Active identification anti-collision device applied to elevator door

Abstract

An active recognition anti-collision device applied to an elevator door comprises a light curtain emitter, a light curtain receiver, a light curtain cable and a terminal controller, and the light curtain emitter and the light curtain receiver are installed on the elevator door and move along with the elevator door; the terminal controller provides power for the light curtain emitter and the light curtain receiver and reads a light curtain detection signal, the light curtain emitter and the light curtain receiver are installed on an elevator door and move along with the elevator door, the light curtain emitter emits a fan-shaped light curtain to the outer side of the elevator door to form a detection area, and when the terminal controller receives the detection signal, the light curtain emitter emits the fan-shaped light curtain to the outer side of the elevator door to form the detection area. The terminal controller sends a door opening signal to the elevator door opening and closing device so as to open the elevator door, collision between an object and the elevator door is avoided, whether the object exists at an elevator opening or not is detected in real time through the fan-shaped light curtain emitted by the light curtain emitter, the active recognition function is achieved, and when the object approaches, the elevator door is actively opened so as to avoid collision; the response is quicker, the initiative is stronger, and the safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator door anti-collision, and particularly relates to an active recognition anti-collision device applied to elevator doors. Background Art

[0002] With the acceleration of the urbanization process, elevators have become indispensable vertical transportation tools in modern buildings. However, accidents where elevator doors collide with obstacles such as pedestrians and goods during the closing process occur frequently, which may not only cause damage to the elevator doors but also cause harm to passengers.

[0003] Traditional elevator door anti-collision devices mostly adopt passive protection methods. For example, a collision-proof elevator door pocket disclosed in a Chinese utility model patent with a patent application number of CN202122405774.0 includes a door pocket board arranged on the inner wall of the elevator door opening, a door pocket line arranged on the outer wall of the elevator door opening, and a protective cover board. The door pocket line is perpendicular to the door pocket board, and the protective cover board is detachably arranged at the bottom of the elevator door pocket. The protective cover board includes a first protective board, a second protective board, a third protective board, a first anti-collision strip, and a second anti-collision strip. By arranging a protective cover board outside the elevator door pocket, direct impact on the elevator door pocket can be avoided, which has the advantages of protecting the elevator door pocket, extending the service life of the elevator door pocket, and reducing the replacement frequency of the elevator door pocket.

[0004] However, the above solution has a slow response when dealing with emergencies and cannot actively identify and avoid collisions. Therefore, the problem of collisions cannot be solved at the root. Even with the protection of the door pocket, safety hazards are still likely to occur when colliding with the elevator door. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the utility model provides an active recognition anti-collision device applied to elevator doors.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] An active recognition anti-collision device applied to elevator doors includes a light curtain emitter, a light curtain receiver, a light curtain cable, and a terminal controller. The light curtain emitter and the light curtain receiver are installed on the elevator door and move with the elevator door. The light curtain emitter and the light curtain receiver are respectively connected to the terminal controller through the light curtain cable. The terminal controller provides power for the light curtain emitter and the light curtain receiver and reads the light curtain detection signal. The light curtain emitter emits a fan-shaped light curtain to form a detection area outside the elevator door. When there is an object in the detection area, a detection signal is formed on the light curtain receiver. The light curtain receiver transmits the detection signal to the terminal controller. The terminal controller is also connected to the elevator door opening and closing device. When the terminal controller receives the detection signal, it opens the elevator door through the elevator door opening and closing device.

[0008] Furthermore, the detection area is triangular at the elevator entrance.

[0009] In the present utility model, the light curtain cable includes an output cable and a receiving cable. The light curtain transmitter is connected to the output end of the terminal controller through the output cable, and the light curtain receiver is connected to the receiving end of the terminal controller through the receiving cable.

[0010] Furthermore, both the output cable and the receiving cable include a connecting wire and an extension wire. One end of the connecting wire is fixedly connected to the light curtain transmitter and the light curtain receiver, and the other end of the connecting wire is connected to the extension wire through an adapter joint. The length of the connecting wire is fixed, and the length of the extension wire can be customized according to the actual installation path.

[0011] In the present utility model, the light curtain transmitter and the light curtain receiver have the same structure, and both include a mounting housing, a protective cover, a circuit board, and a lamp tube. The mounting housing is a long strip-shaped structure and extends along the height direction of the elevator door. The interior of the mounting housing is hollowed out to form a mounting cavity. On the side of the mounting housing where the elevator door closes, there is also a light outlet, and the light outlet communicates with the mounting cavity. The circuit board is fixed on the side surface of the mounting cavity close to the elevator door, and the lamp tube is connected to the circuit board and aligned with the light outlet. The protective cover is installed at the light outlet to form a protection.

[0012] Furthermore, the cross-section of the mounting housing is a "C" - shaped structure and is integrally formed by stretching a profile.

[0013] Furthermore, on the light curtain transmitter, the lamp tube is a transmitting tube, and on the light curtain receiver, the lamp tube is a receiving tube.

[0014] Furthermore, on both sides of the circuit board and on both sides of the light outlet in the mounting cavity, there are sliding grooves. The circuit board and the protective cover are slidably fitted in the sliding grooves, and the circuit board and the protective cover slide into the sliding grooves from one end of the mounting housing.

[0015] Furthermore, end caps are provided on both end faces of the mounting housing. The end caps are snap - fitted with the mounting housing. The end caps limit the circuit board and the protective cover up and down, and after being snapped tightly, the end caps are fixed to the mounting housing by screws.

[0016] In the present utility model, mounting holes are also provided on the mounting housing. The mounting holes vertically penetrate the mounting housing towards the direction of the elevator door. Bolts are used to pass through the mounting holes from the outside to the inside to fix the mounting housing on the elevator door; through holes for the bolts to pass through are reserved on the circuit board.

[0017] The present utility model has the following advantages and beneficial effects:

[0018] The light curtain emitter and the light curtain receiver are installed on the elevator door and move with the elevator door. The light curtain emitter emits a fan-shaped light curtain to the outside of the elevator door to form a detection area. The terminal controller reads the light curtain detection signal and is connected to the elevator door opening and closing device. When the terminal controller receives the detection signal, it sends an opening signal to the elevator door opening and closing device to open the elevator door, avoiding collisions between objects and the elevator door. By emitting a fan-shaped light curtain through the light curtain emitter, it can detect in real time whether there are objects at the elevator entrance, realizing the function of active recognition. When an object approaches, the elevator door is actively opened to avoid collisions, with a faster response, stronger initiative, and higher safety. Description of the Drawings

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0020] Figure 1 Schematic diagram of the anti-collision recognition device in this embodiment;

[0021] Figure 2 is Figure 1 A - A cross-sectional view in

[0022] Figure 3 Cross-sectional view of the installation housing in this embodiment;

[0023] Figure 4 Schematic diagram of the light curtain cable in this embodiment. Specific Embodiment

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. The present utility model is not limited to the following embodiments.

[0025] As Figures 1 to 4As shown, this embodiment discloses an active identification and anti-collision device applied to an elevator door, comprising a light curtain transmitter 1, a light curtain receiver 2, a light curtain cable 3 and a terminal controller 4. The light curtain transmitter 1 and the light curtain receiver 2 are installed on the elevator door and move with the elevator door; the light curtain transmitter 1 and the light curtain receiver 2 are respectively connected to the terminal controller 4 through the light curtain cable 3, and the terminal controller 4 provides power to the light curtain transmitter 1 and the light curtain receiver 2 and reads the light curtain detection signal. The light curtain transmitter 1 emits a fan-shaped light curtain to the outside of the elevator door to form a detection area. When there is an object in the detection area, the object will reflect the light emitted by the light curtain transmitter 1. The detection signal is emitted to the light curtain receiver 2, and then the light curtain receiver 2 transmits the detection signal to the terminal controller 4; the terminal controller 4 is also connected to the elevator door opening and closing device. When the terminal controller 4 receives the detection signal, the terminal controller 4 sends a door opening signal to the elevator door opening and closing device to open the elevator door to avoid collision between the object and the elevator door. Preferably, the detection area is triangular in shape at the elevator entrance; the fan-shaped light curtain is emitted by the light curtain transmitter 1 to detect whether there is an object at the elevator entrance in real time, so as to realize the function of active identification. When the object approaches, the elevator door is actively opened to avoid collision, with faster response, stronger initiative and higher safety.

[0026] In this embodiment, the light curtain cable 3 includes an output cable 31 and a receiving cable 32. The light curtain transmitter 1 is connected to the output end 41 of the terminal controller 4 through the output cable 31, and the light curtain receiver 2 is connected to the receiving end 42 of the terminal controller 4 through the receiving cable 32. The light curtain transmitter 1 and the light curtain receiver 2 are connected by independent cables, which can improve the response speed of the terminal controller 4, so that the elevator door can respond in time. Specifically, the output cable 31 and the receiving cable 32 each include a connecting line 300 and an extension line 301. One end of the connecting line 300 is fixedly connected to the light curtain transmitter 1 and the light curtain receiver 2, and the other end of the connecting line 300 is connected to the extension line 301 through an adapter 302. The light curtain transmitter 1 and the light curtain receiver 2 can be quickly disassembled or installed through the adapter 302, and plugging and unplugging are more convenient during installation or maintenance; preferably, the length of the connecting line 300 is fixed, and the length of the extension line 301 can be customized according to actual conditions so as to be applicable to elevators of different sizes and types.

[0027] In this embodiment, the light curtain emitter 1 and the light curtain receiver 2 have the same structure, both including a mounting housing 11, a protective cover 12, a circuit board 13 and a lamp tube 14. Specifically, on the light curtain emitter 1, the lamp tube 14 is a transmitting tube, and on the light curtain receiver 2, the lamp tube 14 is a receiving tube; the mounting housing 11 is a long strip structure and is installed along the height direction of the elevator door. The inside of the mounting housing 11 is hollow to form a mounting cavity 10. On the side of the mounting housing 11 where the elevator door closes, there is also a light outlet 15, and the light outlet 15 communicates with the mounting cavity 10. The circuit board 13 is fixed on the side surface of the mounting cavity 10 close to the elevator door, and the lamp tube 14 is connected to the circuit board 13 and aligned with the light outlet 15. The protective cover 12 is installed at the light outlet 15 to form a protection; preferably, the cross-section of the mounting housing 11 is "C"-shaped and is integrally formed by stretching a profile.

[0028] Furthermore, for the convenience of assembly, sliding grooves 16 are provided on both sides of the circuit board 13 and on both sides of the light outlet 15 in the mounting cavity 10. The circuit board 13 and the protective cover 12 are slidably fitted in the sliding grooves 16. Preferably, the circuit board 13 and the protective cover 12 are slid into the sliding grooves 16 from one end of the mounting housing 11 from top to bottom, which is simple and convenient.

[0029] Furthermore, end caps 17 are provided on both end faces of the mounting housing 11. The end caps 17 are snap-fitted with the mounting housing 11. The end caps 17 limit the circuit board 13 and the protective cover 12 up and down to prevent them from slipping out of the sliding grooves 16; preferably, in order to improve the fixing effect of the end caps 17, the end caps 17 are fixed to the mounting housing 11 by screws after being snapped in.

[0030] In this embodiment, a mounting hole 18 is also provided on the mounting housing 11. The mounting hole 18 vertically penetrates the mounting housing 11 in the direction of the elevator door. Bolts are used to pass through the mounting hole 18 from the outside to the inside to fix the mounting housing 11 on the elevator door; preferably, through holes for the bolts to pass through are reserved on the circuit board 13 to prevent damage to the circuit board 13 when the bolts pass through the mounting hole 18.

[0031] What is described above in this specification is only an example of the present invention. Those skilled in the technical field to which the present invention belongs can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the content of this specification of the present invention or exceed the scope defined by this claim book, they should belong to the protection scope of the present invention.

Claims

1. An active recognition anti-collision device applied to elevator doors, characterized in that: It includes a light curtain emitter (1), a light curtain receiver (2), a light curtain cable (3) and a terminal controller (4). The light curtain emitter (1) and the light curtain receiver (2) are installed on the elevator door and move with the elevator door. The light curtain emitter (1) and the light curtain receiver (2) are respectively connected to the terminal controller (4) through the light curtain cable (3). The terminal controller (4) provides power for the light curtain emitter (1) and the light curtain receiver (2) and reads the light curtain detection signal. The light curtain emitter (1) emits a fan-shaped light curtain to the outside of the elevator door to form a detection area. When there is an object in the detection area, a detection signal is formed on the light curtain receiver (2). The light curtain receiver (2) transmits the detection signal to the terminal controller (4). The terminal controller (4) is also connected to the elevator door opening and closing device. When the terminal controller (4) receives the detection signal, it opens the elevator door through the elevator door opening and closing device.

2. The active recognition anti-collision device applied to an elevator door according to claim 1, characterized in that: The detection area presents a triangular shape at the elevator entrance.

3. The active recognition anti-collision device applied to an elevator door according to claim 1, wherein: The light curtain cable (3) includes an output cable (31) and a receiving cable (32). The light curtain emitter (1) is connected to the output end (41) of the terminal controller (4) through the output cable (31), and the light curtain receiver (2) is connected to the receiving end (42) of the terminal controller (4) through the receiving cable (32).

4. The active recognition anti-collision device applied to an elevator door according to claim 3, characterized in that: Both the output cable (31) and the receiving cable (32) include a connecting wire (300) and an extension wire (301). One end of the connecting wire (300) is fixedly connected to the light curtain emitter (1) and the light curtain receiver (2), and the other end of the connecting wire (300) is connected to the extension wire (301) through an adapter joint (302). The length of the connecting wire (300) is fixed, and the length of the extension wire (301) can be customized according to the actual installation path.

5. The active recognition anti-collision device applied to an elevator door according to claim 1, wherein: The light curtain emitter (1) and the light curtain receiver (2) have the same structure, and both include a mounting housing (11), a protective cover (12), a circuit board (13) and a lamp tube (14). The mounting housing (11) is a long strip structure and extends along the height direction of the elevator door. The inside of the mounting housing (11) is hollow to form a mounting cavity (10). On the side of the mounting housing (11) where the elevator door closes, there is also a light outlet (15). The light outlet (15) communicates with the mounting cavity (10). The circuit board (13) is fixed on the side surface close to the elevator door inside the mounting cavity (10). The lamp tube (14) is connected to the circuit board (13) and aligned with the light outlet (15). The protective cover (12) is installed at the light outlet (15) to form a protection.

6. The active recognition anti-collision device applied to an elevator door according to claim 5, wherein: The cross-section of the mounting housing (11) is a "C" - shaped structure and is integrally formed by stretching a profile.

7. The active recognition anti-collision device applied to an elevator door according to claim 5, characterized in that: On the light curtain emitter (1), the lamp tube (14) is a transmitting tube, and on the light curtain receiver (2), the lamp tube (14) is a receiving tube.

8. The active recognition anti-collision device applied to an elevator door according to claim 5, characterized in that: Chutes (16) are provided on both sides of the circuit board (13) and on both sides of the light outlet (15) within the installation cavity (10). The circuit board (13) and the protective cover (12) are slidably engaged in the chutes (16), and the circuit board (13) and the protective cover (12) are slid into the chutes (16) from one end of the installation housing (11).

9. The active recognition anti-collision device applied to an elevator door according to claim 5, characterized in that: End caps (17) are further provided on both end faces of the installation housing (11). The end caps (17) are snap-fitted with the installation housing (11). The end caps (17) limit the circuit board (13) and the protective cover (12) vertically. After the end caps (17) are tightened, they are fixed to the installation housing (11) by screws.

10. The active recognition anti-collision device applied to an elevator door according to claim 5, characterized in that: Mounting holes (18) are further provided on the installation housing (11). The mounting holes (18) vertically penetrate the installation housing (11) in the direction of the elevator door. The installation housing (11) is fixed to the elevator door by bolts passing through the mounting holes (18) from the outside to the inside; through holes for the bolts to pass through are reserved on the circuit board (13).

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