Assembly structure and assembly equipment for solenoid valve coil and ECU shell

Abstract

The utility model discloses an assembly structure and assembly equipment for a solenoid valve coil and an ECU (electronic control unit) shell, which belong to the field of automobile electronic braking, and comprise a solenoid coil body and an ECU shell, a pin support frame is fixed on the solenoid coil body, one end of an electrode pin penetrates through the pin support frame and then is electrically connected with a coil of the solenoid coil body, and the other end of the electrode pin is electrically connected with the ECU shell. The other end of the connecting rod extends into an inserting groove formed in the ECU shell after being bent for two times; a shock pad is further fixed to the end, close to the ECU shell, of the electromagnetic coil body, and the shock pad and the pin supporting frame are arranged in an axial symmetry mode. By adopting the assembling structure and the assembling equipment of the electromagnetic valve coil and the ECU shell, the electrode pins can be protected in the assembling process through the design of the pin supporting frame, the conical plug-in mounting head, the shock pad, the terminal bending process and the like, so that potential adverse effects caused by stress deformation or even damage of the electrode pins in the assembling process are effectively avoided, and the service life of the electrode pins is prolonged. And the connection performance and the conductive performance of the electrode pins in a product structure are ensured.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronic braking technology, and in particular to an assembly structure and assembly equipment for an electromagnetic valve coil and an ECU housing. Background Technology

[0002] As a key actuator in the automotive braking system, the solenoid valve coil's operation is controlled by the brake controller ECU through adjusting the coil current, enabling functions such as pressure boosting, pressure reduction, and pressure holding in the braking system. Therefore, the performance of the solenoid valve coil directly affects the response speed of the automotive braking system.

[0003] Meanwhile, the electrode pins of the solenoid valve coil not only need to transmit current in the ECU controller, but also need to ensure a reliable connection between the ECU housing and the circuit board. However, existing technologies have the following shortcomings in terms of assembly process and application reliability of solenoid valve coils:

[0004] 1. Risk of damage during assembly: During the assembly of the solenoid valve coil and the ECU housing, the electrode pins are easily deformed or damaged by external forces, which not only reduces the production pass rate, but also affects the overall performance of the product.

[0005] 2. Insecure connection: The connection between the solenoid valve coil and the ECU housing and circuit board is not secure enough, making it difficult to maintain long-term stability under harsh application conditions, thus affecting the reliability and safety of the system. Utility Model Content

[0006] The purpose of this invention is to provide an assembly structure and assembly equipment for a solenoid valve coil and an ECU housing, thereby solving the aforementioned technical problems.

[0007] To achieve the above objectives, this utility model provides an assembly structure for an electromagnetic valve coil and an ECU housing, including an electromagnetic coil body and an ECU housing. The electromagnetic coil body is inserted into the ECU housing via electrode pins and is electrically connected to a circuit board located inside the ECU housing. A pin support frame is fixed to one end of the electromagnetic coil body facing the ECU housing. One end of the electrode pin passes through the pin support frame and is electrically connected to the coil of the electromagnetic coil body. The other end extends into an insertion slot opened on the ECU housing after two bends.

[0008] A shock-absorbing pad is also fixed to one end of the electromagnetic coil body near the ECU housing. The shock-absorbing pad is arranged symmetrically with the pin support frame.

[0009] An accommodating groove is provided on the ECU housing at the position corresponding to the shock absorber, and the shock absorber is placed inside the accommodating groove.

[0010] Preferably, the electrode pin includes an axial lead-out section, a radial extension section, and an axial insertion section connected in sequence. The radial extension section extends away from the electromagnetic coil body at one end near the axial insertion section. A tapered insertion head is fixed at one end of the axial insertion section near the radial lead-out section. The tip of the tapered insertion head extends into the insertion slot and is interference-fitted with the insertion slot. The flat end of the tapered insertion head is flush with the surface of the insertion slot.

[0011] Preferably, the flat end of the tapered insert head is 2mm away from the bend between the radially extended section and the axial insert section, and the vertical distance between the flat end of the tapered insert head and the bottom end of the shock-absorbing pad is 0.5mm-1mm.

[0012] Preferably, the electrode leads are formed by a terminal bending process.

[0013] An assembly device is used to assemble an assembly structure of a solenoid valve coil and an ECU housing. The device includes a robotic arm and a pin positioning cylinder and a coil support positioning cylinder fixed to the end of the robotic arm via a mounting plate. The end of the pin positioning cylinder is fixed with a pin protection plate. A clearance groove is provided on the pin protection plate at the position corresponding to the electrode pin. The bottom end of the clearance groove is pressed against the top end of a conical insertion head. The end of the coil support positioning cylinder is fixed with a support head that matches the center hole at the top end of the solenoid coil body.

[0014] Therefore, the present invention, by adopting the above-mentioned assembly structure and assembly equipment for the solenoid valve coil and ECU housing, has the following beneficial effects:

[0015] 1. Enhanced connection stability: The pin support frame effectively prevents the electrode pins from deforming under stress during assembly, ensuring the stability and reliability of the connection;

[0016] The tapered insertion head design not only improves the insertion accuracy of the electrode pins, but also enhances the connection's strength, avoiding the risk of loosening and falling off;

[0017] 2. Improve assembly efficiency: The multi-segment bending design of the electrode pins simplifies the assembly steps, ensures the consistency of pin shape and dimensional accuracy, reduces assembly time and cost, and further improves assembly efficiency and quality.

[0018] 3. Improved seismic performance: The use of shock-absorbing pads can absorb and buffer vibrations, reduce the loosening and damage of electrode pins caused by vibrations, and improve the stability and durability of the overall structure;

[0019] Meanwhile, the shock-absorbing pad is placed inside the receiving groove, which not only protects the shock-absorbing pad but also ensures the durability of the shock absorption effect.

[0020] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the solenoid valve coil structure of the present invention, which is an assembly structure of the solenoid valve coil and the ECU housing.

[0022] Figure 2 This is a schematic diagram of the structure of an assembly equipment according to the present invention;

[0023] Figure 3 This is a magnified view of point A;

[0024] Figure 4 This is an assembly diagram of the assembly structure of the solenoid valve coil and the ECU housing according to the present invention.

[0025] Figure Labels

[0026] 1. Electromagnetic coil body; 11. Center hole; 2. Shock-absorbing pad; 3. Pin support frame; 4. Electrode pin; 41. Axial lead-out section; 42. Radial extension section; 43. Axial insertion section; 44. Conical insertion head; 5. Pin positioning cylinder; 6. Mounting plate; 7. Coil support positioning cylinder; 8. Pin protection plate; 81. Clearance groove; 9. ECU housing. Detailed Implementation

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] like Figure 1 and Figure 4As shown, an assembly structure for an electromagnetic valve coil and an ECU housing includes an electromagnetic coil body 1 and an ECU housing 9. The electromagnetic coil body 1 is inserted into the ECU housing 9 via electrode pins 4 and is electrically connected to a circuit board located inside the ECU housing 9. A pin support bracket 3 is fixed to one end of the electromagnetic coil body 1 facing the ECU housing 9. One end of the electrode pin 4 passes through the pin support bracket 3 and is electrically connected to the coil of the electromagnetic coil body 1. The other end extends into an insertion slot opened on the ECU housing 9 after two bends. A shock-absorbing pad 2 is also fixed to one end of the electromagnetic coil body 1 near the ECU housing 9. The shock-absorbing pad 2 and the pin support bracket 3 are arranged symmetrically. A receiving groove is opened on the ECU housing 9 at the position corresponding to the position of the shock-absorbing pad 2, and the shock-absorbing pad 2 is placed inside the receiving groove.

[0030] The electrode pin 4 includes an axial lead-out section 41, a radial extension section 42, and an axial insertion section 43 connected in sequence. The radial extension section 42 extends away from the electromagnetic coil body 1 at one end near the axial insertion section 43. A tapered insertion head 44 is fixed at one end of the axial insertion section 43 near the radial lead-out section. The tip of the tapered insertion head 44 extends into the insertion slot and is interference-fitted with the insertion slot. The flat end of the tapered insertion head 44 is flush with the surface of the insertion slot.

[0031] The flat end of the tapered insert head 44 is 2mm away from the bend between the radial extension section 42 and the axial insert section 43, and the vertical distance between the flat end of the tapered insert head 44 and the bottom end of the shock-absorbing pad 2 is 0.5mm-1mm.

[0032] Electrode pin 4 is formed by a terminal bending process.

[0033] like Figure 2 and Figure 3 As shown, an assembly device is used to assemble an assembly structure of a solenoid valve coil and an ECU housing 9. It includes a robotic arm and a pin positioning cylinder 5 and a coil support positioning cylinder 7 fixed to the end of the robotic arm via a mounting plate 6. The end of the pin positioning cylinder 5 is fixed with a pin protection plate 8. The pin protection plate 8 has a clearance groove 81 at the position corresponding to the electrode pin 4. The bottom end of the clearance groove 81 is pressed against the top end of the conical insertion head 44. The end of the coil support positioning cylinder 7 is fixed with a support head that matches the center hole 11 at the top end of the solenoid coil body 1.

[0034] Assembly process: The robotic arm moves the pin positioning cylinder 5 and the coil support positioning cylinder 7 toward the solenoid valve coil to be assembled until the support head extends into the center hole 11 of the solenoid coil body 1. The coil support positioning cylinder 7 is opened, causing the support head to tighten the center hole 11 of the solenoid coil body 1. Then, the pin positioning cylinder 5 drives the pin protection plate 8 to extend, so that the electrode pin 4 extends into the clearance groove 81 until the bottom end of the clearance groove 81 contacts the top end of the conical insertion head 44. The robotic arm moves again to move the solenoid coil toward the ECU housing 9, so that the electrode pin 4 of the solenoid coil is inserted into the insertion slot of the ECU housing 9, and the shock-absorbing pad 2 is inserted into the receiving slot. At this time, the electrode pin 4 contacts the circuit board to achieve electrical connection, thus completing the assembly. The robotic arm resets and waits for the next action.

[0035] It should be noted that the structural principle of the aforementioned robotic arm is common knowledge in this field, and therefore will not be elaborated upon here.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. An assembly structure for a solenoid valve coil and an ECU housing, comprising a solenoid coil body and an ECU housing, wherein the solenoid coil body is inserted into the ECU housing via electrode pins and is electrically connected to a circuit board located inside the ECU housing, characterized in that: A pin support bracket is fixed at one end of the electromagnetic coil body facing the ECU housing. One end of the electrode pin passes through the pin support bracket and is electrically connected to the coil of the electromagnetic coil body. The other end extends into the insertion slot opened on the ECU housing after two bends. A shock-absorbing pad is also fixed to one end of the electromagnetic coil body near the ECU housing. The shock-absorbing pad is arranged symmetrically with the pin support frame. An accommodating groove is provided on the ECU housing at the position corresponding to the shock absorber, and the shock absorber is placed inside the accommodating groove.

2. The assembly structure of a solenoid valve coil and an ECU housing according to claim 1, characterized in that: The electrode pins include an axial lead-out section, a radial extension section, and an axial insertion section connected in sequence. The radial extension section extends away from the electromagnetic coil body at one end near the axial insertion section. A tapered insertion head is fixed at one end of the axial insertion section near the radial lead-out section. The tip of the tapered insertion head extends into the insertion slot and is interference-fitted with the insertion slot. The flat end of the tapered insertion head is flush with the surface of the insertion slot.

3. The assembly structure of the solenoid valve coil and the ECU housing according to claim 2, characterized in that: The flat end of the tapered insert head is 2mm away from the bend between the radial extension section and the axial insert section, and the vertical distance between the flat end of the tapered insert head and the bottom end of the shock-absorbing pad is 0.5mm-1mm.

4. The assembly structure of a solenoid valve coil and an ECU housing according to claim 2, characterized in that: The electrode leads are formed by a terminal bending process.

5. An assembly device, characterized in that: An assembly structure for assembling an electromagnetic valve coil and an ECU housing according to any one of claims 2-4 includes a robotic arm and a pin positioning cylinder and a coil support positioning cylinder fixed to the end of the robotic arm via a mounting plate. The end of the pin positioning cylinder is fixed with a pin protection plate, and a clearance groove is provided on the pin protection plate at the position corresponding to the electrode pin. The bottom end of the clearance groove is pressed against the top end of the conical insertion head. The end of the coil support positioning cylinder is fixed with a support head that matches the center hole at the top end of the electromagnetic coil body.

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