A short stroke overhead door operator

Abstract

The application relates to a short-stroke vertical hinged door machine which comprises a motor, a speed reduction mechanism and a transmission mechanism, the speed reduction mechanism comprises a first speed reduction gear set, a planetary disc and a second speed reduction gear set, the output end of the motor is connected with the output end of the first speed reduction gear set, the output end of the first speed reduction gear set is rotationally connected with the planetary disc, the rotation center of the planetary disc is fixedly connected with the input end of the second speed reduction gear set, the output end of the second speed reduction gear set is connected with the input end of the transmission mechanism, and the rotation central axis of the first speed reduction gear set, the rotation central axis of the planetary disc and the rotation central axis of the second speed reduction gear set are coaxial. The motor can convert the high-speed rotating kinetic energy into low-speed and high-torque rotating motion through cooperation of the first speed reduction gear set and the second speed reduction gear set, in the process, the torque is significantly increased, the torque can be stably transmitted, energy loss is reduced, and the transmission mechanism can meet the requirement of driving the vertical hinged door.

Description

Technical Field

[0001] This application relates to the field of swing gate equipment, and in particular to a short-stroke swing gate operator. Background Technology

[0002] Currently, both domestically and internationally, hydraulic or mechanical push rods are generally used to open or close swing doors that rotate around the hinge axis. The push rod device is typically mounted at one end near the hinge axis on the door side, and the other end is mounted on the wall adjacent to the hinge axis. The horizontal extension and retraction of the push rod drives the swing door to open and close.

[0003] Due to the working mechanism of the push rod device, it has the following disadvantages: high power loss, requiring a large-power motor, high noise, high cost, large footprint, and difficulty in finding a suitable installation location; moreover, the reaction force of the door on the push rod is amplified by tens or even hundreds of times through the lever principle, making the push rod device easy to damage and inconvenient to maintain, and the hydraulic device is prone to oil leakage, which prevents its widespread use. Summary of the Invention

[0004] To address the issue of large footprint and easy damage of swing gates, this application provides a short-stroke swing gate operator.

[0005] The short-stroke swing gate operator provided in this application adopts the following technical solution: A short-stroke swing gate operator includes a motor, a reduction mechanism, and a transmission mechanism. The reduction mechanism includes a first reduction gear set, a planetary disk, and a second reduction gear set. The output end of the motor is connected to the output end of the first reduction gear set, and the output end of the first reduction gear set is rotatably connected to the planetary disk. The rotation center of the planetary disk is fixedly connected to the input end of the second reduction gear set. The output end of the second reduction gear set is connected to the input end of the transmission mechanism. The rotation axis of the first reduction gear set, the rotation axis of the planetary disk, and the rotation axis of the second reduction gear set are coaxial.

[0006] By adopting the above technical solution, the motor can initially reduce speed and increase torque through the first reduction gear set. The torque of the first reduction gear set is transmitted to the second reduction gear set through the planetary disk for secondary speed reduction and torque increase. Finally, the kinetic energy of high-speed rotation is converted into low-speed, high-torque rotational motion through the first reduction gear set and the second reduction gear set. In this process, the torque is significantly increased. Furthermore, the rotation axis of the first reduction gear set, the rotation axis of the planetary disk, and the rotation axis of the second reduction gear set are coaxial, which enables stable torque transmission, reduces energy loss, and allows the transmission mechanism to meet the requirements of driving the swing door, driving the swing door to open or close at a set speed.

[0007] Optionally, a clutch mechanism is provided on the side of the deceleration mechanism. The deceleration mechanism includes an outer wheel. The first and second deceleration gear sets mesh with the inner wall of the outer wheel. The outer wheel has several limiting holes on its end face facing the clutch mechanism. The clutch mechanism extends and retracts towards the end face of the outer wheel. The clutch mechanism is inserted into any of the limiting holes to limit the rotation of the outer wheel.

[0008] By adopting the above technical solution, when the clutch mechanism disengages from the outer wheel, the outer wheel rotates freely. During the rotation of the first and second reduction gear sets, the outer wheel is driven to rotate. The torque of the motor can be transmitted to the outer wheel through the reduction mechanism. After the motor is powered on, the transmission mechanism remains stationary, preventing the swing door from starting automatically when powered on. When the clutch mechanism is inserted into any of the limit holes, the outer wheel is restricted to remain stationary relative to the fixed seat. Both the first and second reduction gear sets can rotate with the outer wheel. The torque of the motor can be transmitted to the transmission mechanism through the reduction mechanism, controlling the movement of the transmission mechanism, thereby controlling the start or stop of the transmission mechanism.

[0009] Optionally, the first reduction gear set includes a first sun gear and a plurality of first planetary gears. The first sun gear is fixedly connected to the output shaft of the motor, and the plurality of first planetary gears are all meshed with the circumferential direction of the first sun gear, and the plurality of first planetary gears are all rotatably connected to the planetary disk.

[0010] By adopting the above technical solution, the first sun gear serves as the input shaft. When the motor's torque is applied, the first sun gear begins to rotate. The first planetary gear begins to revolve around the first sun gear as the first sun gear rotates. At the same time, the first planetary gear rotates on its own axis, thereby driving the planetary disk to rotate, reducing the motor's output speed, and increasing the output torque transmitted to the planetary disk.

[0011] Optionally, the second reduction gear set includes a second sun gear and a plurality of second planetary gears. One end of the second sun gear is connected to the rotation center of the planetary disk and rotates synchronously, and the other end is rotatably connected to the rotation center of the flange. The plurality of second planetary gears are all meshed with the circumferential direction of the second sun gear, and the plurality of second planetary gears are all rotatably connected to the flange. The flange is connected to the input end of the transmission mechanism.

[0012] By adopting the above technical solution, the second sun gear serves as the input shaft for the two-stage reduction. When the planetary disk torque is applied, the second sun gear begins to rotate, and the second planetary gear revolves around the second sun gear while simultaneously rotating on its own axis. This drives the transmission mechanism through the flange, controlling the opening and closing of the swing door. During this process, the second reduction gear set performs secondary reduction on the first reduction gear set, providing a higher torque transmission capability. This allows the reduction mechanism to better handle heavy loads, improving the reliability and stability of the entire system. At the same time, it achieves a large reduction ratio within a small space, resulting in a relatively compact structure and contributing to a reduction in equipment weight.

[0013] Optionally, a guide rod is provided between the first reduction gear set and the second reduction gear set, and the first sun gear, the second sun gear and the flange are rotatably connected in sequence, and the first sun gear, the second sun gear and the flange rotate independently on the same rotating shaft.

[0014] By adopting the above technical solution, the guide rod ensures that the gears are on the same axis, thereby guaranteeing the coaxiality of the first sun gear, the second sun gear, and the flange. This reduces the risk of gear axis misalignment, improves gear meshing and transmission efficiency, and through the support and guidance of the guide rod, allows the first and second reduction gear sets to rotate more stably, reducing vibration and sway, effectively absorbing and dispersing vibration and impact during transmission, improving gear stability, and extending their service life.

[0015] Optionally, the clutch mechanism includes a support base and a clutch element. The support base is disposed between the motor and the reduction mechanism. The clutch element is slidably connected to the support base, and a portion of the clutch element extends out of the support base and passes through any limiting hole.

[0016] By adopting the above technical solution, when the clutch slides relative to the support seat and passes through the limiting hole, it can restrict the rotation of the outer wheel. In this state, the motor can drive the transmission mechanism through the reduction mechanism. When the clutch retracts into the support seat, the outer wheel rotates freely. Under the action of the motor torque, the outer wheel rotates, but the motor torque is not transmitted to the transmission mechanism, so that the transmission mechanism is in a stationary state, avoiding the safety hazards caused by the torque generated when the motor starts.

[0017] Optionally, the clutch mechanism further includes a drive component and a spring. The drive component is rotatably connected to the support base. A guide block is fixedly connected to the end face of the drive component facing the clutch component. The clutch component has a guide groove. The guide block abuts against the inner wall of the guide groove. One end of the spring is fixedly connected to the clutch component, and the other end is fixedly connected to the support base.

[0018] By adopting the above technical solution, the operator rotates the drive component to make the guide block rotate eccentrically, thereby controlling the movement of the clutch component. At the same time, under the action of the spring force, the clutch component always remains pressed against the guide block. The guide block can accurately control the stroke of the clutch component, thereby accurately controlling the clutch state with the outer wheel.

[0019] Optionally, the transmission mechanism includes a housing mechanism, comprising a transmission screw and a moving block. The transmission screw is rotatably connected to the base, one end of the transmission screw is fixedly connected to a flange, the moving block is threadedly connected to the transmission screw, and the moving block is slidably connected to a slide groove for driving the swing door to move.

[0020] By adopting the above technical solution, the transmission lead screw converts the rotational motion of the reduction mechanism into linear motion, driving the moving block to move along a predetermined trajectory. The moving block can drive the opening and closing of the swing door, enabling the swing door to be precisely positioned and avoiding shaking or jamming during the opening or closing process.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The motor can initially reduce speed and increase torque through the first reduction gear set. The torque of the first reduction gear set is transmitted to the second reduction gear set through the planetary disk for secondary speed reduction and torque increase. Finally, the kinetic energy of high-speed rotation is converted into low-speed, high-torque rotational motion through the first reduction gear set and the second reduction gear set. In this process, the torque is significantly increased. Furthermore, the rotation axis of the first reduction gear set, the rotation axis of the planetary disk, and the rotation axis of the second reduction gear set are coaxial, which enables stable torque transmission, reduces energy loss, and allows the transmission mechanism to meet the requirements of driving the swing door, driving the swing door to open or close at a set speed. 2. When the clutch mechanism disengages from the outer wheel, the outer wheel rotates freely. The first and second reduction gear sets drive the outer wheel to rotate during the rotation. The torque of the motor can be transmitted to the outer wheel through the reduction mechanism. After the motor is powered on, the transmission mechanism remains stationary to prevent the swing door from starting automatically when powered on. When the clutch mechanism is inserted into any of the limit holes, the outer wheel is restricted to remain stationary relative to the fixed seat. Both the first and second reduction gear sets can rotate with the outer wheel. The torque of the motor can be transmitted to the transmission mechanism through the reduction mechanism to control the movement of the transmission mechanism, thereby controlling the start or stop of the transmission mechanism. 3. The second sun gear serves as the input shaft for the two-stage reduction gear. When the planetary disk torque is applied, the second sun gear begins to rotate, and the second planetary gear revolves around the second sun gear while simultaneously rotating on its own axis. This drives the transmission mechanism through the flange, controlling the opening and closing of the swing door. During this process, the second reduction gear set performs secondary reduction on the first reduction gear set, providing a higher torque transmission capacity. This allows the reduction mechanism to better handle heavy loads, improving the reliability and stability of the entire system. Furthermore, it achieves a large reduction ratio within a relatively small space, resulting in a relatively compact structure and contributing to a reduction in equipment weight. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a short-stroke swing gate operator according to this application.

[0023] Figure 2 This is a schematic diagram of the exploded structure of the fixed part of the outer vessel in this application.

[0024] Figure 3 This is a schematic diagram of the deceleration mechanism of this application.

[0025] Figure 4 This is an exploded structural diagram of the deceleration mechanism of this application.

[0026] Figure 5 This is a schematic diagram of the exploded structure of the clutch mechanism in this application.

[0027] Figure 6 This is a schematic diagram of the transmission mechanism of this application.

[0028] Explanation of reference numerals in the attached figures: 100. Housing mechanism; 110. Top cover; 120. Base; 121. Slide groove; 200. Reduction mechanism; 210. Fixed seat; 211. Groove; 212. Positioning hole; 220. Outer wheel; 221. Limiting hole; 230. First reduction gear set; 231. First sun gear; 232. First planetary gear; 233. First rotating rod; 240. Second reduction gear set; 241. Second sun gear; 242. 243. Second planetary gear; 250. Second rotating rod; 251. Planetary disk; 252. Locking hole; 253. First slot; 260. Flange; 270. Guide rod; 300. Motor; 400. Transmission mechanism; 410. Transmission screw; 420. Moving block; 500. Clutch mechanism; 510. Support base; 520. Driving component; 530. Clutch component; 531. Guide groove; 540. Guide block; 550. Spring. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] This application discloses a short-stroke swing gate operator.

[0031] Reference Figure 1 The short-stroke swing gate operator includes a housing mechanism 100, a motor 300, a reduction mechanism 200, and a transmission mechanism 400. The motor 300, the reduction mechanism 200, and the transmission mechanism 400 are all located inside the housing mechanism 100. The output end of the motor 300 is connected to the input end of the reduction mechanism 200, and the output end of the reduction mechanism 200 is connected to the output end of the transmission mechanism 400. The reduction mechanism 200 reduces the torque output of the motor 300 and increases the torque output of the motor 300, thereby stably and safely driving the transmission mechanism 400 to move.

[0032] The housing mechanism 100 includes a top cover 110 and a base 120, which are bolted together. The space between the top cover 110 and the base 120 is used to prevent the reduction mechanism 200 and the transmission mechanism 400 from moving. The top of the motor 300 abuts against the top cover 110, and the bottom of the motor 300 is circumferentially engaged with the base 120. The motor 300 is also threadedly connected to the base 120 to restrict its movement. The output shaft of the motor 300 faces the reduction mechanism 200.

[0033] Reference Figure 2 The reduction mechanism 200 includes a fixed base 210 and an outer wheel 220. The fixed base 210 has several grooves 211 circumferentially arranged, and the inner wall of the base 120 has several limiting bosses that mate with the grooves 211. The bosses engage with the grooves 211 to restrict the movement of the fixed base 210. The fixed base 210 is hollow, and its central axis is coaxial with the central axis of the output shaft of the motor 300. The end face of the fixed base 210 facing the motor 300 is an annular surface, and this end face has a positioning hole 212. The end face of the fixed base 210 away from the motor 300 is open to allow for the installation of parts such as the outer wheel 220. The outer wheel 220 is rotatably connected inside the fixed base 210, and its outer wall abuts against the inner wall of the fixed base 210. The rotational axis of the outer wheel 220 is coaxial with the central axis of the fixed base 210, enabling the outer wheel 220 to rotate stably. The end face of the outer wheel 220 facing the motor 300 is an annular surface, and several limiting holes 221 are distributed in a circumferential array on this end face. When the outer wheel 220 rotates relative to the fixed base 210, any limiting hole 221 can communicate with the positioning hole 212. The base 120 is provided with a clutch mechanism 500. The output end of the clutch mechanism 500 extends and retracts towards the positioning hole 212, so that the outer wheel 220 has at least two states: State 1, the output end of the clutch mechanism 500 passes through the positioning hole 212 and the limiting hole 221 in sequence, and the outer wheel 220 is locked with the fixed base 210; State 2, the output end of the clutch mechanism 500 exits the limiting hole 221, and the outer wheel 220 rotates freely relative to the fixed base 210.

[0034] Reference Figure 3 and Figure 4 The reduction mechanism 200 further includes a first reduction gear set 230 and a second reduction gear set 240. The first reduction gear set 230 includes a first sun gear 231, a plurality of first planetary gears 232, and a plurality of first rotating rods 233. One end of the first sun gear 231 is fixedly connected to the output end of the motor 300 via a coupling. The plurality of first planetary gears 232 mesh with the circumferential direction of the first sun gear 231. The outer gear 220 has internal teeth, and the external teeth of the plurality of first planetary gears mesh with the internal teeth of the outer gear 220. The first planetary gears 232 and the first rotating rods 233 correspond one-to-one. The first rotating rods 233 are rotatably connected to the first planetary gears 232, and the rotation axis of the first rotating rods 233 is coaxial with the rotation axis of the corresponding first planetary gear 232. The first sun gear 231 is rotatably connected to a guide rod 270 for connecting the first reduction gear set 230 and the second reduction gear set 240.

[0035] A planetary disk 250 is provided between the first reduction gear set 230 and the second reduction gear set 240. The planetary disk 250 has a locking hole 251 near its middle position and several first slots 252. The several slots are arranged in a circular array with the locking hole 251 as the center. The first rotating rod 233 is rotatably connected to the first slots 252 in a one-to-one correspondence.

[0036] The second reduction gear set 240 includes a second sun gear 241, a plurality of second planetary gears 242, and a plurality of second rotating rods 243. The second sun gear 241 engages with the locking hole 251, and the second sun gear 241 and the planetary disk 250 rotate synchronously. The plurality of second planetary gears 242 mesh circumferentially with the second sun gear 241, and the outer walls of the plurality of second planetary gears 242 mesh with the internal teeth of the outer gear 220. Each second rotating rod 243 corresponds to one of the second planetary gears 242. One end of each second rotating rod 243 is rotatably connected to a second planetary gear 242, and the other end is rotatably connected to a flange 260. The rotatable connection between the second rotating rod 243 and the flange 260 allows the second planetary gear 242 to rotate independently. The guide rod 270 rotatably connects the first sun gear 231, the second sun gear 241, and the flange 260 in sequence, allowing the first sun gear 231, the second sun gear 241, and the flange 260 to rotate independently on the same rotating shaft.

[0037] The flange 260 is fixedly connected to the transmission mechanism 400 on the side opposite to the second sun gear 241. The first reduction gear and the second reduction gear adjust the torque output by the motor 300 to reduce the speed of the motor 300 and increase the output torque, so as to better drive the transmission mechanism 400.

[0038] Reference Figure 5The clutch mechanism 500 includes a support base 510, a drive member 520, and a clutch member 530. The support base 510 is bolted to the base 120. The drive member 520 is rotatably connected to the inside of the support base 510. The clutch member 530 is slidably connected to the inside of the support base 510. The clutch member 530 extends out of the support base 510 toward the positioning hole 212, or is housed within the support base 510. A guide block 540 is fixedly connected to one end of the drive member 520 toward the clutch member 530. The guide block 540 is eccentrically positioned. The clutch member 530 has a guide groove 531. The guide block 540 abuts against the inner wall of the guide groove 531. A spring 550 is also provided inside the support base 510. One end of the spring 550 is fixedly connected to the clutch member 530, and the other end is fixedly connected to the inner wall of the support base 510. The operator rotates the drive component 520, causing the guide block 540 to force the clutch component 530 to slide relative to the support base 510. When the clutch component 530 extends out of the support base 510 and passes through the positioning hole 212 and the limiting hole 221 in sequence, it restricts the rotation of the outer wheel 220. In this state, the motor 300 can drive the transmission mechanism 400 through the reduction mechanism 200. When the clutch component 530 is retracted into the support base 510, the outer wheel 220 rotates relative to the fixed base 210. In this state, the torque of the motor 300 drives the outer wheel 220 to rotate, thus preventing the torque from being transmitted to the transmission mechanism 400, thereby keeping the transmission mechanism 400 stationary.

[0039] Reference Figure 6 The transmission mechanism 400 includes a transmission screw 410 and a moving block 420. Both ends of the transmission screw 410 are rotatably connected to the base 120 through bearings. One end of the transmission screw 410 is fixedly connected to the flange 260. The moving block 420 is threadedly connected to the transmission screw 410. The base 120 is provided with a slide groove 121. The moving block 420 is slidably connected to the slide groove 121 to drive the swing door to move, so as to open or close the swing door.

[0040] The implementation principle of the embodiment is as follows: the operator rotates the drive component 520 with a wrench, the drive component 520 drives the guide block 540 to rotate eccentrically, the guide block 540 forces the clutch component 530 to move telescopically relative to the support seat 510, and during this process, the elastic force of the spring 550 makes the inner wall of the clutch component 530 always abut against the guide block 540.

[0041] When the guide block 540 forces the clutch 530 to move toward the spring 550, the clutch 530 retracts toward the support seat 510 and sequentially disengages from the limiting hole 221 and the positioning hole 212. The outer wheel 220 rotates freely relative to the fixed seat 210. The first reduction gear set 230 and the second reduction gear set 240 drive the outer wheel 220 to rotate during the rotation. The torque of the motor 300 can be transmitted to the outer wheel 220 through the reduction mechanism 200. After the motor 300 is powered on, the transmission mechanism 400 remains stationary.

[0042] When the guide block 540 forces the clutch 530 to move toward the fixed seat 210, the clutch 530 extends out of the support seat 510 and passes through the positioning hole 212 and any of the limiting holes 221 in sequence, thereby restricting the outer wheel 220 from rotating relative to the fixed seat 210. The first reduction gear set 230 and the second reduction gear set 240 can both rotate with the outer wheel 220, and the torque of the motor 300 can be transmitted to the transmission mechanism 400 through the reduction mechanism 200 to control the movement of the transmission mechanism 400.

[0043] With the clutch 530 restricting the rotation of the outer wheel 220, the motor 300 drives the first sun gear 231 to rotate. The first sun gear 231 drives the first planetary gear 232 to rotate relative to the outer wheel 220. The first planetary gear 232 revolves around the first sun gear 231 while rotating on its own axis, and transmits the torque of the first sun gear 231 to the second sun gear 241 through the planetary disk 250. The rotational speed of the second sun gear 241 is less than that of the first sun gear 231, and the torque of the second sun gear 241 is greater than that of the first sun gear 231. The second planetary gear 242 revolves around the second sun gear 241 while rotating on its own axis, and transmits the torque of the second sun gear 241 to the transmission screw 410 through the flange 260, thereby achieving two-stage speed reduction and increasing the torque of the transmission screw 410.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A short-stroke swing gate operator, characterized in that: The system includes a motor (300), a reduction mechanism (200), and a transmission mechanism (400). The reduction mechanism (200) includes a first reduction gear set (230), a planetary disk (250), and a second reduction gear set (240). The output end of the motor (300) is connected to the output end of the first reduction gear set (230). The output end of the first reduction gear set (230) is rotatably connected to the planetary disk (250). The rotation center of the planetary disk (250) is fixedly connected to the input end of the second reduction gear set (240). The output end of the second reduction gear set (240) is connected to the input end of the transmission mechanism (400). The rotation axis of the first reduction gear set (230), the rotation axis of the planetary disk (250), and the rotation axis of the second reduction gear set (240) are coaxial. The deceleration mechanism (200) is provided with a clutch mechanism (500) on its side. The deceleration mechanism (200) includes an outer wheel (220). The first deceleration gear set (230) and the second deceleration gear set (240) are both meshed with the inner wall of the outer wheel (220). The outer wheel (220) has a plurality of limiting holes (221) on its end face facing the clutch mechanism (500). The clutch mechanism (500) extends and retracts toward the end face of the outer wheel (220). The clutch mechanism (500) is inserted into any of the limiting holes (221) to limit the rotation of the outer wheel (220). The first reduction gear set (230) includes a first sun gear (231) and a plurality of first planetary gears (232). The first sun gear (231) is fixedly connected to the output shaft of the motor (300). The plurality of first planetary gears (232) are all meshed with the circumferential direction of the first sun gear (231), and the plurality of first planetary gears (232) are all rotatably connected to the planetary disk (250). The second reduction gear set (240) includes a second sun gear (241) and a plurality of second planetary gears (242). One end of the second sun gear (241) is connected to the rotation center of the planetary disk (250) and rotates synchronously, and the other end is rotatably connected to the rotation center of the flange (260). The plurality of second planetary gears (242) are all meshed with the second sun gear (241) in the circumferential direction, and the plurality of second planetary gears (242) are all rotatably connected to the flange (260). The flange (260) is connected to the input end of the transmission mechanism (400). The clutch mechanism (500) includes a support base (510) and a clutch element (530). The support base (510) is disposed between the motor (300) and the reduction mechanism (200). The clutch element (530) is slidably connected to the support base (510). A portion of the clutch element (530) extends out of the support base (510) and passes through any limiting hole (221). The clutch mechanism (500) further includes a drive member (520) and a spring (550). The drive member (520) is rotatably connected to the support base (510). A guide block (540) is fixedly connected to the end face of the drive member (520) facing the clutch member (530). The clutch member (530) has a guide groove (531). The guide block (540) abuts against the inner wall of the guide groove (531). One end of the spring (550) is fixedly connected to the clutch member (530), and the other end is fixedly connected to the support base (510).

2. The short-stroke swing gate operator according to claim 1, characterized in that: A guide rod (270) is provided between the first reduction gear set (230) and the second reduction gear set (240). The guide rod (270) is rotatably connected to the first sun gear (231), the second sun gear (241) and the flange (260) in sequence. The first sun gear (231), the second sun gear (241) and the flange (260) rotate independently on the same rotating shaft.

3. The short-stroke swing gate operator according to claim 1, characterized in that: The transmission mechanism (400) is provided with a housing mechanism (100). The transmission mechanism (400) includes a transmission screw (410) and a moving block (420). Both ends of the transmission screw (410) are rotatably connected to the base (120) through bearings. One end of the transmission screw (410) is fixedly connected to the flange (260). The moving block (420) is threadedly connected to the transmission screw (410) and is slidably connected to the slide groove (121) to drive the swing door to move.

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