Mitsuba Corporation

Kiryu, Japan

Mitsuba Corporation

Kiryu, Japan
SEARCH FILTERS
Time filter
Source Type

Patent
Mitsuba Corporation and Honda Corporation | Date: 2017-02-08

Electromagnetic relay, comprising: an iron core (218) around which a coil (204) is wound; a yoke (219) which supports the iron core (218) and forms a magnetic path together with the iron core (218); a fixed contact terminal (212) with which a fixed contact (222) is provided; a movable contact spring (220) in which a first end of the movable contact spring (220) is attached to the yoke (219) and a second end of the movable contact spring (220) is provided with a movable contact (221) arranged opposite to the fixed contact (222); the movable contact spring (220) and the first end of the movable contact terminal (210) are fixed to the second wall (219b) so as to be aligned the welding points (P201) and (P202) are configured to face each other such, that a magnetic field (J2) formed by supplying electric current to the fixed contact terminal (212) and the movable contact terminal (210) is in the same direction as a magnetic field (Jl) formed by supplying electric current to the coil (204).


Patent
Mitsuba Corporation | Date: 2017-03-22

An electric motor includes: brushes (31) that are brought into sliding contact with a commutator of an armature that is fixed to a rotation shaft and feeds electric power; a brush holder stay (33) that supports the brushes (31) via brush holders (41); noise prevention elements (110) that are electrically connected to the brushes (31); and terminals (130) and jump wires (141) that electrically connect between the brush holders (41) and the noise prevention elements (110), wherein first connection portions, which connect between the noise prevention elements (110) and the terminals (130), and second connection portions, which connect between the terminals (130) and the jump wires (141), are both disposed only on a first surface (S1) of the brush holder stay (33).


Patent
Mitsuba Corporation | Date: 2017-02-01

A wiper system 1 has a wiper blade 5 for performing a reciprocating wiping operation on a windshield glass 6 and a brushless motor 2 for causing the wiper blade 5 to perform the reciprocating wiping operation. The motor used as the brushless motor 2 is provided with a rotary shaft for reciprocating the wiper blade 5, has a degree of operation freedom in three axial directions, and is rotatable about axes of two directions orthogonal to the rotary shaft. The wiper blade 5 operates at error angles different in direction between during a forward-path wiping operation and during a return-path wiping operation. When the wiper blade 5 reaches a reversing position, the brushless motor 2 is made to rotate about an axis extending in a extending direction of the wiper blade 5 to change the error angle 0.


Patent
Mitsuba Corporation | Date: 2017-01-11

An armature core (8A) includes a plurality of teeth (12) that radially extend. A plurality of coils (91), (92), and (93) are wound in a concentrated winding manner on a winding drum portion (12a) of each tooth; a winding wire (14) of a lowermost side of at least a first-layer coil is wound so as to come into close contact with a winding surface of a base end side of the winding drum portion; a second-layer coil, which is to be wound later, is wound so that at least a part of the second-layer coil overlaps the first-layer coil; and a step (12a1) as a regulating portion, which regulates the positional deviation of the winding wire of the lowermost side of the first-layer coil in an extending direction of the winding drum portion, is provided on at least a part of the winding surface for the first-layer coil on an outer periphery of the winding drum portion.


Patent
Mitsuba Corporation | Date: 2017-02-01

A wiper system according to the present invention includes wiper blades (2a, 2b) that perform a reciprocating wiping operation on a windshield (3), and a raindrop sensor (9) that detects the current amount of rainfall based on water droplets adhering to the windshield (3). If rainfall more than or equal to a predetermined amount is detected by the raindrop sensor (9), a heavy rain mode in which a wiping range of the wiper blades (2a, 2b) is made narrower than in a normal wiping operation is carried out. In the heavy rain mode, the wiper blade (2a) arranged on the drivers side is activated at high speed (Hi) within a heavy rain time wiping area X set near the forward field of view of the driver to ensure the field of view of the driver.


Patent
Mitsuba Corporation | Date: 2017-01-18

In a 4-pole, 6-slot, 18-segment electric motor, one forward winding coil (91) and two reverse winding coils (92, 93) are wound on each tooth (12). When the forward winding coils are formed of coils corresponding to a U phase, a V phase, and a W phase and the reverse winding coils are formed of coils corresponding to a -U phase, a -V phase, and a -W phase, the coils, which correspond to a U phase, a -W phase, a -W phase, a V phase, a -U phase, a -U phase, a W phase, a -V phase, and a -V phase, are electrically connected in this order between the adjacent segments. When the number of turns of the coils (91) corresponding to a U phase, a V phase, and a W phase is denoted by T1, the number of turns of the coils (92), which correspond to a -U phase, a -V phase, and a -W phase and first come into sliding contact with a brush, is denoted by T2, and the number of turns of the coils (93), which correspond to a -U phase, a -V phase, and a -W phase and later come into sliding contact with the brush, is denoted by T3, T2>T1>T3 is satisfied.


Patent
Mitsuba Corporation | Date: 2017-05-24

A gear side feeding terminal (73U, 73V, 73W) connected to a motor side feeding terminal (36U, 36V, 36W) provided to the end portion of a stator (32) in the axial direction of the stator (32) from the axial direction of a rotor (38) is provided on a control board (70) for controlling the rotor (38), housed in a gear case (61) so as to be stacked on a speed reduction mechanism (SD) from the direction crossing the axial direction of the rotor (38). In this manner, the wiper motor is composed of a brushless wiper motor (20), and it is unnecessary to provide the gear side feeding terminal (73U, 73V, 73W) so as to avoid the control board (70). Accordingly, it is possible to prevent electric noises, and provide a wiper motor reduced in size and weight, and since it is unnecessary to form a clearance in the control board (70), it is possible to provide a wiper motor further improved in degree of freedom for designing the control board (70).


Patent
Mitsuba Corporation | Date: 2017-05-24

A motor case part (30) having a stator (36) and a gear case part (50) having a reduction mechanism (SD) are integrally formed of the same material. In this manner, heat is directly dissipated from the motor case part (30) to the outside without the gear case part (30). Therefore, a brushless wiper motor (20) can be improved in heat radiation performance so as to enhance strength in high temperature can be realized. By manufacturing the motor case part (30) and the gear case part (50) from aluminum, while sufficient radiation performance is secured, a thickness thereof is made thin and lack in rigidity can be overcome. Furthermore, It is unnecessary to manufacture the motor case part (30) and the gear case part (50) individually and it is also unnecessary to perform pressing to a steel plate like the conventional art. Therefore, workability of the motor case part (30) and the gear case part (50) can be improved.


Patent
Mitsuba Corporation | Date: 2017-05-10

An electric power steering system 1 uses a brushless motor 3 as a drive source. The brushless motor 3 includes a stator 13 in which stator coils 17 are wound in a distributed manner and a rotor 14 rotatably disposed inside the stator 13. In the rotor 14, four sets of slit groups 31 each having circular-arc shaped slits 31a to 31c are formed. Rotor magnets 32 which are bonded magnets are filled in the slits 31a to 31c. The rotor magnets 32 are polar anisotropically magnetized. The rotor 14 is rotated by a magnet torque generated by the rotor magnets 32 and a reluctance torque based on a difference in inductance between magnetic paths so as to supply a steering assist force.


Patent
Mitsuba Corporation | Date: 2017-05-03

When the number of times of vehicle speed detections reaches a prescribed times n, a DR-side wiper blade is moved in such a way that when the front end side of a lip reaches a lower-side stop position APS1, the DR-side wiper blade is temporarily moved to a lower limit position for stop EPSL, then moved to an upper-side stop position APS2 and stopped there, and in such a way that when the front end side of the lip reaches an upper-side stop position APS2, the DR-side wiper blade is moved temporarily to an upper limit position for stop EPSU, then moved to the lower-side stop position APS1 and stopped there.

Loading Mitsuba Corporation collaborators
Loading Mitsuba Corporation collaborators