Joint structure for oil pump shaft and balancer shaft
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsYusuke Endo, Hirotsugu Kudo, Kenji Fujiki
Life of this patent
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Abstract
A joint portion 33 of an oil pump shaft 19 and a balancer shaft (output-side balancer shaft 12) is provided in an open space between opposite surfaces of a sidewall 4b of an oil pump housing 4 and a sidewall 5c1-5c2 (a bearing portion) of a balancer shaft housing 5. The joint portion 33 of the oil pump shaft 19 and the balancer shaft 12 is comprised of a pair of engageable portions 33a, 33b provided at each end of the balancer shaft 12 and the oil pump shaft 19, respectively. The engageable portions 33a, 33b are disengageably engaged with each other in radial directions of the shafts 12, 19. The joint portion 33 can be seen from the outside, and thus a joining operation can be performed with ease.
Claims7
A joint structure for an oil pump shaft and a balancer shaft in which the balancer shaft is coaxially joined to an end portion of the oil pump shaft, the joint structure comprising:
- an oil pump housing from which the end portion of the oil pump shaft protrudes;
- a bearing portion in which the balancer shaft is supported;
- and
- a housing joint portion that joins the oil pump housing and the bearing portion with a predetermined spacing allowed therebetween,
- wherein the housing joint portion is provided below a shaft joint portion where the oil pump shaft and the balancer shaft join together;
- and
- wherein the predetermined spacing is set so that the shaft joint portion is disposed between opposite surfaces of the oil pump housing and the bearing portion.
Dependencies are inferred from the claim text.