CN114962564A - Direct-transmission power output gear shifter - Google Patents

Abstract

The embodiment of the present invention discloses a direct transmission power output gear shifter, comprising a gear shift box, wherein a drive shaft, a driven shaft and a shift trigger device are arranged in the gear shift box; the output end of the drive shaft is provided with output gear, a reverse unidirectional device is arranged between the driving shaft and the output gear; one end of the driven shaft is connected to the driven gear, and a forward unidirectional device is arranged between the driven shaft and the driven gear the drive shaft is decelerated and connected to the driven gear, and the driven shaft is decelerated and connected to the output gear; the shift trigger device controls the degree of rotational synchronization between the drive shaft and the output gear. The direct transmission power output gear shifter described in the embodiment of the present invention adopts the direct transmission power output, so that the output speed range is the same as the output effect of the high-efficiency end of the transmission motor, which can not only improve the service life of the motor, but also ensure the motorcycle The stable power output improves the stability and safety of the equipment and reduces the difficulty.

Description

A direct drive power output shifter

technical field

The embodiments of the present invention relate to the technical field of gear shifters for motorcycles, further relate to the technical field of gear shifters for tricycles and three-wheeled motorcycles, and in particular to a direct drive power output gear shifter.

Background technique

The electric motorcycle motor does not output the required power perfectly, so after the motor outputs the power, the power output by the motor is adjusted by the gear set. At present, electric motorcycles generally use in-wheel motors or direct first-level deceleration, that is, the gear shifting box adopts one-level deceleration. Due to the limitations of the motorcycle shifting box, a high-speed motor is required to amplify the torque through the shifting box to solve the problem of motorcycles. The driving force of the car can meet the high-speed and high-efficiency requirements at the same time. This design method has proved that it cannot ensure high-speed driving efficiency while improving high torque. Therefore, in the actual design, the motor power is continuously increased, and the motor is designed for high speed. , the cost of the motor, the difficulty of reliability assurance, and the danger are constantly increasing, and the energy consumption is very large, and the problem has not been fundamentally solved. Designing a two-gear box for future electric motorcycles is a long-term effort in the industry.

SUMMARY OF THE INVENTION

To this end, the embodiment of the present invention provides a direct transmission power output gear shifter, so as to solve the problems of high motor and driver cost, high reliability requirement and high guarantee difficulty caused by the limitation of gear shifting box in the prior art .

In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:

A direct drive power output gear shifter includes a gear shift box, wherein a drive shaft, a driven shaft, and a shift trigger device are arranged in the gear shift box; an output gear is arranged at the output end of the drive shaft, and the drive shaft is A reverse unidirectional device is arranged between the shaft and the output gear; one end of the driven shaft is connected to the driven gear, and a forward unidirectional device is arranged between the driven shaft and the driven gear; the driving shaft descends The high-speed transmission is connected with the driven gear, and the driven shaft is connected with the output gear through the reduced-speed transmission; the shift trigger device controls the rotational synchronization degree between the driving shaft and the output gear.

Further, the reverse unidirectional device is provided with a first outer casing that is fixedly connected with the output gear, the first outer casing is provided with a first shaft sleeve that rotates synchronously with the driving shaft, and the outer edge of the first shaft sleeve is provided. There are several first cam outer edges, and a wide and narrow reverse progressive gap is formed between the first cam outer edge and the first outer sleeve, and the reverse progressive gap is set to widen first along the rotation direction of the driving shaft. The width of the rolling elements is between the widest gap and the narrowest gap of the progressive gap.

Further, the forward unidirectional device is provided with a second outer sleeve that is fixedly connected with the driven gear, and the second outer sleeve is provided with a second sleeve that rotates synchronously with the driven shaft. The outer edge is provided with a plurality of second cam outer edges, and a wide to narrow positive progressive gap is formed between the second cam outer edge and the second outer sleeve, and the positive progressive gap is set to rotate along the driven gear. The direction is wide at first and then narrow, and rolling bodies are arranged in the forward progressive gap, and the width of the rolling bodies is between the widest gap and the narrowest gap of the second progressive gap.

Further, the shift trigger device includes a shift fork, a shift shaft, and a solenoid valve, the shift shaft is parallel to the drive shaft, two ends of the shift fork are respectively connected to the drive shaft and the shift shaft, and the shift fork is connected to the drive shaft and the shift shaft respectively. A first sliding block is arranged between the driving shaft and the driving shaft, the first sliding block rotates synchronously with the driving shaft, a second sliding block is arranged between the fork and the shifting shaft, and the solenoid valve drives the fork to extend The stop shaft slides.

Further, a key is provided between the first sliding block and the driving shaft.

Further, the connecting side of the first sliding block and the output gear is provided with a convex block, and the output gear is provided with a groove corresponding to the convex block.

Further, the front end surface of the protrusion located in the rotation direction is a circular arc surface.

Further, the driving shaft is provided with first external teeth meshing with the driven gear, and the number of teeth of the first external teeth is smaller than the number of teeth of the driven gear.

Further, the output end of the output gear passes out of the gear box, the input end of the output gear is provided with a shaft hole, and one end of the drive shaft inserted into the bearing is connected to the output gear.

Further, the driven shaft is provided with second external teeth meshing with the output gear, and the number of teeth of the second external teeth is smaller than the number of teeth of the output gear.

The embodiments of the present invention have the following advantages:

The direct drive power output gear shifter described in the embodiment of the present invention adopts direct drive power output, the input end and the output end are on the same center line, and the transmission between the driving shaft and the driven shaft is through two reverse single The steering gear is controlled to form two output gears, and the shifting fork is controlled to be stuck and disengaged to realize shifting, which can maintain the output speed of the motor at the high-efficiency end, and does not require the motor to output at the peak speed all the time, and the requirements for the motor are low. The range of the output speed of this design is the same as the output effect of the high-efficiency end of the transmission motor, which can not only improve the service life of the motor, but also ensure the stable power output of the motorcycle, improve the stability and safety of the equipment, and reduce the difficulty.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that are required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can also be obtained according to the extension of the drawings provided without creative efforts.

The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with the technology, and are not used to limit the conditions for the implementation of the present invention, so there is no technical The substantive meaning above, any modification of the structure, the change of the proportional relationship or the adjustment of the size should still fall within the technical content disclosed in the present invention without affecting the effect and the purpose that the present invention can produce. within the range that can be covered.

1 is a full cross-sectional view of a direct drive power output gear shifter located in the first gear according to an embodiment of the present invention;

2 is a full cross-sectional view of a direct drive power output gear shifter located in the second gear according to an embodiment of the present invention;

3 is a schematic diagram of the working state of the driving shaft and the output gear in the first gear;

4 is a schematic diagram of the working state of the driven gear and the driven shaft in the first gear;

FIG. 5 is a schematic diagram of the working state of the driven shaft and the driven gear in the second gear.

In the picture:

1. Gearbox; 2. Drive shaft; 3. First external tooth; 4. Output gear; 5. Reverse one-way device; 6. Driven shaft; 7. Driven gear; 8. Forward one-way device ;9, the second external tooth; 10, the fork; 11, the shift shaft; 12, the solenoid valve; 13, the bump; 14, the first slider; 18. Reverse progressive slot; 19. Rolling body; 20. Second jacket; 21. Second bushing; 22. Second cam outer edge; 23. Forward progressive slot.

Detailed ways

The embodiments of the present invention are described below by specific specific embodiments. Those who are familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

A direct transmission power output gear shifter includes a gear shift box 1, and the gear box 1 is provided with a driving shaft 2, a driven shaft 6, and a shift trigger device. The specific structure of the structure and its principle:

As shown in FIG. 1 , the output end of the drive shaft 2 is provided with an output gear 4 , the input end of the output gear 4 is provided with a shaft hole, and one end of the drive shaft 2 is inserted into the shaft hole and connected to the output through a bearing Gear 4. Both the drive shaft 2 and the output gear 4 are connected to the gear box 1 through bearings. The input end of the drive shaft 2 passes through the gear box 1 to connect to the motor, and the output end of the output gear 4 passes through the gear box 1 to connect to the actuator. In the embodiment, the output mode of the output gear 4 is gear output or shaft output.

A reverse unidirectional device 5 is arranged between the driving shaft 2 and the output gear 4 . In this embodiment, the reverse unidirectional device 5 is arranged in the shaft hole. The reverse unidirectional device 5 is provided with a first casing 15 that is fixedly connected to the output gear 4, and a first casing 16 that rotates synchronously with the driving shaft 2 is arranged in the first casing 15. The first casing The outer edge of 16 is provided with a number of first cam outer edges 17, and between the first cam outer edge 17 and the first casing 15, a wide to narrow reverse progressive slot 18 is formed, and the reverse progressive slot 18 is set In order to widen first and then narrow along the rotation direction of the driving shaft 2, rolling elements 19 are arranged in the progressive gap. between the widest gap and the narrowest gap.

As shown in Figures 1 and 3, the shift trigger device is in the open state, the driving shaft 2 and the output gear 4 rotate in the same direction but the rotational speeds are not synchronized, the driving shaft 2 rotates rapidly, and the output gear 4 has a slow rotational speed after two decelerations. For the driving shaft 2, as shown in Figure 3, the relative rotation between the driving shaft 2 and the output gear 4 is reversed (the dotted arrow in Figure 3 points to the opposite direction), and the rotation between the two is relatively independent and has no influence. The reverse unidirectional device 5 is in the state of following the driving shaft 2. Depending on the rotation direction of the driving shaft 2, the reverse progressive slit 18 is set to widen first and then narrow along the rotation direction of the driving shaft 2, that is, as shown in FIG. The progressive slot 18 is widened first and then narrowed in the direction of the solid arrow of the driving shaft 2 . As shown in Figure 2, the shift trigger device is in the closed state, the drive shaft 2 and the output gear 4 rotate synchronously, and there is no relative rotation between the two. Affects the synchronous rotation between the drive shaft 2 and the output gear 4 .

The shift trigger device controls the degree of rotational synchronization between the drive shaft 2 and the output gear 4 , and the shift trigger device includes a fork 10 , a shift shaft 11 , and a solenoid valve 12 , and the shift shaft is parallel to the drive shaft. 2. Both ends of the fork are respectively connected to the drive shaft 2 and the shift shaft.

A first sliding block 14 is arranged between the fork and the driving shaft 2, and the first sliding block 14 rotates synchronously with the driving shaft 2. Specifically, the first sliding block 14 is connected to the driving shaft 2 by a spline, such as a flat key or The splines make the first sliding block 14 and the driving shaft 2 rotate synchronously, and the first sliding block 14 and the fork are connected by a bearing, so that the two are rotatably connected.

A second sliding block is arranged between the shift fork and the shift shaft, the solenoid valve drives the shift fork to slide along the shift shaft, the second slide block is sleeved on the shift shaft, and the shift shaft is fixed. Mainly as a slide rail for the second slider. The fixed connection or rotational connection between the fork and the second slide block, preferably the rotational connection of the two, can eliminate the influence of the rotational vibration transmitted by the connecting end of the driving shaft 2 on the fork on the connecting end of the fork and the second slide block, Can increase the life of the fork.

The solenoid valves 12 are arranged on both sides of the fork 10 to drive the fork 10 to slide along the shift shaft 11. In this embodiment, the solenoid valve is symmetrically arranged on both sides of the shift fork. The solenoid valve includes an insulating sleeve and a metal coil wound on the insulating sleeve. One of the specifications is: the state is annular, the number of turns is 2010, and the current is 1.1.-1.3 A, outgoing QVR line, the wire diameter is 1.5 square meters, the working voltage is 12V, the adsorption force is 10kg, and the adsorption distance is 10mm. The working principle of the solenoid valve is that the magnetic field generated by the switching on and off of the metal coil controls the movement of the shift fork on the shift shaft. The coil can be extended to the outside of the gear box 1 to connect to the power supply; when the side is powered off and the metal coil on the other side is energized, a reverse magnetic force is generated, and the shift fork moves in the opposite direction. The solenoid valve can realize long-distance operation, small control energy, easy to realize automation, fast action and simple structure. As shown in Figure 1, the fork 10 is in the middle state as the first gear. As shown in Figure 2, when the fork slides to the right through the solenoid valve 12, it is the second gear, so as to realize the dynamic sliding shifting of the slider and smoothly switch between high and low gears bit.

A convex block is provided on the side of the first sliding block 14 which is closed with the output gear 4 , and a groove matched with the convex block is provided on the output gear 4 . In order to increase the closing strength between the two and disperse the force, it is necessary to increase the number of bumps and strengthen the treatment. In this embodiment, several bumps are evenly distributed in a circle, and the front end surface of the bump located in the rotation direction is an arc surface. The bump is made of 20CoMnTi material and carburized and quenched (carburized layer 1-2mm) to enhance its mechanical properties.

A driven gear 7 is sleeved on the driven shaft 6 , and both ends of the driven shaft 6 are connected to the gear box 1 through bearings. A positive unidirectional device 8 is provided between the driven shaft 6 and the driven gear 7, and the positive unidirectional device 8 is provided with a second outer casing 20 fixedly connected with the driven gear 7. The second outer casing 20 is provided with a second bushing 21 that rotates synchronously with the driven shaft 6, the outer edge of the second bushing 21 is provided with a number of second cam outer edges 22, the second cam outer edge 22 and the second outer shell A wide-to-narrow forward progressive gap 23 is formed between 20, the forward progressive gap 23 is set to widen first and then narrow along the rotation direction of the driven gear 7, and rolling elements are arranged in the forward progressive gap 23 19 , the width of the rolling elements 19 is between the widest gap and the narrowest gap of the forward progressive gap 23 .

As shown in Figures 1 and 4, the shift trigger device is in the open state, the driving shaft 2 and the output gear 4 rotate in the same direction but the rotational speeds are not synchronous, but the rotational speed between the driving shaft 2 and the driven gear 7 is fixed, and the driven shaft 6 There is no power at this time, and the relative rotation between the driven gear 7 and the driven shaft 6 is reverse rotation (as shown in Figure 4, the dashed arrows of the driven gear 7 and the driven shaft 6 are reversed), in order to realize the driving shaft 2 The speed is reduced and transmitted with the output gear 4, and the driven gear 7 inputs power to the driven shaft 6, so that the driven gear 7 and the driven shaft 6 rotate synchronously (as shown in Figure 4, the driven gear 7 and the driven shaft 6 The solid line arrows are in the same direction), the forward unidirectional device 8 is in a stopped state, and the forward progressive gap 23 is set to widen first and then narrow along the rotation direction of the driven gear 7 .

As shown in Figures 2 and 5, the shift trigger device is in the closed state, the rotation of the driving shaft 2 and the output gear 4 are synchronized, the speed of the output gear 4 is increased, the rotation speed of the driven shaft 6 is reversely accelerated, and the rotation speed of the driven gear 7 At this time, the speed of the driven shaft 6 is faster than the speed of the driven gear 7, and the relative rotation between the two is reverse rotation (as shown in Figure 5, the dashed arrows of the driven shaft 6 and the driven gear 7 are reversed. ), the forward one-way device 8 is in the state of following the driven shaft 6, and the forward progressive gap 23 is set to widen first and then narrow along the rotation direction of the driven gear 7, so that the driven gear 7 and the driven shaft The rotations between 6 are relatively independent, and the two actually rotate in the same direction but with different rotational speeds (in Figure 5, the solid line arrows of the driven shaft 6 and the driven gear 7 are in the same direction).

The drive shaft 2 and the driven gear 7 are connected by a deceleration transmission. The drive shaft 2 is provided with first external teeth 3 that mesh with the driven gear 7. The number of teeth of the first external teeth 3 is greater than that of the driven gear. The number of teeth of gear 7 realizes one-stage deceleration. The driven shaft 6 and the output gear 4 are connected by a deceleration transmission. The driven shaft 6 is provided with a second external tooth 9 that meshes with the output gear 4. The number of teeth of the second external tooth 9 is smaller than that of the output gear. The number of teeth of 4 realizes two-stage speed reduction.

Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the present invention, which will be obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention fall within the scope of the claimed protection of the present invention.

Claims (10)

1. The utility model provides a direct drive power take off gear shifting ware, includes the gear shifting case, its characterized in that: a driving shaft, a driven shaft and a gear shifting trigger device are arranged in the gear shifting box;

an output gear is arranged at the output end of the driving shaft, and a reverse isolator is arranged between the driving shaft and the output gear;

one end of the driven shaft is connected with a driven gear, and a positive one-way clutch is arranged between the driven shaft and the driven gear;

the driving shaft is connected with a driven gear in a speed reduction transmission manner, and the driven shaft is connected with an output gear in a speed reduction transmission manner;

the gear shifting trigger device controls the rotation synchronization degree between the driving shaft and the output gear.

2. The direct drive power output shifter as recited in claim 1, wherein: the reverse isolator is provided with a first outer sleeve fixedly connected with the output gear, a first shaft sleeve rotating synchronously with the driving shaft is arranged in the first outer sleeve, a plurality of first cam outer edges are arranged on the outer edges of the first shaft sleeve, a reverse progressive gap which is wide and narrow is formed between the outer edge of the first cam and the first outer sleeve, the reverse progressive gap is formed by being firstly wide and then narrow in the rotating direction of the driving shaft, a rolling body is arranged in the progressive gap, and the width of the rolling body is between the widest gap and the narrowest gap of the progressive gap.

3. The direct drive power output shifter as recited in claim 1, wherein: the positive direction isolator is provided with a second outer sleeve fixedly connected with the driven gear, a second shaft sleeve synchronously rotating with the driven shaft is arranged in the second outer sleeve, a plurality of second cam outer edges are arranged on the outer edges of the second shaft sleeve, a positive direction progressive gap with a narrow width is formed between the second cam outer edges and the second outer sleeve, the positive direction progressive gap is set to be firstly wide and then narrow along the rotating direction of the driven gear, a rolling body is arranged in the positive direction progressive gap, and the width of the rolling body is between the widest gap and the narrowest gap of the second progressive gap.

4. The direct drive power output shifter as recited in claim 1, wherein: the gear shifting trigger device comprises a shifting fork, a gear shifting shaft and an electromagnetic valve, the gear shifting shaft is parallel to the driving shaft, the two ends of the shifting fork are respectively connected with the driving shaft and the gear shifting shaft, a first sliding block is arranged between the shifting fork and the driving shaft, the first sliding block and the driving shaft synchronously rotate, a second sliding block is arranged between the shifting fork and the gear shifting shaft, and the electromagnetic valve drives the shifting fork to slide along the gear shifting shaft.

5. The direct drive power output shifter as set forth in claim 4, wherein: the first sliding block key is connected with the driving shaft.

6. The direct drive power output shifter as set forth in claim 4, wherein: a convex block is arranged on the first sliding block and on the connecting side of the first sliding block and the output gear, and a groove corresponding to the convex block is arranged on the output gear.

7. The direct drive power output shifter as recited in claim 6, wherein: the front end surface of the lug in the rotating direction is an arc surface.

8. The direct drive power output shifter as recited in claim 1, wherein: and the driving shaft is provided with first external teeth meshed with the driven gear, and the number of teeth of the first external teeth is less than that of the driven gear.

9. The direct drive power output shifter as recited in claim 1, wherein: the output end of the output gear penetrates out of the gear shifting box, the input end of the output gear is provided with a shaft hole, and one end of the driving shaft inserted into the bearing is connected with the output gear through the bearing.

10. The direct drive power output shifter as recited in claim 1, wherein: and a second external tooth meshed with the output gear is arranged on the driven shaft, and the number of teeth of the second external tooth is less than that of the output gear.

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