Kabushiki Kaisha Toyota Jidoshokki

Konica Minolta Opto, Inc.

Konica Minolta, Inc.

Tokin Corporation

Atsushi Naito

Yoshiki Nagata

Shunsuke Ambo

Fumihiro Kagawa

Kanji Sekihara

Kazuhiro Shiraishi

Keiji Yashiro

Yoshihiro Okumura

Akihiko Matsumoto

Yusuke Kinoshita

Naoki Kaneko

Shinichiro Hara

Hiroshi Fukasaku

Takashi Kawashima

Hajime Mori

Hiroshi Takagi

Kazuhiro Wada

Yuiti Fujii

Toshiaki Oka

Junya Kaida

Kenji Hayakawa

Toshiyuki Majima

Michitaka Itaya

Koki Harada

Tohru Tominami

Yukiyasu Yamauchi

Yuzo Nakatsuka

Yoshikazu Hayashi

Takuma Terui

Takeshi Harasawa

Takao Arakawa

An electric compressor including a rotary shaft, a compression part, an electric motor, an inverter circuit, a filter element disposed on an input side of the inverter circuit, the filter element including a capacitor connected in parallel to a direct current power source, a holder holding the filter element, a resistor having a lead portion electrically connected to the capacitor, and a housing having an inverter accommodation chamber in which the inverter circuit, the holder, and the capacitor are accommodated. The holder includes a metal plate having an internally threaded screw hole. The resistor is held by the holder with the metal plate interposed therebetween with a bolt screwed into the internal threaded screw hole. The holder is fixed to the housing. The holder is interposed between the lead portion and the housing. An insulating heat transfer member is interposed between the metal plate and the housing.

Electric compressor

A metal film includes portions that are opposed to each other and located away from each other between the first winding and the second winding. The metal film includes the first linear part that is thermally coupled to a housing. The average value of electric resistance per unit length in the peripheral direction of the first linear part of the metal film is greater than an average value of electric resistance per unit length of locations other than the first linear part.

Motor-driven compressor

An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power. The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.

On-board electric compressor

The present disclosure provides an inductive element capable of lowering a Q-value. An inductive element includes a first cover and a second cover covering an annular core, and a first winding and a second winding wound around a region of the core, the first cover and the second cover. The first cover covers a part of an inner circumferential surface of the core, a part of an outer circumferential surface and an end surface on one end side in an axial direction. The second cover covers a part of the inner circumferential surface of the core, a part of the outer circumferential surface an end surface on the other end side in the axial direction.

Inductive element and LC filter

An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.

On-board electric compressor with a motor and noise reducing unit with inverter device having a damping unit reducing Q value of low pass filter circuit

A fluid machine includes a housing including a suction port through which fluid is drawn, an electric motor accommodated in the housing, and a drive device configured to drive the electric motor. The drive device includes a circuit board, a heat-generating component, and a metal member. The circuit board includes a pattern wire. The circuit board is opposed to an outer surface of the housing. The heat-generating component is located between the circuit board and the outer surface of the housing and spaced apart from the circuit board. The heat-generating component generates electromagnetic noise. The metal member is at least partially located between the circuit board and the heat-generating component. The metal member is configured to transmit heat from the heat-generating component to the housing and absorb or block the electromagnetic noise.

Fluid machine

This on-vehicle power conversion apparatus is provided with: a power conversion circuit to which DC power is inputted; and a noise reduction unit that is configured to reduce common-mode noise and normal-mode noise which are included in the DC power and that is provided to the input side of the power conversion circuit. The noise reduction unit is provided with: a core having a first core part and a second core part; a common-mode chalk coil having a first winding wire wound around the first core part and a second winding wire wound around the second coil part; and a smoothing capacitor that constitutes a low-pass filter circuit cooperatively with the common-mode chalk coil. The power conversion apparatus is further provided with a damping unit provided at a position intersecting the magnetic path of a magnetic flux leakage.

On-vehicle power conversion apparatus

A vehicle inverter device is configured to convert DC power to AC power. The vehicle inverter device includes a circuit having switching elements and a noise reducer. The noise reducer is provided on an input side of the circuit and is configured to reduce common mode noise and normal mode noise contained in the DC power. The noise reducer is configured by a common mode choke coil, which includes a core, a first winding wound about a first winding portion of the core, and a second winding wound about a second winding portion of the core.

Vehicle inverter device and motor-driven compressor

The optical element is a long optical element obtained by detaching a long main body part connected to a runner part via a gate part including an optical part from the gate part and chipping the detached main body, the optical part including at least a first optical surface to allow light to pass there through or to reflect light. The first optical surface has a curved surface that is curved on the short direction at least at the longitudinal end, while the first edge of the first optical surface side on the end surface of gate part side in the main body part is curved according to the curved surface example of the first optical surface. The boundary surface between the main body part and the gate part is formed so as to be narrower than the end surface of the gate part side of the main body part. At least the distance between the site corresponding to the effective region on the first optical surface at the first edge and the site corresponding to the effective region on the first optical surface at the second edge of the first optical surface side on the boundary surface is uniformly formed.

Optical element, an optical scanning device, a manufacturing method of the optical element, and a molding die

A die having a plurality of cavities and a temperature sensor for acquiring a temperature value in which the number of the cavities is larger than that of electrothermal conversion elements. When viewed from a direction perpendicular to the surface of a parting line, all cavities and a temperature sensor are arranged in a region occupied by the electrothermal conversion elements. Interval between the outlines of the cavities is smaller than the minimum interval between the outline of the cavity and the electrothermal conversion element, and the shortest distance between the electrothermal conversion element and the temperature measuring portion of a temperature measuring element is shorter than the minimum interval between the outline of the cavity and the electrothermal conversion element.

Optical-parts molding die and optical-parts manufacturing method

Provided is an optical component manufacturing method wherein various types of information, including information relating to each optical component, can be relatively easily printed on each optical component, even in the case where a plurality of optical components are manufactured in a batch. A lens, a lens unit and a camera module manufactured by using such method are also provided. Prior to dividing camera modules into individual camera modules, a pattern to be printed on each camera module, i.e., printing contents determined based on information on a first lens array or the like after formation, is printed on the surface of the first lens array at one time. Thus, information specific to each camera module can be printed even by the relatively simple method.

Optical component manufacturing method, and lens, lens unit and camera module

A method for manufacturing a mold for molding an optical element, wherein the mold comprising a base material having a molding base face and a covering layer provided on the molding base face of the base material, and an upper surface portion of the covering layer located above the molding base face forms a molding face, the method including: a covering step for forming a covering layer on the molding base face of the base material; a pressurizing step for pressurizing a surface of the covering layer; and a high-precision processing step for forming a molding face by applying high-precision processing onto the surface of the covering layer subsequent to the pressurizing step.

Method for manufacturing mold for molding optical element

A molding machine includes a fixed mold and a movable mold. The molding machine is a so called micro molding machine which provides less than 150 KN of the mold clamping force for clamping the fixed mold and the movable mold. A positional shift length between both molds is preset at &#xb1;20 gm or less. Further, cavities are inserted in base molds of both molds respectively. Furthermore, cores are inserted in the cavities. The position of each cavity is adjustable with respect to each associated base mold. The position of each core is also adjustable with respect to each associated cavity. Moreover, the molding machine can simultaneously mold a plurality of optical components.

Optical component molding apparatus and method thereof

A purpose is to provide an optical component molding apparatus for producing a small-size and high-precision optical component and achieving good transferability and stability of a molded product. A multi-cavity molding machinehas a gate, a runner, and a sprueeach having the shape determined to meet conditions (1) to (5): (1) 'Miminum gate thickness'/'Maximum runner thickness' is in a range of more than 0.2 to less than 1.0; (2) &#x201c;Gate length&#x201d;/&#x201c;Maximum runner thickness&#x201d; is in a range of more than 0.4 to less than 4.0; (3) &#x201c;Outlet diameter of sprue&#x201d; is in a range of more than 1.0 mm to less than 5.5 mm; (4) &#x201c;Sprue length&#x201d; is in a range of more than 10 mm to less than 40 mm; and (5) &#x201c;Outlet diameter of sprue&#x201d;/&#x201c;Inlet diameter of sprue&#x201d; is in a range of more than 1 to less than 8.

Optical component molding apparatus

An injection mold and an injection molding apparatus having a movable mold and a fixed mold. Each of the movable/fixed molds has bases, and a runner, a gate and a cavity are formed. The gate is composed of recesses made in mutually opposite end surfaces of sleeve-like heat insulators provided for the bases. Thereby, the gate is heat-insulated, and resin in the gate is prevented from cooling down during a pressure retention step. Thus, the resin keeps fluidity longer.

Growing community of inventors

Aichi-ken, Japan

Atsushi Naito