CN2634198Y - Support structure of driving screw - Google Patents
Support structure of driving screw Download PDFInfo
- Publication number
- CN2634198Y CN2634198Y CN 03267488 CN03267488U CN2634198Y CN 2634198 Y CN2634198 Y CN 2634198Y CN 03267488 CN03267488 CN 03267488 CN 03267488 U CN03267488 U CN 03267488U CN 2634198 Y CN2634198 Y CN 2634198Y
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- bearing
- screw
- turn
- termination
- supporting structure
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Abstract
The utility model relates to a support structure of driving screw, comprising bearings and bearing bases arranged at the ends of the driving screw, bearing sleeves with bearing end covers, and lubrication seals. Bearings and bearing bases are arranged at the two ends of the driving screw, and an antithrust bearing assembly is arranged at one end of the driving screw, the antithrust bearing assembly is of tight match or screw match to the corresponding bearing base; an elastic extending device of the driving screw is arranged between the bearing at the other end of the driving screw and the corresponding bearing base. The utility model provides a support structure which can fully apply prestretching force on the two ends of the screw, and fully apply prepressing force on the antithrust bearing, thereby, the axial rigidity, transmission accuracy, transmission speed of driving screw can be greatly enhanced in variable high temperature condition.
Description
[technical field]
The utility model relates to the mechanical transmission structure field, and more particularly, the utility model relates to a kind of precision ball screw.
[background technique]
Now, in the mechanical transmission structure field, precision lead screw mechanism commonly used carries out control task, especially the electromechanical integration precision machining device of image height speed chip mounter one class, the feed servo system and the navigation system of numerical control device wherein send to ball screw framework with control signal, drive the leading screw rotation or drive the screw thread displacement to realize control task.In above-mentioned driving process, when even control actions such as the startup of leading screw stops with urgency, the quick counter-rotating of high speed rotating carry out, no matter leading screw or screw thread both sides can be subjected to the other side's strong wallop, wherein impact force that is subjected to the supporting structure of leading screw especially and corresponding displacement thereof are for the having the greatest impact of transmission accuracy, the most key.In order to improve the control accuracy of kinetic control system; the many terminations at leading screw of prior art adopt thrust bearing to prevent the axial motion of leading screw; consider the influence of thermal stretching to the very big leading screw of axial dimension; usually can and do reverse displacement and realize that the pretension of thrust bearing is to improve the thrust capacity and the precision of bearing at the fastening a pair of thrust bearing of the same end of leading screw; perhaps a fastening respectively thrust bearing comes leading screw is carried out prestretching to improve the rigidity and the transmission accuracy of leading screw at the two ends of leading screw, particularly mainly contains following several supporting means:
One, turn-screw one end assembles a pair of thrust bearing and pretension, and the other end is a cantilever beam structure, as shown in Figure 1.The axial rigidity of this supporting means is low, and transmission stiffness is very poor, only is adapted to short leading screw and the very little occasion of bearing capacity.
Two, turn-screw one end assembles a pair of thrust bearing and pretension, the other end assembling radial ball bearing, as shown in Figure 2.This supporting means has been because adopted simple beam structure, but and the influence of radial ball bearing adequate compensation leading screw thermal stretching, transmission stiffness is good slightly, applicable to the long situation of ball screw.
Three, the turn-screw two ends are respectively adorned a thrust bearing leading screw are carried out prestretching, and two ends all also are equipped with radial ball bearing simultaneously, as shown in Figure 3.This supporting means is because adopted the leading screw prestretching, transmission stiffness makes moderate progress, but because the influence of the thermal stretching of leading screw is very big, the transmission stiffness of this supporting means is too responsive and unstable to thermal stretching, and owing to thrust bearing is not carried out pretension, so transmission accuracy is affected.
Four, a pair of thrust bearing and radial ball bearing all are equipped with in the turn-screw two ends, as shown in Figure 4.This supporting means had both applied prefastening force to bearing, simultaneously also utilize thrust bearing that turn-screw has been carried out prestretching, can make the thermal distortion of leading screw transfer the pretightening force of thrust bearing to, thereby can improve axial rigidity and transmission accuracy, but shortcoming is not divide the realization of coming to the axial pretightening of bearing with to the axial prestretching of leading screw relatively independently, thereby, the axial prestretching poor effect of leading screw, the pretightening force of thrust bearing can only be offset the thermal distortion of leading screw termination and can not offset thermal distortion on the leading screw total length, and the pretension of turn-screw is enough to offset the thermal distortion on the leading screw total length also far from, under the situation of being heated, it is abominable that the operating conditions of the thrust bearing of this supporting means will become, and rotational velocity has been subjected to the dual restriction of two pairs of thrust-bearings, and transmission speed is the slowest.
The thrust-bearing that all above-mentioned supporting meanss and structure have all adopted quantity not wait, the rotating speed of leading screw is along with the increase of thrust-bearing quantity has been subjected to increasing restriction, so above-mentioned these existing leading screw supporting meanss and structure can only be used under the condition of low temperature change, low speed, can not adapt to flexibility (adaptability) of operation that electromechanical integration equipment with rapid changepl. never-ending changes and improvements proposes by force, at a high speed, the requirement of aspect such as highi degree of accuracy transmission.
[summary of the invention]
At the above-mentioned shortcoming of prior art, thereby technical problem to be solved in the utility model is will provide a kind of can be fully the leading screw two ends to be applied pretension, again can be fully thrust bearing be applied the supporting structure of turn-screw that pretightening force is increased in axial rigidity, transmission accuracy and the transmission speed of high-temperature change conditions underdrive leading screw greatly.
For this reason, technical solution of the present utility model is a kind of supporting structure of turn-screw, this supporting structure comprises bearing and the bearing support that is located at the turn-screw termination and the bearing housing that has bearing (ball) cover, lubrication oil seal, and on the two ends of described turn-screw, all be provided with bearing and bearing support, and what be provided with on the described termination of one of them pays for thrust bearing, and this thrust shaft is undertaken by drive fit or by screw-thread fit and is fixed in the bearing support corresponding with it; And between the described bearing on another described termination and its corresponding bearing support, be provided with the elastic stretching device of the described turn-screw that stretches.The termination that is stretched of described turn-screw is a tight fit in the described bearing, and described bearing is a tight fit in the bearing housing again, and described bearing housing is to be slidingly fitted in the endoporus of pairing bearing support.The utility model is in the tension structure that difference in functionality is set respectively on two terminations of turn-screw: the elastic stretching device that the stretching turn-screw is set between the bearing on termination and its corresponding bearing support therein, this termination that also is about to leading screw is set to the supported end that moves about, and on another termination, thrust shaft still is set to be undertaken to guarantee thrust intensity, this supporting setting of regulating respectively can apply pretension to the leading screw two ends fully, can apply pretightening force to thrust bearing fully again, for increasing the adaptability of turn-screw greatly to the high-temperature change, improve its axial rigidity, transmission accuracy and transmission speed lay the first stone.
Elastic stretching device of the present utility model can have many mode of executions, wherein in the preferred embodiment, described elastic stretching device is provided with the supporting mass of this spiral ring spring of supporting for the spiral ring spring that axially pushes away or draw this step bearing or its bearing housing along described turn-screw, described bearing support.Can adopt elastic members such as sheet spring in addition.
Described supporting mass is to be opened in the through hole step on the described bearing support or to collude hanging hang structure.The general all axle shapes with turn-screw of the axis of this through hole step are parallel.
Described spiral ring spring is directly between the corresponding end-faces of described through hole step end face and described bearing, or between the corresponding end-faces of the bearing housing of described through hole step end face and this bearing.
Cover is furnished with a bolt in the endoporus of the through hole of each described through hole step and described spiral ring spring, one on this bolt is connected on the corresponding end-faces of described bearing housing, the nut on the other end with described spiral ring spring pressing between the corresponding end-faces or nut body lower end surface of described through hole step end face and described bearing housing.The method that adopts this bolt to pass through the through hole of spiral ring spring and through hole step both can fix also can guide the spiral ring spring at through hole step end face and bearing housing corresponding end-faces or the nut body lower end surface between fully effectively with the elongation of the outside prestretching of leading screw.
For increasing stretching strength, can increase described spring number, that is described through hole step and spiral ring spring can there be one or more, and be that the center is circumferentially uniform on bearing support with described turn-screw.
Described through hole step is perforate at the export-oriented end face of described bearing support or interior on end face, and the nut of described bolt to cooperate the termination be export-oriented or introversive towards described bearing support.The nut of bolt cooperates the position and the direction of termination suitable, and the nut that can help the manual tune bolt is with increase and decrease elastic stretching power.
Described bearing housing comprises the bearing (ball) cover that stops described bearing string moving, also prevents the gland nut that described bearing is loosening on the termination that is stretched of described turn-screw by being threaded.This bearing (ball) cover and gland nut can further prevent in the drawing process, and the slippage between bearing and leading screw guarantees that the effect of stretching is not given a discount.
Bearing set on the termination that is stretched of described turn-screw is a radial ball bearing, and set thrust bearing is the angle contacting double thrustbearing on another termination, and this angle contacting double thrustbearing also adopts the square-head nut pretension.This angle contacting double thrustbearing specifically is the supported end that adopts back-to-back complete angular contact bearing, and uses the square nut preloaded bearing.The radial ball bearing of this angle contacting double thrustbearing and suitable high speed rotating adapts, and can prevent the axial motion of leading screw, can allow leading screw with very high speed rotation again.
In a word, supporting structure of the present utility model had both guaranteed fully that the thermal distortion of ball screw was consumed by the energy storage of spring and exoergic, can compensate the thermal stretching of leading screw, transmission stiffness is greatly improved, reduce vibrations, the energy storage effect of spring can also be carried out pretension to leading screw, to realize the steady of high-speed motion and acceleration and deceleration.Because transmission stiffness greatly improves, can also under the prerequisite of transmission stiffness satisfaction, reduce the size of transmission ball screw, make structure compact more, thereby the apparent size of whole numerical control device is reduced, reduce weight of equipment, save production cost.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
[description of drawings]
Fig. 1 is the structural representation sketch of prior art example 1.
Fig. 2 is the structural representation sketch of prior art example 2.
Fig. 3 is the structural representation sketch of prior art example 3.
Fig. 4 is the structural representation sketch of prior art example 4.
Fig. 5 is the utility model embodiment 1 a structural representation.
Fig. 6 is the utility model embodiment 2 a structural representation.
Fig. 7 is the left view of Fig. 6.
[embodiment]
Prior art example 1,
As shown in Figure 1: turn-screw 1 one ends assemble a pair of thrust bearing 2-1 and pretension on bearing support 3, the other end is a cantilever beam structure, the axial rigidity of this supporting means turn-screw 1 is low, and transmission stiffness is very poor, only is adapted to short leading screw and the very little occasion of bearing capacity.
Prior art example 2,
As shown in Figure 2: turn-screw 1 one ends assemble a pair of thrust bearing 2-1 and pretension on bearing support 3, the other end assembling radial ball bearing 2-0 is in bearing support 3 (omission), this supporting means is because adopted simple beam structure, but and the influence of radial ball bearing 2-0 adequate compensation turn-screw 1 thermal stretching, transmission stiffness is good slightly, applicable to the long situation of ball screw.
Prior art example 3,
As shown in Figure 3: turn-screw 1 two ends are respectively adorned a thrust bearing 2-1 leading screw are carried out prestretching, two ends all also are equipped with radial ball bearing 2-0 simultaneously, this supporting means is because adopted the leading screw prestretching, transmission stiffness makes moderate progress, but because the influence of the thermal stretching of turn-screw is very big, the transmission stiffness of this supporting means is too responsive and unstable to thermal stretching, and owing to thrust bearing 2-1 is not carried out pretension, so transmission accuracy is affected.
Prior art example 4,
As shown in Figure 4: a pair of thrust bearing 2-1 and radial ball bearing 2-0 all are equipped with in turn-screw 1 two ends, this supporting means had both applied prefastening force to thrust bearing 2-1, simultaneously also utilize thrust bearing 2-1 that turn-screw has been carried out prestretching, can make the thermal distortion of turn-screw 1 transfer the pretightening force of thrust bearing 2-1 to, thereby can improve turn-screw 1 axial rigidity and transmission accuracy, but shortcoming is not divide the realization of coming to the axial pretightening of bearing with to the axial prestretching of turn-screw 1 relatively independently, thereby, 1 axial prestretching poor effect of turn-screw, the pretightening force of thrust bearing 2-1 can only be offset the thermal distortion of leading screw termination and can not offset thermal distortion on turn-screw 1 total length, and the pretension of turn-screw 1 is enough to offset the thermal distortion on its total length also far from, under the situation of being heated, the operating conditions of the thrust bearing 2-1 of this supporting means will become abominable, and rotational velocity has been subjected to the dual restriction of two couples of thrust-bearing 2-1, and transmission speed is the slowest.
The utility model embodiment 1,
As shown in Figure 5: a kind of supporting structure of turn-screw 1, this supporting structure comprises bearing and bearing support that is located at turn-screw 1 termination and bearing housing 4, the lubrication oil seal 4-1 that has bearing (ball) cover 4-0, and on the two ends of described turn-screw 1, all be provided with bearing and bearing support, and what be provided with on the described termination of one of them pays 2-1 for thrust bearing, and this thrust shaft is undertaken 2-1 and is fixed in the bearing support corresponding with it 3 by drive fit or by screw-thread fit; And between the described radial ball bearing 2-0 on another described termination and its corresponding bearing support 3, be provided with the elastic stretching device of the described turn-screw 1 that stretches.The termination that is stretched of described turn-screw 1 is a tight fit among the described bearing 2-0, and described bearing 2-0 is a tight fit in again in the bearing housing 4, and described bearing housing 4 is to be slidingly fitted in the endoporus of pairing bearing support 3.
Described elastic stretching device is along axial pushing tow this step bearing 2-0 of described turn-screw 1 and the spiral ring spring 5 of bearing housing 4, and described bearing support 3 is provided with through hole step 6 supporting masses of this spiral ring spring 5 of supporting.
Described spiral ring spring 5 is directly between the corresponding end-faces of the bearing housing 4 of described through hole step 6 end faces and bearing 2-0.
Cover is furnished with a hollow bolt cover 7 in the endoporus of the through hole of described through hole step 6 and described spiral ring spring 5, this hollow bolt overlaps and is freely cooperating described turn-screw 1 in 7 hollow holes, and 7 one of this bolt sleeves are connected on the corresponding end-faces of described bearing housing 4 and bearing (ball) cover 4-0, and the nut 7-0 on the other end is pressed on described spiral ring spring 5 between the corresponding end-faces of described through hole step 6 end faces and described bearing housing 4 and bearing (ball) cover 4-0.
What described through hole step 6 was perforates at described bearing support 3 is interior on end face, and the nut 7-0 of described bolt sleeve 7 to cooperate the termination be introversion towards described bearing support.The bearing housing 4 of this termination comprises the bearing (ball) cover 4-0 that stops described bearing 2-0 string to move, and also prevent the gland nut 8 that bearing 2-0 is loosening on the termination that is stretched of turn-screw 1 by being threaded, this gland nut 8 is pressed on the bearing 2-0 end face by lining 8-2.
Set thrust bearing 2-1 is the angle contacting double thrustbearing on another termination of described turn-screw 1, and this thrust bearing 2-1 is paired angle contacting double thrustbearing 2-1, and this angle contacting double thrustbearing 2-1 also adopts square-head nut 8-1 pretension.
The utility model embodiment 2,
Shown in Fig. 6,7: a kind of supporting structure of turn-screw 1, this supporting structure comprises bearing and bearing support that is located at turn-screw 1 termination and bearing housing 4, the lubrication oil seal 4-1 that has bearing (ball) cover 4-0, and on the two ends of described turn-screw 1, all be provided with bearing and bearing support, and what be provided with on the described termination of one of them pays 2-1 for thrust bearing, and this thrust shaft is undertaken 2-1 and is fixed in the bearing support corresponding with it 3 by drive fit or by screw-thread fit; And between the described radial ball bearing 2-0 on another described termination and its corresponding bearing support 3, be provided with the elastic stretching device of the described turn-screw 1 that stretches.The termination that is stretched of described turn-screw 1 is a tight fit among the described radial ball bearing 2-0, and described bearing 2-0 is a tight fit in again in the bearing housing 4, and described bearing housing 4 is to be slidingly fitted in the endoporus of pairing bearing support 3.
Described elastic stretching device is along axial pushing tow this step bearing 2-0 of described turn-screw 1 and the spiral ring spring 5 of bearing housing 4, and described bearing support 3 is provided with through hole step 6 supporting masses of this spiral ring spring 5 of supporting.
Described spiral ring spring 5 is indirectly between the corresponding end-faces of the bearing housing 4 of described through hole step 6 end faces and bearing 2-0.
Cover is furnished with a bolt 7 in the endoporus of the through hole of each described through hole step 6 and described spiral ring spring 5,7 one on this bolt is connected on the corresponding end-faces of described bearing housing 4, and the nut 7-0 on the other end is pressed on described spiral ring spring 5 between described through hole step 6 end faces and the nut 7-0 body lower end surface.Spiral ring spring spiral shell 5 one end bearings are on hole step 6 end faces, and spiral ring spring spiral shell 5 the other ends react on nut 7-0 with compressive force, and be delivered to bearing housing 4 through bolt 7, and then be delivered on the turn-screw 1, thereby turn-screw 1 pretension.
Described through hole step 6 and spiral ring spring 5 have six, and are that the center is circumferentially uniform on bearing support 3 with described turn-screw 1.
Described through hole step 6 be perforate on the export-oriented end face of described bearing support 3, the termination of the nut 7-0 of described bolt 7 also is the extroversion towards described bearing support 3, so that manually adjust tightening force.
Described bearing housing 4 comprises the bearing (ball) cover 4-0 that stops described bearing 2-0 string to move, this bearing (ball) cover 4-0 is pressed on the end face of described bearing housing 4 by several nut 4-2, also prevent the gland nut 8 that described bearing 2-0 is loosening on the termination that is stretched of described turn-screw 1 by being threaded, this gland nut 8 is pressed on the bearing 2-0 end face by lining 8-2.
Set thrust bearing 2-1 is the angle contacting double thrustbearing on another termination of described turn-screw 1, and this thrust bearing 2-1 is paired angle contacting double thrustbearing 2-1, and this angle contacting double thrustbearing 2-1 also adopts square-head nut 8-1 pretension.
Claims (10)
1, a kind of supporting structure of turn-screw, this supporting structure comprises bearing and the bearing support that is located at the turn-screw termination and the bearing housing that has bearing (ball) cover, lubrication oil seal, it is characterized in that: on the two ends of described turn-screw, all be provided with bearing and bearing support, and what be provided with on the described termination of one of them pays for thrust bearing, and this thrust shaft is undertaken by drive fit or by screw-thread fit and is fixed in the bearing support corresponding with it; And between the described bearing on another described termination and its corresponding bearing support, be provided with the elastic stretching device of the described turn-screw that stretches.
2, the supporting structure of turn-screw as claimed in claim 1, it is characterized in that: the termination that is stretched of described turn-screw is a tight fit in the described bearing, described bearing is a tight fit in the bearing housing again, and described bearing housing is to be slidingly fitted in the endoporus of pairing bearing support.
3, the supporting structure of turn-screw as claimed in claim 1, it is characterized in that: described elastic stretching device is provided with the supporting mass of this spiral ring spring of supporting for the spiral ring spring that axially pushes away or draw this step bearing or its bearing housing along described turn-screw, described bearing support.
4, the supporting structure of turn-screw as claimed in claim 1 is characterized in that: described supporting mass is to be opened in the through hole step on the described bearing support or to collude hanging hang structure.
5, the supporting structure of turn-screw as claimed in claim 1, it is characterized in that: described spiral ring spring is directly between the corresponding end-faces of described through hole step end face and described bearing, or between the corresponding end-faces of the bearing housing of described through hole step end face and this bearing.
6, the supporting structure of turn-screw as claimed in claim 1, it is characterized in that: cover is furnished with a bolt in the endoporus of the through hole of each described through hole step and described spiral ring spring, one on this bolt is connected on the corresponding end-faces of described bearing housing, the nut on the other end with described spiral ring spring pressing between the corresponding end-faces or nut body lower end surface of described through hole step end face and described bearing housing.
7, the supporting structure of turn-screw as claimed in claim 1 is characterized in that: described through hole step and spiral ring spring have one or more, and are that the center is circumferentially uniform on bearing support with described turn-screw.
8, the supporting structure of turn-screw as claimed in claim 1, it is characterized in that: described through hole step is perforate at the export-oriented end face of described bearing support or interior on end face, and the nut of described bolt to cooperate the termination be export-oriented or introversive towards described bearing support.
9, the supporting structure of turn-screw as claimed in claim 1, it is characterized in that: described bearing housing comprises the bearing (ball) cover that stops described bearing string moving, also prevents the gland nut that described bearing is loosening on the termination that is stretched of described turn-screw by being threaded.
10, the supporting structure of turn-screw as claimed in claim 1, it is characterized in that: set bearing is a radial ball bearing on the termination that is stretched of described turn-screw, and set thrust bearing is the angle contacting double thrustbearing on another termination, and this angle contacting double thrustbearing also adopts the square-head nut pretension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03267488 CN2634198Y (en) | 2003-07-14 | 2003-07-14 | Support structure of driving screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03267488 CN2634198Y (en) | 2003-07-14 | 2003-07-14 | Support structure of driving screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2634198Y true CN2634198Y (en) | 2004-08-18 |
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ID=34298833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03267488 Expired - Lifetime CN2634198Y (en) | 2003-07-14 | 2003-07-14 | Support structure of driving screw |
Country Status (1)
| Country | Link |
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| CN (1) | CN2634198Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139447A (en) * | 2011-03-23 | 2011-08-03 | 纽威数控装备（苏州）有限公司 | Fully-fixed screw rod prestretching mechanism |
| CN102734440A (en) * | 2012-07-05 | 2012-10-17 | 中国人民解放军63983部队 | Bearing seat capable of adjusting gear axial position |
| CN102820717A (en) * | 2011-06-10 | 2012-12-12 | 大银微系统股份有限公司 | Stick-shaped motor stator fixing structure with axial pretension force |
| CN103182534A (en) * | 2013-03-20 | 2013-07-03 | 北京工业大学 | Bidirectional pressure regulating pre-tensioner for electric spindle angular contact ball bearing |
| CN106481765A (en) * | 2015-11-30 | 2017-03-08 | 衡阳双雁运输机械有限公司 | A kind of leading screw mounting structure |
| CN108916338A (en) * | 2018-07-20 | 2018-11-30 | 长久（滁州）专用汽车有限公司 | Position-limit mechanism is used in a kind of installation of lead screw |
-
2003
- 2003-07-14 CN CN 03267488 patent/CN2634198Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139447A (en) * | 2011-03-23 | 2011-08-03 | 纽威数控装备（苏州）有限公司 | Fully-fixed screw rod prestretching mechanism |
| CN102139447B (en) * | 2011-03-23 | 2012-11-21 | 纽威数控装备（苏州）有限公司 | Fully-fixed screw rod prestretching mechanism |
| CN102820717A (en) * | 2011-06-10 | 2012-12-12 | 大银微系统股份有限公司 | Stick-shaped motor stator fixing structure with axial pretension force |
| CN102734440A (en) * | 2012-07-05 | 2012-10-17 | 中国人民解放军63983部队 | Bearing seat capable of adjusting gear axial position |
| CN103182534A (en) * | 2013-03-20 | 2013-07-03 | 北京工业大学 | Bidirectional pressure regulating pre-tensioner for electric spindle angular contact ball bearing |
| CN106481765A (en) * | 2015-11-30 | 2017-03-08 | 衡阳双雁运输机械有限公司 | A kind of leading screw mounting structure |
| CN108916338A (en) * | 2018-07-20 | 2018-11-30 | 长久（滁州）专用汽车有限公司 | Position-limit mechanism is used in a kind of installation of lead screw |
| CN108916338B (en) * | 2018-07-20 | 2021-10-01 | 长久（滁州）专用汽车有限公司 | Stop gear is used in lead screw installation |
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| C14 | Grant of patent or utility model | ||
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Owner name: GUANGDONG FENGHUA ADVANCED TECHNOLOGY CO., LTD.; Free format text: FORMER OWNER: ZHAOQING XIN BAO HUA ELECTRONIC EQUIPMENT CO., LTD. Effective date: 20080711 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080711 Address after: Fenghua electronics industrial city, Fenghua Road, Guangdong, Zhaoqing 18, China: 526020 Co-patentee after: Xinbaohua Electronic Equipment Co., Ltd., Zaoqing City Patentee after: Guangdong Fenghua high and new Polytron Technologies Inc Address before: 24, No. three, Duanzhou Road, Zhaoqing, Guangdong Province, 526020 Patentee before: Xinbaohua Electronic Equipment Co., Ltd., Zaoqing City |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130714 Granted publication date: 20040818 |