Brake pad wear detection assembly

Abstract

The utility model provides a brake pad wear detection assembly, which relates to the technical field of sensors, and comprises a brake pad, a first through hole, a second through hole, a first detection module and a second detection module, the back plate is provided with a second through hole; the wear sensor comprises a first main body and a second main body which are connected, and the first main body can penetrate through the second through hole and extend into the first through hole; a bump is arranged on the first main body; the connecting pipe and the second through hole are coaxially arranged, the left end of the connecting pipe is connected with the right side of the back plate, a guide groove and a clamping groove are formed in the inner wall of the connecting pipe, and the protruding block can be in sliding connection with the guide groove and the clamping groove; the right end of the guide groove extends to the right end face of the connecting pipe, one end of the clamping groove is perpendicular to and communicated with the left end of the guide groove, and the other end of the clamping groove extends in the circumferential direction of the connecting pipe. The elastic piece is arranged in the clamping groove and used for making contact with the left side of the protruding block and making the right side of the protruding block abut against the clamping groove. According to the invention, the first main body and the wear sensor can be conveniently installed.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a brake pad wear detection component. Background Art

[0002] The car's brake pads are installed on the back plate. During braking, the friction between the brake pads and the brake disc causes the friction pads to gradually wear out, and this wear is detected by the wear sensor; when the brake pads are worn to a certain thickness, the head of the wear sensor will be exposed and contact the brake disc, generating a specific electrical signal. These electrical signals will be detected by the car's electronic control unit (ECU), and the driver will be notified through the warning light on the dashboard that the brake pads need to be replaced.

[0003] Currently, the wear sensor and the back plate are often fastened together with screws. When disassembling the wear sensor, tools are needed to tighten each screw, which is not very convenient. Utility Model Content

[0004] In response to the above situation, the utility model provides a brake pad wear detection assembly, which aims to solve the technical problem that the existing wear sensor and back plate are often fastened together with screws. When disassembling and assembling the wear sensor, tools are needed to tighten each screw, which is not very convenient to operate.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model provides a brake pad wear detection component, comprising:

[0007] A brake pad is installed on the left side of the back plate and has a first through hole;

[0008] a back plate having a second through hole, wherein the first through hole and the second through hole are coaxial and connected;

[0009] The wear sensor comprises a first body and a second body connected to each other, wherein the first body can pass through the second through hole and extend into the first through hole; and the first body has a protrusion;

[0010] A connecting tube is coaxially arranged with the second through hole, the left end of the connecting tube is connected to the right side of the back plate, a guide groove and a clamping groove are formed on the inner wall of the connecting tube, and the protrusion can be slidably connected with the guide groove and the clamping groove; the right end of the guide groove extends to the right end surface of the connecting tube, one end of the clamping groove is perpendicular to and connected to the left end of the guide groove, and the other end extends along the circumferential direction of the connecting tube;

[0011] The elastic member is arranged in the card slot and is used for contacting the left side of the protrusion and making the right side of the protrusion abut against the card slot.

[0012] In some embodiments of the present invention, the plurality of protrusions are arranged at intervals along the circumference of the first body.

[0013] In some embodiments of the present invention, the left end of the connecting pipe is detachably connected to a ring-shaped end cover, which is connected to the back plate; the inner diameter of the ring-shaped end cover is equal to the inner diameter of the connecting pipe; and the ring-shaped end cover is in contact with the elastic member.

[0014] In some embodiments of the present invention, a right extension pipe is provided on the right side of the annular end cover, a left end of the connecting pipe has an annular first connecting groove, and the right extension pipe is threadedly connected to the first connecting groove.

[0015] In some embodiments of the present invention, the annular end cover is detachably connected to the back plate.

[0016] In some embodiments of the present invention, a left extension tube is provided on the left side of the annular end cover, and an annular second connecting groove is provided on the right side of the back plate, and the left extension tube is threadedly connected to the second connecting groove.

[0017] In some embodiments of the present invention, the elastic member is in the shape of an arc-shaped sheet, and has extensions at both ends of the elastic member, which are plugged into the connecting pipe.

[0018] In some embodiments of the present invention, a push plate is connected to the card slot in a transverse sliding manner, and the push plate is located on the right side of the elastic member.

[0019] The embodiments of the present invention have at least the following advantages or beneficial effects:

[0020] When installing the wear sensor, first connect the back plate and the connecting pipe, then move the first body to the left by hand so that the protrusion enters the left end of the guide groove and squeezes the elastic part, then rotate the first body so that the protrusion enters the slot, release the first body by hand, and the elastic part pushes the protrusion to the right so that the right side of the protrusion abuts against the slot, and utilizes the friction between the right side of the protrusion and the slot to limit the rotation of the first body, while limiting the left and right movement of the first body through the slot, thereby conveniently realizing the installation of the first body and the wear sensor.

[0021] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the brake pad wear detection component;

[0024] Figure 2 Schematic diagram of the structure of the connecting pipe;

[0025] Figure 3 for Figure 2 A partial enlarged view of position A in the middle;

[0026] Figure 4 Schematic diagram of the wear sensor structure.

[0027] icon:

[0028] 1-brake pad, 11-first through hole,

[0029] 2-back plate, 21-second through hole, 22-second connecting groove,

[0030] 3-wear sensor, 31-first body, 32-second body, 33-bump,

[0031] 4-connecting pipe, 41-guide groove, 42-cage groove, 43-first connecting groove,

[0032] 5-elastic member, 51-extension portion,

[0033] 6-annular end cap, 61-right extension pipe, 62-left extension pipe,

[0034] 7-Push plate. DETAILED DESCRIPTION

[0035] In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention.

[0036] In the embodiments of the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0037] The embodiments of the present utility model are described in detail below.

[0038] Example

[0039] See also Figures 1 to 4 This embodiment provides a brake pad 1 wear detection assembly, including a brake pad 1, a back plate 2, a wear sensor 3, a connecting tube 4 and an elastic member 5.

[0040] The brake pad 1 is mounted on the left side of the back plate 2 , and has a first through hole 11 .

[0041] The back plate 2 has a second through hole 21 , and the first through hole 11 and the second through hole 21 are coaxial and connected.

[0042] The wear sensor 3 includes a first body 31 and a second body 32 connected to each other. The first body 31 can pass through the second through hole 21 and extend into the first through hole 11. The first body 31 has a protrusion 33. The diameter of the second body 32 is larger than that of the first body 31.

[0043] The connecting tube 4 is coaxially arranged with the second through hole 21, and the left end of the connecting tube 4 is connected to the right side of the back plate 2. A guide groove 41 and a clamping groove 42 are provided on the inner wall of the connecting tube 4, and the protrusion 33 can be slidably connected with the guide groove 41 and the clamping groove 42; the right end of the guide groove 41 extends to the right end face of the connecting tube 4, one end of the clamping groove 42 is perpendicular to and connected with the left end of the guide groove 41, and the other end extends along the circumferential direction of the connecting tube 4, so that the protrusion 33 can enter the left end of the guide groove 41 from right to left, and after rotating the first main body 31, the protrusion 33 can slide into the clamping groove 42.

[0044] The elastic member 5 is disposed in the slot 42 , and is configured to contact the left side of the protrusion 33 and enable the right side of the protrusion 33 to abut against the slot 42 .

[0045] When installing the wear sensor 3, first connect the back plate 2 and the connecting tube 4. Then manually move the first body 31 to the left, so that the protrusion 33 enters the left end of the guide groove 41 and squeezes the elastic member 5. Then, rotate the first body 31 so that the protrusion 33 enters the retaining groove 42. Release the first body 31, and the elastic member 5 pushes the protrusion 33 to the right, so that the right side of the protrusion 33 abuts the retaining groove 42. The friction between the right side of the protrusion 33 and the retaining groove 42 limits the rotation of the first body 31. At the same time, the retaining groove 42 limits the left and right movement of the first body 31, thereby conveniently completing the installation of the first body 31 and the wear sensor 3. After the wear sensor 3 is installed, the left end of the first body 31 is located in the first through hole 11 on the brake pad 1. When the left side of the brake pad 1 is worn to a certain extent, the brake disc contacts the first body 31 during braking, thereby triggering an alarm.

[0046] In order to improve the stability of the connection between the connecting pipe 4 and the first body 31, there are multiple protrusions 33, and the multiple protrusions 33 are arranged at intervals along the circumference of the first body 31. Correspondingly, there are also multiple guide grooves 41 and card grooves 42, and the multiple guide grooves 41 and card grooves 42 are arranged at intervals along the circumference of the connecting pipe 4.

[0047] The left end of the connecting pipe 4 is detachably connected to a circular end cap 6, which is connected to the back plate 2. The inner diameter of the circular end cap 6 is equal to the inner diameter of the connecting pipe 4; the circular end cap 6 is in contact with the elastic member 5, and the right side of the circular end cap 6 serves as the left inner wall of the slot 42. Figure 2 When the elastic member 5 needs to be replaced, first separate the annular end cover 6 and the connecting pipe 4, and then put the elastic member 5 into the card slot 42 from left to right, or take out the elastic member 5 from right to left.

[0048] The left end of the connecting pipe 4 is detachably connected to the annular end cover 6 in the following manner: the right side of the annular end cover 6 has a right extension pipe 61 , the left end of the connecting pipe 4 has an annular first connecting groove 43 , and the right extension pipe 61 is threadedly connected to the first connecting groove 43 .

[0049] In this embodiment, the annular end cap 6 is detachably connected to the back plate 2. Specifically, the left side of the annular end cap 6 has a left extension tube 62, and the right side of the back plate 2 has an annular second connecting groove 22, with the left extension tube 62 being threadedly connected to the second connecting groove 22. When removing and installing the elastic member 5, the annular end cap 6 can be manually twisted to remove the connecting tube 4 and the annular end cap 6 from the back plate 2. The connecting tube 4 and the annular end cap 6 are then separated. After removing and placing the elastic member 5, the connecting tube 4 and the annular end cap 6 are reconnected, and the annular end cap 6 is then connected to the back plate 2 to reinstall the connecting tube 4. In this way, the elastic member 5 is less likely to fall off the left end of the connecting tube 4 during the process of reinstalling the connecting tube 4 after removing and installing the elastic member 5.

[0050] In this embodiment, the elastic member 5 is in the form of an arc-shaped sheet, with extensions 51 at both ends of the elastic member 5. The extensions 51 are plugged into the connecting tube 4. When the elastic member 5 is subjected to leftward pressure, its ends extend outward. When the pressure is released, the elastic member 5 applies a rightward force to the protrusion 33, causing it to abut against the slot 42. In other embodiments, the elastic member 5 may be a spring.

[0051] In order to better enable the arc-shaped sheet-like elastic member 5 to apply rightward thrust to the protrusion 33 , a push plate 7 is laterally slidably connected in the slot 42 , and the push plate 7 is located on the right side of the elastic member 5 .

[0052] Sealing rings are provided between the annular end cover 6 and the back plate 2 , between the annular end cover 6 and the connecting pipe 4 , and between the connecting pipe 4 and the second body 32 to achieve waterproof and dustproof effects.

[0053] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will appreciate that the present invention is susceptible to various modifications and variations. The embodiments and features of the embodiments of this application may be combined arbitrarily without conflict. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A brake pad wear detection component, characterized in that: include: A brake pad is installed on the left side of the back plate, and has a first through hole; a back plate having a second through hole, wherein the first through hole and the second through hole are coaxial and connected; The wear sensor comprises a first body and a second body connected to each other, wherein the first body can pass through the second through hole and extend into the first through hole; and the first body has a protrusion; A connecting tube is coaxially arranged with the second through hole, the left end of the connecting tube is connected to the right side of the back plate, a guide groove and a clamping groove are formed on the inner wall of the connecting tube, and the protrusion can be slidably connected with the guide groove and the clamping groove; the right end of the guide groove extends to the right end surface of the connecting tube, one end of the clamping groove is perpendicular to and connected to the left end of the guide groove, and the other end extends along the circumferential direction of the connecting tube; An elastic member is arranged in the slot and is used for contacting the left side of the protrusion and making the right side of the protrusion abut against the slot.

2. The brake pad wear detection assembly according to claim 1, characterized in that: The plurality of protrusions are arranged at intervals along the circumference of the first body.

3. The brake pad wear detection assembly according to claim 1, characterized in that: The left end of the connecting pipe is detachably connected to a ring-shaped end cover, which is connected to the back plate; the inner diameter of the ring-shaped end cover is equal to the inner diameter of the connecting pipe; and the ring-shaped end cover is in contact with the elastic member.

4. The brake pad wear detection assembly according to claim 3, characterized in that: The right side of the annular end cover is provided with a right extension pipe, the left end of the connecting pipe is provided with an annular first connecting groove, and the right extension pipe is threadedly connected to the first connecting groove.

5. The brake pad wear detection assembly according to claim 3, characterized in that: The annular end cover is detachably connected to the back plate.

6. The brake pad wear detection assembly according to claim 5, characterized in that: The left side of the annular end cover is provided with a left extension tube, the right side of the back plate is provided with an annular second connecting groove, and the left extension tube is threadedly connected to the second connecting groove.

7. The brake pad wear detection assembly according to claim 3, characterized in that: The elastic member is in the shape of an arc-shaped sheet. Both ends of the elastic member are provided with extension parts, and the extension parts are plugged into the connecting pipe.

8. The brake pad wear detection assembly according to claim 7, characterized in that: A push plate is connected to the card slot in a transverse sliding manner, and the push plate is located on the right side of the elastic member.

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