CN101864654A - Drum for washing machine and manufacturing method thereof - Google Patents
Drum for washing machine and manufacturing method thereof Download PDFInfo
- Publication number
- CN101864654A CN101864654A CN201010174404A CN201010174404A CN101864654A CN 101864654 A CN101864654 A CN 101864654A CN 201010174404 A CN201010174404 A CN 201010174404A CN 201010174404 A CN201010174404 A CN 201010174404A CN 101864654 A CN101864654 A CN 101864654A
- Authority
- CN
- China
- Prior art keywords
- drum
- mentioned
- cylinder
- washing machine
- centre
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/02—Making hollow objects characterised by the structure of the objects
- B21D51/04—Making hollow objects characterised by the structure of the objects built-up objects, e.g. objects with rigidly-attached bottom or cover
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The present invention relates to a drum for washing machine and a manufacturing method thereof. The manufacturing method according to the invention is characterized by comprising the following steps: a first step of rolling a metal plate to a cylindrical shape, performing surface welding to the connection parts at two ends and shaping the central part of the drum; a second step of shaping with a mode that the diameter of the front part and the back part of the drum center part is different from the diameter of the central part; and a third step of respectively combining the front part and the back part of the drum center part with the front part and the back part of the drum. According to the manufacturing method, the capacity of the washing machine can be enlarged, and furthermore the cost can be reduced.
Description
Technical field
The present invention relates to drum for washing machine and preparation method thereof.
Background technology
Generally speaking, washing machine comprises with lower member: the bucket of internal reservoir washings, the rotatable inboard cylinder of bucket that is arranged at.But, in order to increase the capacity of washing machine, needing together to increase the capacity of bucket and cylinder, various problems will appear in this case.
Summary of the invention
The objective of the invention is to overcome the prior art above shortcomings, improve, a kind of drum for washing machine and preparation method thereof is provided by research, in the present invention, in the capacity that increases washing machine, can cost saving.Particularly, according to the present invention, in the capacity that increases cylinder, can also continue to use the device that uses in the general cylinder.
The technical scheme that the present invention provides is: the preparation method of drum for washing machine of the present invention, it is characterized in that may further comprise the steps: with metal plate coils is cylindrical shape, and the connecting portion at both ends is carried out face welding, the 1st step of forming cylinder central part; Make the 2nd step of the mutually different moulding of diameter of the front part of portion of above-mentioned centre of the drum and back diameter of quadrate part and central portion; The 3rd step of quadrate part after the place ahead of portion of above-mentioned centre of the drum and rear are respectively in conjunction with cylinder front part and cylinder.
The preparation method of aforesaid drum for washing machine is characterized in that: in above-mentioned the 2nd step, make the identical moulding of diameter of the front part and the back quadrate part of portion of above-mentioned centre of the drum.
The preparation method of aforesaid drum for washing machine is characterized in that: in above-mentioned the 2nd step, front part and back quadrate part from the outside to portion of above-mentioned centre of the drum pressurize moulding collapsible tube portion.
The preparation method of aforesaid drum for washing machine, it is characterized in that: in above-mentioned the 3rd step, also include for by the end of certain-length the step of being curled in the end of quadrate part behind above-mentioned cylinder front part and the cylinder around the front part of portion of above-mentioned centre of the drum and back quadrate part.
Drum for washing machine of the present invention, include quadrate part and portion of centre of the drum behind cylinder front part, the cylinder, it is characterized in that: portion of above-mentioned centre of the drum is the metallic plate that curls, and carry out the face welding fabrication, and, also be formed with central portion, and reach the collapsible tube portion of rear diameter forwardly less than above-mentioned central portion.
Aforesaid drum for washing machine is characterized in that: above-mentioned central portion utilizes rake to be connected with above-mentioned collapsible tube portion.
Aforesaid drum for washing machine is characterized in that: the diameter of above-mentioned the place ahead collapsible tube portion and rear collapsible tube portion is practically identical.
Aforesaid drum for washing machine is characterized in that: above-mentioned collapsible tube portion is that front part and the back quadrate part to portion of above-mentioned centre of the drum carries out extrusion forming from the outside.
Aforesaid drum for washing machine is characterized in that: quadrate part connects in order to curl around the end of the collapsible tube portion of portion of above-mentioned centre of the drum behind above-mentioned cylinder front part and the cylinder.
Compared with prior art, the invention has the beneficial effects as follows: by increasing the diameter of cylinder, can increase capacity, simultaneously because in the place ahead of cylinder and the rear possess collapsible tube portion arranged, therefore, can continue to use original device.And, can in the high capacity of realizing washing machine, suppress the rising of expense to greatest extent.
Description of drawings
Fig. 1 is the cross-sectional side view that shows the structure of washing machine.
Fig. 2 is the cross-sectional side view of an embodiment that shows the cylinder of washing machine.
Fig. 3 is the cross-sectional side view of another embodiment that shows the cylinder of washing machine.
Fig. 4 is the flow chart that shows the preparation method of drum for washing machine.
Fig. 5 to Fig. 9 is the skeleton diagram that shows the making engineering of drum for washing machine in order.
The specific embodiment
Below, with reference to the accompanying drawings, to being described in detail according to preferred embodiment of the present invention.
Fig. 1 is the cross-sectional side view that shows the structure of washing machine.
With reference to Fig. 1, washing machine is by with lower member institute member: the housing 100 that forms outward appearance; Be arranged at the inside of housing 100, be used to store the bucket 10 of washings; The rotatable cylinder 20 that is arranged at the inboard of bucket 10.
Above-mentioned housing 100 is formed with the input port 16 that is used to throw in washings, and above-mentioned input port 16 is by rotatable 18 switchings of door that form.
The inner peripheral surface of cylinder 20 is provided with lifting device 23, and the washings that above-mentioned lifting device 23 is used for devoting cylinder 20 rises to certain position.And above-mentioned cylinder 20 also is formed with a plurality of through holes 25, and above-mentioned a plurality of through holes 25 can make washings come in and go out in cylinder 20.
In addition, the rear of bucket 10 is equipped with motor 30, and above-mentioned motor 30 will combine with cylinder by rotating shaft 32, thereby cylinder 20 is rotated.
Bottom one side of bucket 10 can also be provided with lower member: be used for heater heating washing water 19; Be used for detecting the temperature sensor (figure is prompting not) of the water temperature of washings.Washing machine will utilize 19 pairs of washings of heater to heat according to user's selection.
Below, will the cylinder 20 of aforesaid washing machine be described in more detail.Fig. 2 is the cross-sectional side view that shows cylinder shown in Figure 1.
With reference to Fig. 2, cylinder 20 comprises with lower member: portion of centre of the drum 22; Be positioned at the cylinder front part 24 in the place ahead of portion of centre of the drum 22; Quadrate part 26 behind the cylinder of the rear surface of portion of formation centre of the drum 22.
Portion of centre of the drum 22 has the columnar shape of the place ahead and rear opening, and, being formed with a plurality of through holes 25, the washings that supply to bucket 10 will flow into the inside of cylinder 20 by above-mentioned through hole 25.
Wherein, portion of centre of the drum 22 can be made by the following method.The metal plate coils of certain size is got up, make it cylindrical after, utilize the connecting portion be welded to connect both ends, thereby make portion of centre of the drum 22.In this case, connect the method for the connecting portion at both ends, can adopt seam (seaming) welding manner.
Then, quadrate part 26 behind cylinder front part 24 and the cylinder is incorporated into the place ahead and the rear of portion of centre of the drum 22 respectively.Cylinder front part 24 is pressed certain-length and is centered on the front ends of portion of centre of the drum 22 and curl (curling) connection.In Fig. 2, symbol 28 is expression curled portion.That is, the end of cylinder front part 24 forms curled portion around the front ends of portion of centre of the drum 22, and above-mentioned cylinder front part 24 utilizes curled portion to be connected in portion of centre of the drum 22.In addition, quadrate part 26 also can be connected by curling with cylinder front part 24 similar modes behind the cylinder.That is, quadrate part 26 is pressed certain-length and is curled around the rear end of portion of centre of the drum 22 and connect behind the cylinder.
Recently, the situation of the washings that user's once washing is a large amount of increases gradually, therefore, also requires the high capacity of washing machine.But, in order to increase the capacity of washing machine, the volume of cylinder and bucket is increased, particularly, the high capacity of cylinder is necessary.
But, as mentioned above, utilize curled portion to be connected under the situation of portion of centre of the drum 22 quadrate part 26 behind cylinder front part 24 and the cylinder, need possess the size that has corresponding to portion of centre of the drum 22, particularly corresponding to the device of diameter, the work of curling.That is, utilize the device corresponding to the diameter of portion of centre of the drum, quadrate part behind portion of centre of the drum and cylinder front part or portion of centre of the drum and the cylinder is curled to be connected.
Therefore, in order to increase the capacity of washing machine,, under the situation that connects quadrate part behind portion of centre of the drum and cylinder front part, portion of centre of the drum and the cylinder, can not use original device with increasing the diameter of portion of centre of the drum.Consequently, the operation device that need to change curls for the high capacity of washing machine, thus cause making the problem of the expense rising of enterprise.
Therefore, the present invention has considered a kind of high capacity that both can increase washing machine, can continue to use curling operation cylinder of device and preparation method thereof in the past again.
Fig. 3 is the cross-sectional side view that shows another embodiment of drum for washing machine.And for convenience of explanation, Fig. 3 to Fig. 9 does not point out through hole.
With reference to Fig. 3, comprise following parts according to the cylinder 200 of present embodiment: portion of centre of the drum 220; Be connected in the cylinder front part 240 in the place ahead of portion of centre of the drum 220; Be connected in quadrate part 260 behind the cylinder at rear of portion of centre of the drum 220.Further, include collapsible tube portion 224 according to the portion of centre of the drum 220 of present embodiment, the diameter of above-mentioned collapsible tube portion 224 is less than the diameter of central portion 222.Wherein, the diameter of above-mentioned central portion 222 is greater than the diameter of the portion of centre of the drum 22 of aforesaid Fig. 2.That is, the diameter of the central portion 222 by increasing portion of centre of the drum 220 will increase the capacity of cylinder 200.
In addition, the place ahead of portion of centre of the drum 220 and rear possess collapsible tube portion 224 are arranged, and the diameter of above-mentioned collapsible tube portion 224 is less than the diameter of the central portion 222 of portion of centre of the drum 220.Because therefore the diameter of collapsible tube portion 224, will utilize rake 226 to be connected with central portion 222 less than the diameter of central portion 222.The diameter of collapsible tube portion 224 is less than the diameter of central portion 222, and still, the diameter of the diameter of collapsible tube portion 224 and portion of centre of the drum illustrated in fig. 2 22 is roughly the same.
Therefore, the diameter of the central portion 222 of portion of centre of the drum 220 thus, can increase the capacity of cylinder 200 greater than the diameter of aforesaid cylinder.And, being arranged at the diameter of collapsible tube portion 224 at the place ahead of portion of centre of the drum 220 and rear and the diameter of aforesaid cylinder is roughly the same, therefore, quadrate part 260 is connected under the situation of portion of centre of the drum 220 after utilizing curled portion with cylinder front part 240 and cylinder, can continue to use the curling operation of in the past using to carry out connection work with device.
Below, will the method for making aforesaid cylinder 200 be described.
Fig. 4 is the flow chart that shows the preparation method of drum for washing machine.
With reference to Fig. 4, the method for making cylinder is as follows.At first, forming cylinder central part 220 (S410) then, forms collapsible tube 224 (S430) of portion at the place ahead and the rear of portion of centre of the drum 220, then, quadrate part 260 behind cylinder front part 240 and the cylinder is connected in portion of centre of the drum 220 (S450).
Fig. 5 to Fig. 9 is the skeleton diagram that shows the making engineering of drum for washing machine in order.Below, with reference to the accompanying drawings, preparation method is described in detail.
At first, as shown in Figure 5, prepare metallic plate 300.
Then, as shown in Figure 6, operating personnel's metallic plate 300 that curls utilizes welding manner to connect its connecting portion.In this case, the both ends that make metallic plate 300 with certain-length overlapping after, carry out face welding 310.
Under the situation of in the past making drum for washing machine,, then can't bear the increase of the gravity that the high capacity of cylinder brings if carry out the seam welding.Therefore, in the present embodiment, when making jumbo cylinder as mentioned above,, under the situation of making portion of centre of the drum, its connecting portion is carried out the face welding in order to strengthen intensity.In case carry out the face welding,, therefore,, also can bear the increase of weight even increase the capacity of cylinder because the bond strength of connecting portion increases.Particularly, carrying out under the situation of face welding, make the overlapping certain-length of connecting portion at both ends of metallic plate 300 after, the face welding is carried out in the space between the overlapping part, finally finish portion of columnar centre of the drum.
Then, in the place ahead and the rear moulding collapsible tube portion 224 of portion of centre of the drum 220.
Fig. 7 and Fig. 8 are the skeleton diagrams that shows the process of moulding collapsible tube portion 224.Among Fig. 7 and Fig. 8, what at first show is process in the place ahead of portion of centre of the drum 220 moulding collapsible tube portion 224, and the left side of the portion of centre of the drum 220 among Fig. 7 shows the front part of cylinder.
With reference to Fig. 7, at first, stationary fixture 500 is set in the inboard of portion of columnar centre of the drum 220, then, at the arranged outside pulley 400 of portion of centre of the drum 220, outside-in pressurizes to pulley 400, makes its periphery rotation along portion of centre of the drum 220.At this moment, the central portion of stationary fixture 500 is formed with depressed part 510, and the central portion of pulley 400 is formed with the protuberance 410 corresponding to above-mentioned depressed part 510.Therefore, under the situation that pulley 400 rotates along the periphery of portion of centre of the drum 220, protuberance 410 will be inserted in depressed part 510, be rotated in to 220 pressurizations of portion of centre of the drum.Consequently, the place ahead of portion of centre of the drum 220 will be according to the shape moulding of protuberance 410 and depressed part 510, therefore, because pulley 400 will form the little collapsible tube portion 224 of diameter.
Then, operating personnel will be as mentioned above portion of centre of the drum 220 usefulness the upper clamp 600 and the lower clamp 620 of moulding fix, and utilize pulley cover 640 that front part is cut certain-length.Its reason is, because the length of portion of centre of the drum is long, therefore, in order to be connected with collapsible tube portion, cuts the diameter position identical with central portion again.
After finishing aforesaid engineering, as shown in Figure 9, be formed with collapsible tube portion 224 forwardly after, utilize rake 226 to connect collapsible tube portions 224 and central portions 222, and forming cylinder central part 220.In addition, only be the different of direction in the process of the rear of portion of centre of the drum 220 moulding collapsible tube portion 224 with above-mentioned process, therefore, no longer it is described in detail.And the diameter that is formed at the collapsible tube portion 224 at the place ahead of portion of centre of the drum 220 and rear respectively can have nothing in common with each other, and still, for the ease of making, preferably makes its diameter identical.
Then, operating personnel are connected in quadrate part 260 behind cylinder front part 240 and the cylinder the place ahead and the rear of portion of centre of the drum 220 respectively.In this case, the operation of utilize curling is curled with device and is connected, because the diameter of collapsible tube portion 224 is identical with the diameter of in the past cylinder, therefore, can continue to use the curling operation of cylinder use in the past to work on device.
The present invention is illustrated according to embodiment, should be appreciated that the foregoing description does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the equivalent transformation mode is obtained, all drops within protection scope of the present invention.
Claims (9)
1. the preparation method of a drum for washing machine is characterized in that, may further comprise the steps: with metal plate coils is cylindrical shape, and the connecting portion at both ends is carried out face welding, the 1st step of forming cylinder central part; Make the 2nd step of the mutually different moulding of diameter of the front part of portion of above-mentioned centre of the drum and back diameter of quadrate part and central portion; The 3rd step of quadrate part after the place ahead of portion of above-mentioned centre of the drum and rear are respectively in conjunction with cylinder front part and cylinder.
2. the preparation method of drum for washing machine according to claim 1 is characterized in that: in above-mentioned the 2nd step, make the identical moulding of diameter of the front part and the back quadrate part of portion of above-mentioned centre of the drum.
3. the preparation method of drum for washing machine according to claim 2 is characterized in that: in above-mentioned the 2nd step, front part and back quadrate part from the outside to portion of above-mentioned centre of the drum pressurize moulding collapsible tube portion.
4. the preparation method of drum for washing machine according to claim 1, it is characterized in that: in above-mentioned the 3rd step, also include for by the end of certain-length the step of being curled in the end of quadrate part behind above-mentioned cylinder front part and the cylinder around the front part of portion of above-mentioned centre of the drum and back quadrate part.
5. drum for washing machine, include quadrate part and portion of centre of the drum behind cylinder front part, the cylinder, it is characterized in that: portion of above-mentioned centre of the drum is the metallic plate that curls, and carry out the face welding fabrication, and, also be formed with central portion, and reach the collapsible tube portion of rear diameter forwardly less than above-mentioned central portion.
6. drum for washing machine according to claim 5 is characterized in that: above-mentioned central portion utilizes rake to be connected with above-mentioned collapsible tube portion.
7. drum for washing machine according to claim 5 is characterized in that: the diameter of above-mentioned the place ahead collapsible tube portion and rear collapsible tube portion is practically identical.
8. drum for washing machine according to claim 7 is characterized in that: above-mentioned collapsible tube portion is that front part and the back quadrate part to portion of above-mentioned centre of the drum carries out extrusion forming from the outside.
9. drum for washing machine according to claim 7 is characterized in that: quadrate part connects in order to curl around the end of the collapsible tube portion of portion of above-mentioned centre of the drum behind above-mentioned cylinder front part and the cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090083688A KR101901926B1 (en) | 2009-09-04 | 2009-09-04 | Drum for washer and manufacturing method thereof |
| KR10-2009-0083688 | 2009-09-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101864654A true CN101864654A (en) | 2010-10-20 |
| CN101864654B CN101864654B (en) | 2013-07-10 |
Family
ID=42956568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101744044A Expired - Fee Related CN101864654B (en) | 2009-09-04 | 2010-04-30 | Drum for washing machine and manufacturing method thereof |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101901926B1 (en) |
| CN (1) | CN101864654B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572416A (en) * | 2003-06-05 | 2005-02-02 | Lg电子株式会社 | Method and apparatus of manufacturing drum |
| EP1704274A1 (en) * | 2003-11-20 | 2006-09-27 | Arcelik Anonim Sirketi | A drum with stiffening corrugations along the seam |
| CN1898432A (en) * | 2004-05-15 | 2007-01-17 | Lg电子株式会社 | Drum of washing machine and method for manufacturing the same |
| WO2009030638A1 (en) * | 2007-09-03 | 2009-03-12 | Arcelik Anonim Sirketi | A washer/dryer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003181545A (en) | 2001-12-13 | 2003-07-02 | Koshin Giken:Kk | Molding method for bellows tube |
| JP4180078B2 (en) | 2005-08-31 | 2008-11-12 | 株式会社イトウ | Method and apparatus for installing interior can of double drum can |
-
2009
- 2009-09-04 KR KR1020090083688A patent/KR101901926B1/en active IP Right Grant
-
2010
- 2010-04-30 CN CN2010101744044A patent/CN101864654B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572416A (en) * | 2003-06-05 | 2005-02-02 | Lg电子株式会社 | Method and apparatus of manufacturing drum |
| EP1704274A1 (en) * | 2003-11-20 | 2006-09-27 | Arcelik Anonim Sirketi | A drum with stiffening corrugations along the seam |
| CN1898432A (en) * | 2004-05-15 | 2007-01-17 | Lg电子株式会社 | Drum of washing machine and method for manufacturing the same |
| WO2009030638A1 (en) * | 2007-09-03 | 2009-03-12 | Arcelik Anonim Sirketi | A washer/dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101901926B1 (en) | 2018-09-27 |
| CN101864654B (en) | 2013-07-10 |
| KR20110025564A (en) | 2011-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201029863Y (en) | Dishwasher | |
| CN201826162U (en) | Rinsing machine | |
| CN106821250A (en) | Dish-washing machine | |
| CN106192272A (en) | A kind of wave roller and wave roller working method | |
| CN101402301A (en) | Aluminum alloy vehicle wheel and manufacturing method therefor | |
| CN105832268A (en) | Dish washer | |
| CN101864654B (en) | Drum for washing machine and manufacturing method thereof | |
| CN201864963U (en) | Rotary drum for washing machine | |
| CN107052711A (en) | A kind of manufacture method of the double inner bags of storage-type electric water heater | |
| US6267555B1 (en) | Sheet metal casing for multistage pump and method for manufacturing the same | |
| CN206337447U (en) | For the scalable laundry bag of rotary drum washing machine and the rotary drum washing machine with it | |
| CN210486058U (en) | Novel quick-heating electric water heater | |
| CN209142626U (en) | Folding connection container | |
| CN205420820U (en) | Agitating unit and portable pail of assembling that charges thereof | |
| CN207184184U (en) | A kind of outer rotor component | |
| CN206092115U (en) | Muffler | |
| CN205686069U (en) | A kind of improvement automobile steel wheel hub | |
| CN201815668U (en) | Inner material receiving assembly for numerically controlled lathe | |
| CN210187845U (en) | Line body belt cleaning device is used in processing of enameled aluminum wire raw and other materials | |
| CN217604345U (en) | Rust-proof water tank of water heater | |
| CN209255335U (en) | A kind of jetting machine with water meter | |
| CN209406947U (en) | A kind of jetting machine | |
| CN201557266U (en) | Novel electrically heated pad | |
| CN220905192U (en) | Clothes hanger stationary blade and electric motor car | |
| CN201635550U (en) | Hinge for bicycle basket with cover |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20150430 |
|
| EXPY | Termination of patent right or utility model |