Patents by Inventor Yoshinori Katada

Yoshinori Katada 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).

  • Patent number: 10651715
    Abstract: The object of the present invention is to shorten the dimension in the axial direction to achieve compactness. The present invention has a movable element integrally provided with a magnet portion, weight portions, and shafts; a frame accommodating the movable element and enabling reciprocating motion thereof along a axial direction; a coil secured to the frame and drives the magnet portion along the axial direction; and elastic members exerting, on the movable element, elastic forces repelling the driving forces that act on the magnet portion. The shafts each extend toward a side along the axial direction. Tip ends of the shafts are configured as free ends. Bearings slidably supporting the shafts are secured to the frame. The weight portions have recessed portions that are formed along the axial direction. The shafts and the bearings are disposed in the spaces within the recessed portions.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: May 12, 2020
    Assignee: Nidec Copal Corporation
    Inventors: Yoshinori Katada, Shin Odajima, Shiori Ishii, Noboru Segawa
  • Patent number: 10566889
    Abstract: A linear vibration motor has a movable element including a magnet and a weight, and an elastic member are inserted into a frame. The frame supports the movable element so the movable element can freely slide axially; a coil fixed to the frame and drives the magnet axially; and an elastic member applying, to the movable element, an elastic force against the driving force of the magnet. The frame has a bottom surface plate with a bottom surface affixing the coil; an upper surface plate has an upper surface opposing the bottom surface; and a front surface plate facing the axially and supports the elastic member. The bottom surface plate has partial side surface portions that are respectively bent from both side edges of the bottom surface portion and in which an opening is formed in a central part of the partial side surface portions in the axial direction.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: February 18, 2020
    Assignee: Nidec Copal Corporation
    Inventor: Yoshinori Katada
  • Patent number: 10560010
    Abstract: A linear vibration motor comprises: a movable element that comprises a magnet portion, a weight portion, and a yoke; a frame for enclosing the movable element; a coil, secured to the frame, for applying a driving force to the magnet portion so as to cause the movable element to undergo reciprocating vibration along the axial direction; and an elastic member for applying, to the movable element, an elastic force that repels the driving force that is applied to the magnet portion, wherein: a magnetic material portion (a magnetic material piece) that extend along the direction of vibration of the movable element is provided on an inner surface of the frame, and the yoke has a raised portion near the magnetic material portion (the magnetic material piece).
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: February 11, 2020
    Assignee: Nidec Copal Corporation
    Inventors: Shin Odajima, Yoshinori Katada, Shiori Ishii, Noboru Segawa
  • Patent number: 10505436
    Abstract: A reduction in thickness and a reduction in size in the width direction are enabled while enjoying the benefits of enabling stabilized vibration and superior physical shock durability through the provision of stationary shafts. The linear vibration motor comprises: a movable element that is equipped with a magnet portion and a weight portion; a frame for enclosing the movable element; a coil that is secured to the frame, for driving the magnet portion along the axial direction; an elastic member for applying, to the movable element, an elastic force for repelling the driving force that acts on the magnet portion; and a pair of guide shafts that is arranged along an axial direction, having one end secured to a frame and the other end supporting slidably the movable element.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: December 10, 2019
    Assignee: Nidec Copal Corporation
    Inventor: Yoshinori Katada
  • Publication number: 20190314860
    Abstract: Provided is a linear vibration motor having a structure requiring less space and also having good responsiveness. This linear vibration motor is characterized by having a mover having weights affixed on the longitudinal end side of a pair of long magnets; a coil provided in a long shape in the longitudinal direction of the pair of magnets and driving and reciprocating the mover in the transverse direction by a magnetic action produced by the conduction of electricity; a base to which the coil is affixed; and an elastic member elastically deformed by the reciprocation of the mover.
    Type: Application
    Filed: October 10, 2017
    Publication date: October 17, 2019
    Applicant: NIDEC COPAL CORPORATION
    Inventor: Yoshinori KATADA
  • Patent number: 10424999
    Abstract: The present invention makes thinness or widthwise compactness possible, while exhibiting the advantages of obtaining stable vibrations and excellent impact strength, just as in a linear vibration motor equipped with a fixed shaft. A linear vibration motor equipped with: a needle equipped with a magnet and a spindle part; a frame for slidably supporting the needle in one axial direction; a coil for driving the magnet in the one axial direction, and affixed to the frame; and an elastic member for imparting an elastic force to the needle in opposition to the driving force imparted on the magnet. Therein, the needle is equipped with a pair of shaft parts which project in opposite directions in the one axial direction, and the frame is equipped with bearings for slidably supporting the pair of shaft parts.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: September 24, 2019
    Assignee: Nidec Copal Corporation
    Inventor: Yoshinori Katada
  • Patent number: 10381909
    Abstract: Disclosed is a linear vibration motor comprising a movable element that is equipped with a magnet and weights; a coil for applying a driving force on the magnet through the application of an electric current; a frame, wherein the coil is secured; a shaft, borne on or secured by the frame, for supporting the movable element so as to be able to vibrate along the axial direction; and coil springs, disposed between the movable element and the frame, for elastically supporting the vibration of the movable element along the axial direction, on both sides of the movable element in the direction of vibration, wherein the directions of winding of the coil springs are set so as to prevent rotational vibration, around the shaft, of the movable element that is vibrating reciprocatingly along the axial direction.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: August 13, 2019
    Assignee: Nidec Copal Corporation
    Inventors: Shiwori Ishii, Masaji Yoshimura, Toshiyuki Aoki, Yoshinori Katada
  • Patent number: 10376919
    Abstract: The present invention guides the linear vibrations of a needle, obtains stable vibrations and exhibits excellent impact strength, and makes thinness or widthwise compactness possible. A linear vibration motor equipped with: a needle equipped with a magnet and a spindle part; a frame for slidably supporting the needle in one axial direction; a coil for driving the magnet in the one axial direction, and affixed to the frame; and an elastic member for imparting an elastic force to the needle in opposition to the driving force imparted on the magnet. Furthermore, a guide groove extending in the one axial direction is provided in the needle or the frame, and a rolling body for rolling and being guided by the guide groove is provided in the other of the needle and the frame.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: August 13, 2019
    Assignee: Nidec Copal Corporation
    Inventor: Yoshinori Katada
  • Patent number: 10376920
    Abstract: This abstract replaces all prior versions of abstract in the application. The linear vibration motor comprises a movable element that is equipped with a magnet portion and a weight portion; a frame that contains the movable element; a coil that is secured to the frame and that drives the magnet portion along an axial direction; an elastic member that is disposed within the frame and that applies, to the movable element, an elastic force that repels the driving force that is applied by the magnet portion; and a guide shaft 8 that is borne on the frame and that guides reciprocating motion of the movable element along the axial direction, wherein: the elastic member rotationally biases the movable element in one direction around the guide shaft 8, and the frame comprises a slide bearing portion (a slide plate) for bearing slidably a portion of the rotationally biased movable element.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: August 13, 2019
    Assignee: Nidec Copal Corporation
    Inventors: Yoshinori Katada, Shin Odajima, Shiori Ishii, Noboru Segawa
  • Patent number: 10355573
    Abstract: A linear vibration motor comprises a frame wherein a coil is secured, and a movable element that comprises a magnet portion and a weight portion, and which is supported elastically within the frame, wherein the movable element comprises guide shafts that protrude in both axial-direction sides; the frame comprises a bottom frame that has a bottom plate portion along the axial direction, and a pair of side frames that have side plate portions and that face the axial direction; the side frame has a bearing retaining portion for holding a bearing that bears a guide shaft, and a connecting portion for connecting the bearing retaining portion to the side plate portion; the bearing retaining portion and the connecting portion are structured integrally with the side plate portion; and the bottom plate portion has an opening portion with which the bearing retaining portion engages.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: July 16, 2019
    Assignee: Nidec Copal Corporation
    Inventor: Yoshinori Katada
  • Patent number: 10270326
    Abstract: The present invention is capable of increasing the thinness of a linear vibration motor equipped with a fixed shaft. The linear vibration motor is equipped with: a frame; one fixed shaft extending in one axial direction and affixed to the frame; a drive unit for driving a magnet in the one axial direction, and equipped with a coil affixed to the frame and the magnet, which is positioned so as to be parallel to the fixed shaft; a needle which is slidably supported in the one direction by the fixed shaft, and is equipped with the magnet and a spindle part connected to the magnet; and an elastic member for imparting an elastic force to the needle in opposition to the driving force of the drive unit, and positioned so as not to be coaxial with the fixed shaft.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: April 23, 2019
    Assignee: NIDEC COPAL CORPORATION
    Inventor: Yoshinori Katada
  • Publication number: 20180281020
    Abstract: The linear vibration motor comprises a movable element that is equipped with a magnet portion and a weight portion; a frame that contains the movable element; a coil that is secured to the frame and that drives the magnet portion along an axial direction; an elastic member that is disposed within the frame and that applies, to the movable element, an elastic force that repels the driving force that is applied by the magnet portion; and a guide shaft 8 that is borne on the frame and that guides reciprocating motion of the movable element along the axial direction, wherein: the elastic member rotationally biases the movable element in one direction around the guide shaft 8, and the frame comprises a slide bearing portion (a slide plate) for bearing slidably a portion of the rotationally biased movable element.
    Type: Application
    Filed: September 27, 2016
    Publication date: October 4, 2018
    Applicant: Nidec Copal Corporation
    Inventors: Yoshinori KATADA, Shin ODAJIMA, Shiori ISHII, Noboru SEGAWA
  • Publication number: 20180278136
    Abstract: A linear vibration motor comprises: a movable element that comprises a magnet portion, a weight portion, and a yoke; a frame for enclosing the movable element; a coil, secured to the frame, for applying a driving force to the magnet portion so as to cause the movable element to undergo reciprocating vibration along the axial direction; and an elastic member for applying, to the movable element, an elastic force that repels the driving force that is applied to the magnet portion, wherein: a magnetic material portion (a magnetic material piece) that extend along the direction of vibration of the movable element is provided on an inner surface of the frame, and the yoke has a raised portion near the magnetic material portion (the magnetic material piece).
    Type: Application
    Filed: September 27, 2016
    Publication date: September 27, 2018
    Applicant: Nidec Copal Corporation
    Inventors: Shin ODAJIMA, Yoshinori KATADA, Shiori ISHII, Noboru SEGAWA
  • Publication number: 20180219465
    Abstract: The object of the present invention is to shorten the dimension in the axial direction to achieve compactness. The present invention has a movable element integrally provided with a magnet portion, weight portions, and shafts; a frame accommodating the movable element and enabling reciprocating motion thereof along a axial direction; a coil secured to the frame and drives the magnet portion along the axial direction; and elastic members exerting, on the movable element, elastic forces repelling the driving forces that act on the magnet portion. The shafts each extend toward a side along the axial direction. Tip ends of the shafts are configured as free ends. Bearings slidably supporting the shafts are secured to the frame. The weight portions have recessed portions that are formed along the axial direction. The shafts and the bearings are disposed in the spaces within the recessed portions.
    Type: Application
    Filed: July 27, 2016
    Publication date: August 2, 2018
    Applicant: Nidec Copal Corporation
    Inventors: Yoshinori KATADA, Shin ODAJIMA, Shiori ISHII, Noboru SEGAWA
  • Publication number: 20180183313
    Abstract: A reduction in thickness and a reduction in size in the width direction are enabled while enjoying the benefits of enabling stabilized vibration and superior physical shock durability through the provision of stationary shafts. The linear vibration motor comprises: a movable element that is equipped with a magnet portion and a weight portion; a frame for enclosing the movable element; a coil that is secured to the frame, for driving the magnet portion along the axial direction; an elastic member for applying, to the movable element, an elastic force for repelling the driving force that acts on the magnet portion; and a pair of guide shafts that is arranged along an axial direction, having one end secured to a frame and the other end supporting slidably the movable element.
    Type: Application
    Filed: June 30, 2016
    Publication date: June 28, 2018
    Applicant: Nidec Copal Corporation
    Inventor: Yoshinori KATADA
  • Publication number: 20170354992
    Abstract: A linear vibration motor has a cover body made from a magnetic material having a planar inner surface (supporting face); a movable element that comprises a magnet and a weight, and that vibrates in the axial direction along the inner surface; an elastic member elastically repelling the vibration of the movable element; and a coil, secured in relation to the cover body, and wherein a winding part that is perpendicular, in respect to the axial direction, to a gap between the movable element and the cover body, where supporting portions for supporting the movable element through the elastic member are provided on both axial-direction end portions on the cover body.
    Type: Application
    Filed: January 15, 2016
    Publication date: December 14, 2017
    Applicant: Nidec Copal Corporation
    Inventor: Yoshinori KATADA
  • Publication number: 20170317568
    Abstract: Disclosed is a linear vibration motor comprising a movable element that is equipped with a magnet and weights; a coil for applying a driving force on the magnet through the application of an electric current; a frame, wherein the coil is secured; a shaft, borne on or secured by the frame, for supporting the movable element so as to be able to vibrate along the axial direction; and coil springs, disposed between the movable element and the frame, for elastically supporting the vibration of the movable element along the axial direction, on both sides of the movable element in the direction of vibration, wherein the directions of winding of the coil springs are set so as to prevent rotational vibration, around the shaft, of the movable element that is vibrating reciprocatingly along the axial direction.
    Type: Application
    Filed: April 24, 2017
    Publication date: November 2, 2017
    Applicant: Nidec Copal Corporation
    Inventors: Shiwori ISHII, Masaji YOSHIMURA, Toshiyuki AOKI, Yoshinori KATADA
  • Publication number: 20170288523
    Abstract: A linear vibration motor has a movable element including a magnet and a weight, and an elastic member are inserted into a frame. The frame supports the movable element so the movable element can freely slide axially; a coil fixed to the frame and drives the magnet axially; and an elastic member applying, to the movable element, an elastic force against the driving force of the magnet. The frame has a bottom surface plate with a bottom surface affixing the coil; an upper surface plate has an upper surface opposing the bottom surface; and a front surface plate facing the axially and supports the elastic member. The bottom surface plate has partial side surface portions that are respectively bent from both side edges of the bottom surface portion and in which an opening is formed in a central part of the partial side surface portions in the axial direction.
    Type: Application
    Filed: August 31, 2015
    Publication date: October 5, 2017
    Applicant: Nidec Copal Corporation
    Inventor: Yoshinori KATADA
  • Publication number: 20170279343
    Abstract: A linear vibration motor comprises a frame wherein a coil is secured, and a movable element that comprises a magnet portion and a weight portion, and which is supported elastically within the frame, wherein the movable element comprises guide shafts that protrude in both axial-direction sides; the frame comprises a bottom frame that has a bottom plate portion along the axial direction, and a pair of side frames that have side plate portions and that face the axial direction; the side frame has a bearing retaining portion for holding a bearing that bears a guide shaft, and a connecting portion for connecting the bearing retaining portion to the side plate portion; the bearing retaining portion and the connecting portion are structured integrally with the side plate portion; and the bottom plate portion has an opening portion with which the bearing retaining portion engages.
    Type: Application
    Filed: March 21, 2017
    Publication date: September 28, 2017
    Applicant: Nidec Copal Corporation
    Inventor: Yoshinori KATADA
  • Patent number: 9742240
    Abstract: A compact motor which avoids peeling and cracking of the circuit board wiring pattern upon bending the printed circuit board. A projecting part (13), projecting toward the bottom side of the bracket (5), is provided on the back surface (5c) of the bracket (5) of a compact motor. A board insertion groove (S) is formed between the projecting part (13) and the back surface (5c). The flexible printed circuit board (10), inserted inside the board insertion groove (S), abuts the projecting part (13) and is bent facing the back. When the printed circuit board (10) is inserted into the board insertion groove (S) and bent, the printed circuit board (10) is in a state abutting the curved part (13a) of the projecting part (13), so the curved part (13a) of the projecting part (13) regulates bending and, by doing this, stabilizes bending of the flexible printed circuit board (10).
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: August 22, 2017
    Assignee: NIDEC COPAL CORPORATION
    Inventor: Yoshinori Katada