KR200292557Y1 - Fold and unfold three-wheel bicycle - Google Patents

Abstract

The present invention relates to a folding three-wheeled bicycle, a saddle frame having both side plates in a "c" shape, a rear frame for fixing the rear wheels and assembled to the saddle frame, and a front wheel for fixing the front wheels and assembled to the saddle frame In the three-wheeled bicycle composed of a frame, the rear frame is fastened and fastened to the first fixing bolt of the side plate, the front frame is fastened to the second fastening bolt of the side plate is folded to reduce the volume And a folding three-wheeled bicycle that is easy to store.

Description

Folding three-wheeled bicycle {FOLD AND UNFOLD THREE-WHEEL BICYCLE}

The present invention relates to a three-wheeled bicycle, and more particularly to a folding three-wheeled bicycle that is easy to carry and store by reducing the volume by folding the middle of the bicycle.

In general, the three-wheeled bicycles that are enjoyed by infants and children are relatively bulky and thus can be stored in the house. In addition, when they are carried in a vehicle, they do not enter the trunk well, causing considerable inconvenience.

In order to solve the above problems, a folding three-wheeled bicycle has been developed in which the front frame or the rear frame is folded by a hinge type, but in this case, the volume reduction rate is small and injuries may occur due to hand pinching during folding. happened.

Accordingly, an object of the present invention for solving the problems as described above is to provide a folding three-wheeled bicycle that is easy to carry and store by reducing the volume by folding the middle portion of the three-wheeled bicycle.

The present invention for achieving the object as described above is a saddle frame having both side plates in the "c" shape, the rear frame fixed to the rear wheel and assembled to the saddle frame, the front wheel is fixed and assembled to the saddle frame In the three-wheeled bicycle composed of a front frame, the rear frame is fastened and folded to the first fixing bolt of the side plate, the front frame is fastened to the second fixing bolt of the side plate is characterized in that it is folded.

1 is a front view showing a folding three-wheeled bicycle according to an embodiment of the present invention.

Figure 2 is an exploded perspective view showing a fold structure of the main portion of FIG.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a front view showing a folded state of the foldable three-wheeled bicycle shown in FIG.

<Description of the symbols for the main parts of the drawings>

10: saddle frame 12: first fixing bolt

14: 2nd fixing bolt 18: front frame

20: rear frame 24: first fixing nut

30: 2nd fixing nut 32: connecting pin

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a front view showing a foldable three-wheeled bicycle according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing the foldable structure of the foldable three-wheeled bicycle which is the main part of FIG.

1 to 2, first, the folding three-wheeled bicycle according to the present invention is U-shaped front frame 18 and rear wheel 50 for fixing the saddle frame 10 and the front wheel 40 to fix the saddle largely. It is composed of a rear frame 20 for fixing). The saddle frame 10 is provided with side plates 11 on both sides and has a "c" shape with an empty inside. In addition, the first groove 22 and the second groove 26 are formed on one side of the side plate 11.

And the inside of the saddle frame 10 is fitted with a rear frame 20 for fixing the rear wheel 50. Thereafter, the rear frame 20 is fastened to the saddle frame 10 by a first fixing bolt 12 penetrated in the center of the side plate 11, where the first fixing bolt 12 as an axis The rear frame 20 is folded.

In addition, the front frame 18 of the U-shape for fixing the front wheel 40 is fitted into the front of the saddle frame 10, the saddle by the second fixing bolt 14 penetrating the front of the side plate (11). It is fastened to the frame 10. In addition, the saddle frame 10 is folded around the second fixing bolt 14 as an axis.

In addition, the rear frame 20 and the front frame 18 have holes 16 and 28 formed therein, and the connecting pins 32 are inserted into the holes 16 and 28, and the connecting pins 32 are first fixed. The nut 24 and the second fixing nut 30 are fastened to the rear frame 20 and the front frame 18, respectively.

In this case, more specifically, the connecting pin 32 penetrates the first groove 22 formed in the bottom surface of the side plate 11 as shown in FIG. 2 and is inserted into the first fixing nut 24. And the protruding jaw 25 is fitted into and fixed to the first groove 22, and thus the rear frame 20 is not easily separated.

Hereinafter, the operating state of the folding three-wheeled bicycle configured as described above will be described with reference to FIGS. 1 to 4.

First, when the user wants to fold the three-wheeled bicycle, when the first fixing nut 24 which is tightened on the front surface of the first groove 22 of the side plate 11 of FIG. 1 is loosened, it is inserted into the first fixing nut 24. The rear frame 20 fixed to the saddle frame 10 by the protruding jaw 25 is freed to be folded into the second groove 26 of the side plate with the first fixing bolt 12 as an axis.

Subsequently, when the saddle frame 10 is lifted with the second fixing bolt 14 as the axis, the three-wheeled bicycle is folded around the middle part as shown in FIG. 4. At this time, the front frame 18 is U-shaped, so as to lift the saddle frame 10 as described above, there is no risk of injury to the hand.

Lastly, when fixing the folded rear frame 20 to the saddle frame 10, the first fixing nut 24 located in the second groove 26 of the side plate is pecked again. As the protruding jaw 25 inserted into the second groove 26 is inserted into and fixed to the second groove 26, the rear frame 20 is simply fixed to the saddle frame 10 so that the rear wheel 50 when the three-wheeled bicycle is folded and moved. Will not shake.

As described above, the present invention reduces the volume by folding the middle part of the bicycle in the three-wheeled bicycles for infants and children to ride, without being bound by the place to be stored in the house and easily enter the trunk when moving to the vehicle As it is convenient to move

Claims (3)

Fixing the saddle frame 10 and the rear wheel 50, the rear frame 20 and the front wheel 40 are assembled to the saddle frame 10 in the shape of "c" and both side plates (11) In the three-wheeled bicycle consisting of a front frame 18 assembled to the saddle frame 10, The rear frame 20 and the front frame 18 are fastened and fixed by the connecting pin 32, the rear frame 20 is fastened and folded to the first fixing bolt 12 of the side plate 11, The front frame 18 is a folding three-wheeled bicycle characterized in that the fastening is fastened to the second fixing bolt (14) of the side plate (11). The folding three-wheeled bicycle according to claim 1, wherein the first grooves 22 and the second grooves 26 for fastening the connecting pins 32 are formed at both sides in the center of the side plate 11, respectively. . 3. The rear frame 20 and the front frame 18 are formed with holes 16 and 28, respectively, and the first grooves 22 of the holes 16 and 28 and the side plate 11, respectively. The connecting pin 32 is penetrated therein, and the connecting pin 32 is foldable, characterized in that the first fixing nut 24 and the second fixing nut 30 are fastened to the front and rear frames 18 and 20. 3-wheeled bicycle.