JPH0727581Y2 - Electrical connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a waterproof electric connector used for connecting a wire harness.

[Prior Art] Conventionally, this type of electrical connector has a structure as shown in FIGS. 4 and 5. That is, reference numeral 1 is an electric connector composed of a male housing 2 and a female housing 3. Inside the male housing 2, a plurality of male terminals 5 connected to a wire harness 4 are arranged. A plurality of female terminals 6 connected to the wire harness 4 and connected to the male terminals 5 are provided inside the female housing 3. Also, the male housing 2 has a locking piece.
2a is formed, and the female housing 3 is formed with a locking claw 3a. When both housings 2 and 3 are completely fitted, the locking piece 2a and the engaging claw 3a are engaged. The two housings 2 and 3 are prevented from being separated from each other. Reference numeral 7 denotes a waterproof packing made of rubber or soft resin interposed between the male housing 2 and the female housing 3 in a pressurized state. With this packing 7, moisture enters between the male terminal 5 and the female terminal 6. It is supposed not to be done. Further, the packing 7 is prevented from falling off from the male housing 2 by a packing holding ring 10 having a protrusion 9 which is engaged with a through hole 8 formed in the male housing 2.

[Problems to be Solved by the Invention] However, in such a waterproof connector having a conventional structure, a separate part is provided inside the housing 2 as a means for preventing the waterproof packing 7 fitted in the male housing 2 from falling off. Since it is necessary to fit the packing holding ring 10 which is the above, the cost is increased due to an increase in the number of parts and an increase in the assembly process. In addition, in the above structure, the packing retaining ring 10 may be forgotten to be assembled, which may cause the packing 7 to fall off, and it is also difficult to confirm whether or not the packing retaining ring 10 is attached. There was a problem.

[Means for Solving the Problem] The present invention has been made in view of such conventional problems, and the housing is made of resin to prevent the waterproof packing from falling off, which is fitted in the housing. In doing so, it is possible to integrally mold it to reduce the number of parts and the associated man-hours, and also to prevent the packing from falling off, thereby providing an economical and reliable electrical connector. .

[Embodiment] The present invention will be described in detail below with reference to an embodiment shown in FIGS. 1 to 3.

Reference numeral 11 denotes a synthetic resin male housing formed in a square shape in the front. A female housing (not shown) fitted in the male housing 11 is provided inside the male housing 11.
A waterproof packing 12 for enhancing the waterproof property between is inserted. A thin arm portion 13 having flexibility and elasticity is projectingly provided on the outer side of a pair of opposing wall surfaces of the male housing 11, and a locking piece 14 is integrally formed at the tip of the thin arm portion 13. Has been done. Further, a through hole 15 penetrating the inside and outside of the housing 11 is formed on the outer side of the pair of wall surfaces, and the locking piece 14 has a housing of the through hole.
11 can be inserted from the outside to the inside. Further, on the side surface of the piece 14, a ridge 16 for engaging with the housing 11 is formed. 17 is housing 11
Is a protection wall which is located on both sides of the thin wall arm portion 13 on the outer side of the wall surface and is provided integrally with the housing 11 in order to prevent a mechanical load on the thin wall arm portion 13.

The above is the configuration of the present embodiment. Next, the operation thereof will be described. A waterproof packing is provided inside the housing 11.
After the 12 is fitted, the locking piece 14 formed at the tip of the thin arm 13 having flexibility is fitted inside the through hole 15 from the outside to the inside and the locking piece 14 is formed. The ridge 16
Press-fit as it is formed inside the housing 11 (3rd
See figure). As a result, the tip end of the locking piece 14 is projected and held on the inner side surface of the housing 11, so that the tip of the locking piece 14 prevents the packing 12 from falling off.

As described above, in this embodiment, the waterproof packing 12 fitted in the housing 11 is prevented from falling off by the locking piece 14 so as not to come out of the housing 11. Since this locking piece 14 is integrally molded with the housing 11 at the time of resin molding of the housing 11, a locking member which is another component is formed as in the prior art, and further, the locking member is assembled. Work process can be omitted,
Economic efficiency is improved. Further, the locking piece 14 is the housing 11
Since it is integrally provided with the locking piece 14, the locking piece 14 will not fall out of the housing and will not be lost, effectively preventing the packing from falling off and effectively preventing forgetting to attach the locking piece 14. It is possible.

[Advantage of the Invention] The invention is as described above, and the male housing 19
The through holes 15 extending in the direction intersecting with the insertion direction of the waterproof packing 12 are formed by penetrating into the through holes 15.
Locking piece that prevents the screw from coming out of the female housing 11.
14 is integrally provided via a flexible thin piece 13, and the engaging piece 14 is engaged with the inner opening edge of the through hole 15.
16 is provided so that the locking piece 14 is inserted into both the through holes 15 so that the engaging portion 16 is engaged with the through hole 15 so that the waterproof locking packing 12 does not come out from the female housing 11. Therefore, since the locking piece 14 is formed integrally with the female housing, the number of parts can be reduced and the parts can be easily managed. Further, the engaging piece 14 is inserted into the through hole 15 and the engaging portion is engaged with the through hole to prevent the waterproof packing from coming out from the female housing, rather than manually performing the work. Since the locking piece can be inserted into the through hole by an automatic machine such as an automatic assembling machine or an automatic inserting machine, the work of engaging the engaging portion with the through hole is performed automatically. Therefore, there is an excellent effect that the automatic insertion and mounting of the entire waterproof packing can be easily achieved in combination with the automatic insertion device of the waterproof packing and the terminal by the automatic device machine.

[Brief description of drawings]

FIG. 1 is an explanatory sectional view of an electric connector according to the present invention, FIG. 2 is a perspective view of an essential part thereof, FIG.
5 and 5 are explanatory views of a conventional example. 11 …… Housing, 12 …… Waterproof packing 13 …… Thin arm, 14 …… Locking piece 15 …… Through hole, 16 …… Projection 17 …… Protective wall.

Claims (1)

[Scope of utility model registration request] 1. A terminal (2) housed in both housings (11), (3) by inserting a male housing (3) into a female housing (11) having a waterproof packing (12) mounted therein. 5) and (6) are connected to each other, and the waterproof packing (12) is sandwiched between the housings (11) and (3) so that water does not flow into the accommodation portion of the terminals (5) and (6). In the electrical connector thus configured, a through hole extending in a direction intersecting the inserting direction in the male housing (3) is inserted into the inserting portion into which the male housing (3) in the female housing (11) is inserted. A flexible thin piece is provided with a locking piece (14) which is provided with (15) and which prevents the waterproof packing (12) from coming out of the female housing (11) by penetrating into the through holes (15). It is provided integrally via (13), and the locking piece (14) is An engaging portion (16) that engages with the inner opening edge of the hole (15) is provided, and the locking piece (14) is inserted into both the through holes (15) to allow the engaging portion (16) to penetrate through. An electrical connector characterized in that the waterproof packing (12) is engaged with a hole (15) so as not to come out of the female housing (11).