CN101834071B - Special safety monitoring intelligent switch for industrial special door - Google Patents
Special safety monitoring intelligent switch for industrial special door Download PDFInfo
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- CN101834071B CN101834071B CN2010101550496A CN201010155049A CN101834071B CN 101834071 B CN101834071 B CN 101834071B CN 2010101550496 A CN2010101550496 A CN 2010101550496A CN 201010155049 A CN201010155049 A CN 201010155049A CN 101834071 B CN101834071 B CN 101834071B
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Abstract
The invention relates to a special safety monitoring intelligent switch for an industrial special door which belongs to the technical field of the processing of the industrial special door. The intelligent switch comprises a base plate, and a contact module is arranged on the upper end of the base plate. The switch is characterized in that a sliding contact disk composed of an upper copper ring and a lower copper ring is arranged on the base plate of the non-roller side of an arm sensor, the upper and lower copper rings are formed by copper plates; a wire is arranged in the arm sensor, the long end of the sliding contact disk side of the arm sensor contacts with the lower copper ring; a magnetic switch and a jumper switch are arranged under the contact module, the copper plates of the upper copper ring are separately connected with the contacts on one side of the jumper switch, the contacts on the other side of the jumper switch are connected with one end of the magnetic switch, the other end of the magnetic switch is connected with a 0V power source; and the copper plates of the lower copper ring are connected with the input end of the contact module, and the output end of the contact module and the end, connected with the 0V power source, of magnetic switch are separately connected with a safety monitoring circuit.
Description
Technical field:
The invention belongs to the industrial special door processing technique field, particularly relate to the special safety monitoring intelligent switch that uses on a kind of industrial special door control system.
Background technology:
At present; Existing industrial special door control system; The feedback of signal mostly is directed to travel switch or transducer, and industrial special door often uses in the extremely abominable industrial occasions of environment, can't thoroughly avoid the interference of the factors such as scratching, vibration and peripheral high-intensity magnetic field of dust, low temperature or high temperature, machinery; And the influence of any unfavorable factor; All possibly cause the deviation of the position of the switch, the damage of switching function, the failure or the mistake of signal feedback, and this will cause driving mechanism (drive motors) misoperation of industrial special door, bring great potential safety hazard; Gently then the opposite house body causes damage, and is heavy then cause casualties or the damage of valuable equipment instrument.
One of scheme that overcomes the above problems is in driving mechanism, to use high-precision stepper motor to cooperate with encoder, but the stepper motor cost of high-power high-accuracy is very high, and encoder is very high to environmental requirement, keeps in repair extremely difficult.Low cost, high reliability, the high security of this and market demands and can adapt to harsh industrial environment and run in the opposite direction, incompatible as fire and water.
Other schemes are such as adopting devices such as radar monitoring location, laser positioning, and same the existence requires height to environment for use, and cost is expensive, and fail safe is difficult to problems such as assurance, is not inconsistent with market demands.
Summary of the invention:
To the problem that existing industrial special door control system exists, the present invention provides a kind of special safety monitoring intelligent switch for industrial special door, and cost is low, reliability is high and realize pinpoint purpose to reach; Simultaneously the switch oneself state is done monitoring in real time, assurance personnel and device security are to satisfy the demand of client to tight security and reliability.
To achieve these goals; The present invention adopts following technical scheme; A kind of special safety monitoring intelligent switch for industrial special door comprises base plate, is provided with contact modules in the upper end of base plate; The roller of base plate side is connected with an end of transmission mechanism through sensing arm, and the front end of the contact modules on the other end of transmission mechanism and the base plate contacts; Be characterized in that the base plate of the non-wheels side of sensing arm is provided with the wiping dish of being made up of upper strata copper ring and lower floor's copper ring, described upper strata copper ring and lower floor's copper ring are made up of copper sheet; In described sensing arm, be provided with lead, the long end of sensing arm wiping dish side contacts with the upper strata copper ring of wiping dish, and the short end of sensing arm wiping dish side contacts with lower floor's copper ring of wiping dish; Below base plate upper contact module, be provided with magnetic switch and jumper switch; The copper sheet of the upper strata copper ring of described wiping dish respectively with the corresponding connection of a side joint point of jumper switch; The opposite side contact of jumper switch is connected with an end of magnetic switch; The other end of magnetic switch is connected with the 0V power supply; The copper sheet of lower floor's copper ring of described wiping dish is connected with the input of contact modules, and the end that the output of described contact modules and magnetic switch are connected with the 0V power supply is connected with the safety monitoring circuit respectively.
Described magnetic switch comprises switch and the permanent magnet that is arranged on the switch bottom; Described switch comprises the magnetic shielding cover; In the magnetic shielding cover, be provided with left side fixed contact and right side fixed contact; Above left side fixed contact and right side fixed contact, be provided with armature, armature is arranged in the magnetic shielding cover through the back-moving spring of center; Described left side fixed contact is connected with the outer binding post of magnetic shielding cover through lead respectively with the right side fixed contact.
Described contact modules comprises housing, is respectively arranged with the top binding post in the both sides of housing internal upper part, and the both sides of bottom are respectively arranged with the bottom binding post in housing; Midway at two top binding posts is provided with the drive link that the lower end has the tip; The upper end of described drive link is fixedly connected with the top of housing; Both sides at the tip of drive link are respectively arranged with lobed left side armature plate and right side armature plate, and the convexity of the convexity of left side armature plate and right side armature plate is most advanced and sophisticated corresponding with drive link respectively; The lower end of left side armature plate and right side armature plate is fixedly connected with two bottom binding posts respectively; The upper end of left side armature plate and right side armature plate is connected with two top binding posts with the contact, right side through the contact, left side respectively, and the left side armature plate is connected with the right side inwall with the inner left wall of housing through spring respectively with the right side armature plate.
In order to make the adjustable length of sensing arm; Described sensing arm comprises left side sensing arm and right side sensing arm; Be connected through connecting plate between left side sensing arm and the right side sensing arm, described connecting plate is processed by electric conducting material, and connecting plate is fixed on the sensing arm through dog screw.
Described safety monitoring circuit comprises first relay, second relay, the 3rd relay, the 4th relay, the 5th relay, the 6th relay and host computer, and the positive pole of power supply is connected with an end of second normally-closed contact of the end of second normally opened contact of an end of the normally-closed contact of an end of first normally opened contact of an end of the coil of an end of the coil of an end of the coil of first relay, second relay, the 3rd relay, first relay, first relay, first relay and second relay respectively through fast acting fuse; The other end of the coil of first relay is connected with an output of contact modules, and the other end of the coil of second relay is connected with another output of contact modules, and the other end of the coil of the 3rd relay is connected with the negative pole of power supply; The other end of first normally opened contact of first relay is connected with an end of first normally-closed contact of the end of the coil of an end of the normally opened contact of the 5th relay, the 5th relay and second relay respectively through the normally opened contact of second relay, and the other end of first normally-closed contact of second relay is connected with the other end of the normally-closed contact of first relay; The other end of the normally opened contact of the 5th relay is connected with the negative pole of power supply through the coil of the 4th relay; The other end of the coil of the 5th relay is connected with the negative pole of power supply; The other end of second normally opened contact of first relay is connected with the negative pole of power supply through the coil of the 6th relay, and the other end of second normally-closed contact of second relay is connected with an end of the coil of the 6th relay that is connected with second normally opened contact of first relay; Be connected with host computer after the 3rd normally-closed contact parallel connection of the 3rd normally opened contact of first relay and second relay, be connected with host computer after the normally-closed contact parallel connection of the normally opened contact of the 4th relay and the 3rd relay.
In order better to play alarm function, be parallel with first light-emitting diode, second light-emitting diode, the 3rd light-emitting diode, the 4th light-emitting diode and the 5th light-emitting diode respectively at the two ends of the coil of described first relay, second relay, the 3rd relay, the 4th relay and the 6th relay.
Beneficial effect of the present invention:
Intelligent switch of the present invention is realized the position monitor of switch by mechanical property, guarantees that in use the intelligent switch very first time is given host computer with this signal feedback when intelligent switch occurring by scratching or when leaving former installation site; When mechanical property can also be implemented in hardware such as the sensing arm of intelligent switch, inner transmission mechanism and breaks down, intelligent switch was given host computer in the very first time with this signal feedback.
Because intelligent switch of the present invention adopts safe solid-state relay and simple logical circuit to control, and compares with PLC control, its cost is much lower; Because operating voltage is under safe voltage, and device self antijamming capability is strong, and all circuit integration circuit boards, security reliability is very high; Again because the monitoring function constantly of integration module self, and existing sensors can't self check, and therefore, the fail safe of intelligent switch of the present invention is particularly outstanding.
Intelligent switch of the present invention extremely under the harsh conditions, still can feed back triggering signal in environment for use safely and effectively; And can monitor each switch self electric fault, mechanical breakdown and transmission line failure etc. in real time; And can isolate improper triggering signal, thereby guarantee the safe in utilization of industrial special door.
In sum; Used intelligent switch of the present invention; The fail safe of system, reliability, accuracy all are greatly improved; Guaranteed the comparatively safe of system, equipment, personnel, desired security of system, reliability such as this and industrial special door use occasion Aircraft Hangar, heavy industry manufacturing, military project manufacturing fit like a glove.
Description of drawings:
Fig. 1 is the structural representation of intelligent switch of the present invention;
Fig. 2 is the A portion enlarged diagram of Fig. 1;
Fig. 3 is the circuit theory diagrams of the safety monitoring circuit of intelligent switch of the present invention;
Fig. 4 is the construction of switch sketch map of magnetic switch of the present invention;
Fig. 5 is the permanent magnet structural representation of magnetic switch of the present invention;
Fig. 6 is the structural representation of contact modules of the present invention;
Among the figure, 1-jumper switch, 2-magnetic switch, 3-contact modules, 4-base plate, 5-transmission mechanism, 6-roller; The 7-sensing arm, 8-dog screw, 9-connecting plate, 10-upper strata copper ring, 11-lower floor copper ring, 12-copper sheet; 13-wiping dish, 14-left side sensing arm, 15-right side sensing arm, 16-safety monitoring circuit, 17-host computer, 18-switch; 19-right side fixed contact, 20-back-moving spring, 21-magnetic shielding cover, 22-left side fixed contact, 23-binding post, 24-armature; The 25-permanent magnet, 26-bottom binding post, 27-is most advanced and sophisticated, and 28-is protruding, 29-housing, 30-right side armature plate; Contact, 31-right side, 32-drive link, 33-top binding post, contact, 34-left side, 35-spring, 36-left side armature plate.
Embodiment:
As shown in Figure 1; A kind of special safety monitoring intelligent switch for industrial special door; Comprise base plate 4; Be provided with contact modules 3 in the upper end of base plate 4, the roller 6 of base plate 4 sides is connected with an end of transmission mechanism 5 through sensing arm 7, and the front end of the contact modules 3 on the other end of transmission mechanism 5 and the base plate 4 contacts; The base plate 4 of sensing arm 7 non-roller 6 sides is provided with the wiping dish of being made up of upper strata copper ring 10 and lower floor's copper ring 11 13, and described upper strata copper ring 10 is made up of copper sheet 12 with lower floor's copper ring 11; In described sensing arm 7, be provided with lead, the long end of sensing arm 7 wiping dishes 13 sides contacts with the upper strata copper ring 10 of wiping dish 13, and the lead in the long end of assurance sensing arm 7 wiping dishes 13 sides contacts with upper strata copper ring 10; The short end of sensing arm 7 wiping dishes 13 sides contacts with lower floor's copper ring 11 of wiping dish 13, guarantees that the interior lead of the short end of sensing arm 7 wiping dishes 13 sides contacts with lower floor copper ring 11; Below base plate 4 upper contact modules 3, be provided with magnetic switch 2 and jumper switch 1; The copper sheet 12 of the upper strata copper ring 10 of described wiping dish 13 passes through the corresponding connection of lead with a side joint point of jumper switch 1 respectively; The opposite side contact of jumper switch 1 is connected with an end of magnetic switch 2; The other end of magnetic switch 2 is connected with the 0V power supply; The copper sheet 12 of lower floor's copper ring 11 of described wiping dish 13 is connected through lead with the input of contact modules 3, and the end that the output of described contact modules 3 and magnetic switch 2 are connected with the 0V power supply is connected with safety monitoring circuit 16 respectively.
Like Fig. 4, shown in Figure 5; Described magnetic switch 2 comprises switch 18 and the permanent magnet 25 that is arranged on switch 18 bottoms; Described switch 18 comprises magnetic shielding cover 21; In magnetic shielding cover 21, be provided with left side fixed contact 22 and right side fixed contact 19, above left side fixed contact 22 and right side fixed contact 19, be provided with armature 24, armature 24 is arranged in the magnetic shielding cover 21 through the back-moving spring 20 of center; Described left side fixed contact 22 is connected with magnetic shielding cover 21 outer binding posts 23 through lead respectively with right side fixed contact 19.Described magnetostatic shield cover 21 is used to shield the magnetic interference of other directions.
As shown in Figure 6, described contact modules 3 comprises housing 29, is respectively arranged with top binding post 33 in the both sides of housing 29 internal upper parts, and the both sides of bottom are respectively arranged with bottom binding post 26 in housing 29; Midway at two top binding posts 33 is provided with the drive link 32 that the lower end has tip 27; The upper end of described drive link 32 is fixedly connected with the top of housing 29; Be respectively arranged with in the both sides at the tip 27 of drive link 32 and have protruding 28 left side armature plate 36 and right side armature plate 30, the convexity 28 of left side armature plate 36 is corresponding with the tip 27 of drive link 32 respectively with the convexity 28 of right side armature plate 30; The lower end of left side armature plate 36 and right side armature plate 30 is fixedly connected with two bottom binding posts 26 respectively; The upper end of left side armature plate 36 and right side armature plate 30 is connected with two top binding posts 33 with contact, right side 31 through contact, left side 34 respectively, and left side armature plate 36 is connected with the right side inwall with the inner left wall of housing 29 through spring 35 respectively with right side armature plate 30.
As shown in Figure 2; In order to make the adjustable length of sensing arm 7; Described sensing arm 7 comprises left side sensing arm 14 and right side sensing arm 15; Be connected through connecting plate 9 between left side sensing arm 14 and the right side sensing arm 15, described connecting plate 9 is processed by electric conducting material, and connecting plate 9 is fixed on the sensing arm 7 through dog screw 8.
As shown in Figure 3; Described safety monitoring circuit 16 comprises the first relay SR1, the second relay SR2, the 3rd relay SR3, the 4th relay SO1, the 5th relay ST, the 6th relay SO3 and host computer 17, and the positive pole of power supply is connected with an end of second normally-closed contact of the end of second normally opened contact of an end of the normally-closed contact of an end of first normally opened contact of an end of the coil of an end of the coil of an end of the coil of the first relay SR1, the second relay SR2, the 3rd relay SR3, the first relay SR1, the first relay SR1, the first relay SR1 and the second relay SR2 respectively through fast acting fuse FU; The other end of the coil of the first relay SR1 is connected with an output M1 of contact modules 3; The other end of the coil of the second relay SR2 is connected with another output M2 of contact modules 3, and the other end of the coil of the 3rd relay SR3 is connected with the negative pole of power supply; The other end of first normally opened contact of the first relay SR1 is connected with an end of first normally-closed contact of the end of the coil of an end of the normally opened contact of the 5th relay ST, the 5th relay ST and the second relay SR2 respectively through the normally opened contact of the second relay SR2, and the other end of first normally-closed contact of the second relay SR2 is connected with the other end of the normally-closed contact of the first relay SR1; The other end of the normally opened contact of the 5th relay ST is connected with the negative pole of power supply through the coil of the 4th relay SO1; The other end of the coil of the 5th relay ST is connected with the negative pole of power supply; The other end of second normally opened contact of the first relay SR1 is connected with the negative pole of power supply through the coil of the 6th relay SO3, and the other end of second normally-closed contact of the second relay SR2 is connected with an end of the coil of the 6th relay SO3 that is connected with second normally opened contact of the first relay SR1; Be connected with host computer 17 after the 3rd normally-closed contact parallel connection of the 3rd normally opened contact of the first relay SR1 and the second relay SR2, be connected with host computer 17 after the normally-closed contact parallel connection of the normally opened contact of the 4th relay SO1 and the 3rd relay SR3.
In order better to play alarm function, be parallel with first light-emitting diode, second light-emitting diode, the 3rd light-emitting diode, the 4th light-emitting diode and the 5th light-emitting diode respectively at the two ends of the coil of the described first relay SR1, the second relay SR2, the 3rd relay SR3, the 4th relay SO1 and the 6th relay SO3.
The described first relay SR1, the second relay SR2 and the 3rd relay SR3 adopt safe solid-state relay respectively; Described the 5th relay ST adopts the time relay.
Below in conjunction with accompanying drawing the present invention is further described:
As shown in Figure 3; Safety monitoring circuit of the present invention has two paths of signals input M1, M2; After input signal got into the first relay SR1, the second relay SR2, follow-up go-on-go logical circuit began processing signals, and the safety signal and the alarm signal that will obtain after will handling at last flow to host computer 17.
For example, the flexible hoisting door of one of industrial special door type is in its control system; The upper limit of lever gear door adopts mechanical trip switch S Q1; The spacing same employing mechanical trip switch S Q2 of limes superiors, SQ1 feeds back to the drive motors stop signal, and SQ2 is the guard signal under SQ1 lost efficacy.Even like this, if do not have the safety monitoring circuit to Signal Processing, when SQ1, SQ2 lost efficacy simultaneously, control system can't be judged this type of fault, and will directly cause drive motors out of control, cause a body to cross the grave danger of position.
And adopted the control system of intelligent switch of the present invention, and the state of SQ1, SQ2 is monitored constantly, in case SQ1 breaks down, the safety monitoring circuit can send safety signal and alarm signal the very first time; Safety signal guarantees that drive motors safety stops, and the alarm signal caution is also forbidden the control system operation.Equally, the SQ2 state is also monitored by the safety monitoring circuit constantly, in case break down, its safety signal will directly cut off a body power supply general supply, and its fault-signal is with the operation and the acousto-optic warning of locked control system.Such control system; Even SQ1 lost efficacy or hardware control system fault (such as the contactor adhesion), when triggering SQ2, will unconditionally cut off the general supply circuit breaker; The state of SQ2 also is monitored constantly simultaneously, and its any one electric fault all will be detected.
Claims (6)
1. special safety monitoring intelligent switch for industrial special door; Comprise base plate; Upper end at base plate is provided with contact modules, and the roller of base plate side is connected with an end of transmission mechanism through sensing arm, and the front end of the contact modules on the other end of transmission mechanism and the base plate contacts; It is characterized in that the base plate of the non-wheels side of sensing arm is provided with the wiping dish of being made up of upper strata copper ring and lower floor's copper ring, described upper strata copper ring and lower floor's copper ring are made up of copper sheet; In described sensing arm, be provided with lead, the long end of sensing arm wiping dish side contacts with the upper strata copper ring of wiping dish, and the short end of sensing arm wiping dish side contacts with lower floor's copper ring of wiping dish; Below base plate upper contact module, be provided with magnetic switch and jumper switch; The copper sheet of the upper strata copper ring of described wiping dish respectively with the corresponding connection of a side joint point of jumper switch; The opposite side contact of jumper switch is connected with an end of magnetic switch; The other end of magnetic switch is connected with the 0V power supply; The copper sheet of lower floor's copper ring of described wiping dish is connected with the input of contact modules, and the end that the output of described contact modules and magnetic switch are connected with the 0V power supply is connected with the safety monitoring circuit respectively.
2. a kind of special safety monitoring intelligent switch for industrial special door according to claim 1; It is characterized in that described magnetic switch comprises switch block and the permanent magnet that is arranged on the switch block bottom; Described switch block comprises the magnetic shielding cover; In the magnetic shielding cover, be provided with left side fixed contact and right side fixed contact, above left side fixed contact and right side fixed contact, be provided with armature, armature is arranged in the magnetic shielding cover through the back-moving spring of center; Described left side fixed contact is connected with the outer binding post of magnetic shielding cover through lead respectively with the right side fixed contact.
3. a kind of special safety monitoring intelligent switch for industrial special door according to claim 1; It is characterized in that described contact modules comprises housing; Be respectively arranged with the top binding post in the both sides of housing internal upper part, the both sides of bottom are respectively arranged with the bottom binding post in housing; Midway at two top binding posts is provided with the drive link that the lower end has the tip; The upper end of described drive link is fixedly connected with the top of housing; Both sides at the tip of drive link are respectively arranged with lobed left side armature plate and right side armature plate, and the convexity of the convexity of left side armature plate and right side armature plate is most advanced and sophisticated corresponding with drive link respectively; The lower end of left side armature plate and right side armature plate is fixedly connected with two bottom binding posts respectively; The upper end of left side armature plate and right side armature plate is connected with two top binding posts with the contact, right side through the contact, left side respectively, and the left side armature plate is connected with the right side inwall with the inner left wall of housing through spring respectively with the right side armature plate.
4. a kind of special safety monitoring intelligent switch for industrial special door according to claim 1; It is characterized in that described sensing arm comprises left side sensing arm and right side sensing arm; Be connected through connecting plate between left side sensing arm and the right side sensing arm; Described connecting plate is processed by electric conducting material, and connecting plate is fixed on the sensing arm through dog screw.
5. a kind of special safety monitoring intelligent switch for industrial special door according to claim 1; It is characterized in that described safety monitoring circuit comprises first relay, second relay, the 3rd relay, the 4th relay, the 5th relay, the 6th relay and host computer, the positive pole of power supply is connected with an end of second normally-closed contact of the end of second normally opened contact of an end of the normally-closed contact of an end of first normally opened contact of an end of the coil of an end of the coil of an end of the coil of first relay, second relay, the 3rd relay, first relay, first relay, first relay and second relay respectively through fast acting fuse; The other end of the coil of first relay is connected with an output of contact modules, and the other end of the coil of second relay is connected with another output of contact modules, and the other end of the coil of the 3rd relay is connected with the negative pole of power supply; The other end of first normally opened contact of first relay is connected with an end of first normally-closed contact of the end of the coil of an end of the normally opened contact of the 5th relay, the 5th relay and second relay respectively through the normally opened contact of second relay, and the other end of first normally-closed contact of second relay is connected with the other end of the normally-closed contact of first relay; The other end of the normally opened contact of the 5th relay is connected with the negative pole of power supply through the coil of the 4th relay; The other end of the coil of the 5th relay is connected with the negative pole of power supply; The other end of second normally opened contact of first relay is connected with the negative pole of power supply through the coil of the 6th relay, and the other end of second normally-closed contact of second relay is connected with an end of the coil of the 6th relay that is connected with second normally opened contact of first relay; Be connected with host computer after the 3rd normally-closed contact parallel connection of the 3rd normally opened contact of first relay and second relay, be connected with host computer after the normally-closed contact parallel connection of the normally opened contact of the 4th relay and the 3rd relay.
6. a kind of special safety monitoring intelligent switch for industrial special door according to claim 5 is characterized in that being parallel with first light-emitting diode, second light-emitting diode, the 3rd light-emitting diode, the 4th light-emitting diode and the 5th light-emitting diode respectively at the two ends of the coil of described first relay, second relay, the 3rd relay, the 4th relay and the 6th relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101550496A CN101834071B (en) | 2010-04-26 | 2010-04-26 | Special safety monitoring intelligent switch for industrial special door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101550496A CN101834071B (en) | 2010-04-26 | 2010-04-26 | Special safety monitoring intelligent switch for industrial special door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101834071A CN101834071A (en) | 2010-09-15 |
| CN101834071B true CN101834071B (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101550496A Expired - Fee Related CN101834071B (en) | 2010-04-26 | 2010-04-26 | Special safety monitoring intelligent switch for industrial special door |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104368403B (en) * | 2013-08-14 | 2018-10-30 | 海尔集团公司 | A kind of Biohazard Safety Equipment ultraviolet lamp linkage controller and its control method |
| CN109637249B (en) * | 2019-01-14 | 2021-10-01 | 上海中侨职业技术学院 | Air flow meter sensor fault simulation detection joint and use method thereof |
| CN113374373B (en) * | 2021-06-07 | 2022-04-12 | 福建省福能龙安热电有限公司 | Electric inserting plate door of circulating fluidized bed boiler |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10147609B4 (en) * | 2001-09-27 | 2016-07-28 | Volkswagen Ag | Door fixing, in particular sliding, for a vehicle with a door contact switch |
| JP2006045862A (en) * | 2004-08-03 | 2006-02-16 | Nippon Aleph Corp | Shutter operation automatic monitoring device |
| US8205387B2 (en) * | 2007-04-12 | 2012-06-26 | Stanley Black & Decker, Inc. | Delayed egress sliding door and method |
| CN201690215U (en) * | 2010-04-26 | 2010-12-29 | 沈阳宝通门业有限公司 | Dedicated intelligent safety-monitoring switch for industrial special door |
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Denomination of invention: Special safety monitoring intelligent switch for industrial special door Effective date of registration: 20171019 Granted publication date: 20120104 Pledgee: Pudong Development Bank of Shanghai Limited by Share Ltd. Shenyang branch Pledgor: SHENYANG BAOTONG DOOR Co.,Ltd. Registration number: 2017210000020 |
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Date of cancellation: 20191118 Granted publication date: 20120104 Pledgee: Pudong Development Bank of Shanghai Limited by Share Ltd. Shenyang branch Pledgor: SHENYANG BAOTONG DOOR Co.,Ltd. Registration number: 2017210000020 |
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