公开(公告)号：JPH07139525A

公开(公告)日：1995-05-30

申请号：JP28348293

申请日：1993-11-12

Applicant: TOYOTA MOTOR CORP

Inventor： SUKETA SUSUMU ,  OKAMOTO TOMIO ,  FUJITA TSUGUHIRO ,  TOYOKICHI YUKIHISA ,  MATSUDA MORIHIRO

IPC: B23P11/02 ,  B62D5/06 ,  F16B4/00 ,  F16D1/02

Abstract: PURPOSE:To easily press-fit two parts of a shaft into a part to be fitted so as to assemble them without causing bending or deformation of the shaft by applying compressive force on one end of the shaft and tensile force on the other end in the axial direction. CONSTITUTION:When pressing force is applied on the upper end of a torsion bar 10 by a pressing part 21, the pressing force is simultaneously applied on the upper end parts of pressing rods 36, transmitted to a movable member 34 through the pressing rods 36, and applied on the lower end engaging part 10c of the torsion bar 10 locked with the movable member 34 as downward tensile force. Consequently, compressive force acts on the press-fitting part between a cylindrical part 11 and a serration part 10a, tensile force acts on the press-fitting part between a collar 12 and a serration part 10b, and hence unfavorable stress is not generated on the center small diameter part of the torsion bar 10. Hereby, the cylindrical part 11 and the collar 12 can be assembled with the torsion bar 10 without causing bending or deformation on its center small diameter part.

公开(公告)号：JPH0720050A

公开(公告)日：1995-01-24

申请号：JP18550193

申请日：1993-06-29

Applicant: TOYOTA CENTRAL RES & DEV ,  TOYOTA MOTOR CORP

Inventor： MATSUBARA HIROYUKI ,  WADA TAKASHI ,  MATSUDA MORIHIRO ,  MASUDA RYUICHI ,  EKINO YOSHIO ,  OYAMA TADASHI

IPC: G01N21/17 ,  G01N21/55

Abstract: PURPOSE:To quickly and nondestructively evaluate the abrasion resistance of an aluminum alloy containing silicon by detecting aluminum alloy areas and silicon areas on a surface to be measured as gray-level signals based on the difference between the light reflectivity of the aluminum alloy and that of silicon. CONSTITUTION:The internal surface of a cylinder block 1 is irradiated with the light from a light source 2 and reflected light from the internal surface is passed through a wavelength selection filter 3 and changed in optical path by a reflecting mirror 4. The reflected light is received by means of a light receiving sensor 8 after passing through a photoreceptor 12 and convex lens 7 and converted into gray-level signals based on the difference between the light reflectivity of an aluminum alloy and that of silicon. Since a turntable 6 turns in the circumferential direction around a center axis 13, the linear light receiving sensor 8 can detect the the gray-level signals from the internal surface of the block 1 over the entire circumference. The detected gray-level signals can be directly observed on a monitor 10.

公开(公告)号：JPH072125A

公开(公告)日：1995-01-06

申请号：JP624094

申请日：1994-01-25

Applicant: TOYOTA MOTOR CORP

Inventor： FUJITA TSUGUHIRO ,  TOYOKICHI YUKIHISA ,  OKAMOTO TOMIO ,  SUKETA SUSUMU ,  MATSUDA MORIHIRO

IPC: B62D5/06 ,  B62D5/083 ,  C09D4/02

Abstract: PURPOSE:To simplify the structure of the power steering system and improve the productivity by providing an elastic member to elastically energize a first and a second supporting parts to the specified position relative to the torsional direction of a torsion bar body. CONSTITUTION:When the phase difference is generated between a first outer cylinder 13 and a second outer cylinder 20, first supporting parts 14, 15 to be formed on the first outer cylinder 13 are moved in the direction of the arrow B1, while second supporting part 21 to be formed on the second outer cylinder 20 is left at the initial position. Thus, the first supporting parts 14, 15 and the second supporting part 21 expand the clearance part 22a of a C-spring 22, and are moved in the mutually separating direction. The elastic force of the C-spring 22 is applied to the first supporting parts 14, 15 and the second supporting part 21, and this elastic force is applied as the force to return the first supporting parts 14, 15 and the second supporting part 21 to the original neutral position, i.e., the preset force.

公开(公告)号：JPH06241995A

公开(公告)日：1994-09-02

申请号：JP3059893

申请日：1993-02-19

Applicant: TOYOTA MOTOR CORP ,  TOYOTA CENTRAL RES & DEV ,  KANSAI PAINT CO LTD ,  KANTO JIDOSHA KOGYO KK

Inventor： HATTORI HIROSHI ,  NAKAJIMA TAKEHIKO ,  ITO NOBUHIRO ,  MATSUDA MORIHIRO ,  TERADA SHIGEO ,  WADA TAKASHI ,  SATA KENICHI ,  INAOKA MASAHIKO

IPC: B05D1/36 ,  B05D5/06 ,  G01N21/57 ,  G01N21/59

Abstract: PURPOSE:To find paint film configuration giving depth without manufacturing a painted plate by designing the absorbance of a clear layer and a base layer of the paint film and the film thickness of the clear layer by inputting the constant of the paint film into a specific equation. CONSTITUTION:For designing an absorbance beta of a base layer including a light- transmission glittering material, an absorbance alpha of a clear layer, and a film thickness t of the layer, alpha, beta, and t are determined first and arbitrarily. Then, the total of the diffusion light on the interface between the clear layer and the base layer and that on the surface of the clear layer is obtained according to alpha and t as the brightness (Iof) of background light. Further, assuming that the probability density distribution of physical quantity of a brightness I of the glittering material existing at finely divided parts obtained by dividing the base layer in thickness direction follows an exponential distribution function, a physical quantity P related to the brightness I of the glittering material where the brightness I of the entire glittering materials is larger than Iof is obtained, thus calculating a peak brightness IP of the base layer. Also, IP-Iof is obtained, alpha, beta, and t which are different from before, are determined and then pretreatment is repeated, thus determining alpha, beta, and t where IP-Iof can be minimized (not 0).

公开(公告)号：JP2005297807A

公开(公告)日：2005-10-27

申请号：JP2004118029

申请日：2004-04-13

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： MATSUDA MORIHIRO

IPC: B62D6/00 ,  B62D5/04 ,  B62D5/22 ,  B62D101/00 ,  B62D113/00

Abstract: PROBLEM TO BE SOLVED: To provide a vehicular steering control device and a vehicular steering apparatus capable of effectively suppressing the flutter phenomenon while maintaining high responsiveness of a turning wheel at a high-speed range.
SOLUTION: In the vehicular steering control device to perform the transmission ratio variable control to variably change the transmission ratio of a steering transmission system, the control gain during the variable control of the transmission ratio is set according to the steering angle of a steering wheel and the vehicle speed. The control gain setting according to the steering angle of the steering wheel and the vehicle speed may be realized by changing the relationship between the control gain setting related quantity to determine the control gain and the vehicle speed according to the steering angle of the steering wheel. More effectively, if the steering angle of the steering wheel is small, the control gain in a predetermined vehicle speed range may be set to be small compared with a case of large steering angle of the steering wheel. In this situation, the predetermined vehicle speed range may be set in a high-speed range exceeding 80 km/hour.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种能够有效地抑制颤振现象的车辆转向控制装置和车辆转向装置，同时保持高速范围内的转向轮的高响应性。 解决方案：在车辆转向控制装置中，为了可变地改变转向传动系统的传动比，执行传动比可变控制，传动比可变控制期间的控制增益根据 方向盘和车速。 根据方向盘的转向角度和车速的控制增益设定可以通过改变控制增益设定相关量之间的关系来实现，以根据方向盘的转向角确定控制增益和车速。 更有效地，如果方向盘的转向角小，则与方向盘的大转向角的情况相比，可以将预定车速范围内的控制增益设定得较小。 在这种情况下，可以将预定车速范围设定为超过80km /小时的高速范围。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2004148931A

公开(公告)日：2004-05-27

申请号：JP2002314760

申请日：2002-10-29

Applicant: Toyoda Mach Works Ltd ,  Toyota Motor Corp ,  トヨタ自動車株式会社 ,  豊田工機株式会社

Inventor： HASEGAWA ISAO ,  WATANABE OSAMU ,  YAMAMORI MOTOYASU ,  MATSUDA MORIHIRO ,  SHONO SHOICHI ,  NAKATSU CHIKATOSHI

IPC: B62D1/20 ,  B62D1/16 ,  B62D5/22 ,  B62D7/22 ,  F16D3/12 ,  F16F15/12 ,  F16F15/126 ,  F16F15/124

CPC classification number: B62D7/224 ,  B62D5/008

Abstract: PROBLEM TO BE SOLVED: To provide a transmission ratio varying steering system capable of effectively reducing noise in a cabin.
SOLUTION: A transmission ratio varying steering system includes a steering shaft 3 configured to transmit a steering angle of a steering wheel and an actuator 1 connected to the steering shaft 3, and varies the transmission ratio between a steering angle and a turning angle. The actuator 1 includes a housing 10, an input shaft 14 configured to integrally rotate with the housing 10 and connected to the steering wheel 3, a motor 12 capable of rotating a motor shaft, an output shaft 15 that is rotatably journaled to the housing 10 and transmits the turning angle to a turning system, and a gear mechanism 13 that is disposed between the motor shaft and the output shaft 15, increases or decreases the rotation angle of the motor shaft, and outputs it to the output shaft 15. A damper 25 for absorbing vibration caused by the actuator 1 is disposed between the input shaft 14 and the steering shaft 3.
COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2003137124A

公开(公告)日：2003-05-14

申请号：JP2001340288

申请日：2001-11-06

Applicant: TOYOTA MOTOR CORP

Inventor： SHONO SHOICHI ,  YANAKA TAKEHIRO ,  MATSUDA MORIHIRO ,  HASEGAWA AKIRA

IPC: B62D6/00 ,  B62D5/04 ,  B62D101/00 ,  B62D113/00 ,  B62D119/00

Abstract: PROBLEM TO BE SOLVED: To obtain a good steering feeling in a steer-by-wire system steering device for a vehicle. SOLUTION: An electronic control system 55 controls the rotation of a steering motor 15 according to the rotation of a steering wheel 11. The turning force of the steering motor 15 is transmitted to left and right front wheels Fw1 and Fw2 via a steering force transmission mechanism 16, a steering output shaft 17, a pinion gear 18 and a rack bar 19, steering the left and right front wheels Fw1 and Fw2. The electronic control system 55 controls the rotation of a reaction force motor 14 according to the torque detected by a torque sensor 53 disposed on the steering output shaft 17. The turning force of the reaction force motor 14 is transmitted to the steering wheel 11 via a reaction force transmission mechanism 13, applying steering reaction force to the steering wheel 11. The torque sensor 53 is disposed on the opposite side of the front wheels with regard to the pinion gear 18, so that a steering reaction force similar to that of a mechanically connected steering device can be obtained.

公开(公告)号：JP2003034253A

公开(公告)日：2003-02-04

申请号：JP2001221507

申请日：2001-07-23

Applicant: Toyoda Mach Works Ltd ,  Toyota Motor Corp ,  トヨタ自動車株式会社 ,  豊田工機株式会社

Inventor： KANEKO TETSUYA ,  YAMAMORI MOTOYASU ,  HONAGA SUSUMU ,  WATANABE OSAMU ,  MATSUDA MORIHIRO

IPC: B62D1/16 ,  B62D5/22

Abstract: PROBLEM TO BE SOLVED: To provide a transfer ratio variable mechanism which has a length in the radial direction shorter than that of a conventional transfer ratio variable mechanism. SOLUTION: The transfer ratio variable mechanism 11 includes a housing 13 for accommodating the body 30 of the mechanism which varies a transfer ratio between the steering angle of a steering wheel and the steering angle of front wheels. A hollow shaft 12 is formed at the end part of the input side of the housing 13 and a spiral cable case 25 is fitted on the outside of the hollow shaft 12. A bush 26 has an insertion member 26a and a flange piece 26 of thin plate which projects in the radial direction from the end part opposite to the insertion member 26a. The insertion member 26a is pressed into the tip of the hollow shaft 12 so that it is secured and the flange piece 26b causes the spiral cable case 25 to be pressed into the housing 13 side so that it is secured. Since the thickness of the flange piece 26 is thin (that is, being short in the axial direction O), the overall length of the transfer ratio variable mechanism in the axial direction O becomes short.

Abstract translation: 要解决的问题：提供一种传动比可变机构，其具有比常规传送比可变机构的径向长度的径向长度。 解决方案：传送比可变机构11包括壳体13，用于容纳机构的主体30，其改变方向盘的转向角和前轮的转向角之间的传递比。 空心轴12形成在壳体13的输入侧的端部处，螺旋状电缆壳体25装配在中空轴12的外侧。衬套26具有插入构件26a和薄的凸缘片26 从与插入部件26a相反的端部沿径向突出的板。 插入构件26a被压入中空轴12的顶端，使得其被固定，并且凸缘片26b使得螺旋状电缆壳体25被压入壳体13侧，使得其被固定。 由于凸缘片26的厚度薄（即轴向O短），所以传递率可变机构在轴向方向O上的总长度变短。

公开(公告)号：JP2002195068A

公开(公告)日：2002-07-10

申请号：JP2000390554

申请日：2000-12-22

Applicant: TOYOTA MOTOR CORP

Inventor： KIZAKI JIRO ,  HARA KATSUYA ,  MATSUDA MORIHIRO ,  SHIRAKI TAKAHIRO ,  ODA KAZUNORI

IPC: B60T17/00 ,  F02D29/02

Abstract: PROBLEM TO BE SOLVED: To provide a control device for an on-vehicle internal combustion engine, capable of sufficiently obtaining effect on the improvement of fuel economy caused by the automatic stop of an internal combustion engine during driving. SOLUTION: A brake booster 8 for storing negative pressure being produced in an inlet passage 11 of an engine 2 as brake negative pressure and reducing the full pedal depression force of a brake pedal 7, based on the pressure difference between the brake negative pressure, and the atmospheric pressure is mounted on an automobile 1. The engine 2 is stopped automatically, as one of the conditions that the brake negative pressure reach a value necessary for the normal operation of the brake booster 8 (required value REQ2). The required value REQ2 of the brake negative pressure which is used as the condition of automatic stop of the engine 2 is varied, according to the braking state of the automobile 1, so as to become the optimum value for reconciling the normal operation of the brake booster 8 with the improvement of the fuel economy of the engine 2, independently of the braking state of the automobile 1.

公开(公告)号：JP2002173009A

公开(公告)日：2002-06-18

申请号：JP2000371342

申请日：2000-12-06

Applicant: TOYOTA MOTOR CORP

Inventor： HARA KATSUYA ,  KIZAKI JIRO ,  MATSUDA MORIHIRO ,  SHIRAKI TAKAHIRO

IPC: B60T7/12 ,  B60T13/66 ,  F02D29/02

Abstract: PROBLEM TO BE SOLVED: To provide an automatic engine stopping and starting device capable of obtaining braking performance satisfying a driver's braking request during low speed running after the automatic stop of an engine in the course of decelerating running and improved in fuel cost reducing effect. SOLUTION: When the deceleration G after the automatic stop of the engine is below a preset value G0 of deceleration during the decelerating running (YES in the step S190) and an increase in treading strength is detected (YES in the step S210), a booster negative pressure is increased. That is, when deceleration is not output due to lowering of booster negative pressure and a driver's operation of actuating a brake pedal is detected, the booster negative pressure is increased to increase the braking force. The negative pressure is supplied by idling the engine by a motor generator. Thus, necessary deceleration is obtained to attain the working of the brakes satisfying the braking request, so that while the stop of the engine is continued, a vehicle can be stopped at a stop distance required by the driver.