A pressure temperature sensor air tightness testing device

Abstract

The utility model relates to airtightness testing arrangement technical field especially a kind of pressure temperature sensor airtightness testing arrangement, including processing station, electric sliding table is provided on the processing station, placing structure is provided on the electric sliding table, linear motor is provided on support frame, the shaft end of the linear motor is connected with cover structure, moving seat is provided on the processing station, the pressurizing mouth that moving seat is provided with and the placing structure and the cover structure are matched, recess is provided on the placing structure and is matched with pressure temperature sensor, sealing structure is formed by placing structure, cover structure and moving seat cooperation, and the pressurizing mouth of moving seat and the pressure temperature sensor to be detected abuts, pressurization is carried out through pressurizing mouth, and the pressure sensor on cover structure is matched, the pressure inside the sealed space when pressurization is detected, to detect the airtightness of pressure temperature sensor.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing devices, and in particular to an airtightness testing device for a pressure and temperature sensor. Background Technology

[0002] A pressure-temperature sensor is an integrated sensor device that combines pressure and temperature measurement functions. It can simultaneously detect the pressure and temperature values ​​in the environment or system and output real-time data through signal conversion. By integrating pressure-sensitive elements (such as piezoresistive or capacitive structures) with temperature-sensitive elements (such as thermocouples or resistance temperature detectors), it achieves synchronous monitoring of dual parameters.

[0003] Existing pressure and temperature sensors require airtightness testing during production to prevent excessive detection errors due to poor airtightness. For example, Chinese Patent Publication No. CN221764813U discloses an "Automotive Pressure Sensor Airtightness Testing Device," which uses a pneumatic pressing device to place a mold, and then places the automotive pressure sensor in the mold. An airtightness tester is connected to the mold. The mold fixes the automotive pressure sensor, the pneumatic pressing device presses down to seal the automotive pressure sensor, and the airtightness tester tests the airtightness of the automotive pressure sensor to determine whether the airtightness of the automotive pressure sensor is qualified, ensuring zero leakage in the product.

[0004] However, in actual use, when the mold and pneumatic pressing device press down to test the seal of the automotive pressure sensor, the test results are prone to errors due to insufficient sealing. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the inaccuracy of test results due to insufficient sealing, and to propose a pressure and temperature sensor airtightness testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design a pressure and temperature sensor airtightness testing device, including a processing table, an electric slide table, a placement structure on the electric slide table, a support frame on the processing table, a linear motor on the support frame, a cover structure connected to the shaft end of the linear motor, a movable seat on the processing table, a pressure port on the movable seat that cooperates with the placement structure and the cover structure, a groove on the placement structure that cooperates with the pressure and temperature sensor, and the pressure port corresponding to the groove.

[0007] Furthermore, the placement structure includes a placement block disposed on the electric slide block, a groove formed on the placement block, an elastic element disposed on the groove, and a pushing part that cooperates with the pressure and temperature sensor being fixedly connected to one end of the elastic element.

[0008] Furthermore, the cover structure includes a mounting plate fixedly connected to the shaft end of the linear motor, a housing fixedly mounted on the mounting plate, a pressure block fixedly mounted inside the housing, a ball bearing on the pressure block that contacts the pressure and temperature sensor, a sealing ring fixedly mounted at the lower end of the housing that mates with the placement block, and a pressure sensor mounted on the inner wall of the housing.

[0009] Furthermore, a guide rail is fixedly installed on the processing table, the movable seat is slidably connected to the guide rail, and the movable seat is connected to the placement structure through a linkage component.

[0010] Furthermore, the linkage assembly includes two opposing racks, a gear rotatably mounted on the machining table that meshes with the two racks, and a movable seat fixedly connected to one of the racks.

[0011] Furthermore, the placement structure is equipped with an L-shaped component that mates with another rack, and the processing table is provided with a limiting frame to restrict the movement trajectory of the rack.

[0012] The airtightness testing device for a pressure and temperature sensor proposed in this utility model has the following advantages: In this invention, an electric slide table drives the placement structure to move. When the placement structure moves to a certain position, the linkage structure drives the moving seat to move. A linear motor drives the cover structure to move down and abut against the placement structure. The placement structure, cover structure, and moving seat cooperate to form a sealing structure. The pressure port of the moving seat abuts against the pressure and temperature sensor to be tested. Pressure is applied through the pressure port, and the pressure sensor on the cover structure is used to detect the pressure inside the sealed space during pressurization, thereby detecting the sealing performance of the pressure and temperature sensor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a pressure-temperature sensor airtightness testing device proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the movable base of this utility model; Figure 3 This is a schematic diagram of the rack structure of this utility model; Figure 4 This is a schematic diagram of the structure of the shell of this utility model; Figure 5 This is a schematic diagram of the structure of the pressure block of this utility model.

[0014] In the diagram: 1. Processing table; 11. Guide rail; 2. Electric slide table; 3. Placement structure; 31. Placement block; 32. Elastic element; 33. Pushing part; 4. Support frame; 5. Linear motor; 6. Cover structure; 61. Mounting plate; 62. Housing; 63. Pressure block; 7. Moving seat; 8. Pressing port; 9. Linkage assembly; 91. Rack; 92. Gear; 93. L-shaped part; 94. Limit frame. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figures 1-5 A pressure and temperature sensor airtightness testing device includes a processing table 1, an electric slide 2 on the processing table 1, a placement structure 3 on the electric slide 2, a support frame 4 on the processing table 1, a linear motor 5 on the support frame 4, a cover structure 6 connected to the shaft end of the linear motor 5, a movable seat 7 on the processing table 1, a sealing gasket on the movable seat 7 that cooperates with the placement structure 3 and the cover structure 6, a pressure port 8 on the movable seat 7 that cooperates with the placement structure 3 and the cover structure 6, and a groove on the placement structure 3 that cooperates with the pressure and temperature sensor, with the pressure port 8 corresponding to the groove.

[0017] In this invention, the electric slide 2 drives the placement structure 3 to move, and the linear motor 5 drives the cover structure 6 to move down and abut against the placement structure 3. The placement structure 3, the cover structure 6, and the moving seat 7 cooperate to form a sealed space. The pressure port 8 of the moving seat 7 abuts against the pressure and temperature sensor to be tested. Pressure is applied to the pressure port 8 while the internal pressure of the sealed space is detected. If the pressure changes, it proves that the pressure and temperature sensor is not sealed properly.

[0018] Furthermore, in this embodiment, the placement structure 3 includes a placement block 31 disposed on the slider of the electric slide table 2. A groove is formed on the placement block 31, and an elastic element 32 is disposed on the groove. One end of the elastic element 32 is fixedly connected to a pushing part 33 that cooperates with the pressure and temperature sensor. The elastic element 32 is preferably a spring. When the moving seat 7 abuts against the pressure and temperature sensor, the elastic element 32 cooperates with the pushing part 33 to form a buffer space, so that the pressure and temperature sensor can move backward, avoiding direct rigid collision between the pressure and temperature sensor and the moving seat 7, which would damage the pressure and temperature sensor.

[0019] Furthermore, in this embodiment, the cover structure 6 includes a mounting plate 61 fixedly connected to the shaft end of the linear motor 5. A housing 62 is fixedly mounted on the mounting plate 61, and a pressure block 63 is fixedly mounted inside the housing 62. A ball bearing that contacts the pressure and temperature sensor is mounted on the pressure block 63. A sealing ring that cooperates with the placement block 31 is fixedly mounted at the lower end of the housing 62. A pressure sensor is mounted on the inner wall of the housing 62. After the housing 62 moves down, it forms a sealed space with the placement block 31 and the moving seat 7. When the pressure port 8 is pressurized, the pressure sensor detects the internal pressure of the sealed space. If the pressure changes, it proves that the sealing performance of the pressure and temperature sensor is insufficient, causing some high-pressure gas to enter the sealed space.

[0020] It should be noted that, in this embodiment, a guide rail 11 is fixedly installed on the processing table 1, and the movable seat 7 is slidably connected to the guide rail 11. The movable seat 7 is connected to the placement structure 3 through the linkage component 9. The cross-section of the guide rail 11 is preferably T-shaped or dovetail-shaped, which guides the movable seat 7 while limiting it to prevent it from detaching.

[0021] Furthermore, in this embodiment, the linkage component 9 includes two opposing racks 91. A gear 92 is rotatably mounted on the processing table 1 and meshes with the two racks 91. The movable seat 7 is fixedly connected to one of the racks 91. When the electric slide 2 drives the placement structure 3 to move to a specific position, the rack 91 is pushed by the placement structure 3, which drives the gear 92 to rotate. The rotation of the gear 92 drives the rack 91 fixedly connected to the movable seat 7 to move in the opposite direction, thereby driving the movable seat 7 to move toward the placement structure 3, so that the movable seat 7 abuts against the placement structure 3 and the cover structure 6 to form a sealing structure.

[0022] More specifically, in this embodiment, an L-shaped component 93 that cooperates with another rack 91 is installed on the placement structure 3. One side of the L-shaped component 93 cooperates with a rack 91. The rack is provided with a buffer structure, including a plug rod. An elastic element is connected to the plug rod. The other end of the elastic element is connected to a collision part that cooperates with the L-shaped component 93. The collision part is movably inserted with the plug rod to form a damping buffer structure. A limiting frame 94 is provided on the processing table 1 to limit the movement trajectory of the rack 91 and prevent the rack 91 from deviating from the preset movement trajectory. A tension spring is provided on the processing table 1 and is connected to the rack 91 for resetting the rack 91 and the moving seat 7.

[0023] Working method: During operation, the electric slide 2 drives the placement structure 3 to move, and the linear motor 5 drives the cover structure 6 to move down and abut against the placement structure 3. When the electric slide 2 drives the placement structure 3 to a specific position, the rack 91 is pushed by the L-shaped part 93 on the placement structure 3, which drives the gear 92 to rotate. The rotation of the gear 92 drives the rack 91, which is fixedly connected to the moving seat 7, to move in the opposite direction, thereby driving the moving seat 7 to move towards the placement structure 3, so that the moving seat 7 abuts against the placement structure 3 and the cover structure 6 to form a sealed structure. The pressure port 8 is pressurized while the internal pressure of the sealed space is detected. If the pressure changes, it proves that the sealing of the pressure and temperature sensor is insufficient.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure and temperature sensor airtightness testing device, comprising a processing table (1), characterized in that: An electric slide (2) is provided on the processing table (1), a placement structure (3) is provided on the electric slide (2), a support frame (4) is provided on the processing table (1), a linear motor (5) is provided on the support frame (4), a cover structure (6) is connected to the shaft end of the linear motor (5), a movable seat (7) is provided on the processing table (1), a pressure port (8) is provided on the movable seat (7) to cooperate with the placement structure (3) and the cover structure (6), a groove is provided on the placement structure (3) to cooperate with the pressure and temperature sensor, and the pressure port (8) corresponds to the groove.

2. The pressure and temperature sensor airtightness testing device according to claim 1, characterized in that: The placement structure (3) includes a placement block (31) disposed on the slider of the electric slide (2), a groove is formed on the placement block (31), an elastic element (32) is disposed on the groove, and a pushing part (33) cooperating with the pressure and temperature sensor is fixedly connected to one end of the elastic element (32).

3. The pressure and temperature sensor airtightness testing device according to claim 2, characterized in that: The cover structure (6) includes a mounting plate (61) fixedly connected to the shaft end of the linear motor (5). A housing (62) is fixedly mounted on the mounting plate (61). A pressure block (63) is fixedly mounted inside the housing (62). A ball bearing that contacts the pressure and temperature sensor is mounted on the pressure block (63). A sealing ring that cooperates with the placement block (31) is fixedly mounted at the lower end of the housing (62). A pressure sensor is mounted on the inner wall of the housing (62).

4. The pressure and temperature sensor airtightness testing device according to claim 1, characterized in that: The processing table (1) is fixedly provided with a guide rail (11), the movable seat (7) is slidably connected to the guide rail (11), and the movable seat (7) is connected to the placement structure (3) through the linkage component (9).

5. The pressure and temperature sensor airtightness testing device according to claim 4, characterized in that: The linkage component (9) includes two racks (91) arranged opposite to each other. A gear (92) that meshes with the two racks (91) is rotatably arranged on the processing table (1). The moving seat (7) is fixedly connected to one of the racks (91).

6. The pressure and temperature sensor airtightness testing device according to claim 5, characterized in that: The placement structure (3) is equipped with an L-shaped part (93) that cooperates with another rack (91), and the processing table (1) is provided with a limiting frame (94) that restricts the movement trajectory of the rack (91).

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