Yamaha Hatsudoki Kabushiki Kaisha

Tf-metal Co., Ltd.

Nippon Steel Sumitomo Metal Corporation

Takashi Imamura

Seiji Sawai

Atsushi Yasuda

Tohru Okada

Hiroki Fujimoto

Masanori Yasuyama

Kensuke Kamada

Takeshi Kinugasa

Makoto Ichikawa

Teruki Sakamoto

Takuro Sato

Ryuta Koshiishi

In a pair of side walls of an upper rail, a pair of right and left slits extending from lower ends of the side walls to an intermediate position are formed. Right and left side edges of at least one reinforcing plate fit into the pair of left and right slits. The upper rail includes a pair of right and left tongue pieces formed on the side walls as to be positioned higher than the slits, and the reinforcing plate includes a pair of right and left recesses formed at the upper portions of the left and right side edges and with which the pair of right and left tongue pieces are engaged. The tongue-piece enters the recess in a state where an upper end surface abuts an upper tapered surface of the recess and is bent into an S-shape in the recess and engaged with the recess.

Seat sliding device and method of manufacturing the seat sliding device

A gearbox includes a first divided body and a second divided body, and a shaft projection is formed on and a through-hole is formed in divided surfaces of the first divided body and the second divided body. A second recess on the second divided body side includes a second arc portion formed concentrically with an axis center of a worm wheel, and an upper linear portion and a lower linear portion which extend linearly toward the first divided body side from both ends of the second arc portion. A first recess on the first divided body side includes a first linear portion which extends linearly in a direction orthogonal to an intersecting direction, and an upper arc portion and a lower arc portion which are formed continuous to both ends of the first linear portion.

Gearbox mechanism and seat sliding device provided with the gearbox mechanism

In an electric seat slide device of the present invention, a rear-side bracketincludes a first support memberfixed to a lower rail, a second support memberfixed to the lower railtogether with the first support member, a female screw memberas a first nut member through which a screw shaftpasses, and a second nut memberthrough which the screw shaftpasses. A pair of side wall portionsextending along a lower rail longitudinal direction and a vertical wall portionof the second support memberwhich is formed orthogonal to the straight line along the lower rail longitudinal direction are sandwiched between the female screw memberand the second nut member

Electric seat slide device

A shock absorber includes a cylinder and a piston. The piston is configured to partition an internal space of the cylinder into two oil chambers and is capable of sliding in an axial direction of the cylinder. The piston having formed therethrough a communication path configured to bring the two oil chambers into communication with each other. The shock absorber also includes a first rod and a second rod. The first rod extends in a first direction of the axial direction with respect to the piston. The second rod has a diameter larger than a diameter of the first rod, and extends in a second direction of the axial direction, which is opposite to the first direction, with respect to the piston. The shock absorber further includes a rod mounting member, which is provided on the first rod, and a cylinder mounting member, which is provided on the cylinder and arranged as offset from an axis of the cylinder.

Shock absorber, vehicle, and snowmobile

An upper arm projected line Lis defined as a straight line formed by projecting an upper arm line Lonto the projection line P. a lower arm projected line Lis defined as a straight line formed by projecting the lower arm line Lonto the projection line P. An intersection point Pxbetween the upper arm projected line Land the lower arm projected line Lis located in a region Adefined higher than the horizontal plane Pand defined farther outward in the right-left direction than the skiThe suspension enables turning performance of the straddle-type vehicle to be improved.

Suspension, and straddle-type vehicle, snow mobile, and all-terrain vehicle with the suspension

A motor mounting structure for an electric seat sliding device includes: a motor; first and second elastic support members arranged to be mounted on the first and second protruding portions of the motor; a bracket arranged to support the both ends of the motor through the first and second elastic support members; and the second elastic support member being arranged to be moved between a position at which the second elastic support member is engaged with the second guide portion, and a position where the second elastic support member is disengaged from the second guide portion, and where the second elastic support portion is mounted on the second protruding portion of the motor positioned at the initial assembly position.

Motor mounting structure for electric seat sliding device

Various embodiments of a snowmobile are disclosed. The lower arm is arranged below the upper arm. The lower arm includes proximal portions and connected to the ski support frame. The lower arm extends outwardly from the proximal portions and in the vehicle width direction and connects the ski support frame and the ski. The proximal portions and of the lower arm are positioned higher than the lower end of the engine. At least a portion of the lower arm is positioned higher than the rotational center of the crank shaft. This structure can prevent the center of gravity of the vehicle body from becoming high and reduce running resistance when the vehicle traveling in deep snow.

Snowmobile

This specification relates to a snowmobile. Each of the right suspension and the left suspension includes a damper capable of expanding and contracting according to the vertical movement of the lower arm and a spring that exerts spring force in the expansion/contraction direction of the damper. The cylinder of the right damper and the cylinder of the left damper are connected to each other through a hydraulic fluid channel so that the hydraulic fluid flows between the cylinder of the right damper and the cylinder of the left damper. This snowmobile can reduce the difference in contact pressure on snow surface between the left ski and the right ski, when the vehicle turns.

The present specification relates to a snowmobile. The upper arm includes two proximal portions connected to the vehicle frame and the upper arm extends outwardly from the two proximal portions in the vehicle width direction and the upper arm is connected to the knuckle. The two proximal portions are rotatable so that the knuckle and the skis can move up and down relative to the vehicle frame. The axis Ax, passing through the rotation center Cof the two proximal portions of the upper arm, goes through a position of the rotation center of the secondary shaft or through a position above the rotation center of the secondary shaft. This structure can reduce the force acting on the vehicle body frame via the upper arm and prevent an increase in the force.

A snowmobile includes a quadrilateral linkage system formed between a vehicle body frame, a front torque arm assembly, a rear torque arm assembly, and an extendable member. The four-node linkage is coupled with at least one slide rail to provide for the vertical distance between the vehicle body frame and the at least one slide rail to vary. The nodes of the four-node linkage are configured to generally define a quadrilateral shape in at least fully contracted and fully expanded configurations.

Snowmobile suspension system

A drive belt suspension system for a snowmobile includes an improved construction in which an excessive shock is not directly received by the snowmobile frame to ensure a smooth operation of the suspension system. The suspension system includes a suspension arm arranged to suspend a slide rail assembly from a frame assembly of the snowmobile body. The suspension arm has a sleeve connected to the slide rail assembly for pivotal movement about a lower axis and a rod connected to the frame assembly for pivotal movement about an upper axis. The rod is supported by the sleeve and has a pair of stoppers that interpose the sleeve therebetween. The lower axis is positioned between the respective stoppers in a direction parallel to a longitudinal dimension of the drive belt suspension system.

Growing community of inventors

Shizuoka, Japan

Takashi Imamura