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US 11,143,060 B2Granted
Rocker arm and method of manufacturing the same
AssigneeOtics Corporation
InventorsNaoyuki Yamane, Kiyoshi Masegi, Kimihiko Todo
Life of this patent
Estimating the term…
Abstract
A rocker arm includes a pair of sidewalls disposed along a heightwise direction so as to be opposed to each other. The sidewalls define a space to house a roller and have opposed portions extending in the heightwise direction relative to adjacent portions which are adjacent to the opposed portions. The opposed portions have thinner portions having smaller thicknesses than the adjacent portions.
Claims10
A rocker arm comprising:
- a pair of sidewalls formed by bending a plate material along a lengthwise direction so as to be opposed to each other, the sidewalls being disposed along a heightwise direction and having respective lengthwise middle portions serving as opposed portions defining a space to house a roller and shaped to protrude in the heightwise direction relative to respective both lengthwise ends of the sidewalls, the opposed portions having respective inner surfaces which are opposed to each other and respective outer surfaces which are located opposite to the inner surfaces and face outward;
- and
- a shaft member, wherein:
- the opposed portions have thinner portions having smaller thicknesses than the respective both lengthwise ends of the sidewalls;
- the opposed portions have respective shaft holes;
- the shaft member is held in the shaft holes to rotatably support the roller;
- and
- the thinner portions are formed as stepped in regions that are stepped in relative to outer surfaces of both lengthwise ends of the respective sidewalls, and wherein the stepped in regions are provided on an entirety of the outer surfaces of the opposed portions inclusive of circumferential edges of the shaft holes and over an entire height of the opposed portions.
5 more elements
A rocker arm comprising:
- a pair of sidewalls formed by bending a plate material along a lengthwise direction so as to be opposed to each other, the sidewalls being disposed along a heightwise direction and having respective lengthwise middle portions serving as opposed portions defining a space to house a roller and shaped to protrude in the heightwise direction relative to respective both lengthwise ends of the sidewalls;
- and
- a shaft member, wherein:
- the opposed portions have thinner portions having smaller thicknesses than the respective both lengthwise ends of the sidewall;
- the opposed portions have respective shaft holes;
- the shaft member is held in the shaft holes to rotatably support the roller;
- the thinner portions are formed on both heightwise ends of the opposed portions;
- the sidewalls have thicker portions which are thicker than the thinner portions in regions extending over the respective both lengthwise ends of the sidewalls and heightwise middle portions of the opposed portions;
- and
- the shaft holes are provided so as to penetrate the thicker portions.
7 more elements
A rocker arm comprising:
- a pair of sidewalls formed by bending a plate material along a lengthwise direction so as to be opposed to each other, the sidewalls being disposed along a heightwise direction and having respective lengthwise middle portions serving as opposed portions defining a space to house a roller and shaped to protrude in the heightwise direction relative to respective both lengthwise ends of the sidewalls;
- and
- a shaft member, wherein:
- the opposed portions have thinner portions having smaller thicknesses than the respective both lengthwise ends of the sidewalls;
- the opposed portions have respective outer surfaces provided with pressed recesses formed by pressing, the pressed recesses respectively having central bottoms through which shaft holes are bored;
- the shaft member is held in the shaft holes to rotatably support the roller;
- the thinner portions are respectively formed on circumferential edges of the shaft holes in the pressed recesses so as to be curved and spread radially outward of the shaft holes;
- and
- entire inner surfaces of the opposed portions are flat surfaces bordering the shaft holes and extending radially out both along the heightwise direction and the lengthwise direction of the sidewalls.
6 more elements
Dependencies are inferred from the claim text.