Split type automotive exhaust electromagnetic valve

Abstract

The utility model discloses a split type vehicle exhaust electromagnetic valve which comprises a coil assembly and a valve body assembly, and the valve body assembly is inserted into the coil assembly in a matched mode and detachably connected with the coil assembly. The overall structure of the vehicle exhaust electromagnetic valve is improved, the structure of the vehicle exhaust electromagnetic valve is changed into a split structure, that is, the vehicle exhaust electromagnetic valve is split into the coil assembly and the valve body assembly, and any one of the parts can be replaced independently when breaking down, so that the frequency of overall replacement of the electromagnetic valve can be reduced, and the cost is reduced. Therefore, the overall service life of the exhaust electromagnetic valve for the vehicle is prolonged, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of automobile electrical accessories, more specifically, it relates to a split type exhaust solenoid valve for vehicle. BACKGROUND

[0002] Exhaust solenoid valve for vehicle is a common automobile electrical accessory, its main role is to discharge exhaust gas, reduce noise, filter exhaust gas. The existing exhaust solenoid valve for vehicle generally adopts integrated structure, uses coil framework to make magnetic separation tube, shell and coil are collectively plastic encapsulation, electromagnetic valve is loaded into coil to form an integral whole, this kind of structure design leads to: once electromagnetic valve body, coil two of any one of them fails, it needs to be replaced as a whole, so that the overall service life of exhaust solenoid valve is short, maintenance cost is high;In the energized state of electromagnetic valve, internal gas high pressure is borne by coil framework, the pressure-bearing capacity of ordinary plastic material coil framework is limited, it is difficult to meet the special needs of system, and damage is prone to occur;Plastic deformation is prone to occur when coil framework operates under harsh high temperature conditions, which leads to the situation that moving iron of electromagnetic valve is stuck or even stuck during action, resulting in electromagnetic valve failure. The utility model patent with announcement number CN205745570U discloses an exhaust solenoid valve, which is sensitive to reaction and quick in action, but the utility model cannot solve the problems of short overall service life and high maintenance cost. SUMMARY

[0003] The existing exhaust solenoid valve for vehicle generally adopts integrated structure, once electromagnetic valve body, coil two of any one of them fails, it needs to be replaced as a whole, so that the overall service life of exhaust solenoid valve is short, maintenance cost is high, in order to overcome this defect, the utility model provides a split type exhaust solenoid valve for vehicle, which can increase the overall service life of exhaust solenoid valve for vehicle and reduce maintenance cost.

[0004] The technical scheme of the utility model is: a split type exhaust solenoid valve for vehicle, comprising a coil assembly and a valve body assembly, the valve body assembly is adapted to be inserted into the coil assembly and detachably connected with the coil assembly. The utility model improves the overall structure of exhaust solenoid valve for vehicle, changes the structure of exhaust solenoid valve for vehicle into split structure, i.e. exhaust solenoid valve for vehicle is split into coil assembly and valve body assembly two parts, any one part failure can be replaced individually, which can reduce the frequency of electromagnetic valve replacement, reduce the consumption speed of accessories, thereby increasing the overall service life of exhaust solenoid valve for vehicle and reducing maintenance cost.

[0005] As preferred, the coil assembly comprises a valve shell and a magnetic frame assembly, the magnetic frame assembly is fixed inside the valve shell, the coil frame is arranged in the magnetic frame assembly, the coil frame is provided with an enameled wire winding and a central cavity through which the valve body assembly can pass. The magnetic frame assembly and the coil frame constitute the mounting frame of the enameled wire winding, the enameled wire winding is assembled with the magnetic frame assembly and the coil frame, and then is loaded into the valve shell, and the valve body assembly is arranged in the central cavity, so that the valve body assembly and the coil assembly are assembled and combined.

[0006] As preferred, the valve shell is made of plastic. Considering factors such as weight, cost and processing difficulty, the valve shell made of plastic is the optimal choice.

[0007] As preferred, the magnetic frame assembly is connected with the valve shell through a glue injection molding structure. The magnetic frame assembly is combined with the valve shell through the glue injection molding structure, so that the assembly steps are reduced, the production efficiency is improved, the labor is saved, and the cost is reduced.

[0008] As preferred, the valve body assembly comprises a valve seat, a static iron provided with an exhaust passage, and a dynamic iron capable of opening and closing the exhaust passage, the static iron is fixed with the valve seat, and the dynamic iron is movably arranged in the valve seat. The dynamic iron is driven to move by electromagnetic force according to the on-off state of the coil assembly, so that the gas passage between the valve seat and the static iron is controlled to be opened and closed, and the exhaust function of the vehicle exhaust electromagnetic valve is ensured.

[0009] As preferred, the valve seat has a valve cavity, one end of the dynamic iron is inserted into the valve cavity, a magnetic isolation pipe is fixed on the outer wall of the valve cavity, one end of the magnetic isolation pipe is fixed with the valve seat, and the other end of the magnetic isolation pipe is fixed with the static iron. The valve seat, the magnetic isolation pipe and the static iron form a closed cavity body, the dynamic iron is accommodated in the cavity body, and the controllable exhaust of gas is realized.

[0010] As preferred, the dynamic iron is provided with sealing pads at two ends. During the movement of the dynamic iron, the two ends are respectively matched with the valve seat and the static iron to switch the gas passage, and the sealing pads can improve the air tightness and better control the opening and closing of the gas passage.

[0011] As preferred, the magnetic isolation pipe is a stainless steel pipe. The pressure bearing capacity of the magnetic isolation pipe made of stainless steel is 10 times that of an ordinary plastic skeleton, so that the pressure bearing capacity of the improved vehicle exhaust electromagnetic valve can be greatly improved; and the stainless steel material is more resistant to high temperature, and the deformation amount caused by temperature change can be ignored, so that the disadvantages of the existing ordinary plastic magnetic isolation pipe are effectively eliminated.

[0012] The utility model discloses the beneficial effect is:

[0013] Increase the overall service life of vehicle exhaust electromagnetic valve, reduce maintenance cost. The utility model discloses the structure of vehicle exhaust electromagnetic valve is split into coil assembly and valve body assembly two parts, any one part failure can be individually replaced, like this can reduce the frequency of electromagnetic valve overall replacement, reduce the accessory consumption rate, thereby increase the overall service life of vehicle exhaust electromagnetic valve, reduce maintenance cost.

[0014] The application improves the pressure bearing capacity and high temperature operation stability of the exhaust electromagnetic valve. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the application.

[0016] Figure 2 It is a front view of the application.

[0017] Figure 3 It is a sectional view of the application.

[0018] Figure 4 It is a structure schematic view of the coil assembly in the application.

[0019] Figure 5 It is a sectional view of the coil assembly in the application.

[0020] Figure 6 It is a structure schematic view of the cooperation between the valve body assembly and the coil assembly in the application.

[0021] Figure 7 It is a structure schematic view of the valve body assembly in the application.

[0022] Figure 8 It is a structure schematic view of the longitudinal section of the valve body assembly in the application.

[0023] Figure 9 It is an exploded view of the coil assembly in the application.

[0024] Figure 10 It is an exploded view of the valve body assembly in the application.

[0025] Figure 11 It is an installation state schematic view of the application.

[0026] In the figure: 1-valve shell, 2-magnetic guide frame assembly, 3-coil framework, 4-enamelled wire winding, 5-valve seat, 6-moving iron, 7-static iron, 8-valve cavity, 9-magnetic isolation tube, 10-sealing gasket, 11-spring, 12-exhaust passage, 13-inlet, 14-outlet hole, 15-exhaust port, 16-exhaust pipe, 17-valve group plate, 18-sealing ring. DETAILED DESCRIPTION

[0027] The application will be further described in combination with the specific embodiments and the drawings.

[0028] Embodiment 1:

[0029] As Figures 1 to 11 shown in the figure, a split type exhaust electromagnetic valve for vehicle includes a coil assembly and a valve body assembly, the valve body assembly is inserted into the coil assembly and can be detached from the coil assembly. The coil assembly includes a valve shell 1, a magnetic yoke assembly 2, a coil skeleton 3 and a enameled wire winding 4, the magnetic yoke assembly 2, the coil skeleton 3 and the enameled wire winding 4 are located inside the valve shell 1. The magnetic yoke assembly 2 is a cuboid frame, including a magnetic yoke in inverted U shape and a bottom cover plate, the bottom end of the magnetic yoke is provided with a bayonet, the both ends of the bottom cover plate are provided with outer convex parts, the outer convex parts are interference fitted with the bayonet, so that the cuboid frame as a whole has a closed top surface, a closed bottom surface and two opposite side surfaces, the other two opposite side surfaces are open structure. The coil skeleton 3 is located in the magnetic yoke assembly 2, the coil skeleton 3 is a rotating body with H-shaped cross section, including a cylindrical skeleton main body and end face discs fixed at the top and bottom ends of the skeleton main body, the end face disc at the top of the coil skeleton 3 abuts against the top of the magnetic yoke assembly 2, i.e. the U-shaped bottom of the magnetic yoke, the end face disc at the bottom of the coil skeleton 3 abuts against the bottom of the magnetic yoke assembly 2, i.e. the top surface of the bottom cover plate. The center of the skeleton main body is provided with a center cavity, the center cavity can contain the valve body assembly to penetrate, the top and bottom ends of the magnetic yoke assembly 2 are also provided with through holes coaxial with the center cavity, to ensure the plug-in cooperation of the valve body assembly and the coil assembly. The enameled wire winding 4 is wrapped around the outer peripheral surface of the coil skeleton 3. When the coil assembly is manufactured, the bottom cover plate is not installed on the magnetic yoke, keeping the bottom end of the magnetic yoke open; the enameled wire winding 4 is formed by winding the coil skeleton 3; the coil skeleton 3 is placed in the U-shaped cavity of the magnetic yoke, then the bottom cover plate is placed at the bottom end of the magnetic yoke, and then a combination of the magnetic yoke assembly 2, the coil skeleton 3 and the enameled wire winding 4 is formed by stamping connection, then the combination is placed into a mold to implement glue injection molding, so that the valve shell 1 is formed at the same time, and the magnetic yoke assembly 2, the coil skeleton 3 and the enameled wire winding 4 are combined with the valve shell 1.

[0030] The valve body assembly comprises a valve seat 5, a moving iron 6, a static iron 7, a magnetic isolation tube 9 and a spring 11. The magnetic isolation tube 9 is connected between the valve seat 5 and the static iron 7. The outer circumferential surface of the valve seat 5 is provided with two steps, forming a radial protrusion. One end of the magnetic isolation tube 9 is fixed with the radial protrusion of the valve seat 5 by extrusion riveting, and the other end of the magnetic isolation tube 9 is fixed with the outer circumferential surface of the static iron 7 by laser welding, thereby forming a closed valve body cavity. The moving iron 6 is installed in the valve body cavity and can move between the valve seat 5 and the static iron 7. There is a gap between the moving iron 6 and the inner wall of the magnetic isolation tube 9. The valve seat 5 has a valve cavity 8, and the magnetic isolation tube 9 is inwardly recessed to form a step at the port of the valve cavity 8. One end of the moving iron 6 is inserted into the valve cavity 8, and the end of the moving iron 6 is integrally provided with a radial boss. The spring 11 is located between the moving iron 6 and the valve seat 5, and one end of the spring 11 abuts against the radial boss, and the other end abuts against the step of the magnetic isolation tube 9 at the port of the valve cavity 8. The valve seat 5 is provided with an air inlet 13 axially communicating with the valve body cavity, and the circumferential surface of the valve seat 5 is provided with an air outlet hole 14 radially communicating with the valve body cavity. The end of the static iron 7 is adapted to be embedded in the valve shell 1, and the static iron 7 is provided with an axial exhaust passage 12. When the moving iron 6 moves, the air inlet 13 and the exhaust passage 12 can be opened and closed by the clutching of the valve seat 5 and the static iron 7. The exhaust passage 12 forms an exhaust port 15 at the end of the static iron 7, and the exhaust port 15 is connected to the outside of the valve shell 1 through an exhaust pipe 16. The magnetic isolation tube 9 is a stainless steel pipe. The two ends of the moving iron 6 are fixedly embedded with sealing pads 10 made of rubber. The outer circumferential surface of the end of the valve seat 5 where the air inlet 13 is located, the outer circumferential surface beside the extrusion riveting position of the magnetic isolation tube 9 and the valve seat 5, and the outer circumferential surface of the end of the static iron 7 are all provided with sealing rings 18.

[0031] The utility model installs on the valve group board 17 of vehicle air suspension, is equipped with valve body installation cavity and three screw installation holes which are distributed around valve body installation cavity on the installation surface of valve group board 17, is equipped with the screw through hole corresponding with screw installation hole on valve shell 1. When installing the split type vehicle exhaust solenoid valve, first, the valve body assembly is inserted into valve body installation cavity, when inserting, valve seat 5 is towards valve group board 17, after inserting, valve seat 5 is adapted to inlay with valve body installation cavity, then the via hole of the bottom end of the magnetic guide frame assembly 2 on the coil assembly is aligned with static iron 7, the coil assembly moves towards valve group board 17, until the valve body assembly is inserted into the central cavity of coil skeleton 3, and the bottom end surface of valve shell 1 is attached on the installation surface of valve group board 17, then three long screws are respectively threaded through the screw through hole and are screwed with the respective corresponding screw installation hole, by this, the valve body assembly, coil assembly are fixed on valve group board 17, form the complete split type vehicle exhaust solenoid valve. Because the valve body assembly, coil assembly are installed on valve group board 17 respectively, are relatively independent, once the valve body assembly, coil assembly appear the fault respectively, can be replaced respectively, and do not need the valve body assembly, coil assembly to replace together. The split type vehicle exhaust solenoid valve switches the working state according to the on-off electricity condition of coil assembly, when the coil assembly is powered off, does not produce electromagnetic force, moving iron 6 is not attracted by electromagnetic force, at this moment, moving iron 6 is driven away from static iron 7 by the elastic force of spring 11, leans towards valve seat 5, sealing washer 10 seals the inner end of air inlet 13, exhaust passage 12 is conducted, exhaust hole 14 is communicated with the outside of valve shell 1 through the gap between moving iron 6 and the inner wall of magnetically isolated pipe 9, exhaust passage 12 and exhaust pipe 16, the gas of air suspension after work enters exhaust hole 14, and is discharged from exhaust pipe 16, realizes exhaust function, when the coil assembly is powered on, produces electromagnetic force, moving iron 6 is attracted by electromagnetic force, at this moment, moving iron 6 is driven away from valve seat 5 by the elastic force of spring 11, leans towards static iron 7, sealing washer 10 seals exhaust passage 12, air inlet 13 is conducted, air inlet 13 is communicated with exhaust hole 14, and the new working gas is input from air inlet 13 and is output from exhaust hole 14 to the pneumatic component of air suspension, realizes the function of air supplement or pressure maintenance.

[0032] Example 2:

[0033] As Figures 1 to 11The utility model discloses a split type exhaust electromagnetic valve for vehicle, including coil assembly and valve body assembly, and valve body assembly inserts coil assembly, can be detached from coil assembly. Coil assembly includes valve shell 1, magnetic yoke assembly 2, coil skeleton 3 and enameled wire winding 4, and magnetic yoke assembly 2, coil skeleton 3 and enameled wire winding 4 are all located inside valve shell 1. Magnetic yoke assembly 2 is cuboid frame, including a inverted U-shaped magnetic yoke and a bottom cover plate, and the bottom end of magnetic yoke is equipped with bayonet, and the both ends of bottom cover plate are equipped with outer convex parts, and the outer convex parts are matched with bayonet and are in interference fit, so that the cuboid frame has closed top surface, bottom surface and two opposite sides, and the other two opposite sides are open structure. Coil skeleton 3 is located in magnetic yoke assembly 2, and coil skeleton 3 is the rotation body of the axis section in the shape of H, including cylindrical skeleton main body and end face disc fixed at the top and bottom of skeleton main body, and the end face disc of the top of coil skeleton 3 abuts the top of magnetic yoke assembly 2, i.e. the U-shaped bottom of magnetic yoke, and the end face disc of the bottom of coil skeleton 3 abuts the bottom of magnetic yoke assembly 2, i.e. the top of bottom cover plate. The center of skeleton main body is equipped with center cavity, and center cavity can contain valve body assembly, and the top and bottom of magnetic yoke assembly 2 are also equipped with through hole coaxial with center cavity, to ensure the plug-in cooperation of valve body assembly and coil assembly. Enameled wire winding 4 is wrapped on the outer circumferential surface of coil skeleton 3. When making coil assembly, the bottom cover plate is not installed on the magnetic yoke, and the bottom end of magnetic yoke is kept open, and coil skeleton 3 is formed into enameled wire winding 4 after winding, and then the bottom cover plate is placed at the bottom end of magnetic yoke, and then stamping connection forms a combination of magnetic yoke assembly 2, coil skeleton 3 and enameled wire winding 4, and then the combination is placed into mould, and glue injection is implemented, and valve shell 1 is formed, and magnetic yoke assembly 2, coil skeleton 3 and enameled wire winding 4 are combined with valve shell 1.

[0034] The valve body assembly comprises a valve seat 5, a moving iron 6, a static iron 7, a magnetic isolation tube 9 and a spring 11. Different from the embodiment 1, the magnetic isolation tube 9 is fixed at one end to the outer circumferential surface of the valve seat 5 by laser welding and at the other end to the outer circumferential surface of the static iron 7 by laser welding, so as to form a closed valve body cavity. The moving iron 6 is installed in the valve body cavity and can move between the valve seat 5 and the static iron 7. There is a gap between the moving iron 6 and the inner wall of the magnetic isolation tube 9. The valve seat 5 has a valve cavity 8, and the magnetic isolation tube 9 is inwardly recessed at the port of the valve cavity 8 to form a step. One end of the moving iron 6 is inserted into the valve cavity 8, and the end of the moving iron 6 is integrally provided with a radial boss. The spring 11 is located between the moving iron 6 and the valve seat 5, with one end abutting against the radial boss and the other end abutting against the step of the magnetic isolation tube 9 at the port of the valve cavity 8. The valve seat 5 is provided with an air inlet 13 in the center axially communicating with the valve body cavity, and the circumferential surface of the valve seat 5 is provided with an air outlet hole 14 radially communicating with the valve body cavity. The static iron 7 is fitted and inserted into the valve shell 1 at the end, and the static iron 7 is provided with an axial exhaust passage 12 in the center. The moving iron 6 can open and close the air inlet 13 and the exhaust passage 12 by engaging and disengaging with the valve seat 5 and the static iron 7. The exhaust passage 12 forms an exhaust port 15 at the end of the static iron 7, and the exhaust port 15 is connected to the outside of the valve shell 1 through an exhaust pipe 16. The magnetic isolation tube 9 is a stainless steel pipe. The two ends of the moving iron 6 are fixedly embedded with sealing pads 10 made of rubber. The outer circumferential surface of the end of the valve seat 5 where the air inlet 13 is located, the outer circumferential surface beside the welding position of the magnetic isolation tube 9 and the valve seat 5, and the outer circumferential surface of the end of the static iron 7 are all provided with sealing rings 18.

[0035] The utility model discloses install on the valve group board 17 of vehicle air suspension, be equipped with valve body installation cavity and distribute three screw mounting holes around valve body installation cavity on the mounting surface of valve group board 17, be equipped with the screw through -hole corresponding with screw mounting hole on valve housing 1. When installing this split type vehicle exhaust solenoid valve, first, the valve body assembly is inserted into valve body installation cavity, when inserting, valve seat 5 is towards valve group board 17, after inserting, valve seat 5 and valve body installation cavity adaptation inlay, then the via hole of the magnetic guide frame assembly 2 bottom end on the coil assembly is aligned static iron 7, the coil assembly moves towards valve group board 17, until the valve body assembly is inserted into the central cavity of coil skeleton 3, and the bottom end face of valve housing 1 is pasted on the mounting surface of valve group board 17, then use three long screws respectively through the screw through -hole and with respective corresponding screw mounting hole thread connection, by this, the valve body assembly, coil assembly are fixed in valve group board 17, form complete split type vehicle exhaust solenoid valve. Because the valve body assembly, coil assembly are installed on valve group board 17 respectively, relatively independent, once the valve body assembly, coil assembly respectively appear the fault, can replace respectively, and need not the valve body assembly, coil assembly together replacement. This split type vehicle exhaust solenoid valve switches the working condition according to the on-off electricity condition of coil assembly, when the coil assembly is powered off, does not produce electromagnetic force, moving iron 6 is not attracted by electromagnetic force, at this moment, moving iron 6 is driven away from static iron 7 by the elastic force of spring 11, leans to valve seat 5, and sealing washer 10 seals the inner end of air inlet 13, and exhaust passage 12 is conducted, and exhaust hole 14 is communicated with the outer portion of valve housing 1 through the gap between moving iron 6 and magnetically isolated pipe 9 inner wall, exhaust passage 12 and exhaust pipe 16, and the gas of air suspension after work enters exhaust hole 14, and is discharged from exhaust pipe 16, realizes exhaust function, when the coil assembly is powered on, produces electromagnetic force, and moving iron 6 is attracted by electromagnetic force, at this moment, moving iron 6 is driven away from valve seat 5 by the elastic force of spring 11, leans to static iron 7, and sealing washer 10 seals exhaust passage 12, and air inlet 13 is conducted, and air inlet 13 is communicated with exhaust hole 14, and the new working gas is input from air inlet 13 and is output from exhaust hole 14 to the pneumatic component of air suspension, realizes the function of air supplement or pressure maintenance.

Claims

1. A split type electromagnetic valve for vehicle exhaust, comprising a coil assembly and a valve body assembly, characterized in that, The valve body assembly is inserted into the coil assembly and detachably connected with the coil assembly, the coil assembly comprises a valve shell and a magnetic conducting frame assembly fixed inside the valve shell and provided with a coil framework, the coil framework is provided with an enameled wire winding and a central cavity through which the valve body assembly penetrates, the magnetic conducting frame assembly comprises an inverted U-shaped magnetic conducting frame and a bottom cover plate provided with an outer protrusion at both ends, the bottom end of the magnetic conducting frame is provided with a bayonet fitting in interference fit with the outer protrusion, the valve body assembly comprises a valve seat and a static iron fixed with the valve seat and provided with an exhaust passage, and the valve seat is movably installed with a dynamic iron capable of opening and closing the exhaust passage.

2. The split type exhaust electromagnetic valve for vehicle according to claim 1, characterized by The magnetic conducting frame assembly is a cuboid frame.

3. The split-body exhaust electromagnetic valve for vehicle according to claim 1, characterized by The valve shell is a plastic part.

4. The split-body exhaust solenoid valve for vehicle according to claim 1, wherein The magnetic conducting frame assembly and the valve shell are connected through a glue injection molding structure.

5. The split-body exhaust solenoid valve for vehicle according to claim 1, wherein The valve seat is provided with a valve cavity, one end of the dynamic iron is inserted into the valve cavity, a magnetic isolation tube is fixed on the outer wall of the valve cavity, one end of the magnetic isolation tube is fixed with the valve seat, and the static iron is fixed with the other end of the magnetic isolation tube.

6. The split-body exhaust solenoid valve for vehicle according to claim 1, wherein Both ends of the dynamic iron are provided with sealing pads made of rubber.

7. The split-body exhaust solenoid valve for vehicle according to claim 1, wherein The magnetic isolation tube is a stainless steel tube.

Images