An adjustable brake pad wear warning wire harness assembly

Abstract

The present invention discloses an adjustable brake pad wear alarm wire harness assembly, which includes a brake pad friction block and a brake pad back plate with pin holes, a wire harness plug, and a copper wire. An insulating guide pin is inserted on the outer side of the other end of the copper wire, and a locking ring is integrally formed on the outer side of the rear end of the insulating guide pin. A group of strip-shaped limit keys are fixed on the bottom surface of the locking ring, and a group of jacks are also provided on the locking ring. Three strip-shaped key grooves matching the strip-shaped limit keys are also provided on the brake pad back plate, and the depths of the three strip-shaped key grooves are different. The maximum value of the depth of the strip-shaped key groove is equivalent to the thickness of the strip-shaped limit key. Three threaded holes corresponding to the jacks are also provided on the brake pad back plate, and when the strip-shaped limit key is inserted into a certain group of strip-shaped key grooves, the jacks can exactly coincide with the centers of the corresponding threaded holes. The present invention solves the problem that the brake pad connection end of the current brake pad wear alarm induction electronic wire harness is not convenient to adjust the wear limit value of the brake pad according to the needs of users.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive brake pads, and specifically relates to an adjustable brake pad wear alarm wire harness assembly. Background Art

[0002] In the braking system of an automobile, the brake pads are the most critical safety components. The quality of all braking effects is determined by the brake pads. An alarm is installed on the brake pads. When the friction block between the vehicle brake disc and the brake pads wears and touches the alarm wire, the braking system will accurately give an alarm prompt. This solves the problem that usually, after the brake pads wear, the brake fluid level drops, and the handbrake light will only stay on constantly (it also stays on after releasing the handbrake) when it drops to a certain position to prompt maintenance or replacement of the brake pads. The use of this device has greatly improved the timeliness of information transmission and enhanced the driving comfort and safe driving performance of the whole vehicle.

[0003] For the brake pad connection end of the existing brake pad wear alarm induction electronic wire harness, it is generally directly fixed in the installation groove of the brake pad by screws or other locking parts. Such a fixed installation structure makes the wear thickness value of the brake pad a fixed value, and it is not convenient to adjust the wear limit value of the brake pad according to the user's needs, resulting in certain limitations in use. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides an adjustable brake pad wear alarm wire harness assembly, which solves the problem that the brake pad connection end of the current brake pad wear alarm induction electronic wire harness adopts a fixed installation structure, making the wear thickness value of the brake pad a fixed value and not being convenient to adjust the wear limit value of the brake pad according to the user's needs.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the present invention provides the following technical solution: An adjustable brake pad wear alarm wire harness assembly, including a brake pad friction block and a brake pad back plate with pin holes, a wire harness plug, and a copper wire. The brake pad back plate is fixedly arranged at the rear end of the friction block. The copper wire is bent into two bundles, and the two wiring ends of the wire harness plug are respectively connected to the free ends of the two bundles after bending. The other end of the copper wire is inserted with an insulating guide pin on the outside. A set of guide holes is provided inside the insulating guide pin. The two ends of the copper wire after bending are respectively inserted into a guide hole, so that the continuous end of the copper wire is placed at the front end of the guide hole. A locking ring is integrally formed on the outside of the rear end of the insulating guide pin. After the insulating guide pin is inserted into the pin hole, the locking ring is closely attached to the back surface of the brake pad back plate. A set of strip-shaped limit keys is fixed on the bottom surface of the locking ring, and the two strip-shaped limit keys in this set are located on the same straight line. A set of jacks is also provided on the locking ring, and the two jacks in this set are located on the same straight line. Three sets of strip-shaped key grooves matching the strip-shaped limit keys are also provided on the brake pad back plate, and the depths of the three sets of strip-shaped key grooves are different. The maximum depth of the strip-shaped key groove is equivalent to the thickness of the strip-shaped limit key. Three sets of threaded holes corresponding to the jacks are also provided on the brake pad back plate. When the strip-shaped limit key is inserted into a certain set of strip-shaped key grooves, the jack can just coincide with the center of the corresponding threaded hole.

[0008] Preferably, an insulating sleeve is wrapped outside the exposed part of the copper wire between the wire harness plug and the insulating guide pin.

[0009] Preferably, anti-drop protection sleeves are closely fitted at the joints of the insulating sleeve with the wire harness plug and the insulating guide pin respectively at both ends.

[0010] Preferably, the straight line formed by connecting the two jacks is perpendicular to the straight line formed by connecting the two strip-shaped limit keys, and the included angle between adjacent two sets of strip-shaped key grooves is 60°.

[0011] Preferably, the difference in depth between adjacent two sets of strip-shaped key grooves is 1 mm.

[0012] Preferably, an observation port is also provided on the side wall of the insulating guide pin.

[0013] Preferably, an anti-loosening rubber pad is also bonded around the bottom surface of the locking ring.

[0014] (III) Beneficial effects

[0015] The present invention provides an adjustable brake pad wear alarm wire harness assembly, which has the following beneficial effects:

[0016] The present invention improves the structure of the brake pad connection end of the traditional brake pad wear alarm induction electronic wire harness, and designs it into a structural form that is convenient to adjust the detected brake pad wear limit value according to the needs of users, so as to meet the needs of different users. Specifically, an insulating guide pin of the continuous end of the inserted copper wire can be set, and a locking ring with a set of strip-shaped limiting keys is arranged at the outer end of the insulating guide pin. Then, three corresponding strip-shaped key grooves are opened on the brake pad back plate, and it is ensured that the depths of the three strip-shaped key grooves are different. At the same time, the maximum value of the depth of the strip-shaped key groove is equivalent to the thickness of the strip-shaped limiting key. When the user needs to adjust the detected wear limit value, the locking ring can be rotated to make the strip-shaped limiting key insert into the strip-shaped key grooves with different depths, so that the continuous end of the copper wire is at different depth positions of the pin holes on the friction block. Therefore, different limit thickness values of the wear of the friction block can be detected. Finally, since the jack can exactly coincide with the center of the corresponding threaded hole after the strip-shaped limiting key is inserted into a certain group of strip-shaped key grooves, every time the strip-shaped limiting key is inserted into different strip-shaped key grooves, the locking screw can be inserted into the jack and then exactly locked in the corresponding threaded hole, thereby realizing the position locking of the brake pad connection end of the electronic wire harness.

[0017] In order to ensure that when the strip-shaped limiting key is inserted into the strip-shaped key grooves with different depths, and after the locking screw is tightened by screwing, the locking ring can always be kept close to the back surface of the brake pad back plate to avoid loosening problems, an anti-loosening rubber pad is also bonded around the bottom surface of the locking ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a partial cross-sectional view of the alarm wire harness of the present invention connected to the brake pad;

[0020] Figure 3 is a top view structural diagram of the connection between the brake pad back plate and the locking ring of the present invention;

[0021] Figure 4 is a top view structural diagram of the brake pad back plate of the present invention;

[0022] Figure 5 is a bottom view structural diagram of the locking ring of the present invention.

[0023] In the figure: wire harness plug 1, copper wire 2, insulating sleeve 3, locking ring 4, insulating guide pin 5, observation port 6, anti-drop protection sleeve 7, pin hole 8, brake pad friction block 9, brake pad back plate 10, strip-shaped key groove 11, threaded hole 12, locking screw 13, strip-shaped limiting key 14, anti-loosening rubber pad 15, jack 16, guide hole 17, continuous end 18. DETAILED DESCRIPTION OF THE INVENTION

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] An adjustable brake pad wear alarm wire harness assembly includes a brake pad friction block 9 with a pin hole 8, a brake pad back plate 10, a wire harness plug 1, and a copper wire 2. The brake pad back plate 10 is fixedly arranged at the rear end of the friction block 9. The copper wire 2 is bent into two bundles, and the two wiring ends of the wire harness plug 1 are respectively connected to the free ends of the two bent bundles. The other end of the copper wire 2 is externally inserted with an insulating guide pin 5. A set of guide holes 17 are opened inside the insulating guide pin 5. The two ends of the bent copper wire 2 are respectively inserted into a guide hole 17, so that the continuous end 18 of the copper wire 2 is placed at the front end of the guide hole 17.

[0026] When using such an alarm wire harness assembly, the distance that the continuous end 18 of the copper wire 2 extends out of the brake pad back plate 10 is 1 - 4 mm, which means that when the friction block can be worn to the remaining 1 - 4 mm, the brake system friction disc contacts the continuous end 18. When the wire harness is worn out, the circuit generates an open circuit signal. The wire harness plug 1 is connected with an open circuit device to transmit the signal to the buzzer in the cab, turn on the alarm audio device and the dashboard display light, and generate a buzzer sound and a flashing signal light. Since the alarm principle part of the brake pad wear alarm wire harness is an existing technical means, it will not be described in detail here.

[0027] A locking ring 4 is integrally formed on the outer side of the rear end of the insulating guide pin 5. After the insulating guide pin 5 is inserted into the pin hole 8, the locking ring 4 is close to the back surface of the brake pad back plate 10. A set of strip-shaped limiting keys 14 are fixed on the bottom surface of the locking ring 4, and the two strip-shaped limiting keys 14 in this set are located on the same straight line. A set of jacks 16 are also opened on the locking ring 4, and the two jacks 16 in this set are located on the same straight line. Three sets of strip-shaped key grooves 11 matching the strip-shaped limiting keys 14 are opened on the brake pad back plate 10, and the depths of the three sets of strip-shaped key grooves 11 are different. The maximum depth of the strip-shaped key grooves 11 is equivalent to the thickness of the strip-shaped limiting keys 14. For example, the depth difference between two adjacent sets of strip-shaped key grooves 11 can be set to 1 mm. Three sets of threaded holes 12 corresponding to the jacks 16 are also opened on the brake pad back plate 10. After the strip-shaped limiting keys 14 are inserted into a certain set of strip-shaped key grooves 11, the jacks 16 can just coincide with the centers of the corresponding threaded holes 12.

[0028] By structurally improving the brake pad connection end of the traditional brake pad wear alarm induction electronic wire harness and designing it into a structural form that facilitates adjusting the detected brake pad wear limit value according to user needs, so as to adapt to the needs of different users. Specifically, an insulating guide pin 5 can be set at the continuous end 18 of the inserted copper wire 2, and a locking ring 4 with a set of strip-shaped limit keys 14 is set at the outer end of the insulating guide pin 5. Then, three corresponding strip-shaped key grooves 11 are opened on the brake pad back plate 10, and it is ensured that the depths of the three strip-shaped key grooves 11 are different. At the same time, the maximum depth of the strip-shaped key groove 11 is equivalent to the thickness of the strip-shaped limit key 14. When the user needs to adjust the detected wear limit value, the locking ring 4 can be rotated to make the strip-shaped limit key 14 inserted into the strip-shaped key grooves 11 with different depths, so that the continuous end 18 of the copper wire 2 is at different depth positions of the pin holes 8 on the friction block 9. Therefore, different limit thickness values of the wear of the friction block 9 can be detected. Finally, since the jack 16 can exactly coincide with the center of the corresponding threaded hole 12 after the strip-shaped limit key 14 is inserted into a certain group of strip-shaped key grooves 11, after the strip-shaped limit key 14 is inserted into different strip-shaped key grooves 11 each time, the locking screw 13 can be inserted into the jack 16 and exactly locked in the corresponding threaded hole 12, thereby realizing the position locking of the brake pad connection end of the electronic wire harness;

[0029] In addition, the straight line formed by connecting the two jacks 16 and the straight line formed by connecting the two strip-shaped limit keys 14 are set to be perpendicular to each other, and the included angle between adjacent two groups of strip-shaped key grooves 11 is set to 60°, which can ensure that each part of the locking ring 4 is evenly stressed after locking, enhancing the stability of the connection.

[0030] To avoid short circuit and signal failure problems, the exposed part of the copper wire 2 between the wire harness plug 1 and the insulating guide pin 5 is wrapped with an insulating sleeve 3, and anti-drop protection sleeves 7 are tightly fitted at the joints of the insulating sleeve 3 with the wire harness plug 1 and the insulating guide pin 5 respectively at both ends.

[0031] To facilitate observing the copper wire connection situation inside the insulating guide pin 5, an observation port 6 is also opened on the side wall of the insulating guide pin 5.

[0032] To ensure that when the strip-shaped limit key 14 is inserted into the strip-shaped key grooves 11 with different depths, after the locking screw 13 is screwed and locked, the locking ring 4 can always be ensured to be closely attached to the back surface of the brake pad back plate 10 to avoid loosening problems, an anti-loosening rubber pad 15 is also bonded around the bottom surface of the locking ring 4.

[0033] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable brake pad wear warning wire harness assembly, comprising a brake pad friction block (9) with a pin hole (8) formed therein, a brake pad back plate (10), a wire harness plug (1), and a copper wire (2). The brake pad back plate (10) is fixedly arranged at the rear end of the friction block (9). The copper wire (2) is bent into two bundles, and the two wiring ends of the wire harness plug (1) are respectively connected to the free ends of the two bundles after bending. It is characterized in that: On the outer side of the other end of the copper wire (2), an insulating guide pin (5) is inserted. A set of guide holes (17) are formed inside the insulating guide pin (5). After the copper wire (2) is bent, both ends are respectively inserted into one guide hole (17), so that the continuous end (18) of the copper wire (2) is placed at the front end of the guide hole (17). On the outer side of the rear end of the insulating guide pin (5), a locking ring (4) is integrally formed. After the insulating guide pin (5) is inserted into the pin hole (8), the locking ring (4) closely adheres to the back surface of the brake pad back plate (10). A set of strip-shaped limiting keys (14) are fixed on the bottom surface of the locking ring (4), and the two strip-shaped limiting keys (14) in this set are located on the same straight line. A set of jacks (16) are also formed on the locking ring (4), and the two jacks (16) in this set are located on the same straight line. Three sets of strip-shaped key grooves (11) matching the strip-shaped limiting keys (14) are formed on the brake pad back plate (10), and the depths of the three sets of strip-shaped key grooves (11) are different. The maximum depth of the strip-shaped key groove (11) is equivalent to the thickness of the strip-shaped limiting key (14). Three sets of threaded holes (12) corresponding to the jacks (16) are formed on the brake pad back plate (10). When the strip-shaped limiting key (14) is inserted into a certain set of strip-shaped key grooves (11), the jack (16) can exactly coincide with the center of the corresponding threaded hole (12). When the user needs to adjust the detected wear limit value, the locking ring can be rotated to make the strip-shaped limiting key insert into the strip-shaped key grooves with different depths, so that the continuous end of the copper wire is at different depth positions of the pin hole on the friction block. Therefore, different limit thickness values of the wear of the friction block can be detected; Wherein, an insulating sleeve (3) is wrapped on the outer side of the exposed part of the copper wire (2) between the wire harness plug (1) and the insulating guide pin (5); Wherein, the straight line formed by connecting the two jacks (16) is perpendicular to the straight line formed by connecting the two strip-shaped limiting keys (14), and the included angle between adjacent two sets of strip-shaped key grooves (11) is 60°.

2. The adjustable brake pad wear warning wire harness assembly according to claim 1, characterized in that: Anti-drop protection sleeves (7) are closely fitted at the joints of the insulating sleeve (3) and the wire harness plug (1) and the insulating guide pin (5) respectively at both ends.

3. An adjustable brake pad wear warning wire harness assembly according to any one of claims 1-2, characterized in that: The difference in depth between adjacent two sets of strip-shaped key grooves (11) is 1 mm.

4. An adjustable brake pad wear warning wire harness assembly according to any one of claims 1-2, characterized in that: An observation port (6) is also formed on the side wall of the insulating guide pin (5).

5. An adjustable brake pad wear warning wire harness assembly according to any one of claims 1-2, characterized in that: Anti-loosening rubber pads (15) are also bonded around the bottom surface of the locking ring (4).

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