A test fixture for testing the sealing performance of automobile sunroof

Abstract

The utility model discloses a test fixture for detecting the sealing performance of a car sunroof, comprising a base, a positioning frame fixedly connected to the top of the base, a simulated sunroof arranged on the top of the positioning frame, a plurality of positioning strips fixedly connected to the bottom of the simulated sunroof, and limited position components arranged on both sides of the top of the base; a fixing frame fixedly connected to the rear end of the base, a second hydraulic cylinder fixedly connected to the top of the fixing frame, a detection cover fixedly connected to the bottom of the piston rod of the second hydraulic cylinder, a detection component arranged on the fixing frame, and an air pressure sensor installed at the center of the positioning frame. The utility model can simulate high and low temperature environments when performing airtightness detection by means of the detection component arranged thereon, and the high and low temperature environment simulation can more comprehensively evaluate the performance of the sunroof sealing strip at different temperatures, thereby improving the accuracy of detection and ensuring the factory quality of the sunroof.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile sunroof detection equipment, in particular to a detection tool used for detecting the sealing performance of automobile sunroofs. Background Art

[0002] A car sunroof is an openable or fixed window installed on the roof of a car, usually made of transparent or translucent materials such as glass or plastic. They can increase the lighting and ventilation in the car, and improve the comfort and ventilation in the car. A good sunroof seal can effectively prevent rain or car wash water from entering the car. If the sunroof seals poorly, water may leak into the car, causing damage to the seats, carpets and interior, and even causing electrical problems or rust. A good sunroof seal can help maintain a stable temperature in the car and prevent cold or hot air from entering the car. This helps improve the air conditioning and heating efficiency of the vehicle and improves the comfort of passengers. The sunroof needs to be tested for its sealing when it leaves the factory.

[0003] At present, the testing fixtures for automobile sunroof sealing generally directly perform airtightness tests on the simulated sealing sunroof and pressurize it. When the air pressure value changes, it indicates poor sealing. However, this testing method does not take into account the high and low temperature driving environment. Since the performance of the sealing strip will change under high and low temperature environments, the accuracy of the detected airtightness results is poor, which affects the factory quality of the sunroof. Utility Model Content

[0004] The utility model aims to provide a test fixture for testing the sealing performance of a car sunroof, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A test fixture for testing the sealing performance of a car sunroof, comprising: a base, a positioning frame is fixedly connected to the top of the base, a simulated sunroof is arranged on the top of the positioning frame, a plurality of positioning strips are fixedly connected to the bottom of the simulated sunroof, and both sides of the top of the base are provided with limit assemblies;

[0007] The rear end of the base is fixedly connected to a fixing frame, the top of the fixing frame is fixedly connected to a second hydraulic cylinder, the bottom of the piston rod of the second hydraulic cylinder is fixedly connected to a detection cover, a detection component is arranged on the fixing frame, and an air pressure sensor is installed at the center of the positioning frame.

[0008] In a preferred embodiment of the present invention, a plurality of positioning holes corresponding to the positioning strips are formed on the top of the positioning frame, and the plurality of positioning strips all pass through the centers of the positioning holes.

[0009] In a preferred embodiment of the present utility model, the limiting assembly includes a support frame fixedly connected to the top of the base, the top of the support frame is fixedly connected to a first hydraulic cylinder, and the bottom of the piston rod of the first hydraulic cylinder is fixedly connected to a fixed pad.

[0010] In a preferred embodiment of the present invention, the fixing pad is tightly fitted to the top of the simulated skylight.

[0011] In a preferred embodiment of the present utility model, the detection cover is composed of a detection frame and a soft sealing frame, and the soft sealing frame is sealed with the top of the simulated skylight.

[0012] In a preferred embodiment of the present utility model, the detection component includes a shell fixedly connected to the top of the fixed frame, the top of the shell is fixedly connected to an air intake pipe, the bottom of the air intake pipe is fixedly connected to a first connecting pipe, the center of the first connecting pipe is fixedly connected to two solenoid valves, the bottom of one side of the outer wall of the first connecting pipe is fixedly connected to a heating pipe, the bottom of the heating pipe is fixedly connected to a second connecting pipe, the outer wall of the second connecting pipe is fixedly connected to a detection tube, the detection tube is connected, the center of the heating tube is fixedly connected to a heating network, the inner wall of the shell is fixedly connected to a power supply, the other side of the bottom of the outer wall of the first connecting pipe is fixedly connected to a cooling pipe, the bottom of the cooling pipe is fixedly connected to a refrigerator, and the refrigerator is connected to the second connecting pipe.

[0013] In a preferred embodiment of the present invention, a wire is installed between the heating network and the power supply, and an electrical connection is made through the wire.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0015] The difference from the prior art lies in that: through the setting of the limit component, the simulated skylight can be limited and fixed, so that it has a good seal with the positioning frame, thereby avoiding the influence of leakage on the detection result of the air pressure sensor; through the setting of the detection component, high and low temperature environments can be simulated when performing air tightness detection. The high and low temperature environment simulation can more comprehensively evaluate the performance of the skylight sealing strip at different temperatures. Under high temperature conditions, the softness and heat resistance of the sealing strip can be tested, and under low temperature conditions, the elasticity and cold resistance of the sealing strip can be tested, and the sealing effect of the sealing strip in various temperature ranges can be determined to ensure that it can maintain good sealing performance under different climatic conditions, thereby improving the accuracy of the detection and ensuring the factory quality of the skylight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is the overall appearance of a test fixture used for testing the sealing of a car sunroof;

[0018] Figure 2 The figure is a top view of a test fixture for testing the sealing performance of a car sunroof;

[0019] Figure 3 for Figure 2 Sectional view along AA direction;

[0020] Figure 4 for Figure 2 Cross-sectional view along the BB direction;

[0021] Figure 5 for Figure 3 A partial enlarged view of point C in the middle.

[0022] In the figure: 1. base; 2. positioning frame; 3. simulated skylight; 4. positioning strip; 5. limit assembly; 501. support frame; 502. first hydraulic cylinder; 503. fixing pad; 6. fixing frame; 7. second hydraulic cylinder; 8. detection cover; 81. detection frame; 82. soft sealing frame; 9. detection assembly; 901. housing; 902. air intake pipe; 903. first connecting pipe; 904. solenoid valve; 905. heating pipe; 906. second connecting pipe; 907. detection pipe; 908. heating network; 909. power supply; 910. wire; 911. cooling pipe; 912. refrigerator; 10. air pressure sensor. DETAILED DESCRIPTION

[0023] 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 elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] Please refer to Figure 1-5A test fixture for detecting the sealing of a car sunroof comprises a base 1, a positioning frame 2 is fixedly connected to the top of the base 1, a simulated sunroof 3 is arranged on the top of the positioning frame 2, a plurality of positioning strips 4 are fixedly connected to the bottom of the simulated sunroof 3, a plurality of positioning holes corresponding to the positioning strips 4 are opened on the top of the positioning frame 2, and the plurality of positioning strips 4 all pass through the center of the positioning holes; the positioning strips 4 enable rapid positioning and installation, and can also limit the horizontal direction, and have good portability, and both sides of the top of the base 1 are provided with limiting components 5; the limiting components 5 include a support frame 501 fixedly connected to the top of the base 1, and a support frame 502 is provided on the top of the base 1. The top of the support frame 501 is fixedly connected to the first hydraulic cylinder 502, and the bottom of the piston rod of the first hydraulic cylinder 502 is fixedly connected to the fixing pad 503; the fixing pad 503 fits tightly with the top of the simulated sunroof 3; so that the fixing pad 503 can have a good limiting effect with the simulated sunroof 3, so that the simulated sunroof 3 can be stably installed on the top of the positioning frame 2 to avoid the influence of leakage on the detection result of the air pressure sensor 10, and the two first hydraulic cylinders 502 are started, and the piston rods of the two first hydraulic cylinders 502 drive the two fixing pads 503 to descend, so that the two fixing pads 503 are in contact with the simulated sunroof 3 to achieve downward limit fixation.

[0025] like Figure 3 and Figure 5As shown, the rear end of the base 1 is fixedly connected to a fixing frame 6, the top of the fixing frame 6 is fixedly connected to a second hydraulic cylinder 7, the bottom of the piston rod of the second hydraulic cylinder 7 is fixedly connected to a detection cover 8, the detection cover 8 is composed of a detection frame 81 and a soft sealing frame 82, and the soft sealing frame 82 is sealed with the top of the simulated skylight 3; so that the soft sealing frame 82 can have a good sealing effect with the detection cover 8, ensuring that a good high and low temperature environment can be achieved during the detection process, a detection component 9 is arranged on the fixing frame 6, and an air pressure sensor 10 is installed at the center of the positioning frame 2. The detection component 9 includes a fixed connection The housing 901 is connected to the top of the fixing frame 6, the top of the housing 901 is fixedly connected to the air inlet pipe 902, the bottom of the air inlet pipe 902 is fixedly connected to the first connecting pipe 903, the center of the first connecting pipe 903 is fixedly connected to two solenoid valves 904, the bottom of the outer wall of the first connecting pipe 903 is fixedly connected to a heating pipe 905, the bottom of the heating pipe 905 is fixedly connected to a second connecting pipe 906, the outer wall of the second connecting pipe 906 is fixedly connected to a detection pipe 907, the detection pipe 907 is connected to the phase, the center of the heating pipe 905 is fixedly connected to a heating network 908, the housing The inner wall of 901 is fixedly connected with a power source 909, and a wire 910 is installed between the heating network 908 and the power source 909, and they are electrically connected through the wire 910; so that the power source 909 can heat the heating network 908 through the wire 910, thereby raising its temperature and converting the passing air into hot air, creating a high-temperature environment. A cooling pipe 911 is fixedly connected to the other side of the bottom of the outer wall of the first connecting pipe 903, and a refrigerator 912 is fixedly connected to the bottom of the cooling pipe 911, and the refrigerator 912 is connected to the second connecting pipe 906; the air intake pipe 902 is heated Air pressure, when simulating a high temperature environment, start the power supply 909, the power supply 909 heats the heating network 908 through the wire 910, and at the same time opens the solenoid valve 904 on the side of the heating tube 905, the air is heated by the heating network 908, and the hot air enters the center of the detection cover 8, which can detect the air tightness of the simulated skylight 3 in a high temperature environment. In a low temperature environment, close the solenoid valve 904 on the side of the heating tube 905, open the solenoid valve 904 on the side of the cooling tube 911, start the refrigerator 912, the air is cooled by the refrigerator 912, and the air tightness of the simulated skylight 3 in a low temperature environment is detected.

[0026] The working principle of the utility model is as follows: first, the simulated skylight 3 is placed on the top of the positioning frame 2, and the positioning bar 4 is installed in the center of the positioning frame 2. Then, the two first hydraulic cylinders 502 are started, and the piston rods of the two first hydraulic cylinders 502 drive the two fixed pads 503 to descend, so that the two fixed pads 503 are in contact with the simulated skylight 3 to achieve downward limit fixation. Then, the second hydraulic cylinder 7 is started, and the piston rod of the second hydraulic cylinder 7 drives the detection cover 8 to descend so that it fits tightly with the simulated skylight 3. Then, air pressure is added through the intake pipe 902 to simulate a high temperature environment. When the power supply 909 is started, the power supply 909 heats the heating network 908 through the wire 910, and at the same time, the solenoid valve 904 on the side of the heating tube 905 is opened, and the air is heated by the heating network 908, and the hot air enters the center of the detection cover 8, so as to detect the air tightness of the simulated skylight 3 in a high temperature environment. When the environment is low temperature, the solenoid valve 904 on the side of the heating tube 905 is closed, and the solenoid valve 904 on the side of the cooling tube 911 is opened, and the refrigerator 912 is started, and the air is cooled by the refrigerator 912, so as to detect the air tightness of the simulated skylight 3 in a low temperature environment.

[0027] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A test fixture for testing the sealing performance of a car sunroof, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a positioning frame (2), the top of the positioning frame (2) is provided with a simulated skylight (3), the bottom of the simulated skylight (3) is fixedly connected to a plurality of positioning strips (4), and both sides of the top of the base (1) are provided with limit assemblies (5); The rear end of the base (1) is fixedly connected to a fixing frame (6), the top of the fixing frame (6) is fixedly connected to a second hydraulic cylinder (7), the bottom of the piston rod of the second hydraulic cylinder (7) is fixedly connected to a detection cover (8), a detection component (9) is arranged on the fixing frame (6), and an air pressure sensor (10) is installed at the center of the positioning frame (2).

2. The inspection tool for automobile sunroof sealing inspection according to claim 1 is characterized in that: A plurality of positioning holes corresponding to the positioning strips (4) are provided on the top of the positioning frame (2), and the plurality of positioning strips (4) all pass through the center of the positioning holes.

3. The inspection tool for automobile sunroof sealing inspection according to claim 1 is characterized in that: The limiting assembly (5) comprises a support frame (501) fixedly connected to the top of the base (1); the top of the support frame (501) is fixedly connected to a first hydraulic cylinder (502); and the bottom of the piston rod of the first hydraulic cylinder (502) is fixedly connected to a fixing pad (503).

4. The inspection tool for automobile sunroof sealing inspection according to claim 3 is characterized in that: The fixing pad (503) is tightly fitted to the top of the simulated skylight (3).

5. The inspection tool for automobile sunroof sealing inspection according to claim 1, characterized in that: The detection cover (8) is composed of a detection frame (81) and a soft sealing frame (82), and the soft sealing frame (82) is sealed with the top of the simulated skylight (3).

6. The inspection tool for automobile sunroof sealing inspection according to claim 1, characterized in that: The detection component (9) comprises a shell (901) fixedly connected to the top of the fixing frame (6); the top of the shell (901) is fixedly connected to an air intake pipe (902); the bottom of the air intake pipe (902) is fixedly connected to a first connecting pipe (903); the center of the first connecting pipe (903) is fixedly connected to two solenoid valves (904); the bottom of one side of the outer wall of the first connecting pipe (903) is fixedly connected to a heating pipe (905); the bottom of the heating pipe (905) is fixedly connected to a second connecting pipe (906); The outer wall of the second connecting tube (906) is fixedly connected to a detection tube (907), and the detection tube (907) is connected to the heating tube (905). The center of the heating tube (905) is fixedly connected to a heating network (908). The inner wall of the outer shell (901) is fixedly connected to a power supply (909). The other side of the bottom of the outer wall of the first connecting tube (903) is fixedly connected to a cooling tube (911), and the bottom of the cooling tube (911) is fixedly connected to a refrigerator (912), and the refrigerator (912) is connected to the second connecting tube (906).

7. A test fixture for testing the sealing performance of a car sunroof according to claim 6, characterized in that: A wire (910) is installed between the heating network (908) and the power source (909), and an electrical connection is established through the wire (910).

Images