CN2117501U

CN2117501U - Assembly for connecting chain pin with external part

Info

Publication number: CN2117501U
Application number: CN 92205574
Authority: CN
Inventors: 吴盈进
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-03
Filing date: 1992-04-03
Publication date: 1992-09-30

Abstract

The utility model relates to an assembly for connecting chain axis with external link, which mainly forms an embossed labial margin with stamping outwardly on the circumference of the through holes of the external link for chains. Two ends of the rod of the chain axis can be expanded toward the lateral side to extend and adhere on the labial margin of the external link and be further imposed by the press working after the chain axis is penetrated in the through holes, and the joint areas between the external link and the chain axis are increased, thereby, enhancing the jogged force between the external link and the chain axis.

Description

Assembly for connecting chain pin with external part

The utility model relates to a kind of outer chain sheet of chain and the assembly parts of chain rivet, and particularly a kind of outer chain sheet and the chimeric area of chain rivet and embedding of increasing held strength, and has the outer chain sheet of chain of better inlay resultant force and the assembly parts of chain rivet.

Chain configurations in the past as shown in Figure 1, mainly by chain rivet 11, chain roll 12, five kinds of parts such as inner chain sheet 13, outer chain sheet 14 and lining 15 combine, lining 15 is located in the perforation of two inner chain sheets 13, outside lining 15, wear chain and roll 12, be articulated with outer chain sheet 14 respectively 13 two of two inner chain sheets, outer chain sheet 14 constitutes chain via chain rivet 11 with inner chain sheet 13 and is connected the chain that one-tenth so just capable of being combined is used for the bicycle transmission; The utility model is that the composite structure at the outer chain sheet of chain and chain rivet is improved.

Please cooperate shown in Figure 2ly, be the outer chain sheet of chain in the past and the combination schematic representation of chain rivet; During chain rivet 11 combinations of chain in the past, pass 14 perforation 141 of two outer chain sheets, passing two ends, the end, top, back protrudes in respectively on the lamellar body of two outer chain sheets 14, carry out punching press in chain rivet 11 two ends peripheries again during combination, make chain rivet 11 two ends bars through expanding outwardly perforation 141 diameters a little above outer chain sheet 14; Above-mentioned chain in use, the sprocket of bicycle sprocket wheel can snap between two inner chain sheets 13 or two outer chain sheets 14, and when sprocket snaps between two outer chain sheets 14, be easy to deflect because of the transmission of chain, and outwards stir the plate body of two outer chain sheets 14, therefore, chain 1 was in conjunction with two outer chain sheets 14 time in the past, must again punch process be carried out at chain rivet 11 two ends, to increase the inlay resultant force between chain rivet 11 and the outer chain sheet 14.

See also Fig. 2, though the punching press that chain can chain rivet 11 two ends in the past breaks away to prevent outer chain sheet 14, but because chain rivet 11 two ends are outstanding limited, and outer chain sheet 14 outer side surfaces are smooth, shortage can make chain rivet 11 coat chimeric position, therefore, and when chain rivet 11 two ends bar radial perforation 141 peripheries spread, chimeric area limited, the inlay resultant force deficiency is so when chain 1 is stirred by the sprocket of sprocket wheel for a long time, just be easy to generate the phenomenon that outer chain sheet 14 comes off on chain.

Main purpose of the present utility model is at the outer chain sheet that the chain that a kind of chimeric area is big, inlay resultant force is good is provided and the assembly parts of chain rivet.

Major character of the present utility model is: the outside relief of two perforation of the outer chain sheet of chain periphery forms antelabium, the periphery of the outer chain sheet of chain perforation just is formed with the antelabium of relief from inside to outside, the antelabium periphery is formed with arc surface, also can be the rectangular shape of antelabium periphery.So when chain rivet two ends bar directly was subjected to punching press to be embedded at the perforation periphery of outer chain sheet, chimeric area was bigger, and can increase the inlay resultant force between chain rivet and the outer chain sheet effectively, and then the working life of improving chain.

Technological means for achieving the above object, after now enumerating preferred embodiment and conjunction with figs. and being described in detail in, wherein accompanying drawing is respectively:

Fig. 1 is the combination schematic representation of chain in the past;

Fig. 2 is the chain rivet of chain in the past and the combination schematic representation of outer chain sheet;

Fig. 3 is the utility model embodiment's an outer chain sheet sectional view;

Fig. 4 is that the utility model embodiment makes up schematic representation;

Fig. 5 is another embodiment's of the utility model an outer chain sheet sectional view;

Fig. 6 is that another embodiment of the utility model makes up schematic representation.

At first, see also Fig. 3, the outer chain sheet 2 that the utility model proposes have equally two directly to 21, two perforation of perforation, the 21 peripheries outstanding ring of punching press antelabium 22 from inside to outside, antelabium 22 peripheries form the arc surface 221 of relief.

Please cooperate Fig. 4, when outer chain sheet of the present utility model 2 and chain rivet 3 are combined, similarly, chain rivet 3 is passed two perforation 21 of outer chain sheet 2, carry out punching press at the two ends that chain rivet 3 passes again, at this moment, the bar footpath of chain rivet 3 just can inwardly coat along the arc surface 221 of outer chain sheet 2, because outer chain sheet 2 perforation 21 peripheries of the present utility model have outstanding antelabium 22, the surface area of 21 peripheries can increase so bore a hole, relative, also can be with the area at chain rivet 3 two ends along with increase, and can effectively increase inlay resultant force between outer chain sheet 2 and the chain rivet 3; When carrying out punching press, but whole chain rivet 3 peripheries of punching press antelabium 22 parts of outer chain sheet 2 are coated fully, also can only carry out punching press at the angle, two ends of chain rivet 3, have the good advantage of inlay resultant force equally.

By above explanation as can be known, the outer chain sheet that the utility model proposes and the assembly parts of chain rivet are perforation 21 peripheries at outer chain sheet 2, outwards antelabium 22 is given prominence in punching press, to increase the surface area of perforation 21 outboard peripheries, therefore, when chain rivet 3 two ends spread because of punching press, in conjunction with the time, in conjunction with area can increase many, and outstanding antelabium 22 also makes chain rivet 3 outer rims after the punching press have and more easily coats the position that embedding is held, so can increase the inlay resultant force between outer chain sheet 2 and the chain rivet 3; Certainly, the utility model also can be with the alteration of form of antelabium as shown in Figure 5.

Please consult Fig. 5 again, the utility model second embodiment's outer chain sheet 4 has two perforation 41 equally, and it is fixing to supply chain rivet to wear, and antelabium 42 is given prominence in punching press equally from inside to outside in two perforation 41, this antelabium 42 is because of the cause of punching press bed die shape, the rectangular shape of periphery.

Please cooperate Fig. 6, when the utility model second embodiment makes up, the perforation 41 that chain rivet 5 is passed outer chain sheet 4 is equally carried out punching press at outstanding two ends again, and is embedded antelabium 42 peripheries at outer chain sheet 4, because outer chain sheet 4 has

antelabium

42,41 outer peripheral surface are long-pending bigger so bore a hole, and have and more easily adhere to the position that embedding is held, therefore, have bigger bonded area equally between outer chain sheet 4 and the chain rivet 5, and can increase inlay resultant force between the two.

By above explanation as can be known, the outer chain sheet that the utility model proposes and the assembly parts of chain rivet are the outstanding antelabium of two perforation peripheries punching press at outer chain sheet, to increase the area of outer chain sheet perforation periphery, and be extruded with and be easy to effectively chimeric position, therefore, when the inside punching press of the chain rivet body of rod that passes, the increase that contact, chimeric area just can be relative, just therefore the inlay resultant force between outer chain sheet and the chain rivet also can strengthen; Therefore, when the sprocket that is subjected to sprocket wheel when outer chain sheet is stirred, has preferable combination force, and can reduce the situation that outer chain sheet breaks away from the chain rivet two ends, so, can effectively strengthen the inlay resultant force of chain rivet and outer chain sheet really, and then working life of improving chain through the antelabium design of outer chain sheet relief.

In sum, the utility model is through the design of the antelabium of relief, increasing chain rivet and chimeric area and the inlay resultant force of outer chain sheet, for the product of chain in the past, has the enhancement on the effect really.

Claims

1, the assembly parts of a kind of outer chain sheet of chain and chain rivet, the outer chain sheet of this assembly parts is provided with perforation, and chain rivet is located in the perforation of outer chain sheet; It is characterized in that: the outer chain sheet perforation periphery of chain is formed with the antelabium of relief from inside to outside.

2, according to the outer chain sheet of the described chain of claim 1 and the assembly parts of chain rivet; It is characterized in that: the antelabium periphery is formed with arc surface.

3, according to the outer chain sheet of the described chain of claim 1 and the assembly parts of chain rivet; It is characterized in that: the rectangular shape of antelabium periphery.