CN216805717U

CN216805717U - Avoid sprocket crank of dislocation

Info

Publication number: CN216805717U
Application number: CN202220225401.7U
Authority: CN
Inventors: 郝润波
Original assignee: Tianjin Kuayue Vehicle Industry Co ltd
Current assignee: Tianjin Kuayue Vehicle Industry Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-06-24
Anticipated expiration: 2032-01-27

Abstract

The utility model discloses a chain wheel crank capable of avoiding dislocation, which comprises a chain wheel and a crank, wherein two ends of the chain wheel are respectively provided with a limiting plate, the crank is arranged at one end of the chain wheel, the outer part of one end of the crank is fixedly connected with a fixing plate, the inner part of one end of the crank is provided with a quadrangular hole, and the middle position of one end of the chain wheel is fixedly connected with a quadrangular key. This avoid sprocket crank of dislocation passes through the inboard fixedly connected with annular frame of limiting plate, three locking holes of group have evenly been seted up on the annular frame, when using, utilize the bolt to run through the locking hole and fix the both ends at the sprocket with the installation of annular frame, the limiting plate at sprocket both ends can be in sprocket both ends on the sprocket this moment, can carry on spacingly to the chain on the sprocket like this, avoid chain and sprocket to take place the dislocation, improve the stability of power transmission, what solve is that chain and sprocket take place the dislocation easily, lead to the relatively poor problem of stability of power transmission.

Description

Avoid sprocket crank of dislocation

Technical Field

The utility model relates to the technical field of chain wheel cranks, in particular to a chain wheel crank capable of avoiding dislocation.

Background

The chain wheel is a wheel with embedded tooth type buckled chain teeth and is used for being meshed with blocks with accurate pitches on a chain link ring or a cable rope, the chain wheel and a crank of the bicycle are main parts for power transmission, and the chain wheel of the crank of the conventional bicycle are easily staggered, so that the stability of power transmission is poor; the connection between the crank and the chain wheel is not stable enough, so that the crank is often loosened; the pedal is inconvenient to be firmly arranged on the crank, and the use is not convenient enough; a sprocket crank avoiding misalignment has been proposed to solve the above problems.

Disclosure of Invention

The utility model aims to provide a chain wheel crank capable of avoiding dislocation, which aims to solve the problem that the stability of power transmission is poor due to the fact that a chain and a chain wheel are easy to dislocate in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an avoid sprocket crank of dislocation, includes sprocket and crank, the both ends of sprocket are provided with the limiting plate respectively, the one end at the sprocket is installed to the crank, the outside fixedly connected with stationary blade of crank one end, the inside of crank one end is provided with the quadrangle hole, the intermediate position department fixedly connected with quadrangle key of sprocket one end, articulate other end fixedly connected with ring flange.

Preferably, a fixing bolt penetrates through one end of the fixing piece, a positioning hole is formed in the fixing piece, a positioning column is fixedly connected to the chain wheel, and the fixing piece is fixedly mounted on the chain wheel through the fixing bolt.

Preferably, the outer diameter of the four-corner key is smaller than the inner diameter of the four-corner hole, and the four-corner key is inserted into the four-corner hole.

Preferably, four groups of fixing pieces are arranged outside one end of the crank at equal intervals, and positioning columns on the fixing pieces correspond to positioning holes in the chain wheel one by one.

Preferably, the inner side of the limiting plate is fixedly connected with an annular frame, three groups of locking holes are uniformly formed in the annular frame, and the limiting plates are symmetrically arranged at two ends of the chain wheel.

Preferably, the flange plate is evenly provided with mounting holes, the other end of the crank is provided with insertion holes, the other end of the crank is circular, and the flange plate and the other end of the crank are arranged in a concentric circle.

Compared with the prior art, the utility model has the beneficial effects that: the dislocation-preventing chain wheel crank not only avoids the dislocation of a chain and a chain wheel, improves the stability of power transmission, realizes the stable connection between the crank and the chain wheel, is not easy to loosen, but also realizes the convenient and firm installation of pedals on the crank, and is convenient to use;

(1) the annular frame is fixedly connected to the inner side of the limiting plate, three groups of locking holes are uniformly formed in the annular frame, the limiting plates are symmetrically arranged at two ends of the chain wheel, when the chain wheel is used, the annular frame is installed and fixed at two ends of the chain wheel by penetrating through the locking holes through bolts, and the limiting plates at two ends of the chain wheel are located at two ends of a sprocket on the chain wheel, so that a chain on the sprocket can be limited, the chain is prevented from being dislocated with the sprocket, and the stability of power transmission is improved;

(2) the fixing bolt penetrates through one end of the fixing piece, the positioning hole is formed in the fixing piece, the chain wheel is fixedly connected with the positioning column, the fixing piece is fixedly installed on the chain wheel through the fixing bolt, when the fixing piece is used, the quadrangular hole in the crank is inserted outside the quadrangular key, then the fixing piece is fixed on the chain wheel through the fixing bolt, the positioning column on the chain wheel can penetrate through the positioning hole at the moment, the positioning column can share the stress between the quadrangular hole and the quadrangular key inside the positioning hole, and therefore abrasion between the quadrangular hole and the quadrangular key is reduced, and the phenomenon that the crank is loosened due to abrasion between the quadrangular hole and the quadrangular key can be prevented;

(3) evenly seted up the mounting hole through on the ring flange, the articulate other end is provided with the jack, and the articulate other end is circularly, and the ring flange is concentric circles setting with the articulate other end, when using, utilizes the ring flange to connect pedal to make pedal center pin insert the inside of jack, can make crank and pedal between be connected more firm like this, easy operation, the equipment is firm and convenient.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

fig. 2 is a schematic front view of a limiting plate according to the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 4 is a schematic view of the crank of the present invention in a front view and partially enlarged.

In the figure: 1. a sprocket; 2. a quadrangular hole; 3. a limiting plate; 4. a four-angle key; 5. a fixing sheet; 6. a crank; 7. fixing the bolt; 8. an annular frame; 9. a locking hole; 10. positioning holes; 11. a positioning column; 12. mounting holes; 13. a flange plate; 14. and (4) inserting the jack.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-4, a sprocket crank for avoiding dislocation comprises a sprocket 1 and a crank 6, wherein two ends of the sprocket 1 are respectively provided with a limiting plate 3, the crank 6 is installed at one end of the sprocket 1, the outside of one end of the crank 6 is fixedly connected with a fixing plate 5, the inside of one end of the crank 6 is provided with a rectangular hole 2, a rectangular key 4 is fixedly connected at the middle position of one end of the sprocket 1, and the other end of the crank 6 is fixedly connected with a flange 13;

the inner side of the limiting plate 3 is fixedly connected with an annular frame 8, three groups of locking holes 9 are uniformly formed in the annular frame 8, and the limiting plates 3 are symmetrically arranged at two ends of the chain wheel 1;

specifically, as shown in fig. 1 and 2, when the chain limiting device is used, the bolt penetrates through the locking hole 9 to fix the ring-shaped frame 8 at two ends of the chain wheel 1, and the limiting plates 3 at two ends of the chain wheel 1 are located at two ends of the sprocket on the chain wheel 1, so that the chain on the sprocket can be limited, the chain and the sprocket are prevented from being dislocated, and the stability of power transmission is improved.

Example 2: a fixing bolt 7 penetrates through one end of the fixing piece 5, a positioning hole 10 is formed in the fixing piece 5, a positioning column 11 is fixedly connected to the chain wheel 1, the fixing piece 5 is fixedly mounted on the chain wheel 1 through the fixing bolt 7, the outer diameter of the four-corner key 4 is smaller than the inner diameter of the four-corner hole 2, and the four-corner key 4 is inserted into the four-corner hole 2;

four groups of fixing pieces 5 are arranged outside one end of the crank 6 at equal intervals, and positioning columns 11 on the fixing pieces 5 correspond to positioning holes 10 on the chain wheel 1 one by one;

specifically, as shown in fig. 1 and 3, when the crank locking device is used, the quadrangular hole 2 in the crank 6 is inserted outside the quadrangular key 4, the fixing piece 5 is fixed on the chain wheel 1 by the fixing bolt 7, the positioning column 11 on the chain wheel 1 can penetrate through the positioning hole 10, the positioning column 11 can share the stress between the quadrangular hole 2 and the quadrangular key 4 in the positioning hole 10, so that the abrasion between the quadrangular hole 2 and the quadrangular key 4 is reduced, and the crank 6 can be prevented from being loosened due to the abrasion between the quadrangular hole 2 and the quadrangular key 4.

Example 3: the flange 13 is uniformly provided with mounting holes 12, the other end of the crank 6 is provided with a jack 14, the other end of the crank 6 is circular, and the flange 13 and the other end of the crank 6 are arranged in a concentric circle;

specifically, as shown in fig. 1 and 4, when in use, the pedals are connected by the flange 13, and the central shaft of the pedals is inserted into the insertion holes 14, so that the connection between the crank 6 and the pedals is more stable, the operation is simple, and the assembly is stable and convenient.

The working principle is as follows: when the utility model is used, firstly, the ring-shaped frame 8 is installed and fixed at two ends of the chain wheel 1 by penetrating the locking hole 9 through the bolt, at the same time, the limit plates 3 at two ends of the chain wheel 1 are positioned at two ends of the sprocket on the chain wheel 1, thus the chain on the sprocket can be limited, the dislocation between the chain and the sprocket is avoided, the stability of power transmission is improved, secondly, the quadrangular hole 2 on the crank 6 is inserted outside the quadrangular key 4, then the fixing piece 5 is fixed on the chain wheel 1 by using the fixing bolt 7, at the same time, the positioning column 11 on the chain wheel 1 penetrates through the positioning hole 10, the stress between the quadrangular hole 2 and the quadrangular key 4 can be shared by the positioning column 11 inside the positioning hole 10, thereby the abrasion between the quadrangular hole 2 and the quadrangular key 4 is reduced, thus the looseness phenomenon of the crank 6 caused by the abrasion between the quadrangular hole 2 and the quadrangular key 4 can be prevented, and finally, the pedal is connected by the flange plate 13, and the central shaft of the pedal is inserted into the inner part of the insertion hole 14, so that the connection between the crank 6 and the pedal is more stable, the operation is simple, and the assembly is stable and convenient.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an avoid sprocket crank of dislocation, includes sprocket (1) and crank (6), its characterized in that: the both ends of sprocket (1) are provided with limiting plate (3) respectively, the one end at sprocket (1) is installed in crank (6), outside fixedly connected with stationary blade (5) of crank (6) one end, the inside of crank (6) one end is provided with four corner holes (2), fixedly connected with four corner key (4) are located to the intermediate position of sprocket (1) one end, the other end fixedly connected with ring flange (13) of crank (6).

2. A misalignment-preventing sprocket crank according to claim 1, wherein: fixing bolt (7) has been run through to the one end of stationary blade (5), locating hole (10) have been seted up on stationary blade (5), fixedly connected with reference column (11) on sprocket (1), stationary blade (5) are through fixing bolt (7) fixed mounting on sprocket (1).

3. A misalignment-preventing sprocket crank according to claim 1, wherein: the outer diameter of the four-angle key (4) is smaller than the inner diameter of the four-angle hole (2), and the four-angle key (4) is inserted into the four-angle hole (2).

4. A misalignment-preventing sprocket crank according to claim 1, wherein: the four groups of fixing pieces (5) are arranged outside one end of the crank (6) at equal intervals, and positioning columns (11) on the fixing pieces (5) correspond to positioning holes (10) in the chain wheel (1) one by one.

5. A misalignment-preventing sprocket crank according to claim 1, wherein: the chain wheel is characterized in that the inner side of the limiting plate (3) is fixedly connected with an annular frame (8), three groups of locking holes (9) are uniformly formed in the annular frame (8), and the limiting plate (3) is symmetrically arranged at two ends of the chain wheel (1).

6. A misalignment-preventing sprocket crank according to claim 1, wherein: mounting holes (12) are uniformly formed in the flange plate (13), an insertion hole (14) is formed in the other end of the crank (6), the other end of the crank (6) is circular, and the flange plate (13) and the other end of the crank (6) are arranged in a concentric circle mode.