating mechanism for the floor section 8 will be described. First, FIG.
, . . . and rotatably fix the end of the desired outer floor 8' to be raised and lowered to the floor support frame 10,
An operating rod 11 is provided below the outer floor 8', and an operating member 9 is provided protruding from the operating rod 11, and the operating member 9 is displaced to push up the operating rod 11 to open the outer floor 8'. Rotate the
This is an example of a bed in which the floor portion 8 is raised and lowered.

In addition, FIG.
2, 12' are provided, and rotating arms 13, 13' are provided protruding from both sides of the rotating rods 12, 12'.
13' is connected to a supporting arm 15, 15' provided on the base 14, and the operating members 9, 9 are connected to the rotating rods 12, 12'.
By displacing the actuating members 9, 9/ to rotate the rotating arms 13, 13', the rotating rods 12, 1
2', thereby raising the floor support frame 10 in a parallel state, or tilting the floor support frame 10 by displacing only one of the actuating members 9, 9/. This is an example.

Needless to say, the structure of the supine table such as a bed, the raising and lowering form of the floor portion 8 thereof, and the structure of the raising and lowering mechanism thereof may be of any type other than those described above.

However, in such a mechanism for raising and lowering the floor section 8, two threads a,
The wire 7 b is installed in the direction of displacement of the actuating member 9, and the wire 7 a.

b is fixed to the actuating member 9, but the construction method may be a method using a pulley 16, or an outer wire 18 as shown in FIG.
A method using other guide members such as the above may also be used.

Note that when the pulley 16 is used, it is necessary to always apply tension to the wire 7, but when an outer wire is used, there is an advantage that this is not necessary.

The support tube 2 is fixed at an appropriate location on the supine table, and a rotational drive device such as a crank handle 17 or an electric motor (not shown) is connected to one side of the male threaded rod 1.

When the male threaded rod 1 is rotated by a rotation drive device such as the crank handle 17 and the female threaded member 3 is moved to the right in FIG. 2, the side a of the wire 7 fixed to the female threaded member 3 moves to the right. Therefore, in FIG. 4, the b side of the wire 7 pulls and displaces the actuating member 9 via the pulley 16, thereby making it possible to raise the floor 8.

At this time, the drive mechanism side on the b side of the wire 7 is pulled and displaced by the actuating member 9, but this displacement is caused by the second
In the figure, when the a side of the wire 7 moves to the right, the distance that the b side can move is equal to the distance that the wire 7 can move, so no mechanical inconvenience occurs, and therefore the floor 8 can be smoothly raised and lowered.

Contrary to the above, the floor portion 8 can be lowered by reversing the male threaded rod 1 in FIG. 2 and moving the female threaded member 3 to the left in the drawing.

In the configuration described above, the wire 7 pulls the actuating member 9 against the load via the pulley 16, but on the contrary, the wire 7 from the support tube 2 directly pulls the actuating member 9 against the load. Of course, it is also possible to pull it.

In the present invention, the floor section 8 is moved up and down by displacing the operating member 9 using the wire 7 as described above. ie, the actuating member 9 is restrained by the wire 7 in either direction of its displacement, unless the wire 7 is moved by rotating the male threaded rod 1 and moving the female threaded member 3. The floor section 8 cannot be raised or lowered by external force.

Therefore, in the lifting mechanism to which the drive mechanism of the present invention is applied, although the floor part 8 is raised and lowered by the flexible wire 7, it is highly stable and does not cause the floor part 8 to move due to unnecessary external force. It has the effect of preventing

Further, the drive mechanism of the present invention is connected to the actuating member 9 in the lifting mechanism of the floor 8 via the flexible wire 7, and the wire 7 is connected to the pulley 16 or the like as described above. Since the direction of the drive device such as the crank handle 17 can be easily changed by using the outer wire 18, etc., the drive device such as the crank handle 17 can be fixed at an appropriate location without being subject to any mechanical restrictions. In addition to the floor support frame 10, it may also be a base 14, or in some cases a footboard or a headboard. In particular, when the drive device for rotating the male threaded rod 1 is the crank handle 17, such a crank handle is used. 17 can be installed in a position where it is easiest for a person to operate it.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a perspective view illustrating the main part, Fig. 2 is a longitudinal sectional view illustrating the main part, and Fig. 3 a, b,
c, d, and e are explanatory cross-sectional views of the main parts, Figures 4a and b are explanatory perspective views of the drive mechanism of the present invention applied to rotating and raising and lowering the floor, and Figure 5 is a cross-sectional view of the present invention. FIG. 6 is an explanatory side sectional view showing a state in which the drive mechanism is applied to raising and lowering the floor, and FIG. 6 is an explanatory plan view showing an example of the mounting position of the drive device. Code 1...Male thread rod, 2...Support tube,
3...Female screw member, 4...Protrusion, 5...
...Mating slot, 6...Pulley, 7...
... wire, 8 ... floor section, 9 ...
- Operating member, 10... Floor support frame, 11...
...Operating rod, 12.12'...Rotating rod, 13
．． 13'... Rotating arm, 14... Base,
15, 15'...Support arm, 16...
Pulley, 17...Crank handle, 18.
...Outer wire.

Claims (1)

[Scope of utility model registration request] A male threaded rod is rotatably installed in a support cylinder, and a female threaded member screwed onto the male threaded rod is movable along the support cylinder by rotation of the male threaded rod, and is attached to one side of the support cylinder. A pulley is provided, and a wire that is wound around the pulley and changed direction to form two wires is slidably supported along the support tube, and one side of the wire is fixed to the female thread member, In the floor lifting mechanism, the two wires are installed in the displacement direction of an actuating member that converts applied displacement into raising and lowering the floor, and one side of the wires is fixed to the actuating member. A drive mechanism for raising and lowering a floor part of a supine table.