CN205841157U - For the upper shell of micro-compressor, housing and the micro-compressor with it - Google Patents

For the upper shell of micro-compressor, housing and the micro-compressor with it Download PDF

Info

Publication number
CN205841157U
CN205841157U CN201620687720.4U CN201620687720U CN205841157U CN 205841157 U CN205841157 U CN 205841157U CN 201620687720 U CN201620687720 U CN 201620687720U CN 205841157 U CN205841157 U CN 205841157U
Authority
CN
China
Prior art keywords
compressor
micro
upper shell
exhaustor
sidewall
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
Application number
CN201620687720.4U
Other languages
Chinese (zh)
Inventor
邹志锋
吴展鹏
杨开成
高斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Midea Toshiba Compressor Corp
Guangdong Meizhi Compressor Co Ltd
Anhui Meizhi Precision Manufacturing Co Ltd
Original Assignee
Guangdong Meizhi Compressor Co Ltd
Anhui Meizhi Precision Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong Meizhi Compressor Co Ltd, Anhui Meizhi Precision Manufacturing Co Ltd filed Critical Guangdong Meizhi Compressor Co Ltd
Priority to CN201620687720.4U priority Critical patent/CN205841157U/en
Application granted granted Critical
Publication of CN205841157U publication Critical patent/CN205841157U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Compressor (AREA)

Abstract

The utility model discloses a kind of upper shell for micro-compressor, housing and have its micro-compressor, the upper shell for micro-compressor includes: roof, sidewall and exhaustor, and sidewall is arranged around the periphery of roof, and sidewall is formed installing hole;One end of exhaustor is located in installing hole;One end of exhaustor is C with the minimum range of the free end place plane of sidewall, and the other end of exhaustor is D with the minimum range of the free end place plane of sidewall, and wherein, as D >=C, C meets: 2mm≤C < 10mm;As D < C, D meets: 2mm≤D < 10mm.According to the upper shell for micro-compressor of the present utility model, installing space is sufficient, is effectively prevented from exhaustor to the interference in welding process, significantly reduces assembly difficulty, improve efficiency of assembling, and improve the reliability of upper shell.Additionally, also reduce the axial length of upper shell, thus reduce the volume of the micro-compressor using this upper shell.

Description

For the upper shell of micro-compressor, housing and the micro-compressor with it
Technical field
This utility model relates to Compressor Technology field, especially relates to a kind of upper shell for micro-compressor, shell Body and there is its micro-compressor.
Background technology
In correlation technique, the upper shell of compressor is provided with exhaustor and binding post, but, compressor miniaturization After, it is considered to the technique manufacturing of upper shell, resistance to pressure, noise suppression etc., the upper shell of compressor such as micro-compressor is setting Meter and manufacture view can bring series of problems, such as: the exhaustor of upper shell and the placement space of binding post not, welding During occur that rosin joint, binding post are arranged on upper shell after, the sky of the such as motor lead-out wire insulation shell of the parts in upper shell Between not enough etc. so that the poor reliability of upper shell.
Utility model content
This utility model is intended at least to solve one of technical problem present in prior art.To this end, it is of the present utility model One purpose is to propose a kind of upper shell for micro-compressor, and the space of this upper shell being used for micro-compressor is sufficient And reliability is high.
Another purpose of the present utility model be to propose a kind of have above-mentioned upper shell for micro-compressor Housing.
Further object of the present utility model is to propose and a kind of has the above-mentioned compression for micro-compressor housing Machine.
According to the upper shell for micro-compressor of this utility model first aspect, including: roof;Sidewall, described side Wall is arranged around the periphery of described roof, and described sidewall is formed with installing hole;Exhaustor, one end of described exhaustor is located at institute State in installing hole;Described one end of described exhaustor is C with the minimum range of the free end place plane of described sidewall, described row The other end of trachea is D with the minimum range of the free end place plane of described sidewall, and wherein, as D >=C, described C meets: 2mm≤C < 10mm;As D < C, described D meets: 2mm≤D < 10mm.
According to the upper shell for micro-compressor of the present utility model, by reasonable design exhaustor and sidewall from By the minimum range between the plane of end place so that exhaustor has enough installing spaces, is effectively prevented from exhaustor butt welding Interference in termination process, thus efficiently avoid rosin joint, it is simple to exhaustor is welded in installing hole securely, greatly drops Low assembly difficulty, improves efficiency of assembling, and improves the reliability of upper shell.Additionally, also reduce the axial long of upper shell Degree, thus reduce the volume of the micro-compressor using this upper shell.
It addition, it is special to have following additional technology according to the upper shell for micro-compressor of the present utility model Levy:
Free end place according to embodiments more of the present utility model, the central axis of described exhaustor and described sidewall The angle of plane is E, and as D >=C, described E meets: 0 °≤E < 25 °.
Further, described roof is formed with through at least two manhole, is provided with in each described through hole absolutely Edge part, is provided with binding post in described insulating part, the described other end of described exhaustor is not higher than the top of described binding post.
According to embodiments more of the present utility model, described roof having planar portions, described through hole is formed at described flat On face, described planar portions tilts to extend or horizontally extending.
Specifically, described through hole is three, and described three through holes are the arrangement of product shape, the integral central of described three through holes The centrage of roof described in axis runout is arranged.
Alternatively, described insulating part is glass workpiece or ceramic member.
According to the housing for micro-compressor of this utility model second aspect, including: main casing, described main casing Open upper end;With the upper shell for micro-compressor according to the above-mentioned first aspect of this utility model, described upper shell connects Upper end at described main casing.
Specifically, the upper end of described main casing is connected with described upper shell in stretching into described upper shell.
Alternatively, described upper shell is connected on described main casing by gas shield welding, soldering or Laser Welding.
According to the micro-compressor of this utility model third aspect, including the use according to the above-mentioned second aspect of this utility model Housing in micro-compressor.
Additional aspect of the present utility model and advantage will part be given in the following description, and part will be from explained below In become obvious, or recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage are from combining general the accompanying drawings below description to embodiment Become obvious and easy to understand, wherein:
Fig. 1 is the structural representation of the upper shell for micro-compressor according to this utility model embodiment;
Fig. 2 is the top view of the upper shell for micro-compressor shown in Fig. 1;
Fig. 3 is the structural representation of the micro-compressor according to this utility model embodiment;
Fig. 4 is the structural representation of the micro-compressor according to another embodiment of this utility model.
Reference:
Upper shell 100,
Roof 1, planar portions 11, through hole 111,
Sidewall 2, exhaustor 3, motor lead-out wire insulation shell 4, insulating part 5, binding post 6,
Housing 200, main casing 201, micro-compressor 300.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng It is exemplary for examining the embodiment that accompanying drawing describes, and is only used for explaining this utility model, and it is not intended that to of the present utility model Limit.
In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward ", Orientation or the position relationship of the instruction such as " axially ", " radially ", " circumferential " are based on orientation shown in the drawings or position relationship, are only Must have specific for the ease of describing this utility model and simplification description rather than instruction or the device of hint indication or element Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the One ", " second " be only used for describing purpose, and it is not intended that instruction or hint relative importance or implicit indicate indicated The quantity of technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include one or more Multiple this feature.In description of the present utility model, except as otherwise noted, " multiple " are meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly Connect;Can be to be mechanically connected, it is also possible to be electrical connection;Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Language concrete meaning in this utility model.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it D score can include that the first and second features directly contact, it is also possible to includes that the first and second features are not directly contact but logical Cross the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " include Fisrt feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height higher than second feature.First Feature second feature " under ", " lower section " and " below " include fisrt feature directly over second feature and oblique upper, or only Only represent that fisrt feature level height is less than second feature.
Below with reference to Fig. 1-Fig. 4, the upper shell for micro-compressor 300 according to this utility model embodiment is described 100.Upper shell 100 is applicable to micro-compressor 300.Wherein, micro-compressor 300 can be micro rotary compressor etc., But it is not limited to this.
Here, it should be noted that micro-compressor refers to refrigerating capacity less than the system that 1KW such as refrigerating capacity is 500W etc. Cold compressor.Micro-compressor may be used for mini-refrigerator system, such as, may be used for on-board air conditioner, car refrigerator etc..Miniature The diameter of compressor housing is usually more than 65mm.
Alternatively, micro-compressor 300 can be vertical compressor.Certainly, those skilled in the art are appreciated that Micro-compressor 300 can also be horizontal compressor (not shown).In the application explained below, with micro-compressor 300 illustrate for as a example by vertical compressor.
As it is shown in figure 1, according to the upper shell 100 for micro-compressor 300 of this utility model first aspect embodiment, Including: roof 1, sidewall 2 and exhaustor 3, sidewall 2 is arranged around the periphery of roof 1.For example, referring to Fig. 1, upper shell 100 is permissible Be formed as the bowl structure of open at its lower end, but be not limited to this.The cross section of sidewall 2 can be formed as circle etc., but is not limited to this.
Alternatively, can be connected by arc transition between sidewall 2 with roof 1.Thus, improve the knot of upper shell 100 Structure intensity.
Wherein, sidewall 2 being formed with installing hole, installing hole can be the circular port running through sidewall 2.One end of exhaustor 3 (such as, the right-hand member in Fig. 1) is located in installing hole, the air inside and outside to connect micro-compressor 300.Alternatively, row It is empty interior that trachea 3 can be welded on installation.Such as, exhaustor 3 can be by laser welding in installing hole.Thus, it is possible to effectively The impact that upper shell 100 is produced by the heat produced when ground reduces welding, prevents upper shell 100 from deforming, thus improves The reliability of upper shell 100.
Alternatively, exhaustor 3 can be formed as pipe, but is not limited to this.
Specifically, free end (such as, the lower end in Fig. 1) the place plane of above-mentioned one end of exhaustor 3 and sidewall 2 is Small distance is C, the other end (such as, the left end in Fig. 1) of exhaustor 3 and the minimum range of the free end place plane of sidewall 2 For D.For example, referring to Fig. 1, minimum range C refers to the lower surface of exhaustor 3 right-hand member and the junction of upper shell 100 and sidewall The distance of place, the lower end plane of 2, minimum range D refers to the lower surface of the left end mouth of pipe of exhaustor 3 and the lower end of sidewall 2 The distance of place plane.
Wherein, as D >=C, C meets: 2mm≤C < 10mm;As D < C, D meets: 2mm≤D < 10mm.Namely Say, less in the minimum range of the free end place plane of above-mentioned one end of exhaustor 3 and the above-mentioned other end and sidewall 2 one Meet more than or equal to 2mm and less than 10mm.
For example, referring to Fig. 1, exhaustor 3 is horizontally extending, above-mentioned one end of exhaustor 3 and the above-mentioned other end and side The minimum range of the free end place plane of wall 2 is equal, i.e. D=C, and now C and D meets: 2mm≤C=D < 10mm.
And for example, with reference to Fig. 3, the above-mentioned other end of exhaustor 3 is directed away from the direction of the central axis of upper shell 100 upwards Tilting to extend, now, above-mentioned one end of exhaustor 3 is less with the minimum range of the free end place plane of sidewall 2, i.e. D > C, Now, C meets: 2mm≤C < 10mm.Thus so that exhaustor 3 has enough installing spaces, it is effectively prevented from exhaustor 3 To the interference in welding process, thus efficiently avoid rosin joint, it is simple to be welded on securely in installing hole by exhaustor 3, pole The earth reduces assembly difficulty, improves efficiency of assembling, and improves the reliability of upper shell 100.
For another example, with reference to Fig. 4, the direction of the central axis that the above-mentioned other end of exhaustor 3 is directed away from upper shell 100 is downward Tilting to extend, now, the above-mentioned other end of exhaustor 3 is less with the minimum range of the free end place plane of sidewall 2, i.e. D < C, now, D meets: 2mm≤D < 10mm.Thus, equally make exhaustor 3 have enough installing spaces, effectively keep away Exempt from exhaustor 3 to the interference in welding process, thus efficiently avoid rosin joint, it is simple to exhaustor 3 is welded on peace securely In dress hole, significantly reduce assembly difficulty, improve efficiency of assembling, and improve the reliability of upper shell 100.
According to the upper shell 100 for micro-compressor 300 of this utility model embodiment, by reasonable design aerofluxus Minimum range between the free end place plane of pipe 3 and sidewall 2 so that exhaustor 3 has enough installing spaces, effectively Avoid exhaustor 3 to the interference in welding process, thus efficiently avoid rosin joint, it is simple to exhaustor 3 is welded on securely In installing hole, significantly reduce assembly difficulty, improve efficiency of assembling, and improve the reliability of upper shell 100.Additionally, Also reduce the axial length of upper shell 100, thus reduce the volume of the micro-compressor 300 using this upper shell 100.
Free end place plane according to embodiments more of the present utility model, the central axis of exhaustor 3 and sidewall 2 Angle is E, and as D >=C, E meets: 0 °≤E < 25 °.It is to say, when the left end of exhaustor 3 is directed away from upper shell 100 It is inclined upwardly when extending (as shown in Figure 3) on central axial direction, the central axis of exhaustor 3 and the free end institute of sidewall 2 Meet at the angle E of plane: 0 °≤E < 25 °.Its concrete numerical value can be according to the specifications and models adjusted design of upper shell 100, this This is not specifically limited by utility model.Such as, E can meet further: E=10 °, E=15 °, E=25 ° etc..Thus, may be used To avoid the exhaustor 3 interference to welding process further, thus create a further reduction assembly difficulty, reduce and be processed into This.
Further, roof 1 is formed with through at least two manhole 111, is provided with in each through hole 111 absolutely Edge part 5, is provided with binding post 6 in insulating part 5, such as, insulating part 5 can be sintered in through hole 111, and binding post 6 can burn Knot is in insulating part 5, but is not limited to this.The above-mentioned other end (i.e. left end in Fig. 3) of exhaustor 3 is not higher than the top of binding post 6 End.Thus, it is possible to reduce the axial length of upper shell 100 further, thus further reduce micro-compressor 300 Volume.
Alternatively, insulating part 5 can be glass workpiece or ceramic member, but is not limited to this.
According to embodiments more of the present utility model, as in figure 2 it is shown, have planar portions 11 on roof 1, through hole 111 is formed In planar portions 11, planar portions 11 tilts to extend or horizontally extending.For example, referring to Fig. 1 and Fig. 2, roof 1 is along level side To extension, the shape of cross section of roof 1 is circular, and the cross section of planar portions 11 is again formed as circle, and planar portions 11 is transversal The center of circle in face overlaps with the center of circle of the cross section of roof 1.Thus, it is simple on roof 1, process through hole 111, reduce difficult processing Degree, improves production efficiency, and can ensure that the overall construction intensity of upper shell 100.
Specifically, as in figure 2 it is shown, through hole 111 is three, three through holes 111 are arranged in product shape, three through holes 111 The centrage of integral central axis runout roof 1 is arranged.It is understood that the integral central axis of three through holes 111 is will Three through holes 111 are considered as the central axis of this product word structure during an overall product word structure.Thus, it is simple to by binding post 6 Install in through hole 111, and after binding post 6 being installed to through hole 111, can reserve enough in upper shell 100 Space mounting motor lead-out wire insulation shell 4, such that it is able to easily motor lead-out wire insulation shell 4 is assembled in upper shell 100, Efficiently avoid the problems such as Assembly Interference, and be effectively improved the safety of motor lead-out wire insulation shell 4, and then improve Use the reliability of the micro-compressor 300 of this upper shell 100.
According to the upper shell 100 for micro-compressor 300 of this utility model embodiment, at micro-compressor 300 Under conditions of housing 200 space and overall dimensions limit, carry for binding post 6, exhaustor 3 and motor lead-out wire insulation shell 4 Supply the installing space of abundance, the problem interfered between each parts during efficiently avoid assembling, reduce assembling Difficulty, improves efficiency of assembling and simple in construction, anufacturability is good, reliability is high.
As shown in Figure 3 and Figure 4, according to the housing for micro-compressor 300 of this utility model second aspect embodiment 200, including: main casing 201 with according to the upper shell for micro-compressor 300 of the above-mentioned first aspect of this utility model 100。
Wherein, the open upper end of main casing 201, upper shell 100 is connected to the upper end of main casing 201.Alternatively, upper shell 100 can be connected on main casing 201 by gas shield welding, soldering or Laser Welding, and technique is simple, it is simple to realize.
Specifically, with reference to Fig. 3 and Fig. 4, the upper end of main casing 201 is connected with upper shell 100 in stretching into upper shell 100.Also That is, the outside wall surface being wrapped in main casing 201 outside the internal face of upper shell 100 is arranged.Thus, it is effectively improved main casing The inner space utilization rate of 201, thus improve the integral space utilization ratio of housing 200, reduce the body of micro-compressor 300 Long-pending.
According to the housing 200 for micro-compressor 300 of this utility model second aspect embodiment, by arranging basis The upper shell 100 for micro-compressor 300 of this utility model above-mentioned first aspect embodiment, improves the sky of housing 200 Between utilization rate, reduce assembly difficulty, improve efficiency of assembling and simple in construction, anufacturability is good, reliability is high.
As shown in Figure 3 and Figure 4, according to the micro-compressor 300 of this utility model third aspect embodiment, including according to this The housing 200 for micro-compressor 300 of utility model above-mentioned second aspect embodiment.
According to the micro-compressor 300 of this utility model third aspect embodiment, above-mentioned by arranging according to utility model The housing 200 for micro-compressor 300 of second aspect embodiment, improves the reliability of micro-compressor 300, reduces The volume of micro-compressor 300.
In the description of this specification, reference term " embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " concrete example " or " some examples " etc. means to combine this embodiment or the specific features of example description, knot Structure, material or feature are contained at least one embodiment of the present utility model or example.In this manual, to above-mentioned art The schematic representation of language is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or Person's feature can combine in any one or more embodiments or example in an appropriate manner.
Embodiment the most of the present utility model, it will be understood by those skilled in the art that: In the case of without departing from principle of the present utility model and objective, these embodiments can be carried out multiple change, revise, replace And modification, scope of the present utility model is limited by claim and equivalent thereof.

Claims (10)

1. the upper shell for micro-compressor, it is characterised in that including:
Roof;
Sidewall, described sidewall arranges around the periphery of described roof, described sidewall is formed with installing hole;
Exhaustor, one end of described exhaustor is located in described installing hole;
Described one end of described exhaustor is C with the minimum range of the free end place plane of described sidewall, described exhaustor The other end is D with the minimum range of the free end place plane of described sidewall, wherein,
As D >=C, described C meets: 2mm≤C < 10mm;
As D < C, described D meets: 2mm≤D < 10mm.
Upper shell for micro-compressor the most according to claim 1, it is characterised in that the central shaft of described exhaustor Line is E with the angle of the free end place plane of described sidewall, and as D >=C, described E meets: 0 °≤E < 25 °.
Upper shell for micro-compressor the most according to claim 1 and 2, it is characterised in that formed on described roof There is through at least two manhole, in each described through hole, be provided with insulating part, in described insulating part, be provided with binding post, institute The described other end stating exhaustor is not higher than the top of described binding post.
Upper shell for micro-compressor the most according to claim 3, it is characterised in that on described roof, there is plane Portion, described through hole is formed in described planar portions, and described planar portions tilts to extend or horizontally extending.
Upper shell for micro-compressor the most according to claim 3, it is characterised in that described through hole is three, institute Stating three through holes is the arrangement of product shape, and described in the integral central axis runout of described three through holes, the centrage of roof is arranged.
Upper shell for micro-compressor the most according to claim 3, it is characterised in that described insulating part is glass workpiece Or ceramic member.
7. the housing for micro-compressor, it is characterised in that including:
Main casing, the open upper end of described main casing;With
According to the upper shell for micro-compressor according to any one of claim 1-6, described upper shell is connected to described The upper end of main casing.
Housing for micro-compressor the most according to claim 7, it is characterised in that the upper end of described main casing is stretched into It is connected with described upper shell in described upper shell.
9. according to the housing for micro-compressor described in claim 7 or 8, it is characterised in that described upper shell passes through gas Protect weldering, soldering or Laser Welding to be connected on described main casing.
10. a micro-compressor, it is characterised in that include according to according to any one of claim 7-9 for miniature pressure The housing of contracting machine.
CN201620687720.4U 2016-06-30 2016-06-30 For the upper shell of micro-compressor, housing and the micro-compressor with it Active CN205841157U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620687720.4U CN205841157U (en) 2016-06-30 2016-06-30 For the upper shell of micro-compressor, housing and the micro-compressor with it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620687720.4U CN205841157U (en) 2016-06-30 2016-06-30 For the upper shell of micro-compressor, housing and the micro-compressor with it

Publications (1)

Publication Number Publication Date
CN205841157U true CN205841157U (en) 2016-12-28

Family

ID=58151203

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620687720.4U Active CN205841157U (en) 2016-06-30 2016-06-30 For the upper shell of micro-compressor, housing and the micro-compressor with it

Country Status (1)

Country Link
CN (1) CN205841157U (en)

Similar Documents

Publication Publication Date Title
CN104379899A (en) Turbine housing assembly and production method for turbine housing assembly
CN102141329B (en) Automotive air conditioning system and liquid reservoir of automotive air conditioning system
CN205303766U (en) Heavy current jack
CN205841157U (en) For the upper shell of micro-compressor, housing and the micro-compressor with it
CN106015002A (en) Upper casing for micro compressor and micro compressor with upper casing
CN203272142U (en) Micro-compressor shell structure
CN105179204B (en) Compressor, upper cover and exhaust pipe assembly and exhaust pipe structure thereof
CN204628062U (en) Centrifugal wind wheel, centrifugal blower and air conditioner
CN205841202U (en) For the upper shell of micro-compressor and the micro-compressor with it
JP2011185123A (en) Compressor unit, air conditioner, and water heater
CN102477985B (en) Integratedly designed rotary compressor structure
CN208920380U (en) Middle partition and air-conditioner outdoor unit for air-conditioner outdoor unit
KR20130013801A (en) Accumulator for compressor
CN206922130U (en) High-tension connector
CN207217243U (en) A kind of inexpensive igniter of gasoline engine
CN205429141U (en) Antenna pot external member
CN208296082U (en) air conditioner
CN202992437U (en) Rotating compressor and pipe for same
CN102562618B (en) Centrifugal fan
CN102410392B (en) Electrically operated valve
CN206364609U (en) stator punching and stator and compressor
CN206246319U (en) A kind of compressor of air conditioner expanding sandwich type element
CN206226160U (en) Stator core and the motor with it, compressor
CN204739006U (en) Rotary compressor's casing and have its rotary compressor
CN104467215A (en) Motor and magnet assembly thereof

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant