Abstract: In a vehicle body side portion structure, a center pillar includes an upper pillar section joined to a roof side rail and a lower pillar section joined to a side sill, the upper pillar section including a metallic pipe having a high-strength steel plate, has a substantially constant cross-sectional shape, and is convexly curved outwardly in a vehicle width direction, the lower pillar section is formed by two pressed components including a steel plate having lower strength than the steel plate of the hollow metallic pipe of the upper pillar section and are joined to each other into a closed cross-sectional shape, and the upper pillar section is joined to the two pressed components such that the lower edge part of the upper pillar section is inserted within a section configured by the two pressed components of the lower pillar section and having the closed cross-sectional shape.

Abstract: A tire device includes a vibration power generating element, a signal processing unit, and a transmitter. The vibration power generating element is arranged inside a tire and outputs a voltage corresponding to a time variation of a vibration generated in a tread of the tire. The signal processing unit is disposed inside the tire and performs signal processing on the voltage outputted from the vibration power generating element. The transmitter is arranged inside the tire and sends data subjected to the signal processing in the signal processing unit to a device provided outside the tire. The signal processing unit and the transmitter are driven by power generated in the vibration power generating element.

Abstract: A first and second pipe materials forming a front side frame are arranged in an up-and-down direction in a first horizontal portion, in a left-and-right direction in a second horizontal portion, and replaced from the up-and-down direction to the left-and-right direction in an inclined portion between the first horizontal portion and the second horizontal portion, and at least in the first horizontal portion and the second horizontal portion, the first and second pipe materials are welded to each other by welds, and therefore, it becomes possible to change in the longitudinal direction the cross-sectional shape or bending stiffness of the front side frame formed by joining the first and second pipe materials without changing the cross-sectional shapes thereof in the longitudinal direction, thus providing the front side frame that has a light weight but has excellent impact absorption performance at the time of a collision.

Abstract: A structure for a front portion of an automobile body includes a bulkhead side, which is joined to a front portion of a front side frame extending in the fore-and-aft direction extends in the vertical direction, and a side frame gusset, which provides a connection between the front portions of the front side frame and a wheel house upper member. The bulkhead side and the side frame gusset are joined by a linking panel having a right-angled triangle shape when viewed from the front within a plane perpendicular to an axis in the fore-and-aft direction. When a load is applied for relatively moving the front side frame, the side frame gusset and the wheel house upper member supporting the load by a shear force of the linking panel disposed within the plane enhance the rigidity of a front portion of a vehicle body and minimize any increase in weight.

Abstract: A ringing suppression circuit for a communication circuit that performs communication through a transmission line includes a high side switch connected between a high potential reference point and a high side line of the transmission line, a low side switch connected between a low potential reference point and a low side line of the transmission line, and a ringing suppression section. The ringing suppression section turns on the high side switch based on a difference between a potential of the high side line and a potential applied to a control terminal of the high side switch. The ringing suppression section turns on the low side switch based on a difference between a potential of the low side line and a potential applied to a control terminal of the low side switch.

Abstract: In a vehicle body side portion structure, a center pillar includes an upper pillar section joined to a roof side rail and a lower pillar section joined to a side sill, the upper pillar section including a metallic pipe having a high-strength steel plate, has a substantially constant cross-sectional shape, and is convexly curved outwardly in a vehicle width direction, the lower pillar section is formed by two pressed components including a steel plate having lower strength than the steel plate of the hollow metallic pipe of the upper pillar section and are joined to each other into a closed cross-sectional shape, and the upper pillar section is joined to the two pressed components such that the lower edge part of the upper pillar section is inserted within a section configured by the two pressed components of the lower pillar section and having the closed cross-sectional shape.

Abstract: A slew rate regulation circuit varies a slew rate of a waveform of a voltage outputted to a DC motor through a N-channel MOSFET. The slew rate regulation circuit lowers a peak level by dispersing frequency components of switching noise, which develops in a frequency range higher than a frequency range determined by a carrier frequency.

Abstract: A first and second pipe materials forming a front side frame are arranged in an up-and-down direction in a first horizontal portion, in a left-and-right direction in a second horizontal portion, and replaced from the up-and-down direction to the left-and-right direction in an inclined portion between the first horizontal portion and the second horizontal portion, and at least in the first horizontal portion and the second horizontal portion, the first and second pipe materials are welded to each other by welds, and therefore, it becomes possible to change in the longitudinal direction the cross-sectional shape or bending stiffness of the front side frame formed by joining the first and second pipe materials without changing the cross-sectional shapes thereof in the longitudinal direction, thus providing the front side frame that has a light weight but has excellent impact absorption performance at the time of a collision.

Abstract: A bracket with nut fitted into an interior of a groove-shaped bead formed on a surface of a member includes a nut part into which a bolt is screwed, and a bracket part that supports the nut part and is retained by an opening formed in the bead. The bracket part includes the base portion and a first to third leg portions, and if the bolt is screwed into the nut part in a state in which the second leg portions and the third let portions are inserted into the opening, the third leg portions are pushed by the bolt to thus open out the second leg portions on the interior side of the opening, thus retaining the bracket part so as not to fall out of the opening and thereby enabling another member to be secured to the base portion of the member into the nut part.

Abstract: A structure for a front portion of an automobile body includes a bulkhead side, which is joined to a front portion of a front side frame extending in the fore-and-aft direction extends in the vertical direction, and a side frame gusset, which provides a connection between the front portions of the front side frame and a wheel house upper member. The bulkhead side and the side frame gusset are joined by a linking panel having a right-angled triangle shape when viewed from the front within a plane perpendicular to an axis in the fore-and-aft direction. When a load is applied for relatively moving the front side frame, the side frame gusset and the wheel house upper member supporting the load by a shear force of the linking panel disposed within the plane enhance the rigidity of a front portion of a vehicle body and minimize any increase in weight.

Abstract: When a transmission signal is detected as having been changed from a high level to a low level, two transmission lines are connected for only a predetermined time through a diode by a first transistor and a second transistor. The diode is arranged such that its forward direction is from a high-side transmission line to a low-side transmission line. The diode turns on, when a potential of the high-side transmission line becomes higher than that of the low-side transmission line by ringing and a potential difference therebetween exceeds a forward drop voltage of the diode. As a result, a peak wave level of a positive side in the ringing is limited to the forward drop voltage of the diode.

Abstract: An inter-line switching element formed of a MOSFET is provided between a pair of signal lines. When the level of a differential signal changes from high to low, a control circuit turns on the FET for a fixed period thereby to suppress ringing by decreasing the impedance between the signal lines when the level of the differential signal transitions, and causing the energy of the distortion of the differential signal waveform to be absorbed by the on-resistance of the FET.

Abstract: A ringing suppression circuit for a communication circuit that performs communication through a transmission line includes a high side switch connected between a high potential reference point and a high side line of the transmission line, a low side switch connected between a low potential reference point and a low side line of the transmission line, and a ringing suppression section. The ringing suppression section turns on the high side switch based on a difference between a potential of the high side line and a potential applied to a control terminal of the high side switch. The ringing suppression section turns on the low side switch based on a difference between a potential of the low side line and potential applied to a control terminal of the low side switch.

Abstract: A receiving device includes a receiving circuit and an impedance control circuit. The receiving circuit receives a signal transmitted through a communication line. The impedance control circuit is coupled with the receiving circuit and has a detecting part. The detecting part detects a physical value of the signal and the physical value includes at least one of a voltage, an electric current, and an electric power. The impedance control circuit changes an input impedance based on the detected value so that a ringing of the signal is reduced.

Abstract: A slew rate regulation circuit varies a slew rate of a waveform of a voltage outputted to a DC motor through a N-channel MOSFET. The slew rate regulation circuit lowers a peak level by dispersing frequency components of switching noise, which develops in a frequency range higher than a frequency range determined by a carrier frequency.

Abstract: In a transmission device for differential communication, a first cathode-side element part is coupled between a first communication line and a cathode-side power supply line, a second cathode-side element part is coupled between a second communication line and the cathode-side power supply line, a first anode-side element part is coupled between the first communication line and an anode-side power supply line, and a second anode-side element part is coupled between the second communication line and the anode-side power supply line. A driving portion drives the element parts based on transmission data input from an outside. A target potential generating portion generates target potentials of the element parts based on potentials of the first communication line and the second communication line.

Abstract: An inter-line switching element formed of a MOSFET is provided between a pair of signal lines. When the level of a differential signal changes from high to low, a control circuit turns on the FET for a fixed period thereby to suppress ringing by decreasing the impedance between the signal lines when the level of the differential signal transitions, and causing the energy of the distortion of the differential signal waveform to be absorbed by the on-resistance of the FET.

Abstract: A signal receiver includes: a receiving circuit that receives a differential signal via a transmission line, which includes a pair of signal wires for transmitting the differential signal; and an impedance control circuit that controls an input impedance so as to reduce a common mode noise. The impedance control circuit includes a detection element for detecting at least one of a voltage, a current and an electric power of the common mode noise. The impedance control circuit controls the input impedance in accordance with change of the at least one of the voltages the current and the electric power of the common mode noise.

Abstract: A receiving device is provided capable of avoiding reception of unnecessary energy when a signal waveform actually changes on a receiving side. An impedance control circuit includes a sensing unit to sense one or more of a voltage, current, or power of a signal to be received by a receiving circuit. The impedance control unit varies an input impedance according to the change in the sensed one or more quantities so that the received signal will be reflected. Thus the excess energy of the signal is reflected and fed to any other receiving circuit achieving stable communications.

Abstract: A transmission apparatus for differential communication includes a driver bridge circuit and a pair of noise protection circuits. The driver bridge circuit includes four output devices that are independently connected between each of a pair of transmission lines and a power line or a ground line. Each noise protection circuit is provided to a corresponding transmission lines. Each noise protection circuit includes a ground potential detector and an impedance controller. The ground potential detector detects a potential of the corresponding transmission line with respect to the ground line. The impedance controller causes an impedance of the corresponding transmission line with respect to the ground line to become equal to an impedance of the other transmission line with respect to the ground line, when the detected potential becomes outside a predetermined potential range.