CN111827168A - Door leaf device of subway gate - Google Patents
Door leaf device of subway gate Download PDFInfo
- Publication number
- CN111827168A CN111827168A CN201910936039.7A CN201910936039A CN111827168A CN 111827168 A CN111827168 A CN 111827168A CN 201910936039 A CN201910936039 A CN 201910936039A CN 111827168 A CN111827168 A CN 111827168A
- Authority
- CN
- China
- Prior art keywords
- gate
- drive shaft
- shutter
- door leaf
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 6
- 239000005341 toughened glass Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
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- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
- E01F13/06—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage by swinging into open position about a vertical or horizontal axis parallel to the road direction, i.e. swinging gates
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B11/00—Means for allowing passage through fences, barriers or the like, e.g. stiles
- E06B11/02—Gates; Doors
- E06B11/022—Gates; Doors characterised by the manner of movement
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/40—Application of doors, windows, wings or fittings thereof for gates
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
Abstract
The invention relates to a door leaf device arranged on a subway gate, which is characterized by comprising: a gate body (10) having a charge settlement function; a baffle plate (30) which is rotatably supported by forming a drive shaft (31) on one side of the gate main body (10); a locking unit (40) for applying an electromotive force of a coil (45) to the shutter (30) to maintain a closed or forward/reverse direction open position; and a control unit (50) for controlling the gate body (10), the shutter (30) and the locking unit (40) according to a set algorithm. Therefore, under the condition that the number of passengers to be processed by the subway gate increases sharply, even if power failure or misoperation occurs, the danger of collision with the door is reduced, and convenience and safety are improved.
Description
Technical Field
The present invention relates to a door of a subway gate, and more particularly, to a door device of a subway gate which restricts entrance and exit in association with settlement of a subway ticket to a subway attendant.
Background
In general, subways are the most popular means of transportation in major metropolitan areas of countries throughout the world. Subways in major countries still maintain a high transport share due to extensive service automation in various departments. In the subway, the gates passed by all the passengers are the beginning and the end of the service automation. The door provided to the gate is required to maintain convenience and safety even if there is a serious fluctuation of the processing target passenger.
In this connection, the following korean patent laid-open publication No. 1311975 (prior document 1), korean patent laid-open publication No. 1520854 (prior document 2), and the like can be cited as prior art documents.
Prior document 1 includes: a frame disposed at a predetermined interval in the gate; an outer door rotatably provided to the frame; an inner door rotatably disposed inside the outer door; and a fast moving unit for opening and closing the inner door in conjunction with the opening and closing movement of the outer door. In this regard, the passenger handling capacity is increased and the reliability and proficiency of work are maintained in response to the impact.
Prior document 2 includes: a support structure for supporting the door; a drive motor provided inside the support structure; a driving arm which reciprocates by a driving motor and is connected to the door to slide; a shaft connected to a center of the reciprocating motion of the driving arm; and an elastic force adjusting member connected with the shaft for adjusting the opening and closing force of the door. In contrast, the rotation of the door becomes smooth and the durability is increased.
However, according to the above-described conventional document, since the door is opened and closed in a direction orthogonal to the boarding/alighting path, it is difficult to eliminate inconvenience and possibility of injury due to an unpredictable cause of collision with the door.
Documents of the prior art
Patent document
Patent document 1: korean granted patent publication No. 1311975 "door structure of subway gate" (published: 2013, 08 months and 02 days);
patent document 2: korean granted patent publication No. 1520854, "sliding type door system" (published: 2015, 05, 15).
Disclosure of Invention
Technical problem to be solved
An object of the present invention, which has been made to solve the above-mentioned conventional problems, is to provide a door opening device of a subway station gate, which reduces the risk of collision with a door even if power failure or malfunction occurs in a situation where passengers are suddenly increased in a process of limiting entrance and exit by settling a subway ticket associated with the passengers.
Another object of the present invention is to increase the number of gates by maintaining a narrow width of the door.
Technical scheme for solving problems
In order to achieve the above object, the present invention provides a door leaf device provided to a subway gate, comprising: the gate body has the function of expense settlement; a barrier plate rotatably supported by a drive shaft formed on one side of the gate main body; a locking unit for applying an electromotive force of the spiral pipe to the baffle plate to maintain a closed or forward/backward open position; and a control unit for controlling the gate body, the baffle plate and the locking unit according to a set algorithm.
According to a detailed configuration of the present invention, the baffle is formed in a T-shape with a narrowed intermediate width by using flame-retardant urethane or tempered glass.
According to a detailed configuration of the present invention, the damper receives an elastic force in an opening direction by a return spring connected to the drive shaft, and a torque limiter is further formed between the drive shaft and the drive motor.
According to a detailed configuration of the present invention, the present invention is characterized in that the locking unit includes: a gear concentrically disposed on the drive shaft; and a stopper connected to the spiral pipe to be engaged with the gear.
According to a detailed configuration of the present invention, the control unit includes: a gate control unit which performs opening and closing of the shutter in conjunction with settlement; a position detector provided on the drive shaft for detecting an open/close position of the shutter; and an impact detector mounted on the gate control unit for detecting an impact generated on the shutter.
Advantageous effects of the invention
As described above, according to the present invention, in the case where the number of passengers to be handled in the subway station gate increases drastically, convenience and safety are improved by reducing the risk of collision with the door even if power failure or malfunction occurs.
Drawings
Fig. 1 is a perspective view of the device of the present invention viewed from the outside to the inside.
Fig. 2 is a front view of the device of the present invention as viewed from the inside to the outside.
Fig. 3 is a structural view showing the forward direction of the shutter in fig. 1 being opened.
Fig. 4 is a structural view showing a state in which the shutter in fig. 1 is closed.
Fig. 5 is a structural view showing a reverse direction opening of the baffle in fig. 1.
Description of reference numerals
10: gate body, 20: outer cover, 25: bracket, 30: baffle, 31: drive shaft, 32: drive motor, 34: return spring, 36: torque limiter, 40: locking unit, 41: gear, 43: stopper, 45: spiral duct, 50: control unit, 52: gate control unit, 54: position detector, 56: an impact detector.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention provides a door leaf device arranged on a subway gate. The present invention is directed to a gate that swings in a gate having a plurality of movement paths, but is not limited thereto. Consider the case of maintaining a narrow gate width of the vias, but the invention is not so limited.
According to the invention, the invention is based on a gate body 10 with a charge settlement function. The gate body 10 has at least a part of a function of settling the fee. The gate body 10 may selectively include a subway ticket counter, a card counter, a cash dispenser, etc. for settlement of fees. If the passenger passes by holding a credit card or a transportation card, an "open gate" method capable of settling the fee may be applied.
On the other hand, in the subway station, the direction of the platform is referred to as "inside (inside)" and the direction of the exit is referred to as "outside (outside)" with the gate main body 10 as a reference.
Also, according to the present invention, the barrier 30 is rotatably supported by forming a driving shaft 31 at one side of the gate main body 10. The baffle 30 may be provided in a left-side type, a right-side type, or both-side type in the gate body 10. Fig. 1 and 4 are views from the outside to the inside of the subway station, and fig. 2 and 3 are views from the inside to the outside of the subway station. In any case, the baffle 30 of the left-hand type is presented in the present invention, but the present invention is not limited thereto.
Referring to fig. 1 and 2, the housing 20 and the bracket 25 are fixed to one side of the gate body 10. The upper and lower ends of the drive shaft 31 are rotatably supported by the bracket 25 and the housing 20, respectively. The barrier 30 may be tightly fixed to the driving shaft 31 and may be separated to adjust the relative position. The variation of the left-side type and the right-side type becomes simple with the relative position of the adjusting flapper 30 and the drive shaft 31.
According to a detailed structure of the present invention, the baffle 30 is formed in a T-shape with a narrowed width in the middle using flame retardant urethane or tempered glass.
The minimum width of the baffle 30 of the present invention can be about 240mm and the minimum height about 800mm, which is a design element that maximizes the number of gate bodies 10 in a limited case. The material of the baffle 30 is flame-retardant urethane, another resin material having physical properties equivalent to or higher than those of flame-retardant urethane, or tempered glass. The flame-retardant polyurethane and the toughened glass can also be partially used together. The baffle 30 has a substantially T-shaped or C-shaped outer shape with a large upper side and a small lower side and a narrow middle width. In addition to forming the edge portion of the baffle 30 into an arc shape, a partially additional buffer plate is required. As described above, the lightweight structure can improve the operational reliability and is advantageous for ensuring the field of view, and safety against collision can be ensured even if the number of passengers passing through increases dramatically.
According to a detailed configuration of the present invention, the damper 30 receives an elastic force in an opening direction by a return spring 34 connected to the drive shaft 31, and a torque limiter 36 is further formed between the drive shaft 31 and the drive motor 32.
Referring to fig. 3, a state in which a return spring 34 and a torque limiter 36 are provided above the drive motor 32 inside the housing 20 is illustrated. The drive motor 32 is preferably a servo type having a brake function. In the closed state of fig. 2, the spring force of the return spring 34 will increase, and in the open state of fig. 3, the spring force will decrease. During the time that the drive motor 32 is closing the flapper 30, the spring energy of the return spring 34 will build up. This is to maintain the barrier 30 in an open state to allow passengers to quickly escape from the inside to the outside of the subway station when an emergency such as a platform fire or a power failure occurs. In this case, if the closed state of the flap 30 is maintained, the passenger can forcibly push the flap 30 to open. This is simply because the torque limiter 36 is mounted on the drive shaft 31. The torque limiter 36 slips above a set torque to allow rotation of the flapper 30.
Also, according to the present invention, the locking unit 40 applies an electromotive force of the solenoid 45 to the barrier 30 to maintain the closed or forward and backward opened position. As shown in fig. 1 and 2, the locking unit 40 maintains the closed state of the shutter 30, or as shown in fig. 3, maintains the forward open state of the shutter 30, or as shown in fig. 5, maintains the forward and reverse open state of the shutter 30. For example, if the settlement of the fee by the passenger is problematic, the driving motor 32 is stopped to maintain the braking state, and the solenoid 45 is activated to restrict the opening of the damper 30.
According to a detailed structure of the present invention, the locking unit 40 includes: a gear 41 concentrically provided on the drive shaft 31; and a stopper 43 connected to the solenoid 45 to be engaged with the gear 41.
Referring to fig. 1 to 3, in the driving shaft 31, a gear 41 having a tooth shape at a lower side of the torque limiter 36 is concentrically coupled, and a solenoid 45 disposed adjacent to a side of the gear 41 is connected to a stopper 43 so as to face the gear 41. As shown in fig. 4, when the shutter 30 is rotated to the closed position due to an abnormal settlement or the like, the solenoid 45 is actuated to engage the stopper 43 with the gear 41. The position of the damper 30 can be maintained by the operation of the solenoid 45 in a state where the damper is opened in the forward or reverse direction.
Of course, since the torque limiter 36 is provided, the damper 30 is allowed to be forcibly opened in an emergency such as a fire during the activation of the locking unit 40. That is, in the engaged state of the gear 41 and the stopper 43, the drive shaft 31 positioned above the torque limiter 36 rotates.
Further, according to the present invention, the control unit 50 controls the gate main body 10, the barrier 30, and the locking unit 40 according to a set algorithm. The Control Unit 50 is based on a Gate Control Unit (GCU) mounted on the Gate main body 10. The control unit 50 improves the reliability of the operation of the door, which is embodied by a simple algorithm.
According to a detailed structure of the present invention, the control unit 50 includes: a gate control unit 52 for opening and closing the shutter 30 in conjunction with settlement; a position detector 54 provided on the drive shaft 31 for detecting the open/close position of the shutter 30; and an impact detector 56 mounted on the gate control unit 52 for detecting an impact generated on the flapper 30.
The gate control unit 52 is a microprocessor, and is composed of a memory and a microcomputer circuit having an input/output interface. Of course, the functions may be shared by providing an additional control substrate (not shown) in addition to the gate control unit 52. In order to improve the control reliability of the brushless dc motor type drive motor 32, RS232 communication is used and the operation speed can be adjusted in the range of 0.3 to 1 second. The position detector 54 is connected to the upper end of the drive shaft 31 by a potentiometer in a state of being fixed to the bracket 25. A coupler is formed between the drive shaft 31 and the position detector 54 to easily perform angle setting. The impact detector 56 detects a current change in a driving unit of the drive motor 32 connected to an output interface of the gate control unit 52. Further, an impact detector 56 may be additionally provided between the baffle 30 and the drive motor 32. In any case, when a passenger collides with the baffle 30, a set signal is generated.
As an example of the operation, the shutter 30 of the gate main body 10 is in a closed state, and the shutter 30 is opened by the actuation of the driving motor 32 in the case of normal settlement of the fee, and the closed state is maintained by the actuation of the solenoid 45 in the case of abnormal settlement. The gate control unit 52 controls the signal of the substrate input position detector 54 and activates the driving motor 32 to guide the normal position opening and closing of the barrier 30.
Of course, the flapper 30 is maintained in the open state during the commute time period in which the passengers are drastically increased, and the driving motor 32 and the solenoid 45 may be sequentially activated only when abnormal settlement occurs. When an impact equal to or greater than a set value is detected in the closed state of the shutter 30, the shutter 30 is opened for safety. When an accident such as a power failure occurs, the shutter 30 is opened by the elastic force of the return spring 34, and the shutter 30 is forcibly opened by the lower surface torque limiter 36 even in a state where the shutter 30 is closed.
The present invention is not limited to the embodiments described, and various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, such modifications or variations fall within the scope of the claimed invention.
Claims (5)
1. The utility model provides a door leaf device of subway floodgate machine, sets up in subway floodgate machine which characterized in that includes:
a gate body (10) having a charge settlement function;
a baffle plate (30) which is rotatably supported by forming a drive shaft (31) on one side of the gate main body (10);
a locking unit (40) for applying an electromotive force of a coil (45) to the shutter (30) to maintain a closed or forward/reverse direction open position; and
and a control unit (50) for controlling the gate body (10), the shutter (30) and the locking unit (40) according to a set algorithm.
2. Door leaf device of a subway station according to claim 1,
the baffle (30) is formed in a T-shape with a narrow middle width by using flame-retardant polyurethane or toughened glass.
3. Door leaf device of a subway station according to claim 1,
the damper (30) is urged in the opening direction by a return spring (34) connected to the drive shaft (31), and a torque limiter (36) is formed between the drive shaft (31) and the drive motor (32).
4. Door leaf device of a subway station according to claim 1,
the locking unit (40) includes:
a gear (41) concentrically provided on the drive shaft (31); and
and a stopper (43) connected to the solenoid (45) and engaged with the gear (41).
5. Door leaf device of a subway station according to claim 1,
the control unit (50) includes:
a gate control unit (52) which is linked with the settlement to execute the opening and closing of the baffle (30);
a position detector (54) provided on the drive shaft (31) and used for detecting the opening and closing position of the baffle (30); and
and an impact detector (56) mounted on the gate control unit (52) and detecting an impact generated on the shutter (30).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020190044490A KR20200121660A (en) | 2019-04-16 | 2019-04-16 | Swing door apparatus for subway gate |
| KR10-2019-0044490 | 2019-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111827168A true CN111827168A (en) | 2020-10-27 |
Family
ID=72912579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910936039.7A Pending CN111827168A (en) | 2019-04-16 | 2019-09-29 | Door leaf device of subway gate |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20200121660A (en) |
| CN (1) | CN111827168A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962490A (en) * | 2021-02-25 | 2021-06-15 | 嘉兴学院 | Ticket checking gate device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210301446A1 (en) | 2020-03-31 | 2021-09-30 | Lg Electronics Inc. | Laundry treating apparatus and control method for the same |
| CN112950823B (en) * | 2021-02-04 | 2023-10-17 | 北京城建智控科技股份有限公司 | Energy-saving automatic induction device for subway ticket checking |
| KR102510997B1 (en) * | 2021-03-26 | 2023-03-17 | 주식회사 푸른기술 | Swing door system for subway train gate |
| CN114457723B (en) * | 2022-01-19 | 2023-07-21 | 山西雁游文旅科技有限公司 | Intelligent gate with high security |
| CN115063915B (en) * | 2022-04-19 | 2024-03-08 | 北京象牙塔网格安全信息技术有限公司 | Personnel safety card access control system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240281A (en) * | 2007-03-26 | 2008-10-09 | Kumahira Safe Co Inc | Security gate |
| KR200442468Y1 (en) * | 2007-07-11 | 2008-11-12 | 국제시스템산업 주식회사 | drop type opening and closing device for gate |
| CN201588178U (en) * | 2009-11-10 | 2010-09-22 | 深圳市志美智能科技有限公司 | Integral rotary swing gate |
| KR20110006875A (en) * | 2009-07-15 | 2011-01-21 | 주식회사씨큐어테크 | A drive device of a security revolving door |
| KR20140139850A (en) * | 2013-05-28 | 2014-12-08 | 주식회사 푸른기술 | Access gate operating equipment |
| CN108316188A (en) * | 2018-02-02 | 2018-07-24 | 成都红户里科技有限公司 | Unmanned supermarket's gate equipment with automatic identification equipment code performance |
| CN108364383A (en) * | 2018-02-02 | 2018-08-03 | 成都红户里科技有限公司 | A kind of electronic lock structure entering office building by scanning the two-dimensional code |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101311975B1 (en) | 2012-01-25 | 2013-09-30 | 주식회사 푸른기술 | Swing door device for subway gate |
| KR101520854B1 (en) | 2013-12-10 | 2015-05-15 | 주식회사 시스원 | Slide Swing Type Gate Door System |
-
2019
- 2019-04-16 KR KR1020190044490A patent/KR20200121660A/en not_active Application Discontinuation
- 2019-09-29 CN CN201910936039.7A patent/CN111827168A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008240281A (en) * | 2007-03-26 | 2008-10-09 | Kumahira Safe Co Inc | Security gate |
| KR200442468Y1 (en) * | 2007-07-11 | 2008-11-12 | 국제시스템산업 주식회사 | drop type opening and closing device for gate |
| KR20110006875A (en) * | 2009-07-15 | 2011-01-21 | 주식회사씨큐어테크 | A drive device of a security revolving door |
| CN201588178U (en) * | 2009-11-10 | 2010-09-22 | 深圳市志美智能科技有限公司 | Integral rotary swing gate |
| KR20140139850A (en) * | 2013-05-28 | 2014-12-08 | 주식회사 푸른기술 | Access gate operating equipment |
| CN108316188A (en) * | 2018-02-02 | 2018-07-24 | 成都红户里科技有限公司 | Unmanned supermarket's gate equipment with automatic identification equipment code performance |
| CN108364383A (en) * | 2018-02-02 | 2018-08-03 | 成都红户里科技有限公司 | A kind of electronic lock structure entering office building by scanning the two-dimensional code |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962490A (en) * | 2021-02-25 | 2021-06-15 | 嘉兴学院 | Ticket checking gate device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20200121660A (en) | 2020-10-26 |
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| PB01 | Publication | ||
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Application publication date: 20201027 |