Electronic limiting door opener with direction recognition function

Abstract

The utility model relates to the technical field of door opening devices, in particular to an electronic limiting door opener with a direction recognition function. The magnetic block is installed on the transmission shaft, the first metal detection sensor and the second metal detection sensor are arranged on the base, and the included angle between the positions, facing the transmission shaft, of the first metal detection sensor and the second metal detection sensor is smaller than 180 degrees. Therefore, the first metal detection sensor and the second metal detection sensor are used for acquiring the interval time and the sequence of the pulse signals triggered by the magnetic block and the number of the pulse signals to serve as a judgment basis for judging the moving direction and the moving distance of the door opener. Compared with the mode that in the prior art, induction devices need to be arranged at the two ends of the door respectively to trigger the door opener to stop, the structure has the advantages that the stop limiting position is accurate, installation is convenient, site limitation is avoided, and the phenomenon that the door opener is dead due to the fact that the door opener exceeds the movement limit continuously is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of door opening devices, in particular to an electronic limit door opener with direction recognition. Background Art

[0002] The chain-type door opener structure includes a casing, a base, a motor, a transmission shaft, and a transmission sprocket, wherein the motor is installed in the base, the transmission shaft is connected to the motor, the transmission shaft extends to the outside of the base, and the transmission sprocket is coaxially sleeved on the transmission shaft. The rotation of the motor drives the transmission shaft to rotate, and then drives the transmission sprocket to rotate. By setting a fixed chain, the chain and the transmission sprocket are coordinated, so that the sprocket drives the door opener to move along the extension direction of the chain when rotating; the existing door opener determines whether to stop at both ends by installing sensing elements at both ends of the door, and triggering a stop signal by approaching the two ends of the door during the movement of the door opener. This method requires a large installation space on site, takes a lot of time during installation and debugging, and is prone to errors during the installation process, resulting in the door not stopping when in place and being stuck over the head. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an electronic limit door opener with direction recognition, which has the advantages of easy installation, stable and accurate movement limit and no restriction on the site.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] An electronic limit door opener with direction recognition, comprising a door opener body, wherein the door opener body comprises a base, a motor, a transmission shaft, a transmission sprocket, a first metal detection sensor and a second metal detection sensor, a controller and a memory;

[0006] The motor is connected to the base, the transmission shaft is in transmission connection with the motor, the transmission shaft passes through the base and extends to the outside of the base, and the sprocket is coaxially sleeved on the transmission shaft;

[0007] The sprocket is located outside the base;

[0008] A magnetic block is installed on the circumferential surface of the transmission shaft;

[0009] The base is connected to a first metal detection sensor and a second metal detection sensor, wherein the sensing directions of the first metal detection sensor and the second metal detection sensor are both toward the axis of the transmission shaft, and the angle between the first metal detection sensor and the second metal detection sensor and the position toward the transmission shaft is less than 180 degrees;

[0010] When the transmission shaft rotates, the movement path of the magnetic block will trigger a pulse signal of the first metal detection sensor once, and trigger a pulse signal of the second metal detection sensor once;

[0011] The controller is electrically connected to the motor, the first metal detection sensor and the second metal detection sensor respectively, and is used to control the forward and reverse rotation of the motor according to the control program, and control the motor to stop rotating after receiving N pulse signals sensed by the first metal detection sensor and the second metal detection sensor; the memory is used to store the control program.

[0012] Furthermore, in the above-mentioned electronic limit door opener structure with direction recognition, the door opener body also includes a guide sprocket, and the two guide sprockets are rotatably connected to the two sides of the transmission sprocket respectively.

[0013] Furthermore, in the above-mentioned electronic limit door opener structure with direction recognition, the angle between the first metal detection sensor and the second metal detection sensor toward the transmission shaft is 80-135 degrees.

[0014] Furthermore, in the above-mentioned electronic limit door opener structure with direction recognition, a groove is provided on the circumferential surface of the transmission shaft, and the magnetic block is embedded in the groove.

[0015] Furthermore, the above-mentioned electronic limit door opener structure with direction recognition also includes a casing, and the casing cover is arranged on the upper part of the base.

[0016] The beneficial effect of the utility model is that in the electronic limit door opener structure with direction recognition involved in the utility model, a magnetic block is installed on the transmission shaft, and a first metal detection sensor and a second metal detection sensor are arranged on the base, and the angle between the first metal detection sensor and the second metal detection sensor toward the transmission shaft is less than 180 degrees, so that the first metal detection sensor and the second metal detection sensor are used to obtain the interval time and the sequence of pulse signals triggered by the magnetic block and the number of pulse signals, which are used as a basis for judging the moving direction and the moving distance of the door opener. Compared with the prior art method of requiring respectively arranging sensing devices at both ends of the door to trigger the door opener to stop, the structure involved in the present application has the advantages of accurate limit stop position, easy installation, no site restrictions, and avoiding the door opener from exceeding the moving limit and not stopping and over-head dead phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of an electronic limit door opener with direction recognition according to a specific implementation method of the utility model;

[0018] Figure 2 This is a structural schematic diagram of an electronic limit door opener with direction recognition connected to a sliding door and a chain in a specific implementation mode of the utility model;

[0019] Figure 3It is a schematic diagram of the principle of the pulse signal mechanism of an electronic limit door opener with direction recognition when opening the door in a specific implementation mode of the utility model;

[0020] Figure 4 It is a schematic diagram of the principle of the pulse signal mechanism of an electronic limit door opener with direction recognition when closing the door according to a specific implementation mode of the utility model;

[0021] Description of labels:

[0022] 1. Base;

[0023] 2. Transmission shaft; 21. Magnetic block;

[0024] 3. Transmission sprocket;

[0025] 4. The first metal detection sensor;

[0026] 5. Second metal detection sensor;

[0027] 6. Guide sprocket;

[0028] 7. Chain;

[0029] 8. Casing;

[0030] 9. Sliding door;

[0031] 10. Doorpost. DETAILED DESCRIPTION

[0032] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0033] Please refer to Figures 1 to 4 The specific implementation of the utility model relates to an electronic limit door opener with direction recognition, including a door opener body, the door opener body including a base 1, a motor, a transmission shaft 2, a transmission sprocket 3, a first metal detection sensor 4 and a second metal detection sensor 5, a controller and a memory;

[0034] The motor is connected to the base 1, the transmission shaft 2 is in transmission connection with the motor, the transmission shaft 2 passes through the base 1 and extends to the outside of the base 1, and the sprocket is coaxially sleeved on the transmission shaft 2;

[0035] The sprocket is located outside the base 1;

[0036] A magnetic block 21 is installed on the circumferential surface of the transmission shaft 2;

[0037] The base 1 is connected to a first metal detection sensor 4 and a second metal detection sensor 5, wherein the sensing directions of the first metal detection sensor 4 and the second metal detection sensor 5 are both toward the axis of the transmission shaft 2, and the angle between the first metal detection sensor 4 and the second metal detection sensor 5 toward the transmission shaft 2 is less than 180 degrees;

[0038] When the transmission shaft 2 rotates, the movement path of the magnetic block 21 will trigger a pulse signal of the first metal detection sensor 4 once, and trigger a pulse signal of the second metal detection sensor 5 once;

[0039] The controller is electrically connected to the first metal detection sensor 4 and the second metal detection sensor 5 respectively, and is used to control the forward and reverse rotation of the motor according to the control program, and control the motor to stop rotating after receiving N pulse signals sensed by the first metal detection sensor 4 and the second metal detection sensor 5; the memory is used to store the control program.

[0040] In the above implementation mode, it needs to be used in conjunction with a fixed chain 7, and the two ends of the chain 7 are respectively fixed on the door pillars 10 on both sides of the sliding door 9, and the chain 7 is connected to the transmission sprocket 3. Since the position of the chain 7 is fixed, when the sprocket rotates, the transmission cooperation of the chain 7 and the transmission sprocket 3 will cause the door opener body to move linearly along the extension direction of the chain 7 (forward or reverse), so that the sliding door 9 connected to the door opener body can be moved in the horizontal direction, thereby realizing the opening and closing actions of the sliding door 9.

[0041] When setting the control program, it is first necessary to measure the distance S1 that the door opener body needs to move during the opening and closing process of the sliding door 9. Since the circumference of the transmission sprocket 3 is a known number S2, the number of revolutions N = S1 / S2 of the transmission shaft 2 required for the door opener body to move the distance S1 can be calculated; since the first metal detection sensor 4 and the second metal detection sensor 5 will undergo a signal conversion every time the transmission shaft 2 rotates one circle, the moving distance of the door opener can be determined by the number of pulse signals obtained by the first metal detector and the second metal detector, that is, based on the measured S1, it can be calculated that the first metal detection sensor 4 and the second metal detection sensor 5 need to obtain N corresponding pulse signals when the door opener completes the process of opening or closing the door. Therefore, it is sufficient to write in the control program that when the motor is turned on, the first metal detection sensor 4 and the second metal detection sensor 5 need to obtain N corresponding pulse signals to control the motor to stop.

[0042] On the other hand, since the angle between the first metal detection sensor 4 and the second metal detection sensor 5 toward the transmission shaft 2 is less than 180 degrees, when controlling the door opening or closing, that is, controlling the motor to rotate forward or reverse, the sequence of the first metal detection sensor 4 and the second metal detection sensor 5 is different.

[0043] Taking the angle between the first metal detection sensor 4 and the second metal detection sensor 5 facing the transmission shaft 2 as 90 degrees as an example, when the control motor rotates forward, the magnetic block 21 will first trigger the first metal detection sensor 4 to generate a pulse signal A1, and then after a time T1, the magnetic block 21 will trigger the second metal detection sensor 5 to generate a pulse signal A2, and then after 3 times T1, the magnetic block 21 will trigger the first metal detection sensor 4 to generate a pulse signal A1 again, and after another time T1, the magnetic block 21 will trigger the second metal detection sensor 5 to generate a pulse signal A2 again...

[0044] When the control motor is reversed, the magnetic block 21 will first trigger the second metal detection sensor 5 to generate a pulse signal A2, and then after a time T1, the magnetic block 21 will trigger the first metal detection sensor 4 to generate a pulse signal A1, and then after 3 times T1, the magnetic block 21 will trigger the second metal detection sensor 5 again to generate a pulse signal A2, and after another time T1, the magnetic block 21 will trigger the first metal detection sensor 4 again to generate a pulse signal A1...

[0045] Therefore, the above rules can be used to make real-time judgments on the forward and reverse rotation of the motor by determining the order of obtaining pulse signals A1 and A2 at intervals of T1. For example, when controlling the motor to rotate forward to control the door opening, if an error occurs in the control program causing the motor to reverse, an error can be reported through the above judgment to avoid the problem of the door opener moving too far and getting stuck at the extreme position of the closed door.

[0046] Specifically, when the control motor rotates forward, the magnetic block 21 will first trigger the first metal detection sensor 4 to generate a pulse signal A1, and then after a time T1, the magnetic block 21 will trigger the second metal detection sensor 5 to generate a pulse signal A2, and then after a time T2, the magnetic block 21 will trigger the first metal detection sensor 4 again to generate a pulse signal A1; at this time, if T2 is greater than T1, the control motor continues to rotate, and if T2 is less than T1, the control motor stops rotating.

[0047] Reference Figure 3 When executing the door opening program, the transmission sprocket 3 needs to rotate clockwise. When the signal A1 is triggered, the signal A2 is triggered after time T1, and then the signal A1 is triggered again after time T2. If the transmission sprocket 3 rotates clockwise (correct direction), T2 is greater than T1, and the door opener can continue to move in the correct door opening direction. If T2 is less than T1, it means that the rotation direction of the transmission sprocket 3 is wrong, and it is rotating counterclockwise. At this time, it can be judged that the program is wrong and the door opener can be controlled to stop moving in time.

[0048] In this embodiment, when the control motor is reversed, the magnetic block 21 will first trigger the second metal detection sensor 5 to generate a pulse signal A2, and then after a time T1, the magnetic block 21 will trigger the first metal detection sensor 4 to generate a pulse signal A1, and then after a time T2, the magnetic block 21 will again trigger the second metal detection sensor 5 to generate a pulse signal A2; at this time, if T2 is greater than T1, the control motor continues to rotate, and if T2 is less than T1, the control motor stops rotating.

[0049] Reference Figure 4 When executing the door closing procedure, the transmission sprocket 3 needs to rotate counterclockwise. When the signal A2 is triggered, the signal A1 is triggered after time T1, and then the signal A2 is triggered again after time T2. If the transmission sprocket 3 rotates counterclockwise (correct direction), T2 is greater than T1, and the door opener can continue to move in the correct closing direction. If T2 is less than T1, it means that the rotation direction of the transmission sprocket 3 is wrong and it is rotating in the clockwise direction. At this time, it can be judged that the program is wrong and the door opener can be controlled to stop moving in time.

[0050] As a preferred embodiment, the door opener body further includes a guide sprocket 6 , and the two guide sprockets 6 are rotatably connected to the two sides of the transmission sprocket 3 .

[0051] Reference Figure 1 The guide sprocket 6 can increase the contact area between the transmission sprocket 3 and the chain 7, thereby improving the stability of the door opener movement.

[0052] As a preferred embodiment, the angle between the first metal detection sensor 4 and the second metal detection sensor 5 facing the transmission shaft 2 is 80-135 degrees.

[0053] As a preferred embodiment, a groove is formed on the circumferential surface of the transmission shaft 2, and the magnetic block 21 is embedded in the groove. This structure can minimize the problem of excessive deviation of the transmission shaft 2 from the axis due to the installation of the magnetic block 21, and improve the stability of the door opener when moving.

[0054] As a preferred embodiment, it also includes a casing 8 , which is covered on the upper part of the base 1 to protect the motor and other components inside the base 1 .

[0055] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. An electronic limit door opener with direction recognition, characterized in that: It includes a door opener body, which includes a base, a motor, a transmission shaft, a transmission sprocket, a first metal detection sensor and a second metal detection sensor, a controller and a memory; The motor is connected to the base, the transmission shaft is in transmission connection with the motor, the transmission shaft passes through the base and extends to the outside of the base, and the sprocket is coaxially sleeved on the transmission shaft; The sprocket is located outside the base; A magnetic block is installed on the circumferential surface of the transmission shaft; The base is connected to a first metal detection sensor and a second metal detection sensor, wherein the sensing directions of the first metal detection sensor and the second metal detection sensor are both toward the axis of the transmission shaft, and the angle between the first metal detection sensor and the second metal detection sensor and the position toward the transmission shaft is less than 180 degrees; When the transmission shaft rotates, the movement path of the magnetic block will trigger a pulse signal of the first metal detection sensor once, and trigger a pulse signal of the second metal detection sensor once; The controller is electrically connected to the motor, the first metal detection sensor and the second metal detection sensor respectively, and is used to control the forward and reverse rotation of the motor according to the control program, and control the motor to stop rotating after receiving N pulse signals sensed by the first metal detection sensor and the second metal detection sensor; the memory is used to store the control program.

2. The electronic limit door opener with direction recognition according to claim 1, characterized in that: The door opener body also includes a guide sprocket, and the two guide sprockets are rotatably connected to the two sides of the transmission sprocket respectively.

3. The electronic limit door opener with direction recognition according to claim 1, characterized in that: The included angle between the first metal detection sensor and the second metal detection sensor toward the transmission shaft is 80-135 degrees.

4. The electronic limit door opener with direction recognition according to claim 1, characterized in that: A groove is formed on the circumferential surface of the transmission shaft, and the magnetic block is embedded in the groove.

5. The electronic limit door opener with direction recognition according to claim 1, characterized in that: The utility model also comprises a casing, wherein the casing cover is arranged on the upper part of the base.

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