JPH08306423A - Connector having probe inserting hole - Google Patents

Abstract

PURPOSE: To detect incomplete insertion of a terminal metal fitting by adjusting the depth of a recess, by inserting a probe by forming the recess on the front end of a surface on which a resin lance is not formed. CONSTITUTION: When a resin lance 22 is provided in a cavity 21, a recess 21b having a prescribed depth into which a probe 50 can be inserted, is formed in an opening side end part of a surface on which this resin lance 22 is not formed. Therefore, when a female side terminal metal fitting 60 is not inserted up to a normal position, since the probe 50 cannot be inserted only up to the inner part of the recess 21b, it cannot electrically continue with the female side terminal metal fitting 60, so that incomplete insertion can be detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector with a probe insertion hole, and more particularly to a connector with a probe insertion hole that can be inspected by applying a probe from the front end of a cavity.

[0002]

2. Description of the Related Art Conventionally, as this type of connector with a probe insertion hole, a waterproof connector shown in FIGS. 6 to 8 has been known. A female connector 1 shown in the figure is a substantially cylindrical main body 3 having a plurality of cavities 2 for accommodating and holding a female terminal fitting 7, and a main body 3 integrally formed with the main body 3. A tubular hood portion 4 surrounding the portion 3 and a retainer 5 formed in a cap shape for covering the front surface side of the main body portion 3 and having a communication window 5a on the opening surface of the cavity 2 are configured. The cavity 2 of the main body 3 is formed in a rectangular tube shape, and a resin lance 6 is formed on one surface thereof as shown in FIG. The resin lance 6 is provided with an arm portion 6a extending in the axial direction of the cavity 2 and a wedge-shaped projection 6b protruding toward the inside of the cavity 2 at the tip of the arm portion 6a to form the arm portion 6a. Due to the structure of the mold, the recess 2a is always formed on the opening-side end of the cavity 2 on the side where the resin lance 6 is formed.

On the other hand, in the inspection step after the assembling step, the probe 8 is inserted into the cavity 2 to inspect whether the female side metal terminal 7 is inserted into the cavity 2 or not. Strike. Here, when inserting the probe 8 into the cavity 2, the probe 8 is abutted against the edge portion of the female-side terminal fitting 7 through the recess 2a formed for molding the resin lance 6.

[0004]

In the above-mentioned conventional connector with a probe insertion hole, the probe 8 is inserted through the recess 2a formed to mold the resin lance 6. From this recess 2a to the resin lance 6. Has no structure, and the probe 8 is inserted relatively deeply. Therefore, there is a problem that the probe 8 arrives even if the female-side terminal fitting 7 is not inserted to a proper position, and the probe 8 is electrically connected and half insertion cannot be detected.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a connector with a probe insertion hole capable of detecting half insertion of a terminal fitting.

[0006]

In order to achieve the above-mentioned object, the invention according to claim 1 is a connector with a probe insertion hole, which is capable of inspecting by abutting a probe after inserting a terminal fitting, A resin lance is formed on one surface inside the rectangular cylindrical cavity, and a recess for inserting a probe is formed at a predetermined depth at the opening edge portion of the surface where the resin lance is not formed.

According to a second aspect of the present invention, in the connector with a probe insertion hole according to the first aspect, the recess is formed to a depth which substantially coincides with the front end of the regular insertion position of the terminal fitting.

[0008]

In the invention according to claim 1 configured as described above, the resin lance is formed on one surface in the rectangular cylindrical cavity, but the opening edge portion of the surface where the resin lance is not formed is formed. A recess for inserting the probe is formed to have a predetermined depth. Since there is no resin lance on the surface on the side where the probe is inserted, it is possible to form a recess having a predetermined depth in the insertion direction. When the terminal fitting is half-inserted and not inserted into the same recess, the probe hits the back of the recess and cannot establish electrical connection with the terminal fitting. Of course, if the terminal fitting is inserted up to the proper position, the probe will come into contact with the terminal fitting before it hits the inner part of the recess, and the probe will conduct.

Further, in the invention according to claim 2 configured as described above, since the recess has a depth which substantially coincides with the front end of the regular insertion position of the terminal fitting, the terminal fitting is inserted to the regular insertion position. If so, the probe will come into contact with the terminal fitting before it hits the back of the recess, and even if the terminal fitting is slightly displaced rearward from the normal insertion position, the probe will hit the back of the recess and conduct electricity. Absent.

[0010]

As described above, according to the present invention, the probe is inserted by forming the recess on the front end of the surface where the resin lance is not formed. Therefore, the depth of the recess is adjusted to half-insert the terminal fitting. It is possible to provide a connector with a probe insertion hole capable of detecting.

According to the second aspect of the present invention, when the terminal fitting is not inserted to the proper position, it can be reliably detected that the terminal fitting is half-inserted.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing a waterproof connector to which a connector with a probe insertion hole according to an embodiment of the present invention is applied, FIG. 2 is a front view, and FIG. 3 is a partial sectional view. The female connector 10 shown in FIG.
A substantially tubular body portion 20 having a plurality of cavities 21 formed therein
And the body portion 2 formed integrally with the body portion 20.
It is composed of a tubular hood portion 30 that surrounds 0, and a retainer 40 that is formed in a cap shape that covers the front surface side of the main body portion 20 and has a communication window 41 formed in the opening surface of the cavity 21.

The cavity 21 of the main body 20 is formed in a rectangular tube shape, and as shown in FIG. 3, a resin lance 22 is formed in the middle of the upper surface of the inner peripheral surface. The resin lance 22
The cavity 21 is provided with an arm portion 22a which is oriented in the axial direction and extends in an arm shape continuous to the upper surface of the inner peripheral surface on the rear end side. 22b is formed. Due to the structure of the mold for forming the arm portion 22a, the recess 21a is formed on the opening side end portion of the cavity 21 on the side where the resin lance 22 is formed. Separately, a recess 21b having a depth to a position slightly lower than the tip is also formed on the opening side end of the lower surface where the resin lance 22 is not formed. Then, in the retainer 40, the depression 2 on the lower surface of the communication window 41
The notch 41a is formed in the front portion of the probe 1b.
0 can be inserted.

In this embodiment, the female connector 10 is used.
Further, the hood portion 30 and the retainer 40 are also provided, but these are not necessarily required, and the main body portion 20 in which the cavity 21 is formed is sufficient. Further, although the recess 21b is formed on the surface opposite to the surface on which the resin lance 22 is formed, it does not necessarily have to be the opposite surface and may be any surface on which the resin lance 22 is not formed. Next, the operation of this embodiment having the above configuration will be described. Insert the female-side terminal fitting 60 into the cavity 21, and insert the retainer 4 from the front of the main body 20.
Wear 0. When the female-side terminal fitting 60 is inserted to the proper position, the front end edge portion projects further forward than the back of the recess 21b as shown in FIG. Therefore, even if the probe 50 is inserted through the notch 41a and the recess 21b of the retainer 40, the probe 50 comes into contact with the edge portion of the female-side terminal fitting 60 before hitting the back of the recess 21b.

However, if the female terminal fitting 60 is not inserted to the proper position, the front end is recessed 2 as shown in FIG.
It is in a state where it does not project further than the back of 1b. Therefore, when the probe 50 is inserted through the notch 41a of the retainer 40 and the recess 21b, the probe 50 hits the back of the recess 21b and cannot contact the female-side terminal fitting 60. Therefore, electrical continuity is lost, and this can be electrically detected to determine the half-inserted state.

As described above, when the cavity 21 has the resin lance 22, a recess having a predetermined depth that allows the probe 50 to be inserted into the opening-side end portion of the surface on which the resin lance 22 is not formed is formed. By forming 21b, the probe 50 can be inserted only to the depth of the recess 21b when the female side terminal fitting 60 is not inserted to the proper position, so that there is no electrical connection with the female side terminal fitting 60 and half insertion is detected. can do.

[Brief description of drawings]

FIG. 1 is a perspective view of a waterproof connector to which a connector with a probe insertion hole according to an embodiment of the present invention is applied.

FIG. 2 is a front view of the waterproof connector.

FIG. 3 is a partial cross-sectional view of the waterproof connector.

FIG. 4 is a cross-sectional view of a state in which a probe is inserted when the terminal fitting is inserted to a regular position in the waterproof connector.

FIG. 5 is a cross-sectional view of the waterproof connector in which the probe is inserted with the terminal fitting half-inserted.

FIG. 6 is a perspective view of a waterproof connector to which a conventional connector with a probe insertion hole is applied.

FIG. 7 is a front view of the waterproof connector.

FIG. 8 is a partial cross-sectional view of the waterproof connector.

[Explanation of symbols]

 10 ... Female side connector 20 ... Main body part 21 ... Cavity 21b ... Recess 22 ... Resin lance 30 ... Hood part 40 ... Retainer 41 ... Communication window 41a ... Notch 50 ... Probe 60 ... Female side terminal fitting

Front page continuation (72) Inventor Kiyofumi Ichida 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd.

Claims (2)

[Claims] 1. A connector with a probe insertion hole capable of inspecting by hitting a probe after inserting a terminal fitting, wherein a resin lance is formed on one surface in a rectangular cylindrical cavity, and the same resin is used. A connector with a probe insertion hole, characterized in that a recess for inserting a probe is formed at a predetermined depth at an opening edge portion of a surface not forming a lance. 2. The connector with a probe insertion hole according to claim 1, wherein the recess has a depth that substantially coincides with a front end of a regular insertion position of the terminal fitting.