Electromechanical brake mechanism

Abstract

The utility model belongs to the technical field of brake-by-wire, and discloses an electronic mechanical brake mechanism which comprises a shell, a brake motor, a transmission gear assembly and a first cover body, the brake motor and the transmission gear assembly are both installed in an installation cavity of the shell, and the first cover body is installed at the opening end of the shell. One end, facing the first cover body, of the brake motor is provided with a power connection terminal, the first cover body is provided with a power connection socket, the electric conduction assembly is embedded in the first cover body, one end of the electric conduction assembly is connected with the power connection terminal in an inserted mode, and the other end of the electric conduction assembly extends into the power connection socket so as to be electrically connected with a power supply plug. According to the electronic mechanical braking mechanism, the electric connection is achieved through the electric conduction assembly embedded in the first cover body and the electric connection terminal of the braking motor in an inserted mode, welding construction is not needed, the assembling difficulty is lowered, working hours are reduced, the risk that scaling powder flows into the braking motor is avoided, and the overall reliability is improved.

Description

Technical Field

[0001] This utility model relates to the field of brake-by-wire technology, and in particular to an electromechanical braking mechanism. Background Technology

[0002] With the trend of vehicle electrification, electromechanical braking (EMB) has shown more significant advantages over hydraulic braking (HBB), such as more sensitive response, more energy-efficient and efficient, and can work seamlessly with the motor to achieve efficient energy recovery, converting braking kinetic energy into electrical energy storage and improving driving range. Therefore, electromechanical braking is gradually becoming the development direction.

[0003] Currently, the common power connection scheme for electromechanical braking motors is to connect the motor terminals to external terminals, and then fix the terminals by welding. Since welding is required during installation, the time cost is higher, and there is a risk of flux flowing into the motor.

[0004] Therefore, there is an urgent need for an electromechanical braking mechanism to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide an electromechanical braking mechanism that achieves electrical connection by inserting a conductive component embedded in the first cover into the power terminal of the brake motor. This eliminates the need for welding, reduces assembly difficulty and time, avoids the risk of flux flowing into the brake motor, and improves overall reliability.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An electromechanical braking mechanism is provided, comprising a housing, a brake motor, a transmission gear assembly, and a first cover. The brake motor and the transmission gear assembly are both mounted within a mounting cavity of the housing. The first cover is mounted at the open end of the housing. A power terminal is provided at one end of the brake motor facing the first cover. The first cover has a power connector. The electromechanical braking mechanism further includes:

[0008] A conductive component is embedded in the first cover, one end of which is plugged into the power terminal, and the other end of which extends into the power socket to electrically connect to the power supply plug.

[0009] Preferably, the insertion direction of the power connector is perpendicular to the height direction of the housing.

[0010] Preferably, the conductive component includes:

[0011] A conductive connecting rod is embedded in the first cover. The first end of the conductive connecting rod extends from the inside of the first cover, and the second end of the conductive connecting rod extends into the power socket to electrically connect to the power supply plug.

[0012] A connecting buckle is sleeved on the first end of the conductive connecting rod and the outside of the power receiving terminal. Under the action of the connecting buckle, the conductive connecting rod is pressed against the power receiving terminal.

[0013] Preferably, the first end and the second end of the conductive link are arranged perpendicular to each other, the first end of the conductive link and the power terminal both extend along the height direction of the brake motor, and the extension direction of the second end of the conductive link is perpendicular to the height direction of the brake motor.

[0014] Preferably, the connecting buckle includes a main body, an elastic part, and a stop part. The main body forms a connecting hole for the electric connecting rod and the power receiving terminal to pass through. The elastic part is provided on one side wall of the connecting hole and has a tendency to deform toward the other side wall of the connecting hole to press the electric connecting rod and the power receiving terminal against the other side wall of the connecting hole. The stop part is provided at one end of the main body near the brake motor and is used to limit the installation height of the connecting buckle.

[0015] Preferably, the brake motor has two symmetrically arranged electrical terminals, which are respectively connected to the positive and negative terminals of the brake motor. Two conductive components are symmetrically arranged, and each conductive component is connected to one of the two electrical terminals.

[0016] Preferably, the transmission gear assembly includes:

[0017] Motor gear, mounted on the output shaft of the brake motor;

[0018] A primary gear and a secondary gear, wherein the primary gear meshes with the motor gear, and the secondary gear meshes with the primary gear;

[0019] The planetary gear system has its input end coaxially connected to the secondary gear, and its output end connected to the brake shaft.

[0020] Preferably, the planetary gear system includes:

[0021] The sun gear is coaxially connected to the second-stage gear for transmission.

[0022] Multiple planetary gears mesh with the sun gear;

[0023] A planetary carrier is rotatably mounted on the housing. Multiple planetary gears are rotatably mounted on the planetary carrier via planetary shafts. A brake shaft is mounted on the planetary carrier and is coaxially arranged with the secondary gear.

[0024] Preferably, the secondary gear is integrally injection molded onto the outer periphery of the sun gear; and / or

[0025] The planetary carrier and the brake shaft are integrally formed by injection molding.

[0026] Preferably, the transmission gear assembly further includes:

[0027] A primary gear shaft is fitted into the housing, and the primary gear is rotatably mounted on the primary gear shaft;

[0028] A secondary gear shaft is fitted into the first cover, and the secondary gear is rotatably mounted on the secondary gear shaft.

[0029] The beneficial effects of this utility model are:

[0030] The electromechanical braking mechanism provided by this utility model has the power terminal of the brake motor located at one end facing the first cover, and a conductive component is embedded in the first cover. The outer side of the first cover has a power connector for connecting a power plug. One end of the conductive component is inserted into the power terminal on the inner side of the first cover, and the conductive component is electrically connected to the power plug within the power connector. The power plug can supply power to the brake motor through the conductive component. In summary, the electromechanical braking mechanism provided by this utility model achieves electrical connection by inserting the conductive component embedded in the first cover into the power terminal of the brake motor, eliminating the need for welding, reducing assembly difficulty and time, avoiding the risk of flux flowing into the brake motor, and improving overall reliability. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the electromechanical braking mechanism provided by this utility model;

[0032] Figure 2 This is a top view of the electromechanical braking mechanism provided by this utility model;

[0033] Figure 3 This is a cross-sectional view of the electromechanical braking mechanism provided by this utility model;

[0034] Figure 4 This is an exploded view of the connection structure between the brake motor and the conductive component provided by this utility model;

[0035] Figure 5 This is a schematic diagram of the structure of the conductive component provided by this utility model.

[0036] In the picture:

[0037] 10. Housing; 20. First cover; 201. Power socket; 30. Second cover;

[0038] 1. Brake motor; 101. Electrical terminal; 2. Conductive component; 21. Conductive connecting rod; 211. First end; 212. Second end; 22. Connecting buckle; 221. Main body; 2211. Connecting hole; 222. Elastic part; 223. Stop part; 3. Motor gear; 4. First stage gear; 5. Second stage gear; 6. First stage gear shaft; 7. Second stage gear shaft; 8. Sun gear; 9. Planetary gear; 11. Planet carrier; 12. Planetary shaft; 13. Brake shaft. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] This embodiment provides an electromechanical braking mechanism for outputting power to the brake pads to drive their reciprocating motion. Please refer to... Figures 1-5 The electromechanical braking mechanism includes a housing 10, a brake motor 1, a transmission gear assembly, a first cover 20, and a second cover 30. The housing 10 forms an installation cavity. The brake motor 1 and the transmission gear assembly are both installed in the installation cavity of the housing 10. The first cover 20 is installed at one open end of the housing 10, and the second cover 30 is installed at the other open end of the housing 10 to close the installation cavity of the housing 10. The first cover 20 is the upper cover of the electromechanical braking mechanism, and the second cover 30 is the lower cover of the electromechanical braking mechanism.

[0044] For example, the brake motor 1 is provided with a power terminal 101 at one end facing the first cover 20, the first cover 20 is provided with a power socket 201, and the electromechanical braking mechanism also includes a conductive component 2, which is embedded in the first cover 20. One end of the conductive component 2 is plugged into the power terminal 101, and the other end of the conductive component 2 extends into the power socket 201 to electrically connect to the power supply plug.

[0045] Specifically, in this embodiment, the electromechanical braking mechanism has the power terminal 101 of the brake motor 1 located at one end facing the first cover 20. A conductive component 2 is embedded within the first cover 20. The outer side of the first cover 20 has a power connector 201 for connecting a power supply plug. One end of the conductive component 2 is inserted into the power terminal 101 on the inner side of the first cover 20. The conductive component 2 is electrically connected to the power supply plug within the power connector 201, allowing the power supply plug to supply power to the brake motor 1 via the conductive component 2. In summary, the electromechanical braking mechanism provided in this embodiment achieves electrical connection by inserting the conductive component 2 embedded in the first cover 20 into the power terminal 101 of the brake motor 1. This eliminates the need for welding, reduces assembly difficulty and time, avoids the risk of flux flowing into the brake motor 1, and improves overall reliability.

[0046] For example, please refer to Figures 1-4 Two electrical terminals 101 are symmetrically arranged on the brake motor 1. The two electrical terminals 101 are respectively connected to the positive and negative terminals of the brake motor 1. Two conductive components 2 are symmetrically arranged, and the two conductive components 2 are respectively connected to the two electrical terminals 101 one by one.

[0047] For example, please refer to Figures 1-5 The conductive component 2 includes a conductive link 21 and a connecting buckle 22. The conductive link 21 is made of conductive metal materials such as copper and aluminum, while the connecting buckle 22 is made of insulating materials such as plastic. The conductive link 21 is embedded in the first cover 20. The first end 211 of the conductive link 21 extends from the inside of the first cover 20, and the second end 212 of the conductive link 21 extends into the power socket 201 to electrically connect to the power supply plug. The connecting buckle 22 is sleeved on the first end 211 of the conductive link 21 and the power terminal 101. Under the action of the connecting buckle 22, the conductive link 21 is pressed against the power terminal 101. The setting of the connecting buckle 22 can maintain the electrical connection between the conductive link 21 and the power terminal 101 and improve the structural stability of the electrical connection.

[0048] For example, please refer to Figures 1-3 The insertion direction of the power connector 201 is perpendicular to the height direction of the housing 10, that is, the insertion direction of the power connector 201 is perpendicular to the axis direction of the brake motor 1, so as to optimize the lateral dimension of the overall structure, improve the space utilization, make the electromechanical braking mechanism applicable to a wider range of contour dimensions, and improve versatility.

[0049] Specifically, please refer to Figures 1-5 The first end 211 and the second end 212 of the conductive link 21 are arranged perpendicularly to each other. The first end 211 of the conductive link 21 and the power terminal 101 both extend along the height direction of the brake motor 1. The extension direction of the second end 212 of the conductive link 21 is perpendicular to the height direction of the brake motor 1. Through the irregular design of the conductive link 21, it can flexibly adapt to the insertion direction of the power socket 201.

[0050] For example, please refer to Figure 4 and Figure 5 The connecting buckle 22 includes a main body 221, an elastic part 222, and a stop part 223. The main body 221 forms a connecting hole 2211 through which the power supply link and the power terminal 101 pass. The elastic part 222 is provided on one side wall of the connecting hole 2211 and has a tendency to deform toward the other side wall of the connecting hole 2211 to press the power link and the power terminal 101 against the other side wall of the connecting hole 2211. The stop part 223 is provided at one end of the main body 221 near the brake motor 1 and is used to limit the installation height of the connecting buckle 22.

[0051] For example, the connecting buckle 22 is integrally formed, one end of the elastic part 222 is connected to the main body part 221, and the other end is suspended. In the natural state, the gap between the elastic part 222 and the other side wall of the connecting hole 2211 is less than the sum of the thickness of the power terminal 101 and the thickness of the first end 211 of the conductive link 21. When the power terminal 101 and the first end 211 of the conductive link 21 are inserted between the elastic part 222 and the other side wall of the connecting hole 2211, the elastic part 222 is squeezed and deformed outward. Under its own elastic action, the elastic part 222 has a tendency to press the power terminal 101 and the first end 211 of the conductive link 21 inward to apply an elastic clamping force.

[0052] For example, please refer to Figures 1-4 The transmission gear assembly includes a motor gear 3, a primary gear 4, a secondary gear 5, and a planetary gear system. The motor gear 3 is mounted on the output shaft of the brake motor 1. The primary gear 4 meshes with the motor gear 3 for transmission. The secondary gear 5 meshes with the primary gear 4 for transmission. The input end of the planetary gear system is coaxially connected to the secondary gear 5 for transmission. The output end of the planetary gear system is connected to the brake shaft 13. The brake shaft 13 is connected to the drive screw through a spline fit to switch the rotational power into the linear power of the brake pads.

[0053] For example, please refer to Figures 1-3 The planetary gear system includes a sun gear 8, multiple planetary gears 9, and a planet carrier 11. The sun gear 8 is coaxially connected to the secondary gear 5. Multiple planetary gears 9 are arranged around the outer circumference of the sun gear 8 and are all meshed with it. The planet carrier 11 is rotatably mounted on the housing 10. The multiple planetary gears 9 are rotatably mounted on the planet carrier 11 via planet shafts 12. A brake shaft 13 is mounted on the planet carrier 11 and is coaxially arranged with the secondary gear 5. When the brake motor 1 rotates, it drives the motor gear 3 to rotate synchronously. The motor gear 3 sequentially transmits power to the primary gear 4 and the secondary gear 5. The sun gear 8 and the secondary gear 5 rotate synchronously, driving the multiple planetary gears 9 to rotate on their own axes. Simultaneously, the multiple planetary gears 9 revolve around the axis of the secondary gear 5, driving the planet carrier 11 and the brake shaft 13 to rotate around the axis of the secondary gear 5.

[0054] For example, please refer to Figure 3 The brake shaft 13 extends out of the housing 10 toward the side opposite to the first cover 20, so that the power supply plug and the brake actuator are distributed on different sides of the electromechanical brake mechanism, further optimizing space utilization and improving the overall structural compactness.

[0055] For example, the number of planetary gears 9 can be set to two, three or more.

[0056] For example, the secondary gear 5 is integrally injection molded onto the outer periphery of the sun gear 8 to reduce part costs and improve processing efficiency.

[0057] For example, the planetary carrier 11 and the brake shaft 13 are integrally molded by injection molding to reduce part costs and improve processing efficiency.

[0058] For example, please refer to Figures 1-5 The transmission gear assembly also includes a primary gear shaft 6 and a secondary gear shaft 7. The primary gear shaft 6 is embedded in the housing 10, and the primary gear 4 is rotatably mounted on the primary gear shaft 6. The secondary gear shaft 7 is embedded in the first cover 20, and the secondary gear 5 is rotatably mounted on the secondary gear shaft 7. Specifically, since the secondary gear 5 is integrally formed on the outer periphery of the sun gear 8, it is actually directly rotatably mounted on the secondary gear shaft 7 by the sun gear 8, and the secondary gear 5 is indirectly rotatably mounted on the secondary gear shaft 7.

[0059] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An electromechanical braking mechanism, comprising a housing (10), a brake motor (1), a transmission gear assembly, and a first cover (20), wherein the brake motor (1) and the transmission gear assembly are both mounted in the mounting cavity of the housing (10), and the first cover (20) is mounted at the open end of the housing (10), characterized in that, The brake motor (1) has a power terminal (101) at one end facing the first cover (20), and the first cover (20) has a power socket (201). The electromechanical braking mechanism further includes: A conductive component (2) is embedded in the first cover (20). One end of the conductive component (2) is plugged into the power terminal (101), and the other end of the conductive component (2) extends into the power socket (201) to electrically connect to the power supply plug.

2. The electromechanical braking mechanism according to claim 1, characterized in that, The insertion direction of the power connector (201) is perpendicular to the height direction of the housing (10).

3. The electromechanical braking mechanism according to claim 1, characterized in that, The conductive component (2) includes: A conductive link (21) is embedded in the first cover (20). The first end (211) of the conductive link (21) extends from the inside of the first cover (20), and the second end (212) of the conductive link (21) extends into the power socket (201) to electrically connect to the power supply plug. The connecting buckle (22) is sleeved on the first end (211) of the conductive connecting rod (21) and the power receiving terminal (101). Under the action of the connecting buckle (22), the conductive connecting rod (21) abuts against the power receiving terminal (101).

4. The electromechanical braking mechanism according to claim 3, characterized in that, The conductive link (21) has a first end (211) and a second end (212). The first end (211) of the conductive link (21) and the power terminal (101) both extend along the height direction of the brake motor (1). The extension direction of the second end (212) of the conductive link (21) is perpendicular to the height direction of the brake motor (1).

5. The electromechanical braking mechanism according to claim 3, characterized in that, The connecting buckle (22) includes a main body (221), an elastic part (222), and a stop part (223). The main body (221) forms a connecting hole (2211) through which the electric connecting rod and the power terminal (101) pass. The elastic part (222) is provided on one side wall of the connecting hole (2211). The elastic part (222) has a tendency to deform toward the other side wall of the connecting hole (2211) to press the electric connecting rod and the power terminal (101) against the other side wall of the connecting hole (2211). The stop part (223) is provided at one end of the main body (221) near the brake motor (1) and is used to limit the installation height of the connecting buckle (22).

6. The electromechanical braking mechanism according to any one of claims 1-5, characterized in that, The brake motor (1) is symmetrically provided with two electrical terminals (101), which are respectively connected to the positive and negative terminals of the brake motor (1). There are two conductive components (2) symmetrically provided, which are respectively connected to the two electrical terminals (101).

7. The electromechanical braking mechanism according to any one of claims 1-5, characterized in that, The transmission gear assembly includes: Motor gear (3) is mounted on the output shaft of the brake motor (1); A primary gear (4) and a secondary gear (5), wherein the primary gear (4) meshes with the motor gear (3), and the secondary gear (5) meshes with the primary gear (4); The planetary gear system has its input end coaxially connected to the secondary gear (5), and its output end is connected to the brake shaft (13).

8. The electromechanical braking mechanism according to claim 7, characterized in that, The planetary gear system includes: The sun gear (8) is coaxially connected to the second-stage gear (5); Multiple planetary gears (9) mesh with the sun gear (8); Planetary carrier (11) is rotatably mounted on the housing (10). Multiple planetary gears (9) are rotatably mounted on the planetary carrier (11) via planetary shafts (12). Brake shaft (13) is mounted on the planetary carrier (11) and is coaxially mounted with the secondary gear (5).

9. The electromechanical braking mechanism according to claim 8, characterized in that, The secondary gear (5) is integrally injection molded onto the outer periphery of the sun gear (8); and / or The planetary carrier (11) and the brake shaft (13) are integrally formed by injection molding.

10. The electromechanical braking mechanism according to claim 7, characterized in that, The transmission gear assembly also includes: A primary gear shaft (6) is fitted into the housing (10), and the primary gear (4) is rotatably mounted on the primary gear shaft (6). The secondary gear shaft (7) is embedded in the first cover (20), and the secondary gear (5) is rotatably mounted on the secondary gear shaft (7).

Images