CN103453125A - Cooling and lubricating system for double clutch transmission - Google Patents
Cooling and lubricating system for double clutch transmission Download PDFInfo
- Publication number
- CN103453125A CN103453125A CN2013103939318A CN201310393931A CN103453125A CN 103453125 A CN103453125 A CN 103453125A CN 2013103939318 A CN2013103939318 A CN 2013103939318A CN 201310393931 A CN201310393931 A CN 201310393931A CN 103453125 A CN103453125 A CN 103453125A
- Authority
- CN
- China
- Prior art keywords
- clutch
- pressure regulation
- passage
- number shelves
- valve
- 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
Images
Landscapes
- General Details Of Gearings (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention discloses a cooling and lubricating system for a double clutch transmission, which relates to the technical field of automobile transmission systems and is designed for controlling the lubricating flow, saving energy consumption and increasing the cooling efficiency. The system comprises a first clutch lubricating channel and a second clutch lubricating channel, wherein the inlet ends of the two channels are connected with lubricating agent sources, and the outlet ends of the two channels are connected to a first clutch and a second clutch; slide valves are arranged in the two channels; when the first clutch and the second clutch slide relative to each other, both the first clutch lubricating channel and the second clutch lubricating channel are connected to the conduction ends of the slide valves; after the clutches are jointed or separated completely, one of the first clutch lubricating channel and the second clutch lubricating channel is connected to the conduction ends of the slide valves while the other is connected to the cut-off ends of the slide valves. The cooling and lubricating system for the double clutch transmission can be applied to the automobile transmission systems.
Description
Technical field
The present invention relates to the car transmissions technical field, relate in particular to a kind of dual-clutch transmission cooling and lubricating system.
Background technique
The cooling and lubrication of dual-clutch transmission is one of key technology important during dual-clutch transmission is designed and developed, and it is directly connected to the long-term safety of speed changer and uses and reliability.
The rear needed lubrication flow of joint is different in engaging process from fully for clutch, in engaging process, the clutch sliding wear produces a large amount of heats, so need a large amount of lubricant oil to take away heat, and heat yield reduces after engaging fully, required lubrication flow also can reduce.In addition, the odd even shelves clutch of double-clutch automatic gearbox is alternation, and for example, when odd number shelves clutch is worked, the corresponding odd number shelves of clutch gear is also worked therewith, need to be therefore odd number shelves gear supplying lubricating oil; Even number shelves clutch is not worked, and the corresponding even number shelves of clutch gear is not worked yet therewith, does not therefore need for even number shelves gear supplying lubricating oil.
In prior art cooling and lubricating system when work for clutch in the sliding wear state and engage fully or fully separated state do not distinguished, cause like this separating fully or still supplying with more lubrication flow after joint fully at clutch.
Above-mentioned lubricating system causes having supplied with too much lubrication flow for gear, has increased the towing moment of torsion, has increased energy consumption, and cooling effectiveness is low.
Summary of the invention
The object of the present invention is to provide a kind of dual-clutch transmission cooling and lubricating system, can control lubrication flow, save energy consumption, improve cooling effectiveness.
For achieving the above object, embodiments of the invention adopt following technological scheme:
A kind of dual-clutch transmission cooling and lubricating system comprises:
First clutch lubrication channel and second clutch lubrication channel, the entry end of these two passages all connects lubricant source, outlet end and all is connected to first clutch and second clutch, and is provided with guiding valve in these two passages;
When described first clutch and second clutch sliding wear, described first clutch lubrication channel and second clutch lubrication channel all are connected to the conduction terminal of described guiding valve; After clutch engages fully or separates fully, one in described first clutch lubrication channel and second clutch lubrication channel is connected to the conduction terminal of described guiding valve, the cut-off end that another is connected to described guiding valve.
Dual-clutch transmission cooling and lubricating system in technique scheme also comprises:
Odd number shelves gear lubrication passage, its entry end connects lubricant source, outlet end connects odd number shelves gear, and is provided with the first lubricated selector valve in described odd number shelves gear lubrication passage;
Even number shelves gear lubrication passage, its entry end connects lubricant source, outlet end connects even number shelves gear, and is provided with the second lubricated selector valve in described even number shelves gear lubrication passage;
When odd number shelves working gear, described odd number shelves gear lubrication passage is connected to the conduction terminal of the described first lubricated selector valve, and described even number shelves gear lubrication passage is connected to the cut-off end of the described second lubricated selector valve; When even number shelves working gear, described even number shelves gear lubrication passage is connected to the conduction terminal of the described second lubricated selector valve, and described odd number shelves gear lubrication passage is connected to the cut-off end of described the lubricated first lubricated selector valve.
Dual-clutch transmission cooling and lubricating system in technique scheme also comprises:
The first pressure regulation passage, its entry end connects lubricant source, outlet end connects odd number shelves clutch, and is provided with the first pressure regulation selector valve in described the first pressure regulation passage;
The second pressure regulation passage, its entry end connects lubricant source, outlet end connects even number shelves clutch, and is provided with the second pressure regulation selector valve in described the second pressure regulation passage; When odd number shelves clutch is worked, described the first pressure regulation passage is connected to the conduction terminal of described the first pressure regulation selector valve, and described the second pressure regulation passage is connected to the cut-off end of described pressure regulation the second pressure regulation selector valve; When even number shelves clutch is worked, described the second pressure regulation passage is connected to the conduction terminal of described the second pressure regulation selector valve, and described the first pressure regulation passage is connected to the cut-off end of described the first pressure regulation selector valve.
The oiling agent of described odd number shelves gear lubrication passage, even number shelves gear lubrication passage be pressure regulation by being flowed directly into by lubrication channel, described the first pressure regulation passage, the second pressure regulation passage are that direct descendant is in working connection.
The described first lubricated selector valve and described the first pressure regulation selector valve are same valve, and this valve is two eight logical valves; The described second lubricated selector valve and described the second pressure regulation selector valve are same valve, and this valve is two eight logical valves.
Described guiding valve is two-position four-way valve, and after clutch engages fully or separates fully, is connected in the clutch lubrication passage of conduction terminal of described guiding valve and is provided with restriction.
Perhaps, described guiding valve is three six-way valves, and, after clutch engages fully or separates fully, be connected in the clutch lubrication passage of conduction terminal of described guiding valve to be provided with restriction or to be connected in the clutch lubrication passage of cut-off end of described guiding valve and be provided with restriction.
The dual-clutch transmission cooling and lubricating system that embodiments of the invention provide, be provided with two clutch lubrication passages, by conducting or the cut-off of controlling two clutch lubrication passages, realize clutch sliding wear state and joint or lubricating respectively of separated state fully fully, as required for amount, thereby effectively saved lubrication flow, save energy consumption, improved cooling effectiveness.
The accompanying drawing explanation
The schematic diagram of the dual-clutch transmission cooling and lubricating system that Fig. 1 is the embodiment of the present invention;
The another kind of structural representation that Fig. 2 is guiding valve described in above-mentioned dual-clutch transmission cooling and lubricating system.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention dual-clutch transmission cooling and lubricating system is described in detail.
As shown in Figure 1, the invention provides a kind of dual-clutch transmission cooling and lubricating system, comprising:
First clutch lubrication channel and second clutch lubrication channel, the entry end of these two passages all connects lubricant source, outlet end and all is connected to first clutch and second clutch, and is provided with guiding valve in these two passages;
When described first clutch and second clutch sliding wear, described first clutch lubrication channel and second clutch lubrication channel all are connected to the conduction terminal of described guiding valve; After clutch engages fully or separates fully, one in described first clutch lubrication channel and second clutch lubrication channel is connected to the conduction terminal of described guiding valve, the cut-off end that another is connected to described guiding valve.
The dual-clutch transmission cooling and lubricating system that embodiments of the invention provide, be provided with two clutch lubrication passages, by conducting or the cut-off of controlling two clutch lubrication passages, realize clutch sliding wear state and joint or lubricating respectively of separated state fully fully, as required for amount, thereby effectively saved lubrication flow, save energy consumption, improved cooling effectiveness.
Further, as a kind of improvement to above-described embodiment, described dual-clutch transmission cooling and lubricating system also comprises:
Odd number shelves gear lubrication passage 13, its entry end connects lubricant source, outlet end connects odd number shelves gear, and is provided with the first lubricated selector valve in described odd number shelves gear lubrication passage 13;
Even number shelves gear lubrication passage 15, its entry end connects lubricant source, outlet end connects even number shelves gear, and is provided with the second lubricated selector valve in described even number shelves gear lubrication passage 15;
When odd number shelves working gear, described odd number shelves gear lubrication passage 13 is connected to the conduction terminal of the described first lubricated selector valve, and described even number shelves gear lubrication passage 15 is connected to the cut-off end of the described second lubricated selector valve; When even number shelves working gear, described even number shelves gear lubrication passage 15 is connected to the conduction terminal of the described second lubricated selector valve, and described odd number shelves gear lubrication passage 13 is connected to the cut-off end of described the lubricated first lubricated selector valve.
Be provided with odd number shelves gear lubrication passage 13 and even number shelves gear lubrication passage 15, and be provided with selector valve in passage separately, when odd number shelves working gear, 13 conductings of described odd number shelves gear lubrication passage, described even number shelves gear lubrication passage 15 cut-offs, when even number shelves working gear, 15 conductings of even number shelves gear lubrication passage, 13 cut-offs of odd number shelves gear lubrication passage, like this, only in running order gear is lubricated, thereby has effectively saved lubrication flow, save energy consumption, improved cooling effectiveness.
Again further, as a kind of improvement to above-described embodiment, described dual-clutch transmission cooling and lubricating system also comprises:
The first pressure regulation passage 14, its entry end connects lubricant source, outlet end connects odd number shelves clutch, and is provided with the first pressure regulation selector valve in described the first pressure regulation passage 14;
The second pressure regulation passage 16, its entry end connects lubricant source, outlet end connects even number shelves clutch, and is provided with the second pressure regulation selector valve in described the second pressure regulation passage 16;
When odd number shelves clutch is worked, described the first pressure regulation passage 14 is connected to the conduction terminal of described the first pressure regulation selector valve, and described the second pressure regulation passage 16 is connected to the cut-off end of described pressure regulation the second pressure regulation selector valve; When even number shelves clutch is worked, described the second pressure regulation passage 16 is connected to the conduction terminal of described the second pressure regulation selector valve, and described the first pressure regulation passage 14 is connected to the cut-off end of described the first pressure regulation selector valve.
The mode that odd number shelves, even number shelves clutch are alternation, both can only have one in running order simultaneously.And, when having external force to impose on clutch, clutch can engage, when without external force, imposing on clutch, clutch can separate automatically.When odd number shelves clutch is worked, the first pressure regulation passage 14 conductings, oiling agent flows, and now hydraulic system produces power, and this powered odd number shelves clutch engages, and enters working state.Now the second pressure regulation passage 16 cut-offs, remove to promote even number shelves clutch without hydraulic power, so even number shelves clutch separation, the state of deactivating.Situation when even number shelves clutch is worked is just in time contrary.So just can realize the joint of clutch or the adjusting of separation.
Particularly, the oiling agent towards described odd number shelves, even number shelves gear lubrication passage 13,15 is that pressure regulation is by being flowed directly into by lubrication channel 8 and 11.Described first, second pressure regulation passage 14,16 is that direct descendant is in working connection 7.Oiling agent enters lubrication channel 8 after main pressure regulator valve 1 pressure regulation, lubrication channel 8 branches into first clutch lubrication channel 9, second clutch lubrication channel 10 and lubrication channel 11, and lubrication channel 11 branches into odd number shelves gear lubrication passage 13 and even number shelves gear lubrication passage 15 again.Here main pressure regulator valve 1 is controlled by solenoid valve 3.The first pressure regulation passage 14 and the second pressure regulation passage 16 are for to be flowed directly into by working connection 7.
Preferably, the described first lubricated selector valve and described the first pressure regulation selector valve are same valve, are the valve 5 shown in Fig. 1, and this valve is two eight logical valves; The described second lubricated selector valve and described the second pressure regulation selector valve are same valve, are the valve 6 shown in Fig. 1, and this valve is two eight logical valves.Can reduce the quantity of valve like this, be conducive to the simplification of structure, be convenient to manufacture and later maintenance.
Particularly, described guiding valve 2 is two-position four-way valve (as shown in Figure 1), and after clutch engages fully or separates fully, is connected in the clutch lubrication passage of conduction terminal of described guiding valve 2 and is provided with restriction 23.Guiding valve 2 can be controlled by solenoid valve 4 its action, and solenoid valve 4 is connected with working connection 7 by passage 12.So-called two, guiding valve 2 has two gears.For example, under the state shown in Fig. 1, when guiding valve 2 during in the right side gear, the equal conducting of two-way clutch lubrication passage, when guiding valve 2 during in the left side gear, two-way clutch lubrication passage Zhong mono-tunnel conducting, another road cut-off, and a road of conducting is for being provided with restriction 23 mono-tunnel, restriction 23 can guarantee in the situation that, after clutch engages fully and another clutch separates fully, clutch can keep suitable lubrication flow.
Under another kind of concrete condition, described guiding valve 2 is three six-way valves (as shown in Figure 2), and, after clutch engages fully or separates fully, be connected in the clutch lubrication passage of conduction terminal of described guiding valve 2 to be provided with restriction 23 or to be connected in the clutch lubrication passage of cut-off end of described guiding valve 2 and be provided with restriction 23.So-called three, guiding valve 2 has three gears.For example, under state shown in Fig. 2, when guiding valve 2, in left when position, be provided with the lubrication channel conducting of restriction 23, another lubrication channel cut-off, now flow minimum; During in meta, be provided with the lubrication channel cut-off of restriction 23 when guiding valve 2, another lubrication channel conducting, now flow is moderate; When guiding valve 2 in right when position, the equal conducting of two-way lubrication channel, now flow maximum.Can provide for the adjusting of the lubrication flow of clutch many a kind of selections like this.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in 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 dual-clutch transmission cooling and lubricating system, is characterized in that, comprising:
First clutch lubrication channel and second clutch lubrication channel, the entry end of these two passages all connects lubricant source, outlet end and all is connected to first clutch and second clutch, and is provided with guiding valve in these two passages;
When described first clutch and second clutch sliding wear, described first clutch lubrication channel and second clutch lubrication channel all are connected to the conduction terminal of described guiding valve; After clutch engages fully or separates fully, one in described first clutch lubrication channel and second clutch lubrication channel is connected to the conduction terminal of described guiding valve, the cut-off end that another is connected to described guiding valve.
2. dual-clutch transmission cooling and lubricating system according to claim 1, is characterized in that, also comprises:
Odd number shelves gear lubrication passage, its entry end connects lubricant source, outlet end connects odd number shelves gear, and is provided with the first lubricated selector valve in described odd number shelves gear lubrication passage;
Even number shelves gear lubrication passage, its entry end connects lubricant source, outlet end connects even number shelves gear, and is provided with the second lubricated selector valve in described even number shelves gear lubrication passage;
When odd number shelves working gear, described odd number shelves gear lubrication passage is connected to the conduction terminal of the described first lubricated selector valve, and described even number shelves gear lubrication passage is connected to the cut-off end of the described second lubricated selector valve; When even number shelves working gear, described even number shelves gear lubrication passage is connected to the conduction terminal of the described second lubricated selector valve, and described odd number shelves gear lubrication passage is connected to the cut-off end of the described first lubricated selector valve.
3. dual-clutch transmission cooling and lubricating system according to claim 2, is characterized in that, also comprises:
The first pressure regulation passage, its entry end connects lubricant source, outlet end connects odd number shelves clutch, and is provided with the first pressure regulation selector valve in described the first pressure regulation passage;
The second pressure regulation passage, its entry end connects lubricant source, outlet end connects even number shelves clutch, and is provided with the second pressure regulation selector valve in described the second pressure regulation passage;
When odd number shelves clutch is worked, described the first pressure regulation passage is connected to the conduction terminal of described the first pressure regulation selector valve, and described the second pressure regulation passage is connected to the cut-off end of described the second pressure regulation selector valve; When even number shelves clutch is worked, described the second pressure regulation passage is connected to the conduction terminal of described the second pressure regulation selector valve, and described the first pressure regulation passage is connected to the cut-off end of described the first pressure regulation selector valve.
4. according to the described dual-clutch transmission cooling and lubricating system of claim 2 or 3, it is characterized in that, the oiling agent of described odd number shelves gear lubrication passage, even number shelves gear lubrication passage be pressure regulation by being flowed directly into by lubrication channel, described the first pressure regulation passage, the second pressure regulation passage are that direct descendant is in working connection.
5. dual-clutch transmission cooling and lubricating system according to claim 3, is characterized in that,
The described first lubricated selector valve and described the first pressure regulation selector valve are same valve, and this valve is two eight logical valves;
The described second lubricated selector valve and described the second pressure regulation selector valve are same valve, and this valve is two eight logical valves.
6. dual-clutch transmission cooling and lubricating system according to claim 1, it is characterized in that, described guiding valve is two-position four-way valve, and after clutch engages fully or separates fully, is connected in the clutch lubrication passage of conduction terminal of described guiding valve and is provided with restriction.
7. dual-clutch transmission cooling and lubricating system according to claim 1, it is characterized in that, described guiding valve is three six-way valves, and, after clutch engages fully or separates fully, be connected in the clutch lubrication passage of conduction terminal of described guiding valve to be provided with restriction or to be connected in the clutch lubrication passage of cut-off end of described guiding valve and be provided with restriction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310393931.8A CN103453125B (en) | 2013-08-30 | 2013-08-30 | A kind of dual-clutch transmission cooling and lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310393931.8A CN103453125B (en) | 2013-08-30 | 2013-08-30 | A kind of dual-clutch transmission cooling and lubricating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103453125A true CN103453125A (en) | 2013-12-18 |
| CN103453125B CN103453125B (en) | 2016-06-29 |
Family
ID=49735821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310393931.8A Active CN103453125B (en) | 2013-08-30 | 2013-08-30 | A kind of dual-clutch transmission cooling and lubricating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103453125B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529584A (en) * | 2018-05-23 | 2019-12-03 | 广州汽车集团股份有限公司 | Power system cooling device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060054442A1 (en) * | 2004-09-16 | 2006-03-16 | Andreas Hegerath | Hydraulic system providing pressure and volume flows in a double-clutch transmission |
| CN101709776A (en) * | 2009-12-10 | 2010-05-19 | 重庆青山工业有限责任公司 | Cooling control system of dual-clutch gearbox |
| EP2324269A2 (en) * | 2008-09-09 | 2011-05-25 | Volkswagen Aktiengesellschaft | Method and hydraulic circuit for the hydraulic control of a motor vehicle transmission, particularly an automatic or automatized motor vehicle transmission |
| CN102168754A (en) * | 2011-04-08 | 2011-08-31 | 浙江万里扬变速器股份有限公司 | Hydraulic control system for wet-type double-clutch automatic transmission |
| CN102606719A (en) * | 2012-03-09 | 2012-07-25 | 重庆青山工业有限责任公司 | Cooling loop system of dual-clutch gearbox |
| CN202431941U (en) * | 2012-01-04 | 2012-09-12 | 安徽江淮汽车股份有限公司 | Forced cooling lubrication system used in double clutch automatic gearbox |
-
2013
- 2013-08-30 CN CN201310393931.8A patent/CN103453125B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060054442A1 (en) * | 2004-09-16 | 2006-03-16 | Andreas Hegerath | Hydraulic system providing pressure and volume flows in a double-clutch transmission |
| EP2324269A2 (en) * | 2008-09-09 | 2011-05-25 | Volkswagen Aktiengesellschaft | Method and hydraulic circuit for the hydraulic control of a motor vehicle transmission, particularly an automatic or automatized motor vehicle transmission |
| CN101709776A (en) * | 2009-12-10 | 2010-05-19 | 重庆青山工业有限责任公司 | Cooling control system of dual-clutch gearbox |
| CN102168754A (en) * | 2011-04-08 | 2011-08-31 | 浙江万里扬变速器股份有限公司 | Hydraulic control system for wet-type double-clutch automatic transmission |
| CN202431941U (en) * | 2012-01-04 | 2012-09-12 | 安徽江淮汽车股份有限公司 | Forced cooling lubrication system used in double clutch automatic gearbox |
| CN102606719A (en) * | 2012-03-09 | 2012-07-25 | 重庆青山工业有限责任公司 | Cooling loop system of dual-clutch gearbox |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529584A (en) * | 2018-05-23 | 2019-12-03 | 广州汽车集团股份有限公司 | Power system cooling device |
| CN110529584B (en) * | 2018-05-23 | 2021-02-05 | 广州汽车集团股份有限公司 | Power system cooling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103453125B (en) | 2016-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3845778B1 (en) | Hydraulic control system and vehicle | |
| CN207621329U (en) | A kind of hydraulic control system of double-clutch speed changer | |
| CN201992053U (en) | Twin-clutch automatic transmission hydraulic system with cooling, lubricating and flow regulating mechanism | |
| CN102168754B (en) | Hydraulic control system for wet-type double-clutch automatic transmission | |
| CN106233044B (en) | Gear arrangement with hydraulic system | |
| CN109139895A (en) | A kind of double pump fuel feeding and lubricating and cooling system | |
| CN205013672U (en) | Hydraulic control system and car of clutch gearbox | |
| CN107044540B (en) | Gear box hydraulic control system | |
| CN101709776B (en) | Cooling control system of dual-clutch gearbox | |
| DE102011120392B4 (en) | Method for controlling a dual clutch of a dual clutch transmission | |
| CN107303856B (en) | Power system and vehicle | |
| CN102062208B (en) | Hydraulic control device with double clutches | |
| CN110167780A (en) | The hydraulic clutch actuating system to oil with on-demand clutch | |
| CN112594372B (en) | Hydraulic system of automobile hybrid power transmission | |
| CN105626844A (en) | Hydraulic control system of wet type double-clutch speed changing box | |
| CN203189697U (en) | Control loop of double clutch automatic gearbox forced cooling and lubrication | |
| DE102011102807A1 (en) | CONTROL SYSTEM FOR A WET DOUBLE CLUTCH GEAR | |
| CN102230534A (en) | Hydraulic control system for double-clutch automatic gearbox | |
| CN201973228U (en) | Hydraulic control system used for automatic double-clutch transmission | |
| CN201992052U (en) | Double-clutch control device for double-clutch automatic gearbox | |
| CN106321805A (en) | A hydraulic control system of a wet-type double-clutch gearbox, a gearbox, a TCU and an automobile | |
| CN107035849A (en) | Gearbox lubrication cooling system and gearbox | |
| CN103453125A (en) | Cooling and lubricating system for double clutch transmission | |
| CN102606719B (en) | Cooling loop system of dual-clutch gearbox | |
| CN100451402C (en) | Hydraulic control system of three freedom degree six speed planetary transmission used for vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191113 Address after: 071000 No.75, Dongsheng Road, Lianchi District, Baoding City, Hebei Province Patentee after: Beehive transmission technology Hebei Co., Ltd Address before: 071000 No. 2266 Chaoyang South Street, Hebei, Baoding Patentee before: Changcheng Automobile Co., Ltd. |