JPH0896864A - Pressure contact connector - Google Patents

Abstract

PURPOSE: To provide a pressure contact connector realizing a compact size, improving cable holding force and allowing easy automatic assembly. CONSTITUTION: A cable press-in hole 21 is formed on the upper surface of the bottom plate 19 of a terminal housing chamber 5 in a housing 2, and the rear end of the terminal bottom plate 6 of a terminal 3 is provided with a vertical plate 16 having a rear coupling 17, while a rear coupling section 25 is formed on the front of an upright plate 24 at the rear end of the bottom plate 19. In addition, an arm section 18 bent backward along a guide plane 15 and the upper end of the vertical plate 16 and then folded back, is provided between the terminal bottom plate 6 and the vertical plate 16. Furthermore, a front coupling hole 9 is formed on the side of a contact piece coupling section 7 on the front of the terminal 3, and a front coupling section 22 is formed on the front of the housing 2. Also, the housing 2 is provided with a guide 23 for engagement with the cutout sections 12 of the terminal bottom plate 6 formed at the front and rear sections of a pressure contact terminal 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure contact connector,
More specifically, the present invention relates to a press-connecting connector that can improve the wire holding force of an electric wire press-fitted and connected to each terminal in a housing and can reduce the size of the connector.

[0002]

2. Description of the Related Art Conventionally, various pressure contact connectors in which terminals for press-fitting and connecting electric wires are inserted are known. For example, the pressure contact connector disclosed in Japanese Utility Model Laid-Open No. 61-8952 will be described. As shown in FIG. 6, the housing 52 of the press-connecting connector 51 is a container extending in the axial direction of the rectangular cross section, and the terminal accommodating chamber 53 is provided inside. An electric wire press-in port 55 is formed in the rear portion of the terminal accommodating chamber 53 so that the covered electric wire 54 can be press-fitted and connected thereto from above. Further, the lance groove 57 having the step 57a extends from the front end of the bottom plate 56 to the center thereof.
Is provided.

In the terminal accommodating chamber 53, a terminal 58 as shown in FIG. 7 is inserted and attached to the front through an electric wire outlet 59 provided at the rear end of the housing 52. Terminal bottom plate 6 of this terminal 58
The front end of 0 has a contact piece 61 which is bent upward and then extended rearward, and a tongue-shaped lance 62 is provided on the front portion so as to project downward. Further, a pressure contact connecting portion 63 is provided upright on the rear portion of the terminal bottom plate, and a slot 63a is formed in the central portion. Therefore, the lance 62 of the terminal 58 accommodated in the terminal accommodating chamber 53 is engaged with the step portion 57a of the lance groove 57 provided in the bottom plate 56 of the housing 52, and
The wire pressure inlet 55 is arranged above the press-connecting connection portion 63.

Further, a terminal cover 65 which is rotatable around the first hinge 64 is provided above the wire pressurizing port 55. At the rear end of this terminal cover 65,
In order to prevent the electric wire 54 from being pulled out rearward, a first electric wire gripping piece 66 having a first electric wire gripping concavo-convex portion 66a is integrally provided. Further, a second electric wire gripping piece 68 having a second electric wire gripping uneven portion 68 a, which is rotatable by a second hinge 67, is provided below the rear end of the bottom plate 56 of the housing 52. Therefore, the electric wire 54 is the first electric wire gripping piece 6
6 and the second electric wire gripping piece 68 firmly grips it from above and below. Furthermore, the first and second lock portions 69 and 70 for locking the first and second electric wire gripping pieces 66 and 68 in the gripped state have the first and second electric wire gripping pieces 6 respectively.
It is provided at the rear end of 6,68.

Further, on the back surface of the terminal cover 65, a holding projection 7 for holding the slot 63a from above.
1 is provided. That is, the electric wire 54 is connected to the housing 52.
The electric wire holding means for holding the inside is a first hinge 64, a first electric wire gripping piece 66, a first electric wire gripping uneven portion 66a, a first locking portion 69, a second hinge 67, a second electric wire gripping piece 68, a second electric wire. It is composed of a gripping concavo-convex portion 68a, a second lock portion 70, and a pressing protrusion 71.

With the above structure, the first and second hinges 6 are provided first.
After the first and second electric wire gripping pieces 66 and 68 are opened around the electric wires 4, 67 to open the electric wire outlet 59, the terminal 58 is opened.
Is inserted into the terminal accommodating chamber 53 from the rear. Then, when the electric wire 54 is pushed down from above the electric wire press-in port 55, a part of the coating of the electric wire 54 is cut by the slot 63 a of the press contact connection portion 63, and the electric wire 54 is electrically connected to the terminal 58. Furthermore, the first and second electric wire gripping pieces 66, 6
8 and the terminal cover 65 are closed so that the first and second
When the electric wires 54 are locked by the locking portions 69 and 70, the electric wires 54 are bitten by the first and second electric wire gripping concavo-convex portions 66a and 68a and are strongly locked. There is no.

[0007]

However, in the above-mentioned pressure contact connector 51 according to the prior art, when the electric wire 54 is strongly pulled rearward, the lance 62 of the terminal 58 is caught and supported by the step portion 57a of the housing 52. It is not enough to do so, so the first and second wire gripping pieces 66, 6
8 and the first and second hinges 64 and 67 are required. Therefore, there is a problem in that the rear portion of the press-connecting connector 51 becomes complicated, becomes large in size, and becomes expensive.

When assembling, the terminal 5
8 is inserted from the rear of the housing 52, but the electric wire 54
Is pressed from above, and the terminal cover 65 and the first and second electric wire gripping pieces 66 and 68 are opened and closed by rotating the first and second hinges 64 and 67 as centers. Therefore, there is a problem that automatic assembly is difficult. Furthermore, since the second electric wire gripping piece 68 is accompanied by the rotational movement about the second hinge 67, it cannot be stacked vertically, and there is a problem that the number of assembly units is limited.

In order to strengthen the holding force when the electric wire is pulled rearward, a structure has been proposed in which the rear portion of the electric wire press-contacted to the press-connecting connection portion is bent horizontally and held upward. However, the position of the bridging portion for holding the electric wire is unavoidably high at the rear portion of the housing because the terminal is inserted from the rear of the housing. Therefore, there is a problem that the height dimension of the press-connecting connector becomes large and the size cannot be reduced.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a press-connecting connector capable of downsizing the connector and improving the wire holding force and facilitating automatic assembly. Especially.

[0011]

DISCLOSURE OF THE INVENTION The above object of the present invention is to provide a housing having a plurality of terminals each having a press-connecting connection portion and an electric wire press-in port opened upward in a press-fitting direction of an electric wire into each press-connecting connection portion. In a press-connecting connector housed in a terminal housing chamber and provided with a wire holding means for pulling a wire backward, a wire press-in port is provided over the entire length of the housing, and a vertical holding hole is provided at a rear end portion of a terminal bottom plate. This can be achieved by a press-connecting connector including a plate and a rear locking portion that is provided on the front surface of the upright plate at the rear end of the bottom plate of the housing and that engages with the rear locking hole.

Further, the above-mentioned object is such that the terminal is provided with a guide surface between the terminal bottom plate and the vertical plate for facilitating attachment to the housing, is bent rearward, and has a vertical urging force. This is achieved by providing an arm portion at the upper end of the vertical plate.

Further, the above object is to provide an upright plate, an arm portion,
This is achieved by the wire holding means being configured by a wire retainer provided on the upper end of the rear end of the cover provided to cover the wire pressure inlet.

Further, the above object is that the notch portions are provided in front of and behind the press-contacting connecting portion of the terminal bottom plate, and the guides engaging with the notch portions are vertically extended to both side wall surfaces of the terminal accommodating chamber. To be achieved.

Further, the above object is to provide a front locking hole in the side surface of the connector piece fitting portion provided at the front end of the terminal bottom plate, and to secure the front locking portion engaging with the front locking hole in the terminal accommodating chamber. It is achieved by projecting it on the side wall of.

[0016]

[Operation] In the press-connecting connector having the above structure according to the present invention, the terminal is first assembled from above the terminal accommodating chamber of the housing. At this time, the notch provided in the terminal is guided by the guide provided in the housing, and the vertical plate of the terminal rides on the guide surface and rides over the rear locking part of the housing to lock the rear part of the vertical plate. The hole is locked to the rear locking part of the housing. Also,
The front locking hole of the terminal is also locked to the front locking portion of the housing.

Next, the electric wire is pushed into the terminal from above the electric wire pressurizing port of the housing, the coating of the electric wire is cut into the slot of the press-connecting connection portion, and is electrically connected to the terminal. Further, the rear portion of the electric wire is crimped and bent by the guide surface of the terminal, the vertical plate and the arm portion. Then, when the cover is mounted and locked from the front of the housing, the upper portion of the bent electric wire is locked by the electric wire retainer of the cover.

That is, the mounting of the terminal and the pressure welding of the electric wire are
Since it is performed from above the housing, automatic assembly can be facilitated. Further, since the electric wire is bent and then locked by the electric wire retainer and the front and rear of the pressure contact portion are held, the electric wire holding force is increased by the compact electric wire holding means.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the pressure contact connector of the present invention will be described in detail with reference to FIGS. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is an operation explanatory view showing an intermediate state of assembling a terminal in a housing in FIG. 1, and FIG. 3 is an operation explanatory diagram showing an assembling completed state in FIG. 4, FIG. 4 is a plan view of FIG. 3, and FIG. 5 is an operation explanatory view showing a completed state of mounting the cover.

As shown in FIG. 1, the press-connecting connector 1 is composed of a housing 2, a terminal 3 and a cover 4. In this housing 2, six terminal accommodating chambers 5 are arranged side by side, and a cover 4 is also configured corresponding to the configuration of the housing 2. Also, Terminal 3
Is a metal plate having good conductivity, and a box-shaped contact piece fitting portion 7 is provided at the front end of the terminal bottom plate 6 on the lower surface, and the contact piece 8 provided inside serves as a mating contact piece. They make contact and are electrically connected. A front locking hole 9 is provided on the side surface of the contact piece fitting portion 7.

Further, a pressure contact connecting portion 10 is provided at the center of the terminal bottom plate 6. This pressure connection part 10
Has a plate wall standing vertically from the side end of the terminal bottom plate 6, and a front wall and a rear wall are bent inward from the front and rear ends of the plate wall. A slot 11 is provided as a gap in the central portions of the front wall and the rear wall. Further, the terminal bottom plate 6 before and after the press-connecting connection portion 10 is provided with a cutout portion 12.

Further, a caulking portion 14 for crimping the electric wire 13 is provided at a rear portion of the terminal bottom plate 6, and the terminal bottom plate 6 at the rear portion of the caulking portion 14 has an inclined guide surface 1
5 are provided. At the rear end of the guide surface 15, a vertical plate 16 having a rear locking hole 17 is continuously provided. Further, an arm portion 18 bent rearward at a right angle is provided on the upper end of the vertical plate 16. The arm portion 18 is folded back in a U shape at the rear end portion and has an elastic function of generating a biasing force against a pressing force in the vertical direction.

Further, the terminal accommodating chamber 5 of the housing 2
Is composed of a bottom plate 19 and side plates 20 on both sides, and an upper portion is opened as a wire pressure inlet 21. This side plate 20
The front locking portion 22 that engages with the front locking hole 9 is provided on the inner front side of the
Is provided, and a guide 23 that engages with the cutout portion 12 provided in the terminal bottom plate 6 is provided in the middle portion so as to extend in the vertical direction. Further, the bottom plate 1 of the terminal accommodating chamber 5
The upright plate 24 is erected at the rear end of the 9 and the upright plate 2
On the front surface of 4, the rear locking portion 2 engaged with the rear locking hole 17 is provided.
5 is projected.

The cover 4 is mounted so as to be fitted from the front of the housing 2, and has a locking hole 26 provided on the side surface.
Is locked and engaged with a locking projection 27 provided on the side surface of the housing 2. The terminal cover 28 of the cover 4 covers the wire pressurizing port 21 of the terminal accommodating chamber 5, and the wire retainer 29 provided at the upper rear end of the terminal cover 28 presses the wire 13 from above. There is. That is, the electric wire retainer 30 is composed of the electric wire retainer 29, the arm portion 18, and the upright plate 24.

Next, as shown in FIG. 2, the terminal 3 is
When pushed down from above the housing 2, the notch 12 of the terminal bottom plate 6 is pushed down while being guided by the guide 23 of the housing 2. At this time, the guide surface 15 is pushed in while contacting the rear locking portion 25.

As shown in FIGS. 3 and 4, the rear locking hole 17 is locked by the rear locking portion 25 so that the vertical plate 16 is brought into contact with the front surface of the upright plate 24. At this time, the front locking hole 9 is also locked by the front locking portion 22 to prevent the terminal 3 from being lifted up.

Next, as shown in FIG. 5, when the electric wire 13 is pushed down from above the electric wire press-in port 21 by an unillustrated press-connecting jig or the like, the covering portion is cut by the slot 11 of the press-connecting connection portion 10 and at the same time. The electric wire 13 is electrically connected to the terminal 3. In addition, the electric wire 13 is the crimp portion 14
It is crimped by, is raised along the upright plate 24, is then guided rearward along the arm portion 18, and is bent into a crank shape. At this time, according to the movement of the pressure welding jig, the pressure welding connection portion 10 and the caulking portion 14 at the rear of the terminal 3
Tries to lift, but does not lift because the rear locking hole 17 is locked by the rear locking portion 25.

Next, when the cover 4 is fitted from the front of the housing 2 and the locking hole 26 shown in FIG. 1 is locked by the locking projection 27, the rear end of the terminal cover 28 and the wire retainer 2 are held.
9 and the arm portion 18 firmly hold the upper portion of the electric wire 13. At this time, the arm portion 18 is appropriately bent,
It contacts the lower end surface of the electric wire 13 while urging the electric wire 13. Therefore, even if the wire 13 is strongly pulled backward, the upright plate 19, the arm portion 18, and the wire retainer 29 cause the wire 13 to move.
Is held firmly and will not slip out.

Further, the rear surface of the pressure contact portion 10 is a guide 23.
Since the slot 11 does not open and the electrical connection state with the terminal 3 is deteriorated, the reliability of the pressure contact portion 10 can be improved. Further, since the holding force of the electric wire 13 is enhanced by bending the electric wire 13 in a crank shape, no additional electric wire holding means is required at the rear portion of the housing 2.

Further, the terminal 3 is the terminal accommodation room 5
Since it is installed from above, the wire retainer 29 on the cover 4
Can be provided in a low position, and a compact pressure contact connector as a whole can be provided. Further, since the terminal 3 and the electric wire 13 are both assembled from above the terminal accommodating chamber 5 of the housing 2, there is an effect that automatic assembly becomes easy. It should be noted that the present invention is not limited to the above-described embodiments, and can be implemented in other modes by making appropriate changes.
For example, in the present embodiment, the folded-back portion of the arm portion 18 is folded back upward, but it is possible to deal with it even if it is folded back downward.

[0031]

As described above, according to the press-connecting connector of the present invention, both the mounting of the terminal and the press-connecting of the electric wire are performed from above the terminal accommodating chamber of the housing, which facilitates automatic assembly and improves work efficiency. Can be improved. In addition, since the wire is bent and then locked by the wire retainer, and the pressure contact part is also held by the front and rear guides, the wire holding force is strong,
The electric wire holding means can be simplified. Furthermore, since the terminal is mounted from above the housing, the position of the wire retainer is set low, so that the overall size is smaller and lighter, and an inexpensive pressure contact connector can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a pressure contact connector of the present invention.

FIG. 2 is an explanatory diagram showing a state in which the terminal of FIG. 1 is being assembled into a housing.

FIG. 3 is an explanatory diagram showing a completed assembly state in FIG.

FIG. 4 is a plan view of FIG.

5 is an explanatory view showing a fitted state of the cover on the housing in FIG. 1. FIG.

FIG. 6 is a cross-sectional view showing a conventional pressure contact connector.

FIG. 7 is a perspective view showing a relationship between terminals and electric wires in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pressure contact connector 2 Housing 3 Terminal 4 Cover 5 Terminal accommodation chamber 6 Terminal bottom plate 7 Contact piece fitting part 9 Front locking hole 10 Pressure contact connection part 12 Notch part 13 Electric wire 14 Caulking part 15 Guide surface 16 Vertical plate 17 Rear part Locking hole 18 Arm part 19 Bottom plate 21 Wire press-in port 22 Front locking part 23 Guide 24 Upright plate 25 Rear locking part 28 Terminal cover 29 Wire clamp 30 Wire holding means

Claims (5)

[Claims] 1. A plurality of terminals having press-connecting connection portions are accommodated in respective terminal accommodating chambers of a housing having an electric wire press-in port opened upward in a press-fitting direction of the electric wire into each press-connecting connection portion, A press-connecting connector provided with a wire holding means against a rearward pulling force, wherein the wire press-in port is provided over the entire length of the housing, and a vertical plate having a rear locking hole at a rear end portion of a terminal bottom plate, and a bottom plate of the housing. A press-connecting connector comprising a rear locking portion provided on the front surface of the upright plate at the rear end and engaged with the rear locking hole. 2. The terminal is provided with a guide surface between the terminal bottom plate and the vertical plate for facilitating mounting to a housing, is bent rearward, and applies a biasing force in a vertical direction. The press-connecting connector according to claim 1, further comprising an arm portion having the upper end of the vertical plate. 3. The electric wire holding means is constituted by the upright plate, the arm portion, and an electric wire retainer provided at an upper portion of a rear end of a cover provided to cover the electric wire pressure inlet. The press-connecting connector according to claim 1 or 2, which is characterized. 4. A notch portion is provided in front of and behind the press-connecting connection portion of the terminal bottom plate, and guides engaging with the notch portion are vertically extended to both side wall surfaces of the terminal accommodating chamber. The press-connecting connector according to claim 1, which is characterized in that. 5. A front locking hole is provided in a side surface of a connector piece fitting portion provided at a front end of the terminal bottom plate, and a front locking portion engaging with the front locking hole is provided in the terminal accommodating chamber. The press-connecting connector according to claim 1, wherein the press-connecting connector is provided on the side wall.