CN202126269U - Photoelectric encoder - Google Patents
Photoelectric encoder Download PDFInfo
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- CN202126269U CN202126269U CN2011202068481U CN201120206848U CN202126269U CN 202126269 U CN202126269 U CN 202126269U CN 2011202068481 U CN2011202068481 U CN 2011202068481U CN 201120206848 U CN201120206848 U CN 201120206848U CN 202126269 U CN202126269 U CN 202126269U
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Abstract
The utility model discloses a photoelectric encoder, which comprises a casing, a first coded disk, a second coded disk and a rotary shaft. The first coded disk and the second coded disk are positioned in the casing, the rotary shaft penetrates through the casing to be fixed with the second coded disk, and the first coded disk is fixed with the casing. A first casing, a second casing, the first coded disk and the second disk are arranged in coaxial mode, a first through hole and a second through hole are oppositely arranged on the casing, and first gratings with the same slit width are respectively positioned on the circumferences of the first coded disk and the second coded disk. A circumference where the centers of first gratings are positioned and a circumference where the center of the first through hole is positioned are concentric circles, and lengths of grating holes of first gratings are larger than the diameter of the first through hole. The photoelectric encoder needn't consider separation distances between grating holes of first gratings, light can also be emitted into the second through hole from the first through hole, or the first through hole and the second through hole are separated completely. Therefore, counting accuracy can be improved by increasing the quantity of grating holes, and the counting accuracy is high.
Description
Technical field
The application relates to the encoder techniques field, particularly relates to a kind of photoelectric encoder.
Background technology
Photoelectric encoder is a kind of sensor that the geometry of machinery displacement in the rotating shaft is converted to pulse or digital quantity through opto-electronic conversion.This is to use maximum sensors at present, and photoelectric encoder is made up of grating encoder and photoelectric detection system.Grating encoder is on the plectane of certain diameter, to open several rectangular raster holes five equilibrium.Because grating encoder is coaxial with motor; When motor rotates; Grating encoder and motor be with speed rotation, and the detection through the photoelectric detection system is made up of electronic components such as light emitting diodes just can obtain pulse output signals, and the pulse number of exporting through calculating per second photoelectric encoder just can be known the rotating speed of current motor; And when using photoelectric encoder to count, can also count through the pulse number of photoelectric encoder output.
Use the quantity in the grating hole on precision that photoelectric encoder counts and the grating encoder relevant, the grating hole on the grating encoder is many more, and the precision of photoelectric encoder is high more.Through the research to prior art, the inventor finds: along with the increase in the grating hole on the grating encoder, the partition between the adjacent gratings hole will be more and more littler; Need this moment the size of light beam also more and more littler, otherwise the several gratings of bigger light beam possibility single pass hole, occurrence count is inaccurate; But along with reducing of light beam; The intensity of light beam also can reduce, and when being reduced to can't be discerned by photoelectric detection system the time, will cause incalculable problem.
The utility model content
In view of this; The application embodiment provides a kind of photoelectric encoder; Adopt the dicode dish to match; Can realize through the quantity that increases the grating hole improving counting precision, and it be inaccurate to avoid having the counting that exists when photoelectric encoder improves precision through the quantity that increases the grating hole now, even incalculable problem.
To achieve these goals, the technical scheme that provides of the application embodiment is following:
A kind of photoelectric encoder comprises: shell, first code-disc, second code-disc and rotating shaft, wherein:
Said shell comprises first shell and second shell that is connected with said first shell, forms inner chamber between said first shell and second shell; Said first shell is provided with first through hole that runs through said first shell; Said second shell is provided with second through hole relative with first lead to the hole site;
Said first code-disc and second code-disc are installed in the said inner chamber, and first shell, second shell, first code-disc and second code-disc are coaxial; Said first code-disc and shell fix, and said second code-disc is fixed in the said rotating shaft; Said rotating shaft runs through said shell, and is rotatably connected through bearing and said shell;
Be provided with first grating on the circumference of said first code-disc, second code-disc, and the seam of first grating on first code-disc and second code-disc is wide identical; The circumference at the circumference at first grating center place and first through hole center of circle place is a concentric circles on said first code-disc, second code-disc, and in first grating length in grating hole greater than the diameter of said first through hole.
Preferably, said first shell is provided with the third through-hole that runs through said first shell, and the center of circle of the third through-hole and first through hole is not on same circumference;
Second shell be provided with the fourth hole relative with the third through-hole position;
Be provided with second grating on the circumference of said first code-disc, second code-disc, and the seam of second grating on first code-disc and second code-disc is wide identical; The circumference at the circumference at second grating center place and third through-hole center of circle place is a concentric circles on said first code-disc, second code-disc, and in second grating length in grating hole greater than the diameter of said third through-hole.
Preferably, said first grating is wide different with the seam of second grating.
Preferably, said first code-disc and said second shell fix, and said rotating shaft runs through said second shell, and are rotatably connected with said second shell.
Preferably, said first shell is inlaid in second shell, or said second shell is inlaid in first shell.
Preferably, the end face of said first shell and second shell contacts, and first shell and second shell fix through welding, riveted joint, bolt or glue.
Preferably, the end face of said first shell is provided with annular groove, is provided with and the corresponding annular protrusion of said annular groove on said second shell.
Preferably, first grating on said second code-disc and second grating evenly distribute along the circumference of second code-disc; First grating and second grating on said first code-disc are the arc grating.
Preferably, said rotating shaft is connected with said second shell through bearing.
Preferably, the said second code-disc welding, riveted joint or glue fixing are in said rotating shaft.
Visible by above technical scheme; In this photoelectric encoder that the application embodiment provides; First shell is provided with first through hole, and second shell is provided with second through hole relative with first lead to the hole site, between first shell and second shell, is provided with first code-disc and second code-disc; And second code-disc and shell fix, and first code-disc and rotating shaft fix.On the circumference of first code-disc, second code-disc, first grating is set all, the seam of both first gratings is wide identical, and in first grating length in grating hole greater than the diameter of first through hole and second through hole.This photoelectric encoder in use; In first through hole, be provided with photoelectron emission device; In second through hole, be provided with photoelectric receiving arrangement (position of photoelectron emission device and photoelectric receiving arrangement can exchange) here, because first code-disc and shell fix, so turn to the grating hole when relative when second code-disc with the first code-disc grating hole; The light that photoelectron emission device sends can get into second through hole by the grating hole on first code-disc, second code-disc; At this moment diameter when the hole of grating less than through hole just has multi-beam and passes grating and get into second through hole, can not reduce the intensity of light beam; And can make photoelectric receiving arrangement receive illumination and open; And when second code-disc turns to that the partition between the grating hole is relative on the grating hole and first code-disc, because the seam of first grating is wide identical on first code-disc and second code-disc, then can the light between first through hole and second through hole all be sheltered from; Can make photoelectric receiving arrangement not receive illumination and turn-off, the photoelectric receiving arrangement that is provided with like this in second through hole just can be counted through the number of times that receives light.
Because the seam of first grating is wide identical on first code-disc and second code-disc; So this photoelectric encoder need not to consider the size cut off between the grating hole in first grating; When second code-disc rotates, all can realize making light to inject second through hole perhaps with cutting off fully between first through hole and second through hole from first through hole.Promptly this photoelectric encoder can be realized through the quantity that increases the grating hole improving counting precision, and it is inaccurate to avoid having the counting that exists when photoelectric encoder improves precision through the quantity that increases the grating hole now, even incalculable problem.
Description of drawings
In order to be illustrated more clearly in the application embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment that put down in writing among the application, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The blast structural representation of a kind of photoelectric encoder that Fig. 1 provides for the application embodiment.
Embodiment
In order to make those skilled in the art person understand the technical scheme among the application better; To combine the accompanying drawing among the application embodiment below; Technical scheme among the application embodiment is carried out clear, intactly description; Obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the application's protection.
The blast structural representation of a kind of photoelectric encoder that Fig. 1 provides for the application embodiment.
Of Fig. 1, this photoelectric encoder comprises: shell, first code-disc 4, second code-disc 3 and rotating shaft 5, wherein; Shell comprises first shell 1 and second shell 2; First shell 1 and second shell 2 are provided with cavity, and first code-disc 4 and second code-disc 3 are positioned at said cavity, and the center of circle of first shell 1, second shell 2, first code-disc 4, second code-disc 3 and rotating shaft 5 point-blank; Promptly five is coaxial, and the straight line at place, five centers of circle is an axis.
First shell 1 is provided with first through hole, 11, the second shells 2 that vertically run through first shell 1, and to be provided with the position relative with first through hole 11, and aperture second through hole 21 identical with first through hole 11.The position of first through hole 11 and third through-hole 21 is relative, and its effect is that photoelectron emission device and photoelectric receiving arrangement are installed respectively.In addition, on the outer wall of second shell 2, can also be provided with a plurality of mounting holes 23, the position that is used for second shell 2 (being the overall optical photoelectric coder) is fixed on needs of mounting hole 23.
First shell 1 and second shell 2 fix, and between has certain space, form a cavity that can hold first code-disc 4 and second code-disc 3.The fixed form of first shell 1 and second shell 2 has multiple, is inlaid in second shell 2 like first shell 1, and perhaps second shell 2 is inlaid in first shell 1; In addition; First shell 1 contacts with the end face of second shell 2, and fixes through welding, riveted joint, bolt or glue between the two, and on both contacted end faces; Can annular groove on the end face, can be provided with the annular protrusion that is complementary with annular groove on the other end.In the application embodiment, first shell 1 preferably is inlaid in second shell.
In first code-disc 4, the cavity of second code-disc 3 between first shell 1 and second shell 2; As shown in Figure 1; Be provided with the wide first identical grating 6 of seam on the circumference of first code-disc 4 and second code-disc 3; And the distance between first grating, 6 centers and the axis equals the distance between first through hole 11 and the axis, and promptly the circumference at the circumference at the center of first grating 6 (being the center in each grating hole) place and place, first through hole, 11 centers of circle is a concentric circles.The effect of first grating 6 is the light that blocks or open between first through hole 11 and second through hole 21, and the length of first grating 6 (i.e. the length in a grating hole) is greater than the diameter of first through hole 11.
In the application embodiment; First grating 6 on second code-disc evenly distributes along circumference; First grating 6 on first code-disc 4 can evenly distribute along circumference, also can be the arc grating, and when first grating 6 on first code-disc 4 is the arc grating; The length of arc is greater than the diameter of first through hole 11, and preferably first grating 6 on first code-disc 4 can comprise multistage arc grating.
First code-disc 4 can be fixed on first shell 1, also can be fixed on second shell, and after first code-disc 4 was fixed, first grating 6 on first code-disc 4 is corresponding with the position of first through hole 11.Second shell 2 is provided with shaft hole, and rotating shaft 5 one ends stretch in second shell 2, and end and second code-disc 3 fix.Second code-disc 3 can fix through the mode and the rotating shaft 5 of welding or riveted joint or glue, and is in the application embodiment, as shown in Figure 1; Second code-disc 3 is provided with 3 fixed orifices, and rotating shaft 5 is provided with 3 fixed legs 51, in addition; Rotating shaft 5 also comprises a fixture 52 that is provided with 3 fixed orifices, and fixedly the time, fixed leg 51 passes the through hole on second code-disc 3; Pass the through hole on the fixture 52 then; Just can second code-disc 3 be fixed with rotating shaft 5, in the application embodiment, rotating shaft 5 fixes through the bearing 8 and second shell 2.
This photoelectric encoder that the application embodiment provides, first code-disc 4 is fixed in the shell, and the position of first grating 6 on first code-disc 4 and first through hole 11 is relative; So in use, can shell be fixed, drive second code-disc 3 through rotating shaft 5 and rotate; Because first grating on first code-disc 4 is fixed between first through hole 11 and second through hole 21; When making light beam, can form grating, in addition because the seam of first grating 6 on first code-disc 4 and second code-disc 3 is wide identical from first through hole, 11 directives, second through hole 21; So when second code-disc 3 turns to the grating hole and grating hole on first code-disc 4 overlaps with rotating shaft 5; Just can make light beam inject second through hole 21, and when second code-disc 3 turn to grating cut off with first code-disc 4 on grating hole when coinciding, just can light beam all be blocked.So just can realize that when second code-disc 3 rotates along with rotation, light beam just can be interrupted and injects in second through hole 21, can count according to the break-make of the light between first through hole 11 and second through hole 21.
Therefore this photoelectric encoder need not to consider the size cut off between the grating hole in first grating, when second code-disc rotates, all can realize making light to inject second through hole or with partition fully between first through hole and second through hole from first through hole.Promptly this photoelectric encoder can be realized through the quantity that increases the grating hole improving counting precision, and it is inaccurate to avoid having the counting that exists when photoelectric encoder improves precision through the quantity that increases the grating hole now, even incalculable problem.
In addition, in another embodiment of the application, this photoelectric encoder can also have two or more counting degree of accuracy.
As shown in Figure 2; On first shell 1, can also be provided with the third through-hole 12 that vertically runs through first shell 1; Distance between the distance between the third through-hole center of circle and first shell, 1 center of circle and first through hole 11 and first shell, 1 center of circle is unequal; Be that the third through-hole center of circle belongs to the circle of first shell 1 and circle that first through hole, 11 centers of circle belong to first shell 1 is a concentric circles, but its diameter is different.On second shell 2, can also be provided with the fourth hole 22 relative with third through-hole.The position of first through hole 11 and third through-hole 21 is relative, and its effect is that photoelectron emission device and photoelectric receiving arrangement are installed.
Can also be provided with second grating 7 on the circumference of first code-disc 4 and second code-disc 3, and the seam of second grating 7 on first code-disc 4 and second code-disc 3 is wide identical.Distance between second grating, 7 centers and the axis equals the distance between third through-hole and the axis, and promptly the circumference at the circumference at the center of second grating 7 (being the center in each grating hole) place and place, the third through-hole center of circle is a concentric circles.The effect of second grating 7 is the light that blocks or open between third through-hole and the fourth hole 22, and the length in the grating hole in second grating 7 is greater than the diameter of third through-hole and fourth hole 22.In the application embodiment; Second grating 7 on second code-disc evenly distributes along circumference; Second grating 7 on first code-disc 4 can evenly distribute along circumference; Also can be the arc grating, and when second grating 7 on first code-disc 4 was the arc grating, the length of arc was greater than the diameter of third through-hole.And preferably second grating 7 on first code-disc 4 can comprise multistage arc grating.
Like this; This photoelectric encoder that the application embodiment provides; One cover photoelectron emission device and photoelectric receiving arrangement can be set in first through hole and second through hole, a cover photoelectron emission device and a photoelectric receiving arrangement can also be set in third through-hole and fourth hole again.And because second grating is wide different with the seam of first grating, so this photoelectric encoder has two kinds of different accuracies.In other embodiment of the application, through increasing the quantity of grating, photoelectric encoder can also have multiple different accuracy.
Visible by above technical scheme; In this photoelectric encoder that the application embodiment provides; First shell is provided with first through hole, and second shell is provided with second through hole relative with first lead to the hole site, between first shell and second shell, is provided with first code-disc and second code-disc; And second code-disc and shell fix, and first code-disc and rotating shaft fix.On the circumference of first code-disc, second code-disc, first grating is set all, the seam of both first gratings is wide identical, and in first grating length in grating hole greater than the diameter of first through hole and second through hole.This photoelectric encoder in use; In first through hole, be provided with photoelectron emission device, in second through hole, be provided with photoelectric receiving arrangement, because first code-disc and shell fix; So when second code-disc turns to the grating hole when relative with the first code-disc grating hole; The light that photoelectron emission device sends can get into second through hole by the grating hole on first code-disc, second code-disc, and at this moment the diameter when the hole of grating less than through hole just has multi-beam and pass grating and get into second through hole; Can not reduce the intensity of light beam; Can make photoelectric receiving arrangement receive light and open, and when second code-disc turns to that the partition between the grating hole is relative on the grating hole and first code-disc, because the seam of first grating is wide identical on first code-disc and second code-disc; Then can the light between first through hole and second through hole all be sheltered from, can make photoelectric receiving arrangement not receive light and turn-off.The photoelectric receiving arrangement that is provided with like this in second through hole can be counted through the number of times that receives light.
Because the seam of first grating is wide identical on first code-disc and second code-disc; So this photoelectric encoder need not to consider the size cut off between the grating hole in first grating; When second code-disc rotates; All can realize making light to inject second through hole perhaps with cutting off fully between first through hole and second through hole from first through hole; Promptly this photoelectric encoder can be realized through the quantity that increases the grating hole improving counting precision, and it is inaccurate to avoid having the counting that exists when photoelectric encoder improves precision through the quantity that increases the grating hole now, even incalculable problem.
The above only is the application's a preferred implementation, makes those skilled in the art can understand or realize the application.Multiple modification to these embodiment will be conspicuous to one skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the application or scope in other embodiments among this paper.Therefore, the application will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a photoelectric encoder is characterized in that, comprising: shell, first code-disc, second code-disc and rotating shaft, wherein:
Said shell comprises first shell and second shell that is connected with said first shell, forms inner chamber between said first shell and second shell; Said first shell is provided with first through hole that runs through said first shell; Said second shell is provided with second through hole relative with first lead to the hole site;
Said first code-disc and second code-disc are installed in the said inner chamber, and first shell, second shell, first code-disc and second code-disc are coaxial; Said first code-disc and shell fix, and said second code-disc is fixed in the said rotating shaft; Said rotating shaft runs through said shell, and is rotatably connected through bearing and said shell;
Be provided with first grating on the circumference of said first code-disc, second code-disc, and the seam of first grating on first code-disc and second code-disc is wide identical; The circumference at the circumference at first grating center place and first through hole center of circle place is a concentric circles on said first code-disc, second code-disc, and in first grating length in grating hole greater than the diameter of said first through hole.
2. scrambler according to claim 1 is characterized in that, said first shell is provided with the third through-hole that runs through said first shell, and the center of circle of the third through-hole and first through hole is not on same circumference;
Second shell be provided with the fourth hole relative with the third through-hole position;
Be provided with second grating on the circumference of said first code-disc, second code-disc, and the seam of second grating on first code-disc and second code-disc is wide identical; The circumference at the circumference at second grating center place and third through-hole center of circle place is a concentric circles on said first code-disc, second code-disc, and in second grating length in grating hole greater than the diameter of said third through-hole.
3. scrambler according to claim 2 is characterized in that, said first grating is wide different with the seam of second grating.
4. scrambler according to claim 1 and 2 is characterized in that, said first code-disc and said second shell fix, and said rotating shaft runs through said second shell, and is rotatably connected with said second shell.
5. scrambler according to claim 1 and 2 is characterized in that, said first shell is inlaid in second shell, or said second shell is inlaid in first shell.
6. scrambler according to claim 1 and 2 is characterized in that, the end face of said first shell and second shell contacts, and first shell and second shell fix through welding, riveted joint, bolt or glue.
7. code-disc according to claim 6 is characterized in that the end face of said first shell is provided with annular groove, is provided with and the corresponding annular protrusion of said annular groove on said second shell.
8. scrambler according to claim 2 is characterized in that, first grating on said second code-disc and second grating evenly distribute along the circumference of second code-disc; First grating and second grating on said first code-disc are the arc grating.
9. according to claim 2 or 3 described scramblers, it is characterized in that said rotating shaft is connected with said second shell through bearing.
10. scrambler according to claim 1 is characterized in that, the said second code-disc welding or riveted joint, bolt or glue fixing are in said rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202068481U CN202126269U (en) | 2011-06-17 | 2011-06-17 | Photoelectric encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202068481U CN202126269U (en) | 2011-06-17 | 2011-06-17 | Photoelectric encoder |
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| Publication Number | Publication Date |
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| CN202126269U true CN202126269U (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202068481U Expired - Lifetime CN202126269U (en) | 2011-06-17 | 2011-06-17 | Photoelectric encoder |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276525A (en) * | 2013-06-08 | 2013-09-04 | 福建睿能电子有限公司 | Computerized flat knitting machine and code disc assembly |
| CN103616040A (en) * | 2013-11-23 | 2014-03-05 | 冶金自动化研究设计院 | Combined type optical-electricity encoder with copper code disc |
| CN104579291A (en) * | 2015-01-07 | 2015-04-29 | 江苏华途数控科技有限公司 | Photoelectricity band switch |
| CN105203051A (en) * | 2015-10-08 | 2015-12-30 | 上海鲍麦克斯电子科技有限公司 | Penetrating type external encoder |
| CN105393123A (en) * | 2013-07-23 | 2016-03-09 | 京都电子工业株式会社 | Rotational speed detection device, viscosity measurement device using said device, rotational speed detection method, and rotating body used in said method |
| CN106816993A (en) * | 2017-02-28 | 2017-06-09 | 浙江永发机电有限公司 | Frequency control motor |
| CN106816992A (en) * | 2017-02-28 | 2017-06-09 | 浙江永发机电有限公司 | The survey rotation mechanism of frequency control motor |
| WO2019085213A1 (en) * | 2017-11-03 | 2019-05-09 | 深圳市创新先进科技有限公司 | Fixed-point working position changing device |
| CN110108896A (en) * | 2019-06-27 | 2019-08-09 | 成都理工大学 | One kind being suitable for high speed rotation magnetic-suspension main-shaft speed measuring device |
| CN112833927A (en) * | 2021-01-16 | 2021-05-25 | 海安市申菱电器制造有限公司 | Display type photoelectric encoder |
| CN113405581A (en) * | 2021-05-27 | 2021-09-17 | 上海五钢设备工程有限公司 | Encoder mounting seat |
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2011
- 2011-06-17 CN CN2011202068481U patent/CN202126269U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276525A (en) * | 2013-06-08 | 2013-09-04 | 福建睿能电子有限公司 | Computerized flat knitting machine and code disc assembly |
| CN105393123A (en) * | 2013-07-23 | 2016-03-09 | 京都电子工业株式会社 | Rotational speed detection device, viscosity measurement device using said device, rotational speed detection method, and rotating body used in said method |
| CN103616040A (en) * | 2013-11-23 | 2014-03-05 | 冶金自动化研究设计院 | Combined type optical-electricity encoder with copper code disc |
| CN104579291A (en) * | 2015-01-07 | 2015-04-29 | 江苏华途数控科技有限公司 | Photoelectricity band switch |
| CN105203051A (en) * | 2015-10-08 | 2015-12-30 | 上海鲍麦克斯电子科技有限公司 | Penetrating type external encoder |
| CN105203051B (en) * | 2015-10-08 | 2018-11-30 | 上海鲍麦克斯电子科技有限公司 | A kind of external encoder of penetration |
| CN106816992A (en) * | 2017-02-28 | 2017-06-09 | 浙江永发机电有限公司 | The survey rotation mechanism of frequency control motor |
| CN106816993A (en) * | 2017-02-28 | 2017-06-09 | 浙江永发机电有限公司 | Frequency control motor |
| WO2019085213A1 (en) * | 2017-11-03 | 2019-05-09 | 深圳市创新先进科技有限公司 | Fixed-point working position changing device |
| CN110108896A (en) * | 2019-06-27 | 2019-08-09 | 成都理工大学 | One kind being suitable for high speed rotation magnetic-suspension main-shaft speed measuring device |
| CN110108896B (en) * | 2019-06-27 | 2023-11-24 | 成都理工大学 | Speed measuring device suitable for high-speed rotating magnetic suspension main shaft |
| CN112833927A (en) * | 2021-01-16 | 2021-05-25 | 海安市申菱电器制造有限公司 | Display type photoelectric encoder |
| CN112833927B (en) * | 2021-01-16 | 2023-01-06 | 海安市申菱电器制造有限公司 | Display type photoelectric encoder |
| CN113405581A (en) * | 2021-05-27 | 2021-09-17 | 上海五钢设备工程有限公司 | Encoder mounting seat |
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Owner name: ZHEJIANG WEIRONG ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHEJIANG WEIRONG ELECTRONIC CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: To the north of Cangnan County Industrial Park River Road Cangnan Lingxi County of Wenzhou City, Zhejiang province 325000 Patentee after: Zhejiang Wei Rong electronics technology limited company Address before: To the north of Cangnan County Industrial Park River Road Cangnan Lingxi County of Wenzhou City, Zhejiang province 325000 Patentee before: Zhejiang Weirong Electronic Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325000 North of Tanghe Road, Cangnan County Industrial Park, Lingxi Town, Cangnan County, Wenzhou City, Zhejiang Province Patentee after: Polytron Technologies Inc Address before: 325000 North of Tanghe Road, Cangnan County Industrial Park, Lingxi Town, Cangnan County, Wenzhou City, Zhejiang Province Patentee before: Zhejiang Wei Rong electronics technology limited company |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120125 |