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11. 发明专利

JP2003212108A BRAKING DEVICE FOR VEHICLE 审中-公开
公开(公告)号：JP2003212108A
公开(公告)日：2003-07-30
申请号：JP2002016536
申请日：2002-01-25
申请人： NISSIN KOGYO KK
发明人： MATSUNO ISAO
IPC分类号： B60T13/12
摘要： PROBLEM TO BE SOLVED: To enable boosting operation for a wheel brake in response to the operation of the brake, and automatic brake control independent of the operation of the brake. SOLUTION: This device comprises: a first opening/closing valve 123 disposed between a hydraulic source 13 and the input hydraulic chambers 92F, 92R of second master cylinders M2F, M2R; a second opening/closing valve 124 disposed at a point in the passage between the input hydraulic chambers 92F, 92R and a reservoir 17, via a boosting hydraulic chamber 59 and an outlet valve 61; and a third opening/closing valve 125 disposed between the input hydraulic chambers 92F, 92R and the reservoir 17. The control of these valves is performed by switching a control mode controlling the opening/closing of the first and second opening/closing valves 123, 124 while closing the third opening/ closing valve 125 when the brake is not operated, a brake control mode controlling the opening/closing of the first and third opening/closing valves 123, 125 while closing the second opening/closing valve 124 when the brake is operated, and a control mode opening the second opening/closing valve 124 while closing the first and third opening/closing valves 123, 125 when the brake is operated. COPYRIGHT: (C)2003,JPO

12. 发明专利

JP2003212107A BRAKING DEVICE FOR VEHICLE 审中-公开
公开(公告)号：JP2003212107A
公开(公告)日：2003-07-30
申请号：JP2002016534
申请日：2002-01-25
申请人： NISSIN KOGYO KK
发明人： MATSUNO ISAO
IPC分类号： B60T13/12
摘要： PROBLEM TO BE SOLVED: To suppress the occurrence of noises when an inlet valve is opened, in a braking device for a vehicle comprising a reacting piston disposed between a boosting hydraulic chamber and a control piston, an inlet valve disposed between the boosting hydraulic chamber and a hydraulic source so as to open in response to the advancing operation of the control piston, and an outlet valve disposed between the boosting hydraulic chamber and the reservoir so as to close in response to the advancing operation of the control piston. SOLUTION: The reacting piston 62 is slidably fitted in a casing 28, the piston being capable of freely moving back and forth between a valve constituting member 71 and the control piston 48, in a state where both the valve constituting member 71, accommodated moveably back and forth in the boosting hydraulic chamber 59, and the control piston 48 are at a furthermost retreated position. The inlet valve 60 is so constituted as to open by the advance of the valve constituting member 71 from the furthermost retreated position, while the outlet valve 61 is so constituted as to close by the contact of the front end of the reacting piston 62 with the valve constituting member 71. COPYRIGHT: (C)2003,JPO

13. 发明专利

JP2003212106A HYDRAULIC BOOSTER FOR BRAKE 审中-公开
公开(公告)号：JP2003212106A
公开(公告)日：2003-07-30
申请号：JP2002016533
申请日：2002-01-25
申请人： NISSIN KOGYO KK
发明人： MATSUNO ISAO
IPC分类号： B60T13/12
摘要： PROBLEM TO BE SOLVED: To improve a feeling of brake operation while avoiding to cause a feeling of stepped stroke in the brake operation, in a hydraulic booster for a brake equipped with an inlet valve between a booster hydraulic chamber and a hydraulic source, which opens in response to the advancing operation of a control piston, with a return spring means provided between this piston and a master piston. SOLUTION: The return spring means 58 comprises: a spring support member 84 disposed, movably in an axial direction, between the master piston 31 and the control piston 48; a first return spring 86 disposed compressedly between the spring support member 84 and the control piston 48; and a second return spring 87 disposed compressedly between the spring support member 84 and the master piston 31. Until immediately before the inlet valve 60 is opened, the master piston 31 is advanced as the first return spring 86 is compressed, and after the spring support member 84 is advanced to the foremost position relative to the control piston 48, the master piston 31 is advanced as the second return spring 86 is compressed. COPYRIGHT: (C)2003,JPO

14. 发明专利

JP2003182559A MASTER CYLINDER 审中-公开
公开(公告)号：JP2003182559A
公开(公告)日：2003-07-03
申请号：JP2001382089
申请日：2001-12-14
申请人： NISSIN KOGYO KK
发明人： SHINOHARA TAKAYOSHI
IPC分类号： B60T11/20 , B60T11/16
摘要： PROBLEM TO BE SOLVED: To shorten the invalid stroke of a plunger in a master cylinder in which the inner periphery of a cup seal whose front side faces an output liquid pressure chamber is brought into slide-contact with the outer periphery of the plunger, an annular supply chamber communicating with a reserve tank is formed between the inner periphery of a ringlike bulkhead collar fixed and arranged behind the cup seal to surround the plunger and the outer periphery of the plunger, and a relief hole communicating the supply chamber with the output liquid pressure chamber at a retraction limit position of the plunger is provided in the plunger. SOLUTION: Back-up rings 33, 42 provided among the cup seals 32, 41 and the bulkhead collars 19, 21 adhere closely to the outer peripheries of the plungers 23, 24 springily. COPYRIGHT: (C)2003,JPO

15. 发明专利

JP2003148524A CALIPER BODY FOR DISK BRAKE FOR VEHICLE 审中-公开
公开(公告)号：JP2003148524A
公开(公告)日：2003-05-21
申请号：JP2001348791
申请日：2001-11-14
申请人： NISSIN KOGYO KK
发明人： KOBAYASHI NAOKI
IPC分类号： F16D65/02 , F16D55/224
摘要： PROBLEM TO BE SOLVED: To simply and precisely form a communication hole connecting hydraulic chambers to each other for cylinder holes without damaging a cutting tool edge and to reduce the number of components. SOLUTION: The two cylinder holes 10 and 10 for a first brake system are so formed that anti-disk-rotor sides of the processing holes 22 and 22 penetratingly formed in the disk axial direction are liquid-tightly closed by closing members 15 and 15. Through holes 23 and 23 are bored in a bottom wall 6g from small diameter parts 22a and 22a of the processing holes 22 and 22 respectively and the tips of the through holes 23 and 23 are connected so as to be formed into the communication hole 18 communicating the hydraulic chambers 16 and 16 to each other.

16. 发明专利

JP2002340062A DRIVING MECHANISM OF ELECTRIC DISC BRAKE 失效
公开(公告)号：JP2002340062A
公开(公告)日：2002-11-27
申请号：JP2001144244
申请日：2001-05-15
申请人： NISSIN KOGYO KK
发明人： YOSHIDA MASANAO , UEDA SHIGETETSU
IPC分类号： F16D65/18
摘要： PROBLEM TO BE SOLVED: To provide a driving mechanism for a ball screw mechanism excellent in processing ease, productivity, and effectiveness in maintenance work whereby it is possible to widen the degree of freedom in designing of the driving mechanism and allow a caliper body to slide smoothly by enhancing the weight balance of the caliper body. SOLUTION: A first bevel gear 34 is connected to a motor and rotates in the direction approximately perpendicularly to the rotary shaft of a ball screw nut 23, and with this bevel gear 34, a second bevel gear 35 is meshed to convert the rotation in the perpendicular direction into torque parallel with the rotary shaft of the ball screw nut 23. In the axial direction of the rotary shaft 38 of the second bevel gear 35, an axial direction gear 36 is formed at the periphery in such a way as wider in the axial direction. A narrow reduction flat gear 37 to mesh with the gear 36 is coupled and fixed to the ball screw nut 23 coaxially with the rotary shaft of the ball screw nut 23.

17. 发明专利

JP2002323511A OUTPUT WAVEFORM SHAPING METHOD OF WHEEL SPEED SENSOR 失效
公开(公告)号：JP2002323511A
公开(公告)日：2002-11-08
申请号：JP2001127690
申请日：2001-04-25
申请人： NISSIN KOGYO KK
发明人： TSUCHIYA TOMOHARU
IPC分类号： G01P3/481 , H03K5/1252
摘要： PROBLEM TO BE SOLVED: To surely detect a wheel speed by shaping a waveform even if a waviness is caused in a sine wave signal output by a wheel speed sensor in an output waveform shaping method of the wheel speed sensor in which a sine wave signal output from the wheel speed sensor is filtered by a filter circuit including a low-pass filter, and then input to a comparator to generate a pulse signal corresponding to a designated hysteresis voltage width by the comparator. SOLUTION: A gain at the low-pass filter for obtaining a pulse signal by the comparator when waviness occurs is determined on the basis of amplitude of waviness probably caused in an output signal of the wheel sensor, the amplitude of the minimum output waveform of the wheel sensor and a designated hysteresis voltage width set in the comparator, and a cutoff frequency of the low-pass filter is determined to satisfy the gain.

18. 发明专利

JP2002323075A ROTATION PREVENTION MECHANISM OF ADVANCING/RETREATING MOTION MECHANISM IN ELECTRICAL TYPE DISK BRAKE 失效
公开(公告)号：JP2002323075A
公开(公告)日：2002-11-08
申请号：JP2001128704
申请日：2001-04-26
申请人： NISSIN KOGYO KK
发明人： TSUCHIYA TOMOHARU , UEDA SHIGETETSU , YOSHIDA MASANAO
IPC分类号： F16D65/18 , F16H25/20
摘要： PROBLEM TO BE SOLVED: To excellently execute pressing and sliding of a friction pad by a ball screw shaft by obtaining a rotation prevention mechanism which is excellent in smooth sliding of the ball screw shaft and in durability, and to obtain the rotation prevention mechanism which is excellent in workability, productibity, and maintainability. SOLUTION: Braking is performed by sliding a pushing member of a caliper body 10 and the friction pad 3 by the ball screw mechanism 13 constituted by screwing the ball screw shaft 26 to a ball screw nut 23 and by pressing and sliding the friction pads 3 and 4 to a disk rotor 1. A rotation prevention shaft 28 is fixed and protruded in parallel with the ball screw shaft 26 to the pushing member of the friction pad 3 connected and fixed integrally slidably to the ball screw shaft 26. The rotation prevention shaft 28 is inserted and arranged so as to be slidably and not to be rotated at a rotary cylinder part 18 which is an the outer side than the ball screw mechanism 13.

19. 发明专利

JP2002302029A HYDRAULIC MASTER CYLINDER FOR CENTER VALVE-TYPE VEHICLE 失效
公开(公告)号：JP2002302029A
公开(公告)日：2002-10-15
申请号：JP2001104731
申请日：2001-04-03
申请人： NISSIN KOGYO KK
发明人： KOSUGI KAZUHIRO
IPC分类号： B60T11/16 , F16D25/08
摘要： PROBLEM TO BE SOLVED: To improve the durability by preventing the eaten phenomenon of an elastic material used in an outer annular seal member and exercise the stable and high sealing performance for a long period in a hydraulic master cylinder for a center valve-type vehicle. SOLUTION: A valve seat unit 12 press fitted in a stem hole 10 of a piston 5 is formed by integrating an inner annular seal member 30 made of a hard material and the outer annular seal member 31 made of the elastic material. A hydraulic chamber side face of the outer annular seal member 31 is a rigid seal face 30d, and a hydraulic chamber side face of the outer annular seal member 31 is an elastic seal face 31a projecting from the rigid seal face 30d. A peripheral groove 31b is cut inside the elastic seal face 31a, so that an inner peripheral side deformation part of the elastic seal face 31a is fitted in the peripheral groove 31b when a seal face 14d of a valve element 14a of the center valve 14 is abutted on the elastic seal face 31a, whereby the outer annular seal member 31 can be prevented from being eaten between the seal face 14d and the rigid seal face 30d.

20. 发明专利

JP2002295553A DRUM BRAKE FOR VEHICLE 失效
公开(公告)号：JP2002295553A
公开(公告)日：2002-10-09
申请号：JP2001096515
申请日：2001-03-29
申请人： NISSIN KOGYO KK
发明人： HASHIMOTO NOBUO
IPC分类号： F16D65/46
摘要： PROBLEM TO BE SOLVED: To enable adjustment of braking clearance in a brake drum even in a brake drum for parking brake with restricted dimension. SOLUTION: An adjusting lever 23 and a parking action lever 24 are rotatably supported at a primary side and a secondary side of a shoe main body 30, respectively. A brake clearance adjusting mechanism 26 adjusting the clearance between linings 31, 32 and a brake drum is set at the top end of the adjusting lever 23. A connecting rod 25 is intervened between the adjusting lever 23 and the parking action lever 24.

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