Rubber locking device for bicycle seat bag

A rubber locking device for a bicycle seat bag is composed of a rubber strip which is fastened to the top of the seat bag by a clamp board, two hook bases correspondingly provided at two sides of the seat bag for fastening to the two ends of the rubber strip. The rubber strip is provided with pluralities of locking holes so that when the rubber strip goes through above the shafts under the bicycle seat, the two ends of the rubber strip are extensively pulled and the most appropriate locking holes can be fastened to the hook bases at the two sides of the seat bag to efficiently bind with the shafts under the seat and to obtain a preferred shock-absorbing function. A U fastener base provided at the front of the seat bag is composed of a U frame and a resilient rubber ring. The U fastener base is provided with locking hooks at two ends, such that after the U frame is leant against the seat post, the rubber ring is resiliently pulled and held around the other side of the seat post to lock with one of the hooks at the other side to firmly fasten to the underside of the seat.

BACKGROUND OF THE INVENTION

(a) Technical Field of the Invention

The present invention relates to a rubber locking device for a bicycle. By way of the locking device, the seat bag can be installed and detached easily and instantly. Besides, as the locking device has the function of shock absorbing and can be firmly fastened to the bicycle, it is extremely applicable to bicycles.

(b) Description of the Prior Art

Among locking devices of the prior art, U.S. Pat. No. 5,245,517 disclosed a T clamp shaft which is fastened to the top of the seat bag, while a U clip is provided at the front end of the seat bag, thereby the T shaft is clamped to the two shafts under the seat, pulled forward to allow the U clip to smoothly lock onto the seat post under the seat for fastening purposes.

However, as the T clamp shaft must be leant against the underside of the seat and turned by force to clamp with the shaft, it is rather inconvenient in operation to those unskilled in the art.

SUMMARY OF THE INVENTION

The primary object of the invention is to provide a rubber locking device for a bicycle seat bag, which can allow detachment from the seat bag without utilizing any tool and obtain the purpose of convenient use.

Another object of the invention is to provide a rubber locking device for a bicycle seat bag, which has excellent shock-absorbing property and can firmly fasten the seat bag to avoid noise occurred by crush at the time of being in use.

To obtain the above objects, the rubber locking device for a bicycle seat bag according to the invention is made of plastic or rubber materials, such that even if the locking device is exposed to the rain, it would not become rusty. The locking device according to the invention includes a rubber strip, a clamp board, pluralities of hook bases, fastener boards, screws, a soft spacer, a U fastener base and a rubber ring, etc. Primarily, the rubber strip is assembled to fasten to the top of the seat bag, while locking bases are fastened to the left and right sides of the seat bag. The U fastener base and the rubber ring are fastened to the front end of the seat bag, such that the U fastener base can be fastened to the locking hook at one side of the U fastener base and then lean against the vertical seat post, and the rubber ring is resiliently pulled around the seat post to lock with the locking hook at the other side of the U fastener base. Furthermore, as the rubber strip is fastened to hook bases at two sides of the seat bag via the locking holes thereon after passing through the shafts under the seat, the rubber strip is integrally bound and fastened to the seat and the seat bag via its resilience recovery. Accordingly, the effect of quick installment and detachment can be accomplished.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

As shown inFIGS. 1 to 3, a rubber locking device according to the invention is composed of a rubber strip1, a clamp board2, two hook bases3, four fastener boards4, four screws5, a soft spacer6, a U fastener base9and a rubber ring10.

The rubber strip1is in form of a long board provided with a central hole11, two positioning crevices at two sides of the central hole11, pluralities of locking holes13arranged on the rubber strip1, a pull14and anti-slip roughness15at each of the extending rear ends of the rubber strip1.

The clamp board2is provided at the bottom wit a central post, which is provided with positioning blocks22at two sides and a central screw hole23inside. Referring toFIGS. 2 and 3, when assembling the rubber strip1onto the top of the bicycle seat bag7, it is required tat the seat bat7is provided with a through hole71and two slots72, such that the central post21on the clamp board2goes through the central hole11of the rubber strip1and then the through hole71on the seat bag7, while the positioning blocks22go through the positioning crevices12of the rubber strip1and then the slots72on the seat bag7. By way of mounting a fastener board onto the central post21and fastening the screw5from the interior of the seat bag7through the screw hole42to the central screw hole23, the rubber strip1can be firmly fastened to the seat bag7. As the protruding positioning blocks22can be engaged into the positioning crevices12and then the slots on the bag7, the clamp board2and rubber strip1would not rotate to deflect from each other.

Each of the hook bases3is provided with two protruding positioning posts31at one end, a hook at the other end, and a screw hole32between the two positioning posts31. Further refer toFIGS. 2 and 3, to firmly fasten the hook bases3to the two sides of seat bag7, the seat bag7need be provided with three holes at each side, such that the positioning posts31at the hook bases3will go through the holes73on the sides of the seat bag7and the fastener boards4will be mounted onto the positioning posts31via the positioning holes41. A screw5is screwed from the interior of the seat bag7through the screw hole41to the screw holes32for fastening purpose.

The U locking base9is provided with two protruding positioning posts91at one end, a screw hole92between the two positioning posts91, a U frame93, which has a locking hook94at one end and two adjusting hooks95at the other end, corresponding to the positioning posts92, and a soft spacer6for cushioning inside of the U frame93. A rubber ring10having a pull14and anti-slip roughness15at one end is hooked with the locking hook94. As shown, when assembling the U fastening base9to the front end of the seat bag7, which is also provided with three holes73, the two positioning posts91on the U fastening base9go through the holes73on the seat bag7. The fastening board4is mounted onto the positioning posts91via the positioning holes41and screwed integrally to the seat bag7via a screw5, which goes through the screw hole42to the screw hole92.

FIGS. 4 and 5show the rubber locking device being combined to the seat bag7. While there are two shafts81under the bicycle seat and a seat post82vertically and downwardly extending from the middle of the seat bottom, the U frame93of the U fastener base92is leant against the seat post82, pulled by the user's fingers at the pull14such that the rubber ring10will flexibly transform to lock around one of the adjusting hooks95. As there are two different sizes for the seat post82, i.e. the small and the big, in the case of big seat post82, the rubber ring10may be locked to the hook95adjacent to the free end of the U fastener base9, whereas in the case of small seat post82, the rubber ring10may be locked to the hook95at the remote end.

After the front end of the seat bag7has been well fastened, the rubber strip1can be resiliently pulled to lock into the hooks33with the locking holes13at the most preferred position. Accordingly, the seat bag7is fastened to the bicycle via the three positions at the two sides and the front, as well as via the rubber strip1which is full of resilience. The user can freely and conveniently assemble or detach the seat bag without the need of any tool.

In addition, while the rubber strip1, hook bases3and the U fastener base9are fastened to the seat bag7via screws5going through bag canvas and the fastener boards4, the fastening elements can be substituted by nails or the like appreciated by those skilled in the relevant art.

Concluded above, the invention describes a rubber locking device for a bicycle seat bag, which can be freely fastened to the underside of the seat. As the integral design of the invention is simple, it can allow DIY (do-it-yourself) by the user. The novelty features of this invention are certain and have been shown and described and are pointed out in the annexed Claims.