JPS60232156A - Extensible support apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a telescoping support device that can be suitably used as a support for an operating table or a treatment table, for example.

←) Conventional technology Medical tables For example, operating tables are constructed so that the height of a patient on the mount table can be adjusted by expanding and contracting the support columns, allowing for smooth and proper surgery. There are various problems with telescoping mechanisms.

That is, in the related art, the expansion and contraction of the column 0 of the operating table is mainly performed by a piston cylinder mechanism, but this has the disadvantage of being expensive because it needs to be driven by hydraulic pressure and requires precision in machining. Also, if this mechanism is made into multiple stages, the expansion and contraction strokes will be diverse, but the hydraulic circuit will become complicated.
The overall configuration becomes complex and multi-limbed.

Furthermore, other extension mechanisms such as the bank graph method and the tilting arm method have been adopted, but the former has a complicated structure and takes up a lot of space, and the latter has drawbacks such as the inability to vertically raise and lower the mounting platform. have.

(/)Objective The present invention aims to provide a prop device which has a simplified structure and which can eliminate the above-mentioned conventional drawbacks.

Structure: The telescoping strut device of the present invention is characterized by the way it expands and contracts.
A tube structure is created by inserting and combining three or more tube bodies into each other, and a strip connection is made between the two tubes sandwiching the intermediate tube body of the tube structure, and this strip is wound around the pulley of the intermediate tube body. By displacing this intermediate cylindrical body using an actuator or the like, the adjacent cylindrical bodies are doubled in displacement, allowing the entire cylindrical structure to expand and contract greatly.

←) Example The illustrated example will be explained below. FIG. 1 is a diagram showing the principle of the present invention, and numerals 1 to 4 are cylinders having different cross-sectional sizes, which are inserted and combined with each other to form a cylinder structure that forms the main body of the support section. The cylindrical body 1 has the largest cross section (maximum diameter in the case of a cylinder) and is fixed to a base BIC corresponding to the base of the operating table,
A mounting stand (not shown in FIG. 1) is installed above the uppermost cylindrical body 4.

5.6 is a pulley installed at the lower end and upper end of the cylinder 1 so as to be rotatable; 7.8 is a pulley similarly installed at the cylinder 2; and 9 and 10 are pulleys installed at the cylinder 3. It is a pulley.

11.12 and 13 are endless chains wound around pulleys 5, 6.7, 8, and 9 and 10, and a portion of each is connected to the lower ends of cylinders 2.3 and 4, respectively. . Further, the other parts of the endless chains 12 and 13 are connected to the upper ends of the cylinders 1 and 2. Therefore, when any one of the pulleys 5 to 10 is fixed so as not to rotate, each endless chain 11 .12
．． 13, cylinder 2 is connected to cylinder 1, and cylinder 3 is connected to cylinder 2.
The cylindrical body 4 is suspended from the cylindrical body 3 and supports the load above the cylindrical body 4.

Reference numeral 14 denotes an electric motor that rotationally drives the pulley 6;
When the pulley 6 is rotated, the endless chain 11 is wound, and the cylindrical body 2 instantaneously connected to the cylindrical body 1t on the base side is displaced upward or downward. Suppose that it is now displaced upward by a distance #L.

Due to the upward displacement of the cylindrical body 2, the endless chain 12 is also
The cylinder 3 is thus displaced upwardly by a distance of $2L.

Furthermore, due to the upward displacement of the cylinder 3, the dress chain 1
3 is also wound by L, and the cylinder body 4 is displaced upward by a distance of 3L. Conversely, the cylinder 2 is displaced a distance downward from the raised state (
(downward), the upper cylindrical body 4 is displaced downward by a distance of 3L.

As described above, in the support device according to the present invention, when the cylinder adjacent to the base side (fixed) cylinder is displaced in the axial direction of the cylinder structure, the cylinder on the other side doubles or triples. The additional displacement is obtained by .

In addition, in FIG. 1, each chain 11, 12, 13 is an endless chain, which is wound around two pulleys installed on each of the cylinders 1 to 4, and the cylinder 4 is used as a base. A load is applied from the side of the cylinder 1, that is,
The chain can be used in any load direction, but if the load direction is limited to only one direction, each chain may be of an end type and wound around the upper pulley 6.8.10. . Furthermore, the variable drive mechanism for the cylinders adjacent to the base side cylinder 1 is not limited to the system using an electric motor as shown in the illustration, but a yyinda mechanism or the like can also be adopted.

FIGS. 2 and 3 show the configuration when the present invention is implemented as an operating table IC.

Fig. 2 is a longitudinal cross-sectional view of the operating table (a cross-sectional view showing only the support pillars), and Fig. 3 is a cross-sectional view of the support pillars of the operating table, and these drawings are the same as Fig. 1. Components indicated by reference numerals are the same components or have the same functions as those in FIG. 1, and the details thereof will be omitted.

The cylindrical body 1 on the base side is fixed to a base B corresponding to the base,
Furthermore, a hydraulic V cylinder 15 is fixed to the inside of this cylinder 1. Although a mechanism for supplying and discharging pressure oil to the hydraulic cylinder 15 is not shown, for example, as a single-acting cylinder system, one pressure oil supply and discharge pipe is connected below the cylinder.

The piston rod 16 extends upward due to the supply of pressure oil, and the tip of this rod 16 is connected to the intermediate cylindrical body 2 via a connector 17. Therefore, the cylinder body 2 is displaced upward due to the extension of the piston rod 16.

Above the cylindrical body 4 on the upper end side, a mounting stand T is connected via a connector O.
has been erected. This connector C has an electric motor or the like installed therein for tilting or rolling the mounting table T.

Further, the unit DIc installed on the base B houses a pressure oil generation unit and a power supply unit. M is a cover.

Furthermore, FIGS. 2 and 3 t show a more specific configuration of the operating table, that is, a guide mechanism for guiding the insertion of the cylindrical bodies 1 to 4 into each other.

This guide mechanism is installed at three locations on three sides of the rectangular cylinder, and allows the cylinder structure as a whole to move (expand and contract) only in the axial direction. That is, four rollers R are rotatably attached to one cylindrical body at regular intervals, and V-A/L is attached to the other cylindrical body, and the rollers R are attached to this roller.
It is shaped like an L. Of course, the guide mechanism between the cylinders is not limited to the illustrated example.

The present invention includes various modified embodiments other than those illustrated above. For example, although the illustrated example shows four cylinders, the number may be five or six, or the minimum number may be three. Further, the cross-sectional shape of the cylinder may be not only rectangular but also circular. Further, this prop device can be used not only as a medical table such as an operating table or a treatment table, but also as a prop device for supporting and lifting other loads, or as a prop device for suspending objects from the ceiling.

(F) Effects The telescoping support device of the present invention has a simple structure, is inexpensive, has a large telescoping stroke, and has a small floor area and can be vertically moved up and down, making it suitable for operating tables, treatment tables, and the like.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the principle of the present invention, Figures 2 and 3 are diagrams showing an example in which the present invention is applied to an operating table, Figure 2 is a longitudinal cross-sectional view, and Figure 3 is a cross-sectional view. be. 1-4...Cylinder, 5-10...Pulley, 11-13.
...Engineer chain, 14...Electric motor, 15...
・Hydraulic cylinder, 16... Piston rod, 17... Connector, B... Base, C... Connection tool, T... Mounting stand, D... Units), R... Roller , L-...Rail, M...Cover. Nrano b8 Figure 3

Claims (1)

[Claims] A cylindrical structure formed by inserting and combining three or more cylindrical bodies whose frame-shaped cross-sectional sizes are sequentially arranged, and -1 a cylindrical structure in which an intermediate cylindrical body in this cylindrical structure is connected between the two cylindrical bodies sandwiching the intermediate cylindrical body, and the intermediate cylinder A strip wound around a pulley rotatably installed on the body, and a cylinder on the inside or outside of the cylinder structure as the base side, and the cylinder adjacent to this are reciprocated in the axial direction of the cylinder structure. It is characterized in that when an adjacent cylinder is displaced with respect to the base side cylinder t, the other side cylinder undergoes additional displacement and the entire cylinder structure expands and contracts. Telescopic strut device.