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US 6,188,773 B1Granted
Waterproof type microphone
AssigneeKabushiki Kaisha Audio-Technica
InventorsTakashi Murata, Hiroshi Akino
Life of this patent
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AssigneeKabushiki Kaisha Audio-Technica
InventorsTakashi Murata, Hiroshi Akino
Estimating the term…
In order to equalize the pressure between the interior of an unit accommodating chamber and the outside of a mike casing without reducing a waterproof performance and an acoustic characteristic, there is provided a waterproof type microphone, which includes a mike casing 11 provided with an unit accommodating chamber having a sound receiving opening portion 141; a mike unit accommodated in the unit accommodating chamber 14; and a waterproof membrane 19 airtightly mounted on the sound receiving opening portion 141; the waterproof microphone further including an venting hole 21 formed in the mike casing 11 to cause the unit accommodating chamber to be communicated with outside of the mike casing 11 and a pressure equalizing membrane 22 mounted on the venting hole 21.
A waterproof type microphone including a mike casing provided with a unit accommodating chamber having a sound receiving opening portion, said unit accommodating chamber having an interior, exterior and side surface, a mike unit accommodated in said unit accommodating chamber, and a waterproof membrane airtightly mounted on said sound receiving opening portion, the waterproof microphone further including a first venting opening formed in a side wall of the unit accommodating chamber, said venting opening bringing said unit accommodating chamber into communication with the outside of the mike casing, and a water non-permeability venting membrane provided to said first venting opening.
A waterproof type microphone including a microphone unit, a casing having a unit accommodating chamber for accommodating said microphone unit, front and back sound receiving opening portions disposed at front and back surfaces of said unit accommodating portion, respectively, a microphone unit disposed within the hollow interior of said casing, waterproof membranes airtightly disposed at said front and back sound receiving opening portions, respectively, said waterproof type microphone including a first vent opening formed at a side wall of the unit accommodating chamber of said casing so as to permit communication between an exterior and an interior of the unit accommodating chamber, and water non-permeable vent membrane provided at said first vent opening inside or outside of said unit accommodating unit.
A waterproof type microphone including a microphone unit having a front acoustic terminal and a rear acoustic terminal, a tubular case for covering said microphone unit, a casing having a unit accommodating chamber for accommodating said tubular case and a front opening for receiving sound, waterproof membranes or films for covering in said casing the front and rear acoustic terminals of said microphone unit, respectively, stainless meshes disposed between said waterproof membranes or films and the front and rear acoustic terminals of said microphone unit, said waterproof-type microphone including a venting opening formed at a side wall of the unit accommodating chamber of said casing, a second vent opening formed at a side wall of said tubular case and corresponding to said first vent opening so that exterior of the unit accommodating portion is brought into communication with interior of the unit accommodating chamber, and water non-permeable vent membrane provided at said first vent opening bringing the exterior of the unit accommodating chamber into connection with the interior of the unit accommodating chamber, and the water non-permeable vent membrane provided at said vent opening inside or outside of said unit accommodating chamber.
A waterproof type microphone comprising of a microphone unit having a circuit board, a tubular case for covering said microphone unit, a casing having a front surface, a rear surface, a unit accommodating chamber between said front and rear surfaces for accommodating said microphone unit, a front sound receiving opening portion bored in said front surface, and a rear sound receiving opening portion partially bored in said rear surface, the casing having a small diameter portion extending from substantially an intermediate portion, a lid for casing mounted on said front surface for covering said front surface, said microphone unit, and an outer peripheral surface of the small diameter portion of said casing, first and second waterproof membrane member each having a support ring and a waterproof membrane supported by said support ring thereon, the first waterproof membrane member being mounted between said tubular case and said lid for casing, the second waterproof membrane member being mounted between a back face of said microphone and the rear surface of said casing, a first O ring mounted between a front surface of said tubular case and said first waterproof membrane member, a second O ring mounted between the rear surface of said casing and said second waterproof membrane member, a third O shaped ring mounted between the substantially intermediate portion of said casing and a back surface of said lid for casing, a first vent opening bored in the side surface of the unit accommodating chamber of said casing, a second vent opening bored in a side surface of said tubular casing, and water non-permeable vent membrane provided at said first vent opening interior or exterior of said unit accommodating chamber, whereby exterior of the unit accommodating chamber is brought into communication with interior of the unit accommodating chamber.
Dependencies are inferred from the claim text.
No related US applications are recorded in the indexed filing history.
Details of transducers, loudspeakers or microphones: using digitally weighted transducing elements
Details of transducers, loudspeakers or microphones: special adaptations for subaqueous use, e.g. for hydrophone
Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers
Term ended 27 Aug 2019 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to a waterproof type microphone, and more specifically, to a waterproof type microphone which enables equivalent pressures between the interior of an unit accommodating chamber and the outside of a casing without impairment of the waterproof function.
A headset type microphone is worn on the head of a user for a long period of time. For the reason, the headset microphone is different from a hand-held type microphone that it is often suffered from liquid such as sweat and spittle of the user. In addition, the headset microphone is often submerged in water of for example, swimming pool by sports instructors. As a result, such the liquid sometimes adversely affects the headset microphone.
Besides the headset microphone, for example, “Karaoke” (or orchestra) microphone is used in entertainment facilities where beverages such as beer and juice are served. For the reason, such the microphone is suffered from the beverage dashed thereon, and erroneous dropping thereof into the beverage.
FIG. 1 is a sectional view showing a waterproof type microphone according to one embodiment of the present invention.
FIG. 2 is an exploded assembly view of the above-mentioned embodiment.
FIG. 3 is a sectional view showing a support ring of a waterproof membrane according to the above-mentioned embodiment.
The present invention will be described in detail hereinafter with reference to embodiments shown in the drawings. Referring to FIG. 1 (a sectional view) and FIG. 2 (an exploded assembly view), a waterproof type microphone 10 according to this embodiment is for a headset and comprises a mike casing 11 mounted on a support arm 4 of the headset.
In this embodiment, the mike casing 11 comprises a casing body 12 mounted on the end of the support arm 4, and a casing cover 13 secured to the back side (the upper surface side in FIG. 2) of the casing body 12 by a fastening screw. The casing cover 13 is detachably secured to the back side of the casing body 12 so as to facilitate the wiring works in the casing body 12, and the casing cover 13 has a seal member 131 such as rubber mounted on the inner surface thereof.
The casing cover 13 has an unit accommodating portion disposed at end thereof and formed in a cylindrical shape. The unit accommodating portion 4 has openings, of which one end forms a front sound receiving opening portion 141, which is directed to the mouth of a speaker, and the front sound receiving opening portion 141 has a case ring 121 which fit therewith. The case ring 121 forms a portion of the case body 12.