A multi-stage gear sensing device for a door opener

Abstract

This utility model discloses a multi-stage gear sensing device for a door opener, including a servo drive mechanism mounted on a base housing. The servo drive mechanism includes a servo motor. A panel is provided on one side of the base housing, and a multi-stage gear mechanism is provided on the panel and driven by the servo motor. A detection box connected to the base housing is provided above the servo drive mechanism. A worm gear is mounted in the detection box via a rotating shaft. The bottom of the worm gear meshes with a worm gear driven by the multi-stage gear mechanism. A detection mechanism for detecting the rotation angle of the rotating shaft is provided in the detection box, and a cover plate is connected to the detection box. In this utility model, by setting up a base housing, a servo drive mechanism, a multi-stage gear mechanism, a worm gear, a worm gear, and a detection mechanism, the closed-loop control response speed is improved compared to the prior art, thereby accelerating the action response speed.

Description

Technical Field

[0001] This utility model relates to the field of household door opener technology, and in particular to a multi-stage gear sensing device for door openers. Background Technology

[0002] A door opener is an electromechanical integrated device that automatically opens and closes a door via a motor, widely used in courtyards, garages, industrial plants, and other similar settings. An existing patent (publication number: CN221546721U) discloses a door opener for sliding doors. This invention employs a skirted worm gear, increasing the meshing surface between the first worm and the worm wheel teeth, thereby increasing the load capacity of the skirted worm gear. However, in practical applications, while this invention increases the load, the overall size of the door opener also increases significantly. Therefore, we propose a multi-stage gear sensing device for door openers. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a multi-stage gear sensing device for a door opener.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A multi-stage gear sensing device for a door opener is designed, comprising a servo drive mechanism mounted on a base housing, the servo drive mechanism including a servo motor, a panel on one side of the base housing, a multi-stage gear mechanism on the panel that is driven and connected to the servo motor, a detection box connected to the base housing above the servo drive mechanism, a worm gear mounted inside the detection box via a rotating shaft, a worm gear meshing with the bottom of the worm gear and driven and connected to the multi-stage gear mechanism, a detection mechanism for detecting the rotation angle of the rotating shaft inside the detection box, and a cover plate connected to the detection box.

[0006] In the above scheme, the multi-stage gear mechanism includes a drive shaft rotatably mounted on the panel, a gear one and a gear two spaced apart on the drive shaft, a double-layer gear mounted on the panel meshing at the top of the gear two, and a gear three meshing with the other end of the double-layer gear at the end of the worm gear.

[0007] In the above scheme, a protective cover is connected to the panel and placed on the outside of the double-layer gear and the second gear.

[0008] In the above scheme, the detection mechanism includes a magnetic ring installed at the end of the rotating shaft, and a magnetoresistive sensor opposite to the center of the magnetic ring is installed inside the cover plate.

[0009] In the above scheme, the detection mechanism includes a detection shaft that is rotatably mounted to the cover plate at one end, and the other end of the detection shaft is coaxially connected to the rotating shaft. A code disk is coaxially connected to the detection shaft, and a detection bracket is connected to the cover plate. LED light sources and photosensitive elements connected to the detection bracket are respectively provided on both sides of the code disk.

[0010] In the above scheme, a torque sensor is installed on the drive shaft.

[0011] In the above scheme, the servo motor is connected to a power line, and a Hall current sensor is connected to the power line.

[0012] The advantages and beneficial effects of this utility model are as follows: By setting up a base housing, a servo drive mechanism, a multi-stage gear mechanism, a worm gear, a worm shaft, and a detection mechanism, the servo drive mechanism drives the multi-stage gear mechanism, which in turn transmits the worm shaft, causing the worm gear and the rotating shaft to rotate. At the same time, the detection mechanism detects the rotation angle of the rotating shaft. Compared with the prior art, the multi-stage gear mechanism connects the output end and the rotating shaft. By detecting the rotation angle of the rotating shaft in real time, and then indirectly obtaining the rotation angle of the output end through the transmission ratio between the rotating shaft and the multi-stage gear mechanism, the current working status of the door opener is fed back, improving the closed-loop control response speed and thus accelerating the action response speed. By setting up a panel, gear one, a drive shaft, gear two, gear three, a double-layer gear, and a protective cover, the drive shaft connected to the servo motor drives gear one and gear two, which in turn causes the double-layer gear to drive gear three. Compared with the prior art, the multi-stage gear mechanism can be installed in the small space between the panel and the protective cover, making the structure of this utility model more compact, improving space utilization, and better meeting the conditions of home use. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a multi-stage gear sensing device for a door opener proposed in this utility model;

[0015] Figure 2 An exploded view of the first embodiment of a multi-stage gear sensing device for a door opener proposed in this utility model;

[0016] Figure 3 This is a schematic diagram of the cover plate in the first scenario of a multi-stage gear sensing device for a door opener proposed in this utility model.

[0017] Figure 4 This is a schematic diagram of the cover plate in the second scenario of a multi-stage gear sensing device for a door opener proposed in this utility model.

[0018] In the diagram: 1. Base housing; 2. Servo drive mechanism; 3. Drive shaft; 4. Gear 1; 5. Double-layer gear; 6. Detection box; 7. Worm gear; 8. Gear 3; 9. Worm wheel; 10. Cover plate; 11. Torque sensor; 12. Power cord; 13. Hall current sensor; 14. Panel; 15. Protective cover; 16. Rotating shaft; 17. Magnetic ring; 18. Magnetoresistive sensor; 19. Detection shaft; 20. Encoder disk; 21. Detection bracket; 22. LED light source; 23. Photosensitive element; 24. Gear 2. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a multi-stage gear sensing device for a door opener, including a servo drive mechanism 2 set on a base housing 1, the servo drive mechanism 2 including a servo motor, a panel 14 integrally formed on one side of the base housing 1, a multi-stage gear mechanism connected to the servo motor on the panel 14, a detection box 6 connected to the base housing 1 above the servo drive mechanism 2, the detection box 6 being connected to the base housing 1 by fasteners, making the detection box 6 and its internal structure modular and easy to replace, a worm gear 9 is installed inside the detection box 6 through a rotating shaft 16, the rotating shaft 16 being rotatably connected to the inner wall of the detection box 6, and a worm 7 connected to the multi-stage gear mechanism being meshed at the bottom of the worm gear 9;

[0021] Furthermore, the multi-stage gear mechanism includes a drive shaft 3 rotatably mounted on the panel 14. Gear 1 4 and gear 2 24, spaced apart, are mounted on the drive shaft 3. Gear 1 4 serves as the output end of the entire door opener, connecting to the door body or swing arm via gear 1 4. A double-layer gear 5 mounted on the panel 14 meshes with the top of gear 2 24. The double-layer gear 5 has gear rings of different diameters at both ends. A gear 3 8, meshing with the other end of the double-layer gear 5, is mounted at the end of the worm gear 7. Figure 2 As shown, the overall diameter of each gear in the multi-stage gear mechanism gradually decreases from bottom to top, causing the rotational speed to gradually increase from bottom to top, thereby accelerating the rotational speed of the shaft 16.

[0022] Furthermore, a protective cover 15 is connected to the panel 14 and is provided on the outside of the double-layer gear 5 and the second gear 24. The protective cover 15 provides a certain dust protection for the multi-stage gear mechanism. In addition, a sound-absorbing layer is covered on the inner wall of the protective cover 15 to reduce the noise of the multi-stage gear mechanism.

[0023] Specifically, by setting up a panel 14, gear 4, drive shaft 3, gear 24, gear 3, double-layer gear 5, and protective cover 15, the drive shaft 3, which is connected to the servo motor, drives gear 4 and gear 24, thereby causing the double-layer gear 5 to drive gear 3 8. Compared with the prior art, the installation of a multi-stage gear mechanism can be completed in the narrow space between the panel 14 and the protective cover 15, making the structure of this utility model more compact, improving space utilization, better meeting the conditions of home use, and more suitable for the home environment.

[0024] The detection box 6 is equipped with a detection mechanism for detecting the rotation angle of the rotating shaft 16, and the detection box 6 is connected to a cover plate 10.

[0025] Furthermore, in Embodiment 1: the detection mechanism includes a magnetic ring 17 installed at the end of the rotating shaft 16, a magnetoresistive sensor 18 opposite to the center of the magnetic ring 17 installed inside the cover plate 10, and a signal processing module 1 connected to the magnetoresistive sensor 18, which is disposed inside the cover plate 10, such as... Figure 3 As shown, the signal processing module is located above the magnetoresistive sensor 18 and outputs an orthogonal sinusoidal signal. The rotation angle of the rotating shaft 16 is indirectly obtained by using the orthogonal sinusoidal signal.

[0026] Furthermore, in Embodiment 2: the detection mechanism includes a detection shaft 19 rotatably mounted to the cover plate 10 at one end, and a coaxial connection between the other end of the detection shaft 19 and the rotating shaft 16. A code disk 20 is coaxially connected to the detection shaft 19, and a detection bracket 21 is connected to the cover plate 10. LED light sources 22 and photosensitive elements 23, connected to the detection bracket 21, are respectively provided on both sides of the code disk 20. In addition, a signal processing module 2 is also provided inside the cover plate 10, such as... Figure 4 As shown, the signal processing module 2 is located above the code disk 20. When the rotating shaft 16 rotates, it drives the code disk 20 to move. The signal processing module 2 outputs a differential signal through optical pulse modulation and photoelectric conversion, thereby obtaining the angle of the rotating shaft 16.

[0027] Specifically, by setting up a base housing 1, a servo drive mechanism 2, a multi-stage gear mechanism, a worm gear 9, a worm 7, and a detection mechanism, the servo drive mechanism 2 drives the multi-stage gear mechanism, which in turn transmits the worm 7, causing the worm gear 9 and the rotating shaft 16 to rotate. At the same time, the detection mechanism detects the rotation angle of the rotating shaft 16. Compared with the existing technology, by using a multi-stage gear mechanism to connect the output end and the rotating shaft 16, and by detecting the rotation angle of the rotating shaft in real time, and then indirectly obtaining the rotation angle of the output end through the transmission ratio between the rotating shaft 16 and the multi-stage gear mechanism, the current working status of the door opener is fed back, improving the closed-loop control response speed and thus accelerating the action response speed.

[0028] Furthermore, a torque sensor 11 is installed on the drive shaft 3; the torque sensor 11 is used to detect the torque of the drive shaft 3, thereby monitoring the fluctuation of the drive torque in real time.

[0029] Furthermore, the servo motor is connected to a power cable 12, and a Hall current sensor 13 is connected to the power cable 12. The Hall current sensor 13 is used to detect the peak current, thereby indirectly calculating the output torque. The torque sensor 11 and the Hall current sensor 13 need to form a dual-channel verification. When the torque suddenly exceeds the threshold and the current is abnormal, emergency braking is triggered.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage gear induction device for a door opener, comprising a servo drive mechanism (2) provided on a base housing (1), characterized in that, The servo drive mechanism (2) includes a servo motor. A panel (14) is provided on one side of the base housing (1). A multi-stage gear mechanism that is connected to the servo motor is provided on the panel (14). A detection box (6) connected to the base housing (1) is provided above the servo drive mechanism (2). A worm gear (9) is installed in the detection box (6) through a rotating shaft (16). A worm (7) that is connected to the multi-stage gear mechanism is meshed at the bottom of the worm gear (9). A detection mechanism for detecting the rotation angle of the rotating shaft (16) is provided in the detection box (6). A cover plate (10) is connected to the detection box (6).

2. A multi-stage gear sensing device for a door opener as defined in claim 1, wherein The multi-stage gear mechanism includes a drive shaft (3) rotatably mounted on a panel (14), on which a gear 1 (4) and a gear 2 (24) are mounted at intervals. The top of the gear 2 (24) is meshed with a double-layer gear (5) mounted on the panel (14), and the end of the worm (7) is fitted with a gear 3 (8) that meshes with the other end of the double-layer gear (5).

3. A multi-stage gear sensing device for a door opener according to claim 2, characterized in that, The panel (14) is connected to a protective cover (15) that covers the outside of the double-layer gear (5) and the second gear (24).

4. A multi-stage gear sensing device for a door opener as defined in claim 1, wherein The detection mechanism includes a magnetic ring (17) installed at the end of the rotating shaft (16), and a magnetoresistive sensor (18) opposite to the center of the magnetic ring (17) is installed inside the cover plate (10).

5. A multi-stage gear sensing device for a door opener as defined in claim 1, wherein, The detection mechanism includes a detection shaft (19) that is rotatably mounted on a cover plate (10) at one end, and a rotating shaft (16) that is coaxially connected to the other end of the detection shaft (19). A code disk (20) is coaxially connected to the detection shaft (19), and a detection bracket (21) is connected to the cover plate (10). LED light sources (22) and photosensitive elements (23) that are connected to the detection bracket (21) are respectively provided on both sides of the code disk (20).

6. A multi-stage gear sensing device for a door opener as defined in claim 2, wherein A torque sensor (11) is installed on the drive shaft (3).

7. A multi-stage gear sensing device for a door opener as defined in claim 1, wherein The servo motor is connected to a power line (12), and a Hall current sensor (13) is connected to the power line (12).

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