CN219475693U - Wire harness terminal withdrawal detection device - Google Patents

Abstract

The utility model relates to a wire harness terminal withdrawal detection device, comprising: the probe in probe needle storehouse, the installation is the switch probe in probe needle storehouse, the switch probe includes: the probe needle warehouse, sliding connection are in probe needle warehouse one end to the switch needle of sheath terminal contact, link firmly in probe needle warehouse other end and with the switch contact pin of probe needle warehouse connection, set up in the probe needle warehouse and be located the stroke return spring between switch needle and the switch contact pin, the stroke return spring is used for driving the homing of switch needle, the distance between switch needle afterbody and the contact pin head position of switch contact pin is the switch stroke, the advantage of the utility model is: the switch probe is adopted to replace the conduction probe, after the switch probe detects that the terminal is retracted, the needle head is sprung after touching the inner wall of the terminal, and the switch probe is broken, so that the terminal is retracted.

Description

Wire harness terminal withdrawal detection device

Technical Field

The utility model relates to the field of automobile wire harness detection, in particular to a wire harness terminal withdrawal detection device.

Background

The automobile wire harness is a component for connecting automobile electronic and electric components and enabling the automobile electronic and electric components to function, current wire harness detection comprises conductivity detection, terminal withdrawal, waterproof detection and the like of the wire harness, and detection of withdrawal of a female end sheath terminal 3 on the market is all carried out by adopting a conduction probe 5 (refer to fig. 1), but the problem of failure in detection of withdrawal of the terminal frequently occurs when the conduction probe 5 detects the sheath terminal 3, the needle heads in the process of detecting the sheath terminal 3 by the conduction probe 5 penetrate into the terminal, and as the condition that the needle heads touch the inner wall of the sheath terminal 3 occurs when the terminal is withdrawn, the needle heads touch the inner wall of the sheath terminal 3 to form a loop to transmit signals, so that the detection of withdrawal of the terminal fails.

Disclosure of Invention

In view of the foregoing, it is an object of the present utility model to provide a wire harness terminal withdrawal detecting device for effectively detecting a terminal withdrawal situation, so as to overcome the above-mentioned drawbacks of the prior art.

The wire harness terminal withdrawal detection device provided by the utility model comprises: the improvement is, probe, the probe of installing in probe storehouse, the probe is the switch probe, the switch probe includes: the device comprises a probe needle library, a switch needle which is connected at one end of the probe needle library in a sliding way and is contacted with a sheath terminal, a switch contact pin which is fixedly connected at the other end of the probe needle library and is connected with the probe needle library, and a travel return spring which is arranged in the probe needle library and is positioned between the switch needle and the switch contact pin, wherein the travel return spring is used for driving the switch needle to return, the distance between the tail of the switch needle and the head of the contact pin of the switch contact pin is the switch travel, the head of the switch needle starts to compress after contacting with the sheath terminal, after the tail of the switch needle contacts with the head of the contact pin of the switch contact pin, the switch probe is conducted to form a loop and can transmit signals, and after the sheath terminal returns, the travel return spring drives the switch needle to return, the compression amount of the switch probe is reduced to a certain size, and the switch probe is disconnected and cannot transmit signals.

Preferably, the switch contact pin is composed of a threaded connection section positioned at the tail part, a probe contact section positioned at the head part and a middle section, wherein the middle section is fixedly connected in a probe pin library, and the probe contact section is positioned in the probe pin library and used for being contacted with the switch needle to form a loop.

Preferably, the threaded connection section is in threaded connection in the switch needle base.

Preferably, the head of the probe contact section has a plum blossom shape.

Preferably, the switch needle head is composed of a needle head section, a needle tail connecting section and an intermediate connecting section, wherein the needle head section is used for being contacted with the sheath terminal, the intermediate connecting section and the needle tail connecting section are arranged in a probe needle library, and the needle tail connecting section is used for being contacted with the switch contact pin.

In the utility model, one end of the travel return spring passes through the needle tail connecting section to be propped against the middle connecting section, and the other end of the travel return spring is propped against the inner clamping seat of the probe needle library.

As the preferable mode of the utility model, the outer wall of the probe needle library is fixedly connected with a probe clamping ring at the position of the switch contact pin.

The utility model has the advantages and positive effects that:

1. according to the utility model, the switch probe is adopted to replace the conduction probe, after the switch probe is adopted to detect the terminal withdrawal, the needle head is sprung up after touching the inner wall of the terminal, and the switch probe is opened, so that the terminal withdrawal can be effectively detected.

2. The switch probe adopts a sectional switch needle and switch contact pin combination mode, and can realize terminal withdrawal detection.

Drawings

Other objects and attainments together with a more complete understanding of the utility model will become apparent and appreciated by referring to the following description taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 is a schematic diagram of a conventional connection between a sheath and a conductive probe.

Fig. 2 is a schematic diagram of a conventional conductive probe structure.

Fig. 3 is a cross-sectional view of a conventional conductive probe structure.

Fig. 4 is a schematic diagram of a connection structure between a sheath and a switch probe according to an embodiment of the utility model.

Fig. 5 is a schematic diagram of a switch probe according to an embodiment of the utility model.

Fig. 6 is a cross-sectional view of a switch probe according to an embodiment of the present utility model.

Reference numerals: switch needle magazine 1, switch probe 2, probe needle magazine 201, switch needle 202, switch stylus 203, travel return spring 204, threaded connection section 205, probe contact section 206, intermediate section 207, needle section 208, tail connection section 209, intermediate connection section 210, sheath terminal 3, sheath 4, conduction probe 5, bakelite block 6, cylinder 7, tracheal joint 8, tracheal tube 9, lead 10, solenoid valve 11, circuit board 12.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

Referring to fig. 1, the wire harness terminal unseating detection device provided by the utility model includes: switch needle storehouse 1, switch probe 2 install on switch needle storehouse 1, switch probe 2 includes: the probe needle library 201, the switch needle 202, the switch contact pin 203 and the travel return spring 204, wherein the opening Guan Zhentou is connected to one end of the probe needle library 201 in a sliding way and is in contact with the sheath terminal 3, the switch contact pin 203 is fixedly connected to the other end of the probe needle library 201 and is connected with the switch needle library 1, the travel return spring 204 is arranged in the probe needle library and is positioned between the switch needle and the switch contact pin, the travel return spring 204 is used for driving the switch needle 202 to return, one end of the travel return spring 204 penetrates through the needle tail connecting section 209 to be propped against the middle connecting section 210, and the other end of the travel return spring 204 is propped against the inner clamping seat of the probe needle library 201. The outer wall of the probe needle library 201 is fixedly connected with a probe clamp ring at the position of the switch contact 203. The distance between the tail of the switch Guan Zhentou 202 and the contact pin head of the switch contact pin 203 is a switch stroke H, the contact pin head of the switch contact pin 202 is in contact with the sheath terminal 3 and then starts to compress, when the tail of the switch Guan Zhentou is in contact with the contact pin head of the switch contact pin 203, the switch probe 2 is conducted to form a loop and can transmit signals, when the sheath terminal 3 is retracted, the stroke return spring 204 drives the switch pin 202 to return, the compression amount of the switch probe 2 is reduced to a certain size, and the switch probe is disconnected and cannot transmit signals.

Referring to fig. 4-6, the switch contact pin 203 of the present utility model is composed of a threaded connection section 205 at the tail, a probe contact section 206 at the head, and an intermediate section 207, wherein the intermediate section 207 is fixedly connected in the probe pin library 201, and the probe contact section 206 is located in the probe pin library 201 for contacting the switch needle 202 to form a loop. The threaded connection section 205 is screwed into the switch pin magazine 1. The head of the probe contact section 206 is in the shape of a plum blossom head. The switch needle 202 is composed of a needle segment 208, a needle tail connecting segment 209 and an intermediate connecting segment 210, wherein the needle segment 208 is used for contacting with the sheath terminal 3, the intermediate connecting segment 210 and the needle tail connecting segment 209 are arranged in the probe needle base 201, and the needle tail connecting segment 209 is used for contacting with the opening Guan Chuzhen 203.

Referring to fig. 4, a plurality of sheath terminals 3 are provided on a sheath 4 of the present utility model. The bakelite block 6 is provided with a sheath 4, and a driving mechanism consisting of an air cylinder 7, an air pipe joint 8 and an air pipe 9 is used for driving the sheath 4. The switch probes 2 are arranged on the switch needle library 1, the tail part of the switch needle library 1 is connected with the electromagnetic valve 11 through a lead 10, and the electromagnetic valve 11 is arranged on the circuit board 12 for detecting the linear speed.

Working principle: the withdrawal of the sheath terminal 3 is detected by the switch probe 2, and when the switch needle 202 contacts the sheath terminal 3 and begins to compress, the switch probe 2 is conducted after the switch needle 202 contacts the switch contact pin 203, a loop is formed, and a signal can be transmitted. When the terminal is in a retreating position, the compression amount of the switch needle 202 is reduced, after the switch needle 202 is separated from the switch contact pin 203, the switch probe 2 can not transmit signals, and the computer can report errors, so that the terminal retreating detection can be realized.

Claims (7)

1. A wire harness terminal withdrawal detection device, comprising: the probe in probe needle storehouse, install probe needle storehouse, its characterized in that, the probe is the switch probe, the switch probe includes: the device comprises a probe needle library, a switch needle which is connected at one end of the probe needle library in a sliding way and is contacted with a sheath terminal, a switch contact pin which is fixedly connected at the other end of the probe needle library and is connected with the probe needle library, and a travel return spring which is arranged in the probe needle library and is positioned between the switch needle and the switch contact pin, wherein the travel return spring is used for driving the switch needle to return, the distance between the tail of the switch needle and the head of the contact pin of the switch contact pin is the switch travel, the head of the switch needle starts to compress after contacting with the sheath terminal, after the tail of the switch needle contacts with the head of the contact pin of the switch contact pin, the switch probe is conducted to form a loop and can transmit signals, and after the sheath terminal returns, the travel return spring drives the switch needle to return, the compression amount of the switch probe is reduced to a certain size, and the switch probe is disconnected and cannot transmit signals.

2. The wire harness terminal withdrawal detection device according to claim 1, wherein the switch contact pin is composed of a threaded connection section positioned at the tail part, a probe contact section positioned at the head part and an intermediate section, the intermediate section is fixedly connected in a probe pin library, and the probe contact section is positioned in the probe pin library and used for being contacted with the switch needle to form a loop.

3. The wire harness terminal unseating detection device of claim 2, wherein the threaded connection section is threaded into the switch pin magazine.

4. The wire harness terminal back position detecting device according to claim 2, wherein the head portion of the probe contact section is in a plum blossom head shape.

5. The harness terminal withdrawal detecting device according to claim 1, wherein the switch pin is composed of a needle section for contacting the sheath terminal, a tail connecting section for contacting the switch pin, and an intermediate connecting section disposed in the probe pin magazine.

6. The wire harness terminal withdrawal detection device according to claim 1, wherein one end of the stroke return spring is propped against the middle connecting section through the tail connecting section, and the other end of the stroke return spring is propped against the inner clamping seat of the probe needle library.

7. The wire harness terminal withdrawal detection device according to claim 1, wherein a probe snap ring is fixedly connected to the outer wall of the probe magazine at the position of the switch contact pin.