A new door opener

Abstract

This invention relates to a door opener, comprising a motor, a reducer, a motor support frame, and a traveling support frame. The reducer is disposed within the motor support frame, and the motor is fixed to the motor support frame and connected to the input end of the reducer. The output end of the reducer is driven by a main drive shaft, and both ends of the main drive shaft are driven by torque limiters. The torque limiters are driven by a connecting rod gear set via friction discs. The traveling support frame is movably disposed below the motor support frame via an elastic frame assembly. A drive wheel is disposed below the traveling support frame, and a drive shaft is fixed to the drive wheel. Both ends of the drive shaft are fixed to the connecting rod gear set.

Description

Technical Field

[0001] This invention relates to the field of door opener technology, and in particular to a door opener. Background Technology

[0002] With urbanization, commercial development, and the increasing demand for safe, convenient, and intelligent living experiences, automatic door control systems are gradually becoming standard equipment in modern buildings. China's door automation market has maintained steady growth for many years, especially in commercial complexes, high-end office buildings, transportation hubs, and smart homes, where market demand is strong. However, many door opener products on the market currently suffer from problems such as high operating noise, insufficient stability, and inadequate after-sales service. For example, uneven ground can cause rollers to jam or detach from the ground, or foreign objects such as gravel can obstruct the flow, hindering rapid response and affecting the smoothness of operation. These issues fail to fully meet users' expectations for high-quality, intelligent door control solutions. Summary of the Invention

[0003] The purpose of this invention is to provide a gate opener that can ensure smooth and stable operation without detaching from the ground when encountering uneven road surfaces.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a door opener comprising a motor, a reducer, a motor support frame, and a walking support frame. The reducer is disposed within the motor support frame, the motor is fixed to the motor support frame and connected to the input end of the reducer, the output end of the reducer is connected to a main drive shaft, both ends of the main drive shaft are connected to torque limiters, the torque limiters are connected to a linkage gear set via friction discs, the walking support frame is movably disposed below the motor support frame via an elastic frame assembly, a drive wheel is disposed below the walking support frame, a drive shaft is fixed to the drive wheel, both ends of the drive shaft are fixed to the linkage gear set, the motor support frame is a frame structure, a fixing column is disposed at the lower end of the motor support frame, and a buffer rubber pad is disposed on the fixing column.

[0005] Furthermore, the walking support frame includes a curved plate, a base plate, fastening bolts, and bearing seats. One end of the fastening bolt is fixed at the four corners of the base plate. The bearing seats are located on the left and right sides of the drive wheel and are movably connected to the drive shaft. The other end of the fastening bolt is fixed to the bearing seats. The curved plate is a Z-shaped plate and is fixed to the base plate. The base plate has slots that match the upper part of the curved plate.

[0006] Furthermore, the connecting rod gear set includes a main gear, a follower gear, an upper connecting rod, a lower connecting rod, and a driven gear. The main gear is mounted on the torque limiter via the friction disc. The follower gear meshes with the main gear. The driven gear is fixed on the drive shaft and meshes with the follower gear. One end of the upper connecting rod is located inside the torque limiter and is movably connected to the main drive shaft via a first retaining ring. The other end of the upper connecting rod is movably connected to the follower gear via a fixing pin and a second retaining ring. One end of the lower connecting rod is movably connected to the fixing pin, and the other end of the lower connecting rod is movably connected to the drive shaft via a locking retaining ring.

[0007] Furthermore, the elastic frame assembly includes a front support side plate, a front support slide rod, a rear support slide rod, and a rear support side plate. The front support side plate is fixed to the front side of the motor support bracket via a front support base plate. The front support side plate has a first placement groove for placing a first linear slider, which is fixed within the first placement groove. One end of the front support slide rod is fixed to the traveling support frame and fitted with a front support spring. The other end of the front support slide rod passes through the first placement groove and slides within the first linear slider via a first linear bearing. The rear support side plate is fixed to the rear side of the motor support bracket via a rear support base plate. The rear support side plate has a second placement groove in which a second linear slider is placed. Multiple sets of locking holes for fixing the second linear slider are provided on both sides of the second placement groove. One end of the rear support slide rod is fixed to the traveling support frame. The support frame is fitted with a rear support spring. The other end of the rear support slide rod passes through the second placement groove and slides within the second linear slider via a second linear bearing. A first sliding groove is provided on the front support side plate, and a first linear slider is provided within the first sliding groove. One end of the front support slide rod is fixed to the walking support frame and fitted with a front support spring. The other end of the front support slide rod extends into the first sliding groove and slides within a sliding opening on the first linear slider. The rear support side plate is fixed to the rear side of the motor support bracket via a rear support base plate. A second sliding groove is provided on the rear support side plate, and a second linear slider is provided within the second sliding groove. One end of the rear support slide rod is fixed to the walking support frame and fitted with a rear support spring. The other end of the rear support slide rod passes through the second sliding groove and slides within a sliding opening on the second linear slider.

[0008] Furthermore, the bearing housing is a P-type vertical bearing housing.

[0009] Furthermore, the motor is a Hall effect brushless motor, and the reducer is an NMRV worm gear reducer.

[0010] Furthermore, the fastening bolt is fitted with a sleeve.

[0011] Furthermore, both the end of the front support slide rod extending out of the first sliding groove and the end of the rear support slide rod extending out of the second sliding groove are provided with limit plates.

[0012] A method of using a door opener, the method comprising the following steps: Step S1. Install the door opener on the door body, start the motor, and the motor drives the drive wheel to roll through the reducer and connecting rod gear set; Step S2: When an obstacle appears, the drive wheel is lifted, and the connecting rod and gear set bends back to retract the wheel and move forward over the obstacle. Step S3: When the road surface is sunken, the connecting rod gear set releases the drive wheel to ensure that the drive wheel is in contact with the road surface and continues to move forward.

[0013] The beneficial effects of this invention are as follows: The drive motor rotates, and the power is transmitted to the reducer. Then, through the main drive shaft, the power and rotation are transmitted to the torque limiter. The torque limiter moves synchronously with the main gear through the friction force generated by the friction disc, and then the power is transmitted to the traveling wheels via the connecting rod and gear set. When encountering uneven road surfaces, the main gear, follower gear, and driven gear in the connecting rod and gear set, under the hinged action of the upper and lower connecting rods, ensure both the continuity of gear meshing and a certain degree of angular extension / retraction distance variation. Under the action of the elastic frame assembly, the traveling support frame can move up and down within a certain range, offsetting vibrations during operation. This ensures that the gate opener operates smoothly and stably on uneven road surfaces and does not detach from the ground. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 These are the front view and side view of the present invention; Figure 3 This is a side view structural schematic diagram of the motor of the present invention; Figure 4 This is a schematic diagram of the main drive shaft for the upper and lower connecting rods; Figure 5 The diagram shows the structure of the first and second linear sliders, and the side and front views of the main gear. Figure 6 This is a schematic diagram of the connecting rod and gear set. Figure 7 This is a schematic diagram of the motion of the upper and lower connecting rods; Detailed Implementation

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Please refer to Figures 1 to 7. This invention provides an embodiment: a door opener comprising a motor, a reducer, a motor support frame, and a walking support frame. The reducer is disposed within the motor support frame. The motor is fixed to the motor support frame and connected to the input end of the reducer. The output end of the reducer is connected to a main drive shaft. Both ends of the main drive shaft are connected to torque limiters. The torque limiters are connected to a connecting gear set via friction discs. The walking support frame is movably disposed below the motor support frame via an elastic frame assembly. A drive wheel is disposed below the walking support frame, and a drive shaft is fixed to the drive wheel. Both ends of the drive shaft are fixed to the connecting gear set. When the drive motor rotates, power is transmitted to the reducer, and then through the main drive shaft, the power and rotation are transmitted to the torque limiter. The torque limiter moves synchronously through the friction force generated between the friction disc and the main gear, and then through the connecting gear set to the walking wheel. The motor support frame is a frame structure, and a fixed column is disposed at the lower end of the motor support frame. A buffer pad is disposed on the fixed column. When encountering uneven road surfaces, the main gear, follower gear, and driven gear in the linkage gear set, through the hinged action of the upper and lower connecting rods, ensure both continuous gear meshing and a certain degree of angular extension / retraction distance variation. The traveling support frame, under the action of the elastic frame assembly, can move up and down within a certain range to counteract vibrations during operation. This ensures smooth and stable operation of the gate operator on uneven surfaces, preventing it from detaching from the ground. The buffer pads prevent collisions between the motor support frame and the traveling support frame.

[0017] Please continue reading Figure 4 , Figure 5 As shown, in one embodiment of the present invention, the walking support frame includes a curved plate, a base plate, fastening bolts, and bearing seats. One end of each fastening bolt is fixed to one of the four corners of the base plate. The bearing seats are located on the left and right sides of the drive wheel and are movably connected to the drive shaft. The other end of each fastening bolt is fixed to the bearing seat. The curved plate is a U-shaped plate and is fixed to the base plate. The base plate has slots that match the upper part of the curved plate. The fastening bolts at the two left corners of the base plate are fixed to the bearing seats on the left side, and the fastening bolts at the two right corners of the base plate are fixed to the bearing seats on the right side. The curved plate is used to connect the bearing seats and fix the elastic frame assembly.

[0018] Please refer to Figures 1, 2, 6, and 7. In one embodiment of the present invention, the connecting rod gear set includes a main gear, a follower gear, an upper connecting rod, a lower connecting rod, and a driven gear. The main gear is mounted on the torque limiter via the friction disc. The follower gear meshes with the main gear. The driven gear is fixed on the drive shaft and meshes with the follower gear. One end of the upper connecting rod is located inside the torque limiter and is movably connected to the main drive shaft via a first retaining ring. The other end of the upper connecting rod is movably connected to the follower gear via a fixing pin and a second retaining ring. One end of the lower connecting rod is movably connected to the fixing pin, and the other end of the lower connecting rod is movably connected to the drive shaft via a locking retaining ring. The main gear, follower gear, and driven gear constitute a gear set, forming a two-stage transmission that transmits power and motion to the output shaft. The main gear is connected to the input shaft of the reducer via a friction torque limiter, enabling mechanical overload protection, as shown in Figure 7. The follower gear is installed at point B on the connecting rod, maintaining meshing with both the main gear and the follower gear as the connecting rod moves. The upper and lower connecting rods form a flexible frame. The upper connecting rod moves in a circular rotation around point O, while the lower connecting rod moves in a compound motion. Point B of the lower connecting rod rotates in a circular motion with the upper connecting rod, while point A of the lower connecting rod moves linearly, allowing the gear to perform both meshing and extension / retraction motions. The gear is connected to the drive and rotates synchronously with the drive wheel.

[0019] Please continue reading Figure 1 , Figure 4 , Figure 5As shown, in one embodiment of the present invention, the elastic frame assembly includes a front support side plate, a front support slide rod, a rear support slide rod, and a rear support side plate. The front support side plate is fixed to the front side of the motor support bracket via a front support base plate. A first placement groove for placing a first linear slider is provided on the front support side plate, and the first linear slider is fixed within the first placement groove. One end of the front support slide rod is fixed to the traveling support frame and fitted with a front support spring. The other end of the front support slide rod passes through the first placement groove and slides within the first linear slider via a first linear bearing. The rear support side plate is fixed to the rear side of the motor support bracket via a rear support base plate. A second placement groove is provided on the rear support side plate, and a second linear slider is placed within the second placement groove. Multiple sets of locking holes for fixing the second linear slider are provided on both sides of the second placement groove. One end of the rear support slide rod is fixed within the first placement groove. The walking support frame is fitted with a rear support spring. The other end of the rear support slide rod passes through the second placement groove and slides within the second linear slider via a second linear bearing. A first sliding groove is provided on the front support side plate, and a first linear slider is provided within the first sliding groove. One end of the front support slide rod is fixed to the walking support frame and fitted with a front support spring. The other end of the front support slide rod extends into the first sliding groove and slides within a sliding opening on the first linear slider. The rear support side plate is fixed to the rear side of the motor support bracket via a rear support base plate. A second sliding groove is provided on the rear support side plate, and a second linear slider is provided within the second sliding groove. One end of the rear support slide rod is fixed to the walking support frame and fitted with a rear support spring. The other end of the rear support slide rod passes through the second sliding groove and slides within a sliding opening on the second linear slider. The curved plate and the base plate are connected by bolts and fixed together with the front support slide rod and the rear support slide rod. They are assembled with the front support side plate and the rear support side plate through the front support spring and the rear support spring. Under the action of the spring, the front support slide rod and the rear support slide rod can slide within the first linear slider and the second linear slider to achieve up and down elastic telescopic movement.

[0020] Please continue reading Figure 4 , Figure 5 As shown, in one embodiment of the present invention, the bearing housing is a P-type vertical bearing housing.

[0021] Please continue reading Figures 1 to 5 As shown, in one embodiment of the present invention, the motor is a Hall brushless motor and the reducer is an NMRV worm gear reducer.

[0022] Please continue reading Figure 4 , Figure 5As shown, in one embodiment of the present invention, the fastening bolt is fitted with a sleeve.

[0023] Please continue reading Figure 5 As shown, in one embodiment of the present invention, a limiting plate is provided at one end of the front support slide rod extending out of the first sliding groove and at one end of the rear support slide rod extending out of the second sliding groove. The limiting plate can limit the rear support slide rod and the front support slide rod, preventing the rear support slide rod and the front support slide rod from detaching from the first sliding groove and the second sliding groove.

[0024] Please see Figures 1 to 7 The present invention provides an embodiment: a method for using a door opener, the method comprising the following steps: Step S1. Install the door opener on the door body, start the motor, and the motor drives the drive wheel to roll through the reducer and connecting rod gear set; Step S2: When an obstacle appears, the drive wheel is lifted, and the connecting rod and gear set bends back to retract the wheel and move forward over the obstacle. Step S3: When the road surface is sunken, the connecting rod gear set releases the drive wheel to ensure that the drive wheel is in contact with the road surface and continues to move forward.

[0025] This invention operates on the following principle: the drive motor rotates, transmitting power to the reducer, and then through the main drive shaft to the torque limiter. The torque limiter moves synchronously with the main gear via friction between the friction disc and the main gear, and then the power is transmitted to the traveling wheels via the connecting rod gear set. When encountering uneven road surfaces, the main gear, follower gear, and driven gear in the connecting rod gear set, under the hinged action of the upper and lower connecting rods, ensure both continuous gear meshing and a certain degree of angular extension / retraction distance variation. Under the action of the elastic frame assembly, the traveling support frame can move up and down within a certain range, offsetting vibrations during operation. This ensures smooth and stable operation of the gate opener, preventing it from detaching from the ground, even on uneven road surfaces.

[0026] The above description is only a preferred embodiment of the present invention and should not be construed as a limitation of this application. All equivalent changes and modifications made in accordance with the scope of the patent application of the present invention should be covered by the present invention.

Claims

1. A door opener, characterized in that: The system comprises a motor, a reducer, a motor support frame, and a traveling support frame. The reducer is housed within the motor support frame. The motor is fixed to the motor support frame and connected to the input end of the reducer. The output end of the reducer is connected to a main drive shaft. Both ends of the main drive shaft are connected to torque limiters. The torque limiters are connected to a connecting rod gear set via friction discs. The traveling support frame is movably mounted below the motor support frame via an elastic frame assembly. A drive wheel is located below the traveling support frame, and a drive shaft is fixed to the drive wheel. Both ends of the drive shaft are fixed to the connecting rod gear set. The motor support frame has a frame-type structure, and a fixing column is located at the lower end of the motor support frame. A buffer pad is provided on the fixing column.

2. A door opener according to claim 1, characterized in that: The walking support frame includes a curved plate, a base plate, fastening bolts, and bearing seats. One end of the fastening bolt is fixed at the four corners of the base plate. The bearing seats are located on the left and right sides of the drive wheel and are movably connected to the drive shaft. The other end of the fastening bolt is fixed to the bearing seats. The curved plate is a Z-shaped plate and is fixed to the base plate. The base plate has slots that match the upper part of the curved plate.

3. A door opener according to claim 1, characterized in that: The linkage gear set includes a main gear, a follower gear, an upper connecting rod, a lower connecting rod, and a driven gear. The main gear is mounted on the torque limiter via the friction disc. The follower gear meshes with the main gear. The driven gear is fixed on the drive shaft and meshes with the follower gear. One end of the upper connecting rod is located inside the torque limiter and is movably connected to the main drive shaft via a first retaining ring. The other end of the upper connecting rod is movably connected to the follower gear via a fixing pin and a second retaining ring. One end of the lower connecting rod is movably connected to the fixing pin, and the other end of the lower connecting rod is movably connected to the drive shaft via a locking retaining ring.

4. A door opener according to claim 1, characterized in that: The elastic frame assembly includes a front support side plate, a front support slide rod, a rear support slide rod, and a rear support side plate. The front support side plate is fixed to the front side of the motor support bracket via a front support base plate. A first sliding groove for placing a first linear slider is provided on the front support side plate. The first linear slider is fixed within the first sliding groove, and a first linear slider is disposed within the first sliding groove. One end of the front support slide rod is fixed to the traveling support frame and fitted with a front support spring. The other end of the front support slide rod extends through the first sliding groove and into a sliding opening on the first linear slider, passing through a first linear bearing. The first linear slider slides within the first linear slider. The rear support side plate is fixed to the rear side of the motor support bracket via the rear support base plate. The rear support side plate has a second placement sliding groove, in which the second linear slider is placed. The second placement groove has multiple sets of locking holes on both sides for fixing the second linear slider. One end of the rear support slide rod is fixed to the walking support frame and fitted with a rear support spring. The other end of the rear support slide rod passes through the second placement sliding groove and slides within the second linear slider via a second linear bearing, sliding within a sliding opening on the second linear slider.

5. A door opener according to claim 1, characterized in that: The bearing housing is a P-type vertical bearing housing.

6. A door opener according to claim 1, characterized in that: The motor is a Hall effect brushless motor, and the reducer is an NMRV worm gear reducer.

7. A door opener according to claim 2, characterized in that: The fastening bolt is fitted with a sleeve.

8. A door opener according to claim 4, characterized in that: Limiting plates are provided at one end of the front support slide rod extending out of the first sliding groove and at one end of the rear support slide rod extending out of the second sliding groove.

9. A method of using the door opener as described in claim 1, characterized in that: The method includes the following steps: Step S1. Install the door opener on the door body, start the motor, and the motor drives the drive wheel to roll through the reducer and connecting rod gear set; Step S2: When an obstacle appears, the drive wheel is lifted, and the connecting rod and gear set bends back to retract the wheel and move forward over the obstacle. Step S3: When the road surface is sunken, the connecting rod gear set releases the drive wheel to ensure that the drive wheel is in contact with the road surface and continues to move forward.

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