CN87209331U - Plastic chain guard - Google Patents

Abstract

Disclosed is a bicycle chain cover which is a semi-chain cover or a full chain cover formed with high-grade engineering plastic. The utility model has the advantages of shapely configuration, reasonable structure, light weight, convenient assemblage, avoidable rustiness, and elastic under the condition of enduring impact force and no sunken-in. The full chain guard has an upper casing and a lower casing, which are respectively closed with an upper panel strip and a lower panel strip. The chain guard overcomes the obsolete structure of the metal chain guard and the loss phenomenon of the dome cover, the tab and the purfling guard at the tail part. The plastic chain cover is filled with a certain amount of lubricating oil, and the service life of the block chain is thereby, prolonged.

Description

Plastic chain guard

Bicycle chain, adopting engineering plastics is that raw material is made.

Existing bicycle chain generally adopts metallic material to make, and structure is outmoded, rubbed or collide after peeling paint is got rusty, and under the effect of impulsive force, produce depressed deformation.Especially whole chain cover exists dome and inserted sheet and afterbody edge cover, and Chang Yi comes off and loses, and assembles very inconvenient again.

The utility model design-calculated bicycle chain, the employing senior engineering plastic is made, and is handsome in appearance, rational in infrastructure, easy to assembly, the selection of material is under high temperature or low-temperature condition, and molecular structure stabilized has good impact strength and pulling strengrth, compare with the metal chain guard, have in light weightly, non-corrosive has certain elasticity and does not cave under the condition of the power of withstanding shocks.

Bicycle chain described in the utility model can be made into half chain guard or whole chain cover, whole chain cover divides upper encloser and lower encioser, and the inner periphery of upper encloser studs with filler rod, and the inner periphery of lower encioser studs with down filler rod, like this chain is enclosed in the case, and very convenient by dress.At upper and lower case and the bicycle chain wheel axle place of matching by the annular arrangement dummy slider is arranged, this annular dummy slider partly is made up of large semicircle dummy slider and small semicircle dummy slider two, the annular dummy slider both played fixation to upper and lower case, had strengthened the effect of sealing property and beautiful decoration again.

Full chain cover for bicycle described in the utility model studs with upholstery border in the neighboring of upper encloser, plays a part attractive in appearance and reinforcement; Have oil extraction or drain gutter in the bottom of lower encioser, chock is arranged on the hole.

Upper encloser, the lower encioser of half chain guard described in the utility model or whole chain cover is that employing Polymer ABS plastic is that raw material is made, and this material is under high temperature or low-temperature condition, and molecular structure stabilized has impact strength and pulling strengrth preferably.

Bicycle chain form described in the utility model is attractive in appearance, non-corrosive, under the condition of the power of withstanding shocks, have certain elasticity and do not cave in, in light weight, only be that metallo-is about half, virgin metal chain cover structure is outmoded, dome and inserted sheet and afterbody edge cover, Chang Yi comes off and loses, and assemble also very inconvenient, plastics whole chain cover behind employing the design not only can overcome above-mentioned defective fully, and inject a certain amount of lubricating oil in the plastics whole chain cover after, also can prolong the service life of blockchain therefrom greatly.

Accompanying drawing is an embodiment of the present utility model.

Below in conjunction with accompanying drawing this embodiment is done detailed explanation.

Whole chain cover of the present utility model divides upper encloser (6) and lower encioser (10), inner periphery at upper encloser (6) and lower encioser (10) studs with filler rod (3) and following filler rod (9), last, lower encioser has large semicircle dummy slider (5) and small semicircle dummy slider (8) with the chain wheel axle place of matching, there is upholstery border (4) upper encloser (6) neighboring, circular hole and chock (7) that discharging oil or water are arranged on the lower encioser (10), two of upper encloser (6) and lower encioser (10) is fixing with clench nail (1), and upholstery border (4) is installed in the neighboring of upper encloser (6) with rivet (2).

Claims (5)

1, a kind of full chain cover for bicycle, be made of plastics, it is characterized in that whole chain cover divides upper encloser [6] and lower encioser [10], inner periphery at upper encloser [6] and lower encioser [10] studs with filler rod [3] and following filler rod [9], upper and lower case matches with the chain wheel axle has located annular dummy slider, upper encloser [6] is located circumferential edges upholstery border [4], and chock [7] is arranged on the lower encioser [10], and upper encloser [6] and lower encioser [10] are that senior engineering plastic is made.

2, whole chain cover as claimed in claim 1 is characterized in that annular dummy slider is large semicircle dummy slider (5) and small semicircle dummy slider (8).

3, whole chain cover as claimed in claim 1 is characterized in that the senior engineering plastic of upper encloser (6) and lower encioser (10) is an ABS plastic.

4, a kind of bicycle half chain guard is characterized in that half chain guard made by senior engineering plastic.

5, half chain guard as claimed in claim 4 is characterized in that senior engineering plastic is an ABS plastic.

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