Power-assisted steering device, steering system and vehicle

Abstract

The utility model provides a power-assisted steering device, a steering system and a vehicle. The power-assisted steering device comprises a motor and an electric control assembly. The electric control assembly comprises a heat conduction seat suitable for conducting heat. The heat conduction base is connected to the end of the motor in the axial direction of the motor. One end of the electric control assembly is electrically connected to the motor. The other end of the electric control assembly is suitable for being electrically connected to a power source and / or a vehicle. According to the utility model, the space occupied by the power-assisted steering device in the axial direction of the motor can be reduced, the miniaturization of the size of the power-assisted steering device in the axial direction of the motor is facilitated, and the power-assisted steering device can be conveniently applied to occasions with limited space.

Description

Technical Field

[0001] The utility model generally relates to the technical field of vehicles, and more specifically relates to a steering assist device, a steering system and a vehicle. Background Art

[0002] The steering assist device is generally assembled on the vehicle chassis. Since the installation space of the chassis is limited, there are relatively high requirements for the integrated design of the motor and the electronic control structure. The steering assist device in the related art includes a motor and an electronic control component. The motor is connected to the electronic control component through an adapter component to integrate the motor and the electronic control component together. However, the adapter component will occupy a certain space in the axial direction of the motor, which is not conducive to applying the steering assist device in occasions with limited space. Summary of the Utility Model

[0003] A series of simplified concepts are introduced in the Summary of the Utility Model section, which will be further described in detail in the Detailed Description section. The Summary of the Utility Model section does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0004] To at least partially solve the above problems, a first aspect of the present utility model provides a steering assist device, which includes:

[0005] A motor; and

[0006] An electronic control component, the electronic control component includes a heat-conducting seat suitable for conducting heat, the heat-conducting seat is connected to the end of the motor along the axial direction of the motor, one end of the electronic control component is electrically connected to the motor, and the other end of the electronic control component is suitable for being electrically connected to a power source and / or a vehicle.

[0007] According to the steering assist device of the first aspect of the present utility model, the electronic control component is axially connected to the motor through the heat-conducting seat. Compared with the related art, there is no need to additionally provide an adapter structure in the axial space between the electronic control component and the motor to realize the connection between the electronic control component and the motor, so as to reduce the space occupied by the steering assist device in the axial direction of the motor, and further facilitate the miniaturization of the size of the steering assist device in the axial direction of the motor, so as to facilitate the application of the steering assist device in occasions with limited space. At the same time, the number of components can also be reduced, which is not only convenient for assembly, but also conducive to cost reduction.

[0008] Optionally, the steering assist device further includes:

[0009] A protective cover, the protective cover is arranged opposite to the motor along the axial direction, the protective cover includes a through hole arranged therethrough, and the other end of the electronic control component passes through the through hole.

[0010] The heat conducting base is located between the protective cover and the motor along the axial direction, and the heat conducting base is connected to the protective cover.

[0011] Optionally, the motor includes phase lines for electrically connecting to the electronic control assembly.

[0012] The electronic control assembly includes an electrical component, a first circuit board, a second circuit board, and a third circuit board that are electrically connected in sequence. The electrical component is connected to the via hole, and a first cavity formed between the electrical component, the protective cover, and the heat conducting base houses the first circuit board. A second cavity is enclosed between the heat conducting base and the motor, and the second cavity houses the phase lines, the second circuit board, and the third circuit board. The first circuit board, the heat conducting base, the second circuit board, and the third circuit board are stacked and arranged in sequence along the axial direction of the motor, and the third circuit board is electrically connected to the phase lines.

[0013] Optionally, a heat conducting member is provided between the second circuit board and the heat conducting base.

[0014] Optionally, the electrical component includes an insulating shell and a first electrical terminal. The insulating shell is sleeved outside the first electrical terminal, and the insulating shell is connected to the via hole.

[0015] The first circuit board is electrically connected to the first electrical terminal.

[0016] The second circuit board includes a second electrical terminal, and the second electrical terminal is electrically connected to the first circuit board and the phase lines.

[0017] Optionally, the electrical component further includes a communication terminal. The insulating shell is sleeved outside the communication terminal, and the communication terminal is electrically connected to the first circuit board.

[0018] Optionally, the electronic control assembly further includes a first communication connector and a second communication connector. The first communication connector is electrically connected to the first circuit board and the third circuit board, and the second communication connector is electrically connected to the second circuit board and the third circuit board.

[0019] Optionally, both the first communication connector and the second communication connector are pin headers.

[0020] Optionally, in a plane perpendicular to the axial direction of the motor, the orthographic projection of the electronic control assembly and the orthographic projection of the protective cover are both completely located inside the orthographic projection of the motor.

[0021] Optionally, the heat conducting base includes a first connecting ear, and the motor includes a second connecting ear. The first connecting ears are arranged corresponding to each other along the axial direction of the motor, and the first connecting ears are adapted to be fixedly connected to the second connecting ears through fasteners.

[0022] Optionally, the electrical component includes at least two first positioning portions, and the first end portion of the heat conducting seat includes at least two second positioning portions, and each of the second positioning portions is positioned and connected to each of the first positioning portions in a one-to-one correspondence; and / or

[0023] the second circuit board includes at least two third positioning portions, and the second end portion of the heat conducting seat includes at least two fourth positioning portions, and each of the fourth positioning portions is positioned and connected to each of the third positioning portions in a one-to-one correspondence; and / or

[0024] the third circuit board includes at least two fifth positioning portions, and the second end portion of the heat conducting seat includes at least two sixth positioning portions, and each of the sixth positioning portions is positioned and connected to each of the fifth positioning portions in a one-to-one correspondence.

[0025] Optionally, the electrical component is fastened and connected to the heat conducting seat; and / or

[0026] the second circuit board is fastened and connected to the heat conducting seat; and / or

[0027] the third circuit board is fastened and connected to the heat conducting seat; and / or

[0028] the motor is fastened and connected to the heat conducting seat.

[0029] Optionally, the heat conducting seat is press-fitted to the motor; or

[0030] the heat conducting seat is in interference fit with the motor.

[0031] In a second aspect of the present invention, a steering system is provided, and the steering system includes the above-mentioned steering assist device.

[0032] According to the steering system of the second aspect of the present invention, by applying the above-mentioned steering assist device, it is beneficial to improve the structural compactness of the steering system and optimize the space layout, thereby reducing the occupied space, and further being applicable to occasions with limited space.

[0033] In a third aspect of the present invention, a vehicle is provided, and the vehicle includes the above-mentioned steering assist device.

[0034] According to the vehicle of the third aspect of the present invention, by applying the above-mentioned steering assist device or the above-mentioned steering system, it helps to optimize the space layout and improve the structural compactness of the vehicle, and is also beneficial to reducing costs. Description of the Drawings

[0035] The following drawings of the embodiments of the present invention are hereby taken as a part of the present invention for understanding the present invention. The embodiments and descriptions thereof of the present invention are shown in the drawings to explain the principles of the present invention. In the drawings,

[0036] Figure 1 Stereoscopic view of a steering assist device according to a preferred embodiment of the present utility model;

[0037] Figure 2 is Figure 1 Exploded stereoscopic view of the steering assist device shown;

[0038] Figure 3 is Figure 1 Front view of one end of the steering assist device shown;

[0039] Figure 4 is Figure 2 Stereoscopic view of the electronic control component in ;

[0040] Figure 5 is Figure 4 Exploded stereoscopic view of the electronic control component shown;

[0041] Figure 6 is Figure 4 Cross-sectional view of the electronic control component shown;

[0042] Figure 7 is Figure 5 Stereoscopic view of the electrical component in ;

[0043] Figure 8 is Figure 7 Exploded stereoscopic view of the electrical component shown;

[0044] Figure 9 is Figure 1 Stereoscopic view of the steering assist device in in a state where the protective cover is not installed;

[0045] Figure 10 is Figure 8 Exploded stereoscopic view of the insulating housing, the first electrical terminal, the vehicle interaction terminal, and the position sensor input terminal in ;

[0046] Figure 11 is Figure 1 Front view of one end of the heat conducting base in ; and

[0047] Figure 12 is Figure 1 Front view of the other end of the heat conducting base in .

[0048] Explanation of reference numerals:

[0049] 100: Steering assist device 110: Motor

[0050] 111: Phase wire 112: Second connecting ear

[0051] 120: Protective cover 121: Through hole

[0052] 130: Electric control component 131: Heat conducting base

[0053] 131a: First connecting ear 131b: First end

[0054] 131c: Second end 131d: Second positioning part

[0055] 131e: Fourth positioning part 131f: Sixth positioning part

[0056] 131g: First connecting hole 131h: Second connecting hole

[0057] 131i: Second connecting hole 132: Electrical component

[0058] 132a: Insulating shell 132a1: Power input jack

[0059] 132a2: Vehicle interaction jack 132a3: Sensing communication jack

[0060] 132b: First electrical terminal 132c: Communication terminal

[0061] 132d: Vehicle interaction terminal 132e: Position sensor input terminal

[0062] 133: First circuit board 133a: First communication connector

[0063] 134: Second circuit board 134a: Second electrical terminal

[0064] 134b: Second communication connector 135: Third circuit board

[0065] 136: First glue groove 137: Second glue groove

[0066] D: Axial direction Detailed implementation manners

[0067] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the embodiments of the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present utility model, some well-known technical features in the art are not described.

[0068] In order to thoroughly understand the embodiments of the present utility model, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present utility model is not limited to the specific details familiar to those skilled in the art.

[0069] It should be understood that the purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present utility model. The singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. When the terms "comprise" and / or "include" are used in this specification, they specify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0070] The ordinal numbers such as "first" and "second" cited in the present utility model are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and similar expressions used in the present utility model are only for the purpose of illustration and are not limitations.

[0071] The "parallel" / "perpendicular" and similar expressions used in the present utility model include absolute parallel / perpendicular relationships and substantially parallel / perpendicular relationships (for example, relationships that deviate from absolute parallel / perpendicular by within the range of -5° to +5°), and can achieve equivalent effects.

[0072] Hereinafter, specific embodiments of the present utility model will be described in more detail with reference to the accompanying drawings, which show representative embodiments of the present utility model and do not limit the present utility model.

[0073] An embodiment of the present utility model provides a power steering device, a steering system and a vehicle (not shown) having the power steering device.

[0074] As Figures 1 to 12 shown, an embodiment of the present utility model first provides a power steering device 100. The power steering device 100 according to an embodiment of the present utility model may include a motor 110 and an electronic control assembly 130. The electronic control assembly 130 may include a heat conducting seat 131 adapted to conduct heat. The heat conducting seat 131 is connected to an end of the motor 110 along the axial direction D of the motor 110. That is, the heat conducting seat 131 is connected to the end of the axial direction D of the motor 110. The heat conducting seat 131 is hermetically connected to the motor 110. One end of the electronic control assembly 130 is electrically connected to the motor 110. The other end of the electronic control assembly 130 is adapted to be electrically connected to a power source and / or the vehicle. The electronic control assembly 130 is connected to the power source to supply electrical energy through the power source. The electronic control assembly 130 may be connected to a vehicle, such as a control device of the vehicle, to communicate with the control device. It can be understood that the power source may be an independently provided power source or the vehicle's own power source.

[0075] According to the power steering device of the utility model, the electric control component 130 is connected to the motor 110 in the axial direction D through the heat-conducting seat 131, and the heat-conducting seat 131 is a part of the electric control component 130. Compared with the related art, the embodiment of the utility model does not need to add an additional adapter structure in the axial direction D between the electric control component 130 and the motor 110 to achieve the connection between the electric control component 130 and the motor 110, so that the space occupied by the power steering device in the axial direction D of the motor 110 can be reduced, which is conducive to miniaturization of the size of the power steering device in the axial direction D of the motor 110, so as to facilitate the application of the power steering device in space-limited occasions. At the same time, the number of parts can be reduced, which is not only convenient for assembly, but also conducive to reducing costs. Since the heat-conducting seat 131 can conduct heat, the electric control component 130 here can conduct heat and dissipate heat through the heat-conducting seat 131.

[0076] Further, the power steering device 100 according to the embodiment of the utility model may also include a protective cover 120. The protective cover 120 is arranged opposite to the motor 110 along the axial direction D. The protective cover 120 includes a through hole 121 arranged therethrough. The other end of the electric control component 130 is passed through the through hole 121. The thermally conductive seat 131 is located between the protective cover 120 and the motor 110 along the axial direction D. The thermally conductive seat 131 is connected to the protective cover 120. By providing the protective cover 120, the part of the electric control component 130 located at the thermally conductive seat 131 away from the motor 110 can be accommodated and shielded. Optionally, the protective cover 120 can be made of an insulating material such as plastic to achieve the purpose of insulation protection.

[0077] See also Figures 2 to 9, for example, the electric motor 110 may include a phase wire 111 for electrically connecting to the electric control component 130. The electric control component 130 may include an electrical component 132, a first circuit board 133, a second circuit board 134, and a third circuit board 135 that are electrically connected in sequence. The electrical component 132 is hermetically connected to the via hole 121 to save the external space occupied by the electrical component 132 with respect to the protective cover 120. A first cavity formed between the electrical component 132, the protective cover 120, and the heat conducting base 131 accommodates the first circuit board 133. That is, the first circuit board 133 is arranged in the first cavity enclosed by the electrical component 132, the protective cover 120, and the heat conducting base 131. The first circuit board 133 may also be referred to as a power board. A second cavity is formed by enclosing between the heat conducting base 131 and the electric motor 110. The second cavity accommodates the phase wire 111, the second circuit board 134, and the third circuit board 135. The first circuit board 133, the heat conducting base 131, the second circuit board 134, and the third circuit board 135 are stacked and arranged in sequence along the axial direction D of the electric motor 110. The second circuit board 134 may also be referred to as a power board. The third circuit board 135 may also be referred to as an electric control board. The third circuit board 135 is electrically connected to the phase wire 111. This helps to reduce the space occupied by the phase wire 111, the second circuit board 134, and the third circuit board 135, and improves the structural compactness of the electric control component 130 in the axial direction D.

[0078] Optionally, a heat conducting member (not shown) is provided between the second circuit board 134 and the heat conducting base 131. In this way, the heat of the second circuit board 134 can be conducted to the heat conducting base 131 via the heat conducting member, and then heat dissipation can be performed through the heat conducting base 131.

[0079] Further optionally, the heat conducting member may be made of heat conducting silicone grease.

[0080] Referring to Figure 3 and Figure 10 , optionally, the electrical component 132 may include an insulating shell 132a and a first electrical terminal 132b. The insulating shell 132a is sleeved outside the first electrical terminal 132b. The insulating shell 132a is hermetically connected to the via hole 121. The first circuit board 133 is electrically connected to the first electrical terminal 132b, for example, by soldering. The second circuit board 134 includes a second electrical terminal 134a. The second electrical terminal 134a is electrically connected to the first circuit board 133 and the phase wire 111. This can supply power to the electric motor 110.

[0081] Optionally, the insulating shell 132a may be wrapped around a part of the first electrical terminal 132b by injection molding.

[0082] Continuing to refer to Figure 3 and Figure 10, in addition, the electrical component 132 may further include a communication terminal 132c. An insulating housing 132a is sleeved outside the communication terminal 132c to achieve the purpose of insulating and protecting the communication terminal 132c. The communication terminal 132c is electrically connected to the first circuit board 133. The electronic control assembly 130 may further include a first communication connector 133a and a second communication connector 134b. The first communication connector 133a is electrically connected to the first circuit board 133 and the third circuit board 135 so that the first circuit board 133 and the third circuit board 135 can communicate. The first communication connector 133a is connected to the third circuit board 135 through the heat conducting seat 131 and the second circuit board 134, which is beneficial to simplifying the circuit structure and saving materials. The second communication connector 134b is electrically connected to the second circuit board 134 and the third circuit board 135 so that the second circuit board 134 and the third circuit board 135 can communicate.

[0083] Refer to Figures 5 to 8 , optionally, the communication terminal 132c is welded to the first circuit board 133. The first communication connector 133a is welded to the first circuit board 133 and the third circuit board 135. The second communication connector 134b is welded to the second circuit board 134 and the third circuit board 135. This further simplifies the circuit structure, saves cables and space occupation, and the electrical connection is more reliable.

[0084] Optionally, both the first communication connector 133a and the second communication connector 134b are pin headers. This can replace the cables, reduce the space occupation, and the electrical connection is more reliable and the cost is lower.

[0085] Furthermore, in a plane perpendicular to the axial direction D of the motor 110, the orthographic projections of the electronic control assembly 130 and the protective cover 120 are both completely located inside the orthographic projection of the motor 110. That is, the electronic control assembly 130 does not protrude radially from the outer peripheral surface of the motor 110, thereby improving the radial structural compactness of the electronic control assembly 130.

[0086] Optionally, the heat conducting seat 131 is a metal seat such as an aluminum seat to improve the heat conduction and heat dissipation efficiency.

[0087] In other examples, the pin welding scheme in the second circuit board 134 and the first circuit board 133 can be changed to a fish-eye terminal press-fitting scheme, and the other assembly sequences remain unchanged.

[0088] Refer to Figures 1 to 6 , Figure 9 , Figure 11 and Figure 12, in an optional example, the heat-conducting base 131 may include a first connecting lug 131a. The motor 110 may include a second connecting lug 112. The first connecting lug 131a is correspondingly arranged in the axial direction D of the motor 110. The first connecting lug 131a is adapted to be fixedly connected to the second connecting lug 112 through a fastener. That is, the first connecting lug 131a is fixedly connected to the second connecting lug 112 through a fastener such as a bolt, so as to fasten the electronic control component 130 to the motor 110.

[0089] In other examples, the heat-conducting base 131 and the motor 110 may be fixed by means of bonding or the like. Structures such as connecting lugs adapted to connect fasteners may not be provided. That is, the step of fastening with bolts after the press-fitting of the electronic control component 130 is cancelled, and related structures such as the first connecting lug 131a and the second connecting lug 112 for bolt assembly are cancelled.

[0090] Referring to Figure 5 , Figure 6 , Figure 11 and Figure 12 , for example, the electrical component 132 may include at least two first positioning portions (not shown). The first end portion 131b of the heat-conducting base 131 may include at least two second positioning portions 131d. Each of the second positioning portions 131d is positioned and connected to each of the first positioning portions in a one-to-one correspondence. This facilitates the positioning of the electrical component 132 and the heat-conducting base 131.

[0091] Optionally, the second positioning portion 131d is a positioning hole. Correspondingly, the first positioning portion is a positioning post.

[0092] Continuing to refer to Figure 5 , Figure 6 , Figure 11 and Figure 12 , for example, the second circuit board 134 may include at least two third positioning portions (not shown). The second end portion 131c of the heat-conducting base 131 may include at least two fourth positioning portions 131e. Each of the fourth positioning portions 131e is positioned and connected to each of the third positioning portions in a one-to-one correspondence. This facilitates the positioning of the second circuit board 134 and the heat-conducting base 131.

[0093] Optionally, the fourth positioning portion 131e is a positioning hole. Correspondingly, the third positioning portion is a positioning post.

[0094] Referring again to Figure 5 , Figure 6 , Figure 11 and Figure 12, for example, the third circuit board 135 may include at least two fifth positioning portions (not shown). The second end portion 131c of the heat conducting base 131 includes at least two sixth positioning portions 131f. Each of the sixth positioning portions 131f is positioned and connected to each of the fifth positioning portions in a one-to-one correspondence. This facilitates the positioning of the third circuit board 135 and the heat conducting base 131.

[0095] Optionally, the sixth positioning portion 131f is a positioning post. Correspondingly, the fifth positioning portion is a positioning hole.

[0096] Referring again to Figure 5 , Figure 6 , Figure 11 and Figure 12 , for example, the electrical component 132 is fixedly connected to the heat conducting base 131. Optionally, four first connection holes 131g are provided on one side of the heat conducting base 131 facing the electrical component 132. The electrical component 132 is fastened to the heat conducting base 131 by screws at the four first connection holes 131g.

[0097] Referring again to Figure 5 , Figure 6 , Figure 11 and Figure 12 , for example, the second circuit board 134 is fixedly connected to the heat conducting base 131. Optionally, four second connection holes 131h are provided on one side of the heat conducting base 131 facing the second circuit board 134. The second circuit board 134 is fastened to the heat conducting base 131 by screws at the four second connection holes 131h.

[0098] Referring again to Figure 5 , Figure 6 , Figure 11 and Figure 12 , for example, the third circuit board 135 is fixedly connected to the heat conducting base 131. Optionally, four third connection holes 131i are provided on one side of the heat conducting base 131 facing the third circuit board 135. The third circuit board 135 is fastened to the heat conducting base 131 by screws at the four third connection holes 131i.

[0099] Optionally, the heat conducting base 131 is press-fitted to the motor 110. In this way, the structure is simpler, the number of components can be reduced, the assembly process can be simplified, and the assembly efficiency can be improved.

[0100] Optionally, the heat conducting base 131 is in interference fit with the motor 110. The interference fit can enhance the connection structure strength between the heat conducting base 131 and the motor 110 to prevent the two from separating, thereby contributing to improving the reliability of the power steering device 100.

[0101] Referring to Figures 1 to 10, optionally, the steering assist device 100 may further include a vehicle interaction terminal 132d and a position sensor input terminal 132e. The vehicle interaction terminal 132d and the position sensor input terminal 132e form the communication terminal 132c described above. The vehicle interaction terminal 132d is used to connect to a control device of the vehicle, such as an Electronic Control Unit (ECU for short), to achieve communication purposes. The position sensor input terminal 132e is used to connect to a corresponding position sensor (not shown) to receive the position information detected by the position sensor and send it to the third circuit board 135.

[0102] Refer to Figure 9 , optionally, the steering assist device may include a first glue groove 136 and a second glue groove 137. The first glue groove 136 is provided on the end face of the insulating housing 132a away from the motor 110. The second glue groove 137 is located between the heat conducting base 131 of the electronic control assembly 130 and the electrical component 132. The first glue groove 136 and the second glue groove 137 are each used for coating adhesives such as glue to fixedly connect and seal the electronic control assembly 130 and the protective cover 120.

[0103] The steering assist device according to the embodiment of the present utility model adopts a highly integrated design. Among them, the parts of the electronic control module are arranged radially as a whole, rather than the layout form of stacking electrical parts layer by layer in sequence at one end of the motor like traditional steering assist devices. This not only greatly reduces the axial length of the steering assist device, but also enhances the overall strength of the steering assist device. This steering assist device adopts an integrated assembly scheme design. The electronic control assembly can be directly and integrally fastened to the motor through a pressing device to complete the assembly of the electronic control assembly on the motor, which is simple, convenient and efficient. The electronic control assembly uses a total of three circuit boards, namely the first circuit board, the second circuit board and the third circuit board, for electrical wiring, rather than using other physical hard wires for electrical connection. Therefore, it can greatly reduce the number of parts and simplify the assembly process, while also reducing the volume of the product, improving the compactness and reliability of the product. Compared with other complex motor and electronic control integrated design schemes, the steering assist device of the present utility model has fewer parts and a simple assembly process, and has a great cost advantage in production.

[0104] In this embodiment, the motor is a three-phase permanent magnet synchronous motor. The three-phase permanent magnet synchronous motor includes parts such as a motor housing (not marked), a stator-rotor (not shown), an output shaft (not shown), and magnetic poles (not shown). The phase wires include three-phase enameled wires and plastic-coated three-phase copper row terminals. The three-phase enameled wires are welded to the plastic-coated three-phase copper row terminals. The plastic-coated three-phase copper row is fixed inside the motor housing. The phase wires are used to connect to the second electrical terminals 134a of the second circuit board 134 of the electronic control assembly 130, for example, by welding.

[0105] Refer to Figures 1 to 12, the assembly method of the power steering device 100 according to an embodiment of the present invention may be as follows: The electronic control component 130 is press-fitted and fixed to the motor 110 through a press-fitting device, and is further fastened by three M6 bolts. After fastening, the phase wires of the motor 110 are in close contact with the second electrical terminals of the electronic control component 130, and then the phase wires and the second electrical terminals are welded and fused by resistance welding. After welding, after applying a sealing and fastening adhesive to the heat-conducting seat 131 and the insulating shell 132a respectively, the protective cover 120 is covered on one end of the electronic control component 130 away from the electrode 110, so that a part of the insulating shell 132a of the electronic control component 130 penetrates through the through hole 121 of the protective cover 120, and the electronic control component 130 is bonded to the insulating shell 132a through the fastening adhesive. Thus, the assembly of the power steering device is completed.

[0106] Continue to refer to Figures 1 to 12 , further, the assembly method of the electronic control component 130 according to an embodiment of the present invention may be as follows: The electronic control component 130 may include an electrical component 132, a heat-conducting seat 131, a second circuit board 134, and a third circuit board 135. Among them, the second electrical terminal 134a, the second communication connector 134b, and other power electronic devices are welded on the second circuit board 134. Among them, the second communication connector 134b is a row of pins. The entire second circuit board 134 is fixed to the heat-conducting seat 131 by two-point positioning and screws. A heat-conducting silicone grease is applied between the second circuit board 134 and the heat-conducting seat 131 for conducting the heat of the second circuit board 134 to the metal heat-conducting seat 131. After the second circuit board 134 is fixed, the electrical component 132 is installed at the other end of the heat-conducting seat 131 by two-point positioning and screws, and clearance is designed at relevant positions. Among them, the position sensor input terminal 132e of the electrical component 132 is welded to the corresponding part of the second circuit board 134, and clearance is designed at the corresponding position of the first circuit board 133. After the electrical component 132, the heat-conducting seat 131, and the second circuit board 134 are assembled and welded, the third circuit board 135 is installed on the heat-conducting seat 131 by two-point positioning and screws. The second communication connector 134b of the second circuit board 134 and the first communication connector 133a of the electrical component 132 are respectively welded to the corresponding parts of the third circuit board 135. Among them, the first communication connector 133a of the electrical component 132 is another row of pins. The length of the other row of pins in the axial direction of the motor 110 is greater than that of the row of pins serving as the second communication connector 134b. Thus, the assembly of the electronic control component 130 is completed.

[0107] Among them, the electrical component 132 may include an insulating case 132a and a first circuit board 133. The insulating case 132a is assembled and welded with the first circuit board 133. A first electrical terminal 132b is inserted and connected through the power input jack 132a1. The first electrical terminal 132b is welded to the first circuit board 132. A vehicle interaction terminal 132d is inserted through the vehicle interaction jack 132a2. The vehicle interaction terminal 132d is welded to the first circuit board 133. A position sensor input terminal 132e is inserted through the sensing communication jack 132a3.

[0108] Among them, the electrical component 132 is positioned at one end of the heat conduction seat 131 through two second positioning parts 131d, and is fastened to the heat conduction seat 131 by screws at four first connection holes 131g. The second circuit board 134 is positioned at the other end of the heat conduction seat 131 through two fourth positioning parts 131e, and is fastened to the heat conduction seat 131 by screws at four second connection holes 131h. The third circuit board 135 is positioned on one side of the second circuit board 134 through two sixth positioning parts 131f on the heat conduction seat 131, and is fastened to the heat conduction seat 131 by screws at four third connection holes 131i. The electrical component 132 is installed at one end of the heat conduction seat 131 along the axial direction D of the motor 110. The second circuit board 134 and the third circuit board 135 are installed at the other end of the heat conduction seat along the axial direction D of the motor 110.

[0109] In other examples, the plastic-coated metal terminals in the motor 110 can be cancelled, and copper wires are directly led out from the windings of the motor 110 and resistance welded to the second electrical terminals 134a in the electronic control component 130.

[0110] An embodiment of the present invention can also provide a steering system (not shown). The steering system may include the above-mentioned steering assist device 100. According to the steering system of the embodiment of the present invention, by applying the above-mentioned steering assist device, it helps to improve the compactness of the structure of the steering system, thereby reducing the occupied space, and further being applicable to occasions with limited space.

[0111] An embodiment of the present invention also provides a vehicle (not shown). The vehicle may include the above-mentioned steering assist device 100, or the above-mentioned steering system.

[0112] According to the vehicle of the embodiment of the present invention, by applying the above-mentioned steering assist device, it helps to optimize the space layout and improve the compactness of the vehicle structure, and is also beneficial to reducing costs.

[0113] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as commonly understood by those of ordinary skill in the technical field of the present utility model. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. Terms such as "arranged" that appear herein can mean either that one component is directly attached to another component or that one component is attached to another component through an intermediate member. Features described in one embodiment herein can be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise stated in that other embodiment.

[0114] The present utility model has been described through the above embodiments. However, it should be understood that the above embodiments are only for the purpose of illustration and example, and are not intended to limit the present utility model within the scope of the described embodiments. Those skilled in the art can understand that according to the teachings of the present utility model, more variations and modifications can be made, and these variations and modifications all fall within the scope of protection required by the present utility model.

Claims

1. A power steering device (100), characterized in that: The steering assist device (100) comprises: a motor (110); and An electric control component (130), the electric control component (130) comprising a heat-conducting seat (131) suitable for conducting heat, the heat-conducting seat (131) being connected to the end of the motor (110) along the axial direction (D) of the motor (110), one end of the electric control component (130) being electrically connected to the motor (110), and the other end of the electric control component (130) being suitable for being electrically connected to a power source and / or a vehicle.

2. The power steering device (100) according to claim 1, characterized in that: The steering assist device (100) further comprises: a protective cover (120), the protective cover (120) being arranged opposite to the motor (110) along the axial direction (D), the protective cover (120) comprising a through hole (121) extending therethrough, the other end of the electric control component (130) being passed through the through hole (121), The heat-conducting seat (131) is located between the protective cover (120) and the motor (110) along the axial direction (D), and the heat-conducting seat (131) is connected to the protective cover (120).

3. The power steering device (100) according to claim 2, characterized in that: The motor (110) comprises a phase line (111) for electrically connecting to the electric control component (130). The electric control component (130) comprises an electric component (132), a first circuit board (133), a second circuit board (134) and a third circuit board (135) which are electrically connected in sequence, the electric component (132) being connected to the through hole (121), a first cavity formed between the electric component (132), the protective cover (120) and the heat-conducting seat (131) accommodating the first circuit board (133), a second cavity is formed between the heat-conducting seat (131) and the motor (110), the second cavity accommodating the phase line (111), the second circuit board (134) and the third circuit board (135), the first circuit board (133), the heat-conducting seat (131), the second circuit board (134) and the third circuit board (135) being stacked in sequence along the axial direction (D) of the motor (110), and the third circuit board (135) being electrically connected to the phase line (111).

4. The power steering device (100) according to claim 3, characterized in that: A heat conducting member is provided between the second circuit board (134) and the heat conducting seat (131).

5. The power steering device (100) according to claim 3, characterized in that: The electrical component (132) comprises an insulating shell (132a) and a first electrical terminal (132b), the insulating shell (132a) is sleeved on the outside of the first electrical terminal (132b), and the insulating shell (132a) is connected to the via (121); The first circuit board (133) is electrically connected to the first electrical terminal (132b); The second circuit board (134) includes a second electrical terminal (134a), and the second electrical terminal (134a) is electrically connected to the first circuit board (133) and the phase line (111).

6. The power steering device (100) according to claim 5, characterized in that: The electrical component (132) further comprises a communication terminal, the insulating shell (132a) is sleeved on the outside of the communication terminal, and the communication terminal is electrically connected to the first circuit board (133).

7. The power steering device (100) according to claim 5, characterized in that: The electronic control component (130) also includes a first communication connector (133a) and a second communication connector (134b), wherein the first communication connector (133a) is electrically connected to the first circuit board (133) and the third circuit board (135), and the second communication connector (134b) is electrically connected to the second circuit board (134) and the third circuit board (135).

8. The power steering device (100) according to claim 7, characterized in that: The first communication connector (133a) and the second communication connector (134b) are both pin headers.

9. The power steering device (100) according to any one of claims 2 to 8, characterized in that: In a plane perpendicular to the axial direction (D) of the motor (110), the orthographic projection of the electric control component (130) and the orthographic projection of the protective cover (120) are both completely located inside the orthographic projection of the motor (110).

10. The power steering device (100) according to any one of claims 1 to 8, characterized in that: The heat-conducting seat (131) includes a first connecting ear (131a), and the motor (110) includes a second connecting ear (112). The first connecting ear (131a) is arranged correspondingly in the axial direction (D) of the motor (110), and the first connecting ear (131a) is suitable for being fastened to the second connecting ear (112) by a fastener.

11. The power steering device (100) according to claim 3, characterized in that: The electrical component (132) comprises at least two first positioning portions, the first end portion (131b) of the heat conducting seat (131) comprises at least two second positioning portions, and each of the second positioning portions is positioned and connected to each of the first positioning portions in a one-to-one correspondence; and / or The second circuit board (134) comprises at least two third positioning portions, the second end portion (131c) of the heat conducting seat (131) comprises at least two fourth positioning portions, and each of the fourth positioning portions is positioned and connected to each of the third positioning portions in a one-to-one correspondence; and / or The third circuit board (135) comprises at least two fifth positioning portions, and the second end portion (131c) of the thermal seat (131) comprises at least two sixth positioning portions, and each of the sixth positioning portions is positioned and connected to each of the fifth positioning portions in a one-to-one correspondence.

12. The power steering device (100) according to any one of claims 3 to 8, characterized in that: The electrical component (132) is securely connected to the thermally conductive seat (131); and / or The second circuit board (134) is securely connected to the thermal seat (131); and / or The third circuit board (135) is fixedly connected to the heat-conducting seat (131); and / or The motor (110) is securely connected to the heat-conducting seat (131).

13. The power steering device (100) according to any one of claims 1 to 8, characterized in that: The heat conducting seat (131) is press-fitted onto the motor (110); or The heat conducting seat (131) is interference fit with the motor (110).

14. A steering system, characterized in that: The steering system comprises a steering assist device (100) according to any one of claims 1 to 13.

15. A vehicle, characterized in that: The vehicle comprises the steering assist device (100) according to any one of claims 1 to 13, or the steering system according to claim 14.

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