JPH04547Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to an improvement of a connector used for connecting wiring.

[Conventional technology]

6 to 8 are for explaining a conventional connector. FIG. 6 is a sectional view of the connector, FIG. 7 is a front view of the retainer ring, and FIG. 8 is a perspective view of the shell. In FIG. 6, reference numeral 1 denotes a shell, and the shell 1 is provided with a cylindrical portion 1a, a mounting portion 1b, and a connecting portion 1c, as shown in detail in FIG. 2 is an insulator inserted into the cylindrical portion 1a of the shell 1; 3 is a retainer ring that fixes the insulator 2 so that it does not slip out of the cylindrical portion 1a of the shell 1; As shown in FIG. 7, a ring-shaped portion is cut out and inserted into a ring-shaped groove 1d provided in the cylinder upper part 1a of the shell 1, thereby fixing the insulator 2. 4 is a contact held by the insulator 2, and 5 is a wiring connected to this contact 4 by soldering or the like.

[Problem that the invention attempts to solve]

Since the conventional connector described above is configured as described above, when connecting the wiring 5 to the contact 4, the wiring 5 is pulled out outside the hole provided at the location where the connector is to be installed, and the wiring 5 is pulled out. It is necessary to connect the contact 4 and the wiring 5 by soldering or the like, and the wiring 5 has to be made longer than necessary to prevent the connector from coming into contact with the place where the connector is to be installed. Ta. Therefore, after connecting the wiring 5 to the contact 4, when the connector is attached to the mounting portion, it is necessary to push the long wiring back into the hole, and a space is required to accommodate the long wiring inside the hole. However, in applications where this connector is used, for example in servo motors, there is a strong demand for miniaturization, and it has not been possible to provide extra wiring space and increase the size. The length of the lead wire 5 is made as short as possible to connect it to the contact 4, but the space between the short lead connector and the mounting part for attaching this connector is narrow, so the soldering tools are not suitable for the connector. There were problems such as the connector itself touching the mounting part of the connector, requiring a considerable amount of time to connect.

On the other hand, it is conceivable to remove the retainer ring 3 inserted into the ring-shaped groove 1d of the cylindrical part 1a and pull out the insulator 2 that fixes the contact 4 from the shell 1 before connecting it. The retainer ring 3 is inserted and fitted into the groove 1d of the cylindrical portion 1a.
It was difficult to take out the contact 4 from the groove 1d, and therefore the contact 4 could not be pulled out from the connector.

This invention was made to solve the above problems, and the purpose is to shorten the wiring length for soldering work and to obtain a connector that can be easily assembled. .

[Means for solving problems]

In the connector according to this invention, a ring-shaped part of the retainer ring is cut off, both cut ends are bent, and the connector is inserted into a ring-shaped groove formed on the inner wall of the cylindrical part of the shell for support. , the bent portion of the retainer ring engages with a notch provided in a portion of the retainer ring fitting portion of the shell.

[Effect]

In the connector of this invention, since both ends of the retainer ring are bent, the bent portions can be used to remove the insulator from the ring-shaped groove of the shell, thereby allowing the insulator to be taken out from the shell.

[Example of idea]

FIG. 1 is a partially sectional perspective view showing an embodiment of this invention, and numerals 2, 4, and 5 are exactly the same as the embodiment described above. 6 is a shell, and this shell 6 is formed of a cylindrical portion 6a, a mounting portion 6b, and a connecting portion 6c. A notch 6d is provided in a part of the circumference of the cylindrical portion 6a, and the cylindrical portion 6a is provided with a notch 6d.
A ring-shaped groove 6e into which a retainer ring (to be described later) is inserted is provided in the inner wall of a. The cutout portion 6d is provided in a part of this ring-shaped groove portion 6e. 6f is the mounting part 6b of shell 6
This is a bolt hole for attaching a connector. Reference numeral 7 designates a retainer ring, in which a portion of the ring shape is cut out, and both ends of the cutout are bent as shown in detail in FIG. 2 to provide a bent portion 7a. Then, the insulator 2 is inserted into the cylindrical portion 6a of the shell 6, and a retainer ring 7 is inserted into the ring-shaped groove 6e of the shell 6 as shown in FIG. is inserted. The bent portion 7a of the retainer ring 7 is assembled at the position of the notch 6d so as not to interfere with the cylindrical portion 6a.
a is engaged.

In the connector configured as described above, the bent portion 7a of the retainer ring 7 is located in the cutout portion 6d of the shell 6, so that the shell 6 and the bent portion 7a of the retainer ring 7 do not interfere with each other, and the cylindrical portion 6a is closed. The insulator 2 is fixed by being inserted into the ring-shaped groove 6e. Hold the bent portion 7a of the retainer ring 7 from the notch 6a of the shell 6 with fingers, a screwdriver, radio pliers, etc., and remove the retainer ring 7 from the ring-shaped groove 6e in which the retainer ring 7 is inserted into the shell 6. The insulator 2 can be extracted from the shell 6 and disassembled. Then, the contact 4 and the wiring 5 are connected with solder or the like, and then the cylindrical part 6 of the shell 6
A, the insulator 2 is fixed by a retainer ring 7 so that it will not come off from the shell 6, and is fixed by inserting a bolt into the bolt hole 6f used in the mounting portion 6b of the shell 6.

Incidentally, since the wiring 5 is inserted into the ring of the retainer ring 7 when the retainer ring 7 is assembled, the work is easier if the interval between the bent portions 7a at the ends of the retainer ring 7 is sufficiently wide.

Further, in the above embodiment, the cutout portion 6 of the shell 6
We have explained the case where d is provided in one place, but the fourth
As shown in the figure, two notches 8d may be provided in the cylindrical part 8a of the shell 8, and as shown in FIG. Alternatively, the opening may be opened to provide the same effect as in the above embodiment.

[Effect of idea]

As explained above, the retainer ring has a ring-shaped part cut out, both ends of which are bent, and a part of the cylindrical part of the shell is cut out. The insulator can be taken out from the shell, so it can be easily connected to the contacts while keeping the wiring short.

[Brief explanation of drawings]

Fig. 1 is a partially sectional perspective view showing a state in which a connector according to an embodiment of the invention is attached, Fig. 2a is a plan view of the retainer ring, Fig. 2b is a side view of the retainer ring, and Fig. 3 is a connector. FIG. 4 is a perspective view of the connector, FIG. 5 is a plan view of the retainer ring, and FIG. 6 is a diagram of a conventional connector. 7 is a plan view of the retainer ring, and FIG. 8 is a perspective view of the connector. In the figure, 2 is an insulator, 4 is a contact, 5 is a wiring, 6 and 8 are shells, 6a, 8a
6d and 8d are notched portions, 7 and 9 are retainer rings, and 7a and 9a are bent portions.

Claims (1)

[Scope of utility model registration request] A contact to which wiring is connected, an insulator that fixes this contact, a shell in which this insulator is installed inside a cylindrical part, and a cylinder of the shell to prevent the insulator from detaching from the cylindrical part of the shell. A retainer ring with a partially cut out part is inserted into and supported by a ring-shaped groove formed on the inner wall of the shell, and a bent part is formed at both ends of the cutout of the retainer ring. A connector characterized in that a notch is provided in a part of the retainer ring fitting part of the cylindrical part, and the bent part is engaged with the notch.