CN102927146B - Constant velocity universal joint with fixed centre and automobile applying same - Google Patents
Constant velocity universal joint with fixed centre and automobile applying same Download PDFInfo
- Publication number
- CN102927146B CN102927146B CN201210413327.2A CN201210413327A CN102927146B CN 102927146 B CN102927146 B CN 102927146B CN 201210413327 A CN201210413327 A CN 201210413327A CN 102927146 B CN102927146 B CN 102927146B
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- Prior art keywords
- alley
- steel ball
- universal joint
- star sleeve
- constant velocity
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Classifications
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D3/224—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a sphere
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
- F16D3/44—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected the intermediate member being connected to the coupling parts by ridges, pins, balls, or the like guided in grooves or between cogs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention embodiment provides a constant velocity universal joint with a fixed centre and an automobile applying the same, and relates to the technical field of automobile fittings; and the constant velocity universal joint can be used for solving the problem that the flexibility of the automobile is lower in the prior art caused by the small limit pivot angle of the constant velocity universal joint with the fixed centre. According to the invention, an amplification device is arranged between a first star-shaped sleeve and an outer sleeve, a second steel ball on a first surface of the amplification device is matched with a first ball channel of the outer sleeve in a rolling manner, and a second ball channel on a second surface of the amplification device is matched with a first steel ball of the first star-shaped sleeve in a rolling manner; therefore, when the amplification device does not move and the first star-shaped sleeve swings towards certain direction, the first steel ball can roll in the second ball channel; when the first steel ball rolls to a limit position, the first steel ball drives the amplification device to move, the second steel ball rolls in the first ball channel, so that the first star-shaped sequentially swings a certain angle, and the pivot angle of the constant velocity universal joint with the fixed centre is increased; and meanwhile, the semidiameter is reduced when the automobile turns, and the flexibility of the automobile is improved.
Description
Technical field
The present invention relates to technical field of automobile, particularly relate to center fixed ball cage type constant velocity universal joint.
Background technique
In front-wheel drive and four-wheel drive vehicle, constant velocity universal joint is generally used for the connection between front-wheel and live axle, is coupled together by the axle that two axis do not overlap, and diaxon is rotated with identical angular velocity.
As a kind of constant velocity universal joint, there are known a kind of rzeppa universal joint, i.e. center fixed ball cage type constant velocity universal joint, as shown in Figure 1, comprising: star sleeve 11, overcoat 12, steel ball 13, retainer 14.Star sleeve 11 has spherical outer surface, and is placed in the overcoat 12 with spherical inside surface; The spherical inside surface of overcoat 12 is equidistantly provided with multiple the first alley 15 extended in the axial direction; The spherical outer surface of star sleeve 11 is equidistantly provided with multiple the second alley 16 extended in the axial direction; Retainer 14 is provided with the opening corresponding to steel ball size, and retainer 14 is placed between the first alley 15 and the second alley 16; Steel ball 13 is identical with the first alley 15, second alley 16 quantity, is placed in the opening of retainer 14, and rolls with the first alley 15, second alley 16 and coordinate.
In above-mentioned center fixed ball cage type constant velocity universal joint, steel ball 13 can roll in the ball track formed by the first alley 15 and the second alley 16, angle between the rotation axis of star sleeve 11 rotation axis and overcoat 12 is freely changed, achieves the swing of center fixed ball cage type constant velocity universal joint along any direction.
When the road surface that automobile running is rugged on road surface, automobile meeting bob also makes the pivot angle of center fixed ball cage type constant velocity universal joint ceaselessly change, due to the restriction by the first alley and the second alley length, make its limit pivot angle less, automobile can not be met and significantly beat up and down; In addition, during motor turning, steering angle is corresponding with the pivot angle of center fixed ball cage type constant velocity universal joint, and limit pivot angle is little, causes radius of turn large, reduces the flexibility of automobile.
Summary of the invention
Embodiments of the invention provide a kind of center fixed ball cage type constant velocity universal joint and apply its automobile, and solve in prior art, the limit pivot angle of center fixed ball cage type constant velocity universal joint is little, causes the problem that automobile flexibility is low.
For achieving the above object, embodiments of the invention adopt following technological scheme:
A kind of center fixed ball cage type constant velocity universal joint, comprises the first star sleeve, overcoat, the first steel ball and the first retainer, also comprises the amplitude device between described first star sleeve and described overcoat; The first surface of described amplitude device is provided with the second steel ball, and described second steel ball rolls with the first alley of described overcoat internal surface and coordinates, and the second surface of described amplitude device is provided with the second alley, and described first steel ball rolls with described second alley and coordinates.
Further, also comprise the second retainer, between described overcoat and described amplitude device, described second steel ball is through described second retainer.
Preferably, described second alley is equally spaced.
And further, described amplitude device comprises at least one amplification star sleeve; The outer surface of described amplification star sleeve has outer alley, and internal surface has interior alley; Multiple described amplification star sleeve is being arranged to the direction of described overcoat successively from described first star sleeve, and the outer alley of described amplification star sleeve is provided with the 3rd steel ball, the interior alley of the star sleeve of amplification outside in adjacent two described amplification star sleeves coordinates with the 3rd steel ball rolling at interior amplification star sleeve; The outer alley surface of amplification star sleeve adjacent with described overcoat in multiple described amplification star sleeve and the 3rd steel ball of upper setting thereof are respectively the first surface of described amplitude device and the second steel ball of upper setting thereof; In amplification star sleeve adjacent with described first star sleeve in multiple described amplification star sleeve, alley is described second alley.
Preferably, also comprise the 3rd retainer, between adjacent two described amplification star sleeves; Described 3rd steel ball is through described 3rd retainer.
Preferably, described interior alley and described outer alley are equally spaced.
Further, described first star sleeve, relative to described amplitude device motion formation first pivot angle, is 45 degree to 50 degree, and described amplitude device, relative to described overcoat motion formation second pivot angle, is 15 degree.
A kind of automobile, uses above-mentioned center fixed ball cage type constant velocity universal joint.
Center fixed ball cage type constant velocity universal joint provided by the invention and in applying its automobile, owing to being provided with amplitude device between the first star sleeve and overcoat, and the second steel ball of amplitude device first surface can roll with the first alley of overcoat internal surface and coordinates, the second alley on amplitude device second surface can coordinate with the first steel ball rolling of the first star sleeve, therefore, when amplitude device is motionless and the first star sleeve swings towards a direction, first steel ball rolls in the second alley, when the first steel ball rolling is to limit position (amplitude device moves to the position that can not move again relative to the first star sleeve), the motion of the first steel ball can drive amplitude device to move, second steel ball is rolled in the first alley, thus make the first star sleeve can continue to swing certain angle along above-mentioned swaying direction, and then increase the pivot angle of center fixed ball cage type constant velocity universal joint, when making automobile turning, radius reduces simultaneously, improve the flexibility of automobile.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.
Fig. 1 be in prior art center fixed ball cage type constant velocity universal joint partly cut open schematic diagram;
The cut-away view of a kind of center fixed ball cage type constant velocity universal joint that Fig. 2 provides for the embodiment of the present invention;
The cut-away view of the another kind of center fixed ball cage type constant velocity universal joint that Fig. 3 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described.
Embodiments provide a kind of center fixed ball cage type constant velocity universal joint, as shown in Figure 2, comprise the first star sleeve 11, overcoat 12, first steel ball 13 and the first retainer 14, also comprise the amplitude device A between the first star sleeve 11 and overcoat 12; The first surface of amplitude device A is provided with the second steel ball 21, second steel ball 21 and rolls with the first alley 15 of overcoat 12 internal surface and coordinate, and the second surface of amplitude device A is provided with the second alley 22, first steel ball 13 and rolls with the second alley 22 and coordinate.
In the center fixed ball cage type constant velocity universal joint that the embodiment of the present invention provides, owing to being provided with amplitude device between the first star sleeve and overcoat, and the second steel ball of amplitude device first surface can roll with the first alley of overcoat internal surface and coordinates, the second alley on amplitude device second surface can coordinate with the first steel ball rolling of the first star sleeve, therefore, when amplitude device is motionless and the first star sleeve swings towards a direction, first steel ball rolls in the second alley, when the first steel ball rolling is to limit position (amplitude device moves to the position that can not move again relative to the first star sleeve), the motion of the first steel ball can drive amplitude device to move, second steel ball is rolled in the first alley, thus make the first star sleeve can continue to swing certain angle along above-mentioned swaying direction, and then increase the pivot angle of center fixed ball cage type constant velocity universal joint, when making automobile turning, radius reduces simultaneously, improve the flexibility of automobile.
In the center fixed ball cage type constant velocity universal joint that above-described embodiment describes, also comprise the second retainer 23, between overcoat 12 and amplitude device A, the second steel ball 21 is through the second retainer 23.Second retainer 23, for carrying out spacing to the second steel ball 21, makes the second steel ball 21 can not depart from the second alley 22.
In the center fixed ball cage type constant velocity universal joint that above-described embodiment describes, the second alley 22 can be equally spaced.Second alley 22 is equally spaced and can makes universal joint in the process swung, the uniform force of all directions.
In the center fixed ball cage type constant velocity universal joint that above-described embodiment describes, the first star sleeve 11, relative to amplitude device A motion formation first pivot angle, can be 45 degree to 50 degree, and amplitude device A to move formation second pivot angle relative to overcoat 12, can be 15 degree.The size of the first pivot angle and the second pivot angle can be adjusted by the length changing the first alley 15 and the second alley 22.
In the center fixed ball cage type constant velocity universal joint that above-described embodiment describes, amplitude device A can comprise at least one amplification star sleeve, Fig. 2 shows the situation that amplitude device A only includes an amplification star sleeve, Fig. 3 shows the situation that amplitude device A comprises two amplification star sleeves, and amplitude device A also can comprise the amplification star sleeve more than two.Assembly identical in Fig. 2 and Fig. 3 has identical reference character.
As shown in Figure 3, the outer surface of each the amplification star sleeve (35,44) in multiple amplification star sleeve all has outer alley (34,41), and internal surface all has interior alley (32,43).Multiple amplification star sleeve is arranged successively on the direction from the first star sleeve 11 to overcoat 12, and amplification star sleeve (35,44) outer alley is provided with the 3rd steel ball (31,42) the interior alley 43 of the star sleeve of amplification outside 44 in two, adjacent amplification star sleeves rolls with the 3rd steel ball 31 at interior amplification star sleeve 35 and coordinates.
Outer alley 41 surface of amplification star sleeve 44 adjacent with overcoat 12 in multiple amplification star sleeve and the 3rd steel ball 42 of upper setting thereof are respectively the first surface of the amplitude device A described in above-described embodiment and the second steel ball of upper setting thereof; In amplification star sleeve 35 adjacent with the first star sleeve 11 in multiple amplification star sleeve, alley 32 is second alley of the amplitude device A described in above-described embodiment.
In the center fixed ball cage type constant velocity universal joint that above-described embodiment describes, the 3rd retainer 33 can also be comprised, between adjacent two amplification star sleeves; 3rd steel ball 31 is through the 3rd retainer 33.
It should be noted that: in Fig. 3, second retainer of the amplitude device A that retainer 45 describes for above-described embodiment.In Fig. 2, the corresponding relation between each component Name of amplitude device A and each component Name of amplification star sleeve is: the first surface of amplitude device A is the surface of the outer alley of amplification star sleeve; The second steel ball 21 that the first surface of amplitude device A is arranged is the 3rd steel ball that the outer alley of amplification star sleeve is arranged; Second alley 22 of amplitude device A is the interior alley of amplification star sleeve.
As shown in Figure 3, the 3rd retainer 33, for carrying out spacing to the 3rd steel ball 31, makes the 3rd steel ball 31 can not depart from the interior alley 43 of amplification star sleeve 44 outside and the outer alley 34 at interior amplification star sleeve 35.
In the center fixed ball cage type constant velocity universal joint that above-described embodiment describes, interior alley (32,43) and the outer alley (34,41) of amplification star sleeve (35,44) can be equally spaced.Interior alley and outer alley are equally spaced and make universal joint in the process swung, amplitude device uniform force in all directions.
Under comprising two kinds of situations of an amplification star sleeve and two amplification star sleeves to amplitude device A respectively below, the working principle of center fixed ball cage type constant velocity universal joint is described in detail.
Mode 1: amplitude device A comprises an amplification star sleeve
As shown in Figure 2, the outer surface of amplification star sleeve 25 has outer alley 24, and internal surface has interior alley 22, i.e. second alley 22 of amplitude device A.
When center fixed type constant velocity cardan joint starts to swing, first be the first star sleeve 11, the first swing mechanism that first retainer 14 and amplification star sleeve 25 internal surface are formed comes into operation, first swing mechanism is identical with the swing principle of conventional center fixed type constant velocity cardan joint, first steel ball 13 is placed in the opening of the first retainer 14, and roll in the space that alley 16 and interior alley 22 are formed, drive the first retainer 14 to slide between alley 16 and interior alley 22 simultaneously, when the first steel ball 13 is rolled into limit position (the first star sleeve 11 moves to the position that can not move again relative to amplification star sleeve 25), first swing mechanism reaches capacity pivot angle.
As shown in Figure 2, when center fixed type constant velocity cardan joint needs the swing of greater angle, by amplification star sleeve 25 outer surface, the second swing mechanism that second retainer 23 and overcoat 12 are formed comes into operation, second swing mechanism is identical with the swing principle of conventional center fixed type constant velocity cardan joint, second steel ball 21 is placed in the opening of the second retainer 23, and roll in the space that the first alley 15 and outer alley 24 are formed, drive the second retainer 23 to slide between the first alley 15 and outer alley 24 simultaneously, when the second steel ball 21 rolls limit position (amplification star sleeve 25 moves to the position that can not move again relative to overcoat 12), second swing mechanism reaches capacity pivot angle, thus increase the pendulum angle of center fixed ball cage type universal joint.
Mode 2: amplitude device A comprises two amplification star sleeves (35,44)
As shown in Figure 3, the outer surface of the first amplification star sleeve 35 is provided with outer alley the 34, three steel ball 31, and internal surface is provided with interior alley 32, i.e. the second alley 22 in the amplitude device A of above-described embodiment description; The outer surface of the second amplification star sleeve 44 is provided with outer alley 41, the 3rd steel ball 42, and internal surface is provided with interior alley 43.
First star sleeve 11, first retainer 14 and amplification star sleeve 25 internal surface form the first swing mechanism; First amplification star sleeve 35 outer surface, the 3rd retainer 33 and the second amplification star sleeve 44 internal surface form the second swing mechanism, and these two swing mechanisms are identical with the working principle of the second swing mechanism with the first swing mechanism in mode 1.
As shown in Figure 3, universal joint in the manner be universal joint in mode 1 basis on add a second amplification star sleeve 44, therefore, add by the outer surface of the second amplification star sleeve 44, 3rd swing mechanism of the first alley 15 formation of the second retainer 45 and overcoat 12, 3rd swing mechanism is identical with the swing principle of conventional center fixed type constant velocity cardan joint, 3rd steel ball 42 rolls in the space that the first alley 15 and the 4th alley 41 are formed, when the 3rd steel ball 42 is rolled to limit position (the second amplification star sleeve 44 moves to the position that can not move again relative to overcoat 12), 3rd swing mechanism reaches capacity pivot angle, thus further increase the pendulum angle of center fixed ball cage type universal joint.
When in amplitude device A, the number of amplification star sleeve is greater than two, internal surface and/or the outer surface of newly-increased amplification star sleeve can form new swing mechanism, identical with the swing principle of each swing mechanism that above-described embodiment describes, the object increasing universal joint pivot angle further can be realized.
The present invention also provides a kind of automobile, employs above-mentioned center fixed ball cage type constant velocity universal joint.
In the automobile that the embodiment of the present invention provides, owing to employing the center fixed ball cage type universal joint that can increase pivot angle that above-described embodiment describes, when making automobile turning, radius reduces, and improves the flexibility of automobile.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (7)
1. a center fixed ball cage type constant velocity universal joint, comprise the first star sleeve, overcoat, the first steel ball and the first retainer, also comprise the amplitude device between described first star sleeve and described overcoat, the first surface of described amplitude device is provided with the second steel ball, described second steel ball rolls with the first alley of described overcoat internal surface and coordinates, the second surface of described amplitude device is provided with the second alley, described first steel ball rolls with described second alley and coordinates, it is characterized in that, described amplitude device comprises at least one amplification star sleeve; The outer surface of described amplification star sleeve has outer alley, and internal surface has interior alley; Multiple described amplification star sleeve is being arranged to the direction of described overcoat successively from described first star sleeve, and the outer alley of described amplification star sleeve is provided with the 3rd steel ball, the interior alley of the star sleeve of amplification outside in adjacent two described amplification star sleeves coordinates with the 3rd steel ball rolling at interior amplification star sleeve;
The outer alley surface of amplification star sleeve adjacent with described overcoat in multiple described amplification star sleeve and the 3rd steel ball of upper setting thereof are respectively the first surface of described amplitude device and the second steel ball of upper setting thereof; In amplification star sleeve adjacent with described first star sleeve in multiple described amplification star sleeve, alley is described second alley.
2. center fixed ball cage type constant velocity universal joint according to claim 1, is characterized in that, also comprises the second retainer, and between described overcoat and described amplitude device, described second steel ball is through described second retainer.
3. center fixed ball cage type constant velocity universal joint according to claim 1, is characterized in that, described second alley is equally spaced.
4. center fixed ball cage type constant velocity universal joint according to claim 1, is characterized in that, also comprises the 3rd retainer, between adjacent two described amplification star sleeves; Described 3rd steel ball is through described 3rd retainer.
5. center fixed ball cage type constant velocity universal joint according to claim 1, is characterized in that, described interior alley and described outer alley are equally spaced.
6. center fixed ball cage type constant velocity universal joint according to claim 1, it is characterized in that, described first star sleeve, relative to described amplitude device motion formation first pivot angle, is 45 degree to 50 degree, described amplitude device, relative to described overcoat motion formation second pivot angle, is 15 degree.
7. an automobile, is characterized in that, employs the center fixed ball cage type constant velocity universal joint described in any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210413327.2A CN102927146B (en) | 2012-10-25 | 2012-10-25 | Constant velocity universal joint with fixed centre and automobile applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210413327.2A CN102927146B (en) | 2012-10-25 | 2012-10-25 | Constant velocity universal joint with fixed centre and automobile applying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102927146A CN102927146A (en) | 2013-02-13 |
| CN102927146B true CN102927146B (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210413327.2A Active CN102927146B (en) | 2012-10-25 | 2012-10-25 | Constant velocity universal joint with fixed centre and automobile applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927146B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3252328A1 (en) * | 2016-05-31 | 2017-12-06 | Hyundaiwia Corporation | Ball-type constant velocity joint |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6532714B2 (en) * | 2015-03-13 | 2019-06-19 | Ntn株式会社 | Fixed type constant velocity universal joint and assembling method of fixed type constant velocity universal joint |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2312944A (en) * | 1996-05-03 | 1997-11-12 | Delphi France Automotive Sys | Constant velocity universal joint |
| US6368223B1 (en) * | 1997-07-16 | 2002-04-09 | Nsk Ltd. | Rolling bearing unit and constant velocity joint for wheels |
| CN101300430A (en) * | 2005-10-05 | 2008-11-05 | 轴造型工程公司 | Joint arrangement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10220712B4 (en) * | 2002-05-10 | 2005-07-07 | Gkn Driveline International Gmbh | Counter track joint with inner cage support |
-
2012
- 2012-10-25 CN CN201210413327.2A patent/CN102927146B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2312944A (en) * | 1996-05-03 | 1997-11-12 | Delphi France Automotive Sys | Constant velocity universal joint |
| US6368223B1 (en) * | 1997-07-16 | 2002-04-09 | Nsk Ltd. | Rolling bearing unit and constant velocity joint for wheels |
| CN101300430A (en) * | 2005-10-05 | 2008-11-05 | 轴造型工程公司 | Joint arrangement |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3252328A1 (en) * | 2016-05-31 | 2017-12-06 | Hyundaiwia Corporation | Ball-type constant velocity joint |
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| Publication number | Publication date |
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| CN102927146A (en) | 2013-02-13 |
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Effective date of registration: 20200107 Address after: 314200 north side of Rongrong Road, east side of Pingshan Avenue, Pinghu Economic and Technological Development Zone, Jiaxing City, Zhejiang Province Patentee after: Pinghu branch of Great Wall Motor Co., Ltd Address before: 071000 No. 2266 Chaoyang South Street, Hebei, Baoding Patentee before: Changcheng Automobile Co., Ltd. |