Background Art Generally, as an apparatus of injecting air into a pneumatic tire of a bicycle, a common pump consisting of a piston movable in a cylinder for compressing and pumping the air, a rod and a handle for moving the piston, and a hose for guiding the compressed air into the pneumatic tire is used. Otherwise, a specially designed compact pump is used for injecting the air into the pneumatic tire. The compact pump is portable to be used anywhere at traveling, but it is attached to the bicycle by additional expensive means.

In order to solve the above problem, an air injecting apparatus mountable in a handle frame has been proposed by Koran Utility-Model Publication No. 219893 issued to the applicant.

Some problems are presented when the air injecting apparatus disclosed in the publication is installed in the handle frame. Specifically, according to the handle frame of the bicycle, the handle shaft assembled with a handle is fixed to the upper portion of the front holding frame for supporting a saddle. The lower portion of the holding frame is fixed to a sleeve coupled to the fork sleeve for securing the front wheel. When the sleeve is assembled by an assembling rod and a wedge, the handle shaft is fixed to the sleeve by the adhesive force produced between the

assembling rod and the wedge. The long assembling rod is installed in the handle shaft and the sleeve, and the lower end of the assembling rod is threadly engaged to the wedge. As the results, because the air injecting apparatus may not be installed in an inside of the handle frame, the air injecting apparatus has to be installed to a saddle frame or other position. Therefore, there are several problems related with the use and manufacture thereof.

Disclosure of the Invention Therefore, an object of the present invention is to solve the problems involved in the prior art, and to provide an air injecting apparatus, mounted in a handle frame of a bicycle, for injecting the air int o a pneumatic tire of the bicycle anywhere, in which the air injecting apparatus has a simple structure, and may be installed in the common bicycle without increasing the expense.

In order to accomplished the above-mentioned object, the present invention provides an air injecting apparatus mounted in a handle frame of a bicycle including a handle frame, the handle frame having a handle shaft fixed to an upper portion of a front holding frame coupled to a saddle frame, and a sleeve coupled to the handle shaft, the air injecting apparatus comprising: a cylinder disposed in the handle shaft and having an assembling rod, the cylinder fixed to the handle shaft by a nut; a piston movably disposed in the cylinder; a knob secured to an upper portion of a rod fixed to the piston, with the rod penetrating the nut; a wedge threadly engaged to the assembling rod having in a center thereof a passage and contacted to the handle shaft, with an inclined surface of the wedge having the same angle as an inclined surface formed at a lower portion of the handle shaft; and a hose coupled at one end to a free end of the assembling rod and at the other end to a nozzle.

Brief Description of the Drawings The above objects, other features and advantages of the present invention will become more apparent by describing the preferred embodiment thereof with reference to the accompanying drawings, in which: Fig. 1 is a partially perspective view of an air injecting apparatus mountable in a handle frame of a bicycle according to one prefe rred embodiment.

Fig. 2 is a cross-sectional view of an air injecting apparatus mountable in a handle frame of a bicycle according to one preferred embodiment.

Fig. 3 is a cross-sectional view taken along a line A-A in Fig. 2.

Fig. 4 is a perspective view of a portion of the air injecting apparatus.

Fig. 5 is a cross-sectional view of an air injecting apparatus mountable in a handle frame of a bicycle according to another preferred embodiment.

Best Mode for Carrying Out the Invention Reference will now be made in detail to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

Figs. 1 to 4 show a structure of an air injecting apparatus mountable in a handle frame of a bicycle according to one preferr ed embodiment. As shown in the drawings, the handle frame 1 includes a handle shaft 10 fixed to an upper portion of a front holding frame 36, and a sleeve 34 having one end coupled to the handle shaft 10 and the other end coupled to a fork sleeve 38 for s ecuring a front wheel. The handle shaft 10 includes a cylinder 22 disposed in the handle shaft 10 and having an assembling rod 20, a piston 25 disposed movable in the cylinder 22, and a knob 28 secured to an upper portion of a rod fixed to the piston 25. A wedge 30 is threadly engaged to the assembling rod 20, and is contacted to the handle shaft. The assembling rod 20 has at a center thereof a passage for guiding the compressed air.

One end of a hose 40 is mounted to a free end of the assembling rod, a nd a nozzle

42 is attached to the other end of the hose 40.

Now, the structure of the air injecting apparatus will be described in detail with reference to accompanying drawings.

According to the structure of the handle frame 1 of the bicycle, the handle shaft 10 assembled with a handle 14 is fixed to the upper portion of the front holding frame 36 for supporting a saddle. The lower portion of the holding frame 36 is fixed to the sleeve 34 coupled to the fork sleeve 38 for securing the front wheel.

If the sleeve 34 is rotated by the handle, the fork sleeve 38 coupled to the sleeve is also rotated to change the direction of the front wheel. At that time, the handle shaft 10 is formed at it lower end with an inclined surface 12, and the assembling rod 20 is inserted into the lower end of the handle shaft, thereby providing means of fixing the handle shaft 10 and the sleeve 34. The wedge 30 is threadly engaged to the lower end of the assembling rod 20, with an inclined surface 32 of the wedge being contact wi th the inclined surface 12 of the handle shaft 10.

The handle shaft 10 is assembled to the sleeve by fastening a nut 18 to a threaded portion of the upper end of the assembling rod 20. If the nut 18 is rotated, the assembling rod 20 is also rotated, so t hat the wedge is pulled up and thus the wedge moves along the inclined surface 12. At that time, the wedge is pressed against the inside surface of the sleeve, thereby rigidly fixing the handle shaft 10 and the sleeve 34.

The assembling rod 20 inserted in to the handle shaft 10 has at a center thereof the passage 23, and the cylinder 22 is disposed on the upper portion of the assembling rod 20. The threaded portion 24 formed at the upper portion of the cylinder is fastened to the handle shaft by the nut 18. The cylinder is provided therein with the piston 25. The rod 26 coupled to the piston penetrates the nut 18 so that the knob 28 is attached to the end of the rod 26.

The knob 28 may be formed at various shapes and designs, and may

accommodate repairs tools for the bicycle therein. The hose 40 is mounted to the free end of the assembling rod 20, such that the interior of the cylinder is communicated with the front and rear wheels. The hose 40 is wound in a coil shape within the sleeve 34, and has a len gth in such a way that it can reach an air inlet of the rear wheel. The hose 40 has at the other end thereof the nozzle 42 for connecting it to the air inlet of the wheel and injecting the air into the wheel.

The detailed description of a check valve mounted in the cylinder and common components is omitted herein, and the applying state of the present invention will now be described.

When the pneumatic tire is flat or is supplied with the air after it is repaired, the hose 40 is drawn from the sleeve to co nnect the nozzle to the air inlet of the tire.

If the knob 28 is reciprocated up and down in succession, the air in the cylinder 22 is compressed, and the compressed air is supplied to the pneumatic tire through the passage 23 of the assembling rod 20 and the hose to file the pneumatic tire with the compressed air.

Fig. 5 shows another embodiment of the present invention. As shown in Fig.

5, a tube 45 connected to the lower end of the assembling rod 20 is exposed at a proper position of the sleeve through a first connecting member 48. A separate hose 44 has at one end thereof a second connecting member 46 which is connected to the first connecting member 48, such that the hose may be mounted to the tube 45, if necessary. Preferably, the hose is provided in a coil shape, such that it may be charged in a space of the bicycle such as an inside of the handle.

While the present invention has been described and illustrated herein with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made therein without departing from the spirit and scope of the invention. Thus, it is intended that the present invention covers the modifications and variations of this invention that c ome

within the scope of the appended claims and their equivalents.

Industrial Applicability As apparent from the above description, the air injecting apparatus according to the present invention is installed in the handle frame of the common bicycle, su ch that the air may be injected into the pneumatic tire of the bicycle anywhere. In particular, the air injecting apparatus has a simple structure, and may be easily installed to the common bicycle without increasing the expense.