JPS59304Y2 - Bicycle carrier for bicycles - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a carrying device suitable for carrying a folded bicycle when riding.

In recent years, with the diversification of recreational activities, the practice of folding a bicycle, transporting it to a destination by train, ship, etc., and then reassembling it at the destination and cycling, which is called cycling, has become popular.

During these cycling trips, it was common to store the folded bicycle in a cloth bag and carry it by hand.

However, although bicycles are lighter, carrying them over long distances requires considerable effort and is often inconvenient.

For this reason, a wheel for transporting a portable bicycle has been proposed, as in Japanese Utility Model Publication No. 52-23776, in which a wheel shaft is attached to the back fork end, and a wheel is provided at the outer end of the shaft that protrudes through the bicycle carrying bag. However, with this configuration, the wheel axle tends to come off the backhawk end, and the wheels also tend to come off the axle, so there is a risk of them being lost.

On the other hand, since no appropriate measures have been taken to prevent the chain from swinging when removed from the hub gear, there is a risk that the painted surface of the frame may be damaged by the chain.

This invention was made in view of the above-mentioned conventional circumstances,
In addition to being easy to attach and detach from the rear wheel shaft support of the frame, the hub is attached to a shaft that allows the chain to be stretched while maintaining the spacing between the chainstays, and supports the shaft support.
It is an object of the present invention to provide a transportation tool consisting of a small truck with small wheels that can be easily attached to and detached from the shaft.

The embodiment shown in the drawings will be explained below. As shown in the exploded perspective view in Fig. 1, the shaft 1 has approximately the same width as the hub of the rear wheel.
(19) has a clamping part consisting of a nut 2 with a grip ring and a nut 19 at one end, and a clamping part consisting of a fastener 3 and a nut 20 at the other end, and a hole inside the clamping part at one end. The sprocket 4 supported by .19' is provided with a connecting rod 5 in a T-shape downward from the center.

The small trolley 6 that supports the shaft 1 has elastic hard rubber backhawk end support parts 8, 8 on the upper surface of both ends of a rectangular base plate 7, and small wheels on the lower surface at appropriate intervals. 9, 9 are provided opposite each other, and a through hole 10 through which the connecting rod 5 is inserted is bored in the center of the board.

Reference numeral 11 indicates a thumbscrew that is screwed into the threaded portion 5a of the connecting rod that protrudes below the board from the through hole 10.

The details of the shaft 1 are as shown in FIG. 2, which shows the cross section taken along the line A-A in FIG. The nut 2 that protrudes further and has a grip ring has a tapered coil spring 14.
to press the outer shaft end through the coil spring 15, and the tightening tool 3 also presses the other outer ring end through the coil spring 15.
3 is screwed or locked.

The fastener 3 includes a cap 16 having a recess into which the enlarged portion 13a of the center shaft is slidably fitted, and a cap 16 that is slidably inserted through the cap and the enlarged portion 13a of the center shaft in a direction perpendicular to the axis. The bundle 17 has a cam portion 17a.

On the other hand, the sprocket 4 has washers 18 on both sides.
18' is supported by nuts 19 and 19', and the other end is supported by nuts 2 and 19' with a distance between them and the fastener 3.
A pair of nuts 20 and 20' are screwed onto the outer shaft 12 with the washer 21 in between, with the spacing approximately equal to the distance between the two nuts 20 and 20'.

B in Fig. 1 is attached to the hard rubber backhawk end support 8.
As shown in FIG. 3, which shows the cross section taken along the line -B, there is a recessed hole 22 that should receive the back fork end, that is, a protrusion at the rear lower end of the bicycle frame, and a small recessed hole 22a that is indented further downward.
The front and rear end surfaces thereof are held by the rising portions 7a, 7a of the base plate 7, and are fixed to the base plate together with the top plate 9a of the small wheel 9 with screws 23 and 23.

The heads of the screws 23 and 23 are embedded in the hard rubber backhawk end support.

The method of using the bicycle carrier of the present invention is as follows.

First, remove the front and rear wheels of the bicycle as usual, then remove the fourth wheel.
As shown in Figure A, insert the shaft 1 into the rear end of the chainstay S, that is, into the recess K of the backhawk end.

K, and hold each backhawk end with the holding parts at both ends of the shaft.

At this time, when installing the bub, use nuts 19.19' and nuts 20.20' to maintain the spacing between the back hawks.
Adjust.

Next, when the bundle 17 of the fastener 3 is turned half a turn, the center shaft 13
is slightly drawn toward the fastener by the action of the cam portion 17a, and the shaft 1 is firmly attached.

After operating the chain derailleur D and hooking the chain C onto the sprocket 4 which serves as a bub gear of the bicycle, the connecting rod 5 is inserted into the hole 0 of the base plate of the trolley 60.

Next, fit the lower ends T, T of the backhawk end into the recessed holes 22, 22 of the backhawk end support parts 8, 8, respectively,
Insert the thumbscrew 11 into the threaded part 5a and connect the trolley 6 as shown in Figure 4.
The connecting rod 5 of the shaft 1 is firmly screwed onto the shaft 1.

The subsequent operations are as usual. That is, the frame and front and rear wheels are wrapped in a cloth bag (not shown), tied with string, and hung with a band.

However, the opening of the bag is oriented downwards, contrary to the usual way, to expose the small wheels 9, 9 of the cart so that it can be easily moved when carried.

In FIGS. 4 and 5, arrow X indicates the direction of the saddle, and arrow Y indicates the direction of the pedals.

In Fig. 4 A 50, a type of bicycle generally called a road bicycle is shown as an example, but since a small recessed hole 22 a is provided below the recessed hole 22, the piston shown in Fig. 5 A, Of course, it can be used even if it is a randonneur with a drawing opening.

The symbols /, K// are the recesses in the backhawk end, and F is the chain trailer attachment part.

In either case, the chain derailleur does not interfere with the mounting of the carrying device of the present invention, and does not pose any problem when the carrying device is carried while lightly holding the upper part of the carrying device after mounting and rolling the small wheels on the ground.

Furthermore, by adjusting the positions of the nuts 2, 19, and 20, the shaft 1 can be applied to various types of bicycles.

The present invention is not limited to the above-mentioned example in any way; for example, the head of the screw 23 that fixes the backhawk end support 8 made of hard rubber does not necessarily need to be embedded in the rubber; It is also possible to provide a recess for receiving a screw head and to bond the support 8 to the substrate 7.

Furthermore, it is of course possible to use a thumbscrew or the like in place of the fastener 3 or nut 2, or to mold the backhawk end support 8 from elastic plastic.

Further, the means for engaging and disengaging the lower end of the connecting rod 5 is no thumbscrew 11.
However, any conventional means such as a pin can be used.

As detailed above, in the bicycle carrier according to the present invention, the axle is securely held at the back fork end, and the small wheels are also attached to the trolley, so that it is securely fixed and
The chain can be kept in tension without damaging the frame, etc. Also, the distance between the clamping parts can be adjusted according to the distance between the backhawk ends, so no undue force is applied to the backbone, etc. This provides extremely excellent practical effects.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, with Figure 1 being an exploded perspective view and Figure 2 being an exploded perspective view.
Figures 1 to 3 are cross-sectional views taken along line A-A and line B-B in Figure 1, Figure 4 A 90 is a partially cutaway front view showing how to use it, and Figure 5 I 50 is a cross-sectional view of the bicycle carrier of the present invention. FIG. 3 is a front view showing the main parts of another type of bicycle to which the present invention can be applied. 1...shaft, 2...nut, 3...
...Tightening tool, 4...Sprocket, 5...
...Connection rod, 6...Dolly, 7...Platform board, 8...Backhawk end support, 9...
...Small wheel, 10...Through hole, 11...
・Thumb screw, 20... Nut, 22...
concave hole.

Claims (1)

[Scope of utility model registration request] It has a clamping part on both ends that locks the bicycle's backhawk end, and has a sprocket on the inside of one clamping part that locks the bicycle chain, and has a connecting rod in a T-shape below the center part. A backhawk end support made of an elastic material having a protruding shaft and a recessed hole facing upward into which the backhawk end held by the clamping part is inserted is fixed on the board at a position corresponding to both the clamping parts. A through hole through which the connecting rod is inserted is formed in the center of the board, and a trolley having small wheels provided on the lower surface and a lower end of the connecting rod protruding downward from the through hole are inserted into the board. 1. A bicycle carrier for wheeled riding, characterized by comprising a member for engaging and disengaging on the lower surface.