TWI486281B - Auxiliary vehicle power transmission system - Google Patents

Description

Moped power assist transmission system

The invention relates to a power assist transmission system of a moped, in particular to a power assisted transmission system of a moped which can reverse and step on, and can achieve the effects of forward and reverse transmission or reverse pedaling.

According to the applicant, the applicant has previously obtained the invention patent of I233906 "Motoring Vehicle Mobility Sensing Device", which mainly includes at least one or more pairs of helical gears in the transmission system of the moped, wherein the helical gear is stepped on Driven, but can only rotate in place, the other helical gear can be axially translated on its shaft by the opposite helical gear meshing belt, and an elastic body is provided on the end side of the helical gear, the elastic body and the spiral A ring-shaped magnet that can be displaced with the helical gear is disposed on the end side of the shaft of the gear. The opposite fixed fixed end of the displacement end of the magnet is provided with a Hall sensor, and the lateral direction is generated by the helical gear in the transmission system. The principle of force is to detect the axial displacement of the helical gear, and then output a voltage signal to control the motor, so that the motor power can be output to the assisting vehicle for auxiliary assisting purposes; however, when the human is reversed clockwise When the crank of the assisting vehicle is rotated in the clockwise direction (as viewed from the A1 end of the first transmission shaft A toward the direction A2), a gap is set between the first transmission shaft A and the first left-hand helical gear C. For the one-way ratchet B that the gear can rotate counterclockwise, the first transmission shaft A rotates clockwise. Because of the one-way ratchet B, the first helical gear C cannot be rotated, so the conventional technique is when the manual stepping direction is When the step is reversed, the empty stepping state cannot drive the chain G1 to rotate, so the moped does not have the anti-step function, and obviously needs to be improved.

In view of the above shortcomings, the inventors have intensively conceived the research and development creation, and after a long period of effort, the present invention has been produced.

Therefore, the object of the present invention is to provide a power assist transmission system for a moped that can be reversed and stepped, and can achieve forward and reverse transmission or reverse pedaling.

In order to achieve the above object, the present invention comprises: at least two pairs of intermeshing gear sets, comprising a first and a second gear set, wherein the first and second gear sets respectively comprise a gear and a sliding gear, first, At least one gear set of the second gear set is composed of two helical gears; wherein the gears of the first and second gear sets are fixed on a first transmission shaft, and the crankshafts of the first transmission shaft can be stepped on by the pedals Driven, the axial end of the gear of the second gear set is provided with a male end of a concave-convex type connector; the sliding gears of the first and second gear sets are disposed on a second drive shaft and are movable on the second drive shaft The gears of the first and second gear sets are respectively rotated and axially translated, and an axial body is provided with an elastic body; an axial force bearing pad is sleeved on the gear of the second gear set; The side of the sliding gear of the first and second gear sets is located on the reverse displacement end side; a ring-shaped magnet is sleeved on the sliding gear side of the second gear set, and is displaced with the force; Ear sensor, located in the ring magnet a displacement end side for sensing a displacement change of the ring magnet; a ratchet disk sleeved on a gear end side of the second gear set, a side chain fixed with a chain plate, and an inner side having a female end of a concave-convex type connector The female end is matched with the male end of the concave-convex type connector, so that the ratchet disk can be rotated by the forward and reverse directions of the gear of the second gear set; a driving motor is provided with a deceleration at the front end of the output shaft of the motor The mechanism and the speed reduction mechanism are composed of a plurality of reduction gears, and the last reduction gear sleeve is sleeved on the outer side of the ratchet disk; when the reverse stepping and the positive stepping, the principle of the lateral force generated by the gear in the transmission system is generated, and the sliding is detected. The axial displacement of the gear, which in turn outputs a voltage signal to control the power output of the drive motor , to achieve forward and reverse drive or anti-stepping effect.

1‧‧‧Drive system

2‧‧‧Moving car

A‧‧‧First drive shaft

A1‧‧‧ left end

A2‧‧‧right end

H1, H2‧‧‧ pedal crank

C‧‧‧ helical gear

L‧‧‧Second drive shaft

D‧‧‧Spiral sliding gear

E‧‧‧Spiral sliding gear

F‧‧‧ helical gear

T‧‧‧ axial force washer

B‧‧‧ ratchet disk

B1‧‧‧ one-way ratchet

Q‧‧‧ Concave connector

G1‧‧‧Chain

J‧‧‧Chain

K1‧‧‧ rear wheel

U‧‧Peilin

L1‧‧‧ Elastomer

M1‧‧‧ magnet

N‧‧‧Hor sensor

V‧‧‧ gearbox housing

W‧‧‧ Medium board

O‧‧‧Motor

P‧‧‧ gear

Q1, R1, S1‧‧‧ reduction gears

Θ‧‧‧ slip

20‧‧‧Clutch

21‧‧‧ Gear shaft

22‧‧‧ Drives

23‧‧‧Flexible components

24‧‧‧ card block

3‧‧‧Sliding gear set

4‧‧‧First gear set

5‧‧‧Second gear set

The first figure shows a side view of an embodiment of the present invention assembled on a moped

The second figure shows a partially exploded perspective view of an embodiment of the present invention.

The third figure shows a partial rear view of the embodiment of the present invention (1)

The fourth figure shows a partial rear view of the embodiment of the present invention (2)

Figure 5 is a cross-sectional view showing the combination of the embodiment of the present invention (1)

Figure 6 is a partial sectional view showing the embodiment of the present invention (1)

The seventh figure shows a combination of a concave-convex connector that matches the helical gear and the ratchet disk according to the embodiment of the present invention.

FIG. 8 is a schematic view showing the combination of the outer side of the ratchet disk and the final reduction gear of the speed reduction mechanism according to the embodiment of the present invention.

Figure 9 is a cross-sectional view showing the combination of the embodiment of the present invention (2)

The tenth figure shows a schematic view of the clutch disassembly according to the embodiment of the present invention.

Figure 11 is a partial sectional view showing the embodiment of the present invention (2)

The present invention has been described in detail with reference to the accompanying drawings in which: FIG.

Referring to the first to third figures, the transmission system 1 includes: a first transmission shaft A having a left end A1 and a right end A2, respectively connected to the pedal cranks H1 and H2, and the pedal cranks H1 and H2 respectively Provided on the left and right sides of the moped 2, when the pedal cranks H1, H2 are driven by an external force, the first transmission shaft A can be driven; a left-handed helical gear C (hereinafter referred to as a helical gear C) is disposed on the end side of the left end A1 of the first transmission shaft A, and is movable in the same direction as the first transmission shaft A; when the external force is being stepped on, the first transmission shaft A is pedaled When the cranks H1 and H2 are rotated in the counterclockwise direction (as viewed from the left end A1 end of the first transmission shaft A toward the right end A2 end), the helical gear C also rotates counterclockwise (as shown in the fifth figure); a second transmission shaft L is disposed on the adjacent side of the first transmission shaft A, and is provided with an axially displaceable sliding gear set 3, the sliding gear set 3 comprising a right-handed helical sliding gear D and a left-handed helical sliding gear E (hereinafter referred to as helical sliding gears D, E), the helical sliding gear D meshes with the helical gear C of the first transmission shaft A, and when the helical helical gear C is driven to rotate counterclockwise, the helical sliding gear D can be driven clockwise Direction rotation (as shown in the second figure); a left-handed spiral sliding gear E (hereinafter referred to as a helical sliding gear E) fixed to the helical sliding gear D, so the two are in the same direction of rotation and axial displacement (such as the second The figure shows a right-handed helical gear F (hereinafter referred to as a helical gear F) disposed on the first transmission shaft A And meshing with the helical sliding gear E, so the helical gears C, F have the same direction of rotation (as shown in the second figure); an axially loaded spacer T is sleeved on the helical gear F toward the first transmission axis A The right end A2 (as shown in the fourth and fifth figures); a ratchet disk B, sleeved on the right end A2 of the first transmission shaft A (as shown in the fourth and fifth figures); a concave-convex connector Q, The joint between the helical gear F and the ratchet disk B; the male end of the concave-convex connector Q is disposed at the axial side end of the helical gear F; the female end of the concave-convex connector Q is disposed on the ratchet disk The inside of B; A driving motor O is provided with a gear P at the front end of the output shaft of the motor O, which can drive the speed reducing mechanism composed of the reduction gears Q1, R1, and S1, and the last reduction gear S1 is sleeved on the outer side of the ratchet disk B, and the ratchet disk B The outer side and the last reduction gear S1 of the speed reduction mechanism may be connected in a fixed manner (as shown in FIGS. 8 and 9), and a one-way ratchet B1 may be disposed between the outer side of the ratchet disk B and the last reduction gear S1 of the reduction structure. , means that the last reduction gear S1 can forward the one-way ratchet B1 of the ratchet disk B in the counterclockwise direction, which is equivalent to the external force counterclockwise stepping, does not drive the speed reduction mechanism to operate (Figure 7); When the outer side of the toothed disc B is fixedly connected with the last reduction gear S1 of the speed reduction mechanism, the speed reduction mechanism is provided with a clutch 20 including a gear shaft 21 on which the reduction gears Q1 and R1 are sleeved, and the end side of the gear shaft 21 A driving member 22, an elastic member 23 and a latching block 24 are provided. When the driving member 22 is pressed to disengage the clutch 20, the reduction gears Q1, R1 on the gear shaft 21 can be switched to be non-rotating relationship with each other; when the driving member 22 is pressed to lock the clutch 20, the reduction gear on the gear shaft 21 Q1 and R1 return to the synchronous rotation relationship (see Figures 10 and 11).

When the first transmission shaft A rotates counterclockwise, the helical gear F also rotates counterclockwise, and the helical gear F can drive the ratchet disk B to rotate counterclockwise by using the concave-convex connector Q matched with the ratchet disk B (such as the fifth (Figure 6); a chain plate G1, fixed to the ratchet disk B to the right end A2, and can drive a chain J, so that the rear wheel K1 can be rotated counterclockwise (as shown in the first figure) As shown in the first and fifth figures, when the external force is reversely stepped on, when the pedal cranks H1 and H2 drive the first transmission shaft A to rotate clockwise, the helical gear C also rotates clockwise and drives the second transmission. The helical sliding gear D of the shaft L rotates counterclockwise, and then drives The spiral sliding gear E rotates counterclockwise, and then the helical gear F of the first transmission shaft A rotates clockwise, and then the ratchet disk B drives the chain plate G1 and the chain J to rotate clockwise, thereby driving the rear wheel ankle hub to make the rear Wheel K1 stops and stops; or drives the wheel to rotate clockwise and reverse forward; as shown in Figures 4 and 5, during the aforementioned stepping drive, the gears C, D, E, F will produce lateral direction when rotating. The physical characteristics of the force, so when the helical gear C drives the helical sliding gear D to rotate, the helical sliding gear D will generate a lateral force toward the left end A1 of the first transmission shaft A, and the helical sliding gears D, E and There is no locking device between the two transmission shafts L. Therefore, the helical sliding gears D and E can be moved in the axial direction on the second transmission shaft L. At this time, the axial displacement of the helical sliding gears D and E can be utilized. The amount is used to detect the magnitude of the pedaling torque of the pedal cranks H1 and H2; on the contrary, when the pedaling is reversed, the helical gear C drives the helical sliding gear D to rotate, and the helical sliding gear D is generated to the right end A2 of the first transmission shaft A. Lateral force of the direction, at this time, the spiral sliding gear D, E will be laterally displaced to the right end A2, and since the axial force bearing pad T is disposed at the right end A2 of the first transmission shaft A, and a gap is left between the axial force bearing pad T and the helical sliding gear E, Therefore, the gap can be used to control the displacement of the helical sliding gears D and E to the right end A2 direction; when the helical sliding gears D and E push the displacement to the right end A2, the force can be transmitted. Returning to the first transmission shaft A, and the helical sliding gear E also has a force on the helical gear F in the direction toward the left end A1, so the force of the helical sliding gear E on the helical gear F and the helical sliding gear E on the axially loaded force pad The force of the piece T cancels each other, protects the Palin U at both ends of the second transmission shaft L, and eliminates the axial thrust on the second transmission shaft L; by these settings, during the stepping drive, the second transmission Sleeve on the shaft L The elastic body L1 is deformed by the lateral force generated by the rotation of the helical sliding gears D and E to the left end A1, and the displacement of the helical sliding gears D and E can be linearized when the driving is being driven. The torque is outputted compared to the first transmission shaft A, and the force of the helical sliding gears D and E is returned to the origin; the ring magnet M1 for detecting the displacement of the helical sliding gears D and E is set in the spiral sliding The end side of the gear E is provided with a Hall sensor N at the end side of the opposite magnet M1, and the Hall sensor N can be fixedly mounted on the middle plate W fixed to the gear box housing V; Therefore, the Hall sensor N can be used to sense the change of the distance of the magnet M1, and the voltage signal representing the magnitude of the force of the pedal cranks H1 and H2 can be accurately measured, and the voltage signal can control the power output of the motor O. Therefore, the motor O drives the reduction gear Q1, R1, S1 by the gear P at the front end of the shaft, and then drives the chain G1 to achieve the purpose of positive auxiliary power output; when the cranks H1 and H2 are not stepped on When this voltage signal is the initial voltage value. When the cranks H1 and H2 are stepped on, the voltage signal is positively increased, so that the motor O can output power according to the voltage signal to the reduction gear S1, and the outer side of the ratchet disk B and the last reduction gear S1 of the speed reduction mechanism When the reduction gear S1 can positively rotate the one-way ratchet B1 of the ratchet disk B in the counterclockwise direction or fix it, and the clutch 20 is locked, the ratchet disk B and the chain G1 can be rotated counterclockwise; When the switch is reversed, the displacement of the helical sliding gears D and E to the A2 direction causes the voltage sensing value to quickly return to the initial value or even decrease in the reverse direction and is lower than the initial value, so that the motor O immediately stops the reduction gear S1. The concave-convex connector Q that outputs the power and the helical gear F and the ratchet disk B are matched with a fixed angle slip θ (as shown in the sixth figure), when the concave-convex connector Q is converted from the positive to the reverse When it is rotated to this slip θ, and a frictional force is generated when rotating, the concave-convex connector Q is rotated to Before the dead point, a force is transmitted to the spiral sliding gear E and the helical sliding gear D to generate a thrust to the right end A2 direction, so that the voltage sensing value can quickly return to the initial value or even decrease in the reverse direction and lower than the initial value, so that the motor O After the rotation gears Q1, R1, and S1 stop rotating, and then the helical gear F continues to rotate clockwise to a non-slip angle, the concave-convex connector Q is started to drive the ratchet disk B and the chain G1 to rotate clockwise, thereby driving the rear wheel. The function of the pedal hub to start the brake causes the rear wheel K1 to stop and stop; in addition, when the outer side of the ratchet disk B is fixed with the last reduction gear S1 of the speed reduction mechanism and the clutch 20 is locked, and the rear wheel When K1 can rotate in the same direction as the rear chain plate G1, the voltage sensing value can be reversely reduced and lower than the initial value when the step is reversed, so that the motor O and the reduction gears Q1, R1, and S1 rotate in opposite directions, thereby driving the ratchet disk. B and the chain plate G1 and the rear wheel K1 rotate clockwise and reverse forward; in addition, when the outer side of the ratchet disk B is fixedly connected with the last reduction gear S1 of the speed reduction mechanism, since the speed reduction mechanism is provided with a clutch 20, When there is no power assist, set the clutch 20 to the solution. In the open state, the transmission relationship of the speed reduction mechanism will be disconnected, and when the forward and reverse pedaling, the rotation of the motor O will not be driven, and the foot strength can be reduced; as can be seen from the above description, the present invention has at least two pairs of intermeshing gear sets. The first gear set 4 includes a helical gear C and a helical sliding gear D, and the second gear set 5 includes a helical gear F and a helical sliding gear E, and the first gear set 4 includes 1. The second gear set 4, 5 has at least one gear set composed of two helical gears; for example: a left-handed helical gear C, a right-handed helical sliding gear D, a left-handed helical sliding gear E and a right-handed helical gear F; The helical gears C and F of the two gear sets 4 and 5 are disposed on the first transmission shaft A. The two ends of the first transmission shaft A are connected to the bicycle cranks H1 and H2, and the axial direction of the helical gear F of the second gear set 5 The side end is provided with a male end of the concave-convex type connector Q; the first and second gear sets 4 The sliding gears D and E of the 5 are disposed on the second transmission shaft L. The second transmission shaft L is respectively meshed and rotated by the helical gears C and F of the first and second gear sets 4 and 5, respectively. The axial translational movement is provided with an elastic body L1 on the axial end side.

The spiral sliding gears D and E disclosed in the present invention are respectively right-handed and left-handed, and the purpose thereof is only to increase the effect of the displacement biasing force, so that only one of the two sets of the helical gears C, D or the helical gears E and F The gear set can be a helical gear. The other set is not limited in terms of implementation. The other set can be changed to a general spur gear or a helical gear. It can also achieve the lateral force by the helical gear rotation. The principle is to detect the pedaling force of the moped 2.

Looking at the above, the present invention has at least the following advantages and effects: 1. When the pedal is being stepped, the helical gear C rotates counterclockwise, and the helical sliding gears D and E are axially displaced to the left end A1 direction, and the Hall sensor N senses a high. The voltage at the initial value can be transmitted to the motor O to output the auxiliary power to the chain G1, which in turn drives the chain J to rotate; when the step is reversed, the helical gear C rotates clockwise, and the helical sliding gears D and E are axially displaced to the right end A2 direction. , so that the sensed value quickly returns to the initial value or even lower than the initial value, so that the motor O stops outputting power, and the reverse driving of the chain J rotates clockwise, so that the rear wheel K1 pedals the drum to start the function of the brake, and the anti-stepping brake is achieved. 2. When the outer side of the ratchet disk B and the last reduction gear S1 of the speed reduction mechanism are fixed, and the rear wheel K1 can rotate in the same direction as the rear chain plate, the voltage sensing value can be reversed when stepping Reverse reduction and lower than the initial value, the motor O and the reduction gears Q1, R1, S1 are reversely rotated, thereby driving the ratchet disk B and the chain G1 and the rear wheel to rotate clockwise, and the reverse direction is 3. The axial force is applied. There is a gap between the gasket T and the spiral sliding gear E, which is profitable. Use this gap to control the displacement of the helical sliding gears D, E to the right end A2, when the spiral After the sliding gears D and E are displaced to the right end A2 until after contacting the axial force bearing pad T, the force can be transmitted back to the first transmission shaft A, so that when the reverse step is performed, the helical sliding gear E is transmitted to the first transmission shaft A. The force and the helical sliding gear E cancel the force of the helical gear F to protect the Palin U at both ends of the second transmission shaft L and eliminate the axial thrust on the second transmission shaft L; 4. The helical gear F and the ratchet A fixed angle slip θ is left between the male end and the female end of the disc-matching concave-convex connector Q. When the driving direction is converted from the forward direction to the reverse direction, the male end and the female end of the concave-convex type connector Q are used. The friction generated between the ends causes the concave-convex connector Q to rotate to the dead point, and the helical sliding gear E and the helical sliding gear D generate a reverse thrust, so that the sensing can quickly return to the initial value or even decrease in the reverse direction. Below the initial value, the motor O and the reduction gears Q1, R1, S1 stop rotating, and then the helical gear F continues to rotate clockwise to a non-slip angle, and then starts the ratchet disk B and the chain plate by the concave-convex type connector Q. G1 rotates clockwise to avoid the motor O continue when it wants to convert to reverse stepping The drive reduction gears Q1, R1, S1 rotate, causing the rider's frustration.

In conclusion, the present invention can achieve the intended functions and objects, and the detailed description can be implemented by those skilled in the art. However, the above embodiments are merely illustrative of the present invention, and all equivalent structures. Changes may still be made without departing from the scope of the invention.

A‧‧‧First drive shaft

A1‧‧‧ left end

A2‧‧‧right end

H1, H2‧‧‧ pedal crank

C‧‧‧ helical gear

L‧‧‧Second drive shaft

F‧‧‧ helical gear

D‧‧‧Spiral sliding gear

E‧‧‧Spiral sliding gear

T‧‧‧ axial force washer

B‧‧‧ ratchet disk

G1‧‧‧Chain

U‧‧Peilin

S1‧‧‧ reduction gear

L1‧‧‧ Elastomer

M1‧‧‧ magnet

N‧‧‧Hor sensor

W‧‧‧ Medium board

Claims (6)

A power assisted transmission system for a moped includes: at least two pairs of intermeshing gear sets including a first gear set and a second gear set; the first and second gear sets each include a gear and a sliding gear, and at least one The gear set is composed of two helical gears; the gears of the first and second gear sets are fixed on a first transmission shaft, the first transmission shaft is connected with a pedal crank at both ends, and the axial side end of the gear of the second gear set a male end of the concave-convex type connector; the sliding gears of the first and second gear sets are disposed on a second transmission shaft, and the second transmission shaft is respectively meshed and rotated by the gears of the first and second gear sets And an axial translational movement, and an elastic body is arranged on the axial end side; a ring-shaped magnet is sleeved on the sliding gear side of the second gear set, and is subjected to the same force displacement; a Hall sensor is provided On the positive displacement side of the ring magnet, the displacement of the ring magnet is sensed; a ratchet disk is sleeved on the gear end side of the first gear set, and a chain plate is fixed on the side, and a groove is arranged on the inner side. Female end of type connector with concave-convex connector The male ends are matched with each other so that the ratchet disk can be rotated by the forward and reverse directions of the gear of the first gear set; and a drive motor is provided with a speed reduction mechanism at the front end of the output shaft of the motor, and the speed reduction mechanism is composed of a plurality of reduction gears And the last reduction gear is sleeved on the outside of the ratchet disk. A power assisted transmission system for a moped as described in claim 1 The axial force bearing pad is disposed on the side of the gear of the second gear set, and is located on the reverse displacement end side of the sliding gear of the first and second gear sets, and the axial force bearing pad and The second gear tissue has a gap between the sliding gears. The power assisted transmission system of the moped according to claim 1, wherein the male end of the concave-convex type connector and the female end of the concave-convex connector of the ratchet disk have a slip θ. The power assisted transmission system of the moped according to claim 1, wherein the outer side of the ratchet disc and the last reduction gear of the speed reduction mechanism are in a fixed linkage manner. The power assisted transmission system of the moped according to claim 1, wherein a one-way ratchet is disposed between the outer side of the ratchet disc and the last reduction gear of the speed reduction mechanism. The power assisted transmission system of the locomotive of claim 1, wherein the speed reduction mechanism is provided with a clutch structure including a gear shaft, a plurality of reduction gears are sleeved thereon, and a drive is disposed on the end side of the gear shaft a piece, a resilient element and a snap block.