Automobile brake pad wear detection device

Abstract

The utility model provides an automobile brake pad wear detection device. The brake disc, the shell, the two push-out assemblies and the two brake pads are installed on a vehicle, a hydraulic induction mechanism is fixedly installed on the outer wall of one side of the shell, and the hydraulic induction mechanism comprises a storage box, a hydraulic pipe, a sealing push block, a U-shaped rod, a supporting block, an installation box, a plurality of delay induction switches and a trigger switch; the storage box is fixedly installed on the outer wall of one side of the shell, and the hydraulic pipe is fixedly installed on the inner wall of one side of the storage box. According to the automobile brake pad wear detection device provided by the utility model, the hydraulic sensing mechanism is arranged, the switch is driven to trigger through the change of the oil quantity in the device, the device is not easily interfered by external factors, the stability is strong, the detection accuracy is improved through the time-delay sensing switch, and the controller is arranged to control the detection precision. And information of a plurality of brake pads can be collected, summarized and transmitted.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile detection, and particularly relates to an automobile brake pad wear detection device. Background Art

[0002] Automobile brake pads, also known as automobile brake leathers, refer to friction materials fixed on brake drums or brake discs that rotate with the wheels. The friction linings and friction blocks bear external pressure, generating friction to achieve the purpose of vehicle deceleration. During the use of brake pads, due to friction, the friction blocks will gradually wear out. The brake pads must be replaced in time after the friction material is used up, otherwise the steel plate and the brake disc will be in direct contact, and the braking effect will eventually be lost and the brake disc will be damaged, affecting driving safety. In the prior art, usually during the use of brake pads, drivers can only judge the degree of wear of the brake pads by whether the alarm iron sheet makes an abnormal sound, or by disassembling the brake drum for observation. These methods are labor-intensive and time-consuming. If they are not discovered in time, and braking is performed over long distances and under heavy loads, it will cause brake failure, resulting in traffic accidents caused by untimely replacement of brake pads.

[0003] After searching, in the related technology, the patent document with the authorization publication number CN113931945A discloses a vehicle brake pad wear thickness detection reminder device, including a friction pad device, a disassembly ring, a brake disc, and a brake caliper body. The brake caliper body is clamped with the side of the brake disc and locked by the disassembly ring. The friction pad device is embedded in the side of the brake caliper body; the friction pad device includes an early warning device, a back plate group, a buckle plate, a support plate, and a friction material layer; the early warning device includes a reaction cylinder device, a wire groove, an upper fixing sleeve, and an assembly set; the reaction cylinder device includes a connection tube, a temperature sensing module, an early warning bottom layer, and a loading cylinder. The present invention can make it possible to continuously warn the occupants of the vehicle by changing the temperature when the friction layer of the brake pad reaches the early warning thickness, and remind them to replace the brake pad in time, which is safer and more convenient.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the following defects exist: the monitoring and alarming method of observing temperature changes is easily interfered by external factors, resulting in inaccurate detection.

[0005] Therefore, it is necessary to provide a new automobile brake pad wear detection device to solve the above-mentioned technical problems. Utility Model Content

[0006] The technical problem solved by the utility model is to provide a vehicle brake pad wear detection device which, by setting a hydraulic sensing mechanism, drives the switch to be triggered by the change of the oil amount in the device, is not easily disturbed by external factors and has strong stability. By setting a delayed sensing switch, the detection accuracy is improved. By setting a controller, the information of multiple brake pads can be collected and summarized for transmission.

[0007] In order to solve the above technical problems, the automobile brake pad wear detection device provided by the utility model comprises: a brake disc installed on a vehicle, a shell, two ejection assemblies and two brake pads, a hydraulic sensing mechanism is fixedly installed on one side outer wall of the shell, and the hydraulic sensing mechanism comprises a storage box, a hydraulic pipe, a sealing push block, a U-shaped rod, a support block, an installation box, a plurality of delayed sensing switches and a trigger switch, the storage box is fixedly installed on one side outer wall of the shell, the hydraulic pipe is fixedly installed on one side inner wall of the storage box, the sealing push block is arranged in the hydraulic pipe, and the two sides of the hydraulic pipe are fixedly installed on the outer wall of the storage box. A through hole 1 is provided at each end, one end of the U-shaped rod passes through the through hole 1, extends into the hydraulic pipe and is fixedly connected to the sealing push block, the support block is fixedly installed on the bottom inner wall of the storage box, the installation box is fixedly installed on one side inner wall of the storage box, a through hole 2 is provided on the support block, a through hole 3 is provided on one side of the installation box, the other end of the U-shaped rod passes through the through hole 2 and the through hole 3 respectively and extends into the installation box, a plurality of time-delay sensing switches are fixedly installed in the installation box, and the trigger switch is fixedly installed on the other end of the U-shaped rod and is respectively adapted to the plurality of time-delay sensing switches.

[0008] As a further solution of the utility model, a compression oil bag is provided on the top of the brake pad, the top of the compression oil bag is fixedly connected to the shell, and the bottom of the compression oil bag is fixedly connected to the top of the brake pad.

[0009] As a further solution of the utility model, a through hole four is opened on the shell, a through hole five is opened on the outer wall of one side of the storage box, an oil pipe is fixedly installed on the compression oil bag, and the other end of the oil pipe passes through through hole four, through hole five and through hole one and extends into the hydraulic pipe.

[0010] As a further solution of the utility model, a controller is fixedly mounted on an outer wall of one side of the shell, and the controller is respectively connected to a plurality of time-delay induction switches.

[0011] As a further solution of the utility model, hydraulic oil is provided in both the hydraulic pipe and the compression oil bag.

[0012] As a further solution of the utility model, sealing rings are provided in the two through holes.

[0013] Compared with the related art, the automobile brake pad wear detection device provided by the utility model has the following beneficial effects:

[0014] 1. The utility model sets a hydraulic induction mechanism to trigger the switch by changing the amount of oil in the device, which is not easily disturbed by external factors and has strong stability;

[0015] 2. The utility model avoids false touches and improves detection accuracy by setting a delayed induction switch;

[0016] 3. The utility model can collect and aggregate the information of multiple brake pads for transmission by setting up a controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the utility model of the automobile brake pad wear detection device;

[0019] Figure 2 This is a schematic diagram of the disassembly of the brake part of the automobile brake pad wear detection device of the utility model;

[0020] Figure 3 The utility model is a cross-sectional schematic diagram of the hydraulic induction mechanism of the automobile brake pad wear detection device.

[0021] In the figure: 1. brake disc; 2. housing; 3. ejection assembly; 4. brake pad; 5. storage box; 6. hydraulic pipe; 7. sealing push block; 8. U-shaped rod; 9. support block; 10. installation box; 11. delay induction switch; 12. trigger switch; 13. compression oil bag; 14. oil pipeline; 15. controller. DETAILED DESCRIPTION

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 This is a three-dimensional structural diagram of the utility model of the automobile brake pad wear detection device; Figure 2 This is a schematic diagram of the disassembly of the brake part of the automobile brake pad wear detection device of the utility model; Figure 3The schematic cross-sectional view of the hydraulic sensing mechanism of the automobile brake pad wear detection device of the utility model. The automobile brake pad wear detection device comprises: a brake disc 1 installed on the vehicle, a housing 2, two ejection assemblies 3 and two brake pads 4. A hydraulic sensing mechanism is fixedly installed on the outer wall of one side of the housing 2. The hydraulic sensing mechanism comprises a storage box 5, a hydraulic pipe 6, a sealing push block 7, a U-shaped rod 8, a support block 9, an installation box 10, a plurality of delayed sensing switches 11 and a trigger switch 12. The storage box 5 is fixedly installed on the outer wall of one side of the housing 2. The hydraulic pipe 6 is fixedly installed on the inner wall of one side of the storage box 5. The sealing push block 7 is arranged in the hydraulic pipe 6. Both ends of the hydraulic pipe 6 are provided with through holes. One end of the U-shaped rod 8 passes through through hole 1, extends into the hydraulic pipe 6 and is fixedly connected to the sealing push block 7. The support block 9 is fixedly installed on the bottom inner wall of the storage box 5. The installation box 10 is fixedly installed on one side inner wall of the storage box 5. A through hole 2 is opened on the support block 9. A through hole 3 is opened on one side of the installation box 10. The other end of the U-shaped rod 8 passes through through hole 2 and through hole 3 respectively and extends into the installation box 10. Multiple delay sensing switches 11 are fixedly installed in the installation box 10. The trigger switch 12 is fixedly installed on the other end of the U-shaped rod 8 and is respectively adapted to the multiple delay sensing switches 11.

[0023] Through the mutual cooperation of the hydraulic pipe 6 and the U-shaped rod 8, the switch is triggered by the change of the oil amount in the device, which is not easily disturbed by external factors and has strong stability.

[0024] A compression oil bag 13 is provided on the top of the brake pad 4, the top of the compression oil bag 13 is fixedly connected to the housing 2, and the bottom of the compression oil bag 13 is fixedly connected to the top of the brake pad 4;

[0025] The housing 2 is provided with a through hole 4, the outer wall of one side of the storage box 5 is provided with a through hole 5, the compression oil bag 13 is fixedly mounted with an oil delivery pipe 14, and the other end of the oil delivery pipe 14 passes through the through hole 4, the through hole 5 and the through hole 1 and extends to the hydraulic pipe 6;

[0026] A controller 15 is fixedly mounted on one side outer wall of the housing 2, and the controller 15 is respectively connected to a plurality of delay induction switches 11;

[0027] Through the cooperation between the time-delay sensing switch 11 and the controller 15, by setting the time-delay sensing switch 11, false touches can be avoided, the detection accuracy can be improved, and the information of multiple brake pads can be collected and summarized for transmission.

[0028] Hydraulic oil is provided in the hydraulic pipe 6 and the compression oil bag 13;

[0029] The two through holes are both provided with sealing rings.

[0030] The working principle of the automobile brake pad wear detection device provided by the utility model is as follows:

[0031] The first step: when the device is in use, when the vehicle brakes, the brake pad 4 is pushed out by the pushing component 3, driving the compressed oil bag 13 to expand and extract the hydraulic oil in the hydraulic pipe 6 through the oil pipe 14, so that the U-shaped rod 8 drives the trigger switch 12 to approach the delay sensing switch 11. When the brake is released, the brake pad 4 retracts and squeezes the compressed oil bag 13 together with the shell 2, squeezing the hydraulic oil therein back into the hydraulic pipe 6, so that the U-shaped rod 8 drives the trigger switch 12 away from the delay sensing switch 11. As the brake pad 4 is used, the thickness of the brake pad 4 becomes thinner and thinner, and more and more hydraulic oil is extracted from the hydraulic pipe 6 during braking, until the trigger switch 12 triggers the delay sensing switch 11, reminding the driver to replace the brake pad 4.

[0032] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0033] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0034] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A vehicle brake pad wear detection device, characterized in that: include: A brake disc, a housing, two ejection assemblies and two brake pads installed on a vehicle, a hydraulic sensing mechanism fixedly installed on one outer wall of the housing, the hydraulic sensing mechanism comprising a storage box, a hydraulic pipe, a sealing push block, a U-shaped rod, a support block, an installation box, a plurality of time-delay sensing switches and a trigger switch, the storage box fixedly installed on one outer wall of the housing, the hydraulic pipe fixedly installed on one inner wall of the storage box, the sealing push block is arranged in the hydraulic pipe, both ends of the hydraulic pipe are provided with a through hole one, one end of the U-shaped rod extends into the hydraulic pipe through the through hole one and is fixedly connected with the sealing push block, the support block is fixedly installed on the bottom inner wall of the storage box, the installation box is fixedly installed on one inner wall of the storage box, the support block is provided with a through hole two, one side of the installation box is provided with a through hole three, the other end of the U-shaped rod respectively passes through the through hole two and the through hole three and extends into the installation box, a plurality of time-delay sensing switches are fixedly installed in the installation box, and the trigger switch is fixedly installed on the other end of the U-shaped rod and is respectively adapted to the plurality of time-delay sensing switches.

2. The vehicle brake pad wear detection device according to claim 1, characterized in that: A compression oil bag is arranged on the top of the brake pad, the top of the compression oil bag is fixedly connected to the shell, and the bottom of the compression oil bag is fixedly connected to the top of the brake pad.

3. The vehicle brake pad wear detection device according to claim 2, characterized in that: A through hole four is provided on the shell, a through hole five is provided on one side outer wall of the storage box, an oil pipeline is fixedly installed on the compression oil bag, and the other end of the oil pipeline passes through through hole four, through hole five and through hole one and extends into the hydraulic pipe.

4. The vehicle brake pad wear detection device according to claim 2, characterized in that: A controller is fixedly mounted on one side outer wall of the shell, and the controller is respectively connected with a plurality of time-delay induction switches.

5. The vehicle brake pad wear detection device according to claim 2, characterized in that: Hydraulic oil is provided in the hydraulic pipe and the compression oil bag.

6. The vehicle brake pad wear detection device according to claim 1, characterized in that: The two through holes are both provided with sealing rings.

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