Integrated motor packaging structure for automobile braking

Abstract

The utility model discloses an integrated motor packaging structure for automobile brake relates to automobile brake equipment technical field, including stator and rotor, the stator includes a plurality of stator core and the coil winding of winding on stator core, a plurality of stator core is formed annularly and arranges in parallel bending, the rotor outer surface is pasted with magnetic pole board, the rotor is located stator core center, the coil winding leads out drive wire for with external power supply connection at the front end of stator core, the front end and rear end of stator are equipped with front end injection molding part and rear end injection molding part respectively, be equipped with the protruding block of the drive wire of wrapping up on the front end injection molding part. The utility model forms injection molding part through directly injection molding in stator core front and back, realizes motor high integration, can rely on stator core and directly act as the function of motor shell, under the condition of not influencing motor performance, the appearance size of compression motor makes the outer diameter size of motor reduce, and the space is small.

Description

Technical Field

[0001] This utility model relates to the field of automotive braking equipment technology, and in particular to an integrated motor packaging structure for automotive braking. Background Technology

[0002] Electromechanical braking systems eliminate the traditional hydraulic braking force transmission method, directly driving the brakes with an electric motor to clamp the vehicle's brake discs or drums, thereby achieving braking. Its main advantages include short braking response time, high control precision, energy saving and environmental friendliness, enabling more efficient energy recovery and superior braking performance.

[0003] Electromechanical braking systems consist of two components: service brakes and parking brakes. To adapt to different application scenarios in passenger cars, commercial vehicles, or multi-purpose vehicles, electromechanical braking systems are developing towards lightweight, compact, redundant safety design, and intelligence.

[0004] Patent No. CN119554346A discloses a compact electromechanical braking mechanism integrating driving and parking functions, including a mounting bracket, a braking assembly, and a brake caliper assembly. The braking assembly includes a driving brake unit and a parking brake unit. The driving brake unit includes a brake motor and a reduction gear set. The brake caliper assembly is provided with a brake caliper, which is slidably mounted on the mounting bracket, and one end of the caliper is connected to the power end of the brake motor through the reduction gear set. The parking brake unit includes a parking motor, a ratchet, and a pawl. The above solutions are all relatively advanced actuator solutions in current automotive brake-by-wire systems. However, their shortcomings or defects include the excessively large size of the motor used in the gearbox, which is not friendly to the narrow wheel-side installation environment. Furthermore, the performance of the motor is directly proportional to its size, and the narrow wheel-side installation environment limits the size of the motor and also limits the performance of the gearbox, posing significant obstacles and challenges to the design and development of high-performance gearboxes. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes an integrated motor packaging structure for automotive braking, aiming to minimize the motor's external size while ensuring motor performance. This provides a space-saving and highly integrated internal structure layout scheme and a novel motor manufacturing process, thereby increasing the design freedom of the gearbox, reducing the design difficulty of the gearbox, and lowering the difficulty of size layout.

[0006] The technical solution of this utility model is as follows: An integrated motor packaging structure for automotive braking includes a stator and a rotor. The stator includes multiple stator cores and coil windings wound on the stator cores. The multiple stator cores are arranged side by side in a bent ring shape. The outer surface of the rotor is covered with magnetic pole plates. The rotor is located at the center of the stator core. The coil windings have drive wires led out from the front end of the stator core for connection with an external power source. The front end and rear end of the stator are respectively provided with a front injection molded part and a rear injection molded part. The front injection molded part has an extension block that wraps around the drive wire.

[0007] Preferably, the front injection molded part is further provided with multiple buckles, and the multiple buckles and protruding blocks are evenly arranged along the circumference of the front injection molded part. The buckles are used to fix the motor to the outside or external parts.

[0008] Preferably, the number of the buckles is three.

[0009] Preferably, the rotor includes a rotor core and a rotating shaft, the rotor core and the rotating shaft being an integral structure. Bearings are provided in both the front and rear injection molded parts, and the rotating shaft is rotatably connected to the front and rear injection molded parts via the bearings. Preferably, the portion of the rotating shaft extending out of the front injection molded part is the motor output shaft.

[0010] Preferably, the motor output shaft is a two-stage stepped shaft.

[0011] The beneficial effects of this utility model are as follows: 1. This utility model integrates the stator core and motor drive wires into a single structure by injection molding at both ends of the motor stator core. Without affecting the motor performance, it directly saves the motor housing, compresses the motor's external dimensions, reduces the outer diameter of the motor, occupies less space, facilitates subsequent size arrangement, greatly reduces the design and development difficulty of the gearbox, improves the design freedom of the gearbox, and is friendly to the narrow installation environment of automobile wheel side.

[0012] 2. This utility model forms a snap-fit ​​structure by directly injection molding the front injection molded part. This structure simplifies the manufacturing process and integrates the snap-fit ​​and the motor into a single structure, which can significantly improve assembly efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the motor of this utility model; Figure 2 This is a schematic diagram of the structure of the motor of this utility model; Component names and serial numbers: 1. Stator core; 2. Coil winding; 3. Rotor; 4. Magnetic pole plate; 5. Front injection molded part; 6. Rear injection molded part; 7. Bearing; 8. Drive shaft; 9. Drive wire; 10. Buckle; 11. Protruding block. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. The following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0015] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning as understood by a person skilled in the art to which this disclosure pertains. The words “comprising” or “including” or similar terms used in this disclosure mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0016] like Figure 1 and Figure 2As shown, this utility model provides an integrated motor packaging structure for automotive braking, including a stator and a rotor 3. The stator includes multiple stator cores 1 and coil windings 2 wound on the stator cores 1. The multiple stator cores 1 are arranged side by side in a bent ring shape. The rotor surface is covered with magnetic pole plates 4. The rotor is located at the center of the stator core 1. The coil windings 2 lead out drive wires 9 from the front end of the stator core 1 for connection with an external power source. The front end and rear end of the stator are respectively provided with a front injection molded part 5 and a rear injection molded part 6. The front injection molded part 5 is provided with an extension block 11 that wraps around the drive wires 9. This invention forms an integrated motor structure by injection molding the front and rear ends of the stator core 1. The injection-molded parts are attached to the front and rear ends of the stator core 1 to form end caps, while the stator core 1 can be directly exposed to serve as the motor housing. This integrated motor structure saves the motor housing without affecting the motor performance, thus greatly compressing the motor's external dimensions, reducing the outer diameter of the motor, occupying less space, facilitating subsequent size arrangement, significantly reducing the design and development difficulty of the gearbox, increasing the design freedom of the gearbox, and being very friendly to the narrow installation environment of automobile wheel rims.

[0017] Specifically, the front injection molded part 5 is also provided with multiple buckles 10. The multiple buckles 10 and the protruding blocks 11 are evenly arranged along the circumference of the front injection molded part 5. The buckles 10 are used to fix the motor to the outside or external parts. In this embodiment, the number of buckles 10 is three. By forming the buckles 10 directly during injection molding, not only can additional processing costs be saved, but the quick assembly and disassembly characteristics of the buckle 10 structure are also very suitable for the scenario where automotive brake motors need to be assembled in a confined space.

[0018] Specifically, the rotor 3 includes a rotor core and a rotating shaft 8. The rotor core and the rotating shaft 8 are an integrated structure. Both the front injection molded part 5 and the rear injection molded part 6 are provided with bearings 7. The rotating shaft 8 is rotatably connected to the front injection molded part 5 and the rear injection molded part 6 through the bearings 7, thereby achieving fixed constraint on both ends of the rotor 3 and making its motor work stably and reliably.

[0019] Specifically, the drive shaft 8 and the motor output shaft are an integral structure, and the part of the rotating shaft extending out of the front injection-molded part 5 is the motor output shaft. Furthermore, the motor output shaft is a two-stage stepped shaft. It is worth noting that a large amount of space is reserved at the mating point between the motor output shaft end and the external parts, greatly improving the design freedom of the external parts. Moreover, the stepped shaft offers a high degree of design freedom for modification, allowing for updates to the mating with the external parts.

[0020] This utility model directly injection molds the front and rear end covers at both ends of the motor stator, with the stator core 1 of the motor directly serving as the motor shell. The stator core 1, the front injection molded part 5, and the rear injection molded part 6 are integrated into a single structure, which greatly improves the integration of the motor, makes the overall structure of the motor more integrated, minimizes the size of the motor, simplifies the processing and assembly process, and makes assembly more convenient and efficient.

[0021] The above description is a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and concept of this utility model, should be covered within the protection scope of the claims of this utility model.

Claims

1. An integrated motor package structure for automotive braking, comprising a stator and a rotor, characterized in that: The stator includes multiple stator cores (1) and coil windings (2) wound on the stator cores (1). The multiple stator cores (1) are arranged side by side in a bent ring. The outer surface of the rotor (3) is covered with magnetic pole plates (4). The rotor (3) is located at the center of the stator core (1). The coil windings (2) lead out a drive wire (9) from the front end of the stator core (1) for connection with an external power source. The front end and rear end of the stator are respectively provided with a front injection molded part (5) and a rear injection molded part (6). The front injection molded part (5) is provided with an extension block (11) that wraps around the drive wire (9).

2. The integrated motor packaging structure for automotive braking according to claim 1, characterized in that: The front injection molded part (5) is also provided with multiple buckles (10), and the multiple buckles (10) and the protruding block (11) are evenly arranged along the circumference of the front injection molded part (5). The buckles (10) are used to fix the motor to the outside or external parts.

3. The integrated motor packaging structure for automotive braking according to claim 2, characterized in that: The number of the buckles (10) is three.

4. The integrated motor packaging structure for automotive braking according to any one of claims 1-3, characterized in that: The rotor (3) includes a rotor core and a rotating shaft (8). The rotor core and the rotating shaft (8) are an integrated structure. The front injection molding part (5) and the rear injection molding part (6) are both provided with bearings (7). The rotating shaft (8) is rotatably connected to the front injection molding part (5) and the rear injection molding part (6) through the bearings (7).

5. The integrated motor packaging structure for automotive braking according to claim 4, characterized in that: The portion of the rotating shaft (8) extending out of the front injection molded part (5) is the motor output shaft.

6. The integrated motor packaging structure for automotive braking according to claim 5, characterized in that: The motor output shaft is a two-stage stepped shaft.

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