JPH08156869A - Speed detector for motorcycle - Google Patents

Abstract

PURPOSE: To provide a speed detector for a motorcycle in which a speed sensor is prevented from being brought into contact with an ankle or a vicinity of the ankle of a rider for improving conafortableness of riding. CONSTITUTION: In a gasket 14 arranged in a vehicle speed detector 1 for a motorcycle, one end part 14b in the gasket 14, via which the speed sensor 12 is mounted in a vehicle body, is fixed in the vehicle body, while the other end part 14a in the gasket 14 is arranged further away from an ankle 6a of a rider than one end part 14b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle speed detecting device for a motorcycle.

[0002]

2. Description of the Related Art Conventionally, in a speedometer of a motorcycle, the rotation of a front wheel is taken out by a worm gear, and this is transmitted to a cable to rotate a magnet in the speedometer, which occurs on an aluminum drum arranged around the magnet. The method of displaying the torque generated from the eddy current on a meter was common. In recent years, in addition to such a method, a method of obtaining the vehicle speed from the rotation of the drive shaft of the transmission has been proposed as disclosed in, for example, Japanese Patent Laid-Open No. 64-29771. It was

FIG. 7 and FIG. 8 show an example of a vehicle speed detecting device a in which a system for obtaining the vehicle speed from the rotation of a drive shaft of such a transmission is adopted.
In this vehicle speed detecting device a, the operating portion c for operating the meter cable b connected to the speedometer (not shown) is located further outside than the drive sprocket e provided at the tip of the drive shaft d. Depending on the mounting position of the footrest (not shown), the operating part c may come into contact with the ankle or around the ankle depending on the rider.

For this reason, some riders may find this uncomfortable, and even if any rider gets on the rider's ankle or around the ankle will not come into contact with the speed sensor to make riding more comfortable. It was desired to provide the technology that can be done.

[0005]

The vehicle speed detecting device for a motorcycle according to the present invention has been invented in view of the above-mentioned problems of the prior art. The problem to be solved is to prevent the rider from wearing his ankle or around his ankle. It is an object of the present invention to provide a novel vehicle speed detection device for a motorcycle, in which the speed sensor is less likely to come into contact with the rider to make riding more comfortable.

[0006]

A vehicle speed detecting device for a motorcycle according to the present invention solves the above problems and is as follows. That is, the vehicle speed detection device for a motorcycle according to the present invention detects a vehicle speed in cooperation with a sensor rotor fixed to the tip of a drive shaft located near the ankle of a rider placed on a footrest and rotating together with the drive shaft. And a cover body that is interposed between the speed sensor and the sensor rotor and that covers the drive shaft tip portion including the sensor rotor and that has the speed sensor attached via a gasket. Become. Then, at one end of the gasket, a sensor part that is a part of the speed sensor and another part of the speed sensor, and a connecting part for connecting the sensor part and the speedometer via a cable, The gasket is arranged so as to be located inside and outside the cover body, and the other end of the gasket is fixedly attached to the cover body, and one end of the gasket is farther from the rider's ankle than the other end. The gasket was arranged as follows.

[0007]

Therefore, according to the vehicle speed detecting device of the present invention, since the gasket is arranged so that one end of the gasket is farther from the rider's ankle than the other end, the cover member is provided at one end of the gasket. The connecting portion, which is arranged so as to be located outside the vehicle, is less likely to contact the rider's ankle.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle speed detecting device 1 for a motorcycle according to the present invention will be described below in detail with reference to the drawings in accordance with the illustrated embodiments. FIG. 1 is a side view of an on-road motorcycle 2 such as a racer replica in which a vehicle speed detection device 1 for a motorcycle according to the present invention is adopted, and FIG. 2 is a view showing a state cut along a center line of a drive shaft. 3 is a view seen from the direction of arrow III in FIG. 2, FIG. 4 is a front view of the sensor rotor 10, and FIG. 5 is a side view showing a case where the vehicle speed detection device 1 is applied to an off-road motorcycle 2 ′ such as a motocrosser. 6 is a view corresponding to FIG. 3 according to FIG.

In this embodiment, the vehicle speed detecting device 1
Shows the one applied to the on-road motorcycle 2 such as a racer replica. As shown in FIGS. 1 to 3, the vehicle speed detection device 1 is a sensor rotor that is fixed to a drive shaft tip 8a located near the ankle 6a of the rider 6 mounted on the footrest 4 with a bolt 9a and rotates together with the drive shaft 8. 10 and a speed sensor 12 that cooperates with the sensor rotor 10 to detect the vehicle speed.
And this speed sensor 12 and sensor rotor 10
A drive shaft tip portion 8a ′ (drive shaft tip 8a
The left end portion of the drive shaft 8 including. ), The speed sensor 12 has at least a cover body 15 attached via a gasket 14 having a so-called tangential cam shape (a cam having a shape in which a small circle and a large circle are connected by a tangent line).

Further, the peripheral wall 10a of the sensor rotor 10
Includes a flat cylindrical wall 15 provided on the inner surface of the cover body 15.
The dust seal 15b arranged on the inner peripheral surface of a contacts. Reference numerals 16 and 16a denote a drive sprocket and a drive sprocket center (which is also the center of the drive shaft 8) provided on the drive shaft tip portion 8a ', respectively.

The gasket 14 is provided with a sensor portion 12a, which is a part of the speed sensor 12, on the back surface of the one end portion 14a (the inside of the vehicle is the back surface and the outside of the vehicle is the front surface). A connecting portion 12b which is another part of the connecting portion 12 and which connects the sensor portion 12a and the speedometer 17 (see FIG. 1) via the cable 18 is provided (see FIG. 2). The sensor portion 12a and the connecting portion 12b are positioned inside the cover body 15i and outside (side of the vehicle) 15o when the gasket 14 is attached to the vehicle body.

Further, the gasket 14 has the other end 14
b is fixed to the boss 15a of the cover body 15 with a bolt 9b. The gasket 14 is arranged so that one end portion 14a of the gasket 14 is farther from the ankle 6a of the rider 6 than the other end portion 14b.

Specifically, as shown in FIG. 3, a leg line 6c connecting the ankle 6a of the rider 6 and the knee head 6b (see FIG. 1) in a plane viewed from the side of the vehicle, and a vertical direction from the center of the drive sprocket 16a. The one end portion 14a of the gasket 14 is arranged at the other end portion 14b so that the one end portion 14a of the gasket 14 is not included in the inverted V-shaped region 22 (shown by hatching in FIG. 3) formed by intersecting the line 20 extending in the direction. On the other hand, the vehicle is inclined so that it is located diagonally above and in front of the vehicle.

In the vehicle speed detecting device 1 thus constructed, however, the leg 6c connecting the ankle 6a of the rider 6 and the knee head 6b in the plane viewed from the side of the vehicle.
And one end 14a of the gasket 14 is not included in the inverted V-shaped region 22 formed by intersecting the line 20 extending in the vertical direction from the drive sprocket center 16a with respect to the other end 14b. Since it is arranged in an inclined state so as to be located diagonally above and in front of the vehicle, the connecting portion 1 arranged so as to be located outside (side of the vehicle) from the cover body 15 at the one end portion 14a of the gasket 14.
2b moves away from the ankle 6a of the rider 6 and the surrounding area.

Therefore, since the ankle 6a of the rider 6 and the connecting portion 12b of the speed sensor 12 that protrudes to the outside around the ankle are less likely to contact the ankle 6a of the rider 6 and the surrounding portion, riding is more comfortable. it can.

The vehicle speed detecting device 1 can also be applied to an off-road motorcycle 2'such as a motocrosser. In this case, for structural reasons, the ankle 6a of the rider 6 is located in front of the drive shaft 8 when the rider 6 gets on the vehicle, as shown in FIGS. 5 and 6.

More specifically, as shown in FIG. 6, one end portion 14a of the gasket 14 is not included in the V-shaped region 22 'formed by intersecting the rider's leg line 6c with the line 20 described above. 14 has its one end 14a at the other end 1
It is arranged in an inclined state so as to be positioned diagonally above and behind the vehicle with respect to 4b. Therefore, also in this case, since the one end portion 14a of the gasket 14 is arranged so as to be inclined obliquely upward and rearward of the vehicle, the one end portion 14a of the gasket 14 is farther from the rider's ankle than the other end portion 14b. As a result, the ankle 6a of the rider 6 and the surrounding parts thereof are less likely to come into contact with each other, so that riding can be made comfortable.

[0018]

According to the vehicle speed detecting device for a motorcycle of the present invention, it is possible to make riding more comfortable by preventing the speed sensor from contacting the ankle or around the ankle of the rider.

[Brief description of drawings]

FIG. 1 is a side view of an on-road motorcycle such as a racer replica in which a vehicle speed detection device for a motorcycle according to the present invention is adopted.

FIG. 2 is a view showing a state in which the drive shaft is cut along the center line.

FIG. 3 is a view as seen from the direction of arrow III in FIG.

FIG. 4 is a front view of a sensor rotor.

FIG. 5 is a side view showing a case where the vehicle speed detection device is applied to an off-road motorcycle such as a motocrosser.

FIG. 6 is a view corresponding to FIG. 3 according to FIG.

FIG. 7 is a view for explaining the related art, and is a view seen from the left side of the vehicle.

FIG. 8 is a view taken along line VIII-VIII in FIG.

[Explanation of symbols]

 1 Motorcycle speed detector 3 Footrest 6 Rider 6a Rider's ankle 8 Drive shaft 8a Drive shaft tip 8a 'Drive shaft tip 10 Sensor rotor 12 Speed sensor 12a Sensor part (speed sensor) 12b Connection part (speed sensor) 14 Gasket 14a One end (of gasket) 14b The other end (of gasket) 15 Cover body 15i Inside (of cover body) 15o Outside (of cover body)

Claims (1)

[Claims] 1. A sensor rotor fixed to the tip of a drive shaft located near the ankle of a rider placed on a footrest, and rotating together with the drive shaft.
A speed sensor that cooperates with the sensor rotor to detect the vehicle speed, the speed sensor that is interposed between the speed sensor and the sensor rotor and covers the drive shaft including the sensor rotor, and the speed sensor covers the gasket. At least one cover part attached via the sensor part, which is a part of the speed sensor and another part of the speed sensor, and the sensor part and the speedometer at one end of the gasket. Connecting portions for connecting via a cable are respectively arranged inside and outside the cover body, and the other end portion of the gasket is fixedly attached to the cover body, and one end portion of the gasket is arranged. Should be positioned further away from the rider's ankle than the other end. Vehicle speed detecting device for a motorcycle comprising placing the packet.