JPS6316262Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conduit for supporting, in a suspended state, an operation box for remote control of a control device, for example, in a main body housing an electric control device for controlling the operation of a machine tool.

This type of conduit is designed to (a) protect the control wire group, (b) support the weight of the control box on the main body rather than the wire group, and (c) provide the control box with an easy-to-operate structure. Its role is to provide a suitable degree of freedom of movement.

Conventionally, the above (c) freedom of movement has been emphasized. Therefore, the general form of conduit is as follows. A flexible tube is used for the conduit connecting the flange body for connection to the main body and the flange body for connection to the box. This flexible tube is made by winding a long thin metal strip in a spiral shape, and connecting adjacent strip sections in the pitch direction.
They are engaged in a state that ensures a certain degree of flexibility. In order to enhance the design, some are coated with braided soft vinyl chloride or thin metal wire (knitted into a cylindrical shape). These items have excellent flexibility,
Although the tensile strength is sufficient for the weight of the box, on the other hand, in order to ensure this property, the product cost is quite high due to the complicated structure and manufacturing, and the high-grade materials. . Traditional conduit is
As a result of various improvements made to the conduit section,
This is what happened as described above.

The present invention takes the position that there is still room for improvement in the flange body. That is, the purpose is to simplify the structure and reduce product cost while satisfying the requirements (a), (b), and (c) above by improving the structure of the flange body.

The gist of the electrical conduit for suspending a control operation box according to the present invention is that the conduit has a flange body for connection to the control operation box at the lower end, and a flange body for connection to the electrical control equipment is attached to the upper end of the conduit tube, and a universal joint is attached to the upper end of the conduit tube for connection to the control operation box. They are connected via the

That's the point.

In this book, the term "universal joint" is, of course, not for transmission purposes. The conduit can move in such a way that the lower flange body draws an arc around the connection part, and the direction of the movement is the radial direction when viewed from the vertical direction, and at least two intersecting directions (preferably orthogonal directions). 2 directions). Generally, the direction of movement is omnidirectional (there are no restrictions on direction).

Next, a preferred embodiment will be described based on the drawings.

The conduit 1 is a simple cylindrical rigid pipe such as a synthetic resin pipe or a metal pipe. A drum-shaped body 2 is screwed onto the upper end of the conduit 1 and fixed with a set screw 3. A cylindrical portion 5 of the upper flange body 4 is fitted onto the drum-shaped body 2. An annular receiver 6 is integrally provided at the lower end of the cylindrical portion 5 and projects inward, and the inner surface thereof is formed into a drum shape. Bolts 8, 8 screwed into screw holes 7, 7 at diametrically opposed positions in the cylindrical part 5 enter holes 10, 10, also at diametrically opposite positions in the cylindrical part 9 of the drum-shaped body 2. ing. These holes 10, 10 are blank holes (large clearance) for the bolts 8, 8. Hole 10,
The following actions (a) to (c) are achieved by the thrust engagement of the bolts 8, 8 with respect to the bolts 10. (a) Limiting the rotation angle of the conduit 1 relative to the upper flange body 4 around the vertical axis. Its rotation angle is sufficiently small. However, it is possible to make the rotation angle closer to 180 degrees by forming the holes 10, 10 horizontally. (b) Prevents the conduit 1 from being pulled out from the upper flange body 4 (upwards in the drawing) during the distribution stage, etc. In addition, when the annular receiver 6 is worn out due to long-term use and the receiving action of the drum-shaped body 2 is greatly reduced, the upper flange body 4
This prevents the conduit 1 and therefore the operation box from falling off. (c) Allow the conduit 1 to swing in all directions. However, the solid angle is small, and may be small for practical purposes. 11 is a flange portion of the flange body 4; 12 is a connecting bolt hole formed therein;
There are multiple in the circumferential direction. The fitting structure between the drum-shaped body 2 and the annular receiver 6 constitutes a universal joint, that is, a universal joint a. The flange body 13 connected to the lower end of the conduit 1 includes a large diameter cylinder 14 and a small diameter cylinder 1.
5. The flange 16 is the main element. Large diameter cylinder 14
is screwed onto the conduit 1 and fixed with a set screw 17. The outer periphery of the large-diameter cylinder 14 is knurled 18 . A circumferential groove 20 is formed in the flange 16 into which a roll pin 19 press-fitted into the lower end of the large diameter cylinder 14 is inserted. This circumferential groove 20
Spanning 360 degrees. With the pin 19 fitted in the circumferential groove 20 and the flange 16 in contact with the large diameter cylinder 14, the small diameter cylinder 15 is screwed onto the large diameter cylinder 14 and fixed by the insertion of the roll pin 21. Small diameter cylinder 15
holds the flange 16 with its stepped portion 22.
However, the flange 16 has both large and small diameter cylinders 14 and 15.
Rotate freely against. Screws 23, 23 for defining this rotation range θ are screwed onto the flange 16 and protrude into the circumferential groove 20. In other words, screw 2
When the roll pin 19 hits 3, rotation is prevented. Screw hole 24 for screw 23 in flange 16
There are three options, and the rotation range can be adjusted by selecting one of them. The number of screw holes 24 is arbitrary. Screw 2
When using one 3, it can rotate almost 360 degrees. When the screw 23 is not used, it can be continuously rotated at any angle. Incidentally, in such a case, neither the screw 23 nor the screw hole 24 is necessary. However, it is best to limit the angle to a certain value to prevent twisting of the inserted wire. 25 is a connecting bolt hole in the flange 16.

Figure 3 shows an example of the usage situation, where 26 is a conduit pipe, 27 is an electrical control equipment, 28 is a wire duct, 2
9 is an operation box.

Next, an application example will be explained.

The conduit 1 is generally a cylinder, but it may also be a square cylinder. The same applies to the flange bodies 4 and 13.

As the universal joint a, any arbitrary joint may be used as long as it allows the wire to pass through.

Each part is usually made of metal, but any or all of the parts may be made of synthetic resin.

The conduit 1 is not limited to a rigid tube.

The structure shown in the drawings is only an example. Various alternative configurations are possible for the details shown, but are omitted.

In short, according to the present invention, since a universal joint is used to connect the upper flange body to the conduit, the following effects can be obtained.

(a) Not only does it ensure a reasonable degree of freedom of movement for the operation box, but also (b) it allows the use of extremely simple structures such as single pipes, which are therefore inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway vertical cross-sectional view illustrating an embodiment of the electrical conduit according to the present invention, FIG. 2 is a cross-sectional view taken along the - line arrow in FIG. 1, and FIG. 3 is an example of use. FIG. DESCRIPTION OF SYMBOLS 1... Conduit pipe, 2... Drum-shaped body, 4... Upper flange body, 5... Cylindrical part, 6... Annular receiver, 13...
...lower flange body, a...universal joint.

Claims (1)

[Claims for Utility Model Registration] A conduit 1 having a flange body 13 for connection to a control operation box at the lower end is connected to a flange body 4 for connection to an electrical control device at the upper end via a universal joint a. Conduit for hanging the control operation box. The universal joint a includes a drum-shaped body 2 attached to the upper end of the conduit 1, and an annular receiver 6 integrally protruded toward the center side at the lower end of the cylindrical portion 5 of the upper flange body 4 so as to have a drum-shaped inner surface. An electrical conduit for suspending a control operation box according to claim 1, which is a utility model registered claim. The control operation box suspension according to claim 1, wherein the upper flange body 4 and the conduit 1 are prevented from rotating, and the lower flange body 13 is allowed to rotate with respect to the conduit 1. Lower conduit. The electric conduit for suspending a control operation box according to claim 1, wherein the conduit 1 is a rigid tube.