160results about How to "Securing rigidity" patented technology

The present invention provides a structure of a rotor for a generator in which a rotor capable of being ground very easily with a high accuracy is incorporated. This structure of a rotor comprises a rotor mounted fixedly on a rotary shaft supported rotatably on housings. The rotor comprises cylindrically arranged members in which segmental members of permanent magnets are assembled together cylindrically, and an outer cylinder provided on an outer circumference of the cylindrically arranged members and comprising windings or woven cloths of fibers. A resin material capable of being ground is packed in clearances between the cylindrically arranged members and outer cylinder and in the clearances in the outer cylinder.

An electric two-wheel vehicle includes a battery case that accommodates two batteries. The battery case is open in an upward direction. A head pipe supports a steering shaft and is connected to a front portion of the battery case. The battery case includes a beam portion that is disposed between the two batteries and extends rearward from a front wall portion of the battery case. Accordingly, it is possible to easily attach and detach the batteries with respect to a vehicle body for charging, protect the batteries, and secure the rigidity of a vehicle body frame.

An exhaust pipe assembly provided with a bellows pipe for connecting an upstream exhaust pipe and a downstream exhaust pipe is disposed so as to form a double pipe construction with a first joint pipe which is connected to the upstream exhaust pipe and a second joint pipe which is connected to the downstream exhaust pipe. A pair of ball receiving portions are disposed on a peripheral surface of the first joint pipe at a distance from each other in a circumferential direction, and a pair of ball receiving portions are disposed on a peripheral surface of the second joint pipe at a distance from each other in a circumferential direction. The ball receiving portions are disposed at an angular phase difference with each other in the circumferential direction. There is provided a coupling piece which has a pair of first ball joint portions engaged with the pair of ball receiving portions of the first joint pipe through a ball, and a pair of second ball joint portions engaged with the pair of ball receiving portions of the second joint pipe respectively through a ball.

This vehicle of monocoque construction is formed by fastening together resin parts which are an upper body integrally made of a transparent thermoplastic resin composition, a lower body integrally made of a thermoplastic resin composition and a floor integrally made of a thermoplastic resin composition, wherein the vehicle is characterized in that the lower body is provided with a flange part rising up from the entire perimeter of the bottom surface and, in the center of the bottom surface, a convex rib part that continues rearward from the front of the vehicle, and the upper body and the floor being fastened to the flange part and the convex rib part of the lower body. In so doing, there can be provided a vehicle which is lightweight, affords a good field of view during driving, is simple in construction, and has the necessary rigidity.

To sufficiently secure the width dimension, strength and rigidity of the rack teeth 10, and to realize the light weight construction and the manufacturing method of the rack 8, the rack teeth 10 is formed by plastic working on one side surface in the radial direction of part in the axial direction of a rod unit 9 having a circular cross-sectional shape, and the curvature radius of the portion which is separated in the radial direction from the portion where the rack teeth 10 is formed, is made greater than that of the cross sectional shape of the outer surface of the axial remaining portion of the rod unit 9.

A cord lock includes a main body having front and rear walls and two side walls, an elongated hole, and an inclined portion formed in an inner surface of the side walls; and an operating button having front and rear wall side operating portions arranged on the front wall and the rear wall, respectively, a connecting portion integrally connected to the front and rear wall side operating portions through the elongated hole, a biasing device biasing the front and rear side operating portions to the one side opening to cooperate with the inclined portion, and a gear-shaped engagement portion adapted to pinch the band inserted into the tubular shape. The operating button has a pivot portion, wherein a distance between an axial end of the pivot portion and a shaft end supporting the gear-shaped engagement portion is narrower than a thickness of the gear-shaped engagement portion.