Anti-drop's bicycle speed change gear
Technical Field
The invention relates to a bicycle part, in particular to an anti-falling bicycle speed changing device.
Background
The bicycle speed variator is a common bicycle part and has the function of changing the speed of a bicycle by changing the matching of a chain and gear discs with different front and rear sizes. The rear pinion of the existing transmission is usually directly hung on a support, when the road condition is bumpy, and a user changes the speed, the chain can be loosened momentarily, and the chain can fall off from the rear pinion, so that the riding safety is affected.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art, and provides an anti-falling bicycle speed changing device.
The technical problem of the invention is mainly solved by the following technical scheme:
the utility model provides an anti-drop's bicycle speed change gear, anti-drop's bicycle speed change gear contain a fixed bolster, the bottom of fixed bolster be equipped with a detachable sprocket, the both sides of sprocket be equipped with a detachable antiskid unit respectively.
As a preferred embodiment of the present invention, the lower end of the fixing bracket is provided with a pair of mounting long holes, the anti-skid device is provided with a pair of fixing through holes and a wedge-shaped protection frame, and a pair of fixing screws respectively penetrate through the fixing through holes and the mounting long holes and are connected with a pair of fixing nuts.
As a preferred embodiment of the invention, the antiskid device is made of nylon.
The anti-falling bicycle speed changing device utilizes the anti-slipping device made of nylon, and the wedge-shaped protective frame is arranged on the anti-slipping device, so that the position of a chain can be effectively limited, the chain is thoroughly prevented from falling off from a rear pinion, the reliability and the stability of a bicycle speed changer are improved, the structure is simple, the installation is convenient, and the practicability is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a perspective view of the anti-dropout bicycle shifting apparatus of the present invention;
FIG. 2 is an exploded perspective view of the anti-dropout bicycle shifting apparatus of FIG. 1;
FIG. 3 is an enlarged detail view of area A of the anti-dropout bicycle shifting apparatus of FIG. 2;
wherein,
1. a drop-proof bicycle transmission; 2. fixing a bracket; 21. installing a long hole; 3. a sprocket; 4. an anti-skid device; 41. a fixing through hole; 42. protecting the frame; 5. fixing a nut; 6. and fixing the screw.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
As shown in fig. 1 to 3, the
anti-drop bicycle transmission 1 of the present invention comprises a
fixing bracket 2, a
detachable chain wheel 3 is disposed at the bottom of the
fixing bracket 2, and a detachable
anti-slip device 4 is disposed at each side of the
chain wheel 3.
The lower end of the
fixing bracket 2 is provided with a pair of mounting long holes 21, the
antiskid unit 4 is provided with a pair of fixing through
holes 41 and a wedge-shaped
protective frame 42, and a pair of
fixing screws 6 respectively penetrate through the fixing through
holes 41 and the mounting long holes 21 and are connected with a pair of fixing nuts 5.
The
anti-skid device 4 is made of nylon.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.