CN2171726Y

CN2171726Y - Chain with immersed chain pin

Info

Publication number: CN2171726Y
Application number: CN 93222515
Authority: CN
Inventors: 吴华田
Original assignee: Ta Ya Chain Co Ltd
Current assignee: Ta Ya Chain Co Ltd
Priority date: 1993-09-02
Filing date: 1993-09-02
Publication date: 1994-07-13
Anticipated expiration: 2003-09-02

Abstract

The utility model relates to a chain with immersed chain pins. The centers at the both ends of a chain pin present emargination shapes, and the pin hole of an outer chain slice is step-shaped. Through the match between the chain pin and the outer chain slice, after the both ends of the chain pin are forged, the end edges of the emargination of the chain pin are buried into the arc margin of the pin hole, and the chain pin is closely contacted with the outer chain slice, so that the chain has better binding force.

Description

Chain with immersed chain pin

The utility model relates to a kind of chain of tool sinking chain pin, the outer chain sheet stepped with being pin-and-hole with the recessed edge of chain pin end cooperates, make and add all impact forces and force the chain pin ora terminalis to be compeled out toward the arc edge place of pin-and-hole in chain pin, so more increase the combination force between chain pin and outer chain sheet, and provide a combination force better chain.

The effect of general chain mostly is reception and registration power greatly and designs, and for making chain when passing on power, brings into play its effect really, must make the combination force between each member of chain enough, otherwise when passing on power, if the combination force deficiency, just it is disconnected chain to be taken off, and increases the work of maintenance chain.

Referring to Fig. 4, conventional chains is made up of outer chain sheet 10, inner chain sheet 20, cylinder 30, axle sleeve 40 and chain pin 50, be earlier two inner chain sheets 20 to be combined into one assembly in the formation with cylinder 30, axle sleeve 40 during combination, and then chain pin 50 passed an outer chain sheet 10, the axle sleeve 40 of assembly in passing again, then another outer chain sheet 10 is placed on the chain pin 50, the mode of forging with two ends schedules chain pin 50 two ends rivetings outside the outer chain sheet 10 then again.

This kind combination, though can reach each member is connected the all-in-one-piece purpose, but the combination force of the chain of being formed is not enough, because of chain sheet 10 in forming process, shearing can be born in its pin-and-hole 101 upper ends, and make its hole is vertical kenel, yet the bottom is because of being to bear pulling force, so can make the bottom form the taper hole kenel, if the chain sheet material gradient of its taper hole more firmly heals greatly, therefore when chain pin 50 made up with outer chain sheet 10, outer chain sheet 10 contacted with the only above ora terminalis face of chain pin 50, make that the combination force of 10 of chain pin 50 and outer chain sheets is not enough, and make chain when passing on power, can be not enough because of combination force, and make outer chain sheet come off, it not only influences the reception and registration of power, and increases the work of maintenance chain.

Main purpose of the present utility model is: the chain that a kind of tool sinking chain pin is provided, recessed edge with chain pin two ends centre, the outer chain sheet stepped with pin-and-hole cooperates, when impact force is added on the chain pin two ends, because of not being tight with pin-and-hole as yet, the end of chain pin contacts, thus make the periphery of the recessed edge of chain pin spread because of impulse force, and be stuck in the arc edge place of shoulder hole, so make between chain pin and outer chain sheet to be and combine closely, make the combination force of chain integral body splendid with arc edge, ladder place.

The chain of the tool sinking chain pin that the utility model provides, this chain has inner chain sheet, cylinder, outer chain sheet and chain pin, side in the inner chain sheet pin-and-hole forms flange, flange can make inner chain sheet become the middle assembly of chain with cylinder group by this, it is characterized in that: the pin-and-hole in outer chain sheet forms shoulder hole, make pin-and-hole one side form flange, and opposite side forms the arc edge, be provided with recessed edge in the chain pin two end part in addition, two outer chain sheets can be placed the upper and lower end of assembly, and the mat chain pin passes, then only must impose impact force the recessed edge portion of chain pin, can make the periphery of chain pin end be close to the arc edge place of outer chain sheet, combine closely and make between chain pin and outer chain sheet.

Further specify structure characteristic of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is the exploded view of the utility model chain.

Fig. 2 is the sectional drawing of decomposition and combination between each member of the utility model chain.

The sectional drawing that Fig. 3 has made up for each member of the utility model chain.

Fig. 4 is each component composition of conventional chains but the chain pin fixed sectional drawing of riveting not as yet.

Referring to Fig. 1, the composition member of the utility model chain is made up of inner chain sheet 1, cylinder 20, outer chain sheet 3 and chain pin 4, wherein pin-and-hole 12 1 ends of inner chain sheet 1 are toward a side stretch flange formability 11, the diameter of this flange 11 is equivalent to the internal diameter of cylinder 2, but make two inner chain sheets 1 be connected assembly in the formation with cylinder 2 mat flanges 11, so the effect of this flange 11 is equivalent to the effect of conventional chains axle sleeve.

And the pin-and-hole 31 of outer chain sheet 3 is to form shoulder hole 32, makes the one side form flange 34, then forms arc edge 33 in pin-and-hole 31 places of other side, and chain pin 4 is to be straight-tube shape in addition, forms recessed edge 41 in its both ends of the surface centre.

Referring to Fig. 2, during combination, it is assembly in earlier two inner chain sheets 1 and cylinder 2 being formed, after then chain pin 4 being passed the pin-and-hole 31 of an outer chain sheet 3, pin-and-hole 12 in passing in assembly inner chain sheet 1 flange 11, then again another outer chain sheet 3 is placed on the assembly, recessed edge 41 places impose impact force in the two ends of chain pin 4 afterwards, therefore and chain pin 4 ends and outer chain sheet 3 arc edge 33 still have the gap, when so external force is added on chain pin 4 ends, the periphery of chain pin 4 ends is opened toward riveting all around, and be the kenel (as shown in Figure 3) that contacts with arc edge 33, and Tu Nei can find out thus, because of

chain pin

4 and 33 at outer chain sheet 3 arc edge still gapped, for shock absorbing power, and the riveting place of opening of chain pin 4 end peripheries is filled up in this gap location, so not only can not make chain pin 4 in the joining place generation distortion of outer chain sheet 3 with middle assembly, produce the phenomenon of reaming with the pin-and-hole that prevents

outer chain sheet

3, and 3 of chain pin 4 ends and outer chain sheets are very closely to be contacted, the combination force that makes 3 of chain pin 4 and outer chain sheets for well, provides a combination force good chain than conventional chains.

So as from the foregoing, the utility model is with the design of the recessed edge at chain pin two end part and outer chain sheet shoulder hole, arc edge, chain pin can be with outer chain sheet after riveting is fixed combines closely, and after the utility model chain pin and outer chain sheet combination, the end of chain pin is imbedded in the outer chain sheet fully, forms heavy formula chain pin, therefore when this chain is installed in multi-speed bicycle, but the design of the heavy formula chain pin of mat makes group chain device can stir chain easilier, and reduces noise.

Claims

1, a kind of chain of tool sinking chain pin, this chain has inner chain sheet, cylinder, outer chain sheet and chain pin, side in the inner chain sheet pin-and-hole forms flange, flange can make inner chain sheet become the middle assembly of chain with cylinder group by this, it is characterized in that: on the pin-and-hole of outer chain sheet, form shoulder hole, make pin-and-hole one side form flange, and opposite side forms the arc edge, be provided with recessed edge in the chain pin two end part in addition, two outer chain sheets can be placed the upper and lower end of assembly, and the mat chain pin passes, then only must impose impact force the recessed edge portion of chain pin, can make the periphery of chain pin end be close to the arc edge place of outer chain sheet, combine closely and make between chain pin and outer chain sheet.