Sensor airtightness detection device

Abstract

The utility model discloses a sensor air tightness detection device, comprising a tool frame provided with a mounting groove used for fixing a product to be detected; the clamping device is used for fixing the product; and the detection device comprises an air inlet assembly and a detection assembly, the air inlet assembly is arranged in the jig frame and used for ventilating the product, and the detection assembly is used for detecting the air pressure change in the product. The beneficial effects of the utility model are that automatic clamping and automatic detection of the sensor are realized, the detection efficiency is high, and the accuracy is good.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to an air tightness detection device for sensors. Background Art

[0002] The sensor contains electronic components and must have good sealing to ensure waterproof and dustproof during use, so as to protect the electrical properties of the electronic components. In the prior art, the air tightness of the sensor body is generally tested by immersing it in water, that is, a person holds the sensor to be tested and immerses it in water to visually check whether bubbles are generated. If there are bubbles, it means that the sealing is not good and it is an NG product. If there are no bubbles, it means that the product is OK. There are many defects in this test: (1) After the test is completed, it is necessary to use an air gun to blow away the water, which takes an average of about 20 seconds, which is time-consuming and labor-intensive; (2) If the product leaks but the bubbles are small, it is not easy to see, and it is very easy to misjudge due to subjective factors; (3) The fork body contains components such as crystal oscillators and connecting wires. Immersing in water will inevitably affect its reliability and service life. Therefore, an airtightness detection device is needed. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a sensor air tightness detection device, which does not damage the sensor as a whole, has accurate judgment and high efficiency.

[0004] Specifically, the utility model discloses a sensor air tightness detection device, comprising:

[0005] A fixture frame, provided with a mounting slot for fixing the product to be tested;

[0006] Clamping device for fixing the product;

[0007] The detection device comprises an air intake component and a detection component, wherein the air intake component comprises a connector 32 for ventilating the product, and the detection component is used to detect changes in air pressure in the product.

[0008] The benefit of adopting the above technical solution is that it can realize automatic clamping and automatic detection of the sensor, with high detection efficiency and good accuracy.

[0009] Furthermore, the clamping device includes an electric pressure head arranged on the upper side of the mounting groove and clamping plates arranged on both sides, and the clamping plates are connected to a driving member.

[0010] The benefit of adopting the above technical solution is that the clamping plate and the electric pressure head work together to fix the sensor, so that the sensor position is accurate and convenient for subsequent detection process.

[0011] Furthermore, the air intake assembly includes an air intake pipe, the connector is arranged at one end of the air intake pipe, the connector is connected to the product, and the air intake pipe is connected to an air source.

[0012] Furthermore, the detection component includes an air pressure detector, which is arranged in the fixture frame and connected to the air intake pipe.

[0013] The benefit of adopting the above technical solution is that the air inlet pipe is set to fill gas into the product, and the air pressure detector detects the internal air pressure change. When the change value exceeds the set range, the air tightness does not meet the standard. If the change is within the set range, it meets the standard.

[0014] Furthermore, the electric pressing head includes a pressing plate and a pressing power member, the pressing power member drives the pressing plate to move downward to press the product, and support plates are arranged on both sides of the electric pressing head.

[0015] The benefit of adopting the above technical solution is that the electric pressing head can automatically descend, driven by the downward pressing power member. When the product is placed in place, the electric pressing head descends, and the support plates on both sides play a supporting and guiding role, so that the electric pressing head can press down accurately.

[0016] Furthermore, the connecting head is fixed on the lower surface of the pressing plate.

[0017] The benefit of adopting the above technical solution is that a detection port is provided on the upper side of the sensor. As the pressure plate descends, the connecting head docks with the detection port on the sensor. After detection, the pressure plate rises, and the detected product can be taken out and the next product can be tested. No manual connection is required, and automatic detection is achieved with high detection efficiency.

[0018] Furthermore, the clamping plate is connected to a guide rod, a spring is arranged on the guide rod, and the driving member is arranged in the fixture frame to drive the clamping plate to clamp or release.

[0019] The benefit of adopting the above technical solution is that the setting of the spring can adjust the clamping force of the clamping plate, avoiding the clamping plate clamping too tightly and squeezing the product or not clamping in place and causing the product to be skewed, affecting the detection results.

[0020] Furthermore, the jig frame is also provided with a display, an indicator light and a switch, and the indicator light is provided on the side of the jig frame.

[0021] The benefit of adopting the above technical solution is that the display can show the set standard value of air pressure change and the test value at the same time. When the test result is qualified, the indicator light is green, and when the test result is unqualified, the indicator light is red. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below.

[0023] Figure 1 This is the overall structural diagram of the utility model sensor air tightness detection device

[0024] Figure 2 This is a schematic diagram of the structure of the press plate of the utility model

[0025] The reference numerals in the accompanying drawings are as follows:

[0026] The fixture frame 1; the display 11; the indicator light 12; the switch 13; the clamping device 2; the electric pressing head 21; the pressing plate 211; the pressing power member 212; the clamping plate 22; the supporting plate 23; the guide rod 24; the spring 25; the air intake pipe 3; the valve 31; and the connector 32. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1-2 As shown, the utility model discloses a sensor air tightness detection device, comprising:

[0029] The fixture frame 1 is provided with a mounting groove for fixing the product to be tested;

[0030] A clamping device 2, used to fix the product;

[0031] The detection device comprises an air intake component and a detection component, wherein the air intake component comprises a connector (32) for ventilating the inside of a product, and the detection component is used to detect changes in air pressure inside the product.

[0032] The benefit of adopting the above technical solution is that it can realize automatic clamping and automatic detection of the sensor, with high detection efficiency and good accuracy.

[0033] In some embodiments, the clamping device 2 includes an electric pressure head 21 arranged on the upper side of the mounting groove and clamping plates 22 arranged on both sides. The clamping plates 22 are connected to a driving member, the clamping plates 22 are relatively arranged, and are provided with a clamping portion, which is in contact and fixed with the product.

[0034] The clamping plate 22 is connected to a guide rod 24, two of which are arranged side by side. A spring 25 is sleeved on the guide rod 24, and the clamping plate 22 slides on the guide rod 24. The side of the spring 25 abuts against the clamping plate 22. The driving member is arranged inside the fixture frame 1, and can be a cylinder or a screw motor linear module, etc., to drive the clamping plate 22 to clamp the product or release it.

[0035] The benefit of adopting the above technical solution is that the setting of the spring 25 can adjust the clamping force of the clamping plate 22, avoiding the clamping plate 22 clamping too tightly and squeezing the product or not clamping in place and causing the product to be skewed, thereby ensuring accurate detection results.

[0036] The clamping plate 22 and the electric pressure head 21 work together to fix the sensor, so that the sensor is accurately positioned, which is convenient for the subsequent detection process.

[0037] In some embodiments, the air intake assembly includes an air intake pipe 3, the connector 32 is arranged at one end of the air intake pipe 3, the connector 32 is connected to the product, the air intake pipe 3 is connected to an air source, and the air intake pipe 3 is also connected to a valve 31, which is arranged on the outside of the fixture frame 1 to control the ventilation time and ventilation volume of the air intake pipe 3, which is suitable for the detection of different products.

[0038] In some embodiments, the detection component includes an air pressure detector, which is disposed in the fixture frame 1 and connected to the air inlet pipe 3 .

[0039] The benefit of adopting the above technical solution is that the air inlet pipe 3 is set to fill the product with gas, and the air pressure detector detects the internal air pressure change. When the change value exceeds the set range, the air tightness does not meet the standard. If the change is within the set range, it meets the standard.

[0040] In some embodiments, the electric pressing head 21 includes a pressing plate 211 and a pressing power member 212. The pressing power member 212 drives the pressing plate 211 to move downward to press the product. Support plates 23 are arranged on both sides of the electric pressing head 21. The pressing power member 212 uses a cylinder or an electric telescopic rod to drive the pressing plate 211 to move up and down. An in-position sensor is also installed on the lower surface of the pressing plate 211. When it senses that the product is in place, the electric pressing head 21 descends, and the support plates 23 on both sides play a supporting and guiding role, so that the electric pressing head 21 can press down accurately.

[0041] The connector 32 is fixed on the lower surface of the pressing plate 211, and a detection port is provided on the upper side of the sensor. The air intake pipe 3 is a spiral pipe, and a groove is provided in the support plate 23. The air intake pipe 3 passes through the groove and extends from the upper part of the support plate 23, which can reduce the leakage of the air pipe and increase the appearance. At the same time, when the connector 32 moves up and down with the pressing plate 211, since the air intake pipe 3 is spiral and can be extended and retracted, it will not cause stretching to the air intake pipe 3 itself, thereby extending the service life of the air intake pipe 3. The connector 32 is connected to the detection port on the sensor as the pressing plate 211 descends. After the detection, the pressing plate 211 rises, and the product that has been detected can be taken out to detect the next product. No manual connection is required, and automatic detection is realized with high detection efficiency.

[0042] In some embodiments, the jig frame 1 is further provided with a display 11, an indicator light 12 and a switch 13. The display 11 not only has a display function, but also has a button to adjust the intake pressure to achieve detection of sensors of different models. The indicator light 12 is provided on the front side of the jig frame 1, including a red light and a green light. When the test result is a good product, the green light is on, and when the test result is unqualified, the red light is on.

[0043] The benefit of adopting the above technical solution is that the display 11 can display the set standard value of air pressure change and the test value at the same time. When the test result is qualified, the indicator light 12 lights up green, and when the test result is unqualified, the indicator light 12 lights up red.

[0044] During the testing process, the worker first places the product to be tested on the lower side of the electric pressure head 21, turns on the switch 13, the electric pressure head 21 descends, the clamping plate 22 clamps the product, the connector 32 is connected to the product to be tested, and then gas is filled into the product. Then the air pressure detector detects the internal air pressure change. If the change value is within the set range, it means that the product is airtight and qualified. The test value is displayed on the display 11, and the green light is on, indicating that it is a good product. If the air pressure change value exceeds the set range, it means that the product is unqualified for airtightness, and the red light is on. The test result is more intuitive. The entire testing device has a simple structure, high detection efficiency, and good accuracy. It replaces the manual detection method in the prior art and has good industrial promotion value and prospects.

[0045] For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the utility model, which all fall within the protection scope of the utility model.

Claims

1. A sensor air tightness detection device, characterized in that: include: A fixture frame (1) is provided with a mounting groove for fixing the product to be tested; A clamping device (2) for fixing the product; The detection device comprises an air intake component and a detection component, wherein the air intake component comprises a connector (32) for ventilating the inside of a product, and the detection component is used to detect changes in air pressure inside the product.

2. The sensor air tightness detection device according to claim 1, characterized in that: The clamping device (2) comprises an electric pressure head (21) arranged on the upper side of the installation groove and clamping plates (22) arranged on both sides, and the clamping plates (22) are connected to a driving member.

3. The sensor air tightness detection device according to claim 2, characterized in that: The air intake assembly comprises an air intake pipe (3), the connector (32) is arranged at one end of the air intake pipe (3), the connector (32) is connected to the product, and the air intake pipe (3) is connected to an air source.

4. The sensor air tightness detection device according to claim 3, characterized in that: The detection component comprises an air pressure detector, which is arranged in the fixture frame (1) and connected to the air intake pipe (3).

5. The sensor air tightness detection device according to claim 3, characterized in that: The electric pressing head (21) comprises a pressing plate (211) and a pressing power member (212); the pressing power member (212) drives the pressing plate (211) to move downward to press the product; and support plates (23) are provided on both sides of the electric pressing head (21).

6. The sensor air tightness detection device according to claim 5, characterized in that: The connecting head (32) is fixed on the lower surface of the pressing plate (211).

7. The sensor air tightness detection device according to claim 2, characterized in that: The clamping plate (22) is connected to a guide rod (24), a spring (25) is arranged on the guide rod (24), and the driving member is arranged in the fixture frame (1) to drive the clamping plate (22) to clamp or release.

8. The sensor air tightness detection device according to claim 1, characterized in that: The jig frame (1) is also provided with a display (11), an indicator light (12) and a switch (13), wherein the indicator light (12) is provided on a side of the jig frame (1).

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