CN117928849A - Plug connector tightness testing device and testing method - Google Patents
Plug connector tightness testing device and testing method Download PDFInfo
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- CN117928849A CN117928849A CN202311792809.8A CN202311792809A CN117928849A CN 117928849 A CN117928849 A CN 117928849A CN 202311792809 A CN202311792809 A CN 202311792809A CN 117928849 A CN117928849 A CN 117928849A
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- pressure
- switch
- vacuum
- valve
- pump
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Links
- 238000012360 testing method Methods 0.000 title claims abstract description 35
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010023230 Joint stiffness Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to the technical field of automobiles and discloses a plug connector tightness testing device and a plug connector tightness testing method. According to the invention, through the cooperation of the design circuit and the gas circuit, standard pressure and vacuum are applied to the connector in the detection process, the leakage quantity of the connector under the pressure within the standard pressure maintaining time is measured under the standard pressure and the vacuum, and whether the product is qualified is judged.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a plug connector tightness testing device and a testing method.
Background
The electrical connection between the wiper motor and the whole automobile is matched and connected by the connector, the protection level of the whole automobile environment to water is very low, but the wire harness connection cannot enter water, if the wire harness connection enters water, short circuit can be caused, the functional components are burnt out, and the automobile body is burnt out if the wire harness connection enters water. The wire harness and the connector which is in butt joint with the wire harness are both designed with waterproof structures and have requirements on butt joint tightness, so that the problem of water inflow cannot occur after the motor is in butt joint with the wire harness, the tightness of connection between the motor and the wire harness is required to be detected in the early approval process, and the situation that water inflow of the wire harness cannot be caused after the motor is connected is ensured.
The wiper for the automobile works in the environment of dust, high temperature and high humidity, so that the characteristics of the connector of the wiper motor are affected after the connector is affected by dirt and temperature and humidity. In order to protect the wiper motor and related devices from dust and rainwater in the life cycle and influence on the whole vehicle circuit, the sealing requirement of the motor connector after being matched with the wire harness is ensured, and the equipment is designed and manufactured for detecting the standard sealing requirement.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a device and a method for testing the tightness of a plug connector.
The invention is realized by adopting the following technical scheme: the utility model provides a plug connector leakproofness testing arrangement, includes force pump, vacuum pump and time-recorder, the pressure valve is connected to the input of force pump, the vacuum valve is connected to the input of vacuum pump, the pressure valve is connected with the one end and the master valve of vacuum valve, the one end of master valve is connected with the manometer, the one end of manometer is connected with the connector.
As a further improvement of the above solution, a pressure relief valve is installed between the main valve and the vacuum valve and the pressure valve connection.
As a further improvement of the above solution, the pressure pump is connected in parallel with the vacuum pump.
As a further improvement of the scheme, the pressure valve and the vacuum valve are electromagnetic valves.
The device for testing the tightness of the plug connector further comprises a main switch, a pressure pump switch, a vacuum pump switch and a timer switch, wherein the main switch is connected with a pressure pump relay and a vacuum starting relay in parallel.
As a further improvement of the above scheme, the pressure pump relay and the vacuum start relay are respectively connected with a pressure pump start switch and a vacuum pump start switch.
The device for testing the tightness of the plug connector further comprises a pressure maintaining switch, and the pressure maintaining switch is connected with the pressure gauge.
As a further improvement of the above scheme, the master switch is used for controlling the on-off of the testing device.
A testing method of a plug connector tightness testing device comprises the following steps:
S1: placing the prepared connector into a saline solution with the depth of 300mm to 400 mm;
S2, a master switch is turned on, a pressure pump starting switch is pressed down, a pressure pump relay is attracted, a vacuum pump is started, a timer switch is turned on when the pressure value reaches a set value of 48Kpa, a timer starts to count, the pressure maintaining switch is turned off after the pressure maintaining time is up, and the pressure pump relay is turned off to stop inflation; when stopping at will, the stop switch is pressed, the pressure pump relay is disconnected, and the work is stopped;
S3: the main switch is turned on, the vacuum pump starting switch is pressed down, the vacuum pump relay is attracted, the vacuum pump is started, when the vacuum value reaches a set value of-48 Kpa, the timer switch is turned on, the timer starts to count time, when the dwell time is up, the normally closed point of the dwell switch is turned on, the vacuum pump switch is turned off, and the vacuumizing is stopped; when stopping at will, the stop switch is pressed, the vacuum pump relay is disconnected, and the vacuum pump stops working.
Compared with the prior art, the invention has the beneficial effects that:
1. Through the cooperation of design circuit and gas circuit, apply standard pressure and vacuum to the connector in the testing process, measure the leakage quantity under the pressure in the standard requirement dwell time under standard pressure and vacuum, judge whether the product is qualified.
2. According to the invention, the pressure difference between the inside and the outside of a tested sample is controlled by automatic vacuumizing or air pressurization, if the pressure difference is matched with an air path through a design circuit, standard pressure and vacuum are applied to the connector in the detection process, the leakage quantity of the connector under the pressure within the standard pressure maintaining time required by the standard pressure and vacuum is measured, whether the product is qualified to leak is judged, the corresponding pressure cannot be maintained by internal pressure, and the tightness of the connector can be detected by detecting the air pressure change. If no leakage exists, the pressure needs to be kept within the set time, the equipment can automatically count the dwell time, and the pressure can be automatically released after the dwell time is up. The detection medium is air, and the connector is not damaged.
Drawings
FIG. 1 is a schematic diagram of the gas circuit control for pressure and vacuum leak testing in accordance with the present invention;
FIG. 2 is a schematic diagram of the electrical control of the pressure and vacuum leak test of the present invention.
Main symbol description:
1 pressure pump, 2 vacuum pump, 3 timer, 4 pressure valve, 5 vacuum valve, 6 total valve, 7 manometer, 8 connector, 9 relief valve, 11 total switch, 12 pressure pump switch, 13 vacuum pump switch, 14 timer switch, 15 pressure pump relay, 16 vacuum pump relay, 17 pressurize switch, 18 pressure pump start switch, 19 vacuum pump start switch.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Examples:
Referring to fig. 1-2, a plug connector tightness testing device of the present embodiment includes a pressure pump 1, a vacuum pump 2 and a timer 3, where the pressure pump 1 is connected in parallel with the vacuum pump 2, an input end of the pressure pump 1 is connected with a pressure valve 4, an input end of the vacuum pump 2 is connected with a vacuum valve 5, a pressure release valve 9 is installed between a main valve 6 and the connection of the vacuum valve 5 and the pressure valve 4, one end of the pressure valve 4 is connected with the main valve 6, the pressure valve 4 and the vacuum valve 5 are both electromagnetic valves, one end of the main valve 6 is connected with a pressure gauge 7, and one end of the pressure gauge 7 is connected with a connector 8.
The test device further comprises a master switch 11, a pressure pump switch 12, a vacuum pump switch 13, a timer switch 14, wherein the master switch 11 is connected with a pressure pump relay 15 and a vacuum starting relay 16 in parallel, the pressure pump relay 15 and the vacuum starting relay 16 are respectively connected with a pressure pump starting switch 18 and a vacuum pump starting switch 19, and the master switch 11 is used for controlling the on-off of the test device.
The pressure gauge also comprises a pressure maintaining switch 17, and the pressure maintaining switch 17 is connected with the pressure gauge 10.
A testing method of a plug connector tightness testing device comprises the following steps: the mated connector 8 was placed in a saline solution 300mm to 400mm deep, and the pressure was slowly increased to the connector 8 until the pressure was 48Kpa, and then held at this pressure for 15S, and the connector periphery was checked for the occurrence of bubbles. The pressure was then adjusted to vacuum, and a vacuum was slowly pulled into the connector until the vacuum was shown to be-48 Kpa, and then held at this pressure for 15S, checking the connector for current leakage.
When the pressure test is carried out, the main switch 11 is turned on, the pressure pump starting switch 18 is pressed, the pressure pump relay 15 is attracted, the vacuum pump 2 is started, when the pressure value reaches a set value, the timer switch 14 is turned on, the timer 3 starts to count time, when the pressure maintaining time is up, the pressure maintaining switch 17 is turned off, and the pressure pump relay 15 is turned off to stop inflation; when stopping at random, the stop switch is pressed, the pressure pump relay 15 is disconnected, and the operation is stopped.
When a vacuum test is carried out, the main switch 11 is turned on, the vacuum pump starting switch 19 is pressed, the vacuum pump relay 16 is attracted, the vacuum pump 2 is started, when the vacuum value reaches a set value, the timer switch 14 is turned on, the timer 3 starts to count time, when the dwell time is up, the normally closed point of the dwell switch 17 is turned on, the vacuum pump switch 13 is turned off, and the vacuumizing is stopped; when the vacuum pump stops at random, the stop switch is pressed, the vacuum pump relay 16 is opened, and the vacuum pump 2 stops working.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (9)
1. The utility model provides a plug connector leakproofness testing arrangement, its characterized in that includes pressure pump (1), vacuum pump (2) and time-recorder (3), pressure valve (4) are connected to the input of pressure pump (1), vacuum valve (5) are connected to the input of vacuum pump (2), pressure valve (4) are connected with one end and total valve (6) of vacuum valve (5), one end of total valve (6) is connected with manometer (7), one end of manometer (7) is connected with connector (8).
2. A plug-in unit tightness test device according to claim 1, characterized in that a pressure relief valve (9) is arranged between the main valve (6) and the connection of the vacuum valve (5) and the pressure valve (4).
3. A plug-in unit tightness test device according to claim 1, characterized in that the pressure pump (1) is connected in parallel with the vacuum pump (2).
4. A plug-in unit tightness test device according to claim 1, characterized in that the pressure valve (4) and the vacuum valve (5) are solenoid valves.
5. A plug connector tightness testing device according to claims 1-4, further comprising a main switch (11), a pressure pump switch (12), a vacuum pump switch (13), a timer switch (14), said main switch (11) being connected in parallel with a pressure pump relay (15) and a vacuum start relay (16).
6. A plug-in unit tightness test device according to claim 5, characterized in that the pressure pump relay (15) and the vacuum start relay (16) are connected with a pressure pump start switch (18) and a vacuum pump start switch (19), respectively.
7. The plug connector tightness testing device according to claim 5, further comprising a pressure maintaining switch (17), wherein the pressure maintaining switch (17) is connected with the pressure gauge (10).
8. A plug connector tightness testing device according to claim 5, wherein the main switch (11) is arranged to control the on-off of the testing device.
9. A method of testing a plug seal testing device according to any one of claims 1 to 8, comprising the steps of:
s1: placing the prepared connector (8) into a saline solution with a depth of 300mm to 400 mm;
S2, a master switch (11) is turned on, a pressure pump starting switch (18) is pressed down, a pressure pump relay (15) is attracted, a vacuum pump (2) is started, a timer switch (14) is turned on when the pressure value reaches a set value of 48Kpa, a timer (3) starts to count, a pressure maintaining switch (17) is turned off after the pressure maintaining time is up, and the pressure pump relay (15) is turned off to stop inflation; when stopping at will, the stop switch is pressed, the pressure pump relay (15) is disconnected, and the work is stopped;
s3: the main switch (11) is turned on, the vacuum pump starting switch (19) is pressed down, the vacuum pump relay (16) is attracted, the vacuum pump (2) is started, when the vacuum value reaches a set value of-48 Kpa, the timer switch (14) is turned on, the timer (3) starts to count, when the pressure maintaining time is up, the normally closed point of the pressure maintaining switch (17) is turned on, the vacuum pump switch (13) is turned off, and the vacuumizing is stopped; when the vacuum pump stops at random, the stop switch is pressed, the vacuum pump relay (16) is disconnected, and the vacuum pump (2) stops working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311792809.8A CN117928849A (en) | 2023-12-25 | 2023-12-25 | Plug connector tightness testing device and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311792809.8A CN117928849A (en) | 2023-12-25 | 2023-12-25 | Plug connector tightness testing device and testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117928849A true CN117928849A (en) | 2024-04-26 |
Family
ID=90749771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311792809.8A Pending CN117928849A (en) | 2023-12-25 | 2023-12-25 | Plug connector tightness testing device and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117928849A (en) |
-
2023
- 2023-12-25 CN CN202311792809.8A patent/CN117928849A/en active Pending
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