Tool for releasing torque test of brake pad

Abstract

The utility model provides a tool for a release torque test of a brake pad, which comprises a clamp used for fixing brake calipers, a torque sensor used for measuring torque, a wrench in torque connection with the torque sensor and a connecting mechanism used for connecting a brake disc and the torque sensor, and is characterized in that the clamp is provided with at least two mounting holes; the at least two mounting holes are formed in the same horizontal line at intervals and used for horizontally fixing the brake calipers. According to the tool provided by the utility model, the brake caliper and the brake disc are horizontally fixed and are not influenced by gravity, so that test failure caused by the fact that the brake disc is separated from the brake pad before the test is started is not easy to occur, and the success rate of the release moment test of the brake pad is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component testing, in particular to a tool for testing the disengagement torque of a brake pad. Background Art

[0002] After a car has been parked for a long time, the active elements of the brake disc and brake pad will produce an electrochemical reaction, causing adhesion between the brake disc and the brake pad. The adhesion between the brake disc and the brake pad is more serious in coastal cities, which requires users to step on the accelerator to start the next time. Therefore, a disengagement torque test is required to test the torque when the brake disc and brake pad are disengaged to determine whether improvements are needed, and the environmental humidity in coastal areas needs to be simulated.

[0003] The existing brake pad disengagement torque test is usually carried out using an inertia test bench. However, when the brake caliper is fixed, the brake disc is easily loosened due to the vibration of the locking process, resulting in test failure. Before testing the disengagement torque, the brake disc and brake pad need to be clamped for two to three days in a simulated temperature and humidity environment. If the brake disc is loosened due to the vibration of the locking process, the simulation needs to be repeated, which will increase the time cost. Utility Model Content

[0004] The utility model aims to provide a tooling for a brake pad disengagement torque test, wherein horizontally spaced mounting holes are arranged on the fixture, so that the brake caliper can be horizontally fixed through the mounting holes, and the fixing method is simple, thereby solving the problem in the prior art that the brake disc fixed on the inertia test bench is easy to loosen and cause the test failure.

[0005] In order to achieve one of the purposes of the above-mentioned utility model, an embodiment of the utility model provides a tool for a brake pad disengagement torque test, including a clamp for fixing a brake caliper, a torque sensor for measuring torque, a wrench connected to the sensor torque, and a connecting mechanism for connecting a brake disc and a torque sensor, wherein the clamp is provided with at least two mounting holes, and the at least two mounting holes are spaced apart on the same horizontal line for horizontally fixing the brake caliper.

[0006] As a further improvement of one embodiment of the utility model, the connecting mechanism includes a fixing member connected to the torque sensor and an adjusting member used to connect to the brake disc, and the adjusting member includes a fixed end connected to the fixing member and a free end that rotates around the connection between the adjusting member and the fixing member.

[0007] As a further improvement of an embodiment of the utility model, the adjusting member is provided with an adjusting hole, and the adjusting hole extends along the extending direction of the adjusting member.

[0008] As a further improvement of an implementation manner of the utility model, the adjusting member is arc-shaped.

[0009] As a further improvement of an embodiment of the utility model, the clamp includes a first clamp and a second clamp, the first clamp is used to fix the brake caliper, and the second clamp is used to fix the brake disc.

[0010] As a further improvement of an embodiment of the utility model, a plurality of fixing grooves are arranged on the top of the second clamp, and the plurality of fixing grooves are arranged at intervals in the horizontal direction.

[0011] As a further improvement of an embodiment of the utility model, the first clamp includes a top plate, a bottom plate and a support column connecting the top plate and the bottom plate, and the mounting hole is arranged on the top plate.

[0012] As a further improvement of an embodiment of the utility model, the top plate is provided with a clearance hole, the shape of the clearance hole matches the shape of the second clamp, and the second clamp passes through the clearance hole.

[0013] As a further improvement of an embodiment of the utility model, the second clamp is detachably connected to the bottom plate of the first clamp.

[0014] As a further improvement of one embodiment of the utility model, the base plate is provided with a downwardly opening clearance groove and at least two positioning holes connected to the clearance groove, and a positioning groove is provided at the bottom of the second clamp corresponding to the positioning hole, and the second clamp is fixed to the base plate through the positioning hole and the positioning groove.

[0015] One or more technical solutions provided by the utility model have at least the following technical effects or advantages:

[0016] In the tooling for the brake pad disengagement torque test provided by the utility model, the brake caliper is fixed by a clamp, and the brake caliper is provided with at least two mounting holes which can be installed with screws or the like through the holes on the brake caliper, and at least two mounting holes on the clamp are located on the same horizontal line, so that the brake caliper is fixed horizontally, making the installation process more stable, greatly reducing the probability of the brake disc and the brake pad installed in the brake caliper being loosened, and greatly improving the test success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a tooling for a disengagement torque test of a brake pad in an embodiment of the utility model.

[0018] Figure 2 yes Figure 1 Schematic diagram of the matching of the brake components.

[0019] Figure 3 yes Figure 1 Schematic diagram of the coordination between the brake disc and the connecting mechanism.

[0020] Figure 4 yes Figure 1 Schematic diagram of the structure of the clamp.

[0021] Figure 5 yes Figure 1 Top view of the tooling for the disengagement torque test of the middle brake pad.

[0022] Figure 6 yes Figure 5 Schematic cross-sectional view along line AA.

[0023] 1. Clamp; 11. First clamp; 111. Top plate; 1111. Mounting hole; 1112. Clearance hole; 112. Bottom plate; 1121. Clearance groove; 1122. Positioning hole; 113. Support column; 12. Second clamp; 121. Fixing groove; 122. Positioning groove; 2. Brake caliper; 3. Brake pad; 4. Brake disc; 41. Second connecting hole; 5. Connecting mechanism; 51. Fixing piece; 511. Center disc; 512. Bump; 52. Adjusting piece; 521. Adjusting hole; 6. Torque sensor; 7. Wrench. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Terms such as "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used herein to indicate spatial relative positions are used for the purpose of convenience to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. Terms of spatial relative positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the drawings.

[0026] For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] Furthermore, it should be understood that although the terms first, second, etc. may be used herein to describe various elements or structures, these described objects should not be limited by these terms. These terms are only used to distinguish these described objects from each other. For example, a first clamp may be referred to as a second clamp, and similarly, a second clamp may also be referred to as a first clamp, without departing from the scope of protection of this application.

[0029] The utility model embodiment provides a tool for testing the disengagement torque of a brake pad 3, such as Figure 1 As shown, it includes a clamp 1 for fixing the brake caliper 2, a torque sensor 6 for measuring torque, a wrench 7 connected to the sensor torque, and a connecting mechanism 5 for connecting the brake disc 4 and the torque sensor 6. The clamp 1 is provided with at least two mounting holes 1111, and the at least two mounting holes 1111 are spaced apart on the same horizontal line for horizontally fixing the brake caliper 2.

[0030] In the braking system of a car, Figure 2 As shown, two brake pads 3 are fixed in the brake caliper 2, and the brake disc 4 is arranged between the two brake pads 3. When the user steps on the brake pedal, the hydraulic pressure pushes the brake caliper 2, and the two brake pads 3 clamp the two sides of the brake disc 4 to produce friction, thereby achieving braking. When the car is parked, the brake disc 4 and the brake pad 3 are continuously clamped, and the active elements between the two will produce an electrochemical reaction, causing adhesion between the brake disc 4 and the brake pad 3, especially in coastal cities, the adhesion between the brake disc 4 and the brake pad 3 is more serious.

[0031] The disengagement torque test of the utility model is to spray a 5% salt solution before and after the brake pad 3 in the brake caliper 2 clamps the brake disc 4, and clamp it for a set time under set temperature and humidity conditions, and then release the clamping and apply torque to determine the maximum torque when the brake disc 4 is disengaged from the brake pad 3.

[0032] In the present invention, the brake caliper 2, the brake pad 3 and the brake disc 4 are classified as a brake assembly, and a storage space for accommodating the brake assembly is defined between the fixture 1 and the connecting mechanism 5. The brake pad 3 is arranged in the brake caliper 2, and the brake caliper 2 has its own connection hole (the first connection hole on the brake caliper 2 is blocked by the brake disc 4 and is not shown). At least two mounting holes 1111 on the fixture 1 are installed in cooperation with the first connection hole of the brake caliper 2, and can be fixed by screws, bolts, etc. At least two mounting holes 1111 are arranged horizontally at intervals, so that after the brake caliper 2 is fixed, the brake disc 4 is arranged horizontally. At this time, the gravity of the brake disc 4 is in the same direction as the clamping force of the brake pad 3 clamping the brake disc 4, and the gravity of the brake disc 4 will not affect the clamping force, and therefore will not affect the test results.

[0033] Furthermore, the connecting mechanism 5 includes a fixing member 51 connected to the torque sensor 6 and an adjusting member 52 for connecting to the brake disc 4, and the adjusting member 52 includes a fixed end connected to the fixing member 51 and a free end rotating around the connection between the adjusting member 52 and the fixing member 51.

[0034] Since different companies have different models of brake discs 4, the positions and numbers of connecting holes (the second connecting holes 41 on the brake disc 4) used for connecting and installing with the wheel hub on different models of brake discs 4 are different. Therefore, the connecting mechanism 5 is provided with a fixing part 51 fixed to the torque sensor 6 and an adjusting part 52 which can be changed according to the position of different models of brake discs 4 and thus connected to the brake disc 4.

[0035] like Figure 3 In the embodiment, the fixing member 51 includes a circular center disk 511 and three protrusions 512 connected to the center disk 511. The center disk 511 is connected to the torque sensor 6. The three protrusions 512 are evenly spaced along the circumference of the circular center disk 511 and connected to the adjusting member 52. The number of protrusions 512 corresponding to the adjusting member 52 is also set to three. The position of any adjusting member 52 can be adjusted as needed, so that the adjusting member 52 rotates around the connection point between the adjusting member 52 and the fixing member 51, and then connects with the protrusions 512, so that the adjusting member 52 can rotate according to the model of the brake disc 4, so as to be connected with the second connection hole 41 on the brake disc 4.

[0036] Of course, the shape of the center disc 511 is not limited to a circle, and the number of the protrusions 512 is not limited to three. The three protrusions 512 can play a better fixing role and can adapt to various models of brake discs 4.

[0037] Further, the adjusting member 52 is provided with an adjusting hole 521, and the adjusting hole 521 extends along the extending direction of the adjusting member 52. The adjusting hole 521 is provided in a long strip to adapt to different types of brake discs 4. Before one end of the adjusting member 52 is connected to the fixing member 51, the adjusting member 52 is first rotated so that the second connecting hole 41 on the brake disc 4 is completely connected with the long strip-shaped adjusting hole 521 on the adjusting member 52, and then one end of the adjusting member 52 is connected to the fixing member 51, and the adjusting member 52 and the brake disc 4 are fixed through the adjusting hole 521 and the second connecting hole 41.

[0038] Preferably, the adjusting member 52 is in an arc shape, that is, the long strip-shaped adjusting member 52 is also in an arc shape.

[0039] In some embodiments, the clamp 1 includes a first clamp 11 and a second clamp 12 , the first clamp 11 is used to fix the brake caliper 2 , and the second clamp 12 is used to fix the brake disc 4 .

[0040] Among them, Figure 4 In the embodiment, a plurality of fixing grooves 121 are arranged at the top of the second clamp 12, and the plurality of fixing grooves 121 are arranged at intervals in the horizontal direction. After the brake caliper 2 is fixed to the first clamp 11, the brake disc 4 is arranged horizontally, and the second connecting hole 41 on the brake disc 4 is aligned with the fixing groove 121 arranged at the top of the second clamp 12, and screws, bolts, etc. are sequentially passed through the adjustment hole 521 and the second connecting hole 41 and then enter the fixing groove 121, so that the second clamp 12, the brake disc 4 and the connecting mechanism 5 are fixed.

[0041] Furthermore, the first fixture 11 includes a top plate 111, a bottom plate 112, and a support column 113 connecting the top plate 111 and the bottom plate 112, and the mounting hole 1111 is provided on the top plate 111. The arrangement of the bottom plate 112, the top plate 111, and the support column 113 of the first fixture 11 not only plays a role in clamping the brake caliper 2 under the action of the mounting hole 1111, but the bottom plate 112, the top plate 111, and the support column 113 also play a role in supporting a seat to support the entire fixture.

[0042] Specifically, the top plate 111 is provided with a clearance hole 1112, the shape of which matches the shape of the second clamp 12, and the second clamp 12 passes through the clearance hole 1112. Figure 4 In the figure, the second clamp 12 is composed of two cylinders with different diameters, wherein the upper part is a cylinder with a larger diameter and a smaller height, and the lower part is connected to a cylinder with a smaller diameter and a higher height. The clearance hole 1112 is circular and the inner diameter of the circular clearance hole 1112 is the same as the diameter of the lower cylinder. The second clamp 12 extends into the clearance hole 1112 from top to bottom and is supported on the bottom plate 112.

[0043] Preferably, the second clamp 12 is detachably connected to the bottom plate 112 of the first clamp 11. Since the fixing groove 121 on the second clamp 12 corresponds to the second connection hole 41 on the brake disc 4, different types of brake discs 4 usually need to be matched with corresponding second clamps 12. The first clamp 11 can be fixedly arranged, and the second clamp 12 is detachably connected to the bottom plate 112 of the first clamp 11, and the second clamp 12 can be replaced only as needed, thereby enhancing the versatility of the first clamp 11.

[0044] Furthermore, the bottom plate 112 is provided with a downwardly opening recess 1121 and at least two positioning holes 1122 connected to the recess 1121 , and a positioning groove 122 is provided at the bottom of the second clamp 12 corresponding to the positioning hole 1122 , and the second clamp 12 is fixed to the bottom plate 112 via the positioning hole 1122 and the positioning groove 122 .

[0045] The first clamp 11 and the second clamp 12 are usually fixed by screws, etc. The ends of the screws, etc. will protrude from the bottom surface of the base plate 112. A clearance groove 1121 is provided on the base plate 112 so that the ends of the screws, etc. can be accommodated in the clearance groove 1121. The screws pass through the positioning holes 1122 and extend into the positioning groove 122 to fix the second clamp 12 to the base plate 112.

[0046] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0047] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A tool for testing the disengagement torque of a brake pad, characterized in that: It includes a clamp for fixing a brake caliper, a torque sensor for measuring torque, a wrench connected to the sensor torque, and a connecting mechanism for connecting a brake disc and the torque sensor. The clamp is provided with at least two mounting holes, and the at least two mounting holes are spaced apart on the same horizontal line for horizontally fixing the brake caliper.

2. The tool for testing the disengagement torque of the brake pad according to claim 1, characterized in that: The connecting mechanism includes a fixing member connected to the torque sensor and an adjusting member used to connect to the brake disc, and the adjusting member includes a fixed end connected to the fixing member and a free end rotating around the connection between the adjusting member and the fixing member.

3. The tool for testing the disengagement torque of the brake pad according to claim 2, characterized in that: The adjusting member is provided with an adjusting hole, and the adjusting hole extends along an extending direction of the adjusting member.

4. The tool for testing the disengagement torque of the brake pad according to claim 3, characterized in that: The adjusting member is arc-shaped.

5. The tool for testing the disengagement torque of a brake pad according to claim 1, characterized in that: The clamp comprises a first clamp and a second clamp, wherein the first clamp is used to fix the brake caliper, and the second clamp is used to fix the brake disc.

6. The tool for testing the disengagement torque of the brake pad according to claim 5, characterized in that: The top of the second clamp is provided with a plurality of fixing grooves, and the plurality of fixing grooves are arranged at intervals in the horizontal direction.

7. The tool for testing the disengagement torque of the brake pad according to claim 5, characterized in that: The first fixture includes a top plate, a bottom plate and a support column connecting the top plate and the bottom plate, and the mounting hole is arranged on the top plate.

8. The tool for testing the disengagement torque of the brake pad according to claim 7, characterized in that: The top plate is provided with a clearance hole, the shape of the clearance hole matches the shape of the second clamp, and the second clamp passes through the clearance hole.

9. The tool for testing the disengagement torque of the brake pad according to claim 8, characterized in that: The second clamp is detachably connected to the bottom plate of the first clamp.

10. The tool for testing the disengagement torque of the brake pad according to claim 9, characterized in that: The bottom plate is provided with a downwardly opening clearance groove and at least two positioning holes connected to the clearance groove, and the bottom of the second clamp is provided with a positioning groove corresponding to the positioning hole, and the second clamp is fixed to the bottom plate through the positioning hole and the positioning groove.

Images