Electronic mechanical brake caliper assembly

Abstract

The invention discloses an electronic mechanical brake caliper assembly which comprises a brake caliper assembly and a motor assembly, the brake caliper assembly comprises a brake caliper body, the motor assembly comprises a motor shell and a motor stator and rotor assembly, the motor shell and the brake caliper body are of an integrated structure, and the motor stator and rotor assembly is arranged in the brake caliper body. The electronic mechanical brake caliper assembly is reasonable in structural design, the motor shell is integrated on the brake caliper body, internal parts are directly assembled in the motor cavity of the brake caliper body, the size of the brake caliper assembly and the number of the parts are reduced, the structure is more compact, and arrangement is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle braking systems, and in particular to an electronic mechanical brake caliper assembly. Background Art

[0002] The electronic mechanical brake caliper assembly includes the brake caliper body assembly, motor assembly and ECU assembly; compared with traditional hydraulic calipers or EPB calipers, the volume and weight are increased, and the motor is large; at the same time, if the ECU assembly is included, the volume will be further increased, so it is more difficult to arrange it at the wheel end. The front and rear wheel arrangements are prone to interference with the suspension, rims, drive shafts, etc. On the other hand, the increase in unsprung mass also has a certain impact on the vehicle's handling.

[0003] The motor assembly and brake caliper body of the existing electronic mechanical brake caliper assembly are separate and connected together by bolts. At the same time, the motor assembly is large in size, and the brake caliper body needs to reserve installation space for the motor, which requires a large space for the layout of the wheel-end caliper assembly and is not conducive to layout. At the same time, the solution with the motor and brake caliper body separated has a large number of parts.

[0004] For example, patent CN109707771A discloses a brake caliper assembly for electronic parking, comprising an actuator assembly and a caliper body assembly. The actuator assembly includes a motor and a power transmission mechanism, which comprises a first gear transmission mechanism, a second gear transmission mechanism, and a planetary gear mechanism connected in sequence. The motor housing and the caliper body are separate structures. Another example is patent CN218817770U, which discloses an electronically controlled brake caliper assembly, comprising an MGU, an ECU, and a brake caliper assembly. The ECU and MGU are integrated, and the MGU is connected to the brake caliper assembly. The caliper body has a through-hole, through which the motor is installed. The motor housing and the caliper body are also separate structures. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides an electronic mechanical brake caliper assembly, wherein the motor housing is integrated into the brake caliper body, thereby reducing the volume of the caliper assembly and the number of parts.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The electronic mechanical brake caliper assembly includes a brake caliper assembly and a motor assembly. The brake caliper assembly includes a brake caliper body. The motor assembly includes a motor housing and a motor stator and rotor assembly. The motor housing and the brake caliper body are integrated into one structure. The motor stator and rotor assembly is arranged in the brake caliper body.

[0008] Further or preferred:

[0009] A motor cavity is provided in the brake caliper body, the wall of the motor cavity forms a motor housing, and the motor stator and rotor assembly is provided in the motor cavity.

[0010] The brake caliper assembly further comprises a bracket and a brake pad assembly arranged on the bracket. The bracket and the brake caliper body are connected via a pin hole structure, and the pin hole structure is arranged around the motor cavity.

[0011] A groove is provided at one end of the brake caliper body corresponding to the motor cavity port, and a deceleration structure module is provided in the groove.

[0012] An opening is provided on the brake caliper body corresponding to the bottom of the motor cavity, and a detachable motor tail cover is provided at the opening.

[0013] The brake caliper body is provided with a shell cover for sealing corresponding to the groove.

[0014] It also includes an ECU assembly, which is arranged corresponding to the groove of the brake caliper body, and the ECU assembly forms an integrated cover structure that seals the groove.

[0015] The opening on the brake caliper body is a threaded hole, and the motor tail cover is fixed by the motor tail cover screws matching with the threaded hole.

[0016] The edge of the ECU assembly is connected to the edge of the brake caliper body groove through a connecting structure.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The electronic mechanical brake caliper assembly has a reasonable structural design. The motor housing is integrated into the brake caliper body, and the internal components are directly assembled into the motor cavity of the brake caliper body, which reduces the volume of the caliper assembly and the number of components, making the structure more compact and conducive to layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief description of the contents and symbols in the drawings of this specification:

[0020] Figure 1 This is a structural diagram of the electronic mechanical brake caliper (with ECU assembly) of the present invention.

[0021] Figure 2 This is a schematic structural diagram of the electronic mechanical brake caliper (without ECU assembly) of the present invention.

[0022] Figure 3 This is an exploded view of the electronic mechanical brake caliper (with ECU assembly) of the present invention.

[0023] Figure 4 This is an exploded view of the electronic mechanical brake caliper (without the ECU assembly) of the present invention.

[0024] Figure 5This is a schematic diagram of the motor housing of the present invention being integrated into the brake caliper.

[0025] Figure 6 This is an exploded view of the motor assembly and brake caliper of the present invention.

[0026] In the picture:

[0027] 1. Brake caliper assembly (with ECU assembly);

[0028] 2. Brake caliper assembly (without ECU assembly);

[0029] 3. ECU assembly; 4. Speed reduction module; 5. Motor stator and rotor assembly; 6. Brake caliper assembly; 7. Inner brake pad assembly; 8. Bracket; 9. Outer brake pad assembly; 10. Housing; 12. Brake caliper body; 20. Motor tail cover screws; 30. Motor tail cover; 40. Motor tail cover O-ring;

[0030] 12a, brake caliper body bridge; 12b, brake caliper body hook; 12c, motor housing; 12d, brake caliper guide hole; 12e, motor housing cavity; 12f, speed reduction mechanism installation cavity. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention will be further explained in detail below through description of embodiments with reference to the accompanying drawings.

[0032] The innovation of the electronic mechanical brake caliper assembly of the present invention mainly lies in the brake caliper body. Various structural schemes adopted in the transmission and execution parts are all within the protection scope of the present invention. The present invention integrates the motor housing into the brake caliper body, and directly assembles the internal components into the motor cavity of the brake caliper body, reducing the volume of the caliper assembly and the number of components, making the structure more compact and conducive to layout.

[0033] like Figures 1 to 6 As shown, the electronic mechanical brake caliper assembly includes a brake caliper assembly 6 and a motor assembly; the brake caliper assembly 6 includes a brake caliper body 12, a bracket 8 and a brake pad assembly arranged on the bracket; the motor assembly includes a motor housing and a motor stator and rotor assembly 5, the motor housing and the brake caliper body are an integrated structure, and the motor stator and rotor assembly is arranged in the brake caliper body.

[0034] Furthermore, a motor cavity is provided in the brake caliper body 12, the motor cavity wall forms a motor housing, and the motor stator and rotor assembly is provided in the motor cavity, eliminating the traditional separate motor housing structure. The motor assembly structure is directly integrated in the brake cavity, and the structure is more compact.

[0035] A groove is provided at one end of the brake caliper body corresponding to the motor cavity port, and a deceleration structure module 4 is provided in the groove. The execution structure provided in the caliper body corresponds to the deceleration structure module; the bracket 8 and the brake caliper body are connected by a pin hole structure, and the pin hole structure is arranged around the motor cavity, and the structure is compact.

[0036] The groove at one end of the brake caliper body integrates the reduction mechanism installation cavity 12f and the motor housing cavity 12e, and the other end of the brake caliper body is the brake caliper body hook claw 12b, which is used to position the bracket. The middle part of the caliper body is the brake caliper body bridge part 12a; the brake caliper body forms a motor housing 12c corresponding to the motor housing cavity, and a support ear extends from the motor housing position on the caliper body, and a brake caliper guide hole 12d is provided on the support ear. The guide pin on the bracket cooperates with the guide hole to form a guide structure. The guide structure is arranged around the motor housing, and the structure is more compact.

[0037] The brake pad assembly includes an inner brake pad assembly 7 and an outer brake pad assembly 9, and the inner brake pad assembly corresponds to the execution part arrangement.

[0038] An opening is provided on the brake caliper body corresponding to the bottom of the motor cavity, and a detachable motor tail cover 30 is provided at the opening. Furthermore, the opening on the brake caliper body is a threaded hole, and the motor tail cover is fixed with the threaded hole by the motor tail cover screw 20, and a motor tail cover O-ring 40 is provided at the mating position.

[0039] like Figure 3 The figure shows the brake caliper assembly (with ECU assembly) 1;

[0040] The electronic mechanical brake caliper assembly further includes an ECU assembly 3, which is arranged corresponding to the groove of the brake caliper body. The ECU assembly forms an integrated cover structure that seals the groove, eliminating the need for a separate shell cover.

[0041] The edge of the ECU assembly is connected to the edge of the brake caliper body groove through a connecting structure; the connecting structure can be a docking connecting frame, which is connected through a fastener or a snap-fit structure.

[0042] Or, as Figure 4 The brake caliper assembly (without the ECU assembly) 2 is shown;

[0043] The brake caliper body is provided with a shell cover 10 for sealing corresponding to the groove; it is separated from the ECU assembly and assembled through a single shell cover.

[0044] Preferred embodiments of the present invention are:

[0045] The brake caliper body and the motor are integrated into an integrated electronic mechanical brake caliper. The motor housing is integrated into the brake caliper body, forming a one-piece body with the caliper body. The internal components of the motor are directly assembled into the motor housing of the brake caliper body. This reduces the volume of the caliper assembly, the number of components, the weight of the components, and one set of sealing pairs.

[0046] The guide pin holes of the electronic mechanical brake caliper can be on the bracket or on the brake caliper body. The guide holes or guide pin mounting holes on the caliper body can be arranged around the motor housing, which is flexible for the wheel end arrangement to form a compact arrangement.

[0047] The electromechanical brake caliper has space reserved for the reduction mechanism, allowing it to be integrated directly with the ECU assembly or assembled separately through a single housing cover. The caliper and ECU housing cover are sealed using either a flat surface on the caliper body, a flat surface on the ECU, and a sealing ring, or a boss on the caliper body, a groove in the ECU assembly or housing cover, and an O-ring.

[0048] A detachable tail cover structure is added to the rear of the brake caliper motor housing to facilitate motor performance testing.

[0049] The electronic-mechanical brake caliper assembly is driven by an electric motor. The deceleration mechanism module decelerates the vehicle, and the piston of the brake caliper assembly pushes the inner and outer brake pads to clamp the brake disc, achieving the braking function. At the same time, the control unit (ECU) assembly can also be integrated into the caliper. Due to the large size of the electronic-mechanical brake caliper assembly's motor, a large space is required for assembly with the brake caliper. In addition, the guide structure of the brake caliper must be avoided, making wheel-end layout space difficult. Integrating the motor housing with the brake caliper body can reduce the overall volume of the electronic-mechanical brake caliper assembly, making the structure more compact and reducing the number of parts. The guide holes on the brake caliper can be flexibly adjusted around the outer ring of the motor housing on the brake caliper body according to the layout space of the entire vehicle.

[0050] The motor stator and rotor assembly 5 is assembled into the inner cavity 12e of the brake caliper motor housing. A motor tail cover mounting hole is reserved at the tail of the motor. Installation and sealing are achieved through the motor tail cover 30, the motor tail cover O-ring 40 and the motor tail cover screw 20. If the motor performance needs to be tested, the motor tail cover screw 20 and the motor tail cover 30 can be removed to achieve motor performance testing.

[0051] The above is only an illustration of a preferred embodiment of the present invention. The above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0052] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. An electromechanical brake caliper assembly, comprising a brake caliper assembly (6) and a motor assembly, wherein the brake caliper assembly (6) comprises a brake caliper body (12), and the motor assembly comprises a motor housing (12c) and a motor stator and rotor assembly (5), characterized in that: The motor housing (12c) and the brake caliper body (12) are an integrated structure, and the motor stator and rotor assembly (5) is arranged in the brake caliper body (12).

2. The electromechanical brake caliper assembly according to claim 1, characterized in that: A motor cavity is provided in the brake caliper body (12), the wall of the motor cavity forms a motor housing (12c), and the motor stator and rotor assembly (5) is provided in the motor cavity.

3. The electromechanical brake caliper assembly according to claim 1, characterized in that: The brake caliper assembly (12) further comprises a bracket (8) and a brake pad assembly arranged on the bracket, wherein the bracket and the brake caliper body are connected via a pin hole structure, and the pin hole structure is arranged around the motor cavity.

4. The electromechanical brake caliper assembly according to claim 2, characterized in that: One end of the brake caliper body (12) is provided with a groove corresponding to the motor cavity port, and a speed reduction structure module (4) is provided in the groove.

5. The electromechanical brake caliper assembly according to claim 2, characterized in that: An opening is provided on the brake caliper body (12) corresponding to the bottom of the motor cavity, and a detachable motor tail cover (30) is provided at the opening.

6. The electromechanical brake caliper assembly according to claim 4, characterized in that: The brake caliper body (12) is provided with a shell cover (10) for sealing corresponding to the groove.

7. The electromechanical brake caliper assembly according to claim 4, characterized in that: It also includes an ECU assembly (3), which is arranged corresponding to the groove of the brake caliper body (12), and the ECU assembly (3) forms an integrated cover structure that seals the groove.

8. The electromechanical brake caliper assembly according to claim 5, characterized in that: The opening on the brake caliper body (12) is a threaded hole, and the motor tail cover is fixed in the threaded hole by a motor tail cover screw (20).

9. The electromechanical brake caliper assembly according to claim 7, characterized in that: The edge of the ECU assembly (3) and the groove edge of the brake caliper body (12) are connected via a connecting structure.

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