Three-phase connection structure and electromechanical brake device

Abstract

The utility model relates to the technical field of automobile motor provides a three -phase connection structure and electronic mechanical brake device, first terminal is fixed in the shell for with PCB board connection, second terminal is installed in the shell and can slide along the first direction relative to the shell, and second terminal is Z -shaped, including the first connecting section, transition section and second connecting section that connect in proper order, first terminal is fixed in the first connecting section, and second connecting section is provided with the plug, and the plug is used for with the terminal of motor along the first direction and inserts, and the first connecting section and second connecting section are spaced apart in the second direction, and transition section can take place elastic deformation, so that the plug always has the tendency of stretching out to the shell, and the first direction is perpendicular with the second direction. Because second terminal can take place elastic deformation, on the basis of keeping the reliability of terminal and joint connection, guarantee three -phase connection structure can connect PCB board and motor, and when assembling, reduce the mutual influence, improve the reliability of connection and the convenience of assembly.

Description

Technical Field

[0001] This utility model relates to the field of automotive motor technology, and in particular to a three-phase connection structure and an electromechanical braking device. Background Technology

[0002] As the electrification of automotive chassis continues to deepen, the demand for intelligent control of automotive chassis braking is increasing. At present, the actuation structure of chassis brake wheel ends is still mainly based on traditional brake calipers, which generate braking force through hydraulic transmission. However, since traditional brake calipers themselves cannot generate braking force and cannot autonomously control the clamping and release of braking force, they cannot meet the needs of intelligent control. Therefore, the electromechanical braking system (EMB) has emerged.

[0003] Currently, most EMB systems on the market have a controller PCB board and a brushless motor as their power unit. The controller directly controls the rotation of the motor, and the connection between the controller and the three phases of the motor varies. Most of them use three-phase pins to directly solder to the PCB board. However, soldering increases the complexity of assembly, and the relative position of the motor's three-phase pins and the soldering holes on the PCB board is difficult to control. After soldering, there may be stress concentration near the solder joints, and there is a risk of the solder joints falling off during vibration.

[0004] Therefore, there is an urgent need for a three-phase connection structure and an electromechanical braking device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to propose a three-phase connection structure and an electromechanical braking device that can stably connect the motor and the PCB board and simplify the assembly process.

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

[0007] A three-phase connection structure, comprising:

[0008] shell;

[0009] The first terminal is fixed to the aforementioned housing and is used to connect to the PCB board.

[0010] The second terminal is installed inside the housing and can slide relative to the housing in a first direction. The second terminal is Z-shaped and includes a first connecting segment, a transition segment, and a second connecting segment connected in sequence. The first terminal is fixed to the first connecting segment. The second connecting segment is provided with a plug for connecting to the terminal of the motor in the first direction. The first connecting segment and the second connecting segment are spaced apart in a second direction. The transition segment can undergo elastic deformation, so that the plug always tends to extend out of the housing.

[0011] The first direction mentioned above is perpendicular to the second direction mentioned above.

[0012] As a preferred technical solution of the above three-phase connection structure, the housing is provided with a limiting part, the first terminal is formed with a first abutting part, the first abutting part is located outside the housing and abuts against the limiting part along the first direction.

[0013] As a preferred technical solution of the above three-phase connection structure, a sliding groove is provided inside the housing. The length direction of the sliding groove is parallel to the first direction. The sliding groove is included in one side wall of the first direction. The second connecting section of the second terminal is provided with a baffle plate. The baffle plate can undergo elastic deformation. The baffle plate can abut against the side wall in the first direction to limit the distance that the second connecting section retracts into the housing.

[0014] As a preferred technical solution of the above three-phase connection structure, it further includes a guide post, which is fixed to the outer casing. The axial direction of the guide post is parallel to the first direction, and in the first direction, the end of the guide post is at a distance L1 from the top surface of the outer casing, satisfying L1 > L2, where L2 is the distance from the end of the first terminal to the top surface of the outer casing.

[0015] As a preferred technical solution of the above three-phase connection structure, the guide post includes a first post and a second post. The first post and the second post are spaced apart in a direction perpendicular to the first direction. At least one of the first post and the second post can be elastically deformed to change the distance between them. The end of at least one of the first post and the second post has a second abutment portion. The second abutment portion can abut against the PCB board along the first direction on the side of the PCB board facing away from the outer shell.

[0016] An electromechanical braking device includes a PCB board, a motor, and the aforementioned three-phase connection structure. The first terminal is inserted into and fixed to the PCB board, and the second terminal is inserted into the contacts of the motor.

[0017] As a preferred technical solution of the above-mentioned electromechanical braking device, the first terminal is welded and fixed to the PCB board and the top surface of the housing is in close contact with the PCB board.

[0018] As a preferred technical solution of the above-mentioned electromechanical braking device, it further includes a first housing and a second housing, the first housing and the second housing being fastened together to form a receiving cavity, and the PCB board, the motor and the three-phase connection structure being assembled and installed in the receiving cavity.

[0019] As a preferred technical solution of the above-mentioned electromechanical braking device, the PCB board and the second housing are fixed by the first threaded fastener.

[0020] As a preferred technical solution of the above-mentioned electromechanical braking device, the first housing and the second housing are fixed together by a second threaded fastener.

[0021] The beneficial effects of this utility model are:

[0022] This application provides a three-phase connection structure, including a housing, a first terminal, and a second terminal. The first terminal is fixed to the housing and used for connection to a PCB board. The second terminal is installed inside the housing and can slide relative to the housing along a first direction. The second terminal is Z-shaped and includes a first connecting segment, a transition segment, and a second connecting segment connected in sequence. The first terminal is fixed to the first connecting segment. The second connecting segment is provided with a plug for insertion into a motor terminal along the first direction. The first and second connecting segments are spaced apart in a second direction. The transition segment is capable of elastic deformation, so that the plug always tends to extend outward from the housing. The first direction is perpendicular to the second direction.

[0023] For example, the housing has a hollow structure to provide installation space for the first and second terminals. The housing contains a first cavity and a second cavity. The first cavity is formed along a first direction, with one end penetrating the top surface of the housing. The second cavity is formed along the first direction, with one end penetrating the bottom surface of the housing. The first and second cavities are spaced apart in a second direction and are interconnected. One end of the first terminal is inserted into the first cavity and fixed to the housing, while the other end extends from the first cavity to the top surface of the housing for connection to a PCB board. The second terminal is Z-shaped. A first connecting section is located within the first cavity and fixed to the first terminal, while the second connecting section is installed within the second cavity. Within the second cavity, the second connecting section can move relative to the housing along the first direction. The end face of the second connecting section is connected to a connector for mating with motor contacts. The second connecting section communicates with the first connecting section via a transition section.

[0024] Because the first terminal is fixed to the housing, the force generated during insertion into the PCB board can be transmitted to the housing. The first connecting section of the second terminal is fixed to the first terminal, allowing the second terminal to form a movable connection with the housing without completely detaching. The second connecting section of the second terminal and its attached connector can slide relative to the housing in the first direction. When the plug is inserted into the motor terminal in the first direction, the plug receives a reverse force from the terminal. This reverse force is transmitted along the plug and the second connecting section to the transition section, where the transition section undergoes elastic deformation to absorb this force. Furthermore, when there is a positional misalignment between the terminal and the plug, the transition section can also compensate for this assembly error through deformation. While maintaining the reliability of the terminal and connector connection, this ensures that the three-phase connection structure can connect the PCB board and the motor, and reduces mutual interference during assembly, improving connection reliability and ease of assembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the three-phase connection structure (excluding the outer shell) provided in this embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the three-phase connection structure provided in this embodiment of the utility model;

[0027] Figure 3 This is a cross-sectional view of the three-phase connection structure provided in this embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the PCB board structure provided in this embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of the three-phase connection structure and PCB board provided in this embodiment of the utility model;

[0030] Figure 6 yes Figure 5 A sectional view;

[0031] Figure 7 This is a schematic diagram of the three-phase connection structure and the motor provided in this embodiment of the utility model;

[0032] Figure 8 yes Figure 7 A sectional view;

[0033] Figure 9 This is a schematic diagram of the structure of the electromechanical braking device (excluding the first housing and the second housing) provided in an embodiment of this utility model;

[0034] Figure 10 This is an exploded view of the electromechanical braking device provided in this embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the electromechanical braking device provided in an embodiment of this utility model.

[0036] In the picture:

[0037] X, first direction; Y, second direction;

[0038] 100. Three-phase connection structure;

[0039] 110. Outer shell; 111. Limiting part; 112. Slide groove; 113. Top surface;

[0040] 120. First terminal; 121. First abutment portion;

[0041] 130. Second terminal; 131. First connecting section; 132. Transition section; 133. Second connecting section; 134. Plug; 135. Baffle;

[0042] 140. Guide post; 141. First post; 142. Second post; 143. Second abutment part;

[0043] 200. PCB board;

[0044] 300. Electric motor;

[0045] 410. First shell; 420. Second shell;

[0046] 510, First threaded fastener; 520, Second threaded fastener. Detailed Implementation

[0047] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0048] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0050] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0051] like Figures 1 to 8 As shown, this application provides a three-phase connection structure 100, including a housing 110, a first terminal 120, and a second terminal 130. The first terminal 120 is fixed to the housing 110 and is used to connect to a PCB board 200. The second terminal 130 is installed inside the housing 110 and can slide relative to the housing 110 along a first direction X. The second terminal 130 is Z-shaped and includes a first connecting segment 131, a transition segment 132, and a second connecting segment 133 connected sequentially. The first terminal 120 is fixed to the first connecting segment 131. The second connecting segment 133 is provided with a plug 134, which is used to connect to the terminal of a motor 300 along the first direction X. The first connecting segment 131 and the second connecting segment 133 are spaced apart in a second direction Y. The transition segment 132 can undergo elastic deformation, so that the plug 134 always tends to extend outward from the housing 110. The first direction X is perpendicular to the second direction Y.

[0052] For example, the housing 110 has a hollow structure to provide installation space for the first terminal 120 and the second terminal 130. The housing 110 has a first cavity and a second cavity. The first cavity is formed along a first direction X, with one end penetrating the top surface 113 of the housing 110. The second cavity is also formed along the first direction X, with one end penetrating the bottom surface of the housing 110. The first and second cavities are spaced apart in a second direction Y and are interconnected. One end of the first terminal 120 is inserted into the first cavity and fixed to the housing 110, while the other end extends from the first cavity out of the top surface 113 of the housing 110 for connection to the PCB board 200. The second terminal 130 is Z-shaped. A first connecting segment 131 is located in the first cavity and fixed to the first terminal 120, while a second connecting segment 133 is installed in the second cavity. Within the second cavity, the second connecting segment 133 can move relative to the housing 110 along the first direction X. The end face of the second connecting segment 133 is connected to a connector for mating with the contacts of the motor 300. The second connecting segment 133 is connected to the first connecting segment 131 via the transition segment 132.

[0053] Since the first terminal 120 is fixed to the housing 110, when the first terminal 120 is inserted into the PCB board 200, the force generated during insertion can be transmitted to the housing 110. The first connecting section 131 of the second terminal 130 is fixed to the first terminal 120, so that the second terminal 130 and the housing 110 form a movable connection and will not completely detach from the housing. The second connecting section 133 of the second terminal 130 and its attached connector can slide relative to the housing 110 along the first direction X. When the plug 134 is inserted into the terminal of the motor 300 along the first direction X, the plug 134 is subjected to a reverse force from the terminal. This reverse force is transmitted along the plug 134 and the second connecting section 133 to the transition section 132. The transition section 132 undergoes elastic deformation to absorb this force. Furthermore, when there is a positional misalignment between the terminal and the plug 134, the transition section 132 can also compensate for this assembly error through deformation. While maintaining the reliability of the connection between the terminal and the connector, it ensures that the three-phase connection structure 100 can connect the PCB board 200 and the motor 300. During assembly, it reduces mutual interference, improves the reliability of the connection and the ease of assembly.

[0054] Optionally, the housing 110 is provided with a limiting portion 111, and the first terminal 120 is formed with a first abutting portion 121. The first abutting portion 121 is located outside the housing 110 and abuts against the limiting portion 111 along the first direction X.

[0055] For example, a protrusion protruding into the first wall is formed at the opening of the first cavity, which is the limiting part 111. The limiting part 111 includes a first abutting surface facing away from the first cavity along the first direction X and a second abutting surface facing into the first cavity. The first terminal 120 is formed with a first abutting part 121. The first abutting part 121 is located outside the first cavity and abuts against the first abutting surface of the limiting part 111 along the first direction X, so as to limit the first terminal 120 from being pushed into the first cavity by a reverse force when it is inserted into the PCB board 200.

[0056] Optionally, a groove 112 is provided inside the housing 110. The length direction of the groove 112 is parallel to the first direction X. The groove 112 is included in one side wall of the first direction X. The second connecting section 133 of the second terminal 130 is provided with a baffle 135. The baffle 135 can undergo elastic deformation and can abut against the side wall in the first direction X to limit the distance that the second connecting section 133 retracts into the housing 110.

[0057] With this configuration, the side wall of the slide 112 acts as a limit to prevent the second terminal 130 from excessively retracting into the second cavity due to the reverse force when it is plugged into the terminal of the motor 300.

[0058] Furthermore, since the baffle 135 can undergo elastic deformation, when the second terminal 130 is subjected to the reverse force of the motor 300, the elastic deformation of the baffle 135 can also absorb part of the reverse force as a buffer.

[0059] Optionally, the three-phase connection structure 100 further includes a guide post 140, which is fixed to the housing 110. The axial direction of the guide post 140 is parallel to the first direction X, and the end of the guide post 140 is at a distance L1 from the top surface 113 of the housing 110 in the first direction X, satisfying L1 > L2, where L2 is the distance from the end of the first terminal 120 to the top surface 113 of the housing 110.

[0060] Thus, during assembly, the guide post 140 is first inserted into the PCB board 200 to complete the initial positioning between the three-phase connection structure 100 and the PCB board 200. Then, the first terminal 120 is inserted into the PCB board 200 along the first direction X. This facilitates the alignment between the first terminal 120 and the PCB board 200. Furthermore, the guide post 140 can bear part of the tangential force perpendicular to the first direction X for the first terminal 120, preventing the first terminal 120 from bending when it comes into contact with the PCB board 200.

[0061] Optionally, the guide post 140 includes a first post 141 and a second post 142. The first post 141 and the second post 142 are spaced apart in a direction perpendicular to the first direction X. At least one of the first post 141 and the second post 142 can be elastically deformed to change the distance between them. A second abutment portion 143 is formed at the end of at least one of the first post 141 and the second post 142. The second abutment portion 143 can abut against the PCB board 200 along the first direction X on the side of the PCB board 200 facing away from the outer casing 110.

[0062] With this configuration, when the three-phase connection structure 100 is assembled with the PCB board 200, the ends of both the first column 141 and the second column 142 can be partially inserted into the PCB board 200. As the PCB board 200 and the three-phase connection structure 100 approach each other along the first direction X, the first column 141 and the second column 142 move closer to each other, so that both are fully inserted into the PCB board 200. When the second abutment 143 passes through the PCB board 200, the first column 141 and the second column 142 recover their elastic deformation, and the second abutment 143 moves in a direction perpendicular to the first direction X, and then is located on the side of the PCB board 200 facing away from the outer casing 110, abutting the PCB board 200 and preventing the PCB board 200 from detaching from the three-phase connection structure 100.

[0063] like Figures 9 to 11As shown, an electromechanical braking device is also provided, including a PCB board 200, a motor 300 and the above-mentioned three-phase connection structure 100, wherein the first terminal 120 is inserted into and fixed to the PCB board 200, and the second terminal 130 is inserted into the contact of the motor 300.

[0064] Optionally, the first terminal 120 is soldered and fixed to the PCB board 200, and the top surface 113 of the housing 110 is in close contact with the PCB board 200.

[0065] For example, during assembly, the first terminal 120 is inserted into the PCB board 200. When the top surface 113 of the housing 110 is in close contact with the PCB board 200, it is considered to be in place. Then, the first terminal 120 is soldered to the PCB board 200. In this way, the insertion and soldering method can maintain a stable connection between the first terminal 120 and the PCB board 200. Moreover, the close contact between the top surface 113 of the housing 110 and the PCB board 200 also forms a limit, preventing relative movement between the first terminal 120 and the PCB board 200. At the same time, when the second terminal 130 is subjected to the reverse force of the motor 300, the first terminal 120 can transmit the reverse force to the housing 110 and then to the PCB board 200 through the first connecting section 131, thereby preventing relative movement between the first terminal 120 and the housing 110.

[0066] Optionally, the three-phase connection structure 100 also includes a first housing 410 and a second housing 420, which are fastened together to form a receiving cavity. The PCB board 200, the motor 300 and the three-phase connection structure 100 are assembled and installed in the receiving cavity.

[0067] For example, the motor 300 is fixed inside the second housing 420. After the first housing 410 and the second housing 420 are fastened together, a cavity is formed for mounting the PCB board 200, the motor 300 and the three-phase connection structure 100, providing a relatively sealed installation space for the three of them.

[0068] For example, during assembly, the motor 300 is installed inside the second housing 420, the three-phase connection structure 100 and the PCB board 200 form an assembly, the second terminal 130 of the assembly is connected to the terminal of the motor 300, the assembly is then fixed to the second housing 420, and finally the first housing 410 and the second housing 420 are fastened and fixed together.

[0069] Optionally, the PCB board 200 and the second housing 420 are fixed by a first threaded fastener 510.

[0070] For example, the PCB board 200 has a first light hole, the second housing 420 has a first threaded hole, and the first threaded fastener 510 passes through the first light hole, is inserted into the first threaded hole, and is threadedly connected to the second housing 420.

[0071] Optionally, the first housing 410 and the second housing 420 are fixed together by a second threaded fastener 520.

[0072] For example, the first housing 410 has a second light hole, and the second housing 420 has a second threaded hole. The second threaded fastener 520 passes through the second light hole, is inserted into the second threaded hole, and is threadedly connected to the second housing 420.

[0073] 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 other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations 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. A three-phase connection structure, characterized in that, include: Outer shell (110); The first terminal (120) is fixed to the housing (110) and is used to connect to the PCB board (200); The second terminal (130) is installed inside the housing (110) and can slide relative to the housing (110) in a first direction (X). The second terminal (130) is Z-shaped and includes a first connecting segment (131), a transition segment (132), and a second connecting segment (133) connected in sequence. The first terminal (120) is fixed to the first connecting segment (131). The second connecting segment (133) is provided with a plug (134). The plug (134) is used to connect to the terminal of the motor (300) in the first direction (X). The first connecting segment (131) and the second connecting segment (133) are spaced apart in a second direction (Y). The transition segment (132) can undergo elastic deformation, so that the plug (134) always has a tendency to extend outward from the housing (110). The first direction (X) is perpendicular to the second direction (Y).

2. The three-phase connection structure according to claim 1, characterized in that, The outer casing (110) is provided with a limiting part (111), and the first terminal (120) is formed with a first abutting part (121). The first abutting part (121) is located outside the outer casing (110) and abuts against the limiting part (111) along the first direction (X).

3. The three-phase connection structure according to claim 1, characterized in that, The outer casing (110) has a groove (112) inside, the length direction of the groove (112) is parallel to the first direction (X), the groove (112) is included in one side wall of the first direction (X), the second connecting section (133) of the second terminal (130) is provided with a baffle (135), the baffle (135) can undergo elastic deformation, the baffle (135) can abut against the side wall in the first direction (X) to limit the distance that the second connecting section (133) retracts into the outer casing (110).

4. The three-phase connection structure according to claim 1, characterized in that, It also includes a guide post (140), which is fixed to the housing (110). The axial direction of the guide post (140) is parallel to the first direction (X), and the end of the guide post (140) is at a distance L1 from the top surface (113) of the housing (110), satisfying L1 > L2, where L2 is the distance from the end of the first terminal (120) to the top surface (113) of the housing (110).

5. The three-phase connection structure according to claim 4, characterized in that, The guide post (140) includes a first post (141) and a second post (142). The first post (141) and the second post (142) are spaced apart in a direction perpendicular to the first direction (X). At least one of the first post (141) and the second post (142) can elastically deform to change the distance between them. At least one of the first post (141) and the second post (142) has a second abutment portion (143) formed at its end. The second abutment portion (143) can abut against the PCB board (200) along the first direction (X) on the side of the PCB board (200) opposite to the outer shell (110).

6. An electromechanical braking device, characterized in that, The device includes a PCB board (200), a motor (300), and a three-phase connection structure (100) as described in any one of claims 1-5, wherein the first terminal (120) is inserted into and fixed to the PCB board (200), and the second terminal (130) is inserted into the contacts of the motor (300).

7. The electromechanical braking device according to claim 6, characterized in that, The first terminal (120) is welded and fixed to the PCB board (200), and the top surface (113) of the outer shell (110) is in close contact with the PCB board (200).

8. The electromechanical braking device according to claim 6, characterized in that, It also includes a first housing (410) and a second housing (420), the first housing (410) and the second housing (420) being fastened together to form a receiving cavity, and the PCB board (200), the motor (300) and the three-phase connection structure (100) being assembled and installed in the receiving cavity.

9. The electromechanical braking device according to claim 8, characterized in that, The PCB board (200) and the second housing (420) are fixed by a first threaded fastener (510).

10. The electromechanical braking device according to claim 8, characterized in that, The first housing (410) and the second housing (420) are fixed together by a second threaded fastener (520).

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