CN111691784A - Electric door - Google Patents
Electric door Download PDFInfo
- Publication number
- CN111691784A CN111691784A CN202010669799.9A CN202010669799A CN111691784A CN 111691784 A CN111691784 A CN 111691784A CN 202010669799 A CN202010669799 A CN 202010669799A CN 111691784 A CN111691784 A CN 111691784A
- Authority
- CN
- China
- Prior art keywords
- door
- motor
- relay
- door leaf
- main board
- 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
- 230000006698 induction Effects 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
Images
Classifications
-
- 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
- E05F15/63—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by swinging arms
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
- E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
- E05C17/46—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means in which the wing or a member fixed thereon is engaged by a movable fastening member in a fixed position; in which a movable fastening member mounted on the wing engages a stationary member
-
- 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
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/73—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
-
- 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
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0048—Circuits, feeding, monitoring
- E05B2047/0067—Monitoring
- E05B2047/0069—Monitoring bolt position
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention provides an electric door, which comprises a door, an electric cabinet and a swing arm mechanism; the door comprises a door leaf and a door frame; the door leaf is movably arranged on the door frame; the electric cabinet comprises a control mainboard, a relay, a motor and a power supply; the control main board and the motor are both connected with the relay; the power supply is respectively connected with the control mainboard, the relay and the motor; the relay driving power supply is controlled by the control mainboard to supply power or not supply power to the motor, so that the rotation or stop of the motor can be realized; one end of the swing arm mechanism is connected with the door leaf, and the other end of the swing arm mechanism is connected with the output end of the motor. The invention has simple structure, good reliability and stability; the induction piece is matched with the control main board, whether people exist in the induction area can be detected, and therefore the door leaf can be opened automatically, the door leaf opening and closing device has the function of recording the opening and closing times of the door leaf, and data reference is provided for maintainers.
Description
Technical Field
The invention relates to the technical field of electric doors, in particular to an electric door.
Background
At present, the electric door related enterprises at the railway reconnection position are few, and the defects exist in the prior art: 1. the door leaf has heavy weight, and the mechanical door closer has high strength, so that the door is inconvenient for drivers and passengers to open; 2. poor stability and reliability; 3. and the switch times are not recorded, so that the maintenance is difficult.
Therefore, there is an urgent need for a power door with good stability and reliability, automatic opening and closing, and monitoring of the number of opening and closing times to solve the above problems.
Disclosure of Invention
The invention aims to provide an electric door, which solves the technical problems of inconvenient door leaf opening, poor stability and reliability and difficult maintenance of the electric door at the railway reconnection position at present, and adopts the following technical scheme:
an electric door comprises a door, an electric cabinet and a swing arm mechanism;
the door comprises a door leaf and a door frame; the door leaf is movably arranged on the door frame;
the electric cabinet comprises a control mainboard, a relay, a motor and a power supply; the control main board and the motor are both connected with the relay; the relay is controlled by the control main board to drive the motor, so that the rotation or stop of the motor can be realized; the power supply is respectively connected with the control main board, the relay and the motor;
one end of the swing arm mechanism is connected with the door leaf, and the other end of the swing arm mechanism is connected with the output end of the motor.
The following are preferred for this solution:
the door also comprises a door lock and a handle; the door lock is arranged on the door leaf and connected with the relay; the handle is arranged on the door leaf and used for opening and closing the door leaf.
The door lock comprises a door lock body, an electromagnet and a position sensor; the electromagnet connecting relay corresponds to the door lock body and is used for controlling the opening or closing state of the door lock body by the relay; and the position sensor is respectively connected with the door lock body and the control main board and is used for feeding back the working state of the door lock body to the control main board.
The electric cabinet also comprises a box body, an induction piece and an anti-collision piece; the induction part, the anti-collision part, the control main board, the relay and the motor are all arranged on the box body.
The induction piece comprises a first induction piece and a second induction piece; the first sensing piece is connected with the control main board and arranged corresponding to the door leaf, and is used for monitoring whether a person exists in the sensing area; the second sensing piece comprises two groups of position switches; the position switch is connected with the control main board and records the opening and closing times of the door leaf by contacting or not contacting with the swing arm mechanism.
The anti-collision piece is arranged on the outer wall of the box body and is in contact with the swing arm mechanism to limit the opening angle of the door leaf.
The power supply comprises a first power supply and a second power supply; the first power supply and the second power supply are both arranged in the box body; the first power supply is connected with the sensing piece and the position sensor and is used for supplying power to the sensing piece and the position sensor; the second power supply is respectively connected with the relay and the motor, so that the relay can control the second power supply to transmit or not transmit power to the motor.
The swing arm mechanism comprises a first connecting rod and a second connecting rod; the first ends of the first connecting rod and the second connecting rod are movably connected, and the second ends of the first connecting rod and the second connecting rod are respectively connected with the door leaf and the output end of the motor.
And a groove is formed at the joint of the swing arm mechanism and the motor and is used for connecting the output end of the motor.
The technical scheme of the invention has the following beneficial effects:
1. the electric door comprises a door, an electric cabinet and a swing arm mechanism; the swing arm mechanism is driven by the electric cabinet to open and close the door leaf, and the stability and the reliability are good.
2. The door of the invention also comprises a door lock and a handle; the door lock is arranged on the door leaf and connected with the relay; through the cooperation of lock and relay, can realize the automatic switching of door leaf, the lock includes position sensor, through position sensor to the feedback of lock operating condition for relay control motor stall prevents that the motor from stifled commentaries on classics for a long time, burns out the motor.
3. The electric cabinet also comprises a box body, an induction piece and an anti-collision piece; the induction part, the anti-collision part, the control main board, the relay and the motor are all arranged on the box body; the bearing part of the box body is made of carbon steel, and the box body is sealed by an ethylene propylene diene monomer rubber pad, so that the protection grade of the box body is guaranteed.
4. The induction piece comprises a first induction piece and a second induction piece; the first sensing piece is convenient for detecting whether a person exists in the sensing area, so that a signal is transmitted to the control main board to automatically open or close the door leaf; the second sensing piece can record the opening and closing times of the door leaf through the contact with the swing arm mechanism, and provides maintenance reference data for the maintainer.
5. The anti-collision piece is arranged on the outer wall of the box body, so that the maximum opening angle of the door leaf can be effectively limited, and the door leaf is prevented from being collided.
6. The power supply comprises a first power supply and a second power supply; the first power supply is used for supplying power to the sensing piece and the position sensor; the second power supply is used for supplying power to the motor; and a dual-power mode is adopted, so that the reliability and the stability of the electric door are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a partial cross-sectional view of the door lock of FIG. 1;
FIG. 3 is a schematic diagram of the electric cabinet of FIG. 1;
FIG. 4 is a schematic structural view of the swing arm mechanism of FIG. 1;
wherein, 1, a door leaf; 1.1, door lock; 1.2; a handle; 1.3, an electromagnet; 1.4, a position sensor; 2. a box body; 2.1, controlling the main board; 2.2, a relay; 2.3, a motor; 2.4, a first sensing piece; 2.5, a second sensing piece; 2.6, an anti-collision piece; 2.7, a first power supply; 2.8, a second power supply; 3. a swing arm mechanism; 3.1, a first connecting rod; 3.2, a second connecting rod; 3.2.1, grooves.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example (b):
an electric door comprises a door, an electric cabinet and a swing arm mechanism 3, and has the following specific structure as shown in figures 1-4:
the door comprises a door leaf 1 and a door frame; the door leaf 1 is movably arranged on the door frame through hinge connection;
the electric cabinet comprises a control mainboard 2.1, a relay 2.2, a motor 2.3 and a power supply; the control main board 2.1 and the motor 2.3 are both connected with the relay 2.2; the control mainboard 2.1 controls the relay 2.2 to drive the motor 2.3, so that the rotation or stop of the motor 2.3 can be realized; the power supply is respectively connected with the control mainboard 2.1, the relay 2.2 and the motor 2.3;
one end of the swing arm mechanism 3 is connected with the door leaf 1, and the other end of the swing arm mechanism is connected with the output end of the motor 2.3.
The following are preferred for this embodiment:
the door leaf 1 is made of aluminum alloy and is light in weight; the aluminum honeycomb structure is arranged inside the aluminum honeycomb structure, so that the noise can be effectively reduced; still be equipped with the observation window of being convenient for observe door leaf inner structure on the door leaf, the observation window adopts toughened glass sealed, guarantees the inside leakproofness of door leaf.
The door also comprises a door lock 1.1 and a handle 1.2; the door lock 1.1 is arranged on the door leaf 1 and is connected with the relay 2.2; the handle 1.2 is arranged on the door leaf 1 and is used for opening and closing the door leaf 1.
The door lock 1.1 comprises a door lock body, an electromagnet 1.3 and a position sensor 1.4; the electromagnet 1.3 is connected with the relay 2.2 and corresponds to the door lock body (specifically, corresponds to a lock core in the door lock body, and other technologies of the door lock body refer to the existing door lock technology), and is used for controlling the opening or closing state of the door lock body by the relay 2.2; the position sensor 1.4 is respectively connected with the door lock body and the control main board 2.1 and used for feeding back the working state of the door lock body (the door lock body is in an opening or locking state) to the control main board 2.1.
The electric cabinet also comprises a box body 2, an induction part and an anti-collision part 2.6; the induction part, the anti-collision part 2.6, the control mainboard 2.1, the relay 2.2 and the motor 2.3 are all arranged on the box body 2; specifically, the induction part and the anti-collision part are arranged on the outer wall of the box body, and the control main board, the relay and the motor are all arranged in the box body; preferably, the box body is designed in a split mode, and the bearing part is made of carbon steel; the junction adopts the EPT rubber pad to seal, guarantees the protection level of box.
The sensing elements comprise a first sensing element 2.4 and a second sensing element 2.5; the first sensing piece 2.4 is connected with the control main board 2.1 and is arranged corresponding to the door leaf 1, specifically, arranged above the door leaf and used for monitoring whether a person exists in an area in front of the sensing door leaf; the second sensing member 2.5 comprises two sets of position switches; the position switch is connected with the control main board 2.1, and the times of opening and closing the door leaf 1 are recorded through the contact times with the swing arm mechanism 3.
And the anti-collision piece 2.6 is welded on the outer wall of the box body 2 and is in contact with the swing arm mechanism 3 to limit the opening angle of the door leaf 1.
The power supplies comprise a first power supply 2.7 and a second power supply 2.8; the first power supply 2.7 and the second power supply 2.8 are both arranged in the box body 2; the first power supply 2.7 is connected with the sensing piece and the position sensor 1.4 and is used for supplying power to the sensing piece and the position sensor 1.4; the second power supply 2.8 is respectively connected with the relay 2.2 and the motor 2.3, and the relay 2.2 can control the second power supply 2.8 to transmit or not transmit power to the motor 2.3.
The swing arm mechanism 3 comprises a first connecting rod 3.1 and a second connecting rod 3.2, as shown in fig. 4, the first ends of the first connecting rod 3.1 and the second connecting rod are movably connected, and the second ends are respectively connected with the door leaf and the output end of the motor.
The swing arm mechanism 3 is equipped with recess 3.2.1 with motor 2.3 junction for connect motor 2.3 output.
The working principle of the embodiment is as follows:
opening the door leaf: a first sensing part (such as a photoelectric sensor) monitors that people exist in a region in front of a door leaf, transmits signals to a control main board, controls the main board to drive a relay to act, controls an electromagnet to open a door lock body (specifically, the electromagnet pulls a door lock cylinder), and controls a second power supply to transmit power to a motor at the same time, so that the output end of the motor rotates towards the opening direction of the door leaf, and the door leaf is opened;
closing the door leaf: when the first sensing part monitors that no person is in the area in front of the door leaf for a long time, a signal is transmitted to the control main board, the control main board drives the relay to act, the relay controls the second power supply to transmit power to the motor, the output end of the motor rotates towards the closing direction of the door leaf, so that the door leaf is closed, and meanwhile, the electromagnet is driven to close the door lock body (specifically, the electromagnet is disconnected from the lock cylinder, and the lock cylinder returns);
the position sensor is used for feeding back the working state of the door lock body to the control main board, when the door lock body is in a back locking or unlocking state for a long time, the control main board controls the relay to act, the second power supply is controlled to stop supplying power to the motor, and the motor is prevented from being burnt due to long-time rotation blockage.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the technical scope of the present invention.
Claims (9)
1. An electric door is characterized by comprising a door, an electric cabinet and a swing arm mechanism (3);
the door comprises a door leaf (1) and a door frame; the door leaf (1) is movably arranged on the door frame;
the electric cabinet comprises a control main board (2.1), a relay (2.2), a motor (2.3) and a power supply; the control main board (2.1) and the motor (2.3) are both connected with the relay (2.2); the control main board (2.1) controls the relay (2.2) to drive the motor (2.3), so that the motor (2.3) can rotate or stop rotating; the power supply is respectively connected with the control main board (2.1), the relay (2.2) and the motor (2.3);
one end of the swing arm mechanism (3) is connected with the door leaf (1), and the other end of the swing arm mechanism is connected with the output end of the motor (2.3).
2. Electric door according to claim 1, characterized in that it further comprises a door lock (1.1) and a handle (1.2); the door lock (1.1) is arranged on the door leaf (1) and is connected with the relay (2.2); the handle (1.2) is arranged on the door leaf (1) and is used for opening and closing the door leaf (1).
3. Electric door according to claim 2, characterized in that the door lock (1.1) comprises a door lock body, an electromagnet (1.3) and a position sensor (1.4); the electromagnet (1.3) is connected with the relay (2.2) and corresponds to the door lock body, and is used for controlling the opening or closing state of the door lock body by the relay (2.2); and the position sensor (1.4) is respectively connected with the door lock body and the control main board (2.1) and is used for feeding back the working state of the door lock body to the control main board (2.1).
4. The electric door according to claim 3, characterized in that said electric cabinet further comprises a box body (2), an induction member and an anti-collision member (2.6); the induction part, the anti-collision part (2.6), the control main board (2.1), the relay (2.2) and the motor (2.3) are all arranged on the box body (2).
5. Electric door according to claim 4, characterized in that said induction means comprise a first induction means (2.4) and a second induction means (2.5); the first sensing piece (2.4) is connected with the control main board (2.1), is arranged corresponding to the door leaf (1), and is used for monitoring whether a person exists in a sensing area; the second sensing member (2.5) comprises two groups of position switches; the position switch is connected with the control main board (2.1) and records the opening and closing times of the door leaf (1) by contacting or not contacting with the swing arm mechanism (3).
6. The electric door according to claim 4, characterized in that the anti-collision member (2.6) is arranged on the outer wall of the box body (2) and is in contact with the swing arm mechanism (3) for limiting the opening angle of the door leaf (1).
7. The electrically operated door according to claim 4, characterized in that said power source comprises a first power source (2.7) and a second power source (2.8); the first power supply (2.7) and the second power supply (2.8) are both arranged in the box body (2); the first power supply (2.7) is connected with the sensing piece and the position sensor (1.4) and is used for supplying power to the sensing piece and the position sensor (1.4); the second power supply (2.8) is respectively connected with the relay (2.2) and the motor (2.3), and the relay (2.2) can control the second power supply (2.8) to transmit or not transmit power to the motor (2.3).
8. The electric door according to claim 1, characterized in that said swing arm mechanism (3) comprises a first link (3.1) and a second link (3.2); the first ends of the first connecting rod (3.1) and the second connecting rod (3.2) are movably connected, and the second ends are respectively connected with the door leaf and the output end of the motor.
9. The electric door according to claim 8, characterized in that the connection between the swing arm mechanism (3) and the motor (2.3) is provided with a groove (3.2.1) for connecting the output end of the motor (2.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010669799.9A CN111691784A (en) | 2020-07-13 | 2020-07-13 | Electric door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010669799.9A CN111691784A (en) | 2020-07-13 | 2020-07-13 | Electric door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111691784A true CN111691784A (en) | 2020-09-22 |
Family
ID=72485915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010669799.9A Pending CN111691784A (en) | 2020-07-13 | 2020-07-13 | Electric door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111691784A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893095A (en) * | 2022-04-22 | 2022-08-12 | 湖南联诚轨道装备有限公司 | Intelligent door control system for sliding groove structure of railway locomotive |
| TWI814639B (en) * | 2022-11-10 | 2023-09-01 | 震亞物聯網科技有限公司 | Smart door lock system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2746096Y (en) * | 2004-07-26 | 2005-12-14 | 蔡文东 | Fire fighting antitheft safety door with hidden lock |
| CN105781327A (en) * | 2013-12-31 | 2016-07-20 | 胡妍 | Working method of anti-theft device |
| CN205502775U (en) * | 2016-03-31 | 2016-08-24 | 陈旗 | Passive electronic lock through smart mobile phone power supply |
| CN206816081U (en) * | 2017-04-26 | 2017-12-29 | 爱威机电(南京)有限公司 | Automatic hinge door |
| CN210738333U (en) * | 2019-09-03 | 2020-06-12 | 桂林航天工业学院 | Access control device |
| CN212296048U (en) * | 2020-07-13 | 2021-01-05 | 湖南联诚轨道装备有限公司 | Electric door |
-
2020
- 2020-07-13 CN CN202010669799.9A patent/CN111691784A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2746096Y (en) * | 2004-07-26 | 2005-12-14 | 蔡文东 | Fire fighting antitheft safety door with hidden lock |
| CN105781327A (en) * | 2013-12-31 | 2016-07-20 | 胡妍 | Working method of anti-theft device |
| CN205502775U (en) * | 2016-03-31 | 2016-08-24 | 陈旗 | Passive electronic lock through smart mobile phone power supply |
| CN206816081U (en) * | 2017-04-26 | 2017-12-29 | 爱威机电(南京)有限公司 | Automatic hinge door |
| CN210738333U (en) * | 2019-09-03 | 2020-06-12 | 桂林航天工业学院 | Access control device |
| CN212296048U (en) * | 2020-07-13 | 2021-01-05 | 湖南联诚轨道装备有限公司 | Electric door |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893095A (en) * | 2022-04-22 | 2022-08-12 | 湖南联诚轨道装备有限公司 | Intelligent door control system for sliding groove structure of railway locomotive |
| TWI814639B (en) * | 2022-11-10 | 2023-09-01 | 震亞物聯網科技有限公司 | Smart door lock system |
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