73results about How to "Reduce tightening force" patented technology

A fitting space having an annular opening, in which an elastic ring whose diameter of a section is D is to be fitted, is formed between a pin-press-fit hole of a link and an exposed end portion of a pin. A link inner wall face and a pin outer peripheral face in the fitting space are formed with tapered faces whose diameters decrease as they go toward an inmost of the fitting space at angles alpha and beta (alpha>beta) with respect to the axial line of the pin, respectively. The elastic ring contacts with the respective tapered faces in the fitting space at the angles alpha and beta with respect to a perpendicular passing a center of its section. Dimensions d1 and d2 between contact points at the respective tapered faces and a horizontal line passing the center of the section of the elastic ring, the diameter D of the section of the elastic ring, and the angles alpha and beta have a relation of alpha>beta, D>d1+d2 (where d1=D / 2.cos alpha, d2=D / 2.cos beta). Therefore, the links and the pin can be connected to each other securely and firmly with a sufficient holding force to the pin in the axial direction. Thus, assembly of the links and the pin can be carried out easily at a low cost.

A connector casing E required to have a sealing property includes a cover 2. The cover 2 has a cover main body 10 provided with a large vent hole H0 passing through the connector casing E in an inward and outward direction and having a predetermined inner diameter size. A permeable sheet S, which permits permeation of a gas and prevents permeation of a liquid and a solid, is integrally joined to an outside peripheral part of the large vent hole H0 so as to cover the large vent hole H0 from its outside. A cover insert member C is disposed outside the permeable sheet S to cover the permeable sheet from the outside, and a ring-shaped protrusion 22 is hermetically joined to the casing main body 10. The cover insert member C1 is provided with a small vent hole H1 which has an inner diameter smaller than the large vent hole H0 and communicates with the large vent hole H0 through the permeable sheet S.

Provided is a method of manufacturing a spherical bearing having an inside member with a metal ball portion and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected to the inside member swingably or rotatably relative to each other, including the steps of performing injection molding in which the ball portion of the inside member is inserted as a core in a mold to mold a resin liner covering the ball portion, molding the outside member covering the resin liner by a casting in which the ball portion and the resin liner are inserted as a core in the mold, and after the completion of the casting, heating the resin liner covering the ball portion through the ball portion of the inside member.

An attachment structure for a pressure detector that is such that the pressure detector is attached in an airtight manner within an insertion hole of an attachment tool main body attached to a mechanical device or pipelines, with a pipe, a gasket presser, a gasket, a split ring, and a bonnet. The configuration is such that the gasket presser and the split ring are inserted into the insertion hole of the attachment tool main body, the bonnet is inserted into the insertion hole, the bonnet is fastened to the attachment tool main body side, the gasket presser and the gasket are pressed by the split ring, and sealing portions are formed between the bottom surface of the insertion hole and one end surface of the gasket and between the tip end surface of the gasket restraint and the other end surface of the gasket.

The object of the present invention is to suppress the generation of abnormal noise from a transmission system that occurs when a vehicle is turning. A front wheel output shaft is directly linked with the transmission system, and a rear wheel output shaft is linked to the transmission system via a transfer clutch. When the front wheel output shaft rpm Nf and the rear wheel output shaft rpm Nr separate from each other beyond a specified value (α2) while turning a corner, and then the accelerator pedal is released and the engine rpm Ne and turbine rpm Nt approach each other beyond a specified value (β2), and then if vibration at a specified vibration frequency appears in the front wheel output shaft rpm Nf (γ2), the duty ratio Rd of the clutch pressure control valve 52 is decreased (δ2). Next, as the duty ratio Rd decreases, when it is determined that vibration in the front wheel output shaft rpm Nf has been eliminated (ε2), normal slip control is restored, and control is performed so that the duty ratio Rd is increased again (ζ2). By doing this, it is possible to suppress vibration of the front wheel output shaft, and thus suppress the generation of abnormal noise from the transmission system.

A handle switch wherein chattering after mounting of the handle switch to a handlebar can be restrained while maintaining assembleability of switch cases of bisection structure. The handle switch includes a first case and a second case of bisection structure formed with clamp surfaces making contact with the outer circumference of the handlebar of a motorcycle, the first case and the second case being coupled together, with the handlebar clamped between the clamp surfaces, to thereby fix the handle switch to the handlebar. At least one of the clamp surface formed in the first case and the clamp surface formed in the second case is formed with a rib serving as a fastening allowance in coupling the first case and the second case together. The width B of the rib is set to be smaller than the width A of the clamp surfaces.

Provided is a method of manufacturing a spherical bearing having an inside member with a metal ball portion and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected to the inside member swingably or rotatably relative to each other, including the steps of performing injection molding in which the ball portion of the inside member is inserted as a core in a mold to mold a resin liner covering the ball portion, molding the outside member covering the resin liner by a casting in which the ball portion and the resin liner are inserted as a core in the mold, and after the completion of the casting, heating the resin liner covering the ball portion through the ball portion of the inside member.