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1. 发明专利

JPH11153156A DRIVING FORCE TRANSMITTING DEVICE 失效
公开(公告)号：JPH11153156A
公开(公告)日：1999-06-08
申请号：JP32150297
申请日：1997-11-21
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： SAKAI TOSHIBUMI , SUZUKI KUNIHIKO , HOSOKAWA TAKASHI , SUZUKI KOICHI , IKEDA AKIHIKO , OBA MITSURU
IPC分类号： F16D27/115
摘要： PROBLEM TO BE SOLVED: To prevent leakage of flux, and improve a working efficiency by constituting an outside rotating member with a bottomed cylindrical front housing made of a non-magnetic material, and a rear housing made of a magnetic material for covering an opening arranged on a rear end of the front housing. SOLUTION: An outer case 10a is composed of a bottomed cylindrical front housing 11a and a rear housing 11b which is screwed around an opening part arranged on a rear end of the front housing 11a, and for covering the opening part. The front housing 11a is formed of aluminum alloy made of non-magnetic material, and the rear housing 11b is formed of iron made of a magnetic material. By current-carrying to an electromagnetic coil of an electromagnet a magnetic passage circulating 13, a yoke 16, a rear housing 11b, a frictional clutch 14, an armature 15, a frictional clutch 14, the rear housing 11b, and the yoke 16, and formed, and the armature 15 is attracted to the frictional clutch 14 side. Current efficiency of a pilot clutch mechanism 10d is improved without leaking a flux from the front hausing 11a and reducing flux density so as to improve an operating efficiency of the frictional clutch 14.

2. 发明专利

JPH1128942A FOUR-WHEEL DRIVE VEHICLE 失效
公开(公告)号：JPH1128942A
公开(公告)日：1999-02-02
申请号：JP18410997
申请日：1997-07-09
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： SAKAI NAOYUKI , SUZUKI KUNIHIKO , HOSOKAWA TAKASHI , SUZUKI KOICHI , IKEDA AKIHIKO , OBA MITSURU
IPC分类号： B60K17/34
摘要： PROBLEM TO BE SOLVED: To control a ratio of a driven wheel side speed reduction ratio to a driving wheel side speed reduction ratio to a wider range so as to expand a yaw rate control area by providing a control coupling controlling a transmission ratio of driving force and setting a speed reduction ratio of a driven wheel to be lower than that of a driving wheel. SOLUTION: In the subject four-wheel drive vehicle based on front two-wheel drive, a control coupling 20 is arranged in a driving force transmission passage to the rear wheel side. An input side/output side gear ratio in a front differential 16a is set to be 1, and a gear ratio of the input side to that of the output side in a rear differential 16b is set to be 0.97-0.85. Therefore, a ratio of a driven wheel side speed reduction ratio to a driving wheel side speed reduction ratio is set to be from 0:1 to N:1 (N=0-1.15). As a result, a traveling condition can be changed widely from a front wheel two-wheel drive traveling condition to a traveling condition close to a rear wheel two-wheel drive traveling condition, and a yaw rate can be controlled with higher precision.

3. 发明专利

JPH10329562A DRIVE POWER TRANSMISSION DEVICE 失效
公开(公告)号：JPH10329562A
公开(公告)日：1998-12-15
申请号：JP14269797
申请日：1997-05-30
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： OKAMOTO MASATO , SUZUKI KUNIHIKO , SAKAI NAOYUKI , SHIMADA MASAYUKI , HOSOKAWA TAKASHI , SUZUKI KOICHI , OBA MITSURU , IKEDA AKIHIKO
IPC分类号： B60K17/34 , F16D27/115
摘要： PROBLEM TO BE SOLVED: To facilitate setting and variation of torque transmission characteristics by providing a magnetic path regulation member to regulate a magnetic path area between an electromagnet and a magnetic path forming member, of which a pilot clutch mechanism consists. SOLUTION: In a cover body 11b, the opening end part of an annular recess 11b2 is formed in a large diameter and a second annular recess 11b3 in which a screw is cut is formed in the outer peripheral side of a support member 13a. A magnetic path regulation member 11c to regulate a magnetic path area is threadably attached on the inner peripheral surface of the second annular recess 11b3, and rotatably assembled at the support member 13a. The magnetic path regulating member 11c is formed in a ring state, and by changing a slide contact length (t) through movement through the second annular recess 11b3, the magnetic path area is changed. Thereby, attraction force of an electromagnetic 13 to an armature 15 is regulated and the frictional engagement forces of a friction clutch 14 and a main clutch mechanism are regulated.

4. 发明专利

JPH10213164A DRIVING FORCE TRANSMISSION DEVICE 失效
公开(公告)号：JPH10213164A
公开(公告)日：1998-08-11
申请号：JP1693497
申请日：1997-01-30
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： SAKAI TOSHIBUMI , SAKAI NAOYUKI , SUZUKI KOICHI , IKEDA AKIHIKO
IPC分类号： F16D27/112 , F16D47/00
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of the scratching sound of a clutch and the vibration of the clutch by adopting such a pilot mechanism that is provided with an armature which is absorbed by an electromagnetic coil and due to conducting electricity into the electromagnetic coil and travels in the axial direction and has no friction clutch as a pilot mechanism. SOLUTION: In this device 10, an armature 13b is attracted and travels in the axial direction when electricity is conducted into an electromagnetic coil 13a which constitutes a pilot mechanism 10d. This force in the axial direction is converted to force in the direction of rotation by a first cam mechanism 10e and is converted to friction engaging force for a clutch mechanism 10c by a second cam mechanism 10f. Consequently, it is unnecessary to generate a friction engaging force in the pilot mechanism 10d and adopt the pilot mechanism 10d without friction clutch. As a result, it is possible to prevent the occurrence of the scratching sound generated by a friction clutch and the vibration of the clutch.

5. 发明专利

JPH1030656A DRIVING FORCE TRANSMITTING DEVICE 失效
公开(公告)号：JPH1030656A
公开(公告)日：1998-02-03
申请号：JP18792596
申请日：1996-07-17
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： SAKAI TOSHIBUMI , SUZUKI KUNIHIKO , KOKUBO NAOYUKI , SHIMADA MASAYUKI , MARUYAMA TOMOHIRO , FUKUCHI HISASHI , ASHIDA SATOSHI , SUZUKI KOICHI , KANOU AKIYUKI
IPC分类号： B60K17/348 , B60K17/35 , F16D27/115 , F16D43/284 , F16D47/00 , F16D47/06 , F16D48/12
摘要： PROBLEM TO BE SOLVED: To instantly put a friction clutch in a joined condition by generating pressing force to frictionally engage the friction clutch by a first pressing force generating means and a second pressing force generating means, and controlling this by a control means. SOLUTION: Differential rotation is generated between first and second propeller shafts, and when relative rotation is generated between an outer housing 10a and an inner shaft 10b, pressing force is generated in first and second pressing force generating means 10d and 10e. A cam mechanism 16 is actuated by frictional engaging force of a pilot clutch 15, and a cam-follower 16c presses a first cam member 16a to the main clutch 10c side. A main clutch 10c is strongly pressed from both sides by pressing force generated by the first and the second pressing force generating means 10d and 10e, and is firmly and frictionally joined. An electric current is carried to an electromagnet 18 to constitute a control means 10f, and the second pressing force generating means 10e is put in an effective condition, and when differential rotation is generated between both propeller shafts, the main clutch 10c is instantly put in a joined condition.

6. 发明专利

JPH11303898A DRIVE FORCE TRANSMITTING DEVICE 失效
公开(公告)号：JPH11303898A
公开(公告)日：1999-11-02
申请号：JP10762498
申请日：1998-04-17
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： SAKAI NAOYUKI , OSAWA YOSHIKI , SUZUKI KOICHI , IKEDA AKIHIKO
IPC分类号： B60K17/34 , F16D27/115
摘要： PROBLEM TO BE SOLVED: To restrain occurrence of a hump condition of a main clutch so as to prevent the main clutch from being worn and damaged during movement by a wrecker vehicle mounted with a drive force transmitting device for actuating the main clutch by means of a pilot clutch mechanism. SOLUTION: A front housing 1 which is an outer rotary member is made of a material having a large degree of thermal expansion and a small degree of rigidity so as to restrain affection upon the frictional engagement between a main clutch 10c, and accordingly, the time by which the main clutch 10c restrains abnormal, frictional engagement of the main clutch 10c caused by elastic deformation of the housing 11a, thereby it is possible to prevent friction and damage of the main clutch 10c.

7. 发明专利

JPH11287258A ELECTROMAGNETIC FRICTION CLUTCH 失效
公开(公告)号：JPH11287258A
公开(公告)日：1999-10-19
申请号：JP8894898
申请日：1998-04-01
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： SAKAI NAOYUKI , SUZUKI KOICHI , IKEDA AKIHIKO , OBA MITSURU
IPC分类号： F16D27/115
摘要： PROBLEM TO BE SOLVED: To make improvements in the torque transfer characteristic and durability of an electromagnetic friction clutch. SOLUTION: A nitrogen diffused layer is adopted at the surface side of an iron base material consisting of applying a NITROTEC (R) process as an inner clutch plate 14a, a nitrogenous compound layer at the surface side of this nitrogen diffused layer and a clutch plate of a multilayer structure with an oxide film at the surface side of this nitrogenous compound layer, respectively. With a synergistic effect of its anticorrosiveness, wear resistance and fatigue resistance, the promotion of mirror finishedness on each frictional engaging surface of both clutch plates 14a and 14b is checked, and thus any drop in a torque transfer characteristic is prevented from occurring.

8. 发明专利

JPH11153157A DRIVING FORCE TRANSMISSION DEVICE 失效
公开(公告)号：JPH11153157A
公开(公告)日：1999-06-08
申请号：JP32151397
申请日：1997-11-21
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： SAKAI NAOYUKI , SUZUKI KOICHI , IKEDA AKIHIKO , OBA MITSURU
IPC分类号： F16D27/115
摘要： PROBLEM TO BE SOLVED: To restrain influence exerted on magnetic permeability of a welding portion on a magnetic path forming member on a driving force transmission device to make an outer case and an inner shaft in a connecting state free to transmit torque by frictionally engaging with a friction clutch by an electromagnetic control means. SOLUTION: A rotary member 10a is constituted of a front housing 11a and a rear housing 11b to be screwed on an rear end opening part of the front housing 11a and to cover it, and width of a welding portion exerting influence on magnetic permeability is reduced by connecting a main body part 11b1 made of a magnetic material of the rear housing 11b which is a magnetic path forming member and a ring part 11b2 made of a non-magnetic material by electronic beam welding.

9. 发明专利

JPH10231861A DRIVING FORCE TRANSMITTING DEVICE 失效
公开(公告)号：JPH10231861A
公开(公告)日：1998-09-02
申请号：JP4987797
申请日：1997-02-18
申请人： TOYOTA MOTOR CORP , TOYODA MACHINE WORKS LTD
发明人： IKEDA AKIHIKO , OGAWA SHINJI , SUZUKI KOICHI , OBA MITSURU , SAKAI TOSHIBUMI , TAKUNO HIROSHI , SUZUKI KUNIHIKO , KOKUBO NAOYUKI
IPC分类号： F16D27/115
摘要： PROBLEM TO BE SOLVED: To provide a driving force transmitting device wherein oil suited for the function of a clutch mechanism can be used, the clutch mechanism is controlled by an electromagnet and oil can be separated from a space in the periphery. SOLUTION: In a driving force transmitting device having a coupling case 7 and shaft 20 arranged relatively rotatably, pilot clutch 49 and main clutch 50 controlling torque transmission of the coupling case 7 and the shaft 20, an electromagnet 35 controlling operation of the pilot clutch 49 and the main clutch 50, and oil holding a function of the pilot clutch 49 and the main clutch 50, the coupling case 7, the shaft 20, a rotor 27, an X ring 32, and an O ring 34 are provided, which liquid-tightly separate a coupling oil chamber D arranging the pilot clutch 49 and main clutch 50 from a space in the periphery.

10. 发明专利

JPH10213163A DRIVING FORCE TRANSMISSION DEVICE 失效
公开(公告)号：JPH10213163A
公开(公告)日：1998-08-11
申请号：JP1297497
申请日：1997-01-27
申请人： TOYODA MACHINE WORKS LTD , TOYOTA MOTOR CORP
发明人： KOKUBO NAOYUKI , ASHIDA SATOSHI , SUZUKI KOICHI , KANOU AKIYUKI
IPC分类号： F16D27/115 , F16D47/00
摘要： PROBLEM TO BE SOLVED: To improve the durability of an electromagnetic coil without necessitating conducting a large amount of current by realizing a predetermined driving force transmission condition by a mechanical means independently from an electromagnetic means and holding or reducing an amount of electric power supplied to the electromagnetic means as it is or reducing it. SOLUTION: When pressing force applied from an electromagnetic pilot clutch mechanism 10d through a first cam mechanism 10e is small, a second cam mechanism 10f is in a non-operation condition. Pressing force generated in the first cam mechanism 10e increases, friction engaging force of a mechanical main clutch mechanism 10c increases, and transmission torque increases gradually due to an increase of friction engaging force of the pilot clutch mechanism 10d. When friction engaging force of the pilot clutch mechanism 10d reaches a predetermined value, the second cam mechanism 10f is operated to press a retainer 13 to a main clutch mechanism 10c side so that they are friction-engaged further firmly and are connected. Consequently, it is unnecessary to conduct a large amount of current to an electromagnetic coil 14d and improve the durability influenced by the generation of heat.

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