Patents by Inventor Takamitsu Kubota
Takamitsu Kubota has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20150177025Abstract: A position detecting device includes a first sensor portion having a first mold resin object molded for a first magnetic sensor and a first wiring and a second sensor portion having a second mold resin object molded for a second magnetic sensor and a second wiring. The first sensor portion and the second sensor portion have a protrusion part defined between the first magnetic sensor of the first sensor portion and the second magnetic sensor of the second sensor portion to provide a clearance between the first magnetic sensor and the second magnetic sensor.Type: ApplicationFiled: December 17, 2014Publication date: June 25, 2015Inventors: Takehito MIZUNUMA, Tomoyuki TAKIGUCHI, Takamitsu KUBOTA, Yoshiyuki KONO
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Patent number: 8941399Abstract: A first integrated circuit includes a first voltage output circuit for outputting a voltage, which proportionally increases in correspondence to an angular position of a throttle valve, a first protective resistor, a first output terminal connected to the first protective resistor, and a first abnormality detection circuit for outputting a first abnormality detection signal based on a voltage produced by the first protective resistor. A second integrated circuit is configured similarly to the first integrated circuit by a second voltage output circuit, a second protective resistor, a second output terminal, and a second abnormality detection circuit.Type: GrantFiled: December 10, 2012Date of Patent: January 27, 2015Assignee: Denso CorporationInventors: Tetsuya Hara, Yoshiyuki Kono, Toru Shimizu, Takamitsu Kubota
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Patent number: 8878525Abstract: A permanent magnet is fixed to a stationary portion. A yoke made of magnetic material is provided to a rotating portion. The yoke is tube-shaped to surround the permanent magnet and has a chord portion into which a magnetic flux generated by the permanent magnet preferentially flows. The chord portion is arranged in such a manner as to be close to the permanent magnet. A Hall element is arranged at a specified position of the stationary portion relative to the permanent magnet 20. The Hall element outputs a signal which corresponds to a density and an angle of a magnetic flux generated between the chord portion and the permanent magnet.Type: GrantFiled: July 19, 2012Date of Patent: November 4, 2014Assignee: Denso CorporationInventors: Tetsuya Hara, Yoshiyuki Kono, Toru Shimizu, Takamitsu Kubota
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Publication number: 20140306696Abstract: A magnetism sensing element is provided to be rotatable relative to permanent magnets and outputs a magnetic force detection value, which corresponds to a perpendicular component of magnetic flux. A Hall IC calculates and outputs an output voltage, which corresponds to a relative rotational angle between the permanent magnets and the magnetism sensing element, based on the magnetic force detection value outputted by the magnetism sensing element. The Hall IC calculates the output voltage as V2=k×arcsin(V1/(VM+?))+Voffset, in which V1, V2, VM, k, ? and Voffset indicate the magnetic force detection value, the output voltage, a maximum value of the magnetic force detection value, a gain, a predetermined value and a predetermined offset value.Type: ApplicationFiled: February 26, 2014Publication date: October 16, 2014Applicant: DENSO CORPORATIONInventors: Takehito MIZUNUMA, Tomoyuki TAKIGUCHI, Takamitsu KUBOTA, Yoshiyuki KONO
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Patent number: 8848329Abstract: A high-side output transistor and a low-side output transistor of an output circuit control voltages of conductors, which connect a power supply terminal and ground, and outputs a voltage signal to an output terminal through an output conductor. A voltage output circuit detects a voltage applied to the high-side output transistor based on a potential difference of a first resistor provided closer to the output terminal side. A comparator circuit outputs a signal to turn off a first switch and a second switch provided in the conductors, when the output voltage of the voltage output circuit exceeds a reference voltage Vr.Type: GrantFiled: December 3, 2012Date of Patent: September 30, 2014Assignee: Denso CorporationInventors: Takamitsu Kubota, Yoshiyuki Kono, Toru Shimizu
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Publication number: 20140148066Abstract: A terminal arrangement device electrically connects an electric device, which is received in a housing, to an external device, and includes a first connecting terminal fixed to the housing. The first connecting terminal has a first supporting portion and a second supporting portion which are elastically deformable such that an output terminal of the electric device is supported between the first supporting portion and the second supporting portion. The first supporting portion has a flexural rigidity which is different from a flexural rigidity of the second supporting portion.Type: ApplicationFiled: November 22, 2013Publication date: May 29, 2014Applicant: DENSO CORPORATIONInventors: Hirofumi HAGIO, Takehito MIZUNUMA, Takamitsu KUBOTA
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Patent number: 8736261Abstract: A sensor module includes a sensor, a cover, and a wiring unit. The cover holds the sensor and includes a connector configured to make a connection with an external device. The wiring unit is held by the cover, is arranged from the connector to the sensor, and includes a connecting member extending from the connector to a central region of the cover in its width direction, which is perpendicular to the central line, and a wiring member extending from the central region of the cover in its width direction to a vicinity of the sensor. The cover and connecting member are integrally formed from a mold material. The connecting member includes a first connecting terminal exposed from a surface of the mold material at the central region of the cover in its width direction. The wiring member includes a second connecting terminal conductively joined to the first connecting terminal.Type: GrantFiled: January 12, 2012Date of Patent: May 27, 2014Assignee: Denso CorporationInventors: Satoru Hiramoto, Yoshiyuki Kono, Akitoshi Mizutani, Takamitsu Kubota, Koichiro Matsumoto
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Patent number: 8710832Abstract: A rotation angle sensor includes a housing, a detected object, a magnetism generation section, a housing cover, a circuit substrate, a sensing IC, and a resin body. The sensing IC includes a magnetism detection element, a molded body, and leads. The magnetism detection element outputs a signal in accordance with a change in a magnetic field due to a rotation of the detected object. The molded body covers the magnetism detection element. One end portion of each lead is electrically coupled with the magnetism detection element and the other end portion of each lead protrudes from the molded body and is electrically coupled with the circuit substrate. The resin body seals a portion of the molded body located between the magnetism detection element and the housing cover, the leads, and the circuit substrate.Type: GrantFiled: April 11, 2012Date of Patent: April 29, 2014Assignee: Denso CorporationInventors: Satoru Hiramoto, Yoshiyuki Kono, Akitoshi Mizutani, Takamitsu Kubota, Atsushi Tanaka, Takehito Mizunuma
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Patent number: 8698491Abstract: A position detecting device has an output circuit, which controls voltages of signal lines connecting a power supply and a ground by a power side transistor and a ground side transistor. An output signal line connects a connection point of the signal lines and an output terminal. A first comparator circuit outputs a signal “1” when a current flowing in the line between the power supply and the connection point is larger than a normal current flowing into the ground from the power supply in a normal state. A second comparator circuit outputs a signal “1” when a current flowing in the line between the connection point and the ground is larger than the normal current. When the signal “1” is output from the first comparator circuit or the second comparator circuit, a cutoff circuit turns off a switch disposed in the output signal line.Type: GrantFiled: February 6, 2013Date of Patent: April 15, 2014Assignee: Denso CorporationInventors: Hiroyuki Shintani, Takamitsu Kubota, Yoshiyuki Kono
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Publication number: 20140039829Abstract: A position detector includes a Hall element that detects a magnetic flux density and a temperature detection element that detects the temperature of the Hall element. In a rotation angle calculation process, a temperature correction value a is calculated by substituting a detection temperature t of the temperature detection element and a reference maximum voltage V0 at a reference temperature t0 for a=V0×k (t?t0). Next, a correction maximum voltage Vt is calculated by substituting the temperature correction value a for a temperature characteristic formula of Vt=V0+a. Further, a rotation angle ? of a magnet relative to the Hall element is calculated by substituting an output voltage VH of the Hall element and the correction maximum voltage Vt for ?=sin?1 (VH/Vt). Since the correction maximum voltage Vt is corrected according to the temperature, the rotation angle is accurately detected.Type: ApplicationFiled: July 29, 2013Publication date: February 6, 2014Applicant: DENSO CORPORATIONInventors: Takamitsu KUBOTA, Akitoshi MIZUTANI, Yoshiyuki KONO
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Publication number: 20140012537Abstract: A position detection apparatus includes a magnetic generator, a magnetic detector, a storage, and a rotation angle calculator. The rotation angle calculator calculates a relative rotation angle of the magnetic generator with respect to the magnetic detector based on a voltage output from the magnetic detector and a relational expression of ?=sin?((VH?c)/V0)?b. In the relational expression, the relative rotation angle is defined as ?, the voltage output from the magnetic detector is defined as VH, a true maximum value of the voltage output from the magnetic detector is defined as V0, a first true correction value is defined as b, and a second true correction value is defined as c.Type: ApplicationFiled: July 3, 2013Publication date: January 9, 2014Inventors: Takamitsu KUBOTA, Akitoshi MIZUTANI, Yoshiyuki KONO
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Patent number: 8487578Abstract: A movement detection unit detects a movement of a detected object and outputs a voltage signal to an electronic control unit. A buffer unit implements buffer amplification on the outputted voltage signal. A pull-up resistor element or a pull-down resistor element is connected with the buffer unit via a wiring portion. A current detection unit detects a direction of an electric current flowing through the wiring portion to output a safe specific voltage signal to the electronic control unit on disconnection of the wiring portion. A power-supply-voltage detection unit detects decrease in a power supply voltage applied to the movement detection unit. A voltage switching unit sets the voltage signal, which is outputted to the electronic control unit through the wiring portion, on a high-voltage side or a low-voltage side according to the detected direction of the electric current, on detection of decrease in the power supply voltage.Type: GrantFiled: November 18, 2011Date of Patent: July 16, 2013Assignee: Denso CorporationInventors: Takamitsu Kubota, Akitoshi Mizutani, Yoshiyuki Kono
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Publication number: 20130078852Abstract: A terminal-supporting apparatus includes a resin part made of non-conductive resin material and a plurality of conductive terminals including parallel terminal portions which are directly supported by the resin part. The parallel terminal portions are electrically connected to each other through an electric element. The resin part supporting the parallel terminal portions is made of non-conductive resin material mixed with non-conductive reinforced fibers of which thermal expansion coefficient is smaller than that of the non-conductive resin material. An extending direction of the parallel terminal portion is referred to as a longitudinal direction and a direction perpendicular to the longitudinal direction is referred to as a perpendicular direction. The non-conductive reinforced fibers have a fiber direction which is substantially the same as the perpendicular direction.Type: ApplicationFiled: September 14, 2012Publication date: March 28, 2013Applicant: DENSO CORPORATIONInventors: Takehito MIZUNUMA, Takamitsu KUBOTA, Toru SHIMIZU, Yoshiyuki KONO
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Publication number: 20130033259Abstract: A permanent magnet is fixed to a stationary portion. A yoke made of magnetic material is provided to a rotating portion. The yoke is tube-shaped to surround the permanent magnet and has a chord portion into which a magnetic flux generated by the permanent magnet preferentially flows. The chord portion is arranged in such a manner as to be close to the permanent magnet. A Hall element is arranged at a specified position of the stationary portion relative to the permanent magnet 20. The Hall element outputs a signal which corresponds to a density and an angle of a magnetic flux generated between the chord portion and the permanent magnet.Type: ApplicationFiled: July 19, 2012Publication date: February 7, 2013Applicant: DENSO CORPORATIONInventors: Tetsuya Hara, Yoshiyuki Kono, Toru Shimizu, Takamitsu Kubota
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PHYSICAL QUANTITY DETECTION APPARATUS AND INSPECTION METHOD OF PHYSICAL QUANTITY DETECTION APPARATUS
Publication number: 20130018619Abstract: A physical quantity detection apparatus includes a signal output section, a correction value calculation section, and a processing section. The signal output section outputs signals in accordance with a change in physical quantity of a detected object. The correction value calculation section calculates a correction value. The processing section corrects values based on actual output values of the signal output section with the correction value, calculates physical quantities of the detected object based on corrected values, and outputs calculated physical quantities. The correction value calculation section calculates the correction value based on primary error amounts that are differences between post-interpolation actual output values calculated by executing a linear function interpolation process to the values based on the actual output values within a predetermined physical quantity range and the values based on the actual output values corresponding to the post-interpolation actual output values.Type: ApplicationFiled: July 11, 2012Publication date: January 17, 2013Applicant: DENSO CORPORATIONInventors: Tetsuya HARA, Takamitsu Kubota -
Publication number: 20120268111Abstract: A rotation angle sensor includes a housing, a detected object, a magnetism generation section, a housing cover, a circuit substrate, a sensing IC, and a resin body. The sensing IC includes a magnetism detection element, a molded body, and leads. The magnetism detection element outputs a signal in accordance with a change in a magnetic field due to a rotation of the detected object. The molded body covers the magnetism detection element. One end portion of each lead is electrically coupled with the magnetism detection element and the other end portion of each lead protrudes from the molded body and is electrically coupled with the circuit substrate. The resin body seals a portion of the molded body located between the magnetism detection element and the housing cover, the leads, and the circuit substrate.Type: ApplicationFiled: April 11, 2012Publication date: October 25, 2012Applicant: DENSO CORPORATIONInventors: Satoru Hiramoto, Yoshiyuki Kono, Akitoshi Mizutani, Takamitsu Kubota, Atsushi Tanaka, Takehito Mizunuma
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Publication number: 20120181641Abstract: A sensor module includes a sensor, a module cover, and a wiring unit. The cover holds the sensor and includes a connector configured to make a connection with an external device. The wiring unit is held by the cover and is arranged from the connector to the sensor. The wiring unit includes a connecting member extending from the connector to a central region of the cover in its width direction and a wiring member extending from the central region of the cover in its width direction to a vicinity of the sensor. The cover and the connecting member are integrally formed from a mold material having insulation properties. The connecting member includes a first connecting terminal exposed at the central region of the cover. The wiring member includes a second connecting terminal conductively joined to the first connecting terminal.Type: ApplicationFiled: January 12, 2012Publication date: July 19, 2012Applicant: DENSO CORPORATIONInventors: Satoru HIRAMOTO, Yoshiyuki Kono, Akitoshi Mizutani, Takamitsu Kubota, Koichiro Matsumoto
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Publication number: 20120146568Abstract: A movement detection unit detects a movement of a detected object and outputs a voltage signal to an electronic control unit. A buffer unit implements buffer amplification on the outputted voltage signal. A pull-up resistor element or a pull-down resistor element is connected with the buffer unit via a wiring portion. A current detection unit detects a direction of an electric current flowing through the wiring portion to output a safe specific voltage signal to the electronic control unit on disconnection of the wiring portion. A power-supply-voltage detection unit detects decrease in a power supply voltage applied to the movement detection unit. A voltage switching unit sets the voltage signal, which is outputted to the electronic control unit through the wiring portion, on a high-voltage side or a low-voltage side according to the detected direction of the electric current, on detection of decrease in the power supply voltage.Type: ApplicationFiled: November 18, 2011Publication date: June 14, 2012Applicant: DENSO CORPORATIONInventors: Takamitsu Kubota, Akitoshi Mizutani, Yoshiyuki Kono
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Patent number: 7915889Abstract: A linear displacement detection apparatus is configured to convert a linear displacement of a shaft into a rotary displacement of a sensor rotor of a rotary displacement sensor so as to detect the linear displacement. A sensor lever is fixed to the sensor rotor and rotatable about an axis of the sensor rotor. A sensor rod is located closer to the shaft than the sensor lever and configured to transmit the linear displacement of the shaft to the sensor lever. A bearing member is located closer to the shaft than the sensor rod and configured to release rocking of the shaft.Type: GrantFiled: September 10, 2008Date of Patent: March 29, 2011Assignees: Denso Corporation, Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Shintani, Hisataka Okado, Yoshiyuki Kono, Takashi Kawashima, Takamitsu Kubota, Shinji Ikeda
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Patent number: 7893689Abstract: A displacement measuring device includes a stationary magnetic member for providing an accommodation space and a first and second magnetic circuits, a movable magnetic member disposed in the accommodation space to move in its longitudinal direction, a magnetic sensor for sensing magnetic flux flowing in the first and second magnetic circuits. The stationary member includes a sensor supporting member disposed in line with an axis of symmetry, a pair of yoke members axisymmetrically disposed at opposite sides of the sensor supporting member, a pair of permanent magnets each of which is disposed between one of the yoke members and the sensor supporting member. The permanent magnets are polarized so that magnetic flux flows in one of the magnetic circuits opposite in direction to magnetic flux flowing in the other magnetic circuit. The magnetic sensor is disposed on the sensor supporting member to confront the moving magnetic member at a first air gap.Type: GrantFiled: September 25, 2008Date of Patent: February 22, 2011Assignee: Denso CorporationInventors: Tomohiro Ito, Takamitsu Kubota, Yoshiyuki Kono