Electric double-opening vertical hinged door with non-contact detection safety switch

Abstract

The utility model relates to a non-contact detection safety switch electric double-opening vertical hinged door, which comprises a left door (1), a right door (2), a door frame (3), a driving device (4) and a control device (5), ultrasonic sensors (6) are respectively arranged on the left door (1) and the right door (2), and a light curtain device (7) consisting of an emitter (71) and a receiver (72) is arranged on the left door (1) and the right door (2). The emitter (71) and the receiver (72) are horizontally and rotationally mounted at the right vertical edge position of the left door (1) or the left vertical edge position of the right door (2) respectively, and a synchronizing device (8) for driving the emitter and the receiver to synchronously rotate when the left door and the right door are opened or closed is arranged between the emitter and the door frame (3) and between the receiver and the door frame (3). Through non-contact detection, the defect that an existing electric double-opening vertical hinged door needs to be reversely opened after being subjected to resistance is overcome, and the failure rate and danger are reduced. The device is lower in operation cost and more energy-saving in use.

Description

Technical Field

[0001] This utility model relates to an electric double-leaf swing door, specifically to an electric double-leaf swing door with a non-contact detection safety switch. Background Technology

[0002] Electric double-leaf swing doors are motor-driven swing doors that open and close synchronously. They are commonly used as entrances in hotels, shopping malls, and villa elevators. The opening of these doors is typically controlled by sensors or manual intervention, and they automatically close after a certain delay. Even if there are people or objects in the area between the two doors, they will continue to close until one or both doors push against or trap a person or object, creating sufficient closing resistance that stalls the motor. The motor current exceeds the control device's set value, at which point the control device reverses the motor and opens the doors. This passive, obstructed opening method of electric double-leaf swing doors can easily injure people, especially children, or damage objects. The drive motor's lifespan is also affected by frequent stalls and excessive current, and the transmission mechanism between the motor and the doors is prone to damage due to excessive force. These electric double-leaf swing doors have a high failure rate and maintenance rate. With long-term use, the opening and closing of the two doors can easily become asynchronous, resulting in high power consumption and energy waste. Summary of the Invention

[0003] The purpose of this utility model is to provide a non-contact detection safety switch electric double swing door that opens without obstruction when closing, does not pinch or damage people or objects when closing, does not have a lifespan affected by frequent high current of the drive motor, is not easily damaged by the transmission device, has a low failure rate and does not require frequent maintenance, and makes it easy for the two doors to keep synchronized. It is energy-saving and power-efficient to use.

[0004] The technical solution of this utility model is as follows: It includes a left door, a right door, a door frame, a drive device, and a control device. The left side of the left door is hinged to the door frame, and the right side of the right door is hinged to the door frame. The drive device is mounted on the door frame and connected to the left and right doors respectively. The control device is connected to the drive device, controlling the drive device to drive the left and right doors to open and close synchronously. The left and right doors are each equipped with an ultrasonic sensor connected to the control device, used to detect whether there are foreign objects near the door and transmit the detected information to the control device. The left and right doors are also equipped with an ultrasonic transmitter... The transmitter and receiver constitute a light curtain device connected to the control device. The transmitter and receiver are installed on the right side of the left door or the left side of the right door, respectively, with the transmitter having a row of transmitter heads facing the receiver in the vertical direction. The receiver has a row of receiver heads facing the transmitter in the vertical direction. A synchronization device is provided between the transmitter and receiver and the door frame, which drives the transmitter and receiver to rotate synchronously when the left and right doors are opened or closed, so that the transmitter heads on the transmitter and the receiver heads on the receiver are always aligned horizontally.

[0005] The technical advantages of this invention are as follows: It utilizes ultrasonic sensors and a light curtain device to overcome the shortcomings of existing electric double-leaf swing doors that require resistance to open in the reverse direction through non-contact detection, thus reducing the failure rate and danger. Its drive mechanism is not affected by excessive current due to frequent obstruction, thus extending its service life. It is less prone to damage during use and requires less maintenance, making it easier for the two doors to maintain synchronization. It has lower operating costs and is more energy-efficient. It prevents injury to people or damage to objects when closing the door, and also prevents collisions with people or objects outside the door when opening, making it safer and more user-friendly. Attached Figure Description

[0006] Figure 1 This is a partial three-dimensional sectional view of Embodiment 1 of the present utility model;

[0007] Figure 2 This is a control principle diagram of an embodiment of the present utility model;

[0008] Figure 3 This is a top view of the structure of Embodiment 2 of this utility model. Detailed Implementation

[0009] Example 1, as Figure 1 , Figure 2As shown, it includes a left door 1, a right door 2, a door frame 3, a drive unit 4, and a control unit 5. The left side of the left door 1 is hinged to the door frame 3, and the right side of the right door 2 is hinged to the door frame 3. The drive unit 4 is mounted on the door frame 3 and connected to both the left door 1 and the right door 2. The control unit 5 is connected to the drive unit 4 and controls the drive unit 4 to drive the left door 1 and the right door 2 to open and close synchronously. The left door 1 and the right door 2 are each equipped with an ultrasonic sensor 6 connected to the control unit 5, used to detect the presence of foreign objects near the door and transmit the detected information to the control unit 5. The left door 1 and the right door 2 are each equipped with a transmitter 71 and a receiver 72 connected to the control unit 5. The light curtain device 7 connected to device 5, the transmitter 71 and the receiver 72 are respectively installed horizontally along the vertical direction at the right side of the left door 1 or the left side of the right door 2. The transmitter 71 is provided with a row of transmitter heads 73 facing the receiver 72 along the vertical direction. The receiver 72 is provided with a row of receiver heads 74 facing the transmitter 71 in the vertical direction. There is a synchronization device 8 between the transmitter 71 and the receiver 72 and the door frame 3, which drives the transmitter 71 and the receiver 71 to rotate synchronously when the left door 1 and the right door 2 are opened or closed, so that the transmitter heads 73 on the transmitter 71 and the receiver heads 74 on the receiver 72 are always facing each other left and right.

[0010] Left door 1 and right door 2 are respectively equipped with door hinges 12 that rotate downwards and upwards to engage with door frame 3, hinged to door frame 3. The upper door hinge 12 protrudes upwards above door frame 3. The drive device 4 is a geared motor fixed to door frame 3, with its output shaft axially connected downwards to the upward-facing door hinge 12. Left door 1 and right door 2 may be driven by the same geared motor through a transmission device. Left door 1 and right door 2 may also be hinged to door frame 3.

[0011] Ultrasonic sensors 6 are installed on both sides of the left door 1 and the right door 2. Two ultrasonic sensors 6 are installed on the lower middle part of each side of the left door 1 and the right door 2, one on the left and one on the right.

[0012] The synchronization device 8 consists of a moving synchronization wheel 81, a fixed synchronization wheel 82, and a synchronization belt 83. The moving synchronization wheel 81 is installed on the upper end of the transmitter 71 and the receiver 72. The fixed synchronization wheel 82 is fixedly installed on the door frame 3 above the hinge axis between the left door 1 and the right door 2 and the door frame 3. The moving synchronization wheel 81 and the fixed synchronization wheel 82 on the left door 1 are connected by the synchronization belt 83 extending along the upper edge of the left door 1. The moving synchronization wheel 81 and the fixed synchronization wheel 82 on the right door 2 are connected by the synchronization belt 83 extending along the upper edge of the right door 2. When the left door 1 and the right door 2 open and close synchronously, the synchronization device 8 drives the transmitter 71 and the receiver 72 to rotate synchronously on the left door 1 and the right door 2, so that the transmitting heads 73 on the transmitter 71 and the receiving heads 74 on the receiver 72 are always aligned horizontally.

[0013] The top surfaces of the left door 1 and the right door 2 are respectively provided with grooves 10 along the extension direction of the top surface to accommodate the moving synchronous pulley 81, the fixed synchronous pulley 82 and the synchronous belt 83.

[0014] The moving synchronous pulley 81, the fixed synchronous pulley 82, and the synchronous belt 83 of the synchronization device 8 can also be sprockets and chains, or pulleys and belts (flat belts, V-belts, etc.), which can also achieve the synchronous control function.

[0015] The transmitter 71 and receiver 72 are respectively provided with rotating shafts at the upper and lower ends, which are rotatably engaged with the left door 1 and the right door 2. The moving synchronous wheel 81 is fixedly installed at the upper end of the rotating shaft at the upper end of the transmitter 71 and receiver 72. The fixed synchronous wheel 82 is fixedly installed upward on the door frame 3 and meshes with the synchronous belt 83. The axis of the fixed synchronous wheel 82 is concentric with the axis of the left door 1 and the right door 2 that are hinged to the door frame 3, so as to ensure that the transmitter 71 and receiver 72 of the light curtain device 7 move synchronously with the left door 1 and the right door 2.

[0016] Example 2, as Figure 3 As shown, the difference from Embodiment 1 is that the synchronization device 8 is composed of a movable short link 84, a fixed short link 85, and a long link 86. One end of the movable short link 84 is fixedly connected laterally to the upper end of the transmitter 71 and the receiver 72. One end of the fixed short link 85 is fixedly connected to the door frame 3 above the hinge axis between the left door 1 and the right door 2 and the door frame 3. One long link 86 extends along the upper side of the left door 1, and its two ends are hinged to the free ends of the movable short link 84 and the fixed short link 85 on the left door 1, respectively. Another long link 86 extends along the upper side of the right door 2, and its two ends are hinged to the free ends of the movable short link 84 and the fixed short link 85 on the right door 2, respectively. When the left door 1 and the right door 2 open and close synchronously, the moving short link 84, the fixed short link 85, the long link 86 and the left door 1 (right door 2) form a four-bar linkage mechanism, which drives the transmitter 71 and the receiver 72 to rotate synchronously on the left door 1 and the right door 2, so that each transmitter head 73 on the transmitter 71 and each receiver head 74 on the receiver 72 are always facing each other left and right.

[0017] The top surfaces of the left door 1 and the right door 2 are respectively provided with grooves 20 along the extension direction of the top surface to accommodate the moving short connecting rod 84, the fixed short connecting rod 85 and the long connecting rod 86.

[0018] Working principle:

[0019] When this electric double swing door is stationary during normal use, if the ultrasonic sensor 6 (radar) detects a person or object near the door on one side of the opening or closing direction of the left door 1 and right door 2, it will not control the opening or closing of the left door 1 and right door 2. During the opening or closing process, if a person or object is detected near the door on one side of the opening or closing direction of the left door 1 and right door 2, it will immediately stop the opening or closing of the left door 1 and right door 2. If the ultrasonic sensor 6 (radar) does not detect any foreign objects near the door on one side of the opening or closing direction of the left door 1 and right door 2, it will control the left door 1 and right door 2 to open or close normally and synchronously.

[0020] Under the action of the synchronization device 8, each transmitter head 73 on the transmitter 71 located on the right side of the left door 1 (or the left side of the right door 2) will always be directly opposite each receiver head 74 on the receiver 72 located on the left side of the right door 2 (or the right side of the left door 1). When the left door 1 and the right door 2 are open, if there is a person or object between the right side of the left door 1 and the left side of the right door 2, it will block part of the light curtain emitted by each transmitter head 73 on the transmitter 71 to each receiver head 74 on the receiver 72. The transmitter 71 and the receiver 72 of the light curtain device 7 will send the detected information to the control device 5. The control device 5 will not control the drive device 4 to drive the left door 1 and the right door 2 to close, so as to prevent people or objects from being trapped, and to prevent the left door 1 and the right door 2 from being subjected to additional resistance when closing. If there is no person or object between the right side of the left door 1 and the left side of the right door 2 when closing, the control device 5 will control the drive device 4 to drive the left door 1 and the right door 2 to close normally and synchronously.

[0021] This type of electric double swing door does not require the door to be controlled to open or close when it encounters a person or object. Instead, it uses ultrasonic sensors 6 and light curtain devices 7 for non-contact detection, which greatly reduces the operating current of the drive motor, making it more energy-efficient and extending the service life of the drive motor and transmission device 4.

Claims

1. A non-contact detection safety switch electric double swing door, comprising a left door (1), a right door (2), a door frame (3), a drive device (4), and a control device (5), wherein the left side of the left door (1) is hinged to the door frame (3), and the right side of the right door (2) is hinged to the door frame (3), the drive device (4) is mounted on the door frame (3) and connected to the left door (1) and the right door (2) respectively, and the control device (5) is connected to the drive device (4), controlling the drive device (4) to drive the left door (1) and the right door (2) to open and close synchronously, characterized in that: The left door (1) and right door (2) are respectively equipped with ultrasonic sensors (6) connected to the control device (5) to detect whether there are foreign objects near the door and transmit the detected information to the control device (5). The left door (1) and right door (2) are equipped with light curtain devices (7) consisting of a transmitter (71) and a receiver (72) connected to the control device (5). The transmitter (71) and receiver (72) are respectively mounted on the right side of the left door (1) or the left side of the right door (2) in the vertical direction. A row of transmitter heads (73) facing the receiver (72) is provided along the vertical direction of the upper edge of the receiver (72). A row of receiver heads (74) facing the transmitter (71) is provided along the vertical direction of the upper edge of the receiver (72). A synchronization device (8) is provided between the transmitter (71) and the receiver (72) and the door frame (3) to drive the transmitter (71) and the receiver (72) to rotate synchronously when the left door (1) and the right door (2) are opened or closed, so that the transmitter heads (73) on the transmitter (71) and the receiver heads (74) on the receiver (72) are always facing each other left and right.

2. The non-contact detection safety switch electric double-hung casement door according to claim 1, wherein The left door (1) and right door (2) are respectively provided with door hinges (12) that rotate downward and upward with the door frame (3) to hinge the left door (1) and right door (2) to the door frame (3). The upper door hinge (12) protrudes upward to the top of the door frame (3). The drive device (4) is fixed on the door frame (3) and the output axis is axially connected to the upper door hinge (12).

3. The non-contact detection safety switch electric double-hung casement door in accordance with claim 1, wherein The left door (1) and the right door (2) are hinged to the door frame (3) by hinges.

4. The non-contact detection safety switch electric double-hung casement door in accordance with claim 1, wherein Ultrasonic sensors (6) are provided on both sides of the left door (1) and the right door (2).

5. The non-contact detection safety switch electric double-hung casement door in accordance with claim 4, wherein Two ultrasonic sensors (6) are respectively installed on the lower middle part of the left door (1) and the right door (2).

6. The non-contact detection safety switch electric double-hung casement door in accordance with claim 1, wherein The synchronization device (8) consists of a moving synchronous wheel (81), a fixed synchronous wheel (82), and a synchronous belt (83). The moving synchronous wheel (81) is installed on the upper end of the transmitter (71) and the receiver (72). The fixed synchronous wheel (82) is fixedly installed on the door frame (3) above the hinge axis between the left door (1) and the right door (2). The moving synchronous wheel (81) and the fixed synchronous wheel (82) on the left door (1) are connected by a synchronous belt (83) extending along the upper edge of the left door (1). The moving synchronous wheel (81) and the fixed synchronous wheel (82) on the right door (2) are connected by a synchronous belt (83) extending along the upper edge of the right door (2).

7. The non-contact detection safety switch electric double-hung casement door in accordance with claim 6, wherein The top surfaces of the left door (1) and the right door (2) are respectively provided with grooves (10) for accommodating the moving synchronous wheel (81), the fixed synchronous wheel (82) and the synchronous belt (83) along the extension direction of the top surface.

8. The non-contact detection safety switch electric double-hung casement door in accordance with claim 6, wherein The transmitter (71) and receiver (72) are respectively provided with rotating shafts that rotate with the left door (1) and right door (2). The moving synchronous wheel (81) is fixedly installed on the upper end of the rotating shaft of the transmitter (71) and receiver (72). The fixed synchronous wheel (82) is fixedly installed on the door frame (3) and meshes with the synchronous belt (83). The axis of the fixed synchronous wheel (82) is concentric with the axis of the left door (1) and right door (2) that is hinged to the door frame (3).

9. The non-contact detection safety switch electric double-hung casement door in accordance with claim 1, wherein The synchronization device (8) consists of a movable short link (84), a fixed short link (85), and a long link (86). One end of the movable short link (84) is fixedly connected laterally to the upper end of the transmitter (71) and the receiver (72). One end of the fixed short link (85) is fixedly connected to the door frame (3) above the hinge axis between the left door (1) and the right door (2) and the door frame (3). A long link (86) extends along the upper side of the left door (1) and its two ends are hinged to the free ends of the movable short link (84) and the fixed short link (85) on the left door (1), respectively. Another long link (86) extends along the upper side of the right door (2) and its two ends are hinged to the free ends of the movable short link (84) and the fixed short link (85) on the right door (2), respectively.

10. The non-contact detection safety switch electric double-hung casement door in accordance with claim 9, wherein The top surfaces of the left door (1) and the right door (2) are respectively provided with grooves (20) for accommodating the moving short connecting rod (84), the fixed short connecting rod (85) and the long connecting rod (86) along the extension direction of the top surface.

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