Safety structure of door rolling machine

Abstract

The utility model discloses a safety structure of a door rolling machine, which comprises an electromagnetic brake component fixed at one end of a machine body and sleeved on the outer side of an output shaft, and a brake disc B fixed on the outer surface of the output shaft, and the electromagnetic brake component comprises an outer cover, an electromagnetic coil and a movable disc; when the machine body is abnormal, the electromagnetic brake assembly is powered off, and magnetic force disappears, the movable disc and the brake disc A are pushed by the spring to move towards the brake disc B till the brake disc A and the brake disc B are in extrusion contact, in the extrusion process, the brake disc A can rotate to a certain degree along with the brake disc B, and the brake disc A and the movable disc are elastically connected, so that the brake disc A and the movable disc can rotate to a certain degree. When the brake disc A rotates, the collision force of the brake disc A to the rotation of the brake disc B becomes larger and larger until the brake disc B and the output shaft are completely braked, and the design has the advantages that the braking force is gradually increased, buffering time is provided for braking the output shaft, and damage to parts caused by instantaneous braking is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of safety technology for rolling door motors, and specifically relates to a safety structure for rolling door motors. Background Technology

[0002] A roller shutter motor is a specialized electromechanical device used to drive various types of roller shutter doors. As the core driving component of the roller shutter door, it converts electrical energy into mechanical energy through a motor, driving the roller shutter door's shaft to rotate, thereby realizing the roller shutter door's rising, falling, and stopping actions. To prevent the roller shutter door from accidentally slipping or going out of control during operation, a fall protection structure is generally installed on the roller shutter motor. When the roller shutter motor malfunctions, the safety structure can generate braking force on the output shaft of the roller shutter motor, thereby preventing the roller shutter door from falling.

[0003] However, the existing fall protection structure has certain shortcomings in use. The braking force generated by the safety structure on the motor output shaft is too direct and abrupt. The huge braking force generated instantaneously may impact the rolling door motor and the rolling door, causing component damage and shaking of the rolling door. Therefore, a new safety structure for the rolling door motor needs to be designed to solve this problem. Utility Model Content

[0004] The purpose of this invention is to provide a safety structure for a rolling door motor, in order to solve the problem mentioned in the background art that the existing safety structure is prone to impact damage to components due to the instantaneous braking generated by the motor output shaft.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a safety structure for a rolling door motor, comprising an electromagnetic braking assembly fixed to one end of the motor body and sleeved on the outside of the output shaft, and a brake disc B fixed to the outer surface of the output shaft. The electromagnetic braking assembly includes an outer cover, an electromagnetic coil, a movable disc, a spring, and a brake disc A. The electromagnetic coil and the movable disc are both installed inside the outer cover. The spring is fixed between the electromagnetic coil and the movable disc. The brake disc A is rotatably connected to the outer surface of the movable disc, and there is an elastic relationship between the two.

[0006] Preferably, the electromagnetic braking assembly further includes an inner cavity formed inside the movable disc, and a coil spring is disposed inside the inner cavity, with one end of the coil spring fixedly connected to a connecting piece A.

[0007] Preferably, a connecting piece B is fixed to the side of the brake disc A near the movable disc, and the connecting piece B and the connecting piece A are bonded together.

[0008] Preferably, the electromagnetic braking assembly further includes an annular groove formed on the surface of the movable disc, and a fixing ring embedded in the annular groove is fixed on one side of the brake disc A.

[0009] Preferably, one end of the electromagnetic coil is connected to a wire, and the electromagnetic coil is electrically connected to the machine body through the wire.

[0010] Preferably, a gear disk is fixed to one side of the output shaft, and a chain is meshed with the outer surface of the gear disk.

[0011] Preferably, a fixing frame is fixed to the outer surface of the machine body, a fixing connecting rod is fixed to one side of the fixing frame, and a base plate is fixedly connected to the other end of the fixing connecting rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] When the machine malfunctions, the electromagnetic braking assembly is de-energized, and the magnetic force disappears. At this time, the movable disc and brake disc A move towards brake disc B under the push of the spring until brake disc A and brake disc B are pressed into contact. During the pressing process, brake disc A can rotate to a certain extent along with brake disc B. The elastic connection between brake disc A and the movable disc makes the resistance of brake disc A to the rotation of brake disc B increase until brake disc B and the output shaft are completely braked. The advantage of this design is that the braking force increases gradually, providing a buffer time for braking the output shaft and avoiding damage to components caused by instantaneous braking. Attached Figure Description

[0014] Figure 1 This is a front sectional view of the present invention;

[0015] Figure 2 This utility model Figure 1 Enlarged view of area A in the middle;

[0016] Figure 3 This is a three-dimensional schematic diagram of the movable plate of this utility model;

[0017] Figure 4 This is a three-dimensional schematic diagram of the brake disc A of this utility model;

[0018] In the diagram: 100, body; 200, output shaft; 300, electromagnetic brake assembly; 301, outer cover; 302, electromagnetic coil; 303, movable disc; 304, spring; 305, brake disc A; 306, inner cavity; 307, coil spring; 308, connecting piece A; 309, connecting piece B; 3010, fixing ring; 3011, annular groove; 400, brake disc B; 500, gear disc; 600, chain; 700, fixing frame; 800, fixing connecting rod; 900, base plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example

[0021] Please see Figures 1 to 4 This embodiment of the present invention provides a technical solution: a safety structure for a rolling door motor, including an electromagnetic braking assembly 300 fixed to one end of the body 100 and sleeved on the outside of the output shaft 200, and a brake disc B400 fixed to the outer surface of the output shaft 200. When the rolling door motor starts, the output shaft 200 on the body 100 rotates, and the brake disc B400 rotates along with the output shaft 200. The electromagnetic braking assembly 300 includes an outer cover 301, an electromagnetic coil 302, a movable disc 303, a spring 304, and a brake disc A305. The electromagnetic coil 302 and the movable disc 303 are both installed inside the outer cover 301. The spring 304 is fixed between the electromagnetic coil 302 and the movable disc 303. The brake disc A305 is rotatably connected to the outer surface of the movable disc 303, and the two... There is an elastic relationship between the two. Under normal conditions, when the electromagnetic coil 302 is energized, it has magnetic force and attracts the movable disc 303. At this time, the brake disc A305 and the brake disc B400 are separated. When the rolling door motor malfunctions, the electromagnetic coil 302 is de-energized, the magnetic force disappears, and it no longer attracts the movable disc 303. At this time, the movable disc 303 and the brake disc A305 move towards the brake disc B400 under the push of the spring 304 until the brake disc A305 and the brake disc B400 are pressed into contact. Since the brake disc B400 still has rotational force driven by the output shaft 200, the brake disc A305 will rotate to a certain extent under the drive of the brake disc B400. The elastic relationship between the brake disc A305 and the movable disc 303 will generate an increasingly larger reaction force on the rotation until the brake disc B400 is completely stopped.

[0022] In this embodiment, preferably, the electromagnetic braking assembly 300 further includes an inner cavity 306 formed inside the movable disc 303. A coil spring 307 is disposed inside the inner cavity 306. One end of the coil spring 307 is fixedly connected to a connecting piece A308. A connecting piece B309 is fixedly attached to the side of the brake disc A305 near the movable disc 303. The connecting piece B309 and the connecting piece A308 are bonded and fixed. When the brake disc A305 rotates, the coil spring 307 is compressed, thereby generating a reaction force on the rotation of the brake disc A305.

[0023] In this embodiment, preferably, the electromagnetic braking assembly 300 further includes an annular groove 3011 formed on the surface of the movable disc 303, and a fixing ring 3010 embedded in the annular groove 3011 is fixed on one side of the brake disc A305 to complete the rotational connection between the movable disc 303 and the brake disc A305.

[0024] In this embodiment, preferably, one end of the electromagnetic coil 302 is connected to a wire, and the electromagnetic coil 302 is electrically connected to the body 100 through the wire. Once the body 100 malfunctions, the electromagnetic coil 302 will be de-energized.

[0025] In this embodiment, preferably, a gear disk 500 is fixed on one side of the output shaft 200, and a chain 600 is meshed with the outer surface of the gear disk 500. The gear disk 500 and the chain 600 can drive the rotating shaft on the roller door to rotate, thereby realizing the raising and lowering of the roller door.

[0026] In this embodiment, preferably, a fixing frame 700 is fixed to the outer surface of the body 100, a fixing connecting rod 800 is fixed to one side of the fixing frame 700, and a base plate 900 is fixedly connected to the other end of the fixing connecting rod 800, thereby completing the fixed installation of the body 100.

[0027] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety structure for a rolling door motor, comprising an electromagnetic braking assembly (300) fixed to one end of the motor body (100) and sleeved on the outside of the output shaft (200), and a brake disc B (400) fixed to the outer surface of the output shaft (200), characterized in that: The electromagnetic braking assembly (300) includes an outer cover (301), an electromagnetic coil (302), a movable disc (303), a spring (304), and a brake disc A (305). The electromagnetic coil (302) and the movable disc (303) are both installed inside the outer cover (301). The spring (304) is fixed between the electromagnetic coil (302) and the movable disc (303). The brake disc A (305) is rotatably connected to the outer surface of the movable disc (303), and there is an elastic relationship between the two.

2. The safety structure of a rolling door motor according to claim 1, characterized in that: The electromagnetic braking assembly (300) also includes an inner cavity (306) opened inside the movable disc (303), and a coil spring (307) is provided inside the inner cavity (306), with a connecting piece A (308) fixedly connected to one end of the coil spring (307).

3. The safety structure of a rolling door motor according to claim 2, characterized in that: A connecting piece B (309) is fixed on the side of the brake disc A (305) near the movable disc (303), and the connecting piece B (309) and the connecting piece A (308) are bonded and fixed together.

4. The safety structure of a rolling door motor according to claim 3, characterized in that: The electromagnetic braking assembly (300) also includes an annular groove (3011) formed on the surface of the movable disc (303), and a fixing ring (3010) embedded in the annular groove (3011) is fixed on one side of the brake disc A (305).

5. The safety structure of a rolling door motor according to claim 4, characterized in that: One end of the electromagnetic coil (302) is connected to a wire, and the electromagnetic coil (302) is electrically connected to the body (100) through the wire.

6. The safety structure of a rolling door motor according to claim 5, characterized in that: A gear disk (500) is fixed on one side of the output shaft (200), and a chain (600) is meshed with the outer surface of the gear disk (500).

7. The safety structure of a rolling door motor according to claim 6, characterized in that: A fixing frame (700) is fixed to the outer surface of the body (100), a fixing connecting rod (800) is fixed to one side of the fixing frame (700), and a base plate (900) is fixedly connected to the other end of the fixing connecting rod (800).

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