An electrically powered automatic door

By designing the components of the electric automatic door, the problems of jamming and abnormal noise caused by loose timing belts have been solved, enabling convenient maintenance and stable operation, and enhancing safety and durability.

CN224549911UActive Publication Date: 2026-07-24FOSHAN YUEN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FOSHAN YUEN TECH CO LTD
Filing Date
2025-09-02
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The timing belts of existing electric automatic doors are prone to loosening during long-term use, causing the door to jam and make abnormal noises when opening and closing. Furthermore, the maintenance process is cumbersome and may damage other components.

Method used

An automatic door assembly was designed, comprising a motor, coupling, main wheel, carriage, fixing block, timing belt, guide rod, and mounting bracket. The carriage is adjusted by a screw to drive the driven wheel, thereby achieving rapid tensioning of the timing belt. At the same time, an alarm component is set to provide real-time feedback on the door's position and prevent hard collisions.

Benefits of technology

It enables convenient tension adjustment of the synchronous belt, ensuring stable transmission, preventing door deviation, improving safety and durability, and protecting the integrity of the door structure by preventing hard collisions through alarm components.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to automatic door technical field discloses a kind of electric automatic door, including door frame structure, power supply, automatic door assembly and alarm component, power supply, automatic door assembly and alarm component are respectively installed on door frame structure, automatic door assembly includes motor, coupling, main wheel, sliding support, fixed block, synchronous belt, guide rod and mounting bracket, motor shaft is installed main wheel by coupling, fixed block is installed sliding support by screw rod, the bottom rotation installation from wheel of sliding support, from wheel is connected by synchronous belt and main wheel transmission, mounting bracket is movably arranged on guide rod by guide wheel, and door frame and positioning block are respectively fixedly installed on the side of mounting bracket away from guide wheel, and positioning block is fixedly installed on synchronous belt. The utility model is driven from wheel accurate movement by the automatic door assembly of setting, synchronous belt tensioning adjustment is quickly realized, the convenience of maintenance is guaranteed, and the best tension state of recovery synchronous belt is guaranteed.
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Description

Technical Field

[0001] This utility model relates to the field of automatic door technology, and in particular to an electric automatic door. Background Technology

[0002] Electric automatic doors are widely used in public places such as shopping malls, office buildings, and hospitals. They are mainly composed of a door body, a drive mechanism, a control system, and a sensing device. By sensing the approach of a human or object, the drive motor drives the door body to open or close, realizing contactless passage. These automatic doors have the characteristics of rapid opening and closing, convenient passage, energy saving and noise reduction, which can effectively improve passage efficiency and user experience, and have become one of the important entrance and exit forms in modern buildings.

[0003] In existing technologies, the timing belt is prone to loosening during transmission due to long-term use, which can cause jamming and abnormal noise when the door is opened and closed, or even cause deviation in door movement due to unstable transmission, affecting the user experience. It is necessary to disassemble a large number of parts to adjust the position of the driven pulley to tighten the timing belt, which is not only cumbersome and time-consuming to maintain, but may also damage other transmission components due to improper operation during disassembly and assembly. Utility Model Content

[0004] Given that the synchronous belt in the existing transmission process is prone to loosening due to long-term use, which can cause jamming and abnormal noise when the door is opened and closed, or even cause deviation in door movement due to unstable transmission, affecting the user experience, and that it is necessary to disassemble a large number of parts to adjust the position of the driven pulley to tighten the synchronous belt, which is not only cumbersome and time-consuming to maintain, but may also damage other transmission components due to improper operation during disassembly and assembly, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an electric automatic door, including a door frame structure, a power supply, an automatic door assembly, and an alarm assembly. The power supply, automatic door assembly, and alarm assembly are respectively installed on the door frame structure. The automatic door assembly includes a motor, a coupling, a main wheel, a carriage, a fixing block, a timing belt, a guide rod, and a mounting bracket. The motor shaft of the motor is mounted on the main wheel through the coupling. The carriage is mounted on the fixing block through a screw. A driven wheel is rotatably mounted on the bottom of the carriage. The driven wheel is connected to the main wheel through a timing belt. The mounting bracket is movably mounted on the guide rod through a guide wheel. A door frame and a positioning block are respectively fixedly mounted on the side of the mounting bracket away from the guide wheel. The positioning block is fixedly mounted on the timing belt.

[0006] As a preferred embodiment of the electric automatic door of this utility model, the door frame structure includes a door head and side panels, the side panels are configured as a pair and are respectively fixedly installed on both sides of the bottom end of the door head.

[0007] In a preferred embodiment of the electric automatic door of this utility model, the motor is fixedly installed inside the door head and is connected to a power source via wires.

[0008] In a preferred embodiment of the electric automatic door of this utility model, the sliding bracket is slidably disposed inside the door head, and the fixing block is fixedly installed on the top of the inside of the door head.

[0009] In a preferred embodiment of the electric automatic door of this utility model, the screw is rotatably mounted on the fixed block, the screw passes through the slide, and the screw and the slide are threadedly connected.

[0010] As a preferred embodiment of the electric automatic door of this utility model, the guide rod is fixedly installed inside the door head and on one side of the synchronous belt, the number of mounting brackets is two, and the guide wheel is rotatably installed on one side of the mounting bracket.

[0011] In a preferred embodiment of the electric automatic door of this utility model, one of the positioning blocks is fixedly installed at the upper end of the synchronous belt, and the other is fixedly installed at the lower end of the synchronous belt; the door body is fixedly installed at the bottom end of the door frame.

[0012] In a preferred embodiment of the electric automatic door of this utility model, the alarm assembly includes a fixed cylinder, a spring, a slider, and a buzzer. The fixed cylinder is fixedly installed inside the side plate, and the surface of the fixed cylinder is flush with the surface of the side plate. A trigger block is fixedly installed inside the fixed cylinder.

[0013] In a preferred embodiment of the electric automatic door of this utility model, one end of the spring is fixedly installed on the inner wall of the fixed cylinder, and the other end is fixedly installed on the slider, which is slidably connected to the inner wall of the fixed cylinder.

[0014] In a preferred embodiment of the electric automatic door of this utility model, a contact block is fixedly installed at one end of the slider near the trigger block, and the buzzer is fixedly installed on the door head.

[0015] The beneficial effects of this utility model are: 1. The automatic door assembly is designed to achieve linkage control of the two doors through synchronous belt drive, making the opening and closing action smooth and efficient. When the synchronous belt becomes loose due to long-term use, simply turn the screw with a tool to drive the carriage to move the driven wheel precisely, quickly adjusting the tension of the synchronous belt. This ensures convenient maintenance and can restore the synchronous belt to its optimal tension state in a timely manner, effectively extending the service life of the transmission components and ensuring the long-term stable operation of the automatic door. 2. With the alarm component in place, when the door moves to the sides and approaches the side panel, the side wall of the door will press the slider and compress the spring. The contact block and the trigger block will make contact to connect the circuit, and the buzzer will immediately sound an alarm. It can provide real-time feedback on the position of the door, effectively avoiding hard collisions between the door and the side panel due to excessive movement, protecting the structural integrity of the door and the side panel, and timely alarm to remind the user or system to adjust the door's operating status, thus improving the safety and durability of the automatic door. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the interior of the entrance of this utility model; Figure 3 This is a schematic diagram of the automatic door assembly of this utility model; Figure 4 This is a schematic diagram of the automatic door assembly of this utility model; Figure 5 This is a schematic diagram of the installation of the positioning block of this utility model; Figure 6 This is a schematic diagram of the installation of the driven wheel of this utility model; Figure 7 This is a schematic diagram of the alarm component of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Door frame structure; 11. Door head; 12. Side panel; 2. Power supply; 3. Automatic door assembly; 301. Motor; 302. Coupling; 303. Main wheel; 304. Carriage; 305. Driven wheel; 306. Fixing block; 307. Screw; 308. Synchronous belt; 309. Guide rod; 310. Mounting bracket; 311. Guide wheel; 312. Door frame; 313. Positioning block; 4. Alarm assembly; 41. Fixing cylinder; 42. Trigger block; 43. Spring; 44. Slider; 45. Contact block; 46. Buzzer. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Example 1: Refer to attached figure Figure 1 - Appendix Figure 6 The first embodiment of this utility model provides an electric automatic door, including a door frame structure 1, a power supply 2, an automatic door assembly 3, and an alarm assembly 4. The power supply 2, the automatic door assembly 3, and the alarm assembly 4 are respectively installed on the door frame structure 1. The door frame structure 1 includes a door head 11 and side panels 12. The side panels 12 are configured as a pair and are respectively fixedly installed on both sides of the bottom end of the door head 11. The inside of the door head 11 is configured as a cavity.

[0020] The power supply 2 is fixedly installed inside the door frame 11. The automatic door assembly 3 includes a motor 301, a coupling 302, a main wheel 303, a carriage 304, a fixing block 306, a timing belt 308, a guide rod 309, and a mounting bracket 310. The motor 301 is fixedly installed inside the door frame 11 and is connected to the power supply 2 via wires. The motor shaft of the motor 301 is mounted on the main wheel 303 via the coupling 302. The carriage 304 is slidably disposed inside the door frame 11, and a driven wheel 305 is rotatably mounted on the bottom of the carriage 304. The driven wheel 305 is connected to the main wheel 303 via the timing belt 308. The fixing block 306 is fixedly installed at the top inside the door frame 11, and the rotating part of the fixing block 306... A screw 307 is installed, which passes through the slide 304 and is threadedly connected to the slide 304. A guide rod 309 is fixedly installed inside the door head 11 and on one side of the synchronous belt 308. There are two mounting brackets 310 inside the door head 11. A guide wheel 311 is rotatably installed on one side of the mounting bracket 310. The guide wheel 311 is movably mounted on the guide rod 309. A door frame 312 and a positioning block 313 are fixedly installed on the side of the mounting bracket 310 away from the guide wheel 311. One positioning block 313 is fixedly installed on the upper end of the synchronous belt 308, and the other is fixedly installed on the lower end of the synchronous belt 308. A door body is fixedly installed at the bottom end of the door frame 312. The door body is not shown in the drawing.

[0021] During use, power supply 2 supplies power to motor 301, starting motor 301. The motor shaft of motor 301 drives the main wheel 303 to rotate through coupling 302. The main wheel 303 drives the driven wheel 305 to rotate through synchronous belt 308. The rotation of synchronous belt 308 drives the positioning block 313 to move. Since one positioning block 313 is above synchronous belt 308 and the other is below synchronous belt 308, the positioning blocks 313 move in opposite directions. The positioning blocks 313 drive the mounting bracket 310 to move. The mounting bracket 310 rolls on guide rod 309 through guide wheel 311. The mounting bracket 310 drives the door body to move through door frame 312, thereby realizing the opening or closing of the automatic door. After long-term use, synchronous belt 308 may loosen. At this time, a tool drives screw 307 to rotate. Screw 307 controls slide 304 to slide inside door head 11. Slide 304 drives driven wheel 305 to move, thereby tensioning synchronous belt 308.

[0022] Example 2: Refer to attached figure Figure 1 and attached Figure 7 This is the second embodiment of the present invention, which differs from the first embodiment in that: The alarm assembly 4 includes a fixed cylinder 41, a spring 43, a slider 44, and a buzzer 46. The fixed cylinder 41 is fixedly installed inside the side plate 12, and the surface of the fixed cylinder 41 is flush with the surface of the side plate 12. A trigger block 42 is fixedly installed inside the fixed cylinder 41. One end of the spring 43 is fixedly installed on the inner wall of the fixed cylinder 41, and the other end is fixedly installed on the slider 44. The slider 44 is slidably connected to the inner wall of the fixed cylinder 41. A contact block 45 is fixedly installed on the end of the slider 44 near the trigger block 42. The buzzer 46 is fixedly installed on the door head 11. One end of the trigger block 42 is connected to the positive terminal of the power supply 2, and the other end is connected to the positive terminal of the buzzer 46. The negative terminal of the buzzer 46 is connected to the negative terminal of the power supply 2. When the trigger block 42 is triggered and closed, the current passes through the buzzer 46 to form a circuit, and the buzzer 46 immediately emits a buzzing sound.

[0023] During use, when the door moves to both sides, the side wall of the door will press the slider 44 and compress the spring 43. When the slider 44 and the fixed cylinder 41 are flush, the contact block 45 and the trigger block 42 come into contact. When the contact block 45 presses down on the trigger block 42, the metal contacts in the trigger block 42 close, forming a circuit path, thereby causing the buzzer 46 to sound an alarm, realizing alarm control of the closed state of the door.

[0024] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An electric automatic door, characterized in that: The system includes a door frame structure (1), a power supply (2), an automatic door assembly (3), and an alarm assembly (4). The power supply (2), automatic door assembly (3), and alarm assembly (4) are respectively mounted on the door frame structure (1). The automatic door assembly (3) includes a motor (301), a coupling (302), a main wheel (303), a carriage (304), a fixing block (306), a timing belt (308), a guide rod (309), and a mounting bracket (310). The motor shaft of the motor (301) is mounted on the main wheel (303) via the coupling (302). The fixed block (306) is mounted on the slide (304) via the screw (307). The bottom of the slide (304) is rotatably mounted on the driven wheel (305). The driven wheel (305) is connected to the main wheel (303) via the synchronous belt (308). The mounting bracket (310) is movably mounted on the guide rod (309) via the guide wheel (311). The gantry (312) and the positioning block (313) are fixedly mounted on the side of the mounting bracket (310) away from the guide wheel (311). The positioning block (313) is fixedly mounted on the synchronous belt (308).

2. The electric automatic door according to claim 1, characterized in that: The door frame structure (1) includes a door head (11) and side panels (12), the side panels (12) are configured as a pair and are respectively fixedly installed on both sides of the bottom end of the door head (11).

3. The electric automatic door according to claim 1, characterized in that: The motor (301) is fixedly installed inside the door head (11), and the motor (301) is connected to the power supply (2) via wires.

4. The electric automatic door according to claim 3, characterized in that: The slide (304) is slidably disposed inside the door head (11), and the fixing block (306) is fixedly installed on the top inside of the door head (11).

5. The electric automatic door according to claim 4, characterized in that: The screw (307) is rotatably mounted on the fixed block (306), the screw (307) passes through the slide (304), and the screw (307) and the slide (304) are threadedly connected.

6. The electric automatic door according to claim 5, characterized in that: The guide rod (309) is fixedly installed inside the door head (11) and on one side of the synchronous belt (308). There are two mounting brackets (310), and the guide wheel (311) is rotatably installed on one side of the mounting bracket (310).

7. The electric automatic door according to claim 1, characterized in that: One of the positioning blocks (313) is fixedly installed at the upper end of the synchronous belt (308), and the other is fixedly installed at the lower end of the synchronous belt (308). The bottom end of the gantry (312) is fixedly installed with the gantry body.

8. The electric automatic door according to claim 1, characterized in that: The alarm assembly (4) includes a fixed cylinder (41), a spring (43), a slider (44) and a buzzer (46). The fixed cylinder (41) is fixedly installed inside the side plate (12). The surface of the fixed cylinder (41) is flush with the surface of the side plate (12). A trigger block (42) is fixedly installed inside the fixed cylinder (41).

9. The electric automatic door according to claim 8, characterized in that: One end of the spring (43) is fixedly installed on the inner wall of the fixed cylinder (41), and the other end is fixedly installed on the slider (44). The slider (44) and the inner wall of the fixed cylinder (41) are slidably connected.

10. The electric automatic door according to claim 9, characterized in that: The slider (44) is fixedly mounted with a contact block (45) at one end near the trigger block (42), and the buzzer (46) is fixedly mounted on the door head (11).