Automobile brake caliper sealing performance detection device

Abstract

The utility model relates to the technical field of brake caliper detection, in particular to an automobile brake caliper sealing performance detection device, which comprises a working table, a propeller, a connecting element and a sealing jig, and is characterized in that the propeller and the brake caliper are arranged on the working table; the output end of the propeller is connected with one end of the sealing jig through the connecting element; the device further comprises an air gap detector, the sealing jig is of a hard structure, the sealing jig is provided with an air channel, the end, away from the propeller, of the sealing jig can be attached to the sealing face of a measuring head of the brake caliper, and the air gap detector is communicated with an oil inlet hole located in the measuring head through the air channel. According to the utility model, the assembly state of real vehicle hard connection can be simulated, product defects such as scars, poor roughness and poor planeness of a sealing surface can be effectively detected, and the stability of a test result and the detection precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake caliper detection, and more specifically to a sealing detection device for automobile brake calipers. Background Art

[0002] Automobile braking performance is an important indicator of vehicle safety. With the development of electric vehicles, the requirements for braking performance are getting higher and higher. The brake caliper is a key component of the automobile braking system. Once there is a problem with its sealing, it will cause leakage in the braking system and reduce the braking effect. In severe cases, it may cause traffic accidents and even threaten personal and property safety. Therefore, in the automobile manufacturing process, it is particularly important to test the sealing of the brake caliper.

[0003] The connection structure of automobile brake calipers on the market mostly adopts hard connection (the brake caliper and brake hose joint are connected by metal gaskets and bolts), but the current common brake caliper sealing detection device adopts soft connection, which cannot truly simulate the actual situation of vehicle installation and cannot detect scratches, poor roughness, and poor flatness / verticality on the sealing surface.

[0004] The prior art discloses a seal detection tool for a brake caliper, including a workbench, the workbench is provided with a brake caliper fixing device, a pressure measuring device, and a driving device for driving the pressure measuring device, the pressure measuring device is arranged between the brake caliper fixing device and the driving device, the pressure measuring device includes a pressure sensor, the pressure sensor includes a pressure sensing end and a digital display end, and the pressure sensing end fixing sleeve is provided with a piston adapted to the brake fluid inlet of the brake caliper. In this scheme, the piston enters the brake fluid inlet to compress the air in the sealed space inside the brake caliper to build pressure and detect the seal, but it is impossible to detect product airtight defects such as scratches, poor roughness, and poor flatness on the sealing surface of the caliper, and the stability of the test results and the detection accuracy are low. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a vehicle brake caliper sealing detection device, which can simulate the assembly state of the real vehicle hard connection, effectively detect product defects such as scratches on the sealing surface, poor roughness, poor flatness, etc., and improve the stability of the test results and the detection accuracy.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] Provided is a vehicle brake caliper sealing detection device, comprising a workbench, a pusher, a connecting element and a sealing fixture, wherein the pusher and the brake caliper are mounted on the workbench, and the output end of the pusher is connected to one end of the sealing fixture through the connecting element; and further comprising an air gap detector, wherein the sealing fixture is a hard structure, the sealing fixture is provided with an air channel, and the end of the sealing fixture away from the pusher can be fitted with a sealing surface of a probe of the brake caliper, and the air gap detector is connected to an oil inlet hole located at the probe through the air channel.

[0008] The utility model of the automobile brake caliper sealing detection device includes a workbench, a pusher, a connecting element, a sealing jig and an air gap detector. When in use, after the brake caliper is fixed on the workbench, the pusher pushes the connecting element and the sealing jig forward, so that the sealing jig fits with the sealing surface of the probe on the brake caliper. At this time, the air passage is connected to the oil inlet hole of the probe, and then the air gap detector is used to supply air to the oil inlet hole through the air passage of the sealing jig, so that the cylinder of the brake caliper maintains a certain air pressure. After a certain period of time, the air pressure in the cylinder is detected by the air gap detector, and the sealing of the brake caliper is judged by whether there is leakage through the change of the air pressure. In the utility model, the sealing jig is a hard structure, and the sealing jig is used to fit with the sealing surface of the probe, which can simulate the assembly state of the hard connection of the real vehicle. The air gap detector can effectively detect product defects such as scratches on the sealing surface, poor roughness, and poor flatness.

[0009] Furthermore, the sealing fixture includes a sealing head, a sealing body and a connecting section, the sealing body is connected between the sealing head and the connecting section, the connecting section is fixedly connected to the connecting element, the air passage is opened in the sealing body, the sealing head is provided with an air hole, and the air passage is connected to the oil inlet through the air hole. The output end of the thruster is connected to the connecting section through the connecting element, and the air passage is opened in the sealing body to avoid the air passage being opened in the connecting section to affect the rigidity of the connecting section, and to meet the connection of the air gap detector, and the setting of the sealing head can match the sealing surface of the probe.

[0010] Furthermore, the sealing head is provided with at least two air holes, and the air holes are distributed along the circumference of the sealing head. Blowing air through the two air holes can make the gas blown out from the sealing fixture more uniform, the test result more stable, and the detection accuracy higher.

[0011] Furthermore, an annular groove is provided on the top of the sealing head, and the air hole is connected to the oil inlet hole through the groove. After the sealing head is fitted with the sealing surface of the measuring head, the groove is located on the inner side of the sealing surface and can be connected to the oil inlet hole. The gas blown out from the air hole is dispersed along the groove to the inner circumference of the sealing surface of the measuring head, which can achieve balanced air intake and further improve the stability of the test results and the detection accuracy.

[0012] Furthermore, the airway includes an air inlet, a collecting airway and a dispersed airway, the air gap detector is connected to the air inlet, the two ends of the collecting airway are respectively connected to the air inlet and the dispersed airway, and the air hole is connected to the dispersed airway. When the dispersed airway is processed, a processing hole is generated, and a plug is set in the processing hole to block it to prevent air leakage from the sealing fixture.

[0013] Furthermore, the sealing fixture is a beryllium bronze structure. Beryllium bronze has high hardness and wear resistance, and has a long service life. When used as a sealing fixture, it will not damage the inspected parts and can meet the inspection requirements.

[0014] Furthermore, the connecting element is an elastic connecting piece. The propeller drives the sealing jig forward. When there is a difference in the matching angle between the sealing jig and the probe, when the sealing jig partially contacts the sealing surface, the propeller continues to push the sealing jig. At this time, the elastic connecting piece can bend and stretch, driving the sealing jig to swing, so that the sealing jig fits the sealing surface. The elastic connecting piece can prevent low detection efficiency due to the difference in matching angle, and has good adaptability and high versatility to the product being tested.

[0015] Furthermore, the elastic connector is a metal spring coupling. A plurality of slits are provided in the middle of the metal spring coupling so that a leaf spring is formed in the middle of the metal spring coupling, allowing eccentricity, deflection angle and end clearance; the metal spring coupling is a super-hard aluminum alloy structure with extremely high torsional rigidity and low moment of inertia.

[0016] Furthermore, a support frame is provided on the top of the workbench, and the propeller is installed on the support frame. The support frame can raise the propeller and the sealing fixture to ensure that the sealing fixture and the sealing surface of the measuring head can be accurately matched.

[0017] Furthermore, a fixing device is provided on the top of the workbench, and the brake caliper is mounted on the fixing device. The brake caliper is fixedly placed on the fixing device to prevent the brake caliper from being pushed when the thruster pushes the sealing jig during the detection process, thereby preventing the sealing jig from being tightly fitted with the sealing surface.

[0018] Compared with the prior art, the automobile brake caliper sealing detection device of the utility model has the following beneficial effects:

[0019] It can simulate the assembly state of the hard connection of the real vehicle, effectively detect product defects such as scratches on the sealing surface, poor roughness, poor flatness, etc., and improve the stability of test results and detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a vehicle brake caliper sealing detection device in an embodiment of the utility model;

[0021] Figure 2 for Figure 1 A magnified view of the part A in the middle;

[0022] Figure 3 It is a schematic diagram of the structure of the sealing fixture in the embodiment of the utility model.

[0023] In the accompanying drawings: 1-workbench; 11-first base plate; 12-second base plate; 2-fixing device; 3-support frame; 4-thruster; 5-connecting element; 6-sealing fixture; 61-sealing head; 611-air hole; 612-groove; 62-sealing body; 621-air inlet; 622-collecting air channel; 623-dispersing air channel; 624-processing hole; 63-connecting section; 7-brake caliper; 71-probe; 711-oil inlet hole; 712-sealing surface. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0025] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it 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 direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] Embodiment 1

[0027] A vehicle brake caliper sealing detection device, such as Figure 1 , Figure 2 As shown, it includes a workbench 1, a thruster 4, a connecting element 5 and a sealing fixture 6. The thruster 4 and the brake caliper 7 are installed on the workbench 1, and the output end of the thruster 4 is connected to one end of the sealing fixture 6 through the connecting element 5; it also includes an air gap detector, the sealing fixture 6 is a hard structure, and the sealing fixture 6 is provided with an air channel. The end of the sealing fixture 6 away from the thruster 4 can be fitted with the sealing surface 712 of the probe 71 of the brake caliper 7, and the air gap detector is connected to the oil inlet hole 711 located at the probe 71 through the air channel.

[0028] The above-mentioned automobile brake caliper sealing detection device includes a workbench 1, a pusher 4, a connecting element 5, a sealing fixture 6 and an air gap detector. When in use, after the brake caliper 7 is fixedly placed on the workbench 1, the pusher 4 pushes the connecting element 5 and the sealing fixture 6 forward, so that the sealing fixture 6 fits with the sealing surface 712 of the probe 71 on the brake caliper 7. At this time, the air channel is connected to the oil inlet hole 711 of the probe 71, and then the air gap detector is used to supply air to the oil inlet hole 711 through the air channel of the sealing fixture 6, so that the inside of the cylinder of the brake caliper 7 maintains a certain air pressure. After a certain period of time, the air pressure in the cylinder is detected by the air gap detector, and whether there is leakage is determined by the change in the air pressure to judge the sealing of the brake caliper 7. In this embodiment, the sealing fixture 6 is a hard structure. The sealing fixture 6 is fitted with the sealing surface 712 of the probe 71 to simulate the assembly state of the hard connection of the actual vehicle. The air gap detector can effectively detect product defects such as scratches, poor roughness, and poor flatness of the sealing surface 712.

[0029] like Figure 3 As shown, the sealing fixture 6 includes a sealing head 61, a sealing body 62 and a connecting section, the sealing body 62 is connected between the sealing head 61 and the connecting section, the connecting section is fixedly connected to the connecting element 5, the airway is opened in the sealing body 62, the sealing head 61 is provided with an air hole 611, and the airway is connected to the oil inlet 711 through the air hole 611. During implementation, the output end of the propeller 4 is connected to the connecting section through the connecting element 5, and the airway is opened in the sealing body 62 to avoid the airway opening in the connecting section affecting the rigidity of the connecting section and meet the connection of the air gap detector. The setting of the sealing head 61 can match the sealing surface 712 of the probe 71.

[0030] The sealing fixture 6 is made of beryllium bronze. Beryllium bronze has high hardness, is wear-resistant, and has a long service life. When used as the sealing fixture 6, it will not damage the inspected parts and can meet the inspection requirements. This avoids the problem that the traditional hard connection inspection will damage the sealing surface 712 of the parts and cannot implement non-destructive inspection in mass production.

[0031] The propeller 4 is a cylinder that can be connected to an external air source. By controlling the air intake and exhaust of the cylinder, the connecting element 5 and the sealing fixture 6 can be controlled to move forward or backward. It should be noted that other propellers 4 that can control the connecting element and the sealing fixture 6 to move forward or backward are applicable to this embodiment.

[0032] like Figure 1As shown, a fixing device 2 is provided on the top of the workbench 1, and a brake caliper 7 is installed on the fixing device 2. A support frame 3 is provided on the top of the workbench 1, and a pusher 4 is installed on the support frame 3. During implementation, the brake caliper 7 is fixedly placed on the fixing device 2 to prevent the brake caliper 7 from being pushed when the pusher 4 pushes the sealing jig 6 during the detection process, resulting in the sealing jig 6 and the sealing surface 712 not being able to fit tightly; the setting of the support frame 3 can lift the pusher 4 and the sealing jig 6 to ensure that the sealing jig 6 and the sealing surface 712 of the probe 71 can be accurately matched.

[0033] like Figure 1 As shown, the workbench 1 includes a first base plate 11 and a second base plate 12, and the fixing device 2 and the support frame 3 are respectively installed on the top of the first base plate 11 and the second base plate 12. When replacing the brake caliper 7 of different specifications and sizes for testing, the first base plate 11 can be replaced to replace the fixing device 2 to match the brake caliper 7, and the second base plate 12 can be replaced to replace the support frame 3 of different heights so that the sealing fixture 6 can match the sealing surface 712 of the brake caliper 7.

[0034] Embodiment 2

[0035] This embodiment is similar to the first embodiment, except that Figure 3 As shown, the sealing head 61 is provided with at least two air holes 611, and the air holes 611 are distributed along the circumference of the sealing head 61. In practice, blowing through the two air holes 611 can make the gas blown out from the sealing fixture 6 more uniform, the test result more stable, and the detection accuracy higher.

[0036] like Figure 3 As shown, the top of the sealing head 61 is provided with an annular groove 612, and the air hole 611 is connected with the oil inlet hole 711 through the groove 612. During implementation, after the sealing head 61 is attached to the sealing surface 712 of the probe 71, the groove 612 is located on the inner side of the sealing surface 712 and can be connected with the oil inlet hole 711. The gas blown out from the air hole 611 is dispersed along the groove 612 to the inner circumference of the sealing surface 712 of the probe 71, which can achieve balanced air intake and further improve the stability of the test results and the detection accuracy.

[0037] Specifically, the inner diameter of the air hole 611 is 4.2 mm, and the depth of the groove 612 is 1.0 mm. The air flow enters the groove 612 through the two air holes 611, ensuring that the air pressure is evenly distributed in the entire circumferential direction of the probe 71. When it is in contact with the sealing surface 712 of the brake caliper 7, the air pressure leakage at the position with abnormal flatness is larger than that at the normal position, so that products with abnormal flatness can be detected more accurately.

[0038] like Figure 3As shown, the air channel includes an air inlet 621, a collecting air channel 622 and a dispersed air channel 623. The air gap detector is connected to the air inlet 621. The two ends of the collecting air channel 622 are respectively connected to the air inlet 621 and the dispersed air channel 623. The air hole 611 is connected to the dispersed air channel 623. Specifically, when the dispersed air channel 623 is processed, a processing hole 624 is generated. A plug is set in the processing hole 624 to block it to prevent the sealing fixture 6 from leaking.

[0039] Embodiment 3

[0040] This embodiment is similar to the second embodiment, except that the connecting element 5 is an elastic connecting member. During implementation, the pusher 4 drives the sealing jig 6 forward. When there is a difference in the matching angle between the sealing jig 6 and the probe 71, when the sealing jig 6 partially contacts the sealing surface 712, the pusher 4 continues to push the sealing jig 6. At this time, the elastic connecting member can bend and stretch, driving the sealing jig 6 to swing, so that the sealing jig 6 fits the sealing surface 712. This embodiment can prevent low detection efficiency due to differences in matching angles, and has good adaptability and high versatility to the products being tested.

[0041] The elastic connector is a metal spring coupling. Several slits are provided in the middle of the metal spring coupling, so that a leaf spring is formed in the middle of the metal spring coupling, which allows eccentricity, deflection and end clearance, and the allowed eccentricity angle is 5°. The metal spring coupling is an ultra-hard aluminum alloy structure with extremely high torsional stiffness and low moment of inertia. When part of the end face of the sealing jig 6 first contacts the sealing surface 712, and the sealing jig 6 is continued to be pushed forward by the pusher 4, one side of the leaf spring is compressed, and the remaining end face of the sealing jig 6 can continue to move to contact the sealing surface 712.

[0042] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A vehicle brake caliper sealing detection device, comprising a workbench (1), a thruster (4), a connecting element (5) and a sealing fixture (6), wherein the thruster (4) and the brake caliper (7) are mounted on the workbench (1), and the output end of the thruster (4) is connected to one end of the sealing fixture (6) through the connecting element (5); characterized in that: The invention also comprises an air gap detector, wherein the sealing jig (6) is a hard structure, the sealing jig (6) is provided with an air passage, and the end of the sealing jig (6) away from the thruster (4) can be in contact with the sealing surface (712) of the probe (71) of the brake caliper (7), and the air gap detector is connected to the oil inlet hole (711) located at the probe (71) through the air passage.

2. The vehicle brake caliper sealing detection device according to claim 1, characterized in that: The sealing fixture (6) comprises a sealing head (61), a sealing body (62) and a connecting section, the sealing body (62) is connected between the sealing head (61) and the connecting section, the connecting section is fixedly connected to the connecting element (5), the air passage is opened in the sealing body (62), the sealing head (61) is provided with an air hole (611), and the air passage is connected with the oil inlet hole (711) through the air hole (611).

3. The vehicle brake caliper sealing detection device according to claim 2, characterized in that: The sealing head (61) is provided with at least two air holes (611), and the air holes (611) are distributed along the circumference of the sealing head (61).

4. The vehicle brake caliper sealing detection device according to claim 2, characterized in that: An annular groove (612) is provided on the top of the sealing head (61), and the air hole (611) is connected to the oil inlet hole (711) through the groove (612).

5. The sealing detection device for automobile brake caliper (7) according to claim 2, characterized in that: The air duct comprises an air inlet duct (621), a collecting air duct (622) and a dispersing air duct (623); the air gap detector is connected to the air inlet duct (621); two ends of the collecting air duct (622) are respectively connected to the air inlet duct (621) and the dispersing air duct (623); and the air hole (611) is connected to the dispersing air duct (623).

6. The vehicle brake caliper sealing detection device according to claim 1, characterized in that: The sealing fixture (6) is of a beryllium bronze structure.

7. The vehicle brake caliper sealing detection device according to claim 1, characterized in that: The connecting element (5) is an elastic connecting piece.

8. The vehicle brake caliper sealing detection device according to claim 7, characterized in that: The elastic connecting piece is a metal spring coupling.

9. The vehicle brake caliper sealing detection device according to any one of claims 1 to 8, characterized in that: A support frame (3) is provided on the top of the workbench (1), and the propeller (4) is mounted on the support frame (3).

10. The vehicle brake caliper sealing detection device according to any one of claims 1 to 8, characterized in that: A fixing device (2) is provided on the top of the workbench (1), and the brake caliper (7) is installed on the fixing device (2).

Images