CN201010022Y

CN201010022Y - Improved fluted disc structure

Info

Publication number: CN201010022Y
Application number: CNU2006201753042U
Authority: CN
Inventors: 江承勋
Original assignee: TIANXIN INDUSTRY Co Ltd
Current assignee: TIANXIN INDUSTRY Co Ltd; Tien Hsin Industries Co Ltd
Priority date: 2006-12-21
Filing date: 2006-12-21
Publication date: 2008-01-23
Anticipated expiration: 2016-12-21

Abstract

An improved-type fluted disc structure comprises a main body. The mainbody is provided with a plurality of grooves on one end face; the grooves are not drilled through the fluted disc main body, and blocking parts are provided on the groove bottoms; the grooves can lower weight of the main body, and meanwhile, the blocking parts are structures to intensify the main body; wherein, the main body comprises a center hole to mount a crank for the bicycle; a plurality of fluted parts are formed on the edge of the mainbody, and the fluted parts can mesh with the bicycle chain. The main body in the utility model is characterized in the grooves substituting traditional through holes; when effected with external force, the fluted disc main body can mesh with the chain; since the grooves in the utility model do not go through the main body, the blocking parts on the groove bottom can maintain the strength of the fluted disc structure, so that no deformation is easy to happen but the fluted parts can actually mesh with the chain; during production, the grooves on the utility model can only be embedded on the main body, so as to fulfill the effect of lowering the weight of the main body. With the combination of the grooves with the blocking parts, double effects on lowering weight but maintaining original structure strength can be fulfilled on the main body.

Description

Improved fluted disc structure

Technical field

The utility model relates to a kind of fluted disc, relate in particular to a kind ofly to establish groove at fluted disc body one end face, and this bottom portion of groove is provided with stopper, and the setting of borrowing this groove and stopper is to increase the improved fluted disc structure of structural strength and expendable weight.

Background technology

The fluted disc of existing fluted disc structure is to be provided with a mesopore in the center, this mesopore places for central mandrel, make fluted disc can be hubbed on central mandrel, be provided with a perforation that can supply the crank group to establish at the fluted disc eccentric position, the user can borrow and tramples crank and drive fluted disc and rotate on central mandrel, fluted disc is expendable weight and saves cost now, and big city is provided with a plurality of air extractor vents at the first-class branch of fluted disc, as TaiWan, China patent application case number No. 089217915 patent case.

This existing its air extractor vent of fluted disc structure is to run through fluted disc, therefore make integral structure fragile relatively also, the fluted disc of hollow out orders about in external force and causes distortion down easily, especially racer, the rider is with sizable strength treadled cycle pedal, this strength is conveyed to fluted disc by crank, causes the huge burden of this type of hollow out fluted disc and therefore stress deformation.

The utility model content

Technical problem underlying to be solved in the utility model is, overcomes the above-mentioned defective that prior art exists, and a kind of improved fluted disc structure is provided, and makes body have the double effects that expendable weight keeps original structure intensity concurrently.

The technical scheme that its technical matters that solves the utility model adopts is:

A kind of improved fluted disc structure comprises body, it is characterized in that, an end face of this body is provided with several grooves, and this groove is not run through the fluted disc body, and this bottom portion of groove is provided with stopper; So that this groove alleviates the weight of body, and this stopper is to strengthen main body structure.

The fluted disc structure of aforementioned improved wherein is to be equipped with mesopore on the body, borrows this mesopore to establish for the crank group of bicycle.

The fluted disc structure of aforementioned improved, wherein the edge of body is formed with several tooth portions, borrows this tooth portion can supply the chain engages of bicycle.

Body of the present utility model is to replace traditional open-work with groove, order about when being subjected to external force, this fluted disc body is and chain engages, because groove of the present utility model does not run through body, the stopper of utilizing this bottom portion of groove is to keep the fluted disc structural strength, be difficult for producing distortion, make the certain and chain engages of tooth portion because of stressed; Moreover when manufacturing, groove of the present utility model only caves in and is arranged on the body, reaches the effect that alleviates this body weight, therefore from the above, borrows the combination of groove and stopper, makes body have expendable weight concurrently but the double effects of maintenance original structure intensity.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the stereoscopic scheme drawing of the improved fluted disc structure of the utility model.

Fig. 2 is the side schematic view of the improved fluted disc structure of the utility model.

Fig. 3 is the cutaway view of AB line segment shown in Figure 2.

Fig. 4 is the improved fluted disc structure of a utility model stack-mounted perspective diagram.

The number in the figure explanation:

1---body 2---tooth portion

Gu 3---groove 4---ear

5---mesopore 6---stopper

7---crank

The specific embodiment

The utility model relates to a kind of improved fluted disc structure, please refer to shown in Figure 1, its body 1 is the disk-like structure of an annular, this body 1 a wherein end face is a flat end face, the other end is provided with several grooves 3, and smooth end face is to install toward the outer side during assembling, and this groove 3 is not run through body 1 and only be arranged with a wherein end face in body 1, these groove 3 bottoms are provided with stopper 6, and this groove 3 is the convex structures along body 1 curved edge; This body 1 edge is several tooth portions 2 that convexes to form, and this tooth portion 2 is in order to mesh with the cycle chain (not shown); Again, the central hollow-out parts frame portion of this body 1 loop configuration is to be formed with four solid ears 4, and this solid ear 4 is the structures that claim toward each other, is equipped with mesopore 5 on this solid ear 4, and this mesopore 5 combines with bicycle crank 7 (as shown in Figure 4).

Please refer to Fig. 2 and shown in Figure 3, this groove 3 is end faces that are arranged with in body 1, and by the cutaway view of Fig. 3 as can be known, this groove 3 does not run through body 1, and only depression is located on the body 1, and these groove 3 bottoms are provided with stopper 6; So; The utility model is to replace traditional open-work (not shown) with groove 3 to alleviate fluted disc body 1 weight, and groove 3 bottoms are provided with stopper 6; Order about when being subjected to external force, this fluted disc body 1 and chain engages, because groove 3 of the present utility model does not run through body 1, utilization is located at the stopper 6 of groove 3 bottoms to keep fluted disc body 1 structural strength, like this, compare more firmly with existing design, be difficult for being out of shape, make this tooth portion 2 really and chain engages because of stressed; Moreover when manufacturing, groove 3 of the present utility model only caves in and is arranged on the body 1, therefore from the above, borrows the combination of groove 3 and stopper 6, makes body 1 have expendable weight concurrently but the double effects of maintenance original structure intensity.

Shown in the assembling scheme drawing of Fig. 4, use body 1 when assembling, the end face that this body 1 is provided with groove 3 is installed towards the inboard, and then install toward the outer side the other end; The solid ear 4 of this body 1 is provided with mesopore 5, the end face that this body 1 is not provided with groove 3 utilizes mesopore 5 to establish with crank 7 locks of bicycle and combines, this crank 7 is to link with the bicycle pedal (not shown), the pedal of user's treadled cycle rotates to order about crank 7, and this crank 7 is fixedly arranged on the fluted disc and drives fluted disc and rotate; Again, this mesopore 5 and crank 7 also can be in conjunction with the fluted discs of other different size, fluted disc that can this other size of hop jump when bicycle shift.

The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction; every foundation technical spirit of the present utility model is to any simple modification, equivalent variations and modification that above embodiment did; all still belong in the scope of technical solutions of the utility model; as the profile profile that changes this groove 3 all must be included in the category of the utility model intention protection to reach identical effect.

Claims

1. an improved fluted disc structure comprises body, it is characterized in that, an end face of this body is provided with several grooves, and this groove is not run through the fluted disc body, and this bottom portion of groove is provided with stopper.

2. according to the described improved fluted disc structure of claim 1, it is characterized in that on the described body it being to be equipped with mesopore, borrow this mesopore to establish for the crank group of bicycle.

3. according to the described improved fluted disc structure of claim 1, it is characterized in that the edge of described body is formed with several tooth portions, borrow this tooth portion can supply the chain engages of bicycle.