JPH06344968A - Throttle opening detection device for electric motorcycles - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The structure of the electric motorcycle is simple and the rotation of the grip can be directly transmitted to the detection means. Use the throttle opening detection device. [Structure] A throttle grip 29 provided on a handlebar 5 for steering front wheels 3 and gripped by an occupant, and a rotation shaft 47 rotating with this rotation, and a throttle opening detecting means for electrically detecting a throttle opening. In the throttle opening degree detection device 28 of the electric motorcycle 1 including the control unit 30 and 30, the shaft center of the rotary shaft 47 is aligned with the extension line of the central axis of the throttle grip, and the rotary shaft 47 and the rotary shaft 47 are connected integrally. In addition, a straight pipe portion 32 extending substantially in the vehicle width direction is provided on the handle bar 5.
And a support portion 34 coupled to the intermediate portion and coupled to the steering shaft 33, and the straight pipe portion 32 with the coupling portion 34a interposed therebetween.
A throttle grip 29 is provided on the outer side in the vehicle width direction and a throttle opening detection means 30 is provided on the inner side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a throttle opening detecting device for an electric motorcycle, which adjusts a traveling speed by changing a voltage applied to a traveling motor.

[0002]

2. Description of the Related Art In recent years, electric motorcycles, which have been actively developed, have a large-capacity battery mounted on the vehicle body, and the current of the battery is supplied to an electric motor to drive the drive wheels. It is composed.

As shown in FIG. 7, a handlebar 100 for steering front wheels of an electric motorcycle is provided with a throttle grip 101 rotatably held by an occupant, and a throttle cable extending from the throttle grip 101. A reel 103 is connected to the other end of 102,
Throttle opening detection means 104 is connected to the reel 103. The throttle grip 101, the throttle cable 102, the reel 103, and the throttle opening detecting means 104 are the throttle opening detecting device 1.
05 is configured.

The throttle opening detecting means 104 electrically detects the amount of rotation of the throttle grip 101, that is, the throttle opening. For example, a potentiometer is used. This throttle opening detection means 10
4 is the controller 1 by the wire harness 106
07, and the controller 107 is connected to the battery 111 and the electric motor 112 by the wire harnesses 108 and 109.

A drum (not shown) is provided inside the reel 103, and the drum is rotatably connected to a rotary shaft (not shown) of the throttle opening detecting means 104. Therefore, when an occupant of the electric motorcycle twists and rotates the throttle grip 101, the throttle cable 102 is wound up to rotate the drum, and the rotary shaft of the throttle opening detection means 104 rotates integrally. In this way, the throttle opening is electrically detected.

The detected throttle opening signal is sent to the controller 107, and the controller 107 adjusts the voltage applied from the battery 111 to the electric motor 112 based on the throttle opening signal, whereby the electric motorcycle is driven. The traveling speed is set. Electric motor 112
The voltage applied to the throttle grip 1 is controlled so as to increase as the throttle opening increases.
When 01 is returned, the voltage applied to the electric motor 112 becomes zero.

When the throttle opening detection device 105 is constructed in this way, the parts around the throttle grip 101 can be the same as those of the engine type motorcycle, so that the productivity of the electric type motorcycle can be improved. be able to.

[0008]

On the other hand, on the other hand, the throttle grip 101 and the throttle opening detecting means 10 are provided.
4, the throttle cable 102 and the reel 103 are interposed between them, so that the number of parts is large and the assembling workability is poor, and the cost may be increased. In addition, since the number of parts is large, the weight of the device increases and the failure rate increases.

In addition, looseness is likely to occur at the connection between the throttle grip 101 and the throttle cable 102 and the connection between the throttle cable 102 and the reel 103, which may cause play in the rotation of the throttle grip 101. In such a case, it becomes impossible to apply the maximum voltage to the electric motor 112, and the performance of the electric motor cannot be maximized. Therefore, the acceleration force and the maximum speed of the electric motorcycle are reduced. To prevent this, always use the throttle cable 102
It is necessary to adjust the tension of the, and it takes a lot of trouble to perform maintenance.

Further, since it is necessary to secure a place where the reel 103 and the throttle opening detecting means 104 are installed inside the vehicle body of the electric motorcycle, it may be impossible to layout other components.

The present invention has been made to solve the above-mentioned problems, and has a simple structure and can directly transmit the rotation of the throttle grip to the throttle opening detection means, and further maintenance-free. An object of the present invention is to provide a throttle opening detection device for an electric motorcycle that does not take up a space inside the vehicle body.

Another object of the present invention is to provide a throttle opening detection device for an electric motorcycle which is less likely to be broken or damaged and has high safety.

[0013]

In order to achieve the above object, a throttle opening detecting device for an electric motorcycle according to the present invention is provided with a throttle grip provided on a handlebar for steering front wheels and gripped by an occupant. A throttle opening detecting device for an electric motorcycle, comprising: a throttle opening detecting means for electrically detecting a throttle opening by rotating a rotary shaft as the throttle grip rotates. The center of the rotating shaft is aligned with the extension line of the central axis of the throttle grip, and the rotating shaft and the throttle grip are connected integrally for rotation.

Further, the handlebar is provided with a straight pipe portion extending substantially in the vehicle width direction and a support portion connected to an intermediate portion of the straight pipe portion for connecting the straight pipe portion to the steering shaft. The throttle grip is provided on the outer side in the vehicle width direction of the straight pipe portion with the joint portion of the above-mentioned being sandwiched, and the throttle opening detection means is provided on the inner side in the vehicle width direction of the straight pipe portion.

Further, a connecting shaft that extends along the central axis of the straight pipe portion and is rotatable in the straight pipe portion, and the connecting shaft is rotationally integrated with the rotary shaft of the throttle grip and the throttle opening detecting means. Further, it is characterized in that it is provided with a connecting means for connecting so as to allow a slight relative movement in the axial direction.

A return spring for constantly urging the throttle grip in a direction to reduce the throttle opening is provided.

[0017]

According to the throttle opening detecting device for an electric motorcycle having the above-mentioned structure, the throttle grip and the throttle opening detecting means are connected integrally with each other, so that the structure of the device is simplified and the assembling workability is improved. Can be improved and cost can be reduced. Moreover, since the number of parts is reduced, weight reduction can be achieved and the failure rate is also reduced.

Moreover, since the rotation of the throttle grip is directly transmitted to the throttle opening detecting means, the maximum voltage can be applied to the electric motor and the performance of the electric motor can be maximized.

In addition, since the throttle cable is not required unlike the conventional case, it is not necessary to adjust the tension of the throttle cable, which is maintenance-free and the whole throttle opening detecting device is integrated around the handlebar. Therefore, it is not necessary to secure the related parts of the throttle opening detection device inside the vehicle body of the electric motorcycle as in the conventional case, and there is no fear that the layout of other parts will be unreasonable.

Further, since the throttle grip is provided outside the straight pipe portion in the vehicle width direction and the throttle opening detecting means is provided inside the straight pipe portion in the vehicle width direction, the electric motorcycle should fall over. In this case, no impact is applied to the throttle opening detection means, and there is little concern about damage.

Further, the throttle grip and the throttle opening detecting means are connected integrally by rotation by the connecting shaft, and the connecting shaft is rotationally integrated with the rotary shaft of the throttle grip and the throttle opening detecting means, and slightly in the axial direction. Since the connecting means for connecting so as to be capable of relative movement is provided, dimensional error in the axial direction of the throttle grip, the throttle opening detecting means, and the connecting shaft is absorbed by the relative movement of the connecting shaft in the axial direction.

Therefore, it is possible to increase the manufacturing tolerance of each of the above-mentioned components, and at the same time, to facilitate the assembling of the throttle opening detection device, which leads to cost reduction.

Since the return spring for constantly urging the throttle grip in the direction to reduce the throttle opening is provided, the throttle is forcibly closed at the same time when the occupant releases the throttle grip, and the electric power is supplied to the electric motor. Is stopped. For this reason, the electric motor stops when the occupant is not riding in the electric motorcycle or the running electric motorcycle should fall over,
The safety is enhanced.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a right side view of an electric motorcycle to which the present invention is applied. This electric motorcycle 1
Is configured, for example, in a scooter type, and includes an underbone type body frame 2.

A front wheel 3 is attached to the front head of the vehicle body frame 2.
A front fork 4 for supporting the is attached to a handlebar 5 so as to be rotatable left and right. Further, the rear portion of the vehicle body frame 2 has, for example, a monocoque structure in which a steel plate is press-molded, and inside thereof is an article storage chamber 7 in which the helmet 6 and the like can be stored. 8 is installed so that it can be opened and closed. Between the seat 8 and the handlebar 5, there is a large bay downward, and a step board 9 on which an occupant's foot is placed is provided at this portion. A large-capacity battery 11 is mounted on the lower part of the step board 9, and a controller 12 is installed at the rear of the battery 11.

A pair of left and right stays 14 are provided in the lower rear part of the body frame 2, and an electric power unit 16 is attached to a pivot shaft 15 provided between the stays 14.
The front part of the power unit 16 is pivotally mounted,
A rear wheel 18 is supported on an axle shaft 17 which is pivotally supported on the rear portion. The rear wheel 18 is arranged, for example, on the left side surface side of the power unit 16. The power unit 16 is of a direct drive type in which an electric motor 19 for driving the rear wheels 18 is installed coaxially with the axle shaft 17, for example.

The rear end of the power unit 16 and the rear end of the vehicle body frame 2 are connected by a shock absorber 21, and the movements of the power unit 16 and the rear wheel 18 which rotate around the pivot shaft 15 are buffered. , Is supposed to be restored. A stand device 22 for parking the electric motorcycle 1 is attached to the lower surface of the front portion of the power unit 16.

The body frame 2 and other internal equipment are entirely covered with a synthetic resin frame cover 23.

FIG. 2 is a wiring diagram of the battery 11, the controller 12, and the electric motor 19. The battery 11 is connected to the controller 12 by wire harnesses 24 and 25. In addition, the controller 12
The wire harnesses 26 and 27 extending from are respectively connected to the electric motor 19 and the throttle opening detection device 28 provided on the handlebar 5. The controller 12 controls the electric motor 19 by applying the voltage of the battery 11 to the electric motor 19 based on the throttle opening signal input from the throttle opening detection device 28.

FIG. 3 shows the throttle opening detecting device 28.
1 is a cross-sectional view showing the embodiment of the present invention. 4 and 5 show cross sections taken along line IV-IV and line VV in FIG. 3, respectively.

The throttle opening detecting device 28 is provided on the handle bar 5 so as to be rotatable and is held by an occupant, and the throttle grip 29.
Throttle opening detection means 3 for electrically detecting the amount of rotation of the
It is configured with 0 and.

As shown in FIG. 3, the handlebar 5 has
A straight pipe portion 32 extending substantially in the vehicle width direction and a straight pipe portion 32 connected to an intermediate portion of the straight pipe portion 32, and the straight pipe portion 32 shown in FIG.
3 is provided, the throttle grip 29 is provided on the outer side in the vehicle width direction with the connecting portion 34a of the support portion 34 interposed therebetween, and the throttle grip 29 is provided on the inner side in the vehicle width direction of the straight pipe portion 32. An opening degree detection means 30 is provided.

The throttle grip 29 has the straight pipe portion 3 described above.
2 is composed of a sleeve 35 rotatably inserted into the sleeve 35 and a grip rubber 36 inserted into the outer periphery of the sleeve 35, and an outer flange 37 provided on the inner end of the sleeve 35 is provided. Since it is rotatably held in the throttle housing 38 provided in the straight pipe portion 32, the movement of the throttle grip 29 in the axial direction is restricted.

As shown in FIG. 5, the throttle housing 38 is composed of an upper housing 40 and a lower housing 41, and the upper housing 40 is sandwiched between the lower housing 41 and the straight pipe portion 32.
It is fastened with a screw 42 or the like. The outer flange 37 of the sleeve 35 has a protruding piece 43 extending in the radial direction.
The upper housing 40 and the lower housing 41 are provided with stoppers 44 and 45, respectively, so as to sandwich the projecting piece 43. Therefore, the rotation angle of the sleeve 35, that is, the throttle grip 29 is
The angle θ until the protrusion 43 abuts the stoppers 44 and 45 is limited.

Inside the throttle housing 38, there is provided a return spring 46 which constantly biases the throttle grip 29 in the counterclockwise direction in FIG. The return spring 46 is a coil-shaped spring as shown in FIG. 6, and its hooking end 46 a is located on the side of the projecting piece 43, and the hooking end 46 a.
b is hooked on the throttle housing 38 side, and the projecting piece 43 is brought into contact with the stopper 44 by its urging force.

On the other hand, the throttle opening detecting means 30 is, for example, a potentiometer, and has a throttle grip 29.
A rotary shaft 47 extending to the side projects. The throttle opening detecting means 30 is fixed to a fixing flange 48 provided at the inner end of the straight pipe portion 32 with a screw 49 or the like, and the shaft center of the rotary shaft 47 is on the extension line of the central axis of the throttle grip 29. Are arranged to match.

Inside the straight pipe portion 32, a connecting shaft 51 extending along the central axis of the straight pipe portion 32 is rotatably supported by bearings 52 and 53. Further, connecting means 54, 55 are provided for connecting the connecting shaft 51 to the throttle grip 29 and the rotating shaft 47 so as to be integrally rotated and to be capable of a slight relative movement in the axial direction.

The connecting means 54 and 55 include, for example, slit-like slits 56 and 57 formed at both ends of the connecting shaft 51, an engaging protrusion 58 formed on the throttle grip 29, and throttle opening detection. Rotating shaft 4 of means 30
7 has an engaging convex portion 59 formed so that the engaging convex portions 58 and 59 are engaged with the slits 56 and 57 without play. Therefore, the throttle grip 29 is rotatably integrated with the rotary shaft 47 of the throttle opening detection means 30 via the connecting shaft 51. Here, the relative movement amount of the connecting shaft 51 is represented by Δ shown in FIG.
It is set to L.

In the throttle opening degree detecting device 28 constructed as described above, when an occupant of the electric motorcycle 1 grips and rotates the throttle grip 29, the throttle opening degree detecting means 30 is connected through the connecting shaft 51. Rotating shaft 47
Rotate integrally, and the throttle opening degree is electrically detected inside the throttle opening degree detection means 30. The detected throttle opening signal is sent to the controller 12, and the controller 12 adjusts the voltage applied from the battery 11 to the electric motor 19 based on the throttle opening signal, whereby the traveling speed of the electric motorcycle 1 is adjusted. Is determined.

When the occupant relaxes the grip on the throttle grip 29, the return force of the return spring 46 causes the throttle grip 29 to return. Therefore, the voltage applied to the electric motor 19 drops,
The electric motorcycle 1 decelerates.

Throttle opening detection device 2 having the above structure
According to No. 8, since the throttle grip 29 and the throttle opening degree detection means 30 are connected to each other in a rotationally integrated manner via the connecting shaft 51, the structure of the device 28 is simplified and the assembling workability is improved and the cost is reduced. Can be achieved. Moreover, since the number of parts is reduced, weight reduction can be achieved and the failure rate is also reduced.

Moreover, since the rotation of the throttle grip 29 is directly transmitted to the rotary shaft 47 of the throttle opening detection means 30 without any rattling, the maximum voltage can be applied to the electric motor 19 and the performance of the electric motor 19 can be improved. You can make the most of it.

In addition, since there is no need for a throttle cable as in the prior art, there is no need to adjust the tension of the throttle cable, which is maintenance-free and the entire throttle opening detection device 28 has a handlebar 5. Since the components are integrated in the surroundings, it is not necessary to install the related parts of the throttle opening degree detection device inside the vehicle body of the electric motorcycle 1 as in the conventional case, and the layout of other parts is not overpowered.

Further, since the throttle grip 29 is provided outside the straight pipe portion 32 provided on the handlebar 5 in the vehicle width direction, and the throttle opening detecting means 30 is provided inside the straight pipe portion 32 in the vehicle width direction, In the unlikely event that the electric motorcycle 1 falls over, the throttle opening detection means 30 is not impacted, and there is little risk of damage.

Further, the throttle grip 29 and the throttle opening detecting means 30 are connected to each other via a connecting shaft 51 so as to rotate together, and the connecting shaft 51 is connected to the rotary shaft 4 of the throttle grip 29 and the throttle opening detecting means 30.
Since 7 is provided with connecting means 54 and 55 for integrally rotating and allowing a slight relative movement ΔL in the axial direction, the throttle grip 29, the throttle opening detecting means 30, and the connecting shaft 51 in the axial direction. Is absorbed by the relative movement ΔL of the connecting shaft 51 in the axial direction. Therefore, it is possible to increase the manufacturing tolerance of each of the above-mentioned components, and at the same time, to facilitate the assembly of the throttle opening degree detection device 28, which leads to cost reduction.

Since the return spring 46 that constantly biases the throttle grip 29 in the direction of decreasing the throttle opening is provided, the throttle is forcibly closed at the same time when the passenger releases the throttle grip 29, and the electric motor is closed. The power supply to 19 is stopped. Therefore, the electric motor 19 is stopped and a high degree of safety is ensured when the occupant is not in the electric motorcycle 1 or when the electric motorcycle 1 that is running falls over.

[0047]

As described above, the throttle opening detection device for an electric motorcycle according to the present invention is provided on a handlebar that steers the front wheels and is held by an occupant. In a throttle opening detection device for an electric motorcycle, which comprises a throttle opening detection means for electrically detecting a throttle opening as the rotation axis rotates with rotation, a center of the rotation axis of the throttle opening detection means is It is characterized in that the rotary shaft and the throttle grip are connected integrally with each other so that they are aligned with the extension line of the central axis of the throttle grip.

Therefore, the throttle grip and the throttle opening detecting means are connected to each other in a rotationally integrated manner, the structure of the apparatus is simplified, the assembling workability is improved, and the cost can be reduced. Moreover, since the number of parts is reduced, weight reduction can be achieved and the failure rate is also reduced.

Moreover, since the rotation of the throttle grip is directly transmitted to the throttle opening detecting means, the maximum voltage can be applied to the electric motor and the performance of the electric motor can be maximized.

In addition, since the throttle cable is not required as in the prior art, it is not necessary to adjust the tension of the throttle cable, which is maintenance-free and the entire throttle opening detection device is integrated around the handlebar. Therefore, it is not necessary to secure the related parts of the throttle opening detection device inside the vehicle body of the electric motorcycle as in the conventional case, and the layout of the other parts is not unreasonable.

Further, the throttle opening detecting device for an electric motorcycle according to the present invention has a straight pipe portion extending substantially in the vehicle width direction on the handle bar and a straight pipe portion connected to an intermediate portion of the straight pipe portion. A support portion for connecting the steering shaft to the steering shaft, the throttle grip is provided on the outside of the straight pipe portion in the vehicle width direction, and the throttle opening is provided on the inside of the straight pipe portion in the vehicle width direction. It is characterized in that a detecting means is provided.

Therefore, if the electric motorcycle should fall, the throttle opening detecting means will not be impacted and there is little risk of damage.

Further, the throttle opening detecting device for an electric motorcycle according to the present invention includes a connecting shaft extending along the central axis of the straight pipe portion and rotatable in the straight pipe portion.
It is characterized in that the connecting shaft is provided integrally with the throttle grip and the rotary shaft of the throttle opening detecting means so as to rotate integrally with each other and to allow some relative movement in the axial direction.

Therefore, the axial dimensional error of the throttle grip, the throttle opening detecting means, and the connecting shaft is absorbed by the relative movement of the connecting shaft in the axial direction.
Therefore, it is possible to increase the manufacturing tolerance of each of the above-mentioned components, and at the same time, it is possible to easily assemble the throttle opening degree detection device, which leads to cost reduction.

The throttle opening detecting device for an electric motorcycle according to the present invention is characterized in that a return spring for constantly urging the throttle grip in the direction of decreasing the throttle opening is provided. .

Therefore, at the same time when the occupant releases the throttle grip, the throttle is forcibly closed and power supply to the electric motor is stopped. Therefore, the safety is enhanced because the electric motor does not operate when the occupant is not in the electric motorcycle, or when the running electric motorcycle falls over.

[Brief description of drawings]

FIG. 1 is a right side view of an electric motorcycle to which the present invention is applied.

FIG. 2 is a wiring diagram of a battery, a controller, and an electric motor.

FIG. 3 is a cross-sectional view of a throttle opening detection device showing an embodiment of the present invention.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

5 is a cross-sectional view taken along the line VV of FIG.

FIG. 6 is a perspective view of a return spring.

FIG. 7 is a configuration diagram of a throttle opening detection device showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric motorcycle 4 Front wheel 5 Handlebar 11 Battery 12 Controller 19 Electric motor 28 Throttle opening detection device 29 Throttle grip 30 Throttle opening detection means 32 Straight pipe part 33 Steering shaft 34 Support part 34a Straight pipe part connection part 46 Return spring 47 Rotating shaft 51 Connecting shaft 52,53 Bearing 54,55 Connecting means

Claims (4)

[Claims] 1. A throttle grip provided on a handlebar for steering front wheels and gripped by an occupant, and a throttle opening detection for electrically detecting a throttle opening by rotating a rotary shaft as the throttle grip rotates. In the throttle opening detecting device for an electric motorcycle including means, the center of the rotation axis of the throttle opening detecting means is aligned with the extension line of the central axis of the throttle grip, and the rotation axis and the throttle grip are integrally rotated. A throttle opening detection device for an electric motorcycle, characterized by being connected. 2. The handlebar is provided with a straight pipe portion extending substantially in the vehicle width direction and a support portion coupled to an intermediate portion of the straight pipe portion for connecting the straight pipe portion to a steering shaft. 2. The throttle grip is provided on the outer side in the vehicle width direction of the straight pipe portion with the joint portion of the above being interposed, and the throttle opening detection means is provided on the inner side in the vehicle width direction of the straight pipe portion. This is a throttle opening detection device for electric motorcycles. 3. A connecting shaft which extends along the central axis of the straight pipe portion and is rotatable in the straight pipe portion, and the connecting shaft which is rotationally integrated with the throttle grip and the rotary shaft of the throttle opening detecting means. The throttle opening detecting device for an electric motorcycle according to claim 1, further comprising a connecting means for connecting so as to allow some relative movement in the axial direction. 4. The throttle opening detecting device for an electric motorcycle according to claim 1, further comprising a return spring for constantly urging the throttle grip in a direction to reduce the throttle opening.