A manual clutch transmission device for a sliding door opener

Abstract

This invention discloses a manual clutch transmission device for a sliding door operator, belonging to the field of electric sliding door transmission technology. The device includes a reducer, a reducer output shaft, a drive gear, a rack, a separable optical shaft fixing ring, anti-theft fastening screws, and a matching anti-theft screw wrench and key. The drive gear is slidably mounted on the reducer output shaft and can slide axially along the output shaft. The separable optical shaft fixing ring is locked to the end of the output shaft by the anti-theft fastening screws, achieving axial limitation of the drive gear. During normal operation, the drive gear and rack maintain meshing transmission, realizing electric opening and closing of the door. In the event of a power outage or emergency, the anti-theft fastening screws are removed using the anti-theft screw wrench and key, and the separable optical shaft fixing ring is removed, releasing the axial limitation of the drive gear. This allows the drive gear to slide axially away from the rack, cutting off the transmission power, overcoming the mechanical self-locking characteristic of the reducer, and enabling the door to be freely pushed and pulled manually. This invention features a simple structure, few parts, and convenient assembly and maintenance. It transmits torque through a flat key sliding structure, has strong impact resistance, and is not prone to slippage. The shaft undergoes anti-corrosion and heat-strengthening treatment, making it suitable for outdoor use. The overall structure is compact and can be directly adapted to modify existing sliding door integrated machines.

Description

Technical Field

[0001] This invention relates to the field of electric sliding door transmission technology, specifically to a manual clutch transmission device for sliding doors. Background Technology

[0002] The reducer-type sliding door operator has a mechanical self-locking feature. In the event of a power outage, malfunction, or maintenance, the reducer structure locks, and the door cannot be manually pushed, which poses problems for emergency passage and equipment maintenance.

[0003] Currently, the manual clutch structures of sliding door operators on the market are mainly divided into two categories. One type is the toothed sliding gear clutch, which suffers from rapid wear of the end face teeth after long-term exposure to the impact loads of the door's forward and reverse rotation. Re-engaging requires repeated shaking of the door body, making operation inconvenient and resulting in a short service life. The other type is the sliding spline shaft clutch structure, but existing mature structures are all under patent protection, and direct imitation carries a high risk of patent infringement. Existing clutch devices generally suffer from drawbacks such as cumbersome assembly, slippage during operation, manual switching jamming, poor impact resistance, and short service life. Therefore, there is an urgent need to design a novel, easy-to-assemble, wear-resistant, reliable, and patent-barrier-avoiding manual clutch transmission device for sliding door operators. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a manual clutch transmission device for a sliding door opener. It solves the problems of traditional reducer door openers being unable to be manually opened due to power failure and the existing clutches being prone to wear, slippage, inconvenience in operation, and patent infringement risks. The invention achieves the effects of rapid disengagement when power is off, stable transmission when power is on, durability for outdoor use, and strong versatility for modification.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a manual clutch transmission device for a sliding door opening machine, comprising a reducer output shaft, a drive gear, a clutch sliding assembly, a separable optical shaft fixing ring, an anti-theft fastening screw, and an anti-theft screw wrench key;

[0006] The drive gear is mounted on the outside of the reducer output shaft, and the clutch sliding assembly is disposed between the reducer output shaft and the drive gear, so that the drive gear can slide axially along the reducer output shaft and synchronously transmit circumferentially.

[0007] The separable optical shaft retaining ring is locked onto the end of the reducer output shaft by anti-theft fastening screws, forming an axial limit on the drive gear; the anti-theft fastening screws and the separable optical shaft retaining ring can be removed and installed by using the matching anti-theft screw wrench and key to release the axial limit on the drive gear;

[0008] The drive gear meshes with the rack of the sliding door to achieve power transmission and clutch switching.

[0009] Furthermore, the clutch sliding assembly adopts a keyway and flat key sliding fit structure. The drive gear fits with the reducer output shaft through the flat key, which can both transmit torque by rotating synchronously with the output shaft in the circumferential direction and slide along the output shaft in the axial direction to realize clutch switching.

[0010] Furthermore, the axial sliding stroke of the drive gear on the output shaft of the reducer is greater than the tooth width of the drive gear, ensuring that the drive gear can completely disengage from the rack after sliding, thus completely cutting off the power transmission.

[0011] Furthermore, the output shaft and drive gear of the reducer are both made of 45# carbon alloy steel. The mating surface of the output shaft is tempered or high-frequency quenched and strengthened. The surface of the output shaft is provided with an anti-corrosion coating to effectively prevent rust and jamming in outdoor humid environments and ensure smooth sliding.

[0012] Furthermore, a shaft retaining ring is mounted on the output shaft of the reducer. The shaft retaining ring is located on the side of the drive gear away from the housing to limit the inner sliding stroke of the drive gear, prevent excessive gear slippage, and improve structural stability.

[0013] The present invention has the following advantages over the prior art:

[0014] 1. This invention adopts a limit clutch structure with anti-theft screws and a separable optical axis fixing ring. It has fewer parts, a simple structure, low production cost, and is convenient for assembly and subsequent maintenance. In case of power failure, the fixing ring can be quickly disassembled and the gear sliding stroke can be released with a special wrench, making it easy to manually open the door. The emergency operation is simple and efficient.

[0015] 2. The flat key sliding transmission structure has a large torque transmission contact area, which can withstand the impact load of frequent forward and reverse rotation of the sliding door. The transmission is stable and not easy to slip, effectively solving the problems of insufficient torque and easy failure of traditional friction clutches.

[0016] 3. The overall structural layout of this invention differs from the mainstream eccentric push rod clutch and integral spline sliding clutch structures on the market. The novel structural design can effectively circumvent existing patent barriers and reduce the risk of infringement in production and use.

[0017] 4. The output shaft is made of alloy steel with heat treatment and anti-corrosion coating, which is suitable for outdoor humid conditions such as courtyard gates and industrial sliding doors. It is rust-resistant, wear-resistant and has a longer service life.

[0018] 5. The gear sliding stroke is reasonably designed, and the mechanical self-locking torque of the reducer can be completely cut off after disengagement, making it easy and effortless to manually push and pull the door; the overall structure is compact and can be directly adapted to the modification of existing reducer-type sliding door integrated machines, with strong versatility and low modification cost. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Label Explanation:

[0021] 1-Separable optical shaft retaining ring; 2-Gear; 3-Rack; 4-Reducer output shaft; 5-Anti-theft fastening screw; 6-Automatic door reducer motor housing; 7-Anti-theft clutch screw wrench key; 8-Shaft retaining ring.

[0022] Normal electric working state: The split type optical shaft fixing ring (1) is locked and fixed at the end of the reducer output shaft, forming an outer axial limit on the gear (2); the gear (2) and the rack (3) maintain a stable meshing state, and the motor power is transmitted to the rack through the reducer, the reducer output shaft, and the gear, driving the sliding door to open and close normally. The transmission is stable and there is no slippage or loosening.

[0023] Emergency clutch state during power outage: When the equipment is powered off or malfunctions, use the anti-theft clutch wrench key (7) to unscrew the anti-theft fastening screw (5), remove the split optical shaft fixing ring (1), and release the inner axial limit of the gear (2); slide the gear (2) inward along the output shaft of the reducer, so that the gear (2) and the rack (3) are completely disengaged, the power transmission chain is completely cut off, and the mechanical self-locking constraint of the reducer is released. At this time, the door can be pushed and pulled freely by hand to meet the needs of emergency passage and equipment maintenance.

[0024] To restore the electric working state: Manually move the gear (2) outward along the output shaft of the reducer so that the gear (2) and the rack (3) re-mesh precisely; assemble the reset separation type optical shaft fixing ring (1) and tighten the anti-theft fastening screw (5), and use the outer shaft retaining ring (8) for bidirectional limiting to fix the working position of the gear, re-establish stable torque transmission, and restore the electric opening and closing function of the equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall assembly of the present invention;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of the meshing state of the present invention;

[0027] Figure 3 This is a schematic cross-sectional view of the disassembled state of the present invention.

Claims

1. A manual clutch transmission device for a sliding door opening mechanism, characterized in that: Includes a speed reducer, speed reducer housing, speed reducer output shaft, drive gear, rack, split optical shaft retaining ring, anti-theft fastening screws, anti-theft screw wrench and key; The output shaft of the reducer is rotatably mounted on the reducer housing, and the drive gear is sleeved on the output shaft of the reducer. The drive gear can slide along the axial direction of the output shaft of the reducer. The split optical shaft fixing ring is installed at the end of the reducer output shaft by anti-theft fastening screws, forming an outward axial limit on the drive gear; under normal conditions, the drive gear and rack mesh with each other to transmit power. Use an anti-theft screw wrench and key to unscrew the anti-theft fastening screws, remove the split optical shaft retaining ring, release the axial limit of the drive gear, and the drive gear can move axially along the output shaft of the reducer, causing the drive gear to disengage from the rack and cut off the power transmission.

2. The manual clutch transmission device for the sliding door opening machine according to claim 1, characterized in that: The drive gear and the reducer output shaft are connected by a keyed sliding fit, so that the drive gear can both rotate circumferentially with the reducer output shaft and slide axially along the reducer output shaft.

3. The manual clutch transmission device for the sliding door opening mechanism according to claim 1, characterized in that: The axial sliding stroke of the drive gear on the output shaft of the reducer is greater than the tooth width of the drive gear, ensuring that the drive gear can be completely disengaged from the rack.

4. The manual clutch transmission device for the sliding door opening machine according to claim 1, characterized in that: The output shaft and drive gear of the reducer are made of 45# carbon alloy steel. The mating surface of the output shaft is heat-treated or high-frequency quenched, and the surface of the output shaft is coated with an anti-corrosion coating.

5. The manual clutch transmission device for a sliding door opening machine according to claim 1, characterized in that: The output shaft of the reducer is also provided with a shaft retaining ring, which is located on the side of the drive gear near the reducer housing to limit the inward sliding stroke of the drive gear.

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