Abstract: An earphone including a speaker that outputs sounds to a uniaxial direction; a sound guide tube offset from a center of the speaker to and disposed on one side of a direction orthogonal to the uniaxial direction, the sound guide tube extending to a direction parallel to the uniaxial direction; and a housing accommodating the speaker and supporting a base end of the sound guide tube, wherein the housing is broadened from the base end to other side opposite to the one side, toward a location where the speaker is accommodated, and has an inclined surface that inclines at the broadened location, and a separation distance between a central axis of the speaker and a central axis of the sound guide tube is smaller than an internal radius of the sound guide tube.

Abstract: An earphone includes a sound guide tube extending in a uniaxial direction; a speaker offset to one side of a direction orthogonal to the uniaxial direction and on side of a base end of the sound guide tube; a wireless communication board on side of a back face of the speaker with respect to the sound guide tube; and a housing including a front part and rear part, the front part supporting the base end of the sound guide tube and expanding from the base end to the one side via an inclined surface inclining to the uniaxial direction, to accommodate the speaker, and the rear part expanding from the base end to other side of the orthogonal direction to accommodate the wireless communication board, and a distance between central axes of the speaker and the sound guide tube is smaller than an internal radius of the sound guide tube.

Abstract: An earphone includes a sound guide tube extending in a uniaxial direction; a speaker offset to one side of a direction orthogonal to the uniaxial direction and on side of a base end of the sound guide tube; a wireless communication board on side of a back face of the speaker with respect to the sound guide tube; and a housing including a front part and rear part, the front part supporting the base end of the sound guide tube and expanding from the base end to the one side via an inclined surface inclining to the uniaxial direction, to accommodate the speaker, and the rear part expanding from the base end to other side of the orthogonal direction to accommodate the wireless communication board, and a distance between central axes of the speaker and the sound guide tube is smaller than an internal radius of the sound guide tube.

Abstract: An earphone including a speaker that outputs sounds to a uniaxial direction; a sound guide tube offset from a center of the speaker to and disposed on one side of a direction orthogonal to the uniaxial direction, the sound guide tube extending to a direction parallel to the uniaxial direction; and a housing accommodating the speaker and supporting a base end of the sound guide tube, wherein the housing is broadened from the base end to other side opposite to the one side, toward a location where the speaker is accommodated, and has an inclined surface that inclines at the broadened location, and a separation distance between a central axis of the speaker and a central axis of the sound guide tube is smaller than an internal radius of the sound guide tube.

Abstract: An earphone (1) is provided that includes a first vibration plate (31) for vibration by a first piezoelectric element (32) and a cylindrically-shaped casing (2) for transmission of the vibration of the first vibration plate (31) to ear canal cartilage. The first vibration plate (31) is disposed inside the casing (2). The earphone (1) has a structure whereby an amount of sound leakage, which is due to transmission of the vibration of the first vibration plate (31) to the air, is low. The ear canal cartilage transmits sound to the eardrum of only one ear, thereby enabling localization of sound. The woofer (3) maintains sound pressure at low frequencies.

Abstract: Provided is an analysis device capable of obtaining sufficient sensitivity to a gas phase component, which is the analysis target, by a mass spectrometer even when a reactive gas is used as a carrier gas in evolved gas analysis. An analysis device 1 includes a heating device 3, a first carrier gas introduction device 4, a connecting conduit 5, a capillary tube 6, an oven 2, a mass spectrometer 7, and a second carrier gas introduction device 8. The second carrier gas introduction device 8 is configured to introduce helium, hydrogen and/or nitrogen into the connecting conduit 5.

Abstract: To respond to an n-bit digital signal, a speaker (1) is provided that includes an sound pressure generator (10) including 2i?1 piezoelectric elements (51, 52, and 53) for an i-th bit, and a total of 2n?1 stacked piezoelectric elements (51, 52, and 53). Due to divided vibration of the piezoelectric elements (51, 52, and 53), the speaker (1) has low directionality. Planar electrodes (80, 81, 82, and 83), to which voltage is applied, are provided between the piezoelectric elements (51, 52, and 53). By this means, all the piezoelectric elements can be driven using similar voltages, and high sound quality can be obtained without a problem of unit-to-unit differences between voltage sources.

Abstract: A digital speaker (1) is provided that is equipped with a piezoelectric element (4) including n electrodes (51, 52, 53) spaced apart from one another. Sound pressure is adjusted according to the surface area of the electrodes (51, 52, 53), and all the electrodes (51, 52, 53) can be driven by the same voltage. A speaker system is provided that uses the digital speaker (1) as a tweeter (11), or as all the speakers including a woofer (13). By this speaker system, earphones (8) are provided that are miniaturized and have high sound quality.

Abstract: A speaker which drives a dynamic speaker with one amplifier is provided which has an excellent frequency characteristic. This speaker 3 is provided with a dynamic speaker 2, a piezoelectric speaker 3, and one current amplifier 4 which drives both the dynamic speaker 2 and the piezoelectric speaker 3. Defining Zd as the rated impedance of the dynamic speaker 2 and Zp(?) as the impedance of the piezoelectric element 31, by stipulating that the frequency values ? at which Zd=Zp(?) are 20-50 kHz, a superior high-range frequency characteristic is achieved.

Abstract: To respond to an n-bit digital signal, a speaker (1) is provided that includes an sound pressure generator (10) including 2i-1 piezoelectric elements (51, 52, and 53) for an i-th bit, and a total of 2n?1 stacked piezoelectric elements (51, 52, and 53). Due to divided vibration of the piezoelectric elements (51, 52, and 53), the speaker (1) has low directionality. Planar electrodes (80, 81, 82, and 83), to which voltage is applied, are provided between the piezoelectric elements (51, 52, and 53). By this means, all the piezoelectric elements can be driven using similar voltages, and high sound quality can be obtained without a problem of unit-to-unit differences between voltage sources.

Abstract: An earphone (1) is provided that includes a first vibration plate (31) for vibration by a first piezoelectric element (32) and a cylindrically-shaped casing (2) for transmission of the vibration of the first vibration plate (31) to ear canal cartilage. The first vibration plate (31) is disposed inside the casing (2). The earphone (1) has a structure whereby an amount of sound leakage, which is due to transmission of the vibration of the first vibration plate (31) to the air, is low. The ear canal cartilage transmits sound to the eardrum of only one ear, thereby enabling localization of sound. The woofer (3) maintains sound pressure at low frequencies.

Abstract: A digital speaker (1) is provided that is equipped with a piezoelectric element (4) including n electrodes (51, 52, 53) spaced apart from one another. Sound pressure is adjusted according to the surface area of the electrodes (51, 52, 53), and all the electrodes (51, 52, 53) can be driven by the same voltage. A speaker system is provided that uses the digital speaker (1) as a tweeter (11), or as all the speakers including a woofer (13). By this speaker system, earphones (8) are provided that are miniaturized and have high sound quality.

Abstract: The present invention provides a speaker that excels in frequency response in a high sound range and that can be produced stably, and an earphone in which the speaker is used. Provided are: a speaker 1 provided with a woofer 2 supported by a mold 23, a tweeter 3 in which a piezoelectric element 31 is attached to a diaphragm 32, and three or more supports 33 protruding from the peripheral edge of the diaphragm 32, the supports 33 being secured to the mold 23 and forming a gap between the diaphragm 32 and the mold 23; and an earphone in which the speaker 1 is used. The sound of the woofer 2 can be propagated from the gap.

Abstract: Provided is an analysis device capable of obtaining sufficient sensitivity to a gas phase component, which is the analysis target, by a mass spectrometer even when a reactive gas is used as a carrier gas in evolved gas analysis. An analysis device 1 includes a heating device 3, a first carrier gas introduction device 4, a connecting conduit 5, a capillary tube 6, an oven 2, a mass spectrometer 7, and a second carrier gas introduction device 8. The second carrier gas introduction device 8 is configured to introduce helium, hydrogen and/or nitrogen into the connecting conduit 5.

Abstract: A sealed type lash adjuster (100A) includes a plunger (2A), a body (1) in which the plunger (2A) is inserted in a fitting manner, a first sealing means (5) provided between the plunger (2A) and the body (1), and a second sealing member (20A) that can prevent or suppress intrusion of an engine oil from an outside. The second sealing means (20A) seals a portion of the plunger (2A) exposed from the body and is arranged so as to cover a clearance (K) formed between an open end portion of the body and the plunger (2A). More specifically, the second sealing member (20A) has a one-end portion (20aA) and an other-end portion (20bA) as sealing parts having a function of preventing or suppressing intrusion of the engine oil from the outside.

Abstract: A sealed lash adjuster (100A) has a plunger (2), and a body (1A) accommodating the plunger. In addition, the sealed lash adjuster (100A) has a first seal member (5) on a sliding portion of the plunger (2), and has a second seal member (30) on a sliding portion of the body (1A) that faces the sliding portion. Specifically, the lash adjuster (100A) has the first seal member (5) on the sliding portion of the plunger (2) and the second seal member (30) on the opposing sliding portion of the body (1A), such that a space K formed between the first seal member (5) and the second seal member (30) expands when the plunger (2) is pressed inward, and the space K contacts when the plunger (2) protrudes outward.

Abstract: An earphone which fits into an ear is disclosed. The earphone includes an electroacoustic transducer for converting an audio signal into sound and a housing for holding the electroacoustic transducer. The housing includes a sound output unit for introducing the sound produced by the electroacoustic transducer into the ear canal of an ear when the housing is placed in the ear. The electroacoustic transducer is oriented so that it the sound in a direction which is transverse to the ear canal of the ear.

Abstract: A sealed type lash adjuster (100A) includes a plunger (2A), a body (1) in which the plunger (2A) is inserted in a fitting manner, a first sealing means (5) provided between the plunger (2A) and the body (1), and a second sealing member (20A) that can prevent or suppress intrusion of an engine oil from an outside. The second sealing means (20A) seals a portion of the plunger (2A) exposed from the body and is arranged so as to cover a clearance (K) formed between an open end portion of the body and the plunger (2A). More specifically, the second sealing member (20A) has a one-end portion (20aA) and an other-end portion (20bA) as sealing parts having a function of preventing or suppressing intrusion of the engine oil from the outside.

Abstract: A lash adjuster 100A includes a plunger 2, a body 1 in which the plunger 2 is inserted in a fitting manner, a first sealing member 5 provided between the plunger 2 and the body 1, and a second sealing member 20A that slidably seals a portion of the plunger 2 exposed out of the body 1, and that is arranged in a manner covering a clearance K provided between an open end portion of the body 1 and the plunger 2 in a state of being directly or indirectly fixed in close contact to the body 1, and a portion of the body 1 located on the side nearer to the open end portion thereof than the first sealing member 5 is provided with a communication hole 1a that communicates an inner wall surface of the body 1 with an outer wall surface thereof.

Abstract: A sealed lash adjuster (100A) has a plunger (2), and a body (1A) accommodating the plunger. In addition, the sealed lash adjuster (100A) has a first seal member (5) on a sliding portion of the plunger (2), and has a second seal member (30) on a sliding portion of the body (1A) that faces the sliding portion. Specifically, the lash adjuster (100A) has the first seal member (5) on the sliding portion of the plunger (2) and the second seal member (30) on the opposing sliding portion of the body (1A), such that a space K formed between the first seal member (5) and the second seal member (30) expands when the plunger (2) is pressed inward, and the space K contacts when the plunger (2) protrudes outward.