CN104554156A - Double-scraper flexible-wall and hydraulic swinging wiper brush connecting rod type windscreen wiper - Google Patents
Double-scraper flexible-wall and hydraulic swinging wiper brush connecting rod type windscreen wiper Download PDFInfo
- Publication number
- CN104554156A CN104554156A CN201510021072.9A CN201510021072A CN104554156A CN 104554156 A CN104554156 A CN 104554156A CN 201510021072 A CN201510021072 A CN 201510021072A CN 104554156 A CN104554156 A CN 104554156A
- Authority
- CN
- China
- Prior art keywords
- wiper
- flexible wall
- connecting rod
- scraping blade
- rain brush
- 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.)
- Granted
Links
- 238000007790 scraping Methods 0.000 claims abstract description 55
- 239000003921 oil Substances 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 8
- 239000002390 adhesive tape Substances 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000004888 barrier function Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010047513 Vision blurred Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/12—Wipers or the like, e.g. scrapers characterised by the drive hydraulically driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/28—Wipers or the like, e.g. scrapers characterised by a plurality of wipers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/38—Wiper blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/38—Wiper blades
- B60S2001/3812—Means of supporting or holding the squeegee or blade rubber
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Brushes (AREA)
Abstract
The invention provides a double-scraper flexible-wall and hydraulic swinging wiper brush connecting rod type windscreen wiper. The double-scraper flexible-wall and hydraulic swinging connecting rod type windscreen wiper comprises a wiper motor, a wiper brush driving motor and a wiper brush. The double-scraper flexible-wall and hydraulic swinging wiper brush connecting rod type windscreen wiper is characterized in that two gear rack swinging oil cylinders are communicated through a hydraulic oil pipe to transmit torque; a connecting rod rocker arm driving mechanism is arranged on a driving gear rack swinging oil cylinder. The double-scraper flexible-wall and hydraulic swinging wiper brush connecting rod type windscreen wiper has the beneficial effects that the wiper brush driving mechanism is hydraulically transmitted through a flexible pipeline; the mounting is greatly avoided structural limitation; in addition, the a completely closed structure is provided; the working generates little noise; the complex external environment and long-distance transmission particularly apply, and moreover, outside influence is prevented, so that the shortage that the wiper motor is burnt through an external barrier can be avoided; the noise in a vehicle can be effectively reduced; the internal comfort of the vehicle in running can be improved; rubber strips of the wiper are supported through flexible walls and can be clung to a windscreen; the scraping efficiency of the double-scraper structure is doubled that of the general single-scraper structure.
Description
Art
The present invention relates to a kind of wiper, belong to vehicle wiper field, the especially hydraulicdriven wiper of flexible duct.
Background technology
At present, the rain brush driver train majority of the wiper on market catches up with transmission for connecting, and noise during its work is comparatively large, and, connect and catch up with transmission device to be open type, comparatively large by external action, operationally easily cause rain shaving electrical machine to burn as run into barrier obstruction; The supporting station of the scraping blade of the adhesive tape for wiper blade on market is all rigidity usually, because windshield is curve form, in addition manufacture the reason such as reason and use procedure wearing and tearing and cause windshield surface imperfection defect, scraping blade under non-yielding prop is difficult to adapt to the change on windshield surface, and only has a scraping blade, and in the process struck off, scrape cleanliness low, strike off efficiency difference, not easily quick scraping, easily causes blurred vision, brings potential safety hazard to driving.
Summary of the invention
Comparatively large in order to overcome noise when existing wiper driver train works, and, connect and catch up with transmission device to be open type, comparatively large by external action, operationally easily cause rain shaving electrical machine to burn as run into barrier obstruction; The scraping blade of scraping blade under non-yielding prop of adhesive tape for wiper blade is difficult to the change adapting to windshield surface, water efficiency is scraped low in the process struck off, not easily quick scraping, the invention provides a kind of two scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wiper, it is a kind of complete fully enclosed structure, noise is low, and not by external environment influence; Adhesive tape for wiper blade can be fitted with windshield better, and can scraping rapidly.
The technical solution adopted for the present invention to solve the technical problems is: a kind of two scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wiper, comprise rain shaving electrical machine (36) and rain brush driver train (70) and rain brush (31), it is characterized in that: rain brush axle drive shaft (50) is divided into passive rain brush axle drive shaft (32) and active rain brush axle drive shaft (49), and coaxially connects with the passive oil cylinder gear wheel shaft (51) of ring gear tooth bar oscillating oil cylinder (34) and the actuating cylinder gear wheel shaft (52) of driving gear tooth bar oscillating oil cylinder (47) respectively; Hydraulic oil pipe (48) UNICOM is passed through and transmitting torque between ring gear tooth bar oscillating oil cylinder (34) and driving gear tooth bar oscillating oil cylinder (47); Driving gear tooth bar oscillating oil cylinder (47) is provided with a connecting rod driving mechanism for rocker arm (53), its structure is: the initiatively rocking arm (61) being provided with coaxial linkage in actuating cylinder axle (52) axial side, initiatively rocking arm (61) is connected with the motor rocking arm (60) of motor gear (63) coaxial linkage by connecting rod (62), motor gear (63) is meshed with worm screw (46), one end of worm screw (46) connects with rain shaving electrical machine axle (45), and connecting rod driving mechanism for rocker arm (53) is located in closed structure.Hydraulic oil pipe (48) is flexible tube.
Described rain brush (31), adhesive tape for wiper blade fixed card slot (2) is provided with on the top of adhesive tape for wiper blade (1), bottom is provided with scraping blade (6), form left flexible wall (4) and right flexible wall (5) in the both sides of the base plate (3) of described adhesive tape for wiper blade fixed card slot (2) respectively to downward-extension, this left and right flexible wall and the both sides of flexible wall base plate (13) being located at scraping blade (6) upper end cross the flexible wall supporting structure (7) of formation one hollow; Be respectively equipped with in the lower end of left flexible wall (4) and right flexible wall (5) and prolong the left scraping blade (10) and right scraping blade (11) that flexible wall supporting structure (7) axially be arranged in parallel.Scraping blade can adapt to the curved surface change of windshield better under the supporting of flexible wall supporting structure, and laminating makes to scrape cleanliness better increases, and two scraper structure is two times that general single scraping blade strikes off efficiency.
The wall thickness of left flexible wall (4) and right flexible wall (5) is by thick gradual change shape thinning gradually from the upper and lower side of wall to centre.The middle part outwardly convex of left flexible wall (4) and right flexible wall (5).This design has again good stability while making flexible wall supporting structure have good flexibility.
The upper end of left scraping blade (10) and right scraping blade (11) is respectively equipped with left scraping blade inverted trapezoidal supporting station (9) and right scraping blade inverted trapezoidal supporting station (8).The design of inverted trapezoidal supporting station prevents scraping blade from lodging, and rises and support and booster action, strengthens the toughness of scraping blade and have the effect preventing flexible wall supporting structure excessive deformation concurrently.
In flexible wall supporting structure (7), be provided with an inverted T-shaped flying shore (12), the upper end of this inverted T-shaped flying shore (12) connects with the middle part of base plate (3).Inverted T-shaped flying shore can be played a supporting role when the distortion of flexible wall supporting structure is excessive, prevents flexible wall supporting structure to be out of shape excessively.
The invention has the beneficial effects as follows the rain brush driver train flexible duct hydrostatic drive of wiper, transmitting torque is large, volume is little, response rapidly, due to flexible duct hydrostatic drive, little by structural limitations during installation, and be enclosed construction completely, during work, noise is low, is especially applicable to external environment condition complex structure and long-distance transmission, can adapts to different automobile types, and not by external action, avoid the drawback because outer barrie thing causes rain shaving electrical machine to burn, significantly reduce internal car noise, improve the traveling comfort of inside during vehicle operating; Scraping blade rains better with the application of a surface degree of windshield in the supporting of flexible supporting structure, two scraper structure is two times that general single scraping blade strikes off efficiency, thus improve rain shaving blade scrape cleanliness, Clear & Transparent gaze area can be provided to driver rapidly, provide sound assurance to safe driving.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is practical application schematic diagram of the present invention.
Fig. 2 is connecting rod driving mechanism for rocker arm figure of the present invention.
Fig. 3 is connecting rod swing hydraulic pressure rain brush driver train of the present invention.
Fig. 4 is driving gear tooth bar oscillating oil cylinder cutaway view of the present invention.
Fig. 5 is rain brush schematic diagram of the present invention.
Fig. 6 is adhesive tape for wiper blade cross sectional drawing of the present invention.
1. adhesive tape for wiper blades in figure, 2. adhesive tape for wiper blade fixed card slot, 3. adhesive tape for wiper blade draw-in groove base plate, 4. left flexible wall, 5. right flexible wall, 6. scraping blade, 7. flexible wall supporting structure, 8. right scraping blade inverted trapezoidal supporting station, 9. left scraping blade inverted trapezoidal supporting station, 10. left scraping blade, 11. right scraping blades, 12. inverted T-shaped flying shores, 13. flexible wall base plates, 31. rain brush, 32. passive rain brush axle drive shafts, 34. ring gear tooth bar oscillating oil cylinders, 36. rain shaving electrical machines, 37. passive oil cylinder gear 38. actuating cylinder gears, 45. rain shaving electrical machine axles, 46. worm screws, 47. driving gear tooth bar oscillating oil cylinders, 48. hydraulic oil pipes, 49. active rain brush axle drive shafts, 50. rain brush axle drive shafts, 51. passive oil cylinder gear wheel shafts, 52. actuating cylinder gear wheel shafts, 53. connecting rod driving mechanism for rocker arm, 57. passive oil cylinder tooth bars, 58. actuating cylinder tooth bars, 60. motor rocking arms, 61. initiatively rocking arms, 62. connecting rods, 63. motor gears, 64. motor gear axles, 70. rain brush driver trains.
Detailed description of the invention
In Fig. 1-Fig. 6 embodiment, a kind of two scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wiper, comprise rain shaving electrical machine (36) and rain brush driver train (70) and rain brush (31), it is characterized in that: rain brush axle drive shaft (50) is divided into passive rain brush axle drive shaft (32) and active rain brush axle drive shaft (49), and coaxially connects with the passive oil cylinder gear wheel shaft (51) of ring gear tooth bar oscillating oil cylinder (34) and the actuating cylinder gear wheel shaft (52) of driving gear tooth bar oscillating oil cylinder (47) respectively; Hydraulic oil pipe (48) UNICOM is passed through and transmitting torque between ring gear tooth bar oscillating oil cylinder (34) and driving gear tooth bar oscillating oil cylinder (47); Driving gear tooth bar oscillating oil cylinder (47) is provided with a connecting rod driving mechanism for rocker arm (53), its structure is: the initiatively rocking arm (61) being provided with coaxial linkage in actuating cylinder axle (52) axial side, initiatively rocking arm (61) is connected with the motor rocking arm (60) of motor gear (63) coaxial linkage by connecting rod (62), motor gear (63) is meshed with worm screw (46), one end of worm screw (46) connects with rain shaving electrical machine axle (45), and connecting rod driving mechanism for rocker arm (53) is located in closed structure.Hydraulic oil pipe (48) is flexible tube.
Described rain brush (31), adhesive tape for wiper blade fixed card slot (2) is provided with on the top of adhesive tape for wiper blade (1), bottom is provided with scraping blade (6), form left flexible wall (4) and right flexible wall (5) in the both sides of the base plate (3) of described adhesive tape for wiper blade fixed card slot (2) respectively to downward-extension, this left and right flexible wall and the both sides of flexible wall base plate (13) being located at scraping blade (6) upper end cross the flexible wall supporting structure (7) of formation one hollow; Be respectively equipped with in the lower end of left flexible wall (4) and right flexible wall (5) and prolong the left scraping blade (10) and right scraping blade (11) that flexible wall supporting structure (7) axially be arranged in parallel.The wall thickness of left flexible wall (4) and right flexible wall (5) is by thick gradual change shape thinning gradually from the upper and lower side of wall to centre.The middle part outwardly convex of left flexible wall (4) and right flexible wall (5).The upper end of left scraping blade (10) and right scraping blade (11) is respectively equipped with left scraping blade inverted trapezoidal supporting station (9) and right scraping blade inverted trapezoidal supporting station (8).In flexible wall supporting structure (7), be provided with an inverted T-shaped flying shore (12), the upper end of this inverted T-shaped flying shore (12) connects with the middle part of base plate (3).
Claims (6)
1. a two scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wiper, comprise rain shaving electrical machine (36) and rain brush driver train (70) and rain brush (31), it is characterized in that: rain brush axle drive shaft (50) is divided into passive rain brush axle drive shaft (32) and active rain brush axle drive shaft (49), and coaxially connects with the passive oil cylinder gear wheel shaft (51) of ring gear tooth bar oscillating oil cylinder (34) and the actuating cylinder gear wheel shaft (52) of driving gear tooth bar oscillating oil cylinder (47) respectively; Hydraulic oil pipe (48) UNICOM is passed through and transmitting torque between ring gear tooth bar oscillating oil cylinder (34) and driving gear tooth bar oscillating oil cylinder (47); Driving gear tooth bar oscillating oil cylinder (47) is provided with a connecting rod driving mechanism for rocker arm (53), its structure is: the initiatively rocking arm (61) being provided with coaxial linkage in actuating cylinder axle (52) axial side, initiatively rocking arm (61) is connected with the motor rocking arm (60) of motor gear (63) coaxial linkage by connecting rod (62), motor gear (63) is meshed with worm screw (46), one end of worm screw (46) connects with rain shaving electrical machine axle (45), and connecting rod driving mechanism for rocker arm (53) is located in closed structure;
Described rain brush (31), adhesive tape for wiper blade fixed card slot (2) is provided with on the top of adhesive tape for wiper blade (1), bottom is provided with scraping blade (6), form left flexible wall (4) and right flexible wall (5) in the both sides of the base plate (3) of described adhesive tape for wiper blade fixed card slot (2) respectively to downward-extension, this left and right flexible wall and the both sides of flexible wall base plate (13) being located at scraping blade (6) upper end cross the flexible wall supporting structure (7) of formation one hollow; Be respectively equipped with in the lower end of left flexible wall (4) and right flexible wall (5) and prolong the left scraping blade (10) and right scraping blade (11) that flexible wall supporting structure (7) axially be arranged in parallel.
2. according to claim 1 pair of scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wiper, is characterized in that: the wall thickness of left flexible wall (4) and right flexible wall (5) is by thick gradual change shape thinning gradually from the upper and lower side of wall to centre.
3. according to claim 2 pair of scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wiper, is characterized in that: the middle part outwardly convex of left flexible wall (4) and right flexible wall (5).
4. according to claim 1 pair of scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wiper, is characterized in that: the upper end of left scraping blade (10) and right scraping blade (11) and middle scraping blade (14) is respectively equipped with left scraping blade inverted trapezoidal supporting station (9) and right scraping blade inverted trapezoidal supporting station (8).
5. according to claim 1 pair of scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wiper, it is characterized in that: in flexible wall supporting structure (7), be provided with an inverted T-shaped flying shore (12), the upper end of this inverted T-shaped flying shore (12) connects with the middle part of base plate (3).
6. according to claim 1 pair of scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wiper, is characterized in that: hydraulic oil pipe (48) is flexible tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510021072.9A CN104554156B (en) | 2015-01-15 | 2015-01-15 | Two scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wipers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510021072.9A CN104554156B (en) | 2015-01-15 | 2015-01-15 | Two scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wipers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104554156A true CN104554156A (en) | 2015-04-29 |
| CN104554156B CN104554156B (en) | 2016-05-25 |
Family
ID=53071537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510021072.9A Active CN104554156B (en) | 2015-01-15 | 2015-01-15 | Two scraping blade flexible wall rain brush connecting rod swing hydraulic pressure wipers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104554156B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2736767A1 (en) * | 1977-08-16 | 1979-02-22 | Rudolf Ettelt | Hard wearing windscreen wiper blade assembly - has double edged blade with parallel operating tips |
| JPH08142804A (en) * | 1994-11-17 | 1996-06-04 | Delta:Kk | Wiper rubber |
| CN2608358Y (en) * | 2003-02-20 | 2004-03-31 | 昌河飞机工业（集团）有限责任公司 | Automobile rear wind shield glass wind shield wiper |
| CN101218133A (en) * | 2005-04-08 | 2008-07-09 | 标致·雪铁龙汽车公司 | Improved windshield wiping strip and a wiper blade provided with said wiping strip |
| CN203047187U (en) * | 2013-01-17 | 2013-07-10 | 昆明理工大学 | Windscreen wiper |
-
2015
- 2015-01-15 CN CN201510021072.9A patent/CN104554156B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2736767A1 (en) * | 1977-08-16 | 1979-02-22 | Rudolf Ettelt | Hard wearing windscreen wiper blade assembly - has double edged blade with parallel operating tips |
| JPH08142804A (en) * | 1994-11-17 | 1996-06-04 | Delta:Kk | Wiper rubber |
| CN2608358Y (en) * | 2003-02-20 | 2004-03-31 | 昌河飞机工业（集团）有限责任公司 | Automobile rear wind shield glass wind shield wiper |
| CN101218133A (en) * | 2005-04-08 | 2008-07-09 | 标致·雪铁龙汽车公司 | Improved windshield wiping strip and a wiper blade provided with said wiping strip |
| CN203047187U (en) * | 2013-01-17 | 2013-07-10 | 昆明理工大学 | Windscreen wiper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104554156B (en) | 2016-05-25 |
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Effective date of registration: 20181130 Address after: 214500 North Side of Xinzhou Road, East Side of Xinmin Road, South Side of Fuyang Road and West Side of Tongjiang Road, Binjiang New District, Taizhou City, Jiangsu Province Patentee after: Jingjiang Zhiyun Information Technology Co.,Ltd. Address before: 241001 16-1-502, Pingan villa, Wuhu, Anhui Patentee before: Chen Xueqin |
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Effective date of registration: 20230922 Address after: No. 810-2, No. 59-3 Changjiang Road, Yantai Development Zone, China (Shandong) Pilot Free Trade Zone, Yantai City, Shandong Province, 264000 Patentee after: Yantai Longwei Enterprise Management Consulting Co.,Ltd. Address before: 214500 North Side of Xinzhou Road, East Side of Xinmin Road, South Side of Fuyang Road and West Side of Tongjiang Road, Binjiang New District, Taizhou City, Jiangsu Province Patentee before: Jingjiang Zhiyun Information Technology Co.,Ltd. |
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Effective date of registration: 20231108 Address after: Room 302, No. 1, No. 3, No. 5 Yongjiang Sanzhi Road, Yantai Development Zone, Yantai Area, China (Shandong) Free Trade Pilot Zone, Yantai City, Shandong Province, 264006 Patentee after: Yantai Xinyun Chemical Co.,Ltd. Address before: No. 810-2, No. 59-3 Changjiang Road, Yantai Development Zone, China (Shandong) Pilot Free Trade Zone, Yantai City, Shandong Province, 264000 Patentee before: Yantai Longwei Enterprise Management Consulting Co.,Ltd. |