Kyoto-shi, Japan
Kyoto-shi, Japan

Nidec Corporation is a Japanese manufacturer of electric motors. Their products are found in hard-disk drives, electric appliances, automobiles and commercial and manufacturing equipment.The company has the largest global market share for the tiny spindle motors that power hard-disk drives.The two product groups with the largest sales are hard-disk drive motors and electrical and optical components with 21.5% and 30% of sales, repectively.As of 2015, the company has 230 subsidiaries companies located across Japan, Asia, Europe and the Americas. Nidec is listed on the first section of the Tokyo Stock Exchange and is a constituent of the TOPIX 100 stock market index.The company was number 42 on the 2005 edition of the Businessweek Infotech 100 list. Also Nidec was featured on the 2014 Forbes World’s Most Innovative Companies list. Wikipedia.


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Patent
Nidec Corporation | Date: 2017-02-01

A valve device is provided, so that a minute flow amount of fluid is capable of being set and a flow passage is prevented from being disturbed by a foreign matter. Specifically, the valve device includes: a drive source; a turning member, being driven and turned by the driving source; a valve body, being fixed to the turning member in a state that an end face of the valve body and an end face of the turning member in an axial direction are contacted with each other, and the valve body is integrally turned with the turning member; and a valve seat, being sliding contacted with an end face of the valve body opposite to the end face of the valve body contacting with the turning member. The valve seat has at least one outflow hole for fluid passing through the valve device, and the valve body has a throttle part which is a minute hole that communicates with the outflow hole in a part of a turning angle of the valve body. A flow passage has an opening part which is provided between opposed faces of the turning member and the valve body, so that the throttle part is communicated with an inflow hole for the fluid and so that inflow of an individual matter having a size which is unable to pass through the throttle part is shielded.


Patent
Nidec Corporation | Date: 2017-03-08

The present invention provides a geared motor in which a motor lead can be routed within a case to a position set apart from a motor, and a damper device. In the geared motor (10) that is used in the damper device, the case (3) is provided with a motor lead passage (30) that extends in the Y-direction through a position flanked, in the Z-direction, by a side plate part (321) of a case trunk part (32) and the rotation axis (L68) of a driving gear (68) that is included in a gear train (65). It is therefore possible, with the Z-direction positions of a plurality of motor leads (7) being defined, to extend the motor leads (7) in the Y-direction. The Z-direction dimension of the geared motor (10) can then be reduced because the motor leads (7) will then partially overlap the drive gear (68) in the motor lead passage (30) as viewed from the X-direction.


Patent
Nidec Corporation | Date: 2017-03-08

Provided is a damper apparatus with which it is possible to suppress abnormal sounds immediately after the locking of gears has been released. Specifically, in a first lock mechanism (81) of the damper apparatus, a first arcuate outer-peripheral part (686) peripherally adjacent to a teeth-missing gear (682) in a drive gear (68) enters a portion of a plurality of teeth (694) in which some teeth are narrowed in the axial direction to restrain a sector gear (69), the plurality of teeth (694) being meshed with the drive gear (68) in the sector gear (69). In the tooth (682c) nearest to the first arcuate outer-peripheral part (686) in the teeth-missing gear (682), the curvature of a first tooth flank (682c1) on the side opposite the first arcuate outer-peripheral part (686) is less than the curvature of a second tooth flank (682c2) on the first arcuate outer peripheral part (686) side, and the tooth (682c) has a curved surface continuous from the first tooth flank (682c1) to the second tooth flank (682c2).


Patent
Nidec Corporation | Date: 2017-01-25

The present application provide a linear actuator; in which a magnetic drive mechanism is employed for driving a movable element, and a resonance of the movable element can effectively be suppressed even in the case where a spring member is connected to the movable element. Specifically to describe, a linear actuator 1 includes: a stator 2, a movable element 6, a spring member 8 connected to the movable element 6 and the stator 2, and a magnetic drive mechanism 5 for driving the movable element 6 in a direction of an axis line L. Moreover, a gel damper member 9 made from silicone gel and the like is placed at least, at either one of a position on the axis line L and a group of positions surrounding the axis line L, between the stator 2 and the movable element 6. For example, the gel damper member 9 is placed at a position sandwiched between a base 4 facing the movable element 6 in the stator 2, and the movable element 6 in the direction of the axis line L. Among the gel damper member 9, a first gel damper member 91 is located on the axis line L, and meanwhile a plurality of second gel damper members 92 are placed in such a way as to surround the axis line L.


Patent
Nidec Corporation | Date: 2017-04-05

The motor of the invention includes the resin sealing member which covers a stator and a circuit board. The stator includes a stator core for winding a driving coil through an insulation member, and a terminal pin secured to the insulation member. The insulation member includes a press fitting portion for pressing and securing a portion of the terminal pin on a side of a second direction, whereas a portion of the terminal pin on a side of a first direction is soldered to the circuit board. A stopper portion is formed on a second direction end of the terminal pin. The stopper portion contacts a surface of the press fitting portion in the second direction to prevent the terminal pin from falling off in the first direction.


Patent
Nidec Corporation | Date: 2017-01-04

A bearing (1) includes a cylindrical inner race (10); a plurality of rollers (13) arranged along an outer circumferential surface of the inner race (10); and a first cage (11) arranged radially outside of the inner race (10) to hold the rollers (13) on an outer circumferential portion of the inner race (10). The first cage (11) includes a plurality of first columnar portions (110) each of which extends in an axial direction, and a first ring (111) arranged to join axially upper end portions of the first columnar portions (110) to one another. The inner race (10) and the first cage (11) are arranged to rotate relative to each other. Each roller (13) is arranged between adjacent ones of the first columnar portions (110). A portion of each roller (13) is arranged radially outward of the first columnar portions (110). A second cage (12) is arranged between the first ring (111) and the inner race (10) and between the first columnar portions (110) and the inner race (10). The second cage (12) is defined by a solid lubricant.


Patent
Nidec Corporation | Date: 2017-01-11

The present invention provides a card processing system capable of causing the light-emitting unit of a card reader to shine using various luminous colors and light-emission methods corresponding to customer needs, even when the firmware stored in the control unit of the card reader is shared. A card processing system (10) is provided with a card reader (1) and a host control section (11) for controlling the card processing system (10), the card reader (1) being provided with a card insertion part having a light-emitting part (15) capable of emitting light in a plurality of colors and a control section (3). The control section (3), connected to the host control section (11), performs light-emission control for controlling the luminous color and light-emission method of the light-emitting unit (15). A host-side light-emission program is stored in the host control section (11), the host-side light emission program defining a combination of luminous colors and light-emission methods of the light-emitting part (15) and performing light-emission control, and the host control section (11) presets a light-emission program in the control section (3) on the basis of the host-side light-emission program. The control section (3) performs light-emission control on the basis of the preset light-emission program.


Patent
Nidec Corporation | Date: 2017-02-22

Provided is a printed circuit board having a breakdown detection pattern formed thereon for preventing illicit acquisition of sensitive data, the printed circuit board being configured so that false detection of a disconnection or a short in the breakdown detection pattern can be prevented. The printed circuit board (7) comprises a breakdown detection pattern layer (32) wherein a breakdown detection pattern is formed for detecting a disconnection and/or a shorting thereof, a first pattern layer (31) disposed more to a Y1 direction side than the breakdown detection pattern layer (32), a second pattern layer (33) disposed more to a Y2 direction side than the breakdown detection pattern layer (32), and signal pattern layers (34 to 36) disposed more to the Y2 direction side than the second pattern layer (33). Formed in the first pattern layer (31) are a grounding pattern and a power source pattern covering the breakdown detection pattern from the Y1 direction side. Formed in the second pattern layer (33) are a grounding pattern and a power source pattern covering the breakdown detection pattern from the Y2 direction side.


In the pumping apparatus of the invention, a circuit board is secured to a portion of a partition wall member on a side of a first direction, and disposed closer to the side of the first direction than a stator core and an insulation member. A portion of a terminal pin on the side of the first direction is secured to the circuit board, and a portion of the terminal pin on a side of a second direction is secured to the insulation member. A first contact surface facing the side of the first direction is formed on the insulation member. A second contact surface is formed on the partition wall member. The second contact surface faces the side of the second direction. Also, the first contact surface is in contact with the second contact surface to restrict a movement of the stator in the first direction.


Patent
Nidec Corporation | Date: 2017-01-11

[Problem] To reduce vibrations and noise of a motor to a greater degree than can be achieved in related art. [Solution] Provided are an inverter 5 arranged to drive a motor 2 with voltages outputted from driving elements 7U, 7V, 7W, 8U, 8V, and 8W; a rectifier circuit 3 arranged to rectify an alternating-current power supply 4 to generate direct-current power to be applied to the driving elements 7U, 7V, 7W, 8U, 8V, and 8W; a measuring section 10A arranged to measure a voltage V_(BUS) of the direct-current power; and a control circuit 9 arranged to control the inverter 5 in accordance with a result of a measurement by the measuring section 10A. The control circuit 9 is arranged to vary an amplitude value of a drive signal to be applied to a base or gate of each of the driving elements 7U, 7V, 7W, 8U, 8V, and 8W in a complementary manner in relation to a fluctuation in the voltage V_(BUS) of the direct-current power.

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