JPS6121349Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a bicycle sidecar, and more specifically, the invention relates to a bicycle sidecar, and more specifically, a bicycle sidecar characterized in that a case equipped with wheels is detachably attached to the side of the rear wheel of the bicycle. It concerns sidecars.

The object of this invention is to provide a bicycle sidecar that can be easily attached to and detached from a bicycle, and which has good running and operability when attached.

Hereinafter, one embodiment of this invention will be described in detail using the drawings.

FIGS. 1 and 2 are a front view and a side view showing a normal bicycle 1 with a bicycle sidecar 3 attached thereto.

The bicycle 1 is constructed as follows. That is, in FIGS. 1 and 2, 5 is a vehicle body frame, 7 is a front wheel, and 9 is a rear wheel.
is rotatably supported by a front wheel support frame 11 connected to the front part of the vehicle body frame 5, and the rear wheel 9 is rotatably supported by a rear wheel support frame 13 connected to the rear part of the vehicle body frame 5. 15 is a handle, 17 is a saddle, and 19, 19 are petals, and by stepping on the petals 19, 19 downward alternately, the rear wheel 9 is rotated via the large diameter sprocket 21, the chain 23, and the rear wheel sprocket 25. , the bicycle 1 is configured to run.

Further, the bicycle sidecar 3 is configured as follows. That is, 27 is a case supported and fixed to the support member 29, 31 is a wheel rotatably supported at one end of the support member 29,
Reference numeral 33 denotes a fixture provided on the case 27. The fixture 33 is formed of a hollow cylindrical member, and has an elongated hole 35 perpendicular to the axial direction formed in the upper surface of the approximately central portion. This elongated hole 35 is formed wider only in the circumferential direction of the fixture 33 than a locking pin 49 which will be described later.
That is, the attachment 33 is locked to the locking pin 49 and movement in the axial direction is restricted, while the locking pin 49
It is possible to freely reciprocate in the circumferential direction via a long hole 35 that is locked in the hole 9 . Further, the mounting tool 33 is provided above the side of the case 27 on the opposite side of the wheel 31.

On the other hand, a support 37 for detachably mounting the bicycle sidecar 3 is attached to the cyclist 1 side. This support 37 is constructed as follows. That is, in Figure 3,
39 is a support pipe made of a hollow cylindrical member, and this support pipe 39 has a horizontal metal fitting 41 inside the front end.
In addition, a vertical metal fitting 43 is provided on the upper surface of the central part.
is installed protrudingly. A bolt through hole 45 is formed in the horizontal metal fitting 41, and a vertical elongated hole 47 is formed in the vertical metal fitting 43. 49 is a locking pin provided at an appropriate position behind the vertical metal fitting 43;
The pin hole 51 is provided in a pin hole 51 formed in the upper peripheral surface of the support pipe 39 so that the pin hole 51 can be retracted from the pin hole 51. In a normal state, the pin hole 51 is biased by a bullet 53 such as a coil spring and projects upward.

55 is the horizontal frame 5 of the rear wheel support frame 13
This support metal fitting 55 is provided with a bolt through hole 59 that matches the bolt through hole 45 of the horizontal metal fitting 41. Further, 61 is a threaded portion provided at the end of the rear wheel support shaft 63.

The support 37 is attached to the bicycle 1 in the following manner.
installed on. That is, the horizontal metal fitting 45 of the support 37 is fitted into the support metal fitting 55 on the bicycle 1 side, and the bolt 65 is inserted into the matching bolt through hole 59, 45.
At the same time, insert the threaded part 61 of the rear wheel support shaft 63 into the long hole 47 of the vertical metal fitting 43, and insert the nut 69 into the threaded part 61. It is installed and fixed by screwing and tightening.

In the above configuration, in order to attach the bicycle sidecar 3 to the bicycle 1, the locking pin 49 is pushed into the support pipe 39, and then the support pipe 39 is
Insert the fixture 33 into the. Then, when the long hole 35 of the fixture 33 is positioned above the locking pin 49,
The locking pin 49 is urged by the bullet 53 and protrudes upward through the elongated hole 35.
9 locks the fixture 33 in the front-rear direction. In this state, the fitting 33 is rotatably mounted on the support pipe 39 of the support 37 and is locked in the front-rear direction by a locking pin 49. Therefore, the bicycle sidecar 3 is swingably attached to the bicycle 1 via the attachment 33 and the support 37.

As explained above, this invention includes a support pipe 39 equipped with a horizontal metal fitting 41 and a vertical metal fitting 43 that can be attached to the horizontal frame 57 and rear wheel support shaft 63 of the bicycle 1, respectively, and a biasing force inside the support pipe 39. A locking pin 49 that is provided in the support pipe 39 and can be freely retracted from a pin hole 51 formed on the circumferential surface of the support pipe 39, and a long hole 3 that is locked to the locking pin 49 and can reciprocate only in the circumferential direction.
5 and a pipe-shaped fixture 33 that is detachably attached to the outer periphery of the support pipe 39, and a case 27 to which the fixture 33 is attached and equipped with wheels 31 on the opposite side of the fixture 33. It is easy to attach and detach from a bicycle, and can be immediately attached to a conventional vehicle.Since it is attached to the side of the rear wheel, it does not interfere with pedal operation, and it can be attached freely. At the same time, the case is located lower and the center of gravity of the load is lowered, making the bicycle ride more stable and easier to operate. It is also useful as a stand when the bicycle is stopped.

Note that this invention is not limited to the above-mentioned embodiments; for example, a support may be attached to an appropriate position on the frame, and this invention can be implemented in modes other than the above-mentioned embodiments. It is something.

Furthermore, although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the reference numerals do not limit the technical scope of this invention.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, and FIGS. 1 and 2 are front and side views showing a bicycle sidecar attached to a bicycle, and FIG. 3 is a view of the main parts. It is an exploded perspective explanatory view. Explanation of the symbols representing the main parts of the drawing, 1...
Bicycle, 27... Case, 29... Support part, 33
... Mounting tool, 35 ... Long hole, 37 ... Support tool, 3
9...Support pipe, 41...Horizontal fitting, 43...
Vertical metal fitting, 49... Locking pin, 51... Pin hole, 53... Bullet machine, 57... Horizontal frame, 63
...Rear wheel support shaft.

Claims (1)

[Scope of utility model registration request] Horizontal frame 57 and rear wheel support shaft 63 of bicycle 1
A support pipe 39 equipped with a horizontal metal fitting 41 and a vertical metal fitting 43 that can be attached to the support pipe 3, respectively.
A locking pin 4 is biased inside the support pipe 39 and is retractable from a pin hole 51 formed on the circumferential surface of the support pipe 39.
9, and a long hole 35 that is locked to the locking pin 49 and can reciprocate only in the circumferential direction is formed, and the support pipe 39
This sidecar for a bicycle is characterized in that it is composed of a pipe-shaped fitting 33 which is detachable on the outer periphery of the case 27, and a case 27 to which the fitting 33 is attached and which is provided with a wheel 31 on the opposite side of the fitting 33.