CN219790437U

CN219790437U - Sprocket fluted disc structure for bicycle

Info

Publication number: CN219790437U
Application number: CN202320918271.XU
Authority: CN
Inventors: 葛志峰; 谭力; 胡生海
Original assignee: Jurong Taijia Bicycle Accessories Co ltd
Current assignee: Jurong Taijia Bicycle Accessories Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-10-03
Anticipated expiration: 2033-04-21

Abstract

The utility model relates to the technical field of sprocket fluted discs and discloses a sprocket fluted disc structure for a bicycle, which solves the problem that the installation of a current spline is not firm and the subsequent kinetic energy transmission is easy to influence, and comprises a sprocket main body, wherein through holes are arranged on the sprocket main body at equal angles, sprocket teeth are arranged on the outer side of the sprocket main body at equal angles, a middle hole is arranged in the middle part of the sprocket main body, a fixing mechanism is arranged on the sprocket main body and comprises a sleeve fixed on the sprocket main body, the sleeve is communicated with the middle hole, a mounting ring is arranged on one side of the sleeve, far from the sprocket main body, an inner barrel is fixedly arranged on one side, close to the sleeve, of the mounting ring, the inner barrel is positioned in the sleeve, the outer diameter value of the inner barrel and the inner diameter value of the sleeve are provided with splines at equal angles; according to the utility model, the mounting ring is conveniently placed on the sleeve through the matching between the T-shaped groove and the T-shaped block, so that the inner cylinder and the spline can be positioned in the sleeve, and the spline is conveniently mounted on the chain wheel main body.

Description

Sprocket fluted disc structure for bicycle

Technical Field

The utility model belongs to the technical field of sprocket fluted discs, and particularly relates to a bicycle sprocket fluted disc structure.

Background

The chain wheel is mainly a wheel with cog type sprocket teeth and is used for being meshed with blocks with accurate pitches on chain links or cables to transmit motion, and the chain wheel for the bicycle is mainly a structure which is meshed with a chain to transmit running power; according to the authorized bulletin number: CN217348118U, entitled "a sprocket for a low-cost electric bicycle", is disclosed, in which first, a riveting groove on an insert is aligned with a riveting tooth on a mounting hole on a sprocket main body, then the insert is mounted in the mounting hole, and the riveting groove is matched with the riveting tooth, so that the insert can be stably mounted on the sprocket main body, and the insert is pushed until the surface of a limiting ring and the side surface of the sprocket main body are mutually attached, so as to complete assembly; the following drawbacks still remain:

only the rivet grooves and the rivet teeth cooperate to realize the installation of the spline, and the mode easily causes the insert to slide relative to the chain wheel main body, so that the subsequent kinetic energy transmission is easily influenced.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides a chain wheel fluted disc structure for a bicycle, which effectively solves the problem that the installation of the prior spline is not firm and the subsequent kinetic energy transmission is easy to influence.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the chain wheel fluted disc structure for the bicycle comprises a chain wheel main body, wherein through holes are formed in the chain wheel main body at equal angles, chain wheel teeth are formed in the outer side of the chain wheel main body at equal angles, a middle hole is formed in the middle of the chain wheel main body, and a fixing mechanism is arranged on the chain wheel main body;

the fixed establishment is including being fixed in the sleeve in the sprocket main part, sleeve and mesopore intercommunication, and one side that the sprocket main part was kept away from to the sleeve is equipped with the collar, and one side that the collar is close to the sleeve fixed mounting has the inner tube, and the inner tube is located telescopic inside, and the external diameter value of inner tube and telescopic internal diameter value, and the inner wall equiangular degree of inner tube is equipped with the spline.

Preferably, the sleeve is symmetrically provided with two T-shaped grooves, the two T-shaped grooves are communicated with the inside of the sleeve, two T-shaped blocks are symmetrically and fixedly arranged on one side of the mounting ring, which is close to the sleeve, and the two T-shaped blocks are fixed on the outer side of the inner cylinder, are respectively positioned in the two T-shaped grooves, and are matched with the two T-shaped grooves.

Preferably, two clamping grooves are symmetrically formed in the outer side of the sleeve, two clamping blocks are symmetrically and fixedly mounted on one side, close to the sleeve, of the mounting ring, the two clamping blocks are fixed to the outer side of the inner cylinder, the two clamping blocks are located in the two clamping grooves respectively, and the two clamping blocks are matched with the clamping grooves.

Preferably, the outside fixed mounting of telescopic has the outer loop, outer loop and sprocket main part fixed connection, and the equal fixed mounting in one side that two fixture blocks kept away from each other has the side piece, and two side pieces all laminate with the outer loop.

Preferably, the outer ring is far away from one side of the sprocket main body and is symmetrically and fixedly provided with two screws, the two side blocks are respectively movably sleeved on the two screws, nuts are arranged on one side, far away from the outer ring, of the two side blocks, and the two nuts are respectively in threaded sleeve joint with the two screws.

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

(1) According to the utility model, the mounting ring is conveniently placed on the sleeve through the matching between the T-shaped groove and the T-shaped block, so that the inner cylinder and the spline can be positioned in the sleeve, and the spline is conveniently mounted on the chain wheel main body;

(2) This novel cooperation between draw-in groove and the fixture block is convenient for the collar and is placed on the sleeve to through the cooperation between outer loop and side piece and screw rod and the nut, the collar of being convenient for is fixed with the sleeve, thereby the firm installation of spline of being convenient for.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.

In the drawings:

FIG. 1 is a schematic view of a bicycle sprocket tooth plate;

FIG. 2 is a schematic view of a fixing mechanism according to the present utility model;

FIG. 3 is a schematic view of an exploded view of the sleeve and collar of the present utility model;

in the figure: 1. a sprocket body; 2. a fixing mechanism; 201. a sleeve; 202. an outer ring; 203. a mounting ring; 204. a spline; 205. an inner cylinder; 206. a clamping block; 207. a nut; 208. a side block; 209. a T-shaped groove; 2010. a screw; 2011. a clamping groove; 2012. a T-shaped block; 3. a middle hole; 4. sprocket teeth; 5. and a through hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the first embodiment, as shown in fig. 1, the utility model comprises a sprocket main body 1, through holes 5 are arranged on the sprocket main body 1 at equal angles, sprocket teeth 4 are arranged on the outer side of the sprocket main body 1 at equal angles, a middle hole 3 is arranged in the middle of the sprocket main body 1, and a fixing mechanism 2 is arranged on the sprocket main body 1.

Specifically, as shown in fig. 2-3, the fixing mechanism 2 includes a sleeve 201 fixed on the sprocket body 1, the sleeve 201 is communicated with the middle hole 3, a mounting ring 203 is arranged on one side of the sleeve 201 away from the sprocket body 1, an inner cylinder 205 is fixedly arranged on one side of the mounting ring 203, which is close to the sleeve 201, the inner cylinder 205 is positioned in the sleeve 201, the outer diameter value of the inner cylinder 205 and the inner diameter value of the sleeve 201 are equal-angle, a spline 204 is arranged on the inner wall of the inner cylinder 205, two T-shaped grooves 209 are symmetrically arranged on the sleeve 201, the two T-shaped grooves 209 are communicated with the inner part of the sleeve 201, two T-shaped blocks 2012 are symmetrically and fixedly arranged on one side of the mounting ring 203, which is close to the sleeve 201, and the two T-shaped blocks 2012 are fixed on the outer side of the inner cylinder 205, the two T-shaped blocks 2012 are respectively positioned in the two T-shaped grooves 209, and the two T-shaped blocks 2012 are matched with the two T-shaped grooves 209;

in the use state, firstly, two T-shaped blocks 2012 are respectively placed in two T-shaped grooves 209 until the mounting ring 203 is attached to the sleeve 201, at this time, the inner cylinder 205 is positioned inside the sleeve 201, the outer wall of the inner cylinder 205 is attached to the inner wall of the sleeve 201, meanwhile, the spline 204 is positioned inside the sleeve 201, and finally, the spline 204 is mounted on the sprocket main body 1.

Specifically, as shown in fig. 2-3, two clamping grooves 2011 are symmetrically arranged on the outer side of the sleeve 201, two clamping blocks 206 are symmetrically and fixedly arranged on one side, close to the sleeve 201, of the mounting ring 203, the two clamping blocks 206 are fixed on the outer side of the inner cylinder 205, the two clamping blocks 206 are respectively positioned in the two clamping grooves 2011, the two clamping blocks 206 are matched with the clamping grooves 2011, an outer ring 202 is fixedly arranged on the outer side of the sleeve 201, the outer ring 202 is fixedly connected with the sprocket main body 1, side blocks 208 are fixedly arranged on one side, far away from each other, of the two clamping blocks 206, the two side blocks 208 are respectively and fixedly arranged on the two screw rods 2010, the two screw rods 2010 are respectively sleeved on one side, far from the outer ring 202, of the two side blocks 208 is respectively provided with nuts 207, and the two nuts 207 are respectively and in threaded sleeve joint with the two screw rods 2010;

in the use state, when the spline 204 is located in the sleeve 201, the two clamping blocks 206 are located in the two clamping grooves 2011 respectively, meanwhile, the two side blocks 208 are attached to the outer ring 202, the two side blocks 208 are sleeved on the two screws 2010 respectively, then the two nuts 207 are sleeved on the two screws 2010 respectively and rotate until the two side blocks 208 are fixed on the outer ring 202, and finally the spline 204 is firmly installed.

Claims

1. The utility model provides a bicycle sprocket fluted disc structure, includes sprocket main part (1), its characterized in that: through holes (5) are formed in the upper side of the chain wheel main body (1) at equal angles, the outer side of the chain wheel main body (1) is provided with chain wheel teeth (4) at equal angles, a middle hole (3) is formed in the middle of the chain wheel main body (1), and a fixing mechanism (2) is arranged on the chain wheel main body (1);

the fixed establishment (2) is including being fixed in sleeve (201) on sprocket main part (1), sleeve (201) and mesopore (3) intercommunication, and one side that sprocket main part (1) was kept away from to sleeve (201) is equipped with collar (203), and one side fixed mounting that collar (203) is close to sleeve (201) has inner tube (205), and inner tube (205) are located the inside of sleeve (201), and the external diameter value of inner tube (205) and the internal diameter value of sleeve (201), and the inner wall equiangle of inner tube (205) is equipped with spline (204).

2. The sprocket tooth structure for a bicycle as set forth in claim 1, wherein: the sleeve (201) is symmetrically provided with two T-shaped grooves (209), the two T-shaped grooves (209) are communicated with the inside of the sleeve (201), one side of the mounting ring (203) close to the sleeve (201) is symmetrically and fixedly provided with two T-shaped blocks (2012), the two T-shaped blocks (2012) are fixed on the outer side of the inner cylinder (205), the two T-shaped blocks (2012) are respectively located inside the two T-shaped grooves (209), and the two T-shaped blocks (2012) are matched with the two T-shaped grooves (209).

3. The sprocket tooth structure for a bicycle as set forth in claim 1, wherein: two clamping grooves (2011) are symmetrically formed in the outer side of the sleeve (201), two clamping blocks (206) are symmetrically and fixedly mounted on one side, close to the sleeve (201), of the mounting ring (203), the two clamping blocks (206) are fixed to the outer side of the inner cylinder (205), the two clamping blocks (206) are located in the two clamping grooves (2011) respectively, and the two clamping blocks (206) are matched with the clamping grooves (2011).

4. A sprocket tooth structure for a bicycle as set forth in claim 3, wherein: the outer side of sleeve (201) fixed mounting has outer loop (202), and outer loop (202) and sprocket main part (1) fixed connection, and the side that two fixture blocks (206) kept away from each other is all fixed mounting has side piece (208), and two side piece (208) are all laminated with outer loop (202).

5. The sprocket tooth structure for a bicycle as set forth in claim 4, wherein: two screws (2010) are symmetrically and fixedly arranged on one side, far away from the sprocket main body (1), of the outer ring (202), two side blocks (208) are respectively and movably sleeved on the two screws (2010), nuts (207) are respectively arranged on one side, far away from the outer ring (202), of the two side blocks (208), and the two nuts (207) are respectively and spirally sleeved with the two screws (2010).