JPH0218532Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in the connector body of a multi-pin connector.

Multi-pole connector A (or multi-core connector) is
Usually, as shown in FIGS. 1 and 2, a pair of outer tubes 10, 10 are made of a metal material such as a steel plate and are formed into a rectangular tube shape with a flange 10a at one open end.
By abutting and closing the flanges 10a, 10a, a shell 1 is formed which has a flange portion 1a formed by the abutted flanges 10a, 10a in the middle of the body and is open front and rear. Inside the shell 1, an insulator 2 molded into a prismatic shape from a synthetic resin material is assembled when the shell 1 is assembled, and a large number of insulators are molded in line with the insulator 2. Through hole 3...
A connector main body a is assembled by inserting and assembling a large number of contacts 4 formed of metal material, respectively, and the contacts 4 of the connector main body a are assembled.
Each cord wire 5 of the cord 5 is connected to each connection terminal portion 40 of the cord 5.
By connecting 0... respectively, it is assembled into a male or female multi-pole connector A, but in reality, each contact 4... of the connector main body a and the cord wire 50... connected to it are connected to each other. A cover 6 that covers the area from the rear half of the shell 1 of the connector body a to the tip of the outer skin 5a of the connected cord 5 is separately molded from a synthetic resin material so as to cover the outer periphery of the connector body a. By covering it as shown by the chain line in FIG. 2, it is assembled into a multi-pole connector A product.

The multi-pole connector A configured in this way includes an assembled connector main body a and each contact 4 of the assembled connector main body a.
When attempting to form the cover 6, which will become the knob part, by integrally molding it with a synthetic resin material by setting the tip of the cord 5 connected to the mold into a mold, the synthetic resin is injected under pressure into the mold. A part of the material passes through the gap between the inner peripheral surface of the through hole 3 formed in the insulator 2 and the outer peripheral surface of the contact 4 inserted into the through hole 3, and then passes through the contact 4. There is a problem that leakage to the contact terminal portion 41 side and condensation occurs there, resulting in many products with poor connections. To prevent the leakage of the synthetic resin material, a metal material such as a copper plate is formed into a thin cylindrical shape for the contacts 4, and the cord wire 50 of the cord 5 is connected to the connection terminal portion 40 side of the contact 4 as shown in FIG. When using a so-called crimp terminal, which is inserted as shown in FIG.

The present invention was developed to solve this problem, and even when the above-mentioned crimp terminal is used as a contact, the synthetic resin material leaks from the contact terminal side of the contact. To provide a means by which a cover serving as a knob can be integrally formed by molding from a synthetic resin material without having to do so.

For this purpose, in the connector body a of the multi-pole connector A formed as described above, the insulator 2 held on the rear end side of the connector body a is located behind the insulator 2 held in the shell 1 of the connector body a. A holding frame b that surrounds the end face in a frame-like manner is installed, and two pieces connected to the holding frame b by sawtooth joint surfaces W, W that are abutted against each other to form a continuous block shape. 7, 7 are held so as to close the rear of the rear end surface of the insulator 2, and the sawtooth joint surfaces W, W of the two pieces 7, 7 are formed on one piece 7 side. The protrusions 70 of the serrated joint surface W are formed to fit into and join the recesses 71 of the serrated joint surface W formed on the other piece 7 side, and these protrusions A holder for holding a cord wire 50 connected to each contact 4 fitted into the through hole 3 of the insulator 2 between each protruding end of the insulator 70 and each bottom of the recess 71. The present invention proposes a connector main body of a multi-pole connector characterized in that portions 8 are installed therein.

Next, an example of implementation will be described in detail with reference to the drawings. In addition,
The same reference numerals in the drawings as in the previous means shall be used for components having the same effect.

FIG. 4 is a perspective view showing the state of the connector body a of the multi-pole connector A in which the present invention can be implemented before the pieces 7, 7 are assembled and held;
2 is a shell made of a metal plate constituting the connector body a; 2 is an insulator made of a molded synthetic resin material held in the shell 1; 3... is a through hole formed in the insulator 2; 4... are the contacts inserted and held in the through holes 3,
5 is a cord, 50... is a large number of cord wires covered with the outer skin 5a of the cord 5, 7, 7 is a piece before being assembled, and b is a rear part of the connector body a for holding the pieces 7, 7. A holding frame provided at the end is shown.

The shell 1 is a normal shell 1 which is formed of a metal material into a horizontally flat rectangular tube shape and has a flange 1a at the middle part of its body in the front-rear direction (axial direction). , Tsuba 1 each formed from a metal plate
Although the two outer cylinders 10, 10 with Oa are formed by butting their flanges 10a, 10a together and gluing them together, there are cases where they are formed as a continuous piece by casting or cutting, etc. It may be formed as appropriate.

The insulator 2 is made of a synthetic resin material and has through holes 3 that penetrate the connector main body a in the front-rear direction (left-right direction in FIG. 7) as shown in FIG. It is a normal type that is formed so that it is formed in two rows, upper and lower, as shown in the figure.
When assembling the shell 1 by joining the two outer cylinders 10, 10, they are assembled into the shell 1 by fitting them in advance as shown in Fig. 7, but the shell 1 is continuous as one body. When the shell 1 is formed by casting or the like, it may be set in a mold together with the shell 1, a synthetic resin material is poured in, and the molding is performed using an insert.

Further, the contact 4 made of the crimp terminal is
As in the case of the conventional example described above, the tip of the cord wire 50 is inserted into the connection terminal section 40 on the rear end side with the core wire 50a protruding from the outer sheath 50b, and the core wire 50a and the outer sheath are connected. 50b is connected to the outer circumference of the connecting terminal portion 40 by caulking the lug piece of the connecting terminal portion 40 (FIG. 3),
In that state, connect the contact terminal part 41 to the insulator 2.
By fitting into each of the through holes 3 from the rear end surface 2a side of the insulator 2, it is held in the insulator 2 as shown in FIG.

In the illustrated example, the holding frame b is attached to the rear end of the connector body a so as to surround the rear end surface 2a of the insulator 2 in a frame-like manner. When molding with
By forming the insulator 2 in such a manner that the outer periphery of its rear end surface 2a extends rearward like a sheath,
Although it is formed of the synthetic resin material so as to be continuous with the insulator 2, the edge of the rear opening 1b of the shell 1 is made to extend rearward in a cylindrical shape as shown in FIG. The holding frame b may be configured to have an end projecting rearward from the rear end surface 2a of the insulator 2.

As shown in FIG. 4, the two pieces 7, 7 are formed into an upper piece 7 and a lower piece 7 so that they are continuous in one block shape by abutting against each other in the vertical direction. The lower end surface of the upper piece 7 and the upper end surface of the lower piece 7, which are the abutting surfaces of The joint surfaces W, W are formed in a sawtooth shape that alternately continue corresponding to the pitches, and the outer peripheral surface is in a state where the joint surfaces W, W are joined to form a continuous block shape. In this case, it is formed so as to fit tightly into the inner peripheral side of the holding frame b installed at the rear end portion of the connector main body a. The serrated joint surfaces W, W are joined together by the projections 70 of one joint surface W fitting into the recesses 71 of the other joint surface W, so that they are in close contact with each other. It is formed like this. Further, the above-mentioned cord wire 50 is attached to the protruding end of each protrusion 70 on the joint surfaces W, W
An arcuate recess 80 is formed in close contact with the half circumference of the outer circumference of the outer skin 50b of the cord wire 50, and the bottom of the recess 71 is formed in an arcuate surface 81 in close contact with the half circumference of the outer circumference of the outer skin 50b of the cord wire 50. As a result, when the upper piece 7 and the lower piece 7 are joined so that their joint surfaces W, W are biting into each other and fitted, the protrusion of the joint surface W of one piece 7 is Part 7
A holding part 8 is formed between the protruding end of the cord wire 50 and the bottom of the recessed part 71 of the joint surface W of the other piece 7 to tightly hold the outer periphery of the outer skin 50b of the cord wire 50. . Also, these two pieces 7,7
As shown in FIG. 5, when molding them with synthetic resin material, one end side is a flexible connecting part 9 made of molded synthetic resin material, and is formed in a continuous state. In some cases, it may be divided into three or more pieces.

The embodiment device configured as described above operates as follows.

When connecting the cord wires 50 to the connector body a and molding the outer periphery of the rear half of the connector body a and the tip of the cord 5 with a synthetic resin material so as to cover the outer periphery of the connecting portion of the cord wires 50. , the two pieces 7, 7 with their serrated joint surfaces W,
The cord wires 50 connected to the contacts 4 of the connector body a are individually positioned in the recesses 71 of the W, and the cord wires 50 are connected to the joint surface W and the joint surface. By joining the wires from above and below with W, each cord wire 50...
However, between the abutted joint surfaces W and the joint surfaces W, there is a recess 8 at the protruding end of the protrusion 70 on one of the joint surfaces W.
0 and the arc surface 81 at the bottom of the recess 71 of the other joining surface W
The peripheral surface of the outer skin 50b of... comes to be held.

Next, from this state, the outer peripheries of the two pieces 7, 7 are attached to the holding frame b provided at the rear end of the connector body a.
By fitting it into the inner periphery of the insulator 2, the joint surfaces W, W of the two pieces 7, 7 are tightly closed together, tightly closing the outer surface of the rear end surface 2a of the insulator 2, Further, each of the holding portions 8 tightly holds the outer periphery of the outer cover 50b of each cord wire 50.

Then, when this state is reached, the connector body a and the cord wires 50 connected thereto are set in the mold B, and the molten synthetic resin material is poured under pressure as usual, so that the synthetic resin material makes contact. The cover 6 can be molded around the outer periphery of the connecting portion between the connector body a and the cord wires 50 without leaking to the side of the contact terminal portions 41 of the connector body a and the cord wires 50.

As explained above, in the means of the present invention, a serrated joint surface W, The outer circumferential sides of the two pieces 7, 7 which are joined and closed together by W are fitted to tightly close the outside of the rear end surface 2a of the insulator 2, and at the same time, the joint surface W and the joint surface W are The holding portions 8 formed therein tightly hold the outer peripheries of the outer skins 50b of a large number of cord wires 50 connected to the contacts 4 of the connector main body a, and rotate the cord wires 50. Since the cover 6 is sealed, the leakage of the synthetic resin material when molding the cover 6 with synthetic resin material can be prevented by simply fitting the two pieces 7, 7 into the holding frame b. This can definitely be prevented.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the multi-pole connector, Fig. 2 is a longitudinal sectional side view of the same as the above, Fig. 3 is a longitudinal sectional view of the crimp terminal of the same as the above, and Fig. 4 is a piece of the connector body of the multi-pole connector according to the present invention. FIG. 5 is a perspective view of another embodiment of the piece to be assembled to the same connector body as above; FIG. 6 is a perspective view of the same connector body as described above with the piece assembled; FIG. Figure 7 is an explanatory diagram of the process of molding the connector main body,
FIG. 8 is an explanatory view of the molding process of another embodiment of the connector body same as above. Explanation of drawing symbols, A...Multi-pole connector, B...
Mold, a... Connector body, b... Holding frame, 1...
...Ciel, 1a...Trim part, 1b...Open mouth, 10
...Outer tube, 10a...Brim, 2...Insulator, 2a...Rear end surface, 3...Through hole, 4...Contact, 40...Connection terminal section, 41...Contact terminal section, 5... ...Cord, 5a...Outer cover, 50...Cord line, 50a...Core wire, 50b...Outer cover, 6...
Cover, 7... Piece, 70... Projection, 71...
Recessed part, 8...Holding part, 80... Recessed part, 81... Arc surface, 9... Connecting part, W... Joint surface.

Claims (1)

[Scope of utility model registration request] In a connector body of a multi-pole connector consisting of a shell 1, an insulator 2 held by the shell 1, and contacts 4 held by fitting into a number of through holes 3 provided in the insulator 2,
A holding frame b that surrounds the rear end surface of the insulator 2 in the shape of a frame is installed on the rear end side of the connector main body a. Two pieces 7, 7 connected by joint surfaces W, W and continuous in one block shape
is held so as to close the rear of the rear end surface of the insulator 2, and the sawtooth joint surfaces W, W of the two pieces 7, 7 are formed on the side of one piece 7. A serrated joint surface W in which protrusions 70 of the joint surface W of the shape are formed on the other piece 7 side
It is formed so as to fit into and join the recesses 71 of the projections 70 and the recesses 71.
A holding part 8 for holding a cord wire 50 connected to each contact 4 to be fitted into the through hole 3 of the insulator 2 is installed between each bottom part of the insulator 2. The connector body of a multi-pole connector.