An automotive rear windshield bracket shear force test tooling and its test method

Abstract

The present invention relates to the technical field of shear force testing, and specifically discloses a shear force testing tooling for an automobile rear windshield bracket, which includes a base, a first support rod, an installation frame, and a testing mechanism. The testing mechanism includes a cylinder, a push rod, a triggering mechanism, and a force application component. The installation frame is of a shell structure. The cylinder is arranged on one side of the upper shell of the installation frame. The push rod is horizontally and fixedly connected to the end of the cylinder. When the rear windshield bracket is bonded to the installation frame, the cylinder pushes the push rod to move, thereby pushing the displacement block one to move towards the installation plate, and then pushing the connecting shaft to move. The cam extends out of the upper shell wall of the installation frame, and the upper edge of the rear windshield bracket contacts the bottom of the cam. After the rear windshield bracket is bonded and fixed, the cylinder continues to push the displacement block one to move towards the installation plate, and the push column drives the connecting shaft to rotate. When the cam rotates, the cam provides a shear force to the rear windshield bracket.

Description

Technical Field

[0001] The invention relates to the technical field of shear force testing, and in particular to a shear force testing tool for a rear windshield bracket of an automobile and a testing method thereof. Background Art

[0002] In the process of automobile rear windshield production, processing and installation, in order to detect the product qualification rate, it is necessary to conduct a shear force test on the automobile rear windshield bracket. The existing test method is to use manual bending test, which is labor-intensive and easy to cause worker injuries. This method is inefficient and the detection is inaccurate, and there is a hidden danger of failure, which seriously affects the subsequent installation and use of automobile factories. It is not convenient to apply shear force to the windshield bracket through other pulling devices, and it is easy to cause damage to the windshield bracket. Therefore, a shear force test tool for automobile rear windshield bracket is needed. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a shear force testing tool for a rear windshield bracket of an automobile and a testing method thereof.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0005] A shear force test tool for a rear windshield bracket of an automobile, comprising:

[0006] A base, a support rod, a mounting frame, and a testing mechanism. The mounting frame is arranged on the base through a support rod. The testing mechanism is arranged on the mounting frame and is close to the top of the mounting frame. The windshield bracket is bonded to the frame surface of the mounting frame through a sealant. The testing mechanism includes a cylinder, a push rod, a trigger mechanism, and a force-applying assembly. The mounting frame is a shell structure. The cylinder is arranged on one side of the upper end shell of the mounting frame. The push rod is horizontally fixedly connected to the end of the cylinder. The force-applying assembly is arranged in the upper end shell of the mounting frame. There are multiple groups of force-applying assemblies and they are evenly spaced along the length direction of the upper end shell of the mounting frame. A mounting plate is vertically arranged in the upper end shell of the mounting frame. The force-applying assembly includes a connecting shaft, a cam, and a limit plate. The connecting shaft horizontally passes through the plate surface of the mounting plate. The cam is arranged at the end of the connecting shaft. The cam passes through the upper end shell wall of the mounting frame. The limit plate is fixedly arranged on the wall of the connecting shaft. The mounting plate is between the limit plate and the cam. The trigger mechanism is arranged on the push rod, and the trigger mechanism is connected to the connecting shaft through transmission.

[0007] As a further improvement of this technical solution, multiple trigger mechanisms are provided and are respectively in one-to-one correspondence with multiple force-applying components. The trigger mechanism includes a first shifting block, a first connecting column, a first connecting sleeve, and a pushing column. The first shifting block is located on one side of the push rod and close to the limiting plate. One end of the first connecting column is connected to the wall of the first shifting block, and the other end of the first connecting column extends horizontally. There are two first connecting columns arranged in parallel. One end of the first connecting sleeve is fixedly connected to the wall of the push rod, and the other end of the first connecting sleeve is sleeved on the first connecting column. A first spring is sleeved on the first connecting column and the first connecting sleeve. One end of the first spring is connected to the wall of the push rod, and the other end of the first spring is connected to the wall of the first shifting block. The pushing column is vertically arranged at the bottom of the first shifting block. A spiral groove is provided on the wall of the connecting shaft, and the bottom end of the pushing column is fitted into the spiral groove of the connecting shaft. A pressure sensor is provided at the arc surface of the cam.

[0008] As a further improvement of this technical solution, a second shifting block is provided directly above the first shifting block. The connection method between the second shifting block and the first shifting block is the same as that between the first shifting block and the push rod. A first guiding groove is formed in the second shifting block and is arranged obliquely. A connecting plate is fixedly provided on the push rod, and a first guiding column is vertically arranged on the plate surface of the connecting plate. The first guiding column is fitted into the first guiding groove. An avoidance groove is formed at the top of the upper housing of the mounting frame and is parallel to the connecting shaft. A top rod is vertically arranged at the top of the second shifting block and passes through the avoidance groove at the top of the upper housing of the mounting frame.

[0009] As a further improvement of this technical solution, a feedback mechanism is provided at the top of the upper housing of the mounting frame. The feedback mechanism includes a column, a first bearing plate, a second bearing plate, and a feedback component. The column is vertically arranged at the top of the upper housing of the mounting frame. There are two columns arranged in parallel. A stop piece is provided at the top of the column. The first bearing plate and the second bearing plate are sleeved on the column. A second spring and a third spring are sleeved on the column. One end of the second spring contacts the plate surface of the first bearing plate, and the other end of the second spring contacts the stop piece at the top of the column. One end of the third spring contacts the plate surface of the second bearing plate, and the other end of the third spring contacts the top of the upper housing of the mounting frame. A trigger rod is horizontally and fixedly provided at the top of the top rod. The trigger rod extends horizontally and extends between the first bearing plate and the second bearing plate. The feedback component is arranged at the ends of the first bearing plate and the second bearing plate.

[0010] As a further improvement of this technical solution, a second support rod is fixedly provided at the end of the first bearing plate. A scale disk and an image sensor are provided at the end of the second support rod. The feedback component includes a third support rod, a second guiding column, and an indicating rod. The third support rod is fixedly provided at the end of the second bearing plate. The second guiding column is vertically arranged on the third support rod. The indicating rod is rotatably arranged at the end of the first bearing plate. A second guiding groove is formed in the indicating rod, and the second guiding column is fitted into the second guiding groove of the indicating rod.

[0011] As a further improvement of the technical solution, a drainage channel is arranged inside the installation frame, and a first water supply tank and a second water supply tank are arranged on the base. The first water supply tank stores hot water, and the second water supply tank stores ice water. The first water supply tank is connected to the drainage channel through a first connecting pipe, and the second water supply tank is connected to the drainage channel through a second connecting pipe. A first valve and a second valve are respectively arranged on the first connecting pipe and the second connecting pipe, and water pumps are arranged on the first water supply tank and the second water supply tank.

[0012] Compared with the prior art, the progress and advantages of the present invention are as follows: during the use of the present invention, when the rear windshield bracket is bonded to the installation frame, the upper edge of the rear windshield bracket contacts the bottom of the cam, which is convenient for aligning and installing the rear windshield bracket. After the rear windshield bracket is bonded and fixed, the cam provides a shearing force to the rear windshield bracket. By providing a shearing force to the rear windshield bracket through multiple sets of force-applying components, the force-bearing conditions of multiple positions of the rear windshield bracket can be detected.

[0013] When a certain set of force-applying components applies force to cause the rear windshield bracket to shift or break, the rear windshield bracket has no obstruction to the deflection of the cam of this group. The push rod and the first shifting block move away from each other, and the first guiding column drives the second shifting block to move downward, thereby driving the trigger rod to move downward, so that the first bearing plate and the second bearing plate move away from each other. Then, the second guiding column drives the indicating rod to deflect, and the image sensor detects the deflection of the indicating rod, indicating that a certain set of force-applying components causes the rear windshield bracket to shift or break. The magnitude of the shearing force received by the rear windshield bracket is reflected by the pressure sensor on the cam. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments of the present invention. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the cooperation between the installation frame of the present invention and the first water supply tank and the second water supply tank.

[0017] Figure 3 It is a schematic diagram of the test mechanism of the present invention.

[0018] Figure 4 It is a schematic diagram of the cooperation between the trigger mechanism and the force-applying components of the present invention.

[0019] Figure 5 It is a schematic diagram of the force-applying components of the present invention.

[0020] Figure 6 Schematic diagram of the triggering mechanism of the present invention.

[0021] Figure 7 Schematic diagram of the feedback mechanism of the present invention.

[0022] Figure 8 Schematic diagram of the feedback component of the present invention.

[0023] The labels in the figure are:

[0024] 10. Base; 110. First support rod; 120. Installation frame; 121. Avoidance groove; 130. First water supply tank; 131. First connecting pipe; 132. Second connecting pipe; 140. Second water supply tank

[0025] 20. Testing mechanism; 210. Cylinder; 220. Push rod; 221. Connecting plate; 222. First guiding column; 230. Triggering mechanism; 231. First shifting block; 232. First connecting column; 233. First connecting sleeve; 234. Pushing column; 235. Second shifting block; 236. First guiding groove; 237. Thrust rod; 238. Triggering rod; 240. Force application component; 241. Mounting plate; 242. Connecting shaft; 243. Cam; 244. Limiting plate; 245. Spiral groove

[0026] 30. Feedback mechanism; 310. Column; 320. First bearing plate; 330. Second bearing plate; 331. Second support rod; 332. Dial; 333. Image sensor; 340. Feedback component; 341. Third support rod; 342. Second guiding column; 343. Indicating rod; 344. Second guiding groove Detailed implementation manners

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0028] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams rather than actual drawings, and should not be construed as a limitation on the present invention; in order to better illustrate the embodiments of the present invention, some components in the accompanying drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0029] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, if terms such as "connection" are used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] As Figures 1 - 8 shown, a shear force test tooling for an automotive rear windshield bracket includes:

[0032] A base 10, a first support rod 110, a mounting frame 120, and a test mechanism 20. The mounting frame 120 is arranged on the base 10 through the first support rod 110. The test mechanism 20 is arranged on the mounting frame 120 and near the top of the mounting frame 120. The windshield bracket is bonded to the frame surface of the mounting frame 120 through sealant. The test mechanism 20 includes a cylinder 210, a push rod 220, a triggering mechanism 230, and a force application assembly 240. The mounting frame 120 is of a housing structure. The cylinder 210 is arranged on one side of the upper housing of the mounting frame 120. The push rod 220 is horizontally and fixedly connected to the end of the cylinder 210. The force application assembly 240 is arranged inside the upper housing of the mounting frame 120. There are multiple groups of the force application assembly 240 and they are evenly spaced along the length direction of the upper housing of the mounting frame 120. A mounting plate 241 is vertically arranged in a matching manner inside the upper housing of the mounting frame 120. The force application assembly 240 includes a connecting shaft 242, a cam 243, and a limiting plate 244. The connecting shaft 242 horizontally passes through the plate surface of the mounting plate 241. The cam 243 is arranged at the end of the connecting shaft 242. The cam 243 penetrates through the wall of the upper housing of the mounting frame 120. The limiting plate 244 is fixedly arranged on the wall of the connecting shaft 242. The mounting plate 241 is located between the limiting plate 244 and the cam 243. The triggering mechanism 230 is arranged on the push rod 220, and the triggering mechanism 230 is in transmission connection with the connecting shaft 242.

[0033] More specifically, multiple sets of triggering mechanisms 230 are provided and are respectively in one-to-one correspondence with multiple sets of force-applying components 240. The triggering mechanism 230 includes a first shifting block 231, a first connecting column 232, a first connecting sleeve 233, and a pushing column 234. The first shifting block 231 is located on one side of the push rod 220 and close to the limiting plate 244. One end of the first connecting column 232 is connected to the wall of the first shifting block 231, and the other end of the first connecting column 232 extends horizontally. Two first connecting columns 232 are provided and are arranged in parallel. One end of the first connecting sleeve 233 is fixedly connected to the wall of the push rod 220, and the other end of the first connecting sleeve 233 is sleeved on the first connecting column 232. A first spring is sleeved on the first connecting column 232 and the first connecting sleeve 233. One end of the first spring is connected to the wall of the push rod 220, and the other end of the first spring is connected to the wall of the first shifting block 231. The pushing column 234 is vertically arranged at the bottom of the first shifting block 231. A spiral groove 245 is provided on the wall of the connecting shaft 242, and the bottom end of the pushing column 234 is fitted into the spiral groove 245 of the connecting shaft 242. A pressure sensor is provided on the arc surface of the cam 243. When the rear windshield bracket is bonded to the mounting frame 120, the cylinder 210 pushes the push rod 220 to move, thereby pushing the first shifting block 231 to move in the direction close to the mounting plate 241, thereby pushing the connecting shaft 242 to move. The cam 243 extends out of the upper housing wall of the mounting frame 120, and the limiting plate 244 contacts the plate surface of the mounting plate 241. Then, the rear windshield bracket is bonded to the mounting frame 120, and the upper edge of the rear windshield bracket contacts the bottom of the cam 243. After the rear windshield bracket is bonded and fixed, the cylinder 210 continues to push the first shifting block 231 to move in the direction close to the mounting plate 241, and the pushing column 234 drives the connecting shaft 242 to rotate, thereby driving the cam 243 to rotate. When the cam 243 rotates, the cam 243 provides a shearing force to the rear windshield bracket.

[0034] As Figures 5 - 7 shown, a second shifting block 235 is provided directly above the first shifting block 231. The connection manner between the second shifting block 235 and the first shifting block 231 is the same as the connection manner between the first shifting block 231 and the push rod 220. A first guiding groove 236 is formed in the second shifting block 235. The first guiding groove 236 is inclined. A connecting plate 221 is fixedly provided on the push rod 220. A first guiding column 222 is vertically provided on the plate surface of the connecting plate 221. The first guiding column 222 is fitted into the first guiding groove 236. An avoidance groove 121 is formed at the top of the upper housing of the mounting frame 120. The avoidance groove 121 is parallel to the connecting shaft 242. A top rod 237 is vertically provided at the top of the second shifting block 235. The top rod 237 passes through the avoidance groove 121 at the top of the upper housing of the mounting frame 120.

[0035] As Figures 4 - 8As shown, a feedback mechanism 30 is provided at the top of the upper housing of the installation frame 120. The feedback mechanism 30 includes a vertical column 310, a first bearing plate 320, a second bearing plate 330, and a feedback component 340. The vertical column 310 is vertically arranged at the top of the upper housing of the installation frame 120. There are two vertical columns 310 arranged in parallel. A retaining piece is provided at the top of the vertical column 310. The first bearing plate 320 and the second bearing plate 330 are sleeved on the vertical column 310. A second spring and a third spring are sleeved on the vertical column 310. One end of the second spring contacts the plate surface of the first bearing plate 320, and the other end of the second spring contacts the retaining piece at the top of the vertical column 310. One end of the third spring contacts the plate surface of the second bearing plate 330, and the other end of the third spring contacts the top of the upper housing of the installation frame 120. The top of the ejector rod 237 is horizontally and fixedly provided with a trigger rod 238. The trigger rod 238 extends horizontally and extends between the first bearing plate 320 and the second bearing plate 330. The feedback component 340 is arranged at the ends of the first bearing plate 320 and the second bearing plate 330.

[0036] More specifically, a second support rod 331 is fixedly provided at the end of the first bearing plate 320. A dial 332 and an image sensor 333 are provided at the end of the second support rod 331. The feedback component 340 includes a third support rod 341, a second guide post 342, and an indicating rod 343. The third support rod 341 is fixedly provided at the end of the second bearing plate 330. The second guide post 342 is vertically arranged on the third support rod 341. The indicating rod 343 is rotatably arranged at the end of the first bearing plate 320. A second guide groove 344 is formed on the indicating rod 343. The second guide post 342 is correspondingly sleeved in the second guide groove 344 of the indicating rod 343. The shift block 231 moves towards the installation plate 241. The push rod 234 drives the connecting shaft 242 to rotate, thereby driving the cam 243 to rotate. When the cam 243 rotates, the cam 243 provides a shearing force to the rear windshield bracket. During the process of driving the cam 243 to rotate, the push rod 220 and the shift block 231 approach each other. The first guide post drives the shift block 235 to move upward, thereby driving the trigger rod 238 to move upward, thereby driving the first bearing plate 320 and the second bearing plate 330 to move upward synchronously. When a certain set of force application components 240 applies force to cause the rear windshield bracket to shift or break, the rear windshield bracket does not obstruct the deflection of the cam 243 of this set. The push rod 220 and the shift block 231 move away from each other. The first guide post 222 drives the shift block 235 to move downward, thereby driving the trigger rod 238 to move downward, so that the first bearing plate 320 and the second bearing plate 330 move away from each other. Then the second guide post 342 drives the indicating rod 343 to deflect. The image sensor 333 detects the deflection of the indicating rod 343, indicating that a certain set of force application components 240 causes the rear windshield bracket to shift or break. The magnitude of the shearing force received by the rear windshield bracket is reflected by the pressure sensor on the cam 243.

[0037] As Figure 2As shown in the figure, a drainage channel is provided inside the installation frame 120. A first water supply tank 130 and a second water supply tank 140 are provided on the base 10. The first water supply tank 130 stores hot water, and the second water supply tank 140 stores ice water. The first water supply tank 130 is connected to the drainage channel through a first connecting pipe 131, and the second water supply tank 140 is connected to the drainage channel through a second connecting pipe 132. A first valve and a second valve are respectively provided on the first connecting pipe 131 and the second connecting pipe 132. Water pumps are provided on the first water supply tank 130 and the second water supply tank 140. When the rear windshield bracket is bonded to the installation frame 120, ice water is drained into the drainage channel of the installation frame 120 to accelerate the bonding speed of the rear windshield bracket. When it is necessary to remove the rear windshield bracket, hot water is drained into the drainage channel of the installation frame 120 to heat the sealant, which is convenient for removing the rear windshield bracket.

[0038] Working principle:

[0039] During the use of the present invention, when the rear windshield bracket is bonded to the installation frame 120, the air cylinder 210 pushes the push rod 220 to move, thereby pushing the first displacement block 231 to move towards the installation plate 241, thereby pushing the connecting shaft 242 to move. The cam 243 extends out of the upper shell wall of the installation frame 120, and the limiting plate 244 contacts the plate surface of the installation plate 241. Then, the rear windshield bracket is bonded to the installation frame 120. The upper edge of the rear windshield bracket contacts the bottom of the cam 243. After the rear windshield bracket is bonded and fixed, the air cylinder 210 continues to push the first displacement block 231 to move towards the installation plate 241. The push post 234 drives the connecting shaft 242 to rotate, thereby driving the cam 243 to rotate. When the cam 243 rotates, the cam 243 provides a shearing force to the rear windshield bracket. During the process of driving the cam 243 to rotate, the push rod 220 and the first displacement block 231 approach each other. The first guiding post drives the second displacement block 235 to move upward, thereby driving the trigger rod 238 to move upward, thereby driving the first bearing plate 320 and the second bearing plate 330 to move upward synchronously. When a certain set of force application components 240 apply force to cause the rear windshield bracket to shift or break, the rear windshield bracket does not hinder the deflection of the cam 243 of this group. The push rod 220 and the first displacement block 231 move away from each other. The first guiding post 222 drives the second displacement block 235 to move downward, thereby driving the trigger rod 238 to move downward, so that the first bearing plate 320 and the second bearing plate 330 move away from each other. Then, the second guiding post 342 drives the indicating rod 343 to deflect. The image sensor 333 detects the deflection of the indicating rod 343, indicating that a certain set of force application components 240 causes the rear windshield bracket to shift or break. The magnitude of the shearing force received by the rear windshield bracket is reflected by the pressure sensor on the cam 243.

[0040] It should be noted that the above specific embodiments are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art should understand that various modifications, equivalent replacements, changes, etc. can be made to the present invention. However, as long as these transformations do not deviate from the spirit of the present invention, they should be within the protection scope of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. An automotive rear windshield bracket shear force test tooling, characterized in that, It includes: A base, a first support rod, an installation frame, and a testing mechanism. The installation frame is arranged on the base through the first support rod. The testing mechanism is arranged on the installation frame and near the top of the installation frame. The windshield bracket is bonded to the frame surface of the installation frame through sealant. The testing mechanism includes a cylinder, a push rod, a triggering mechanism, and a force application component. The installation frame is of a shell structure. The cylinder is arranged on one side of the upper shell of the installation frame. The push rod is horizontally and fixedly connected to the end of the cylinder. The force application component is arranged in the upper shell of the installation frame. There are multiple groups of force application components and they are evenly spaced along the length direction of the upper shell of the installation frame. An installation plate is vertically arranged in a matching manner in the upper shell of the installation frame. The force application component includes a connecting shaft, a cam, and a limiting plate. The connecting shaft horizontally passes through the plate surface of the installation plate. The cam is arranged at the end of the connecting shaft. The cam penetrates through the wall of the upper shell of the installation frame. The limiting plate is fixedly arranged on the wall of the connecting shaft. The installation plate is between the limiting plate and the cam. The triggering mechanism is arranged on the push rod and is in transmission connection with the connecting shaft.

2. The shear force test tooling for the rear windshield bracket of an automobile according to claim 1, wherein There are multiple groups of triggering mechanisms and they respectively correspond to multiple groups of force application components one by one. The triggering mechanism includes a first displacement block, a first connecting column, a first connecting sleeve, and a push column. The first displacement block is on one side of the push rod and near the limiting plate. One end of the first connecting column is connected to the wall of the first displacement block. The other end of the first connecting column extends horizontally. There are two first connecting columns and they are arranged in parallel. One end of the first connecting sleeve is fixedly connected to the wall of the push rod. The other end of the first connecting sleeve is sleeved on the first connecting column. A first spring is sleeved on the first connecting column and the first connecting sleeve. One end of the first spring is connected to the wall of the push rod. The other end of the first spring is connected to the wall of the first displacement block. The push column is vertically arranged at the bottom of the first displacement block. A spiral groove is arranged on the wall of the connecting shaft. The bottom end of the push column is inserted into the spiral groove of the connecting shaft in a matching manner. A pressure sensor is arranged at the arc surface of the cam.

3. The shear force test tooling for an automotive rear windshield bracket according to claim 2, characterized in that A second displacement block is arranged directly above the first displacement block. The connection mode between the second displacement block and the first displacement block is the same as the connection mode between the first displacement block and the push rod. A first guiding groove is formed on the second displacement block. The first guiding groove is arranged obliquely. A connecting plate is fixedly arranged on the push rod. A first guiding column is vertically arranged on the plate surface of the connecting plate. The first guiding column is inserted into the first guiding groove in a matching manner. An avoidance groove is formed at the top of the upper shell of the installation frame. The avoidance groove is parallel to the connecting shaft. A top rod is vertically arranged at the top of the second displacement block. The top rod passes through the avoidance groove at the top of the upper shell of the installation frame.

4. The shear force test tooling for an automotive rear windshield bracket according to claim 3, characterized in that, At the top of the upper housing of the installation frame, a feedback mechanism is provided. The feedback mechanism includes a vertical column, a first bearing plate, a second bearing plate, and a feedback component. The vertical column is vertically arranged at the top of the upper housing of the installation frame. There are two vertical columns arranged in parallel. A stop piece is provided at the top of the vertical column. The first bearing plate and the second bearing plate are sleeved on the vertical column. A second spring and a third spring are sleeved on the vertical column. One end of the second spring contacts the plate surface of the first bearing plate, and the other end of the second spring contacts the stop piece at the top of the vertical column. One end of the third spring contacts the plate surface of the second bearing plate, and the other end of the third spring contacts the top of the upper housing of the installation frame. A trigger rod is horizontally and fixedly arranged at the top of the ejector rod. The trigger rod extends horizontally and extends into the space between the first bearing plate and the second bearing plate. The feedback component is arranged at the ends of the first bearing plate and the second bearing plate.

5. The shear force test tooling for an automotive rear windshield bracket according to claim 4, characterized in that, A second support rod is fixedly arranged at the end of the first bearing plate. A scale disk and an image sensor are arranged at the end of the second support rod.

6. The shear force test tooling for an automotive rear windshield bracket according to claim 5, characterized in that, The feedback component includes a third support rod, a second guide post, and an indicating rod. The third support rod is fixedly arranged at the end of the second bearing plate. The second guide post is vertically arranged on the third support rod. The indicating rod is rotatably arranged at the end of the first bearing plate. A second guide groove is formed on the indicating rod. The second guide post is correspondingly sleeved in the second guide groove of the indicating rod.

7. The shear force test tooling for an automotive rear windshield bracket according to claim 6, wherein, A drainage channel is arranged inside the installation frame. A first water supply tank and a second water supply tank are arranged on the base. Hot water is stored in the first water supply tank, and ice water is stored in the second water supply tank. The first water supply tank is communicated with the drainage channel through a first connecting pipe, and the second water supply tank is communicated with the drainage channel through a second connecting pipe. A first valve and a second valve are respectively arranged on the first connecting pipe and the second connecting pipe. Water pumps are arranged on the first water supply tank and the second water supply tank.

8. The test method of a shear force test tool for an automotive rear windshield bracket according to claim 7, wherein: S1. When the rear windshield bracket is bonded to the installation frame, the air cylinder pushes the push rod to move, thereby pushing the first displacement block to move towards the installation plate, thereby pushing the connecting shaft to move. The cam extends out of the wall of the upper housing of the installation frame. The limiting plate contacts the plate surface of the installation plate. Then, the rear windshield bracket is bonded to the installation frame. The upper edge of the rear windshield bracket contacts the bottom of the cam. After the rear windshield bracket is bonded and fixed, the air cylinder continues to push the first displacement block to move towards the installation plate. The push post drives the connecting shaft to rotate, thereby driving the cam to rotate. When the cam rotates, the cam provides a shear force to the rear windshield bracket; During the process of driving the cam to rotate, the push rod and the first displacement block approach each other. The first guiding column drives the second displacement block to move upward, thereby driving the trigger rod to move upward, and then driving the first bearing plate and the second bearing plate to move upward synchronously. When a certain set of force - applying components applies force to cause the rear windshield bracket to shift or break, the rear windshield bracket does not obstruct the deflection of the cam of this set. The push rod and the first displacement block move away from each other. The first guiding column drives the second displacement block to move downward, thereby driving the trigger rod to move downward, so that the first bearing plate and the second bearing plate move away from each other. Then the second guiding column drives the indicating rod to deflect, and the image sensor detects the deflection of the indicating rod, indicating that a certain set of force - applying components causes the rear windshield bracket to shift or break. The magnitude of the shear force received by the rear windshield bracket is reflected by the pressure sensor on the cam.

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