JPH07263068A - Waterproof cover for electric connector - Google Patents

Abstract

PURPOSE:To improve installing workability to a connector without deteriorating waterproof performance by forming a pushing-in rigid body part on one side of an engaging opening part, and forming a hooking elongating part on the other side. CONSTITUTION:A waterproof cover 1 is installed on a female connector 7, and in order to cover a fitting part to a male connector 9, first of all, one side 7a of the connector 7 is pushed in a pushing-in rigid body part 31 of an engaging opening part 17, and an end surface 21 of a sealing part 29 is brought into close contact with an outer peripheral surface of the connector 7. Next, a gripping part 23 is picked, and the waterproof cover 1 is pulled outside, and a hooking elongating part 33 is elongated. Thereby, a frontage of the opening part 17 becomes wide, and in this condition, it is hooked on the other side of the connector 7, and the sealing part 29 is engaged with a locking rib 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof cover for an electrical connector, which waterproofs a fitting portion of the electrical connector including male and female connectors.

[0002]

4 and 5 show a waterproof cover 1 of a conventional electric connector and a connector 3 waterproofed by the waterproof cover 1 of the electric connector. The connector 3 includes a female connector 7 and a male connector 9 (see FIG. 5). The female connector 7 is a fitting hood 5 that is divided into four vertical walls.
The male connectors are fitted in the fitting hood portions 5, respectively. This female connector 7
From the outer peripheral surface 8 of the fitting hood 5, a locking rib 11 is provided so as to project over the entire circumference on the opening edge side of the fitting hood portion 5. The female connector 7 has an electrical contact portion of the male terminal 13 protruding from the fitting hood portion 5, and the male connector 9 has a female terminal 15 housed therein. Then, when the male connector 9 is inserted and fitted into the fitting hood portion 5 of the female connector 7, the female terminal 15 and the male terminal 13 are fitted and electrically connected. ing.

On the other hand, the waterproof cover 1 is integrally molded of soft synthetic rubber and, as shown in FIGS. 5 (a) and 5 (b), a rectangular engaging opening portion into which the female connector 7 is fitted. 17
And an electric wire housing portion 19 into which electric wires drawn out from the male connector 9 are bundled and drawn out. At the edge of the engagement opening 17, a seal portion 29 is bent and formed inward, and an end face 21 is formed. further,
A grip 23 is integrally formed on the outer side of the engagement opening 17.

In order to cover the fitting portion of the male connector 9 and the female connector 7 with such a waterproof cover 1, first, one side of the female connector 7 is inserted into one side 17a of the engaging opening 17. After pushing in (in the direction of arrow a), the gripping portion 23 is pinched and pulled outward (in the direction of arrow b), and the engagement opening 17 is widened and hooked on the other side 17b of the female connector 7. Then, as shown in FIG. 5B, the engagement opening 17 is engaged with the locking rib 11. As a result, the end surface 21 of the engagement opening 17 comes into close contact with the outer peripheral surface 8 of the female connector 7, the waterproof cover 1 is attached to the female connector 7, and the female connector 7 and the male connector 9 are connected. The mating part of is designed to be waterproof.

[0005]

By the way, when pushing one side of the female connector 7 into the one side 17a of the waterproof cover 1, the opening shape is maintained when the waterproof cover 1 is hard and rigid so that the female connector is opened. 7 can be easily pushed in, and the adhesion to the outer peripheral surface 8 of the female connector is strong, and high waterproof performance can be obtained. However, the other side 17b of the waterproof cover 1 is extended and pulled to the other side of the female connector 7. When it is hung, it is difficult to extend it and mounting workability is poor.

On the other hand, if the waterproof cover 1 is made of a soft body as a whole, it tends to expand, but this time, when the one side of the female connector 7 is pushed in, the shape of the opening is not constant, so it is difficult to push in.
Also, the adhesion to the outer peripheral surface of the female connector 7 becomes weaker,
It is not possible to obtain sufficient waterproof performance.

Therefore, if the workability of mounting the waterproof cover 1 on the connector 7 is prioritized, the waterproof performance is lowered, and if the workability of the waterproof cover 1 is prioritized, the workability is poor.

Therefore, it is an object of the present invention to provide a waterproof cover for an electrical connector which can improve the workability of mounting on the connector without lowering the waterproof performance.

[0009]

In order to achieve the above-mentioned object, the invention according to claim 1 has an engagement opening portion which can be fitted in close contact with a locking portion protruding outward from the outer peripheral surface of the electric connector. In a waterproof cover of an electric connector having, a push-in rigid body portion into which one side of the electric connector is pushed is formed on one side of the engaging opening portion, and a hooking extension portion hooked on the other side of the connector on the other side of the engaging opening portion. Is formed.

The invention according to claim 2 is the invention according to claims 1 and 2, characterized in that the indentation rigid body portion is a solid seal portion having an end surface that abuts on the outer peripheral surface of the electrical connector. There is.

The invention according to claim 3 is the invention according to claim 1, characterized in that the hook extension part is a seal part having a lightening part formed on the end face of the engagement opening part. .

[0012]

According to the invention of claim 1, after pushing one side of the electric connector into the pushing rigid body portion of the engaging opening, the hook extending portion is pulled to be hooked on the other side of the electric connector, thereby waterproofing. The cover is attached to the electrical connector.

In this case, since the pushing rigid body portion has rigidity, the shape of the engaging opening portion is maintained and one side of the female connector is easily pushed in, and the hook extension portion is easily extended. Easy to hook to the side. Therefore, the work of attaching the waterproof cover to the electric connector can be easily performed.

According to the second aspect of the present invention, when the electric connector is pushed into the pushing rigid body portion, the electric connector is solid and has rigidity, so that the shape of the engaging opening portion is maintained. The side can be pushed in easily.

According to the third aspect of the present invention, when the hook extension part is pulled, it is thinned out and the rigidity is locally set low. Therefore, it can be easily pulled and pulled to the other side of the electrical connector. The hanging extension can be easily hooked.

[0016]

EXAMPLES Examples of waterproof covers for electric connectors according to the present invention will be described below. 1 shows a waterproof cover 25.
Shows the electrical connector 3 to which the waterproof cover 25 is attached. The same components as those of the waterproof cover 1 and the electrical connector 3 shown in FIG. 5 are designated by the same reference numerals in the drawing, and duplicate description will be omitted.

As shown in FIGS. 1 and 2A, in the waterproof cover 25 of this embodiment, the pushing rigid body portion 31 into which the one side 7a of the female connector 7 is pushed into one side of the engaging opening portion 17 is provided.
Are formed. In addition, the hook extension part 3 on which the other side 7b of the female connector 7 is hooked on the other side of the engagement opening 17.
3 is formed.

The pushing rigid body portion 31 comprises a seal portion 29 provided at the opening edge portion of the engagement opening portion 17, and the seal portion 29 is in contact with the outer peripheral surface 8 of the female connector 7.
It is formed to be solid with 1. This indented rigid body part 3
1 has a sealing function by coming into close contact with the locking surface 11 a of the locking rib 11 and the outer peripheral surface 8 of the female connector 7. The pushing rigid body 31 is formed thick as a whole and has high rigidity, and the shape of the engagement opening 17 is maintained. Therefore, the one side 7a of the female connector 7 can be easily pushed into the pushing rigid body portion 31 side of the engagement opening portion 17.

Further, the hook extension 33 is shown in FIGS.
As shown in FIG. 5, the lightening portion 27 is formed so as to open on the end surface 21 of the engagement opening portion 17 and extend over substantially half the circumference of the engagement opening portion 17. By forming the lightening portion 27, the rigidity of the hooking extension portion 33 is set low, and by grasping the grip portion 23 and pulling it outward, the frontage of the engagement opening portion 17 can be easily widened. The hook extension part 33 can be easily hooked to the other side 7b of the female connector 7. In addition, the engagement opening 17
By forming the lightening portions 27 that open to the end surface 21 of the female connector 7, the end surfaces 21 on both sides of the lightening portion 27 are in close contact with the outer peripheral surface 8 of the female connector 7 and the inside of the hook extension portion 33 is engaged. It comes into close contact with the locking surface 11a of the stop rib 11 and has a high sealing function.

In order to attach the waterproof cover 1 to the female connector 7 and cover the fitting portion with the male connector 9, the female rigid body portion 31 of the engaging opening 17 is first fitted to the female connector 7. The one side 7a of the connector 7 is pushed in to bring the inside of the seal portion 29 into contact with the engagement surface 11a of the engagement rib 11, and as shown in FIG. 2B, the end surface 21 of the seal portion 29 is attached to the female connector. It is brought into close contact with the outer peripheral surface of 7.

At this time, since the rigidity of the pushing rigid body portion 31 is set to be high, the shape of the engaging opening portion 17 is maintained, and one side of the female connector 7 is placed in the engaging opening portion 17. It can be pushed in easily. In addition, the seal portion 29
Has a close contact with the locking surface 11a of the locking rib 11 and the outer peripheral surface 8 of the female connector 7, so that high sealing performance can be obtained.

Next, the grip 23 is picked up and the waterproof cover 1 is pulled outward to extend the hook extending portion 33. As a result, the opening of the engagement opening 17 becomes wider, and in this state, the female connector 7 is hooked on the other side to engage the seal portion 29 with the locking rib 11.

At this time, since the hooking extension portion 33 is set to have a low rigidity, it can be easily extended to widen the frontage of the engagement opening portion 17 and easily pulled to the female connector 7. It can be hung. Further, when the female connector 7 is hooked on the other side 7b, the seal portion 29 is in close contact with the locking surface 11a of the locking rib 11 and the outer peripheral surface 8 of the female connector 7 due to its own elastic force. Since it abuts, it has high sealing performance.

Therefore, the waterproof cover 25 of this embodiment can improve the workability of mounting on the female connector 7 without lowering the waterproof performance.

In the above embodiment, the lightening portion is
A hollow portion provided inside the seal portion 29 may be used, but the above-described shape that opens to the molding upper end surface 21 is preferable.

[0026]

As described above, according to the first aspect of the present invention, after pushing one side of the electric connector into the pushing rigid body portion on one side of the engaging opening, the hook extension portion on the other side is pulled. By hooking the electric connector on the other side, the waterproof cover can be easily attached to the electric connector, and the attaching workability can be improved. Further, the engaging opening engaged with the locking portion is in close contact with the locking portion and the outer peripheral surface of the electrical connector due to its own elastic force in both the pushing rigid body portion and the hooking extension portion, so that high sealing performance is obtained. You can get it.

According to the second aspect of the present invention, since the pushing rigid body portion is formed by the solid seal portion, the shape of the engaging opening portion can be maintained, and one side of the electric connector can be pushed easily. You can

According to the third aspect of the present invention, since the hook extending portion has the lightening portion formed on the end surface of the engaging opening, the rigidity can be set low and the extension can be easily performed. Therefore, it can be easily hooked to the other side of the electrical connector.

[Brief description of drawings]

FIG. 1 is a waterproof cover for an electric connector according to the present invention,
It is a perspective view which shows the electric connector with which this waterproof cover is mounted.

FIG. 2 is a waterproof cover for an electric connector according to the present invention,
Shows the electrical connector to which this waterproof cover is attached,
(A) is a sectional view showing a state before the waterproof cover is attached,
(B) is sectional drawing which shows the state which attached the waterproof cover to the electric connector.

3 is a cross-sectional view showing the waterproof cover of the electrical connector according to the present invention, taken along line III-III in FIG. 1. FIG.

FIG. 4 is a perspective view showing a conventional waterproof cover and an electric connector.

5A and 5B show a conventional waterproof cover and an electric connector to which the waterproof cover is attached, FIG. 5A is a cross-sectional view showing a state before the waterproof cover is attached to the electric connector, and FIG. It is sectional drawing which shows the state mounted | worn with the connector.

[Explanation of symbols]

 3 Electric Connector 11 Locking Rib 17 Engagement Opening 25 Waterproof Cover 27 Lightening Part 29 Sealing Part 31 Push-in Rigid Part 33 Hook Extension

Claims (3)

[Claims] 1. A waterproof cover for an electrical connector having an engagement opening that can be fitted in a sealed state to a locking portion protruding outward from the outer peripheral surface of the electrical connector, wherein the engagement opening is provided on one side of the engagement opening. A waterproof cover for an electric connector, characterized in that a push-in rigid body portion into which one side of the electric connector is pushed is formed, and a hook extending portion hooked to the other side of the electric connector is formed on the other side of the engagement opening. 2. The waterproof cover for an electrical connector according to claim 1, wherein the pushing rigid body portion is a solid seal portion having an end surface that abuts an outer peripheral surface of the electrical connector. 3. The electric connector according to claim 1, wherein the hooking extension portion is a seal portion having a lightening portion formed on an end surface of the engagement opening portion. Waterproof cover.