Built-in brake clamping force transmission module assembly and brake motor assembly thereof

Abstract

This utility model relates to the field of brake calipers, and discloses a built-in brake clamping force transmission module assembly and its brake motor assembly. The clamping force transmission module includes an upper module and a lower module, with upper and lower pins respectively injection-molded in the upper and lower modules. The upper and lower pins are electrically connected via a flexible flat cable. Several PCBA elastic contact pins are mounted on the PCBA board, and a pin module is provided on the force sensor. The pin module includes several sensor elastic pins for transmitting brake clamping force signals. The sensor elastic pins are connected to the lower pins, and the PCBA elastic contact pins are connected to the upper pins, so that the signal emitted by the force sensor is transmitted to the PCBA through the clamping force transmission module. In this utility model, the clamping force transmission module, PCBA, and force sensor are all connected by elastic pin contacts. When the elastic pin contacts are connected, precise alignment is not required during assembly, reducing the requirements for the production and assembly accuracy of related components, simplifying the assembly process, and avoiding losses caused by improper assembly.

Description

Technical Field

[0001] This utility model relates to the field of brake calipers, and in particular to an integrated brake clamping force transmission module assembly and its brake motor assembly. Background Technology

[0002] EMB (Electromechanical Brake) calipers use a combination of electronic and mechanical braking. They employ electrical wiring as the energy signal transmission medium, and a motor drives a ball screw to actuate friction pads for braking. To achieve precise control of the braking force, a force sensor is introduced into the caliper braking system as a closed-loop control detection method. Therefore, higher requirements are placed on how the force sensor can be conveniently and reliably connected to the ECU controller for signal transmission. For example, Chinese invention patent CN117104204A, entitled "Electromechanical Braking Device with Mounting Surface Fitting and Wiring in Vehicles," discloses an electromechanical braking device with mounting surface fitting and wiring. This device includes a driver housing and a brake housing. Each housing includes a mounting surface, and at least one mounting surface includes at least one groove. This groove is used to avoid at least one signal transmission line, which is used to electrically connect to at least one circuit component housed within the driver housing or the brake housing. If the wiring harness is built-in, this structure presents challenges due to complex assembly procedures; if it is external, it is prone to damage and has poor reliability. Furthermore, the slotted structure allows dust to enter, affecting the clamping mechanism. Therefore, a built-in brake clamping force transmission module assembly and its brake motor assembly are urgently needed to solve these problems. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by providing a built-in brake clamping force transmission module assembly and its brake motor assembly, which provides more stable transmission between the force sensor and the ECU, and optimizes the sealing structure.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution: An integrated brake clamping force transmission module assembly includes a clamping force transmission module, which is used to connect the PCBA of the brake motor assembly to a force sensor for acquiring the brake clamping force. The clamping force transmission module includes an upper module and a lower module. The upper module and the lower module are respectively injection molded with upper pins and lower pins. The upper pins and the lower pins are electrically connected by a flexible flat cable. The two ends of the flexible flat cable are fixed to the upper pins and the lower pins by a flat cable fixing block. The PCBA has several onboard PCBA elastic contact pins, and the force sensor has a pin module. This module includes several sensor elastic pins for transmitting braking clamping force signals. The sensor elastic pins connect to the lower pins, and the PCBA elastic contact pins connect to the upper pins, allowing the force sensor signal to be transmitted to the PCBA via the clamping force transmission module. This achieves efficient communication and power supply between the PCBA and the force sensor. The elastic pin design has a certain buffering compensation capability, absorbing offsets caused by assembly tolerances and vibrations, preventing bending failures, and ensuring the continuity and stability of signal transmission. This is particularly suitable for scenarios with extremely high reliability requirements, such as automotive braking systems. The clamping force transmission module connects to both the PCBA and the force sensor using elastic pin contacts. When using elastic pin contacts, precise alignment is not required during assembly, reducing the manufacturing precision requirements of related components and thus lowering the overall assembly precision. This simplifies the assembly process and avoids losses caused by improper assembly.

[0005] Because the clamping force transmission module is connected to the PCBA and force sensor using elastic pin contacts, the reliability of signal transmission under strong vibration conditions is improved, avoiding the problem of rigid pins breaking due to long-term vehicle vibration, and extending the service life of the brake clamping force transmission module assembly.

[0006] Preferably, the bottom of the upper module and the top of the lower module are respectively provided with flexible flat cable fixing protrusions, and the upper and lower flat cable fixing blocks are respectively provided with openings that mate with the flexible flat cable fixing protrusions. The flexible flat cable can be bent to accommodate errors during assembly or vibrations generated during use. The flexible flat cable positioning protrusion has corresponding positioning openings at both ends of the flexible flat cable, which serve to position the welding and prevent the welding from falling off due to pulling.

[0007] Preferably, the bottom of the upper module is provided with an upper protruding positioning part, and the bottom of the lower module is provided with a lower protruding positioning part.

[0008] Preferably, a bushing is installed on the top of the upper module.

[0009] Preferably, the upper surface of the lower module is provided with an annular groove for accommodating lubricating grease. Typically, a planetary gear set is mounted on the upper surface of the lower module. The presence of lubricating grease in the annular groove reduces friction between the gear transmission components and the lower module during rotation, thus extending their service life.

[0010] The brake motor assembly includes, from top to bottom, an ECU upper cover, a PCBA, an ECU main housing, and a lower housing. The PCBA is connected to the brake clamping force transmission module assembly. The top of the ECU main housing is fitted with the ECU upper cover, and the bottom of the ECU main housing is fitted with the lower housing of the brake motor assembly. The top of the lower housing of the brake motor assembly is provided with a mounting base for mounting the upper module and a mounting slot for accommodating the lower module.

[0011] Preferably, the upper module is mounted on the mounting base by bolts.

[0012] Preferably, the bottom of the upper module is provided with an upper protruding positioning part, and the mounting base is provided with an upper positioning hole that mates with the upper protruding positioning part.

[0013] Preferably, an installation channel for accommodating the flexible flat cable is formed between the mounting slot and the mounting base. The shape of the mounting slot matches the shape of the lower module. The bottom of the lower module is provided with a lower protruding positioning part, and the bottom wall of the mounting slot is provided with a lower positioning hole that mates with the lower protruding positioning part.

[0014] Preferably, the ECU main housing has a male terminal interface for connecting to an external vehicle controller on its side. The male terminal interface is connected to the PCBA via an interface connection pin. The ECU main housing has a through hole for the PCBA's elastic contact pin to pass through. The top of the ECU main housing has a connection terminal for connecting the actuator motor power supply pin to the PCBA.

[0015] This utility model, by adopting the above technical solution, has significant technical effects: 1. The brake clamping force signal transmission structure is built into the EMB caliper assembly, with no external exposed parts, reducing waterproof and dustproof issues; 2. The clamping force transmission module is connected to the PCBA and force sensor using flexible pin contacts, which reduces the precision requirements for the production of related components and assembly. 3. The clamping force transmission module, PCBA, and force sensor are all connected by elastic pin contacts, which improves the reliability of signal transmission under strong vibration conditions and avoids the problem of pin metal fatigue and breakage caused by vibration under vibration durability conditions. Precise alignment is not required when assembling the product, which makes product assembly simpler, reduces the requirements for production equipment, improves production efficiency, and avoids losses caused by improper assembly.

[0016] 4. The clamping force transmission module is built into the EMB caliper assembly, with no external exposed parts, eliminating waterproofing and dustproofing issues. Compared to using external cables to connect the force sensor and controller for signal transmission, the product assembly is simpler, the signal transmission is safer and more reliable, and the components are more versatile. Attached Figure Description

[0017] Figure 1 Side view of the clamping force transmission module of this utility model; Figure 2 : A schematic diagram of the clamping force transmission module of this utility model; Figure 3 Another structural view of the clamping force transmission module of this utility model; Figure 4 : Exploded view of the clamping force transmission module of this utility model; Figure 5 : Exploded view of the brake motor assembly of this utility model; Figure 6 : Exploded view of the ECU main housing assembly structure of this utility model; Figure 7 : A structural diagram of the lower shell of this utility model.

[0018] The names of the body parts indicated by the numbers in the attached diagrams are as follows: The forms are categorized and summarized for ease of understanding and subsequent use: 2. Brake motor assembly; 20. ECU top cover; 21. Clamping force transmission module; 211. Upper module; 2112. Upper protruding positioning part; 2113. Bushing; 212. Flexible ribbon cable; 213. Lower module; 2131. Lower PIN pin; 2132. Lower protruding positioning part; 2133. Annular groove; 214. Ribbon cable fixing block; 215. Flexible ribbon cable fixing protrusion; 23. PCBA; 231. PCBA elastic contact PIN pin; 24. ECU main housing; 241. Gear positioning shaft; 245. Sealing ring groove; 246. Wiring harness male terminal interface; 247. Interface connection PIN pin; 248. Connection terminal; 26. Lower housing; 266. Mounting base; 267. Mounting channel; 2661. Upper positioning hole; 268. Lower positioning hole; 32. Force sensor; 322. PIN pin module; 3221. Sensor elastic PIN pin. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0020] An integrated brake clamping force transmission module assembly, such as Figure 1-4 As shown, it includes a clamping force transmission module 21, which is used to connect the PCBA 23 of the brake motor assembly 2 to the force sensor 32 for obtaining the braking clamping force; The clamping force transmission module 21 includes an upper module 211 and a lower module 213. Upper pins 2111 and lower pins 2131 are respectively injection molded in the upper module 211 and the lower module 213. Upper pins 2111 and lower pins 2131 are electrically connected by a flexible flat cable 212. The two ends of the flexible flat cable 212 are fixed to the upper pins 2111 and lower pins 2131 by a cable fixing block 214. The PCBA23 has several PCBA elastic contact pins 231 on its board. The force sensor 32 is equipped with a pin module 322. The pin module 322 includes several sensor elastic pins 3221 for transmitting braking clamping force signals. The sensor elastic pins 3221 are connected to the lower pins 2131, and the PCBA elastic contact pins 231 are connected to the upper pins 2111, so that the force sensor 32 sends a signal to the PCBA23 through the clamping force transmission module 21.

[0021] The bottom of the upper module 211 and the top of the lower module 213 are respectively provided with flexible flat cable fixing protrusions 215, and the upper and lower flat cable fixing blocks 214 are respectively provided with openings that cooperate with the flexible flat cable fixing protrusions 215.

[0022] The bottom of the upper module 211 is provided with an upper protruding positioning part 2112, and the bottom of the lower module 213 is provided with a lower protruding positioning part 2132.

[0023] A bushing 2113 is installed on the top of the upper module 211.

[0024] The upper surface of the lower module 213 is provided with an annular groove 2133 for accommodating lubricating grease.

[0025] The brake motor assembly 2 includes, from top to bottom, an ECU upper cover 20, a PCBA 23, an ECU main housing 24, and a lower housing 26. The PCBA 23 is connected to the brake clamping force transmission module assembly. The top of the ECU main housing 24 is fitted with the ECU upper cover 20, and the bottom of the ECU main housing 24 is fitted with the brake motor assembly lower housing 26. The top of the brake motor assembly lower housing 26 is provided with a mounting seat 266 for mounting the upper module 211 and a mounting groove 261 for accommodating the lower module 213.

[0026] The upper module 211 is mounted on the mounting base 266 by bolts.

[0027] The bottom of the upper module 211 is provided with an upper protruding positioning part 2112, and the mounting base 266 is provided with an upper positioning hole 2661 that cooperates with the upper protruding positioning part 2112.

[0028] An installation channel 267 for accommodating the flexible flat cable 212 is formed between the mounting groove 261 and the mounting base 266. The shape of the mounting groove 261 matches the shape of the lower module 213. The bottom of the lower module 213 is provided with a lower protruding positioning part 2132. The bottom wall of the mounting groove 261 is provided with a lower positioning hole 268 that cooperates with the lower protruding positioning part 2132.

[0029] The ECU main housing 24 has a male terminal interface 246 for connecting to an external vehicle controller on its side. The male terminal interface 246 is connected to the PCBA 23 via an interface connection pin 247. The ECU main housing 24 has a through hole 244 for the PCBA elastic contact pin 231 to pass through. The top of the ECU main housing 24 has a connection terminal 248 for connecting the actuator motor power supply pin to the PCBA 23.

[0030] During braking, the ECU drives the actuator motor to rotate according to braking requirements, which in turn drives the friction pad assembly to clamp the brake disc. The force sensor 32 detects the clamping force in real time and feeds it back to the ECU module of the PCBA through the clamping force transmission module 21. The PCBA supplies power to the force sensor 32, forming a closed-loop control. During braking, real-time brake clamping force feedback can be obtained at any time. When the deceleration obtained by the vehicle does not match the preset brake pedal travel, the torque output of the actuator motor can be adjusted according to the brake clamping force feedback from the force sensor.

[0031] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In summary, the above are merely preferred embodiments of this utility model. All equivalent variations and modifications made within the scope of the claims of this utility model should be covered by this utility model patent.

Claims

1. An integrated brake clamping force transmission module assembly, including a clamping force transmission module (21), wherein the clamping force transmission module (21) is used to connect the PCBA (23) of the brake motor assembly (2) to a force sensor (32) for obtaining the brake clamping force. Its features are: The clamping force transmission module (21) includes an upper module (211) and a lower module (213). The upper module (211) and the lower module (213) are respectively injection molded with an upper PIN pin (2111) and a lower PIN pin (2131). The upper PIN pin (2111) and the lower PIN pin (2131) are electrically connected by a flexible flat cable (212). The two ends of the flexible flat cable (212) are fixed to the upper PIN pin (2111) and the lower PIN pin (2131) by a flat cable fixing block (214). The PCBA (23) has several PCBA elastic contact pins (231) on its upper board. The force sensor (32) is provided with a pin module (322). The pin module (322) includes several sensor elastic pins (3221) for transmitting braking clamping force signals. The sensor elastic pins (3221) are connected to the lower pins (2131), and the PCBA elastic contact pins (231) are connected to the upper pins (2111), so that the force sensor (32) sends a signal to the PCBA (23) through the clamping force transmission module (21).

2. The built-in brake clamping force transmission module assembly according to claim 1, characterized in that: The bottom of the upper module (211) and the top of the lower module (213) are respectively provided with flexible flat cable fixing protrusions (215), and the upper and lower flat cable fixing blocks (214) are respectively provided with openings that cooperate with the flexible flat cable fixing protrusions (215).

3. The built-in brake clamping force transmission module assembly according to claim 1, characterized in that: The bottom of the upper module (211) is provided with an upper protruding positioning part (2112), and the bottom of the lower module (213) is provided with a lower protruding positioning part (2132).

4. The built-in brake clamping force transmission module assembly according to claim 1, characterized in that: A bushing (2113) is installed on the top of the upper module (211).

5. The built-in brake clamping force transmission module assembly according to claim 1, characterized in that: The upper surface of the lower module (213) is provided with an annular groove (2133) for accommodating lubricating grease.

6. A brake motor assembly, characterized in that: The brake motor assembly (2) includes an ECU top cover (20), a PCBA (23), an ECU main housing (24), and a lower housing (26) arranged from top to bottom. The PCBA (23) is connected to the brake clamping force transmission module assembly according to any one of claims 1-5. The top of the ECU main housing (24) is fitted with the ECU top cover (20), and the bottom of the ECU main housing (24) is fitted with the lower housing (26) of the brake motor assembly. The top of the lower housing (26) of the brake motor assembly is provided with a mounting seat (266) for mounting the upper module (211) and a mounting groove (261) for accommodating the lower module (213).

7. The brake motor assembly according to claim 6, characterized in that: The upper module (211) is mounted on the mounting base (266) by bolts.

8. The brake motor assembly according to claim 7, characterized in that: The bottom of the upper module (211) is provided with an upper protruding positioning part (2112), and the mounting base (266) is provided with an upper positioning hole (2661) that cooperates with the upper protruding positioning part (2112).

9. The brake motor assembly according to claim 6, characterized in that: An installation channel (267) for accommodating the flexible flat cable (212) is formed between the mounting groove (261) and the mounting base (266). The shape of the mounting groove (261) matches the shape of the lower module (213). The bottom of the lower module (213) is provided with a lower protruding positioning part (2132). The bottom wall of the mounting groove (261) is provided with a lower positioning hole (268) that cooperates with the lower protruding positioning part (2132).

10. The brake motor assembly according to claim 6, characterized in that: The ECU main housing (24) has a wire harness male terminal interface (246) on its side for connecting to an external vehicle controller. The wire harness male terminal interface (246) is connected to the PCBA (23) via an interface connection pin (247). The ECU main housing (24) has a through hole (244) for the PCBA elastic contact pin (231) to pass through. The top of the ECU main housing (24) has a connection terminal (248) for connecting the actuator motor power supply pin to the PCBA (23).

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