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

Abstract

The invention 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 arranged on the left door (1) and the right door (2) respectively, and light curtain devices (7) composed of emitters (71) and receivers (72) are 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] The invention relates to an electric double-opening swing door, in particular to an electric double-opening swing door with a non-contact detection safety switch. Background Art

[0002] Electric double-hinged swing doors are motor-driven, with two doors opening and closing synchronously. They are commonly used as entrances and exits in places like hotels, shopping malls, and villa elevators. These doors typically open with a sensor or manual control, automatically closing after a set delay. Even if someone or an object is between the two doors during closing, the doors will continue to close until one or both doors push against a person or object, or become trapped between them. This creates sufficient resistance to closing, stalling the drive motor and causing the motor current to exceed the control setting. The control then reverses the motor and opens the doors. This passive, blocked opening method of electric double-hinged swing doors can easily trap people, especially children, or damage objects. Frequent stalls and excessive current draw on the drive motor shorten its lifespan, and the transmission mechanism between the motor and doors can be damaged by excessive force. These electric double-hinged swing doors have a high failure rate and maintenance requirements. Over time, the two doors can open and close out of sync, resulting in high energy consumption and a poor energy efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a non-contact detection safety switch electric double-opening swing door that can open the door without being blocked by closing the door, will not pinch people or damage objects when closing the door, will not affect the service life of the driving motor due to frequent excessive current, is not easy to be damaged by the transmission device, has a low failure rate and does not require frequent maintenance, is easy to keep the two doors synchronized, and is energy-saving and energy-saving to use.

[0004] The technical solution of the present invention is: it includes a left door, a right door, a door frame, a driving 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 driving device is installed on the door frame and is respectively connected to the left door and the right door. The control device is connected to the driving device, and the driving device is controlled to drive the left door and the right door to open and close synchronously. The left door and the right door are respectively provided with an ultrasonic sensor connected to the control device for detecting whether there is a foreign object near the door and transmitting the detected information to the control device. The left door and the right door are provided with a transmitter. A light curtain device consisting of a transmitter and a receiver and connected to a control device, the transmitter and the receiver are respectively extended and horizontally rotated in the up and down directions and installed at the right vertical edge position of the left door or the left vertical edge position of the right door, a row of transmitting heads facing the receiver is provided on the transmitter in the up and down directions, and a row of receiving heads facing the transmitter is provided on the receiver in the up and down directions respectively. A synchronizing device is provided between the transmitter and the receiver and the door frame, which drives the transmitter and the receiver to rotate synchronously when the left door and the right door are opened or closed, so that the transmitting heads on the transmitter and the receiving heads on the receiver are always facing each other left and right.

[0005] The technical advantages of this invention are as follows: it utilizes ultrasonic sensors and light curtain devices for non-contact detection, overcoming the drawback of existing electric double-hinged swing doors, which require resistance to reverse opening, thereby reducing the failure rate and risk. Its drive mechanism is not subject to frequent resistance, resulting in excessive current flow and a consequential impact on its service life. It is not susceptible to damage during use and does not require frequent maintenance, making it easier to maintain synchronization between the two doors. It also offers lower operating costs and greater energy efficiency. It prevents injuries to people or objects when closing the door, as well as collisions with people or objects outside when opening the door, making it safer and more user-friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a three-dimensional partial cross-sectional view of embodiment 1 of the present invention; Figure 2 This is a control principle diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of the top view of the structure of embodiment 2 of the present invention. DETAILED DESCRIPTION

[0007] Example 1, as Figure 1 、 Figure 2As shown, it includes a left door 1, a right door 2, a door frame 3, a driving device 4 and a control device 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 driving device 4 is installed on the door frame 3 and is connected to the left door 1 and the right door 2 respectively. The control device 5 is connected to the driving device 4, and the driving device 4 is controlled to drive the left door 1 and the right door 2 to cooperate and open and close synchronously. The left door 1 and the right door 2 are respectively provided with an ultrasonic sensor 6 connected to the control device 5 for detecting whether there is a foreign object near the door and transmitting the detected information to the control device 5. The left door 1 and the right door 2 are provided with a transmitter 71 and a receiver 72 and connected to the control device 5. The light curtain device 7 connected to the device 5, the emitter 71 and the receiver 72 are respectively extended and horizontally rotated along the up and down directions and installed at the right vertical edge position of the left door 1 or the left vertical edge position of the right door 2. A row of transmitting heads 73 facing the receiver 72 are provided on the emitter 71 in the up and down directions, and a row of receiving heads 74 facing the emitter 71 are correspondingly provided on the receiver 72 in the up and down directions. A synchronizing device 8 is provided between the emitter 71 and the receiver 72 and the door frame 3, which drives the emitter 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 transmitting heads 73 on the emitter 71 and the receiving heads 74 on the receiver 72 are always facing each other left and right.

[0008] The left and right doors 1 and 2 are each equipped with door shafts 12 that rotate downward and upward with the door frame 3, hingedly connecting them to the door frame 3. The upper door shaft 12 protrudes above the door frame 3. The drive device 4 is a reduction motor fixed to the door frame 3, with its output shaft axially connected downward to the upward-facing door shaft 12. The left and right doors 1 and 2 may be driven by the same reduction motor through a transmission device. The left and right doors 1 and 2 may be hinged to the door frame 3 via hinges.

[0009] Ultrasonic sensors 6 are respectively provided on both sides of the left door 1 and the right door 2. Two ultrasonic sensors 6 are respectively provided on the lower middle portion of both sides of the left door 1 and the right door 2, one on the left and one on the right.

[0010] The synchronizing device 8 consists of a dynamic synchronizing wheel 81, a fixed synchronizing wheel 82, and a synchronous belt 83. The dynamic synchronizing wheel 81 is mounted on the upper ends of the transmitter 71 and the receiver 72. The fixed synchronizing wheel 82 is fixedly mounted on the door frame 3 above the hinge axis between the left door 1 and the right door 2. The dynamic synchronizing wheel 81 and the fixed synchronizing 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 dynamic synchronizing wheel 81 and the fixed synchronizing wheel 82 on the right door 2 are connected by a synchronous belt 83 extending along the upper edge of the right door 2. When the left door 1 and the right door 2 are opened and closed synchronously, the synchronizing device 8 drives the transmitter 71 and the receiver 72 on the left door 1 and the right door 2 to rotate synchronously, so that the transmitting heads 73 on the transmitter 71 and the receiving heads 74 on the receiver 72 are always aligned with each other.

[0011] Grooves 10 for accommodating the dynamic synchronous wheel 81, the fixed synchronous wheel 82 and the synchronous belt 83 are respectively provided on the top surfaces of the left door 1 and the right door 2 along the extending direction of the top surfaces.

[0012] The dynamic synchronous wheel 81, the fixed synchronous wheel 82 and the synchronous belt 83 of the synchronization device 8 can also adopt sprockets and chains, or pulleys and belts (flat belts, V-belts, etc.), which can also achieve the synchronous control function.

[0013] The upper and lower ends of the transmitter 71 and the receiver 72 are respectively provided with rotating shafts that rotate with the left door 1 and the right door 2. The dynamic synchronous wheel 81 is fixedly mounted on the upper end of the rotating shaft of the transmitter 71 and the receiver 72. The fixed synchronous wheel 82 is fixedly mounted 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 at which the left door 1 and the right door 2 are hinged to the door frame 3 to ensure that the transmitter 71 and the receiver 72 of the light curtain device 7 move synchronously with the left door 1 and the right door 2.

[0014] Example 2, as Figure 3 As shown, the difference from Example 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 laterally fixedly connected to the upper ends 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 axis of the hinge 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 respectively hinged to the free ends of the movable short link 84 and the fixed short link 85 on the left door 1, and another long link 86 extends along the upper side of the right door 2, and its two ends are respectively hinged to the free ends of the movable short link 84 and the fixed short link 85 on the right door 2. When the left door 1 and the right door 2 are opened and closed synchronously, the movable 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, which 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 facing each other left and right.

[0015] Grooves 20 for accommodating the movable short link 84, the fixed short link 85 and the long link 86 are respectively provided on the top surfaces of the left door 1 and the right door 2 along the extending direction of the top surfaces.

[0016] Working principle: During normal use, when this electric double-hinged swing door is stationary, if the ultrasonic sensor 6 (radar) detects a person or object near the opening or closing direction of the left or right door 1 or 2, it will not control the opening or closing of the left or right door 1 or 2. During the opening or closing process, if the ultrasonic sensor 6 (radar) detects a person or object near the opening or closing direction of the left or right door 1 or 2, it will immediately stop the opening or closing of the left or right door 1 or 2. If the ultrasonic sensor 6 (radar) does not detect a foreign object near the opening or closing direction of the left or right door 1 or 2, it will control the normal synchronous opening or closing of the left or right door 1 or 2.

[0017] Under the action of the synchronization device 8, the transmitter heads 73 on the transmitter 71 located on the right vertical edge of the left door 1 (or the left vertical edge of the right door 2) are always aligned with the receiver heads 74 on the receiver 72 located on the left vertical edge of the right door 2 (or the right vertical edge of the left door 1). When the left and right doors 1 and 2 are open, if a person or object is between the right vertical edge of the left door 1 and the left vertical edge of the right door 2, this will block part of the light curtain signal transmitted by the transmitter heads 73 on the transmitter 71 to the receiver heads 74 on the receiver 72. The transmitter 71 and receiver 72 of the light curtain device 7 will then transmit this information to the control device 5, which will then not control the drive device 4 to close the left and right doors 1 and 2 to prevent people or objects from being trapped and to prevent additional resistance during closing. If no person or object is between the right vertical edge of the left door 1 and the left vertical edge of the right door 2 during closing, the control device 5 will control the drive device 4 to drive the left and right doors 1 and 2 to close normally and synchronously.

[0018] This electric double-opening swing door does not require the door to hit a person or object to be blocked before controlling the door to open or close. Instead, it uses the ultrasonic sensor 6 and the light curtain device 7 for non-contact detection, which greatly reduces the working current of the drive motor, is more energy-efficient, and can extend the service life of the drive motor and transmission device of the drive device 4.

Claims

1. A non-contact detection safety switch electric double-opening swing door, comprising a left door (1), a right door (2), a door frame (3), a driving 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 driving 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 driving device (4), and controls the driving 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 the right door (2) are respectively provided with an ultrasonic sensor (6) connected to the control device (5) for detecting whether there is a foreign object near the door and transmitting the detected information to the control device (5). The left door (1) and the right door (2) are respectively provided with a light curtain device (7) composed of a transmitter (71) and a receiver (72) and connected to the control device (5). The transmitter (71) and the receiver (72) are respectively extended and rotated horizontally in the up-down direction and installed at the right vertical edge position of the left door (1) or the left vertical edge position of the right door (2). The transmitter (71) ) is provided with a row of transmitting heads (73) facing the receiver (72) in the up-down direction, and a row of receiving heads (74) facing the transmitter (71) is provided on the receiver (72) in the up-down direction. A synchronizing 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 (71) to rotate synchronously when the left door (1) and the right door (2) are opened or closed, so that the transmitting heads (73) on the transmitter (71) and the receiving heads (74) on the receiver (72) are always facing each other left and right.

2. The non-contact detection safety switch electric double-opening swing door according to claim 1, characterized in that The left door (1) and the right door (2) are respectively provided with door shafts (12) that rotate downwardly and upwardly with the door frame (3) to hinge the left door (1) and the right door (2) on the door frame (3), the upper door shaft (12) protruding upward above the door frame (3), and the driving device (4) is fixed to the door frame (3), and the output shaft is axially connected to the door shaft (12) facing upward.

3. The non-contact detection safety switch electric double-opening swing door according to claim 1, characterized in that The left door (1) and the right door (2) are hinged to the door frame (3) via hinges.

4. The non-contact detection safety switch electric double-opening swing door according to claim 1, characterized in that Ultrasonic sensors (6) are respectively provided on both sides of the left door (1) and the right door (2).

5. The non-contact detection safety switch electric double-opening swing door according to claim 4, characterized in that Two ultrasonic sensors (6) are respectively provided at the lower middle positions on both sides of the left door (1) and the right door (2), one on the left and one on the right.

6. The non-contact detection safety switch electric double-opening swing door according to claim 1, characterized in that The synchronizing device (8) is composed of a dynamic synchronizing wheel (81), a fixed synchronizing wheel (82) and a synchronous belt (83). The dynamic synchronizing wheel (81) is mounted on the upper ends of the transmitter (71) and the receiver (72). The fixed synchronizing wheel (82) is located above the hinge axis of the left door (1) and the right door (2) and the door frame (3) and is fixedly mounted on the door frame (3). The dynamic synchronizing wheel (81) and the fixed synchronizing wheel (82) provided on the left door (1) are connected by a synchronous belt (83) extending along the upper edge of the left door (1). The dynamic synchronizing wheel (81) and the fixed synchronizing wheel (82) provided 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-opening swing door according to claim 6, characterized in that Grooves (10) for accommodating a dynamic synchronous wheel (81), a fixed synchronous wheel (82) and a synchronous belt (83) are respectively provided on the top surfaces of the left door (1) and the right door (2) along the extending direction of the top surfaces.

8. The non-contact detection safety switch electric double-opening swing door according to claim 6, characterized in that The upper and lower ends of the transmitter (71) and the receiver (72) are respectively provided with rotating shafts that rotate with the left door (1) and the right door (2). The dynamic synchronous wheel (81) is fixedly mounted on the upper end of the rotating shaft of the transmitter (71) and the receiver (72). The fixed synchronous wheel (82) is fixedly mounted on the door frame (3) and meshed with the synchronous belt (83). The axis of the fixed synchronous wheel (82) is concentric with the axis of the hinged connection between the left door (1) and the right door (2) and the door frame (3).

9. The non-contact detection safety switch electric double-opening swing door according to claim 1, characterized in 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 to the upper ends of the transmitter (71) and the receiver (72) in a transverse direction, one end of the fixed short link (85) is fixedly connected to the door frame (3) above the axis of the hinge connection 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 respectively hinged to the free ends of the movable short link (84) and the fixed short link (85) on the left door (1), and another long link (86) extends along the upper side of the right door (2), and its two ends are respectively hinged to the free ends of the movable short link (84) and the fixed short link (85) on the right door (2).

10. The non-contact detection safety switch electric double-opening swing door according to claim 9, characterized in that Two grooves (20) for accommodating a movable short connecting rod (84), a fixed short connecting rod (85) and a long connecting rod (86) are respectively provided on the top surfaces of the left door (1) and the right door (2) along the extending direction of the top surfaces.

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