Communication interface negative pressure airtight testing device

Abstract

The utility model relates to a negative pressure air tightness testing device for a communication interface, which comprises a profiling air tightness jig 1, a double-channel air flow control electromagnetic valve 2 connected with the profiling air tightness jig 1, a negative pressure generator 3 connected with the double-channel air flow control electromagnetic valve 2, and a single-channel air flow control electromagnetic valve 4 connected with the negative pressure generator 3, the air pressure control switch 5 is connected with the single-channel air flow control electromagnetic valve 4, and the air pressure control switch 5 is connected with the profiling airtight jig 1; the double-channel airflow control electromagnetic valve 2 is connected with an air pump port 10; the device further comprises a programmable logic controller 6 which is connected with the profiling airtight jig 1, the double-channel airflow control electromagnetic valve 2, the single-channel airflow control electromagnetic valve 4 and the air pressure control switch 5. The beneficial effect of the utility model is that whether the air tightness of the connector is qualified can be rapidly detected.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a negative pressure airtightness testing device for a communication interface. Background Art

[0002] At present, new energy vehicles are developing rapidly, and many new types of connectors are used in new energy vehicles. The production of connectors requires a series of testing devices to ensure that the products meet the standards.

[0003] The applicant currently needs to test a 6188-6160 waterproof through-cylinder series connector, which is used in a project of Ideal pure electric new energy vehicles and a project of Xiaopeng pure electric new energy vehicles. The customer has put forward airtightness requirements for the product, but there is currently no such testing device.

[0004] Therefore, it is urgent to develop a communication interface negative pressure airtightness testing device that can quickly detect the airtightness of the connector. Utility Model Content

[0005] The utility model aims to solve one of the above technical problems at least to a certain extent.

[0006] To this end, the first purpose of the utility model is to provide a communication interface negative pressure airtightness testing device, which can quickly detect the airtightness of the connector.

[0007] To achieve the above-mentioned purpose, the first embodiment of the utility model discloses a communication interface negative pressure airtight testing device, including: a contoured airtight fixture 1, a dual-channel airflow control solenoid valve 2 connected to the contoured airtight fixture 1, a negative pressure generator 3 connected to the dual-channel airflow control solenoid valve 2, a single-channel airflow control solenoid valve 4 connected to the negative pressure generator 3, and an air pressure control switch 5 connected to the single-channel airflow control solenoid valve 4, the air pressure control switch 5 is connected to the contoured airtight fixture 1; the dual-channel airflow control solenoid valve 2 is connected to the air pump port 10; and also includes a programmable logic controller 6 connected to the contoured airtight fixture 1, the dual-channel airflow control solenoid valve 2, the single-channel airflow control solenoid valve 4, and the air pressure control switch 5.

[0008] In addition, the communication interface negative pressure airtightness testing device according to the above technical solution of the utility model may also have the following additional technical features:

[0009] Optionally, it further includes a signal output relay 7 connected to the programmable logic controller 6 , and a display device 8 connected to the signal output relay 7 .

[0010] Optionally, it also includes a test bench 9, which exposes the test installation end of the contoured airtight fixture 1 to the outside; exposes the control end of the air pressure control switch 5 to the outside; and encloses the dual-channel airflow control solenoid valve 2, the negative pressure generator 3 and the single-channel airflow control solenoid valve 4 inside.

[0011] Optionally, the dual-channel airflow control solenoid valve 2 includes a first solenoid valve 21, a second solenoid valve 22, a first air inlet 23 and a first electrical connection part 24; the first solenoid valve 21 is connected to the contoured airtight fixture 1, the second solenoid valve 22 is connected to the negative pressure generator 3, the first air inlet 23 is connected to the air pump port 10, and the first electrical connection part 24 is connected to the programmable logic controller 6; the single-channel airflow control solenoid valve 4 includes a third solenoid valve 41, a second air inlet 42 and a second electrical connection part 43; the third solenoid valve 41 is connected to the negative pressure generator 3, the second air inlet 42 is connected to the air pressure control switch 5, and the second electrical connection part 43 is connected to the programmable logic controller 6.

[0012] Optionally, the programmable logic controller 6 includes a timer.

[0013] The beneficial effect of the utility model is that it can quickly detect whether the air tightness of the connector is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional negative pressure airtightness testing device for a communication interface provided by an embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure connection of a communication interface negative pressure airtightness testing device provided by an embodiment of the utility model;

[0016] Figure 3 It is a stereoscopic diagram of a dual-channel airflow control solenoid valve of a communication interface negative pressure airtightness test device provided by an embodiment of the utility model;

[0017] Figure 4 It is a stereoscopic diagram of a single-channel airflow control solenoid valve of a communication interface negative pressure airtightness testing device provided by an embodiment of the utility model.

[0018] Reference numerals:

[0019] 1-contact airtight fixture, 2-dual-channel airflow control solenoid valve, 21-first solenoid valve, 22-second solenoid valve, 23-first air inlet, 24-first electrical connection part, 3-negative pressure generator, 4-single-channel airflow control solenoid valve, 41-third solenoid valve, 42-second air inlet, 43-second electrical connection part, 5-air pressure control switch, 6-programmable logic controller, 7-signal output relay, 8-display device, 9-test bench, 10-air pump port. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or components / elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] The following describes the communication interface negative pressure airtightness testing device according to an embodiment of the utility model in conjunction with the accompanying drawings.

[0022] Figure 1 It is a three-dimensional negative pressure airtightness testing device for a communication interface provided by an embodiment of the utility model; Figure 2 It is a schematic diagram of the internal structure connection of a communication interface negative pressure airtightness testing device provided by an embodiment of the utility model; Figure 3 It is a stereoscopic diagram of a dual-channel airflow control solenoid valve of a communication interface negative pressure airtightness test device provided by an embodiment of the utility model; Figure 4 1 is a three-dimensional diagram of a single-channel airflow control solenoid valve of a communication interface negative pressure airtightness test device provided by an embodiment of the present utility model. Figure 1-4 As shown, the communication interface negative pressure airtight testing device includes: a contoured airtight fixture 1, a dual-channel airflow control solenoid valve 2 connected to the contoured airtight fixture 1, a negative pressure generator 3 connected to the dual-channel airflow control solenoid valve 2, a single-channel airflow control solenoid valve 4 connected to the negative pressure generator 3, and an air pressure control switch 5 connected to the single-channel airflow control solenoid valve 4, the air pressure control switch 5 is connected to the contoured airtight fixture 1; the dual-channel airflow control solenoid valve 2 is connected to the air pump port 10; and also includes a programmable logic controller 6 connected to the contoured airtight fixture 1, the dual-channel airflow control solenoid valve 2, the single-channel airflow control solenoid valve 4, and the air pressure control switch 5.

[0023] Specifically, the communication interface negative pressure airtightness test device of the present application is composed of an airway loop and a circuit. The airway loop includes the following connected in sequence: a profiling airtightness fixture 1-a dual-channel airflow control solenoid valve 2-a negative pressure generator 3-a single-channel airflow control solenoid valve 4-an air pressure control switch 5-a profiling airtightness fixture 1, in addition, the dual-channel airflow control solenoid valve 2 is also connected to an air pump port 10, and the air pump port 10 can be connected to an external vacuum pump. When the dual-channel airflow control solenoid valve 2 is opened, the vacuum pump draws air into the airway loop; the circuit includes a programmable logic controller 6, and components connected to the programmable logic controller 6: a profiling airtightness fixture 1, a dual-channel airflow control solenoid valve 2, a single-channel airflow control solenoid valve 4 and an air pressure control switch 5, and the connected components are controlled by the programmable logic controller 6 to perform actions (such as opening or closing the solenoid valve) or receive information signals of the components (such as receiving air pressure information from the air pressure control switch 5).

[0024] The steps of the communication interface negative pressure airtight test device of the present application when performing detection are: first, insert the plug to be tested into the contoured airtight fixture 1, press the start switch of the contoured airtight fixture 1 to close its switch needle, and the contoured airtight fixture 1 outputs a signal to the programmable logic controller 6 to control the solenoid valve to open for air extraction; then, the air pressure control switch 5 monitors the air pressure value in the airway; when it is detected that the air pressure value in the airway is greater than the first set value, a signal is output to the programmable logic controller 6, and the programmable logic controller 6 sends a control signal to control the closing of the vacuum pump, the closing of the dual-channel airflow control solenoid valve 2 and the single-channel airflow control solenoid valve 4, so that a closed space is formed inside the airway, and the pressure-maintaining self-leakage test is started; then, the timer is started, and after counting for a certain time (such as 5 seconds), the air pressure control switch 5 is controlled to detect the air pressure value. When it is within the second set value range, it is judged to be qualified; when it is outside the second set value range, it is judged to be unqualified.

[0025] It should be noted that the air pressure control switch 5 can be a Jiance air pressure control switch of model JC-100, which has a display screen that can display the air pressure value detected in the airway. When judging whether the air pressure value is qualified, the reading on the air pressure control switch 5 can be observed and judged, and a buzzer, indicator light or display screen connected to the programmable logic controller 6 can also be set to indicate whether it is qualified.

[0026] According to the communication interface negative pressure airtightness test device of the utility model, a special jig, a contoured airtightness jig 1, can be used to specifically detect the airtightness of a 6188-6160 type waterproof cylinder series connector. The device has a simple structure and convenient and fast detection operation. When the product is updated, only the jig can be updated, and the threshold of the monitoring air pressure in the programmable logic controller 6 can be modified to complete the upgrade of the production line.

[0027] According to an embodiment of the present invention, the device further includes a signal output relay 7 connected to the programmable logic controller 6 , and a display device 8 connected to the signal output relay 7 .

[0028] Specifically, in order to make the test results more eye-catching and easy to identify, improve the convenience of the test operation and reduce the difficulty of operation, a display device 8 can be set to display the test results of the product. When it is judged to be qualified, the display device 8 displays the words "qualified" or "OK"; when it is judged to be unqualified, the display device 8 displays the words "unqualified" or "NG".

[0029] The qualified signal can be output through the relay 7: when it is judged to be qualified, the programmable logic controller 6 controls the signal output relay 7 to be energized, and the signal output relay 7 outputs a closing signal to the display device 8, and the display device 8 displays the qualified product information after receiving the closing signal; when it is judged to be unqualified, the signal output relay 7 times out to receive the control signal, and the timeout waiting time can be 5 seconds, then the display device 8 displays the unqualified product information.

[0030] According to one embodiment of the utility model, it also includes a test bench 9, which exposes the test installation end of the contoured airtight fixture 1 to the outside; exposes the control end of the air pressure control switch 5 to the outside; and encloses the dual-channel airflow control solenoid valve 2, the negative pressure generator 3 and the single-channel airflow control solenoid valve 4 inside.

[0031] Specifically, in order to prevent the connecting pipes in the airway from being touched during operation, causing air leakage or other problems that are not conducive to detection, the components of the airway can be covered inside by the test bench 9, leaving only the contoured airtight fixture 1 and the air pressure control switch 5 that need to be operated exposed outside.

[0032] According to one embodiment of the utility model, the dual-channel airflow control solenoid valve 2 includes a first solenoid valve 21, a second solenoid valve 22, a first air inlet 23 and a first electrical connection part 24; the first solenoid valve 21 is connected to the contoured airtight fixture 1, the second solenoid valve 22 is connected to the negative pressure generator 3, the first air inlet 23 is connected to the air pump port 10, and the first electrical connection part 24 is connected to the programmable logic controller 6; the single-channel airflow control solenoid valve 4 includes a third solenoid valve 41, a second air inlet 42 and a second electrical connection part 43; the third solenoid valve 41 is connected to the negative pressure generator 3, the second air inlet 42 is connected to the air pressure control switch 5, and the second electrical connection part 43 is connected to the programmable logic controller 6.

[0033] Specifically, this embodiment further introduces the structure and connection method of the dual-channel airflow control solenoid valve 2 and the single-channel airflow control solenoid valve 4.

[0034] According to one embodiment of the present invention, the programmable logic controller 6 includes a timer.

[0035] Specifically, the timer is used to enable the programmable logic controller 6 to accurately count the seconds, so as to control the air pressure control switch 5 to detect the air pressure, or control whether the signal output relay 7 is energized.

[0036] The above embodiments are preferred implementation schemes of the present application. In addition, the present application may also be implemented in other ways. Any obvious replacement without departing from the concept of the present application is within the protection scope of the present application.

Claims

1. A communication interface negative pressure airtightness test device, characterized in that: include: A contour-forming airtight fixture (1), a dual-channel airflow control solenoid valve (2) connected to the contour-forming airtight fixture (1), a negative pressure generator (3) connected to the dual-channel airflow control solenoid valve (2), a single-channel airflow control solenoid valve (4) connected to the negative pressure generator (3), and an air pressure control switch (5) connected to the single-channel airflow control solenoid valve (4), wherein the air pressure control switch (5) is connected to the contour-forming airtight fixture (1); the dual-channel airflow control solenoid valve (2) is connected to an air pump port (10); It also includes a programmable logic controller (6) connected to the contoured airtight fixture (1), the dual-channel airflow control solenoid valve (2), the single-channel airflow control solenoid valve (4), and the air pressure control switch (5).

2. A communication interface negative pressure airtightness testing device according to claim 1, characterized in that: It also includes a signal output relay (7) connected to the programmable logic controller (6), and a display device (8) connected to the signal output relay (7).

3. A communication interface negative pressure airtightness testing device according to claim 1, characterized in that: The test bench also includes a test bench (9), wherein the test installation end of the contoured airtight fixture (1) is exposed to the outside; the control end of the air pressure control switch (5) is exposed to the outside; and the dual-channel airflow control solenoid valve (2), the negative pressure generator (3) and the single-channel airflow control solenoid valve (4) are enclosed inside.

4. A communication interface negative pressure airtightness testing device according to claim 1, characterized in that: The dual-channel airflow control solenoid valve (2) comprises a first solenoid valve (21), a second solenoid valve (22), a first air inlet (23) and a first electrical connection portion (24); the first solenoid valve (21) is connected to the contoured airtight fixture (1), the second solenoid valve (22) is connected to the negative pressure generator (3), the first air inlet (23) is connected to the air pump port (10), and the first electrical connection portion (24) is connected to the programmable logic controller (6); The single-channel airflow control solenoid valve (4) comprises a third solenoid valve (41), a second air inlet (42) and a second electrical connection portion (43); the third solenoid valve (41) is connected to the negative pressure generator (3), the second air inlet (42) is connected to the air pressure control switch (5), and the second electrical connection portion (43) is connected to the programmable logic controller (6).

5. A communication interface negative pressure airtightness testing device according to claim 1, characterized in that: The programmable logic controller (6) comprises a timer.

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