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1. 发明专利

JPH0257726A HYDRAULIC POWER TRANSMITTING COUPLING 失效
公开(公告)号：JPH0257726A
公开(公告)日：1990-02-27
申请号：JP20404288
申请日：1988-08-17
申请人： FUJI TECHNICA INC
发明人： SUZUKI SATORU , INA HIDEAKI , TAKADA MASAHIRO , IZUMI HISASHI
IPC分类号： F16D31/02
摘要： PURPOSE:To obtain basic torque characteristics, which are suitable for a power distributing device for a vehicle, in the power distributing device for a vehicle by generating the oil pressure in a plunger chamber by taking advantage of flow resistance at an orifice in a discharge passage and transmitting the torque thus generated. CONSTITUTION:When a difference in a revolving speed between a cam ring 11 and a rotor 12 occurs, a plunger 15, which is on a discharge stroke, is pushed toward the shaft centerline. Thus, the oil in a plunger chamber 14 is pushed out into a main passage 16 via an orifice 22, so that an inlet valve 20 closes an inlet passage 18. At this time, the plunger 15 is subject to a reaction because of the resistance of the orifice 22. Therefore, if the cam ring 11 is rotated against this reaction, torque is generated, and if the cam ring 11 is rotated further, a suction stroke is brought about. Next, at the time of quick acceleration/deceleration, a flywheel rotates a rotary valve 21 in order to close a discharge passage 17, thereby obtaining large torque. Thus, the basic torque characteristics, which are suitable for a driving power distributing device, and the driving power performance, which is equivalent to the performance of a direct, 4-wheel drive car, can be obtained.

2. 发明专利

JPH03213729A HYDRAULIC POWER TRANSMISSION COUPLING 失效
公开(公告)号：JPH03213729A
公开(公告)日：1991-09-19
申请号：JP803590
申请日：1990-01-17
申请人： FUJI TECHNICA INC
发明人： SUZUKI SATORU , INA HIDEAKI , YAMADA TAKEHISA
IPC分类号： F16D31/02 , F16D67/04
摘要： PURPOSE:To suppress the temperature rise of a coupling within the allowable limit by prohibiting the movement of an accumulator piston at the time of the coupling temperature rising to the specified value, and generating frictional torque between an input and an output shafts by the pressure of sealed oil through braking mechanism. CONSTITUTION:When a coupling is moved by the expansion/contraction of oil sealed therein and the temperature of the coupling rises, an accumulator piston 24 for absorbing the expansion of oil moves to the left, and upon reaching the set temperature, a push rod 45 is brought into contact with clutch plates 47, 48. When the temperature further rises, pressure in a hydraulic chamber 41 rises, so that the clutch plate 47 is pressed to the clutch plate 48 through a clutch facing 48A, and braking force acts between an input and an output shafts, that is, between a cam housing 3 and a rotor 4. In this case, the braking force is intensified proportionally to the rise of temperature. Accordingly, when the temperature of the coupling reaches the specified value because of bad road running or the like, the differential rotation of the coupling is lowered to suppress exothermicity in the coupling.

3. 发明专利

JPH0338433A POWER TRANSMISSION DEVICE FOR VEHICLE 失效
公开(公告)号：JPH0338433A
公开(公告)日：1991-02-19
申请号：JP17504889
申请日：1989-07-06
申请人： FUJI TECHNICA INC
发明人： SUZUKI SATORU , INA HIDEAKI , TAKADA MASAHIRO , IZUMI HISASHI
IPC分类号： B60K17/35 , F16D31/00 , F16D31/02
摘要： PURPOSE:To prevent occurrence of tight corner braking phenomenon by controlling a valve means which closes an orifice mounted on a discharge passage of a hydraulic pump which is driven due to difference of rotating speed of front and rear wheels depending on the operating condition of vehicle. CONSTITUTION:A hydraulic power transmission joint drives a hydraulic pump consisting of a plunger 17, a cam housing 18, etc. due to difference of rotating speed between a rotor 1 which transmits power to front wheels and a driven sprocket 7 to which driving force is transmitted from a rear wheel drive propeller shaft. It closes an orifice 28 mounted on a discharge passage 29 by a valve means 38 and transmits driving force to front wheels. In this case, a controller controls the valve means 38 based on signals from a sensor which detects the operating condition of vehicle. For example, it does not lock the orifice 28 during running at a tight corner. Also it determines the timing of locking based on the function of differential rotating speed and duration time to lock the orifice, thereby preventing that tight braking phenomenon occurs and that temperature exceeds allowance temperature.

4. 发明专利

JPH03327A HYDRAULIC POWER TRANSMISSION COUPLING 失效
公开(公告)号：JPH03327A
公开(公告)日：1991-01-07
申请号：JP13365989
申请日：1989-05-26
申请人： FUJI TECHNICA INC
发明人： SUZUKI SATORU , INA HIDEAKI , TAKADA MASAHIRO , IZUMI HISASHI
IPC分类号： F16D31/02
摘要： PURPOSE:To enable use of a large-diameter suction valve by providing a rotor, stored in a cam housing and forming plunger chambers, a suction valve, provided in the same axis as the plunger chamber, and a delivery valve, provided in a delivery line formed from the side wall of the plunger chamber to the center of the rotor. CONSTITUTION:Multiple plunger chambers 4 are formed axially in a rotor 2 stored free to rotate in a cam housing 1, and multiple plungers 5 are stored free to slide in the chamber 4 through a return spring 8B. A suction valve 7 is provided at the bottom of the chamber 4 in the same axis as the chamber 4 and a delivery valve 11 is provided in a delivery line 10 opened to the side wall of the chamber 4 and formed toward the center of the rotor 2. By this, the suction valve 7 can be increased in diameter even when a coupling is small and, as a result, sufficient amount of hydraulic oil can be sucked. Also, since a plug 9 for holding the return spring 8A of the suction valve 7 is held by a spring 8B, the working accuracy of the plug 9 and the chambers 4 can be lowered.

5. 发明专利

JPH02190622A HYDRAULIC POWER TRANSMITTING COUPLING 失效
公开(公告)号：JPH02190622A
公开(公告)日：1990-07-26
申请号：JP796789
申请日：1989-01-17
申请人： FUJI TECHNICA INC
发明人： SUZUKI SATORU , INA HIDEAKI
IPC分类号： F16D31/02
摘要： PURPOSE:To improve cooling performance and durability by forming an oil circulating groove in the intermediate position of a plunger provided at the outer diameter part and communicating an inlet passage with a plunger chamber. CONSTITUTION:An orifice valve 14 moves to the right when the delivery pressure or the temperature reaches the specified value, and an orifice 13 is closed by a needle valve 17. In addition, an oil circulating groove 18 is formed in the intermediate position of a plunger 5 provided at the outer diameter part of a rotor. A low pressure chamber 16 and an inlet passage 19 are communicated through this oil circulating groove 18, and the inlet passage 19 is communicated with a plunger chamber 4 through an inlet valve. Cooling performance as well as durability can be thus improved.

6. 发明专利

JPH02159423A HYDRAULIC POWER TRANSMISSION COUPLING 失效
公开(公告)号：JPH02159423A
公开(公告)日：1990-06-19
申请号：JP31153088
申请日：1988-12-09
申请人： FUJI TECHNICA INC
发明人： SUZUKI SATORU , INA HIDEAKI , TAKADA MASAHIRO , IZUMI HISASHI
IPC分类号： F16D31/02
摘要： PURPOSE:To prevent generation of unnecessary torque to improve the rate of fuel consumption and reduce the outer diameter of a coupling by arranging plungers parallel to the axis direction so that centrifugal force is not applied to the plungers during normal travelling of a vehicle. CONSTITUTION:When the rotating speed difference is produced between a cam housing 1 and a rotor 2, plungers 6A and 6B are axially pressed by cam faces 1A and 1B to push out the oil in plunger chambers 5A and 5B through an orifice 8 to a main passage 7. Due to resistance of the orifice 8, oil pressure of the plunger chambers 5A and 5B rises to produce reaction force in the plungers 6A and 6B, and the cam housing 1 rotates against the reaction force to produce torque. The torque is proportional to the oil pressure, the oil pressure is proportional to the square of flow velocity of the oil flowing through the orifice 8, and the flow velocity of the oil varies with the rotating speed difference between the cam housing and the rotor. The torque proportional to the square of the rotating speed difference is thus obtained. When there is no rotating speed difference, no centrifugal force is applied to the plunger 6, so that the plungers are not pressed against the cam 1A and 1B, and thereby no transmission of unnecessary torque is performed.

7. 发明专利

JPH03244835A HYDRAULIC POWER TRANSMISSION JOINT 失效
公开(公告)号：JPH03244835A
公开(公告)日：1991-10-31
申请号：JP4063290
申请日：1990-02-21
申请人： FUJI TECHNICA INC
发明人： SUZUKI SATORU , INA HIDEAKI , YAMADA TAKEHISA
IPC分类号： F16D31/02
摘要： PURPOSE:To simplify both inlet and discharge valves in structure by installing a valve element, provided with plural units of inlet ports and discharge, in a rotor member, and constituting it to produce flow resistance in space between a high pressure chamber interconnected to these discharge ports and a low pressure chamber in a joint. CONSTITUTION:When a rotational difference is produced in an internal between a cam 1 and a rotor 4, a plunger 6 is pressed in the axial direction by a cam surface 2. Therefore the plunger 6 forces out oil in a plunger chamber 5 to a high pressure chamber 16 via a rotary valve 10, a discharge port 12A and a discharge passage 12B, while an inlet-discharge combined port 8 is closed by the rotary valve 10. A flow resistance of oil is produced by an orifice 18 lying between the high pressure chamber 16 and a low pressure chamber 20 and thereby reaction is produced in the plunger 6 as well, so that torque is transferred to an interval between the cam 1 and the rotor 4. When the plunger 6 comes to an inlet stroke, oil in the low pressure chamber 20 is taken into the plunger chamber 5 by way of an inlet passage 11B and an inlet port 11A of the rotary valve 10. Owing to the said constitution, both inlet and discharge valves are simplified in terms of structure.

8. 发明专利

JPH03328A HYDRAULIC POWER TRANSMISSION COUPLING 失效
公开(公告)号：JPH03328A
公开(公告)日：1991-01-07
申请号：JP13366089
申请日：1989-05-26
申请人： FUJI TECHNICA INC
发明人： SUZUKI SATORU , INA HIDEAKI , TAKADA MASAHIRO , IZUMI HISASHI
IPC分类号： F16D31/02
摘要： PURPOSE:To shorten the time for returning from a locked condition by leaking a hydraulic oil in a high-pressure chamber to a low-pressure chamber when a detecting mechanism, provided in a main line for connecting to delivery and suction lines of fluid, is moved at a specified delivery pressure or a specified temperature to close an orifice. CONSTITUTION:When a delivery pressure reaches a specified value, an orifice value 24 is moved to the right against a spring 25 until it comes in contact with the staged portion of a rotor 12. Although a needle valve 26 closes an orifice 23, there exists a clearance 40 between the orifice valve 24 and the needle valve 26 and a hydraulic oil in a high-pressure chamber 16A leaks to a low-pressure chamber 16B through the clearance 40. Accordingly, when a load torque on a coupling is removed, the orifice valve 24 returns to the original position by the spring 25 to shorten the time for returning from a locked condition.

9. 发明专利

JPH02199324A HYDRAULIC POWER TRANSMISSION JOINT 失效
公开(公告)号：JPH02199324A
公开(公告)日：1990-08-07
申请号：JP927689
申请日：1989-01-18
申请人： FUJI TECHNICA INC
发明人： SUZUKI SATORU , INA HIDEAKI , TAKADA MASAHIRO , IZUMI HISASHI
IPC分类号： F16D31/02
摘要： PURPOSE:To improve durability and workability by making a cross section in the axial direction of a cam surface of a cam ring in the state of a straight line and making the tip end of a plunger abutted on the cam surface in the state of an arc and a straight line. CONSTITUTION:A cross section in the axial direction of a cam surface 11A of a cam ring 11 is made in the state of a straight line. The tip end of a plunger 15 abutted on the cam surface 11A is made in the state of an arc as well as a straight line. As the cam surface 11A and the plunger 15 is all the time brought into contact with each other in the state of a straight line, the outer circumference of the cam ring 11 can be reduced and the surface pressure of the cam surface 11A can be lowered. In this way, durability is improved and workability can be made with good vehicle loaded ability.

10. 发明专利

JPH0272225A HYDRAULIC POWER TRANSMISSION JOINT 失效
公开(公告)号：JPH0272225A
公开(公告)日：1990-03-12
申请号：JP21884388
申请日：1988-09-01
申请人： FUJI TECHNICA INC
发明人： SUZUKI SATORU , INA HIDEAKI , TAKADA MASAHIRO , IZUMI HISASHI
IPC分类号： F16D31/02
摘要： PURPOSE:To eliminate both volumetric and torque variations by forming a cam surface with an equal velocity part where a plunger stroke comes to an equal velocity to its rotation, and a functional curved part serving as the specified functional relation. CONSTITUTION:In a hydraulic power transmission joint, A shows a circular radius R at a plunger tip, B a locus describing the center of a plunger tip circular arc, C a pitch diameter of this plunger tip circular center when a plunger comes to a bottom dead point, and X a stroke from the bottom dead point of the plunger, respectively. A cam surface 11B of a cam ring is formed from an equal velocity curved part, where a stroke rate of the plunger 15 comes to an equal velocity to relative rotation between the cam ring and a rotor, and two functional curved parts connecting the said equal velocity curved part through the specified functional relation. Thus, both volumetric and torque variations are brought to almost nothing. In consequence, such a joint that checked vibration or the like can be realized.

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