CN2166057Y - Anti-dismounting cover of ring for bicycle - Google Patents

Abstract

The utility model relates to an anti-dismounting cover of a ring for a bicycle. The utility model is composed of a fixing screw (1), a ring cover (2), and a transitional pup joint (3), wherein, the fixing screw is threaded in the round hole at the middle of the ring cover, and screw thread at the lower end of the fixing screw is screwed in the transitional pup joint; a ring cover which can not be dismounted without a screw driver or other tools is provided with the anti-dismounting function on the structure so as to prevent the missing effectively and ensure the normal use of the ring of the bicycle. The ring cover is not only used for a wrenching type ring but also a circular ring. Because of the free state of the bell cover, the ringing is clearer and more euphonious.

Description

Anti-dismounting cover of ring for bicycle

The utility model relates to a kind of anti-bicycle lid that unloads, and is one of bicycle part, belongs to the daily category of the vehicle.

Common various bicycles lids are not owing to its structural reason has anti-unloading functions, and anyone twists and can unload easily with hand one, thereby bell often takes place cover and unloaded incident steathily by people (particularly children), make troubles to the rider, also are unfavorable for safety.Though the bell losing of cover loses not quite economically, inconvenience and the trouble brought because of the bell losing of cover make people feel puzzlement very much.

Task of the present utility model is to provide a kind of anti-bicycle lid that unloads, this kind bell lid structurally has anti-unloading functions, anyone can not unload it under the situation of not using instruments such as screwdriver, thereby can prevent loss effectively, guarantees the normal use of bicycle.

The utility model is achieved in that it is made up of fix screw (1), bell lid (2), transition pipe nipple (3).Its structure and assembling feature are as follows: fix screw (1) penetrates in the circular hole at bell lid (2) middle part, and screw (1) lower end is screwed into transition pipe nipple (3) by screw thread, and transition pipe nipple (3) lower end is connected with the anchor shaft (4) of bicycle by screw thread again.Each parts of the utility model are assembled together by above-mentioned assembled relation, make the screw thread between adjacent each parts be in the state of tightening, bicycle is normally used.At this moment, bell lid (2) serves as that axle is positioned at filtration pipe nipple (3) top with the polished rod section at fix screw (1) middle part then, is in free state, and like this, screw can be not stressed when turning round the bell lid with hand, and the bell lid can rotate, and screw is motionless, thereby has reached anti-purpose of unloading.

The utility model is simple in structure, is easy to processing, does not increase the parts of existing bicycle, and can reduce extrusion process one.Adopt this kind bell lid can guarantee not stolen the unloading of bell lid, thereby promote safety by bike.This kind bell lid is not only applicable to board-like bell, is applicable to rotary bell yet, because the bell lid is in free state, the tinkle of bells can be louder melodious.

Accompanying drawing is the utility model structural representation.Among the figure, each parts is in decomposing state, puts according to assembling sequence.

Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated.

In the utility model, fix screw (1) end face is plane or arc surface, one cutting is arranged on it, so that tighten or unload pine with screwdriver, the thread segment diameter is slightly smaller than bell lid (2) eyelet internal diameter and matches with transition pipe nipple (3) negative thread, and the polished rod segment length between end face and the thread segment is slightly larger than bell lid (2) thickness; Bell lid (2) shape and existing finished parts are basic identical, and difference is that its central authorities have the circular hole that a diameter is a bit larger tham fix screw (1) thread segment diameter; The negative thread that transition pipe nipple (3) total length has diameter and screw (1) external screw thread size to match, the length of this pipe nipple are slightly larger than screw (1) and bicycle anchor shaft (4) length sum, effectively tighten guaranteeing.

Claims (4)

1, a kind of anti-bicycle lid that unloads is made up of fix screw (1), bell lid (2), transition pipe nipple (3), it is characterized in that fix screw (1) penetrates in the circular hole at bell lid (2) middle part, and its lower end screw thread is screwed into transition pipe nipple (3).

2, the anti-bicycle lid that unloads according to claim 1, it is characterized in that, fix screw (1) end face is plane or arc surface, one cutting is arranged on it, the thread segment diameter is slightly smaller than bell lid (2) eyelet internal diameter and matches with transition pipe nipple (3) negative thread, and the polished rod segment length between end face and the thread segment is slightly larger than bell lid (2) thickness.

3, the anti-bicycle lid that unloads according to claim 1 is characterized in that bell lid (2) shape and existing finished parts are basic identical, and difference is that its central authorities have the circular hole that a diameter is a bit larger tham fix screw (1) thread segment diameter.

4, the anti-bicycle lid that unloads according to claim 1 is characterized in that, the negative thread that transition pipe nipple (3) total length has diameter and screw (1) external screw thread to match, and its length is slightly larger than screw (1) and bicycle anchor shaft length sum.

Images