TWI863044B - Electric motorcycle rear suspension - Google Patents

Abstract

The present invention relates to a rear suspension mechanism of an electric motorcycle. The electric motorcycle has at least a frame unit, a seat unit is provided on the frame unit, a battery box containing batteries is provided below the seat unit, a power unit is locked on the frame unit below the battery box; a rear swing arm is pivoted on the frame unit, a rear wheel is pivoted at the end of the rear swing arm; a rear shock absorber is pivoted between the rear swing arm and the frame unit; when viewed from the side of the vehicle body, the rear shock absorber is located in front of the rear wheel and behind the battery box and the power unit; thereby, the weight of the rear shock absorber can be concentrated on the battery box and the power unit, so that the front and rear and left and right weights of the electric motorcycle are concentrated on the center of the vehicle body, thereby improving the controllability of the electric motorcycle.

Description

Rear suspension mechanism of electric motorcycle

The present invention relates to a rear suspension mechanism for an electric motorcycle, and in particular to a rear suspension mechanism for an electric motorcycle that can concentrate the weight of the rear shock absorber to the battery box and the power unit, thereby improving the maneuverability of the electric motorcycle.

As shown in FIG1 , the electric motorcycle 1 has at least a frame unit 11, on which a power unit 12 that can be driven by electricity is disposed, the power unit 12 is provided with a rear swing arm 13, and a rear wheel 14 is disposed toward the rear end of the vehicle body, and a rear shock absorber 15 (rear suspension mechanism) connected between the rear swing arm 13 and the frame unit 11 is disposed on one side of the rear wheel 14; the outer cover of the electric motorcycle 1 is provided with a vehicle body cover unit 16; the power unit 12 has a motor 121 and a transmission part 122, and the power unit 12 drives the rear wheel 14 to rotate through a driving member 123, so that the electric motorcycle 1 can achieve the purpose of driving.

As shown in FIG1 , the electric motorcycle 1 can achieve the purpose of driving by the above structure; however, the rear shock absorber 15 is arranged near the end of the body of the electric motorcycle 1, which will cause the body of the electric motorcycle 1 to be enlarged; and the power unit 12 and the rear shock absorber 15 are arranged at a considerable distance, and the rear shock absorber 15 has a certain weight, which will increase the weight of the rear wheel 14 of the electric motorcycle 1, which is not conducive to the weight ratio of the front and rear axles of the electric motorcycle 1, thereby causing the control of the electric motorcycle 1 to deteriorate; because the rear shock absorber 15 is arranged near the end of the body of the electric motorcycle 1, the body cover unit 16 must be restricted and matched with the setting of the rear shock absorber 15, thereby causing the overall appearance of the electric motorcycle 1. The product design is severely restricted.

Therefore, how to provide a rear suspension mechanism for an electric motorcycle to improve the overall weight ratio of the electric motorcycle and enhance the controllability and driving safety of the electric motorcycle.

The main purpose of the present invention is to provide a rear suspension mechanism for an electric motorcycle, thereby overcoming the disadvantage of poor handling caused by the dispersion of the center of gravity of conventional electric motorcycles.

To this end, some technical means of the present invention are to provide a rear suspension mechanism of an electric motorcycle, the electric motorcycle at least having a frame unit, a seat unit is provided on the frame unit, a battery box containing a battery is provided below the seat unit, a power unit is locked on the frame unit below the battery box; a rear swing arm is pivoted on the frame unit, a rear wheel is pivoted at the end of the rear swing arm; a rear shock absorber is pivoted between the rear swing arm and the frame unit; when viewed from the side of the vehicle body, the rear shock absorber is located in front of the rear wheel and behind the battery box and the power unit.

To this end, some technical means of the present invention are to provide a rear suspension mechanism of an electric motorcycle, wherein the power unit has a power motor and a transmission part; a recess can be formed between the power motor and the transmission part, and at least a part of the rear shock absorber is arranged within the range defined by the recess; and when viewed from the side of the vehicle body, at least a part of the rear shock absorber and the power unit overlap.

To this end, some technical means of the present invention are to provide a rear suspension mechanism of an electric motorcycle. When viewed from the side of the vehicle body, the rear shock absorber is located between the battery box and the rear wheel, and is arranged closer to the battery box.

To this end, some technical means of the present invention are to provide a rear suspension mechanism for an electric locomotive, wherein the power motor and the transmission part are respectively arranged on one side of the center line of the vehicle body in the front-rear direction.

To this end, some technical means of the present invention are to provide a rear suspension mechanism of an electric motorcycle, wherein the rear swing arm has a connecting seat, and one end of the connecting seat is connected to the lower end of the rear shock absorber.

To this end, some technical means of the present invention are to provide a rear suspension mechanism of an electric motorcycle, wherein the frame unit is further provided with a connecting portion, the connecting portion is connected to a connecting rod, the connecting rod is connected to a connecting frame, one end of the connecting frame is connected to the connecting rod, and the other end is connected to the rear swing arm, and the last end of the connecting frame is connected to the lower end of the rear shock absorber.

To this end, some technical means of the present invention are to provide a rear suspension mechanism of an electric motorcycle, wherein a controller is provided on the frame unit; when viewed from the side of the vehicle body, at least a portion of the rear shock absorber overlaps with the controller.

The invention can achieve the following effect by some technical means: the weight of the rear shock absorber can be concentrated to the battery box and the power unit, so that the front and rear and left and right weight of the electric motorcycle can be concentrated to the center of the vehicle body, thereby improving the controllability of the electric motorcycle.

The invention can achieve the following effect by some technical means: thereby ensuring that the weight of the rear shock absorber can be concentrated on the battery box and the power unit, thereby improving the controllability of the electric motorcycle.

The invention can achieve the following effect by some technical means: by not installing the rear shock absorber at the rear of the electric motorcycle body, the design freedom of the rear of the electric motorcycle body can be greatly improved, and the storage box can be enlarged.

The invention can achieve the effect of achieving a balanced configuration of the left and right weights of the electric motorcycle body by means of some technical means.

The invention can achieve the effect of simplifying the connection and installation of the rear shock absorber by some technical means.

The invention can achieve the effect of improving the riding comfort of the electric motorcycle by some technical means.

The invention can achieve the following effect through some technical means: by moving the controller toward the front of the vehicle body, it can ensure that the center of gravity of the entire vehicle can be concentrated on the battery box and the power unit, thereby improving the controllability of the electric motorcycle.

1: Electric motorcycle

11: Frame unit

12: Power unit

121: Motor

122: Transmission unit

123: Driving parts

13: Back swing arm

14: Rear wheel

15:Rear shock absorber

16: Body cover unit

2: Electric motorcycle

21: Frame unit

211: Head tube

212: Supervisor

213: pedal tube

214: Side frame tube

2141: Rising pipe section

2142: Rear frame tube

215: Auxiliary tube

2151:Support frame

216: Power unit locking pipe assembly

2161:Connection

217: Auxiliary tube

218: Locking frame

22: Steering mechanism

23: Front fork unit

24:Front wheel

25: Rear wheel

3: Power unit

31: Power motor

32: Transmission unit

33: Back swing arm

34: Driving parts

4: Controller

5:Battery box

51:Battery

6: Seat cushion unit

7: Storage box

8:Rear shock absorber

A: Connecting rod

A1: Connecting seat

B:Connection frame

C: Vehicle centerline

P: Concave part

〔Figure 1〕is a diagram of an electric motorcycle.

[Figure 2] is a schematic diagram of the electric vehicle of the present invention with the body cover removed.

[Figure 3] is a partial enlarged view of the rear shock absorber connection installation of the present invention.

[Figure 4] is a top view of the rear shock absorber of the present invention after installation.

[Figure 5] is another embodiment of the rear shock absorber connection installation of the present invention.

〔Figure 6〕is an enlarged view of the rear shock absorber connection installation part in Figure 5.

In order to make it easier for you, the examiner, to understand the structure of the present invention and the effects that can be achieved, the following diagrams are provided;

First, please refer to FIG. 2 , the rear suspension mechanism of the electric motorcycle of the present invention, the electric motorcycle 2 at least has a frame unit 21, the frame unit 21 has a head tube 211, a steering mechanism 22 is arranged above the head tube 211, the lower part of the steering mechanism 22 is connected to a front fork unit (front shock absorber) 23, the lower part of the front fork unit 23 is pivoted with a front wheel 24, the frame unit 21 has a main tube 212 extending from the head tube 211 toward the rear and downward of the vehicle body, the main tube 212 is extended to a pair of left and right flat pedal tubes 213 further toward the rear of the vehicle body, and a pair of left and right side frame tubes 214 are extended from the pedal tubes 213 to the rear of the vehicle body, the side frame tubes 214 include a rising tube portion 214 adjacent to the pedal tubes 213 1 and a rear frame tube 2142 extending toward the rear of the vehicle body in a slightly horizontal shape; an upper auxiliary tube 215 extending toward the rear of the vehicle body and slightly parallel to the rear frame tube 2142 is provided above the rising tube 2141; a tube is provided at the rear of the pedal tube 213 and adjacent to the side frame tube 214 in a downward direction to form a The power unit locking tube group 216 is provided, and an auxiliary tube 217 is provided along the vertical direction of the vehicle body between the power unit locking tube group 216 and the upper auxiliary tube 215; a locking frame 218 is provided between the upper rear portion of the pedal tube 213 and the side frame tube 214; the electric motorcycle 2 is provided with a vehicle body cover unit (not shown in the figure) on the outer periphery of the frame unit 21.

As shown in FIGS. 2, 3 and 4, the power unit locking pipe assembly 216 of the frame unit 21 is locked with a power unit 3 for providing power to the electric motorcycle 2; the power unit 3 has an electric power motor 31 and a transmission part 32 driven by the power motor 31. The power motor 31 and the transmission part 32 are arranged in an approximately L-shaped manner. More specifically, the power motor 31 is arranged in the width direction of the vehicle body, and the transmission part 32 is connected to one side of the power motor 31, that is, The transmission part 32 is arranged in the front-rear direction of the vehicle body, that is, the transmission part 32 and the power motor 31 are respectively located on both sides of the center line C of the front-rear direction of the vehicle body, so that the left and right center of gravity of the vehicle body of the electric motorcycle 2 can be balanced, and a slightly L-shaped recess P is formed between the power motor 31 and the transmission part 32 toward the rear side of the vehicle body; the rear swing arm 33 is centrally arranged on the frame unit 21 or the transmission part 32 of the power unit 3 is centrally arranged on the rear swing arm 33. For example, the rear swing arm 33 is pivoted on the frame unit 21. The rear wheel 25 is pivoted at the end of the rear swing arm 33. The transmission part 32 drives the rear wheel 25 to rotate through the driving member 34. The power unit 3 is electrically connected to a controller 4. The controller 4 controls the operation of the power motor 31. The controller 4 is locked on the rear frame tube 2142 of the frame unit 21 adjacent to the upper auxiliary tube 215. The locking frame 218 is connected to the side frame tube 214. 14, the power unit 3 is located below the battery box 5, and the battery box 5 contains a battery 51 for supplying power to the power unit 3. Furthermore, the power motor 31 of the power unit 3 is electrically connected to the controller 4, and the controller 4 is electrically connected to the battery 51, thereby obtaining power to control the operation of the power unit 3, so that the transmission part 32 of the power unit 3 can drive the rear wheel 25 to rotate through the driving member 34.

As shown in Figs. 2, 3 and 4, a seat unit 6 for a driver to sit on is provided on the rear frame tube portion 2142 of the side frame tube 214 of the frame unit 21; a storage box 7 for storing items is provided below the seat unit 6 and between the left and right rear frame tube portions 2142, and the battery box 5 is located at the front and lower part of the seat unit 6; the power unit locking pipe assembly 216 is provided with a connecting portion 2161, and the connecting portion 2161 is connected to a connecting rod A, and the connecting rod A is connected to a connecting frame B. The connecting frame B is illustrated in the present invention by taking a triangular frame as an example, and the connecting frame B has a One end is connected to the connecting rod A, and the other end is connected to the rear swing arm 33. The last end of the connecting frame B is connected to the rear shock absorber 8 (rear suspension mechanism). More specifically, the lower end of the rear shock absorber 8 is connected to the connecting frame B, and the upper end of the rear shock absorber 8 is connected to the support frame 2151 of the upper auxiliary tube 215; that is, the rear shock absorber 8 is arranged in the vertical direction of the vehicle body within the range defined by the recess P formed between the power motor 31 and the transmission part 32 toward the rear side of the vehicle body. More specifically, at least a part of the rear shock absorber 8 is arranged between the power motor 31 and the transmission part 32 toward the rear side of the vehicle body. Within the range defined by the recessed portion P formed on the rear side of the vehicle body, when viewed from the side of the vehicle body, the rear shock absorber 8 and the power unit 3 at least partially overlap, thereby allowing the rear shock absorber 8 to approach the power unit 3, thereby concentrating the front and rear and left and right center of gravity of the electric motorcycle 2; thereby, the connecting portion 2161, the connecting rod A, the connecting frame B and the rear shock absorber 8 form a six-link mechanism, thereby improving the riding comfort of the electric motorcycle 2; when viewed from the side of the vehicle body, the rear shock absorber 8 is located between the battery box 5 and the rear wheel 25, and is disposed closer to the battery box 5. The rear shock absorber 8 and the controller 4 at least partially overlap, so that the controller 4 is moved toward the front of the vehicle body, and the center of gravity of the entire vehicle can be concentrated on the battery box 5 and the power unit 3 to improve the controllability of the electric motorcycle 2. The rear shock absorber 8 of the present invention is overlapped with the controller 4 at least at the upper part. After the rear shock absorber 8 is installed, the power unit 3 and the rear shock absorber 8 can be centrally installed at the center of the vehicle body of the electric motorcycle 2, so that the center of gravity of the entire electric motorcycle 2 can be concentrated, thereby improving the controllability of the electric motorcycle 2.

As shown in Figures 5 and 6, the rear shock absorber 8 of the present invention is provided with another embodiment, the rear swing arm 33 is connected to a connecting seat A1, the other end of the connecting seat A1 is connected to the lower end of the rear shock absorber 8, and the upper end of the rear shock absorber 8 is connected to the support frame 2151 of the upper auxiliary pipe 215; thereby, the connecting seat A1 on the rear swing arm 33 and the rear shock absorber 8 can form a four-link mechanism, which can simplify the connection structure of the rear shock absorber 8 and reduce the cost, and at the same time can also slightly ensure the riding comfort of the electric motorcycle 2.

The present invention mainly comprises: an electric motorcycle 2 having at least a frame unit 21, a seat unit 6 being provided on the frame unit 21, a battery box 5 containing a battery 51 being provided below the seat unit 6, a power unit 3 being locked on the frame unit 21 below the battery box 5; a rear swing arm 33 being pivotally provided on the frame unit 21, a rear wheel 25 being pivotally provided at the end of the rear swing arm 33; the rear swing arm 33 and the rear wheel 25 being pivotally provided at the rear wheel 25; the rear swing arm 33 and the rear wheel 25 are connected to each other. The rear shock absorber 8 is centrally arranged between the frame unit 21; when viewed from the side of the vehicle body, the rear shock absorber 8 is located in front of the rear wheel 25 and behind the battery box 5 and the power unit 3; thereby, the weight of the rear shock absorber 8 can be concentrated on the battery box 5 and the power unit 3, so that the front and rear and left and right weights of the electric motorcycle 2 are concentrated on the center of the vehicle body, thereby improving the controllability of the electric motorcycle 2.

In summary, this invention can improve the deficiencies of common knowledge and achieve the claimed purpose through the above-mentioned structure. It has indeed improved the efficacy of the conventional ones and has obviously possessed the requirements of novelty, practicality and advancement. Therefore, I have filed an invention application in accordance with the law and pray for the detailed evaluation of the examiner and the approval of the patent. I am very grateful.

2: Electric motorcycle

21: Frame unit

211: Head tube

212: Supervisor

213: pedal tube

214: Side frame tube

2141: Rising pipe section

2142: Rear frame tube

215: Auxiliary tube

2151:Support frame

216: Power unit locking pipe assembly

2161:Connection

217: Auxiliary tube

218: Locking frame

22: Steering mechanism

23: Front fork unit

24:Front wheel

25: Rear wheel

3: Power unit

31: Power motor

32: Transmission unit

33: Back swing arm

34: Driving parts

4: Controller

5:Battery box

51:Battery

6: Seat cushion unit

7: Storage box

8:Rear shock absorber

A: Connecting rod

B:Connection frame

Claims (6)

A rear suspension mechanism of an electric motorcycle, the electric motorcycle at least has a frame unit, a seat unit is provided on the frame unit, a battery box containing a battery is provided below the seat unit, the battery box is located in the front and lower part of the seat unit, a power unit is locked on the frame unit below the battery box, the power unit has a power motor and a transmission part; a rear swing arm is pivoted on the frame unit, a rear wheel is pivoted at the end of the rear swing arm; a rear shock absorber is pivoted between the rear swing arm and the frame unit; when viewed from the side of the vehicle body, the rear shock absorber is located in front of the rear wheel and behind the battery box and the power unit, and the rear shock absorber is located between the battery box and the rear wheel and is arranged closer to the battery box. The rear suspension mechanism of an electric motorcycle as described in claim 1, wherein a recess may be formed between the power motor and the transmission part, and at least a portion of the rear shock absorber is disposed within the range defined by the recess; and when viewed from the side of the vehicle body, at least a portion of the rear shock absorber and the power unit overlap. The rear suspension mechanism of an electric locomotive as described in claim 2, wherein the power motor and the transmission part are respectively arranged on one side of the center line of the vehicle body in the front-rear direction. The rear suspension mechanism of an electric motorcycle as described in claim 1, wherein the rear swing arm has a connecting seat, one end of which is connected to the lower end of the rear shock absorber. The rear suspension mechanism of an electric motorcycle as described in claim 1, wherein the frame unit is further provided with a connecting portion, the connecting portion is connected to a connecting rod, the connecting rod is connected to a connecting frame, one end of the connecting frame is connected to the connecting rod and the other end is connected to the rear swing arm, and the last end of the connecting frame is connected to the lower end of the rear shock absorber. The rear suspension mechanism of an electric motorcycle as described in claim 1 or 5, wherein a controller is provided on the frame unit; when viewed from the side of the vehicle body, at least a portion of the rear shock absorber overlaps with the controller.

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