Asmo Co., Ltd.

Nippondenso Co., Ltd.

Masashi Nakata

Akio Oshiro

Seiichi Murakami

Yasuaki Uchida

Yoshihiko Harada

Tetsuro Shimmura

Naomi Miyazaki

Toshihiro Ishikawa

Brush holding device includes a brush, a brush holder, a torsion spring and a support pin. The torsion spring applies side pressure to the brush by spring force exerted around the support pin and also temporarily hold the brush in the brush holder. When the temporarily held state of the brush holder is relieved, the spring force of the torsion spring urges the brush toward a commutator.

Brush holding device, motor having the same, and method for assembling motor

A wiper blade wipes over a predetermined range of a front windshield in response to rotation of a wiper motor in a forward and reverse directions. The wiper blade operates in a wiping range between a predetermined upper reversing position and a predetermined lower reversing position. An upper pre-reversing position is defined inside of the upper reversing position, and a lower pre-reversing position is defined inside of the lower reversing position. A rotation sensor produces pulse signals in response to the rotation of the wiper motor. A CPU counts the pulse signals produced from the rotation sensor when a position detection sensor detects an arrival of the wiper blade at the pre-reversing position. The CPU produces a control signal to a drive circuit and reverses the direction of the drive current of the wiper motor to reverse the rotation of the wiper motor, when the pulse count value reaches a predetermined value.

Wiper control apparatus and method capable of variably adjusting wiper blade motion

A method of making an electric motor where the motor has a reduction gear and a gear cover mounted thereon. An opening is formed through the gear cover at a location corresponding to a connection portion. A pressure member is inserted into the gear cover through the opening and is pressed against another pressure member to squeeze a choke coil and a connection plate. High current may flow through the pressure members for a short time to weld the choke coil and the connection plate together by way of resistive heating.

Method of making an electric motor

A motor terminal device comprises a storage case having an engaging section and installed on the motor side and a storage cover having an engaged section which can be engaged with the engaging section. The storage case stores external connecting terminals and electrical components, while the storage cover has a projecting pressers located in a position corresponding to the electrical components to secure the electrical components by pressing. The external connecting terminals have a latch hole and the storage case has a latch projection. Detachment of external connecting terminals is prevented as the latch projection is engaged with the latch hole.

Method of making a motor terminal device

A motor terminal device comprises a storage case having an engaging section and installed on the motor side and a storage cover having an engaging section which can be engaged with the engaging section of the storage case. The storage case stores external connecting terminals and electrical components including capacitors and choke coils, while the storage cover has elastic projecting pressers located in a position corresponding to the electrical components to secure the electrical components by pressing. The presser for the choke coil includes a pair of plate walls which sandwiches the choke coil therebetween and presses the same toward the storage case. The presser for the capacitor includes a butyl rubber or urethane foam pasted on the inside of the storage cover.

Motor terminal device

An electric motor has a detachably mounted gear cover and a reduction gear located within the gear cover. One pressure member is inserted into the gear cover through an opening formed through the gear cover and urged against another pressure member to squeeze a choke coil and a connection plate. A high current is flowed through the pressure members for a short time to weld the choke coil and connection plate together through resistive heating.

Electric motor and method of making the same

A brush holding structure for guiding a brush to a commutator is supported in a motor case. The structure includes an insulator plate attached to the motor case. The insulator plate is provided with guide means for guiding the brush in a direction which is inclined to a radial direction of the commutator within a plane including the axis of the commutator. The structure further includes a plate-like spring which has, at both ends, coil portions for winding up. An intermediate part of the plate-like spring presses the brush against the commutator to hold the brush in contact with the commutator without any play.

Brush holding structure for motor

A gear backlash adjusting mechanism includes a worm wheel having a gear tooth that engages the gear tooth of a worm. The gear tooth of the worm wheel is curved or tapered upwardly in the axial direction toward one end of the worm wheel. An adjusting apparatus permits the distance between the gear tooth of the worm wheel and the gear tooth of the worm to be adjusted so that the amount of backlash between the gear tooth of the worm wheel and the worm can be adjusted.

Growing community of inventors

Toyohashi, Japan

Masashi Nakata