CN107956338B - Automobile door lock mechanism and automobile - Google Patents

Automobile door lock mechanism and automobile Download PDF

Info

Publication number
CN107956338B
CN107956338B CN201711113447.XA CN201711113447A CN107956338B CN 107956338 B CN107956338 B CN 107956338B CN 201711113447 A CN201711113447 A CN 201711113447A CN 107956338 B CN107956338 B CN 107956338B
Authority
CN
China
Prior art keywords
lock
door
automobile
connecting piece
clamping plate
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.)
Active
Application number
CN201711113447.XA
Other languages
Chinese (zh)
Other versions
CN107956338A (en
Inventor
李文武
高潘
吴德辉
李亚虎
刘海根
邴建
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.)
BAIC Group ORV Co ltd
Original Assignee
BAIC Group ORV 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 BAIC Group ORV Co ltd filed Critical BAIC Group ORV Co ltd
Priority to CN201711113447.XA priority Critical patent/CN107956338B/en
Publication of CN107956338A publication Critical patent/CN107956338A/en
Application granted granted Critical
Publication of CN107956338B publication Critical patent/CN107956338B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B79/00Mounting or connecting vehicle locks or parts thereof
    • E05B79/02Mounting of vehicle locks or parts thereof
    • E05B79/06Mounting of handles, e.g. to the wing or to the lock
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B79/00Mounting or connecting vehicle locks or parts thereof
    • E05B79/02Mounting of vehicle locks or parts thereof
    • E05B79/08Mounting of individual lock elements in the lock, e.g. levers
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B79/00Mounting or connecting vehicle locks or parts thereof
    • E05B79/10Connections between movable lock parts
    • E05B79/12Connections between movable lock parts using connecting rods
    • E05B79/14Connections between movable lock parts using connecting rods the rods being linked to each other
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B79/00Mounting or connecting vehicle locks or parts thereof
    • E05B79/10Connections between movable lock parts
    • E05B79/22Operative connections between handles, sill buttons or lock knobs and the lock unit

Landscapes

  • Lock And Its Accessories (AREA)

Abstract

The invention discloses an automobile door lock mechanism and an automobile, wherein the automobile door lock mechanism comprises: door handles, door lock assemblies and latches; wherein, the door handle passes through the center pin with the door and is connected, the set bar is fixed in on the automobile body, the lock assembly includes: the lock body base is fixedly arranged on the vehicle door; the lock body clamping plate is connected with the lock body base in a sliding manner; the lock body clamping plate comprises a first state and a second state, wherein the first state moves towards the lock bolt direction relative to the lock body base and is inserted into a hole groove in the lock bolt, and the second state moves away from the lock bolt direction relative to the lock body base and is separated from the lock bolt; one end of the driving arm is connected with the lock body clamping plate, and the other end of the driving arm is connected to the central shaft through a connecting piece; and one end of the power-assisted mechanism is connected with the connecting piece, and the other end of the power-assisted mechanism is fixedly connected with the vehicle door. The embodiment of the invention has the advantages of simple structure, convenient installation, high transmission efficiency and high reliability.

Description

Automobile door lock mechanism and automobile
Technical Field
The invention relates to the field of automobiles, in particular to an automobile door lock mechanism and an automobile.
Background
With the continuous development of economy, the requirements on vehicles are higher and higher. In particular, military armored vehicles are increasingly required to have various performances, and due to the special use environment, when the armored vehicles run on uneven roads, the vehicles vibrate obviously, the door lock system is seriously tested, and the stability and reliability of the door lock are important performances of the armored vehicle door lock system. The insecure door lock is likely to cause unstable connection between the door and the vehicle body, which is likely to cause accidents, so that a mechanical lock body with simple structure and reliable performance is urgently needed to be developed.
Disclosure of Invention
In order to solve the technical problems, the invention provides an automobile door lock mechanism and an automobile, and solves the problems that the stability of an automobile door lock is poor and not firm when the automobile vibrates.
According to an aspect of the present invention, there is provided an automobile door lock mechanism including: door handles, door lock assemblies and latches; wherein, the door handle passes through the center pin with the door and is connected, the set bar is fixed in on the automobile body, the lock assembly includes:
the lock body base is fixedly arranged on the vehicle door;
the lock body clamping plate is connected with the lock body base in a sliding manner; the lock body clamping plate comprises a first state and a second state, wherein the first state moves towards the lock bolt direction relative to the lock body base and is inserted into a hole groove in the lock bolt, and the second state moves away from the lock bolt relative to the lock body base and is separated from the lock bolt;
one end of the driving arm is connected with the lock body clamping plate, and the other end of the driving arm is connected to the central shaft through a connecting piece;
one end of the boosting mechanism is connected with the connecting piece, and the other end of the boosting mechanism is fixedly connected with the vehicle door;
the central shaft is driven to rotate by the door handle, and the connecting piece drives the driving arm to move; the driving arm drives the lock body clamping plate to move between the first state and the second state;
when the driving arm drives the lock body clamping plate to move between the first state and the second state, a rotating force for driving the connecting piece to move towards the lock body clamping plate is applied to the connecting piece through the power-assisted mechanism.
Optionally, the door handle includes: a door inner handle and a door outer handle;
the vehicle door inner handle and the vehicle door outer handle are both connected with the central shaft.
Optionally, a sliding groove is formed in the lock body base, wherein the lock body clamping plate is arranged in the sliding groove and is connected with the lock body base in a sliding fit manner.
Optionally, both ends of the driving arm are respectively connected with the lock body clamping plate and the connecting member through a rotating shaft.
Optionally, the power assisting mechanism comprises: the device comprises a pipe body and a rod body, wherein part of the rod body is inserted in the pipe body, and a power-assisted spring is arranged in the pipe body;
the rod body is connected with the pipe body in a sliding fit mode, the assisting spring abuts against the rod body, and the length of the part, extending out of the pipe body, of the rod body is changed.
Optionally, the power assisting mechanism further comprises a mounting bracket;
the mounting bracket is fixed on the vehicle door, and the rod body is connected with the mounting bracket through a rotating shaft; the pipe body is connected with the connecting piece through a rotating shaft.
Optionally, a perpendicular distance from a connection of the assisting mechanism and the connecting piece to a center line of the central shaft is a first distance;
the vertical distance from the connecting position of the driving arm and the connecting piece to the central line of the central shaft is a second distance;
the first distance is greater than the second distance.
According to another aspect of the invention, an automobile is provided, which comprises an automobile door and an automobile body, and further comprises the automobile door lock mechanism.
The embodiment of the invention has the beneficial effects that:
in the scheme, the automobile door lock mechanism converts the rotation of an automobile door handle into the linear motion of the lock body clamping plate through the driving arm, and has the advantages of simple structure and high transmission efficiency; and the power-assisted mechanism plays a damping role in the motion process of the lock body clamping plate, so that the vehicle door lock assembly can be stably operated, and the power-assisted mechanism is convenient to install and high in reliability.
Drawings
FIG. 1 is a block diagram of an automotive door latch mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic view of a latch of an automotive door latch mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic view of an automotive door latch mechanism according to an embodiment of the present invention in a closed position;
fig. 4 is a schematic view showing an unlock state of an automobile door lock mechanism according to an embodiment of the present invention.
Wherein in the figure: 1. a door lock assembly 2, a lock bolt;
11. the lock comprises a lock body base, 12, a lock body clamping plate, 13, a driving arm, 14, a power assisting mechanism, 15, a vehicle door inner handle, 16 and a vehicle door outer handle;
141. a power-assisted spring 142 and a mounting bracket.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1-2, an embodiment of the present invention provides an automobile door lock mechanism, including: a door handle, a door lock assembly 1 and a lock bolt 2; wherein, the door handle passes through the center pin with the door and is connected, lock plunger 2 is fixed on the automobile body, door lock assembly 1 includes:
the lock body base 11 is fixedly arranged on the vehicle door;
the lock body clamping plate 12 is connected with the lock body base 11 in a sliding mode; the lock catch plate 12 includes a first state of moving towards the lock bolt 2 relative to the lock base 11 and being inserted into a hole groove inside the lock bolt 2, and a second state of moving away from the lock bolt 2 relative to the lock base 11 and being separated from the lock bolt 2;
one end of the driving arm 13 is connected with the lock body clamping plate 12, and the other end of the driving arm is connected to the central shaft through a connecting piece;
one end of the power-assisted mechanism 14 is connected with the connecting piece, and the other end of the power-assisted mechanism is fixedly connected with the vehicle door;
wherein, the door handle drives the central shaft to rotate, and the connecting piece drives the driving arm 13 to move; the driving arm 13 drives the lock card 12 to move between the first state and the second state;
when the driving arm 13 drives the lock card 12 to move between the first state and the second state, a rotational force for driving the connecting member toward the moving direction of the lock card 12 is applied to the connecting member by the power assisting mechanism 14.
In this embodiment, the process of closing the automobile door lock is performed when the lock catch plate 12 is in the first state, and the process of opening the automobile door lock is performed when the lock catch plate 12 is in the second state. As shown in fig. 3, the automotive door lock is in a closed state, and the door lock assembly 1 and the throw 2 are connected by the lock body catch plate 12. When the automobile door lock is opened, the lock body catch plate 12 moves to the second state, the door handle rotates, the driving arm 13 is driven to rotate clockwise around the central shaft through the connecting piece on the central shaft, meanwhile, the power assisting mechanism 14 applies a force for driving the lock body catch plate 12 to slide in a direction away from the lock bolt 2 to the driving arm 13 through the connecting piece, the driving arm 13 drives the lock body catch plate 12 to slide in a direction away from the lock bolt 2 in parallel, and therefore the automobile door lock is switched from a closed state to an opened state, and as shown in fig. 4, the automobile door lock is in the opened state.
In the scheme, the power assisting mechanism 14 plays a role in damping, so that the vehicle door lock assembly can be stably operated; the automobile door lock mechanism converts the rotation of the door handle into the linear motion of the lock body clamping plate 12, and has simple structure and high transmission efficiency; simple to operate, the reliability is high, makes door and automobile body be connected more stably.
In the above-described embodiment of the present invention, the door handle includes: a door inner handle 15 and a door outer handle 16;
the door inner handle 15 and the door outer handle 16 are both connected to the center shaft.
In this embodiment, the door inner handle 15 and the door outer handle 16 are connected to the door through the central shaft, and when the door inner handle 15 or the door outer handle 16 rotates, the central shaft is driven to rotate, so that the lock catch plate 12 is driven to slide by the driving arm 13, thereby opening or closing the door lock.
In the above embodiment of the present invention, the lock body base 11 is provided with a sliding slot, wherein the lock body clamping plate 12 is disposed in the sliding slot and is connected with the lock body base 11 in a sliding fit manner.
In this embodiment, when the force of the door handle rotation is transmitted to the lock catch plate 12 through the driving arm 13, the lock catch plate 12 slides between the sliding slot and the hole slot inside the lock bolt 2 according to the force direction, so as to open or close the door lock.
Specifically, the sliding groove is provided with a bolt mounting hole, and the lock body base 11 and the vehicle door are fixed through the bolt mounting hole.
In the above embodiment of the present invention, two ends of the driving arm 13 are respectively connected to the lock catch plate 12 and the connecting member through rotating shafts.
In this embodiment, when the central shaft drives the connecting member to rotate, the driving arm 13 drives the lock card 12 to change the moving direction through the rotation of the rotating shaft.
In the above embodiment of the present invention, the assist mechanism 14 includes: the device comprises a pipe body and a rod body, wherein part of the rod body is inserted into the pipe body, and a power-assisted spring 141 is arranged inside the pipe body;
the rod body is connected with the tube body in a sliding fit mode, the booster spring 141 presses against the rod body, and the length of the part, extending out of the tube body, of the rod body changes.
Specifically, the power assisting mechanism 14 further includes a mounting bracket 142;
the mounting bracket 142 is fixed on the vehicle door, and the rod body is connected with the mounting bracket 142 through a rotating shaft; the pipe body is connected with the connecting piece through a rotating shaft.
In this embodiment, the boosting spring 141 is disposed inside the tube body and is connected to the mounting bracket 142 through the rod body; when the force of the door handle rotation transmitted through the connector is applied, the assist spring 141 is extended or compressed, so that the length of the rod body extending out of the pipe body portion is changed.
When the extension line of the power spring 141 passes through the axis of the central shaft, the power spring 141 is in the equilibrium position, i.e. not stretched or compressed, and when the door handle drives the connecting piece to rotate clockwise, the power spring 141 leaves the equilibrium position and moves clockwise, and the power door lock is opened; otherwise, the power-assisted door lock is closed, so that the operation of the automobile door lock mechanism is more stable. Meanwhile, the power spring 141 can also play a role in limiting and buffering, so that the door lock mechanism is prevented from changing the opening or closing state.
Specifically, the perpendicular distance from the connection position of the boosting mechanism 14 and the connecting piece to the center line of the central shaft is a first distance; the vertical distance from the joint of the driving arm 13 and the connecting piece to the central line of the central shaft is a second distance; the first distance is greater than the second distance.
In this embodiment, the first distance is greater than the second distance, i.e. the moment arm from the connection between the power assisting mechanism 14 and the connecting member to the central shaft is different from the moment arm from the connection between the driving arm 13 and the connecting member to the central shaft, so that the moment of the two is different.
The embodiment of the invention also provides an automobile which comprises an automobile door and an automobile body and further comprises the automobile door lock mechanism.
According to the embodiment of the invention, the automobile door lock mechanism converts the rotation of the automobile door handle into the linear motion of the lock body clamping plate through the driving arm, so that the structure is simple, and the transmission efficiency is high; and the power-assisted mechanism plays a damping role in the motion process of the lock body clamping plate, so that the vehicle door lock assembly can be stably operated, and the power-assisted mechanism is convenient to install and high in reliability.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims (6)

1. An automotive door lock mechanism, comprising: the door lock comprises a door handle, a door lock assembly (1) and a lock bolt (2); wherein, the door handle passes through the center pin with the door and is connected, lock bolt (2) are fixed in on the automobile body, door lock assembly (1) includes:
the lock body base (11) is fixedly arranged on the vehicle door;
the lock body clamping plate (12) is connected with the lock body base (11) in a sliding mode; the lock catch plate (12) comprises a first state of moving towards the lock bolt (2) relative to the lock base (11) and inserting into a hole groove in the interior of the lock bolt (2), and a second state of moving away from the lock bolt (2) relative to the lock base (11) and separating from the lock bolt (2);
one end of the driving arm (13) is connected with the lock body clamping plate (12), and the other end of the driving arm is connected to the central shaft through a connecting piece;
one end of the power-assisted mechanism (14) is connected with the connecting piece, and the other end of the power-assisted mechanism is fixedly connected with the vehicle door;
the central shaft is driven to rotate by the door handle, and the driving arm (13) is driven to move by the connecting piece; the driving arm (13) drives the lock body clamping plate (12) to move between the first state and the second state;
when the driving arm (13) drives the lock clamping plate (12) to move between the first state and the second state, a rotating force for driving the connecting piece to move towards the lock clamping plate (12) is applied to the connecting piece through the power-assisted mechanism (14);
the door handle includes: a door inner handle (15) and a door outer handle (16);
the vehicle door inner handle (15) and the vehicle door outer handle (16) are connected with the central shaft;
the lock body base (11) is provided with a sliding groove, wherein the lock body clamping plate (12) is arranged in the sliding groove and is connected with the lock body base (11) in a sliding fit manner.
2. A vehicle door lock mechanism according to claim 1, wherein the drive arm (13) is connected at both ends to the lock catch plate (12) and the connector by a pivot shaft, respectively.
3. A vehicle door lock mechanism according to claim 1, wherein said assist mechanism (14) comprises: the device comprises a pipe body and a rod body, wherein part of the rod body is inserted into the pipe body, and a power-assisted spring (141) is arranged in the pipe body;
the rod body is connected with the pipe body in a sliding fit mode, the power-assisted spring (141) abuts against the rod body, and the length of the part, extending out of the pipe body, of the rod body is changed.
4. An automotive door latch mechanism according to claim 3, characterised in that the booster mechanism (14) further comprises a mounting bracket (142);
the mounting bracket (142) is fixed on the vehicle door, and the rod body is connected with the mounting bracket (142) through a rotating shaft; the pipe body is connected with the connecting piece through a rotating shaft.
5. An automobile door lock mechanism according to claim 1, characterized in that a vertical distance from a junction of the assist mechanism (14) and the connecting member to a center line of the center shaft is a first distance;
the vertical distance from the connecting position of the driving arm (13) and the connecting piece to the central line of the central shaft is a second distance;
the first distance is greater than the second distance.
6. An automobile comprising a door and a body, further comprising an automobile door lock mechanism as claimed in any one of claims 1 to 5.
CN201711113447.XA 2017-11-13 2017-11-13 Automobile door lock mechanism and automobile Active CN107956338B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711113447.XA CN107956338B (en) 2017-11-13 2017-11-13 Automobile door lock mechanism and automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711113447.XA CN107956338B (en) 2017-11-13 2017-11-13 Automobile door lock mechanism and automobile

Publications (2)

Publication Number Publication Date
CN107956338A CN107956338A (en) 2018-04-24
CN107956338B true CN107956338B (en) 2023-03-14

Family

ID=61963594

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711113447.XA Active CN107956338B (en) 2017-11-13 2017-11-13 Automobile door lock mechanism and automobile

Country Status (1)

Country Link
CN (1) CN107956338B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2072122U (en) * 1990-09-14 1991-02-27 北京市永恒汽车锁厂 Reed type light lock for freight-car back door
FR2793275A1 (en) * 1999-05-04 2000-11-10 Valeo Securite Habitacle CLOSING DEVICE FOR A SIDE DOOR OF A MOTOR VEHICLE AND VEHICLE EQUIPPED WITH THIS DEVICE
EP1057955A1 (en) * 1999-06-02 2000-12-06 HAPPICH Fahrzeug- und Industrieteile GmbH Door locking system, particularly for cab doors of motor vehicles, such as mobile home
CN203129768U (en) * 2013-03-04 2013-08-14 玉环县天润航空机械制造厂 Locking mechanism of sliding cabin door
CN103422739A (en) * 2012-05-17 2013-12-04 株式会社有信 Counterweight mounting structure of door lock device
CN105735784A (en) * 2014-12-08 2016-07-06 苏州江南航天机电工业有限公司 Handle-detachable fork lock
CN205777912U (en) * 2016-06-01 2016-12-07 江苏奔宇车身制造有限公司 Car door locking device
CN106703561A (en) * 2017-04-06 2017-05-24 重庆怡海科技发展有限公司 Door lock mechanism and vehicle
CN207436745U (en) * 2017-11-13 2018-06-01 北京汽车研究总院有限公司 A kind of automobile door lock mechanism and automobile

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2072122U (en) * 1990-09-14 1991-02-27 北京市永恒汽车锁厂 Reed type light lock for freight-car back door
FR2793275A1 (en) * 1999-05-04 2000-11-10 Valeo Securite Habitacle CLOSING DEVICE FOR A SIDE DOOR OF A MOTOR VEHICLE AND VEHICLE EQUIPPED WITH THIS DEVICE
EP1057955A1 (en) * 1999-06-02 2000-12-06 HAPPICH Fahrzeug- und Industrieteile GmbH Door locking system, particularly for cab doors of motor vehicles, such as mobile home
CN103422739A (en) * 2012-05-17 2013-12-04 株式会社有信 Counterweight mounting structure of door lock device
CN203129768U (en) * 2013-03-04 2013-08-14 玉环县天润航空机械制造厂 Locking mechanism of sliding cabin door
CN105735784A (en) * 2014-12-08 2016-07-06 苏州江南航天机电工业有限公司 Handle-detachable fork lock
CN205777912U (en) * 2016-06-01 2016-12-07 江苏奔宇车身制造有限公司 Car door locking device
CN106703561A (en) * 2017-04-06 2017-05-24 重庆怡海科技发展有限公司 Door lock mechanism and vehicle
CN207436745U (en) * 2017-11-13 2018-06-01 北京汽车研究总院有限公司 A kind of automobile door lock mechanism and automobile

Also Published As

Publication number Publication date
CN107956338A (en) 2018-04-24

Similar Documents

Publication Publication Date Title
CN107636242B (en) Motor vehicle door
US7441738B2 (en) Monitor driving apparatus of car audio/video system
US8042821B2 (en) Extending and retracting device and vehicle step apparatus with the same
US8826708B2 (en) Locking mechanism
KR20210096651A (en) Nut-lead screw type automatic door opening and closing mechanism, automobile automatic door and automobile
CN108374616A (en) A kind of limiter and automobile
CN107956338B (en) Automobile door lock mechanism and automobile
US7117638B2 (en) Vehicle door open-close device
CN105735819A (en) Resistance increasing device for car electric tail door push rod
JP2005526199A (en) Device for variable turning of vehicle doors or vehicle gates
EP1971792A1 (en) Linear damper with integrated switch
CN108397076B (en) Driving device and automobile
KR20130060869A (en) Assemblage structure of outside handle for automobile
CN206158443U (en) Electronic tappet
CN207436745U (en) A kind of automobile door lock mechanism and automobile
CN102001344B (en) Bearing driving mechanism of railway vehicle door system
CN211173565U (en) Positioning lock device for cab door of loader
US11466499B2 (en) Manipulator for an access member, access member comprising the manipulator, system and method
CN202380848U (en) Automobile side sliding door lock assembly
KR101074280B1 (en) Windscreen wiper system in particular for a motor vehicle
CN219138719U (en) Suction and separation mechanism for door lock
US7128430B2 (en) Actuator for rear-view mirrors
KR101440718B1 (en) opening and closing equipment of door for bus
CN215398436U (en) Mounting bracket for transmission mechanism of electric folder
JP6444834B2 (en) Vehicle door opening and closing device

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
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20200605

Address after: 100130 Zhaofeng Town, Shunyi District, Beijing Zhaofeng industrial base Tongxin Road No. 1

Applicant after: BAIC GROUP ORV Co.,Ltd.

Address before: 101300, 99, Shuanghe Avenue, Renhe Town, Beijing, Shunyi District

Applicant before: BEIJING AUTOMOBILE RESEARCH GENERAL INSTITUTE Co.,Ltd.

GR01 Patent grant
GR01 Patent grant