CN201545580U - Elevator driving device - Google Patents
Elevator driving device Download PDFInfo
- Publication number
- CN201545580U CN201545580U CN2009202087714U CN200920208771U CN201545580U CN 201545580 U CN201545580 U CN 201545580U CN 2009202087714 U CN2009202087714 U CN 2009202087714U CN 200920208771 U CN200920208771 U CN 200920208771U CN 201545580 U CN201545580 U CN 201545580U
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- China
- Prior art keywords
- brake
- lift
- drive unit
- installation portion
- brake equipment
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to an elevator driving device which comprises an engine base, a stator, a rotor, a rotating frame body, a main shaft, a driving rope wheel, a brake device and a brake disc, wherein the engine base is provided with a stator mounting part of the stator, a main shaft support part used for supporting the main shaft in a rotating way, a brake device mounting part and a brake surface of the brake device, and a cavity part used for containing the brake device, the brake disc, the brake device mounting part and the brake surface; the rotating frame body is provided with a rotor mounting part of the rotor, and a driving rope wheel mounting part of the driving rope wheel; the main shaft is fixedly connected with the rotating frame body; at least part of the main shaft extends into the cavity part; the brake disc and the main shaft extend into the cavity part, and can be connected with each other in an axial moving way; the braking force can be transferred onto the main shaft by connecting the brake disc; and the stator and the rotor are arranged in an opposite way along the radial direction. The elevator driving device has the characteristics of simple structure, miniaturization, low cost and low noise and the like.
Description
Technical field
The utility model relates to a kind of drive unit for lift.
Background technology
Existing drive unit for lift is as the disclosed elevator traction machine of Chinese invention patent (notification number CN1141775C).The electromagnet of this towing machine and brake control lever are arranged on the outside of towing machine, and act on by brake control lever on the brake wheel of towing machine outer rotor and produce braking force, thus the braking towing machine.The deficiency of this invention is: 1) because the brake wheel and the traction sheave of towing machine are positioned at the same side, and disposed adjacent, brake area is very easy to be subjected to the grease influence of steel rope like this, thereby causes the friction coefficient of brake area to reduce the influence of normal the bringing on a disaster property of operation of this elevator; 2) because drg is arranged on the outside of towing machine, the noise of drg directly externally transmits, thereby causes the noise of towing machine to increase, and towing machine is used in machine-roomless lift and will directly be had influence on the riding quality of elevator like this; 3) for reduce noise usually be with the gap between friction lining and the brake wheel be provided with very little, like this when acting on the brake wheel because of brake control lever, because the opening time of two brakings can not be consistent, so may cause brake wheel to stressed direction distortion, thereby cause another brake control lever to contact with brake wheel, thereby make the friction disc wear of another brake control lever, reduce the service life of brake control lever, and bring vibration and noise may for the operation of elevator; Simultaneously in order to guarantee that brake wheel and brake control lever have enough rigidity need design enough strong brake control lever and brake wheel, to increase the cost of towing machine like this, and, increase the moment requirement of towing machine, thereby further increase the cost of towing machine because the inertia of brake wheel increases; 4) because brake control lever and electromagnet are arranged on the outside of towing machine, cause the oad of towing machine to become big on the one hand, the axial dimension that comprises the needs of brake wheel, the height that electromagnet needs, influence the outward appearance of towing machine, this towing machine can not be applied on the machine-roomless lift product substantially, causes the parts of towing machine to increase on the other hand, the processing capacity of parts increases, and the cost of towing machine increases; 5) be installed on the rotor owing to magnet steel, and brake surface also is positioned on the rotor, when so brake control lever produces braking force to brake wheel, to produce impact to magnet steel, such impact will directly have influence on being connected of magnet steel and rotor, thereby may cause magnet steel to come off from rotor, cause serious accident, operation brings and seriously influences to elevator; 6),, be the twice that end face (two brake surfaces are arranged) brake braking force requires so the requirement of braking force is big because brake surface is the outside face of brake wheel.
In order to solve the noise problem of traction machine brake as described above, make the designs simplification and the miniaturization of towing machine, Chinese invention patent (notification number CN100335400C) discloses a kind of towing machine.The brake equipment of towing machine is arranged on the inside of towing machine fixed frame, and the brake axle of brake equipment acts on the brake surface of rotor and produces braking force, the braking towing machine.This invention is arranged on drg the inside of towing machine fixed frame, brake equipment is closed in the fixed frame simultaneously, the noise transmission that reduces brake equipment like this is to the outside of towing machine, and brake surface and rope sheave be separated out, and brake surface can not be subjected to the influence of steel rope grease.The weak point of this invention is: 1) for reduce noise usually be with the gap between brake axle and the brake surface be provided with very little, like this when acting on the brake surface because of brake axle, because two braking action times can not be consistent, so may cause the rotor installation portion to stressed direction distortion, thereby cause another brake axle to contact with brake surface, thereby make the friction disc wear of another brake axle, reduce the service life of brake axle, and bring vibration and noise may for the operation of elevator; Simultaneously in order to guarantee that the enough rigidity of brake surface need design enough strong rotor installation portion, the gauge that is the rotor installation portion increases, to increase the cost of towing machine like this, and because the inertia increase of rotor installation portion, increase the moment requirement of towing machine, thereby further increase the cost of towing machine; 2) even in order to guarantee the gap between brake axle and the brake surface, the necessary fine limit work of brake surface, cost of processing increases like this; 3) because the friction lining of brake axle often has abrasive dust to produce, these abrasive dusts probably drop on the brake surface, thereby the friction force instability that may cause brake equipment, normal operation generation to elevator has a strong impact on, so need clear up these abrasive dusts termly, or by anti-dandruff device these abrasive dusts are handled, do the work capacity that will increase maintenance and maintenance like this, increase the use cost of towing machine simultaneously; 4) be oppositely arranged on the rotation support frame because of brake surface and rotor installation portion, so when brake axle produces braking force to brake surface, also produce simultaneously and impact to rotor, such impact will directly have influence on rotor with the rotation support frame the rotor installation portion between be connected, cause rotor to come off from the rotation support frame, thereby cause serious accident, operation brings and seriously influences to elevator; 5) because brake surface is the inner circumferential surface of rotor installation portion,, be the twice of end face (two brake surfaces are arranged) brake equipment required braking force, increase the size and the cost of brake equipment, influence the scantling of structure of towing machine simultaneously so the requirement of braking force is big.
The utility model content
The purpose of this utility model is the above-mentioned deficiency at prior art, and a kind of simple in structure, miniaturization, cost is low and noise is little drive unit for lift are provided.
Drive unit for lift of the present utility model comprises support, stator, rotor, rotation framework, main shaft, driving rope sheave, brake equipment and brake disc; Described support has the stator installation portion of described stator, has the main shaft support portion that described main axis rotation supports, brake equipment installation portion and brake surface with described brake equipment have the chamber portion that can hold described brake equipment, described brake disc, described brake equipment installation portion and described brake surface; Described rotation framework has the rotor installation portion of described rotor, has the driving rope sheave installation portion of described driving rope sheave; Described main shaft is captiveed joint with described rotation framework; Described main shaft to small part stretches into described chamber portion; Described brake disc and described main shaft stretch into the part of described chamber portion, can connect with moving axially, and connecting brake disc by this can be with brake-force transmission to described main shaft; Described stator and described rotor are oppositely arranged in radial direction.
Described chamber portion is positioned at the inside of described rotor installation portion to small part.
Described chamber portion is positioned at the inside of described stator installation portion at least.
Described rotor installation position is in the inside of described stator installation portion.
Described main shaft support portion to small part stretches into the inside that drives rope sheave.
The braking air gap of described brake equipment is presented axially in the outside of rotor installation portion.
Described brake equipment installation portion and described brake surface are same structure.
Described chamber portion captives joint with the cover plate on being installed in described support, forms an osed top installing space.
Described brake equipment, brake equipment installation portion, brake disc and brake surface are positioned at described installing space.
Described brake equipment to small part is positioned at described chamber portion.
Described brake disc is between described brake equipment and described brake equipment installation portion.
Described brake equipment has secured core and mobile armature; Described secured core is captiveed joint with the brake equipment installation portion by at least two installation shaft; Described mobile armature is connected movably with installation shaft.
Described stator installation position is in the inside of described rotor installation portion.
Described brake disc is between described brake equipment and described brake surface.
Described brake equipment installation portion and described brake surface are different structure.
Described mobile armature inside is provided with magnet coil and spring.
Adopt the drive unit for lift of said structure, more existing drive unit for lift has following characteristics: 1) described brake surface is the some of described support, so can utilize the intensity of support self, needn't design strong brake wheel of rigidity or rotating frame, therefore the thickness of the rotor installation portion of described rotation framework can attenuate, thereby reduce the weight of described rotation framework, cost-cutting, and owing to the inertia of rotor installation portion reduces, can reduce the moment requirement of drive unit for lift, thereby further reduce the cost of drive unit for lift; 2) described brake equipment is given main shaft by the braking brake disc with brake-force transmission, and glancing impact can not cause radial impact to described rotor like this, can not influence described rotor and produce any influence with being connected of described rotation framework, guarantees the safety of drive unit for lift; 3) because described brake surface can not be subjected to the influence of the brake strip abrasive dust of described brake disc, so braking force keeps stable; 4) described brake equipment is positioned at the inside of actuating device support, thus the noise of brake equipment can not transmit out substantially, thereby guarantee the quality of drive unit for lift, the noise of drive unit for lift is little; The oad of whole drive unit for lift is little simultaneously, compact conformation; 5) brake disc of described brake equipment has two brake strips, thereby can reduce the requirement of the braking force of brake equipment, reduces the cost of brake equipment, and the scantling of structure of brake equipment can not influence the structure design of drive unit for lift simultaneously; 6) described brake surface is the part of support, so can not exist brake equipment to move when inconsistent, the braking maneuver of described brake equipment influences each other; 7) described driving rope sheave and brake surface are kept apart fully, and described brake surface can not be subjected to the grease influence of steel rope, can not be subjected to the influence to friction face of extraneous dust or air humidity simultaneously yet.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 a is first kind of embodiment scheme drawing of the utility model;
Fig. 1 b is that the A of Fig. 1 a is to view;
Fig. 1 c is that the B of Fig. 1 a is to view;
Fig. 2 a is second kind of embodiment scheme drawing of the utility model;
Fig. 2 b is that the A of Fig. 2 a is to view;
Fig. 2 c is that the B of Fig. 2 a is to view;
Fig. 3 a is the third embodiment scheme drawing of the utility model;
Fig. 3 b is that the A of Fig. 3 a is to view;
Fig. 3 c is that the B of Fig. 3 a is to view;
Fig. 4 a is the 4th kind of embodiment scheme drawing of the utility model;
Fig. 4 b is that the A of Fig. 4 a is to view;
Fig. 4 c is that the B of Fig. 4 a is to view;
The specific embodiment
First kind of embodiment of the utility model as shown in Figure 1a, Fig. 1 b be the A of Fig. 1 a to view, Fig. 1 c is that the B of Fig. 1 a is to view; Drive unit for lift comprises driving rope sheave 1, rotation framework 2, rotor 3, support 4, stator 5, main shaft 19, brake disc 8 and brake equipment, and brake equipment comprises secured core 10, mobile armature 16, magnet coil 11, spring 12, installation shaft 15.Described support 4 comprises stator installation portion 4a, the 4b of main shaft support portion, brake equipment installation portion 4c, brake surface 4c, for simplified structure, the brake surface 4c of this embodiment and brake equipment installation portion 4c are same structure, can hold the 4d of chamber portion of described brake equipment, described brake disc 8, described brake equipment installation portion 4c and described brake surface 4c.Rotation framework 2 comprises rotor installation portion 2a, drives rope sheave installation portion 2b, and main shaft 19 is fixed together with rotation framework 2.Described main shaft 19 is connected with the 4b of main shaft support portion with bearing 7 rotatably by bearing 6.Described brake disc 8 can be connected 21 with described main shaft 19 with moving axially, can move axially on main shaft 19 by connecting 21 brake discs 8, and connecting 21 brake discs 8 by this simultaneously can be delivered to described main shaft 19 with the drag friction power that brake equipment produces.
As drive unit for lift as described in Fig. 1 a, support 4 is permanently connected stator 5 together by stator installation portion 4a, and by the 4b of main shaft support portion and two bearings 6, bearing 7, support 4 links together rotatably with main shaft 19.The 4d of chamber portion of support 4 is provided with brake equipment installation portion 4c and brake surface 4c.The secured core 10 of brake equipment, mobile armature 16, magnet coil 11, installation shaft 15 and brake disc 8 are arranged in the 4d of chamber portion of support 4.Certainly secured core 10, mobile armature 16, magnet coil 11, installation shaft 15 and the brake disc 8 of brake equipment also can partly be arranged in the 4d of chamber portion of support 4.The 4d of chamber portion forms an osed top installing space by support cover plate 18, and the secured core 10 of brake equipment, mobile armature 16, magnet coil 11, installation shaft 15 and brake disc 8 are positioned at described installing space.The described chamber 4d of portion is positioned at the inside of described stator installation portion 4a, and the described chamber 4d of portion partly is positioned at the inside of described rotor 3.
As rotation framework 2 as described in Fig. 1 a by rotor installation portion 2a and as described in rotor 3 be permanently connected together, captive joint with described driving rope sheave 1 by driving rope sheave installation portion 2b.Main shaft 19 is permanently connected with described rotation framework 2, and stretches into to small part in the 4d of chamber portion of support 4.Main shaft 19 stretches into the end of the 4d of chamber portion, is connected with coder axle 13, and coder 14 is connected rotationally with coder axle 13.Described rotor 3 and described stator 5 are oppositely arranged in radial direction.The support 4 of described drive unit for lift is provided with a shrouding 17, by shrouding 17 stator 5 and rotor 3 is enclosed in the space.Stator 5 and rotor 3 can not be subjected to the influence of external environment condition like this.The described main shaft support 4b of portion partly stretches into the inside that drives rope sheave 1.Described rotor installation portion 2a is positioned at the inside of stator installation portion 4a.Certainly stator installation portion 4a also can be designed to be positioned at the inside of rotor installation portion 2a.In order to simplify the number of parts of drive unit for lift, drive rope sheave 1, main shaft 9 and 2 integrated designs of rotation framework.
Secured core 10 as brake equipment as described in Fig. 1 a is captiveed joint with brake equipment installation portion 4c by two installation shaft 15.Mobile armature 16 is connected movably with two installation shaft 15.Brake disc 8 is between brake equipment and brake equipment installation portion 4c.Brake disc 8 both ends of the surface have friction lining 9 respectively.Brake disc 8 is connected movably with the part that main shaft 19 stretches into the 4d of chamber portion, and this connection 21 can be that spline connects, and also can be that flat key connects.The utility model drive unit for lift has two brake equipments.Two brake equipments floor plan on described brake surface 4c.Coder 14 is arranged on the midway location of two brake equipments.The braking air gap of described brake equipment is presented axially in the outside of rotor installation portion 2a, and wherein the h size shown in Fig. 1 a is greater than 0.
Has the said structure drive unit for lift, its structure is very simple, safe and reliable, described support 4 has rotary supporting part 4b, the brake equipment installation portion 4c of stator installation portion 4a, main shaft 19, can hold the 4d of chamber portion of described brake equipment, described brake disc 8, described brake equipment installation portion 4c and described brake surface 4c; Described rotation framework 2 has the rope sheave of driving installation portion 2b, rotor installation portion 2a; Described brake surface 4c keeps apart fully with driving rope sheave 1.The component part of drive unit for lift is few, simple in structure so on the one hand; On the other hand owing to have the 4d of chamber portion, hold brake equipment, brake disc 8, brake equipment installation portion 4c, brake surface 4c, brake equipment is positioned at the inside of the 4d of chamber portion fully like this, or brake equipment partly is positioned at the inside of the 4d of chamber portion, support cover plate 18 forms an osed top installing space with the 4d of chamber portion simultaneously, so the brake noise of the utility model drive unit for lift can not transmitted out substantially, described brake surface 4c can not be subjected to the influence of steel rope grease, also can not be subjected to simultaneously the influence of external environment, humidity of dust and air etc. for example, thereby the stay in grade that guarantees drive unit for lift is reliable, the noise of drive unit for lift is little, oad is little, especially axial dimension can do little, compact conformation.Littler for what the axial dimension of drive unit for lift can be done, the described chamber 4d of portion is positioned at the inside of described rotor installation portion 2a to small part, is positioned at the inside of stator installation portion 4a simultaneously at least; The described in addition main shaft support 4b of portion stretches into the inside that drives rope sheave 1 to small part.The 4b of main shaft support portion stretches into the inside that drives rope sheave 1 to small part, also can be so that the length of the cantilever support of main shaft 19 is short, thus can reduce the requirement of strength of main shaft 19.
As shown in Figure 1a as can be known, the brake surface 4c of brake equipment and brake equipment installation portion 4c are support 4 same structures, whole like this drive unit for lift is simple in structure, simultaneously the intensity of the brake surface 4c of brake equipment and brake equipment installation portion 4c can make full use of the intensity of support 4 itself, thereby can save the supporting construction of brake surface 4c, can save cost.Because brake surface 4c is the part of support 4, so do not need rotor installation portion 2a is had the requirement of any strength and stiffness, the thickness of rotor installation portion 2a can be reduced like this, thereby reduce rotor installation portion 2a and drive unit for lift cost, and owing to the inertia of rotor installation portion 2a reduces, can reduce the moment requirement of drive unit for lift, thereby further reduce the cost of drive unit for lift.Two brake equipments horizontal distribution on brake surface 4c of described drive unit for lift, brake equipment will make full use of radial space and the axial space of cavity 4d like this, guarantee brake equipment substantially to the scantling of structure of support 4 without any influence.Because of the brake surface 4c of two brake equipments is identical, and brake surface 4c is the part of support 4, so the braking maneuver of two brake equipments can not influence each other, can not exist brake equipment to move when inconsistent, and the braking maneuver of described brake equipment influences each other.Described brake disc 8 is between brake equipment and brake surface 4c, have two brake strips 9, the requirement of brake equipment braking force can reduce half like this, thereby the size of brake equipment can reduce, cost can reduce simultaneously, so the structure design of drive unit for lift is freer.For the ease of the detection of the braking air gap of brake equipment, the braking air gap of described brake equipment is presented axially in the outside of rotor installation portion 2a, and promptly the h size shown in Fig. 1 a is convenient to the 4d in chamber portion like this greater than 0, can detect the size of braking air gap.Because it is described brake surface 4c can not adhere to the abrasive dust of brake strip 9, stable thereby braking force keeps.Braking force is to act on the brake surface 4c in addition, be on the support 4, braking force is by braking brake disc 8, brake-force transmission is given on the main shaft 19, be delivered to again and drive on the rope sheave 1, glancing impact can not cause radial impact to described rotor 3 like this, can not influence described rotor 3 and produce any influence with being connected of described rotation framework 2, guarantees the safety of drive unit for lift.
Second kind of embodiment of the utility model shown in Fig. 2 a, Fig. 2 b be the A of Fig. 2 a to view, Fig. 2 c is that the B of Fig. 2 a is to view.Be that with first kind of embodiment difference of the utility model the construction profile of brake equipment is for circular.The braking air gap of brake equipment is convenient in such design, detects by the 4d of chamber portion.Therefore brake the outside that air gap needn't be arranged on rotor installation portion 2a in the axial direction.The axial dimension of whole like this drive unit for lift is can design-calculated littler.
The third embodiment of the utility model shown in Fig. 3 a, Fig. 3 b be the A of Fig. 3 a to view, Fig. 3 c is that the B of Fig. 3 a is to view.Be that with second kind of embodiment difference of the utility model brake equipment installation portion 4c and brake surface 4e are different structure, and brake disc 8 is between brake equipment and brake surface 4e.
The 4th kind of embodiment of the utility model shown in Fig. 4 a, Fig. 4 b be the A of Fig. 4 a to view, Fig. 4 c is that the B of Fig. 4 a is to view.Be to be provided with in the mobile armature 16 spring 11 and coil 12 with the third embodiment difference of the utility model.The benefit of doing like this be the braking air gap of brake equipment more near the outside of the 4d of chamber portion, the braking air gap of brake equipment is easier like this detects by the 4d of chamber portion.
Claims (16)
1. drive unit for lift, it comprises support, stator, rotor, rotation framework, main shaft, driving rope sheave, brake equipment and brake disc, it is characterized in that: described support has the stator installation portion of described stator, has the main shaft support portion that described main axis rotation supports, brake equipment installation portion and brake surface with described brake equipment have the chamber portion that can hold described brake equipment, described brake disc, described brake equipment installation portion and described brake surface; Described rotation framework has the rotor installation portion of described rotor, has the driving rope sheave installation portion of described driving rope sheave; Described main shaft is captiveed joint with described rotation framework; Described main shaft to small part stretches into described chamber portion; Described brake disc and described main shaft stretch into the part of described chamber portion, can connect with moving axially, and connecting brake disc by this can be with brake-force transmission to described main shaft; Described stator and described rotor are oppositely arranged in radial direction.
2. drive unit for lift as claimed in claim 1 is characterized in that: described chamber portion is positioned at the inside of described rotor installation portion to small part.
3. drive unit for lift as claimed in claim 1 is characterized in that: described chamber portion is positioned at the inside of described stator installation portion at least.
4. drive unit for lift as claimed in claim 1 is characterized in that: described rotor installation position is in the inside of described stator installation portion.
5. drive unit for lift as claimed in claim 1 is characterized in that: described main shaft support portion to small part stretches into the inside that drives rope sheave.
6. drive unit for lift as claimed in claim 1 is characterized in that: the braking air gap of described brake equipment is presented axially in the outside of rotor installation portion.
7. drive unit for lift as claimed in claim 1 is characterized in that: described brake equipment installation portion and described brake surface are same structure.
8. drive unit for lift as claimed in claim 1 is characterized in that: described chamber portion captives joint with the cover plate on being installed in described support, forms an osed top installing space.
9. drive unit for lift as claimed in claim 8 is characterized in that: described brake equipment, brake equipment installation portion, brake disc and brake surface are positioned at described installing space.
10. drive unit for lift as claimed in claim 1 is characterized in that: described brake equipment to small part is positioned at described chamber portion.
11. as arbitrary described drive unit for lift in the claim 1～10, it is characterized in that: described brake disc is between described brake equipment and described brake equipment installation portion.
12. as arbitrary described drive unit for lift in the claim 1～10, it is characterized in that: described brake equipment has secured core and mobile armature; Described secured core is captiveed joint with the brake equipment installation portion by at least two installation shaft; Described mobile armature is connected movably with installation shaft.
13. drive unit for lift as claimed in claim 1 is characterized in that: described stator installation position is in the inside of described rotor installation portion.
14. as arbitrary described drive unit for lift in the claim 1～10, it is characterized in that: described brake disc is between described brake equipment and described brake surface.
15. drive unit for lift as claimed in claim 1 is characterized in that: described brake equipment installation portion and described brake surface are different structure.
16. drive unit for lift as claimed in claim 12 is characterized in that: described mobile armature inside is provided with magnet coil and spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202087714U CN201545580U (en) | 2009-09-01 | 2009-09-01 | Elevator driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202087714U CN201545580U (en) | 2009-09-01 | 2009-09-01 | Elevator driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201545580U true CN201545580U (en) | 2010-08-11 |
Family
ID=42600746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202087714U Expired - Lifetime CN201545580U (en) | 2009-09-01 | 2009-09-01 | Elevator driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201545580U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941629B (en) * | 2009-07-09 | 2012-11-21 | 包文丽 | Elevator driving device |
-
2009
- 2009-09-01 CN CN2009202087714U patent/CN201545580U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941629B (en) * | 2009-07-09 | 2012-11-21 | 包文丽 | Elevator driving device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100811 Effective date of abandoning: 20090901 |
|
| RGAV | Abandon patent right to avoid regrant |