CN206908464U - A kind of water-cooling motor structure - Google Patents
A kind of water-cooling motor structure Download PDFInfo
- Publication number
- CN206908464U CN206908464U CN201720424392.3U CN201720424392U CN206908464U CN 206908464 U CN206908464 U CN 206908464U CN 201720424392 U CN201720424392 U CN 201720424392U CN 206908464 U CN206908464 U CN 206908464U
- Authority
- CN
- China
- Prior art keywords
- motor
- water
- inner sleeve
- cooling
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The utility model provides a kind of water-cooling motor structure applied to motor component field,The motor inner sleeve (2) of described water-cooling motor structure is sleeved in motor outer (1),Motor inner sleeve (2) outer surface is fitted and connected with motor outer (1) inner surface,Motor inner sleeve (2) outer surface sets water channel groove (3),Water channel groove (3) is arranged to the structure along the one week arrangement in motor inner sleeve (2) outer surface,Water inlet pipe (4) and outlet pipe (5) are set in motor outer (1),Water inlet pipe (4) connects through motor outer (1) with water channel groove (3),Outlet pipe (5) connects through motor outer (1) with water channel groove (3),Water-cooling motor structure described in the utility model,Cooling water channel can easily and reliably be formed,Ensure that cooling effect is reliable in the motor course of work,Ensure water-cooled machine processing technology simple and fast simultaneously,Water-cooled machine suitable for producing thin-wall construction,Reduced during processing so as to cooling water channel processing cost.
Description
Technical field
The utility model belongs to motor component field, is to be related to a kind of water-cooling motor structure more specifically.
Background technology
In the prior art, water-cooled machine needs cooling fluid being sealed in the water channel of motor case, water common at present
Cool electric machine casing has monoblock type and split type two kinds.Monoblock type casing is fabricated using die casting mode, and die cost is higher, mould
Lamps structure is complicated, and the water channel shaping of casing needs later stage repair welding to complete sealing, and airtight quality is not easy to ensure, while die casting mode system
The chassis size made is thicker.Casing is divided into upper head plate, bottom plate and cylinder by split type casing, and water channel is arranged in cylinder, then
Water channel is realized by miscellaneous part and sealed, and upper head plate, bottom plate and cylinder are fixed together, causes casing production technology
Complexity, parts increase.
Utility model content
Technical problem to be solved in the utility model is:In view of the shortcomings of the prior art, there is provided it is a kind of simple in construction, into
This is low, easily and reliably can form water channel in the motor inner sleeve and motor outer of motor, it is ensured that cold in the motor course of work
But effect is reliable, to the cooling fluid sealed reliable such as cooling water in water channel, while ensures that water-cooled machine processing technology is simply fast
Victory, suitable for producing thin-walled water-cooled machine, so as to reduce cost, improve water-cooled machine cooling performance and water-cooled machine reliable operation
The water-cooling motor structure of property and service life.
Solves the problems, such as techniques discussed above, the technical scheme that the utility model is taken is:
The utility model is a kind of water-cooling motor structure, and described water-cooling motor structure includes motor outer, motor inner sleeve,
Described motor inner sleeve is sleeved in motor outer, and motor lining the outer surface of is fitted and connected with motor outer inner surface, in motor
Cover outer surface and water channel groove is set, water channel groove is arranged to the structure arranged along motor lining the outer surface of one week, in motor outer
Water inlet pipe and outlet pipe, water inlet pipe is set to be connected through motor outer with water channel groove, outlet pipe passes through motor outer and water channel
Groove connects.
Described motor lining the outer surface of sets boss portion, and boss portion is arranged to what is arranged within one week along motor lining the outer surface of
Structure, when described motor inner sleeve is sleeved in motor outer, the overcoat side surface of motor outer is configured to be resisted against electricity
The structure of the boss portion side surface of machine inner sleeve.
Multiple through holes are set in described boss portion, set quantity and position and through hole one-to-one on inner sleeve side surface
Bolt hole, when described motor inner sleeve is sleeved in motor outer, each connecting bolt be configured to through through hole with
One bolt hole is screwed the structure of connection.
The boss portion of described motor inner sleeve and the inner sleeve side surface of motor outer are connected by welding or riveting method.
Described motor lining the outer surface of sets two seals groove, and per pass sealed groove is disposed as along outside motor inner sleeve
The structure of the one week arrangement in surface, water channel groove are arranged to the knot of the motor lining the outer surface of position between two seals groove
Structure, per pass sealed groove one sealing ring of interior setting-in.
The sealing ring of setting-in is arranged to protrude from the structure of sealed groove, sealing ring upper table in described per pass sealed groove
Face is higher than motor lining the outer surface of, when motor inner sleeve is sleeved in motor outer, each sealing ring upper surface be configured to
Lean against the structure of motor outer inner surface.
Described motor lining the outer surface of sets multiple tracks water channel groove, and multiple tracks water channel groove is interconnected, described sealing
Groove includes left sealed groove and right sealed groove, and water inlet pipe water channel groove together with close to left sealed groove connects, water outlet
Pipe water channel groove together with close to right sealed groove connects, and sealing ring is arranged to the structure being made by elastomeric material.
When described motor inner sleeve is sleeved in motor outer, motor outer inner surface setting is inlaid in a left side for that can extrude
Sealing ring in sealed groove is in the structure of deformation state, and motor outer inner surface setting is inlaid in right sealing for that can extrude
Sealing ring in groove is in the structure of deformation state.
Described sealing ring is arranged to the structure that elastomeric material is made.
Using the technical solution of the utility model, following beneficial effect can be obtained:
Water-cooling motor structure described in the utility model, the casing of water-cooling motor structure is by motor outer and motor inner sleeve set
Dress is combined, and motor inner sleeve is sleeved in motor outer, and motor lining the outer surface of set water channel groove, motor inner sleeve with
After motor outer connection, water channel groove and motor outer inner surface formation cooling water channel, and cooling water channel and water inlet pipe and water outlet
Pipe connects, and so, the cooling water source outside casing can supply recirculated cooling water into the cooling water channel of motor, by motor
The water channel groove and motor outer inner surface for covering outer surface form cooling water channel, it is only necessary to water outlet is pre-machined on set in motor
Road groove, then by motor outer and motor inner sleeve combined set, just forms easy to process quick, and cost is low, good seal performance
Cooling water channel, it is ensured that cooling performance is reliable when water-cooling motor structure works, so that it is guaranteed that water-cooled machine is all the time satisfactory
Worked under temperature environment, it is ensured that water-cooling motor structure service life extends.Water-cooling motor structure described in the utility model, structure
Simply, cost is low, easily and reliably can form cooling water channel in the motor inner sleeve and motor outer of motor, it is ensured that motor work
Cooling effect is reliable during work, to the cooling fluid sealed reliable such as cooling water in water channel, while ensures that water-cooled machine is processed
Technique simple and fast, the water-cooled machine suitable for producing thin-wall construction, only need during processing to process water in motor lining the outer surface of
Road groove, reduce so as to cooling water channel processing cost, effectively improve water-cooled machine cooling performance and water-cooled machine functional reliability
And service life.
Brief description of the drawings
Brief description is made to the content expressed by each accompanying drawing of this specification and the mark in figure below:
Fig. 1 is the external structure schematic diagram of water-cooling motor structure described in the utility model;
Fig. 2 is the internal structure schematic diagram of water-cooling motor structure described in the utility model;
Accompanying drawing acceptance of the bid note be respectively:1st, motor outer;2nd, motor inner sleeve;3rd, water channel groove;4th, water inlet pipe;5th, outlet pipe;
6th, boss portion;7th, overcoat side surface;8th, through hole;9th, bolt hole;10th, connecting bolt;11st, sealed groove;12nd, sealing ring;13rd, it is left
Sealed groove;14th, right sealed groove.
Embodiment
Below against accompanying drawing, by the description to embodiment, to specific embodiment of the present utility model as involved
Mutual alignment and annexation, the effect of each several part and operation principle between the shape of each component, construction, each several part etc. make into
The detailed description of one step:
As shown in accompanying drawing 1, accompanying drawing 2, the utility model is a kind of water-cooling motor structure, and described water-cooling motor structure includes
Motor outer 1, motor inner sleeve 2, described motor inner sleeve 2 are sleeved in motor outer 1, outside the outer surface of motor inner sleeve 2 and motor
Cover 1 inner surface to be fitted and connected, the outer surface of motor inner sleeve 2 sets water channel groove 3, and water channel groove 3 is arranged to along the appearance of motor inner sleeve 2
The structure of the arrangement of face one week, sets water inlet pipe 4 and outlet pipe 5 in motor outer 1, and water inlet pipe 4 is recessed through motor outer 1 and water channel
Groove 3 connects, and outlet pipe 5 connects through motor outer 1 with water channel groove 3.Said structure, the casing of water-cooling motor structure is by electricity
Machine overcoat and motor inner sleeve combined set are formed, and motor inner sleeve 2 is sleeved in motor outer 1, and is set in motor lining the outer surface of
Water channel groove is put, after motor inner sleeve is connected with motor outer, water channel groove forms cooling water channel with motor outer inner surface, and cold
But water channel connects with water inlet pipe and outlet pipe, and so, the cooling water source outside casing can supply into the cooling water channel of motor
Recirculated cooling water, cooling water channel is formed by the water channel groove and motor outer inner surface of motor lining the outer surface of, it is only necessary to
Put in motor and water outlet groove is pre-machined, then by motor outer and motor inner sleeve combined set, just formed easy to process fast
Victory, cost is low, the cooling water channel of good seal performance, it is ensured that cooling performance is reliable when water-cooling motor structure works, so that it is guaranteed that water
Cool electric machine works under satisfactory temperature environment all the time, it is ensured that water-cooling motor structure service life extends.The utility model
Described water-cooling motor structure, simple in construction, cost is low, can be easily and reliably in the motor inner sleeve and motor outer of motor
Form cooling water channel, it is ensured that cooling effect is reliable in the motor course of work, can to the sealing of the cooling fluids such as the cooling water in water channel
Lean on, while ensure water-cooled machine processing technology simple and fast, suitable for producing thin-walled water-cooled machine, it is only necessary to outside motor inner sleeve
Surface Machining water outlet groove, so as to reduce cooling water channel processing cost, effectively improve water-cooled machine cooling performance and water cooling electricity
Machine functional reliability and service life.
The described outer surface of motor inner sleeve 2 sets boss portion 6, and boss portion 6 is arranged to along 2 outer surface of motor inner sleeve, one week cloth
The structure put, when described motor inner sleeve 2 is sleeved in motor outer 1, the overcoat side surface 7 of motor outer 1 is configured to
It is resisted against the structure of the side surface of boss portion 6 of motor inner sleeve 2.Said structure, by the setting of boss portion and inner sleeve side surface, when
When motor inner sleeve connects with motor outer suit, the overcoat medial surface of motor outer is resisted against the boss portion side surface of motor inner sleeve
On, so, both realized the positioning and fixation of relative position between motor outer and motor inner sleeve, it is ensured that motor outer and motor
Inner sleeve connection is reliable, so as to which relative slide will not occur, it is ensured that water-cooling motor structure resistance to overturning and connection reliability.
Multiple through holes 8 are set in described boss portion 6, quantity and position and through hole 8 are set one by one on inner sleeve side surface 7
Corresponding bolt hole 9, when described motor inner sleeve 2 is sleeved in motor outer 1, each connecting bolt 10 be configured to through
One through hole 8 is screwed the structure being connected with a bolt hole 9.Said structure, when motor inner sleeve and motor outer suit connection,
Each connecting bolt is screwed through a through hole with a bolt hole to be connected, and so, realizes motor inner sleeve and motor outer
It is fixedly connected, has both ensured that motor inner sleeve is fixed with motor outer position, avoids motor inner sleeve to occur mutually to slide with motor outer again
Or rotate, connection is reliable.
In structure of the present utility model, the another embodiment that is connected as motor inner sleeve with motor outer is described
The boss portion 6 of motor inner sleeve 2 is connected with the inner sleeve side surface 7 of motor outer 1 by welding or riveting method, so, is realized
Motor inner sleeve is fixedly connected with motor outer, has both been ensured that motor inner sleeve is fixed with motor outer position, has been avoided motor inner sleeve again
Occur mutually to slide or rotate with motor outer, connection is reliable.
The described outer surface of motor inner sleeve 2 sets two seals groove 11, and per pass sealed groove 11 is disposed as along motor
The structure of 2 outer surface of inner sleeve, one week arrangement, water channel groove 3 are arranged to outside the motor inner sleeve 2 between two seals groove 11
The structure of surface location, one sealing ring 12 of interior setting-in of per pass sealed groove 11.Said structure, pass through setting for two seals groove
Put, when motor inner sleeve and motor outer suit connection, the sealing ring in per pass sealed groove extrudes with motor outer inner surface
Contact, reliable sealing is realized, so that it is guaranteed that the cooling water in water channel groove will not ooze out sealing ring position, it is ensured that water channel groove with
The sealing for the cooling water channel that motor outer inner surface is formed, the water-cooling motor structure course of work is stable and reliable for performance, and raising makes
Use the life-span.
The sealing ring 12 of setting-in is arranged to protrude from the structure of sealed groove 11, sealing in described per pass sealed groove 11
Enclose 12 upper surfaces and be higher than the outer surface of motor inner sleeve 2, when motor inner sleeve 2 is sleeved in motor outer 1, each upper surface of sealing ring 12
It is configured to be resisted against the structure of the inner surface of motor outer 1.Said structure, when motor outer is connected with motor inner sleeve, electricity
Machine overcoat inner surface can exert a force on sealing ring so that sealing ring compressive deformation, it is ensured that sealing ring can reliably realize sealing work(
Can, when having cooling water circulation in cooling water channel, cooling water will not be between sealed groove, sealing ring and motor outer inner surface
Gap ooze out.
The described outer surface of motor inner sleeve 2 sets multiple tracks water channel groove 3, and multiple tracks water channel groove 3 is interconnected, and described is close
Envelope groove 11 includes left sealed groove 13 and right sealed groove 14, and the water channel together with close to left sealed groove 13 of water inlet pipe 4 is recessed
Groove 11 is connected, and the water channel groove 11 together with close to right sealed groove 14 of outlet pipe 5 is connected, and sealing ring 12 is arranged to by elastic material
Expect the structure being made.Said structure, intake by water inlet pipe into cooling water channel, and the water in cooling water channel is from outlet pipe
Discharge, form cooling water circulation.The sealing ring that elastomeric material makes, can deform in installing and using, effectively improve close
Sealing property.
When described motor inner sleeve 2 is sleeved in motor outer 1, the inner surface setting of motor outer 1 is that can extrude setting-in
Sealing ring 12 in left sealed groove 13 is in the structure of deformation state, and the inner surface setting of motor outer 1 is embedding for that can extrude
Sealing ring 12 in right sealed groove 14 is in the structure of deformation state.
Water-cooling motor structure described in the utility model, motor outer are easy to connect reliable with motor inner sleeve, it is only necessary to first
A sealing ring is set with each sealed groove, then motor inner sleeve is sleeved in motor outer, then pass through connecting bolt
It is connected through through hole with screwed hole, is achieved that being reliably connected for motor outer and motor inner sleeve, assembling is simple, improves assembling
Efficiency.At the same time, water-cooling motor structure described in the utility model, motor inner sleeve coordinates with motor outer to be installed, and is suitable for
The water-cooling motor structure of thin-walled casing is produced, it is applied widely.And sealing ring after motor inner sleeve is connected with motor outer i.e.
Sealing function can be played, and ensures that sealing ring is always positioned in sealed groove, is not in slip or play, effectively ensures close
Seal effect.
Described sealing ring is arranged to the structure that elastomeric material is made.
Water-cooling motor structure described in the utility model, the casing of water-cooling motor structure is by motor outer and motor inner sleeve set
Dress is combined, and motor inner sleeve is sleeved in motor outer, and motor lining the outer surface of set water channel groove, motor inner sleeve with
After motor outer connection, water channel groove and motor outer inner surface formation cooling water channel, and cooling water channel and water inlet pipe and water outlet
Pipe connects, and so, the cooling water source outside casing can supply recirculated cooling water into the cooling water channel of motor, by motor
The water channel groove and motor outer inner surface for covering outer surface form cooling water channel, it is only necessary to water outlet is pre-machined on set in motor
Road groove, then by motor outer and motor inner sleeve combined set, just forms easy to process quick, and cost is low, good seal performance
Cooling water channel, it is ensured that cooling performance is reliable when water-cooling motor structure works, so that it is guaranteed that water-cooled machine is all the time satisfactory
Worked under temperature environment, it is ensured that water-cooling motor structure service life extends.Water-cooling motor structure described in the utility model, structure
Simply, cost is low, easily and reliably can form cooling water channel in the motor inner sleeve and motor outer of motor, it is ensured that motor work
Cooling effect is reliable during work, to the cooling fluid sealed reliable such as cooling water in water channel, while ensures that water-cooled machine is processed
Technique simple and fast, the water-cooled machine suitable for producing thin-wall construction, only need during processing to process water in motor lining the outer surface of
Road groove, reduce so as to cooling water channel processing cost, effectively improve water-cooled machine cooling performance and water-cooled machine functional reliability
And service life.
Exemplary description is carried out to the utility model above in conjunction with accompanying drawing, it is clear that the utility model concrete implementation is simultaneously
Do not limited by aforesaid way, if the various improvement that methodology and technical scheme of the present utility model are carried out are employed, or
It is not improved that design of the present utility model and technical scheme are directly applied into other occasions, in protection of the present utility model
In the range of.
Claims (9)
1. a kind of water-cooling motor structure, described water-cooling motor structure includes motor outer (1), motor inner sleeve (2), and its feature exists
In:Described motor inner sleeve (2) is sleeved in motor outer (1), motor inner sleeve (2) outer surface and motor outer (1) inner surface
It is fitted and connected, motor inner sleeve (2) outer surface sets water channel groove (3), and water channel groove (3) is arranged to along motor inner sleeve (2) appearance
The structure of the arrangement of face one week, water inlet pipe (4) and outlet pipe (5), water inlet pipe (4) is set to pass through motor outer in motor outer (1)
(1) connected with water channel groove (3), outlet pipe (5) connects through motor outer (1) with water channel groove (3).
2. water-cooling motor structure according to claim 1, it is characterised in that:Described motor inner sleeve (2) outer surface is set
Boss portion (6), boss portion (6) are arranged to the structure along the one week arrangement in motor inner sleeve (2) outer surface, described motor inner sleeve (2)
Be sleeved on motor outer (1) it is interior when, the overcoat side surface (7) of motor outer (1) is configured to be resisted against motor inner sleeve (2)
The structure of boss portion (6) side surface.
3. water-cooling motor structure according to claim 2, it is characterised in that:Set in described boss portion (6) multiple logical
Hole (8), sets quantity and position and the one-to-one bolt hole (9) of through hole (8) on inner sleeve side surface (7), in described motor
Set (2) be sleeved on motor outer (1) it is interior when, each connecting bolt (10) is configured to through through hole (8) and a spiral shell
Keyhole (9) is screwed the structure of connection.
4. water-cooling motor structure according to claim 2, it is characterised in that:The boss portion (6) of described motor inner sleeve (2)
It is connected with the inner sleeve side surface (7) of motor outer (1) by welding or riveting method.
5. water-cooling motor structure according to claim 2, it is characterised in that:Described motor inner sleeve (2) outer surface is set
Two seals groove (11), per pass sealed groove (11) are disposed as the structure along the one week arrangement in motor inner sleeve (2) outer surface, water
Road groove (3) is arranged to the structure of motor inner sleeve (2) outer surface position between two seals groove (11), per pass sealing
One sealing ring (12) of setting-in in groove (11).
6. water-cooling motor structure according to claim 5, it is characterised in that:It is embedded in described per pass sealed groove (11)
Sealing ring (12) be arranged to protrude from the structures of sealed groove (11), sealing ring (12) upper surface is higher than motor inner sleeve (2) outside
Surface, motor inner sleeve (2) be sleeved on motor outer (1) it is interior when, each sealing ring (12) upper surface is configured to be resisted against electricity
The structure of machine overcoat (1) inner surface.
7. water-cooling motor structure according to claim 2, it is characterised in that:Described motor inner sleeve (2) outer surface is set
Multiple tracks water channel groove (3), multiple tracks water channel groove (3) are interconnected, and described sealed groove (11) includes left sealed groove (13)
With right sealed groove (14), water inlet pipe (4) water channel groove (11) together with close to left sealed groove (13) connects, outlet pipe
(5) water channel groove (11) connects together with close to right sealed groove (14), and sealing ring (12) is arranged to be made by elastomeric material
The structure formed.
8. water-cooling motor structure according to claim 7, it is characterised in that:Described motor inner sleeve (2) is sleeved on motor
When overcoat (1) is interior, motor outer (1) inner surface setting is that can extrude the sealing ring (12) being inlaid in left sealed groove (13)
Structure in deformation state, motor outer (1) inner surface setting for can extrude be inlaid in it is close in right sealed groove (14)
Seal (12) is in the structure of deformation state.
9. water-cooling motor structure according to claim 7, it is characterised in that:Described sealing ring (12) is arranged to rubber material
Expect the structure being made.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720424392.3U CN206908464U (en) | 2017-04-21 | 2017-04-21 | A kind of water-cooling motor structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720424392.3U CN206908464U (en) | 2017-04-21 | 2017-04-21 | A kind of water-cooling motor structure |
Publications (1)
Publication Number | Publication Date |
---|---|
CN206908464U true CN206908464U (en) | 2018-01-19 |
Family
ID=61290790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201720424392.3U Active CN206908464U (en) | 2017-04-21 | 2017-04-21 | A kind of water-cooling motor structure |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN206908464U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110649746A (en) * | 2018-06-27 | 2020-01-03 | 中车株洲电力机车研究所有限公司 | Motor frame for electric automobile |
-
2017
- 2017-04-21 CN CN201720424392.3U patent/CN206908464U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110649746A (en) * | 2018-06-27 | 2020-01-03 | 中车株洲电力机车研究所有限公司 | Motor frame for electric automobile |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN206602437U (en) | A kind of electric machine casing with cooling structure | |
CN103628997B (en) | The block structure of a kind of wind, water cooled engine | |
CN206908464U (en) | A kind of water-cooling motor structure | |
CN206387285U (en) | Two-pass radiator | |
CN204665383U (en) | Burner and there is the gas-cooker of this burner | |
CN206530416U (en) | Motorcycle engine structure | |
CN204921314U (en) | Air compressor machine advances exhaust system | |
CN211351970U (en) | Integrated power assembly controller and motor waterway direct connection sealing structure | |
CN204267438U (en) | Accurate energy internal-combustion engine flange | |
CN107757377A (en) | A kind of air flue bracket integrated novel pantograph carbon slide | |
CN207939348U (en) | Cooling water channel structure for automobile motor | |
CN203907058U (en) | Pipeline connecting structure | |
CN203098857U (en) | Intake tube gasket attached with rubber | |
CN206681946U (en) | New double-flow radiator | |
CN202140196U (en) | Cylinder gasket and sealing structure of high-power internal-combustion engine | |
CN207414305U (en) | A kind of split type shunting for improving the casting service life | |
CN206972935U (en) | Abrasionproof valve element for low pressure EGR valve | |
CN207395519U (en) | The multi-purpose hydroecium radiator of one | |
CN206608569U (en) | A kind of plastic body structure of temperature adjusting water tap | |
CN204492963U (en) | A kind of vehicle intercooler of anti-gas-leak | |
CN207711304U (en) | A kind of certainly cooling oil cylinder of injection mould cylinder body | |
CN206207093U (en) | A kind of water-cooled LED of good airproof performance | |
CN213332372U (en) | Framework oil seal structure adopting cold adhesive water layer for fixing | |
CN104088729A (en) | Electric EGR valve with cooling structure | |
CN205478652U (en) | Cooling device in idle chamber of pneumatic cylinder |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |