Coil damping and limiting structure and ESC controller applying same

Abstract

The utility model discloses a coil damping limit structure and an ESC controller applying the same, the coil damping limit structure comprises a housing and a plurality of coil assemblies, the housing is provided with a plurality of cavities extending along a first direction, each cavity is internally provided with a plurality of elastic limit parts and positioning parts extending along the first direction, each coil assembly is arranged in the corresponding cavity of the housing, and the elastic limit parts and the positioning parts extend along the first direction. Each coil assembly comprises a coil holder, a coil and a coil shell, the coil holder is arranged in the cavity of the shell through at least one part of the positioning part, the coil is arranged in the cavity of the coil shell through the coil holder, a gap is formed between the coil holder and the inner side wall of the coil shell, and the top of the coil shell is in contact with at least one part of the elastic limiting part; and at least one part of the elastic limiting part and the coil shell jointly form a structure for reducing the vibration generated by the coil assembly through the reciprocating motion of the coil shell under the elastic force action of the elastic limiting part. According to the utility model, the problems of high manufacturing cost and complex assembly of the damping structure of the ESC controller in the prior art are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile components, and in particular relates to a coil shock-absorbing and limiting structure and an ESC controller using the same. Background Art

[0002] The operating vibration generated by the ESC controller will affect the working performance of the coil inside the ESC structure. Therefore, rubber balls or metal shrapnel are usually designed in the gap between the coil and the shell to offset the transmission of vibration and prevent coil failure.

[0003] At present, the material cost of rubber balls or metal shrapnel is relatively high, and the rubber balls need to be placed manually, thereby increasing the manufacturing cost of the ESC controller structure; at the same time, the control circuit board within the ESC controller structure needs to be fixed using a screw driving process, which has high requirements for the assembly process and also increases the manufacturing cost of the ESC controller to a certain extent. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a coil shock-absorbing and limiting structure and an ESC controller using the same.

[0005] The purpose of this application is achieved through the following technical solutions:

[0006] In a first aspect, a coil damping and limiting structure is provided, comprising:

[0007] The housing has a plurality of cavities extending along a first direction, and each of the cavities has a plurality of elastic limiting portions and positioning portions extending along the first direction;

[0008] a plurality of coil assemblies, each of the coil assemblies being disposed in a cavity of the corresponding housing, each of the coil assemblies comprising a bobbin, a coil, and a coil housing; the bobbin being disposed in the cavity of the housing via at least a portion of the positioning portion; the coil being disposed in the cavity of the coil housing via the bobbin, with a gap being defined between the bobbin and an inner sidewall of the coil housing; the top of the coil housing being in contact with at least a portion of the elastic limiting portion; at least a portion of the elastic limiting portion and the coil housing together forming a structure for reducing vibration generated by the coil assembly by reciprocating movement of the coil housing under the elastic force of the elastic limiting portion;

[0009] The first direction is the height direction of the housing.

[0010] In some embodiments, the coil assembly further comprises:

[0011] The coil pin is arranged on the bobbin and is linearly connected to the coil.

[0012] In some embodiments, the housing is an integral injection-molded component, and the bottom of the housing is provided with injected silicone.

[0013] In a second aspect, an ESC controller is provided, comprising, in addition to the coil damping and limiting structure, the following components:

[0014] a control circuit board, disposed in the cavity of the housing, the control circuit board being electrically connected to the coil via the coil pins; and

[0015] The motor pins are arranged on the control circuit board and are used for connecting to an external motor.

[0016] In some embodiments, the control circuit board is fixed by fixing buckles in the housing.

[0017] In some embodiments, the motor pins are fixed by snaps inside the housing.

[0018] The beneficial effects of the present invention are as follows: the ESC controller provided by the present invention reduces the vibration generated by the coil assembly through the reciprocating movement of the coil housing under the elastic force of the elastic limiting part, and does not transmit the vibration to the wire rack, thereby avoiding damage to the welding of the wire rack and the circuit board; at the same time, there is no need to use rubber rings or metal shrapnel, the entire controller structure is simple and easy to process and manufacture, saving labor costs; the control circuit board is fixed with clips instead of screws, which reduces the difficulty of assembly and reduces material loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is an AA cross-sectional view of an ESC controller structure provided in one embodiment of the present invention;

[0021] Figure 2 This is a schematic structural diagram of a coil assembly provided in one embodiment of the present invention;

[0022] Figure 3 This is a schematic structural diagram of the bottom of an ESC controller provided in one embodiment of the present invention;

[0023] Figure 4 This is a left side view of an ESC controller provided in one embodiment of the present invention;

[0024] Figure 5This is a schematic structural diagram of the top of an ESC controller provided in one embodiment of the present invention;

[0025] Figure 6 is a cross-sectional view of an ESC controller provided in one embodiment of the present invention;

[0026] Figure 7 yes Figure 6 Cross-sectional view of the middle CC section;

[0027] Figure 8 yes Figure 6 Cross-sectional view of the middle DD section.

[0028] Figure 9 This is a front view of a control system provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0030] In one embodiment, if Figure 1 As shown, the coil damping and limiting structure 10 includes: a housing 101 and a coil assembly 102. In one embodiment, the first direction is the Y direction.

[0031] The housing 101 has a plurality of cavities extending along a first direction and each cavity has a plurality of elastic limiting portions and positioning portions extending along the first direction. Figure 1 、 Figure 3-5As shown, the housing 101 is connected by two hollow shell components, wherein the two shell components are an upper shell 1011 and a lower shell 1012. The upper shell 1011 is made of aluminum alloy material. The upper shell 1011 is provided with a mouth-shaped groove 1011a protruding along the Y direction to prevent the upper shell 1011 from deformation; the bottom of the mouth-shaped groove 1011a is provided with thermal conductive silicone grease 1011b to enhance the heat dissipation of high-power components in the ESC controller 20, and the bottom of the upper shell 1011 is provided with 3 positioning connection grooves for positioning and connecting with the top of the lower shell 1012. Eight bosses 1011c extending along the Y direction are evenly distributed on the edge of the upper shell 1011, and the height of the boss 1011c is 0.8 mm. By injecting sealant 1011d into the boss 1011c, the upper shell 1011 and the lower shell 1012 are tightly connected, thereby ensuring the sealing of the entire controller. The lower shell 1012 is made of PBT-GF30 material and has good heat dissipation performance. The top of the lower shell 1012 has three positioning connection parts 1013 extending along the Y direction, which are fixedly connected to the positioning connection grooves of the upper shell 1011. The interior of the lower shell 1012 has multiple through holes extending along the Y direction and multiple elastic limit parts and positioning parts in the cavity. In one embodiment, Figure 1 、 Figure 3 and Figure 6-8 As shown, the positioning portion of the housing 1012 includes a coil positioning portion 1012a, a bobbin fixing portion 1012b, and a bobbin limiting portion 1012c. The elastic limiting portion of the lower housing 1012 is a push-out portion 1012d. The four coil positioning portions 1012a are evenly arranged in the opening on the bottom surface of the lower housing 1012 and are used to position the coil assembly 102. The four bobbin fixing portions 1012b are evenly arranged on the inner side wall of the cavity of the outer shell 101. The three bobbin limiting portions 1012c and the two push-out portions 1012d are all arranged on the same horizontal plane within the lower housing 1012. The outer shell 101 is an integral injection-molded component, and the bottom of the outer shell 101 has injected silicone 1011e to ensure the sealing of the structure.

[0032] Each coil assembly 102 is arranged in the cavity of the corresponding housing 101. Each coil assembly 102 includes a coil 1021, a bobbin 1022 and a coil housing 1024. The bobbin 1022 is arranged in the cavity of the housing 101 through at least a portion of the positioning portion. The coil 1021 is arranged in the cavity of the coil housing 1024 through the bobbin 1022, and there is a gap between the bobbin 1022 and the inner wall of the coil housing 1024. The top of the coil housing 1024 is in contact with at least a portion of the elastic limiting portion. At least a portion of the elastic limiting portion and the coil housing 1024 together constitute a structure for reducing the vibration generated by the coil assembly 102 by the reciprocating movement of the coil housing 1024 under the elastic force of the elastic limiting portion. In one embodiment, as Figure 1-2As shown, the coil assembly 102 includes a coil 1021, a bobbin 1022, a coil pin 1023, and a coil housing 1024. The groove on the outer wall of the bobbin 1022 is tightly fitted with the four bobbin fixing portions 1012b and is disposed within the cavity of the housing 101. The coil 1021 passes through the four coil positioning portions 1012a and is mounted on the bobbin 1022. Both the coil 1021 and the bobbin 1022 are disposed within the cavity of the coil housing 1024. A gap exists between the bobbin 1022 and the inner wall of the coil housing 1024. The outer wall of the top of the bobbin 1022 contacts the bobbin limiting portion 1012c to form a limit. In one embodiment, the coil utilizes enameled copper wire. The top of the coil housing 1024 contacts the push-out portion 1012d. When the structure vibrates, the bottom of the coil housing 1024 is provided with a coil end cap 1024a, riveted integrally to the sidewall of the coil housing 1022. The coil housing 1024 and coil end cap 1024a reciprocate under the elastic force of the push-out portion 1012d, thereby dampening vibrations generated by the coil assembly 102. In one embodiment, the coil housing 1024 and coil end cap 1024a have a 0.6mm clearance under the elastic force of the push-out portion 1012d. The coil end cap 1024a can move into contact with the valve body of the actuator 30, enhancing the heat dissipation performance of the structure. Coil pins 1023 are located at the upper end of the bobbin 1022 and connected to the coil 1021. Coil pins 1023 are directly inserted into and electrically connected to the control circuit board 201. In one embodiment, coil pins 1023 are wave-solderable pins.

[0033] In one embodiment, if Figure 1 As shown, the ESC controller 20 includes not only the shock absorbing and limiting structure 10 , but also a control circuit board 201 and a motor pin 202 .

[0034] The control circuit board 201 is disposed in the cavity of the housing 101 and is electrically connected to the coil 1021 via the coil pin 1023. Figure 1 As shown, the control circuit board 201 is pressed into the fixing clip 2021a, where it is elastically deformed and interferingly fixed. The bottom is restrained by the support portion 1012g in the lower housing 1012, and finally secured by wave soldering pins. Motor pins 202 are provided on the control circuit board 201 for connecting to an external motor. In one embodiment, the motor pins 202 are secured by clips in the housing 101.

[0035] In one embodiment, if Figure 9As shown, a control system includes, in addition to the ESC controller 20, an actuator 30 and a sensor. The actuator 30 is disposed at the bottom of the ESC controller 20 and is fixedly connected to the ESC controller 20, and is used to control the operating state of the device connected to the actuator 30. The sensor is electrically connected to the control circuit board 201 and is used to transmit operating information of the device connected to the actuator. In one embodiment, the control circuit board 201 calculates the values ​​measured by external sensors and controls the current conditions of different coils 1021 to control the actuator 30 and the motor current to achieve different functions. In one embodiment, the sensor can be a steering angle sensor, a yaw angular velocity sensor, a lateral acceleration sensor, or other sensors such as a pressure sensor and a wheel speed sensor. In one embodiment, the control system can be applied to anti-lock braking system (ABS), electronic brake-force distribution (EBD), traction control system (TCS) and vehicle dynamics control system (VDC). Based on the existing hardware of this system, it can also be expanded to other additional systems, such as hydraulic brake assist (HBA), hill hold control (HHC), automatic hold (AVH), hill descent control (HDC), rollover mitigation (RMI), electronic parking brake (EPBI), etc.

[0036] The ESC controller 20 provided by the present invention has a simple structure and is easy to process and manufacture. By arranging multiple push-out parts 1012d in the shell instead of rubber rings or metal shrapnel, the vibration generated by the entire structure is reduced by the reciprocating movement of the coil housing 1024 under the elastic force of the push-out parts 1012d, and the vibration will not be transmitted to the wire rack 1022, thereby avoiding damage to the welding of the wire rack 1022 and the control circuit board 201; the control circuit board 201 is fixed with a snap fastener instead of a screw, and the coil housing 1024 and the coil end cover 1024a have a movable space of 0.6mm, which reduces the difficulty of assembly, saves labor costs, and reduces material loss; in addition, the present ESC controller structure also has the advantages of accurate positioning of parts, easy installation, good heat dissipation effect of components, and good sealing effect.

[0037] The above description is merely a preferred embodiment of one or more embodiments of this specification and is not intended to limit one or more embodiments of this specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification shall be included in the scope of protection of one or more embodiments of this specification.

Claims

1. A coil damping and limiting structure, characterized in that: include: The housing has a plurality of cavities extending along a first direction, and each of the cavities has a plurality of elastic limiting portions and positioning portions extending along the first direction; a plurality of coil assemblies, each of the coil assemblies being disposed in a cavity of a corresponding housing, each of the coil assemblies comprising a bobbin, a coil, and a coil housing; the bobbin being disposed in the cavity of the housing via at least a portion of the positioning portion; the coil being disposed in the cavity of the coil housing via the bobbin, with a gap being defined between the bobbin and an inner sidewall of the coil housing; the top of the coil housing being in contact with at least a portion of the elastic limiting portion; at least a portion of the elastic limiting portion and the coil housing together forming a structure for reducing vibration of the coil assembly by reciprocating movement of the coil housing under the elastic force of the elastic limiting portion; The first direction is the height direction of the housing.

2. The coil damping and limiting structure according to claim 1, characterized in that: The coil assembly further comprises: The coil pin is arranged on the bobbin and is linearly connected to the coil.

3. The coil damping and limiting structure according to claim 1, characterized in that: The shell is an integral injection-molded component, and the bottom of the shell is provided with injection silicone.

4. An ESC controller, characterized in that: In addition to the coil shock-absorbing and limiting structure according to any one of claims 1-2, the present invention further comprises: a control circuit board, disposed in the cavity of the housing, the control circuit board being electrically connected to the coil via the coil pins; and The motor pins are arranged on the control circuit board and are used for connecting to an external motor.

5. The ESC controller according to claim 4, characterized in that: The control circuit board is fixed by fixing buckles in the housing.

6. The ESC controller according to claim 4, characterized in that: The motor pins are fixed through buckles in the housing.

Images