CN108981529B - Checking fixture for automobile bracket - Google Patents
Checking fixture for automobile bracket Download PDFInfo
- Publication number
- CN108981529B CN108981529B CN201810653294.6A CN201810653294A CN108981529B CN 108981529 B CN108981529 B CN 108981529B CN 201810653294 A CN201810653294 A CN 201810653294A CN 108981529 B CN108981529 B CN 108981529B
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- detection
- bracket
- main body
- profile
- base
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- 238000001514 detection method Methods 0.000 claims abstract description 112
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 25
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a checking fixture of an automobile bracket, which comprises: the bracket comprises a bracket main body and a plurality of extension arms formed on the top edge of the bracket main body, wherein a plurality of first detection holes distributed along the length direction of the bracket main body are formed in the bracket main body, and a second detection hole is formed in the top end surface of each extension arm; a clamp unit provided with a clamp head; a detection pin unit provided on one side of the bracket; a profile detection unit provided on the opposite side of the bracket; the go-no-go gauge is inserted into the movable bushing after penetrating through the second detection hole during detection; the extension arms positioned on the two side end parts of the bracket main body are also provided with downward bent branch arms, and the branch arms are provided with first detection holes. The checking fixture of the automobile bracket has the advantage of convenience in detection.
Description
Technical Field
The invention relates to the technical field of detection tools, in particular to a detection tool for an automobile bracket.
Background
The gauge is a simple tool for controlling various sizes of products in industrial production enterprises, can effectively improve production efficiency and control quality, and is suitable for mass production of products. In the automobile manufacturing industry, after the production of a bracket on an automobile body is completed, holes and molded surfaces of the bracket need to be inspected by using an inspection tool, so that the inspection tool of the automobile bracket needs to be studied.
Disclosure of Invention
Aiming at the defects in the technology, the invention provides a detection tool for detecting the automobile bracket conveniently.
The technical scheme adopted for solving the technical problems is as follows: an inspection tool for an automobile bracket, comprising: the bracket comprises a bracket main body and a plurality of extension arms formed on the top edge of the bracket main body, wherein a plurality of first detection holes distributed along the length direction of the bracket main body are formed in the bracket main body, and a second detection hole is formed in the top end surface of each extension arm; the clamp unit is used for clamping the bracket and is provided with a clamp head used for pressing the extension arm; the detection pin units are used for detecting the position degree of the first detection holes and are arranged on one side of the bracket, and the detection pin units are arranged in one-to-one correspondence with the first detection holes; the profile detection unit is used for detecting the profile of the bracket and is arranged on the opposite side of the bracket, and the side wall, opposite to the profile detection unit, on the bracket main body is the profile to be detected; the go-no-go gauge is inserted into the movable bushing after penetrating through the second detection hole during detection; the extension arms positioned on the two side end parts of the bracket main body are also provided with downward bent branch arms, and the branch arms are provided with first detection holes.
Preferably, the support main body is rectangular form of buckling, the support main body includes a straight strip portion, shaping is in the bending portion of straight strip portion both sides, straight strip portion with bending portion integrated into one piece, the shaping has the extension arm setting of branch support arm is in on the free end of bending portion.
Preferably, the extension arm and the bracket body are integrally formed.
Preferably, the device further comprises a bottom plate, wherein the clamp unit, the detection pin unit and the profile detection unit are fastened on the top end surface of the bottom plate, and the bracket is arranged above the bottom plate through the clamp unit.
Preferably, the four corners of the bottom plate are respectively provided with a positioning sleeve, the bottom plate is also symmetrically provided with a pair of handles, and the handles are fastened on a pair of opposite edges of the bottom plate.
Preferably, the clamp unit comprises a support column fixedly arranged below the second detection hole, a stand column fixedly arranged at one side of the support column, a base fastened at the top of the stand column, a pressing rod pivoted with the base, a handle and a connecting arm connected with the pressing rod and the handle, wherein the clamp head is formed on the end part, close to one side of the support, of the pressing rod, one end of the connecting arm is pivoted with the handle, the other end of the connecting arm is pivoted with the pressing rod, a blind hole opposite to the second detection hole is formed at the top of the support column, the top end face of the support column is a detection reference surface, a movable bushing matched with the go-no-go gauge is arranged in the blind hole, and when the handle is pulled, the pressing rod is driven by the handle to press or loosen the extension arm.
Preferably, a first limiting block for limiting the lifting angle of the pressing rod is formed on the side wall of the base; the connecting arm is provided with a second limiting block which is propped against the pressure rod when the clamp head of the pressure rod is pressed on the extension arm.
Preferably, the compression bar comprises a first bar part pivoted with the base and the connecting arm, and a second bar part formed with the clamp head and detachably connected with the first bar part.
Preferably, the profile detection unit comprises a profile block fixedly arranged on the other side of the support through a fixing column, the profile block is similar to the support body in shape, and a detection gap exists between the profile block and the to-be-detected profile of the support body.
Preferably, the detection pin unit comprises a base column fastened at one side of the support, a base block fastened at the top of the base column, and a sliding rod penetrating through the base block, wherein the sliding rod is arranged on the base block through a linear bearing, a detection pin is fastened at one side end part of the sliding rod, which is close to the support, a holding rod is fastened at the opposite side end part, and grooves which are in one-to-one correspondence with the first detection holes and are used for the insertion of the detection pins during detection are formed in the model block.
Compared with the prior art, the invention has the beneficial effects that: in the detection tool for the automobile bracket, the clamp head is pressed on the extension arm, the extension arm is attached to the detection reference surface at the top of the support column, and the detection reference surface is a straight plane, so that the detection tool has the advantages of convenience in clamping and good positioning effect; the position degree detection of the first detection hole can be conveniently realized through the detection pin unit, the position degree detection of the second detection hole can be conveniently realized through the go-no-go gauge and the movable bushing, the detection of the molded surface of the bracket main body can be conveniently realized through the molded surface detection unit, and the detection device has the advantage of convenience in detection; the compression bar comprises a first bar part and a second bar part which is detachably connected with the first bar part, so that the strength and the rigidity of the compression bar are effectively improved, and the service life of the compression bar is effectively prolonged; when the binding clip is pressed on the extension arm, the second limiting block can be propped against the compression bar, so that the compression bar can be effectively prevented from loosening the extension arm during detection, and the positioning device has the advantage of good positioning effect.
Drawings
FIG. 1 is a schematic diagram of the structure of the detecting tool for the automobile bracket in the detection;
FIG. 2 is a schematic structural view of the testing fixture of the automobile bracket in a non-working state;
FIG. 3 is a schematic structural view of the stent of the present invention;
Fig. 4 is a schematic structural view of the clamp unit of the present invention;
FIG. 5 is a schematic view of the structure of the connecting arm of the present invention;
fig. 6 is an exploded structural view of the detection pin unit of the present invention;
FIG. 7 is a schematic view of the structure of the profile detection unit of the present invention;
FIG. 8 is a schematic view of the positional relationship between the go-no go gauge and the setting seat of the present invention;
fig. 9 is a schematic structural view of the placement seat of the present invention.
In the figure: 10. a bottom plate; 11. a handle; 12. a positioning sleeve; 20. a bracket; 21. a holder main body; 211. a first detection hole; 22. an extension arm; 221. a second detection hole; 23. a branch arm; 30. a clamp unit; 31. a column; 32. a base; 321. a first limiting block; 33. a compression bar; 331. a first lever portion; 332. a second lever portion; 333. a clamp head; 34. a handle; 35. a connecting arm; 351. a second limiting block; 36. a support column; 37. a movable bushing; 40. a detection pin unit; 41. a base column; 42. a base block; 43. a linear bearing; 44. a slide bar; 45. a detection pin; 46. a grip lever; 50. a profile detection unit; 51. fixing the column; 52. a profile block; 521. a groove; 60. go-no-go gauge; 70. a placement seat; 71. an elastic arm; 711. and a through hole.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
As shown in fig. 1 to 8, the present invention provides a gauge for an automobile bracket, including: the bracket 20 comprises a bracket main body 21 and a plurality of extension arms 22 formed on the top edge of the bracket main body 21, wherein a plurality of first detection holes 211 distributed along the length direction of the bracket main body 21 are formed on the bracket main body 21, and a second detection hole 221 is formed on the top end surface of the extension arm 22; a clamp unit 30 for clamping the bracket 20, which is provided with a clamp head 333 for pressing the extension arm 22; a detection pin unit 40 for detecting the position degree of the first detection hole 211, which is disposed at one side of the bracket 20, the detection pin unit 40 being disposed in one-to-one correspondence with the first detection hole 211; a profile detection unit 50 for detecting a profile of the bracket 20, which is disposed at the opposite side of the bracket 20, and a side wall of the bracket body 21 opposite to the profile detection unit 50 is the profile to be detected; a go-no-go gauge 60 inserted into the movable bush 37 after passing through the second detection hole 221 during detection; the extension arm 22 located at two side ends of the bracket main body 21 is further formed with a downward bent branch arm 23, and the branch arm 23 is provided with the first detection hole 211.
As an embodiment of the present disclosure, as shown in fig. 3, the bracket main body 21 is in a strip shape, the bracket main body 21 includes a straight strip portion and bending portions formed at two sides of the straight strip portion, the straight strip portion and the bending portions are integrally formed, and the extension arm 22 formed with the branch arm 23 is disposed at a free end of the bending portion.
As an embodiment of the present solution, as shown in fig. 3, the extension arm 22 and the bracket main body 21 are integrally formed, which has the advantage of convenient processing; in the present invention, the number of the extension arms 22 is set to 4, specifically, two extension arms 22 in the middle are located on the bracket main body 21, and the remaining two extension arms are located on the bending portions on two sides respectively.
As an embodiment of the present solution, as shown in fig. 1 and 2, a base plate 10 is further included, the clamp unit 30, the detection pin unit 40, and the profile detection unit 50 are fastened to the top end surface of the base plate 10, and the bracket 20 is disposed above the base plate 10 through the clamp unit 30.
As an embodiment of the present solution, as shown in fig. 1 and 2, positioning sleeves 12 are respectively disposed at four corners of the bottom plate 10, a pair of handles 11 are symmetrically disposed on the bottom plate 10, and the handles 11 are fastened on a pair of opposite edges of the bottom plate 10.
As an embodiment of the present disclosure, as shown in fig. 1, 2, 4 and 8, the clamp unit 30 includes a support column 36 fixedly disposed below the second detection hole 221, a stand column 31 fixedly disposed at one side of the support column 36, a base 32 fastened at the top of the stand column 31, a pressing rod 33 pivotally connected to the base 32, a handle 34, and a connecting arm 35 connecting the pressing rod 33 and the handle 34, wherein the end of the pressing rod 33 near one side of the support frame 20 is formed with a clamp head 333, one end of the connecting arm 35 is pivotally connected to the handle 34, the other end is pivotally connected to the pressing rod 33, a blind hole opposite to the second detection hole 221 is formed at the top of the support column 36, the top end surface of the support column 36 is a detection reference surface, the blind hole is provided with a movable bushing 37 matched with the stop gauge 60, and when the handle 34 is pulled, the pressing rod 33 is pushed or released by the handle 34.
As an embodiment of the present disclosure, as shown in fig. 4 and 5, a first limiting block 321 for limiting the lifting angle of the pressing rod 33 is formed on the side wall of the base 32; the connecting arm 35 is formed with a second limiting block 351 that abuts against the pressing rod 33 when the clamp head 333 of the pressing rod 33 is pressed against the extension arm 22.
As an embodiment of the present disclosure, as shown in fig. 4, the compression bar 33 includes a first rod portion 331 pivotally connected to the base 32 and the connecting arm 35, and a second rod portion 332 formed with the clamp head 333 and detachably connected to the first rod portion 331.
As an embodiment of the present solution, as shown in fig. 7, the profile detection unit 50 includes a profile block 52 fixedly disposed on the other side of the support 20 through a fixing post 51, the profile block 52 has a shape similar to that of the support body 21, and a detection gap exists between the profile block 52 and the profile to be detected of the support body 21.
As an example of this embodiment, as shown in fig. 7, the size of the detection gap is set to 3mm.
As an embodiment of the present solution, as shown in fig. 6, the detection pin unit 40 includes a base column 41 fastened on one side of the support 20, a base block 42 fastened on the top of the base column 41, and a sliding rod 44 disposed through the base block 42, wherein the sliding rod 44 is disposed on the base block 42 through a linear bearing 43, a detection pin 45 is fastened on one end portion of the sliding rod 44 near the support 20, a holding rod 46 is fastened on the opposite end portion, and a groove 521 corresponding to the first detection hole 211 one by one and into which the detection pin 45 is inserted during detection is disposed on the mold 52.
As an embodiment of the present solution, as shown in fig. 9, the placement seat 70 is used for placing the go-no-go gauge 60 and the snap gauge in the non-working state, and the snap gauge is used for detecting the profile of the bracket 20; the placing seat 70 is formed by bending an elastic sheet, two opposite ends of the elastic sheet are bent to form a pair of symmetrically arranged elastic arms 71, and a containing space for clamping the go-no-go gauge 60 is arranged between the pair of elastic arms 71; the top bending part of the elastic arm 71 is provided with a through hole 711.
The working principle of the checking fixture of the automobile bracket is as follows: firstly, the extension arm 22 of the bracket 20 is attached to the top of the support column 36, so that the extension arm 22 is well attached to a detection reference surface of the top end surface of the support column 36, then two holes are selected from the second detection holes 221 to serve as positioning holes, and positioning pins are inserted into the positioning holes to realize clamping and positioning of the bracket 20; in the detection process, the go-no-go gauge 60 is taken off from the placement seat 70, the go-no-go gauge 60 is inserted into the movable bushing 37, and if the go end of the go-no-go gauge 60 can be inserted into the movable bushing 37 and the stop end of the go-no-go gauge cannot pass through the movable bushing 37, the position degree of the second detection hole 221 is qualified; when the position degree of the first detection hole 211 is detected, the slide bar 44 is pushed, and if the detection pin 45 on the slide bar 44 can be smoothly inserted into the corresponding groove 521 on the block 52, the position degree of the first detection hole 211 is qualified; when the molded surface of the bracket main body is detected, the gauge is used for measuring, and if the through end of the gauge can pass through a detection gap between the block 52 and the molded surface to be detected of the bracket main body 21 and the end of the gauge cannot pass through the detection gap, the gauge is qualified.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (3)
1. An inspection tool for an automobile bracket, comprising:
The bracket (20) comprises a bracket main body (21) and a plurality of extension arms (22) formed on the top edge of the bracket main body (21), wherein a plurality of first detection holes (211) distributed along the length direction of the bracket main body (21) are formed on the bracket main body (21), and a second detection hole (221) is formed on the top end surface of each extension arm (22);
a clamp unit (30) for clamping the bracket (20), which is provided with a clamp head (333) for pressing the extension arm (22);
A detection pin unit (40) for detecting the position degree of the first detection hole (211), which is arranged at one side of the bracket (20), wherein the detection pin unit (40) is arranged in one-to-one correspondence with the first detection hole (211);
A profile detection unit (50) for detecting the profile of the bracket (20), which is provided on the opposite side of the bracket (20), wherein the side wall of the bracket main body (21) opposite to the profile detection unit (50) is the profile to be detected;
a go-no-go gauge (60) which is inserted into the movable bushing (37) after passing through the second detection hole (221) during detection;
The extension arms (22) positioned on the two side ends of the bracket main body (21) are also provided with downward bent branch arms (23), and the branch arms (23) are provided with first detection holes (211);
The checking fixture of the automobile bracket further comprises a bottom plate (10), the clamp unit (30), the detection pin unit (40) and the profile detection unit (50) are fastened on the top end surface of the bottom plate (10), and the bracket (20) is arranged above the bottom plate (10) through the clamp unit (30);
four corners of the bottom plate (10) are respectively provided with a positioning sleeve (12), the bottom plate (10) is also symmetrically provided with a pair of handles (11), and the handles (11) are fastened on a pair of opposite edges of the bottom plate (10);
The clamp unit (30) comprises a support column (36) fixedly arranged below the second detection hole (221), a stand column (31) fixedly arranged at one side of the support column (36), a base (32) fastened at the top of the stand column (31), a pressing rod (33) and a handle (34) which are pivoted with the base (32), and a connecting arm (35) connecting the pressing rod (33) and the handle (34), wherein the end part of the pressing rod (33) close to one side of the bracket (20) is formed with a clamp head (333), one end of the connecting arm (35) is pivoted with the handle (34), the other end of the connecting arm is pivoted with the pressing rod (33), a blind hole opposite to the second detection hole (221) is formed at the top of the support column (36), the top end surface of the support column (36) is a detection reference surface, and the inside of the blind hole is provided with a movable bushing (37) matched with the stop gauge (60), and when the handle (34) is pulled, the pressing rod (34) is driven to be pressed down or released;
A first limiting block (321) for limiting the lifting angle of the pressing rod (33) is formed on the side wall of the base (32); a second limiting block (351) which is abutted against the pressing rod (33) when the clamp head (333) of the pressing rod (33) is pressed on the extension arm (22) is formed on the connecting arm (35);
The compression bar (33) comprises a first bar part (331) pivoted with the base (32) and the connecting arm (35), and a second bar part (332) which is provided with the clamp head (333) in a forming way and is detachably connected with the first bar part (331);
The profile detection unit (50) comprises a profile block (52) fixedly arranged on the other side of the bracket (20) through a fixing column (51), the profile block (52) is similar to the bracket main body (21) in shape, and a detection gap exists between the profile block (52) and the to-be-detected profile of the bracket main body (21);
The detection pin unit (40) comprises a base column (41) fastened on one side of the support (20), a base block (42) fastened on the top of the base column (41) and a sliding rod (44) penetrating through the base block (42), wherein the sliding rod (44) is arranged on the base block (42) through a linear bearing (43), a detection pin (45) is fastened on one side end part of the sliding rod (44) close to the support (20), a holding rod (46) is fastened on the other opposite side end part, and a groove (521) which corresponds to the first detection hole (211) one by one and is used for the insertion of the detection pin (45) during detection is formed in the mold block (52).
2. The gauge according to claim 1, wherein the bracket body (21) is in a strip-shaped bent shape, the bracket body (21) includes a straight strip portion and bent portions formed at both sides of the straight strip portion, the straight strip portion and the bent portions are integrally formed, and the extension arm (22) formed with the branch arm (23) is disposed at a free end of the bent portion.
3. The gauge of claim 1, characterized in that the extension arm (22) and the bracket body (21) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810653294.6A CN108981529B (en) | 2018-06-22 | 2018-06-22 | Checking fixture for automobile bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810653294.6A CN108981529B (en) | 2018-06-22 | 2018-06-22 | Checking fixture for automobile bracket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108981529A CN108981529A (en) | 2018-12-11 |
| CN108981529B true CN108981529B (en) | 2024-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810653294.6A Active CN108981529B (en) | 2018-06-22 | 2018-06-22 | Checking fixture for automobile bracket |
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| Country | Link |
|---|---|
| CN (1) | CN108981529B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345833B (en) * | 2019-08-15 | 2025-04-04 | 天津正道机械制造有限公司 | A fixture for detecting automobile protective bracket |
| CN110726350A (en) * | 2019-11-29 | 2020-01-24 | 安徽微威胶件集团有限公司 | Automobile suspension bracket checking fixture and checking method thereof |
| CN111672770A (en) * | 2020-04-27 | 2020-09-18 | 深圳市富优驰科技有限公司 | Automatic gauge passing machine for waterproof ring support of lifting camera |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN208366206U (en) * | 2018-06-22 | 2019-01-11 | 宇吉检汽车科技（昆山）有限公司 | A kind of cubing of automobile support |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100196161B1 (en) * | 1996-08-22 | 1999-06-15 | 양재신 | Manufacturing state measurement of the side outer panel for reinforce the car |
| CN201844796U (en) * | 2010-11-12 | 2011-05-25 | 上海和达汽车配件有限公司 | Check tool used for checking reinforcing plate of main bracket at front end of vehicle |
| CN103528468A (en) * | 2013-10-25 | 2014-01-22 | 无锡市麦希恩机械制造有限公司 | Detection device structure of A pillar reinforcing plate |
| US10365185B2 (en) * | 2016-05-11 | 2019-07-30 | Toyota Motor Engineering & Manufacturing North America, Inc. | Vehicle suspension system bracket pocket dimensional verifier tools and methods of use |
| CN206683533U (en) * | 2017-04-19 | 2017-11-28 | 深圳华阳宇光汽车配件有限公司 | A kind of auto parts machinery clamp detects tool |
| CN207197402U (en) * | 2017-09-22 | 2018-04-06 | 芜湖瑞丰机械制造有限公司 | A kind of air conditioning for automobiles mounting bracket cubing |
| CN207280327U (en) * | 2017-10-23 | 2018-04-27 | 宁波莱普机械有限公司 | A kind of automobile tail gate rain shaving electrical machine reinforcing plate cubing |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208366206U (en) * | 2018-06-22 | 2019-01-11 | 宇吉检汽车科技（昆山）有限公司 | A kind of cubing of automobile support |
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| CN108981529A (en) | 2018-12-11 |
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Effective date of registration: 20240919 Address after: No. 27-2, Yonglin Line, Shangtian Street, Fenghua District, Ningbo City, Zhejiang Province 315000 Applicant after: Ningbo Bohua Machinery Parts Co.,Ltd. Country or region after: China Address before: 215300 No. 28 Sifang Road, Yushan Town, Kunshan City, Suzhou, Jiangsu Applicant before: YUJIJIAN AUTOMOBILE TECHNOLOGY (KUNSHAN) Co.,Ltd. Country or region before: China |
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