Door opener for roller shutter door

Abstract

The invention belongs to the technical field of roller shutter doors, and discloses a door opener for a roller shutter door, which comprises a transmission pipe, one end of the transmission pipe is fixedly provided with a first transmission gear, the interior of the roller shutter door is provided with a mute buffer mechanism, and through the cooperation of structures such as a first expansion wheel, a second expansion wheel and a limiting sleeve, the door opener is convenient to operate. According to the device, after open holes of a first expansion wheel and a second expansion wheel with customized sizes are aligned with open holes of a first connecting block and a second connecting block, limiting sleeves are inserted into the open holes, and after four sets of limiting blocks pass through the open holes, first reset springs extrude limiting rods and then extrude the limiting blocks through transmission grooves formed in the outer walls of the limiting rods; the angle of the limiting blocks is changed, at the moment, the limiting sleeves are pulled to make the four sets of limiting blocks abut against the outer wall of the first expansion wheel, and at the moment, the threaded sleeves are rotated to be tightened, so that installation of the first expansion wheel and the second expansion wheel is completed, and the purpose that the customization cost is conveniently reduced when the door opener is manufactured is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of rolling doors, and specifically relates to an opener for a rolling door. Background Art

[0002] As a common type of door, rolling doors are widely used in commercial facades, garages, shopping malls, hospitals, factories and mines and other public places or residences. It has door panels with multiple joints connected in series, and the start is driven by a motor group. It rotates up and down around the reel above the door in a fixed slideway, and has won wide recognition in the market with this characteristic.

[0003] However, when the existing openers for rolling doors are in use, they need to be customized in size according to different actual environments. Since the same type of motor takes different times to drive rolling doors of different heights to wind up, it is impossible to mass-produce openers with one type of motor to adapt to door frames of different heights, which increases the production cost and causes waste of resources.

[0004] By installing a disc larger than the diameter of the transmission pipe on the transmission pipe and installing a rolling curtain on the disc, it is possible to wind up the rolling curtain on the expansion disc. The diameter of the expansion disc is larger than the diameter of the common transmission pipe on which the rolling curtain is installed. After the motor rotates one week, the winding length of the expansion disc will be greater than the winding length of the transmission pipe, saving the workload of the customization link for the opener. Summary of the Invention

[0005] To solve the problems raised in the above background art, the present invention provides an opener for a rolling door.

[0006] To achieve the above object, the present invention provides the following technical solution: An opener for a rolling door, including a transmission pipe, one end of the transmission pipe is fixed with a first transmission gear, the outside of the first transmission gear is meshed and connected with a transmission chain, an adjustment mechanism is installed inside the transmission pipe, a quick-release mechanism is arranged outside the transmission pipe, one end of the quick-release mechanism is installed with a rolling door, and a silent buffer mechanism is arranged inside the rolling door;

[0007] The adjustment mechanism includes a servo motor, a second transmission gear and a first connection block. The servo motor is fixed inside the transmission pipe, the output end of the servo motor is fixed with the second transmission gear, a first connection block is movably connected inside the transmission pipe, and a second connection block is movably connected inside the transmission pipe;

[0008] The quick-release mechanism includes a first expansion wheel, a second expansion wheel and a limiting sleeve. The first expansion wheel is arranged outside the transmission pipe, the second expansion wheel is arranged outside the transmission pipe, and the limiting sleeve is arranged inside the first expansion wheel and the second expansion wheel;

[0009] The silent buffer mechanism includes a second return spring, a connecting tube and a connecting rod. The second return spring is fixed inside the rolling door. One end of the second return spring is fixed with a connecting tube. The inside of the connecting tube is movably connected with a connecting rod. The outside of the connecting rod is fixed with a pulley.

[0010] Preferably, the second transmission gear is movably connected inside the transmission tube, a plurality of groups of teeth are arranged outside the second transmission gear, a plurality of groups of teeth are arranged outside the first connecting block and the second connecting block, the second transmission gear is meshingly connected to the first connecting block, and the second transmission gear is meshingly connected to the second connecting block.

[0011] Preferably, the servo motor is provided with two groups, the outer wall of the first connecting block is close to the inner wall of the transmission tube, the outer wall of the second connecting block is close to the inner wall of the transmission tube, the first connecting block and the transmission tube are slidably connected, and the second connecting block and the transmission tube are slidably connected.

[0012] Preferably, the limiting sleeve is internally movably connected to a limiting block, the limiting sleeve is internally movably connected to a limiting rod, a transmission groove is provided on the outside of the limiting rod, a first return spring is fixed to one end of the limiting rod, and a threaded sleeve is provided on the outside of the limiting sleeve.

[0013] Preferably, the first expansion wheel and the second expansion wheel are provided with multiple groups of different sizes, the shape of the first expansion wheel is the same as the shape of the second expansion wheel, the first expansion wheel, the second expansion wheel, the first connecting block and the second connecting block are all provided with openings with the same diameter, and the outer diameter of the limiting sleeve is equal to the diameter of the opening.

[0014] Preferably, the limit blocks are provided with four groups hinged inside the limit sleeve, the limit blocks are distributed at equal intervals about the central axis of the limit sleeve, the outer wall of the limit rod is close to the inner wall of the limit sleeve, and the limit rod and the limit sleeve are slidably connected.

[0015] Preferably, the first return spring is used to squeeze the limiting rod and keep it moving outward, the limiting sleeve and the threaded sleeve are threadedly connected, the outer wall of the threaded sleeve is equidistantly provided with anti-sliding blocks, and the outer wall of the threaded sleeve is provided with a through hole.

[0016] Preferably, four groups of the second return springs are provided, and the second return springs are distributed at equal intervals about the central axis of the connecting cylinder. The second return springs are used to squeeze the connecting cylinder and keep it moving toward the central axis of the connecting cylinder.

[0017] Preferably, the inner wall of the connecting cylinder is close to the outer wall of the connecting rod, the connecting cylinder and the connecting rod are rotatably connected, and two groups of pulleys are provided, and the pulleys are symmetrically distributed about the central axis of the rolling door.

[0018] Preferably, the transmission chain is internally meshed and connected with a reduction base, an electric motor is fixed to one end of the reduction base, a brake assembly is installed at one end of the electric motor, a bracelet is arranged inside the brake assembly, and a motor box is fixed to one end of the brake assembly.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention cooperates with structures such as the first expansion wheel, the second expansion wheel and the limiting sleeve, so that the device can align the openings of the first expansion wheel and the second expansion wheel of customized size with the openings of the first connecting block and the second connecting block, and then insert the limiting sleeve into the opening, so that after the four groups of limiting blocks pass through the opening, the first return spring squeezes the limiting rod and then squeezes the limiting block through the transmission groove opened on the outer wall of the limiting rod, so that the angle of the limiting block changes. At this time, pulling the limiting sleeve can make the four groups of limiting blocks collide with the outer wall of the first expansion wheel. At this time, rotating the threaded sleeve to tighten it, the limiting block and the first expansion wheel The threaded sleeve is in friction connection with the second expansion wheel, thereby completing the installation of the first expansion wheel and the second expansion wheel. Furthermore, when the test diameter customization needs to be removed, the threaded sleeve is reversed and removed, the limit rod is pressed to squeeze the first reset spring and reset the limit block through the transmission groove. After the storage of the limit block is completed, the limit sleeve can be removed as a whole, thereby completing the replacement of the first expansion wheel and the second expansion wheel of different diameters. The customization cost of the first expansion wheel and the second expansion wheel is less than the overall customization cost, thereby achieving the purpose of reducing the customization cost when facilitating the production of the door opener.

[0021] The present invention arranges the coordination of structures such as a servo motor, a second transmission gear, and a first connecting block, so that the device can drive the second transmission gear to rotate by starting the servo motor and then drive the first connecting block and the second connecting block to move toward each other, so that the positions of the openings of the first connecting block and the second connecting block can be adjusted, and the device can adapt to first expansion wheels and limiting sleeves of different diameters to connect with the first connecting block and the second connecting block. Using this method, the manufacturer only needs to customize the length of the transmission tube and the rolling door and the shape of the first expansion wheel and the second expansion wheel, thereby expanding the overall adaptability of the device, thereby achieving the purpose of facilitating the device to quickly adapt to door frames of different heights.

[0022] Through the cooperation of the second reset spring, the connecting cylinder, and the connecting rod structure provided in the present invention, the device can be provided with a chute on the wall surface to match the pulley. The pulley can reduce the friction between the rolling door and the door frame, making its opening and closing smoother. Further, when there is a bump in the chute during the sliding process, the second reset spring can quickly squeeze the connecting cylinder to complete the reset of the pulley, so as to achieve the effect of shock absorption and reduce noise, thereby achieving the purpose of making the device open and close more smoothly and performing silent buffering. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the overall structure of the present invention;

[0024] Figure 2 Schematic diagram of the overall right view structure of the present invention;

[0025] Figure 3 Schematic diagram of the power component structure of the present invention;

[0026] Figure 4 Schematic diagram of the cross-sectional structure of the expansion component of the present invention;

[0027] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged partial cross-sectional structure at A in;

[0028] Figure 6 Schematic diagram of the exploded cross-sectional structure of the expansion component of the present invention;

[0029] Figure 7 Schematic diagram of the adjustment component structure of the present invention;

[0030] Figure 8 Schematic diagram of the rolling door structure of the present invention;

[0031] Fig. 9 Schematic diagram of the silent buffering mechanism structure of the present invention.

[0032] In the figure: 1, motor box; 2, braking component; 3, bracelet; 4, electric motor; 5, reduction base; 6, transmission chain; 7, first transmission gear; 8, transmission pipe; 9, adjustment mechanism; 901, servo motor; 902, second transmission gear; 903, first connection block; 904, second connection block; 10, quick-release mechanism; 1001, first expansion wheel; 1002, second expansion wheel; 1003, limit sleeve; 1004, limit block; 1005, limit rod; 1006, transmission groove; 1007, first reset spring; 1008, threaded sleeve; 11, rolling door; 12, silent buffering mechanism; 1201, second reset spring; 1202, connecting cylinder; 1203, connecting rod; 1204, pulley. DETAILED DESCRIPTION OF THE INVENTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 9 As shown, the present invention provides a door opener for a rolling door, including a transmission tube 8, a first transmission gear 7 is fixed to one end of the transmission tube 8, a transmission chain 6 is meshedly connected to the outside of the first transmission gear 7, an adjustment mechanism 9 is installed inside the transmission tube 8, a quick release mechanism 10 is arranged on the outside of the transmission tube 8, a rolling door 11 is installed at one end of the quick release mechanism 10, a silent buffer mechanism 12 is arranged inside the rolling door 11, a reduction base 5 is meshedly connected to the inside of the transmission chain 6, an electric motor 4 is fixed to one end of the reduction base 5, a brake assembly 2 is installed to one end of the electric motor 4, a bracelet 3 is arranged inside the brake assembly 2, and a motor box 1 is fixed to one end of the brake assembly 2.

[0035] The above scheme is adopted: by starting the electric motor 4 to drive the gear inside the reduction base 5 to rotate and drive the transmission chain 6 to move through the gear, and the first transmission gear 7 is driven by the transmission chain 6 to rotate, and then the rotation of the first transmission gear 7 drives the transmission tube 8 to rotate, and then the rolling door 11 is rolled up. This part of the components is the existing technology in this field and will not be elaborated here.

[0036] like Figures 1 to 9 As shown, the adjustment mechanism 9 includes a servo motor 901, a second transmission gear 902 and a first connecting block 903. The servo motor 901 is fixed inside the transmission tube 8. The second transmission gear 902 is fixed to the output end of the servo motor 901. The first connecting block 903 is movably connected to the inside of the transmission tube 8. The second connecting block 904 is movably connected to the inside of the transmission tube 8. The second transmission gear 902 is movably connected to the inside of the transmission tube 8. Several groups of teeth are arranged on the outside of the second transmission gear 902. Several groups of teeth are arranged on the outside of the first connecting block 903 and the second connecting block 904. The second transmission gear 902 is meshedly connected to the first connecting block 903. The second transmission gear 902 is meshedly connected to the second connecting block 904. The servo motor 901 is provided with two groups. The outer wall of the first connecting block 903 is close to the inner wall of the transmission tube 8. The outer wall of the second connecting block 904 is close to the inner wall of the transmission tube 8. The first connecting block 903 is slidably connected to the transmission tube 8. The second connecting block 904 is slidably connected to the transmission tube 8.

[0037] The above scheme is adopted: by starting the servo motor 901 to drive the second transmission gear 902 to rotate and then drive the first connecting block 903 and the second connecting block 904 to move towards each other, so that the positions of the openings of the first connecting block 903 and the second connecting block 904 can be adjusted, so that the device can adapt to the first expansion wheel 1001 and the limiting sleeve 1003 of different diameters to connect with the first connecting block 903 and the second connecting block 904.

[0038] like Figures 1 to 9 As shown, the quick release mechanism 10 includes a first expansion wheel 1001, a second expansion wheel 1002 and a limiting sleeve 1003. The first expansion wheel 1001 is arranged on the outside of the transmission tube 8, and the second expansion wheel 1002 is arranged on the outside of the transmission tube 8. The limiting sleeve 1003 is arranged inside the first expansion wheel 1001 and the second expansion wheel 1002. The first expansion wheel 1001 and the second expansion wheel 1002 are provided with multiple groups of different sizes. The shape of the first expansion wheel 1001 and the shape of the second expansion wheel 1002 are the same. The first expansion wheel 1001, the second expansion wheel 1002, the first connecting block 903 and the second connecting block 904 are all provided with openings with the same diameter, and the outer diameter of the limiting sleeve 1003 is equal to the diameter of the opening.

[0039] like Figures 1 to 9 As shown, the limiting sleeve 1003 is internally movably connected to the limiting block 1004, the limiting sleeve 1003 is internally movably connected to the limiting rod 1005, the limiting block 1004 is provided with four groups hinged inside the limiting sleeve 1003, the limiting blocks 1004 are evenly spaced about the central axis of the limiting sleeve 1003, the outer wall of the limiting rod 1005 is close to the inner wall of the limiting sleeve 1003, and the limiting rod 1005 and the limiting sleeve 1003 are slidably connected.

[0040] like Figures 1 to 9 As shown, a transmission groove 1006 is provided on the outside of the limiting rod 1005, a first return spring 1007 is fixed to one end of the limiting rod 1005, a threaded sleeve 1008 is provided on the outside of the limiting sleeve 1003, the first return spring 1007 is used to squeeze the limiting rod 1005 and keep it moving outward, the limiting sleeve 1003 and the threaded sleeve 1008 are threadedly connected, anti-sliding blocks are equidistantly provided on the outer wall of the threaded sleeve 1008, and a through hole is provided on the outer wall of the threaded sleeve 1008.

[0041] The above scheme is adopted: after aligning the openings of the first expansion wheel 1001 and the second expansion wheel 1002 of customized size with the openings of the first connecting block 903 and the second connecting block 904, the limiting sleeve 1003 is inserted into the opening, so that after the four groups of limiting blocks 1004 pass through the opening, the first return spring 1007 squeezes the limiting rod 1005 and then squeezes the limiting block 1004 through the transmission groove 1006 opened on the outer wall of the limiting rod 1005, so that the angle of the limiting block 1004 changes. At this time, pulling the limiting sleeve 1003 can make the four groups of limiting blocks 1004 contact with the outer wall of the first expansion wheel 1001. At this time, the threaded sleeve 1008 is rotated to tighten it, and the limiting block 1004 is connected to the first expansion wheel 1001, and the threaded sleeve 1008 is connected to the second expansion wheel 1002, thereby completing the installation of the first expansion wheel 1001 and the second expansion wheel 1002.

[0042] like Figures 1 to 9 As shown, the silent buffer mechanism 12 includes a second return spring 1201, a connecting tube 1202 and a connecting rod 1203. The second return spring 1201 is fixed inside the rolling door 11. The connecting tube 1202 is fixed at one end of the second return spring 1201. Four groups of second return springs 1201 are arranged. The second return springs 1201 are distributed at equal intervals about the central axis of the connecting tube 1202. The second return spring 1201 is used to squeeze the connecting tube 1202 and keep it moving in the direction of the central axis of the connecting tube 1202.

[0043] like Figures 1 to 9 As shown, the connecting cylinder 1202 is movably connected to the connecting rod 1203 inside, and a pulley 1204 is fixed to the outside of the connecting rod 1203. The inner wall of the connecting cylinder 1202 is close to the outer wall of the connecting rod 1203. The connecting cylinder 1202 and the connecting rod 1203 are rotatably connected. Two groups of pulleys 1204 are provided, and the pulleys 1204 are symmetrically distributed about the central axis of the rolling door 11.

[0044] The above solution is adopted: by arranging a sliding groove on the wall to match the pulley 1204, the friction between the rolling door 11 and the door frame can be reduced by the pulley 1204, thereby making the opening and closing of the rolling door 11 smoother.

[0045] The working principle and use process of the present invention are as follows: the electric motor 4 is started to drive the gear inside the reduction base 5 to rotate and the transmission chain 6 is driven to move through the gear. The first transmission gear 7 is driven to rotate by the transmission chain 6, and then the rotation of the first transmission gear 7 drives the transmission tube 8 to rotate, and then the rolling door 11 is rolled up. When the first expansion wheel 1001 and the second expansion wheel 1002 need to be removed and replaced for test diameter customization, the threaded sleeve 1008 is reversed and removed, and the limiting rod 1005 is pressed to squeeze the first reset spring 1007 and squeeze the limiting block 1004 through the transmission groove 1006 to reset. After the storage of the limiting block 1004 is completed, the limiting sleeve 1003 can be removed as a whole, thereby completing the replacement of the first expansion wheel 1001 and the second expansion wheel 1002 of different diameters. The customization cost of the first expansion wheel 1001 and the second expansion wheel 1002 is less than the overall customization cost. When the first expansion wheel 1001 and the second expansion wheel 1002 are positioned, the servo motor 901 is started. The second transmission gear 902 is driven to rotate and then the first connecting block 903 and the second connecting block 904 are driven to move towards each other, so that the positions of the openings of the first connecting block 903 and the second connecting block 904 can be adjusted, so that the device can adapt to the first expansion wheel 1001 and the limiting sleeve 1003 of different diameters to connect with the first connecting block 903 and the second connecting block 904. Using this method, the manufacturer only needs to customize the length of the transmission tube 8 and the rolling door 11 and the shape of the first expansion wheel 1001 and the second expansion wheel 1002, thereby expanding the overall adaptability of the device, and setting a slide groove on the wall to match the pulley 1204. The pulley 1204 can reduce the friction between the rolling door 11 and the door frame, thereby making its opening and closing smoother. Furthermore, if a bump occurs in the slide groove during the sliding process, the second reset spring 1201 can quickly squeeze the connecting tube 1202 to complete the reset of the pulley 1204, so as to achieve a shock-absorbing effect and reduce noise.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A door opener for a rolling door, comprising a transmission tube (8), characterized in that: A first transmission gear (7) is fixed to one end of the transmission tube (8), the first transmission gear (7) is meshedly connected to the outside of the transmission tube (8), an adjustment mechanism (9) is installed inside the transmission tube (8), a quick release mechanism (10) is arranged outside the transmission tube (8), a rolling door (11) is installed at one end of the quick release mechanism (10), and a silent buffer mechanism (12) is arranged inside the rolling door (11); The regulating mechanism (9) comprises a servo motor (901), a second transmission gear (902) and a first connection block (903); the servo motor (901) is fixed inside the transmission tube (8); the second transmission gear (902) is fixed to the output end of the servo motor (901); the first connection block (903) is movably connected inside the transmission tube (8); and the second connection block (904) is movably connected inside the transmission tube (8); The quick-release mechanism (10) comprises a first expansion wheel (1001), a second expansion wheel (1002) and a limiting sleeve (1003); the first expansion wheel (1001) is arranged outside the transmission tube (8); the second expansion wheel (1002) is arranged outside the transmission tube (8); and the limiting sleeve (1003) is arranged inside the first expansion wheel (1001) and the second expansion wheel (1002); The silent buffer mechanism (12) comprises a second return spring (1201), a connecting tube (1202) and a connecting rod (1203); the second return spring (1201) is fixed inside the rolling door (11); one end of the second return spring (1201) is fixed with a connecting tube (1202); the interior of the connecting tube (1202) is movably connected with a connecting rod (1203); and a pulley (1204) is fixed outside the connecting rod (1203).

2. The door opener for rolling door according to claim 1, characterized in that: The second transmission gear (902) is movably connected to the inside of the transmission tube (8); a plurality of groups of teeth are arranged on the outside of the second transmission gear (902); a plurality of groups of teeth are arranged on the outside of the first connecting block (903) and the second connecting block (904); the second transmission gear (902) and the first connecting block (903) are meshingly connected; and the second transmission gear (902) and the second connecting block (904) are meshingly connected.

3. The door opener for rolling door according to claim 1, characterized in that: The servo motor (901) is provided with two groups, the outer wall of the first connecting block (903) is close to the inner wall of the transmission tube (8), the outer wall of the second connecting block (904) is close to the inner wall of the transmission tube (8), the first connecting block (903) and the transmission tube (8) are slidably connected, and the second connecting block (904) and the transmission tube (8) are slidably connected.

4. The door opener for rolling door according to claim 1, characterized in that: The limiting sleeve (1003) is internally movably connected to a limiting block (1004), the limiting sleeve (1003) is internally movably connected to a limiting rod (1005), a transmission groove (1006) is provided on the outside of the limiting rod (1005), a first return spring (1007) is fixed to one end of the limiting rod (1005), and a threaded sleeve (1008) is provided on the outside of the limiting sleeve (1003).

5. The door opener for rolling door according to claim 4, characterized in that: The first expansion wheel (1001) and the second expansion wheel (1002) are provided with a plurality of groups of different sizes, the shape of the first expansion wheel (1001) is the same as the shape of the second expansion wheel (1002), the first expansion wheel (1001), the second expansion wheel (1002), the first connecting block (903) and the second connecting block (904) are all provided with openings of the same diameter, and the outer diameter of the limiting sleeve (1003) is equal to the diameter of the opening.

6. The door opener for rolling door according to claim 4, characterized in that: The limit block (1004) is provided with four groups hinged inside the limit sleeve (1003), the limit blocks (1004) are distributed at equal intervals about the central axis of the limit sleeve (1003), the outer wall of the limit rod (1005) is close to the inner wall of the limit sleeve (1003), and the limit rod (1005) and the limit sleeve (1003) are slidably connected.

7. The door opener for rolling door according to claim 4, characterized in that: The first return spring (1007) is used to squeeze the limiting rod (1005) and keep it moving outward. The limiting sleeve (1003) and the threaded sleeve (1008) are threadedly connected. The outer wall of the threaded sleeve (1008) is equidistantly provided with anti-sliding blocks. The outer wall of the threaded sleeve (1008) is provided with a through hole.

8. The door opener for rolling door according to claim 1, characterized in that: Four groups of the second return springs (1201) are provided. The second return springs (1201) are distributed at equal intervals about the central axis of the connecting tube (1202). The second return springs (1201) are used to squeeze the connecting tube (1202) and keep it moving in the direction of the central axis of the connecting tube (1202).

9. The door opener for rolling door according to claim 1, characterized in that: The inner wall of the connecting tube (1202) is close to the outer wall of the connecting rod (1203), the connecting tube (1202) and the connecting rod (1203) are rotatably connected, two groups of pulleys (1204) are provided, and the pulleys (1204) are symmetrically distributed about the central axis of the rolling door (11).

10. The door opener for rolling door according to claim 1, characterized in that: The transmission chain (6) is internally meshed with a deceleration base (5), one end of the deceleration base (5) is fixed with an electric motor (4), one end of the electric motor (4) is mounted with a brake assembly (2), a bracelet (3) is arranged inside the brake assembly (2), and one end of the brake assembly (2) is fixed with a motor box (1).

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