Abstract: A relief valve structure (20) attached to a pump body (10) includes: a first discharge portion (31) for discharging oil when a discharge pressure is a first predetermined pressure; a second discharge portion (32) for discharging the oil when the discharge pressure reaches a second predetermined pressure higher than the first predetermined pressure; a third discharge portion (33) for discharging the oil when the discharge pressure exceeds the first predetermined pressure and reaches the second predetermined pressure or a pressure lower than the second predetermined pressure; and a pressure relief hole (34) for releasing the oil from an area around a valve spring (23). The second discharge portion, the first discharge portion, the third discharge portion, and the pressure release hole are provided in this order between an introduction portion (29) and a spring retaining member (24) when viewed from the introduction portion (29).

Abstract: The object of the present invention is realized by providing a steering device having: a column pipe for supporting a shaft; an outer column; a fixing bracket, and a tightening tool, wherein the outer column includes an embracing main body portion that holds the column pipe so that the column pipe can move in a front-rear direction, and clamp portions for widening and narrowing a slit formed in the embracing main body portion in a width direction, and an inner peripheral recessed portion is formed on an inner peripheral side of the embracing main body portion opposite the slit so as to extend from a rear end of the embracing main body.

Abstract: A steering device includes a column pipe, an outer column A, a fixed bracket, a stopper bracket, and a tightening tool. The stopper bracket has a first suspended plate-like portion and a second suspended plate-like portion. A telescopic long hole and an impact absorbing long hole into which a bolt shaft can be inserted from the front side toward the rear side are formed in each of the first and second suspended plate-like portions. A first collapse portion that is bent by colliding with the bolt shaft is provided between the telescopic long hole and the impact absorbing long hole of either the first suspended plate-like portion or the second suspended plate-like portion. A second collapse portion is provided as an inclined side on either the top sides or the bottom sides of the impact absorbing long holes of the first and second suspended plate-like portions.

Abstract: There is provided a control valve including a casing, a rotor that has a rotary shaft rotatably supported by the casing via bushings, and a sealing ring that is disposed on an inner side of each bushing in an axial direction. Both end portions of the rotary shaft are formed into stepped shapes which respectively come into contact with the bushings from the inner side in the axial direction. Areas of both the end portions of the rotary shaft projected in the axial direction are set to be equal to each other. Penetration holes which allow portions on outer sides of the sealing rings in the axial direction to be open to the atmosphere are respectively formed on a bottom wall portion and a lid body of the casing.

Abstract: A steering system includes an inner column; an outer column including a guide tube part that supports the inner column to be movable in an axial direction and a holding tube part in which a slit extending in the axial direction is formed; and a telescopic adjustment mechanism that switches between a locked state in which an interval of the slit is reduced and movement of the inner column is regulated and an unlocked state in which the interval of the slit is increased and the movement of the inner column is allowed. An inner circumferential surface of the guide tube part has support surfaces that slidably support an outer circumferential surface of the inner column, and flanks located on the same circumference as the support surfaces and are separated from the outer circumferential surface of the inner column in a radial direction.

Abstract: A stopper bracket (40) is fixed to an inner pipe (13) at a location between the pair of clamp parts (23 and 23). The hanger bracket (50) is assembled with the stopper bracket (40), and a pair of side plates (51 and 51) of the hanger bracket (50) are interposed between the pair of clamp parts (23 and 23) and the pair of outer column support parts (11a and 11a). The guide mechanism (60) guides the hanger bracket (50) so that the hanger bracket (50) is restricted from displacing relative to the stopper bracket (40) in a front-rear direction of a vehicle and is capable of displacing relative to the stopper bracket (40) in a vehicle width direction. A support mechanism (70) supports the hanger bracket (50) relative to the stopper bracket (40).

Abstract: There is provided a control valve including a cylindrical casing having an inlet port and a first outlet port for a fluid, and a valve accommodated in the casing to be rotatable around an axis extending in an axial direction of the casing and having a flow path communicating with the inlet port to allow the fluid to flow therethrough, wherein a first communication port communicating with the flow path and the first outlet port according to a rotational position of the valve is formed in the valve, and a fail opening configured to be opened and closed by a thermostat is formed in a portion of the casing facing the inlet port in an opening direction of the inlet port.

Abstract: A control valve includes a casing having an inlet port for a fluid, an axially rotatable valve accommodated in the casing and having a flow path communicating with the inlet port. An upstream outlet port and a downstream outlet port passing through the casing are formed at intervals in the casing. An upstream communication port and a downstream communication port, which respectively communicate between an inside of the flow path and the upstream outlet port and between the inside of the flow path and the downstream outlet port according to a rotational position of the valve are formed in the valve. A flowing direction changing portion for changing a flowing direction of the fluid in the flow passage is provided in a portion of the flow path which is located on a downstream side in relation to the upstream communication port in the flowing direction of the fluid.

Abstract: A control device is a device for controlling a control angle of a valve which has a minimum value in a change in opening area in accordance with the control angle, and includes a control angle instruction acquisition unit configured to acquire a control angle instruction of the valve, an expansion instruction acquisition unit configured to acquire an expansion instruction indicating whether to expand the opening area, a control angle information acquisition unit configured to acquire control angle information indicating a control angle of the valve, a control angle calculation unit configured to calculate a control angle of the valve on the basis of the control angle instruction acquired by the control angle instruction acquisition unit, the expansion instruction acquired by the expansion instruction acquisition unit, and the control angle information acquired by the control angle information acquisition unit, and a drive control unit configured to output drive information of the valve based on a control angl

Abstract: A method of manufacturing a thermo valve includes an overlaying step of overlaying a valve body onto a thermo actuator so as to cover a groove portion; and a caulking step of caulking an installing portion of the valve body onto the thermo actuator. The caulking step is performed by pressing, by use of a jig, the valve body and the thermo actuator toward an axis center in a radial direction. A pressing face of the jig has a short side portion and a long side portion longer than the short side portion. Pressing is performed with the long side portion being substantially in parallel to the axis center of the thermo actuator and the short side portion being substantially in parallel to the groove portion.

Abstract: A housing of an oil pump includes a suction port, a discharge port, and a partitioning section formed to partition the suction port and the discharge port. The discharge port has discharge groove portions each formed in a groove shape so as to introduce oil from the partitioning section, and an extension portion formed adjacent to the discharge groove portions and extending continuously from an end of the partitioning section. The extension portion has a taper surface extending from an end of an upper surface of the partitioning section to form a downward slope.

Abstract: A relief device for an oil pump includes a relief valve including a small diameter valve chamber and a large diameter valve chamber and a valve housing that includes a relief discharge section, a temperature sensitive valve, an oil pump, a main channel, a relief channel, and an auxiliary channel. The relief channel causes one side of the small diameter valve chamber and the large diameter valve chamber and the oil pump to always communicate with each other and enables oil to be discharged from the relief discharge section. The auxiliary channel enables the other one side of the small diameter valve chamber and the large diameter valve chamber and the oil pump to communicate with each other. The temperature sensitive valve is included in the auxiliary channel.

Abstract: A hydraulic control apparatus includes: a branch path that branches from a passage connected to an oil pump and equipment to which oil is supplied by the oil pump; an accumulator connected to the branch path to accumulate and discharge high-pressure oil supplied from the branch path; a check valve provided in an oil inlet path through which oil flows into the accumulator; a balance valve unit including a reference pressure chamber, a balance valve body that is biased toward an opening side by an opening compression spring, and a control pressure chamber; and a control solenoid that introduces or discharges the high-pressure oil into or from the control pressure chamber.

Abstract: A relief valve device includes: a housing including a valve chamber, an orifice, and a relief discharge port; a valve body that opens and closes the relief discharge port while moving inside the valve chamber of the housing; a relief valve including an elastic member that elastically biases the valve body in a direction in which the valve body closes the relief discharge port; and an oil control valve that controls the supply of oil into the valve chamber, wherein an inlet port for the oil supplied from the oil control valve and the orifice are configured such that oil can always circulate in the valve chamber.

Abstract: A steering device according to the present invention has: a column pipe; a hanger bracket; an outer column that covers the column pipe in such a manner that the column pipe can move in a front-back direction; a fixed bracket that sandwiches the outer column; a fastening tool that has a bolt shaft and an operation lever portion, is inserted into a long hole of the hanger bracket, and locks and unlocks the outer column and the fixed bracket; a stopper member that is provided in the bolt shaft and swings as the bolt shaft rotates; and a telescopic regulating member that moves in the front-back direction together with the column pipe. The stopper member is capable of coming into abutment with the telescopic regulating member in an unlocked state but is not capable of coming into abutment with the telescopic regulating member in a locked state.

Abstract: A pump housing has a main oil passage, a return oil passage provided substantially in parallel with the main oil passage, and a valve insertion hole extending across the main oil passage such that a closed fore end of the valve insertion hole reaches in the vicinity of the return oil passage. The valve insertion hole has a female screw formed at an open end thereof, and a through-hole is formed in the pump housing, having one end connected to the valve insertion hole at a portion adjacent to the closed fore end thereof and an opposite end opened to the outside of the pump housing. With the valve insertion hole thus provided, a temperature sensitive valve mechanism can be readily inserted in the valve insertion hole at any time.

Abstract: A first main back pressure supply port 55 and a first subsidiary back pressure supply port 56 are formed in a first sliding contact surface 5a of a first side member 5, the first main back pressure supply port 55 is formed in a groove shape in the first sliding contact surface 5a, and the first subsidiary back pressure supply port 56 communicates with the first subsidiary discharge port 54. A second main back pressure supply port 65 and a second subsidiary back pressure supply port 66 are formed in a second side member 6, the second main back pressure supply port 65 passes through the second side member in the axial direction and the second subsidiary back pressure supply port 66 is formed in a groove shape in a second sliding contact surface 6a.

Abstract: The internal gear pump according to the present invention includes: an inner rotor; an outer rotor that rotates with predetermined eccentricity to a rotation center of the inner rotor; an outer ring that rotatably holds the outer rotor, and has at least three cam protruded parts formed; a pump housing that has a rotor chamber; pins in the same number as that of the cam protruded parts; and operation means for oscillating the outer ring. Positions of the pins are set so that a diameter center of the holding-inner peripheral part of the outer ring is moved by the operation means along a locus of a circle, the radius of which is the eccentricity to the rotation center of the inner rotor.

Abstract: A steering apparatus includes: a fixed bracket; an outer column; an arm portion; a column pipe; a steering shaft A including an upper shaft rotatably attached to the column pipe and a lower shaft which is connected by an universal joint and in which a male shaft and a female shaft engage with each other so as to freely extend and contract; and a fastening tool. The arm portion includes: bifurcated arm-shaped portions that extend from a front side in the axial direction of the outer column toward an outer side in the axial direction; a first linking portion formed between the arm-shaped portions so as to protrude upward from upper edges of the arm-shaped portions; and a second linking portion that protrudes downward from lower edges of the arm-shaped portions, and the second linking portion protrudes from the arm-shaped portions by a larger amount than the first linking portion.