CN220483499U

CN220483499U - Belt gear transmission assembly for children bicycle

Info

Publication number: CN220483499U
Application number: CN202321484362.3U
Authority: CN
Inventors: 陈宗韦
Original assignee: Kunshan Elmano Trading Co ltd
Current assignee: Kunshan Elmano Trading Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2024-02-13
Anticipated expiration: 2033-06-12

Abstract

The utility model discloses a belt gear transmission assembly for a children bicycle, which comprises a gear body and a connecting body, wherein the gear body comprises a wheel body and a fluted disc, the fluted disc is fixedly embedded in the wheel body, the fluted disc and the wheel body are concentrically arranged, the wheel body is arranged into a disc shape, a plurality of connecting tooth bodies are uniformly distributed on the outer circular surface of the wheel body, the wheel body is in transmission connection with a belt or a chain through the connecting tooth bodies, the center of the wheel body is provided with a connecting hole, the fluted disc is provided with a connecting sheet corresponding to the connecting hole, the center of the connecting sheet is provided with a clamping slot hole, the connecting body is fixedly connected in the clamping slot hole, and a crank is fixedly connected with the connecting body; according to the utility model, the fluted disc with the embedded structure is arranged to realize the connection and fixation of the crank and the belt gear, the fluted disc made of metal improves the connection strength with the crank, the embedded fixed connection structure ensures the stability of transmission between the crank connected with the fluted disc and the wheel body, and the eccentricity between the crank and the belt gear caused by unstable connection is avoided, so that the service life and the comfort level of the bicycle are improved.

Description

Belt gear transmission assembly for children bicycle

Technical Field

The utility model relates to the technical field of children bicycles, in particular to a belt gear transmission assembly for children bicycles.

Background

Children's bicycles are bicycles suitable for children of 4-8 years old to ride by means of a drive mechanism acting on the rear wheels. Various wheel diameters with or without balance wheels and various styles; children's bicycles cannot be used for road riding, and in the power device of children's bicycles, the power device is generally formed by a front belt transmission gear and a rear belt transmission gear through belt transmission.

The current children bicycle is for making things convenient for children to ride, most subassembly all adopts plastic materials, thereby reduce overall weight, still do benefit to riding and also avoid the extrusion damage to children when the automobile body emptys simultaneously, but on the selection of drive assembly, plastic construction can reduce driven joint strength by a wide margin, especially set up the connection structure of crank and the belt gear of running-board, under the circumstances of plastics wearing and tearing, the eccentric that causes the connected state between belt gear and the crank easily, even the prior art also has the gear structure of patent number CN202220651590.4, realize the transmission connection between belt pulley and the crank through setting up the aluminium dish, but aluminium dish and belt pulley still adopt the connected mode of bolt, under the circumstances such as belt pulley connecting hole wearing and tearing or aluminium dish are not hard up, easily cause the unstability of being connected between belt pulley and the aluminium dish, produce the eccentric between belt gear and the crank, reduce the life and the comfort level of bicycle.

In view of the above drawbacks, the present inventors have finally achieved the present utility model through long-time studies and practices.

Disclosure of Invention

In order to solve the technical defects, the technical scheme adopted by the utility model is that the belt gear transmission assembly for the children bicycle comprises a gear body and a connecting body, wherein the gear body comprises a wheel body and a fluted disc, the fluted disc is fixedly embedded in the wheel body, the fluted disc and the wheel body are concentrically arranged, the wheel body is arranged into a disc shape, a plurality of connecting tooth bodies are uniformly distributed on the outer circular surface of the wheel body, the wheel body is in transmission connection with a belt or a chain through the connecting tooth body, a connecting hole is formed in the center of the wheel body, a connecting piece is arranged corresponding to the connecting hole, the connecting piece is arranged into a ring shape, a clamping slot hole is formed in the center of the connecting piece, the connecting body is fixedly connected in the clamping slot hole, a crank is fixedly connected with the connecting body, the wheel body is made of plastic materials, and the fluted disc is made of metal materials.

Preferably, the wheel body comprises a central fixing disc and an outer ring connecting disc, the central fixing disc and the outer ring connecting disc are coaxially arranged, and the central fixing disc and the outer ring connecting disc are connected through a plurality of connecting columns, so that a plurality of weight reducing holes are formed in a circular space between the central fixing disc and the outer ring connecting disc; the connecting tooth body is arranged on the outer ring connecting disc, and the connecting hole is arranged on the center fixing disc.

Preferably, the outer ring connecting disc is in a cylindrical structure, the connecting tooth bodies are annularly and uniformly distributed on the outer circular surface of the outer ring connecting disc, and one end of the connecting column is fixedly connected with the inner circular surface of the outer ring connecting disc.

Preferably, a baffle is further fixedly arranged on the outer circular surface of the outer ring connecting disc, the baffle extends radially outwards from the end surface of the outer ring connecting disc to be arranged on two sides of the connecting tooth body, and the extending height of the baffle exceeds the height of the connecting tooth body.

Preferably, the baffle is set to circular arc, a plurality of baffles are arranged on two sides of the connecting gear body, and the baffles arranged on the same side of the connecting gear body are annularly and uniformly distributed by taking the axis of the gear body as a central line.

Preferably, the baffles at two sides of the connecting tooth body are arranged in a staggered manner.

Preferably, the fluted disc comprises a central connecting disc and a fixing claw, the clamping slot hole is arranged at the central position of the central connecting disc, the fixing claw is arranged to be a long strip extending outwards from the outer edge of the central connecting disc in a radial direction, the fixing claw is fixedly embedded in the connecting column, and the part of the central connecting disc arranged in the connecting hole forms the connecting sheet.

Preferably, the fixing claws and the connecting posts are arranged in one-to-one correspondence, and the fixing claws are at least provided with 5 fixing claws.

Preferably, the clamping slot hole is arranged as a circular through hole, a plurality of clamping grooves are uniformly distributed on the inner wall of the clamping slot hole in an annular mode, the extending direction of the clamping grooves is consistent with the axis of the clamping slot hole, the connecting body is provided with a clamping section, the clamping section is arranged to be matched with the size of the clamping slot hole in a cylindrical mode, clamping blocks are arranged on the outer circular surface of the clamping section, and the clamping blocks are arranged in a one-to-one mode and are arranged in a one-to-one mode.

Preferably, the connector comprises a first connecting part and a second connecting part, the first connecting part comprises a connecting section, a clamping section and a fixing section which are sequentially connected, the connecting section, the clamping section and the fixing section are all arranged into a cylinder, the cross section diameter of the connecting section is smaller than that of the clamping section, the cross section diameter of the clamping section is smaller than that of the fixing section, threads are arranged on the connecting section, the second connecting part is sleeved on the connecting section, the second connecting part is in threaded connection with the connecting section, and the second connecting part is arranged into a cylinder, and the cross section diameter of the clamping section is smaller than that of the second connecting part.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the fluted disc with the embedded structure is arranged, and the connection and the fixation between the fluted disc and the connecting body are realized, so that the connection and the fixation between the crank and the belt gear are realized, the connection strength between the fluted disc made of metal and the crank is improved, meanwhile, the embedded fixed connection structure ensures the stability of transmission between the crank connected with the fluted disc and the wheel body, and the eccentricity between the crank and the belt gear caused by unstable connection is avoided, so that the service life and the comfort level of the bicycle are improved.

Drawings

FIG. 1 is a front view of the gear body;

FIG. 2 is a top plan view of the gear body;

FIG. 3 is a structural view of the wheel body;

FIG. 4 is a structural view of the toothed disc;

FIG. 5 is a structural view of the connector;

fig. 6 is a structural view of the first connecting portion.

The figures represent the numbers:

1-wheel body; 2-fluted disc; 11-connecting the tooth body; 12-connecting holes; 13-a central fixed disk; 14-an outer ring connection pad; 15-connecting columns; 16-lightening holes; 17-baffle; 21-connecting pieces; 22-clamping slot holes; 23-a central connection pad; 24-fixed claws; 25-positioning holes; 31-a second connection; 32-connecting segments; 33-clamping sections; 34-a fixed section; 35-mounting posts; 36-positioning columns.

Detailed Description

The above and further technical features and advantages of the present utility model are described in more detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1 and 2, fig. 1 is a front view of the gear body; fig. 2 is a top view of the gear body.

The utility model discloses a belt gear transmission assembly for a children bicycle, which comprises a gear body and a connecting body, wherein the gear body comprises a wheel body 1 and a fluted disc 2, the fluted disc 2 is fixedly embedded in the wheel body 1, the fluted disc 2 and the wheel body 1 are concentrically arranged, the wheel body 1 is arranged into a disc shape, a plurality of connecting tooth bodies 11 are uniformly distributed on the outer circular surface of the wheel body 1, the wheel body 1 is in transmission connection with a belt or a chain through the connecting tooth bodies 11, a connecting hole 12 is formed in the center of the wheel body 1, a connecting piece 21 is arranged corresponding to the connecting hole 12, the connecting piece 21 is arranged into a circular ring shape, a clamping slot 22 is formed in the center of the connecting piece 21, the connecting body is fixedly connected in the clamping slot 22, a crank is fixedly connected with the connecting body, the wheel body 1 is made of plastic materials, and the fluted disc 2 is made of metal materials, so that the crank and the belt gear in the children bicycle is stably connected.

Generally, the wheel body 1 and the fluted disc 2 are molded by injection molding in an embedded manner, so that the connection strength between the wheel body 1 and the fluted disc 2 and the accuracy of the relative position between the wheel body 1 and the fluted disc 2 can be effectively ensured.

According to the utility model, the fluted disc 2 with an embedded structure is arranged, and the fluted disc 2 and the connecting body are clamped and fixed, so that the connection and fixation of the crank and the belt gear are realized, the fluted disc 2 made of metal improves the connection strength with the crank, and meanwhile, the embedded fixed connection structure ensures the stability of transmission between the crank connected with the fluted disc 2 and the wheel body 1, avoids the eccentricity between the crank and the belt gear caused by unstable connection, and further improves the service life and comfort of the bicycle.

Example two

As shown in fig. 3, fig. 3 is a structural view of the wheel body; the wheel body 1 comprises a central fixing disc 13 and an outer ring connecting disc 14, the central fixing disc 13 and the outer ring connecting disc 14 are coaxially arranged, and the central fixing disc 13 and the outer ring connecting disc 14 are connected through a plurality of connecting posts 15, so that a plurality of weight reducing holes 16 are formed in a circular space between the central fixing disc 13 and the outer ring connecting disc 14, and the weight of the wheel body 1 is further reduced. The connecting tooth body 11 is arranged on the outer ring connecting disc 14, and the connecting hole 12 is arranged on the center fixing disc 13.

The outer ring connecting disc 14 is in a cylindrical structure, the connecting tooth bodies 11 are annularly and uniformly distributed on the outer circular surface of the outer ring connecting disc 14, and one end of the connecting column 15 is fixedly connected with the inner circular surface of the outer ring connecting disc 14.

Preferably, the outer circumferential surface of the outer ring connecting disc 14 is further fixedly provided with a baffle 17, the baffle 17 radially extends from the end surface of the outer ring connecting disc 14 to be arranged at two sides of the connecting tooth body 11, and the extending height of the baffle 17 exceeds the height of the connecting tooth body 11, so that two limit positions are formed on the wheel body 1, and the belt or the chain is ensured to be limited between the two baffles 17 when being connected with the wheel body 1, so that the meshing connection of the connecting tooth body 11 and the belt or the chain is ensured.

The baffle 17 sets up to the circular arc, the both sides of connecting the tooth body 11 all are provided with a plurality of baffle 17, and set up connect the tooth body 11 with the axis of wheel body 1 is the annular equipartition of central line, multistage setting baffle 17 can form many breach on the outer disc of wheel body 1 when the outer disc concave part of wheel body 1 has filth such as water, silt, through the rotation of wheel body 1 makes the filth more easily follow breach discharge, reduces to connect tooth body 11 and belt or chain meshing transmission's influence, also avoid the filth to the soaking damage of part simultaneously.

Preferably, the baffles 17 on two sides of the connecting tooth body 11 are staggered, so that the baffles 17 on two sides of the same connecting tooth body 11 are avoided, and the residues of dirt at the concave positions of the outer circular surface of the wheel body 1 can be more effectively avoided.

Example III

FIG. 4 is a view showing the structure of the toothed disc as shown in FIG. 4; the fluted disc 2 comprises a central connecting disc 23 and a fixed claw 24, the clamping slot 22 is arranged at the central position of the central connecting disc 23, the fixed claw 24 is arranged as an elongated member extending radially outwards from the outer edge of the central connecting disc 23, the fixed claw 24 is fixedly embedded in the connecting column 15, the outer ring part of the central connecting disc 23 is fixedly embedded in the central fixed disc 13, and the part of the central connecting disc 23 arranged in the connecting hole 12 forms the connecting sheet 21.

Preferably, the fixing claws 24 are disposed in one-to-one correspondence with the connecting posts 15, and at least 5 fixing claws 24 are disposed, so as to enhance the connection strength between the toothed disc 2 and the wheel body 1.

Example IV

As shown in fig. 5 and 6, fig. 5 is a structural view of the connector; fig. 6 is a structural view of the first connecting portion. The clamping groove hole 22 is formed into a circular through hole, a plurality of clamping grooves are uniformly distributed on the inner wall of the clamping groove hole 22 in an annular mode, the extending direction of each clamping groove is consistent with that of the corresponding clamping groove hole 22, a clamping section is arranged on the connecting body, the clamping section is arranged to be cylindrical with the clamping groove hole 22 in a size matching mode, clamping blocks are arranged on the outer circular surface of the clamping section and are in one-to-one correspondence with the clamping grooves, and the clamping blocks are arranged in the clamping grooves in one-to-one correspondence mode, so that the connecting body is connected with the gear body 1 in a transmission mode.

Preferably, the connector comprises a first connecting portion and a second connecting portion 31, the first connecting portion comprises a connecting section 32, a clamping section 33 and a fixing section 34 which are sequentially connected, the connecting section 32, the clamping section 33 and the fixing section 34 are all arranged to be cylindrical, and the cross section diameter of the connecting section 32 is smaller than that of the clamping section 33, so that the connecting section 32 can conveniently pass through the clamping slot hole 22 to realize the clamping fixation of the clamping section 33 and the clamping slot hole 22, and the cross section diameter of the clamping section 33 is smaller than that of the fixing section 34 to realize the axial limiting of the fixing section 34 to the clamping section 33.

Generally, the connecting section 32 is provided with a thread, the second connecting portion 31 is sleeved on the connecting section 32, and the second connecting portion 31 is in threaded connection with the connecting section 32, so that the first connecting portion and the second connecting portion 31 are fixedly connected, preferably, the second connecting portion 31 is provided with a cylindrical shape, and the cross-sectional diameter of the clamping section 33 is smaller than that of the second connecting portion 31, so that the axial limit of the second connecting portion 31 and the fixing section 34 to the clamping section 33 is realized.

Preferably, the two ends of the first connecting portion are respectively provided with a mounting post 35, and the crank can be fixedly arranged on the two mounting posts 35, so that the crank and the connecting body are fixedly connected.

Preferably, the connecting piece 21 is further provided with at least two positioning holes 25, and correspondingly, the end portion of the fixing section 34, which is close to the clamping section 33, is provided with a positioning column 36, and the positioning column 36 is correspondingly disposed in the positioning hole 25, so as to improve the connection strength of the connecting body and the fluted disc 2, and simultaneously reduce the wear degree between the clamping slot 22 and the clamping section 33 in the use process.

Generally, the length of the positioning post 36 is slightly greater than that of the clamping section 33, so that the second connecting portion 31 abuts against and is limited by the end portion of the positioning post 36 during connection, thereby reducing direct friction between the fixing section 34 and the second connecting portion 31 and the connecting piece 21, and forming a certain space between the fixing section 34 and the second connecting portion 31 and the connecting piece 21, so as to facilitate application of lubricating liquid such as lubricating oil, thereby prolonging the service life of the bicycle.

The foregoing description of the preferred embodiment of the utility model is merely illustrative of the utility model and is not intended to be limiting. It will be appreciated by persons skilled in the art that many variations, modifications, and even equivalents may be made thereto without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The utility model provides a belt gear drive subassembly for children's bicycle, its characterized in that, includes the gear body and the connector, the gear body includes wheel body and fluted disc, the fluted disc is fixed to be embedded in the wheel body, just the fluted disc with the wheel body sets up with one heart, the wheel body sets up to the disc type, the equipartition has a plurality of connection tooth bodies on the wheel body outer disc, the wheel body passes through connect the tooth body and belt or chain transmission are connected, the wheel body center is provided with the connecting hole, the fluted disc corresponds the connecting hole is provided with the connection piece, the connection piece sets up to the ring type, just the connection piece center is provided with the joint slotted hole, connector fixed connection be in the joint slotted hole, the crank with connector fixed connection, the wheel body adopts the plastics material preparation, the fluted disc adopts metal material preparation.

2. The belt and gear assembly for a children's bicycle according to claim 1, wherein the wheel body includes a central fixing plate and an outer ring connecting plate, the central fixing plate and the outer ring connecting plate are coaxially disposed, and the central fixing plate and the outer ring connecting plate are connected by a plurality of connecting posts, thereby forming a plurality of weight-reducing holes in an annular space between the central fixing plate and the outer ring connecting plate; the connecting tooth body is arranged on the outer ring connecting disc, and the connecting hole is arranged on the center fixing disc.

3. The belt and gear transmission assembly for a children's bicycle according to claim 2, wherein the outer ring connecting disc is provided with a cylindrical structure, the connection teeth are annularly and uniformly distributed on the outer circular surface of the outer ring connecting disc, and one end of the connection post is fixedly connected with the inner circular surface of the outer ring connecting disc.

4. The belt and gear transmission assembly for a children's bicycle according to claim 3, wherein a baffle plate is fixedly provided on an outer circumferential surface of the outer ring connection disc, the baffle plate extends radially outwardly from an end surface of the outer ring connection disc to be provided at both sides of the connection tooth body, and an extending height of the baffle plate exceeds a height of the connection tooth body.

5. The belt and gear transmission assembly for a bicycle for children according to claim 4, wherein the baffle plates are arranged in an arc shape, a plurality of baffle plates are arranged on two sides of the connecting tooth body, and the baffle plates arranged on the same side of the connecting tooth body are uniformly distributed in an annular shape by taking the axis of the wheel body as a central line.

6. The belt and gear assembly for a children's bicycle according to claim 5, wherein the baffles on both sides of the connecting teeth are staggered.

7. The belt and gear assembly for a children's bicycle according to claim 2, wherein the toothed disc includes a central land and a fixing claw, the clamping slot is provided at a central position of the central land, the fixing claw is provided as an elongated member extending radially outwardly from an outer edge of the central land, the fixing claw is fixedly embedded in the connection post, and a portion of the central land provided in the connection hole forms the connection piece.

8. The belt and gear assembly for a children's bicycle according to claim 7, wherein the fixing claws are provided in one-to-one correspondence with the connecting posts, and the fixing claws are provided with at least 5.

9. The belt gear transmission assembly for the children bicycle according to claim 1, wherein the clamping groove holes are formed into circular through holes, a plurality of clamping grooves are uniformly distributed on the inner wall of the clamping groove holes in an annular mode, the extending directions of the clamping grooves are consistent with the axis of the clamping groove holes, clamping sections are arranged on the connecting body and are cylindrical and matched with the clamping groove holes in size, clamping blocks are arranged on the outer circular surfaces of the clamping sections, and the clamping blocks are arranged in one-to-one correspondence with the clamping grooves.

10. The belt and gear transmission assembly for a bicycle for children according to claim 9, wherein the connecting body comprises a first connecting portion and a second connecting portion, the first connecting portion comprises a connecting section, a clamping section and a fixing section which are sequentially connected, the connecting section, the clamping section and the fixing section are all cylindrical, the cross-sectional diameter of the connecting section is smaller than that of the clamping section, the cross-sectional diameter of the clamping section is smaller than that of the fixing section, threads are arranged on the connecting section, the second connecting portion is sleeved on the connecting section, the second connecting portion is in threaded connection with the connecting section, the second connecting portion is cylindrical, and the cross-sectional diameter of the clamping section is smaller than that of the second connecting portion.