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CN-224216232-U - Automobile plug air tightness testing tool

CN224216232UCN 224216232 UCN224216232 UCN 224216232UCN-224216232-U

Abstract

The utility model provides an automobile plug air tightness testing tool which comprises a testing head, wherein an inserting port for inserting a plug is arranged on the testing head, a testing air cavity and a sealing air cavity are arranged in the testing head, the inserting port is communicated with the sealing air cavity, an inserting port for communicating the testing air cavity with the sealing air cavity is arranged between the testing air cavity and the sealing air cavity, the inserting port and the inserting port are coaxially arranged, a circular air bag is arranged in the sealing air cavity, a first air hole communicated with the testing air cavity is arranged on the testing head, and a second air hole communicated with the air bag is arranged on the testing head. During testing, the plug is inserted from the plug-in port, sequentially enters the second guide pipe and the first guide pipe, then gas is input into the air bag through the air pressure control device, the air bag is inflated to form a sealed package on the outer side wall of the plug, the test head and the plug are placed into water, the air pressure control device inputs gas into the test air cavity again, whether bubbles are generated in the water or not is observed, and whether the air tightness of the plug is qualified is judged.

Inventors

  • YAN LIN
  • CHEN YANGBO

Assignees

  • 浙江可得电子科技有限公司

Dates

Publication Date
20260508
Application Date
20250721

Claims (8)

  1. 1. The automobile plug air tightness testing tool comprises a testing head, wherein an inserting port for inserting a plug is arranged on the testing head, and the automobile plug air tightness testing tool is characterized in that a testing air cavity and a sealing air cavity are arranged in the testing head, the inserting port is communicated with the sealing air cavity, an inserting port for communicating the testing air cavity with the sealing air cavity is arranged between the testing air cavity and the sealing air cavity, the inserting port and the inserting port are coaxially arranged, a circular air bag is arranged in the sealing air cavity, a first air hole communicated with the testing air cavity is arranged on the testing head, and a second air hole communicated with the air bag is arranged on the testing head.
  2. 2. The automobile plug air tightness testing tool according to claim 1, wherein the testing head is of a cylindrical shell structure, a partition board is arranged in the testing head, the two sides of the partition board are respectively provided with a testing air cavity and a sealing air cavity, and the inserting port is arranged on the partition board.
  3. 3. The automobile plug air tightness testing tool according to claim 2, further comprising a first guide pipe coaxially connected with the insertion port, wherein the first guide pipe is located in the sealing air cavity.
  4. 4. The automobile plug air tightness testing tool according to claim 3, further comprising a second guide pipe coaxially connected with the plug-in port, wherein the second guide pipe is located in the sealed air cavity, the first guide pipe and the second guide pipe are arranged at intervals, a sealing area is formed between the first guide pipe and the second guide pipe, and the sealing area is arranged corresponding to the axial middle position of the air bag.
  5. 5. The automobile plug air tightness testing tool according to claim 1, wherein the first guide pipe is internally provided with a limiting screen plate.
  6. 6. The automobile plug air tightness testing tool according to claim 1, wherein the testing head is composed of a first shell and a second shell, a testing air cavity is formed in the first shell, a sealing air cavity is formed in the second shell, the second shell is arranged towards an opening of the first shell, and the second shell and the first shell are detachably connected.
  7. 7. The automobile plug air tightness testing tool according to claim 6, wherein the second shell and the first shell are in threaded connection.
  8. 8. The automobile plug air tightness testing tool according to claim 6, wherein the outer side wall of the air bag is fixedly connected with the inner side wall of the second shell in an adapting mode.

Description

Automobile plug air tightness testing tool Technical Field The utility model relates to the technical field of detection equipment, in particular to an automobile plug air tightness testing tool. Background In the production process of the automobile wire harness, the wire harness is required to be assembled into a plug, and then corresponding devices are connected through the plug. The electrical lines of the motor vehicle have very high demands on the tightness, in particular of the connection points. If the air tightness of the automobile circuit is poor, the waterproof performance of the automobile is poor, the circuit is extremely easy to oxidize, the circuit is damaged or short-circuited, and serious safety problems are finally caused. Therefore, it is important to perform the air tightness test on the harness plug. In the prior art, the utility model patent with the patent application number of CN202020115379.1 discloses a wire plug air tightness detection device. The device passes through sealing head connection atmospheric pressure controlling means and plug, when the test, with plug and sealing head after being connected, put into the aquatic with plug and sealing head, atmospheric pressure controlling means carries gas to sealing head and plug, judges the gas tightness of plug through observing whether there is the bubble to produce in the aquatic. However, in this technical solution, as a key tool component connected to the plug, namely, the sealing head, there is a need to solve the problem of how to achieve a stable and sealed connection with the plug. Some similar tool parts on the market at present either leak test gas due to the fact that connection is not tight when being connected with a plug, and accuracy of a test result is affected, or the production efficiency is reduced due to unreasonable design of a connection structure and complex operation. Disclosure of utility model Aiming at the problems pointed out in the background art, the utility model provides an automobile plug air tightness testing tool for solving the technical problems. The technical scheme of the utility model is realized as follows: The utility model provides an auto plug gas tightness test fixture, includes the test head, is equipped with the interface that supplies plug male in the test head, is equipped with test air cavity and sealed air cavity in the test head, and interface and sealed air cavity intercommunication are equipped with the inserted hole of intercommunication two between test air cavity and the sealed air cavity, and inserted hole and interface coaxial setting are equipped with annular gasbag in the sealed air cavity, are equipped with the first gas pocket with the test air cavity intercommunication on the test head, are equipped with the second gas pocket with the gasbag intercommunication on the test head. The utility model further provides that the test head is of a cylindrical shell structure, a partition board is arranged in the test head, the two sides of the partition board are respectively provided with a test air cavity and a sealing air cavity, and the insertion opening is arranged on the partition board. The utility model is further arranged to further comprise a first guiding tube coaxially connected with the insertion opening, the first guiding tube being located in the sealed air cavity. The utility model further provides a second guide pipe coaxially connected with the plug interface, the second guide pipe is positioned in the sealed air cavity, the first guide pipe and the second guide pipe are arranged at intervals, a sealing area is formed between the first guide pipe and the second guide pipe, and the sealing area is arranged corresponding to the axial middle position of the air bag. The utility model further provides that a limiting screen plate is arranged in the first guide pipe. The utility model further provides that the test head consists of a first shell and a second shell, wherein a test air cavity is formed in the first shell, a sealing air cavity is formed in the second shell, the second shell is arranged towards the first shell, and the second shell is detachably connected with the first shell. The utility model further provides that the second shell and the first shell are in threaded connection. The utility model further provides that the outer side wall of the air bag is fixedly connected with the inner side wall of the second shell in an adapting way. By adopting the technical scheme, the utility model has the beneficial effects that: According to the automobile plug air tightness testing tool, when the automobile plug air tightness testing tool is used for testing, a plug is inserted from a plug-in port and sequentially enters the second guide pipe and the first guide pipe, air is input into the air bag through the air pressure control device, the air bag is inflated to form a sealed package on the outer side wall of the plug, the testing head and the plug are pla