CN219570698U - Electromagnetic valve for mechanical backup of automobile brake system - Google Patents
Electromagnetic valve for mechanical backup of automobile brake system Download PDFInfo
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- CN219570698U CN219570698U CN202320631562.0U CN202320631562U CN219570698U CN 219570698 U CN219570698 U CN 219570698U CN 202320631562 U CN202320631562 U CN 202320631562U CN 219570698 U CN219570698 U CN 219570698U
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- valve body
- filter screen
- coil
- solenoid valve
- electromagnetic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve for mechanical backup of an automobile brake system, which comprises a main valve body, an electromagnetic valve assembly and a coil assembly, wherein the electromagnetic valve body is arranged in a cavity of the main valve body, a valve seat is fixedly arranged in the cavity of the electromagnetic valve body, a conical oil passing port is arranged in the center of the top of the valve seat, a valve core is arranged above the valve seat, the lower part of the valve core is of a conical structure, the bottom of the valve core is matched with the conical oil passing port of the valve seat, a reset spring is fixedly arranged on the valve seat, the lower filter screen comprises a sleeve-shaped lower filter screen support and a lower filter screen, the lower filter screen support is a plastic product and is arranged above an oil outlet channel of the main valve body, the outer wall of the lower filter screen support is in interference fit with the inner wall of the main valve body, and the inner wall of the lower filter screen support is in interference fit with the outer wall of the electromagnetic valve body. The device provided by the utility model has good assembly manufacturability, increases the fluid path and reduces the pressure loss.
Description
Technical Field
The utility model relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve for mechanical backup of an automobile brake system.
Background
The electromagnetic valve for mechanical backup of the automobile brake system is a valve which is applied to an automobile onebox system and used for maintaining mechanical backup and realizing pressure decoupling of a main cylinder cavity and a wheel cylinder cavity. When the system works normally, the electromagnetic coil is electrified, the electromagnetic valve is closed, and oil in the main cylinder cavity cannot enter the wheel cylinder cavity through the electromagnetic valve. When the system is powered off, the electromagnetic valve is opened, and oil in the main cylinder cavity can enter the wheel cylinder cavity through the electromagnetic valve during mechanical backup to perform mechanical backup braking. The existing electromagnetic valve for mechanical backup of the automobile brake system is generally provided with a lower filter screen at the bottom oil outlet, but the lower filter screen is generally arranged in the inner cavity of the electromagnetic valve body, and the metal surface between the metal surface at the outer side of the lower end of the electromagnetic valve body and the inner wall between the main valve body is sealed by extrusion fit. Because the electromagnetic valve body and the main valve body are made of metal materials, the extrusion sealing mode between the metal and the metal has small interference, is laborious to assemble and has poor assembly manufacturability, and because the lower filter screen is arranged in the inner cavity of the electromagnetic valve body, the diameter of fluid is reduced, and the pressure loss is increased.
Disclosure of Invention
The utility model aims to solve the technical problems of providing the electromagnetic valve for mechanical backup of the automobile brake system, which has good assembly manufacturability, increases the fluid path and reduces the pressure loss.
The utility model is realized by the following technical scheme:
the utility model provides a solenoid valve for car braking system machinery is backed up, it includes total valve body, solenoid valve assembly and coil assembly, total valve body middle part is equipped with total valve body cavity, and total valve body lateral part is equipped with into oil channel, and total valve body bottom is equipped with out the oil channel, solenoid valve assembly includes solenoid valve body, case, disk seat and lower filter screen, solenoid valve body installs in total valve body cavity and solenoid valve body middle part is equipped with the solenoid valve body cavity, and the solenoid valve body lateral wall is equipped with a plurality of oilholes, disk seat fixed mounting is in solenoid valve body cavity, and disk seat top center is equipped with the toper and crosses the hydraulic fluid port and go out the oil channel intercommunication with total valve body, the disk seat is located the disk seat top, and the disk seat middle part is equipped with spacing step, and the case lower part is the toper that the hydraulic fluid port was crossed with the disk seat for toper structure, fixed mounting has reset spring on the disk seat, reset spring suit is outside the case and the top is spacing through spacing step, the lower filter screen includes sleeve-shaped lower filter screen support and fixed mounting in the lower filter screen of filter screen support bottom, and lower filter screen support is the plastic product installs in total valve body top that goes out the oil channel, and lower filter screen support's outer wall and the interference fit with the inner wall of the total valve body, lower filter screen assembly, the inner wall of the filter screen is used for realizing the motion of the solenoid valve assembly.
Further, the electromagnetic valve assembly is also provided with an annular filter screen, the annular filter screen is arranged between the electromagnetic valve body and the main valve body and corresponds to the oil inlet channel of the main valve body and the oil passing hole of the electromagnetic valve body, and the annular filter screen is connected with the electromagnetic valve body in an interference fit manner.
Further, the coil assembly includes solenoid, armature, coil housing, coil skeleton and lower yoke, solenoid installs on the coil skeleton, and the coil skeleton is installed in the coil housing, and lower yoke fixed mounting is in coil skeleton bottom, the fixed briquetting that is equipped with in coil housing bottom, briquetting suit is external and with coil housing fixed connection in the solenoid valve, the armature is installed in the coil housing and is located the case top.
Preferably, the middle part of the armature is provided with a downward lug, the middle part of the valve core is provided with a groove matched with the lug, and the lug is inserted into the groove.
Optimally, the top of the coil housing is provided with a yielding hole, the top of the coil framework penetrates out of the yielding hole, and the part of the coil framework penetrating out of the yielding hole is sleeved with a vibration-damping rubber pad.
Further, a magnetism isolating sleeve is arranged outside the armature, and the magnetism isolating sleeve is fixedly connected with the outer wall of the electromagnetic valve body in a sealing way.
Preferably, a plurality of steady flow grooves are arranged on the outer wall of the valve core and the outer wall of the armature.
The utility model has the beneficial effects that:
1. the assembly manufacturability is good;
2. the fluid path is increased;
3. pressure loss is reduced;
4. when the electromagnetic valve is opened, oil is prevented from overflowing from the upper part due to the fact that the pressure ratio is large.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model.
FIG. 2 is a schematic view of the structure of the lower filter screen of the present utility model.
The valve comprises a valve body 1, a valve seat 2, an oil inlet passage 3, a pressing block 5, a lower yoke, a solenoid 6, a coil housing 7, a coil framework 8, a vibration reduction rubber pad 9, a lead wire 10, an armature 11, a magnetic isolation sleeve 12, a lug 13, a valve core 14, a valve body 15, a solenoid valve body 16, a return spring 17, an annular filter screen 18, a lower filter screen 19, an oil outlet passage 20, an inward flanging 21, a flow stabilizing groove 22, a lower filter screen bracket 23 and a lower filter screen.
Detailed Description
The utility model provides a solenoid valve for car braking system machinery is backed up, it includes total valve body 1, solenoid valve assembly and coil assembly, total valve body middle part is equipped with total valve body cavity, and total valve body lateral part is equipped with into oil channel 3, and total valve body bottom is equipped with out oil channel 19, solenoid valve assembly includes solenoid valve body 15, case 14, disk seat 2 and lower filter screen 18, solenoid valve body installs in total valve body cavity and solenoid valve body middle part is equipped with the solenoid valve body cavity, and specific can be equipped with the external diameter step at the solenoid valve body outer wall, and total valve body is equipped with the internal diameter step, and the external diameter step of solenoid valve body is placed on the internal diameter step of total valve body, realizes the support and the seal between total valve body and the solenoid valve body.
The side wall of the electromagnetic valve body is provided with a plurality of oil passing holes, the valve seat is fixedly arranged in the cavity of the electromagnetic valve body, the center of the top of the valve seat is provided with a conical oil passing hole which is communicated with an oil outlet channel of the main valve body, oil in the main cylinder cavity enters from the oil inlet channel of the main valve body and enters the electromagnetic valve body through the plurality of oil passing holes on the side wall of the electromagnetic valve body, and when the valve core is in an open state, the oil can flow out from the oil outlet channel of the main valve body along the conical oil passing hole of the valve seat and enter the wheel cylinder cavity to realize mechanical backup braking of the automobile braking system.
The case is located the disk seat top, and the case middle part is equipped with spacing step, and the case lower part is the toper structure and the bottom passes the hydraulic fluid port cooperation with the toper of disk seat, and fixed mounting has reset spring 16 on the disk seat, reset spring suit is outside the case and the top is spacing through spacing step, and the case can be PEEK material high accuracy injection moulding spare, and its small motion inertia is little, is favorable to stationarity control and noise control, and the case upper end can remain the laminating with the armature all the time under reset spring effect.
The lower filter screen includes sleeve-shaped lower filter screen support 22 and fixed mounting in lower filter screen 23 of lower filter screen support bottom, and lower filter screen support is plastic products and installs in the top of total valve body oil outlet channel, and the outer wall of lower filter screen support and the internal wall interference fit of total valve, the inner wall of lower filter screen support and the outer wall interference fit of solenoid valve body, coil assembly drive case up-and-down motion is used for realizing opening and close of solenoid valve.
The working principle of the mechanical backup electromagnetic valve is as follows: when the automobile brake system works normally, the electromagnetic coil of the coil assembly is electrified, the armature descends to press the valve core downwards, the bottom of the valve core is in sealing fit with the conical oil passing port of the valve seat, the mechanical backup electromagnetic valve is closed, and oil in a main cylinder cavity (not shown) cannot be communicated with a wheel cylinder cavity (not shown) through an oil outlet channel of the main valve body. When the electromagnetic coil is powered off, the armature rises, the valve core loses the pressure of the armature and rises under the action of the restoring force of the spring, the bottom of the valve core is separated from the conical oil passing port of the valve seat, the mechanical backup electromagnetic valve is opened, and oil in the main cylinder cavity is communicated with the wheel cylinder cavity through the oil outlet channel of the main valve body to enter the wheel cylinder cavity for mechanical backup braking.
Because the lower filter screen comprises the sleeve-shaped lower filter screen bracket and the lower filter screen fixedly arranged at the bottom of the lower filter screen bracket, the lower filter screen bracket is a plastic product and is arranged above the oil outlet channel of the main valve body, the outer wall of the lower filter screen bracket is in interference fit with the inner wall of the main valve body, the inner wall of the lower filter screen bracket is in interference fit with the outer wall of the electromagnetic valve body, the sealing interference between the lower filter screen bracket and the metal of the main valve body is larger when the lower filter screen bracket is assembled, the sealing interference can reach 0.2mm, the required assembling force is smaller, and only 0.2-0.6Kgf is needed, the deformation loosening and the displacement of the valve seat and the electromagnetic valve body are not easy to be caused when the main valve body is riveted, and the assembling manufacturability is better. And because the lower filter screen bracket is arranged outside the electromagnetic valve body, the lower end of the electromagnetic valve body can obtain a larger drift diameter compared with a built-in lower filter screen, thereby avoiding pressure loss.
Further, the electromagnetic valve assembly is also provided with an annular filter screen 17, the annular filter screen is arranged between the electromagnetic valve body and the main valve body and corresponds to the oil inlet channel of the main valve body and the oil passing hole of the electromagnetic valve body, the annular filter screen is connected with the electromagnetic valve body in an interference fit manner, the annular filter screen is arranged, sundries can be prevented from entering the electromagnetic valve, and the annular filter screen is connected with the electromagnetic valve body in an interference fit manner, so that the assembly is convenient and labor-saving.
Further, the coil assembly includes solenoid 6, armature 11, coil housing 7, coil skeleton 8 and lower yoke 5, solenoid installs on the coil skeleton, and the coil skeleton is installed in the coil housing, and lower yoke fixed mounting is in the coil skeleton bottom, the fixed briquetting 4 that is equipped with in coil housing bottom, briquetting suit is external and with coil housing fixed connection in the solenoid valve, and whole coil assembly outside is equipped with dustcoat (not shown) with coil assembly pressure equipment in total valve body top. The armature is mounted in the coil housing and above the valve core. The coil housing can be made of soft magnetic materials by stretching and stamping to form high magnetic conduction parts, and is a main path of a closed loop of magnetic force lines outside the electromagnetic coil. The coil housing lateral part and bottom all are equipped with the opening, and the coil skeleton is injection moulding's insulating working of plastics, is solenoid's carrier, and solenoid installs back on the coil skeleton, and in coil housing can be installed from the opening of coil housing lateral part to coil skeleton, then fixed mounting lower yoke, coil housing were equipped with the internal flange 20 and form the yoke together with the upper surface, and assembly shaping together with lower yoke is convenient for assemble and prevent to produce the magnetic leakage. After the electromagnetic coil is powered, electromagnetic thrust is provided for closing the valve core to push the valve core and the valve seat to be sealed and closed, and a PCB (not shown) of the ECU is connected with the electromagnetic coil through a lead 10 to provide voltage or current control signals for the electromagnetic coil.
Preferably, the middle part of the armature is provided with a downward lug 13, the middle part of the valve core is provided with a groove matched with the lug, and the lug is inserted into the groove, so that the valve core can run stably and reliably.
Optimally, the top of the coil shell is provided with a yielding hole, the top of the coil framework penetrates out of the yielding hole, the part of the coil framework penetrating out of the yielding hole is sleeved with a vibration-damping rubber pad 9, the vibration-damping rubber pad can be formed by vulcanizing an EPDM material, and the vibration-damping rubber pad provides pre-pressing for installation of the electromagnetic coil on the electromagnetic valve body and dampens vibration in the attraction and release of the armature and the valve core, so that a compression joint conductive structure of a lead wire and a PCB of the ECU is protected, and the durable service life of the structure is ensured.
Further, a magnetism isolating sleeve 12 is arranged outside the armature, the magnetism isolating sleeve is fixedly connected with the outer wall of the electromagnetic valve body in a sealing way, the magnetism isolating sleeve can be a precise stamping part made of stainless magnetic conducting materials, an upper cavity of a hydraulic working cavity of the electromagnetic valve is formed after the magnetism isolating sleeve is connected with the electromagnetic valve body in a laser welding way, and the magnetism isolating sleeve is matched with the coil shell and the armature through small air gaps. When the electromagnetic valve is opened and oil enters the electromagnetic valve body, a gap is formed between the electromagnetic valve body and the armature, and the magnetic isolation sleeve is arranged, so that the oil can be prevented from overflowing from the gap.
Optimally, a plurality of steady flow grooves 21 are arranged on the outer wall of the valve core and the outer wall of the armature, so that the electromagnetic valve can run stably, and noise is reduced.
In summary, the electromagnetic valve for mechanical backup of the automobile brake system has good assembly manufacturability, increases the fluid path and reduces the pressure loss.
Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The utility model provides a solenoid valve for car braking system mechanical backup, its characterized in that, including total valve body, solenoid valve assembly and coil assembly, total valve body middle part is equipped with total valve body cavity, and total valve body lateral part is equipped with into oil channel, and total valve body bottom is equipped with out the oil channel, solenoid valve assembly includes solenoid valve body, case, disk seat and lower filter screen, solenoid valve body installs in total valve body cavity and solenoid valve body middle part is equipped with the solenoid valve body cavity, and the solenoid valve body lateral wall is equipped with a plurality of oilholes, disk seat fixed mounting is in solenoid valve body cavity, and disk seat top center is equipped with the toper and crosses the oil port and go out the oil channel intercommunication with total valve body, the case is located the disk seat top, and the case middle part is equipped with spacing step, and the case lower part is the toper of toper structure and bottom and disk seat crosses the oil port cooperation, fixedly mounted reset spring on the disk seat, reset spring suit is outside the case and the top is spacing through spacing step, the lower filter screen support is the plastic product and installs in total valve body out the top of oil channel, the outer wall of lower filter screen support and the interference fit of lower filter screen support with the inner wall of total valve body, lower filter screen assembly is used for realizing the motion under the solenoid valve body.
2. The electromagnetic valve for mechanical backup of an automobile brake system according to claim 1, wherein the electromagnetic valve assembly is further provided with an annular filter screen, the annular filter screen is arranged between the electromagnetic valve body and the main valve body and corresponds to an oil inlet channel of the main valve body and an oil passing hole of the electromagnetic valve body, and the annular filter screen is connected with the electromagnetic valve body in an interference fit manner.
3. The electromagnetic valve for mechanical backup of an automobile brake system according to claim 1, wherein the coil assembly comprises an electromagnetic coil, an armature, a coil housing, a coil bobbin and a lower yoke, the electromagnetic coil is mounted on the coil bobbin, the coil bobbin is mounted in the coil housing, the lower yoke is fixedly mounted at the bottom of the coil bobbin, a pressing block is fixedly arranged at the bottom of the coil housing, the pressing block is sleeved outside the electromagnetic valve and fixedly connected with the coil housing, and the armature is mounted in the coil housing and is positioned above the valve core.
4. A solenoid valve for a mechanical back-up of a vehicle brake system according to claim 3 wherein the armature has a downwardly projecting tab in the middle thereof and a recess in the middle thereof for mating with the tab, said tab being inserted into the recess.
5. A solenoid valve for a mechanical backup of an automotive brake system according to claim 3 wherein the top of the coil housing is provided with a relief hole, the top of the coil former is threaded through the relief hole, and the portion of the coil former threaded through the relief hole is sleeved with a vibration-damping rubber pad.
6. A solenoid valve for a mechanical back-up of an automotive brake system according to claim 3 wherein said armature is provided with a magnetically isolated sleeve disposed externally thereof in sealing fixed connection with an outer wall of the solenoid valve body.
7. The electromagnetic valve for mechanical backup of an automobile brake system according to claim 1, wherein a plurality of flow stabilizing grooves are formed in the outer wall of the valve core.
8. A solenoid valve for a mechanical backup of a vehicle brake system according to claim 3 wherein said armature outer wall defines a plurality of flow stabilizing slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320631562.0U CN219570698U (en) | 2023-03-28 | 2023-03-28 | Electromagnetic valve for mechanical backup of automobile brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320631562.0U CN219570698U (en) | 2023-03-28 | 2023-03-28 | Electromagnetic valve for mechanical backup of automobile brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219570698U true CN219570698U (en) | 2023-08-22 |
Family
ID=87659597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320631562.0U Active CN219570698U (en) | 2023-03-28 | 2023-03-28 | Electromagnetic valve for mechanical backup of automobile brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219570698U (en) |
-
2023
- 2023-03-28 CN CN202320631562.0U patent/CN219570698U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |