Swing transmission mechanism

Abstract

A swing transmission mechanism comprises an input shaft, a driven shaft, a swing shaft and an output shaft. The input shaft is connected with the driven shaft through an intersecting shaft transmission mechanism or a staggered shaft transmission mechanism; the driven shaft and the output shaft are connected through an intersecting shaft transmission mechanism or a staggered shaft transmission mechanism; the output shaft is vertically and fixedly connected with the swing shaft and swings to drive the swing shaft to rotate. The input shaft outputs transmission power to the output shaft through the two sets of intersecting shaft transmission mechanisms or the two sets of intersecting shaft transmission mechanisms, meanwhile, the output shaft can swing around the swing shaft, the output shaft and the input shaft can swing within a certain included angle range, and therefore power is transmitted, and meanwhile a vehicle can roll laterally. And the rotation included angle between the output shaft and the input shaft is limited through the swing positioning block and the rubber block, and resilience force is provided, so that the heeling vehicle body is aligned. And meanwhile, chain falling is prevented in the vehicle swinging process. The transmission mechanism is compact in structure and high in transmission efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle transmission, in particular to a swing transmission mechanism for preventing a three-wheel vehicle from tilting. Background Art

[0002] A tricycle is a common and convenient means of transport for carrying people and goods. The existing tricycle rear wheel adopts a one-piece rear axle, which connects the two rear wheels through a bridge tube, is rigidly connected to the frame, and drives the rear wheel to rotate through a sprocket drive. This structure is simple, but the body can basically not tilt, which makes the tricycle easily roll over when turning. Summary of the invention

[0003] The utility model aims to solve the defect that the existing three-wheeled vehicle cannot tilt, and provide a swing transmission mechanism which can tilt and transmit power to the rear wheel through the input shaft.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A swing transmission mechanism, characterized in that it includes an input shaft, a driven shaft, a swing shaft and an output shaft; the input shaft is connected to the driven shaft through an intersecting shaft transmission mechanism or a staggered shaft transmission mechanism; the driven shaft and the output shaft are connected through an intersecting shaft transmission mechanism or a staggered shaft transmission mechanism; the output shaft is vertically fixedly connected to the swing shaft, and the swing of the output shaft drives the swing shaft to rotate. The input shaft transmits driving force to the output shaft through two sets of intersecting shaft transmission mechanisms or staggered shaft transmission mechanisms. At the same time, since the output shaft and the input shaft are transmitted through two sets of intersecting shaft transmission mechanisms or staggered shaft transmission mechanisms, the output shaft can swing around the swing shaft, and the output shaft and the input shaft can swing within a certain angle range, thereby achieving the transmission of power while achieving the roll of the vehicle.

[0006] Its further feature is that the intersecting axis transmission mechanism is a bevel gear transmission mechanism, and the staggered axis transmission mechanism is a staggered axis helical gear mechanism or a worm gear transmission mechanism.

[0007] Furthermore, a swinging positioning block is arranged on the swinging shaft, and a rubber block is arranged outside the swinging positioning block. The swinging positioning block and the rubber block limit the rotation angle between the output shaft and the input shaft, and the rubber block can also provide a rebound force to make the tilted vehicle body return to the normal position.

[0008] Furthermore, a swing limit block is arranged on one side of the swing shaft, and the swing limit block is locked by a locking pin to limit the rotation of the swing shaft. The locking pin can realize the switching of the vehicle between the swing state and the rigid body state.

[0009] Preferably, a bevel gear shaft is provided between the driven shaft and the output shaft, and power is transmitted to the output shaft via the bevel gear shaft.

[0010] Preferably: an input flywheel is coaxially arranged on the input shaft, a first bevel gear is coaxially arranged on the input shaft, a second bevel gear is coaxially arranged on the driven shaft, the first bevel gear and the second bevel gear are meshed with each other; an internal spur gear is arranged on the upper end of the driven shaft, a spur gear is arranged on one end of the bevel gear shaft, the internal spur gear and the spur gear are meshed with each other; a third bevel gear is arranged on the other end of the bevel gear shaft, a fourth bevel gear is arranged on one end of the output shaft, the third bevel gear and the fourth bevel gear are meshed with each other; an output flywheel is arranged on one end of the output shaft. The input flywheel connected to the input shaft can input power through a sprocket transmission method, and the output flywheel on the output shaft can also transmit driving force to the rear wheel through a sprocket transmission method.

[0011] Preferably: the input shaft is supported by a bearing and is arranged on one side of the power input shaft housing; the driven shaft is arranged in the power input shaft housing and supported by bearings at both ends; the bevel gear shaft is arranged in the rocker connecting sleeve and supported by bearings on both sides; the rocker shaft and the rocker positioning block are arranged in the rocker upper cover and the rocker lower cover and supported by bearings; the rubber block is in the cavity between the rocker upper cover and the rocker lower cover; the rocker limit block is arranged in the rocker limit housing.

[0012] The input shaft of the utility model outputs transmission power to the output shaft through two sets of intersecting shaft transmission mechanisms or staggered shaft transmission mechanisms, and at the same time, the output shaft can swing around the swing axis, and the output shaft and the input shaft can swing within a certain angle range, so as to realize the vehicle's roll while transmitting power. The swing positioning block and the rubber block are also used to limit the rotation angle between the output shaft and the input shaft, and provide a rebound force to make the tilted vehicle body return to the normal state. At the same time, the chain is prevented from falling off during the vehicle's swinging process. The utility model has a compact structure and high transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1 is a front view schematic diagram of the utility model.

[0014] FIG. 2 is a side view schematic diagram of the utility model.

[0015] Figure 3 shows Figure 1 AA section diagram. DETAILED DESCRIPTION

[0016] like Figure 1-3As shown, a swing transmission mechanism includes an input shaft 1, a driven shaft 2, a bevel gear shaft 3, a swing shaft 4 and an output shaft 5. An input flywheel 6 is coaxially arranged on one end of the input shaft 1, a first bevel gear 7 is coaxially arranged on the other end of the input shaft 1, and a second bevel gear 8 is coaxially arranged on the driven shaft 2, and the first bevel gear 7 and the second bevel gear 8 are meshed. An internal spur gear 9 is arranged on the upper end of the driven shaft 2, and a spur gear 10 is arranged on one end of the bevel gear shaft 3, and the internal spur gear 9 and the spur gear 10 are meshed. A third bevel gear 11 is arranged on the other end of the bevel gear shaft 3, and a fourth bevel gear 12 is arranged on one end of the output shaft 5, and the third bevel gear 11 and the fourth bevel gear 12 are meshed. An output flywheel 13 is arranged on the other end of the output shaft 5. The output shaft 5 is vertically fixedly connected to the swing shaft 4, and the swing of the output shaft 5 drives the swing shaft 4 to rotate. A swing positioning block 14 is arranged on the swing shaft 4, and a rubber block 15 is provided on the outer side of the swing positioning block 14. A swing limit block 16 is provided on one side of the swing shaft 4, and the swing limit block 16 is locked by a locking pin 17 to limit the rotation of the swing shaft 4. The locking pin 17 can realize the switching of the vehicle between the swing state and the rigid body state.

[0017] The input shaft 1 is supported by bearings and is arranged on one side of the power input shaft housing 18. The driven shaft 2 is arranged in the power input shaft housing 18, and is supported by bearings at both ends. The bevel gear shaft 3 is arranged in the rocker connecting sleeve 19, and is supported by bearings at both sides. The rocker shaft 4 and the rocker positioning block 14 are arranged in the rocker upper cover 20 and the rocker lower cover 21, and are supported by bearings. The rubber block 15 is in the cavity between the rocker upper cover 20 and the rocker lower cover 21. The rocker limit block 16 is arranged in the rocker limit housing 22.

[0018] When the utility model is working, the lock pin 17 is opened, and the pedal drives the input flywheel 6 and the input shaft 1 to rotate through the sprocket transmission. The input shaft 1 changes the transmission direction through the meshing first bevel gear 7 and the second bevel gear 8, and drives the driven shaft 2 perpendicular to the input shaft 1 to rotate. The driven shaft 2 drives the bevel gear shaft 3 to rotate through the meshing internal spur gear 9 and the spur gear 10. The bevel gear shaft 3 changes the transmission direction through the meshing third bevel gear 11 and the fourth bevel gear 12, and drives the output shaft 4 perpendicular to the bevel gear shaft 3 to rotate. The output flywheel 13 on the output shaft 4 can drive the rear wheel to rotate through the sprocket transmission mechanism. The two rear wheels are connected to an axis through the rear wheel shaft. Since one end of the output shaft 4 is a free end, one end of the output shaft 4 can swing, and the other end can rotate around the swing axis 3. When the vehicle body rolls, the output shaft 4 swings relative to the input shaft 1 to compensate for the roll, and the two rear wheels are always perpendicular to the ground to prevent the vehicle body from overturning. In addition, the swing positioning block 14 and the rubber block 15 limit the rotation angle between the output shaft 4 and the input shaft 1 and provide a rebound force to restore the tilted vehicle body to the normal position, and prevent the chain from falling off during the vehicle swinging process.

[0019] The bevel gear transmission mechanism in the above embodiment may also be replaced by a staggered axis transmission mechanism such as a staggered axis helical gear mechanism or a worm gear transmission mechanism.

Claims

1. A swing transmission mechanism, characterized in that: It includes an input shaft, a driven shaft, a swing shaft and an output shaft; the input shaft is connected to the driven shaft through an intersecting shaft transmission mechanism or a staggered shaft transmission mechanism; the driven shaft and the output shaft are connected through an intersecting shaft transmission mechanism or a staggered shaft transmission mechanism; the output shaft is vertically fixedly connected to the swing shaft, and the swing of the output shaft drives the swing shaft to rotate.

2. The swing transmission mechanism according to claim 1, characterized in that: The intersecting axis transmission mechanism is a bevel gear transmission mechanism, and the staggered axis transmission mechanism is a staggered axis helical gear mechanism or a worm gear transmission mechanism.

3. The swing transmission mechanism according to claim 1 or 2, characterized in that: A swing positioning block is arranged on the swing shaft, and a rubber block is arranged on the outer side of the swing positioning block.

4. The swing transmission mechanism according to claim 3, characterized in that: A swing limit block is arranged on one side of the swing shaft, and the swing limit block is locked by a locking pin to limit the rotation of the swing shaft.

5. The swing transmission mechanism according to claim 4, characterized in that: A bevel gear shaft is arranged between the driven shaft and the output shaft, and power is transmitted to the output shaft through the bevel gear shaft.

6. The swing transmission mechanism according to claim 5, characterized in that: An input flywheel is coaxially arranged on the input shaft, a first bevel gear is coaxially arranged on the input shaft, a second bevel gear is coaxially arranged on the driven shaft, and the first bevel gear and the second bevel gear are meshed with each other; an internal spur gear is arranged on the upper end of the driven shaft, a spur gear is arranged on one end of the bevel gear shaft, and the internal spur gear and the spur gear are meshed with each other; a third bevel gear is arranged on the other end of the bevel gear shaft, a fourth bevel gear is arranged on one end of the output shaft, and the third bevel gear and the fourth bevel gear are meshed with each other; an output flywheel is arranged on one end of the output shaft.

7. The swing transmission mechanism according to claim 6, characterized in that: The input shaft is supported by bearings and is arranged on one side of the power input shaft housing; the driven shaft is arranged in the power input shaft housing and supported by bearings at both ends; the bevel gear shaft is arranged in the rocker connecting sleeve and supported by bearings on both sides; the rocker shaft and the rocker positioning block are arranged in the rocker upper cover and the rocker lower cover and supported by bearings; the rubber block is in the cavity between the rocker upper cover and the rocker lower cover; the rocker limit block is arranged in the rocker limit housing.

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