JPH1167289A - Pressure contact connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fit a cover to keep a normal attitude. SOLUTION: Pressor legs 22 for pressing bendingly pressure contact electric wires 9 toward recesses 15 of cavities 5 are provided in a cover 3. A pair of arms 26 is formed vertically from both left and right ends in a rear end part of the cover 3. Vertical guide grooves 29 for fitting tightly the arms 26 to be guided are formed in left and right side faces of a rear end part in a housing 1. After the wires 9 are brought into pressure contact, the cover 3 is pressed-in to fit tips of both arms 26 to the guide grooves 29. Since the arms are fitted tightly to the guide grooves 29 to regulate their inclining motions by protruded walls 30, the cover 3 is straight pressed-in along the guiding walls 29 without generating any unfavorable attitude of a front end side of the cover 3 caused by contact of lower ends of the pressor legs 22 against upper faces of the wires 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press-connecting connector for press-connecting an electric wire to a press-connecting terminal housed in a housing.

[0002]

2. Description of the Related Art FIG.
As shown in (A), a plurality of cavities b having an open upper surface and a rear end portion are arranged in a housing a, and a press-contact terminal c is accommodated in each cavity b. The electric wire e is pushed in and pressed against the pressure contact terminal c, and further covered with a cover f so as to cover the opening d on the upper surface, and as shown in FIG. It is known that a portion pulled out from the terminal c is bent and held down in a crank shape to prevent the wire e from being applied to a press-contact portion when a tensile force acts on the wire e.

[0003]

However, in the prior art, the holding leg g of the cover f is formed in a shape protruding from other parts in terms of its function. Since the presser leg g is further pushed after hitting the press-contact wire e, there is a possibility that the cover f may be inclined from the normal posture and fitted into the opening d as shown in FIG. In particular, when mounting is performed using a jig, such a problem may occur, which is an adverse effect in achieving automation of assembly. The present invention has been completed based on the above circumstances,
The purpose is to allow the cover to be mounted while maintaining the normal posture.

[0004]

According to a first aspect of the present invention, there is provided a connector housing in which a pressure contact terminal is accommodated in a connector housing and an opening for electric wire pressure contact is formed on one surface. Guide means for mounting and guiding the cover in a normal posture in a press-connecting connector provided with a cavity and having a cover for bending and pressing a press-connecting wire drawn from the press-connecting terminal and fitted into the cavity, It is characterized by having a configuration provided with.

According to a second aspect of the present invention, in the first aspect of the present invention, an arm is provided on one of the side surface of the cover and the connector housing along a mounting direction of the cover, and the other side is provided on the other side. The present invention is characterized in that the guide means is configured by providing a guide for fitting and guiding the arm.

According to a third aspect of the present invention, in the second aspect of the present invention, when the cover is mounted, the tip of the arm faces the inside of the guide when the leg piece abuts on the pressure welding wire. It has a characteristic where it is.

According to a fourth aspect of the present invention, in the first, second or third aspect of the present invention, the guide means includes a lock means for locking the cover when the cover is mounted at a proper position. It has features where it is used.

[0008]

Actions and effects of the present invention

<Invention of Claim 1> When the cover is mounted toward the opening of the housing, the cover is pushed in while maintaining a normal posture while being guided by the guide means. This is suitable when the work of attaching the cover is automated using a jig or the like.

<Invention of Claim 2> When the cover is pushed toward the opening of the housing, the arm is fitted in the guide and is mounted while maintaining a normal posture while being guided by the guide.

<Invention of Claim 3> Since the tip of the arm faces the inside of the guide at the timing when the cover is pushed in and the leg piece abuts on the insulation displacement wire, the cover is surely protected even if it receives resistance from the insulation displacement wire. It is pushed in while maintaining a normal posture.

<Invention of Claim 4> When the cover is mounted in the proper position, the cover is locked in a locking state by the locking means.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. This embodiment exemplifies a female pressure contact connector. As shown in FIGS. 1 and 3, a connector housing 1 (hereinafter simply referred to as a housing) and a plurality (four) of female pressure contact terminals 2 are provided. And a cover 3 attached to the housing 1.

The housing 1 is formed of a synthetic resin material into a flat block shape. In the housing 1,
Four cavities 5 facing in the front-rear direction into which the above-mentioned female pressure contact terminals 2 are inserted are formed side by side in the width direction. The top surface of each cavity 5 is closed at a front end side (right side in FIG. 3) with a predetermined width by a closing portion 6, and is opened further behind. Each cavity 5 is partitioned by a partition wall 7.

The press contact terminal 2 has a shape in which a box-shaped connection portion 11 into which a tab (not shown) of a mating male press contact terminal 2 is inserted and connected is formed at the tip of a main body 10 having an open upper surface. The body 10 is provided with two press-contact blades 12 spaced apart in the front and rear. The press contact terminal 2 is inserted into each cavity 5 from the rear (left side in FIG. 3), and is housed in a state where it cannot be removed.

At the left and right sides of the upper edge of the opening 8 of each of the cavities 5, two locking portions 1 are provided at the back side and the near side.
4 are protruded at intervals. The lower surface of each of the locking portions 14 is a locking surface, and an oblique guide surface is formed on the upper surface. On the bottom surface of the rear end of each cavity 5,
Recesses 15 each having an opening on the rear surface are formed in a stepped shape. The bottom surface of each recess 15 is formed in an arc shape in accordance with the lower surface of the electric wire 9.

The cover 3 is also made of a synthetic resin material and has a shape capable of covering the opening on the upper surface of the housing 1. In detail, a main body plate 17 that can cover from the rear end of the housing 1 to a position slightly before the closing portion 6 is provided. On the lower surface of the main body plate 17, the same number of pressing protrusions 18 that can be individually fitted into the respective cavities 5 over substantially the entire length thereof are formed via escape grooves 19 for fitting and releasing the partition wall 7 on the housing 1 side. ing. Therefore, the front end of the pressing ridge 18 protrudes from the main body plate 17 by a predetermined dimension.

Each of the pressing ridges 18 functions to hold the pressed wire 9 in a pressed state. A relief recess 20 is formed on the lower surface of each pressing ridge 18 so that the upper ends of the two pressure contact blades 12 of the pressure contact terminal 2 are fitted and released.
At the rear end side of each pressing ridge 18, the concave portion 15 of the cavity 5 is provided.
Is formed so as to form an L-shape. The lower end surface of the holding leg 22 is formed in an arcuate shape in conformity with the upper surface of the electric wire 9.

Further, on both left and right sides of the lower edge of each pressing ridge 18, two locked portions 24 are protrudingly provided on both front and rear sides with the relief recess 20 interposed therebetween. The upper surface is a locking surface, and the lower surface is formed with an oblique guide surface. Therefore, when the cover 3 is pushed in as described later in detail, the locked portion 24 of the cover 3 rides over the locking portion 14 of the housing 1 and is locked below, so that the cover 3 is locked. It is designed to be locked in a state where it cannot be pulled upward.

From the left and right ends of the rear end of the main body plate 17 of the cover 3, a flat plate-like arm 26 having a predetermined width is formed.
Are formed in a drooping shape. At the front end of the lower end of the inner surface of the arm 26, a locked projection 27 is formed. The locked projection 27 has a locking surface on the lower surface side and an oblique guide surface on the upper surface side.

On the other hand, guide grooves 29 for fitting and guiding the arms 26 provided on the cover 3 are formed on the left and right side surfaces at the rear end of the housing 1, respectively. More specifically, two projecting walls 30 facing in the up-down direction are formed at an interval equal to the width of the arm 26 in the front-rear direction, and a guide groove 29 facing in the up-down direction is formed therebetween. .

The guide groove 29 is formed such that a substantially half area on the rear side is raised outward and is shallow, and the inner surface of the arm 26 is in sliding contact with the shallow bottom surface 31. On the other hand, in the front region, the bottom is deep, and the locked projection 2
An escape groove 32 for fitting and escaping 7 is formed. A lock portion 33 is formed at a lower end of the escape groove 32. The lock portion 33 has a lock surface on the lower surface side and an oblique guide surface on the upper surface side.

When the cover 3 is put on the housing 1 and the lower end of the holding leg 22 is in contact with the press-connecting wire 9, a predetermined length of the lower end of the arm 26 is fitted into the guide groove 29. It is set to be. Further, when the cover 3 is pushed down to the normal position, the locked projection 27 of the arm 26 is set over the lock 33 of the guide groove 29.

The present embodiment has the above structure,
Subsequently, the operation will be described. First, the press contact terminal 2 is inserted and accommodated in each cavity 5 of the housing 1 in the manner described above. Subsequently, the electric wires 9 are inserted into the respective cavities 5 from above through the openings 8, and the leading ends are placed over the upper surfaces of the two press contact blades 12 of the corresponding press contact terminals 2. Further, by inserting a pressing jig (not shown) into each of the cavities 5, the electric wire 9 is pushed toward the bottom side, and two places of the electric wire 9 are pressed by the pressing blade 12 as shown in FIG. The conduction between the electric wire 9 and the press contact terminal 2 is established.

Next, the cover 3 is fitted toward the opening on the upper surface of the housing 1. At this time, when the tips of both arms 26 provided on the cover 3 are pushed in accordance with the guide grooves 29 of the housing 1, the cover 3 is pushed straight while being guided by the guide grooves 29. When the cover 3 is pushed in, as shown in FIG.
Is in contact with the upper surface of the electric wire 9 drawn rearward from the press contact terminal 2. That is, since only a part of the rear end side of the cover 3 hits the upper surface of the insulation displacement wire 9 and receives resistance, when the cover 3 is further pushed in, the front end side of the cover 3 faces downward with the lower end of the holding leg 22 as a center. The arm 26 may be tightly fitted in the guide groove 29 of the housing 1 and its tilting is restricted by the protruding wall 30 as shown in FIG. 3 is pushed straight without inclining along the guide groove 29.

As the cover 3 is pushed in, the portion of the electric wire 9 drawn rearward from the press contact terminal 2 is gradually bent in a crank shape toward the recess 15. During this time, while the arm 26 bends outward and deforms, the locked projection 27 rides on the locking portion 33 at the lower end of the guide groove 29, and the cover 3 is pushed into the proper position. As shown in FIG. The projecting portion 27 gets over the locking portion 33 and the cover 3 is restored and deformed while the locked projecting portion 27 is
3 is locked by being locked to the lower surface. The pressing ridge 18 of the cover 3 enters the cavity 5, and the locked portion 24 on the pressing ridge 18 side engages with the locking portion 14 of the cavity 5.
And gets locked underneath. As a result, the cover 3 is locked at the proper mounting position in a state where the cover 3 does not fall upward (FIGS. 5 and 8).

In the state where the cover 3 is mounted at the proper position, the pressing ridge 18 is released from the pressing contact blade 1 into the recess 15.
By pushing the upper surface of the press-connecting wire 9 while pushing the upper end of the press-fitting wire 9 while fitting the upper end of the wire 2, the wire 9 is held in a state of being prevented from coming off from the press-contact blade 12. At the same time, the electric wire 9 pulled rearward from the press contact terminal 2 is pressed by the holding leg 22 and pressed down while being bent in a crank shape in the concave portion 15, so that even if a backward pulling force acts on the electric wire 9. The tension is regulated by being locked by the holding leg 22, and the tensile force is prevented from reaching the press contact blade 12.

As described above, according to the present embodiment,
When the cover 3 is pushed in, the holding leg 22
The arm 26 provided on the cover 3 is already tightly fitted into the guide groove 29 of the housing 1 when the cover 3 is inclined by contacting the upper surface of the cover 3 and receiving resistance. , The cover 3 is pushed straight toward the normal position without tilting. Thereby, the function of holding the electric wire 9 in the pressure contact state and the function of bending and holding the electric wire 9 in a crank shape can be achieved accurately.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) Contrary to the above embodiment, it is also possible to provide an arm on the housing side and a guide groove on the cover side. (2) The present invention can be similarly applied to male-side press-connecting connectors.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a housing according to an embodiment of the present invention.

FIG. 2 is a perspective view of a housing and a cover seen from a lower surface side.

FIG. 3 is a longitudinal sectional view showing a state before a cover is attached.

FIG. 4 is a longitudinal sectional view showing a state in which a holding leg of a cover is in contact with an electric wire.

FIG. 5 is a vertical cross-sectional view when the cover is completely mounted.

FIG. 6 is a partial cross-sectional view in a state in which a holding leg of a cover is in contact with an electric wire

FIG. 7 is a partial cross-sectional view when mounting of the cover is completed.

FIG. 8 is a perspective view when the cover is completely mounted.

9A is a longitudinal sectional view of a conventional example before a cover is attached, and FIG. 9B is a longitudinal sectional view of the conventional example with the cover attached.

FIG. 10 is a longitudinal sectional view showing a state in which a cover is inclined in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Housing 2 ... Pressure contact terminal 3 ... Cover 5 ... Cavity 8 ... Opening 9 ... Electric wire 15 ... Depression 22 ... Holding leg 26 ... Arm 27 ... Locked protruding part 29 ... Guide groove 30 ... Protruding wall 33 ... Locking part

Claims (4)

[Claims] A connector housing is provided with a cavity capable of accommodating a pressure contact terminal and having an opening for wire pressure contact formed on one surface, and a pressure contact wire fitted into the cavity and pulled out from the pressure contact terminal. A press-connecting connector provided with a cover having leg pieces for bending and pressing the cover, wherein guide means are provided for guiding the mounting while the cover holds a normal posture. 2. An arm extending in a mounting direction of the cover is provided on one of the side surface of the cover and the connector housing, and a guide for fitting and guiding the arm is provided on the other side. The press-connecting connector according to claim 1, wherein the guide means is configured by being provided. 3. The apparatus according to claim 2, wherein when the cover is mounted, the tip of the arm faces the inside of the guide when the leg piece abuts on the press-connecting wire. IDC connector. 4. The guide means according to claim 1, wherein said guide means is provided with a lock means for locking said cover when said cover is mounted in a proper position. IDC connector.