Air tightness detection device

Abstract

The utility model discloses an air tightness detection device, which relates to the field of detection and comprises a base, a guide post is mounted on the base, a cylinder fixing plate is mounted on the guide post, a cylinder is mounted on the cylinder fixing plate, a cylinder mounting bracket is mounted at the output end of the cylinder, a lower shell is mounted on the base, a lower sealing shaft is mounted on the lower shell, and a lower sealing ring is mounted on the lower sealing shaft. An upper shell is installed on the guide columns, and the air cylinder installation support is installed on the upper shell. According to the utility model, an air cylinder drives an upper shell, a linear sliding round flange bearing, an upper sealing shaft, a pressing shaft sleeve and the like of an upper shell assembly to be opened upwards, two sensor parts are assembled on a lower sealing shaft, the air cylinder is pressed downwards to a lower shell, ventilation is carried out from the bottom of the lower shell, specified air pressure is set, and whether an air leakage hole air pipe bubbles in a water tank is observed. The air tightness detection device has the advantages of being low in cost, good in adaptability and multi-station according to sensor component customization.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, and in particular to an airtightness detection device. Background Technology

[0002] A sensor is a detection device that can sense the information being measured and transform the sensed information into an electrical signal or other required form of information output according to a certain rule, so as to meet the requirements of information transmission, processing, storage, display, recording and control.

[0003] In the existing technology, there are two main methods for detecting the airtightness of automotive sensors: leak detectors and customized test fixtures. Leak detectors determine airtightness by testing the amount of leakage, but require customized test fixtures based on the sensor, which are expensive. Customized test fixtures test whether the sensor leaks under a specified pressure by detecting bubbles in water. Therefore, an airtightness detection device is needed to meet people's needs. Utility Model Content

[0004] The purpose of this invention is to provide an airtightness testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an airtightness testing device, comprising a base, a guide column mounted on the base, a cylinder fixing plate mounted on the guide column, a cylinder mounted on the cylinder fixing plate, a cylinder mounting bracket mounted on the output end of the cylinder, a lower shell mounted on the base, a lower sealing shaft mounted on the lower shell, an upper shell mounted on the guide column, a cylinder mounting bracket mounted on the upper shell, an upper sealing shaft mounted on the upper shell, a clamping sleeve mounted on the upper sealing shaft, a sensor component placed between the clamping sleeve and the lower sealing shaft, and a rubber pad installed at the connection between the lower shell and the upper shell.

[0006] Preferably, the lower sealing shaft has an air inlet hole, and the upper shell has an exhaust hole.

[0007] Preferably, a second sealing ring is installed on the upper sealing shaft, a third sealing ring is installed on the clamping shaft sleeve, and a first sealing ring is installed on the lower sealing shaft.

[0008] Preferably, a linear sliding round flange bearing is slidably mounted on the guide column, and the linear sliding round flange bearing is mounted on the upper shell.

[0009] Preferably, a fixing bolt is installed between the bottom of the guide post and the base, and a fixing nut is installed between the top of the guide post and the cylinder fixing plate.

[0010] Preferably, the sensor component is equipped with a mounting base, a fixing pin is installed between the sensor component and the mounting base, a sealing ring six is ​​installed on the sensor component, a sealing ring four is installed on the fixing pin, and a sealing ring five is installed on the sensor component.

[0011] The beneficial effects of this utility model are:

[0012] In this invention, the cylinder drives the upper shell assembly, linear sliding round flange bearing, upper sealing shaft, and pressing bushing to open upwards. Two sensor components are then assembled onto the lower sealing shaft. The cylinder then presses down onto the lower shell, and air is introduced from the bottom of the lower shell. The specified air pressure is set, and it is observed whether air bubbles emerge from the air leakage hole in the water tank. If no air bubbles are found, the airtightness is qualified. This invention has the advantages of low cost, good adaptability to sensor component customization, and multiple workstations. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of an airtightness testing device proposed in this utility model;

[0014] Figure 2 This is a cross-sectional structural schematic diagram of an airtightness testing device proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the sensor component of an airtightness detection device proposed in this utility model.

[0016] In the diagram: 100, base; 101, guide post; 102, cylinder fixing plate; 103, cylinder; 104, cylinder mounting bracket; 105, fixing nut; 106, fixing bolt; 107, linear sliding round flange bearing; 108, sealing ring one; 200, lower shell; 201, upper shell; 202, upper sealing shaft; 203, clamping bushing; 204, lower sealing shaft; 205, rubber pad; 206, air inlet; 207, exhaust port; 208, sealing ring two; 209, sealing ring three; 300, sensor component; 301, mounting base; 302, fixing pin; 303, sealing ring four; 304, sealing ring five; 305, sealing ring six. Detailed Implementation

[0017] 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.

[0018] Reference Figure 1-3An airtightness testing device includes a base 100, a guide post 101 mounted on the base 100, a cylinder fixing plate 102 mounted on the guide post 101, a cylinder 103 mounted on the cylinder fixing plate 102, a cylinder mounting bracket 104 mounted on the output end of the cylinder 103, a lower shell 200 mounted on the base 100, a lower sealing shaft 204 mounted on the lower shell 204, an upper shell 201 mounted on the guide post 101, the cylinder mounting bracket 104 mounted on the upper shell 201, an upper sealing shaft 202 mounted on the upper shell 201, a clamping bushing 203 mounted on the upper sealing shaft 202, a sensor component 300 placed between the clamping bushing 203 and the lower sealing shaft 204, and a rubber pad 205 installed at the connection between the lower shell 201 and the upper shell 201.

[0019] The cylinder drives the upper housing assembly, linear sliding flange bearing, upper sealing shaft, and clamping bushing to open upwards. Two sensor components are then assembled onto the lower sealing shaft. The cylinder then presses down onto the lower housing, and air is introduced from the bottom of the lower housing. A specified air pressure is set, and the vent pipe is observed to see if air bubbles emerge in the water tank. If no air bubbles are found, the airtightness is satisfactory. This system offers advantages such as low cost, good adaptability to customized sensor components, and multi-station operation.

[0020] In an optional embodiment: the lower sealing shaft 204 is provided with an air inlet 206, and the upper shell 201 is provided with an exhaust port 207.

[0021] It should be noted that by injecting air through the air inlet 206, you can observe whether bubbles are generated in the exhaust port 207. An air tube needs to be connected to the exhaust port 207 and extended into the water.

[0022] In an optional embodiment: a second sealing ring 208 is installed on the upper sealing shaft 202, a third sealing ring 209 is installed on the clamping bushing 203, and a first sealing ring 108 is installed on the lower sealing shaft 204.

[0023] It should be noted that the upper housing 201 is sealed with sealing ring 208 and sealing ring 3 209 as auxiliary seals, while the lower sealing shaft 204 is sealed with sealing ring 108.

[0024] In an optional embodiment: a linear sliding round flange bearing 107 is slidably mounted on the guide post 101, and the linear sliding round flange bearing 107 is mounted on the upper shell 201.

[0025] It should be noted that the movable upper shell 201 slides on the guide post 101 by being restricted by the linear sliding round flange bearing 107.

[0026] In an optional embodiment, a fixing bolt 106 is installed between the bottom of the guiding column 101 and the base 100, and a fixing nut 105 is installed between the top end of the guiding column 101 and the cylinder fixing plate 102.

[0027] In an optional embodiment, a mounting base 301 is installed on the sensor component 300, a fixing pin 302 is installed between the sensor component 300 and the mounting base 301, a sealing ring six 305 is installed on the sensor component 300, a sealing ring four 303 is installed on the fixing pin 302, and a sealing ring five 304 is installed on the sensor component 300.

[0028] It should be noted that the sealing rings four 303, sealing rings five 304, and sealing rings six 305 are used for auxiliary sealing on the sensor component 300.

[0029] The working principle of the present utility model:

[0030] This device belongs to a customized test tooling, testing 2 sensor components at a time, and is used to detect the sealing performance of the sealing rings 4, 5, and 6 of the sensor department. For example Figure 1 . According to the characteristics of the sensor component, the mechanical structure of the sealing test tooling is designed. The cylinder drives the upper shell assembly (upper shell, linear sliding circular flange bearing, upper sealing shaft, pressing shaft sleeve, etc.) to open upwards. The 2 sensor components are assembled onto the lower sealing shaft, and then the cylinder presses down onto the lower shell. Then air is introduced from the bottom of the lower shell, a specified air pressure is set, and it is observed whether bubbles emerge from the leak hole air pipe in the water tank. If there are no bubbles, the airtight performance is qualified;

[0031] The cylinder 103 is used to drive the movement position of the upper shell 201. The movable upper shell 201 slides on the guiding column 101 under the restriction of the linear sliding circular flange bearing 107. During the process when the upper shell 201 approaches the lower shell 200, the upper sealing shaft 202 and the pressing shaft sleeve 203 on the upper shell 201 will buckle onto the sensor component 300. At the same time, a rubber gasket 205 is used for sealing at the connection between the lower shell 200 and the upper shell 201 to prevent leakage. Sealing rings two 208 and sealing rings three 209 are used for auxiliary sealing on the upper shell 201 part, and a sealing ring one 108 is used for sealing on the lower sealing shaft 204. Air is injected through the air inlet hole 206, and then it can be observed whether bubbles are generated at the exhaust hole 207. It is necessary to connect a trachea to the exhaust hole 207 and extend it into the water, and the sealing rings four 303, sealing rings five 304, and sealing rings six 305 are used for auxiliary sealing on the sensor component 300.

[0032] 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. An airtightness testing device, comprising a base (100), characterized in that: A guide post (101) is mounted on the base (100), a cylinder fixing plate (102) is mounted on the guide post (101), a cylinder (103) is mounted on the cylinder fixing plate (102), a cylinder mounting bracket (104) is mounted on the output end of the cylinder (103), a lower shell (200) is mounted on the base (100), a lower sealing shaft (204) is mounted on the lower shell (200), and the guide post (101) is mounted on... An upper housing (201) is installed, a cylinder mounting bracket (104) is installed on the upper housing (201), an upper sealing shaft (202) is installed on the upper housing (201), a clamping bushing (203) is installed on the upper sealing shaft (202), a sensor component (300) is placed between the clamping bushing (203) and the lower sealing shaft (204), and a rubber pad (205) is installed at the connection between the lower housing (200) and the upper housing (201).

2. The airtightness testing device according to claim 1, characterized in that: The lower sealing shaft (204) is provided with an air inlet (206), and the upper shell (201) is provided with an exhaust port (207).

3. The airtightness testing device according to claim 1, characterized in that: A second sealing ring (208) is installed on the upper sealing shaft (202), a third sealing ring (209) is installed on the clamping bushing (203), and a first sealing ring (108) is installed on the lower sealing shaft (204).

4. The airtightness testing device according to claim 1, characterized in that: A linear sliding round flange bearing (107) is slidably mounted on the guide post (101), and the linear sliding round flange bearing (107) is mounted on the upper shell (201).

5. The airtightness testing device according to claim 1, characterized in that: A fixing bolt (106) is installed between the bottom of the guide post (101) and the base (100), and a fixing nut (105) is installed between the top of the guide post (101) and the cylinder fixing plate (102).

6. The airtightness testing device according to claim 1, characterized in that: A mounting base (301) is installed on the sensor component (300), a fixing pin (302) is installed between the sensor component (300) and the mounting base (301), a sealing ring six (305) is installed on the sensor component (300), a sealing ring four (303) is installed on the fixing pin (302), and a sealing ring five (304) is installed on the sensor component (300).

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