Nippon Soken, Inc.

Toyota Jidosha Kogyo Kabushiki Kaisha

Nippondenso Co., Ltd.

Kabushiki Kaisha Tokai Rika Denki Seisakusho

Tram, Inc.

Tsuchiya Co., Ltd.

Hiroaki Yamaguchi

Tadashi Hattori

Yoshinori Ootsuka

Minoru Nishida

Daisaku Sawada

Kenji Goto

Takamichi Nakase

Takashi Shigematu

Tadashi Ozaki

Masanori Hanaoka

Yukihide Hashiguchi

Hiroshi Fujinami

Minoru Ohta

Yasunari Kato

Yuji Takeda

Teruyoshi Ito

Kazuomi Ota

Haruhiko Suzuki

Kazuhiko Miura

Akira Kondo

Junichiro Naito

Muneo Yorinaga

Yuichi Inami

Toshiki Akita

Masahiko Miyahara

Yuta Yamanishi

Shuri Arakawa

Hideaki Ohuchi

Toshikazu Matsushita

Makoto Harazawa

Akihito Tejima

Siniti Yamamoto

Takahiro Ishiyama

Takashi Hattori

Sumiharu Yokoiwa

Mizuki Kamiya

Nobuaki Saito

Takahiro Tamura

Noriyoshi Ando

Takashi Shigemaut

Katsutoshi Fujii

A rotary dial assembly includes a rotary dial configured to selectively display a plurality of graphical images and a polarized film assembly disposed in the rotary dial and configured to control the selective displaying of the plurality of graphical images on the rotary dial. When the rotary dial is rotated the polarized film assembly is illuminated such that at least one of the plurality of graphical images is displayed on the rotary dial assembly.

Rotary dial assembly

A rotary-type switch for controlling vehicle lighting is provided. The rotary-type switch may include a housing portion that includes multiple positions that respectively correspond to multiple operation modes and a rotary dial being configured to rotate relative to the housing portion to select an operation mode of the rotary-type switch based on a position identified by a selection indicator. A controller is configured to control and operation mode of the rotary-type switch based on a vehicular power state and when the vehicular power state is OFF, regardless of the position of the selection indicator corresponding to the selected operation mode on either the housing portion or the rotary dial, the controller controls the rotary-type switch to automatically set the operation mode to that defined by an initial-operation position corresponding to a predetermined initial-operation mode.

Rotary-type switch

A fitting structure for two members includes a body and a lid member. The body includes an open space portion therein, a closed portion closing the open space portion, a fitting portion provided at the open space portion, and a front face. The lid member includes an elastic claw portion. A window portion is provided on the closed portion. A tip portion of the elastic claw portion is viewed through the window portion in a direction opposite to the fitting direction of the lid member to the body under a condition that the lid member is attached to the body. A fitting confirmation portion is provided at a peripheral edge portion of the window portion and indicates position of the tip portion of the elastic claw portion fitted to the fitting portion at a regular fitting position.

Fitting structure for two members

A dummy connector includes a main body including an opening into which a real connector is to be inserted, and a first holding portion and a second holding portion installed respectively on surfaces which face to each other in the opening, and for holding the real connector by sandwiching from a direction of height of the real connector.

Dummy connector

A lock pin ( ) is mounted on an operating member ( ), with its proximal end portion ( ) fitted therein. A distal end portion ( ) of this lock pin can slide in a cam groove so as to releasably hold the operating member in two positions. A holding spring ( ) is mounted on the operating member, and urges the lock pin toward a bottom surface of the cam groove. A pin engagement portion ( ), which engages the lock pin to prevent the dropping of the lock pin in a condition before the operating member is mounted, is formed on the operating member. An engagement cancellation portion, which disengages the lock pin from the pin engagement portion in a mounted condition of the operating member, is formed on a switch base.

Switch device

A rotary position detector comprises an integrally molded rotor made of a synthetic resin to which a contact is fixed, a housing and a cover member on which a resistance circuit surface is formed. A contact surface and the resistance circuit surface to which the contact is attached has a cylindrical recess disposed on the same axis center as the shaft or a protrusion engaging in the recess. Alternatively, the resistance circuit surface may be provided on the rotor and the contact is provided on the cover member. A terminal contact which integrates an external contact terminal and a contact may be employed.

Rotary position detecting device

An electric control apparatus includes a magnetic flux generating device for generating a magnetic flux. A first magnetic-to-electric transducer element detects a magnitude of the magnetic flux which is responsive to a motion of a movable body. A second magnetic-to-electric transducer element detects the magnitude of the magnetic flux which is responsive to the motion of the movable body. A control signal outputting device compares a detection signal output from the first magnetic-to-electric transducer element and a detection signal output from the second magnetic-to-electric transducer element with each other. The control signal outputting device is operative to output a control signal based on a result of the comparison between the detection signals.

Electric control apparatus

A pedal return device is provided for controlling operation of a pedal member. In particular, the pedal return device imparts a resistive force which resists movement of the pedal member. In the case of an automobile accelerator pedal, this feature allows the driver to more easily maintain a given level of pedal actuation. However, the resistive force is made dependent on whether the pedal member is actually being depressed. Accordingly, once a force applied to the pedal member is removed, the resistive force is correspondingly and assuredly eliminated to permit the pedal member to be reliably returned to an initial rest position by a restoration force generating device provided.

Pedal return device having improved hysteresis characteristics

A vibration and acoustic wave detecting device employing a piezoelectric element has a construction such that a piezoelectric element comprises a first surface electrode disposed on a first surface of the piezoelectric element and having a first output terminal of the detecting device, a second surface electrode opposite to the first surface thereof, a side electrode disposed to surround a side surface of the detecting device and having portions respectively extending over the first and second surfaces, the three electrodes being disposed separately from each other, and a resistor disposed on the piezoelectric element to extend across the first surface electrode and the side electrode and to be connected therewith electrically, and the piezoelectric element further comprises a conductive member which is attached to the piezoelectric element to be in contact with the second surface electrode and the side electrode and hence to provide electrical connection between both electrodes. The conductive member supports the piezoelectric element and also provides its second output terminal. Thus, the piezoelectric element and the resistor are electrically connected in parallel between the first and second output terminals of the detecting device. This construction makes it possible to simply and easily manufacture a detecting device incorporating a resistor for increasing the available frequency bandwidth without causing any problem in the manufacturing process.

Vibration and acoustic wave detecting device employing a piezoelectric

A vibration detecting apparatus comprises a housing having at one end thereof an opening, a piezoelectric element disposed within the housing, a connector mounted to the housing to cover the opening thereof and having an output pin, a lead wire for electrically connecting the piezoelectric element with the output pin, and an initially conical annular spring having an outer peripheral edge portion thereof received by an annular groove formed in an inner peripheral wall of the housing. The piezoelectric element is biased by the initially conical annular spring.

Vibration detecting apparatus

In a feedback type ignition timing control system for internal combustion engines, the predetermined correction advance/retard angle values are stored in a read/write memory at the respective storage areas defined by the respective operating conditions of an engine, and the correction advance/retard angle values are each separately rewritten in accordance with the detected associated engine condition in response to a signal detecting the feedback factor. The advance/retard angle value for the ignition timing corresponding to the detected engine condition is separately determined in accordance with the corresponding rewritten advance/retard angle value and the ignition timing is controlled to suit the respective engine conditions in accordance with the correction advance/retard angle values preliminarily rewritten in response to the feedback factor.

Feedback type ignition timing control system for internal combustion

A knock detecting apparatus for an internal combustion engine includes a vibrating sheet branched into a plurality of vibrating reeds by forming a recess from one end of the vibrating sheet. The vibrating reeds have different lengths, shapes or thicknesses, and the other end of the vibrating sheet is fixed to a supporting member which is secured to the engine thereby to allow the vibrating reeds to vibrate with different resonance characteristics in response to the vibration of the engine caused by the knocking. The vibration of the vibrating sheet is detected, for example, as a change in reluctance by forming a magnetic path through the vibrating sheet and air gaps respectively located between the free ends of the vibrating reeds and a core.

Knock detecting apparatus for combustion engines

A knock detecting apparatus for detecting the occurrence of knocking in an internal combustion engine by detecting variations in the pressure of engine cooling water. A sealed double diaphragm structure is formed by a first diaphragm which is directly responsive to variations in the cooling water pressure and not resonant at the knock frequencies and a second diaphragm which is resonant at the knock frequencies. A noncompressible fluid is contained in the sealed double diaphragm structure between the two diaphragms. Pulsations of the second diaphragm, resonant at the knock frequencies, are detected by a magnetic device or a piezoelectric device operative to output an ac signal.

Knock detecting apparatus for internal combustion engines

A method of sensing a knocking taking place in an internal combustion engine through the sensing of pulsative component of the cooling water pressure or lubricating oil pressure. The sensing of the pulsative component is made by removing the static component from the composite pressure which is the sum of the pulsative component and the static component. An apparatus for sensing a knocking taking place in an internal combustion engine has a differential pressure sensing mechanism including a pressure sensing diaphragm and a pulsation absorption mechanism. The pressure sensing diaphragm receives at its one side the composite cooling water pressure or composite lubricating oil pressure which is the sum of the pulsative component and static component. The pulsation absorption mechanism absorbs the pulsative component from the composite pressure so as to transmit only the static component of the pressure to the other side of the pressure sensing diaphragm. In consequence, the pressure sensing diaphragm is deflected only in response to the pulsative component of the pressure without being affected by the static component.

Method of and apparatus for sensing knocking in internal combustion

An ignition range detector for an internal combustion engine is disclosed, in which at each combustion of the internal combustion engine, a pressure signal of a pressure sensor for detecting the pressure in a cylinder is integrated by a signal associated with the crank angle to produce an area S.sub.1 +S.sub.2 presenting the combustion state. At the same time, the pressure signal for a hypothetical case of misfire under the same condition is integrated to produce an area S.sub.1. It is decided whether the ratio (S.sub.1 +S.sub.2)/S.sub.1 is higher than a predetermined value .alpha. or not thereby to detect an ignition range always stably regardless of the operating conditions of the internal combustion engine including the load thereon.

Ignition range detector for internal combustion engines

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Anjo, Japan

Hiroaki Yamaguchi