JPH0312626Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a bicycle that can be used, for example, as a training machine.

(Prior Art) Conventionally, various training machines have been used for the purpose of improving leg strength, etc., but these training machines are all fixed types that are installed indoors, whereas bicycles that are run outdoors are There is no example of an improved training machine.

(Problem that the invention aims to solve) However, depending on the type of training, training machines installed indoors are insufficient, and so-called tire-pulling training, in which a bicycle is run by tying a tire to the rear wheel of the bicycle, is used. It was being done.

(Means for solving the problem) In view of the above-mentioned circumstances, this invention proposes a new bicycle that can be used as a training machine. A plate is attached, a fixed part is located on one side of the disc plate, and a movable part provided at the tip of the pressure shaft is located on the other side of the disc plate corresponding to the fixed part, and An operating cam for the pressurizing shaft is provided at the rear of the pressurizing shaft, a spring is interposed between the operating cam and the tip of the pressurizing shaft, and an operating portion of the operating cam is provided at an appropriate location on the vehicle body. The reason is that it is equipped with a load braking device.

(Function) That is, in this invention, the moving part provided at the tip of the pressure shaft is located on the other side of the disk plate, and furthermore, the operating cam of the pressure shaft is provided at the rear of the pressure shaft. Since a spring is interposed between the operating cam and the tip of the pressurizing shaft, the spring is first compressed by the movement of the actuating cam, and the movement provided at the tip of the pressurizing shaft is caused according to the amount of deformation. Pat presses the disk board. Therefore, with this invention, it is possible to accurately control the pressing force on the disc plate, and since the spring deforms and absorbs the wear of the parts, in practice it is possible to apply almost constant pressure to the disc plate. Can apply pressure.

(Example) Hereinafter, this invention will be explained based on the illustrated example. Reference numeral 1 is a bicycle according to the invention, and the front and rear wheels of the bicycle 1 are provided with ordinary caliper brakes 2.

Further, a disc plate 3 is attached to the rear axle of the bicycle 1, and a fixing part 5 provided at the tip of the mounting arm 4 is positioned on one side of the disc plate 3. is fixed to a bracket 6 on the vehicle body.

On the other hand, a pressure shaft 8 housed in a case 7 is provided on the other side of the disk plate 3, and the other side of the disk plate 3 corresponding to the fixing pad 5 is provided on the front surface of the tip end 8a of the pressure shaft 8. Further, an operating cam 10 is provided at the rear of the pressure shaft 8, and a coil spring 11 is provided between the operating cam 10 and the tip 8a of the pressure shaft 8.

In this embodiment, the actuating cam 10 includes a cam plate 12 having a plurality of wave-shaped grooves 12a on the periphery of its front surface;
an annular portion 13a that engages with the outer peripheral end surface of the cam plate 12;
The rotating arm 13 of the cam plate 12 has a rotating arm 13, a plurality of balls 14, and a plate 15 having receiving holes 15a for the balls 14 at appropriate intervals on its circumferential surface.

This operating cam 10 is connected to the pressurizing shaft 8
A coil spring 11 is attached to the plate 1.
5 is slidably inserted into the receiving hole 15a and the groove 12.
The cam plate 12 is rotatably inserted through the cam plate 12 so that the ball 14 is interposed between the holes 1 and 2.
6 properly screw in. Incidentally, the case 7 of the pressure shaft 8 is fixed to the above-mentioned bracket 6 via the attachment part 7a, and one end of the actuation wire 17 is tied to the attachment hole 13a of the rotating arm 13. wire 1
The other end of 7 is connected to an operating section 18 of the operating cam, which has a multi-stage switching mechanism provided on the upper pipe of the vehicle body. The bicycle according to this invention is constructed as described above, and when used as a training machine, when the operating lever of the operating section 18 is tilted to an appropriate position, the operating wire 17 connected to the operating section 18 is pulled. , rotating arm 13 and cam plate 12
is rotated and stopped at an appropriate position.

When the cam plate 12 is rotated as described above and stopped at an appropriate position, the wave-shaped groove 12 formed on the cam plate surface
The ball 14 in contact with a receives a pressing force corresponding to the stop position of the wave-shaped groove 12a, and this pressing force is transmitted to the coil spring 11 via the plate 15, and further becomes a compressive force of the coil spring 11 to move the moving part. 9 will be informed. As a result, the disc plate 3 is pressed between the fixed part 5 and the movable part 9, an appropriate load is applied to the rear wheel, and by stepping on the pedal, it is possible to train leg strength and the like.

According to this invention, the coil spring 1
Since the disk plate 3 is pressed with a compression force of 1, the disk plate 3 can be accurately pressed in proportion to the degree of compression of the coil spring 11.

Also, even if the movable part 9 and the fixed part 5 wear out to some extent, the wear will be avoided by the coil spring 11.
It is absorbed by the deformation of , making it possible to maintain a nearly constant pressing force. In addition, when adjusting the load applied to the rear wheels, the operating section 18 may be appropriately switched.

Further, the calibar brakes 2 provided on the front and rear wheels are used as the original brakes of the bicycle 1.

(Effects of the invention) In summary, according to this invention, since the disc plate is pressed through the spring, a constant load can be continuously maintained, resulting in a bicycle that is most suitable as a training machine.

[Brief explanation of the drawing]

Figure 1 is a side view of the bicycle according to this invention.
FIG. 2 is an enlarged view of a rear wheel loading device which is a main part of the bicycle, FIG. 3 is a longitudinal sectional view of the same, and FIG. 4 is an exploded perspective view of a pressure shaft portion of the loading device. In the diagram, 1 is a bicycle, 2 is a caliper brake, and 3 is a bicycle.
1 is a disk plate, 5 is a fixed part, 8 is a pressure shaft, 9 is a movable part, 10 is an operating cam, 11 is a coil spring, and 18 is an operating section.

Claims (1)

[Scope of utility model registration request] In addition to the normal brake, a disc plate is attached to the rear wheel, and a fixed part is located on one side of the disc plate, while a pressure shaft is placed on the other side of the disc plate corresponding to the fixed part. A moving part provided at the tip is positioned, and a cam plate having a plurality of wave-shaped grooves on the front periphery of the pressure shaft and an annular part that engages with the outer peripheral end surface of the cam plate are provided at the rear of the pressure shaft. an actuating cam for the pressurizing shaft comprising a rotating arm of the cam plate, a plurality of balls, and a plate having receiving holes for the balls at appropriate intervals on the circumferential surface thereof; A spring is interposed between the and the tip of the pressure shaft, and one end of the actuating wire is connected to the rotating arm, and the other end of the actuating wire is connected to the actuating cam provided at an appropriate location on the vehicle body. A bicycle characterized in that it is coupled to an operating section.