JP2506552Y2 - Belt case attachment device for bicycle - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting device for mounting a rear portion of a bicycle belt case on a bicycle body.

[0002]

2. Description of the Related Art Conventionally used bicycle belts are usually covered with a belt case, but a full-face case that covers the upper and lower running zones of the belt is used. A half-case type belt case (so-called pistol type belt case) that is used or covers only the upper running zone of the belt, the rear end of which does not reach the free wheel of the rear wheel.
May be adopted.

In the latter case, it is convenient if even a small gear of the free wheel can be covered. For this purpose, a mounting metal fitting for a full-scale case is prepared, or an actual opening 53- As disclosed in Japanese Patent No. 88956, there is a method of providing a separate auxiliary case at the rear portion.

[0004]

FIG. 6 is a side view of a bicycle having a conventional half-case type case attached thereto, and FIG. 7 is a perspective view of the main part thereof. In the figure, 1 is a vertical pipe, 2 is a chain, 3 is a back hawk, and a chain is a chain.
Is welded to the protruding portion 5 formed integrally with the rear nail 4,
The back hawks 3 are fixed to the protrusions 6 by screws 7 respectively.

As shown here, the half-case type belt case 8 for covering only the upper traveling zone of the belt is mounted as follows.
A method has been adopted in which the rear end is abutted against the back fork 3 and fixed with the band 9 and the screw 10. For this reason, the case 8 itself cannot be extended to the rear of the case 8 and therefore, in order to cover a part of the small gear 12 of the free wheel 11, as described above, the entire case is formed. The mounting bracket for the case or the sub-case is to be separately mounted. In these cases, since parts separate from the case are attached, the number of parts is increased, the structure is complicated, the manufacturing cost is high, and the assembling work is not easy. It was

As another problem, when the endless belt is reattached, the screw 10 is loosened, the band 9 is unfastened, the belt case 8 is removed from the right backhoe 3, and then the backhoe fixing screw 7 is provided. Is loosened, the rear part of the right back hawk 3 is removed from the projection 6 of the rear claw 4, and a belt (not shown) is inserted through the gap, which is very troublesome. As another method, in the case of loosening only the screw 7 from the nut (not shown) to remove the back hoe 3 from the protrusion 6 and inserting it from the gap, the right back hoe 3 and The belt case 8 fixed integrally may be bent. 13 is a rear wheel hub axle.

The present invention improves the above-mentioned drawbacks of the prior art, and in a bicycle adopting a half-case type belt case, even a small gear of a free wheel is integrally covered.
However, it is an object of the present invention to provide a bicycle belt case mounting device that requires less man-hours when the belts are replaced.

[0008]

The present invention employs the following structure to achieve the above object. That is,
The gist of the present invention is that when a projection portion extending above the rear claw portion and the rear portion of the right side backhook are screwed together, an elevation surface portion sandwiched between the both portions and an inward flat surface formed above this A belt case attachment for a bicycle, characterized in that the belt case attachment metal fitting consisting of the above parts is fastened together with a screw so that the flat portion of the attachment metal is screwed to the upper bottom part of the belt case. Preferably, the device is a belt case mounting member in which channel-shaped flanges are formed on both sides of an upright portion, which is dropped from above the projecting portion to be fitted, and which is fastened together with a screw. It is a mounting device.

And, in particular, the belt case used is a half-case type belt case, and the rear portion thereof is extended to cover a part of the small gear of the free wheel. ,
According to another aspect of the invention, there is provided a bicycle belt case mounting device for a bicycle, wherein a flat surface portion of the mounting bracket is screwed to an upper bottom portion of the belt case.

[0010]

According to the present invention, the semi-case type belt case is mounted on a mounting metal fitting which is completely independent of the back horn without being mounted on the back hawk. To the rear without staying in the backhoe, and covering a part of the freewheel small gear.
The number of parts is reduced, the structure is simple, and the mounting work is easy. Further, even when the belt is replaced, many screws are loosened by the conventional mounting method, but this invention also simplifies the work.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 are a side view, a front view and a top view of a belt case fitting 20 which is a main part of the present invention. In the figure, reference numeral 21 is an elevation portion, which is sandwiched between the protrusion 6 and the rear portion of the back hawk 3. Reference numeral 22 denotes a flat surface portion formed inwardly on the upper portion of the upright surface portion 21, and in this example, the flat surface portion 22 is formed via an L-shaped angle 23. Also, the elevation 2
Channel-shaped flanges 24 and 25 are formed on both sides of the channel 1. The upright portion 21 has a shape similar to that of the projection 6 described later, and the flanges 24 and 25 are opened and expanded so that the projection 6 can be held from both sides and can be dropped from above. Be prepared in a state.

All of these are formed by bending. A free hole 26 is formed in the upright portion 21, while a screw hole 27 is formed in the flat portion 22.

FIG. 4 is a partially cutaway perspective view in which the belt case 20 is attached, and FIG. 5 is an exploded perspective view thereof. The projection 6 formed on the rear claw 4 is formed in a mountain shape that is slightly inclined upward, and a play hole 28 is formed at this end, and the play hole 26 of the belt case fitting 20 is used.
With the same play hole 29 formed in the rear part of the back hoe 3, the three members are fastened together with the screw 30 and the nut 31.

At this time, the flanges 24 provided on both sides of the upright portion 21 of the belt case mounting member 20 with respect to the protruding portion 6,
The positional relationship with the protrusion 6 is specified by 25.

The belt case 40 is a case having a U-shaped cross section and having an upper bottom 41. The rear side of the case is extended so that the upper side of a small gear (not shown) can be covered. The curved portion 42 is formed. The upper bottom 41 of this case 40
An elongated hole 43 is bored in the longitudinal direction. Then, the flat surface portion 22 of the belt case mounting bracket 20 is fitted into the upper bottom 41 to form the flat surface portion 22.
The screw hole 27 and the elongated hole 43 of the upper bottom portion 41 are matched with each other and the screw 44 is fixed. In this case, one side of the belt case 40 is fitted into the L-shaped bent portion of the belt case mounting bracket 20.

[0016]

The effect of the present invention is that the belt case is attached independently of the backhoe.
The belt case can be extended to the rear, so that the belt case is sufficient to cover the small gear.In addition, this mounting bracket can be easily and reliably fixed to the protrusion. It has become. On the other hand, even when the belt is replaced, it is sufficient to loosen a part of the screws, and the workability is easy.

[Brief description of drawings]

FIG. 1 is a side view of a belt case mounting bracket of the present invention.

FIG. 2 is a front view of the belt case mounting bracket in FIG.

FIG. 3 is a front view of the belt case mounting bracket in FIG.

FIG. 4 is a partially cutaway perspective view showing a state where the belt case of FIG. 1 is attached.

FIG. 5 is an exploded perspective view of FIG. 4;

FIG. 6 is a side view of a bicycle having a conventional half-case type belt case attached thereto.

FIG. 7 is a perspective view of a main part of FIG.

[Explanation of symbols]

 20 ... Belt case mounting bracket, 21 ... Mounting bracket elevation, 22 ... Flat surface of mounting bracket, 23 ... L-angle of mounting bracket, 24, 25 ... Elevating flange, 26 , 28, 29 ... play hole, 27 ... screw hole, 30, 44 ... screw, 31 ... nut, 40 ... belt case, 41 ... upper part of belt case, 42 ... belt case Curved part, 43 ... Long hole in the upper bottom.

Claims (3)

(57) [Scope of utility model registration request] 1. When a protrusion extending above the rear claw and a rear portion of the right side backhoe are screwed together, an upright portion sandwiched between them and an inward flat portion formed thereabove. A belt case mounting device for a bicycle, characterized in that the belt case mounting bracket consisting of and is fastened together with a screw so that the flat portion of the mounting bracket is screwed to the upper bottom of the belt case. . 2. A belt case mounting member having channel-shaped flanges formed on both sides of an upright portion, the fitting being performed by dropping the fitting from the upper side of the protrusion and fastening them together with a screw. The belt case attachment device for a bicycle according to item 1. 3. The belt case is a half-case type belt case, the rear portion of which is extended and a small gear of a free wheel is formed.
2. The bicycle belt case mounting device according to claim 1, wherein a part of the cover is covered.