JPH0419737Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a cable-through type terminal block, and particularly relates to a cable-through type terminal block in which a terminal block and a dustproof packing are integrated.

[Conventional technology]

Industrial equipment such as numerical control devices are used in poor environments, so the inside and outside of the equipment are shielded to prevent dust from entering the equipment, a so-called sealed structure.

Of course, the terminal block that receives cables from the outside is installed inside the device, and in order to introduce the cable into the device, a gasket is used to prevent external dust from entering the device. Cord grips, etc. that have the function of clamping the packing and cable are used.

[Problem that the invention attempts to solve]

Therefore, the packing, cord grip, etc. for pulling cables in from the outside are always separate from the terminal block, which requires a large number of parts, and requires a considerable amount of hole drilling and installation man-hours when there are a large number of cables. It was hot.

The present invention has been made in view of these points, and an object of the present invention is to provide a cable-through type terminal block that integrates a terminal block and a dustproof packing.

[Means for solving problems]

In order to solve the above problems, the present invention has a terminal block main body that has a connector for connecting the cable at the end, a conical through hole in the center with a relief part on the inner wall, and a gasket having a through hole, having a conical outer shape, placed in the through hole of the terminal block main body, and having a height of the cone longer than the length of the through hole of the terminal block main body; A cable through-type terminal block is provided.

[Effect]

The terminal block that connects the cable and the packing are integrated, reducing the number of parts and installation man-hours. In addition, when the conical packing is attached to the bulkhead, the height of the cone is longer than the length of the through hole in the terminal block body, so when it is pressed against the bulkhead, it will be pressed against the inner wall of the conical through hole in the terminal block body. Then, a part of it bites into the relief part and serves to further improve the airtightness and reduce the impact elastic stress of the packing.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a plan view of the cable-through type terminal block of the present invention. In the figure, 1 is the terminal block main body,
Various plastics can be used. Terminal block body 1
has a hole 1a in the center for inserting a gasket for clamping the cable, and connectors such as copper are screwed to both sides of the hole 1a. Furthermore, there are mounting holes 3a and 3b on the wall at both ends. Reference numeral 5 denotes a gasket for fixing the cable and for dustproof sealing, the details of which will be described later.

FIG. 2 shows a sectional view taken along arrow A in FIG. 1. In the figure, 1 is a terminal block main body, and the terminal block main body 1 is provided with a relief part 4 for escaping the volume of the seal when the seal 5 is pressed in the right direction in the figure. Numeral 5 is a gasket, which can be made of various types of rubber, and has a through hole 6 for a cable in the center. The gasket 5 is inserted into the hole 1a of the terminal block main body 1 in the direction of the arrow.

FIG. 3 shows a perspective view of the packing 5. Here, a cable through hole 6 is provided in the center of the packing 5.
a and 6b are provided, and a slit 7 is provided so that the cable can be easily inserted from the side of the packing 5.

Figure 4 shows a diagram when the cable is actually inserted and fixed. In the figure, cables 8a and 8b have faston-shaped terminals crimped at their ends, and are inserted and fitted into the connectors 2a and 2b.

FIG. 5 shows a sectional view taken along arrow A in FIG. 4. In the figure, 1 is the terminal block body, 5 is the packing, and 8
is a cable, and 10 is a partition wall. Here, partition wall 1
The left side of 0 is inside the device, and the right side is outside. In normal conditions, the gasket 5 is longer than the terminal block main body 1, as shown in FIG. 2, and when attached to the partition wall 10, it is pressed to the right as shown in FIG. , and a part of it bites into the relief part 4 inside the terminal block main body 1. As a result, the cable 8 is fixed, and gaps are eliminated to achieve a sealing effect with the outside.

In this way, the terminal block body that has the connector for connecting the cable and the gasket that secures the cable and seals it from the outside are integrated.
The number of parts is reduced, making it possible to reduce mounting hole drilling and assembly man-hours.

In addition, we provided a relief part on the inner wall of the through hole in the terminal block body, and the length of the packing was made longer than the through hole.
When attached to a rocker, etc., a part of the gasket bites into the relief part, increasing airtightness and reducing rebound stress on the gasket.

In the above explanation, the cable has two single wires, but of course this number can be changed by changing the shape of the packing, and by making the hole in the packing larger, it can be made into a multi-core cable. You can also use

Further, although the terminal block has two terminals connected, it is possible to increase the number of connecting parts as appropriate.

[Effect of idea]

As explained above, in this invention, the terminal block main body with the connector for connecting the cable and the gasket that fixes the cable and seals it from the outside are integrated, so the number of parts is reduced, and the mounting hole drilling and assembly are possible. Man-hours can be reduced.

In addition, we provided a relief part on the inner wall of the through hole in the terminal block body, and the length of the packing was made longer than the through hole.
When attached to a rocker, etc., a part of the gasket bites into the relief part, increasing airtightness and reducing rebound stress on the gasket.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the cable-through type terminal block of the present invention, Fig. 2 is a sectional view taken along arrow A in Fig. 1, Fig. 3 is a perspective view of the packing, and Fig. 4 shows the actual cable inserted. A plan view of the fixed cable-through type terminal block, and FIG. 5 shows a cross-sectional view taken along arrow A in FIG. 4. 1...Terminal block body, 2a, 2b...Connector, 3
a, 3b... Mounting hole, 4... Relief part, 5... Packing, 6, 6a, 6b... Cable hole, 8, 8
a, 8b... Cable, 9a, 9b... Faston terminal, 10... Bulkhead.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A terminal block main body having a connector for cable connection at the end and a conical through hole in the center with a relief part on the inner wall; a gasket having a conical outer shape, which is placed in the through hole of the terminal block main body, and the height of the cone is longer than the length of the through hole of the terminal block main body; A cable-through type terminal block characterized by: (2) The cable through-type terminal block according to claim 1, wherein the packing is provided with a slit for inserting the cable from the side.