CN219619315U - Bicycle sprocket crank convenient to pile up and place - Google Patents

Abstract

The utility model discloses a bicycle sprocket crank convenient for stacking and placing, which comprises a sprocket body and a crank body, and further comprises: an extension support mechanism; the extension supporting mechanism comprises a fixed side plate, one side of the fixed side plate is connected with a connecting rope, one end of the connecting rope, which is far away from the fixed side plate, is fixedly connected with a fixing bolt, a protection cavity is formed in the bottom of the crank body, and a telescopic sleeve is fixedly connected to the inside of the protection cavity. According to the utility model, through the action of the extension supporting mechanism and the action of supporting the bottom of the chain wheel body and the bottom of the crank body by the extension plate, the bottom of the chain wheel body and the bottom of the crank body can be prevented from being directly contacted with the placing table or the ground, and the friction between the chain wheel body and the crank body and the placing table or the ground is correspondingly avoided, so that the conditions of scratches and the like are avoided, the delivery appearance of the chain wheel body and the crank body is improved, and the use effect of the chain wheel body and the crank body is improved.

Description

Bicycle sprocket crank convenient to pile up and place

Technical Field

The utility model relates to the technical field of bicycle sprocket cranks, in particular to a bicycle sprocket crank convenient to stack and place.

Background

The bicycle is of various kinds, and there are single bicycle, double bicycle and also many people's bicycle, and sprocket crank is the important component part of bicycle.

According to the technical scheme, the chain wheel crank for the bicycle comprises a chain wheel, wherein reinforcing rods which are arranged in a matrix are welded on the inner wall of the chain wheel, a positioning disc is welded on the other end of the reinforcing rods, a connecting plate is arranged on the front surface of the positioning disc, a connecting rod is welded on one side, far away from the positioning disc, of the connecting plate, an adjusting rod is welded on the other end of the connecting rod, a positioning cylinder is movably sleeved on the outer ring of the other end of the adjusting rod, one end, extending into the positioning cylinder, of the adjusting rod is welded with a movable plate, the movable plate is connected with the inner wall of the positioning cylinder in a sliding mode, and symmetrically arranged positioning rods are welded on one side, close to the adjusting rod, of the movable plate.

Compared with the above document, although the strength of the chain wheel is higher under the combined action of all the components in the document, the chain wheel is convenient to position and mount, the whole length of the chain wheel crank is convenient to adjust, and the chain wheel crank is better suitable for different crowds, but in the production process of the chain wheel crank, a large number of chain wheel cranks need to be piled and placed, the chain wheel cranks are easy to be directly contacted with the ground in the piling process of the existing chain wheel cranks, the surface of the chain wheel and the chain wheel cranks are rubbed with a placing table or the ground, scratches and the like are generated, the appearance of leaving a factory is influenced, and therefore the use effect of the chain wheel cranks is reduced.

Disclosure of Invention

The utility model aims to solve the defects that the surface of a chain wheel and a chain wheel crank rubs with a placing table or the ground, scratches are generated, the appearance of a factory is influenced, and the use effect of the chain wheel crank is reduced, and provides a bicycle chain wheel crank convenient to stack and place.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a bicycle sprocket crank convenient to pile up and place, includes sprocket body and crank body, still including: an extension support mechanism;

the extension supporting mechanism comprises a fixed side plate, one side of the fixed side plate is connected with a connecting rope, one end fixedly connected with fixing bolt of the connecting rope far away from the fixed side plate, a protection cavity is formed in the bottom of a crank body, a telescopic sleeve is fixedly connected to the inside of the protection cavity, a telescopic spring is fixedly connected to the inside of the telescopic sleeve, one end of the telescopic spring far away from the telescopic sleeve is connected with a telescopic plate, the telescopic plate slidingly extends to the outside of the telescopic sleeve, one end fixedly connected with of the telescopic plate far away from the telescopic spring extends to the telescopic sleeve, the inside of the telescopic sleeve is slidingly connected with a limiting plate, one side of the limiting plate is fixedly connected with an extending plate, one end fixedly connected with fixing baffle of the limiting plate far away from the extending plate, the telescopic plate is located on one side of the telescopic spring and fixedly connected with sliding rod, the sliding rod extends to the outside of the crank body, and the top of the sliding rod is fixedly connected with pull ring.

Preferably, the fixed side plate is fixedly installed at the top of the crank body, threaded holes are formed in the fixed side plate and the pull ring, and the two threaded holes are correspondingly formed.

Preferably, the sliding grooves are formed in one ends of the telescopic sleeve and the extension sleeve, and the telescopic plate and the extension plate slide to extend to the outer parts of the telescopic sleeve and the extension sleeve through the sliding grooves.

Preferably, the outer side wall of the limiting plate and the inner side wall of the extension sleeve are in sliding fit, and one side of the fixed baffle and one outer side of one end of the extension sleeve are in fit.

Preferably, the crank body and the telescopic sleeve are both provided with sliding holes, and the sliding rod extends to the outside of the crank body through the sliding holes.

Preferably, the outer side wall of the extension sleeve and the inner side wall of the protection cavity are in sliding fit.

Compared with the prior art, the utility model has the beneficial effects that:

according to the bicycle sprocket crank convenient to stack and place, through the action of the extension supporting mechanism and the action of the extension plate on the bottoms of the sprocket body and the crank body, the bottoms of the sprocket body and the crank body can be prevented from being directly contacted with a placing table or the ground, friction between the sprocket body and the crank body and the placing table or the ground is correspondingly avoided, the conditions of scratches and the like are further avoided, the outgoing appearance of the sprocket body and the crank body is improved, and therefore the using effect of the sprocket body and the crank body is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a bicycle sprocket crank that facilitates stacking in accordance with the present utility model;

FIG. 2 is a schematic cross-sectional view of a bicycle sprocket crank body for facilitating stacking in accordance with the present utility model;

FIG. 3 is a schematic view of a bicycle sprocket crank extension plate extending from a bicycle sprocket crank extension plate for easy stacking and placement in accordance with the present utility model.

1, a chain wheel body; 2. a crank body; 3. fixing the side plates; 301. a connecting rope; 302. a fixing bolt; 303. a telescoping sleeve; 304. a telescopic spring; 305. a telescoping plate; 306. an extension sleeve; 307. a limiting plate; 308. an extension plate; 309. a fixed baffle; 3010. a slide bar; 3011. and (5) a pull ring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

As shown in fig. 1-3, a bicycle sprocket crank convenient for stacking and placing, comprising a sprocket body 1 and a crank body 2, and further comprising: an extension support mechanism; the extension supporting mechanism comprises a fixed side plate 3, one side of the fixed side plate 3 is connected with a connecting rope 301, one end of the connecting rope 301 away from the fixed side plate 3 is fixedly connected with a fixing bolt 302, the fixing bolt 302 can be stably positioned on the fixed side plate 3 according to the action of the connecting rope 301, a protection cavity is formed in the bottom of a crank body 2, a telescopic sleeve 303 is fixedly connected to the inside of the protection cavity, a telescopic spring 304 is fixedly connected to the inside of the telescopic sleeve 303, one end of the telescopic spring 304 away from the telescopic sleeve 303 is connected with a telescopic plate 305, the telescopic plate 305 is slidingly extended to the outside of the telescopic sleeve 303, one end of the telescopic plate 305 away from the telescopic spring 304 is fixedly connected with an extension sleeve 306, the inside of the extension sleeve 306 is slidingly connected with a limiting plate 307, one side of the limiting plate 307 is fixedly connected with an extension plate 308, one end of the extension plate 308 away from the limiting plate 307 is fixedly connected with a fixing baffle 309, one side of the telescopic plate 305 positioned on the telescopic spring 304 is fixedly connected with a sliding rod 3010, the sliding rod 3010 extends to the outside of the crank body 2, and the top of the sliding rod 3010 is fixedly connected with a pull ring 3011;

the utility model is further specifically detailed, the fixed side plate 3 is fixedly arranged at the top of the crank body 2, threaded holes are formed in the fixed side plate 3 and the pull ring 3011, the threaded holes are correspondingly formed, sliding grooves are formed in one ends of the telescopic sleeve 303 and the extension sleeve 306, the telescopic plate 305 and the extension plate 308 extend to the outside of the telescopic sleeve 303 and the extension sleeve 306 in a sliding fit manner through the sliding grooves, the outer side wall of the limiting plate 307 is in a sliding fit manner with the inner side wall of the extension sleeve 306, one side of the fixed baffle 309 is in a fit manner with the outer side of one end of the extension sleeve 306, sliding holes are formed in the crank body 2 and the telescopic sleeve 303, the sliding rod 3010 extends to the outside of the crank body 2 through the sliding holes, and the outer side wall of the extension sleeve 306 is in a sliding fit manner with the inner side wall of the protection cavity;

through the setting of above-mentioned technical scheme, according to the effect that extension plate 308 supported sprocket body 1 and crank body 2 bottom, can avoid sprocket body 1 and crank body 2 bottom direct with place the platform or ground and contact, corresponding sprocket body 1 and crank body 2 with place platform or ground and produce friction, and then avoided the condition such as mar, promoted sprocket body 1 and crank body 2 appearance of dispatching from the factory to sprocket body 1 and crank body 2's result of use has been promoted.

As shown in fig. 1-3, the functional principle of the present utility model can be illustrated by the following operation: in the initial state, as shown in fig. 2, the pull ring 3011 is separated from the crank body 2, pulled upwards, and then fixed by the fixing bolt 302, so that the corresponding driving sliding rod 3010 and the expansion plate 305 slide towards the top of the crank body 2, and at this time, the fixing baffle 309 drives the extension plate 308 to be positioned in the extension sleeve 306, and the expansion plate 305 drives the extension sleeve 306 to be positioned in the protection cavity in the crank body 2;

when piling up and placing sprocket body 1 and crank body 2, the staff takes down fixing bolt 302, remove the fixed action of fixed curb plate 3 and pull ring 3011, the expansion plate 305 drives extension sleeve 306 and pops out the outside in the inside protection chamber of crank body 2 this moment, then pulling fixed stop 309, drive extension plate 308 and extend to the outside of extension sleeve 306, make extension plate 308 extend to sprocket body 1's bottom, support its bottom, through the setting of above-mentioned technical scheme, according to the effect that extension plate 308 supported sprocket body 1 and crank body 2 bottom, can avoid sprocket body 1 and crank body 2's bottom to directly contact with placing table or ground, corresponding sprocket body 1 and crank body 2 with place table or ground production friction of having avoided, and then avoided the condition such as mar, sprocket body 1 and crank body 2 ex-factory outward appearance has been promoted, thereby sprocket body 1 and crank body 2's result of use has been promoted.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. Bicycle sprocket crank convenient to pile up and place, including sprocket body (1) and crank body (2), its characterized in that still includes: an extension support mechanism;

the extension supporting mechanism comprises a fixed side plate (3), one side of the fixed side plate (3) is connected with a connecting rope (301), one end of the connecting rope (301) far away from the fixed side plate (3) is fixedly connected with a fixed bolt (302), a protection cavity is arranged at the bottom of the crank body (2), a telescopic sleeve (303) is fixedly connected in the protection cavity, a telescopic spring (304) is fixedly connected in the telescopic sleeve (303), one end of the telescopic spring (304) far away from the telescopic sleeve (303) is connected with a telescopic plate (305), and the expansion plate (305) extends to the outside of the expansion sleeve (303) in a sliding manner, one end of the expansion plate (305) far away from the expansion spring (304) is fixedly connected with an extension sleeve (306), a limiting plate (307) is connected inside the extension sleeve (306) in a sliding way, an extension plate (308) is fixedly connected to one side of the limiting plate (307), one end of the extension plate (308) far away from the limiting plate (307) is fixedly connected with a fixed baffle (309), a sliding rod (3010) is fixedly connected to one side of the expansion plate (305) positioned on the expansion spring (304), and the sliding rod (3010) extends to the outside of the crank body (2), the top of the sliding rod (3010) is fixedly connected with a pull ring (3011).

2. The bicycle sprocket crank convenient for stacking and placing according to claim 1, wherein the fixed side plate (3) is fixedly installed at the top of the crank body (2), threaded holes are formed in the fixed side plate (3) and the pull ring (3011), and the two threaded holes are correspondingly formed.

3. The bicycle sprocket crank as set forth in claim 1, wherein the telescopic sleeve (303) and the extension sleeve (306) are provided with sliding grooves at one ends thereof, and the telescopic plate (305) and the extension plate (308) are slidably extended to the outside of the telescopic sleeve (303) and the extension sleeve (306) through the sliding grooves.

4. The bicycle sprocket crank as set forth in claim 1, wherein the outer side wall of the limiting plate (307) is slidably attached to the inner side wall of the extension sleeve (306), and one side of the retaining plate (309) is attached to an outer side of one end of the extension sleeve (306).

5. The bicycle sprocket crank convenient for stacking and placing according to claim 1, wherein sliding holes are formed in the crank body (2) and the telescopic sleeve (303), and the sliding rod (3010) extends to the outside of the crank body (2) through the sliding holes.

6. The bicycle sprocket crank as set forth in claim 1, wherein the outer sidewall of the extension sleeve (306) is slidably engaged with the inner sidewall of the protective cavity.