JPS6235265Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in electrical connectors. Electrical connectors used in conventional electrical connectors are shown in FIGS. 1 to 4. In this conventional electrical connector 1, when an excessive pressing force P is applied to the contact portion 1b, the contact portion The free end 1c of 1b comes into contact with the inner surface of the substrate part 1a, and when the connector 1 is further moved backward, the free end 1c comes into contact with the protrusion 1d projecting upward from below (dashed line in FIG. 2), thereby making contact. Permanent deformation of portion 1b is prevented. However, in the case of such a structure, it is necessary to provide flat parts on the front, rear, left and right sides of the protrusion 1d so that the free end 1c of the contact part comes into contact with the protrusion 1d and makes it easier to slide backward, or to press the protrusion 1d. As a result, the electrical connector 1 has the disadvantage that its overall length becomes longer in the axial direction and its width becomes wider. Therefore, when this electric connector 1 is mounted inside instruments, there is an inconvenience that the space factor becomes poor.

In addition, 1e is a connection part of the core wire 3a, 1f is a mounting part of the electric wire 3, 1g and 1g' are side walls, 1h is a locking hole, 1i is a hole edge, and 1j and 1'j are edges.

The present invention has been devised in view of the above circumstances, and it is an object of the present invention to provide an electrical connector that can eliminate the drawbacks of the conventional examples.

The present invention will be explained in detail below based on the embodiments shown in FIGS. 5 to 13.

First, the structure of the electrical connector 2 according to this embodiment will be explained based on FIGS. 8 to 13. 2a is a terminal plate having a substantially U-shaped cross section with side walls 2i and 2'i formed on both sides. The terminal plate 2a is integrally formed with an elastic contact piece 2b that extends forward and is folded back, and a pair of notched steps narrowing the width are provided at the free end of the elastic contact piece 2b. 2c, 2'c
A narrow projecting tip 2d is formed. Further, the terminal plate 2a is formed with a housing locking hole 2h and a notch 2e continuous with the locking hole 2h and into which the projecting tip 2d is engaged. 2f is the core wire 4a of the electric wire 4
The core wire connecting portion 2g is a holding portion for the electric wire 4. The above is the structure of the electrical connector 2. Next, we will discuss the male connector that accommodates the electrical connector 2. The connector housing 5e of the male connector 5 has a through hole 5a through which the electrical connector 2 is inserted and guided. , a lance 5c that is engaged with the locking hole 2h of the electrical connector 2 inserted into the through hole 5a, and a locking claw 5d and a stopper 5b for connecting with the female connector are formed. 7 is a female connector into which the male connector housing 5e is fitted, and the connector housing 7d of the female connector has a fitting hole 7a of the male connector housing 5e, a contact surface 7b of the male connector housing 5e, and a flexible printed wiring. A plate locking pin 7c is provided. The flexible printed wiring board 6 is exposed and fits into the fitting hole 7.
an electrical connection part 6a and an insulating coating 6b located within a
have.

Therefore, the exposed electrical connection portion 6a of the flexible printed wiring board 6 is positioned in the fitting hole 7a of the female connector housing 7d, and then the male connector with the electrical connector 2 attached thereto is placed in the fitting hole 7a. 5, the contact piece 2b of the electrical connector 2 and the electrical connection portion 6a of the flexible printed wiring board 6 are brought into elastic and electrical contact.

Projection portion 2d of contact portion 2b during this contact
is the notch 2e of the locking hole 2h due to the contact pressing force.
However, at this time, as shown in FIG. 12, the stepped portions 2c and 2'c are in a slightly floating state without contacting the inner surface of the terminal plate 2a, and the elastic contact piece 2b is sufficiently It has an elastic function.

In a normal connected state, it works as described above, but when handling it during the manufacturing process in a semi-finished product state where the electric wire 4 is simply crimped and connected to the electrical connector 2, or when it is assembled into the male connector housing 5e. If excessive pressing force is applied to the contact piece 2b of the electrical connector 2 due to accidental handling later, the notch 2e
The step portion 2c is brought into contact with both side edges of the contact piece 2, and its protruding tip 2d is locked in the notch 2e as shown in FIG. 13, so that further deformation is prevented.
A contact piece 2b that can prevent permanent deformation of the contact piece 2b and always maintains stable flexibility and elasticity can be obtained.

In the above embodiment, the notch 2e was formed continuously with the locking hole 2h, but instead of this notch 2e, another protrusion for locking that is independent of the locking hole 2h is provided. A through hole may be provided.

As described above, the present invention includes a female connector 7 having an electrical connection portion 6a, and a terminal plate 2a that is removably inserted into the female connector 7 and extends in the insertion direction.
The electrical connector 2 is formed by folding back the front end of the terminal plate 2a in the insertion direction, and the folded free end is attached to the terminal plate 2a. A chevron-shaped elastic contact piece 2b that faces the electrical connection part 6a of the female connector 7 with a distance therebetween has a connection end 2f for connecting and fixing the conductive wire 4 at the rear end, and a notch in the middle part. 2e are provided respectively, and the elastic contact pieces 2
Notch steps 2c are provided on both sides of the folded free end of b, and a protruding tip 2d is formed between these notch steps 2c, so that the elastic contact piece 2b is not excessively pressed toward the terminal plate 2a. At this time, the protruding tip 2d penetrates into the notch 2e, and the notch step portion 2c of the folded free end engages with the edge of the notch 2e to restrict the extension of the elastic contact piece 2b. According to this electrical connector, the length in the axial direction of the electrical connector can be made relatively short while maintaining the same function and effect as the conventional electrical connector. Not only that, but also because the notch 2e is engaged at the edge, it can be made narrower, which, combined with the conventional selection of appropriate materials, has the effect of providing an extremely compact electrical connector. . This also has the effect of reducing costs due to material cost savings and enabling high-density packaging into various devices.

[Brief explanation of the drawing]

Figure 1 is a plan view showing a conventional electrical connector, Figure 2 is a partially cutaway front view, Figure 3 is a bottom view, Figure 4 is an inside view, and Figure 5 is a diagram based on the present invention. A sectional view showing an embodiment of the electrical connector, No. 6
The figure is a perspective view of the male connector, Figure 7 is a sectional view of the male connector, and Figure 8 is a plan view of only the electrical connector.
FIG. 9 is a partially cutaway front view, FIG. 10 is a bottom view, FIG. 11 is a left side view, and FIGS. 12 and 13 are explanatory diagrams showing the operating state of the electrical connector. . 2...Electrical connector, 2a...Terminal plate, 2b...Elastic contact piece, 2c, 2'c...Step part, 2d...Protrusion part, 2e
...notch, 2f...core wire connection part, 2g...wire clamping part, 2h...housing locking hole, 2i, 2'i...side wall, 3...electric wire, 3a...core wire, 4...electric wire, 4a...core wire, 5...male Connector, 5a... Through hole, 5b... Stopper, 5c... Lance, 5d... Locking claw, 5e... Male connector housing, 6... Flexible printed wiring board, 6a... Electrical connection part, 6b... Insulating coating, 7... Female connector , 7a...fitting hole, 7b...contact surface, 7c...
Locking pin, 7d...Female connector housing.

Claims (1)

[Scope of utility model registration request] It consists of a female connector 7 having an electrical connection part 6a, and a male connector 5 which is removably inserted into the female connector 7 and houses an electrical connector 2 having a terminal plate 2a extending in the insertion direction. , the electrical connector 2 is formed by folding back the front end of the terminal plate 2a in the insertion direction, and the folded free end faces the terminal plate 2a at a distance from the female connector 7. A chevron-shaped elastic contact piece 2b that contacts the electrical connection part 6a is provided with a connection end 2f for connecting and fixing the conductive wire 4 at the rear end, and a notch 2e in the middle part, and furthermore, the folded free end Notch steps 2c are provided on both sides, and a protruding tip 2d is formed between these notch steps 2c, and when the elastic contact piece 2b is excessively pressed toward the terminal plate 2a, the protruding tip 2d penetrates into the notch 2e, and the notch step portion 2c of the folded free end engages with the edge of the notch 2e, and the elastic contact piece 2
An electrical connector configured to restrict the expansion of b.