JPS583255Y2 - Terminal block - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a terminal block for connecting electrical equipment to a power source, a load, or the like.

Conventionally, the main body of an electrical device having contact fittings and the terminal block having contact pieces, terminal screws, etc. have been independent.
Install the terminal block in place and power on.

Some devices have a structure in which, after completing the wiring to the load, the main body of the electrical device is inserted into the terminal block to make an electrical connection, and then mechanically fixed using screws or the like.

FIG. 1 shows an example of this, in which 1 is the electrical equipment body, 2 is a contact fitting that is an external connection part, 3 has insertion holes 4 and 5 through which fixing screws 7 and terminal screws 8 are inserted, and one end has a bent part. 9 is a terminal block main body, 10 is a presser foot having a screw hole to be screwed into the fixing screw 7,
11 is Natsu.

To assemble the above terminal block, first, the recess 9a of the terminal block main body 9
The nut 11 is fitted into the nut 11, the contact piece 3 is placed on top of the nut 11, and the terminal screw 8 is screwed into the nut 11 through the insertion hole 5.

Next, place the presser foot 10 on the contact piece 3, screw the fixing screw 7 into the screw hole of the presser foot 10 from below the terminal block body 9, and then attach the contact piece 3 and the terminal block body 9 to each other. This is for fixing the presser foot 10.

Then, the contact fitting 2 protruding from the electrical equipment main body 1 is inserted into the terminal block, and the contact fitting 2 and the contact piece 3 are brought into contact and electrically connected.

However, in the case of the above conventional example, the contact piece 3. Natsu 11,
Terminal screw 8. The presser foot 10 is assembled from above the terminal block main body 9, but the tightening of the fixing screws 7 only requires holding the presser foot 10 and turning the terminal block main body 9 over, so the direction of the work cannot be determined. The opposite was true, leading to deterioration in workability.

Furthermore, since parts such as the presser foot 10 and the fixing screw 7 are required, there is also a drawback that the number of parts increases.

The present invention was devised in view of the above-mentioned problems, and an object of the present invention is to provide a terminal block that can be assembled from one direction, has a small number of parts, and has a simple structure.

Hereinafter, the present invention will be explained based on examples.

In FIG. 3, 12 is the same electrical equipment as before, 13
The contact fittings 13 are external connection parts, and instead of the contact fittings 13, a printed circuit board with copper foil printed at predetermined positions may be used.

Reference numeral 14 denotes a contact piece made of a conductive spring material, which has a contact portion 15 at one end, and an insertion hole 16 and a fitting hole 17 at the other end (see FIG. 4).

Reference numeral 19 denotes a terminal block main body integrally molded from synthetic resin, and the terminal mounting portion partitioned off by a barrier 20 has a recess 21 and a hook 22 protruding from the side opposite to the recess 21 (the right side in FIG. 3). A recess 23 recessed in the direction is formed.

Note that 24 is a terminal screw, 25 is a washer, and 26 is a nut.

Here, to explain the assembly order of the terminal block, first, the nut 26 is fitted into the recess 21 of the terminal block main body 19, and the contact piece 14 is placed on the terminal mounting part of the terminal block main body 19.

When the central curved portion 18 of the contact piece 14 is pushed into the rear recess 23 with a jig such as a screwdriver, both ends of the contact piece 14 are bent inward, and the fitting hole 17 of the contact piece 14 is bent inward.
When the hook 22 and the hook 22 are fitted together and the pressing force of the jig is released,
The edge of the fitting hole 17 opposite to the insertion hole 16 (the third
(right side in the figure) fits into the lower surface of the hook 22, and the contact piece 14
is fixed by the hook 22 to prevent removal.

Next, the terminal screw 24 having the washer 25 is screwed into the nut 26 through the insertion hole 16 of the contact piece 14 to complete the assembly.

When the electrical device main body 12 is inserted into the terminal block assembled as described above, the contact portion 15 of the contact piece 14 is bent to the right in FIG. 3 and comes into pressure contact with the side surface of the contact fitting 13, thereby establishing an electrical connection.

In addition, when the electric wire is connected to the terminal screw 24, even if a tensile force is applied to the electric wire upward or to the left in FIG. 3, the fitting hole 17 and the hook 22 are engaged, so that the contact piece 14 does not come off easily.

As is clear from the above explanation, according to the present invention, when assembling the terminal block, all the parts can be assembled from the top of the terminal block body, making assembly easy and eliminating the need for conventional presser stands and fixing screws. This reduces the number of parts, making it cheaper.

Further, since the fitting hole and the hook are fitted on the opposite side from the terminal screw insertion hole, the contact piece does not easily come off even if a tensile force is applied to the electric wire connected to the terminal screw.

[Brief explanation of drawings]

Figure 1 is a partial cross-sectional view of a conventional terminal block and electrical equipment;
The figure is a perspective view of the contact piece, and the third and subsequent figures show the present invention.
The figure is a partial sectional view of the terminal block and the electrical equipment, FIG. 4 is a perspective view of the contact piece, and FIG. 5 is a plan view of the terminal block. 12...Electrical device main body, 13...Contact fittings (external connection part), 14...Contact piece, 15.
...Contact part, 16...Insertion hole, 17...
...Fitting hole, 19...Terminal block body, 21.
... recess, 22 ... hook, 24 ...
...Terminal screw, 26...nut.

Claims (1)

[Scope of utility model registration request] In a terminal block that is electrically connected by inserting an external connection part protruding from the main body of an electrical device, the terminal is integrally molded with resin and has a recessed part and a hook protruding from the recessed part on the side opposite to tt. It consists of a base body and a conductive spring material, and has a contact part that contacts the external connection part at one end, and a terminal screw insertion hole and a terminal screw insertion hole at the other end that fits into the hook, and the opposite side from the insertion hole. a contact piece having a fitting hole whose edge engages with the hook; a nut fitted into the recess of the terminal block body; and a terminal screw screwed into the nut through the terminal screw insertion hole of the contact piece. A terminal block consisting of