CN100491082C - Three-function light electric hammer - Google Patents
Three-function light electric hammer Download PDFInfo
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- CN100491082C CN100491082C CNB2004100842754A CN200410084275A CN100491082C CN 100491082 C CN100491082 C CN 100491082C CN B2004100842754 A CNB2004100842754 A CN B2004100842754A CN 200410084275 A CN200410084275 A CN 200410084275A CN 100491082 C CN100491082 C CN 100491082C
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- clutch discs
- electric hammer
- rod end
- pillow block
- disk
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Abstract
The present invention relates to a three-function light electric hammer, which belongs to the technical field of electrical tools. A second on-off disk is arranged between a pillow block and a penduluThe present invention relates to a three-function light electric hammer, belonging to the field of power tool technology. It is formed from the following several components: shaft stand, pendulum bearm bearing, the end of the second on-off disk close to the pillow block is provided with a plurality of second plugs, and the second plugs can plug into notches of the pillow block; the other end of thing, first clutch disk, second clutch disk, knob, eccentric pin shaft, first restoring spring and second restoring spring. Said invention also provides the concrete structure of every component and the second on-off disk can make axial movement relative to a rod end pendulum bearing, and keeps the transmission fit with the rod end pendulum bearing; a turn knob is provided with an eccentric pin shaeir connection mode. Said electric hammer has three functions of ''drilling'', ''impacting'' and drilling while ''impacting''. ft, the eccentric pin shaft can respectively shift a first on-off disk and the second on-off disk to move in axial direction, and is arranged between the first on-off disk and the second on-off disk; the rod end pendulum bearing and the second on-off disk are provided with reset springs which can push the second on-off disk to the pillow block. The present invention solves the problems that the prior art adopts two turn knobs to switch the three functions of 'drilling', 'impacting', 'drilling and impacting', and the operation is fussy; or a turn knob structure used for controlling an electric hammer by single turn knob is complicated, the assembly and the maintenance are not convenient, the control is unreliable, faults are easy to occur, etc.
Description
Technical field
The present invention relates to a kind of novel three-function light electric hammer, belong to the technical field of electric tool.
Background technology
Electric hammer is used comparatively extensive in the bore operation of body of wall, often need between " brill ", " impact ", " not only boring but also impact " three functions, switch in the operation, usually adopt two knobs to cooperate to reach the purpose of switching between three functions in the prior art, control is comparatively loaded down with trivial details in operating process.
So there is the people to propose a kind of multifunctional electric hammer by name (document number: patent application CN2426395), it comprises housing, transmission shaft component, impacting shaft assembly, knob, slide plate, impacting shaft holder, slide plate is arranged in the vertical channel of impacting shaft holder, the slide plate upper end is provided with boss and the side guide that promotes clutch and the knob pin-and-hole of controlling three kinds of states that can promote balladeur train, the cam pin of knob is inserted in the pin-and-hole, and the front end of impacting shaft assembly is with back-moving spring.The structure that three kinds of functions of the control electric hammer that this technical scheme adopts are switched is comparatively complicated, assembling and inconvenient maintenance, and it stirs the action that is arranged on the boss on the slide plate and controls the electric hammer brill indirectly by knob, and it is unreliable to control, and breaks down easily.
Existing three-function light electric hammer is shut down or one-shot when hitting state when switching to from " impact ", " not only boring but also impact " two states, because the action that the action of inertia electric hammer bores often needs to continue just can stop after operation a period of time, therefore controls coarse problem with regard to the work that exists electric hammer; And single electric hammer is in one-shot when hitting state, and the drill bit of electric hammer may rotate, and has influenced the efficient and the stability of electric hammer percussion action.
Summary of the invention
The invention solves prior art adopts two knobs to switch " brill ", " impact ", " not only boring but also impact " three functions, operate comparatively loaded down with trivial details, or the knob structure of single knob control electric hammer is comparatively complicated, assembling and inconvenient maintenance, it is unreliable to control, problem such as break down easily, provide a kind of single knob to switch " brill ", " impact ", " not only boring but also impact " three functions, simple to operate, the knob control structure is simple, assembling and easy to maintenance, control is reliable, the novel three-function light electric hammer that is difficult for breaking down.
The present invention has also solved the work control inaccuracy of prior art electric hammer simultaneously, and the electric hammer one-shot hits the rotation of drill bit in the action has influenced problems such as the efficient of electric hammer percussion action and stability.
Above-mentioned technical purpose of the present invention mainly solves by the following technical programs: comprise front end component and back-end component, front end component is the transmission control part branch, back-end component is power section, front end component comprises front end shell, transmission shaft component, impacting shaft assembly, knob, impacting shaft holder, impacting shaft assembly and transmission shaft component are installed on the impacting shaft holder, and diaxon is at a distance of certain operating distance; The main shaft that is driven by power section is provided with the rod end oscillation bearing of impacting shaft assembly and the travelling gear of transmission shaft component, main shaft between between rod end oscillation bearing and travelling gear is provided with pillow block, described pillow block is provided with some axial notches, be installed with some first plugs that insert described pillow block groove near pillow block one end on the described travelling gear, be connected with first clutch discs on this travelling gear, be provided with first back-moving spring that this travelling gear can be pushed to pillow block between its other end and front end shell, be provided with second clutch discs between described pillow block and oscillation bearing, this second clutch discs is provided with some second plugs that insert described pillow block groove near the pillow block end, its other end can move axially and keeps cooperating with the transmission of described rod end oscillation bearing with respect to described rod end oscillation bearing, described knob is provided with eccentric pin shaft, this eccentric pin shaft can stir respectively first clutch discs and second clutch discs move axially between between first clutch discs and second clutch discs, the described rod end oscillation bearing and second clutch discs will be provided with second back-moving spring that second clutch discs can be pushed to described pillow block.Wherein, can drive eccentric pin shaft by turning knob is axial rotation around the center line of knob, being rotated further knob when eccentric pin shaft and first clutch discs offset can break away from first plug of first clutch discs and the groove of pillow block, travelling gear and main shaft will relatively rotate, at this moment, second plug of second clutch discs is positioned at the groove of pillow block, and the rod end oscillation bearing rotates with main shaft, and electric hammer is in one-shot and hits duty; When eccentric pin shaft and second clutch discs offset, be rotated further knob and can manage the groove that second plug that close dish pushes away pillow block second, main shaft and rod end oscillation bearing relatively rotate, this moment, first plug of first clutch discs was positioned at the pillow block groove, travelling gear rotates with main shaft, and electric hammer is in single driller and makes state; When eccentric pin shaft neither offsets with first clutch discs, when not offseting with second clutch discs yet, first plug of first clutch discs and second plug of second clutch discs all are positioned at the groove of pillow block, travelling gear all rotates with main shaft with the rod end oscillation bearing, and electric hammer is in and not only bores but also impact duty.This controlling organization is three kinds of duties of changeable electric hammer by single eccentric pin shaft only, structure and simple to operate, control is reliable, action accurately, assembling and easy to maintenance is not prone to the fault of controlling organization.
As preferably, the circumference of described first clutch discs is provided with some denticles, and described front end shell is provided with some stop denticles, this stop denticle when first plug breaks away from described groove can with described denticle engagement; Described denticle is located on the disk body, and this disk body axially is located on the dead axle un-rotatably, and the axle head dish of described disk body one end and dead axle offsets, and the free end of the other end and pushing top spring offsets.Wherein, hit under the state when electric hammer is in one-shot, denticle and the engagement of stop denticle can stop the rotation of drill bit, have guaranteed the accuracy of electric hammer duty control, have improved the stability and the efficient of work; When electric hammer from not only boring but also impacting or single state that bores when switching to one-shot and hitting or shut down, the stop denticle can mesh with denticle rapidly, and electric hammer is stopped operating, and has improved the accuracy of controlling.Pushing top spring can be pushed denticle to the stop denticle, produces denticle and clamp-ons potential energy in the breach between the stop denticle, and when the notch alignment between denticle and stop denticle, both are just engageable and electric hammer is stopped operating.
As preferably, described rod end oscillation bearing is provided with some slots near the second clutch discs end, the close rod end swinging axle socket end of described second clutch discs is provided with the 3rd plug of the described slot of some corresponding insertions, and the 3rd plug can move axially with respect to the rod end oscillation bearing but remain part in described slot.Wherein, second clutch discs keeps drive state with the rod end oscillation bearing all the time, second plug of second clutch discs can or break away from groove with the groove fit of pillow block under the promotion of eccentric pin shaft, both switch under transmission and not transmission two states, thereby whether the rotation of control rod end oscillation bearing, promptly controls the impact of electric hammer and the state that does not impact.
As preferably, described second clutch discs is arranged with the shift fork cover outward, and the top of described eccentric pin shaft is higher than the lower edge of described first clutch discs and shift fork cover.Wherein, sheathed shift fork cover can reduce the volume of the second clutch discs body outside second clutch discs, thereby reduce the overall weight of electric hammer, and to be higher than the lower edge of first clutch discs and shift fork cover be in order to guarantee that eccentric pin shaft can be stirred first clutch discs and second clutch discs moves axially on the top of eccentric pin shaft, when on first clutch discs denticle being set, then the top of eccentric pin shaft need be higher than the circumference at root circle place.
As preferably, described first back-moving spring is the tower spring, and the small end of this tower spring and described travelling gear offset, and its big end offsets with the block plate that is fixed on the main shaft.Wherein, the tower spring can reduce the distance of the first action of reset spring force direction and main-shaft axis on the one hand, thereby makes the effect of spring more concentrated; On the other hand the end face of tower spring contact with the travelling gear end face tightr, thereby guarantee the axis of travelling gear and the depth of parallelism of main-shaft axis, improved the electric hammer traveling comfort.
As preferably, described eccentric pin shaft is and the vertical cylindrical structure in described knob plane that itself and knob are injected into one.Wherein, eccentric pin shaft and knob are injected into that one makes both combine more reliably, prolonged the service life of electric hammer integral body.
As preferably, described rod end oscillation bearing is provided with cannelure near the second clutch discs end, and described second back-moving spring partly places in this cannelure.Wherein, second back-moving spring, one end is placed in the cannelure, can reduce rocking of second back-moving spring, improved job stability.
Therefore, the present invention has single knob and switches " brill ", " impact ", " not only boring but also impact " three functions, and simple to operate, the knob control structure is simple, assembling and easy to maintenance, control is reliable, is difficult for breaking down, duty control accurately, stability is high, is beneficial to characteristics such as increase work efficiency.Wherein, can drive eccentric pin shaft by turning knob is axial rotation around the center line of knob, being rotated further knob when eccentric pin shaft and first clutch discs offset can break away from first plug of first clutch discs and the groove of pillow block, travelling gear and main shaft will relatively rotate, at this moment, second plug of second clutch discs is positioned at the groove of pillow block, and the rod end oscillation bearing rotates with main shaft, and electric hammer is in one-shot and hits duty; When eccentric pin shaft and second clutch discs offset, be rotated further knob and can manage the groove that second plug that close dish pushes away pillow block second, main shaft and rod end oscillation bearing relatively rotate, this moment, first plug of first clutch discs was positioned at the pillow block groove, travelling gear rotates with main shaft, and electric hammer is in single driller and makes state; When eccentric pin shaft neither offsets with first clutch discs, when not offseting with second clutch discs yet, first plug of first clutch discs and second plug of second clutch discs all are positioned at the groove of pillow block, travelling gear all rotates with main shaft with the rod end oscillation bearing, and electric hammer is in and not only bores but also impact duty.This controlling organization is three kinds of duties of changeable electric hammer by single eccentric pin shaft only, structure and simple to operate, control is reliable, action accurately, assembling and easy to maintenance is not prone to the fault of controlling organization.Wherein, hit under the state when electric hammer is in one-shot, denticle and the engagement of stop denticle can stop the rotation of drill bit, have guaranteed the accuracy of electric hammer duty control, have improved the stability and the efficient of work; When electric hammer from not only boring but also impacting or single state that bores when switching to one-shot and hitting or shut down, the stop denticle can mesh with denticle rapidly, and electric hammer is stopped operating, and has improved the accuracy of controlling.Pushing top spring can be pushed denticle to the stop denticle, produces denticle and clamp-ons potential energy in the breach between the stop denticle, and when the notch alignment between denticle and stop denticle, both are just engageable and electric hammer is stopped operating.Wherein, second clutch discs keeps drive state with the rod end oscillation bearing all the time, second plug of second clutch discs can or break away from groove with the groove fit of pillow block under the promotion of eccentric pin shaft, both switch under transmission and not transmission two states, thereby whether the rotation of control rod end oscillation bearing, promptly controls the impact of electric hammer and the state that does not impact.Wherein, close in second reason that sheathed shift fork cover can reduce the volume of the second clutch discs body outside the dish, thereby reduce the overall weight of electric hammer, and to be higher than the lower edge of first clutch discs and shift fork cover be in order to guarantee that eccentric pin shaft can be stirred first clutch discs and second clutch discs moves axially on the top of eccentric pin shaft, when on first clutch discs denticle being set, then the top of eccentric pin shaft need be higher than the circumference at root circle place.Wherein, the tower spring can reduce the distance of the first action of reset spring force direction and main-shaft axis on the one hand, thereby makes the effect of spring more concentrated; On the other hand the end face of tower spring contact with the travelling gear end face tightr, thereby guarantee the axis of travelling gear and the depth of parallelism of main-shaft axis, improved the electric hammer traveling comfort.Wherein, eccentric pin shaft and knob are injected into that one makes both combine more reliably, prolonged the service life of electric hammer integral body.
Description of drawings
Accompanying drawing 1 is that the present invention is in and not only bores but also impact a kind of structural representation of duty;
Accompanying drawing 2 is a kind of structural representations that one-shot of the present invention hits duty;
Accompanying drawing 3 is a kind of structural representations that the single driller of the present invention makes state;
Accompanying drawing 4 is stop denticle of the present invention and denticle engagement, and electric hammer is in a kind of structural representation that one-shot hits duty;
Accompanying drawing 5 is stop denticle separating tooth body of the present invention engagements, and electric hammer is in and not only bores but also impact a kind of structural representation of duty;
Accompanying drawing 6 is stop denticle separating tooth body engagements of the present invention, and electric hammer is in a kind of structural representation that single driller makes state;
Accompanying drawing 7 is a kind of structural representations of main shaft of the present invention;
Accompanying drawing 8 is A-A cross sectional view of accompanying drawing 7;
Accompanying drawing 9 is left views of travelling gear of the present invention;
Accompanying drawing 10 is right views of travelling gear of the present invention;
Accompanying drawing 11 is B-B cross section sectional views of accompanying drawing 9;
Accompanying drawing 12 is right views of the present invention's second clutch discs;
Accompanying drawing 13 is left views of the present invention's second clutch discs;
Accompanying drawing 14 is C-C cross sectional view of accompanying drawing 12;
Accompanying drawing 15 is left views of accompanying drawing 12 of the present invention;
Accompanying drawing 16 is vertical views of knob of the present invention;
Accompanying drawing 17 is upward views of knob of the present invention;
Accompanying drawing 19 is structural representations of stop denticle of the present invention and denticle engagement.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment 1: as Fig. 1, Fig. 2, shown in Figure 3, front end component is the transmission control part branch, back-end component is power section, front end component comprises front end shell 2, transmission shaft component, impacting shaft assembly, knob 12, impacting shaft holder, impacting shaft assembly and transmission shaft component are installed on the impacting shaft holder, and diaxon is at a distance of certain operating distance; The main shaft 7 that is driven by power section is provided with the rod end oscillation bearing 4 of impacting shaft assembly and the travelling gear 8 of transmission shaft component, main shaft 7 between 8 of rod end oscillation bearing 4 and travelling gears is provided with pillow block 11, pillow block 11 is provided with 2 axial notches 17 with the pillow block equal in length, be installed with two first plugs 9 that can insert in the pillow block groove 17 near pillow block 11 1 ends on the travelling gear 8, be welded with first clutch discs 25 on this travelling gear, 2 of its other end and front end shell are provided with first back-moving spring 6 that this travelling gear can be pushed to pillow block, first back-moving spring 6 is the tower spring, the small end and the travelling gear of this tower spring offset, and its big end offsets with the block plate 5 that is fixed on the main shaft.
4 of pillow block 11 and rod end oscillation bearings are provided with second clutch discs 14, this second clutch discs 14 is provided with two second plugs 13 that can insert pillow block groove 17 near the pillow block end, its other end can move axially and keeps cooperating with the transmission of rod end oscillation bearing with respect to rod end oscillation bearing 4, second clutch discs is arranged with shift fork cover 22 outward, knob 12 is provided with eccentric pin shaft 10, eccentric pin shaft 10 is the cylindrical structure vertical with the knob plane, itself and knob are injected into one, the top of eccentric pin shaft 10 is higher than first clutch discs 25 and overlaps 22 lower edge with shift fork, and this eccentric pin shaft 10 can stir first clutch discs respectively and second clutch discs moves axially.
The rod end oscillation bearing is provided with some slots 3 near the second clutch discs end, the 3rd plug 1, the three plug 1 that second clutch discs 14 is provided with some corresponding insertion slots 3 near rod end oscillation bearing 4 ends can move axially with respect to rod end oscillation bearing 4 but remain part in slot 3.The rod end oscillation bearing 4 and second clutch discs 14 will be provided with second back-moving spring 15 that second clutch discs can be pushed to pillow block, and rod end oscillation bearing 4 is provided with cannelure 16, the second back-moving springs 15 parts near second clutch discs, 14 ends and places in this cannelure.
The circumference of first clutch discs 25 is provided with 6 denticles 23, front end shell 2 is provided with 2 stop denticles 21, this stop denticle can mesh with denticle 23 when first plug 9 breaks away from groove, stop denticle 21 is located on the disk body 24, this disk body 24 axially is located on the dead axle 18 un-rotatably, the axle head dish 20 of disk body one end and dead axle offsets, and the free end of the other end and pushing top spring 19 offsets.
During use, crossing turning knob, can to drive eccentric pin shaft be axial rotation around the center line of knob, being rotated further knob when eccentric pin shaft and first clutch discs offset can break away from first plug of first clutch discs and the groove of pillow block, travelling gear and main shaft will relatively rotate, at this moment, second plug of second clutch discs is positioned at the groove of pillow block, and the rod end oscillation bearing rotates with main shaft, and electric hammer is in one-shot and hits duty; When eccentric pin shaft and second clutch discs offset, be rotated further knob and can manage the groove that second plug that close dish pushes away pillow block second, main shaft and rod end oscillation bearing relatively rotate, this moment, first plug of first clutch discs was positioned at the pillow block groove, travelling gear rotates with main shaft, and electric hammer is in single driller and makes state; When eccentric pin shaft neither offsets with first clutch discs, when not offseting with second clutch discs yet, first plug of first clutch discs and second plug of second clutch discs all are positioned at the groove of pillow block, travelling gear all rotates with main shaft with the rod end oscillation bearing, and electric hammer is in and not only bores but also impact duty.
Claims (9)
1, a kind of novel three-function light electric hammer, comprise front end component and back-end component, front end component is the transmission control part branch, back-end component is power section, front end component comprises front end shell (2), transmission shaft component, impacting shaft assembly, knob (12), impacting shaft holder, impacting shaft assembly and transmission shaft component are installed on the impacting shaft holder, and power transmission shaft and impacting shaft are at a distance of certain operating distance; The main shaft (7) that is driven by power section is provided with the rod end oscillation bearing (4) of impacting shaft assembly and the travelling gear (8) of transmission shaft component, main shaft (7) between between rod end oscillation bearing (4) and travelling gear (8) is provided with pillow block (11), described pillow block (11) is provided with some axial notches (17), described travelling gear (8) is gone up near pillow block (11) one ends and is installed with some first plugs (9) that insert described axial notch (17), be connected with first clutch discs (25) on this travelling gear, be provided with first back-moving spring (6) that this travelling gear can be pushed to pillow block between its other end and front end shell (2), it is characterized in that being provided with second clutch discs (14) between described pillow block (11) and rod end oscillation bearing (4), this second clutch discs (14) is provided with some second plugs (13) that insert described axial notch (17) near the pillow block end, its other end can move axially and keeps cooperating with the transmission of described rod end oscillation bearing with respect to described rod end oscillation bearing (4), described knob (12) is provided with eccentric pin shaft (10), this eccentric pin shaft (10) also can stir first clutch discs respectively between between first clutch discs and second clutch discs and second clutch discs moves axially, and described rod end oscillation bearing (4) will be provided with second back-moving spring (15) that second clutch discs can be pushed to described pillow block with second clutch discs (14).
2, novel three-function light electric hammer according to claim 1, the circumference that it is characterized in that described first clutch discs (25) is provided with some denticles (23), described front end shell (2) is provided with some stop denticles (21), and this stop denticle can mesh with described denticle (23) when first plug (9) breaks away from described axial notch.
3, novel three-function light electric hammer according to claim 2, it is characterized in that described stop denticle (21) is located on the disk body (24), this disk body (24) axially is located on the dead axle (18) un-rotatably, the axle head dish (20) of described disk body one end and dead axle offsets, and the free end of the other end and pushing top spring (19) offsets.
4, according to claim 1 or 2 or 3 described novel three-function light electric hammers, it is characterized in that described rod end oscillation bearing is provided with some slots (3) near the second clutch discs end, described second clutch discs (14) is held the 3rd plug (1) that is provided with the described slots of some corresponding insertions (3) near rod end oscillation bearing (4), and the 3rd plug (1) can move axially with respect to rod end oscillation bearing (4) but remain part in described slot (3).
5, according to claim 1 or 2 or 3 described novel three-function light electric hammers, it is characterized in that described second clutch discs is arranged with shift fork cover (22) outward, the top of described eccentric pin shaft (10) is higher than the lower edge of described first clutch discs (25) and shift fork cover (22).
6, according to claim 1 or 2 or 3 described novel three-function light electric hammers, it is characterized in that described first back-moving spring is the tower spring, the small end of this tower spring and described travelling gear offset, and its big end offsets with the block plate (5) that is fixed on the main shaft.
7, according to claim 1 or 2 or 3 described novel three-function light electric hammers, it is characterized in that described rod end oscillation bearing (4) is provided with cannelure (16) near second clutch discs (14) end, described second back-moving spring (15) part places in this cannelure.
8, according to the described novel three-function light electric hammer of claim 4, it is characterized in that described rod end oscillation bearing (4) is provided with cannelure (16) near second clutch discs (14) end, described second back-moving spring (15) part places in this cannelure.
9, according to the described novel three-function light electric hammer of claim 5, it is characterized in that described rod end oscillation bearing (4) is provided with cannelure (16) near second clutch discs (14) end, described second back-moving spring (15) part places in this cannelure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100842754A CN100491082C (en) | 2004-11-15 | 2004-11-15 | Three-function light electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100842754A CN100491082C (en) | 2004-11-15 | 2004-11-15 | Three-function light electric hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1775483A CN1775483A (en) | 2006-05-24 |
| CN100491082C true CN100491082C (en) | 2009-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100842754A Expired - Fee Related CN100491082C (en) | 2004-11-15 | 2004-11-15 | Three-function light electric hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100491082C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2920563Y (en) * | 2006-07-11 | 2007-07-11 | 王文江 | Light single-span four function electric hammer |
| JP5092898B2 (en) * | 2008-05-26 | 2012-12-05 | マックス株式会社 | Driving tool |
| CN102632481B (en) * | 2011-02-13 | 2014-12-10 | 南京德朔实业有限公司 | Electric hammer |
| CN102784949A (en) * | 2011-05-19 | 2012-11-21 | 博世电动工具（中国）有限公司 | Electric tool and transmission mechanism thereof |
| CN104227670B (en) * | 2013-06-24 | 2016-07-06 | 苏州宝时得电动工具有限公司 | Electric hammer |
| CN111529352B (en) * | 2020-05-16 | 2022-10-04 | 钟志民 | Fascia gun with swinging impact |
| CN113414746B (en) * | 2021-07-02 | 2022-09-06 | 重庆弘愿工具(集团)有限公司 | Electric hammer keeps off position switching subassembly |
-
2004
- 2004-11-15 CN CNB2004100842754A patent/CN100491082C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1775483A (en) | 2006-05-24 |
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Granted publication date: 20090527 Termination date: 20161115 |
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