An EPB caliper wire harness assembly

Abstract

The application relates to the technical field of EPB caliper wire technology, and provides an EPB caliper wire harness assembly, which comprises a caliper body and a wire harness assembly, a protruding seat is arranged at the back of the caliper body, an assembly hole is arranged in the protruding seat, the wire harness assembly comprises an EPB sensing wire, a protection structure and an automatic locking structure, the protection structure comprises a buffer seat arranged on the protruding seat and an energy release section arranged on the EPB sensing wire, the automatic locking structure comprises a first locking seat arranged on the protruding seat and a second locking seat arranged on the EPB sensing wire, the second locking seat is self-locked in the first locking seat, a first locking point is formed on the EPB sensing wire, the absolute stability of the wire harness on the caliper body is ensured, additional locking operation steps are avoided, the assembly efficiency is greatly improved, and the impact resistance and the overall service life of the EPB sensing wire in a harsh environment are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of EPB caliper wire technology, and particularly to an EPB caliper wire harness assembly. Background Technology

[0002] Electronic parking brake (EPB) systems are widely used in the automotive industry due to their convenience and safety. As the core actuator of the EPB system, the EPB caliper is typically equipped with a sensor harness (EPB sensor wire) connecting the caliper motor to an external control unit for signal transmission and status feedback. This harness must be reliably fixed to the caliper body; its assembly efficiency, connection stability, and protection against harsh working environments (such as impacts from flying stones and vibrations) directly affect the stability and lifespan of the system.

[0003] In existing technologies, EPB caliper harnesses are often fixed using a single fixing point or a simple combination of wire holes and cable ties, which have the following obvious shortcomings: First, the assembly process is cumbersome, the locking force is insufficient and it relies on the precision of manual operation, making it difficult to achieve efficient and reliable instant locking; Second, there is often an exposed section of the harness between the caliper and the motor terminal connection point, which lacks effective buffer protection. When the vehicle is driving on complex road conditions, this exposed section is easily subjected to severe impacts from external foreign objects (such as flying stones), causing the harness to be subjected to huge tensile forces instantly, which can lead to wire core breakage or connection failure. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides an EPB caliper wiring harness assembly, comprising a caliper body and a wiring harness assembly. The caliper body has a raised seat on its back with an assembly hole. The wiring harness assembly includes an EPB sensor wire, a protective structure, and an automatic locking structure. The protective structure includes a buffer seat on the raised seat and an energy release section on the EPB sensor wire. The automatic locking structure includes a first locking seat on the raised seat and a second locking seat on the EPB sensor wire. The second locking seat is self-locking within the first locking seat, forming a first locking point for the EPB sensor wire. The buffer seat is elastically fixed to the raised seat, forming a second locking point for the EPB sensor wire. The first locking seat is located near the control end, used to guide and fix the EPB sensor wire into the assembly hole. The buffer seat is located near the motor end, used to connect and fix the plug of the EPB sensor wire to the motor's lead terminal.

[0005] As a further preferred embodiment, the protrusion extends from the motor end of the caliper body to the control end of the caliper body, and a mounting hole is opened from one end of the protrusion to the other end.

[0006] As a further preferred embodiment, the first locking seat is provided with a first conical hole, which is a flared opening that gradually widens towards the outward end. The outer circular surface of the second locking seat is provided with a first tapered surface. The second locking seat is locked in the first conical hole through the first tapered surface. The second locking seat is provided with a second conical hole. A prismatic locking member is provided in the first conical hole. One end of the prismatic locking member is provided with a second tapered surface that extends into the first conical hole, and the other end of the prismatic locking member is provided with a third tapered surface that extends into the second conical hole.

[0007] As a further preferred embodiment, a threaded sleeve is connected through the side of the second locking seat, and a locking bolt is fitted inside the threaded sleeve. The inner end of the locking bolt enters the second locking seat to lock the second locking seat onto the EPB sensing line.

[0008] As a further preferred embodiment, the energy release section is fixed between the first locking seat and the buffer seat, and the energy release section is wavy and retracts within the assembly hole.

[0009] As a further preferred embodiment, the buffer seat has a first stepped hole facing the mounting hole. The first stepped hole is filled with a spring. The energy release section passes through the first stepped hole. A stop is fixed on the energy release section. The spring is sleeved on the EPB sensing line. The spring elastically abuts against one end of the first stepped hole and the stop.

[0010] As a further preferred embodiment, the end of the protruding seat used to mount the first locking seat has a second stepped hole, the outer surface of the first locking seat is conical, and the first locking seat is locked in the second stepped hole through the conical outer surface. As a further preferred embodiment, the end of the EPB sensing line extending from the buffer seat is close to the caliper body.

[0011] As a further preferred embodiment, a plurality of fixing members are provided along the length direction of the EPB sensing line.

[0012] The advantages of this invention compared to the prior art are: 1. High-efficiency synchronous double locking enhances assembly reliability and efficiency: The pulling force generated when connecting the EPB sensor wire terminals to the motor lead terminals is cleverly utilized. This force directly drives the second locking seat to automatically engage with the first locking seat, instantly and automatically forming the first stable locking point on the side of the mounting hole near the control end, significantly increasing the initial locking force. Simultaneously, it effectively houses the portion of the wire harness near the motor end within the protruding seat. This pulling force is transmitted to the buffer seat (elastically fixed to the protruding seat), causing it to simultaneously form the second locking point on the side of the mounting hole near the motor end. The simultaneous completion of the double locking points at the moment of terminal connection not only greatly increases the total locking force, ensuring absolute stability of the wire harness on the caliper body, but also eliminates additional locking steps, significantly improving assembly efficiency.

[0013] 2. Protective mechanism to effectively resist external impacts and extend harness life: Buffer locking protection: The buffer seat simultaneously serves as both a second locking point and a core protective component. It is tightly assembled onto the mounting hole, and its elastic properties not only contribute to the locking effect of the second locking point but, more importantly, provide a crucial buffering function.

[0014] 3. Impact Relief Section: Inside the mounting hole, the specially designed energy release section on the EPB sensor cable is crucial for protection. When the caliper assembly is installed, the exposed section of the wiring harness between the buffer seat and the motor terminal connection point will experience significant instantaneous impact energy and tensile force if struck by hard objects such as stones. At this moment, the energy release section of the EPB sensor cable is activated, rapidly stretching to absorb and dissipate the impact energy. This "softness overcomes hardness" mechanism transforms the potentially breakable tensile force into controllable elastic deformation, effectively preventing instantaneous breakage or internal damage to the wiring harness and significantly improving the EPB sensor cable's impact resistance and overall lifespan in harsh environments. The buffer seat also plays a role in reducing the destructive force transmitted to the root of the wiring harness during this process.

[0015] 4. Integrated design optimizes space and reliability: The protruding seat extends through the caliper body from the motor end to the control end, and its open mounting holes provide a compact and orderly channel for the entire wiring harness routing, fixing, and protection. The structure is compact, with high space utilization, while ensuring highly reliable protection and locking effects. Attached Figure Description

[0016] Figure 1 A schematic diagram of the external structure of an EPB caliper harness assembly provided for an embodiment of the present invention; Figure 2 An EPB caliper harness assembly provided for an embodiment of the present invention comprises... Figure 1 This is a schematic diagram from another perspective. Figure 3A schematic diagram of an EPB caliper harness assembly cut open, provided for an embodiment of the present invention; Figure 4 An EPB caliper harness assembly provided for an embodiment of the present invention comprises... Figure 3 Enlarged schematic diagram of part A; Figure 5 An EPB caliper harness assembly provided for an embodiment of the present invention comprises... Figure 3 Enlarged schematic diagram of section B; Figure 6 An EPB caliper harness assembly provided for an embodiment of the present invention comprises... Figure 3 A schematic diagram of the disassembled wiring harness assembly. Figure 7 An EPB caliper harness assembly provided for an embodiment of the present invention comprises... Figure 3 A schematic diagram showing the buffer seat and the second locking seat after removal.

[0017] In the diagram: 1. Caliper body; 2. Wiring harness assembly; 3. Protruding seat; 4. Control end; 5. Motor end; 6. Mounting hole; 7. EPB sensor wire; 8. Buffer seat; 9. Energy release section; 10. First locking seat; 11. Second locking seat; 12. First tapered hole; 13. First tapered surface; 14. Second tapered hole; 15. Prism-shaped locking element; 16. Second tapered surface; 17. Third tapered surface; 18. Threaded sleeve; 19. Locking bolt; 20. First stepped hole; 21. Spring; 22. Stop seat; 23. Second stepped hole; 24. Fixing element. Detailed Implementation

[0018] The above and other embodiments and advantages of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] In one implementation, such as Figures 1-7 As shown: This embodiment provides an EPB caliper wiring harness assembly, including a caliper body 1 and a wiring harness assembly 2. The caliper body 1 has a raised seat 3 on its back, and the raised seat 3 has an assembly hole 6. The wiring harness assembly 2 includes an EPB sensor wire 7, a protective structure, and an automatic locking structure. The protective structure includes a buffer seat 8 disposed on the raised seat 3 and an energy release section 9 disposed on the EPB sensor wire 7. The automatic locking structure includes a first locking seat 10 disposed on the raised seat 3 and a second locking seat 11 disposed on the EPB sensor wire 7. The second locking seat 11 is self-locked within the first locking seat 10 to form a first locking point for the EPB sensor wire 7. The buffer seat 8 is elastically fixed on the raised seat 3 to form a second locking point for the EPB sensor wire 7. The first locking seat 10 is close to the control end 4 to introduce the EPB sensor wire 7 into the assembly hole 6 and fix it. The buffer seat 8 is close to the motor end 5 to connect the plug of the EPB sensor wire 7 to the motor lead terminal and fix it.

[0020] The protrusion 3 extends from the motor end 5 of the caliper body 1 to the control end 4 of the caliper body 1, and has an assembly hole 6 extending from one end of the protrusion 3 to the other end.

[0021] Firstly, this embodiment is reflected in the connection method and performance. One terminal of the EPB sensor wire 7 is connected to the terminal of the motor end 5. After connection, a pulling force is provided to the EPB sensor wire 7. The pulling force is transmitted to the second locking seat 11, causing the second locking seat 11 to move relative to the first locking seat 10. The first locking point is formed between the second locking seat 11 and the first locking seat 10, which improves the locking force. At the same time, the end of the EPB sensor wire 7 near the motor end 5 is stored in the protrusion seat 3. Meanwhile, the pulling force is also transmitted to the buffer seat 8, forming a second locking point through one end of the buffer seat 8, which further improves the locking force. The first locking point is presented on one end of the assembly hole 6 through the second locking seat 11 and the first locking seat 10, and the second locking point is presented on the other end of the assembly hole 6 through the buffer seat 8. The two locking points are simultaneously locked when the terminal of the EPB sensor wire 7 is connected to the terminal of the motor end 5, which improves the assembly efficiency.

[0022] Secondly, this embodiment is reflected in its protective performance. The buffer seat 8 is not only tightly assembled on the mounting hole 6, but also has a buffering function. The EPB sensor wire 7 also passes through the buffer seat 8. After passing through the buffer seat 8, the EPB sensor wire 7 is connected to the motor end 5 through a terminal. In fact, the protruding end of the EPB sensor wire 7 is exposed between the buffer seat 8 and the motor end 5. When the caliper body 1 is assembled onto the wheel hub, if the protruding end of the EPB sensor wire 7 is hit by a stone, it is very likely to cause the EPB sensor wire 7 to break. However, in this embodiment, the EPB sensor wire 7 has an energy release section 9 in the mounting hole 6. When the exposed part of the EPB sensor wire 7 is hit by a stone, the energy release section 9 will be stretched and lengthened. Through the stretching and lengthening of the energy release section 9, the hard pull caused by the stone impact on the EPB sensor wire 7 can be resisted, avoiding the breakage of the EPB sensor wire 7 and improving the service life of the EPB sensor wire 7. The buffer seat 8 is used not only to confine one end of the EPB sensing line 7 within the outlet end of the mounting hole 6, but also to reduce the damaging force.

[0023] The pulling force generated when the EPB sensor wire 7 is connected to the motor end 5 lead terminal is cleverly utilized. This force directly drives the second locking seat 11 to automatically embed into the first locking seat 11, instantly and automatically forming the first stable locking point on the side of the mounting hole 6 near the control end, significantly improving the initial locking force, while effectively storing the part of the wire harness near the motor end 5 within the protrusion 3. This pulling force is transmitted to the buffer seat 8 (which is elastically fixed to the protrusion 3), causing it to simultaneously form the second locking point on the side of the mounting hole near the motor end 5. The two locking points are completed synchronously at the moment of connection of the terminals, which not only greatly improves the total locking force and ensures the absolute stability of the wire harness on the caliper body 1, but also eliminates the need for additional locking operation steps, greatly improving assembly efficiency. The buffer seat 8 plays a dual role as the second locking point and a core protective component. It is tightly assembled in the mounting hole 6, and its elastic characteristics not only contribute to the locking effect of the second locking point, but more importantly, provide a crucial buffering function.

[0024] Inside the mounting hole 6, the specially designed energy release section 9 on the EPB sensor wire 7 is crucial for protection. When the assembly is installed, if the exposed section of the wiring harness between the buffer seat 8 and the motor terminal 5 is struck by a hard object such as a stone, it will generate enormous instantaneous impact energy and tensile force. At this moment, the energy release section 9 of the EPB sensor wire 7 is activated and rapidly stretches, absorbing and dissipating the impact energy. This "softness overcomes hardness" mechanism transforms the rigid tension that could potentially break the wire core or connection point into controllable elastic deformation, effectively preventing instantaneous breakage or internal damage to the EPB sensor wire 7, significantly improving its impact resistance and overall service life in harsh environments. The buffer seat 8 also plays a role in reducing the destructive force transmitted to the root of the wiring harness during this process.

[0025] The raised seat 3 and its open mounting hole 6 provide a compact and orderly channel for the entire routing, fixing, and protection of the EPB sensor line 7. The compact structure and high space utilization ensure highly reliable protection and locking effects.

[0026] like Figure 3 , Figure 4 As shown, in another embodiment, the first locking seat 10 is provided with a first conical hole 12, which is a flared opening that gradually widens towards the outer end. The outer circular surface of the second locking seat 11 is provided with a first tapered surface 13. The second locking seat 11 is locked in the first conical hole 12 through the first tapered surface 13. The second locking seat 11 is provided with a second conical hole 14. The first conical hole 12 is provided with a prismatic locking member 15. One end of the prismatic locking member 15 is provided with a second tapered surface 16 that extends into the first conical hole 12, and the other end of the prismatic locking member 15 is provided with a third tapered surface 17 that extends into the second conical hole 14.

[0027] In this embodiment, based on the docking principle and through the first conical hole 12, the first conical surface 13, the second conical hole 14, and the second conical surface 16 and the third conical surface 17 on the prismatic locking member 15, a "multi-layer conical surface nested locking" mechanism is formed. When the conical surfaces are subjected to force, they generate radial force, which makes the second locking seat 11 and the first locking seat 10 tighter and tighter, thereby improving the self-reinforcing locking force. The prismatic locking member 15 resists multi-directional vibration and loosening by synchronously expanding the inner and outer layers through the double conical surfaces, thus achieving the purpose of double anchoring. The conical interlocking automatically completes the initial fixation during assembly, reducing manual operation steps and achieving the purpose of tool-free pre-locking.

[0028] like Figure 3 , Figure 4 As shown, in another embodiment, a threaded sleeve 18 is connected through the side of the second locking seat 11, and a locking bolt 19 is fitted inside the threaded sleeve 18. The inner end of the locking bolt 19 enters the second locking seat 11 to lock the second locking seat 11 onto the EPB sensing line 7.

[0029] In this embodiment, the installation position of the threaded sleeve 18 on the EPB sensor line 7 is adjusted by tightening the locking bolt 19. The adjustment is made according to the actual assembly situation, so that the assembly flexibility of the second locking seat 11 relative to the first locking seat 10 is adjusted, and the rationality is improved.

[0030] like Figures 4 to 6 As shown, in another embodiment, the energy release section 9 is fixed between the first locking seat 10 and the buffer seat 8, and the energy release section 9 is wavy and contracted within the assembly hole 6.

[0031] In this embodiment, the impact force first stretches the wavy wire harness of the energy release section 9, and absorbs more than 70% of the impact energy through deformation and extension to complete the first-level buffer. The residual energy pushes the stop seat 22 to compress the spring 21, which is converted into elastic potential energy and released to complete the second-level buffer. The wavy structure provides ≥30% stretch margin, which completely avoids the instantaneous tension from being transmitted to the connection terminal and prevents hard breakage. After the impact is relieved, the spring 21 pushes the stop seat 22 to reset, maintaining the wire harness in its initial relaxed state.

[0032] like Figure 5 As shown, in another embodiment, the buffer seat 8 has a first stepped hole 20 facing the mounting hole 6. A spring 21 is filled in the first stepped hole 20. The energy release section 9 passes through the first stepped hole 20, and a stop 22 is fixed to the energy release section 9. The spring 21 is sleeved on the EPB sensing wire 7, and the spring 21 elastically abuts against one end of the first stepped hole 20 and the stop 22. The protruding seat 3 has a second stepped hole 23 at one end for mounting the first locking seat 10. The outer surface of the first locking seat 10 is conical, and the first locking seat 10 is locked to the second stepped hole 23 through the conical outer surface.

[0033] The first stepped hole 20 serves as a positioning structure for the filling spring 21 and also as a guiding structure for the spring 21's buffering action, improving stability. The stop seat 22, as a component connected to the energy release section 9, presses against the spring 21 when the energy release section 9 is stretched to resist impact and reduce destructive force, forming a buffering effect. The second stepped hole 23 and the first locking seat 10's conical locking effect can eliminate assembly gaps and resist vibration displacement.

[0034] The end of the EPB sensor wire 7 extending from the buffer seat 8 is close to the caliper body 1 to minimize the exposed length of the EPB sensor wire 7 and reduce the impact of gravel.

[0035] like Figure 1 , Figure 3 As shown, several fasteners 24 are provided on the EPB sensor line 7 along its length for fixing it near the vehicle frame. The EPB sensor line 7 is actually quite long, but is omitted from the figure.

[0036] The above orientation references do not represent the specific orientations of each component in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme and to make relative descriptions based on the orientations of the references. In reality, the specific orientations of each component are based on their actual installation and use, as well as the orientation descriptions that are customary to those skilled in the art. This is hereby stated.

[0037] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An EPB caliper harness assembly, characterized in that, The device includes a caliper body (1) and a wiring harness assembly (2). The caliper body (1) has a raised seat (3) on its back, and a mounting hole (6) is provided on the raised seat (3). The wiring harness assembly (2) includes an EPB sensor wire (7), a protective structure, and an automatic locking structure. The protective structure includes a buffer seat (8) provided on the raised seat (3) and an energy release section (9) provided on the EPB sensor wire (7). The automatic locking structure includes a first locking seat (10) provided on the raised seat (3) and a second locking seat provided on the EPB sensor wire (7). (11) The second locking seat (11) is self-locked in the first locking seat (10) to form the first locking point for the EPB sensing line (7). The buffer seat (8) is elastically fixed on the protruding seat (3) to form the second locking point for the EPB sensing line (7). The first locking seat (10) is close to the control end (4) to introduce the EPB sensing line (7) into the assembly hole (6) and fix it. The buffer seat (8) is close to the motor end (5) to connect the plug of the EPB sensing line (7) to the lead terminal of the motor and fix it. The first locking seat (10) is provided with a first conical hole (12), which is a flared opening that gradually widens towards the outer end. The outer circular surface of the second locking seat (11) is provided with a first tapered surface (13). The second locking seat (11) is locked in the first conical hole (12) through the first tapered surface (13). The second locking seat (11) is provided with a second conical hole (14). The first conical hole (12) is provided with a prismatic locking member (15). One end of the prismatic locking member (15) is provided with a second tapered surface (16) that extends into the first conical hole (12), and the other end of the prismatic locking member (15) is provided with a third tapered surface (17) that extends into the second conical hole (14).

2. The EPB caliper harness assembly according to claim 1, characterized in that, The protrusion (3) extends from the motor end (5) of the caliper body (1) to the control end (4) of the caliper body (1), and an assembly hole (6) is opened from one end of the protrusion (3) to the other end.

3. The EPB caliper harness assembly according to claim 2, characterized in that, The second locking seat (11) has a threaded sleeve (18) connected through its side. A locking bolt (19) is fitted inside the threaded sleeve (18). The inner end of the locking bolt (19) enters the second locking seat (11) to lock the second locking seat (11) onto the EPB sensing line (7).

4. The EPB caliper harness assembly according to claim 1, characterized in that, The energy release section (9) is fixed between the first locking seat (10) and the buffer seat (8), and the energy release section (9) is wavy and contracted within the assembly hole (6).

5. An EPB caliper harness assembly according to claim 3, characterized in that, The buffer seat (8) has a first stepped hole (20) facing the assembly hole (6). The first stepped hole (20) is filled with a spring (21). The energy release section (9) passes through the first stepped hole (20). A stop (22) is fixed on the energy release section (9). The spring (21) is sleeved on the EPB sensing line (7). The spring (21) elastically abuts against one end of the first stepped hole (20) and the stop (22).

6. An EPB caliper harness assembly according to claim 4, characterized in that, The protruding seat (3) has a second stepped hole (23) at one end for mounting the first locking seat (10). The outer circular surface of the first locking seat (10) is conical, and the first locking seat (10) is locked in the second stepped hole (23) through the conical outer circular surface.

7. An EPB caliper harness assembly according to claim 6, characterized in that, The end of the EPB sensing line (7) extending from the buffer seat (8) is close to the caliper body (1).

8. An EPB caliper harness assembly according to claim 7, characterized in that, Several fasteners (24) are provided on the EPB sensing line (7) along its length direction.

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