Speed ​​change mechanism for electric vehicle

Abstract

The present invention relates to a transmission mechanism of an electric vehicle. The electric vehicle has a power mechanism, the power mechanism has a main power unit, the main power unit has a main shaft, one end of the main shaft is connected to a driven shaft, the driven shaft is provided with a driving gear and a clutch unit, the clutch unit has a clutch and a sleeve, the sleeve is provided with a driving gear; the power unit is provided with a power output shaft arranged in parallel with the driven shaft, the power output shaft is sleeved with a second power gear, and a first power gear is arranged adjacent to the second power gear; the second power gear is meshed with the driving gear; the first power gear is meshed with the driving gear, the second power gear has a sleeve portion and a protruding portion, a recess is defined between the sleeve portion and the protruding portion; the first power gear is provided with a sleeve portion extending from the recess of the second power gear, the sleeve portion extends into the recess, a bearing is provided between the sleeve portion and the sleeve portion, and a one-way clutch is provided between the sleeve portion and the protruding portion; thereby improving the use effect of the electric vehicle.

Description

Technical Field

[0001] The present invention relates to a transmission mechanism of an electric vehicle, and more particularly to a transmission mechanism of an electric vehicle which can make the electric vehicle switch between a first gear and a second gear smoothly, and can make the power gear of the second gear obtain a larger torque supply. Background Art

[0002] In order to provide convenient controllability for driving electric vehicles (electric motorcycles), electric vehicles are provided with a power mechanism; for example, Taiwan's new patent No. M392137 provides the convenience of dual-power driving control of the first gear and the second gear. However, the new patent No. M392137 will produce a huge sense of frustration when changing from the first gear to the second gear; and when the second gear needs to output a larger torque, the one-way clutch between the first gear and the second gear must be large-scaled; however, due to insufficient space between the first gear and the second gear, a larger one-way clutch cannot be provided, so the torque of the second gear cannot be increased, resulting in poor use of the electric vehicle.

[0003] Therefore, how to provide a transmission mechanism for an electric vehicle to solve the jerking feeling during gear shifting and enable the second gear to output a larger torque to meet driving needs has become an urgent issue to be solved by vehicle manufacturers. Summary of the invention

[0004] [Problems to be solved by the invention]

[0005] The main purpose of the present invention is to provide a transmission mechanism for an electric vehicle, thereby overcoming the shortcomings of the prior electric vehicle, such as the unsmooth switching between the first gear and the second gear, and the insufficient torque output in the second gear.

[0006] [Technical means to solve the problem]

[0007] To this end, some main technical means of the present invention are to provide a transmission mechanism of an electric vehicle, the electric vehicle has a power mechanism, the power mechanism has a main power unit, the main power unit has a main shaft, one end of the main shaft is connected to a driven shaft, the driven shaft is provided with a driving gear and a clutch unit, the clutch unit has a clutch and a sleeve, the sleeve is provided with a driving gear; the power unit is provided with a power output shaft arranged in parallel with the driven shaft, the power output shaft is provided with a second power gear, and a first power gear is provided on the adjacent side of the second power gear; the second power gear is meshed with the driving gear; the first power gear is meshed with the driving gear, the second power gear has a sleeve portion and a protrusion, a recess is defined between the sleeve portion and the protrusion; the first power gear is extended with a sleeve portion in the recess of the second power gear, the sleeve portion extends into the recess, a bearing is interposed between the sleeve portion and the sleeve portion, and a one-way clutch is interposed between the sleeve portion and the protrusion.

[0008] To this end, some main technical means of the present invention are to provide a transmission mechanism for an electric vehicle, wherein the one-way clutch is disposed at the center position where the sleeve portion of the first power gear overlaps the protrusion of the second power gear.

[0009] To this end, some main technical means of the present invention are to provide a transmission mechanism for an electric vehicle. When viewed from the axial direction of the aforementioned power output shaft, the one-way clutch is located at the center position where the sleeve portion of the first power gear overlaps with the protrusion of the second power gear.

[0010] To this end, some main technical means of the present invention are to provide a transmission mechanism for an electric vehicle. When viewed from the radial direction of the aforementioned power output shaft, the one-way clutch is located at the center position where the sleeve portion of the first power gear overlaps the protrusion of the second power gear.

[0011] To this end, some main technical means of the present invention are to provide a speed change mechanism for an electric vehicle, wherein the outer periphery of the bearing is respectively limited by the sleeve portion and the sleeve portion.

[0012] To this end, some main technical means of the present invention are to provide a speed change mechanism for an electric vehicle, wherein the outer periphery of the one-way clutch is respectively restricted by the sleeve portion and the protruding portion.

[0013] To this end, some main technical means of the present invention are to provide a speed change mechanism for an electric vehicle, wherein an oil passage is radially opened on the end side of the sleeve portion of the power output shaft adjacent to the second power gear, and the sleeve portion of the second power gear has an oil passage in an oblique direction from the inside to the end side, and the oil passage is connected to the flow passage.

[0014] To this end, some main technical means of the present invention are to provide a speed change mechanism for an electric vehicle, wherein a gasket and a buckle are provided on the outer side of the sleeve end of the second power gear.

[0015] [Effects of the invention]

[0016] The effects that can be achieved by the present invention through some main technical means are: the electric vehicle can be made to change speed more smoothly, and at the same time, the recess can have sufficient accommodation space to accommodate the larger one-way clutch, so that the second power gear can obtain a larger torque supply, thereby improving the use effect of the electric vehicle.

[0017] The present invention can achieve the effect of some main technical means: thereby avoiding the bearing and the one-way clutch from being worn out during operation and making the clutch engage more smoothly.

[0018] The present invention can achieve the following effects by means of some main technical means: thereby ensuring the concentricity of the bearing and preventing the bearing from being worn due to deflection during operation.

[0019] The present invention can achieve the effect of some main technical means: thereby avoiding the situation where the one-way clutch is worn out during operation and making the clutch engage more smoothly.

[0020] The present invention can achieve the effect of ensuring the lubrication effect of the bearing during operation by means of some main technical means.

[0021] The effect that can be achieved by the present invention through some main technical means is that the maintainability of the bearing can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a side view schematic diagram of the electric vehicle of the present invention.

[0023] Figure 2 It is a three-dimensional diagram of the power mechanism of the electric vehicle of the present invention.

[0024] Figure 3 It is a three-dimensional view of the power mechanism of the present invention, taken along the line A-A.

[0025] Figure 4 It is an enlarged view of the power output shaft, the first power gear and the second power gear of the present invention.

[0026] Figure 5 , 6 It is a schematic diagram of the first gear operation of the power mechanism of the present invention.

[0027] Figure 7 It is a schematic diagram of the second gear operation of the power mechanism of the present invention.

[0028] Reference numerals list

[0029] 1. Electric Vehicles

[0030] 11: Frame unit

[0031] 111: Main pipe 112: Left pedal pipe

[0032] 113: Right foot pedal

[0033] 114: Rear frame

[0034] 1141: Rising part 1141a: Horizontal pipe

[0035] 1142: Side frame

[0036] 12: Head tube

[0037] 121: Steering mechanism

[0038] 13: Front fork unit

[0039] 14: Front wheel

[0040] 15: Rear wheel

[0041] 16: Seat

[0042] 17: Body cover unit

[0043] 171: hood 172: front body cover

[0044] 173: Knee cover 174: Footrest

[0045] 175: Bottom cover 176: Side body cover

[0046] 177: Central body cover

[0047] 18: Storage Box

[0048] 19: Footrest

[0049] 2: Power mechanism

[0050] 21: Driving parts

[0051] 3: Main power unit

[0052] 31: Spindle

[0053] 32: Driven shaft

[0054] 33: Driving gear

[0055] 34: Transmission box

[0056] 4: Clutch unit

[0057] 41: Clutch

[0058] 42: sleeve 421: driving gear

[0059] 43: Operating parts

[0060] 5: First power gear

[0061] 51: socket part

[0062] 6: Second power gear

[0063] 61: sleeve part 611: flow channel

[0064] 62: Protrusion

[0065] 63: Concave

[0066] 7: Power output shaft

[0067] 71: Oil passage

[0068] 8: Bearings

[0069] 9: One-way clutch

[0070] C: Battery

[0071] M: buckle

[0072] T: Accommodation space

[0073] P: Gasket. DETAILED DESCRIPTION

[0074] To make it easier to understand the structure and effects of the present invention, the following description is provided in conjunction with the accompanying drawings.

[0075] First, see Figure 1As shown, the electric vehicle 1 of the present invention has a frame unit 11 with a head tube 12 arranged in front, a steering mechanism 121 arranged above the head tube 12, a front fork unit 13 including a front shock absorber connected below the steering mechanism 121, a front wheel 14 pivotally arranged below the front fork unit 13, a main tube 111 extending from the head tube 12 toward the rear of the vehicle body, a pedal tube extending from the main tube 111 toward the rear of the vehicle body, and the pedal tube is a left A pair of left pedal tubes 112 and right pedal tubes 113 are provided, and a pair of left and right rear frames 114 are provided toward the rear of the vehicle body. The rear frames 114 have a rising portion 1141 and a side frame portion 1142. A cross tube 1141a is provided between the rising portions 1141. A rear wheel 15 is provided at the rear lower part of the rear frame 114. A power mechanism 2 is provided on one side of the rear wheel 15. The power mechanism 2 can drive The rear wheel 15 is used to make the electric vehicle 1 move forward; a seat portion 16 is provided behind the steering mechanism 121 and above the rear wheel 15, and the seat portion 16 is spaced apart from the steering mechanism 121; a body cover unit 17 is provided on the periphery of the electric vehicle 1, and the body cover unit 17 has a front cover 171 covering the steering mechanism 121, a front cover 172 provided below the front cover 171 and covering the front end of the vehicle body, and a front cover 173 provided on the front body A knee shield 173 is provided at the rear of the cover 172, and a footrest 174 is provided below the steering mechanism 121 and the seat portion 16. A bottom cover 175 is provided below the footrest 174. The electric vehicle 1 is provided with side body covers 176 on both sides below the seat portion 16, and a central body cover 177 is provided below the front end of the seat portion 16. A storage box 18 is provided below the seat portion 16, and the top of the storage box 18 is shielded by the seat portion 16.

[0076] like Figure 1 As shown, the footrest 174 can form a footrest 19, and the footrest 19 can be used for the rider to rest his feet; the seat portion 16, the central body cover 177 and the rising portion 1141 of the frame unit 11 can define a accommodating space T, and the battery C is accommodated in the accommodating space T. The battery C is electrically connected to the power mechanism 2, thereby providing power to the power mechanism 2 to drive the rear wheel 15 to rotate through the driving member 21; thereby, the power mechanism 2 can be started by a control device (not shown in the figure) provided on the steering mechanism 121, and the rear wheel 15 can be driven to rotate through the driving member 21, thereby making the electric vehicle 1 travel.

[0077] like Figure 2 , 3 As shown, the power mechanism 2 includes a main power unit 3, a clutch unit 4 that can be driven by the main power unit 3, a first power gear 5 and a second power gear 6 that can be driven by the main power unit 3, and a power output shaft 7 that can be driven by the second power gear 6.

[0078] like Figure 2 , 3 As shown, the main power unit 3 of the present invention is an electric motor for illustration, and the main power unit 3 has a main shaft 31 (driving shaft), one end of the main shaft 31 is connected to a driven shaft 32, a driving gear 33 is provided on the driven shaft 32 adjacent to the main shaft 31, and the clutch unit 4 is provided on the other end of the driven shaft 32 away from the driving gear 33; a transmission box 34 is provided on one side of the main power unit 3, and the driven shaft 32, the clutch unit 4, the first power gear 5, the second power gear 6 and the power output shaft 7 are all arranged in the transmission box 34.

[0079] like Figure 2 , 3 As shown, the clutch unit 4 has a clutch 41 that can be disengaged and activated, which can be driven by the clutch 41 and slide-fit with a sleeve 42 on the driven shaft 32; the clutch 41 is connected to the driven shaft 32, so that the clutch 41 rotates synchronously with the driven shaft 32, and the clutch 41 is controlled by an operating member 43 that can make the clutch 41 perform a clutch action; the sleeve 42 is sleeved on the driven shaft 32 in a sliding manner, and more specifically, the sleeve 42 is located between the clutch 41 and the drive gear 33 on the driven shaft 32. When the clutch 41 is controlled by the operating member 43 to be in a closed state, the clutch 41 can drive the sleeve 42 to rotate, and the sleeve 42 is provided with a driving gear 421 extending toward the direction of the drive gear 33.

[0080] like Figure 2 , 34, the power output shaft 7 is parallel to the driven shaft 32 and is borne in the transmission box 34; the second power gear 6 is sleeved on the power output shaft 7 in a tight fit manner, and further, the second power gear 6 has a sleeve portion 61 near the center, and the second power gear 6 is provided with a protrusion 62 extending toward the outer periphery and spaced from and in the same direction as the sleeve portion 61, and a recess 63 with an accommodating space can be defined between the protrusion 62 and the sleeve portion 61, and the outer periphery of the second power gear 6 is engaged with the driving gear 421 of the sleeve 42; the first power gear 5 is arranged on the adjacent side of the second power gear 6, and the outer periphery of the first power gear 5 is meshed with the driving gear 33. More specifically, the first power gear 5 is located between the second power gear 6 and the main shaft 31, the first power gear 5 is provided with a sleeve portion 51 protruding toward the recessed portion 63 of the second power gear 6, a bearing 8 is provided between the sleeve portion 51 of the first power gear 5 and the sleeve portion 61 of the second power gear 6, the outer periphery of the bearing 8 (upper and lower directions in the figure) is respectively limited by the sleeve portion 51 and the sleeve portion 61, so that the concentricity of the bearing 8 can be ensured, and the situation of eccentricity and wear during operation can be avoided. The bearing 8 of the present invention is illustrated by a needle bearing; a one-way clutch 9 is provided between the sleeve portion 51 of the first power gear 5 and the protruding portion 62 of the second power gear 6, and the outer periphery of the one-way clutch 9 (upper and lower directions in the figure) can be The sleeve portion 51 and the protrusion 62 are limited, so the one-way clutch 9 can be prevented from being worn due to the deflection during operation; the recess 63 of the second power gear 6 has enough accommodating space, so it can accommodate a larger one-way clutch 9, so that the second power gear 6 can obtain a larger torque supply; the one-way clutch 9 means that after the first power gear 5 is driven by the driving gear 33 to rotate, the second power gear 6 can be driven to rotate by the one-way clutch 9, otherwise the second power gear 6 cannot be driven to rotate by the one-way clutch 9; the one-way clutch 9 is arranged between the sleeve portion 51 of the first power gear 5 and the protrusion 62 of the second power gear 6 The overlapping center position, that is, viewed from the axial direction or radial direction of the power output shaft 7, the one-way clutch 9 is located at the overlapping center position of the sleeve portion 51 of the first power gear 5 and the protruding portion 62 of the second power gear 6, which can prevent the one-way clutch 9 from being worn due to the deflection during operation. Since the sleeve portion 61 of the second power gear 6, the sleeve portion 51 of the first power gear 5, the bearing 8, the sleeve portion 51 of the first power gear 5, the one-way clutch 9 and the protruding portion 62 of the second power gear 6 are arranged in an overlapping manner, the space of the transmission box 34 can be compacted, so the transmission box 34 does not need to be enlarged due to the enlargement of the one-way clutch 9.It is worth mentioning that the gear ratio of the driving gear 33 meshed with the first power gear 5 is different from the gear ratio of the sleeve 42 driving gear 421 meshed with the second power gear 6, and the rotation speed of the second power gear 6 when driven by the sleeve 42 driving gear 421 is higher than the rotation speed of the second power gear 6 when driven by the first power gear 5.

[0081] like Figure 2 , 3 As shown in Figures 4 and 5, an oil passage 71 is radially provided on the end side of the sleeve portion 61 of the second power gear 6 adjacent to the power output shaft 7. A flow channel 611 is obliquely provided from the inside to the end side of the sleeve portion 61 of the second power gear 6. The oil passage 71 is communicated with the flow channel 611, whereby the lubricating oil used in the lubricating mechanism can flow in from the oil passage 71 and the flow channel 611 to lubricate the bearing 8. A gasket P and a retaining ring M are provided on the outer side of the sleeve portion 61 of the second power gear 6. The gasket P and the retaining ring M can enable the bearing 8 to obtain a stable positioning effect between the sleeve portion 51 of the first power gear 5 and the sleeve portion 61 of the second power gear 6. When maintenance is required, the bearing 8 can be removed for maintenance by simply removing the gasket P and the retaining ring M.

[0082] like Figure 2 , 3 As shown in Figures 5 and 6, the power mechanism 2 of the present invention is used as a mode. After the main power unit 3 is started, the main shaft 31 drives the driven shaft 32 to rotate. At this time, the driving gear 33 rotates synchronously with the clutch unit 4 and the clutch 41. Since the first power gear 5 is meshed with the driving gear 33, the driving gear 33 drives the first power gear 5 to rotate. After the first power gear 5 is driven by the driving gear 33 to rotate, the second power gear 6 can be driven to rotate by the one-way clutch 9. The second power gear 6 simultaneously drives the power output shaft 7 to rotate and the sleeve 42 of the clutch 41 to rotate freely on the driven shaft 32. At this time, the clutch 41 is in a disengaged state, and the power output shaft 7 can drive the rear wheel 15 to rotate by the driving member 21, so as to make the electric vehicle 1 travel. At this time, the power system of the electric vehicle 1 is mediated by the first power gear 5, and it is the first gear driving mode of the power mechanism 2 used as a mode of the present invention.

[0083] like Figure 2 , 3As shown in Figures 7 and 8, when the driver wants to drive the electric vehicle 1 in the second gear, the driver operates the operating member 43 of the clutch unit 4 to make the clutch 41 of the clutch unit 4 enter the closed state. When the clutch 41 enters the closed state, the clutch 41 can drive the sleeve 42 to rotate, and the driving gear 421 of the sleeve 42 is meshed with the second power gear 6. Therefore, the second power gear 6 drives the sleeve 42 on the driven shaft 32 by the first gear driving mode, and in turn, the sleeve 42 actively drives the second power gear 6 to rotate, and the second power gear 6 can drive the power output shaft 7 rotates, the power output shaft 7 can drive the rear wheel 15 to rotate through the driving member 21. Since the speed of the second power gear 6 when driven by the driving gear 421 of the sleeve 42 is higher than the speed of the second power gear 6 when driven by the first power gear 5, and the second power gear 6 cannot drive the first power gear 5 to rotate through the one-way clutch 9, the first power gear 5 is driven by the driving gear 33 to rotate by itself. At this time, the power system of the electric vehicle 1 is composed of the main shaft 31, the driven shaft 32, the clutch unit 4 and the second power gear 6, which enables the power mechanism 2 to be used as the second gear driving mode of the mode.

[0084] The main effect of the present invention is that the electric vehicle 1 has a power mechanism 2, the power mechanism 2 has a main power unit 3, the main power unit 3 has a main shaft 31, one end of the main shaft 31 is connected to a driven shaft 32, the driven shaft 32 is provided with a driving gear 33 and a clutch unit 4, the clutch unit 4 has a clutch 41 and a sleeve 42, the sleeve 42 is provided with a driving gear 421; the power unit 3 is provided with a power output shaft 7 arranged in parallel with the driven shaft 32, the power output shaft 7 is provided with a second power gear 6, and the second power gear 6 is provided with a first power gear 5 adjacent to the second power gear 6; the second power gear 6 is engaged with the driving gear 421; the first power gear 5 is engaged with the driving gear 33 The second power gear 6 has a sleeve portion 61 and a protruding portion 62, and a recess 63 is defined between the sleeve portion 61 and the protruding portion 62; the first power gear 5 is provided with a sleeve portion 51 extending from the recess 63 of the second power gear 6, and the sleeve portion 51 is extended into the recess 63, and a bearing 8 is disposed between the sleeve portion 51 and the sleeve portion 61, and a one-way clutch 9 is disposed between the sleeve portion 51 and the protruding portion 62; thereby, on the one hand, the smoothness of the speed change of the electric vehicle 1 can be improved, and on the other hand, the recess 63 can have sufficient accommodating space to accommodate the larger one-way clutch 9, so that the second power gear 6 can obtain a larger torque supply, thereby improving the use effect of the electric vehicle 1.

[0085] In summary, the present invention can improve the known shortcomings and achieve the desired purpose through the above-mentioned structure, and has indeed improved the efficacy compared with the existing ones. It is obvious that it has novelty, practicality and creativity.

Claims

1. A transmission mechanism of an electric vehicle, the electric vehicle having a power mechanism, the power mechanism having a main power unit, the main power unit having a main shaft, one end of the main shaft being connected to a driven shaft, the driven shaft being provided with a driving gear and a sleeve having a clutch unit, the clutch unit having a clutch and a sleeve, the sleeve being provided with a driving gear; the power unit being provided with a power output shaft arranged parallel to the driven shaft, the power output shaft being sleeved with a second power gear, the adjacent side of the second power gear being provided with a first power gear; the second power gear being meshed with the driving gear; the first power gear being meshed with the driving gear, characterized in that The second power gear has a sleeve portion and a protruding portion, and a recess is defined between the sleeve portion and the protruding portion; the first power gear is provided with a sleeve portion extending from the recess of the second power gear, and the sleeve portion extends into the recess, a bearing is disposed between the sleeve portion and the sleeve portion, and a one-way clutch is disposed between the sleeve portion and the protruding portion.

2. The speed change mechanism of an electric vehicle according to claim 1, characterized in that: The one-way clutch is disposed at a central position where the sleeve portion of the first power gear overlaps the protruding portion of the second power gear.

3. The speed change mechanism of an electric vehicle according to claim 2, characterized in that: When viewed from the axial direction of the aforementioned power output shaft, the one-way clutch is located at the center position where the sleeve portion of the first power gear and the protrusion of the second power gear overlap.

4. The speed change mechanism of an electric vehicle according to claim 2 or 3, characterized in that: When viewed from the radial direction of the power output shaft, the one-way clutch is located at the center position where the sleeve portion of the first power gear and the protrusion of the second power gear overlap.

5. The speed change mechanism of an electric vehicle according to claim 1, characterized in that: The outer circumference of the bearing is restricted by the sleeve connection portion and the sleeve setting portion respectively.

6. The speed change mechanism of an electric vehicle according to claim 1, characterized in that: The outer periphery of the one-way clutch is restricted by the sleeve portion and the protruding portion respectively.

7. The speed change mechanism of an electric vehicle according to claim 1, characterized in that: An oil passage is radially opened on the end side of the sleeve portion of the power output shaft adjacent to the second power gear, and the sleeve portion of the second power gear has a flow passage in an oblique direction from the inside to the end side, and the oil passage is connected to the flow passage.

8. The speed change mechanism of an electric vehicle according to claim 1 or 7, characterized in that: A gasket and a buckle ring are arranged on the outer side of the sleeve end of the second power gear.

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