Abstract: Wind direction adjustment device (10) includes cylindrical case body (11) having flow path (22) therein, and valve (14) that is movably disposed in case body (11) and that opens and closes flow path (22). Valve (14) includes base material (61) supported by case body (11). Valve (14) is formed of a member that is softer than base material (61), and includes soft portion (62) capable of elastically contacting case body (11) in a state in which flow path (22) is closed by valve (14). Valve 14 includes deformation suppressing portions (63) that suppresses deformation of soft portion (62) caused by contact of soft portion (62) with case body (11). Deformation suppressing portions (63) are disposed at positions at which deformation suppressing portions (63) are not in contact with case body (11) in a state in which flow path (22) is closed by valve (14).

Abstract: A wind direction adjusting apparatus which can appropriately adjust a wind direction with a simple structure is provided. A case body includes an upstream portion located in a relatively upstream side of the wind, and a downstream portion located in a downstream side of the wind with respect to the upstream portion and expanded in a short direction of an outlet from the upstream portion. Fins include end fins each having a fixed end positioned along an edge portion of the outlet in a longitudinal direction and an intermediate fin located between the end fins. The end fins and the intermediate fin pivot in a same direction in conjunction with each other. Each end fin is disposed so as to intersect an imaginary line in a wind passage direction along a narrowed portion in a state in which each end fin is pivoted to a downstream portion side.

Abstract: Wind direction adjustment device is provided with cylindrical case body, movable louver including manipulation knob, and support section which supports movable louver inside the case body such that movable louver is capable of pivoting. Support section is provided with link which is provided on one of the case body side and the movable louver side and includes ball portion, at least a portion of which is on a coaxial line with manipulation knob at a neutral position of movable louver. Support section is provided with bearing portion which is provided on the other of the case body side and the movable louver side and receives ball portion. Support section is provided with protruding portion which is provided on movable louver. Support section is provided with stopper portion which is provided on link and sets a pivoting end of movable louver by abutting against protruding portion.

Abstract: Wind direction adjustment device (10) includes cylindrical case body (11) having flow path (22) therein, and valve (14) that is movably disposed in case body (11) and that opens and closes flow path (22). Valve (14) includes base material (61) supported by case body (11). Valve (14) is formed of a member that is softer than base material (61), and includes soft portion (62) capable of elastically contacting case body (11) in a state in which flow path (22) is closed by valve (14). Valve 14 includes deformation suppressing portions (63) that suppresses deformation of soft portion (62) caused by contact of soft portion (62) with case body (11). Deformation suppressing portions (63) are disposed at positions at which deformation suppressing portions (63) are not in contact with case body (11) in a state in which flow path (22) is closed by valve (14).

Abstract: A wind direction adjusting apparatus which can appropriately adjust a wind direction with a simple structure is provided. A case body includes an upstream portion located in a relatively upstream side of the wind, and a downstream portion located in a downstream side of the wind with respect to the upstream portion and expanded in a short direction of an outlet from the upstream portion. Fins include end fins each having a fixed end positioned along an edge portion of the outlet in a longitudinal direction and an intermediate fin located between the end fins. The end fins and the intermediate fin pivot in a same direction in conjunction with each other. Each end fin is disposed so as to intersect an imaginary line in a wind passage direction along a narrowed portion in a state in which each end fin is pivoted to a downstream portion side.

Abstract: Wind direction adjustment device is provided with cylindrical case body, movable louver including manipulation knob, and support section which supports movable louver inside the case body such that movable louver is capable of pivoting. Support section is provided with link which is provided on one of the case body side and the movable louver side and includes ball portion, at least a portion of which is on a coaxial line with manipulation knob at a neutral position of movable louver. Support section is provided with bearing portion which is provided on the other of the case body side and the movable louver side and receives ball portion. Support section is provided with protruding portion which is provided on movable louver. Support section is provided with stopper portion which is provided on link and sets a pivoting end of movable louver by abutting against protruding portion.

Abstract: Two electrode wires longitudinally provided along the inner surface of an elastic insulating member having a hollow portion are exposed from said elastic insulating member, the resistive element comprising a resistor body and the resistive element's lead wires is formed into a U-letter shape, said two electrode wires exposed from said elastic insulating member and said resistive element's lead wires are electrically connected via one metal plate, and a portion wherein one of said two electrode wires and one of the lead wires extending from both ends of said resistor body are electrically connected and a portion wherein the other one of said two electrode wires and the other one of the lead wires extending from both ends of said resistor body are electrically connected are separated by cutting said one metal plate.

Abstract: A power take-off (PTO) control system for a work vehicle equipped with an implement, comprising a hydraulic multi-plate PTO clutch (6) whereby power from the work vehicle is interruptibly transmitted to the implement; a control valve (15) for adjusting an actuating pressure of the PTO clutch; a manually operable clutch operation tool (17, 21) for sending an operation instruction to the control unit; and a control unit (19) for switching the PTO clutch from a disengaged state to an engaged state by controlling the control valve on the basis of the target control characteristics in response to the operation instruction of the clutch operation tool (17, 21). The target control characteristics are generated and set on the basis of the operational behavior of the clutch operation tool (17, 21).

Abstract: A foreign objection detection sensor has a lengthy sensor part having a sensor electrode having a first sensor electrode which detects a proximity of a foreign object and a second sensor electrode which detects a contact of the foreign object, a sensor terminal part provided at one end of the sensor part, a leading wire pulled out from the sensor terminal part, the leading wire being electrically connected to the sensor electrode at the sensor terminal part to provide a proximity detecting function for detecting the proximity of the foreign object to the sensor part and a contact detecting function for detecting the contact of the foreign object to the sensor part. The sensor terminal part has a support member which supports a detection circuit unit electrically connected to the sensor electrode to carry out the proximity detecting function and the contact detecting function together with the sensor electrode. The detection circuit unit is disposed in the support member.

Abstract: Two electrode wires longitudinally provided along the inner surface of an elastic insulating member having a hollow portion are exposed from said elastic insulating member, the resistive element comprising a resistor body and the resistive element's lead wires is formed into a U-letter shape, said two electrode wires exposed from said elastic insulating member and said resistive element's lead wires are electrically connected via one metal plate, and a portion wherein one of said two electrode wires and one of the lead wires extending from both ends of said resistor body are electrically connected and a portion wherein the other one of said two electrode wires and the other one of the lead wires extending from both ends of said resistor body are electrically connected are separated by cutting said one metal plate.

Abstract: A foreign objection detection sensor has a lengthy sensor part having a sensor electrode having a first sensor electrode which detects a proximity of a foreign object and a second sensor electrode which detects a contact of the foreign object, a sensor terminal part provided at one end of the sensor part, a leading wire pulled out from the sensor terminal part, the leading wire being electrically connected to the sensor electrode at the sensor terminal part to provide a proximity detecting function for detecting the proximity of the foreign object to the sensor part and a contact detecting function for detecting the contact of the foreign object to the sensor part. The sensor terminal part has a support member which supports a detection circuit unit electrically connected to the sensor electrode to carry out the proximity detecting function and the contact detecting function together with the sensor electrode. The detection circuit unit is disposed in the support member.

Abstract: A power take-off (PTO) control system for a work vehicle equipped with an implement, comprising a hydraulic multi-plate PTO clutch (6) whereby power from the work vehicle is interruptibly transmitted to the implement; a control valve (15) for adjusting an actuating pressure of the PTO clutch; a manually operable clutch operation tool (17, 21) for sending an operation instruction to the control unit; and a control unit (19) for switching the PTO clutch from a disengaged state to an engaged state by controlling the control valve on the basis of the target control characteristics in response to the operation instruction of the clutch operation tool (17, 21). The target control characteristics are generated and set on the basis of the operational behavior of the clutch operation tool (17, 21).

Abstract: A hydraulic change speed system for a working vehicle includes a gear type change speed device shiftable by an actuator, a hydraulic clutch connected to a power transmission line including the gear type change speed device, a valve unit for switching operative states of the hydraulic clutch, a controller for controlling the valve unit, and a timer for measuring a shifting time of the gear type change speed device. The valve unit is interlocked to the actuator to be controllable to pressurize the hydraulic clutch rapidly for a predetermined time from a start of engagement of the hydraulic clutch and to pressurize the hydraulic clutch gradually the predetermined time. The controller sets the predetermined time based on the shifting time measured.

Abstract: A hydraulic change speed system for a working vehicle includes a gear type change speed device shiftable by an actuator, a hydraulic clutch connected to a power transmission line including the gear type change speed device, a valve unit for switching operative states of the hydraulic clutch, a controller for controlling the valve unit, and a timer for measuring a shifting time of the gear type change speed device. The controller starts disengaging the hydraulic clutch by depressurizing the hydraulic clutch upon start of operation of the actuator, and starts engaging the hydraulic clutch by pressurizing the hydraulic clutch upon finish of operation of the actuator. The valve unit is interlocked to the actuator to be controllable to pressurize the hydraulic clutch rapidly for a predetermined time from a start of engagement of the hydraulic clutch and to pressurize the hydraulic clutch gradually the predetermined time. The controller sets the predetermined time based on the shifting time measured.

Abstract: In a working vehicle such as an agricultural tractor, a front wheel change speed device for transmitting drive to front wheels includes an equal speed clutch for driving the front wheels substantially at the same speed as rear wheels, and an accelerating clutch for driving the front wheels substantially at a higher speed than the rear wheels. In the front wheel change speed device of this invention, the equal speed clutch and accelerating clutch are arranged coaxially. The front wheel change speed device further includes a shift member axially shiftable for selectively operating the equal speed clutch and accelerating clutch, and an actuator for axially shifting the shift member.

Abstract: A tractor has hydraulic cylinders arranged reawardly of a transmission case for swinging lift arms. A plurality of control valves for controlling the hydraulic cylinders are arranged on a lid plate of the transmission case. Oil lines are disposed in the lid plate for intercommunicating the control valves.

Abstract: A friction clutch mounted in a transmission case (25) or the like and connected between a drive shaft (14) for receiving engine power and a driven shaft (15) for receiving power from the drive shaft and transmitting the power to a power takeoff shaft (11). The friction clutch includes a first sleeve (17) connected to the drive shaft, a second sleeve (16) connected to the driven shaft, friction disks (18, 19) disposed between the first sleeve and the second sleeve, the friction disks being switchable between a clutch engaging state to enable power transmission between the first sleeve and the second sleeve, and a clutch disengaging state to disable the power transmission, and a clutch piston (20) movable between a first position to place the friction disks in the clutch engaging state, and a second position to place the friction disks in the clutch disengaging state.

Abstract: A hydraulically operable transmission comprises a hydraulic clutch, a change speed control valve, change speed actuators controllable by the control valve, a pilot oil line for varying pressure states in response to operation of the actuators, an oil supply line extending to the hydraulic clutch, a clutch control valve operable with a pilot pressure applied from the pilot oil line to close the oil supply line, and a pressure buildup device mounted on the oil supply line. The pressure buildup device includes an oil chamber for producing predetermined pressure increase characteristics with a pilot pressure applied from the oil supply line and a spring load, a drain line extending from the oil chamber, and a drain control valve mounted on the drain line for opening and closing the drain line in response to the pilot pressure applied from the pilot oil line.

Abstract: A propelling drive control apparatus for a working vehicle comprising hydraulically operable friction clutches, a first clutch control valve for selecting between the friction clutches, and a second clutch control valve connected in series to the first clutch control valve. The second clutch control valve is manually switchable to a declutching position for disengaging the friction clutches, a first clutch engaging position for engaging one of the friction clutches, and a second clutch engaging position intermediate between the declutching position the first clutch engaging position. In this second clutch engaging position one of the friction clutches is operable under a lower hydraulic pressure than in the first clutch engaging position.

Abstract: A vehicle change-speed control construction for selectively engaging and disengaging a hydraulic clutch of a propelling transmission system according to a change-speed operation. Through maximum simplification and rationalization, the construction has a hydraulic control system comprised of minimized number of components consisting essentially of one pilot pressure controlled selector valve and a plurality of check valves operable in response to a change-speed operation. The improved construction is extremely simple and economical, yet achieves higher operational efficiency without transmission delay.