Patents by Inventor Dong Su Moon
Dong Su Moon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11569722Abstract: A sound vibration actuator includes: a casing having an internal space formed by an underside casing part, a side periphery casing part, and a top casing part; a coil part coupled to the top casing part in such a manner as to receive power from the outside; a magnet part disposed in the internal space of the casing and having a magnet and a weight; an elastic member whose one surface coupled to the magnet part; and a weight part coupled to the coil part. The sound vibration actuator can be varied in coupling ways of the components thereof to generate vibrations in a high frequency band as well as a low frequency band.Type: GrantFiled: December 5, 2019Date of Patent: January 31, 2023Assignee: MPLUS CO., LTD.Inventors: Seok Jun Park, Jun Kun Choi, Yeon Ho Son, Yong Tae Kim, Yong Jin Kim, Seung Wook Kim, Dong Su Moon
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Patent number: 11489427Abstract: A sound vibration actuator includes: a casing having an internal space formed by an underside casing part, a side periphery casing part, and a top casing part; a first vibration assembly disposed in the internal space of the casing; a second vibration assembly disposed between the first vibration assembly and the top casing part in such a manner as to be coupled to the top casing part; an elastic member whose one surface coupled to the first vibration assembly; and a third vibration assembly disposed between the first vibration assembly and the underside casing part in such a manner as to be coupled to the underside casing part. The sound vibration actuator includes at least three or more vibration assemblies disposed therein, thereby obtaining at least three or more resonance frequencies.Type: GrantFiled: December 5, 2019Date of Patent: November 1, 2022Assignee: MPLUS CO., LTD.Inventors: Jun Kun Choi, Yong Jin Kim, Yeon Ho Son, Yong Tae Kim, Dong Su Moon, Seok Jun Park, Tae Hoon Lee
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Patent number: 10986448Abstract: A sound vibration actuator includes: a casing having an internal space, a coil part coupled to the casing to receive power, a magnet part disposed in the casing, an elastic member whose one surface coupled to the magnet part, a substrate drawn from the internal space, and an external device-coupling part disposed on an outer peripheral surface of the casing to be coupled to an external device, wherein the casing has an underside casing part, a side periphery casing part, and a top casing part, the coil part is coupled to the top casing part, and the external device-coupling part includes a first coupling area coming into contact with a portion of the outer periphery of the side periphery casing part and second coupling areas extended from the first coupling area in a vertical direction to the first coupling area coupled to the external device.Type: GrantFiled: December 5, 2019Date of Patent: April 20, 2021Assignee: MPLUS CO., LTD.Inventors: Yong Jin Kim, Jun Kun Choi, Yeon Ho Son, Yong Tae Kim, Dong Su Moon, Seok Jun Park, Tae Hoon Lee
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Patent number: 10893348Abstract: A sound vibration actuator includes: a bracket and a casing for forming an internal space; a coil part coupled to the bracket in the internal space; a magnet part disposed around the coil part; an elastic member whose one surface coupled to the magnet part; a substrate fixed to the bracket and exposed outward from the internal space; and a substrate seating part disposed on the outer peripheral surface of the casing, wherein the substrate is disposed on top of the substrate seating part. The sound vibration actuator reduces the entire thickness thereof, while constantly maintaining an amount of vibration and generate vibrations in various frequency bands because the coil and the magnet are not fixed in the process where the vibrations are generated.Type: GrantFiled: July 11, 2019Date of Patent: January 12, 2021Assignee: MPLUS CO., LTD.Inventors: Yong Tae Kim, Yeon Ho Son, Dong Su Moon
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Publication number: 20200296516Abstract: A sound vibration actuator includes: a casing having an internal space, a coil part coupled to the casing to receive power, a magnet part disposed in the casing, an elastic member whose one surface coupled to the magnet part, a substrate drawn from the internal space, and an external device-coupling part disposed on an outer peripheral surface of the casing to be coupled to an external device, wherein the casing has an underside casing part, a side periphery casing part, and a top casing part, the coil part is coupled to the top casing part, and the external device-coupling part includes a first coupling area coming into contact with a portion of the outer periphery of the side periphery casing part and second coupling areas extended from the first coupling area in a vertical direction to the first coupling area coupled to the external device.Type: ApplicationFiled: December 5, 2019Publication date: September 17, 2020Inventors: Yong Jin KIM, Jun Kun CHOI, Yeon Ho SON, Yong Tae KIM, Dong Su MOON, Seok Jun PARK, Tae Hoon LEE
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Publication number: 20200295647Abstract: A sound vibration actuator includes: a casing having an internal space formed by an underside casing part, a side periphery casing part, and a top casing part; a first vibration assembly disposed in the internal space of the casing; a second vibration assembly disposed between the first vibration assembly and the top casing part in such a manner as to be coupled to the top casing part; an elastic member whose one surface coupled to the first vibration assembly; and a third vibration assembly disposed between the first vibration assembly and the underside casing part in such a manner as to be coupled to the underside casing part. The sound vibration actuator includes at least three or more vibration assemblies disposed therein, thereby obtaining at least three or more resonance frequencies.Type: ApplicationFiled: December 5, 2019Publication date: September 17, 2020Inventors: Jun Kun CHOI, Yong Jin KIM, Yeon Ho SON, Yong Tae KIM, Dong Su MOON, Seok Jun PARK, Tae Hoon LEE
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Publication number: 20200260190Abstract: A sound vibration actuator includes a casing having an internal space formed by an underside casing part, a side periphery casing part, and a top casing part, a coil part coupled to the top casing part in such a manner as to receive power from the outside, a magnet part disposed in the internal space of the casing, an elastic member whose one surface coupled to the magnet part, and a weight part coupled to the top casing part. The sound vibration actuator is configured to allow the weight part to be coupled to the part for generating vibrations, thereby controlling vibrations in a high frequency resonance band.Type: ApplicationFiled: December 10, 2019Publication date: August 13, 2020Inventors: Seok Jun PARK, Jun Kun CHOI, Yeon Ho SON, Yong Tae KIM, Yong Jin KIM, Seung Wook KIM, Dong Su MOON
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Publication number: 20200136489Abstract: A sound vibration actuator includes: a casing having an internal space formed by an underside casing part, a side periphery casing part, and a top casing part; a coil part coupled to the top casing part in such a manner as to receive power from the outside; a magnet part disposed in the internal space of the casing and having a magnet and a weight; an elastic member whose one surface coupled to the magnet part; and a weight part coupled to the coil part. The sound vibration actuator can be varied in coupling ways of the components thereof to generate vibrations in a high frequency band as well as a low frequency band.Type: ApplicationFiled: December 5, 2019Publication date: April 30, 2020Inventors: Seok Jun PARK, Jun Kun CHOI, Yeon Ho SON, Yong Tae KIM, Yong Jin KIM, Seung Wook KIM, Dong Su MOON
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Publication number: 20200076935Abstract: A sound vibration actuator includes: a bracket and a casing for forming an internal space; a coil part coupled to the bracket in the internal space; a magnet part disposed around the coil part; an elastic member whose one surface coupled to the magnet part; a substrate fixed to the bracket and exposed outward from the internal space; and a substrate seating part disposed on the outer peripheral surface of the casing, wherein the substrate is disposed on top of the substrate seating part. The sound vibration actuator reduces the entire thickness thereof, while constantly maintaining an amount of vibration and generate vibrations in various frequency bands because the coil and the magnet are not fixed in the process where the vibrations are generated.Type: ApplicationFiled: July 11, 2019Publication date: March 5, 2020Inventors: Yong Tae KIM, Yeon Ho SON, Dong Su MOON
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Patent number: 10468581Abstract: A method for driving a piezo actuator includes detecting consumption current by stepwise sweeping the frequency of an actuator driving signal to drive the piezo actuator vibrated in response to first and second vibration modes from a first reference frequency and determining a frequency at which the consumption current is inflected to be a first resonant frequency, detecting consumption current by stepwise sweeping the frequency of the actuator driving signal from a second reference frequency and determining a frequency at which the consumption current is inflected to be a second resonant frequency, and outputting an actuator driving signal in response to the first resonant frequency and the second resonant frequency.Type: GrantFiled: July 13, 2016Date of Patent: November 5, 2019Assignee: MPLUS CO., LTD.Inventors: Yeon Ho Son, Dong Su Moon, Kyung Su Park, Joon Choi, Jung Hyun Park
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Publication number: 20190319568Abstract: A linear vibration motor includes a bracket having a center on which a coil is seated, a casing coupled to the bracket and having an internal space formed therein, a stator disposed in the internal space of the casing to generate an electromagnetic force, an oscillator disposed around the stator, an elastic member adapted to vibrate the oscillator, a substrate seating part adapted to seat the casing thereonto, and a substrate having a first area adapted to locate one surface of the bracket thereon, a second area extended from the first area toward a side periphery of the casing, and a third area extended from the second area in such a manner as to be disposed on top of the substrate seating part.Type: ApplicationFiled: March 28, 2019Publication date: October 17, 2019Inventors: Yeon Ho SON, Yong Tae KIM, Dong Su MOON
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Patent number: 10284065Abstract: A horizontal linear vibration motor for securing the straightness of a coil spring and preventing a driving unit, such as a mass body, from axially rotating around the axis of a shaft within a housing due to the rotational property of the coil spring by providing a coil and a magnet for generating a force that enables the reciprocating motion of the driving unit including the mass body and an anti-rotation member provided in the driving unit to slide and come into contact with the housing.Type: GrantFiled: May 17, 2017Date of Patent: May 7, 2019Assignee: MPLUS CO., LTD.Inventors: Yong Tae Kim, Yeon Ho Son, Dong Su Moon
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Patent number: 10008658Abstract: A vibrator includes: a housing having an interior space; a vibrating member installed within the housing; a piezoelectric element installed on a top surface of the vibrating member; and space forming parts disposed to face side surfaces of the piezoelectric element, respectively, and forming a space in which a filler is provided, together with the side surfaces of the piezoelectric element.Type: GrantFiled: February 19, 2015Date of Patent: June 26, 2018Assignee: MPLUS CO., LTD.Inventors: Yeon Ho Son, Seung Hyeon Jeong, Joon Choi, Kyung Su Park, Sang Jin Lee, Jae Kyung Kim, Dong Su Moon
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Publication number: 20180097170Abstract: A vibrator includes: a housing having an interior space; a vibrating member having a plate shape, having both end portions fixedly installed within the housing, and including space forming parts disposed on both side surfaces thereof; a piezoelectric element fixedly installed on the vibrating member so as to be disposed inwardly of the space forming parts; and a weighting body disposed on the piezoelectric element and linked to the vibrating member to be vibrated, wherein the piezoelectric element is installed on the vibrating member so as to be disposed to be spaced apart from inner surfaces of the space forming parts at predetermined intervals, and the piezoelectric element includes a main electrode formed by an electrode pair and at least one preliminary electrode formed by an electrode pair and disposed to be spaced apart from the main electrode.Type: ApplicationFiled: December 5, 2017Publication date: April 5, 2018Inventors: Yeon Ho Son, Seung Hyeon Jeong, Joon Choi, Kyung Su Park, Sang Jin Lee, Jae Kyung Kim, Dong Su Moon
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Patent number: 9931671Abstract: There is provided a piezoelectric vibration actuator including: a flat cover member; a vibration portion including a vibration plate that is spaced apart from the cover member in parallel by a predetermined distance and a piezoelectric element that generates a vibration force by repeatedly expanding and contracting according to power applied from the outside; a weight portion disposed on the vibration portion to increase the vibration force of the piezoelectric element; and a binding member fixing the vibration portion and the weight portion. In addition, an enclosure portion is interposed between the weight portion and the vibration portion to enclose the center areas of the vibration portion, thereby making it possible to protect the piezoelectric element.Type: GrantFiled: May 8, 2015Date of Patent: April 3, 2018Assignee: MPLUS CO., LTD.Inventors: Joon Choi, Kyung Su Park, Dong Su Moon, Yeon Ho Son
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Publication number: 20170373575Abstract: A horizontal linear vibration motor for securing the straightness of a coil spring and preventing a driving unit, such as a mass body, from axially rotating around the axis of a shaft within a housing due to the rotational property of the coil spring by providing a coil and a magnet for generating a force that enables the reciprocating motion of the driving unit including the mass body and an anti-rotation member provided in the driving unit to slide and come into contact with the housing.Type: ApplicationFiled: May 17, 2017Publication date: December 28, 2017Inventors: Yong Tae KIM, Yeon Ho SON, Dong Su MOON
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Patent number: 9827594Abstract: There is provided a vibration generating device including: a housing having an internal space; a vibration member having one end fixedly attached to the housing; a piezoelectric element installed on the vibration member; and a mass body fixedly attached to the vibration member, wherein the vibration member includes an installation part on which the piezoelectric element is installed, and an extension part extended from at least one side surface of the installation part, and a maximum displacement portion of the vibration member is changed depending on a vibration mode.Type: GrantFiled: March 12, 2015Date of Patent: November 28, 2017Assignee: MPLUS CO., LTD.Inventors: Dong Su Moon, Yeon Ho Son, Kyung Su Park, Joon Choi, Hwa Young Oh
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Patent number: 9722168Abstract: There is provided a vibration generating apparatus including: an elastic member having both end portions fixed to a housing; a piezoelectric element installed on one surface of the elastic member; and a circuit board connected to the piezoelectric element, wherein the elastic member has support parts formed on both side surfaces of both end portions thereof and bent downwardly in order to be installed in the housing, and a portion of the circuit board passing between the support parts has a flat panel shape.Type: GrantFiled: January 6, 2015Date of Patent: August 1, 2017Assignee: MPLUS CO., LTD.Inventors: Dong Su Moon, Kyung Su Park, Sang Jin Lee, Jae Kyung Kim, Joon Choi, Yeon Ho Son
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Patent number: 9660172Abstract: There is provided a vibrator including: an elastic member of which both end portions are fixedly attached to a housing; a piezoelectric element installed on one surface of the elastic member; and a circuit board attached to the elastic member to be connected to the piezoelectric element, wherein an opening portion for a connection between the piezoelectric element and the circuit board is provided in the elastic member, and a step portion insertedly disposed in the opening portion is formed at the circuit board.Type: GrantFiled: November 21, 2014Date of Patent: May 23, 2017Assignee: MPLUS CO., LTD.Inventors: Dong Su Moon, Sang Jin Lee, Jae Kyung Kim, Kyung Su Park, Joon Choi
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Publication number: 20170047501Abstract: A method for driving a piezo actuator includes detecting consumption current by stepwise sweeping the frequency of an actuator driving signal to drive the piezo actuator vibrated in response to first and second vibration modes from a first reference frequency and determining a frequency at which the consumption current is inflected to be a first resonant frequency, detecting consumption current by stepwise sweeping the frequency of the actuator driving signal from a second reference frequency and determining a frequency at which the consumption current is inflected to be a second resonant frequency, and outputting an actuator driving signal in response to the first resonant frequency and the second resonant frequency.Type: ApplicationFiled: July 13, 2016Publication date: February 16, 2017Inventors: Yeon Ho SON, Dong Su MOON, Kyung Su PARK, Joon CHOI, Jung Hyun PARK