Automobile front windshield testing fixture
By introducing a suction pump and servo motor driven cleaning system into the automotive windshield inspection fixture, dust on the placement stage is automatically scraped off, solving the problem of dust affecting measurement accuracy in existing technologies and achieving higher measurement accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUZHOU QICHAI SUNLIGHT SAFE GLASS LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-21
AI Technical Summary
The existing automotive windshield inspection fixture's placement platform and fixing blocks easily attract dust, resulting in poor cleaning effectiveness and affecting the flatness of the glass placement and measurement accuracy.
A fixture structure with a vacuum pump, servo motor, threaded rod and cleaning scraper was designed. The sliding frame and cleaning scraper are driven by the threaded rod through the negative pressure hole and air extraction hole to automatically scrape off the dust on the placement table and ensure that the glass is placed flat.
It effectively reduces the interference of dust on glass measurements, improves the accuracy and flatness of measurement data, and enhances the accuracy of testing.
Smart Images

Figure CN224151586U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive windshield inspection technology, specifically an automotive windshield inspection tool. Background Technology
[0002] In modern automobile manufacturing, vehicle assembly is carried out using assembly line operations, with some workstations employing robotic arms. The precision of assembled parts directly affects the overall assembly efficiency. Car windshields are generally made into a single, large curved surface with curvature in all directions. This type of curved glass is a product with very high technical requirements, both in terms of processing and assembly, as it involves many issues such as vehicle model, strength, heat insulation, and assembly. Therefore, it is necessary to inspect the car windshield using inspection tools.
[0003] In the prior art, a windshield inspection fixture for automobiles, with publication number CN221975977U, relates to the field of automotive windshield inspection technology. This windshield inspection fixture includes: a base plate, a mold, and reference blocks. The base plate is rectangular and has a through groove in its center. The mold is fixedly connected to the upper surface of the base plate, and the shape of the upper surface of the mold matches the shape of the automotive windshield. The reference blocks are arranged on the upper surface of the mold. A clamping device is provided on the upper surface of the base plate. A detachable side positioning block and a screw-on clamping device are provided on the outer side of the mold. The base plate is made of steel, and the mold is made of aluminum. During inspection, the glass is placed flat on the reference block of the fixture, the detachable side positioning block is fixed, and the screw-on clamping device and clamping device are tightened. Using a tapered gap gauge and a steel ruler, the dimensional accuracy of the glass can be directly measured.
[0004] However, while this type of gauge can effectively measure and inspect automotive windshields, the placement platform and fixing block are often exposed, making them prone to dust accumulation. Repeatedly scraping away the accumulated dust is not very effective, which can lead to a decrease in the flatness of the glass during subsequent placement and inspection due to dust, thus reducing the accuracy of the measurement data on the gauge.
[0005] Therefore, in view of this, we have studied and improved the existing structure to propose a new automotive windshield inspection tool. Utility Model Content
[0006] The purpose of this utility model is to provide an automotive windshield inspection tool to solve the problem mentioned in the background art that the placement platform and fixing block are often exposed to the outside, and the surface is prone to dust accumulation, and the repeated scraping and cleaning of the accumulated dust is not very effective.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a vehicle windshield inspection tool, comprising an inspection tool body, a placement platform at the top of the inspection tool body, a pressure pump on the outer wall of the inspection tool body, a connecting pipe fixedly connected to the outer wall of the pressure pump and fitting against the bottom of the placement platform, an air extraction hole on the outer wall of the connecting pipe, a negative pressure hole on the outer wall of the placement platform, a connecting hole at the bottom of the placement platform located between the air extraction hole and the negative pressure hole, a servo motor on the outer wall of the inspection tool body, a threaded rod fixedly connected to the output end of the servo motor, a sliding frame threadedly connected to the outer wall of the threaded rod and slidably connected to the outer wall of the inspection tool body, and a second cleaning scraper detachably connected to the bottom of the sliding frame.
[0008] Furthermore, the outer wall of the connecting pipe has a square-shaped outline, and the inner wall of the connecting pipe has a square-shaped conveying cavity.
[0009] Furthermore, the air extraction hole and the connecting hole are interconnected with the negative pressure hole.
[0010] Furthermore, the sliding frame forms a reciprocating sliding structure with the fixture body through the threaded rod, and a reciprocating sliding groove is provided at the connection between the outer wall of the fixture body and the sliding frame.
[0011] Furthermore, the placement platform is positioned on the movement trajectory of the second cleaning scraper, and the length of the second cleaning scraper is adapted to the width of the placement platform.
[0012] Furthermore, a first cleaning scraper is detachably connected to the top of the sliding frame, an electric push rod is fixedly connected to the bottom of the inspection tool body, a lifting rod is fixedly connected to one end of the electric push rod, a connecting rod is fixedly connected to the outer wall of the lifting rod, and a fixed silicone pad located above the placement table is fixedly connected to the outer wall of the connecting rod.
[0013] Furthermore, the fixed silicone pad is positioned on the movement trajectory of the first cleaning scraper, and the length of the first cleaning scraper is greater than the spacing of the fixed silicone pad.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This invention utilizes a first and a second cleaning scraper. When measuring a car windshield on a placement platform using a tapered gap gauge and a steel ruler, to reduce the risk of uneven placement of the windshield due to dust on the platform, which could affect the accuracy of the windshield measurement data, a servo motor can be activated. The rotation of the threaded rod drives the sliding frame to slide along the outer wall of the fixture, and simultaneously drives the second cleaning scraper to remove dust from the top of the placement platform. At the same time, the first cleaning scraper reciprocates along the bottom of the fixed silicone pad, effectively reducing the interference of dust on the measurement of the car windshield. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the inspection tool of this utility model;
[0017] Figure 2 This is a three-dimensional structural diagram of the inspection tool of this utility model from another direction;
[0018] Figure 3 This is a schematic diagram of the connection structure between the sliding frame and the threaded rod of this utility model;
[0019] Figure 4 This is a schematic diagram of the air extraction hole location distribution structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the position distribution structure of the electric actuator of this utility model.
[0021] In the picture:
[0022] 1. Inspection fixture body; 2. Placement platform; 3. Vacuum pump; 4. Connecting pipe; 5. Air extraction port; 6. Connecting hole; 7. Negative pressure port; 8. Servo motor; 9. Threaded rod; 10. Sliding frame; 11. First cleaning scraper; 12. Second cleaning scraper; 13. Electric push rod; 14. Lifting rod; 15. Connecting rod; 16. Fixed silicone pad. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Example 1:
[0025] like Figures 1-5As shown, a car windshield inspection tool includes an inspection body 1, a placement platform 2 on the top of the inspection body 1, a pressure pump 3 on the outer wall of the inspection body 1, a connecting pipe 4 fixedly connected to the outer wall of the pressure pump 3 and fitting against the bottom of the placement platform 2, an air extraction hole 5 on the outer wall of the connecting pipe 4, a negative pressure hole 7 on the outer wall of the placement platform 2, a connecting hole 6 located between the air extraction hole 5 and the negative pressure hole 7 on the bottom of the placement platform 2, a servo motor 8 on the outer wall of the inspection body 1, a threaded rod 9 fixedly connected to the output end of the servo motor 8, a sliding frame 10 threadedly connected to the outer wall of the threaded rod 9 and slidably connected to the outer wall of the inspection body 1, and a second cleaning scraper 12 detachably connected to the bottom of the sliding frame 10.
[0026] like Figure 4 As shown, the outer wall of the connecting pipe 4 has a U-shaped outline, and the inner wall of the connecting pipe 4 has a U-shaped conveying cavity, which facilitates the all-round conveying of negative pressure gas through the U-shaped outline of the outer wall of the connecting pipe 4.
[0027] like Figure 5 As shown, the air extraction port 5 and the connecting port 6 are interconnected with the negative pressure port 7, which facilitates the convenient extraction and use of negative pressure gas.
[0028] like Figure 3 As shown, the sliding frame 10 forms a reciprocating sliding structure with the inspection body 1 through the threaded rod 9. The connection between the outer wall of the inspection body 1 and the sliding frame 10 is provided with a reciprocating sliding groove, which is conducive to the rotation of the threaded rod 9 and drives the sliding frame 10 to slide along the outer wall of the inspection body 1, thereby driving the first cleaning scraper 11 to slide back and forth.
[0029] like Figure 3 As shown, the placement platform 2 is set on the movement trajectory of the second cleaning scraper 12. The length of the second cleaning scraper 12 is adapted to the width of the placement platform 2, which is conducive to achieving the effect of cleaning dust on the surface of the placement platform 2 in all directions by adapting the length of the second cleaning scraper 12 to the width of the placement platform 2.
[0030] like Figure 3 and Figure 5 As shown, the top of the sliding frame 10 is detachably connected to a first cleaning scraper 11, the bottom of the inspection fixture body 1 is fixedly connected to an electric push rod 13, one end of the electric push rod 13 is fixedly connected to a lifting rod 14, the outer wall of the lifting rod 14 is fixedly connected to a connecting rod 15, and the outer wall of the connecting rod 15 is fixedly connected to a fixed silicone pad 16 located above the placement table 2. This facilitates the automatic fixing of the glass to be inspected by setting the electric push rod 13.
[0031] like Figure 3As shown, the fixed silicone pad 16 is set on the movement trajectory of the first cleaning scraper 11. The length of the first cleaning scraper 11 is greater than the setting spacing of the fixed silicone pad 16, which is beneficial to achieve the effect of repeatedly scraping and cleaning the dust adsorbed on the bottom of the fixed silicone pad 16 by setting the fixed silicone pad 16 on the movement trajectory of the first cleaning scraper 11.
[0032] Working principle: When using this type of automotive windshield inspection fixture, when the automotive windshield is placed on the placement table 2 and measured using a tapered gap ruler and a steel ruler, in order to reduce the possibility of uneven placement of the windshield due to dust on the placement table 2, which would affect the accuracy of the windshield measurement data, the servo motor 8 can be turned on. Through the rotation of the threaded rod 9, the sliding frame 10 is driven to slide along the outer wall of the fixture, and the second cleaning scraper 12 is driven to scrape the dust on the top of the placement table 2. At the same time, the first cleaning scraper 11 is driven to scrape back and forth along the bottom of the fixed silicone pad 16, thereby reducing the interference of dust on the measurement of the automotive windshield.
[0033] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. An automobile front windshield testing device comprising a testing device main body (1), characterized in that, The top of the detection tool body (1) is provided with a placing table (2), the outer wall of the detection tool body (1) is provided with a suction pump (3), the outer wall of the suction pump (3) is fixedly connected with a connecting pipe (4) which is attached to the bottom of the placing table (2), the outer wall of the connecting pipe (4) is provided with a suction hole (5), the outer wall of the placing table (2) is provided with a negative pressure hole (7), the bottom of the placing table (2) is provided with a connecting hole (6) which is arranged at the intermediate position between the suction hole (5) and the negative pressure hole (7), the outer wall of the detection tool body (1) is provided with a servo motor (8), the output end of the servo motor (8) is fixedly connected with a threaded rod (9), the outer wall of the threaded rod (9) is threadedly connected with a sliding frame (10) which is slidingly connected with the outer wall of the detection tool body (1), and the bottom of the sliding frame (10) is detachably connected with a second cleaning scraper (12).
2. The apparatus according to claim 1, wherein The outer wall of the connecting pipe (4) is in the shape of a mouth, and the inner wall of the connecting pipe (4) is provided with a conveying cavity in the shape of a mouth.
3. The apparatus according to claim 1, wherein The suction hole (5) and the connecting hole (6) are arranged in communication with the negative pressure hole (7).
4. The apparatus for testing the front windshield of a vehicle as set forth in claim 1, wherein The sliding frame (10) and the detection tool body (1) constitute a reciprocating sliding structure through the threaded rod (9), and the outer wall of the detection tool body (1) is provided with a reciprocating sliding groove at the connecting part of the sliding frame (10).
5. The apparatus for testing an automobile front windshield glass as recited in claim 1, wherein The placing table (2) is arranged on the movement track of the second cleaning scraper (12), and the length of the second cleaning scraper (12) is adapted to the width of the placing table (2).
6. The apparatus for testing an automobile front windshield glass as recited in claim 1, wherein The top of the sliding frame (10) is detachably connected with a first cleaning scraper (11), the bottom of the detection tool body (1) is fixedly connected with an electric push rod (13), one end of the electric push rod (13) is fixedly connected with a lifting rod (14), the outer wall of the lifting rod (14) is fixedly connected with a connecting rod (15), and the outer wall of the connecting rod (15) is fixedly connected with a fixed silica gel pad (16) which is located above the placing table (2).
7. An apparatus for testing an automobile front windshield glass according to claim 6, wherein The fixed silica gel pad (16) is arranged on the movement track of the first cleaning scraper (11), and the length of the first cleaning scraper (11) is greater than the arrangement interval of the fixed silica gel pad (16).
Citation Information
Patent Citations
Automobile front windshield testing fixture
CN221975977U