CN114183481B

CN114183481B - Bidirectional reinforcement type electromechanical brake actuator based on double-side eccentric wheel and worm gear

Info

Publication number: CN114183481B
Application number: CN202111066966.1A
Authority: CN
Inventors: 杨坤; 王杰; 聂孟稳; 邵长江; 马超; 郭君; 何肖军; 黄壮壮
Original assignee: Shandong University of Technology
Current assignee: Shandong University of Technology
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-10-04
Anticipated expiration: 2041-09-13
Also published as: CN114183481A

Abstract

The invention provides a bidirectional reinforcement type electromechanical brake actuator based on double-side eccentric wheels and worm gears, which mainly comprises an installation base body, a motor, a worm wheel, a worm, the double-side eccentric wheels, a return spring, a brake caliper and the like; when braking, the motor shaft rotates, and the worm drives the worm wheel to rotate; the worm wheel drives the eccentric wheels at the two sides to rotate clockwise around the rotating shaft; the eccentric wheel at the two sides pushes the rear brake lining base to move forwards through the second needle bearing, and the rear brake lining is driven to press the brake disc through the rear brake lining guide post and the rear brake lining mounting base plate; the eccentric wheels at the two sides push the front brake caliper supporting seat to move backwards through the first needle bearing, and the front brake lining is driven to press the brake disc through the brake caliper supporting column and the brake caliper front plate; therefore, braking force is applied to the wheels, the magnitude of the braking force can be adjusted by adjusting the torque of the motor, and the scheme can provide a solution for a traditional braking system and an active braking system.

Description

Bidirectional reinforcement type electromechanical brake actuator based on double-side eccentric wheel and worm gear

Technical Field

The invention belongs to the technical field of automobile braking, and particularly relates to a bidirectional reinforcement type electromechanical braking actuator based on double-side eccentric wheels and worm gears.

Background

The brake system is an important component which directly influences the driving safety of the automobile and is a hotspot of research of various automobile companies; as described in "light automobile electromechanical braking and stability control system research" (yangkun. Light automobile electromechanical braking and stability control system research [ D ]. Vinpocetine university, 2009), electromechanical braking is used as a new braking system, and larger components such as a vacuum booster and a hydraulic pipeline are eliminated, so that the whole automobile chassis is simpler and more flexible in arrangement, has the advantages of high pressure regulation speed and accuracy, and can significantly improve the braking performance of the whole automobile.

Besides the advantage of improving the braking safety of the traditional automobile, the electromechanical braking can also effectively meet the requirements of new energy automobiles and automatic driving automobiles on braking systems; as described in the EMB-based research on decoupled braking energy recovery systems [ J ] in automotive engineering, 2016, 38 (8): 1072-1079 ], the electromechanical braking system can meet the requirements of the decoupled braking energy recovery systems on accurate and independent adjustment of brake pedal feel and wheel braking force, and can realize an active braking function, so that research on the electromechanical braking system has important significance in improving the economy of an electric vehicle and promoting the electromotion and intellectualization of the vehicle, which makes the electromechanical braking system become an object of research attention again on the vehicle braking system.

At present, the electromechanical brake in China is still in a research stage, how to effectively reduce the volume and the quality of an electromechanical brake actuator becomes a key influencing the popularization and application of the electromechanical brake actuator on the premise of meeting the braking requirement of a finished automobile, and aiming at the problem, an inventor proposes various solutions, such as a bidirectional synchronous boosting type electromechanical brake actuator based on a rotating motor and a ball screw (Yangkun, wangjie, ZL, and the like; a bidirectional synchronous boosting type electromechanical brake actuator based on a rotating motor and a ball screw [ P ]. 201910996691.8), and the like, but further researches show that the above solutions have two problems: firstly, the scheme is particularly suitable for the condition that the installation space of the brake system is smaller along the Z-axis direction of the vehicle coordinate system and is larger along the Y-axis direction of the vehicle coordinate system, otherwise, the brake system is easy to interfere with other components; secondly, the brake pressures on the two sides of the brake disc are not completely synchronous, and the asynchronism is smaller but better if the brake pressures can be completely synchronous; therefore, the invention provides a novel electromechanical brake actuator structure on the basis of earlier research, the electromechanical brake actuator can ensure that the braking forces on two sides of a brake disc are completely synchronous, and can effectively reduce the size of a mechanism along the Y-axis direction of a vehicle coordinate system on the premise of not increasing the size of the mechanism along the Z-axis direction of the vehicle coordinate system, so that the loading adaptability of the electromechanical brake actuator is further improved.

Disclosure of Invention

The utility model provides a two-way reinforcement formula electromechanical braking executor based on two side eccentric wheels and worm gear, its characterized in that:

the motor (1) is a rotating motor, and an external spline is arranged on a motor shaft (36).

The mounting base body of the bidirectional reinforcement type electromechanical brake actuator based on the double-sided eccentric wheel and the worm gear comprises a first side plate (3), a top plate (5), a second side plate (24), a bottom plate (26), a third side plate (33), a rear plate (37) and a front plate (40).

The top plate (5), the second side plate (24) and the bottom plate (26) are all of cuboid structures.

The left end face of bottom plate (26) and the left end face coplanar of second curb plate (24), bottom plate up end (G2) and the lower terminal surface coplanar and fixed connection of second curb plate (24), the left end face of bottom plate (26) is on a parallel with bottom plate right-hand member face (G1), the left end face of second curb plate (24) is on a parallel with second curb plate right-hand member face (B1).

The front end face (G3) of the bottom plate and the front end face (C4) of the front plate are coplanar, the upper end face (G2) of the bottom plate and the lower end face of the front plate (40) are coplanar and fixedly connected, the lower end face of the front plate (40) is parallel to the upper end face (C3) of the front plate, and the rear end face of the front plate (40) is parallel to the front end face (C4) of the front plate.

The rear end face of the bottom plate (26) is coplanar with the rear end face of the rear plate (37), the upper end face (G2) of the bottom plate is coplanar with the lower end face of the rear plate (37) and fixedly connected with the rear end face, the lower end face of the rear plate (37) is parallel to the upper end face (F3) of the rear plate, and the rear end face of the rear plate (37) is parallel to the front end face (F4) of the rear plate.

The front end surface (D3) of the third side plate is coplanar with the front end surface (G3) of the bottom plate and the front end surface (C4) of the front plate; the rear end face of the third side plate (33) is coplanar with the rear end face of the bottom plate (26) and the rear end face of the rear plate (37); the right end face (C2) of the first front plate and the left end face (D4) of the third side plate are coplanar and fixedly connected; the right end face (F2) of the first back plate and the left end face (D4) of the third side plate are coplanar and fixedly connected.

The upper end surface (G2) of the bottom plate and the lower end surface (D5) of the third side plate are coplanar and fixedly connected, the left end surface (D4) of the third side plate and the upper end surface (G2) of the bottom plate form an obtuse angle, and the left end surface (D4) of the third side plate is parallel to the right end surface (D2) of the third side plate; the rear end face of the third side plate (33) is parallel to the front end face (D3) of the third side plate.

The left end face of the front plate (C5) is coplanar with the left end face of the second side plate (24), the front end face of the second side plate (B3) is coplanar with the rear end face of the front plate (40) and is fixedly connected with the front end face of the second side plate, the left end face of the second side plate (24) is parallel to the right end face of the second side plate (B1), and the rear end face of the front plate (40) is parallel to the front end face of the front plate (C4).

The left end face (F5) of the rear plate is coplanar with the left end face of the second side plate (24), and the rear end face of the second side plate (24) is coplanar with the front end face (F4) of the rear plate and fixedly connected with the rear plate.

The front end surface (A3) of the top plate and the front end surface (C4) of the front plate are coplanar, and the lower end surface of the top plate (5) and the upper end surface (C3) of the front plate are coplanar and fixedly connected; the left end face of the top plate (5) is coplanar with the left end face of the second side plate (24), and the lower end face of the top plate (5) is coplanar and fixedly connected with the upper end face (B2) of the second side plate; the rear end face of the top plate (5) is coplanar with the rear end face of the rear plate (37), and the lower end face of the top plate (5) is coplanar with and fixedly connected with the upper end face (F3) of the rear plate; the lower end face of the top plate (5) is parallel to the upper end face (A2) of the top plate, the left end face of the second side plate (24) is parallel to the right end face (B1) of the second side plate, and the rear end face of the rear plate (37) is parallel to the front end face (F4) of the rear plate; the right end face (B1) of the second side plate, the front end face (C4) of the front plate and the front end face (F4) of the rear plate are all perpendicular to the upper end face (A2) of the top plate.

The front end surface (E3) of the first side plate is coplanar with the front end surface (G3) of the bottom plate, the front end surface (D3) of the third side plate and the front end surface (A3) of the top plate; the rear end face of the first side plate (3) is coplanar with the rear end face of the bottom plate (26), the rear end face of the third side plate (33) and the rear end face of the top plate (5); the front end surface (E3) of the first side plate is parallel to the rear end surface of the first side plate (3); the left end surface of the first side plate (3) and the right end surface (C1) of the second front plate are coplanar and fixedly connected; the left end surface of the first side plate (3) and the right end surface (F1) of the second rear plate are coplanar and fixedly connected; the upper end face (E2) of the first side plate and the lower end face of the top plate (5) are coplanar and fixedly connected, and the right end face (E1) of the first side plate and the upper end face (A2) of the top plate form an obtuse angle.

The right end face (D2) of the third side plate is coplanar with the lower end face of the first side plate (3), the upper end face (D1) of the third side plate is coplanar and fixedly connected with the left end face of the first side plate (3), and the right end face (D2) of the third side plate is parallel to the left end face (D4) of the third side plate and is perpendicular to the left end face of the first side plate (3).

A motor shaft through hole (39) and four motor fixing threaded holes (38) are formed in the right end face (E1) of the first side plate, the motor fixing threaded holes (38) are used for fixing the motors (1), and the number of the motor fixing threaded holes is not limited to 4.

As shown in fig. 1, the motor (1) is fixedly connected with the first side plate (3) through a motor fixing bolt (2) and a motor fixing threaded hole (38), and the central axis of the motor shaft (36) is superposed with the central axis of the motor shaft through hole (39) and is perpendicular to the right end face (E1) of the first side plate.

After passing through the motor shaft through hole (39), the motor shaft (36) is in fit connection with an internal spline in a worm internal spline hole (58) at the end part of the worm (35).

Be equipped with first right side board through-hole (42) and second right side board through-hole (45) on second side board right-hand member face (B1), the central axis of first right side board through-hole (42) and second right side board through-hole (45) all is perpendicular to second side board right-hand member face (B1), and the plane at first right side board through-hole (42) central axis and second right side board through-hole (45) central axis place is on a parallel with second side board up end (B2).

Be equipped with first preceding braking pincers support column through groove (43) and second preceding braking pincers support column through groove (44) on second curb plate up end (B2), the bottom surface of first preceding braking pincers support column through groove (43), the bottom surface of second preceding braking pincers support column through groove (44) is on a parallel with second curb plate up end (B2).

The rear brake lining guide rail seat (15) is of a plate-shaped structure, and a first rear brake lining guide rail seat through hole (52) and a second rear brake lining guide rail seat through hole (49) are formed in the upper end surface (I1) of the rear brake lining guide rail seat; a first sealing ring groove (53) and a first dust ring groove (54) are formed in each first rear brake lining guide rail seat through hole (52), and the central axes of the first rear brake lining guide rail seat through hole (52), the first sealing ring groove (53) and the first dust ring groove (54) are overlapped and perpendicular to the upper end face (I1) of the rear brake lining guide rail seat; and a second sealing ring groove (50) and a second dustproof ring groove (51) are formed in the second rear brake lining guide rail seat through hole (49), and the central axes of the second rear brake lining guide rail seat through hole (49), the second sealing ring groove (50) and the second dustproof ring groove (51) are overlapped and are perpendicular to the upper end surface (I1) of the rear brake lining guide rail seat.

The rear brake lining guide rail seat (15) is fixedly connected with the second side plate (24), the lower end face of the rear brake lining guide rail seat (15) is coplanar with the right end face (B1) of the second side plate, and the lower end face of the rear brake lining guide rail seat (15) is parallel to the upper end face (I1) of the rear brake lining guide rail seat.

The diameters of the first right side plate through hole (42) and the second right side plate through hole (45) are equal to the diameters of the first rear brake lining guide rail seat through hole (52) and the second rear brake lining guide rail seat through hole (49), after the installation, the central axis of the first right side plate through hole (42) coincides with the central axis of the first rear brake lining guide rail seat through hole (52), and the central axis of the second right side plate through hole (45) coincides with the central axis of the second rear brake lining guide rail seat through hole (49).

The front end face (F4) of the rear plate is provided with a first rotating shaft mounting hole (41), the rear end face of the front plate (40) is provided with a second rotating shaft mounting hole (46), and the central axes of the first rotating shaft mounting hole (41) and the second rotating shaft mounting hole (46) are overlapped and perpendicular to the front end face (F4) of the rear plate.

The center axis of the rotating shaft (12) coincides with the center axes of the first rotating shaft mounting hole (41) and the second rotating shaft mounting hole (46), and the rotating shaft (12) is fixed between the first rotating shaft mounting hole (41) and the second rotating shaft mounting hole (46).

The worm mounting base body (32) is of a cuboid structure, a second worm bearing mounting hole (48) and a first worm bearing mounting hole (47) are sequentially formed in the rear end face (H1) of the worm mounting base body, the central axis of the first worm bearing mounting hole (47) is coincident with the central axis of the second worm bearing mounting hole (48), the central axis of the first worm bearing mounting hole (47) is perpendicular to the rear end face (H1) of the worm mounting base body and is parallel to the upper end face (H2) of the worm mounting base body, the radius of the second worm bearing mounting hole (48) is larger than that of the first worm bearing mounting hole (47), the worm bearing (31) is arranged in the second worm bearing mounting hole (48), one end of the worm bearing is fixed by a convex shoulder formed by the first worm bearing mounting hole (47) and the second worm bearing mounting hole (48), one end of the worm bearing is fixed by the bearing cover (30), and the bearing mounting shaft (59) penetrates through the first worm bearing mounting hole (47) to be matched with the inner ring of the worm bearing (31); the upper end face (H2) of the worm mounting base body is parallel to the left end face (D4) of the third side plate, the lower end face of the worm mounting base body (32) is overlapped with the left end face (D4) of the third side plate and is fixedly connected with the same, and the rear end face (H1) of the worm mounting base body and the left end face (H3) of the worm mounting base body are perpendicular to the left end face (D4) of the third side plate.

A front brake caliper guide rail seat (6), a first limiting block (16) and a second limiting block (57) are fixed on the lower end face (A4) of the top plate, the front brake caliper guide rail seat (6), the first limiting block (16) and the second limiting block (57) are of cuboid structures, the upper end face (J1) of the front brake caliper guide rail seat, the upper end face of the first limiting block (16) and the upper end face of the second limiting block (57) are coplanar with the lower end face (A4) of the top plate, the front end face (J2) of the front brake caliper guide rail seat is parallel to the right end face (A1) of the top plate, a first front brake caliper guide rail seat through hole (55) and a second front brake caliper guide rail seat through hole (56) are formed in the front end face (J2) of the front brake caliper guide rail seat, the central axis of the first front brake caliper guide rail seat through hole (55) and the central axis of the second front brake caliper guide rail seat through hole (56) are parallel to each other and perpendicular to the front end face (J2) of the front brake caliper guide rail seat; the front end surface of the first limiting block (16), the front end surface of the second limiting block (57) and the left end surface of the top plate (5) are coplanar; after assembly, a first limiting block (16) is arranged in a first front brake caliper supporting column through groove (43), a second limiting block (57) is arranged in a second front brake caliper supporting column through groove (44), the left end face and the right end face of the first limiting block (16) are coplanar with the left end face and the right end face of the first front brake caliper supporting column through groove (43) respectively, and the left end face and the right end face of the second limiting block (57) are coplanar with the left end face and the right end face of the second front brake caliper supporting column through groove (44) respectively.

The double-side eccentric wheel (29) is of a symmetrical cylindrical structure, a rotating shaft through hole (60) is formed in the front end face (L2) of the double-side eccentric wheel, the axis of the rotating shaft through hole (60) is perpendicular to the front end face (L2) of the double-side eccentric wheel, and the front end face (L2) of the double-side eccentric wheel is parallel to the rear end face (L5) of the double-side eccentric wheel.

After assembly, the center axes of the rotating shaft (12), the first rotating shaft mounting hole (41), the second rotating shaft mounting hole (46) and the rotating shaft through hole (60) are overlapped with each other.

A worm wheel (34) is fixedly connected with the eccentric wheels (29) on the two sides, and a worm wheel connecting surface (M1) and a worm wheel connecting surface (L4) of the eccentric wheel are coplanar; the center axis of the worm wheel (34) and the center axis of the rotary shaft through hole (60) coincide with each other.

The brake caliper consists of a front brake caliper support seat (9), a brake caliper front plate (19), a first front brake caliper support column (11), a second front brake caliper support column (63), a first front brake caliper guide column (8) and a second front brake caliper guide column (61); the front plate (19) of the brake caliper is of a bilaterally symmetrical structure, a U-shaped groove (64) of the front plate of the brake caliper is arranged in the middle, the front brake lining (20) is fixedly connected with the front plate (19) of the brake caliper through the U-shaped groove (64) of the front plate of the brake caliper, and the connection mode is the same as that of the traditional brake caliper.

The brake caliper front plate (19) is fixedly connected with the front brake caliper support seat (9) through a first front brake caliper support column (11) and a second front brake caliper support column (63); the first front brake caliper support column (11), the second front brake caliper support column (63) and the front brake caliper support seat (9) are all of cuboid structures; after the brake caliper support seat is installed, the upper end surface (S2) of the brake caliper front plate, the upper end surface (Q2) of the first front brake caliper support column, the upper end surface (R2) of the second front brake caliper support column and the upper end surface (N2) of the front brake caliper support seat are coplanar; first front brake caliper support column rear end face (Q1), second front brake caliper support column rear end face (R1) and front brake caliper supporting seat rear end face (N4) coplanar.

The front end surface of a first front brake caliper support column (11), the front end surface of a second front brake caliper support column (63) and a brake caliper front plate rear end surface (S1) are coplanar, the front end surface of the first front brake caliper support column (11) is parallel to a first front brake caliper support column rear end surface (Q1), and the front end surface of the second front brake caliper support column (63) is parallel to a second front brake caliper support column rear end surface (R1); the left end face of a first front brake caliper support column (11), the left end face of a brake caliper front plate (19) and the left end face of a front brake caliper support seat (9) are coplanar, and the left end face of the brake caliper front plate (19) is parallel to the right end face (S3) of the brake caliper front plate; and the right end surface (R3) of the support column of the second front brake caliper, the right end surface (S3) of the front plate of the brake caliper and the right end surface (N3) of the support seat of the front brake caliper are coplanar.

Brake caliper guide post (8) are the cylinder structure before first preceding brake caliper guide post (8) and the second, the external diameter of the two, length equality, brake caliper guide post up end (O1) is on a parallel with first preceding brake caliper guide post lower terminal surface (O2) before the first preceding brake caliper guide post, brake caliper guide post up end (P1) is on a parallel with brake caliper guide post lower terminal surface (P2) before the second, brake caliper guide post lower terminal surface (O2) before the first preceding brake caliper guide post, brake caliper guide post lower terminal surface (P2) and preceding brake caliper supporting seat front end face (N1) coplanar before the second, the central axis of first preceding brake caliper guide post (8) and second preceding brake caliper guide post (61) is parallel to each other, and brake caliper supporting seat front end face (N1) before the perpendicular to.

A first needle bearing mounting groove (62) is formed in the rear end face (N4) of the front brake caliper support seat, the first needle bearing mounting groove (62) is of a rectangular structure, a first needle bearing (10) is fixedly mounted in the first needle bearing mounting groove (62), and a needle of the first needle bearing (10) is perpendicular to the upper end face (N2) of the front brake caliper support seat.

The outer portions of the first front brake caliper guide post (8) and the second front brake caliper guide post (61) are respectively sleeved with a front brake caliper return spring (7), the central axes of the two front brake caliper return springs are respectively superposed with the central axes of the first front brake caliper guide post (8) and the second front brake caliper guide post (61), and the front brake caliper return springs (7) are fixed between the front brake caliper guide rail seat (6) and the front brake caliper support seat (9).

After assembly, the first front brake caliper support post (11) is placed in the first front brake caliper support post channel (43), and the second front brake caliper support post (63) is placed in the second front brake caliper support post channel (44).

The first rear brake lining guide post (14) and the second rear brake lining guide post (65) are of cylindrical structures, the outer diameter, the inner diameter and the length of the first rear brake lining guide post and the second rear brake lining guide post are equal, the upper end face (T1) of the first rear brake lining guide post is parallel to the lower end face (T2) of the first rear brake lining guide post, the upper end face (U1) of the second rear brake lining guide post is parallel to the lower end face (U2) of the second rear brake lining guide post, 6 first rear brake lining guide post bolt holes (67) are uniformly distributed in the upper end face (T1) of the first rear brake lining guide post, and the number of the first rear brake lining guide post bolt holes (67) is not limited to 6; 6 second rear brake lining guide post bolt holes (66) are uniformly distributed in the upper end face (U1) of the second rear brake lining guide post, and the number of the second rear brake lining guide post bolt holes (66) is not limited to 6.

The rear brake lining base (28) is of a cuboid structure, the lower end face of the rear brake lining base (28) is parallel to the upper end face (V1) of the rear brake lining base, a second needle bearing installation groove (68) is formed in the lower end face of the rear brake lining base (28), the second needle bearing installation groove (68) is of a rectangular structure, a second needle bearing (13) is fixedly installed in the second needle bearing installation groove (68), and a needle roller of the second needle bearing (13) is perpendicular to the right end face (V2) of the rear brake lining base.

The first rear brake lining guide column (14) and the second rear brake lining guide column (65) are fixedly connected with the rear brake lining base (28), the lower end face (T2) of the first rear brake lining guide column and the lower end face (U2) of the second rear brake lining guide column are coplanar with the upper end face (V1) of the rear brake lining base, and the central axes of the first rear brake lining guide column (14) and the second rear brake lining guide column (65) are parallel to each other and perpendicular to the upper end face (V1) of the rear brake lining base.

After assembly, the double-sided eccentric wheel (29) is contacted with the second needle bearing (13) through a working surface (L1) of the first double-sided eccentric wheel; the double-sided eccentric (29) is in contact with the first needle bearing (10) via a second double-sided eccentric running surface (L3).

The central axes of the first rear brake lining guide post (14), the first rear brake lining guide rail seat through hole (52) and the first right side plate through hole (42) are coincident with each other, and the first rear brake lining guide post (14) sequentially passes through the first rear brake lining guide rail seat through hole (52) and the first right side plate through hole (42) and is fixedly connected with the rear brake lining mounting base plate (22); the central axes of the second rear brake lining guide post (65), the second rear brake lining guide rail seat through hole (49) and the second right side plate through hole (45) coincide with each other, and the second rear brake lining guide post (65) sequentially penetrates through the second rear brake lining guide rail seat through hole (49) and the second right side plate through hole (45) and is fixedly connected with the rear brake lining installation bottom plate (22).

And a rear brake lining return spring (27) is sleeved outside each of the first rear brake lining guide column (14) and the second rear brake lining guide column (65), the central axes of the two rear brake lining return springs (27) are respectively superposed with the central axes of the first rear brake lining guide column (14) and the second rear brake lining guide column (65), and the rear brake lining return springs (27) are fixed between the rear brake lining guide rail seat (15) and the rear brake lining base (28).

The rear brake lining mounting base plate (22) is of a cuboid structure, rear brake lining fixing base bolt holes (69) are arranged on the front end surface (W1) of the rear brake lining fixing base and correspond to the first rear brake lining guide post bolt holes (67) and the second rear brake lining guide post bolt holes (66) in position one by one, and the rear brake lining fixing base bolt holes (69) are countersunk bolt holes; the rear brake lining mounting base plate (22) is fixedly connected with the first rear brake lining guide column (14) and the second rear brake lining guide column (65) through a rear brake lining seat fixing bolt (21), a first rear brake lining guide column bolt hole (67), a second rear brake lining guide column bolt hole (66) and a rear brake lining fixing seat bolt hole (69); the rear end face (W3) of the rear brake lining fixing seat is coplanar with the upper end face (T1) of the first rear brake lining guide column and the upper end face (U1) of the second rear brake lining guide column, and the rear end face (W3) of the rear brake lining fixing seat is parallel to the front end face (W1) of the rear brake lining fixing seat.

And 2 rear brake lining clamping seats (70) are symmetrically arranged on the right end surface (W2) of the rear brake lining fixing seat and the left end surface of the rear brake lining mounting base plate (22).

Two rear brake lining buckles (71) are arranged on the front end face (X1) of the rear brake lining and close to the upper end face (X2) of the rear brake lining, and the rear brake lining buckles (71) are matched with the rear brake lining buckle seat (70) to fix the rear brake lining (17).

Compared with the traditional braking system scheme: according to the scheme, all functions of traditional braking can be realized, and active braking can be realized, so that solutions are provided for a traditional vehicle braking system, a decoupling type braking energy recovery system of a new energy vehicle and a braking system of an intelligent driving vehicle.

Compared with the existing electromechanical brake actuator: the scheme is a brand new structural style; under the condition of the same volume, the boosting effect of the scheme is larger, and under the condition of the same braking force, the scheme has smaller volume; the scheme can realize complete synchronization of the brake pressures on the two sides of the brake disc; compared with a unilateral reinforcement scheme, the reinforcement time is shorter; in addition, the size of the mechanism along the Y-axis direction of the vehicle coordinate system can be effectively reduced, and the loading adaptability of the mechanism is further improved.

Drawings

FIG. 1 is an electromechanical brake actuator assembly view.

Fig. 2 is a three-dimensional structural view of the mounting substrate.

Fig. 3 is an exploded view of a three-dimensional structure of a mounting substrate.

Fig. 4 is a three-dimensional structural view of the mounting base with the first side plate and the top plate removed.

Fig. 5 is a rear view of the front plate.

Fig. 6 is a front view of the back plate.

Fig. 7 is a three-dimensional structural view of the third side plate and the worm mounting base after assembly.

Fig. 8 is an exploded view of the assembled three-dimensional structure of the third side plate and the worm mounting base.

FIG. 9 is a three-dimensional block diagram of a rear brake pad guide rail seat.

FIG. 10 is a three-dimensional block diagram of the assembled partially installed base, rear brake pad guide rail seat, and rotating shaft.

Fig. 11 is a three-dimensional structural view of a front caliper guide rail seat.

Fig. 12 is a three-dimensional structure diagram of a limiting block.

FIG. 13 is a three-dimensional structure view of the limiting block, the front brake caliper guide rail seat and the top plate after assembly.

Fig. 14 is a view showing a structure of a worm.

Fig. 15 is a three-dimensional structure diagram of a double-sided eccentric wheel 1.

Fig. 16 is a three-dimensional structure diagram of a double-sided eccentric wheel 2.

Fig. 17 is a three-dimensional structural view of the worm wheel.

Fig. 18 is a three-dimensional structural view after the worm wheel and the eccentric wheel are assembled.

Figure 19 is an elevation view of the worm gear and eccentric assembled.

FIG. 20 is a three dimensional block diagram of the assembled scroll, worm gear, eccentric and worm bearing mounting shaft.

FIG. 21 is a top view of the assembled worm, worm gear, eccentric and worm bearing mounting shaft.

Fig. 22 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 21.

FIG. 23 is a three-dimensional assembly view of the front brake caliper support seat, the first front brake caliper guide post and the second front brake caliper guide post.

Fig. 24 is an exploded view of the three-dimensional assembly of the front caliper support seat, the first front caliper guide post, the second front caliper guide post and the first needle bearing.

FIG. 25 is a top view of the front caliper support seat, the first front caliper guide post, the second front caliper guide post and the first needle bearing assembled.

FIG. 26 is a rear three-dimensional assembly view of the front brake caliper front plate, the first front brake caliper support post, the second front brake caliper support post, the front brake caliper support seat, the first front brake caliper guide post, and the second front brake caliper guide post.

Fig. 27 is an exploded view of the assembled three-dimensional structure of the front brake caliper front plate, the first front brake caliper support post, the second front brake caliper support post, the first needle bearing, the front brake caliper support seat, the first front brake caliper guide post, and the second front brake caliper guide post.

FIG. 28 is a three-dimensional block diagram of the rear brake pad backing and the assembled first and second rear brake pad guide posts.

Fig. 29 is an exploded view of the assembled three-dimensional structure of the rear brake pad backing and the first, second and second rear brake pad guide posts and second needle bearings.

FIG. 30 is a top view of the rear brake pad carrier and the first, second and second needle bearings after assembly.

FIG. 31 is a three-dimensional assembly drawing 1 of a front brake caliper front plate, a first front brake caliper support post, a second front brake caliper support post, a front brake caliper support seat, a first front brake caliper guide post, a second front brake caliper guide post, a first needle bearing, a double-sided eccentric wheel, a second needle bearing, a rear brake pad base, a first rear brake pad guide post, and a second rear brake pad guide post.

FIG. 32 is a three-dimensional assembly view of a front brake caliper front plate, a first front brake caliper support post, a second front brake caliper support post, a front brake caliper support seat, a first front brake caliper guide post, a second front brake caliper guide post, a first needle bearing, a double-sided eccentric, a second needle bearing, a rear brake pad base, a first rear brake pad guide post, and a second rear brake pad guide post 2.

FIG. 33 is a three-dimensional view of a rear brake pad mounting baseplate.

FIG. 34 is a top view of the rear brake pad mounting baseplate.

FIG. 35 is a rear brake pad mounting baseplate B-B view.

FIG. 36 is a three-dimensional structural view of the rear brake pad.

In the figure: 1. a motor; 2. a motor fixing bolt; 3. a first side plate; 4. a front brake caliper guide rail end cover; 5. a top plate; 6. A front brake caliper guide rail seat; 7. a front brake caliper return spring; 8. a first front brake caliper guide post; 9. a front brake caliper support seat; 10. A first needle bearing; 11. a first front brake caliper support post; 12. a rotating shaft; 13. a second needle bearing; 14. a first rear brake pad guide post; 15. a rear brake lining guide rail seat; 16. a first stopper; 17. a rear brake pad; 18. a brake disc; 19. a brake caliper front plate; 20. a front brake pad; 21. a rear brake pad holder fixing bolt; 22. a rear brake lining mounting base plate; 23. a dust ring; 24. a second side plate; 25. a seal ring; 26. a base plate; 27. a rear brake pad return spring; 28. a rear brake pad backing; 29. eccentric wheels at two sides; 30. a bearing cap; a 31 worm bearing; 32. a worm mounting base; 33. a third side plate; 34. a worm gear; 35. a worm; 36. a motor shaft; 37. a back plate; 38. a motor fixing threaded hole; 39. a motor shaft through hole; 40. a front plate; 41. a first rotating shaft mounting hole; 42. a first right side plate through hole; 43. a first front brake caliper support column through groove; 44. a second front brake caliper support post through slot; 45. a second right side plate through hole; 46. a second rotating shaft mounting hole; 47. A first worm bearing mounting hole; 48. a second worm bearing mounting hole; 49. a second rear brake lining guide rail seat through hole; 50. a second seal ring groove; 51. a second dust ring groove; 52. a first rear brake lining guide rail seat through hole; 53. a first seal ring groove; 54. A first dust ring groove; 55. a first front brake caliper guide rail seat through hole; 56. a second front brake caliper guide rail seat through hole; 57. a second limiting block; 58. a worm inner spline hole; 59. a worm bearing mounting shaft; 60. a rotating shaft through hole; 61. a second front brake caliper guide post; 62. a first needle bearing mounting groove; 63. a second front brake caliper support post; 64. a brake caliper front plate U-shaped groove; 65. A second rear brake pad guide post; 66. a second rear brake pad guide post bolt hole; 67. a first rear brake pad guide post bolt hole; 68. a second needle bearing mounting groove; 69. a rear brake lining fixing seat bolt hole; 70. a rear brake lining snap seat; 71. and a rear brake lining buckle.

Description of the end faces in the figures

In fig. 3, 8, 13: a1, the right end face of a top plate; a2, the upper end surface of the top plate; a3, the front end face of the top plate; a4, the lower end face of the top plate; b1, the right end face of the second side plate; b2, the upper end face of the second side plate; b3, the front end face of the second side plate; c1, the right end face of the second front plate; c2, the right end face of the first front plate; c3, the upper end surface of the front plate; c4, the front end face of the front plate; c5, the left end face of the front plate; d1, the upper end surface of the third side plate; d2, the right end face of the third side plate; d3, the front end face of the third side plate; d4, the left end face of the third side plate; d5, the lower end face of the third side plate; e1, the right end face of the first side plate; e2, the upper end face of the first side plate; e3, the front end face of the first side plate; f1, the right end face of the second rear plate; f2, the right end face of the first back plate; f3, the upper end face of the rear plate; f4, the front end face of the rear plate; f5, the left end face of the rear plate; g1, the right end face of the bottom plate; g2, the upper end surface of the bottom plate; g3, the front end face of the bottom plate.

In fig. 8: h1, mounting the rear end face of the base body by the worm; h2, mounting the upper end face of the base body by the worm; h3, mounting the worm on the left end face of the base body.

In fig. 9: i1, the upper end surface of the guide rail seat of the rear brake lining.

In fig. 11: j1, the upper end surface of a guide rail seat of the front brake caliper; j2, the front end surface of the guide rail seat of the front brake caliper; j3, the right end face of the front brake caliper guide rail seat.

In fig. 12: k1, a right end face of the limiting block; k2, the lower end face of the limiting block; k3, the rear end face of the limiting block.

In fig. 15, 16: l1, a first double-side eccentric wheel working surface; l2, the front end surfaces of the eccentric wheels on the two sides; l3, a second double-side eccentric wheel working surface; l4, connecting surfaces of the eccentric wheel and the worm gear; l5, the back end faces of the eccentric wheels at the two sides.

In fig. 17: m1, a worm wheel connecting surface; m2, the front end face of the worm wheel.

In fig. 23 to 25, 27: n1, front end face of a front brake caliper support seat; n2, the upper end face of the front brake caliper support seat; n3, the right end face of the front brake caliper support seat; n4, the rear end face of the front brake caliper support seat; o1, the upper end surface of a guide column of the first front brake caliper; o2, the lower end face of the guide post of the first front brake caliper; p1, the upper end face of a guide column of a second front brake caliper; p2 and the lower end surface of the guide post of the second front brake caliper.

In fig. 27: q1, the rear end face of a first front brake caliper support column; q2, the upper end surface of the first front brake caliper support column; q3, the right end face of the first front brake caliper support column; r1, the rear end face of a support column of a second front brake caliper; r2, the upper end face of a support column of the second front brake caliper; r3, the right end face of a second front brake caliper support column; s1, the rear end face of a front plate of a brake caliper; s2, the upper end face of a front plate of the brake caliper; and S3, the right end face of the front plate of the brake caliper.

In fig. 28 and 29: t1, the upper end face of a first rear brake lining guide post; t2, the lower end face of the first rear brake lining guide post; u1, the upper end surface of a second rear brake lining guide post; u2, the lower end face of a second rear brake lining guide post; v1, the upper end surface of the rear brake lining base; v2, the right end face of the rear brake lining base; v3, the front end surface of the rear brake lining base.

In fig. 33 to 35: w1, the front end face of the rear brake lining fixing seat; w2, the right end face of the rear brake lining fixing seat; w3, the rear end face of the rear brake lining fixing seat.

In fig. 36: x1, the front end face of the rear brake lining; x2, the upper end face of the rear brake lining.

Detailed description of the preferred embodiments

The invention provides a bidirectional reinforcement type electromechanical brake actuator based on bilateral eccentric wheels and worm gears, which is further described in detail by referring to the attached drawings and taking examples in order to make the technical scheme and the effect of the invention clearer and clearer; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 4, the mounting base body of the bidirectional reinforcement type electromechanical brake actuator based on the double-sided eccentric wheel and the worm gear comprises a first side plate (3), a top plate (5), a second side plate (24), a bottom plate (26), a third side plate (33), a rear plate (37) and a front plate (40).

As shown in fig. 1 to 4, the top plate (5), the second side plate (24), and the bottom plate (26) are all rectangular parallelepiped structures.

The left end face of bottom plate (26) and the left end face coplane of second curb plate (24), bottom plate up end (G2) and the lower terminal surface coplane and fixed connection of second curb plate (24), the left end face of bottom plate (26) is on a parallel with bottom plate right-hand member face (G1), the left end face of second curb plate (24) is on a parallel with second curb plate right-hand member face (B1).

The front end surface (D3) of the third side plate is coplanar with the front end surface (G3) of the bottom plate and the front end surface (C4) of the front plate; the rear end face of the third side plate (33) is coplanar with the rear end face of the bottom plate (26) and the rear end face of the rear plate (37); the right end surface (C2) of the first front plate and the left end surface (D4) of the third side plate are coplanar and fixedly connected; the right end face (F2) of the first back plate and the left end face (D4) of the third side plate are coplanar and fixedly connected.

The front end surface (E3) of the first side plate is coplanar with the front end surface (G3) of the bottom plate, the front end surface (D3) of the third side plate and the front end surface (A3) of the top plate; the rear end surface of the first side plate (3) is coplanar with the rear end surface of the bottom plate (26), the rear end surface of the third side plate (33) and the rear end surface of the top plate (5); the front end surface (E3) of the first side plate is parallel to the rear end surface of the first side plate (3); the left end surface of the first side plate (3) and the right end surface (C1) of the second front plate are coplanar and fixedly connected; the left end surface of the first side plate (3) and the right end surface (F1) of the second rear plate are coplanar and fixedly connected; the upper end face (E2) of the first side plate is coplanar with the lower end face of the top plate (5) and is fixedly connected with the lower end face of the first side plate, and an included angle between the right end face (E1) of the first side plate and the upper end face (A2) of the top plate is an obtuse angle.

As shown in fig. 2 and 3, a motor shaft through hole (39) and four motor fixing threaded holes (38) are formed in the right end surface (E1) of the first side plate, the motor fixing threaded holes (38) are used for fixing the motors (1), and the number of the motor fixing threaded holes is not limited to 4.

As shown in fig. 3 and 4, a first right side plate through hole (42) and a second right side plate through hole (45) are formed in the second side plate right end face (B1), the central axes of the first right side plate through hole (42) and the second right side plate through hole (45) are perpendicular to the second side plate right end face (B1), and the planes of the central axes of the first right side plate through hole (42) and the second right side plate through hole (45) are parallel to the second side plate upper end face (B2).

As shown in fig. 1, 9 and 10, the rear brake lining guide rail seat (15) is of a plate-shaped structure, and a first rear brake lining guide rail seat through hole (52) and a second rear brake lining guide rail seat through hole (49) are formed in the upper end surface (I1) of the rear brake lining guide rail seat; a first sealing ring groove (53) and a first dust ring groove (54) are formed in each of the inner parts of the first rear brake lining guide rail seat through holes (52), and the central axes of the first rear brake lining guide rail seat through holes (52), the first sealing ring grooves (53) and the first dust ring grooves (54) are overlapped and perpendicular to the upper end face (I1) of the rear brake lining guide rail seat; and a second sealing ring groove (50) and a second dustproof ring groove (51) are formed in the second rear brake lining guide rail seat through hole (49), and the central axes of the second rear brake lining guide rail seat through hole (49), the second sealing ring groove (50) and the second dustproof ring groove (51) are overlapped and are perpendicular to the upper end surface (I1) of the rear brake lining guide rail seat.

As shown in fig. 3 to 6, a first rotating shaft mounting hole (41) is formed in the front end surface (F4) of the rear plate, a second rotating shaft mounting hole (46) is formed in the rear end surface of the front plate (40), and the central axes of the first rotating shaft mounting hole (41) and the second rotating shaft mounting hole (46) are coincident with each other and perpendicular to the front end surface (F4) of the rear plate.

As shown in fig. 1 and 10, the center axis of the rotary shaft (12) coincides with the center axes of the first rotary shaft mounting hole (41) and the second rotary shaft mounting hole (46), and the rotary shaft (12) is fixed between the first rotary shaft mounting hole (41) and the second rotary shaft mounting hole (46).

As shown in fig. 1, 7, 8 and 10, the worm mounting base (32) is a rectangular parallelepiped, the rear end face (H1) of the worm mounting base is sequentially provided with a second worm bearing mounting hole (48) and a first worm bearing mounting hole (47), the central axis of the first worm bearing mounting hole (47) and the central axis of the second worm bearing mounting hole (48) are coincident, the central axis of the first worm bearing mounting hole (47) is perpendicular to the rear end face (H1) of the worm mounting base and parallel to the upper end face (H2) of the worm mounting base, the radius of the second worm bearing mounting hole (48) is larger than that of the first worm bearing mounting hole (47), the worm bearing (31) is arranged in the second worm bearing mounting hole (48), one end of the second worm bearing is fixed by a shoulder formed by the first worm bearing mounting hole (47) and the second worm bearing mounting hole (48), the other end of the second worm bearing is fixed by the bearing cover (30), and the bearing mounting shaft (59) passes through the first worm bearing mounting hole (47) and is matched with the inner ring of the worm bearing (31); the upper end face (H2) of the worm mounting base body is parallel to the left end face (D4) of the third side plate, the lower end face of the worm mounting base body (32) is overlapped with the left end face (D4) of the third side plate and is fixedly connected with the same, and the rear end face (H1) of the worm mounting base body and the left end face (H3) of the worm mounting base body are perpendicular to the left end face (D4) of the third side plate.

As shown in fig. 11 to 13, a front brake caliper guide rail seat (6), a first limiting block (16) and a second limiting block (57) are fixed on a lower end surface (A4) of the top plate, the front brake caliper guide rail seat (6), the first limiting block (16) and the second limiting block (57) are both of a cuboid structure, an upper end surface (J1) of the front brake caliper guide rail seat, an upper end surface of the first limiting block (16), an upper end surface of the second limiting block (57) and the lower end surface (A4) of the top plate are coplanar, a front end surface (J2) of the front brake caliper guide rail seat is parallel to a right end surface (A1) of the top plate, a front brake caliper guide rail seat through hole (55) and a front brake caliper guide rail seat through hole (56) are arranged on the front brake caliper guide rail seat (J2), a central axis of the front brake caliper guide rail seat through hole (55) and a central axis of the front brake caliper guide rail seat through hole (56) are parallel to each other and perpendicular to the front brake caliper guide rail seat front end surface (J2) of the front brake caliper guide rail seat; the front end surface of the first limiting block (16), the front end surface of the second limiting block (57) and the left end surface of the top plate (5) are coplanar; after assembly, a first limiting block (16) is arranged in a first front brake caliper supporting column through groove (43), a second limiting block (57) is arranged in a second front brake caliper supporting column through groove (44), the left end face and the right end face of the first limiting block (16) are coplanar with the left end face and the right end face of the first front brake caliper supporting column through groove (43) respectively, and the left end face and the right end face of the second limiting block (57) are coplanar with the left end face and the right end face of the second front brake caliper supporting column through groove (44) respectively.

As shown in fig. 15-22, the double-sided eccentric wheel (29) is a symmetrical cylindrical structure, a rotating shaft through hole (60) is arranged on the front end surface (L2) of the double-sided eccentric wheel, the axis of the rotating shaft through hole (60) is perpendicular to the front end surface (L2) of the double-sided eccentric wheel, and the front end surface (L2) of the double-sided eccentric wheel is parallel to the rear end surface (L5) of the double-sided eccentric wheel.

After assembly, the central axes of the rotating shaft (12), the first rotating shaft mounting hole (41), the second rotating shaft mounting hole (46) and the rotating shaft through hole (60) are overlapped.

The worm wheel (34) is fixedly connected with the eccentric wheels (29) on the two sides, and a worm wheel connecting surface (M1) and a worm wheel connecting surface (L4) of the eccentric wheel are coplanar; the center axis of the worm wheel (34) and the center axis of the rotary shaft through hole (60) coincide with each other.

As shown in fig. 1 and 23-27, the brake caliper is composed of a front brake caliper support seat (9), a brake caliper front plate (19), a first front brake caliper support column (11), a second front brake caliper support column (63), a first front brake caliper guide column (8) and a second front brake caliper guide column (61); the brake caliper front plate (19) is of a bilateral symmetry structure, a brake caliper front plate U-shaped groove (64) is formed in the middle of the brake caliper front plate, a front brake lining (20) is fixedly connected with the brake caliper front plate (19) through the brake caliper front plate U-shaped groove (64), and the connection mode is the same as that of a traditional brake caliper.

First front brake caliper guide post (8) and second front brake caliper guide post (61) are the cylinder structure, the external diameter of the two, length is equal, first front brake caliper guide post up end (O1) is on a parallel with first front brake caliper guide post lower terminal surface (O2), second front brake caliper guide post up end (P1) is on a parallel with second front brake caliper guide post lower terminal surface (P2), first front brake caliper guide post lower terminal surface (O2), second front brake caliper guide post lower terminal surface (P2) and front brake caliper support seat front end surface (N1) coplanar, the central axis of first front brake caliper guide post (8) and second front brake caliper guide post (61) is parallel to each other, and perpendicular to front brake caliper support seat front end surface (N1).

As shown in fig. 28 to 30, the first rear brake lining guide post (14) and the second rear brake lining guide post (65) are cylindrical structures, and have equal outer diameter, inner diameter and length, the upper end surface (T1) of the first rear brake lining guide post is parallel to the lower end surface (T2) of the first rear brake lining guide post, the upper end surface (U1) of the second rear brake lining guide post is parallel to the lower end surface (U2) of the second rear brake lining guide post, 6 first rear brake lining guide post bolt holes (67) are uniformly distributed on the upper end surface (T1) of the first rear brake lining guide post, and the number of the first rear brake lining guide post bolt holes (67) is not limited to 6; 6 second rear brake lining guide post bolt holes (66) are uniformly distributed on the upper end face (U1) of the second rear brake lining guide post, and the number of the second rear brake lining guide post bolt holes (66) is not limited to 6.

As shown in fig. 1, 15, 16, 31 and 32, after assembly, the double-sided eccentric (29) is contacted with the second needle bearing (13) through a working surface (L1) of the first double-sided eccentric, and can push the rear brake lining base (28) to move; the double-sided eccentric wheel (29) is contacted with the first needle bearing (10) through a working surface (L3) of the second double-sided eccentric wheel, and can push the front brake caliper support seat (9) to move.

As shown in fig. 1, 9-10 and 30, the central axes of the first rear brake lining guide post (14), the first rear brake lining guide rail seat through hole (52) and the first right side plate through hole (42) coincide with each other, and the first rear brake lining guide post (14) sequentially passes through the first rear brake lining guide rail seat through hole (52) and the first right side plate through hole (42) and is fixedly connected with the rear brake lining installation base plate (22); the central axes of the second rear brake lining guide post (65), the second rear brake lining guide rail seat through hole (49) and the second right side plate through hole (45) are overlapped, and the second rear brake lining guide post (65) sequentially penetrates through the second rear brake lining guide rail seat through hole (49) and the second right side plate through hole (45) and is fixedly connected with the rear brake lining installation bottom plate (22).

The outer parts of the first rear brake lining guide post (14) and the second rear brake lining guide post (65) are respectively sleeved with a rear brake lining return spring (27), the central axes of the two rear brake lining return springs (27) are respectively superposed with the central axes of the first rear brake lining guide post (14) and the second rear brake lining guide post (65), and the rear brake lining return springs (27) are fixed between the rear brake lining guide rail seat (15) and the rear brake lining base (28).

As shown in fig. 1 and 33-35, the rear brake lining mounting base plate (22) is of a cuboid structure, rear brake lining fixing seat bolt holes (69) are arranged on the front end surface (W1) of the rear brake lining fixing seat and correspond to the first rear brake lining guide post bolt holes (67) and the second rear brake lining guide post bolt holes (66) in position one by one, and the rear brake lining fixing seat bolt holes (69) are countersunk bolt holes; the rear brake lining mounting base plate (22) is fixedly connected with the first rear brake lining guide post (14) and the second rear brake lining guide post (65) through a rear brake lining seat fixing bolt (21), a first rear brake lining guide post bolt hole (67), a second rear brake lining guide post bolt hole (66) and a rear brake lining fixing seat bolt hole (69); the rear end face (W3) of the rear brake lining fixing seat is coplanar with the upper end face (T1) of the first rear brake lining guide column and the upper end face (U1) of the second rear brake lining guide column, and the rear end face (W3) of the rear brake lining fixing seat is parallel to the front end face (W1) of the rear brake lining fixing seat.

As shown in fig. 34 to 35, 2 rear brake lining snap seats (70) are symmetrically arranged on the right end surface (W2) of the rear brake lining fixing seat and the left end surface of the rear brake lining mounting base plate (22).

As shown in fig. 36, two rear brake lining fasteners (71) are arranged on the front end surface (X1) of the rear brake lining close to the upper end surface (X2) of the rear brake lining, and the rear brake lining fasteners (71) are matched with the rear brake lining fastener seats (70) to fix the rear brake lining (17).

The invention provides a bidirectional reinforcement type electromechanical brake actuator based on double-side eccentric wheels and worm gears and a working principle as follows.

The process of applying the brake and adjusting the magnitude of the braking force is as follows: when a driver steps on a brake pedal, the motor (1) is electrified, the motor shaft (36) rotates, the worm (35) is driven to rotate through the spline, and the worm (35) drives the double-side eccentric wheel (29) to rotate clockwise around the rotating shaft (12) through the meshing with the worm wheel (34); the double-side eccentric wheel (29) pushes the rear brake lining base (28) to move through the second needle roller bearing (13), and under the supporting and limiting effects of the first rear brake lining guide post (14) and the second rear brake lining guide post (65), the rear brake lining base (28) can only translate along the central axes of the second rear brake lining guide rail seat through hole (49) and the first rear brake lining guide rail seat through hole (52), so that the rear brake lining (17) is driven to move forwards through the rear brake lining mounting base plate (22), and the rear brake lining (17) is pressed to the brake disc (18); meanwhile, the double-side eccentric wheel (29) pushes the front brake caliper support seat (9) to move through the first needle bearing (10), under the supporting and limiting effects of the first front brake caliper guide post (8) and the second front brake caliper guide post (61), the front brake caliper support seat (9) can only move along the horizontal moving of the central axis of the first front brake caliper guide rail seat through hole (55) and the central axis of the second front brake caliper guide rail seat through hole (56), so that the front brake caliper support column (11), the second front brake caliper support column (63) and the brake caliper front plate (19) drive the front brake lining (20) to move backwards, the front brake lining (20) is pressed to the brake disc (18), the front brake lining (20) and the rear brake lining (17) clamp the brake disc (18), and brake pressure is applied to the brake disc (18).

In the process of applying the brake, a driver can control the magnitude of the motor torque output by the motor (1) through the opening degree of the brake pedal, so that the adjustment of the magnitude of the brake force is realized.

The process of canceling the braking force is as follows: when a driver releases a brake pedal, the motor (1) is electrified, the motor shaft (36) rotates, the worm (35) is driven to rotate through the spline, the worm (35) drives the double-side eccentric wheel (29) to rotate anticlockwise around the rotating shaft (12) through meshing with the worm wheel (34), and the double-side eccentric wheel (29) can simultaneously reduce the pressure applied to the front brake caliper supporting seat (9) through the first needle bearing (10) and the pressure applied to the rear brake lining base (28) through the second needle bearing (13); when the pressure applied to the rear brake lining base (28) by the double-sided eccentric wheel (29) is smaller than the elastic force of the rear brake lining return spring (27), under the action of the rear brake lining return spring (27), the rear brake lining base (28) drives the rear brake lining mounting base plate (22) and the rear brake lining (17) to move backwards through the first rear brake lining guide column (14) and the second rear brake lining guide column (65), so that the pressure applied to the brake disc (18) by the rear brake lining (17) is reduced to 0; when the pressure applied to the front brake caliper supporting seat (9) by the double-side eccentric wheel (29) is smaller than the elastic force of the front brake caliper return spring (7), under the action of the front brake caliper return spring (7), the front brake caliper guide rail seat (6) drives the front brake lining (20) to move forwards through the first front brake caliper supporting column (11), the second front brake caliper supporting column (63) and the brake caliper front plate (19), so that the pressure applied to the brake disc (18) by the front brake lining (20) is reduced to 0; under the rotation motion of the brake disc (18), the front brake lining (20) and the rear brake lining (17) are completely separated from the brake disc (18), and finally the brake force is released.

Claims

1. The utility model provides a two-way reinforcement formula electromechanical brake executor based on two side eccentric wheels and worm gear, its characterized in that:

the motor (1) is a rotating motor, and an external spline is arranged on a motor shaft (36);

the mounting base body of the bidirectional reinforcement type electronic mechanical brake actuator based on the double-sided eccentric wheel and the worm gear comprises a first side plate (3), a top plate (5), a second side plate (24), a bottom plate (26), a third side plate (33), a rear plate (37) and a front plate (40);

the top plate (5), the second side plate (24) and the bottom plate (26) are all of cuboid structures;

the left end face of the bottom plate (26) is coplanar with the left end face of the second side plate (24), the upper end face (G2) of the bottom plate is coplanar with the lower end face of the second side plate (24) and fixedly connected with the same, the left end face of the bottom plate (26) is parallel to the right end face (G1) of the bottom plate, and the left end face of the second side plate (24) is parallel to the right end face (B1) of the second side plate;

the front end surface (G3) of the bottom plate and the front end surface (C4) of the front plate are coplanar, the upper end surface (G2) of the bottom plate and the lower end surface of the front plate (40) are coplanar and fixedly connected, the lower end surface of the front plate (40) is parallel to the upper end surface (C3) of the front plate, and the rear end surface of the front plate (40) is parallel to the front end surface (C4) of the front plate;

the rear end face of the bottom plate (26) is coplanar with the rear end face of the rear plate (37), the upper end face (G2) of the bottom plate is coplanar with the lower end face of the rear plate (37) and fixedly connected with the same, the lower end face of the rear plate (37) is parallel to the upper end face (F3) of the rear plate, and the rear end face of the rear plate (37) is parallel to the front end face (F4) of the rear plate;

the front end surface (D3) of the third side plate is coplanar with the front end surface (G3) of the bottom plate and the front end surface (C4) of the front plate; the rear end face of the third side plate (33) is coplanar with the rear end face of the bottom plate (26) and the rear end face of the rear plate (37); the right end surface (C2) of the first front plate and the left end surface (D4) of the third side plate are coplanar and fixedly connected; the right end face (F2) of the first rear plate and the left end face (D4) of the third side plate are coplanar and fixedly connected;

the upper end surface (G2) of the bottom plate and the lower end surface (D5) of the third side plate are coplanar and fixedly connected, the left end surface (D4) of the third side plate and the upper end surface (G2) of the bottom plate form an obtuse angle, and the left end surface (D4) of the third side plate is parallel to the right end surface (D2) of the third side plate; the rear end face of the third side plate (33) is parallel to the front end face (D3) of the third side plate;

the left end face (C5) of the front plate and the left end face of the second side plate (24) are coplanar, the front end face (B3) of the second side plate and the rear end face of the front plate (40) are coplanar and fixedly connected, the left end face of the second side plate (24) is parallel to the right end face (B1) of the second side plate, and the rear end face of the front plate (40) is parallel to the front end face (C4) of the front plate;

the left end surface (F5) of the rear plate is coplanar with the left end surface of the second side plate (24), and the rear end surface of the second side plate (24) is coplanar with the front end surface (F4) of the rear plate and is fixedly connected with the rear plate;

the front end surface (A3) of the top plate and the front end surface (C4) of the front plate are coplanar, and the lower end surface of the top plate (5) and the upper end surface (C3) of the front plate are coplanar and fixedly connected; the left end face of the top plate (5) is coplanar with the left end face of the second side plate (24), and the lower end face of the top plate (5) is coplanar and fixedly connected with the upper end face (B2) of the second side plate; the rear end face of the top plate (5) is coplanar with the rear end face of the rear plate (37), and the lower end face of the top plate (5) is coplanar with and fixedly connected with the upper end face (F3) of the rear plate; the lower end face of the top plate (5) is parallel to the upper end face (A2) of the top plate, the left end face of the second side plate (24) is parallel to the right end face (B1) of the second side plate, and the rear end face of the rear plate (37) is parallel to the front end face (F4) of the rear plate; the right end surface (B1) of the second side plate, the front end surface (C4) of the front plate and the front end surface (F4) of the rear plate are all vertical to the upper end surface (A2) of the top plate;

the front end surface (E3) of the first side plate is coplanar with the front end surface (G3) of the bottom plate, the front end surface (D3) of the third side plate and the front end surface (A3) of the top plate; the rear end surface of the first side plate (3) is coplanar with the rear end surface of the bottom plate (26), the rear end surface of the third side plate (33) and the rear end surface of the top plate (5); the front end surface (E3) of the first side plate is parallel to the rear end surface of the first side plate (3); the left end surface of the first side plate (3) and the right end surface (C1) of the second front plate are coplanar and fixedly connected; the left end surface of the first side plate (3) and the right end surface (F1) of the second rear plate are coplanar and fixedly connected; the upper end surface (E2) of the first side plate and the lower end surface of the top plate (5) are coplanar and fixedly connected, and the right end surface (E1) of the first side plate and the upper end surface (A2) of the top plate form an obtuse angle;

the right end face (D2) of the third side plate is coplanar with the lower end face of the first side plate (3), the upper end face (D1) of the third side plate is coplanar and fixedly connected with the left end face of the first side plate (3), and the right end face (D2) of the third side plate is parallel to the left end face (D4) of the third side plate and is perpendicular to the left end face of the first side plate (3);

a motor shaft through hole (39) and four motor fixing threaded holes (38) are formed in the right end face (E1) of the first side plate, the motor fixing threaded holes (38) are used for fixing the motors (1), and the number of the motor fixing threaded holes is not limited to 4;

the motor (1) is fixedly connected with the first side plate (3) through a motor fixing bolt (2) and a motor fixing threaded hole (38), and the central axis of the motor shaft (36) is superposed with the central axis of the motor shaft through hole (39) and is perpendicular to the right end face (E1) of the first side plate; after passing through the motor shaft through hole (39), the motor shaft (36) is in fit connection with an internal spline in a worm internal spline hole (58) at the end part of the worm (35);

a first right side plate through hole (42) and a second right side plate through hole (45) are formed in the second side plate right end face (B1), the central axes of the first right side plate through hole (42) and the second right side plate through hole (45) are perpendicular to the second side plate right end face (B1), and the planes of the central axes of the first right side plate through hole (42) and the second right side plate through hole (45) are parallel to the second side plate upper end face (B2);

a first front brake caliper support column through groove (43) and a second front brake caliper support column through groove (44) are formed in the upper end surface (B2) of the second side plate, and the bottom surface of the first front brake caliper support column through groove (43) and the bottom surface of the second front brake caliper support column through groove (44) are parallel to the upper end surface (B2) of the second side plate;

the rear brake lining guide rail seat (15) is of a plate-shaped structure, and a first rear brake lining guide rail seat through hole (52) and a second rear brake lining guide rail seat through hole (49) are formed in the upper end surface (I1) of the rear brake lining guide rail seat;

the rear brake lining guide rail seat (15) is fixedly connected with the second side plate (24), the lower end surface of the rear brake lining guide rail seat (15) is coplanar with the right end surface (B1) of the second side plate, and the lower end surface of the rear brake lining guide rail seat (15) is parallel to the upper end surface (I1) of the rear brake lining guide rail seat;

the diameters of the first right side plate through hole (42) and the second right side plate through hole (45) are equal to the diameters of the first rear brake lining guide rail seat through hole (52) and the second rear brake lining guide rail seat through hole (49), after the brake pad is installed, the central axis of the first right side plate through hole (42) is overlapped with the central axis of the first rear brake lining guide rail seat through hole (52), and the central axis of the second right side plate through hole (45) is overlapped with the central axis of the second rear brake lining guide rail seat through hole (49);

a first rotating shaft mounting hole (41) is formed in the front end face (F4) of the rear plate, a second rotating shaft mounting hole (46) is formed in the rear end face of the front plate (40), and the central axes of the first rotating shaft mounting hole (41) and the second rotating shaft mounting hole (46) are overlapped and perpendicular to the front end face (F4) of the rear plate;

the central axis of the rotating shaft (12) is overlapped with the central axes of the first rotating shaft mounting hole (41) and the second rotating shaft mounting hole (46), and the rotating shaft (12) is fixed between the first rotating shaft mounting hole (41) and the second rotating shaft mounting hole (46);

the worm mounting base body (32) is of a cuboid structure, a second worm bearing mounting hole (48) and a first worm bearing mounting hole (47) are sequentially formed in the rear end face (H1) of the worm mounting base body, the central axis of the first worm bearing mounting hole (47) is overlapped with the central axis of the second worm bearing mounting hole (48), the central axis of the first worm bearing mounting hole (47) is perpendicular to the rear end face (H1) of the worm mounting base body and is parallel to the upper end face (H2) of the worm mounting base body, the radius of the second worm bearing mounting hole (48) is larger than that of the first worm bearing mounting hole (47), the worm bearing (31) is arranged in the second worm bearing mounting hole (48), one end of the worm bearing is fixed by a worm convex shoulder formed by the first worm bearing mounting hole (47) and the second worm bearing mounting hole (48), one end of the worm bearing is fixed by a bearing cover (30), and the bearing mounting shaft (59) penetrates through the first worm bearing mounting hole (47) and is matched with the inner ring of the bearing (31); the upper end face (H2) of the worm mounting base body is parallel to the left end face (D4) of the third side plate, the lower end face of the worm mounting base body (32) is overlapped with and fixedly connected with the left end face (D4) of the third side plate, and the rear end face (H1) of the worm mounting base body and the left end face (H3) of the worm mounting base body are perpendicular to the left end face (D4) of the third side plate;

a front brake caliper guide rail seat (6), a first limiting block (16) and a second limiting block (57) are fixed on the lower end face (A4) of the top plate, the front brake caliper guide rail seat (6), the first limiting block (16) and the second limiting block (57) are of cuboid structures, the upper end face (J1) of the front brake caliper guide rail seat, the upper end face of the first limiting block (16) and the upper end face of the second limiting block (57) are coplanar with the lower end face (A4) of the top plate, the front end face (J2) of the front brake caliper guide rail seat is parallel to the right end face (A1) of the top plate, a first front brake caliper guide rail seat through hole (55) and a second front brake caliper guide rail seat through hole (56) are formed in the front end face (J2) of the front brake caliper guide rail seat, the central axis of the first front brake caliper guide rail seat through hole (55) and the central axis of the second front brake caliper guide rail seat through hole (56) are parallel to each other and perpendicular to the front end face (J2) of the front brake caliper guide rail seat; the front end surface of the first limiting block (16), the front end surface of the second limiting block (57) and the left end surface of the top plate (5) are coplanar; after assembly, a first limiting block (16) is arranged in a first front brake caliper support column through groove (43), a second limiting block (57) is arranged in a second front brake caliper support column through groove (44), the left end face and the right end face of the first limiting block (16) are coplanar with the left end face and the right end face of the first front brake caliper support column through groove (43) respectively, and the left end face and the right end face of the second limiting block (57) are coplanar with the left end face and the right end face of the second front brake caliper support column through groove (44) respectively;

the double-sided eccentric wheel (29) is of a symmetrical cylindrical structure, a rotating shaft through hole (60) is formed in the front end face (L2) of the double-sided eccentric wheel, the axis of the rotating shaft through hole (60) is perpendicular to the front end face (L2) of the double-sided eccentric wheel, and the front end face (L2) of the double-sided eccentric wheel is parallel to the rear end face (L5) of the double-sided eccentric wheel;

the central axes of the rotating shaft (12), the first rotating shaft mounting hole (41), the second rotating shaft mounting hole (46) and the rotating shaft through hole (60) are overlapped;

a worm wheel (34) is fixedly connected with the eccentric wheels (29) on the two sides, and a worm wheel connecting surface (M1) and a worm wheel connecting surface (L4) of the eccentric wheel are coplanar; the central axis of the worm wheel (34) and the central axis of the rotating shaft through hole (60) are superposed with each other;

the brake caliper consists of a front brake caliper support seat (9), a brake caliper front plate (19), a first front brake caliper support column (11), a second front brake caliper support column (63), a first front brake caliper guide column (8) and a second front brake caliper guide column (61); the front plate (19) of the brake caliper is in a bilaterally symmetrical structure, a U-shaped groove (64) of the front plate of the brake caliper is arranged in the middle of the front plate of the brake caliper, and the front brake lining (20) is fixedly connected with the front plate (19) of the brake caliper through the U-shaped groove (64) of the front plate of the brake caliper;

the brake caliper front plate (19) is fixedly connected with the front brake caliper support seat (9) through a first front brake caliper support column (11) and a second front brake caliper support column (63); the first front brake caliper support pillar (11), the second front brake caliper support pillar (63) and the front brake caliper support seat (9) are all of cuboid structures; after the brake caliper support seat is installed, the upper end surface (S2) of the brake caliper front plate, the upper end surface (Q2) of the first front brake caliper support column, the upper end surface (R2) of the second front brake caliper support column and the upper end surface (N2) of the front brake caliper support seat are coplanar; the rear end surfaces (Q1, R1) of the first front brake caliper support column and the second front brake caliper support column are coplanar with the rear end surface (N4) of the front brake caliper support seat;

the front end surface of a first front brake caliper support column (11), the front end surface of a second front brake caliper support column (63) and a brake caliper front plate rear end surface (S1) are coplanar, the front end surface of the first front brake caliper support column (11) is parallel to a first front brake caliper support column rear end surface (Q1), and the front end surface of the second front brake caliper support column (63) is parallel to a second front brake caliper support column rear end surface (R1); the left end surface of the first front brake caliper support column (11), the left end surface of the brake caliper front plate (19) and the left end surface of the front brake caliper support seat (9) are coplanar, and the left end surface of the brake caliper front plate (19) is parallel to the right end surface (S3) of the brake caliper front plate; the right end surface (R3) of the support column of the second front brake caliper, the right end surface (S3) of the front plate of the brake caliper and the right end surface (N3) of the support seat of the front brake caliper are coplanar;

the first front brake caliper guide post (8) and the second front brake caliper guide post (61) are of a cylindrical structure, the outer diameters of the first front brake caliper guide post and the second front brake caliper guide post are equal in length, the upper end surface (O1) of the first front brake caliper guide post is parallel to the lower end surface (O2) of the first front brake caliper guide post, the upper end surface (P1) of the second front brake caliper guide post is parallel to the lower end surface (P2) of the second front brake caliper guide post, the lower end surface (O2) of the first front brake caliper guide post, the lower end surface (P2) of the second front brake caliper guide post and the front brake caliper support seat front end surface (N1) are coplanar, the central axes of the first front brake caliper guide post (8) and the second front brake caliper guide post (61) are parallel to each other, and the central axes of the first front brake caliper support seat front end surface (N1) are perpendicular to the front brake caliper support seat;

a first needle bearing mounting groove (62) is formed in the rear end face (N4) of the front brake caliper support seat, the first needle bearing mounting groove (62) is of a rectangular structure, a first needle bearing (10) is fixedly mounted in the first needle bearing mounting groove (62), and a needle of the first needle bearing (10) is perpendicular to the upper end face (N2) of the front brake caliper support seat;

the outer parts of the first front brake caliper guide post (8) and the second front brake caliper guide post (61) are respectively sleeved with a front brake caliper return spring (7), the central axes of the two front brake caliper return springs are respectively superposed with the central axes of the first front brake caliper guide post (8) and the second front brake caliper guide post (61), and the front brake caliper return springs (7) are fixed between the front brake caliper guide rail seat (6) and the front brake caliper support seat (9);

the first front brake caliper support pillar (11) is placed in the first front brake caliper support pillar through groove (43), and the second front brake caliper support pillar (63) is placed in the second front brake caliper support pillar through groove (44);

the first rear brake lining guide post (14) and the second rear brake lining guide post (65) are of cylindrical structures, the outer diameter, the inner diameter and the length of the first rear brake lining guide post and the second rear brake lining guide post are equal, the upper end face (T1) of the first rear brake lining guide post is parallel to the lower end face (T2) of the first rear brake lining guide post, the upper end face (U1) of the second rear brake lining guide post is parallel to the lower end face (U2) of the second rear brake lining guide post, 6 first rear brake lining guide post bolt holes (67) are uniformly distributed in the upper end face (T1) of the first rear brake lining guide post, and the number of the first rear brake lining guide post bolt holes (67) is not limited to 6; 6 second rear brake lining guide post bolt holes (66) are uniformly distributed on the upper end surface (U1) of the second rear brake lining guide post, and the number of the second rear brake lining guide post bolt holes (66) is not limited to 6;

the rear brake lining base (28) is of a cuboid structure, the lower end face of the rear brake lining base (28) is parallel to the upper end face (V1) of the rear brake lining base, a second needle bearing installation groove (68) is formed in the lower end face of the rear brake lining base (28), the second needle bearing installation groove (68) is of a rectangular structure, a second needle bearing (13) is fixedly installed in the second needle bearing installation groove (68), and a needle roller of the second needle bearing (13) is perpendicular to the right end face (V2) of the rear brake lining base;

the first rear brake lining guide column (14) and the second rear brake lining guide column (65) are fixedly connected with the rear brake lining base (28), the lower end face (T2) of the first rear brake lining guide column and the lower end face (U2) of the second rear brake lining guide column are coplanar with the upper end face (V1) of the rear brake lining base, and the central axes of the first rear brake lining guide column (14) and the second rear brake lining guide column (65) are parallel to each other and are vertical to the upper end face (V1) of the rear brake lining base;

the double-sided eccentric wheel (29) is in contact with the second needle bearing (13) through a working surface (L1) of the first double-sided eccentric wheel; the double-sided eccentric wheel (29) is in contact with the first needle bearing (10) through a second double-sided eccentric wheel working surface (L3);

the central axes of the first rear brake lining guide post (14), the first rear brake lining guide rail seat through hole (52) and the first right side plate through hole (42) are overlapped, and the first rear brake lining guide post (14) sequentially passes through the first rear brake lining guide rail seat through hole (52) and the first right side plate through hole (42) and is fixedly connected with the rear brake lining mounting bottom plate (22); the central axes of the second rear brake lining guide post (65), the second rear brake lining guide rail seat through hole (49) and the second right side plate through hole (45) are superposed with each other, and the second rear brake lining guide post (65) sequentially passes through the second rear brake lining guide rail seat through hole (49) and the second right side plate through hole (45) and is fixedly connected with the rear brake lining mounting base plate (22);

a rear brake lining return spring (27) is sleeved outside each of the first rear brake lining guide column (14) and the second rear brake lining guide column (65), the central axes of the two rear brake lining return springs (27) are respectively superposed with the central axes of the first rear brake lining guide column (14) and the second rear brake lining guide column (65), and the rear brake lining return springs (27) are fixed between the rear brake lining guide rail seat (15) and the rear brake lining base (28);

the rear brake lining mounting base plate (22) is of a cuboid structure, rear brake lining fixing base bolt holes (69) are formed in the front end face (W1) of the rear brake lining fixing base and correspond to the first rear brake lining guide column bolt holes (67) and the second rear brake lining guide column bolt holes (66) in position one by one, and the rear brake lining fixing base bolt holes (69) are countersunk bolt holes; the rear brake lining mounting base plate (22) is fixedly connected with the first rear brake lining guide column (14) and the second rear brake lining guide column (65) through a rear brake lining seat fixing bolt (21), a first rear brake lining guide column bolt hole (67), a second rear brake lining guide column bolt hole (66) and a rear brake lining fixing seat bolt hole (69); the rear end face (W3) of the rear brake lining fixing seat is coplanar with the upper end face (T1) of the first rear brake lining guide column and the upper end face (U1) of the second rear brake lining guide column, and the rear end face (W3) of the rear brake lining fixing seat is parallel to the front end face (W1) of the rear brake lining fixing seat.

2. The bidirectional reinforcement type electromechanical brake actuator based on the double-sided eccentric wheel and the worm gear and worm according to claim 1, is characterized in that: a first sealing ring groove (53) and a first dust ring groove (54) are formed in each first rear brake lining guide rail seat through hole (52), and the central axes of the first rear brake lining guide rail seat through hole (52), the first sealing ring groove (53) and the first dust ring groove (54) are overlapped and perpendicular to the upper end face (I1) of the rear brake lining guide rail seat; and a second sealing ring groove (50) and a second dust ring groove (51) are formed in the second rear brake lining guide rail seat through hole (49), the central axes of the second rear brake lining guide rail seat through hole (49), the second sealing ring groove (50) and the second dust ring groove (51) are overlapped, and the second rear brake lining guide rail seat through hole, the second sealing ring groove and the second dust ring groove are perpendicular to the upper end face (I1) of the rear brake lining guide rail seat.

3. The bidirectional reinforcement type electromechanical brake actuator based on the double-sided eccentric wheel and the worm gear and worm according to claim 1, is characterized in that: 2 rear brake lining clamping seats (70) are symmetrically arranged on the right end surface (W2) of the rear brake lining fixing seat and the left end surface of the rear brake lining mounting base plate (22); two rear brake lining buckles (71) are arranged on the front end face (X1) of the rear brake lining and close to the upper end face (X2) of the rear brake lining, and the rear brake lining buckles (71) are matched with the rear brake lining buckle seat (70) to fix the rear brake lining (17).