JP2012028138A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability of installation of a cover on a housing.SOLUTION: A connector 1 includes a housing 5 in which terminal housing chambers 19 each housing a plurality of terminal metal fittings 3 each having a terminal 11 to be connected to a matching terminal and an electric wire connection part 13 are provided successively, and a cover 9 engaged with one end of the housing 5 and bundling electric wires led out of the housing 5. The cover 9 has a U-shaped cross section, and grooves 29 are formed in at least parts of inner surfaces of opposite flat plate parts 25 of the U shape on sides of an opening end 27 along an opening edge. A slit 33 into which the opening-end-27 side of the cover 9 is inserted is formed in an outer wall 31 along one end part of the housing 5. A protrusion 35 fitted in the groove 29 is formed on an inner surface of the slit 33, and the protrusion 35 formed in the slit 33 is formed at a position where the opening end 27 abuts against rear ends of the terminal metal fittings 3 in a state in which the cover 9 is inserted into the slit 33.

Description

  The present invention relates to a connector, and more particularly, to a technique for retaining and locking a terminal fitting housed in a housing by a cover attached to the housing.

  For example, in Patent Document 1, a plurality of terminal fittings each having a terminal connected to a mating terminal and an electric wire connecting part are accommodated in a terminal accommodating chamber formed in the housing, and the electric wire side end of the housing is connected to one end. A connector has been proposed in which a cover is attached to a housing by being inserted into a closed cylindrical cover, and the electric wire drawn out from the housing is bent to draw out the electric wire from an opening formed on the side surface of the cover. In particular, in the connector of the same document, a columnar locking portion corresponding to each terminal accommodating chamber is erected on the closed surface in the cover, and when the housing is mounted on the cover, each locking portion is connected to each terminal accommodating chamber. The terminal fitting is prevented from coming out of the terminal accommodating chamber by being inserted into the terminal and abutting against the rear end of the terminal fitting.

JP-A-7-153521

  However, when the cover is mounted on the housing, the connector of Patent Document 1 has a plurality of drawn wires at the end of the housing on the electric wire side. There is a problem that the locking portion of the cover cannot be inserted into the chamber, and the workability of attaching the cover to the housing is poor.

  The problem to be solved by the present invention is to improve the workability of mounting a cover on a housing.

  In order to solve the above problems, the present invention provides a housing in which a terminal connected to a mating terminal and a plurality of terminal fittings having a wire connecting portion, and a terminal accommodating chamber in which the plurality of terminal fittings are respectively accommodated. And a cover that is engaged with one end of the housing and bundles the wires drawn from the housing, the cover has a substantially U-shaped or U-shaped cross section. A groove is formed along the opening edge on at least a part of the inner surface of the opening side of the plate-shaped opposing flat plate portion, and the housing is formed with a slit into which the opening end side of the cover is inserted in the outer wall along one end portion. A protrusion that fits into the groove of the cover is formed on the inner surface of the slit, and the protrusion formed on the slit is in contact with the rear end of the terminal fitting while the cover is inserted into the slit. Formed in position And wherein the Rukoto.

  According to this, the cover is inserted into the slit of the housing along the opening edge of the cover, the electric wire drawn out from the housing is inserted into the opening of the cover and bundled, and the opening end of the cover is connected to the rear end of the terminal fitting. The cover is attached to the housing by contact with the groove of the cover and the protrusion of the housing. In other words, since the terminal fitting is prevented from coming off and locked at the end face of the opening into which the electric wire is inserted, the cover can be attached to the housing without being obstructed by the electric wire, and workability can be improved.

  In this case, a convex part can be formed in the outer surface of the flat end part of a cover at the opening end side, and the recessed part which can latch a convex part can be formed in the inner surface of a slit. According to this, since the convex portion of the cover can be locked to the concave portion of the housing and the cover can be fixed, it is possible to prevent the open end of the cover from coming out of the slit of the housing due to an external force applied to the connector or the electric wire.

  According to the present invention, the workability of mounting the cover on the housing can be improved.

It is a perspective view which shows the connector of one Embodiment of this invention. It is an exploded view of the connector of FIG. It is sectional drawing which shows the state which the cover contact | abutted to the terminal metal fitting of the connector of FIG. It is a perspective view which shows the insertion direction of the cover of the connector of FIG. It is sectional drawing which shows the latching state of the convex part and recessed part of the connector of FIG. It is the perspective view which changed the bending direction of the electric wire of the connector of FIG.

  Hereinafter, the present invention will be described based on embodiments. As shown in FIGS. 1 to 3, the connector 1 according to the present embodiment bundles a housing 5 in which a plurality of terminal fittings 3 are accommodated and an electric wire 7 that is engaged with one end of the housing 5 and drawn out from the housing 5. A cover 9 is provided. The terminal fitting 3 includes a terminal, for example, a female terminal 11 that is electrically connected to the counterpart terminal. The female terminal 11 is provided with a wire connection portion 13 to which the wire 7 is electrically connected. The electric wire connection part 13 is formed by the crimping | compression-bonding part 15 which crimps | bonds the core wire of the electric wire 7, and the crimping | compression-bonding part 17 which crimps | bonds the insulation coating part of the electric wire 7, for example.

  In the housing 5 that accommodates the terminal fittings 3, for example, two stages of terminal accommodating chambers 19 that are provided in correspondence with the respective terminal fittings 3 are formed. Each terminal accommodating chamber 19 is formed with an opening 21 into which a male terminal to be connected can be inserted. A locking lance 23 is formed in each terminal accommodating chamber 19 to abut against the rear end of the female terminal 11 and restrict the escape of the female terminal 11. The locking lance 23 is deformed to the outside of the terminal accommodating chamber 19 by the insertion force of the terminal fitting 3, and returns to its original position by the elastic force when the female terminal 11 passes and contacts the rear end of the female terminal 11. It has become. One end of the housing 5 is engaged with a cover 9 that bundles the electric wires 7 drawn from the housing 5.

  Next, the characteristic configuration of the present invention will be described. The cover 9 has a U-shaped cross section, and a groove 29 is formed along the opening edge on a part of the inner surface of the U-shaped opposing flat plate portion 25 on the opening end 27 side. The cover 9 may have a substantially U-shaped cross section. A convex portion 28 is formed on the outer surface of the opening end 27. On the other hand, a slit 33 into which the opening end 27 side of the cover 9 is inserted is formed in the outer wall 31 along the end portion with which the cover 9 of the housing 5 is engaged. On the inner surface of the slit 33, a protrusion 35 that fits into the groove 29 of the cover 9 is formed. The protrusion 35 is formed at a position where the opening end 27 of the cover 9 contacts the rear end of the terminal fitting 3 in a state where the cover 9 is inserted into the slit 33. Although not shown, a slit into which the opening end 27 side of the cover 9 is inserted is formed on the outer wall facing the outer wall 31 of the housing 5, and a concave portion 39 that can lock the convex portion 28 is formed in the slit. Is formed.

  The assembly work of the connector 1 configured as described above will be described. A plurality of terminal fittings 3 connected to the electric wires 7 are inserted and accommodated in the terminal accommodating chamber 19 of the connector 1. Thereby, the latching lance 23 contacts the rear end of each female terminal 11, and the escape of the terminal fitting 3 is restricted. In this state, as shown in FIG. 4, the end of the cover 9 on the open end 27 side of the cover 9 is inserted into the slit 33 of the housing 5 in the direction of the arrow 37. Thereby, the end of the opening end 27 is inserted into the slit 33 along the opening end 27 of the cover 9. At this time, the electric wires 7 are accommodated in the cover 9 while being bent, and the electric wires 7 are bundled by the cover 9. Then, the opening end 27 of the cover 9 is fitted with a protrusion 35 formed so as to abut on the rear end of the terminal fitting 3, for example, the rear end surface of the crimping portion 17 for crimping the insulating coating portion of the electric wire 7. Further, the convex portion 28 of the cover 9 advances while elastically deforming and pushing the slit 33, and is fitted into the concave portion 39, so that the slit 33 returns to the original shape, and as shown in FIG. It is locked to. As a result, the movement of the cover 9 in the direction in which the terminal fitting 3 comes out is restricted by the groove 29 and the protrusion 35, and the movement in the direction in which the cover 9 comes off is restricted by the convex portion 28 and the concave portion 39, and the housing 5 A cover 9 is attached to the. The terminal fitting 3 is double-stopped and locked by the locking lance 23 in the terminal accommodating chamber 19 and the opening end 27 of the cover 9.

  According to this, since the terminal fitting 3 is retained and locked at the opening end 27 of the opening into which the electric wire 7 is inserted into the cover 9, the cover 9 can be mounted on the housing 5 without being obstructed by the electric wire 7. It can be improved.

  Further, since the end portion on the opening end 27 side of the cover 9 is inserted into the slit 33 of the housing 5, the cover 9 is attached to the housing 5 so that the end portion on the opening end 27 side of the cover 9 is sandwiched by the slit 33. Therefore, the detachment of the cover 9 due to an external force or the like can be suppressed.

  In addition, the terminal metal fitting 3 is not limited to the terminal metal fitting 3 provided with the female terminal 11, and it can replace with the female terminal 11 and can use the terminal metal fitting provided with the male terminal.

  In addition, as shown in FIG. 6, the electric wire 7 can be bent in the direction opposite to the insertion direction of the cover 9 and pulled out from the cover 9 to form a connector.

DESCRIPTION OF SYMBOLS 1 Connector 3 Terminal metal fitting 5 Housing 7 Electric wire 9 Cover 13 Electric wire connection part 19 Terminal accommodating chamber 25 Flat plate part 27 Open end 28 Convex part 29 Groove 31 Outer wall 33 Slit 35 Projection 39 Concave part

Claims (2)

A plurality of terminal fittings having a terminal connected to the counterpart terminal and a wire connecting portion, a housing in which terminal accommodating chambers for accommodating the plurality of terminal fittings are arranged in parallel, and one end of the housing engaged with the terminal fitting In a connector comprising a cover for bundling the electric wires drawn out from the housing,
The cover has a substantially U-shaped or U-shaped cross section, and at least part of the inner surface of the opening end side of the substantially U-shaped or U-shaped opposing flat plate portion along the opening edge. Grooves are formed,
In the housing, a slit is formed on the outer wall along the one end to insert the opening end side of the cover, and a protrusion that fits into the groove of the cover is formed on the inner surface of the slit.
The protrusion formed in the slit is formed at a position where an opening end of the cover abuts a rear end of the terminal fitting in a state where the cover is inserted into the slit. The connector according to claim 1,
The connector is characterized in that a convex portion is formed on the outer surface of the flat plate portion of the cover on the opening end side, and a concave portion capable of locking the convex portion is formed on the inner surface of the slit.

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