JPH06208863A - Resin filling type connector - Google Patents

Abstract

PURPOSE:To prevent the leak from a wire connection part and the providing an air vent hole for the fluid type resin material in a rubber plug, and discharging bubble. CONSTITUTION:A partitioning wall 10 is provided integrally with an intermediate part of the inside of a cylindrical peripheral wall 9, and the rear side thereof is formed with an opening hole 11 for filling of the resin material, and plural terminal housing units 3 respectively having a cylindrical space 13a corresponding to a joint terminal 5 are provided inside of the partitioning wall 10 with an equal space. Plural wire insertion cylindrical parts 2, which have a small diameter insertion space 2c communicated with a housing part 3 respectively, are projected concentrically in the front side of the partitioning wall 10, and the periphery of the cylinder part 2 and the inside of the peripheral wall 9 are formed with a space 13. A rubber plug engagement part 14 is formed inside of the space 13 opposite to the tip 2a of the cylinder part 2. A rubber plug 7 is arranged opposite to the tip 2a of the cylinder part 2, and a wire insertion tight hole 16 is provided through in the plate thickness direction, and an air vent hole 17 is provided. Bubble 18 is discharged from an air vent groove 21 to the air vent hole 17, and the leak from the wire connection part and the deterioration of oil sealability of the resin material 8 are eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector directly attached to a hydraulic device of an automobile, for example, in which a wire connecting the hydraulic device and the outside is sealed with a rubber plug in a connector housing and fixed by insulation with a resin material. The present invention relates to a resin-filled connector.

[0002]

2. Description of the Related Art FIG. 5 is a longitudinal sectional view showing a conventional resin-filled connector disclosed in Japanese Patent Laid-Open No. 58-39216. The connector 25 has a substantially cylindrical connector housing 29 made of synthetic resin, which is inserted and fixed in the through hole 27 of the hydraulic equipment main body 26 via a seal ring 28, and is inserted into the connector housing 29 to form a tubular joint. The electric wire 31 caulked and connected by the terminal 30, the rubber plugs 32 and 33 for inserting and adhering the electric wire 31 and closing the front and rear openings of the connector housing 29, and the rubber plugs 32 and 33 are filled between the rubber plugs 32 and 33, and the joint terminal It is composed of a resin material 34 such as epoxy that insulates and fixes the connecting portion 36 between the wire 30 and the electric wire 31.

Oil rise from the inside of the hydraulic equipment 26a is prevented by the front rubber stopper 32 and the resin material 34, and the rear rubber stopper 33 prevents rainwater and the like from entering the housing 29. However, the conventional resin-filled connector 25 described above is used.
In this case, when one of the rubber plugs 32 is fitted and a fluid resin material 34 is filled from the other, bubbles generated on the lower side of the resin material 34 having a large specific gravity are on the upper side (atmosphere side). However, there is a problem in that air bubbles 35 remain in the solidified resin material 34 without being completely removed, leading to leakage from the electric wire connection portion 36 and deterioration of the oil sealability of the resin material 34.

[0004]

SUMMARY OF THE INVENTION In view of the above points, the present invention is a resin-filled type capable of preventing leakage from a wire connecting portion and deterioration of oil sealability of a resin material without leaving bubbles in the resin material. It is intended to provide a connector.

[0005]

To achieve the above object, the present invention has a connector housing, an electric wire accommodated in the connector housing in a state where a conductor is exposed, and an electric wire insertion contact hole. In a resin-filled connector configured by a rubber plug fitted into the connector housing and a resin material filled in the connector housing and insulatingly fixing an exposed conductor portion of the electric wire, the rubber plug has a fluid-like shape. The structure is basically formed by forming an air vent hole for the resin material.

Then, the connector housing is provided with an insertion tube portion for the electric wire, and the tip of the insertion tube portion can be brought into contact with the rubber plug, or the rubber plug is attached to the tip of the insertion tube portion. It is also possible to provide a structure in which opposed concave grooves and air vent grooves that connect the concave grooves and the air vent holes are provided. Further, a structure in which a tapered slant portion is provided in the opening of the connector housing on the resin material injection side and continues to the exposed conductor accommodating portion communicating with the insertion tube portion is also effective.

[0007]

[Function] The connector housing is filled with a resin material from above with the rubber plug facing down. The air bubbles accumulated on the rubber stopper flow out to the outside through the air vent hole and are completely filled with the resin material.
Further, if the insertion tube portion is provided in the housing, the bubbles escape from the tip of the insertion tube portion to the air vent hole through the space around the insertion tube portion. Further, by providing the concave groove and the air bleeding groove, the bubbles are smoothly and surely discharged from the concave groove to the air bleeding hole through the air bleeding groove. In addition, when the tapered portion is formed in the opening of the housing, the resin material is guided by the tapered slant portion and smoothly flows into the insertion tubular portion, and bubbles are less likely to be generated.

[0008]

1 is a vertical sectional view showing an embodiment of a resin-filled connector according to the present invention. The resin-filled connector 1 includes a connector housing 4 made of synthetic resin, which has a plurality of electric wire insertion tube portions 2 inside and a joint terminal accommodating portion (exposed conductor accommodating portion) 3 following the insertion tube portion 2, and the insertion portion. Tube 2
The electric wire 6 which is inserted into the terminal accommodating portion 3 to connect the exposed conductor portion 6a to the joint terminal 5 and the distal end 2a of the insertion tubular portion 2 are fitted in the connector housing 4 The rubber plug 7 and a resin material 8 such as epoxy filled in the connector housing 4 from the side opposite to the rubber plug 7 are generally formed. The joint terminal 5 may be formed by crimping the exposed conductor portion 6a, which is stripped in the electric wire 6, for the purpose of positioning and locking.

As shown in the perspective view of FIG. 2, the connector housing 4 is integrally provided with a partition wall 10 at an inner middle portion of a cylindrical peripheral wall 9, and a partition wall 10 has an opening for injection of a resin material at a rear side thereof. A plurality of terminal accommodating portions 3 having holes 11 formed therein and having a cylindrical space 3a for the joint terminal 5 are equidistantly provided in the partition wall 10, and the accommodating portion 3 is gently followed in the opening 11. A tapered slant portion 12 is formed, and a plurality of electric wire insertion tube portions 2 having a small-diameter insertion space 2c communicating with the housing portion 3 are provided on the front side of the partition wall 10 in a concentric manner so as to equally project. A space 13 is formed around the insertion tube portion 2 and inside the peripheral wall 9, and a rubber plug fitting portion 14 is formed in the space 13 facing the tip 2a of the insertion tube portion 2. To do.

Here, the tapered slanted portion 12 formed in the opening 11 for injecting the resin material is smoothly connected to the opening tapered surface 3b of the terminal accommodating portion 3 and the fluid resin is accommodated in the accommodating portion 3. Let the material 8 flow smoothly. Large-diameter storage part 3
And the small-diameter insertion tube portion 2 are connected to each other by the tapered sloped surface 15 so that the resin material can smoothly flow into the housing portion 3. Thereby, bubbles are less likely to be generated in the resin material 8.

As shown in FIG. 1, a rubber plug 7 is provided at the tip 2a of the insertion tube 2 so as to face it. The rubber stopper 7 is formed in a thin plate columnar shape, and a plurality of electric wire insertion contact holes 16 are concentrically provided so as to penetrate in the plate thickness direction at equal intervals, and an air vent hole 17 which is a feature of the present invention is provided in the center. Set up. The air vent hole 17 communicates with the space 13 inside the housing 4, and when the resin material 8 is filled with the rubber plug 7 facing down, the air bubbles 18 accumulated under the resin material 8 are inserted into the tubular portion. 2 tip 2a
To the outside through the space 13 through the air vent hole 17. A tapered chamfer 2b is formed on the inner surface of the tip of the insertion tube 2, and the tip 2a of the insertion tube is slightly in contact with the rubber plug 7 so that a slight gap is formed between the rubber plug 7 and the bubble 18 to escape. have. This gap is sealed by the solidified resin material 8.

FIG. 3 is a perspective view showing another embodiment of the rubber plug, and FIG. 4 is a vertical cross-sectional view showing the same state when the resin material is filled. The rubber plug 19 is provided with a circular recessed groove 20 at the opening edge of the electric wire insertion contact hole 16 'and an air vent groove 21 which connects the recess groove 20 and the central air vent hole 17'. It is characterized by The concave groove 20 is set to have a diameter substantially the same as the outer diameter of the insertion tube portion 2 ', and as shown in FIG. 4, the air bubbles 18 accumulated below are guided to the air bleeding groove 21 and the resin material 8'is accumulated to store the housing 4'. Inserting cylinder part 2'and rubber stopper 1
Improves adhesion with 9. The bubbles 18 are discharged from the air bleed groove 21 to the air bleed hole 17 '. The air vent hole 17 '
Also releases high pressure air generated in the space 13 'when the resin material 8'is left in a high temperature after the completion of filling, thereby preventing backflow of air into the housing 4'.

[0013]

As described above, according to the present invention, when the resin material is filled in the connector housing, the air bubbles are discharged to the outside from the air vent hole of the rubber plug, so that the air bubbles remain in the resin material. Therefore, problems such as electrical leakage from the exposed conductor portion and deterioration of oil sealability are eliminated. Further, by forming the tapered slanted portion in the opening on the resin injection side of the connector housing, the resin material smoothly flows into the wire insertion tube portion, and the generation of bubbles is reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a resin-filled connector according to the present invention.

FIG. 2 is a perspective view showing a connector housing of the same.

FIG. 3 is a perspective view showing another embodiment of the rubber stopper.

4 is a vertical cross-sectional view showing another embodiment of the resin-filled connector using the rubber plug of FIG.

FIG. 5 is a vertical sectional view showing a conventional example.

[Explanation of symbols]

 1 resin-filled connector 2, 2'insertion cylinder part 3 terminal accommodating part (exposed conductor accommodating part) 4, 4'connector housing 5 joint terminal 6 electric wire 6a exposed conductor part 7,19 rubber stopper 8,8 'resin material 11 open Hole 12 Tapered sloping part 16, 16 'Wire insertion close contact hole 17, 17' Air bleed hole 20 Recessed groove 21 Air bleed groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhisa Ishizaki 206-1 Nunobikibara, Hara-cho, Haibara-gun, Shizuoka Prefecture Yazaki Parts Co., Ltd. Within the corporation

Claims (4)

[Claims] 1. A connector housing, an electric wire accommodated in a state where a conductor is exposed in the connector housing, a rubber plug having an electric wire insertion and fitting hole and fitted into the connector housing, and a connector housing inside the connector housing. A resin-filled connector that is filled with a resin material that insulates and fixes the exposed conductor portion of the electric wire, wherein the rubber plug has an air vent hole penetrating the fluid resin material. Resin-filled type connector. 2. The resin-filled connector according to claim 1, wherein the connector housing is provided with an insertion tube portion for the electric wire, and a tip of the insertion tube portion can abut the rubber plug. 3. The resin filling according to claim 2, wherein the rubber plug is provided with a groove facing the tip of the insertion tube and an air bleed groove communicating the groove with the air bleed hole. Expression connector. 4. The resin filling according to claim 2, wherein a tapered slanted portion is formed in the opening of the connector housing on the resin material injection side, the tapered slanted portion continuing to the exposed conductor accommodating portion communicating with the insertion tube portion. Expression connector.