Oiles Corporation

Wataru Nishioka

Ryohei Kaneko

Hiroshi Watanabe

Kouichi Morishige

Naohiro Horita

Tsuyoshi Nagashima

Kenichi Okumura

The present invention enables a simple structure to provide an easy adjustment of damping torque to be caused by applied rotation. The rotary damper () is intend to limit movement of viscous fluid filled in a circular cylindrical chamber (), thereby generating a damping torque in response to an applied rotational force. The lid () is the screw-on type capable of being screwed into the casing (), and thus adjusting a clearance gap G1 between the lid () and each partition () by way of changing the screwing amount of the lid () into the casing () allows amount of viscous fluid moving through the clearance gap G1 to be adjusted, thereby resulting in adjustment of a damping torque to be caused by rotation. In addition, each axial force generation member () includes a plastically or elastically deformable element and is located between the lid () and the corresponding partition () to apply a reaction force to the lid (). This causes screwing the lid () into the casing () to generate an axial force, thereby preventing external-leakage of the viscous fluid via a threaded interface between the lid () and the casing (), and allows the leeway for the adjustment of the clearance gap G1 to increase.

Rotary damper

Provided is a rotary damper () suitable for use as a damper for a brake pedal with a fail-safe feature. In the rotary damper () intended for a brake pedal of an automobile and configured to generate a damping torque by rotation of a casing () in a forward direction N relative a rotor (), the casing () is made of thermoplastic resin and is provided with a pair of arms () projecting radially outward so as to hold a plate () therebetween. The plate () is configured to rotate about a pedal rotation center in conjunction with the brake pedal (). Moreover, the arm () out of the arms (), which is located downstream in the forward direction, includes a curved portion () with a constant width and a supporting portion () located more distal than the curved portion () is, and is configured to support the plate () with the supporting portion ().

Rotary damper, and brake system

A rotary damper () has a first sealing ring () and a first bushing () which are located between a through-hole () of a circular cylindrical chamber () inside a case () and a lower end part () of a rotor body () of a rotor (), and a second sealing ring () and a second bushing () which are located between a through-hole () in a lid () and an upper end part () of the rotor body (). The first sealing ring () has an outer peripheral surface () having a width in a direction of a center axis of the circular cylindrical chamber () and being pressed against an inner peripheral surface () of the through-hole (), and an inner peripheral surface () having a width in the direction of the center axis of the circular cylindrical chamber () and being pressed against an outer peripheral surface () of the lower end part (), and the second sealing ring () has an outer peripheral surface () having a width in the direction of the center axis of the circular cylindrical chamber () and being pressed against an inner peripheral surface () of the through-hole(), and an inner peripheral surface () having a width in the direction of the center axis of the circular cylindrical chamber () and being pressed against the outer peripheral surface () of the upper end part ().

Damper

[Problem] To provide a rotary damper wherein damping torque generated by rotation can be easily adjusted using a simple configuration. [Solution] A rotary damperlimits the movement of viscous fluid contained in a circular cylinder chamber, thereby generating damping torque against applied rotational force. This rotary damperis configured such that: a lidis screwed into a case; and the gap gbetween the lower surfaceof the lidand the upper surfaceof a partition sectionand the gap gbetween the lower surfaceof the lidand the upper surfaceof a vanecan be adjusted by adjusting the amount of screwing of the lidinto the case. This means that adjusting the amount of movement of viscous fluid through the gaps g, gcan adjust damping torque generated by rotation.

Provided is a thrust sliding bearing which, while allowing a shaft member to smoothly rotate, can support for a long period of time a thrust load acting on the shaft member. A thrust sliding bearing comprises: an upper case () mounted to an upper support for mounting a strut-type suspension to a vehicle body; a lower case () mounted to an upper spring seat for supporting the upper end of the coil spring of the strut-type suspension, the lower case () being combined with the upper case () to form an annular space (); and an annular center plate () disposed in the annular space () and enables the relative rotation between the upper case () and the lower case (). The annular space () is filled with lubricating grease. The center plate () comprises: a bearing surface () in slidable contact with the surface () to be supported of the upper case (); and annular protrusions () provided at the inner peripheral edge and the outer peripheral edge of the bearing surface () so as to extend in the circumferential direction of the center plate ().

Growing community of inventors

Fujisawa, Japan

Wataru Nishioka