Automobile electromagnetic valve coil, electromagnetic valve and electromagnetic valve mounting structure

Abstract

The utility model belongs to the technical field of automobile electromagnetic valves, and particularly relates to an automobile electromagnetic valve coil, an electromagnetic valve and an electromagnetic valve installation structure. The automobile electromagnetic valve coil comprises a framework, a coil and a shell, the coil is wound on the framework, and the shell wraps the framework and the coil. A dragging wire is arranged on the shell, the fixed end of the dragging wire is connected to the shell, an electric connector is arranged at the free end of the dragging wire, and the electric connector is electrically connected with the coil through the dragging wire. The electric connector is indirectly connected to the shell through the dragging line, the installation position of the electric connector relative to the electromagnetic valve is adjustable by pulling the free end of the dragging line, then the electric connector is pulled to the position with enough installation space to be connected with a vehicle power line, the installation space of the electromagnetic valve body is saved, the design and installation efficiency is improved, and cost is saved. The sealing gasket is arranged, the sealing ring is additionally arranged between the electromagnetic valve installation base and the electromagnetic valve shell, the waterproof grade of the electromagnetic valve installation structure is improved, the electromagnetic valve, the dragging line and the electric connector are circumferentially positioned, and the service life of the electromagnetic valve is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive solenoid valves, and particularly relates to an automotive solenoid valve coil, a solenoid valve, and a solenoid valve installation structure. Background Art

[0002] A solenoid valve is a commonly used electric actuator in an automotive control system, and is applied to structures such as a braking system, an electromagnetic air pump, and an automotive shock absorber. The solenoid valve includes an electromagnetic coil and a valve core. When the electromagnetic coil is energized, a magnetic field is generated to move the valve core to change the size or opening / closing state of the fluid passage in the valve body, so as to control the flow rate and flow path of the fluid.

[0003] The solenoid valve coil is a very important component structure in the solenoid valve. For example, the Chinese utility model patent with the publication number CN116951043A discloses a pilot valve of a shock absorber solenoid valve, which records that the electromagnetic coil assembly is assembled with structures such as the outer shell of the solenoid valve and the valve core to form a complete solenoid valve. The electromagnetic coil assembly is installed at one end of the outer shell and protrudes. Among them, an electrical connector integrally formed with the electromagnetic coil assembly is provided on the electromagnetic coil assembly. The electrical connector is located outside the outer shell, and a relatively large installation space is required at the solenoid valve. In addition, an installation space for inserting and connecting the electrical connector of the solenoid valve and the vehicle power line needs to be reserved, further increasing the installation space required by the solenoid valve. Especially when the installation space on the automotive chassis is limited, the type, installation direction, and installation position of the electrical connector cannot be adjusted, and the solenoid valve is prone to interference with other parts on the chassis, and the installation layout of the chassis needs to be adjusted, which brings inconvenience to the design and assembly of the parts on the automotive chassis and reduces the design and production efficiency.

[0004] The Chinese utility model patents with the publication numbers CN212273214U and CN212062134U respectively disclose an automotive solenoid valve coil. The solenoid valve coil structures recorded in the above documents both include a skeleton, a coil wound around the skeleton, and an outer shell covering the skeleton. An electrical connector is provided on the outer shell, and the outer shell and the electrical connector are integrally injection molded. A power connection terminal electrically connected to the coil is provided in the electrical connector. Although the sleeve in the utility model with the publication number CN212062134U extends radially along the outer shell to reduce the height of the solenoid valve coil, the electrical connector is still an integral structure integrally formed with the outer shell and its arrangement position cannot be adjusted. The problem that a relatively large installation space is still required for the solenoid valve and it brings inconvenience to the design and assembly of adjacent parts has not been solved. Summary of the Utility Model

[0005] The technical problems to be solved by the present utility model are as follows: to provide an automotive solenoid valve coil with an adjustable installation position of the electrical connector, saving the installation space at the solenoid valve, facilitating the design and assembly of the solenoid valve and its adjacent components, and improving production efficiency; to provide a solenoid valve and a solenoid valve installation structure, improving the waterproofness of the solenoid valve installation structure while circumferentially positioning the trailing wire, prolonging the service life of the solenoid valve and the solenoid valve mounting seat, and saving costs.

[0006] The technical solution adopted by the present utility model to solve the above technical problems is: an automotive solenoid valve coil, comprising a bobbin, a coil and a coil housing, wherein the coil is wound around the bobbin, and the coil housing covers the bobbin and the coil;

[0007] A trailing wire is provided on the coil housing, the fixed end of the trailing wire is connected to the coil housing, and an electrical connector is provided at the free end of the trailing wire. The electrical connector is electrically connected to the coil through the trailing wire.

[0008] Furthermore, an annular wire groove is provided on the bobbin, and the groove diameter of the annular wire groove is arranged radially outward; the coil is located in the annular wire groove and is coaxially arranged with the annular wire groove.

[0009] Furthermore, it further includes a magnetic conductive ring sleeved and connected on the coil housing.

[0010] Furthermore, the electrical connector is crimped to the free end of the trailing wire and is electrically connected to the trailing wire.

[0011] Furthermore, the bobbin, the coil, the trailing wire and the magnetic conductive ring are vulcanized and encapsulated into an integral structure through the coil housing.

[0012] Furthermore, the material of the coil housing is thermoplastic resin.

[0013] Furthermore, the inner wall of the coil housing encloses an accommodating space, the coil is sleeved outside the accommodating space, and one end of the coil housing close to the coil has an opening communicating with the accommodating space.

[0014] An automotive solenoid valve, comprising a solenoid valve housing in a cylindrical structure, a magnetic core assembly arranged in the solenoid valve housing, and the automotive solenoid valve coil;

[0015] A first annular clamping groove is provided on the outer peripheral surface of the coil housing, a second annular clamping groove is provided on the inner wall of the solenoid valve housing, a snap ring is arranged in the first annular clamping groove, and the snap ring is axially clamped with the second annular clamping groove;

[0016] The coil is located in the solenoid valve housing, and the magnetic core assembly is located in the accommodating space.

[0017] Furthermore, a first annular part and a second annular part are sleeved and connected to the upper part of the automotive solenoid valve coil. The second annular part and the first annular part are arranged adjacent to each other vertically, and the outer peripheral surface of the second annular part protrudes from the outer peripheral surface of the first annular part. The coil housing, the first annular part, and the second annular part are an integrally formed integral structure.

[0018] A sealing sleeve is sleeved on the outer periphery of the first annular part. The inner wall of the sealing sleeve is hermetically connected to the outer side surface of the first annular part. A sealing gasket is provided between the upper end surface of the sealing sleeve and the lower end surface of the second annular part and is hermetically connected through the sealing gasket. There is an annular space between the sealing sleeve and the solenoid valve housing.

[0019] An installation structure of an automotive solenoid valve includes the automotive solenoid valve and a solenoid valve mounting seat in a cylindrical structure. An annular sealing groove is provided on the outer peripheral surface of the solenoid valve mounting seat, and a sealing ring is installed in the sealing groove.

[0020] The solenoid valve mounting seat is inserted into the annular space between the sealing sleeve and the solenoid valve housing. The inner wall of the solenoid valve mounting seat abuts against the solenoid valve housing, and the outer wall of the solenoid valve mounting seat is hermetically connected to the sealing sleeve through the sealing ring.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows: An automotive solenoid valve coil is provided. By setting a trailing wire, the electrical connector is indirectly connected to the housing. When there is insufficient installation space at the solenoid valve, the free end of the trailing wire can be pulled to adjust the installation position of the electrical connector relative to the solenoid valve, and the electrical connector can be pulled to a position with sufficient installation space to be connected to the vehicle power line, saving the installation space at the solenoid valve body, improving the design and installation efficiency, and saving costs. The electrical connection between the electrical connector and the trailing wire is made by crimping, enabling the solenoid valve to flexibly replace the electrical connector, further saving production costs.

[0022] An automotive solenoid valve and an installation structure of an automotive solenoid valve are provided. By setting a sealing gasket to seal the space between the sealing sleeve and the second annular part, and by adding a sealing ring between the solenoid valve mounting seat and the solenoid valve housing to seal the space between the sealing sleeve and the solenoid valve housing, the waterproof level of the solenoid valve installation structure is further improved, and the service life of the solenoid valve and the solenoid valve mounting seat is prolonged. By setting the sealing ring to be in sealing contact with the sealing sleeve, the solenoid valve, the trailing wire, and the electrical connector are circumferentially positioned, preventing the solenoid valve from rotating relative to the solenoid valve mounting seat, avoiding the trailing wire from rotating and rubbing against other structures on the chassis, and prolonging the service life of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of an embodiment of an automotive solenoid valve coil;

[0024] Figure 2It is a schematic assembly structure diagram of an automotive solenoid valve coil, a solenoid valve housing, and a magnetic core assembly;

[0025] Figure 3 It is Figure 2 a schematic disassembly structure diagram of the automotive solenoid valve coil and the solenoid valve housing in [[ ]];

[0026] Figure 4 It is a schematic structure diagram of an embodiment of an automotive solenoid valve;

[0027] Figure 5 It is Figure 4 a schematic disassembly structure diagram of the solenoid valve, the gasket, and the seal sleeve in [[ ]];

[0028] Figure 6 It is a schematic structure diagram of a solenoid valve installation structure;

[0029] Figure 7 It is Figure 6 a schematic enlarged structure diagram of part A in [[ ]];

[0030] Reference numerals: 1 - bobbin; 2 - coil; 3 - coil housing; 31 - accommodating space; 33 - first annular clamping groove; 34 - first annular part 34; 35 - second annular part; 4 - trailing wire; 5 - electrical connector; 6 - magnetic conduction ring; 7 - seal sleeve; 71 - gasket; 8 - solenoid valve mounting seat; 81 - sealing groove; 82 - sealing ring; 91 - solenoid valve housing; 92 - magnetic core shaft; 93 - snap ring; 94 - second annular clamping groove. Detailed implementation manners

[0031] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as limiting the present utility model.

[0032] As shown in the attached Figures 1-7 drawing, an automotive solenoid valve coil includes a bobbin 1, a coil 2, and a coil housing 3. The coil 2 is wound around the bobbin 1, and the coil housing 3 covers the bobbin 1 and the coil 2. A trailing wire 4 is provided on the coil housing 3. The fixed end of the trailing wire 4 is connected to the coil housing 3, and an electrical connector 5 is provided at the free end of the trailing wire 4. The electrical connector 5 is electrically connected to the coil 2 through the trailing wire 4.

[0033] The coil housing 3 of the present utility model is installed at one end of the solenoid valve housing 91. The trailing wire 4 is located outside the solenoid valve housing 91. The solenoid valve housing 91 is of a cylindrical structure, and an auxiliary positioning structure for installing the magnetic core shaft 92 and its components is provided on its inner wall. When installing the solenoid valve with the structure of the present utility model, even when the installation space is small, there is no need to change the installation positions of adjacent components. The free end of the trailing wire 4 can be pulled to adjust the installation position of the electrical connector 5, and the electrical connector 5 can be pulled to a position with sufficient installation space to be electrically connected to the power line, saving the installation space at the solenoid valve body, improving the design and installation efficiency, and saving costs.

[0034] The bobbin 1 is used for installing the coil 2, and generally has an annular wire groove. The annular wire groove is used to position the coil on the bobbin 1. The opening of the annular wire groove can be arranged radially or axially upward. Preferably, the groove diameter of the annular wire groove is arranged radially outward. The coil 2 is located in the annular wire groove and is coaxially arranged with the annular wire groove, which is convenient for winding and installing the coil 2. The coil 2 is used to generate a magnetic field after being energized to attract or repel the magnetic core assembly on the solenoid valve. The magnetic core shaft 92 moves synchronously with the magnetic core assembly and drives the valve core to reciprocate axially.

[0035] Using the above solenoid valve coil may result in insufficient magnetic permeability of the solenoid valve magnetic circuit and ineffective concentration of magnetic lines of force, affecting the working efficiency and performance of the solenoid valve. To meet the use requirements, more copper wires need to be used to make the coil 2. While the cost increases, there is also a risk of the coil 2 overheating and burning out. Generally, the above problems can be solved by thickening the solenoid valve housing 91, adding a magnetic conduction structure between the inner surface of the solenoid valve housing 91 and the coil 2, etc. Preferably, a magnetic conduction ring 6 sleeved and connected on the coil housing 3 is further included. When assembling the solenoid valve, the magnetic conduction ring 6 is located between the solenoid valve housing 91 and the coil 2. The magnetic conduction ring 6 and the solenoid valve housing 91 form a closed magnetic circuit, significantly improving the magnetic conduction performance of the magnetic circuit and the working efficiency of the solenoid valve; the amount of copper material required to make the coil 2 is reduced, saving costs and improving the reliability of the solenoid valve. The magnetic conduction ring 6 can be installed on the outer peripheral surface of the coil housing 3 by means of hoop connection, snap connection, bonding, etc.

[0036] The trailing wire 4 is used to connect the electrical connector 5 to the housing 1, so that the distance and position of the electrical connector 5 relative to the housing 1 are adjustable. The trailing wire 4 can be led out from the end face of the housing 1 or from the side face of the housing 1. The leading-out position of the trailing wire 4 is determined according to the vehicle layout space. The solenoid valve on the vehicle shock absorber is horizontally installed on the shock absorber. At this time, to further reduce the length of the solenoid valve in the horizontal direction, preferably, the trailing wire 4 is led out from the side face of the housing 3, further reducing the installation space required at the solenoid valve.

[0037] The electrical connector 5 is used for electrically connecting with the vehicle power line. It has a terminal, and the terminal can be a male end with a convex structure or a female end with a notch structure. The electrical connector 5 can be connected to the free end of the trailing wire 4 by an integrally injection-molded method, but this structure cannot replace the electrical connector 5 at any time according to requirements. Preferably, the electrical connector 5 is crimped to the free end of the trailing wire 4 and electrically connected to the trailing wire 4, and different models of electrical connectors 5 can be replaced according to the actual situation, which is more convenient and flexible.

[0038] The coil housing 3 is generally made of plastic. It is used to protect the bobbin 1 and the coil 2 and integrate the bobbin 1, the coil 2, the trailing wire 4, and the magnetic conductive ring 6 into a whole structure. It is also used to assemble and connect the whole solenoid valve coil with the solenoid valve housing 91 to form a solenoid valve. The bobbin 1, the coil 2, the trailing wire 4, and the magnetic conductive ring 6 are vulcanized and encapsulated into an integral structure through the coil housing 3. As a further preference, the material of the coil housing 3 is thermoplastic resin, such as polyethylene, polypropylene, polyamide and other materials. These materials have high stiffness and strength, excellent wear resistance, corrosion resistance and temperature resistance, and can extend the service life of the solenoid valve coil and the solenoid valve.

[0039] The coil housing 3 of the above-mentioned automotive solenoid valve coil has various structural forms, such as a columnar structure, a cylindrical structure, etc. Specifically, the inner wall of the coil housing 3 encloses an accommodation space 31, the coil 2 is sleeved outside the accommodation space 31, and one end of the coil housing 3 close to the coil 2 has an opening communicating with the accommodation space 31. The accommodation space 31 is used to accommodate the auxiliary positioning structure and the magnetic core assembly in the solenoid valve housing 91, and the auxiliary positioning structure and the magnetic core assembly in the solenoid valve housing 91 are inserted and installed into the accommodation space 31 through the opening of the accommodation space 31.

[0040] An automotive solenoid valve includes a cylindrical solenoid valve housing 91, a magnetic core assembly arranged in the solenoid valve housing 91, and the above-mentioned automotive solenoid valve coil with an accommodation space. The automotive solenoid valve coil can be installed on the solenoid valve housing 91 by means of riveting, interference crimping, bolt connection, vulcanization bonding, screw connection, etc. Preferably, a first annular clamping groove 33 is provided on the outer peripheral surface of the coil housing 3, a second annular clamping groove 94 is provided on the inner wall of the solenoid valve housing 91, a snap ring 93 is arranged in the first annular clamping groove 33, and the snap ring 93 is axially clamped with the second annular clamping groove 94; the coil 2 is located in the solenoid valve housing 91, and the magnetic core assembly is located in the accommodation space 31. The snap ring 93 is simultaneously clamped in the first annular clamping groove 33 and the second annular clamping groove 94 on the inner wall of the solenoid valve housing 91 to axially position and install the automotive solenoid valve coil on the solenoid valve housing 91.

[0041] An electromagnetic valve mounting seat 8 for mounting an electromagnetic valve is provided on each of the actuators such as an automotive shock absorber. The electromagnetic valve mounting seat 8 has a cylindrical structure, and the electromagnetic valve is plugged onto the electromagnetic valve mounting seat 8. Most of the electromagnetic valves mounted on the vehicle chassis are exposed. When driving in rainy days or in wading sections, the gap at the connection between the electromagnetic valve and the electromagnetic valve mounting seat 8 is likely to let water in, causing the electromagnetic valve and the electromagnetic valve mounting seat 8 to rust, which affects the service life of the electromagnetic valve and the shock absorber. Therefore, a waterproof structure for sealing connection with the electromagnetic valve mounting seat 8 is generally provided on the electromagnetic valve. Currently, the waterproof structure is mainly a sealing ring provided between the electromagnetic valve mounting seat 8 and the electromagnetic valve housing 91. Preferably, a first annular portion 34 and a second annular portion 35 are sleeved and connected on the upper part of the automotive electromagnetic valve coil. The second annular portion 35 and the first annular portion 34 are arranged adjacent to each other up and down, and the outer peripheral surface of the second annular portion 35 protrudes from the outer peripheral surface of the first annular portion 34; the coil housing 3, the first annular portion 34 and the second annular portion 35 are an integrally formed integral structure; a sealing sleeve 7 is sleeved on the outer periphery of the first annular portion 34, and the inner wall of the sealing sleeve 7 is sealingly connected to the outer side surface of the first annular portion 34. A sealing gasket 71 is provided between the upper end surface of the sealing sleeve 7 and the lower end surface of the second annular portion 35 and is sealingly connected through the sealing gasket 71; there is an annular space between the sealing sleeve 7 and the electromagnetic valve housing 91. When installing the electromagnetic valve, the electromagnetic valve and the electromagnetic valve mounting seat 8 are inserted into each other, and the electromagnetic valve mounting seat 8 is inserted into the annular space between the sealing sleeve 7 and the electromagnetic valve housing 91. The sealing gasket 71 is used to block the gap between the sealing sleeve 7 and the second annular portion 35, preventing water from entering the gap between the electromagnetic valve mounting seat 8 and the electromagnetic valve housing 91 along this gap.

[0042] An automotive electromagnetic valve mounting structure includes a cylindrical electromagnetic valve mounting seat 8 and the above-mentioned automotive electromagnetic valve; an annular sealing groove 81 is provided on the outer peripheral surface of the electromagnetic valve mounting seat 8, and a sealing ring 82 is installed in the sealing groove 81; the electromagnetic valve mounting seat 8 is inserted into the annular space between the sealing sleeve 7 and the electromagnetic valve housing 91, the inner wall of the electromagnetic valve mounting seat 8 abuts against the electromagnetic valve housing 91, and the outer wall of the electromagnetic valve mounting seat 8 is sealingly connected to the sealing sleeve 7 through the sealing ring 82. This structure further improves the waterproof level of the electromagnetic valve mounting structure, extends the service life of the electromagnetic valve and the electromagnetic valve mounting seat 8, and saves costs by adding a sealing ring 82 between the electromagnetic valve mounting seat 8 and the electromagnetic valve housing 91 to prevent water from entering the gap between the electromagnetic valve mounting seat 8 and the electromagnetic valve housing 91 from the gap at the end of the electromagnetic valve mounting seat 8 and the sealing sleeve 7 away from the second annular portion 35. In addition, by providing the sealing ring 82, the sealing ring 82 is in sealing contact with the sealing sleeve 7 to position the electromagnetic valve, the trailing wire 4 and the electrical connector 5 on the electromagnetic valve coil in the circumferential direction, preventing the electromagnetic valve from rotating relative to the electromagnetic valve mounting seat 8, and further avoiding the trailing wire from rotating and rubbing against other structures on the chassis, thus extending the service life of the electromagnetic valve.

[0043] The embodiments of this specific implementation manner are all preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. A solenoid valve coil for an automobile, comprising a frame (1), a coil (2) and a coil housing (3), wherein the coil (2) is wound on the frame (1), and the coil housing (3) covers the frame (1) and the coil (2); characterized in that: The coil housing (3) is provided with a tow line (4), the fixed end of the tow line (4) is connected to the coil housing (3), the free end of the tow line (4) is provided with an electrical connector (5), and the electrical connector (5) is electrically connected to the coil (2) through the tow line (4).

2. The automotive solenoid valve coil according to claim 1, characterized in that: The frame (1) is provided with an annular wire groove, the groove opening of which is arranged radially outward; the coil (2) is located in the annular wire groove and is arranged coaxially with the annular wire groove.

3. The automotive solenoid valve coil according to claim 1, characterized in that: It also includes a magnetic conductive ring (6) sleeved and connected to the coil housing (3).

4. The automotive solenoid valve coil according to claim 1, characterized in that: The electrical connector (5) is crimped onto the free end of the tow line (4) to be electrically connected to the tow line (4).

5. The automobile solenoid valve coil according to claim 3, characterized in that: The skeleton (1), the coil (2), the tow line (4) and the magnetic conductive ring (6) are vulcanized and encapsulated by the coil housing (3) to form an integrated structure.

6. The automobile solenoid valve coil according to claim 5, characterized in that: The material of the coil housing (3) is thermoplastic resin.

7. The automotive solenoid valve coil according to any one of claims 1 to 6, characterized in that: The inner wall of the coil housing (3) forms a containing space (31), the coil (2) is sleeved outside the containing space (31), and one end of the coil housing (3) close to the coil (2) has an opening connected to the containing space (31).

8. An automobile solenoid valve, comprising a solenoid valve housing (91) of a cylindrical structure, a magnetic core assembly arranged in the solenoid valve housing (91), and the automobile solenoid valve coil according to claim 7, characterized in that: A first annular groove (33) is provided on the outer circumferential surface of the coil housing (3), a second annular groove (94) is provided on the inner wall of the solenoid valve housing (91), a retaining spring (93) is provided in the first annular groove (33), and the retaining spring (93) is axially engaged with the second annular groove (94); The coil (2) is located in the solenoid valve housing (91), and the magnetic core component is located in the accommodating space (31).

9. The automobile solenoid valve according to claim 8, characterized in that: The upper part of the automobile solenoid valve coil is sleeved with a first annular portion (34) and a second annular portion (35), the second annular portion (35) and the first annular portion (34) are arranged adjacent to each other up and down, and the outer circumference of the second annular portion (35) protrudes from the outer circumference of the first annular portion (34); the coil housing (3), the first annular portion (34) and the second annular portion (35) are an integral structure formed in one piece; A sealing sleeve (7) is provided on the outer periphery of the first annular portion (34); the inner wall of the sealing sleeve (7) is sealedly connected to the outer side surface of the first annular portion (34); a sealing gasket (71) is provided between the upper end surface of the sealing sleeve (7) and the lower end surface of the second annular portion (35) and is sealedly connected via the sealing gasket (71); and an annular space is provided between the sealing sleeve (7) and the solenoid valve housing (91).

10. An automobile solenoid valve mounting structure, comprising the automobile solenoid valve according to claim 9 and a solenoid valve mounting seat (8) of a cylindrical structure, characterized in that: An annular sealing groove (81) is provided on the outer peripheral surface of the solenoid valve mounting seat (8), and a sealing ring (82) is installed in the sealing groove (81); The solenoid valve mounting seat (8) is inserted into the annular space between the sealing sleeve (7) and the solenoid valve housing (91), the inner wall of the solenoid valve mounting seat (8) is in contact with the solenoid valve housing (91), and the outer wall of the solenoid valve mounting seat (8) is sealedly connected to the sealing sleeve (7) via the sealing ring (82).

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