CN214729439U

CN214729439U - Sprocket crank with prevent deformation structure

Info

Publication number: CN214729439U
Application number: CN202023217324.0U
Authority: CN
Inventors: 徐辉; 徐文华; 姚夕江; 赵春阳; 徐兰英
Original assignee: Taizhou City Lide Machinery Co ltd
Current assignee: Taizhou City Lide Machinery Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-11-16
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a sprocket crank with prevent structure of deforming, including sprocket and enhancement layer, the left and right sides of sprocket all is connected with the fixture block, and the external connection of fixture block has the draw-in groove, the other end of draw-in groove is connected with the protection wheel, and the other end of protection wheel is provided with the crank body, the right side of crank body is provided with the pentagonal screw, and the surface connection of pentagonal screw has the internal thread, the internal screw thread inside is provided with first through-hole, and the inside of first through-hole is provided with the second through-hole, the enhancement layer sets up in the surface of crank body, and the surface of enhancement layer is connected with the anticorrosive coating. This sprocket crank with prevent deformation structure can effectively improve the hardness of crank body through the enhancement layer after setting up to guarantee that the crank body is firm when using, can not receive external force to produce deformation, the setting of anticorrosive coating can avoid the corrosion of crank body surface because of rainwater or the stronger gas of corrosivity simultaneously, increases its life.

Description

Sprocket crank with prevent deformation structure

Technical Field

The utility model relates to a crank technical field specifically is a sprocket crank with prevent deformation structure.

Background

A crank is a bicycle component, and in a side link, a member that can rotate 360 degrees around its axis is called a crank. The bicycle middle shaft crank device is characterized by that between the fixed crank and pedal shaft of traditional bicycle a movable crank is added, between the movable crank and fixed crank sleeve hole a regulation fastener is used to make connection and fixation, and the fixed crank is connected with middle shaft with shaft neck action surface. The crank can drive the sprocket of bicycle and mutually support and move, lets the more high efficiency of traveling of bicycle.

The crank that has now sets up to hollow structure for the weight of reduction crank that can be further is many, so lead to current crank to appear extremely easily when using and warp to the influence is used, secondly is mostly the formula structure as an organic whole of making between crank and the sprocket, thereby is not convenient for change alone it, and the user demand who satisfies people that can not be fine carries out technical innovation on current crank basis to above-mentioned condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sprocket crank with prevent structure of deforming to it sets up to hollow structure for the articulate weight that can be further reduces in solving current crank among the above-mentioned background art more, so lead to current crank to appear deforming extremely easily when using, thereby the influence is used, secondly mostly is the formula structure as an organic whole of making between crank and the sprocket, thereby be not convenient for change alone it, the user demand problem of satisfying people that can not be fine.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a sprocket crank with prevent structure of deforming, includes sprocket and enhancement layer, the left and right sides of sprocket all is connected with the fixture block, and the external connection of fixture block has the draw-in groove, the other end of draw-in groove is connected with the protection wheel, and the other end of protection wheel is provided with the crank body, the right side of crank body is provided with the pentagonal screw, and the surface connection of pentagonal screw has the internal thread, the internal screw thread inside is provided with first through-hole, and the inside of first through-hole is provided with the second through-hole, the enhancement layer sets up in the surface of crank body, and the surface of enhancement layer is connected with the anticorrosive coating, the inside of protection wheel is provided with the hole, and the inside of hole is provided with the screw thread nail.

Preferably, be adhesive connection between crank body and the enhancement layer, and the material of enhancement layer sets up to the steel material to be adhesive connection between enhancement layer and the anticorrosive coating, the material of anticorrosive coating sets up to the epoxy material simultaneously.

Preferably, the structure of the chain wheel is a sawtooth structure, and the second through hole penetrates through the inside of the chain wheel.

Preferably, the chain wheel forms a clamping structure through the clamping block and the clamping groove and the protection wheel, the clamping block is matched with the clamping groove in shape structure, a semi-surrounding structure is formed between the clamping block and the clamping groove, and the protection wheel is provided with two parts.

Preferably, the protection wheel is in threaded connection with the chain wheel through the threaded nail, the holes penetrate through the inside of the protection wheel, and the protection wheel is symmetrically distributed around a vertical central axis of the chain wheel.

Preferably, the crank body is in threaded connection with the pentagonal screw through the internal thread, and the external dimension of the internal thread is matched with that of the pentagonal screw.

Preferably, the crank body is symmetrically distributed about a horizontal central axis of the pentagonal screw, and the crank body is structurally in a circular arc structure.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the hardness of the crank body can be effectively improved through the arranged reinforcing layer, so that the crank body is ensured to be firm when in use and not to be deformed by external force, and meanwhile, the corrosion of the surface of the crank body due to rainwater or gas with strong corrosivity can be avoided through the arrangement of the anticorrosive layer, so that the surface of the crank body is protected, and the service life of the crank body is prolonged; the structure through the sprocket after setting up sets up to the zigzag structure, so can be convenient for be connected with the chain to carry out mechanical transmission, so increase stress point, it is more smooth when making the meshing transmission

2. The chain wheel after being arranged can be clamped and connected with the protection wheels through the mutual matching of the clamping block and the clamping groove, and the two protection wheels are distributed outside the chain wheel, so that a protection effect can be achieved, and the chain derailment of the chain wheel during transmission is avoided; the protection wheel after being arranged can be connected with the chain wheel through the threaded nail, so that the stability of the protection wheel and the chain wheel in a connection state can be improved;

3. the crank body after being arranged can be in threaded connection with the pentagonal screw through the internal thread, so that the two crank bodies can fasten the chain wheel and the protection wheel, and the crank body can drive the chain wheel to rotate; the crank body after setting up sets up to convex structure, so can avoid taking place the friction between crank body and the protection wheel to guarantee to keep the certain distance between the two all the time.

Drawings

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

FIG. 2 is a schematic side view of the sprocket of the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic view of the external structure of the present invention;

FIG. 5 is a schematic view of the structure of the joint between the anticorrosion layer and the reinforcing layer of the present invention;

fig. 6 is a schematic view of a part of an enlarged structure at a in fig. 1 according to the present invention.

In the figure: 1. a sprocket; 2. a clamping block; 3. a card slot; 4. a guard wheel; 5. a first through hole; 6. a pentagonal screw; 7. an internal thread; 8. a crank body; 9. a second through hole; 10. a threaded nail; 11. a hole; 12. a reinforcing layer; 13. and (4) an anticorrosive layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a sprocket crank with prevent structure of deforming, including sprocket 1 and enhancement layer 12, the left and right sides of sprocket 1 all is connected with fixture block 2, and the external connection of fixture block 2 has draw-in groove 3, the other end of draw-in groove 3 is connected with protection wheel 4, and the other end of protection wheel 4 is provided with crank body 8, crank body 8's right side is provided with pentagonal screw 6, and pentagonal screw 6's surface is connected with internal thread 7, internal thread 7's inside is provided with first through-hole 5, and the inside of first through-hole 5 is provided with second through-hole 9, the enhancement layer 12 sets up in crank body 8's surface, and the surface of enhancement layer 12 is connected with anticorrosive coating 13, the inside of protection wheel 4 is provided with hole 11, and the inside in hole 11 is provided with screw 10.

The utility model discloses in: the crank body 8 and the reinforcing layer 12 are bonded, the reinforcing layer 12 is made of steel, the reinforcing layer 12 and the anticorrosive layer 13 are bonded, and the anticorrosive layer 13 is made of epoxy resin; the hardness of the crank body 8 can be effectively improved through the reinforcing layer 12 arranged behind the crank body, so that the crank body 8 is guaranteed to be firm when being used, deformation caused by external force is avoided, meanwhile, the corrosion of the surface of the crank body 8 due to rainwater or gas with strong corrosivity can be avoided by the arrangement of the anticorrosive layer 13, the surface of the crank body 8 is protected, and the service life of the crank body is prolonged.

The utility model discloses in: the structure of the chain wheel 1 is a sawtooth structure, and the second through hole 9 penetrates through the inside of the chain wheel 1; the structure through sprocket 1 after setting up sets up to the zigzag structure, so can be convenient for be connected with the chain to carry out mechanical transmission, so increase the stress point, it is more smooth when making the meshing transmission.

The utility model discloses in: the chain wheel 1 forms a clamping structure with the protection wheel 4 through the clamping block 2 and the clamping groove 3, the clamping block 2 is matched with the clamping groove 3 in shape structure, a semi-enclosed structure is formed between the clamping block 2 and the clamping groove 3, and meanwhile, two protection wheels 4 are arranged; through sprocket 1 after setting up can be through the mutually supporting of fixture block 2 and draw-in groove 3 down with protection wheel 4 carry out the block and be connected, two protection wheel 4 distribute in sprocket 1's outside, so can play the guard action, avoid sprocket 1 chain derail when the transmission.

The utility model discloses in: the protection wheel 4 is in threaded connection with the chain wheel 1 through a threaded nail 10, the holes 11 penetrate through the protection wheel 4, and the protection wheel 4 is symmetrically distributed around the vertical central axis of the chain wheel 1; the protection wheel 4 after being arranged can be connected with the chain wheel 1 through the screw nail 10, so that the stability of the connection state of the two can be improved.

The utility model discloses in: the crank body 8 is in threaded connection with the pentagonal screw 6 through the internal thread 7, and the external dimensions of the internal thread 7 and the pentagonal screw 6 are matched; through carrying out threaded connection between internal thread 7 and the pentagonal screw 6 through the crank body 8 after setting up, so two crank bodies 8 can fasten sprocket 1 and guard wheel 4 to can make crank body 8 drive sprocket 1 and rotate.

The utility model discloses in: the crank body 8 is symmetrically distributed around the horizontal central axis of the pentagonal screw 6, and the crank body 8 is of an arc-shaped structure; set up to convex structure through the crank body 8 after setting up, so can avoid taking place the friction between crank body 8 and the protection wheel 4 to guarantee to keep the certain distance between the two all the time.

This sprocket crank's theory of operation with prevent deformation structure: when in use, firstly the chain wheel 1 is taken up to clamp the clamping blocks 2 on the left side and the right side of the chain wheel with the clamping grooves 3, so that the protection wheel 4 can be clamped and connected with the chain wheel 1, the protection wheel 4 can protect the chain wheel 1, meanwhile, the chain which needs to be subsequently installed in a transmission way can be guided, derailment is avoided, and the practicability of the protection wheel 4 is improved, secondly, the chain wheel 1 and the protection wheel 4 are fastened by using the screw thread 10, so that the stability of the connection state of the chain wheel 1 and the protection wheel can be improved, then, the right crank body 8 is taken up to connect the pentagonal screw 6 with the crank body 8 through the internal thread 7, secondly, the chain wheel 1 and the protection wheel 4 are respectively placed outside the pentagonal screw 6 through the second through hole 9 and the first through hole 5, then, the left crank body 8 is taken up to apply rotating force to the crank body, so that the chain wheel 1 and the protection wheel 4 are fastened through the internal thread 7, so can be convenient for crank body 8 to drive sprocket 1 and rotate, the setting of hole 11 can alleviate 4 self weights of protection wheel, secondly the setting of enhancement layer 12 can improve crank body 8's hardness to guarantee crank body 8's rigidity, can not receive external force to produce deformation, the setting of anticorrosive coating 13 can avoid crank body 8 surface because of the corruption of rainwater or the stronger gas of corrosivity at last, thereby increase crank body 8 life.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sprocket crank with prevent structure of deformation, includes sprocket (1) and enhancement layer (12), its characterized in that: the utility model discloses a chain wheel, including sprocket (1), the left and right sides all is connected with fixture block (2), and the external connection of fixture block (2) has draw-in groove (3), the other end of draw-in groove (3) is connected with protection wheel (4), and the other end of protection wheel (4) is provided with crank body (8), the right side of crank body (8) is provided with pentagonal screw (6), and the surface connection of pentagonal screw (6) has internal thread (7), the inside of internal thread (7) is provided with first through-hole (5), and the inside of first through-hole (5) is provided with second through-hole (9), enhancement layer (12) set up in the surface of crank body (8), and the surface connection of enhancement layer (12) has anticorrosive coating (13), the inside of protection wheel (4) is provided with hole (11), and the inside of hole (11) is provided with screw (10).

2. A sprocket crank with an anti-deformation structure, as set forth in claim 1, wherein: be adhesive connection between crank body (8) and enhancement layer (12), and the material of enhancement layer (12) sets up to the steel material to be adhesive connection between enhancement layer (12) and anticorrosive coating (13), the material of anticorrosive coating (13) sets up to the epoxy material simultaneously.

3. A sprocket crank with an anti-deformation structure, as set forth in claim 1, wherein: the structure of the chain wheel (1) is a sawtooth structure, and the second through hole (9) penetrates through the inside of the chain wheel (1).

4. A sprocket crank with an anti-deformation structure, as set forth in claim 1, wherein: the chain wheel (1) is provided with two protection wheels (4) through a clamping structure formed between the clamping block (2) and the clamping groove (3) and a clamping structure formed between the clamping block (2) and the clamping groove (3), the clamping block (2) is matched with the clamping groove (3) in appearance structure, and a semi-enclosed structure is formed between the clamping block (2) and the clamping groove (3).

5. A sprocket crank with an anti-deformation structure, as set forth in claim 1, wherein: the protection wheel (4) is in threaded connection with the chain wheel (1) through the threaded nail (10), the holes (11) penetrate through the inside of the protection wheel (4), and the protection wheel (4) is symmetrically distributed about a vertical central axis of the chain wheel (1).

6. A sprocket crank with an anti-deformation structure, as set forth in claim 1, wherein: the crank body (8) is in threaded connection with the pentagonal screw (6) through the internal thread (7), and the external dimensions of the internal thread (7) and the pentagonal screw (6) are matched.

7. A sprocket crank with an anti-deformation structure, as set forth in claim 1, wherein: the crank body (8) is symmetrically distributed around the horizontal central line axis of the pentagonal screw (6), and the crank body (8) is structurally in an arc-shaped structure.