JP2021086690A - Connector structure - Google Patents

Abstract

To provide a connector structure in which airtightness around a connection between a cable and a connector is secured.SOLUTION: The present invention relates to a connector structure 1 for a cover housing 30 which covers a branch part of a cable C and a connector housing 10 in which a contact 60 mounted to an end of a wire W is accommodated. The cover housing comprises inside a cable seal 410 sealing a gap between a peripheral surface of the cable and an inner peripheral surface corresponding to the peripheral surface, and the cover housing 30 comprises a locking part 313 for locking to the connector housing. The connector housing 10 comprises a locked part 111 to be locked to the locking part. The cover housing includes a wire cover part 310 at a front side and a cable cover part 320 at a rear side, and the wire cover part includes a fitting space 311 inside. The connector housing includes a fitting part at a rear side and a main body part 110 at a front side, a fitting part 120 is accommodated in the fitting space, and a fitting seal 400 for sealing a gap between the peripheral surface of the fitting part and the inner peripheral surface of the fitting space is provided.SELECTED DRAWING: Figure 2

Description

The present invention relates to a connector structure of a cover housing and a connector housing that covers an electric wire taken out from a connector.

As a technique in this field, the technique described in Patent Document 1 is known. The present invention provides a connector connection structure for a cable having excellent workability and sealing property, and a plurality of electric wires 41 and 42 exposed from the end of the cable 40 are aligned at the terminal pitch of the connector. This is an invention relating to a connection structure in which a molded portion is integrally molded in this state, and this and a cable sealing portion 60 are integrally formed.

Japanese Unexamined Patent Publication No. 2002-25651

According to this technology, a seal portion 60 is provided around the branch portion where the electric wire is exposed from the cable so as to cover the periphery of the cable end portion, and the electric wire is fixed at the terminal pitch in front of the sealing portion 60 (in the direction in which the connector is assembled). The mold part is mounted. As a result, it is possible to obtain a connector connection structure that has both airtightness around the branch portion and ease of connecting electric wires.
However, the means for sealing the gap between the insulating housing 20 to be assembled in front of the sealing member 30 and the peripheral surface of the electric wire is not shown, and it is predicted that the airtightness of this portion is not sufficiently secured, and the inside of the connector. There is a concern that foreign matter such as liquid may enter the housing.

The present invention has been made in view of the above-mentioned problems, and includes a cable in which a plurality of electric wires branch at an end, a cover housing in which airtightness is ensured around a connection portion with a connector, and a connector housing. It is intended to provide a connector structure.

The connector structure between the cover housing and the connector housing of the present invention includes (1) a cover housing that covers a branch portion in which a plurality of electric wires are branched from the end portion of the cable, and a contact that attaches to the end portion of the electric wire. The cover housing has a connector structure with a connector housing housed inside, and the cover housing is provided with a cable seal that seals a gap between the peripheral surface of the cable and the inner peripheral surface corresponding to the peripheral surface. Provided a locking portion for locking to the connector housing in the assembled state on the extending portion extending from the side surface or the side surface in the direction of the connector housing, and the connector housing is locked to the locking portion in the assembled state. It is characterized in that a locked portion for this purpose is provided on the extending portion or the side surface extending from the side surface in the direction of the cover housing.

According to the present invention, the entire contact attached to the tip of the electric wire is covered by the connector housing, while the branch portion between the cable and the electric wire is covered by the cover housing. Further, the connector housing and the cover housing have an assembly structure with each other, and are integrally configured in the assembled state, and the cover housing has a cable seal inside. As a result, a cover housing in which airtightness around the connection portion between the cable and the connector is ensured, and a connector structure of the connector housing can be obtained.

Preferably, the connector structure between the cover housing and the connector housing of the present invention is such that (2) the cover housing according to (1) above includes an electric wire cover portion in the front and a cable cover portion in the rear, and the electric wire cover portion. Is provided with a fitting space inside, the connector housing is provided with a tubular fitting portion at the rear and a main body portion at the front, and the fitting portion is accommodated in the fitting space in the assembled state, and in the assembled state. It is characterized in that a fitting seal for sealing a gap between the peripheral surface of the fitting portion and the inner peripheral surface of the fitting space is provided in the fitting portion or the fitting space.

According to the present invention, the fitting portion has an assembly structure in which the fitting portion fits into the fitting space, and one of them is provided with a fitting seal for sealing the gap between the two in the fitted state. As a result, a connector structure of the cover housing and the connector housing in which the airtightness of the joint portion (fitting portion) between the cover housing and the connector housing is ensured can be obtained.

Preferably, the connector structure between the cover housing and the connector housing of the present invention is such that the connector housing according to (3) above (2) has a storage space for accommodating the electric wire inside the fitting portion and the above. A housing space for accommodating a contact attached to the tip of the electric wire is provided inside the main body, and a gap between the inner peripheral surface of the accommodating space for accommodating the electric wire and the peripheral surface of the corresponding electric wire is sealed in the assembled state. It is characterized by having an electric wire seal for housing.

According to the present invention, since the connector housing is provided with an electric wire seal for sealing the gap between the connector housing and the electric wire, a cover housing in which the airtightness of the electric wire outlet of the connector is ensured and a connector structure between the connector housing can be obtained. ..

Preferably, the connector structure between the cover housing of the present invention and the connector housing is such that (4) the cover housing according to any one of (1) to (3) above moves in the front-rear direction of the cable in the assembled state. It is characterized by being provided with a fixture for regulating the above.

According to the present invention, since the cover housing and the cable are positioned and fixed by the fixture, there is no possibility that the cable moves by an careless force and causes a defect in the connection portion with the contact, the electric wire seal portion, and the cable seal. A connector structure of a cover housing and a connector housing can be obtained.

FIG. 1 is an external perspective view of a connector structure of the cover housing and the connector housing according to the present embodiment. FIG. 2 is an exploded perspective view of the connector structure of the cover housing and the connector housing. FIG. 3 is a cross-sectional view taken along the line III-III of FIG. FIG. 4 is an assembly process diagram of a connector structure of the cover housing and the connector housing according to the present embodiment.

Although the embodiments of the present invention will be described with reference to the accompanying drawings, the technical scope of the present invention is not limitedly interpreted by these embodiments, and the components are modified without departing from the gist of the invention. It can be carried out. FIG. 1 is an external perspective view of a connector structure of the cover housing and the connector housing according to the present embodiment. FIG. 2 is an exploded perspective view of the connector structure of the cover housing and the connector housing. FIG. 3 is a cross-sectional view taken along the line III-III of FIG. FIG. 4 is an assembly process diagram of a connector structure of the cover housing and the connector housing according to the present embodiment. In principle, the direction instructions in the explanation follow the direction definition described in the target drawing.

As shown in FIGS. 1 and 2, the connector structure 1 of the present embodiment includes a connector portion 10a and a cover portion 30a. The connector portion 10a includes a connector housing 10 and a contact 60. The connector housing 10 includes a front cover 13, a retainer 14, and an inner seal 15.
The cover portion 30a covers the vicinity of the base of the cable C taken out from the rear of the connector housing 10 to secure a function of suppressing inadvertent movement of the cable due to an external force and an airtightness of the electric wire W take-out port behind the connector housing 10. It also has functions. The cover portion 30a includes a cover housing 30.

As shown in FIGS. 2 and 3, the cover housing 30 includes an electric wire cover portion 310 and a cable cover portion 320. The electric wire cover portion 310 is provided with a fitting space 311 having an elliptical cross section, and the cable cover portion 320 is provided with a cable seal holding portion 321 having a substantially circular cross section. The fitting space 311 and the cable seal holding portion 321 communicate with each other at the boundary portion thereof. The front surface of the fitting space 311 and the rear surface of the cable seal holding portion 321 are open. As described above, the inside of the cover housing 30 is hollow along the axial direction.

As shown in FIGS. 1 to 3, the electric wire cover portion 310 is provided with a pair of locking portions 313, 313 extending forward from the left and right side surfaces. A locking hole is formed in the center of the locking portion 313.

As shown in FIG. 3, the cable cover portion 320 is provided with a fixing portion 325 at the rear end portion. The fixing portion 325 is a device for fixing the cover housing 30 in the assembled state and the cable C at a predetermined position. The device may function independently, or may use, for example, a tie wrap as a separate member as the fixture 50.

As shown in FIGS. 2 and 3, the connector housing 10 includes a main body portion 110 and a fitting portion 120. The main body 110 is provided with a contact accommodating space 112, and the fitting portion 120 is provided with an electric wire accommodating space 122. The contact accommodating space 112 and the electric wire accommodating space 122 communicate with each other at the boundary portion thereof. The front surface of the contact accommodation space 112 is opened, and the front cover 13 is attached from the front. An inner seal 15 is attached to the rear end of the contact accommodating space 112 from the front. Further, a retainer 14 is attached from an opening provided on the lower surface of the main body 110, and the attached contact 60 is held at a predetermined position. The rear surface of the electric wire accommodating space 122 is open. A pair of locked portions 111, 111 are provided at the rear ends of the left and right side surfaces of the main body 110. The locked portion 111 is provided with a protrusion having a taper on the rear surface side.

As shown in FIG. 3, the non-conductive outer skin of the tip of the cable C is peeled off, and two electric wires W are exposed from the inside. The electric wire W has a conductor portion in the center and an insulating coating on the outer periphery. A contact 60 is connected to the end of the electric wire W, and the contact 60 is held in the contact accommodating space 112 of the connector housing 10. Of course, there may be three or more electric wires W.

As shown in FIGS. 2 and 3, the electric wire W branched from the end of the cable C has an electric wire seal 420 mounted on its peripheral surface. The mounting position of the electric wire seal 420 is a portion where two electric wires W extend in parallel slightly forward from the branch portion. The electric wire seal 420 is provided with a hole for holding the electric wire W from the surroundings. The diameter of the hole is smaller than the outer diameter of the wire W and is in close contact with the peripheral surface of the wire W mounted in the hole. Two projecting portions are continuously formed on the outer peripheral surface of the electric wire seal 420 in the circumferential direction. When the electric wire seal 420 is attached to the electric wire accommodating space 122, the two protruding portions abut on the inner peripheral surface of the electric wire accommodating space 122 in a manner in which the tip is deformed. As a result, the airtightness on the rear surface side of the connector housing 10 from which the electric wire W is taken out is ensured.

When the connector housing 10 and the cover housing 30 are fitted (assembled), the fitting portion 120 fits in the fitting space 311 as shown in FIG. A fitting seal 400 is mounted between the peripheral surface of the fitting portion 120 and the inner peripheral surface of the fitting space 311 to close the gap between them. Further, at the fitting position, the locking portion 313 of the cover housing 30 is locked to the locked portion 111 of the connector housing 10. As a result, the fitted state (assembled state) of the connector housing 10 and the cover housing 30 is maintained. Further, the cover housing 30 and the cable C are fixed by the fixture 50 in the fitted state (assembled state), and the movement in the front-rear direction is mainly restricted.

<Airtightness>
As shown in FIG. 3, the connector portion 10a has the cover housing 30 mounted rearward in the fitted state (assembled state), and the airtightness on the rear side from which the electric wire is taken out is ensured. The gap between the cable seal holding portion 321 of the cover housing 30 and the cable C is closed by the cable seal 410. Further, in the connection portion between the cover housing 30 and the connector housing 10, the fitting seal 400 is attached to the gap between the fitting portion 120 and the fitting space 311 to close the gap. Further, in the electric wire accommodating space 122 of the connector housing 10, the gap between the electric wire accommodating space 122 and the electric wire W is closed by the electric wire seal 420. In this way, the gaps generated in the connecting portions between the members are all closed with the sealing materials 400, 410, and 420. In this way, the airtightness of the connector structure 1 is ensured, and foreign matter such as liquid is suppressed from entering the inside.

<Assembly>
The assembly of the connector structure 1 will be described according to the process.
In the first step, the cable C is incorporated into the cover housing 30. The cable C is inserted into the internal space of the cover housing 30 (cable seal holding portion 321 and fitting space 311).
In the second step, the outer skin of the cable C end is peeled off to expose the two electric wires W. Temporarily hold the two electric wires W in a posture extending in parallel.
In the third step, the cable seal 410 is attached to the cable C. Attach the cable seal 410 to the cable C side from the wire W side branched into two. The mounting position is the end of the cable where the wire W is exposed.

In the fourth step, the contact 60 and the electric wire seal 420 are attached to the end of the electric wire W. The outer skin of the end portion of the electric wire W is peeled off to expose the conductor portion, the electric wire seal is attached in a predetermined position, and the contact 60 is crimp-connected.
In the fifth step, the contact 60 is attached to the connector housing 10. The contact 60 connected to the end of the electric wire W is attached from the rear surface of the connector housing 10. The electric wire seal 420 is attached to the electric wire accommodating space 122.
In the sixth step, the cover housing 30 is attached to the connector housing 10. A fitting seal 400 is mounted in the gap between the fitting portion 120 and the fitting space 311 (in the present embodiment, the fitting seal 400 is previously mounted on the fitting portion 120 of the connector housing 10). The locking portion 313 of the cover housing 30 and the locked portion 111 of the connector housing 10 are locked to maintain the fitted state. In the fitted state, the fixing portion 325 provided on the cover housing 30 and the cable C are fixed with a tie wrap (fixing tool 50).

<Effect>
A connector structure 1 having a function of positioning and holding the cover housing 30 that covers the branch portion between the cable C and the electric wire W and the connector housing 10 can be obtained.
-Since the cover housing 30 provided with the fixing portion 325 that regulates the movement of the cable C is provided, the connector that does not have an electromechanical effect on the connection state of the contact 60 even if the cable C is inadvertently loaded. Structure 1 is obtained.
-A cover housing 30 that can be connected to the connector housing 10 and whose airtightness of the connecting portion is ensured can be obtained.
-A connector structure 1 having a cover housing 30 in which the airtightness of the rear surface from which the electric wire W of the connector housing 10 is taken out is ensured can be obtained.
-At the branch portion between the cable C and the electric wire W, the entrance path for foreign matter such as water is blocked by the cable seal 410, the fitting seal 400, and the electric wire seal 420, so that a highly airtight connector structure 1 can be obtained. ..
A connector structure 1 in which the cover housing 30 also has the function of a harness cover can be obtained.
The technical scope of the present invention is not construed as being limited to the embodiments described above. The components can be changed without departing from the gist of the invention.

1 Connector structure 10 Connector housing 10a Connector part 110 Main body part 111 Locked part 112 Contact accommodating space 120 Fitting part 122 Electric wire accommodating space 13 Front cover 14 Retainer 15 Inner seal 30 Cover housing 30a Cover part 310 Electric wire cover part 311 Mating Space 313 Locking part 320 Cable cover part 321 Cable seal holding part 325 Fixing part 400 Fitting seal 410 Cable seal 420 Electric wire seal 50 Fixing tool 60 Contact
C cable
W electric wire

Claims (4)

It is a connector structure of a cover housing that covers a branch portion in which a plurality of electric wires are branched from the end portion of the cable and a connector housing that internally accommodates a contact attached to the end portion of the electric wire.
The cover housing is internally provided with a cable seal that seals a gap between the peripheral surface of the cable and the inner peripheral surface corresponding to the peripheral surface.
The cover housing is provided with a locking portion for locking to the connector housing in an assembled state on a side surface or an extending portion extending from the side surface in the direction of the connector housing.
The connector housing is characterized in that a locked portion for locking to the locking portion is provided on the extending portion or the side surface extending from the side surface in the direction of the cover housing in the assembled state. Connector structure with. The cover housing according to claim 1 includes an electric wire cover portion in the front and a cable cover portion in the rear, and the electric wire cover portion has a fitting space inside.
The connector housing has a tubular fitting portion at the rear and a main body portion at the front.
In the assembled state, the fitting portion is housed in the fitting space, and the fitting portion is accommodated in the fitting space.
A cover housing characterized in that a fitting seal for sealing a gap between the peripheral surface of the fitting portion and the inner peripheral surface of the fitting space is provided in the fitting portion or the fitting space in the assembled state. And the connector structure with the connector housing. The connector housing according to claim 2 is provided with a storage space for accommodating the electric wire inside the fitting portion and an accommodating space for accommodating a contact attached to the tip of the electric wire inside the main body portion.
A connector structure of a cover housing and a connector housing, which is characterized in that an electric wire seal for sealing a gap between an inner peripheral surface of an accommodation space for accommodating the electric wire in an assembled state and a peripheral surface of a corresponding electric wire is provided. The cover housing according to claim 1 to 3, is a connector structure of a cover housing and a connector housing, characterized in that the cover housing is provided with a fixture for restricting the movement of the cable in the front-rear direction in an assembled state.

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