Differential rotating device

Abstract

A differential rotating device belongs to transmission devices and is characterized in that a rotating shaft is mounted in a shell of the differential rotating device, an input tooth is mounted at one end of the rotating shaft, the input tooth is meshed with a worm, the worm is in interference fit with a motor shaft, a motor is fixed to the shell, a broken gear is fixed to the shell, a screw is axially arranged on the broken gear, and the broken gear is meshed with the screw. The screw rod is meshed with the full gear, the output gear is fixed to the shell, and the broken gear is meshed with the output gear. The transmission mechanism has the advantages that differential rotation is achieved through broken tooth transmission, one motor can control a plurality of devices at the same time, cost is reduced, meanwhile, overall noise of products is reduced, and transmission of larger torque of the transmission mechanism is achieved in the mode of adjusting the number of teeth of the gears and adjusting the reduction ratio.

Description

Technical Field

[0001] The invention belongs to the field of transmission devices, and in particular relates to a differential rotation device. Background Art

[0002] At present, similar to the shutter mechanism, such as: shutter billboards, if you want the shutter to work in multiple dimensions, or multiple units to move together, the current solution is: equip each dimension or each unit with a motor and a set of transmission. The defects of this method are: the number of motors used is large, although the control accuracy is high and the blades can be turned in more ways, but it takes up a lot of space, increases the cost of the product, and increases the noise of the product. These problems directly affect the user's acceptance and product experience. Summary of the invention

[0003] The object of the present invention is to overcome the above-mentioned defects and provide a differential rotation device that uses fewer components to complete multi-unit, multi-dimensional joint motion, thereby reducing product costs, reducing product noise, and improving product competitiveness.

[0004] The objective of the present invention is achieved through the following technical solutions: a differential rotation device, characterized in that it includes a housing, a rotating shaft, a full gear, a broken gear, a motor, a worm, input teeth and output teeth; the rotating shaft is installed in the housing, one end of the rotating shaft is installed with input teeth, the input teeth are meshed with the worm, the worm is interference fit with the motor shaft, the motor is fixed to the housing, the broken gears are fixed to the housing at intervals in sequence, a screw is provided axially of the broken gear, the screw is meshed with the full gear, the full gear is installed on the rotating shaft at intervals, the output teeth are fixed to the housing at intervals in sequence, the broken gears correspond to the output teeth one by one and mesh with each other.

[0005] The adjacent broken gear and the output teeth meshing with it are provided with 0 。 <n<360 。 angular difference.

[0006] The broken gear has a shape of continuous broken teeth or interval broken teeth.

[0007] A plurality of flat positions are arranged at intervals on the rotating shaft, and the full gears are sequentially mounted on the flat positions.

[0008] The two sides of the flat part are sleeved with retaining springs, and the full gear is clamped on the inner side of the retaining springs.

[0009] A plurality of bearings are spaced apart on the rotating shaft.

[0010] The differential rotation device is composed of several groups.

[0011] The beneficial effects of the present invention are: 1. Use broken gear transmission and the angle difference between adjacent broken gears to achieve differential rotation of multi-dimensional or multi-unit motion. Use one motor to control multiple units at the same time to achieve multi-dimensional and multi-unit joint work, reduce product costs, and at the same time, reduce the overall noise of the product.

[0012] 2. By adjusting the number of teeth and reduction ratio of the gears, the transmission of different torques in different transmission mechanisms can be achieved, which is suitable for a variety of usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention.

[0014] Figure 2 yes Figure 1 Schematic diagram of the side structure.

[0015] Figure 3 It is a schematic diagram of the rotating shaft structure of the present invention.

[0016] Figure 4 It is a schematic diagram of the shell structure of the present invention.

[0017] Figure 5 It is a schematic diagram of the structure of an embodiment of the present invention.

[0018] Figure 6 yes Figure 5 Enlarged view of part A.

[0019] Figure 7 yes Figure 5 Side view of the structure.

[0020] Figure 8 yes Figure 7 Enlarged view of part B.

[0021] Fig. 9 It is a schematic diagram of the full gear and broken gear structure of the present invention.

[0022] Fig.10 yes Fig. 9 Schematic diagram of the top view structure.

[0023] Fig.11 It is a schematic diagram of the broken gear structure of the present invention.

[0024] Fig.12 yes Fig.11 Schematic diagram of the side structure.

[0025] Fig.13 The present invention is a schematic structural diagram of the connection relationship between the motor, the worm, the input gear, the full gear and the broken gear.

[0026] Fig.14 yes Fig.13 Schematic diagram of the side structure.

[0027] Figure 15-18 It is a schematic diagram of the multi-unit and multi-dimensional joint motion mode of the four blades of the present invention.

[0028] in: 1-housing, 2-bearing, 3-motor, 4-full gear, 5-rotating shaft 6-worm, 7-broken gear, 8-input tooth, 9-output tooth, 10-screw, 11-circlip. DETAILED DESCRIPTION

[0029] In order to make the present invention clear and easy to understand, the technical solutions in the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent application.

[0030] Embodiment: As shown in the figure, a differential rotation device is used. Taking the device as an example to drive the blades of the sound protection cover to perform multi-dimensional and multi-unit joint work, two sets of differential rotation devices are installed in the shell 1, including two rotating shafts 5, the two rotating shafts 5 are placed side by side, and input teeth 8 are respectively mounted on the opposite ends of the two rotating shafts 5. The motor 3 is fixed to the shell 1 by screws, and the worm 6 is interference fit with the motor shaft. The input teeth 8 at the end of the rotating shaft 5 are meshed with the worm 6. Each rotating shaft 5 is provided with 10 flat positions 12 spaced in sequence from the input tooth 8 end to the far end, and a full gear 4 is installed on each flat position 12. A retaining spring 11 is installed on the flat positions 12 on both sides of each full gear 4. The retaining spring 11 is used for axial positioning, and the flat position 12 is used to limit the axial movement of the full gear 4 to ensure that the full gear 4 rotates with the rotating shaft 5. Ten broken gears 7 are installed in the shell 1 at intervals, and are fixed to the shell 1 respectively. The 10 broken gears 7 are divided into The broken gears 7 are respectively corresponding to the full gears 4 on the 10 flat positions 12. A screw 10 is coaxially integrated at one end of each broken gear 7. The integrated screw 10 of the broken gear 7 is respectively meshed with the corresponding full gear 4 on the rotating shaft 5. 10 output teeth 9 are fixed at intervals on the housing 1. The 10 output teeth 9 correspond to the 10 broken gears 7 one by one and mesh with each other. There is an angle difference of 10° between the adjacent broken gears 7. After the first broken gear 7 rotates 10°, the second broken gear 7 starts to rotate. The 10 broken gears 7 on a rotating shaft 5 are rotated 180° successively by analogy. Three bearings 2 are spaced apart on the rotating shaft 5. The three bearings 2 are respectively fixedly supported on the bracket. The smooth rotation of the rotating shaft 5 is realized by the bearing 2. The bracket is fixed to the housing 1. The outside of the housing 1 is provided with a threaded hole, which is fixed to the base of the audio by screws. The output teeth 9 are respectively connected and fixed to the blades of the audio protective cover by screws.

[0031] Working principle: When the motor 3 is energized, the motor shaft rotates, transmitting torque to the worm 6. The worm 6 drives the input tooth 8 to rotate through gear meshing. Since the input tooth 8 is installed at the end of the rotating shaft 5, the rotating shaft 5 is driven by the input tooth 8 when it rotates; the full gear 4 on the rotating shaft 5 rotates accordingly, and at the same time drives the screw 10 on the broken gear 7 to rotate. The screw 10 and the broken gear 7 are an integral structure, so the rotation of the worm 6 also drives the broken gear 7 to rotate. Since there is an angle difference between adjacent broken gears 7 when they mesh with the full gear 4, the meshing of the broken gear 7 with the full gear 4 on the rotating shaft 5 has a sequence. After the current broken gear 7 meshing with the rotating shaft 5 rotates a certain angle, the second broken gear 7 meshing with the rotating shaft 5 starts to rotate, and so on. The 10 broken gears 7 rotate in sequence, and finally the effect of the blades rotating in sequence can be presented.

[0032] The following lists only several ways of using the differential rotation device to perform multi-unit, multi-dimensional joint motion, and is not intended to limit other ways of using the differential rotation device to perform multi-unit, multi-dimensional joint motion.

[0033] 1. If Fig.15 As shown, the broken gear 7 on the left rotating shaft 5 farthest from the motor 3 is meshed with its corresponding full gear 5, and the broken gear 7 from the far end of the motor 3 to the broken gear 7 close to the motor 3 is meshed with the corresponding full gear 5 in sequence with an angle difference of 10°, and the broken gear 7 on the right rotating shaft 5 closest to the motor 3 is meshed with the full gear 5, and the broken gear 7 from the near end of the motor 3 to the broken gear 7 far from the motor 3 is meshed with the corresponding full gear 5 in sequence with an angle difference of 10°. First, energize the motor 3 connected to the left rotating shaft 5 to make the motor shaft rotate counterclockwise. At this time, the broken gear 7 at the farthest end of the rotating shaft 5 rotates first. After it rotates 10°, the broken gear 7 adjacent to it starts to rotate, and so on. When the broken gear 7 at the farthest end rotates 180°, at this time, energize the motor 3 connected to the right rotating shaft to make the motor shaft rotate clockwise. The broken gear 7 at the nearest end of the rotating shaft 5 rotates first. After it rotates 10°, the broken gear 7 adjacent to it starts to rotate, and so on. When the broken gear 7 at the nearest end rotates 180°, at this time, the 20 blades are controlled by 2 motors to open to both sides in sequence. By using the angle difference between the broken gears 7, the broken gears 7 on the two rotating shafts are rotated 180° successively, and finally the blades rotate in sequence.

[0034] 2. If Fig.16As shown, the broken gear 7 on the right rotating shaft 5 farthest from the motor 3 is meshed with its corresponding full gear 5, and the broken gear 7 from the farthest end of the motor 3 to the broken gear 7 close to the motor 3 is meshed with the corresponding full gear 5 in sequence with an angle difference of 10°, and the broken gear 7 closest to the motor 3 on the left rotating shaft 5 is meshed with its corresponding full gear 5, and the broken gear 7 from the closest end of the motor 3 on the left rotating shaft 5 to the farthest end is meshed with the full gear 5 in sequence with an angle difference of 10°. First, energize the motor 3 connected to the right rotating shaft to make the motor shaft rotate counterclockwise. At this time, the broken gear 7 at the farthest end of the rotating shaft rotates first. After it rotates 10°, the broken gear 7 adjacent to it starts to rotate, and so on. When the broken gear 7 at the farthest end rotates 180°, at this time, energize the motor 3 connected to the left rotating shaft 5 to make the motor shaft rotate clockwise. The broken gear 7 at the nearest end of the rotating shaft 5 rotates first. After it rotates 10°, the broken gear 7 adjacent to it starts to rotate, and so on. When the broken gear 7 at the nearest end rotates 180°, at this time, the 20 blades are controlled by 2 motors to open sequentially to the middle side. By using the angle difference between the broken gears, the broken gears 7 on the two rotating shafts are rotated 180° successively, and finally the blades rotate sequentially.

[0035] 3. If Fig.17 As shown, the broken gears 7 on the left and right rotating shafts 5 farthest from the motor 3 are meshed with their corresponding full gears 5 respectively, and from the broken gears 7 on the left and right rotating shafts 5 farthest from the motor 3 to the broken gears 7 closest to the motor 3, they are meshed with the corresponding full gears 5 in sequence with an angle difference of 10°. First, energize the motor 3 connected to the left rotating shaft 5 to make the motor shaft rotate counterclockwise. At this time, the broken gear 7 at the farthest end of the rotating shaft 5 rotates first. After it rotates 10°, the broken gear 7 adjacent to it starts to rotate, and so on. When the broken gear 7 at the farthest end rotates 180°, at this time, energize the motor 3 connected to the right rotating shaft to make the motor shaft rotate counterclockwise. The broken gear 7 at the farthest end of the rotating shaft rotates first. After it rotates 10°, the broken gear 7 adjacent to it starts to rotate, and so on. When the broken gear 7 at the farthest end rotates 180°, at this time, the 20 blades are controlled by 2 motors to open to the left in sequence. By using the angle difference between the broken gears, the broken gears 7 on the two rotating shafts are rotated 180° successively, and finally the blades rotate in sequence.

[0036] 4. If Fig.18As shown, the broken gears 7 on the left and right rotating shafts 5 closest to the motor 3 are meshed with their corresponding full gears 5 respectively, and from the broken gears 7 on the left and right rotating shafts 5 closest to the motor 3 to the farthest broken gear 7, they are meshed with the corresponding full gears 5 in sequence with an angle difference of 10°. First, energize the motor 3 connected to the left rotating shaft 5 to make the motor shaft rotate clockwise. At this time, the broken gear 7 at the nearest end of the rotating shaft rotates first. After it rotates 10°, the broken gear 7 adjacent to it starts to rotate, and so on. When the broken gear 7 at the farthest end rotates 180°, at this time, energize the motor 3 connected to the right rotating shaft 5 to make the motor shaft rotate clockwise. The broken gear 7 at the nearest end of the rotating shaft 5 rotates first. After it rotates 10°, the broken gear 7 adjacent to it starts to rotate, and so on. When the broken gear 7 at the farthest end rotates 180°, at this time, the 20 blades are controlled by 2 motors to open to the right in sequence. By using the angle difference between the broken gears, the broken gears 7 on the two rotating shafts are rotated 180° successively, and finally the blades rotate in sequence.

[0037] The above four operating modes are all controlled by 2 motors to control the multi-unit and multi-dimensional joint movement of 20 blades, and all of them use broken gears with 180° continuous broken teeth. The present application can also design multiple sets of differential devices for use in conjunction according to the usage scenarios, and control multiple units through 1 motor to achieve multi-unit and multi-dimensional opening mode. The angle difference between the broken gears is used to make the broken gear 7 rotate successively, and finally the blades rotate in sequence.

[0038] The present application can also adjust the number of teeth of the input teeth, output teeth, full gears, and broken gears, and adjust the reduction ratio, so that the differential rotation device can be suitable for various environments and different scenarios, and realize the transmission of different torques.

[0039] The shape of the broken gear of the present application can be continuous broken teeth or intermittent broken teeth to achieve intermittent motion, continuous motion or simultaneous motion.

[0040] The angle difference between the broken gears of the present application needs to be adjusted accordingly according to the actual interval movement, continuous movement or simultaneous movement.

[0041] The above is an exemplary description of the present invention. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be made by other technicians in this field without expending creative labor falls within the scope of protection of the patent.

Claims

1. A differential rotation device, characterized in that: It includes a shell, a rotating shaft, a full gear, a broken gear, a motor, a worm, an input tooth and an output tooth; the rotating shaft is installed in the shell, one end of the rotating shaft is installed with an input tooth, the input tooth is meshed with the worm, the worm is interference fit with the motor shaft, the motor is fixed to the shell, the broken gear is fixed on the shell at intervals, a screw is provided axially of the broken gear, the screw is meshed with the full gear, the full gear is installed on the rotating shaft at intervals, the output tooth is fixed to the shell at intervals, the broken gear corresponds to the output tooth one by one and meshes with each other.

2. The differential rotation device according to claim 1, characterized in that: The output teeth of the adjacent broken gear meshing with it are provided with 0. <n<360. Angle difference.

3. The differential rotation device according to claim 1, characterized in that: The broken gear has a shape of continuous broken teeth or interval broken teeth.

4. The differential rotation device according to claim 1, characterized in that: A plurality of flat positions are arranged at intervals on the rotating shaft, and the full gears are sequentially mounted on the flat positions.

5. The differential rotation device according to claim 4, characterized in that: The two sides of the flat part are sleeved with retaining springs, and the full gear is clamped on the inner side of the retaining springs.

6. The differential rotation device according to claim 1, characterized in that: A plurality of bearings are spaced apart on the rotating shaft.

7. The differential rotation device according to claim 1, characterized in that: The differential rotation device is composed of several groups.

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