Controller structure of electronic braking system
By injection molding the coil assembly with the controller support seat, the problem of unsolid connection of the traditional crimp is solved, the yield and production efficiency of the electronic braking system are improved, and the stability and sealing of the connection are enhanced.
Patent Information
- Application Number
- CN202422169455.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The traditional coil assembly and the controller support seat are not firmly connected through crimping, which is easy to slip, has low accuracy and low yield.
The coil assembly is formed into an integrated structure with the controller support seat. Through injection molding, the crimping assembly process is reduced, the position accuracy is improved, and the connection stability and sealing are enhanced by injection molding limit pins and U-shaped flange sealing structure.
It improves the product yield rate, reduces the demand for assembly equipment, improves the production rhythm, avoids the problem of bending of the plug-in part, and enhances positioning accuracy and sealing effect.
Smart Images
Figure CN223182488U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, and specifically, to a controller structure of an electronic braking system. Background Art
[0002] With the continuous development of vehicle technology, the mechanical connection of the braking system has gradually decreased, and the electronic braking system connected by wires has gradually emerged. In the electronic braking system, in order to accommodate the control system, a controller housing structure needs to be set. The controller housing structure includes an end cover, a support seat, and a coil assembly connected to the support seat. After the traditional coil assembly and the controller support seat are respectively produced and formed, the coil assembly and the controller support seat are connected by crimping. On the one hand, the connection is not firm and is prone to slipping; on the other hand, the accuracy is low and the yield rate is low. How to solve at least one of the above problems has been pursued by those skilled in the art. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a controller structure of an electronic braking system, which improves the yield rate of products by forming an integral structure of the coil assembly and the controller support seat.
[0004] To achieve the above purpose, the utility model provides a controller structure of an electronic braking system, including a controller support seat, a circuit board, a controller end cover, and a coil assembly. The controller end cover is covered on the controller support seat and forms an accommodation cavity with the controller support seat. The circuit board is arranged in the accommodation cavity. The coil assembly and the controller support seat are of an integral structure. The coil assembly is connected to the circuit board to be adapted to a hydraulic solenoid valve in the electronic braking system.
[0005] In this application, the coil assembly and the controller support seat are of an integral structure, and there is no risk of detachment between the two. Since the coil assembly and the controller support seat are integrally injection-molded, the crimping assembly process between the coil assembly and the controller support seat is reduced, the demand for assembly equipment is reduced, and the production beat is increased. Moreover, there will be no problem of bending of the insertion part (pin) caused by excessive assembly force of the insertion part during the crimping of the coil assembly and the controller support seat, improving the product yield rate. The position accuracy of the coil assembly in the integral structure is high. The coil assembly itself can be used as a positioning structure to form a positioning assembly with the circuit board and the controller end cover, without an additional positioning structure, reducing costs.
[0006] Optionally, the coil assembly includes a coil body, a potting part, an insertion part, and a housing. The potting part is used to cover the coil body and is fixed in the housing. The insertion part is connected to the coil body and extends out of the housing. The housing and the controller support seat form an integral structure by injection molding.
[0007] Optionally, the housing is further provided with a boss which protrudes from the top end surface of the housing in the height direction. At least part of the insertion portion is located within the boss, and part of it protrudes from the boss; the boss is located within the controller support seat.
[0008] Optionally, the coil assembly further includes an injection molding limit pin adapted to fit into the injection molding positioning hole of the controller support seat;
[0009] The injection molding limit pin is disposed on the top end surface of the housing and is located on one side of the boss.
[0010] Optionally, the injection molding limit pin and the boss are symmetrically arranged with respect to the center line of the housing.
[0011] Optionally, the edge of the controller end cover forms a U-shaped flanging, and the edge of the controller support seat forms a U-shaped groove. The U-shaped flanging faces the mouth of the U-shaped groove to form an interlocking structure, and together they enclose an S-shaped channel. A seal is filled in the S-shaped channel, and the seal abuts against the U-shaped groove and the U-shaped flanging, and the seal extends along the S-shaped channel.
[0012] Optionally, one of the controller end cover and the controller support seat is provided with a positioning convex, and the other is provided with a positioning concave adapted to the positioning convex.
[0013] Optionally, the U-shaped groove has a first outer side wall portion and a first inner side wall portion. The first inner side wall portion is located inside the first outer side wall portion, and the positioning convex is disposed on the side of the first outer side wall portion away from the first inner side wall portion;
[0014] The U-shaped flanging has a second outer side wall portion and a second inner side wall portion. The second outer side wall portion is located outside the first outer side wall portion, and the positioning concave is located on the second outer side wall portion.
[0015] Optionally, there are at least two positioning convexes, and the positioning concaves correspond to the positioning convexes one by one.
[0016] Optionally, one of the controller support seat and the circuit board is provided with a positioning pin, and the other is provided with a positioning hole adapted to the positioning pin. Description of the Drawings
[0017] The drawings incorporated in and forming a part of this specification illustrate embodiments of the present specification and, together with the description, are used to explain the principles of the present specification.
[0018] Figure 1 is a schematic structural diagram of the controller of the electronic braking system in an embodiment of the present invention;
[0019] Figure 2 is the top view of Figure 1 ;
[0020] Figure 3 is Figure 1 the bottom view of
[0021] Figure 4 is Figure 1 the exploded view of
[0022] Figure 5 the inner view of the controller end cap, that is, Figure 2 in
[0023] Figure 6 is Figure 5 the first side view of
[0024] Figure 7 is Figure 5 the second side view of
[0025] Figure 8 is Figure 3 the inner side view of the controller support base, that is, Figure 3 in
[0026] Figure 9 is Figure 8 the first side view of
[0027] Figure 10 is Figure 8 the second side view of
[0028] Figure 11 is Figure 10 the sectional view of
[0029] Figure 12 the top view of the coil assembly;
[0030] Figure 13 the side view of the coil assembly;
[0031] Figure 14 the front view of the coil assembly;
[0032] Figure 15 the bottom view of the coil assembly;
[0033] Figure 16 is Figure 2 the sectional view A-A in
[0034] Figures 1 - 16 In
[0035] 100, controller structure;
[0036] 101. Controller support base; 101a. U-shaped groove; 101a-1. First outer wall portion; 101a-2. First inner wall portion;
[0037] 102. Circuit board;
[0038] 103. Controller end cover; 103a. U-shaped flange; 103a-1. Second outer wall portion; 103a-2. Second inner wall portion;
[0039] 104. Coil assembly; 104a. Plug-in portion; 104b. Housing; 104b-1. Boss; 104c. Injection molding limit pin;
[0040] 105. Seal;
[0041] 106a. Positioning convex; 106b. Positioning concave;
[0042] 107a. Positioning pin; 107b. Positioning hole. Detailed implementation manner
[0043] The utility model provides a controller structure 100 of an electronic braking system. By forming an integral structure of the coil assembly 104 and the controller support base 101, the yield rate of the product is improved.
[0044] In order to enable those skilled in the art to better understand the solution of the utility model, the following further detailed description of the utility model will be given in conjunction with the accompanying drawings and specific implementation manners.
[0045] The up and down directions herein are based on the state in the controller structure 100 of the electronic braking system Figure 4 The controller structure 100 is generally in a box structure and is formed by buckling the controller support base 101 and the controller end cover 103. In Figure 4 the controller end cover 103 is located on the upper side of the controller structure 100, and the controller support base 101 is located on the lower side of the controller structure 100. That is to say, the controller end cover 103 and the controller support base 101 are arranged up and down along the height direction of the controller structure 100.
[0046] Unless otherwise specified, the inside and outside herein are defined with reference to the center line extending along the height direction of the controller structure 100. In the direction perpendicular to its center line, the direction pointing to its center line is the inside, and the direction pointing to the opposite direction of the center line is the outside.
[0047] Relative terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.
[0048] Please refer toFigures 1 to 4 , and Figure 11 , Figure 1 is a schematic diagram of the controller structure 100 of the electronic braking system in an embodiment of the present utility model; Figure 2 is Figure 1 a top view of; Figure 3 is Figure 1 a bottom view of; Figure 4 is Figure 1 an exploded schematic diagram of; Figure 11 is Figure 10 a sectional view of.
[0049] As shown in the figure, the controller structure 100 of the electronic braking system of the present utility model is used in the electronic braking system of a vehicle. With the continuous development of vehicle technology, in the electronic braking system, that is, the by-wire braking system of the vehicle, the mechanical connection is gradually reduced, and the power transmission between the brake pedal and the brake is separated. Instead, a wire connection is used; the original brake pedal is replaced by an analog generator, and the brake intention of the driver is monitored through the brake pedal position sensor to generate and transmit a brake signal, converting the mechanical signal of the brake pedal into an electronic control signal and transmitting the signal to the control system and the actuator to achieve braking force with an electronic control module and feedback the feeling of stepping on the pedal to the driver according to a certain algorithm; the wire transmits energy and the data line transmits signals; among them, the controller structure 100 provides an accommodation space for the control system. This solution mainly relates to the improvement of the controller structure 100 (that is, the structure of the controller housing 104b commonly referred to). In this controller structure 100, it includes a coil assembly 104, and the coil assembly 104 is adapted to the flow rate of the hydraulic solenoid valve in the electronic braking system, so as to precisely adjust the wheel cylinder hydraulic pressure.
[0050] Please refer to Figures 1 - 4 and see Figures 12 - 15 , Figure 12 is a top view of the coil assembly 104; Figure 13 is a side view of the coil assembly 104; Figure 14 is a front view of the coil assembly 104; Figure 15 is a bottom view of the coil assembly 104.
[0051] As shown in the figure, the coil assembly 104 is accommodated in the accommodation cavity formed by the controller support base 101 and the controller end cap 103. The controller end cap 103 is covered on the controller support base 101, thereby enclosing the accommodation cavity with the controller support base 101. In addition, a circuit board 102 is provided in the accommodation cavity, and the circuit board 102 forms an electrical connection and / or a signal connection with the coil assembly 104. Among them, the coil assembly 104 and the controller support base 101 are of an integral structure. Specifically, the coil assembly 104 specifically includes an encapsulation part, a plug-in part 104a, and a housing 104b. The encapsulation part is used to cover the coil body and is fixed in the housing 104b. The coil body is connected and extends out of the housing 104b. The housing 104b and the controller support base 101 are formed into an integral structure by injection molding. During the production process, the controller support base 101 and the coil assembly 104 are formed by secondary insert injection molding. During the injection molding process, the coil assembly 104 is first molded in the mold, and then the coil assembly 104 is taken out and placed into another mold. Through the process of re-injection molding, the controller support base 101 is formed, thereby making the controller support base 101 and the coil assembly 104 form an integral structure. This replaces the traditional method in which the coil assembly 104 and the controller support base 101 are separately produced and formed, and then the coil assembly 104 and the controller support base 101 are connected by crimping, which avoids the following defects caused by the crimping method:
[0052] First, additional processes are required during the crimping assembly process of the coil assembly 104 and the controller support base 101.
[0053] Second, additional positioning tooling and crimping tooling are added, resulting in higher costs and slower production beats.
[0054] Third, during the crimping process, since the coil assembly 104 and the controller support base 101 are assembled through subsequent processes, the positional accuracy of the coil assembly 104 is poor, and the coil assembly 104 needs to have an elastic adjustment structure to accommodate the positional deviation during the assembly with the mating part.
[0055] That is to say, since the coil assembly 104 and the controller support base 101 in the present application are of an integral structure, there is no risk of detachment between the two. Because the coil assembly 104 and the controller support base 101 are integrally injection molded, the crimping assembly process between the coil assembly 104 and the controller support base 101 is reduced, the demand for assembly equipment is reduced, and the production beat is increased. Moreover, there will be no problem of bending of the plug-in part 104a (pin) caused by excessive assembly force of the plug-in part 104a during the crimping of the coil assembly 104 and the controller support base 101, improving the product yield. The positional accuracy of the coil assembly 104 in the integral structure is high, and the coil assembly 104 itself can be used as a positioning structure to form a positioning assembly with the circuit board 102 and the controller end cap 103, eliminating the need for additional positioning structures and reducing costs.
[0056] In order to form injection molding between the coil assembly 104 and the controller, the structure of the coil assembly 104 is improved in this application. Specifically, the housing 104b is further provided with a boss 104b-1. The boss 104b-1 protrudes from the top surface of the housing 104b in the height direction. At least part of the insertion part 104a is located within the boss 104b-1, and part of it extends out of the boss 104b-1. The boss 104b-1 is located within the controller support seat 101. By providing the boss 104b-1, on the one hand, it protects the insertion part 104a during the injection molding process; on the other hand, it plays a limiting role during the secondary injection molding process. Optionally, in order to perform positioning during the secondary injection molding process, the coil assembly 104 further includes an injection molding limit pin 107a104c, and the injection molding limit pin 107a104c is adapted to the injection molding positioning hole 107b of the controller support seat 101. Optionally, the injection molding limit pin 107a104c is provided on the top surface of the housing 104b and is located on one side of the boss 104b-1; or the injection molding limit pin and the boss 104b-1 are symmetrically arranged with respect to the center line of the housing 104b; that is, both the injection molding limit pin 107a104c and the boss 104b-1 are provided on the top surface of the housing 104b, and both play a positioning role.
[0057] Please refer to Figures 5 - 10 , Figure 5 is the internal view of the controller end cover 103, that is Figure 2 in, the bottom view of the controller end cover 103; Figure 6 is Figure 5 the first side view of Figure 7 is Figure 5 the second side view of Figure 8 is Figure 3 the inner side view of the controller support seat 101 of Figure 3 in, the top view of the controller support seat 101; Figure 9 is Figure 8 the first side view of Figure 10 is Figure 8 the second side view of Figure 16 , Figure 16 is Figure 2 the sectional view taken along A-A in
[0058] In the second aspect of the present application, the sealing performance of the controller structure 100 is improved. Specifically, a U-shaped flange 103a is formed at the edge of the controller end cap 103. The opening direction of the U-shaped flange 103a is the same as that of the controller end cap 103, both forming a downward opening; a U-shaped groove 101a is formed at the edge of the controller support base 101, and the opening direction of the U-shaped groove 101a is upward. Thus, the mouth of the U-shaped flange 103a faces the mouth of the U-shaped groove 101a, and the U-shaped groove 101a forms an interlock; specifically, the U-shaped groove 101a has a first outer wall portion 101a-1 and a first inner wall portion 101a-2, and the first inner wall portion 101a-2 is located inside the first outer wall portion 101a-1; the U-shaped flange 103a has a second outer wall portion 103a-1 and a second inner wall portion 103a-2, and the second outer wall portion 103a-1 is located outside the first outer wall portion 101a-1; forming an interlock means that the second inner wall portion 103a-2 is located inside the U-shaped groove 101a, the second outer wall portion 103a-1 is located outside the U-shaped groove 101a, and at the same time, the first outer wall portion 101a-1 of the U-shaped groove 101a is located inside the U-shaped flange 103a, and the second outer wall portion 103a-1 is located inside the U-shaped flange 103a; thus, the U-shaped groove 101a and the U-shaped flange 103a jointly enclose an S-shaped channel, and a sealing member 105 is filled in the S-shaped channel. The sealing member 105 is in tight contact with the U-shaped groove 101a and the U-shaped flange 103a, and the sealing member 105 extends along the S-shaped channel; optionally, the inner wall portion of the U-shaped flange 103a is attached to the side portion of the controller end cap 103 and jointly extends into the U-shaped groove 101a to tightly press the sealing member 105 to improve the sealing effect.
[0059] Optionally, in order to play a positioning role and avoid misalignment when assembling the controller seat support and the sealing end cap, one of the controller end cap 103 and the controller support base 101 is provided with a positioning protrusion 106a, and the other is provided with a positioning recess 106b adapted to the positioning protrusion 106a; specifically, the positioning protrusion 106a is provided on the side of the first outer wall portion 101a-1 away from the first inner wall portion 101a-2; the positioning recess 106b is located on the second outer wall portion 103a-1; in addition, in order to improve the positioning accuracy, there are at least two positioning protrusions 106a, and the positioning recesses 106b correspond to the positioning protrusions 106a one by one; at the same time, in order to improve the installation accuracy between the circuit board 102 and the controller support base 101, one of the controller support base 101 and the circuit board 102 is provided with a positioning pin 107a, and the other is provided with a positioning hole 107b adapted to the positioning pin 107a.
[0060] The above has introduced in detail the instrument supply device provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.
Claims
1. The controller structure of an electronic braking system, characterized in that It includes a controller support base, a circuit board, a controller end cover, and a coil assembly. The controller end cover covers the controller support base and encloses an accommodation cavity with the controller support base. The circuit board is disposed in the accommodation cavity. The coil assembly and the controller support base are of an integral structure. The coil assembly is connected to the circuit board to be adapted to a hydraulic solenoid valve in the electronic braking system.
2. The controller structure of the electronic braking system according to claim 1, characterized in that, The coil assembly includes a coil body, an encapsulation part, a plug-in part, and a housing. The encapsulation part is used to wrap the coil body and is fixed in the housing. The plug-in part is connected to the coil body and extends out of the housing. The housing and the controller support base form an integral structure by injection molding.
3. The controller structure of the electronic braking system according to claim 2, characterized in that The housing is further provided with a boss. The boss protrudes from the top end surface of the housing in the height direction. At least a part of the plug-in part is located in the boss, and a part extends out of the boss. The boss is located in the controller support base.
4. The controller structure of the electronic braking system according to claim 3, characterized in that, The coil assembly further includes an injection molding limit pin, which is used to be adapted to an injection molding positioning hole of the controller support base. The injection molding limit pin is disposed on the top end surface of the housing and is located on one side of the boss.
5. The controller structure of the electronic braking system according to claim 4, characterized in that, The injection molding limit pin and the boss are symmetrically arranged with respect to the center line of the housing.
6. The controller structure of the electronic braking system according to any one of claims 1-5, characterized in that, The edge of the controller end cover forms a U-shaped flanging. The edge of the controller support base forms a U-shaped groove. The U-shaped flanging and the mouth of the U-shaped groove face each other to form an interlock and jointly enclose an S-shaped channel. A seal is filled in the S-shaped channel. The seal abuts against the U-shaped groove and the U-shaped flanging, and the seal extends along the S-shaped channel.
7. The controller structure of the electronic braking system according to claim 6, characterized in that, One of the controller end cover and the controller support base is provided with a positioning protrusion, and the other is provided with a positioning recess adapted to the positioning protrusion.
8. The controller structure of the electronic braking system according to claim 7, characterized in that, The U-shaped groove has a first outer side wall part and a first inner side wall part. The first inner side wall part is located inside the first outer side wall part. The positioning protrusion is disposed on the side of the first outer side wall part away from the first inner side wall part. The U-shaped flanging has a second outer side wall part and a second inner side wall part. The second outer side wall part is located outside the first outer side wall part. The positioning recess is located in the second outer side wall part.
9. The controller structure of the electronic braking system according to claim 8, characterized in that, There are at least two positioning protrusions, and the positioning recesses correspond to the positioning protrusions one by one.
10. The controller structure of the electronic braking system according to any one of claims 1-5, characterized in that, One of the controller support base and the circuit board is provided with a positioning pin, and the other is provided with a positioning hole adapted to the positioning pin.