Electronic brake actuator housing structure, an electronic brake actuator with the housing structure and the brake with them both

Abstract

The invention discloses an electronic brake actuator housing (1) and an electronic brake actuator having the same. The electronic brake actuator housing (1) includes a lid structure (20) and a connector (22) disposed on the lid. The lid (21) includes a first conductive terminal (23) and a second conductive terminal (24) disposed within the lid (21). The first conductive terminal (23) and the second conductive terminal (24) are electrically connected to the connector (22) and a motor (30), respectively. The electronic brake actuator housing (1) and the electronic brake actuator having the conductive terminals (23,24) within the lid (21) and adapting them for electrical connection to the connector (22) and the motor (30), and by adjusting a position of the connector (22) to meet installation requirements of different client sides, enable a housing (1) of the electronic brake actuator to satisfy versatility and improving the assembly efficiency of the electronic brake actuator.

Description

[0001] 202407782

[0002] 1

[0003] Electronic brake actuator housing structure, an electronic brake actuator with the housing structure and the brake with them both

[0004] Technical Field

[0005] The invention relates to the technical field of electric automobile brake technology especially electronic parking brake, and in particular to Electronic brake actuator housing structure, an electronic brake actuator with the housing structure and the brake with them both.

[0006] Background

[0007] [1] The electronic brake actuator includes a motor and a transmission mechanism. The conventional mechanism reduces an output rotational speed of the motor while increasing an output torque, and transmits the output torque to a brake caliper to achieve a parking brake function. In an existing electronic parking brake actuator, a connector for mating with a client-side connector is placed in the perimeter position (regarded in compare when the output side 0 of the motor is placed ahead / placed on top) which means that the connector is placed underneath / below the outputs level 0 on the body of the electronic brake actuator. The motor in such electronic brake actuators is typically connected by using flexible lead wires that may be resistance welded to the conductive terminals namely to the motor terminals. However, due to constraints imposed by client-side environmental factors, the positioning of the client-side connector is with various modification and requirements. This prevents easy effective actuator modification for meeting the requirements with different customer projects so that sharing of the same mold for bodys is not possible. Consequently there remains necessity for developing individual housing molds which is resulting in increasing costs also with logistic backgrounds. Furthermore, the approach in which the electronic brake actuator is connected using lead wires or by means of resistance welding results in a low efficiency in terms of assembly process and risks for loosening contact at the electrical connection points due to long-term vibration during lifetime while under vehicle operation. The object of the present is 202407782

[0008] 2

[0009] first: gaining overall actuator design efficiency and second: avoiding the drawbacks of the prior art.

[0010] Summary of the Invention

[0011] [2] An objective of the invention is to provide a lid, i.e. a fluidtight lid structure for a housing, and an electronic brake actuator having the same. The lid is provided with conductive terminals and a connector that can be easily assembled, addressing the problems that modifications the electronic brake actuator cannot share a housing and has a low efficiency of assembly with the client side.

[0012] [3] According to a first aspect of embodiments of the invention, a lid is provided, including: a lid and a connector disposed on the lid, where the connector includes a connector housing and connector terminals located within the connector housing, and the lid further including a first conductive terminal and a second conductive terminal, where the first conductive terminal includes a first conductive body, and a first connection end and a second connection end located at two ends of the first conductive body, and the second conductive terminal includes a second conductive body, and a third connection end and a fourth connection end located at two ends of the second conductive body,

[0013] [4] Where the first conductive body and the second conductive body are disposed within the lid, the first connection end and the third connection end are electrically connected to the connector terminals, respectively, the second connection end and the fourth connection end extend out from a lower side of the lid and are electrically connected to a motor, and a spacing between the first connection end and the third connection end is smaller than a spacing between the second connection end and the fourth connection end.

[0014] [5] A further improvement of the lid of the invention is that the second connection end and the fourth connection end are fork-shaped structures, where when the lid is assembled to a body, the second connection end and the fourth connection end are plugged into electrical connection portions of the motor, respectively. 202407782

[0015] 3

[0016] [6] A further improvement of the lid of the invention is that the second connection end and the fourth connection end are disposed on two opposite sides of the lid, respectively.

[0017] [7] A further improvement of the lid of the invention is that the first conductive body is bent outward relative to the first connection end, and the second connection end is bent downward relative to the first conductive body.

[0018] [8] A further improvement of the lid of the invention is that the second conductive body is bent outward relative to the second connection end, and the fourth connection end is bent downward relative to the second conductive body.

[0019] [9] A further improvement of the lid of the invention is that the first conductive body and the second conductive body are arranged in an inverted V-shape.

[0020]

[0010] A further improvement of the lid of the invention is that the first conductive body and the second conductive body are injection-molded within the lid.

[0021]

[0011] A further improvement of the lid of the invention is that the first connection end and one of the connector terminals are connected by plug-in connection or are integrally formed; and / or the third connection end and the other one of the connector terminals are connected by plug-in connection or are integrally formed.

[0022]

[0012] A further improvement of the lid of the invention is that the first conductive terminal and the second conductive terminal are integrally formed from a conductive material.

[0023]

[0013] According to another aspect of embodiments of the present invention, an electronic brake actuator is provided, including a body, a motor and a transmission mechanism assembled within the body, and the lid according to any one of the above, where the lid lids the body and seals the body.

[0024]

[0014] The lid and the electronic brake actuator having the same provided in the invention, by arranging the conductive terminals within the lid and adapting them for 202407782

[0025] 4

[0026] electrical connection to the connector and the motor, and by adjusting a position of the connector to meet installation requirements of different client sides, thereby enabling a housing of the electronic brake actuator to satisfy versatility and improving the assembly efficiency of the electronic brake actuator.

[0027] Brief Description of Drawings

[0028]

[0015] The invention is described in detail below with reference to the accompanying drawings via exemplary embodiments. In the accompanying drawings:

[0029] FIG. 1 illustrates a schematic structural diagram of an electronic brake actuator provided in an embodiment of the invention; and

[0030] FIG. 2 illustrates a schematic cross-sectional diagram of an electronic brake actuator provided in an embodiment of the invention.

[0031]

[0016] The drawings are schematic and not necessarily drawn to scale. Furthermore, they only illustrate those parts necessary for elucidating the invention, while other parts may be omitted or only briefly mentioned. That is, in addition to the components shown in the drawings, the invention may also include other components.

[0032] Detailed Description

[0033]

[0017] The following describes implementations of the invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the invention from contents disclosed in this specification. Although the description of the invention will be introduced in conjunction with a preferred embodiment, it does not mean that features of the invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to lid other options or modifications that may be extended based on the claims of the invention. In order to provide a deeper understanding of the invention, the following description includes many specific details. The invention can also be implemented without these details. Furthermore, in 202407782

[0034] 5

[0035] order to avoid confusion or blurring key points of the invention, some specific details will be omitted from the description. It should be explained that where no conflict arises, embodiments in the invention may be combined, and features in embodiments may be combined.

[0036]

[0018] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0037]

[0019] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "inner", etc., is based on the orientation or positional relationship shown in the accompanying drawings, or the customary placement orientation or positional relationship when the invention product is in use. This is only for the purpose of facilitating the description of the invention and simplifying the description, rather than to indicate or imply that the referred apparatus or element must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the invention.

[0038]

[0020] In addition, terms such as “first” and “second” are merely used for descriptive purposes, and must not be interpreted as indicating or implying relative importance.

[0039]

[0021] In the description of this embodiment, it should be further noted that, unless otherwise clearly specified and defined, terms such as “arrange”, “connected”, and “connect” should be interpreted in a broad sense, for example, they may indicate a fixed connection, or a removable connection, or an integral connection; they may indicate a mechanical connection, or an electrical connection; they may indicate a direct connection, or an indirect connection via an intermediate medium, or internal communication between two elements. Those of ordinary skill in the art can interpret the specific meaning of the above-mentioned terms in this embodiment according to particular circumstances. 202407782

[0040] 6

[0041]

[0022] In order to make the purpose, technical solutions, and advantages of the invention clearer, implementations of the invention will be described in further detail below with reference to the accompanying drawings.

[0042]

[0023] FIG. 1 illustrates a schematic structural diagram of an electronic brake actuator provided in an embodiment of the invention; and FIG. 2 illustrates a schematic cross-sectional diagram of an electronic brake actuator provided in an embodiment of the invention. The electronic brake actuator in the sense of the present invention performs as motor gear unit (MGU) say electronic power pack that can generate the mechanical power for automotive brake actuation, especially for purpose of wheel brake actuation, may this be for the purpose of automotive service brake function, may this be for the purpose of automotive parking brake function or may this be for the service of both functions combined in one brake. The brake actuator is provided with mechanical interface means for driving connection with a body of a brake that may be designed as brake housing which is for example a caliper body of a disk brake. Alternatively the electronic actuator may work as electric drive for automotive drum brake systems and wherein the actuator is mounted to a brake stator, backplate or similar component of the drum brake.

[0043]

[0024] With reference to FIG. 1 and FIG. 2, an electronic brake actuator of an embodiment of the invention includes a body 10, a motor 30 and a multistage gear transmission mechanism (not shown) assembled within the body 10, and a lid structure 20. The body 10 includes a motor 30 accommodation chamber for accommodating the motor 30 and a gear chamber for accommodating the transmission mechanism. The electric motor connection in on the output side placed well on equivalent level or well above the level of the first gear stage. In result the housing body 10 with the lid structure 20 separate the motor compartment from the drivetrain compartment and the lid structure 20 closes and protects cavities i.e. drivetrain compartment finally fluidtightly. One or more extra elastomere sealing elements may be set in place for fluidtight inmolding of leadframe components or between the housing components but are preferably omitted when using a direct and stiff sealing contact with the suitable sealing interface structure between the paired components. The housing components can be connected by using one or more extra 202407782

[0044] 7

[0045] fastener element(s) or snaplocks. The connection between body and lid structure may be detachably, reversible i.e. for geardrive service purpose or for easy recirculation under sustainability criteria or life cycle management issue. Alternatively and most preferably all housing components (body 10 and lid structure 20) are irreversibly and fluidtightly tied together. All that may take with extra applied or integratally shaped flexible sealing components. A preference for housing connection process goes for gluing or ultrasonic welding or pulse welding or laserbeam welding. Moreover this a preference for housing material (body and lid) is for both the same thermoplastic material that allows for injection molding or inmolding with additional structure, the latter plastic material is not only resistant against gear drive grease but also allows for the connection process and thereby contributes with sufficient robustness regarding torque and force with bearing the components of the electronic actuator gear drive. In alternative the lid structure 20 may be made from metal material whereas the body 10 can preferably be made from plastic material.

[0046]

[0025] The lid structure 20 comprises a lid 21 comprising electric interface in shape of electrical connector 22 that is shaped with the lid 21. The electrical connector 22 is configured for electrical connection with automobiles electrical system as client side. The connector 22 includes a connector housing (not shown) and connector terminals (not shown) located within the connector housing. The connector 22 may be shaped and set according to installation requirements on client side. For example: the connector 22 is disposed above the lid 21, or the connector 22 is disposed on a lateral side of the lid 21. An orientation of a plug interface of the connector 22 may also be designed according to requirements. The lid structure 20 further includes a circumferential side surface extending downward around a periphery of the lid 21. The assembly surface of the body 10 has a stepped structure matching the stepped surface, so as to satisfy sealed assembly of the lid structure 20 and the body 10. The circumferential side surface and an assembly end surface of the body 10 are consequently configured as mating sealing interface portions in labyrinthstyle namely stepped shaped so that they mesh tightly in their mating cooperation and are interconnected additionally by welding preferably. A snaplock interconnection may alternatively be considered. 202407782

[0047] 8

[0048]

[0026] Furthermore, the lid structure 20 further includes a first conductive terminal 23 and a second conductive terminal 24. The first conductive terminal 23 and the second conductive terminal 24 are configured to conduct current between the motor 30 and the connector 22. Specifically, the first conductive terminal 23 includes a first conductive body 231, and a first connection end 232 and a second connection end 233 located at two ends of the first conductive body 231; and the second conductive terminal 24 includes a second conductive body 241, and a third connection end 242 and a fourth connection end 243 located at two ends of the second conductive body 241.

[0049]

[0027] Herein, the first conductive body 231 and the second conductive body 241 are disposed within the lid 21, the first connection end 232 and the third connection end 242 are electrically connected to the connector terminals, respectively, the second connection end 233 and the fourth connection end 243 extend out from a lower side of the lid 21 and are electrically connected to the motor 30, and the first conductive terminal 23 and the second conductive terminal 24 are integrally formed from a conductive material.

[0050]

[0028] A spacing between the first connection end 232 and the third connection end 242 is smaller than a spacing between the second connection end 233 and the fourth connection end 243. Through structural design of the first conductive terminal 23 and the second conductive terminal 24, one end of each of the first conductive terminal 23 and the second conductive terminal 24 may be connected to the connector 22, and the other end of each of them may be electrically connected to the motor 30.

[0051]

[0029] In an embodiment, the second connection end 233 and the fourth connection end 243 are fork-shaped structures. In an embodiment of the invention, in a direction in which the second connection end 233 and the fourth connection end 243 are opposite to each other, two clamping terminals of the second connection end 233 are oppositely disposed, and two clamping terminals of the fourth connection end 243 are oppositely disposed. Furthermore, free ends of the oppositely disposed clamping terminals are each provided with a position-limiting protrusion, thereby further improving the reliability of plug-in connection. 202407782

[0052] 9

[0053]

[0030] Herein, when the lid structure 20 is assembled to the body 10, the second connection end 233 and the fourth connection end 243 are plugged into electrical connection portions 31 of the motor 30, respectively. Electrical connection portions 31 of the motor 30 are sheet metal structures. This embodiment achieves electrical connection by means of direct plug-in upon assembly, eliminating the need for additional use of lead wires or methods such as welding, which can improve the assembly efficiency of the lid and the body 10. Through adaptive adjustment of the connector 22 on the lid, installation requirements of different client sides can be met, thereby enabling a housing of the electronic brake actuator to satisfy the requirement of versatility and reducing mold making costs. Certainly, in other embodiments, the second connection end 233 and the fourth connection end 243 may also be configured as elastically clamping shapes, establishing connection with the electrical connection portions of the motor 30 through direct plug-in.

[0054]

[0031] In the embodiment of the invention, the second connection end 233 and the fourth connection end 243 are disposed on two opposite sides of the lid 21, respectively, and the second connection end and the fourth connection end are correspondingly located above the motor 30 accommodation chamber. The first conductive body 231 is bent outward relative to the first connection end 232, and the second connection end 233 is bent downward relative to the first conductive body 231. The second conductive body 241 is bent outward relative to the second connection end 233, and the fourth connection end 243 is bent downward relative to the second conductive body 241. Such an arrangement causes the first conductive body 231 and the second conductive body 241 to be arranged in an inverted V-shape. Specifically, the first conductive body 231 and the second conductive body 241 are laid out following the structure of a top surface of the lid 21. For example, if the top surface of the lid 21 is an inclined surface, the first conductive body 231 and the second conductive body 241 are arranged in an inclined manner along the inclined surface. Herein, the first conductive body 231 and the second conductive body 241 are injection-molded within the lid 21.

[0055]

[0032] Furthermore, the first connection end 232 and one of the connector terminals are connected by plug-in connection or are integrally formed, and the third 202407782

[0056] 10

[0057] connection end 242 and the other one of the connector terminals are connected by plug-in connection or are integrally formed. Specific design methods can be adjusted according to the application environment or design requirements and are not specifically limited herein.

[0058]

[0033] The lid and the electronic brake actuator having the same provided in the invention, by arranging the conductive terminals within the lid and adapting them for electrical connection to the connector and the motor, and by adjusting a position of the connector to meet installation requirements of different client sides, thereby enabling a housing of the electronic brake actuator to satisfy versatility and improving the assembly efficiency of the electronic brake actuator. Furthermore, by configuring the end portions of the conductive terminals as fork-shaped structures, electrical connection between the conductive terminals and the electrical connection portions of the motor is achieved by means of plug-in connection simultaneously upon installation of the lid, thereby satisfying assembly reliability while improving the assembly efficiency.

[0059]

[0034] Although the invention has been illustrated and described with reference to certain preferred implementations of the invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the invention in conjunction with specific implementations, and it cannot be determined that the specific implementation of the invention is limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the invention. 202407782

[0060] 11

[0061] References

[0062] 1 electronic brake actuator housing 10 body

[0063] 20 lid structure

[0064] 21 lid

[0065] 22 electrical connector

[0066] 23 1stconductive terminal

[0067] 24 2ndconductive terminal

[0068] 30 electrical motor (DC-Motor)

[0069] 31 electrical connection portions 231 1stconductive body

[0070] 232 1stconnection end

[0071] 233 2ndconnection end

[0072] 241 2ndconductive body

[0073] 242 3rdconnection end

[0074] 243 4thconnection end

[0075] 0 Output (of motor 30)

Claims

20240778212Patent claims1. Electronic brake actuator housing (1) comprising: a body (10) and a lid structure (20), an electrical connector (22) disposed on the lid (22), characterized in that the electrical connector (22) comprises a connector housing and connector terminals located within the connector housing, and the lid (22) further comprising a first conductive terminal (23) and a second conductive terminal (24), wherein the first conductive terminal (23) comprises a first conductive body (231), and a first connection end (232)and a second connection end (233) located at two ends of the first conductive body (231), and the second conductive terminal (24) comprises a second conductive body (241), and a third connection end (242) and a fourth connection end (243) located at two ends of the second conductive body (241), wherein the first conductive body (231) and the second conductive body (241) are disposed within the lid (21), the first connection end (232) and the third connection end (242) are electrically connected to the connector terminals, respectively, the second connection end (233) and the fourth connection end (243) extend out from a lower side of the lid and are electrically connected to a motor (30), and a spacing between the first connection end (232) and the third connection end (242) is smaller than a spacing between the second connection end (233) and the fourth connection end (243).

2. The electronic brake actuator housing (1) according to claim 1, characterized in that the second connection end (233) and the fourth connection end (243) are fork-shaped structures, wherein when the lid (21) is assembled to a body (10), the second connection end (233) and the fourth connection end (243) are plugged into electrical connection portions of the motor (30) respectively.

3. The electronic brake actuator housing (1) according to one or multiple of the preceding claims, characterized in that the second connection end and the fourth connection end are disposed on two opposite sides of the lid, respectively.202407782134. The electronic brake actuator housing (1) according to one or multiple of the preceding claims, characterized in that the first conductive body is bent outward relative to the first connection end, and the second connection end is bent downward relative to the first conductive body.

5. The electronic brake actuator housing (1) according to one or multiple of the preceding claims, especially claims 3 or 4, characterized in that the second conductive body is bent outward relative to the second connection end, and the fourth connection end is bent downward relative to the second conductive body.

6. The electronic brake actuator housing (1) according to one or multiple of the preceding claims, especially according to claim 5, characterized in that the first conductive body and the second conductive body are arranged in an inverted V-shape.

7. The electronic brake actuator housing (1) according to one or multiple of the preceding claims, especially according to claim 1, characterized in that the first conductive body and the second conductive body are injection-molded within the lid.

8. The electronic brake actuator housing (1) according to one or multiple of the preceding claims, especially according to claim 1, characterized in that the first connection end and one of the connector terminals are connected by plug-in connection or are integrally formed; and / or the third connection end and the other one of the connector terminals are connected by plug-in connection or are integrally formed.

9. The electronic brake actuator housing (1) according to one or multiple of the preceding claims, especially according to claim 1, characterized in that the first conductive terminal and the second conductive terminal are integrally formed from a conductive material.2024077821410. An electronic brake actuator, comprising an electronic brake actuator housing (1) with a body (10), a motor (30) and a transmission mechanism assembled within the housing (1) comprising the features according to one or multiple of the preceding claims 1 - 9 so that the lid structure (20) seals the body (10).

Images