CN202866577U - Revolving-door signal switching device - Google Patents
Revolving-door signal switching device Download PDFInfo
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- CN202866577U CN202866577U CN 201220540557 CN201220540557U CN202866577U CN 202866577 U CN202866577 U CN 202866577U CN 201220540557 CN201220540557 CN 201220540557 CN 201220540557 U CN201220540557 U CN 201220540557U CN 202866577 U CN202866577 U CN 202866577U
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- collector ring
- encoder
- revolving door
- ring
- gear
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Abstract
The utility model discloses a revolving-door signal switching device which comprises an encoder, a collecting ring and a switching mechanism. The switching mechanism is used for being coupled with the encoder and the collecting ring to enable the collecting ring and the encoder to drive synchronously. The revolving-door signal switching device is novel and compact in structure and beneficial for prolonging of service life and improving performance. Furthermore, the structure that the collecting ring and the encoder are transversely arranged side by side is adopted, the problem of the installation height is effectively solved, service life of the collecting ring is greatly prolonged, and cost is lowered.
Description
Technical field
The utility model relates to technical field of electricity, refers to especially a kind of revolving door signal adapting device.
Background technology
Revolving door is because it gives that the people is generous, style and luxurious sensation, and can realize revolving door and the staggered function of using of level and smooth door, and it is applied to the public arenas such as hotel, megastore, airport, office building more and more widely.Along with the lifting of customer demand and safety standard, control and the continuous progress of drive technology, revolving door is also more and more higher to the requirement of the transmission of electric power, signal and position signalling Detection ﹠ Controling.
Generally, high performance revolving door all uses collector ring and encoder component, improves its combination property; The calibration signal of described encoder is used for locating the Detection ﹠ Controling of more accurate position, angular speed calculation and position; The function of described collector ring is that the power supply on the static component and the signal of telecommunication are transferred on the rotary part reliably by conducting ring and brush, thereby realizes motion and the control of rotary part.Be subjected to the restriction of the minimum setting height(from bottom) of revolving door canopy, remove the height of deciding core flange and level and smooth door hoisting space, the height of collector ring and encoder component is less, more is convenient to installation, maintenance and operation, the application life that also is conducive to reduce cost and improves accessory.The collector ring of Design and manufacture structure excellence and encoder composite member are one of key technologies of revolving door.
Existing revolving door, the canopy minimum constructive height generally is no more than 300mm, removes outside the height of deciding the required lifting of the core flange peace slide about 200mm in space, and collector ring and encoder component are then installed in the residual altitude space.In order collector ring and encoder component to be installed in limited height space, usually adopt the combination of disc type collector ring and encoder and ring type collector ring and two kinds of combining forms of encoder combination.
With reference to accompanying drawing 1, be depicted as disc type collector ring 6 and encoder 1 combination schematic diagram.Both vertically superpose and are positioned at the center of rotation of revolving door; Disc type collector ring 6 is comprised of copper conducting ring 4, isolator 5, brush 2 and brush holder 3; Conducting ring 4 is with one heart successively to external expansion.During work, around the rotation of the collector ring center of circle, the transmission of electric power and signal is carried out on sliding-contact conducting ring 4 surfaces to brush 2 synchronously; Encoder 1 carries out the Detection ﹠ Controling of angular speed calculation and position with collector ring 6 rotating part synchronous rotaries.Whole height is general≤and 80mm, satisfy instructions for use.
The shortcoming of disc type collector ring and encoder combination is, the restriction that this combining form has solved setting height(from bottom) in the mode that increases the transverse horizontal area but realizes the compression of height dimension in the mode that shortens accessory application life.Its reason is, disc type collector ring, its conducting ring are with one heart successively to external expansion, every expansion one circle, circumference circle increases certain-length, and brush angle speed is consistent, the linear velocity of outer ring brush causes the frayed degree of outer ring conducting ring and brush even more serious much larger than inner ring, reduces its application life.The outer shroud of disc type collector ring and interior ring life-span differ larger, and the life-span of outer shroud has determined again the life-span of whole collector ring, so if use noble metal, can because of the short material of wasting of the life-span of collector ring outer ring conducting ring, increase cost.
With reference to accompanying drawing 2, be depicted as ring type collector ring 6 and encoder 1 combination schematic diagram, encoder is positioned at the collector ring ring body, and both axis of rotation axle center are identical; Ring type collector ring 6 is comprised of copper conducting ring 4, isolator 5, precious metal electric brush 2 and brush holder 3; The ring body hollow position is placed encoder 1.
With reference to accompanying drawing 3, be depicted as the top view of ring type collector ring 6.During work, precious metal electric brush 2 contact conducting ring 4 transferring electric powers and signals, encoder 1 carries out detection and the control of angular speed calculation, position.Whole height also can≤80mm, satisfy instructions for use.
The shortcoming of ring type collector ring and encoder combination is that this combining form conducting ring vertical array do not have the inconsistent situation of brush wire speed, but built-in encoder has increased the diameter of conducting ring, can reduce application life equally; Secondly, as shown in Figure 3, conducting ring ring body radius increases, and corresponding precious metal electric brush length increases, and causes cost to increase; And, because encoder is built in the current collection ring body, under the not good state of isolation, code device signal is formed disturb easily.
The utility model content
In view of this, the purpose of this utility model is to propose a kind of revolving door signal adapting device, its compact conformation, and the performance that is conducive to prolong collector ring and encoder component application life and improves this assembly.
A kind of revolving door signal adapting device based on above-mentioned purpose the utility model provides comprises encoder, collector ring and changeover mechanism; Described changeover mechanism is used for being coupled described encoder and collector ring, so that described collector ring and encoder Synchronous Transmission.
In one embodiment, described collector ring profile is cylindrical.
In another embodiment, described collector ring comprises a plurality of strong conducting rings with a plurality of weakly conducting rings and becomes from top to bottom coaxial pillar to arrange, and isolated by the insulating isolation ring insulation between described conducting ring.
In another embodiment, described strong conducting ring is that 9 and described weakly conducting ring are 3.
In another embodiment, described collector ring comprise vertical setting brush holder and with described conducting ring a plurality of brushes and arranging from top to bottom one to one.
In another embodiment, described encoder is incremental encoder.
In another embodiment, described encoder comprises the encoder rotating shaft, described collector ring comprises collector ring rotation mandrel, described changeover mechanism comprises the encoder gear that links to each other with described encoder rotating shaft and collector ring gear, described encoder gear and the engagement of collector ring gear that is rotationally connected with described collector ring rotation mandrel.
In another embodiment, described collector ring comprises the collector ring fixed housing, itself and the described collector ring gear structure that is formed in one, and be assemblied on the described collector ring rotation mandrel by rolling bearing.
In another embodiment, it also comprises a base, and described collector ring rotation mandrel, encoder and base are fixed as an integral body; Described base is fixedly connected with revolving door, and the axis of described collector ring rotation mandrel overlaps with the revolving door rotation centerline.
In another embodiment, described encoder comprises the encoder rotating shaft, described collector ring comprises collector ring rotation mandrel, described changeover mechanism comprises the encoder running roller that links to each other with the encoder rotating shaft and rotate around this rotating shaft and links to each other with collector ring rotation mandrel and around the collector ring running roller of this rotating shaft rotation, described encoder running roller is connected by a belt transmission with the collector ring running roller; Perhaps, described changeover mechanism comprises the encoder gear that links to each other with described encoder rotating shaft and the collector ring gear that is rotationally connected with described collector ring rotation mandrel, and described encoder gear is connected by a chain drive with the collector ring gear.
Can find out from above, a kind of revolving door signal adapting device that the utility model provides, its novel structure, compactness are conducive to increase the service life and improve performance; Further, adopt the arrangement architecture laterally arranged side by side of pillar collector ring and encoder, when effectively solving setting height(from bottom), the application life of greatly having improved collector ring, and reduce cost.
Preferably, described collector ring links to each other with encoder, is not to adopt a kind of simple vertical stack or built-in form, and it makes the placed on it and laterally side by side arrangement of collector ring and encoder by a kind of base of design; Collector ring gear the absolute coding device gear with encoder below into a single integrated structure with the collector ring fixed housing is meshed, and realizes the synchronous relative motion of collector ring and encoder.Described collector ring adopts pole structure, takies a small amount of height space and increases the service life; And further, described brush adopts noble metal still less, has reduced cost of production; And described brush adopt simultaneously abrasion resistance and conductibility all good brush can transmit more reliably power electric and signal.The structure of collector ring excellence and good conduction consumptive material are longer than disc type collector ring and ring type collector ring application life greatly, and have the good function of electric power and signal transmission; By the encoder of gear engagement, the different ad-hoc locations of revolving door can be set accurately according to actual operation requirements, record accurately the number of revolutions of revolving door, and the data of record are carried out detection and the control of angular speed calculation, position.
Better, described collector ring rotation mandrel is positioned at the revolving door center of rotation, described base is fixed on the rotating gate body, and the synchronous rotary of base, collector ring rotation mandrel, encoder and rotating gate body makes also relative rotation of collector ring by the encoder gear engagement of encoder bottom.This combination structure, collecting ring is selected rationally, and consumables cost is low, can increase the service life; Encoder can be realized closed loop, signals collecting, processing and the correction of a plurality of positions, and carries out angular speed calculation etc., embodies with digitized form.This excellent combination body structure has superior functional performance, and is more economical, more applicable.
Description of drawings
Fig. 1 is disc type collector ring and the encoder combination schematic diagram of prior art 1;
Fig. 2 is ring type collector ring and the encoder combination schematic diagram of prior art 2;
Fig. 3 is the ring type collector ring top view of prior art 2;
Fig. 4 is the front view of revolving door signal adapting device embodiment provided by the utility model;
Fig. 5 is the top view of revolving door signal adapting device embodiment provided by the utility model;
Fig. 6 is the sectional view of revolving door signal adapting device embodiment provided by the utility model;
Fig. 7 is the revolving door control system schematic diagram of revolving door signal adapting device embodiment provided by the utility model.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
A kind of revolving door signal adapting device provided by the utility model comprises encoder, collector ring and changeover mechanism; Described changeover mechanism is used for being coupled described encoder and collector ring, so that described collector ring and encoder Synchronous Transmission.
With reference to accompanying drawing 4 to 6, be respectively front view, top view and the sectional view of revolving door signal adapting device embodiment provided by the utility model.
Described revolving door signal adapting device comprises encoder 1, collector ring 6 and changeover mechanism 7; Described encoder 1 comprises encoder rotating shaft 15, described collector ring 6 profiles are cylindrical, comprise brush 2, the brush holder 3 that vertically arranges, conducting ring 4, collector ring fixed housing 8, collector ring rotation mandrel 9, wherein, conducting ring 4 comprises a plurality of strong conducting rings with a plurality of weakly conducting rings and becomes from top to bottom coaxial pillar to arrange, and 4 of described conducting rings are by insulating isolation ring insulation isolation, with described conducting ring 4 one to one a plurality of brushes 2 arrange from top to bottom; Described changeover mechanism 7 comprises the encoder gear 10 that is fixedly linked with encoder rotating shaft 15 and the collector ring gear 11 that is rotationally connected with collector ring rotation mandrel 9, described collector ring fixed housing 8 and described collector ring gear 11 structure that is formed in one; By the engagement of described encoder gear 10 with collector ring gear 11, with described encoder 1 and collector ring 6 couplings, so that described collector ring 6 and encoder 1 Synchronous Transmission.
Better, described revolving door signal adapting device also comprises a base 16, rolling bearing 17, described collector ring rotation mandrel 9, encoder 1 and base 16 are fixedly connected as an integral body; The axis of described collector ring rotation mandrel 9 overlaps with the revolving door rotation centerline, and described base 16 bottoms are fixedly connected with the rotating mechanism (being the part of revolving door rotation) of revolving door; And, described collector ring fixed housing 8 is assemblied on the described collector ring rotation mandrel 9 by described rolling bearing 17 with the integrated formed structure of described collector ring gear 11, and described integrated formed structure is fixedly connected with the inside fixed mechanism (being the inner fixed part of revolving door) of described revolving door.
Preferably, described encoder 1 is incremental encoder; Described collector ring 6 is comprised of 9 strong conducting rings and 3 weakly conducting rings, and becomes from top to bottom pillar to arrange, and 4 of each conducting rings are separated by by insulating isolation ring; Collector ring rotation mandrel 9 is positioned at the center of collector ring 6; Weakly conducting ring brush adopts the high-quality precious metal material, and transmission performance is good, and strong conducting ring brush adopts large electric current wear-resistant conductive material, and higher load transmittability is arranged.
With reference to the accompanying drawings 7, be the revolving door control system schematic diagram of revolving door signal adapting device embodiment provided by the utility model.
Described revolving door control system comprises master controller, outside pilot controller, revolving door signal adapting device and output; Described revolving door signal adapting device then is comprised of collector ring, encoder and changeover mechanism.
The revolving door that described revolving door signal adapting device is applied to, its described outside pilot controller connects the external stability mechanism of the described revolving door of control, described master controller is connected the rotating mechanism of controlling described revolving door with output, described revolving door signal adapting device, be the combination of collector ring, encoder and changeover mechanism, become the signal transmitting apparatus of a kind of described external stability mechanism and described rotating mechanism.Adopt described revolving door signal adapting device and cooperate the revolving door of described control system, its course of work is as follows:
Described outside pilot controller gather external sensor signal, functional requirement signal and by conducting ring lead-in wire 12(with reference to the accompanying drawings 6) transmit these two kinds of signals and electric power to described collector ring 6, described collector ring 6 receive these signals and electric power and with it by brush-lead 14(with reference to the accompanying drawings 6) transfer to described master controller, described master controller receives this signal and electric power and carries out corresponding signal and process, for output.In the whole process, the stationary singnal of described outside pilot controller collection is transferred to dynamic described master controller by described collector ring, thereby finishes the transmission of moving electric power and signal, makes the revolving door automatic rotation.
When the rotating mechanism of revolving door is done the integrally rotated motion of circular path, because described collector ring rotation mandrel 9, encoder 1 and base 16 are fixed as an integral body, the axis of described collector ring rotation mandrel 9 overlaps with the revolving door rotation centerline, and described base 16 bottoms are fixedly connected with the rotating mechanism of revolving door; When collector ring base 16 with the rotation of revolving door rotating mechanism around the revolution of described revolving door rotation centerline and described collector ring rotation mandrel 9 when described revolving door rotation centerline rotate (also being rotation simultaneously), the encoder 1 that is fixedly connected with base 16 and the encoder gear 10 that is fixedly connected with encoder rotating shaft 15 are undertaken around rotatablely moving that described revolving door rotation centerline revolves round the sun by described base 16 and rotarily driving of body of door; When producing displacement when encoder gear 10 because around described revolving door rotation centerline rotation, again because described collector ring fixed housing 8 and the inner fixed mechanism of described revolving door are fixedly connected with (being that its relative ground is static) and described collector ring fixed housing 8 and collector ring gear 11 structure that is formed in one, encoder gear 10 meshes with described collector ring gear 11 simultaneously, so that described encoder gear 10 begins the axis rotation around described encoder 1 simultaneously, and because described encoder gear 10 is fixedly connected with encoder rotating shaft 15, therefore drive described encoder rotating shaft 15 also around the axis rotation of described encoder 1, the dead in line of the axis of described encoder rotating shaft 15 and encoder 1, thus realize that encoder rotating shaft 15 and collector ring rotate the relative motion between the mandrel 9.
And further, encoder adopts incremental encoder, its outer signal line 13(with reference to the accompanying drawings 6) link to each other with described master controller, encoder 1 converts its swing offset to the periodic signal of telecommunication, again the signal of telecommunication is converted to count pulse, calculate, Detection ﹠ Controling are carried out in its position in order to the angular velocity to revolving door; Encoder 1 then records a circle from circling, on the installation mainboard of its record data synchronous transfer to the described master controller, and the data of display encoder 1 record in digital form; Encoder 1 inner circumferential is divided into 2000 portionings such as grade, same form with numeral embodies on the installation mainboard of these portionings in described master controller, according to these portionings, the position that the portionings such as mainboard can be accurately be installed at described master controller set revolving door all require the ad-hoc location of function, establishing the position and can feed back to encoder 1 on the described master controller simultaneously realizes differently on the encoder 1 establishing a difference of control gate body and establishing the position.And meanwhile, the rotating part that the electric power that described collector ring 6 collects the said external pilot controller again and signal are transferred to revolving door.
Can find out by above-mentioned, encoder effect in the described revolving door signal adapting device is, its calibration signal is used for the rotation parameter of record revolving door, can accurately set the ad-hoc location of revolving door, and it is carried out the Detection ﹠ Controling of angular speed calculation, position; The effect of collector ring then is, the power supply on the static component and the signal of telecommunication is transferred on the rotating mechanism reliably by conducting ring and brush, thus motion and the control of realization rotating mechanism.
A kind of revolving door signal adapting device provided by the utility model is the combination of collector ring and encoder, realizes the transmitting of external power and signal, realizes simultaneously setting and detection, angular speed calculation and the control of door body position.Further, encoder, encoder gear, base and collector ring rotation mandrel are with rotating gate body synchronous rotary; Collector ring and encoder are by realizing relative static and rotation with the collector ring gear of collector ring fixed housing one and the engagement of encoder gear; Described collector ring effectively transmits power electric and the signal of revolving door, and described encoder then calculates the angular velocity of revolving door, the Detection ﹠ Controling of position.
A kind of revolving door signal adapting device provided by the utility model, its novel structure, compactness are conducive to increase the service life and improve performance; Further, adopt the arrangement architecture laterally arranged side by side of pillar collector ring and encoder, when effectively solving setting height(from bottom), the application life of greatly having improved collector ring, and reduce cost.
Preferably, described collector ring links to each other with encoder, is not to adopt a kind of simple vertical stack or built-in form, and it makes the placed on it and laterally side by side arrangement of collector ring and encoder by a kind of base of design; Collector ring gear the absolute coding device gear with encoder below into a single integrated structure with the collector ring fixed housing is meshed, and realizes the synchronous relative motion of collector ring and encoder.Described collector ring adopts pole structure, takies a small amount of height space and increases the service life; And further, described brush adopts noble metal still less, has reduced cost of production; And described brush adopt simultaneously abrasion resistance and conductibility all good brush can transmit more reliably power electric and signal.The structure of collector ring excellence and good conduction consumptive material are longer than disc type collector ring and ring type collector ring application life greatly, and have the good function of electric power and signal transmission; By the encoder of gear engagement, the different ad-hoc locations of revolving door can be set accurately according to actual operation requirements, record accurately the number of revolutions of revolving door, and the data of record are carried out detection and the control of angular speed calculation, position.
Better, described collector ring rotation mandrel is positioned at the revolving door center of rotation, described base is fixed on the rotating gate body, and the synchronous rotary of base, collector ring rotation mandrel, encoder and rotating gate body makes also relative rotation of collector ring by the encoder gear engagement of encoder bottom.This combination structure, collecting ring is selected rationally, and consumables cost is low, can increase the service life; Encoder can be realized closed loop, signals collecting, processing and the correction of a plurality of positions, and carries out angular speed calculation etc., embodies with digitized form.This excellent combination body structure has superior functional performance, and is more economical, more applicable.
Base designs described in above-described embodiment, one of its effect is to be fixed as an integral body for collector ring being rotated mandrel, encoder, encoder gear and base, can expect, also can respectively encoder be linked to each other with the rotating gate body with collector ring rotation mandrel, also can realize this purpose of this utility model, therefore can not be used for limiting the utility model protection domain; And similarly transition form also should belong to the utility model protection domain.
In above-described embodiment, described collector ring fixed housing and the described collector ring gear structure that is formed in one, one of effect is to simplify manufacturing process, enhances productivity, but is not that essential features of the present utility model can not be used for limiting the utility model protection domain; And similarly transition form also should belong to the utility model protection domain.
In above-described embodiment, described collector ring profile is cylindrical, certainly in the situation that can reach the similar technology effect; also can adopt other shapes; or those skilled in the art's similar transition form that can be easy to expect, and, also should belong to the utility model protection domain.
In above-described embodiment, the integrative-structure of described collector ring shell and collector ring gear is assemblied in one of effect on the described collector ring rotation mandrel by rolling bearing and is to reduce radial pressure and prevents the collector ring rotary core diameter of axle to movement, but is not that essential features of the present utility model can not be used for limiting the utility model protection domain; And similarly transition form also should belong to the utility model protection domain.
It is pointed out that a kind of revolving door signal adapting device provided by the utility model, it can also have another kind of implementation:
Described revolving door signal adapting device comprises encoder, collector ring and changeover mechanism; Described changeover mechanism comprises the encoder running roller that links to each other with the encoder rotating shaft and rotate around this rotating shaft and links to each other with collector ring rotation mandrel and around the collector ring running roller of this rotating shaft rotation, described encoder running roller is connected by a belt transmission with the collector ring running roller, namely be used for being coupled described encoder and collector ring, so that described collector ring and encoder Synchronous Transmission.Perhaps described changeover mechanism comprises the encoder gear that links to each other with described encoder rotating shaft and the collector ring gear that is rotationally connected with described collector ring rotation mandrel, described encoder gear is connected by a chain drive with the collector ring gear, namely be used for being coupled described encoder and collector ring, so that described collector ring and encoder Synchronous Transmission.
Can find out, adopt above-mentioned dual mode, all can realize the purpose of this utility model, and, above-mentioned except with the feature arranged side by side of present embodiment other additional technical features, can be combined with present embodiment too and produce better technique effect.All should belong to protection domain of the present utility model.Certainly, also can adopt other similarly and those of ordinary skills' coupled modes of being easy to expect finish the signal converting of collector ring and encoder.
Those of ordinary skill in the field are to be understood that: the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle; any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. a revolving door signal adapting device is characterized in that, comprises encoder, collector ring and changeover mechanism; Described changeover mechanism is used for being coupled described encoder and collector ring, so that described collector ring and encoder Synchronous Transmission.
2. revolving door signal adapting device according to claim 1 is characterized in that, described collector ring profile is cylindrical.
3. revolving door signal adapting device according to claim 2 is characterized in that, described collector ring comprises a plurality of strong conducting rings with a plurality of weakly conducting rings and becomes from top to bottom coaxial pillar to arrange, and isolated by the insulating isolation ring insulation between described conducting ring.
4. revolving door signal adapting device according to claim 3 is characterized in that, it is 3 with described weakly conducting ring that described strong conducting ring is 9.
5. revolving door signal adapting device according to claim 4 is characterized in that, described collector ring comprise vertical setting brush holder and with described conducting ring a plurality of brushes and arranging from top to bottom one to one.
6. revolving door signal adapting device according to claim 1 is characterized in that, described encoder is incremental encoder.
7. according to claim 1 to the described revolving door signal adapting device of 6 any one, it is characterized in that, described encoder comprises the encoder rotating shaft, described collector ring comprises collector ring rotation mandrel, described changeover mechanism comprises the encoder gear that links to each other with described encoder rotating shaft and collector ring gear, described encoder gear and the engagement of collector ring gear that is rotationally connected with described collector ring rotation mandrel.
8. revolving door signal adapting device according to claim 7 is characterized in that, described collector ring comprises the collector ring fixed housing, itself and the described collector ring gear structure that is formed in one, and be assemblied on the described collector ring rotation mandrel by rolling bearing.
9. revolving door signal adapting device according to claim 8 is characterized in that, it also comprises a base, and described collector ring rotation mandrel, encoder and base are fixed as an integral body; Described base is fixedly connected with revolving door, and the axis of described collector ring rotation mandrel overlaps with the revolving door rotation centerline.
10. according to claim 1 to the described revolving door signal adapting device of 6 any one, it is characterized in that, described encoder comprises the encoder rotating shaft, described collector ring comprises collector ring rotation mandrel, described changeover mechanism comprises the encoder running roller that links to each other with the encoder rotating shaft and rotate around this rotating shaft and links to each other with collector ring rotation mandrel and around the collector ring running roller of this rotating shaft rotation, described encoder running roller is connected by a belt transmission with the collector ring running roller; Perhaps, described changeover mechanism comprises the encoder gear that links to each other with described encoder rotating shaft and the collector ring gear that is rotationally connected with described collector ring rotation mandrel, and described encoder gear is connected by a chain drive with the collector ring gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220540557 CN202866577U (en) | 2012-10-22 | 2012-10-22 | Revolving-door signal switching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220540557 CN202866577U (en) | 2012-10-22 | 2012-10-22 | Revolving-door signal switching device |
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| CN202866577U true CN202866577U (en) | 2013-04-10 |
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| CN 201220540557 Expired - Fee Related CN202866577U (en) | 2012-10-22 | 2012-10-22 | Revolving-door signal switching device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943608A (en) * | 2012-10-22 | 2013-02-27 | 北京信步自动门有限公司 | Signal switching device of revolution door |
| CN106437387A (en) * | 2016-08-30 | 2017-02-22 | 广东金大田家居股份有限公司 | Safe revolving door with movable door frame drive brake |
-
2012
- 2012-10-22 CN CN 201220540557 patent/CN202866577U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943608A (en) * | 2012-10-22 | 2013-02-27 | 北京信步自动门有限公司 | Signal switching device of revolution door |
| CN106437387A (en) * | 2016-08-30 | 2017-02-22 | 广东金大田家居股份有限公司 | Safe revolving door with movable door frame drive brake |
| CN106437387B (en) * | 2016-08-30 | 2018-03-23 | 广东金大田家居股份有限公司 | A kind of safe rotating gate |
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Granted publication date: 20130410 Termination date: 20151022 |
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| EXPY | Termination of patent right or utility model |