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

Abstract

The invention 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 mounting 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 invention belongs to the technical field of automobile solenoid valves, and in particular relates to an automobile solenoid valve coil, a solenoid valve and a solenoid valve installation structure. Background Art

[0002] Solenoid valves are commonly used electric actuators in automobile control systems. They are used in brake systems, electromagnetic air pumps, automobile shock absorbers, etc. Solenoid valves consist of electromagnetic coils and valve cores. When the electromagnetic coils are energized, they generate a magnetic field to move the valve core, changing the size or opening and closing state of the fluid channel in the valve body, thereby controlling the flow rate and flow path of the fluid.

[0003] The solenoid valve coil is an extremely important component structure of the solenoid valve. For example, the Chinese invention patent with the publication number CN116951043A discloses a pilot valve of a shock absorber solenoid valve, which records that the solenoid coil assembly is assembled through the solenoid valve shell and valve core and other structures to form a complete solenoid valve. The solenoid coil assembly is installed at one end of the shell and protrudes, wherein the solenoid coil assembly is provided with an electrical connector integrally formed therewith, and the electrical connector is located outside the shell, and the installation space required at the solenoid valve is relatively large. In addition, it is necessary to reserve installation space for the electrical connector of the solenoid valve to be plugged into the vehicle power cord, further increasing the installation space required for the solenoid valve. Especially when the installation space of the automobile chassis is limited, the model, installation direction and installation position of the electrical connector cannot be adjusted, and the solenoid valve is easy to interfere 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 parts on the automobile chassis, and reduces the design and production efficiency.

[0004] The Chinese invention patents with publication numbers CN212273214U and CN212062134U respectively disclose a type of automobile solenoid valve coil. The automobile solenoid valve coil structures recorded in the above documents all include a skeleton, a coil wound on the skeleton, and a shell covering the skeleton. The shell is provided with an electrical connector, and the shell and the electrical connector are integrally injection molded. The electrical connector is provided with an electrical terminal electrically connected to the coil. Although the sleeve in the invention with publication number CN212062134U extends radially along the shell to reduce the height of the solenoid valve coil, the electrical connector is still an integral structure integrally molded with the shell and its layout position cannot be adjusted. The installation space required for the solenoid valve is still large, and the problem of inconvenience in the design and assembly of adjacent components has not been solved. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to provide an automobile solenoid valve coil with an adjustable electrical connector installation position, thereby saving 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, thereby improving the waterproofness of the solenoid valve installation structure while positioning the tow line circumferentially, extending the service life of the solenoid valve and the solenoid valve mounting seat, and saving costs.

[0006] The technical solution adopted by the present invention to solve the technical problem is: an automobile solenoid valve coil, comprising a frame, a coil and a coil housing, the coil is wound on the frame, and the coil housing covers the frame and the coil;

[0007] The coil housing is provided with a towing wire, the fixed end of the towing wire is connected to the coil housing, the free end of the towing wire is provided with an electric connector, and the electric connector is electrically connected to the coil through the towing wire.

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

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

[0010] Furthermore, the electrical connector is crimped onto the free end of the tow line and is electrically connected to the tow line.

[0011] Furthermore, the skeleton, the coil, the tow line and the magnetic conductive ring are formed into an integrated structure by vulcanization encapsulation of the coil shell.

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

[0013] Furthermore, the inner wall of the coil housing forms 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 connected to the accommodating space.

[0014] The automobile solenoid valve having the automobile solenoid valve coil comprises a solenoid valve housing of a cylindrical structure and a magnetic core assembly arranged in the solenoid valve housing;

[0015] A first annular groove is provided on the outer circumferential surface of the coil housing, a second annular groove is provided on the inner wall of the solenoid valve housing, a retaining spring is provided in the first annular groove, and the retaining spring is axially engaged with the second annular groove;

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

[0017] Furthermore, the upper part of the automobile solenoid valve coil is sleeved with a first annular portion and a second annular portion, the second annular portion and the first annular portion are arranged adjacent to each other up and down, and the outer circumference of the second annular portion protrudes from the outer circumference of the first annular portion; the coil housing, the first annular portion and the second annular portion are an integral structure formed in one piece;

[0018] A sealing sleeve is provided on the outer periphery of the first annular portion, and the inner wall of the sealing sleeve is sealedly connected to the outer side surface of the first annular portion. A sealing gasket is provided between the upper end surface of the sealing sleeve and the lower end surface of the second annular portion and is sealedly connected through the sealing gasket; an annular space is provided between the sealing sleeve and the solenoid valve housing.

[0019] The automobile solenoid valve installation structure comprises a solenoid valve installation seat with a cylindrical structure, an annular sealing groove is provided on the outer peripheral surface of the solenoid valve installation seat, and a sealing ring is installed in the sealing groove;

[0020] The solenoid valve mounting seat is inserted in 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 sealed and connected with the sealing sleeve through the sealing ring.

[0021] Compared with the prior art, the beneficial effects of the present invention are: providing an automobile solenoid valve coil, by setting a tow line to indirectly connect the electric connector to the housing, when the installation space at the solenoid valve is insufficient, the free end of the tow line can be pulled to adjust the installation position of the electric connector relative to the solenoid valve, and the electric connector is pulled to a position with sufficient installation space to connect with the vehicle power line, saving the installation space at the solenoid valve body, improving the design and installation efficiency, and saving costs. The electric connector and the tow line are electrically connected by crimping, so that the solenoid valve can flexibly replace the electric connector, further saving production costs.

[0022] Provided are an automobile solenoid valve and an automobile solenoid valve installation structure. By arranging a sealing gasket to block the space between the sealing sleeve and the second annular portion, and by adding a sealing ring between the solenoid valve mounting seat and the solenoid valve housing to block 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 extended. By arranging a sealing ring so that the sealing ring and the sealing sleeve are in sealing contact, the solenoid valve, the tow line and the electrical connector are positioned in the circumferential direction, the solenoid valve is prevented from rotating relative to the solenoid valve mounting seat, and the tow line is prevented from rotating and rubbing against other structures on the chassis, thereby extending the service life of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0025] Figure 3 yes Figure 2 Schematic diagram of the split structure of the automobile solenoid valve coil and the solenoid valve housing;

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

[0027] Figure 5 yes Figure 4 Schematic diagram of the disassembled structure of the solenoid valve, sealing gasket and sealing sleeve;

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

[0029] Figure 7 yes Figure 6 A schematic diagram of the enlarged structure of the middle part A;

[0030] Figure markings: 1-skeleton; 2-coil; 3-coil housing; 31-accommodating space; 33-first annular groove; 34-first annular portion 34; 35-second annular portion; 4-drag line; 5-electric connector; 6-magnetic ring; 7-sealing sleeve; 71-sealing gasket; 8-solenoid valve mounting seat; 81-sealing groove; 82-sealing ring; 91-solenoid valve housing; 92-magnetic core shaft; 93-circlip; 94-second annular groove. DETAILED DESCRIPTION

[0031] The present invention is 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 invention, and should not be construed as limiting the present invention.

[0032] As attached Figure 1-7 As shown, a solenoid valve coil for an automobile comprises a skeleton 1, a coil 2 and a coil housing 3, wherein the coil 2 is wound on the skeleton 1, and the coil housing 3 covers the skeleton 1 and the coil 2; a tow line 4 is provided on the coil housing 3, a fixed end of the tow line 4 is connected to the coil housing 3, an electric connector 5 is provided on the free end of the tow line 4, and the electric connector 5 is electrically connected to the coil 2 through the tow line 4.

[0033] The coil housing 3 of the present invention is installed at one end of the electromagnetic valve housing 91, and the tow line 4 is located outside the electromagnetic valve housing 91. The electromagnetic valve housing 91 is 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 a solenoid valve having the structure of the present invention, even if the installation space is small, there is no need to change the installation position of adjacent components. The free end of the tow line 4 can be pulled to adjust the installation position of the electric connector 5, and the electric connector 5 can be pulled to a position with sufficient installation space to be electrically connected to the power line, thereby saving the installation space at the electromagnetic valve body, improving the design and installation efficiency, and saving costs.

[0034] The skeleton 1 is used to install the coil 2, and generally has an annular wire groove thereon, which is used to position the coil on the skeleton 1. The opening of the annular wire groove can be arranged radially or axially upward. Preferably, the notch of the annular wire groove is arranged radially outward, and the coil 2 is located in the annular wire groove and arranged coaxially 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 to attract or repel the magnetic core assembly on the electromagnetic valve after power is turned on. The magnetic core shaft 92 moves synchronously with the magnetic core assembly and drives the valve core to reciprocate axially.

[0035] The use of the above-mentioned solenoid valve coil may lead to insufficient magnetic conductivity of the solenoid valve magnetic circuit and the inability to effectively concentrate the magnetic lines of force, which affects the working efficiency and performance of the solenoid valve. In order 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 large-scale heat release and burning of the coil 2. Generally, the above-mentioned problems can be solved by thickening the solenoid valve housing 91 and adding a magnetic conductive structure between the inner surface of the solenoid valve housing 91 and the coil 2. Preferably, it also includes a magnetic conductive ring 6 connected to the coil housing 3. When the solenoid valve is assembled, the magnetic conductive ring 6 is located between the solenoid valve housing 91 and the coil 2. The magnetic conductive ring 6 and the solenoid valve housing 91 form a closed magnetic circuit, which significantly improves the magnetic conductivity of the magnetic circuit and improves the working efficiency of the solenoid valve; the copper material required to make the coil 2 is reduced, which saves costs and improves the reliability of the solenoid valve. The magnetic conductive ring 6 can be installed on the outer peripheral surface of the coil housing 3 by means of hooping, clamping, bonding, etc.

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

[0037] The electric connector 5 is used to electrically connect to the vehicle power line, and has a wiring terminal thereon, which may be a male end with a protruding structure or a female end with a notched structure. The electric connector 5 may be connected to the free end of the tow line 4 by integral injection molding, but this structure cannot replace the electric connector 5 at any time according to demand. Preferably, the electric connector 5 is crimped to the free end of the tow line 4 and electrically connected to the tow line 4, and different types of electric connectors 5 may be replaced according to actual conditions, which is more convenient and flexible.

[0038] The coil housing 3 is generally a plastic structure, which is used to protect the skeleton 1 and the coil 2 and to integrate the skeleton 1, the coil 2, the tow line 4 and the magnetic ring 6 into an integral structure, and is also used to assemble and connect the entire solenoid valve coil with the solenoid valve housing 91 to form a solenoid valve. The skeleton 1, the coil 2, the tow line 4 and the magnetic 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 a thermoplastic resin, such as polyethylene, polypropylene, polyamide and the like. Such materials have high rigidity and strength, excellent wear resistance, corrosion resistance and temperature resistance, and extend the service life of the solenoid valve coil and the solenoid valve.

[0039] The coil housing 3 of the above-mentioned automobile solenoid valve coil has a variety of structural forms, such as a columnar structure, a cylindrical structure, etc. Specifically, the inner wall of the coil housing 3 encloses a receiving space 31, the coil 2 is sleeved outside the receiving space 31, and the end of the coil housing 3 close to the coil 2 has an opening connected to the receiving space 31. The receiving 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 plugged and installed in the receiving space 31 through the opening of the receiving space 31.

[0040] A solenoid valve for automobiles, comprising a solenoid valve housing 91 of a cylindrical structure and a magnetic core assembly arranged in the solenoid valve housing 91, adopting the above-mentioned solenoid valve coil for automobiles with an accommodation space, the solenoid valve coil for automobiles can be installed on the solenoid valve housing 91 by riveting, interference crimping, bolt connection, vulcanization bonding, threaded connection, etc. Preferably, a first annular groove 33 is provided on the outer circumference 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 assembly is located in the accommodation space 31. The retaining spring 93 is simultaneously engaged in the first annular groove 33 and the second annular groove 94 on the inner wall of the solenoid valve housing 91 to axially position the solenoid valve coil for automobiles on the solenoid valve housing 91.

[0041] Automobile shock absorbers and other actuators are all provided with a solenoid valve mounting seat 8 for mounting a solenoid valve. The solenoid valve mounting seat 8 is a cylindrical structure, and the solenoid valve is plugged into the solenoid valve mounting seat 8. Most of the solenoid valves installed on the chassis of the car are exposed to the outside. When driving on rainy days or wading roads, the gap between the solenoid valve and the solenoid valve mounting seat 8 is easy to get water in, causing the solenoid valve and the solenoid valve mounting seat 8 to rust, affecting the service life of the solenoid valve and the shock absorber. Therefore, the solenoid valve is generally provided with a waterproof structure that is sealed and connected to the solenoid valve mounting seat 8. At present, the waterproof structure is mainly a sealing ring arranged between the solenoid valve mounting seat 8 and the solenoid valve housing 91. Preferably, 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 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 integral structure formed in one piece; the outer peripheral surface of the first annular portion 34 is sleeved with a sealing sleeve 7, the inner wall of the sealing sleeve 7 is sealed and connected with 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 sealed and connected through the sealing gasket 71; an annular space is provided between the sealing sleeve 7 and the solenoid valve housing 91. When installing the solenoid valve, the solenoid valve and the solenoid valve mounting seat 8 are plugged into each other, the solenoid valve mounting seat 8 is plugged into the annular space between the sealing sleeve 7 and the solenoid valve housing 91, and the sealing gasket 71 is used to block the gap between the sealing sleeve 7 and the second annular portion 35 to prevent water from entering the gap between the solenoid valve mounting seat 8 and the solenoid valve housing 91 along the gap.

[0042] A solenoid valve mounting structure for automobiles, comprising a solenoid valve mounting seat 8 of a cylindrical structure, and adopting the above-mentioned automobile solenoid valve; 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 sealed and connected with the sealing sleeve 7 through the sealing ring 82. This structure prevents water from entering the gap between the solenoid valve mounting seat 8 and the solenoid valve housing 91 through the gap between the solenoid valve mounting seat 8 and the solenoid valve housing 91 at one end of the sealing sleeve 7 away from the second annular portion 35, thereby further improving the waterproof level of the solenoid valve mounting structure, extending the service life of the solenoid valve and the solenoid valve mounting seat 8, and saving costs. In addition, by setting the sealing ring 82 so that the sealing ring 82 and the sealing sleeve 7 are sealed, the solenoid valve, the drag line 4 on the solenoid valve coil and the electrical connector 5 are positioned in the circumferential direction to prevent the solenoid valve from rotating relative to the solenoid valve mounting seat 8, thereby avoiding the drag line from rotating and rubbing against other structures on the chassis, thereby extending the service life of the solenoid valve.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

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 having the automobile solenoid valve coil according to claim 7, comprising a solenoid valve housing (91) of a tubular structure and a magnetic core assembly arranged in the solenoid valve housing (91), 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. A mounting structure for an automobile solenoid valve according to claim 9, comprising 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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