CN103372683B - For the transmission mechanism of reciprocating saw - Google Patents
For the transmission mechanism of reciprocating saw Download PDFInfo
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- CN103372683B CN103372683B CN201210128890.5A CN201210128890A CN103372683B CN 103372683 B CN103372683 B CN 103372683B CN 201210128890 A CN201210128890 A CN 201210128890A CN 103372683 B CN103372683 B CN 103372683B
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- Prior art keywords
- tilting member
- eccentric wheel
- reciprocating
- reciprocating lever
- reciprocal movement
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Abstract
The invention discloses a kind of transmission mechanism for reciprocating saw, including：Drive mechanism；The eccentric wheel that driven-mechanism drives and rotates；The reciprocating lever of linear reciprocal movement is produced by eccentric wheel drive；Characterized in that, transmission mechanism also includes that one can be by the tilting member of above-mentioned eccentric wheel drive, tilting member can drive above-mentioned reciprocating lever to be moved along the direction intersected with the straight reciprocating motion when by eccentric wheel drive.The transmission mechanism can be implemented in the small-sized reciprocating saw of highly compact, and corresponding mechanical structure is also relatively simple, and cause that reciprocating saw is reliability and durability, and can produce controllable wobbling action.
Description
Technical field
The present invention relates to a kind of transmission mechanism for reciprocating saw, it can make the saw blade of reciprocating saw produce wobbling action.
Background technology
Existing by motor-driven electric reciprocating saw, the rotation of motor passes through so-called " crank mechanism (SCOTCH
YOKE the straight reciprocating motion of reciprocating lever) " is converted into, the crank mechanism generally has two kinds of patterns shown in Fig. 1 and Fig. 2.
In the crank driving mechanism shown in Fig. 1, motor driving bevel gear 3 rotates it, and bevel gear 3 nibbles with bevel gear 2
Close, so that bevel gear 2 is rotated around pivot center 4.Cam pin 5 is eccentrically mounted in relative to the pivot center 4 of bevel gear 2
On bevel gear 2, and slideably it is inlaid in the chute 7 of the end of reciprocating lever 1.Reciprocating lever 1 is by suit guiding thereon
Mechanism constrains and is only capable of producing linear motion.So as to when bevel gear 3 drives bevel gear 2 continuously to rotate, reciprocating lever 1 is in bias
Produced in the presence of pin 5 and move back and forth 6, and then the saw blade on the other end of reciprocating lever 1 can be driven to produce reciprocal sawing
Motion.In the crank driving mechanism, the pivot center of bevel gear 3 is orthogonal with the pivot center 4 of bevel gear 2.
In the crank driving mechanism shown in Fig. 2, the pivot center of the gear 23 for schematically showing and the rotation of gear 22
Axis 24 is parallel, but its operation principle is identical with the crank driving mechanism shown in Fig. 1.
According to practical experience, in addition to straight reciprocating motion as described above, the saw blade of reciprocating saw is in sawing depth side
To the wobbling action on B (sawing plane) to saw cutting speed important.
U.S. Patent application US5392519A discloses a kind of reciprocating saw, and it has flat with the pivot center 38 of bevel gear 32
Capable wobbling action 37, as shown in Figure 3.The wobbling action 37 is produced by the eccentric cylinder 35 on bevel gear 32, the off-centre operation
The central axis of cylinder 35 opens a segment distance with the parallel, spaced-apart of pivot center 38 of bevel gear 32.Specifically, eccentric cylinder
Body 35 coordinates with the first end (lower end in Fig. 3) of bar 36, and the other end (upper end in Fig. 3) of bar 36 is hinged to reciprocating lever 1
Rear end.When reciprocating saw works, the first end of the meeting catch bar 36 of eccentric cylinder 35, and then reciprocating lever 1 can be promoted along swing side
Swung to 37.
European patent application EP0561473A1 discloses another reciprocating saw, as shown in figure 4, it has and bevel gear 42
The vertical swaying direction 48 of pivot center 44.Specifically, the reciprocating saw includes the eccentric cylinder being arranged on bevel gear 42
Body 46, reciprocating lever 1 has sliding groove structure 47, and eccentric cylinder 46 is slideably inlaid in the sliding groove structure 47.Work as bevel gear
42 around pivot center 44 rotate when, the sliding groove structure 47 of reciprocating lever 1 is promoted by eccentric cylinder 46 and makes reciprocating lever 1 along swing
Direction 48 swings.
As described above, it is known that the above-mentioned implementation method of the wobbling action of existing reciprocating saw has following deficiency：
1) swing mechanism is difficult to use in small-sized reciprocating saw or Portable type reciprocating saw.
2) in this reciprocating saw shown in Fig. 4, when the cam pin 45 being eccentrically mounted on bevel gear 42 drives back and forth
During 1 straight reciprocating motion of bar, big friction can be produced, or even mechanism blockage can be made.If produced due to abrasion it is larger between
During gap, then amplitude of fluctuation can be reduced.
The content of the invention
It is therefore an object of the present invention to provide a kind of transmission mechanism for reciprocating saw that can overcome disadvantages mentioned above.
Above-mentioned purpose realizes that the transmission mechanism includes by the transmission mechanism that such a is used for reciprocating saw：Driving machine
Structure；The eccentric wheel that driven-mechanism drives and rotates；The reciprocating lever of linear reciprocal movement is produced by eccentric wheel drive；Its feature exists
In transmission mechanism can also be by the tilting member of above-mentioned eccentric wheel drive including one, and tilting member can drive when by eccentric wheel drive
Dynamic above-mentioned reciprocating lever is moved along the direction intersected with the straight reciprocating motion.
Preferably, the tilting member has the first arm and the second arm, and second arm interacts with eccentric wheel, and makes
Tilting member is deflected, so that, drive first arm to be interacted with reciprocating lever, make reciprocating lever edge and above-mentioned linear reciprocal movement
Intersecting direction motion.This causes to make tilting member with more simple structure type.
Preferably, the reciprocating saw includes the clamshell for cover lid drive mechanism and eccentric wheel, and the tilting member can turn
It is arranged on dynamicly on the clamshell.So, tilting member can be caused to be arranged to more compact, reliable, and is easy to assembling.
Preferably, the reciprocating saw includes the clamshell for cover lid drive mechanism and eccentric wheel, and the clamshell is provided with groove,
The tilting member is at least partly pivotally inlaid in the groove.This can further simplify the installation of tilting member.
Preferably, one end of the reciprocating lever is provided with chute, and chute extends along the direction vertical with above-mentioned linear direction, institute
Eccentric wheel is stated slideably to be inlaid in the chute, in the rotation process of the eccentric wheel, a part for the eccentric wheel
Can be stretched out from the chute.In this way, tilting member can be made more easily to be interacted with eccentric wheel.
Preferably, second arm have the side for reaching the chute for the touch part that is interacted with eccentric wheel
Point.Which further simplifies the structure of tilting member.
Preferably, second arm has the tangential contact site of gradual change for the shake-up part that is interacted with eccentric wheel,
Percussion during reducing eccentric wheel with the shake-up part contact.In this way, the second arm can be made with eccentric wheel
Contact is more steady, it is to avoid intense contact, so as to improve the reliability of wobbling action.
Preferably, the eccentric wheel is provided with the rolling member for reducing friction；And/or the tilting member and reciprocating lever
The position of interaction is provided with the rolling member for reducing friction.Sliding friction can be converted to rolling friction by this, so as to reduce
Contact friction.
Preferably, the protuberance for being interacted with tilting member, and first arm are provided with the top of the chute
It is arranged on the chute top.By this arrangement, the implementation method of wobbling action can be made more simple, reliable.
Preferably, the reciprocating saw also has the resetting-mechanism for tilting member, and the resetting-mechanism makes the swing
Part is held in a predetermined position place when not interacted with eccentric wheel.So as to may be such that the tilting member can put down all the time
Surely, reliably contacted with eccentric wheel.
Preferably, guiding the reciprocating lever enables the bushing of its straight reciprocating motion to make reciprocating lever along past with the straight line
The intersecting direction motion of multiple motion.This provides a kind of reliable wobbling action implementation.
Of the invention beneficial has the technical effect that：
1) tilting member is sufficiently compact and can implement in the small-sized reciprocating saw of highly compact.
2) the drive envoy of wobbling action is eccentric wheel, and the eccentric wheel also drives reciprocating lever to move back and forth simultaneously, so that, phase
The mechanical mechanism answered is more simple compared with prior art.
3) contact site of tilting member can be rolling friction, hence in so that tilting member so cause reciprocating saw can
By durable.
4) by adjusting or changing tilting member, it is convenient to amplitude and the duration of wobbling action are adjusted, so that can
Realize different swing characteristics.
Brief description of the drawings
Below, the present invention will be more fully described referring to accompanying drawing, by the detailed description, those skilled in the art can
To more fully understand the features and advantages of the present invention.Accompanying drawing includes：
Fig. 1 shows the first pattern of the crank driving mechanism in reciprocating saw, wherein bevel gear and umbrella tooth with stereogram
The pivot center of wheel is orthogonal.
Fig. 2 shows second pattern of the crank driving mechanism in reciprocating saw with stereogram, wherein the rotation of two gears
Axis is parallel.
Fig. 3 shows a kind of reciprocating saw according to prior art with sectional view.
Fig. 4 shows another reciprocating saw according to prior art with three-dimensional exploded view.
Fig. 5 shows the basic structure of the reciprocating saw of an exemplary embodiment of the invention with sectional view.
Fig. 6 shows some structure members of the reciprocating saw shown in Fig. 5 with exploded view.
Specific embodiment
Below, one exemplary embodiment of the present invention will be described in detail referring to Fig. 5-6, so as to more fully understand
General principle of the invention.
Fig. 5 shows the schematic cross sectional views of the small-sized reciprocating saw 100 of an exemplary embodiment of the invention.Should
Small-sized reciprocating saw 100 includes that by motor-driven bevel gear 103 bevel gear 103 is meshed with bevel gear 102 and can drive umbrella
Gear 102 rotates.Cam pin 111 is abreast arranged on bevel gear 102 with the pivot center of bevel gear 102.This is small-sized reciprocal
Saw 100 also has reciprocating lever 101, and one end of the reciprocating lever 101 is used to be connected with saw blade (not shown), so that saw blade is produced accordingly
Straight reciprocating motion.The other end of reciprocating lever 101 is provided with sliding groove structure 117.The sliding groove structure 117 has to be used for and bevel gear
The chute 118 that cam pin 111 on 102 coordinates.Reciprocating lever 101 is arranged in bushing 107, and by bushing 107 guiding and only
Can be moved back and forth in the cathetus of bushing 107.Therefore, when motor is rotated in the clockwise direction bevel gear 102 by bevel gear 103
When (as shown in Figure 5), cam pin 111 also can concomitant rotation, and then by sliding groove structure 117 make reciprocating lever 101 produce straight line it is past
115 are moved again.
As described above, the saw blade of reciprocating saw 100 is in addition to straight reciprocating motion, (cut in the depth direction of cutting
Plane) on to produce certain wobbling action 116 (referring to Fig. 5) be also unusual meaning, can for example significantly improve cutting speed.
The wobbling action 116 is produced by making reciprocating lever 101 be swung relative to the housing of reciprocating saw 100 together with bushing 107
, this point will be specifically described below.
In the exemplary embodiment shown in Fig. 6, in order to produce wobbling action 116, reciprocating saw 100 also to include tilting member
108.In one exemplary embodiment, the tilting member 108 is rotatably mounted to towards cam pin 111 by pin 106
In first gear cover portion point 105.Tilting member 108 has the first arm 181 and the second arm 182 respectively positioned at the both sides of pin 106.
Interval in setting during cam pin 111 is together rotated with bevel gear 102, the outer peripheral portion of cam pin 111 can partly reveal
Go out chute 118, i.e. the length of chute 118 causes that the outer peripheral portion of cam pin 111 can partly expose in rotation process.Due to
The constraint guiding function of bushing 107, in rotation process, cam pin 111 is to expose one from two opening ends of chute 118
Point, without completely disengaging from chute 118.As shown in figure 5, when cam pin 111 rotates (in Figure 5, edge with bevel gear 102
When rotationally clockwise), cam pin 111 can partly expose in rotation process and tangentially contact the of tilting member 108
The shake-up part 183 for extending downwardly of two arms 182.Under this effect, can cause that tilting member 108 is produced around pin 106 inverse
Hour hands are rotated.So as to, first arm 181 of tilting member 108 promotes the protuberance 109 at the top for being arranged on sliding groove structure 117, with
Reciprocating lever 101 is set to swing small angle and produce wobbling action 116.
It is pointed out that in the exemplary embodiment shown in Fig. 6, reciprocating lever 101 is provided with the elongated slot of insertion
119, the second gear cover portion point 104 of reciprocating saw 100 is provided with the pin 120 coordinated with the elongated slot 119, and is set on bushing 107
There is the through hole 121 through whole bushing 107.In the assembled state, bushing 107 is sleeved on reciprocating lever 101, and wears pin 120
Through hole 121 and elongated slot 19 are crossed, so as to only allow reciprocating lever 101 to be moved back and forth in the cathetus of bushing 107.And, bushing 107 is again
Surrounded by first, second gear cover part 105 and 104.Under the driving of above-mentioned tilting member 108, reciprocating lever 101 is together with lining
Set 107 can produce the wobbling action of certain amplitude in first, second gear cover part 105 and 104 together.
When bevel gear 102 is continuously rotated, per revolution, tilting member 108 can be promoted once by cam pin 111, from
And, reciprocating lever 101 can be made a wobbling action is produced in a reciprocating stroke.Obviously, the amplitude of wobbling action and it is lasting when
Between can be by the first arm 181 of tilting member 108 and/or the shape of the second arm 182 (more particularly, it touches part 183)
And structure control.
And, as needed, multiple shake-up parts 183 can be also set in the case where structure space is allowed or set multiple
Tilting member 108, so as in a reciprocating stroke reciprocating lever 101 can be made to produce multiple wobbling action.
According to an exemplary embodiment, as shown in figure 5, the shake-up part 183 of the second arm 182 can be made having for bias
The tangential grading structure of pin 111, so that cam pin 111 can smoothly contact shake-up part 183, it is therefore an objective to reduce cam pin
The 111 issuable impacts when starting to contact with shake-up part 183, so that, can prevent from damaging structure and produce noise.
In order to reduce friction, rolling member, a such as bearing can be set with cam pin 111, as shown in fig. 6, that will slide
Dynamic friction is transformed to rolling friction.In this case, cam pin 111 actually includes rolling member, the periphery of rolling member and cunning
The wall of groove 118 is in rolling contact.
Similarly, the position that can be also contacted with protuberance 109 on the first arm 181 sets a rolling member, will
Sliding friction between first arm 181 and protuberance 109 of tilting member 108 is converted to rolling friction, so that, machinery can be improved
The durability of mechanism.
One exemplary embodiment of the present invention is described in detail above with reference to Fig. 5 and 6.Those skilled in the art passes through
The description understands that general principle of the invention is：By setting a tilting member 108, the rotation of cam pin 111 is set not only may be used
To be converted to the straight reciprocating motion of reciprocating lever 101, but also can be exchanged into the wobbling action of reciprocating lever 101.Obviously, at this
Under general principle, the present invention can be implemented with numerous embodiments, and be not limited to above-described embodiment.Below, just to it is possible its
He is described implementation method.
For protuberance 109, it is it is not necessary to be arranged on sliding groove structure 117, but can also be arranged on reciprocating lever
At 101 other any correct positions, as long as because protuberance 109 is arranged on can make tilting member on reciprocating lever 101
108 drive reciprocating levers 101 swing.Obviously, although protuberance 109 is herein tabular, but it is also possible in any other form, only
Wanting it can correctly interact with tilting member 108.
For tilting member 108, it as described above by pin 106 except that can be installed in rotation on first gear cover
Beyond on part 105, a groove can also be constructed in first gear cover portion point 105, tilting member 108 is inlaid in described
In groove, a position when tilting member 108, when for example the second arm 182 is promoted by cam pin 111, tilting member 108 it is another
Individual position, such as the first arm 181 can be produced under the guiding function of groove to the proper site on reciprocating lever 101, such as protuberance 109
Raw impetus, so that reciprocating lever 101 produces wobbling action.As long as it will be obvious to those skilled in the art that swing part
The rotation of cam pin 111 can be at least partially converted into part 108 wobbling action of reciprocating lever 101.Under this principle,
Also tilting member 108 can be assembled on other any suitable parts, rather than is only restricted in installed in first gear cover portion point
On 105.
As described above, the second arm 182 of tilting member 108 touches part 183 from the contacts side surfaces of chute 118 from chute
The cam pin 111 that 118 parts are exposed, this needs the cam pin 111 can to expose from the part of chute 118 in rotation process, however,
Also cam pin 111 can be made, and part is located in chute 118 thereon in the mounted state, and it is adjacent to the latter half of bevel gear 102
It is always positioned at outside chute 118, in this case, the lower half of the contact cam pin 111 of the second arm 182 of tilting member 108 can be made
Part.Under certain conditions, or even shake-up part 183 can be made to stretch into chute 118 contacted with cam pin 111.That is, not
How is pipe, as long as cam pin 111 can be made to be interacted with second arm 182 of tilting member 108 in rotation process.
And, it is also contemplated that for tilting member 108 configures a resetting-mechanism (not shown), the resetting-mechanism can make swing
Second arm 182 of part 108 makes tilting member 108 return to a suitable initial bit at the end of being interacted with cam pin 111
Put, in the initial position, cam pin 111 can correctly and smoothly connect in next circle rotation process with the generation of the second arm 182
Touch.By setting such a resetting-mechanism, can make tilting member 108 with the interaction of cam pin on the horizon 111
Before be held in place by place such that it is able to ensure that cam pin 111 reliably interacts all the time with tilting member 108.As
One example, the resetting-mechanism can be spring.
Claims (20)
1. a kind of transmission mechanism for reciprocating saw, including：
Drive mechanism；
The eccentric wheel that driven-mechanism drives and rotates；
The reciprocating lever of linear reciprocal movement is produced by eccentric wheel drive；
Characterized in that, transmission mechanism also includes a tilting member that can be directly driven by above-mentioned eccentric wheel, tilting member is in quilt
During eccentric wheel drive, above-mentioned reciprocating lever can be driven to be moved along the direction intersected with the linear reciprocal movement.
2. transmission mechanism as claimed in claim 1, it is characterised in that
The tilting member has the first arm and the second arm, and second arm interacts with eccentric wheel, and makes tilting member inclined
Turn, so that, drive first arm to be interacted with reciprocating lever, make reciprocating lever along the direction intersected with above-mentioned linear reciprocal movement
Motion.
3. transmission mechanism as claimed in claim 1 or 2, it is characterised in that
The reciprocating saw includes the clamshell for cover lid drive mechanism and eccentric wheel, and the tilting member is rotatably arranged in institute
State on clamshell.
4. transmission mechanism as claimed in claim 1 or 2, it is characterised in that
The reciprocating saw includes the clamshell for cover lid drive mechanism and eccentric wheel, and the clamshell is provided with groove, the swing part
Part is at least partly pivotally inlaid in the groove.
5. transmission mechanism as claimed in claim 2, it is characterised in that
One end of the reciprocating lever is provided with chute, and chute extends along the direction vertical with the direction of above-mentioned linear reciprocal movement, institute
Eccentric wheel is stated slideably to be inlaid in the chute, in the rotation process of the eccentric wheel, a part for the eccentric wheel
Can be stretched out from the chute.
6. transmission mechanism as claimed in claim 5, it is characterised in that
Second arm have the side for reaching the chute for the shake-up part that is interacted with eccentric wheel.
7. transmission mechanism as claimed in claim 6, it is characterised in that
Second arm for the shake-up part that is interacted with eccentric wheel has the tangential contact site of gradual change, to reduce eccentric wheel
Percussion during with the shake-up part contact.
8. the transmission mechanism as described in any in claim 1-2,5-7, it is characterised in that
The eccentric wheel is provided with the rolling member for reducing friction；And/or
The position interacted with reciprocating lever of the tilting member is provided with the rolling member for reducing friction.
9. transmission mechanism as claimed in claim 3, it is characterised in that
The eccentric wheel is provided with the rolling member for reducing friction；And/or
The position interacted with reciprocating lever of the tilting member is provided with the rolling member for reducing friction.
10. transmission mechanism as claimed in claim 4, it is characterised in that
The eccentric wheel is provided with the rolling member for reducing friction；And/or
The position interacted with reciprocating lever of the tilting member is provided with the rolling member for reducing friction.
11. transmission mechanisms as claimed in claim 7, it is characterised in that
The protuberance for being interacted with tilting member is provided with the top of the chute, and first arm is arranged on the cunning
Groove top.
12. transmission mechanism as described in any in claim 1-2,5-7,9-11, it is characterised in that
The reciprocating saw also have for tilting member resetting-mechanism, the resetting-mechanism make the tilting member not with partially
Heart wheel is held in a predetermined position place when interacting.
13. transmission mechanisms as claimed in claim 3, it is characterised in that
The reciprocating saw also have for tilting member resetting-mechanism, the resetting-mechanism make the tilting member not with partially
Heart wheel is held in a predetermined position place when interacting.
14. transmission mechanisms as claimed in claim 4, it is characterised in that
The reciprocating saw also have for tilting member resetting-mechanism, the resetting-mechanism make the tilting member not with partially
Heart wheel is held in a predetermined position place when interacting.
15. transmission mechanisms as claimed in claim 8, it is characterised in that
The reciprocating saw also have for tilting member resetting-mechanism, the resetting-mechanism make the tilting member not with partially
Heart wheel is held in a predetermined position place when interacting.
16. transmission mechanism as described in any in claim 1-2,5-7,9-11,13-15, it is characterised in that
Guiding the reciprocating lever enables the bushing of its linear reciprocal movement reciprocating lever edge is intersected with the linear reciprocal movement
Direction motion.
17. transmission mechanisms as claimed in claim 3, it is characterised in that
Guiding the reciprocating lever enables the bushing of its linear reciprocal movement reciprocating lever edge is intersected with the linear reciprocal movement
Direction motion.
18. transmission mechanisms as claimed in claim 4, it is characterised in that
Guiding the reciprocating lever enables the bushing of its linear reciprocal movement reciprocating lever edge is intersected with the linear reciprocal movement
Direction motion.
19. transmission mechanisms as claimed in claim 8, it is characterised in that
Guiding the reciprocating lever enables the bushing of its linear reciprocal movement reciprocating lever edge is intersected with the linear reciprocal movement
Direction motion.
20. transmission mechanisms as claimed in claim 12, it is characterised in that
Guiding the reciprocating lever enables the bushing of its linear reciprocal movement reciprocating lever edge is intersected with the linear reciprocal movement
Direction motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210128890.5A CN103372683B (en) | 2012-04-27 | 2012-04-27 | For the transmission mechanism of reciprocating saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210128890.5A CN103372683B (en) | 2012-04-27 | 2012-04-27 | For the transmission mechanism of reciprocating saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103372683A CN103372683A (en) | 2013-10-30 |
| CN103372683B true CN103372683B (en) | 2017-05-31 |
Family
ID=49458860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210128890.5A Expired - Fee Related CN103372683B (en) | 2012-04-27 | 2012-04-27 | For the transmission mechanism of reciprocating saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103372683B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107838880B (en) * | 2016-09-21 | 2023-11-07 | 苏州宝时得电动工具有限公司 | Reciprocating power tool |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2369805Y (en) * | 1999-05-12 | 2000-03-22 | 苏州塑料九厂 | Curve saw driving and swing mechanism |
| GB2393934A (en) * | 2002-10-07 | 2004-04-14 | Black & Decker Inc | A reciprocating saw with two eccentrics |
| US20050016001A1 (en) * | 2003-06-24 | 2005-01-27 | Milwaukee Electric Tool Corporation | Drive mechanism and power tool |
| CN2853254Y (en) * | 2005-11-25 | 2007-01-03 | 南京德朔实业有限公司 | Reciprocating saw |
| CN101658957B (en) * | 2008-08-27 | 2013-06-05 | 苏州宝时得电动工具有限公司 | Reciprocating cutter |
-
2012
- 2012-04-27 CN CN201210128890.5A patent/CN103372683B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN103372683A (en) | 2013-10-30 |
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Granted publication date: 20170531 Termination date: 20200427 |