Abstract: A torque transmission shaft between end joints and a cylindrical member. Circlips are fitted in annular grooves formed in the end joints. The circlips abut and lock the outer collars. The outer collars each include a smaller diameter portion, and an end surface of the smaller diameter portion includes a plurality of hollow portions. The hollow portions allow a clearance between a serrated portion and the smaller diameter portion to communicate with the exterior of the outer collar. Air bubbles contained in an adhesive are allowed to escape out of the clearance through the hollow portions, and thus the clearance, is filled with the adhesive densely.

Abstract: An FRP drive shaft includes an end joint joined to at least one end of an FRP cylinder via an outer collar. The end joint includes a serrated portion on an outer periphery thereof. The outer collar includes a small-diameter collar portion and a large-diameter collar portion. The serrated portion is press-fitted into an inner periphery of the FRP cylinder and fixed to an inner periphery of the small-diameter collar portion. A gap between an inner periphery of the large-diameter collar portion and an outer periphery of the FRP cylinder is filled with an adhesive for fixing the inner periphery of the large-diameter collar portion and the outer periphery of the FRP cylinder to each other. An adhesive-accumulating space which partially increases a filling amount of the adhesive is formed between the inner periphery of the large-diameter collar portion and the outer periphery of the FRP cylinder.

Abstract: A torque transmission shaft is configured having increased coupling strength between end joints and a cylindrical member to achieve high transmission torque. Misalignment and disengagement of outer collars (connection members) is effectively prevented in the step of press fitting the torque transmission shaft to another component, such as a constant velocity joint. Circlips are fitted in annular grooves formed in the end joints. The circlips abut and lock the outer collars. The outer collars each include a smaller diameter portion, and an end surface of the smaller diameter portion includes a plurality of hollow portions. The hollow portions allow a clearance between a serrated portion and the smaller diameter portion to communicate with the exterior of the outer collar. Air bubbles contained in an adhesive are allowed to escape out of the clearance through the hollow portions, and thus the clearance is filled with the adhesive densely.

Abstract: An FRP drive shaft includes an end joint joined to at least one end of an FRP cylinder via an outer collar. The end joint includes a serrated portion on an outer periphery thereof. The outer collar includes a small-diameter collar portion and a large-diameter collar portion. The serrated portion is press-fitted into an inner periphery of the FRP cylinder and fixed to an inner periphery of the small-diameter collar portion. A gap between an inner periphery of the large-diameter collar portion and an outer periphery of the FRP cylinder is filled with an adhesive for fixing the inner periphery of the large-diameter collar portion and the outer periphery of the FRP cylinder to each other. An adhesive-accumulating space which partially increases a filling amount of the adhesive is formed between the inner periphery of the large-diameter collar portion and the outer periphery of the FRP cylinder.

Abstract: In a rolling bearing 21, a plurality of balls (rolling elements) 124 are arranged in an annular fashion, the balls 124 so arranged are held by inner and outer bearing rings 121, 122, some of the plurality of balls 124 are arranged along a pitch circle having a primary pitch circle diameter D1 so as to form a primary ball row 127, while the remaining of the plurality of balls are arranged along a pitch circle having a secondary pitch circle diameter D2 so as to form a secondary ball row 128, and the secondary pitch circle diameter D2 is made larger than the primary pitch circle diameter D1. The secondary ball row 128 is disposed radially outwards of the primary ball row 127 in such a manner as to overlap thereabove.

Abstract: In a rolling bearing 21, a plurality of balls (rolling elements) 124 are arranged in an annular fashion, the balls 124 so arranged are held by inner and outer bearing rings 121, 122, some of the plurality of balls 124 are arranged along a pitch circle having a primary pitch circle diameter D1 so as to form a primary ball row 127, while the remaining of the plurality of balls are arranged along a pitch circle having a secondary pitch circle diameter D2 so as to form a secondary ball row 128, and the secondary pitch circle diameter D2 is made larger than the primary pitch circle diameter D1. The secondary ball row 128 is disposed radially outwards of the primary ball row 127 in such a manner as to overlap thereabove.

Abstract: Described herein is an analog-digital broadcast shared receiving tuner for receiving therein a low-level broadcast signal of a digital broadcast assigned to a vacant channel of an analog broadcast and having first and second frequency conversion stages each comprised of a frequency mixer and a local oscillator. A variable attenuator capable of performing switching between predetermined attenuation and zero attenuation is electrically connected between an intermediate frequency amplifier for amplifying a first intermediate frequency signal outputted from the first frequency conversion stage and the frequency mixer of the second frequency conversion stage, which follows the intermediate frequency amplifier, so that the attenuation of the variable attenuator reaches zero attenuation upon reception of an analog broadcast and the attenuation thereof reaches predetermined attenuation upon reception of a digital broadcast.

Abstract: A high-frequency electronic device is disclosed which can be reduced in thickness without performance deterioration and increase of product price. The high-frequency electronic device comprises a coaxial type connector and a shielding case which is in the shape of a rectangular parallelepiped, the connector having a short diameter and a long diameter in a cross section thereof, the shielding case having a side face which has short sides and long sides. The connector is attached to the side face of the shielding case so that the direction of its short diameter and the direction of the short sides of the shielding case side face are parallel to each other. A filter having a predetermined nominal impedance is disposed within the shielding case, and a central conductor of the connector and the filter are connected with each other through an inductor which is for impedance matching of the connector and the filter.

Abstract: Feedback capacitors and first inductance means which constructs a parallel resonance circuit together with the feedback capacitors are provided, the first inductance means is comprised of second inductance means whose inductance equivalent value increases as the frequency becomes lower and third inductance means which is connected to the second inductance means in series, and an oscillation signal is outputted from both ends of the third inductance means.

Abstract: A digital television broadcast receiver comprising a digital signal demodulator, wherein the frequency of an intermediate frequency signal is made higher than the maximum frequency of any received signal, the intermediate frequency signal being demodulated by the digital signal demodulator, whereby interference attributable to a carrier signal from an oscillator of the demodulator is suppressed during demodulation.

Abstract: A double conversion television tuner capable of receiving analog and digital telecasts and having a reduced number of frequency conversion stages with fewer oscillators to minimize beat disturbances between local oscillation signals, the tuner being made up of fewer circuit components costing less than conventional tuners to manufacture. The inventive tuner comprises a first frequency conversion stage for converting in frequency a channel-select received signal to a first intermediate frequency signal to be output, a second frequency conversion stage for converting in frequency the first intermediate frequency signal to a second intermediate frequency signal to be output, and an analog and a digital demodulator for demodulating the second intermediate frequency signal.

Abstract: A digital broadcasting receiver tuner that demodulates excellently a digital signal by substantially reducing a second local oscillation signal that strays from a second frequency conversion stage to a first frequency conversion stage.