Air tightness testing device for embedded sensor

By designing an embedded sensor airtightness test device with a detachable fixing seat and a pressing device, the problem of poor versatility in the prior art is solved, and the adaptation of different styles of embedded sensors is realized, and the versatility and efficiency of the test device are improved.

CN222887598UActive Publication Date: 2025-05-20GUANGZHOU YUCHENG FIRE TECH
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Patent Information

Application Number
CN202421687322.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Priority Date
2024-03-14
Filing Date
2024-07-16
Publication Date
2025-05-20
Estimated Expiration
2034-07-16

AI Technical Summary

Technical Problem

The existing embedded sensor airtightness test devices have poor versatility and cannot be adapted to different styles of embedded sensors.

Method used

An embedded sensor airtightness test device is designed, including a detachable fixing seat and a pressing device, and the embedded sensors of different styles are adapted to different styles of embedded sensors by replacing fixed seats of different specifications.

Benefits of technology

The versatility of the airtightness test device is improved, allowing it to be adapted to different styles of embedded sensors, reducing the type and cost of the test device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model is applicable to the technical field of air tightness test fixtures, and particularly relates to an embedded sensor air tightness test device, which comprises a rack, a pressing device and a detection device, the lower end of the rack is provided with a first mounting groove, the detection device comprises a fixed seat, the fixed seat is detachably mounted in the first mounting groove, and the pressing device is arranged in the first mounting groove. The upper end of the fixing seat is provided with an air outlet matched with an embedded sensor to be tested, the embedded sensor is installed at the upper end of the fixing seat, and the pressing device abuts against the upper end of the embedded sensor from top to bottom. According to the air tightness testing device for the embedded sensor, the fixed seat is detachably mounted in the first mounting groove, and the fixed seats of different specifications can be replaced by dismounting the fixed seat so as to adapt to detection of embedded sensors of different styles, so that the universality of the air tightness testing device is improved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of airtightness test fixtures, and particularly relates to an airtightness test device for an embedded sensor. Background Art

[0002] Airtightness inspection is a test method that simulates the usage state of the device to be tested, presses compressed air into the device to be tested, and checks for leaks by using the pressure difference between the inside and outside of the device. An airtightness detector is required for airtightness inspection, and it is a device specifically used for detecting the airtightness of cavity mechanical products.

[0003] Based on the above principle, an airtightness test device specifically for embedded sensors has been widely used. Currently, the structures of the airtightness test devices for embedded sensors produced by each manufacturer are generally the same, and they all have the same problem: that is, each type of embedded sensor requires a dedicated test device. Due to the variety of sensor models, this results in a large number of test devices. Therefore, how to improve the versatility of this airtightness test device so that it can adapt to the airtightness inspection of different models of embedded sensors is a technical problem that the industry urgently needs to solve. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an airtightness test device for an embedded sensor, aiming to solve the technical problem of poor versatility of the existing airtightness test device for an embedded sensor.

[0005] The technical solution of the utility model is realized as follows: an airtightness test device for an embedded sensor, including a frame, a pressing device, and a detection device.

[0006] The frame is set to be roughly arched, with a first installation groove provided at the lower end of its opening, and the pressing device is provided at the upper end of its opening.

[0007] The detection device includes a fixed seat, a gas pressure gauge, a pressure box, a one-way valve, and a pumping air bag. The pumping air bag is connected to the one-way valve through a first air pipe, the one-way valve is connected to the pressure box, the fixed seat is connected to the pressure box through a second air pipe, and the gas pressure gauge is connected to the pressure box to detect the air pressure in the pressure box.

[0008] The fixed seat is detachably installed in the first installation groove. An air outlet adapted to the embedded sensor to be tested is provided at the upper end of the fixed seat, and the embedded sensor is installed at the upper end of the fixed seat. The pressing device presses against the upper end of the embedded sensor from top to bottom.

[0009] Optionally, the fixed seat is set to be cylindrical. One side of the first installation groove is provided with an opening, and the other side is set to be arc-shaped adapted to the cylindrical fixed seat.

[0010] Optionally, an interference fit is provided between the fixed seat and the first mounting groove.

[0011] Optionally, an air outlet is provided on the upper end surface of the fixed seat, and a sealing groove is provided on the upper end surface of the fixed seat around the outer periphery of the air outlet, and a sealing ring is provided in the sealing groove.

[0012] Optionally, the pressing device includes a pressing block, a pressing rod, a spring and a control shaft. The pressing block is fixed to the lower end of the pressing rod. The control shaft is arranged beside the pressing rod, and a rack is provided on one side of the pressing rod relative to the control shaft. A gear meshing with the rack is provided at a position corresponding to the rack on the control shaft. The spring is sleeved on the pressing rod, one end of the spring abuts against the pressing block, and the other end of the spring is lower than the machine frame.

[0013] Optionally, a horizontal shaft hole and a vertical second mounting groove are provided at the upper end of the opening of the machine frame. The control shaft is installed in the shaft hole, and the pressing rod is installed in the second mounting groove.

[0014] Optionally, a fixed panel is further included, and the fixed panel covers the upper end of the opening of the machine frame to seal the second mounting groove.

[0015] Optionally, a clamping plate, an adjusting bolt and an adjusting nut are further included. A clamping groove is provided on the inner side of the fixed panel, a through hole communicating with the clamping groove is provided on the fixed panel, the clamping plate is arranged in the clamping groove, the adjusting bolt passes through the through hole and abuts against the clamping plate, and the adjusting nut is threadedly connected to the adjusting bolt from the outside of the fixed panel.

[0016] Optionally, a retaining ring is further included. The retaining ring is axially provided with a fixing hole and radially provided with a screw hole. The retaining ring is sleeved on one end of the control shaft passing through the shaft hole through the fixing hole, and a locking bolt is provided in the screw hole and abuts against the control shaft.

[0017] Optionally, a rocker hole is provided at the other end of the control shaft, and a rocker is installed in the rocker hole.

[0018] For the embedded sensor airtightness testing device of the present utility model, the fixed seat is detachably installed in the first mounting groove. By disassembling the fixed seat, different specifications of fixed seats can be replaced to adapt to the detection of different styles of embedded sensors, thereby improving the versatility of the airtightness testing device.

[0019] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0020] Figure 1Stereogram of the embedded sensor airtightness testing device provided by the embodiment of the present utility model when the embedded sensor is not installed;

[0021] Figure 2 Stereogram of the embedded sensor airtightness testing device provided by the embodiment of the present utility model when the embedded sensor is installed;

[0022] Figure 3 Cross-sectional view of the embedded sensor airtightness testing device provided by the embodiment of the present utility model;

[0023] Figure 4 Right 45° top-down perspective view of the frame and pressing device of the embedded sensor airtightness testing device provided by the embodiment of the present utility model;

[0024] Figure 5 Left 45° top-down perspective view of the frame and pressing device of the embedded sensor airtightness testing device provided by the embodiment of the present utility model;

[0025] Figure 6 Exploded view of the frame and pressing device of the embedded sensor airtightness testing device provided by the embodiment of the present utility model;

[0026] Figure 7 Stereogram of the detection device of the embedded sensor airtightness testing device provided by the embodiment of the present utility model;

[0027] Figure 8 Exploded view of the fixed seat of the embedded sensor airtightness testing device provided by the embodiment of the present utility model.

[0028] The names and labels of each component in the figure are as follows:

[0029] 11. Fixed seat; 12. Inflatable airbag; 13. Pressure box; 14. Gas pressure gauge; 15. Check valve; 16. Second air pipe; 17. First air pipe; 21. Frame; 22. Fixed panel; 23. First installation groove; 24. Retaining ring; 25. Locking bolt; 26. Shaft hole; 27. Second installation groove; 31. Pressing block; 32. Pressing rod; 33. Operating shaft; 34. Spring; 35. Rocker; 40. Embedded sensor; 111. Air outlet; 112. Sealing groove; 113. Sealing ring; 211. Adjusting nut; 212. Adjusting bolt; 213. Clamping plate; 241. Threaded hole; 321. Rack; 331. Gear; 332. Rocker hole. Detailed implementation manners

[0030] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] Please refer to the attached Figure 1-8 As shown, an airtightness testing device for an embedded sensor provided by an embodiment of the present utility model includes a frame 21, a pressing device and a detection device. The frame 21 is set to be generally arched, with a first installation groove 23 provided at the lower end of its opening, and the pressing device is provided at the upper end of its opening; the detection device includes a fixed seat 11, a gas pressure gauge 14, a pressure box 13, a one-way valve 15 and an air inflation balloon 12. The air inflation balloon 12 is connected to the one-way valve 15 through a first air pipe 17, the one-way valve 15 is connected to the pressure box 13, the fixed seat 11 is connected to the pressure box 13 through a second air pipe 16, and the gas pressure gauge 14 is connected to the pressure box 13 to detect the air pressure in the pressure box 13; the fixed seat 11 is detachably installed in the first installation groove 23, and an air outlet 111 adapted to the embedded sensor 40 to be tested is provided at the upper end of the fixed seat 11. The embedded sensor 40 is installed at the upper end of the fixed seat 11, and the pressing device presses against the upper end of the embedded sensor 40 from top to bottom. The fixed seat 11 is detachably installed in the first installation groove 23. By disassembling the fixed seat 11, different specifications of fixed seats 11 can be replaced to adapt to the detection of different styles of embedded sensors 40, thereby improving the versatility of the airtightness testing device.

[0032] The fixed seat 11 is set to be cylindrical. One side of the first installation groove 23 is provided with an opening, and the other side is set to be arc-shaped to fit the cylindrical fixed seat 11. When installing the cylindrical fixed seat 11, only need to push the fixed seat 11 inward from the opening of the first installation groove 23, and the fixed seat 11 can be pushed into the first installation groove 23. After installation in place, the inner side of the fixed seat 11 closely adheres to the arc-shaped side wall of the first installation groove 23. An interference fit is provided between the fixed seat 11 and the first installation groove 23. Through the interference fit, the fixed seat 11 is tightly installed in the first installation groove 23 without the need for other fixing structures, thus facilitating the installation and disassembly of the fixed seat 11. The air outlet 111 is provided on the upper end surface of the fixed seat 11, and a sealing groove 112 is provided on the upper end surface of the fixed seat 11 around the air outlet 111. A sealing ring 113 is provided in the sealing groove 112. The sealing ring 113 is used for sealing between the embedded sensor 40 to be detected during testing to prevent air leakage at the connection from affecting the test result.

[0033] The pressing device includes a pressing block 31, a pressing rod 32, a spring 34 and a control shaft 33. The pressing block 31 is fixed to the lower end of the pressing rod 32. The control shaft 33 is arranged beside the pressing rod 32, and a rack 321 is provided on one side of the pressing rod 32 relative to the control shaft 33. A gear 331 meshing with the rack 321 is provided at the position of the control shaft 33 corresponding to the rack 321. The spring 34 is sleeved on the pressing rod 32. One end of the spring 34 abuts against the pressing block 31, and the other end of the spring 34 is lower than the frame 21. The spring 34 is in a compressed state, so that the pressing block 31 maintains a downward pressing movement tendency. During operation, rotating the control shaft 33 can drive the rack 321 meshing with it through the rack 321, thereby driving the up and down movement of the pressing rod 32. When moving upward, the pressing device is loosened, that is, when the test is over, the embedded sensor 40 is removed; when moving downward, the pressing device presses the embedded sensor 40, that is, when the embedded sensor 40 to be detected is placed in place, it is used to fix the embedded sensor 40 for detection.

[0034] A horizontal shaft hole 26 and a vertical second installation groove 27 are provided at the upper end of the opening of the frame 21. The control shaft 33 is installed in the shaft hole 26, and the pressing rod 32 is installed in the second installation groove 27.

[0035] It further includes a fixing panel 22. The fixing panel 22 covers the upper end of the opening of the frame 21 to seal the second installation groove 27. The fixing panel 22 is used to seal the second installation groove 27. During normal use, the pressing rod 32 is fixed in the second installation groove 27; when disassembly and maintenance are required, the fixing panel 22 is removed, and the pressing rod 32 can be taken out of the second installation groove 27, so as to facilitate later maintenance.

[0036] It further includes a clamping plate 213, an adjusting bolt 212 and an adjusting nut 211. A clamping groove is provided on the inner side of the fixing panel 22, and a through hole communicating with the clamping groove is provided on the fixing panel 22. The clamping plate 213 is arranged in the clamping groove. The adjusting bolt 212 passes through the through hole and abuts against the clamping plate 213. The adjusting nut 211 is threadedly connected to the adjusting bolt 212 from the outside of the fixing panel 22. Adjusting the adjusting bolt 212 can drive the movement of the clamping plate 213, so that the clamping plate 213 and the pressing rod 32 are in a pressed state or a loosened state. When in the pressed state, it is difficult for the pressing rod 32 to move up and down at this time. Therefore, usually after the sensor is installed in place, the clamping plate 213 can be selected to press the pressing rod 32 to prevent the pressing rod 32 from moving due to external force and affecting the test.

[0037] It further includes a retaining ring 24. The retaining ring 24 is axially provided with a fixing hole, and radially provided with a threaded hole 241. The retaining ring 24 is sleeved on one end of the control shaft 33 passing through the shaft hole 26 through the fixing hole, and a locking bolt 25 is arranged in the threaded hole 241 and abuts against the control shaft 33. The retaining ring 24 is used to fix the control shaft 33 so that the control shaft 33 is fixed after passing through the shaft hole 26 and cannot be freely pulled out from the shaft hole 26; loosen the locking bolt 25 and remove the retaining ring 24, then the control shaft 33 can be pulled out from the shaft hole 26.

[0038] The other end of the control shaft 33 is provided with a rocker hole 332, and a rocker 35 is installed in the rocker hole 332. The rocker 35 is used to operate the rotation of the control shaft 33 to make the rotation more labor-saving.

[0039] In summary, for the hermeticity testing device of the embedded sensor of the present utility model, the fixed seat 11 is detachably installed in the first installation groove 23. By disassembling the fixed seat 11, different specifications of the fixed seat 11 can be replaced to adapt to the detection of different styles of embedded sensors 40, thereby improving the versatility of the hermeticity testing device.

[0040] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0041] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

[0042] The above is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An embedded sensor air tightness test device, characterized in that: It includes a frame, a clamping device and a detection device. The frame is configured to be roughly arched, with a first mounting groove provided at the lower end of its opening, and the clamping device provided at the upper end of its opening; The detection device includes a fixing seat, a gas pressure gauge, a pressure box, a one-way valve and an inflatable air bag, the inflatable air bag is connected to the one-way valve via a first air pipe, the one-way valve is connected to the pressure box, the fixing seat is connected to the pressure box via a second air pipe, and the gas pressure gauge is connected to the pressure box for detecting the air pressure in the pressure box; The fixing seat is detachably installed in the first installation groove, and the upper end of the fixing seat is provided with an air outlet adapted to the embedded sensor to be tested. The embedded sensor is installed on the upper end of the fixing seat, and the clamping device presses against the upper end of the embedded sensor from top to bottom.

2. The air tightness testing device for an embedded sensor according to claim 1, characterized in that: The fixing seat is set to be cylindrical, one side of the first installation groove is provided with an opening, and the other side thereof is set to be an arc shape adapted to the cylindrical fixing seat.

3. The air tightness testing device for an embedded sensor according to claim 2, characterized in that: The fixing seat and the first mounting groove are configured to be interference fit.

4. The air tightness testing device for an embedded sensor according to claim 1, characterized in that: The air outlet is formed on the upper end surface of the fixing seat, and a circle of sealing grooves is formed on the upper end surface of the fixing seat at the periphery of the air outlet, and a sealing ring is formed in the sealing groove.

5. The air tightness testing device for an embedded sensor according to claim 1, characterized in that: The clamping device includes a pressure block, a pressure rod, a spring and an operating shaft, the pressure block is fixed to the lower end of the pressure rod, the operating shaft is arranged on the side of the pressure rod, and the pressure rod is provided with a rack on one side relative to the operating shaft, and the operating shaft is provided with a gear meshing with the rack at a position corresponding to the rack, the spring is sleeved on the pressure rod, one end of the spring is against the pressure block, and the other end of the spring is lower than the frame.

6. The air tightness testing device for an embedded sensor according to claim 5, characterized in that: The upper end of the frame opening is provided with a transverse shaft hole and a vertical second mounting groove, the operating shaft is mounted in the shaft hole, and the pressure rod is mounted in the second mounting groove.

7. The air tightness testing device for an embedded sensor according to claim 6, characterized in that: It also includes a fixed panel, which is covered at the upper end of the frame opening to cover the second installation slot.

8. The air tightness testing device for an embedded sensor according to claim 7, characterized in that: It also includes a clamping plate, an adjusting bolt and an adjusting nut. A clamping groove is provided on the inner side of the fixed panel, and a through hole connected to the clamping groove is provided on the fixed panel. The clamping plate is arranged in the clamping groove, and the adjusting bolt passes through the through hole and rests on the clamping plate. The adjusting nut is threadedly connected to the adjusting bolt from the outer side of the fixed panel.

9. The air tightness testing device for an embedded sensor according to claim 6, characterized in that: It also includes a retaining ring, which is axially provided with a fixing hole and radially provided with a screw hole. The retaining ring is sleeved on one end of the operating shaft passing through the shaft hole through the fixing hole, and a locking bolt is provided in the screw hole to press against the operating shaft.

10. The air tightness testing device for an embedded sensor according to claim 9, characterized in that: The other end of the operating shaft is provided with a rocker hole, and a rocker is installed in the rocker hole.