Abstract: A press brake includes a pedal case having an upper portion coupled to a sliding member, which is provided on a lower table and movable in a longitudinal direction, so as to be movable and tiltable in a vertical direction, the pedal case extending on its back surface side toward the lower table relative to the sliding member, the pedal case having a grounding portion capable of being grounded on a floor surface, a rolling body provided on each of side surfaces of the pedal case in the longitudinal direction and configured to roll on the floor surface along the longitudinal direction, and an urging member configured to urge the pedal case with respect to the sliding member so that the grounding portion is separated from the floor surface.

Abstract: A press brake includes a pedal case having an upper portion coupled to a sliding member, which is provided on a lower table and movable in a longitudinal direction, so as to be movable and tiltable in a vertical direction, the pedal case extending on its back surface side toward the lower table relative to the sliding member, the pedal case having a grounding portion capable of being grounded on a floor surface, a rolling body provided on each of side surfaces of the pedal case in the longitudinal direction and configured to roll on the floor surface along the longitudinal direction, and an urging member configured to urge the pedal case with respect to the sliding member so that the grounding portion is separated from the floor surface.

Abstract: A control device of a vehicle has a drive source, a power transmission device having a plurality of rotating elements coupled via a gear and a plurality of friction engagement elements selectively coupling the plurality of rotating elements for transmitting an output of the drive source, and a lubricating device supplying a lubrication oil to the friction engagement elements for lubrication, the control device comprising: a lubrication control portion configured to increase an amount of the lubrication oil to the friction engagement elements from the lubricating device in a booming sound generating region predefined with respect to a drive source rotation speed.

Abstract: A valve device includes: a valve body having assembly holes; solenoid components configured such that a first part is inserted into each assembly hole; and a fixing member fixed to the valve body. An engagement groove is provided in an outer circumferential surface of each solenoid component in a direction intersecting an axial center of the solenoid component. Each engagement groove is provided to a portion of the first part that is located outside the assembly hole when the first part is inserted in the assembly hole. The fixing member includes locking portions. Side walls of each engagement groove are engaged with each locking portion so as to set a position in an axial direction of each solenoid component. Each locking portion is engaged with a groove bottom of each engagement groove so as to set a phase around the axial center of each solenoid component.

Abstract: A control device of a vehicle has a drive source, a power transmission device having a plurality of rotating elements coupled via a gear and a plurality of friction engagement elements selectively coupling the plurality of rotating elements for transmitting an output of the drive source, and a lubricating device supplying a lubrication oil to the friction engagement elements for lubrication, the control device comprising: a lubrication control portion configured to increase an amount of the lubrication oil to the friction engagement elements from the lubricating device in a booming sound generating region predefined with respect to a drive source rotation speed.

Abstract: A valve device includes: a valve body having assembly holes; solenoid components configured such that a first part is inserted into each assembly hole; and a fixing member fixed to the valve body. An engagement groove is provided in an outer circumferential surface of each solenoid component in a direction intersecting an axial center of the solenoid component. Each engagement groove is provided to a portion of the first part that is located outside the assembly hole when the first part is inserted in the assembly hole. The fixing member includes locking portions. Side walls of each engagement groove are engaged with each locking portion so as to set a position in an axial direction of each solenoid component. Each locking portion is engaged with a groove bottom of each engagement groove so as to set a phase around the axial center of each solenoid component.

Abstract: In an embodiment of the present invention, a piston apparatus of an automatic transmission includes a piston member capable of moving in the axial direction of the rotation shaft, and a hydraulic chamber, and has been configured so that the piston member moves in the axial direction due to pressure in the hydraulic chamber. The piston member includes a cylinder part that extends in the axial direction and to which pressure in the hydraulic chamber is transmitted, a pressing part that extends in the radial direction and presses against a friction engaging element of the automatic transmission, and a connecting part that connects the cylinder part and the pressing part and, with respect to the axial direction, is offset from the pressing part in a direction of separation from the friction engaging element. Also, the axial direction offset amount of the connecting part from the pressing part of the piston member has been set larger than the stroke amount of the piston member.

Abstract: A wave spring holding structure includes a wave spring that includes crest portions and recessed portions that are alternately formed in a circumferential direction thereof, and a first gap; a circular member provided to be rotatable around an axis; and an arc-shaped snap ring that includes a second gap, and that restricts movement of the circular member in a direction of the axis. The wave spring and the snap ring share the axis with the circular member. The wave spring and the snap ring are rotatable with respect to each other. The wave spring is disposed and held between the circular member and the snap ring so that the crest portions protrude toward the circular member, and the recessed portions protrude toward the snap ring. The first gap is formed in one of the crest portions.

Abstract: In an embodiment of the present invention, a piston apparatus of an automatic transmission includes a piston member capable of moving in the axial direction of the rotation shaft, and a hydraulic chamber, and has been configured so that the piston member moves in the axial direction due to pressure in the hydraulic chamber. The piston member includes a cylinder part that extends in the axial direction and to which pressure in the hydraulic chamber is transmitted, a pressing part that extends in the radial direction and presses against a friction engaging element of the automatic transmission, and a connecting part that connects the cylinder part and the pressing part and, with respect to the axial direction, is offset from the pressing part in a direction of separation from the friction engaging element. Also, the axial direction offset amount of the connecting part from the pressing part of the piston member has been set larger than the stroke amount of the piston member.

Abstract: A wave spring holding structure includes a wave spring that includes crest portions and recessed portions that are alternately formed in a circumferential direction thereof, and a first gap; a circular member provided to be rotatable around an axis; and an arc-shaped snap ring that includes a second gap, and that restricts movement of the circular member in a direction of the axis. The wave spring and the snap ring share the axis with the circular member. The wave spring and the snap ring are rotatable with respect to each other. The wave spring is disposed and held between the circular member and the snap ring so that the crest portions protrude toward the circular member, and the recessed portions protrude toward the snap ring. The first gap is formed in one of the crest portions.

Abstract: A frictional engagement apparatus is provided. The frictional engagement apparatus includes a first frictional engagement unit, a second frictional engagement unit disposed axially spaced from the first frictional engagement unit, and one case that supports the first and the second frictional engagement units non-rotatably circumferentially but shiftably axially relative thereto. One retaining ring is fitted to the case so as to be located between the first and second frictional engagement units. The retaining ring is abutted to the nearest first friction plate and/or the second friction plate to stop an approaching shift of the first frictional engagement unit and/or the second frictional engagement units. The retaining ring includes a u-shaped cross section defined by an annular recess that extends in a circumferential direction of the retaining ring at a radially interior portion of the retaining ring.

Abstract: A second clutch piston formed of a plurality of members including a cylindrical cylinder member, a disc-shaped bottom plate member that fits in one end portion of that cylinder member, and a snap ring, has a plurality of long positioning protrusions provided on an inner peripheral surface of the cylinder member. By abutting the disc-shaped bottom plate member against end surfaces of these positioning protrusions, the bottom plate member can be fit into the one end portion of the cylinder member without having to provide notches therein, which enables durability against a pulling force generated in the cylinder member when the friction apply device is applied to be maintained.

Abstract: A wave washer is interposed on an inner peripheral groove via a snap ring. The wave washer urges a radiation direction outer end of a bottom plate member against a wall surface side of the inner peripheral groove in a direction of an axis.

Abstract: The present invention relates to a frictional engagement apparatus comprising a first frictional engagement unit (42), a second frictional engagement unit (44) and being disposed axially spaced from the first frictional engaging unit, and one case (40) for supporting the first and the second frictional engagement unit non-rotatably circumferentially but shiftably axially relative thereto. One retaining ring (51) is fitted to the case to be located between the first and second frictional engagement unit, the retaining ring being abutted to the nearest first friction plate and/or the second friction plate to stop an approaching shift of the first frictional engagement unit and/or the second frictional engagement unit. At a portion of the retaining ring remote from the case a recess (51a) is formed for allowing an elastic deformation in a direction decreasing thickness thereof, when the first and second frictional engagement units approach to each other.

Abstract: A second clutch piston formed of a plurality of members including a cylindrical cylinder member, a disc-shaped bottom plate member that fits in one end portion of that cylinder member, and a snap ring, has a plurality of long positioning protrusions provided on an inner peripheral surface of the cylinder member. By abutting the disc-shaped bottom plate member against end surfaces of these positioning protrusions, the bottom plate member can be fit into the one end portion of the cylinder member without having to provide notches therein, which enables durability against a pulling force generated in the cylinder member when the friction apply device is applied to be maintained.