Gear transmission structure that can buffer misalignment

Abstract

The present invention relates to the technical field of gear transmission, and discloses a gear transmission structure capable of buffering misalignment, comprising a first gear, a second gear, a driven gear and a driving motor, wherein an elastic structure is connected between the first gear and the second gear, and the driven gear is meshed with the second gear; the first gear and the second gear are driven to rotate at the same time by the driving motor, and when the driven gear stops rotating, the second gear is separated from the driven gear; the driving motor drives the first gear and the second gear to rotate, and the second gear drives the driven gear to rotate, and when the driven gear cannot continue to rotate, the second gear is separated from the driven gear under the action of the elastic structure, thereby avoiding the transmission structure from being stuck, and the elastic structure plays a certain role in buffering, reducing the wear between the second gear and the driven gear, and after the driving motor stops driving, the second gear is pulled back to its original position under the elastic force of the elastic structure, so that the second gear is meshed with the driven gear again, facilitating preparation for the next rotation.

Description

Technical Field

[0001] The present invention relates to the technical field of gear transmission, and in particular to a gear transmission structure capable of buffering misalignment. Background Art

[0002] A gear drive is a mechanical transmission that uses the meshing teeth of two gears to transmit power and motion. Based on the relative positions of the gear axes, gear drives are categorized as parallel-axis cylindrical gear drives, intersecting-axis bevel gear drives, and staggered-axis helical gear drives. They are characterized by compact structure, high efficiency, and long life. Gear drives are devices that directly transmit motion and power through the teeth of driving and driven gears.

[0003] At present, gear transmission is the most widely used among all mechanical transmissions and can be used to transmit motion and power between any two shafts.

[0004] The characteristics of gear transmission are: smooth gear transmission, precise transmission ratio, reliable operation, high efficiency, long life, and a wide range of power, speed and size. However, when two gears are meshing and rotating, if one of the gears suddenly stops rotating, the gear meshing with it will also be stuck, causing the entire transmission to be unable to work smoothly. Summary of the Invention

[0005] The purpose of the present invention is to provide a gear transmission structure capable of buffering misalignment, aiming to solve the problem in the prior art that ordinary gears have no buffering effect during use.

[0006] The present invention is implemented as follows: a gear transmission structure that can buffer misalignment includes a first gear, a second gear, a driven gear and a drive motor, an elastic structure is connected between the first gear and the second gear, and the driven gear is engaged with the second gear; the first gear and the second gear are driven to rotate simultaneously by the drive motor, and when the driven gear stops rotating, the second gear is separated from the driven gear.

[0007] Furthermore, the gear transmission structure that can buffer misalignment includes a connecting shaft, the first gear and the second gear are respectively connected to one end of the connecting shaft, and the other end of the connecting shaft is connected to the drive motor; along the direction of one end of the connecting shaft, the second gear and the first gear are arranged in sequence.

[0008] Furthermore, one end of the connecting shaft forms an end head, the first gear has a connecting hole, and the first gear is sleeved on the connecting shaft through the connecting hole; the diameter of the end head is larger than the diameter of the connecting hole, and the position of the first gear is fixed.

[0009] Furthermore, the elastic structure includes a tension spring, which is sleeved on the connecting shaft and located between the first gear and the second gear. Two ends of the tension spring are respectively connected to the first gear and the second gear.

[0010] Furthermore, the second gear has a through hole, the second gear is connected to the connecting shaft through the through hole, and the second gear has an elastic part, which is arranged around to form the through hole.

[0011] Furthermore, a guide spring is provided on the connecting shaft, and the guide spring is located on the side of the second gear away from the first gear; when the driven gear stops rotating, the first gear moves toward the guide spring to compress the guide spring.

[0012] Furthermore, a buffer gear is provided on the side of the second gear facing the first gear, and the teeth on the buffer gear are elastic; the number of teeth and module of the buffer gear and the second gear are the same, and each tooth on the buffer gear corresponds one-to-one to each tooth on the second gear.

[0013] Furthermore, the sum of the thicknesses of the second gear and the buffer gear is greater than the thickness of the driven gear.

[0014] Furthermore, a boss is provided on the side of the driven gear facing the first gear, and the boss extends toward the first gear. A baffle is provided on the boss, and the radius of the baffle is greater than the distance from the tooth groove of the driven gear to the center of the driven gear.

[0015] Furthermore, the sum of the thickness of the driven gear and the distance between the blocking piece and the driven gear is less than or equal to the thickness of the second gear.

[0016] Compared with the prior art, the gear transmission structure provided by the present invention can buffer misalignment. The driving motor drives the first gear and the second gear to rotate, and the second gear drives the driven gear to rotate. When the driven gear cannot continue to rotate, the second gear is separated from the driven gear under the action of the elastic structure, thereby avoiding the transmission structure from getting stuck. The elastic structure plays a certain buffering and recovery role, reducing the wear between the second gear and the driven gear. After the driving motor stops driving, the elastic force of the elastic structure pulls the second gear back to its original position, so that the second gear is meshed with the driven gear again, which is convenient for preparing for the next rotation and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 2 is a three-dimensional schematic diagram of a gear transmission structure capable of buffering misalignment provided by an embodiment of the present invention;

[0018] Figure 2 It is a three-dimensional schematic diagram of the second gear provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0022] Reference Figure 1-2 As shown, a preferred embodiment of the present invention is provided.

[0023] The gear transmission structure capable of buffering misalignment provided by the present invention has a good buffering effect on gear transmissions that limit the rotation angle. For example, in a lock body structure, when the lock is opened or closed, it is necessary to control the movement of the lock tongue through the gear transmission movement. The lock tongue only needs to move back and forth within a fixed range. In other words, the gear that controls the movement of the lock tongue within this fixed range only needs to rotate forward or reverse by a certain angle to achieve the unlocking and locking of the lock tongue.

[0024] The gear transmission structure capable of buffering misalignment includes a first gear 3, a second gear 2, a driven gear 4 and a driving motor. The first gear 3 and the second gear 2 are coaxially connected through a connecting shaft 1, and the driven gear 4 is meshed with the second gear 2. The first gear 3 and the second gear 2 are arranged separately, and an elastic structure is connected between the first gear 3 and the second gear 2. The driving motor drives the first gear 3 and the second gear 2 to rotate at the same time, and the driven gear 4 is driven to rotate by the second gear 2. When the structure connected to the driven gear 4 has no rotation space, the driven gear 4 stops rotating. The elastic structure includes a tension spring 10. Under the action of the tension spring 10, the second gear 2 moves in a direction away from the first gear 3 and separates from the driven gear 4 to prevent the gear transmission structure from getting stuck. When the motor stops driving, the second gear 2 rebounds to its original position under the action of the tension spring 10 and meshes with the driven gear 4, waiting for the next time the motor drives the first gear 3 and the second gear 2 to reverse. If used as a switch lock, this type of rotation method is safer.

[0025] The above-mentioned gear transmission structure that can buffer misalignment is provided. The driving motor drives the first gear 3 and the second gear 2 to rotate, and the second gear 2 drives the driven gear 4 to rotate. When the driven gear 4 cannot continue to rotate, under the action of the elastic structure, the second gear 2 is separated from the driven gear 4, thereby avoiding the transmission structure from getting stuck. The elastic structure plays a certain buffering and recovery role, reducing the wear between the second gear 2 and the driven gear 4. After the driving motor stops driving, under the action of the elastic force of the elastic structure, the second gear 2 is pulled back to its original position, so that the second gear 2 is meshed with the driven gear 4 again, which is convenient for preparing for the next rotation and has high safety.

[0026] Along the direction of one end of the connecting shaft 1, the second gear 2 and the first gear 3 are arranged in sequence; one end of the connecting shaft 1 forms an end head 5, and the first gear 3 has a connecting hole. The first gear 3 is sleeved on the connecting shaft 1 through the connecting hole, and the diameter of the end head 5 is larger than the diameter of the connecting hole, which fixes the position of the first gear 3. The other end of the connecting shaft 1 is connected to the drive motor.

[0027] The tension spring 10 is sleeved on the connecting shaft 1 and is located between the first gear 3 and the second gear 2. The two ends of the tension spring 10 are respectively connected to the first gear 3 and the second gear 2. When the second gear 2 is engaged with the driven gear 4, the tension spring 10 is in its original length state. When the driven gear 4 cannot rotate, the second gear 2 moves in a direction away from the first gear 3 and separates from the driven gear 4. At this time, the tension spring 10 is in a stretched state. When the motor stops rotating, under the action of the tension of the tension spring 10, the second gear 2 returns to its original position and engages with the driven gear 4.

[0028] Furthermore, the second gear 2 has a through hole, and the second gear 2 is connected to the connecting shaft 1 through the through hole 11. The second gear 2 has an elastic portion, and the elastic portion is arranged around the through hole 11 to form a plurality of elastic strips 12 are formed along the direction from the through hole 11 to the periphery. The plurality of elastic strips 12 are arranged at intervals, and each elastic strip 12 corresponds one-to-one to each tooth. A compression zone 13 is formed between two adjacent elastic strips 12. Along the direction from the through hole 11 to the periphery of the second gear 2, the area of the compression zone 13 gradually decreases, and the thickness of the compression zone 13 is less than the thickness of the elastic strip 12. When the driven gear 4 stops rotating, the elastic portion can help the second gear 2 to have a buffering effect, and then move in the direction away from the first gear 3 to separate from the driven gear 4.

[0029] Furthermore, a guide spring 6 is provided on the connecting shaft 1, and the guide spring 6 is located on the side of the second gear 2 away from the first gear 3; when the driven gear 4 stops rotating, the first gear 3 moves toward the direction of the guide spring 6, compressing the guide spring 6. When the driving motor stops driving, the second gear 2 returns to its original position under the tension of the guide spring 6 and the tension spring 10.

[0030] A buffer gear 7 is provided on the side of the second gear 2 facing the first gear 3, and the teeth on the buffer gear 7 are elastic; the buffer gear 7 has the same number of teeth and module as the second gear 2, and each tooth on the buffer gear 7 corresponds one-to-one to each tooth of the second gear 2. Since the rebounded second gear 2 can easily collide with the driven gear 4, the buffer gear 7 can effectively reduce the damage caused by the collision.

[0031] Furthermore, the sum of the thicknesses of the second gear 2 and the buffer gear 7 is greater than the thickness of the driven gear 4 , ensuring that the second gear 2 is smoothly meshed with the driven gear 4 when rebounded.

[0032] Furthermore, a boss 8 is provided on the side of the driven gear 4 facing the first gear 3, and the boss 8 extends in the direction of the first gear. A baffle 9 is provided on the boss 8, and the radius of the baffle 9 is greater than the distance from the tooth groove of the driven gear 4 to the center of the driven gear 4. If the elastic force applied to the second gear 2 is too large, resulting in excessive rebound, the baffle 9 will play a certain blocking role, and the distance between the baffle 9 and the driven gear 4 and the thickness of the driven gear 4 are less than or equal to the thickness of the second gear 2, thereby ensuring that the second gear 2 can smoothly mesh with the driven gear 2 after rebounding.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gear transmission structure capable of buffering dislocation, characterized in that: The invention comprises a first gear, a second gear, a driven gear and a driving motor, wherein an elastic structure is connected between the first gear and the second gear, and the driven gear is meshed with the second gear; the first gear and the second gear are driven to rotate simultaneously by the driving motor, and when the driven gear stops rotating, the second gear is separated from the driven gear; The gear transmission structure capable of buffering misalignment includes a connecting shaft, the first gear and the second gear are respectively connected to one end of the connecting shaft, and the other end of the connecting shaft is connected to the drive motor; Along the direction of one end of the connecting shaft, the second gear and the first gear are arranged in sequence; One end of the connecting shaft forms a head, the first gear has a connecting hole, and the first gear is sleeved on the connecting shaft through the connecting hole; the diameter of the head is larger than the diameter of the connecting hole, and the position of the first gear is fixed; The second gear has a through hole, the second gear is connected to the connecting shaft through the through hole, and the second gear has an elastic portion, the elastic portion is arranged around to form the through hole; A boss is provided on the side of the driven gear facing the first gear, and the boss extends toward the first gear. A baffle is provided on the boss, and the radius of the baffle is greater than the distance from the tooth groove of the driven gear to the center of the driven gear.

2. The gear transmission structure capable of buffering misalignment according to claim 1, wherein: The elastic structure includes a tension spring, which is sleeved on the connecting shaft and located between the first gear and the second gear. Two ends of the tension spring are respectively connected to the first gear and the second gear.

3. The gear transmission structure capable of buffering misalignment according to any one of claims 1 to 2, characterized in that: A guide spring is provided on the connecting shaft, and the guide spring is located on a side of the second gear away from the first gear; when the driven gear stops rotating, the first gear moves toward the guide spring to compress the guide spring.

4. The gear transmission structure capable of buffering misalignment according to any one of claims 1 to 2, characterized in that: A buffer gear is provided on the side of the second gear facing the first gear, and the teeth on the buffer gear are elastic; the number of teeth and module of the buffer gear and the second gear are the same, and each tooth on the buffer gear corresponds to each tooth on the second gear one by one.

5. The gear transmission structure capable of buffering misalignment according to claim 4, wherein: A sum of the thicknesses of the second gear and the buffer gear is greater than a thickness of the driven gear.

6. The gear transmission structure capable of buffering misalignment according to any one of claims 1 to 2, characterized in that: The sum of the thickness of the driven gear and the distance between the blocking piece and the driven gear is less than or equal to the thickness of the second gear.

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