Mechanical shaft joint boot
AssigneeToyoda Gosei Co., Ltd.
InventorsMikio Ukai, Kenji Miyamoto
Life of this patent
Estimating the term…
Abstract
A mechanical shaft joint boot made of a resin comprises a bellows having four to seven crests between a large-diameter ring and a small-diameter ring, in which a crest excluding the first crest between the large-diameter ring and the center of the bellows has the maximum top curvature radius. By providing this structure, the thicknesses of these crests are made uniform and elongation-compression distortion is restrained from being concentrated at their tops. The widening of the tops of the crests also restrains any kinking phenomenon which may be produced. Therefore, the durability of the tops of these crests is increased and the durability of the boot as a whole is hence also increased.
Claims13
A mechanical shaft joint boot made of a resin formed by blow molding, which comprises:
- (a) a large-diameter ring;
- (b) a small-diameter ring;
- and
- (c) a bellows formed between said large-diameter ring and said said small-diameter ring,
- said bellows being connected to said small-diameter ring through said large-diameter ring, each crest i having a radius of curvature at the top R.sub.1 (i=1, 2, . . . n;
- 4.ltoreq.n.ltoreq.7) in order and said bellows having at least one crest k in said crests i which satisfy the factor given below:
- R.sub.1 >R.sub.k >R.sub.jmax
- wherein k satisfies 2.ltoreq.k.ltoreq.n+1/2 and R.sub.jimax is the maximum value of R.sub.j satisfying n+1/2<j.
Dependencies are inferred from the claim text.