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公开(公告)号：US20210127209A1
公开(公告)日：2021-04-29
申请号：US17081139
申请日：2020-10-27
申请人： EM-TECH Co., Ltd.
发明人： Ji Hoon Kim , Young Woo Kim , Yong Ju Ji , Young Seok Noh , Chan Ho Jeong
摘要： Disclosed is a bonding structure of a diaphragm for a receiver and a method thereof. The diaphragm of the receiver includes a center diaphragm and a side diaphragm elastically supporting the center diaphragm, formed by heat and pneumatic pressure, and bonded to the center diaphragm. At least one of the center diaphragm and the side diaphragm is formed of a thermoplastic elastomer film.
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公开(公告)号：US11212616B2
公开(公告)日：2021-12-28
申请号：US17081139
申请日：2020-10-27
申请人： EM-TECH Co., Ltd.
发明人： Ji Hoon Kim , Young Woo Kim , Yong Ju Ji , Young Seok Noh , Chan Ho Jeong
摘要： Disclosed is a bonding structure of a diaphragm for a receiver and a method thereof. The diaphragm of the receiver includes a center diaphragm and a side diaphragm elastically supporting the center diaphragm, formed by heat and pneumatic pressure, and bonded to the center diaphragm. At least one of the center diaphragm and the side diaphragm is formed of a thermoplastic elastomer film.
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公开(公告)号：US11564026B2
公开(公告)日：2023-01-24
申请号：US17363922
申请日：2021-06-30
申请人： EM-TECH Co., Ltd.
发明人： Yong Ju Ji , Jun Hee Han , Young Woo Kim
摘要： Provided is an earphone having a pressure equilibrium structure capable of preventing a decrease in acoustic characteristics or sound pressure, while having a structure capable of achieving equilibrium within an ear canal. The earphone includes a receiver including a frame, a magnetic circuit, a voice coil, and a diaphragm, a front housing surrounding a front and a side surface of the receiver and including a sound tube, a rear housing attached to a rear of the receiver and coupled to the front housing, and a duct located between the diaphragm and the sound tube. An acoustic path through which sound is emitted is formed from the receiver to an end of the sound tube. The front housing or the rear housing includes a leakage hole. An inner end of the duct is connected to the acoustic path. An outer end of the duct is connected to the leakage hole.
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公开(公告)号：US20220038810A1
公开(公告)日：2022-02-03
申请号：US17388139
申请日：2021-07-29
申请人： EM-TECH Co., Ltd.
发明人： Yong Ju Ji , Young Woo Kim
摘要： A receiver having a pressure equilibrium structure includes a magnetic circuit including a yoke, a permanent magnet coupled to the yoke, and a top plate attached to the permanent magnet, a voice coil configured to vibrate by mutual electromagnetic force with the magnetic circuit, a diaphragm allowing the voice coil to be attached thereto and vibrated by the voice coil to generate sound, and a protector coupled to an upper surface of the diaphragm and surrounding an outer side of the magnetic circuit with a gap from an outer periphery of the magnetic circuit, wherein the protector has a hole communicating with a gap portion with the magnetic circuit and an air path is formed by the hole of the protector and the gap between the magnetic circuit and the protector.
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公开(公告)号：US20220007101A1
公开(公告)日：2022-01-06
申请号：US17363922
申请日：2021-06-30
申请人： EM-TECH Co., Ltd.
发明人： Yong Ju Ji , Jun Hee Han , Young Woo Kim
摘要： Provided is an earphone having a pressure equilibrium structure capable of preventing a decrease in acoustic characteristics or sound pressure, while having a structure capable of achieving equilibrium within an ear canal. The earphone includes a receiver including a frame, a magnetic circuit, a voice coil, and a diaphragm, a front housing surrounding a front and a side surface of the receiver and including a sound tube, a rear housing attached to a rear of the receiver and coupled to the front housing, and a duct located between the diaphragm and the sound tube. An acoustic path through which sound is emitted is formed from the receiver to an end of the sound tube. The front housing or the rear housing includes a leakage hole. An inner end of the duct is connected to the acoustic path. An outer end of the duct is connected to the leakage hole.
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