CN111927969A - Carbon tank solenoid valve - Google Patents

Carbon tank solenoid valve Download PDF

Info

Publication number
CN111927969A
CN111927969A CN202010976535.8A CN202010976535A CN111927969A CN 111927969 A CN111927969 A CN 111927969A CN 202010976535 A CN202010976535 A CN 202010976535A CN 111927969 A CN111927969 A CN 111927969A
Authority
CN
China
Prior art keywords
valve core
movable valve
static
solenoid valve
movable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010976535.8A
Other languages
Chinese (zh)
Inventor
汪念军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Chang'an Chiyeung Automotive Electrics Co ltd
Original Assignee
Chongqing Chang'an Chiyeung Automotive Electrics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Chang'an Chiyeung Automotive Electrics Co ltd filed Critical Chongqing Chang'an Chiyeung Automotive Electrics Co ltd
Priority to CN202010976535.8A priority Critical patent/CN111927969A/en
Publication of CN111927969A publication Critical patent/CN111927969A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0603—Multiple-way valves
    • F16K31/0624—Lift valves
    • F16K31/0627—Lift valves with movable valve member positioned between seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0686—Braking, pressure equilibration, shock absorbing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0686—Braking, pressure equilibration, shock absorbing
    • F16K31/0696—Shock absorbing, e.g. using a dash-pot

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention relates to a carbon tank electromagnetic valve, which comprises a front shell and a rear shell; the front shell is provided with an air outlet pipe; the rear shell is provided with an air inlet pipe, and the inside of the rear shell is provided with a mounting bracket; a magnetic conduction assembly is fixedly arranged in the mounting bracket; a valve body assembly is arranged between the magnetic conduction assemblies; the valve body assembly comprises a static valve core and a dynamic valve core; the end surface of the movable valve core is provided with a sealing end; a guide column is arranged between the movable valve core and the static valve core; an elastic part is sleeved on the outer side of the guide post; the static valve core and the dynamic valve core are positioned on the outer side of the guide column; the end part of the elastic part is connected with the inner wall of the movable valve core. In the invention, the sealing end of the movable valve core is made of fluororubber, so that the characteristics of strong temperature resistance, strong corrosion resistance and strong rebound resilience can play a role under the extreme condition of gasoline steam, the sealing end is kept to have a smaller expansion rate all the time, higher desorption capacity is kept, the movable valve core is not easy to corrode, and the sealing capacity cannot be declined.

Description

Carbon tank solenoid valve
Technical Field
The invention relates to an electromagnetic valve, in particular to a carbon tank electromagnetic valve, which belongs to the technical field of automobile parts, in particular to a flow limiting valve.
Background
The oil evaporative emission control system is introduced to avoid fuel vapors escaping into the atmosphere and is part of the engine control system, where the canister and canister solenoid valve are two important components of the system. Wherein the canister is adapted to absorb oil vapour from the oil tank until the oil vapour is saturated. The canister solenoid valve is located at the rear end of the canister, is connected with the atmosphere port, is a normally open solenoid valve, and is opened/closed according to an electric signal sent by an Electronic Control Unit (ECU). According to the rules of OBDII program (for example, after the vehicle stops running), ECU can send the electric signal to the carbon canister solenoid valve, and the carbon canister solenoid valve changes into the closed state, and at this moment whole evaporation emission control system forms a closed circuit, and the system detects the change of system pressure value through the pressure sensor on the oil tank, so as to diagnose, detect whether the gas circuit has the leakage phenomenon, namely detect whether the risk that the gas-oil mixture gas is discharged to the atmosphere without being filtered by the carbon canister. The gasoline evaporative emission control system not only reduces emission, but also reduces oil consumption, and meanwhile, the carbon tank electromagnetic valve is suitable for various vehicles. In the prior art, a rubber material is usually adopted as the end head of the movable valve core, but because the electromagnetic valve is in a high-temperature and high-corrosivity environment for a long time, the end head of the movable valve core is easy to expand and deform, so that the ventilation gap is reduced, the flow of the electromagnetic valve is influenced, and the desorption capacity is poor. Meanwhile, in a relatively extreme environment, the traditional material is adopted as the lining, so that the corrosion is easily caused, the sliding between the movable valve core and the lining is blocked, and the normal use of the electromagnetic valve is influenced. Therefore, further improvements are desired.
Disclosure of Invention
In view of this, the present invention aims to overcome the defects in the prior art, and provides a canister electromagnetic valve which has the advantages of prolonged service life, improved working efficiency, reduced use cost, and simple and reasonable structure.
In order to achieve the above object, the present invention provides a canister solenoid valve, comprising a front housing and a rear housing; the front shell is provided with an air outlet pipe; the rear shell is provided with an air inlet pipe, and the inside of the rear shell is provided with an installation bracket; a magnetic conduction assembly is fixedly arranged in the mounting bracket; a valve body assembly is arranged between the magnetic conduction assemblies; the valve body assembly comprises a static valve core and a dynamic valve core; the end surface of the movable valve core is provided with a sealing end; a guide column is arranged between the movable valve core and the static valve core; an elastic part is sleeved on the outer side of the guide post; the static valve core and the dynamic valve core are positioned on the outer side of the guide column; the end part of the elastic part is connected with the inner wall of the movable valve core.
Preferably, the sealing end is made of fluororubber; the movable valve core is made of a high-magnetic-permeability stainless iron material; the magnetic conduction assembly comprises an electromagnetic coil and a winding framework; the static valve core is connected with the electromagnetic coil through a winding framework.
The rubber end adopts fluororubber, and has strong temperature resistance, corrosion resistance and rebound resilience.
Preferably, the inner side of the static valve core is provided with a clamping groove relative to the guide post; the surface of the guide post is provided with a plurality of clamping teeth in a surrounding way; and a bushing is arranged between the winding framework and the static valve core and between the winding framework and the dynamic valve core.
Preferably, the rear shell is provided with a through wire groove; the electromagnetic coil and the winding framework are connected with the through wire slot; the electromagnetic coil and the winding framework are formed by riveting and assembling.
The magnetic conduction component adopts stamping and lathe processing as the sub-parts, each sub-part is formed by riveting and assembling, and the dimension can be ensured to meet the requirement
Preferably, an O-shaped sealing ring is arranged in the through wire groove; the bottom of the rear shell is provided with an insulating shell; a rubber sleeve is arranged in the insulating shell.
Preferably, the outer side of the guide post is provided with a convex stop block in a surrounding way; one side of the movable valve core close to the air outlet pipe is provided with an inserting through hole; the rubber end is connected in the insertion through hole.
Preferably, a ball retainer is arranged on the outer side of the movable valve core; the bush is provided with a groove relative to the ball retainer; and a baffle plate is also arranged on the outer side of the movable valve core.
Preferably, a ball is arranged between the ball retainer and the blocking piece; the ball is rotationally connected with the groove and the surface of the movable valve core.
In the invention, the sealing end of the movable valve core is made of fluororubber, so that the characteristics of strong temperature resistance, strong corrosion resistance and strong rebound resilience can play a role under the extreme condition of gasoline steam, the sealing end is kept to have a smaller expansion rate all the time, higher desorption capacity is kept, the movable valve core is not easy to corrode, and the sealing capacity cannot be declined. Meanwhile, the movable valve core is made of a high-magnetic-permeability stainless iron material, the surface of the movable valve core is coated with a high-lubrication low-friction-coefficient material, the movable valve core has good magnetic induction capability, and meanwhile, a good low-friction coefficient can be kept between the movable valve core and the lining, so that the sliding resistance is small, and the lining penetrates through the coil framework, so that the coaxiality of the static valve core and the movable valve core is easily ensured. And finally, the magnetic conduction assembly and the sub-parts are processed by a punching machine and a lathe, and each sub-part is assembled and formed by riveting, so that the size can be ensured to meet the requirement.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic cross-sectional structure of the present invention.
Fig. 3 is a schematic structural view of the ball cage.
In the figure, 1 is a front shell, 2 is a rear shell, 3 is an air outlet pipe, 4 is an air inlet pipe, 5 is a static valve element, 6 is a movable valve element, 7 is a sealing end, 8 is a guide column, 8.1 is a convex stop block, 9 is an elastic part, 10 is an electromagnetic coil, 11 is a winding framework, 12 is a bushing, 13 is a through wire groove, 14 is an insulating shell, 15 is a rubber sleeve, 16 is a ball retainer, and 17 is a separation blade.
Detailed Description
The technical solutions in the novel embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the novel embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the novel embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the novel concept, are within the scope of the novel protection of the present invention.
Terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms defined in commonly used dictionaries have meanings that are consistent with their meanings in the prior art.
Referring to fig. 1 to 3, a canister solenoid valve includes a front case 1 and a rear case 2; the front shell 1 is provided with an air outlet pipe 3; the rear shell 2 is provided with an air inlet pipe 4, and the rear shell 2 is internally provided with a mounting bracket; a magnetic conduction assembly is fixedly arranged in the mounting bracket; a valve body assembly is arranged between the magnetic conduction assemblies; the valve body assembly comprises a static valve core 5 and a dynamic valve core 6; the end surface of the movable valve core 6 is provided with a sealing end 7; a guide column 8 is arranged between the movable valve core 6 and the static valve core 5; the outer side of the guide post 8 is sleeved with an elastic part 9; the static valve core 5 and the movable valve core 6 are positioned outside the guide post 8; the end of the elastic element 9 is connected with the inner wall of the movable valve core 6.
The working principle is as follows: this scheme is applicable to car petrol evaporation control system, belongs to the normally closed valve. The electromagnetic coil generates a magnetic field, and the carbon tank control valve is opened/closed by matching with the movable valve core and the elastic piece. When the valve is electrified, the magnetic conduction assembly (the electromagnetic coil) generates a magnetic field, the movable valve core is sucked to the bottom, and the valve is opened; when the power is off, the magnetic field of the coil disappears, the spring pushes the movable valve core upwards, the movable valve core is tightly attached to the air outlet of the front shell, and the valve is closed.
Further, the sealing end 7 is made of fluororubber; the movable valve core 6 is made of a high-magnetic-permeability stainless iron material; the magnetic conduction assembly comprises an electromagnetic coil 10 and a winding framework 11; the static valve core 5 is connected with the electromagnetic coil through a winding framework.
In this embodiment, the sealed end is preferred to adopt fluororubber, utilizes this material temperature toleration strong, corrosion resistance is strong, the strong speciality of resilience, ensures the stability of sealed end size, guarantees the desorption ability of solenoid valve.
Furthermore, a clamping groove is formed in the inner side of the static valve element 5 relative to the guide post 8; the surface of the guide post 8 is provided with a plurality of latch teeth 8.1 in a surrounding way; and a lining 12 is arranged between the winding frame 11 and the static valve core and between the winding frame and the movable valve core.
In this embodiment, the bushing 12 penetrates through the bobbin, so that the coaxiality of the static valve core and the dynamic valve core is easily ensured. The guide post has the function of relieving rigid collision between the movable valve core and the static valve core.
Further, the rear housing 2 is provided with a through-line groove 13; the electromagnetic coil 10 and the bobbin 11 are connected with a through wire groove 13; the electromagnetic coil and the winding framework are formed by riveting and assembling.
In this embodiment, the magnetic conduction subassembly, the sub-part adopts punching press and lathe work, and each sub-part adopts riveting assembly forming, can guarantee that the size meets the demands.
Furthermore, an O-shaped sealing ring is arranged in the through wire groove 13; the bottom of the rear shell 2 is provided with an insulating shell 14; a rubber sleeve 15 is arranged in the insulating housing.
Furthermore, a convex stop block 8.1 is arranged on the outer side of the guide post 8 in a surrounding manner; one side of the movable valve core 6 close to the air outlet pipe is provided with an inserting through hole; the sealing end is connected in the insertion through hole.
In this embodiment, the raised stops on the guide posts ensure that the guide posts do not retract inwardly into the stationary spool when the movable spool is moved inwardly by magnetic attraction.
Furthermore, a ball retainer 16 is arranged outside the movable valve core 6; the bush 12 is provided with a groove relative to the ball retainer 16; and a baffle plate is also arranged on the outer side of the movable valve core.
This embodiment is preferred scheme, because the solenoid valve is in the environment of gasoline steam for a long time, remains the water smoke easily between movable valve core surface and the bush, in this kind of environment, very easily appears the condition of corrosion, if appear the corrosion, then can influence the slip of movable valve core, consequently, adopts the ball to avoid the emergence of this kind of condition.
Furthermore, balls are arranged between the ball retainer and the blocking piece; the ball is rotationally connected with the groove and the surface of the movable valve core.
Finally, the above embodiments are only intended to illustrate the novel technical solutions of the present invention and not to limit the same, and although the novel technical solutions of the present invention have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the novel technical solutions of the present invention without departing from the spirit and scope of the novel technical solutions of the present invention, and all of the modifications and equivalent substitutions are intended to be included within the scope of the claims of the present invention.

Claims (8)

1. A canister solenoid valve includes a front housing and a rear housing; the front shell is provided with an air outlet pipe; the rear shell body is provided with an air inlet pipe, and is characterized in that: the rear shell is internally provided with a mounting bracket; a magnetic conduction assembly is fixedly arranged in the mounting bracket; a valve body assembly is arranged between the magnetic conduction assemblies; the valve body assembly comprises a static valve core and a dynamic valve core; the end surface of the movable valve core is provided with a sealing end; a guide column is arranged between the movable valve core and the static valve core; an elastic part is sleeved on the outer side of the guide post; the static valve core and the dynamic valve core are positioned on the outer side of the guide column; the end part of the elastic part is connected with the inner wall of the movable valve core.
2. A canister solenoid valve as claimed in claim 1 wherein: the sealing end is made of fluororubber; the movable valve core is made of a high-magnetic-permeability stainless iron material; the magnetic conduction assembly comprises an electromagnetic coil and a winding framework; the static valve core is connected with the electromagnetic coil through a winding framework.
3. A canister solenoid valve as claimed in claim 2 wherein: a clamping groove is formed in the inner side of the static valve core relative to the guide post; the surface of the guide post is provided with a plurality of clamping teeth in a surrounding way; and a bushing is arranged between the winding framework and the static valve core and between the winding framework and the dynamic valve core.
4. A canister solenoid valve according to claim 3, characterised in that: the rear shell is provided with a through wire groove; the electromagnetic coil and the winding framework are connected with the through wire slot; the electromagnetic coil and the winding framework are formed by riveting and assembling.
5. A canister solenoid valve according to claim 4, characterised in that: an O-shaped sealing ring is arranged in the through wire groove; the bottom of the rear shell is provided with an insulating shell; a rubber sleeve is arranged in the insulating shell.
6. A canister solenoid valve as claimed in claim 1 wherein: the outer side of the guide post is provided with a convex stop block in a surrounding way; one side of the movable valve core close to the air outlet pipe is provided with an inserting through hole; the rubber end is connected in the insertion through hole.
7. A canister solenoid valve as claimed in claim 1 wherein: a ball retainer is arranged on the outer side of the movable valve core; the bush is provided with a groove relative to the ball retainer; and a baffle plate is also arranged on the outer side of the movable valve core.
8. A canister solenoid valve according to claim 7, characterised in that: balls are arranged between the ball retainer and the blocking piece; the ball is rotationally connected with the groove and the surface of the movable valve core.
CN202010976535.8A 2020-09-16 2020-09-16 Carbon tank solenoid valve Pending CN111927969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010976535.8A CN111927969A (en) 2020-09-16 2020-09-16 Carbon tank solenoid valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010976535.8A CN111927969A (en) 2020-09-16 2020-09-16 Carbon tank solenoid valve

Publications (1)

Publication Number Publication Date
CN111927969A true CN111927969A (en) 2020-11-13

Family

ID=73333872

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010976535.8A Pending CN111927969A (en) 2020-09-16 2020-09-16 Carbon tank solenoid valve

Country Status (1)

Country Link
CN (1) CN111927969A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117249330A (en) * 2023-11-15 2023-12-19 合肥东昇机械科技有限公司 Electromagnetic valve sealing type external oil supply shielding oil pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117249330A (en) * 2023-11-15 2023-12-19 合肥东昇机械科技有限公司 Electromagnetic valve sealing type external oil supply shielding oil pipe
CN117249330B (en) * 2023-11-15 2024-02-09 合肥东昇智能装备股份有限公司 Electromagnetic valve sealing type external oil supply shielding oil pipe

Similar Documents

Publication Publication Date Title
US4901974A (en) Canister purge solenoid valve
US6343505B1 (en) Automotive evaporative leak detection system
US20010017160A1 (en) Electromagnetic valve for ORVR system
US5209210A (en) Evaporative emission control system
CN111927969A (en) Carbon tank solenoid valve
CN106089500B (en) A kind of through type binary channels fuel gas injection valve
US6595485B2 (en) Solenoid valve with cushion between plunger and plunger stop
US20080000456A1 (en) Cost-optimized canister purge valve
CN107084267A (en) A kind of highly integrated fuel tank isolation valve
CN212616392U (en) Carbon tank solenoid valve
US5878779A (en) Actuator housing
CN103700465B (en) A kind of electromagnet
CN212959833U (en) Fuel isolation valve of hybrid oil tank
KR20160103974A (en) Actuator for valves in internal combustion engines
CN112424890A (en) Electromagnetic device comprising a vapour outlet conduit arranged in an intermediate casing
CN212960110U (en) Fuel isolation valve of hybrid oil tank
KR102394842B1 (en) Air Damping Type Canister Close Valve and Vehicle Fuel System
CN219711693U (en) Oil tank isolation valve
CN216077340U (en) Multi-pipeline idling electromagnetic valve
CN107489808B (en) Noise reduction type purification control electromagnetic valve
CN220850957U (en) Electromagnetic valve of automatic gearbox
CN215258101U (en) Electromagnetic valve with high-pitch high-sealing on-off structure
CN219198291U (en) Diaphragm type automobile carbon tank oil gas control electromagnetic valve
CN217421400U (en) High-pressure fuel injection nozzle
CN220956569U (en) Novel external electromagnetic valve of shock absorber

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: 401120 No.5, Feihong Road, shuangfengqiao street, Yubei District, Chongqing

Applicant after: Chongqing Zhiyang Electric Co.,Ltd.

Address before: 401120 No.5, Feihong Road, shuangfengqiao street, Yubei District, Chongqing

Applicant before: CHONGQING CHANG'AN CHIYEUNG AUTOMOTIVE ELECTRICS Co.,Ltd.