Nidec Sankyo Corporation

Denso Corporation

Kabushiki Kaisha Sankyo Seiki Seisakusho

Mamoru Yamaoka

Takafumi Kasuga

Yuji Shingu

Koji Aizawa

Kazunori Takahashi

Shigeyuki Nagata

Yoshinori Ogawa

Tetsuo Miyazawa

Provided are: a geared motor with which a large torque can be obtained without an increase in size; and a method for producing said geared motor. In this geared motor (), an output member () having a helical groove () formed in an outer circumferential section is provided between a first plate part () and a second plate part () of a frame (), and the rotation of a motor pinion () is reduced in speed by a reduction gear mechanism () and is transmitted to a gear part () of the output member (). In this geared motor (): the output member () is arranged between the first plate part () and the second plate part (); then, a first fixing shaft () is inserted from a through hole () in the second plate part () into a shaft hole () in the output member (), and a first shaft end part () is fitted into a first fixing shaft support hole (); and then, a second shaft end part () and the second plate part () are fixed.

Geared motor and manufacturing method for geared motor

The purpose of the invention is to provide a motor in which it is possible to efficiently construct a structure wherein a terminal part of a motor body is covered by a terminal cover. This terminal cover () is a resin molded article integrally including a first member () fixed to a motor body (), a second member () that covers the first member (), and a hinge part (). Thus, the first member () and the second member () can be engaged with one another by first fixing the first member () to the motor body (), and then rotating the second member () at the hinge part () and covering the first member () with the second member (). Thus, the number of components can be reduced compared to cases where the first member () and the second member () are constructed as separate members, and the task of attaching the second member () to the first member () can be performed efficiently.

Motor

Provided is a motor in which the positional misalignment of a terminal cover provided to a motor body can be suppressed. In a terminal cover () fixed to a motor body (), an engagement plate part () extends from a cover part (), which covers a terminal part () on a lateral surface of the motor body (), to a position overlapping an end surface () on a counter-output side (L) of the motor body (). The engagement plate part () is provided with an engagement recess () in which a projection () on the end surface () on the counter-output side (L) of the motor body () is fitted. Thus, even when external force is applied to the terminal cover (), the terminal cover () is less likely to be subjected to positional misalignment. The engagement recess () is groove shaped, and the projection () is fitted to an end part, in the extending direction, of the engagement recess () formed in a groove shape.

Provided is a geared motor with which a large torque can be obtained without an increase in size. In this geared motor (), an output member () having a helical groove () formed in an outer circumferential section is provided between a first plate part () and a second plate part () of a frame (), and the rotation of a motor pinion () fixed to a rotary shaft () is reduced in speed by transmission gears of a reduction gear mechanism () and is transmitted to a gear part () of the output member (). Thus, a large torque can be output, even when the gear part () of the output member () is made smaller than the outer diameter of the section () provided with the helical groove (). Also, even when a gear cover () is provided, a lateral plate part () of the gear cover () covering the outer circumferential section of the gear part () of the output member () is located close to the rotation center axis of the output member (). Thus, it is possible to prevent the geared motor () from being increased in size by the gear cover ().

Geared motor

A motor device may include a motor comprising a motor shaft protruded from a motor main body; a worm gear connected with the motor shaft through a coupling; a worm wheel engaged with the worm gear; and a frame on which the motor, the worm gear and the worm wheel are mounted. The coupling may include a motor side coupling part; a transmission member; and a worm gear side coupling part. The motor side coupling part and the transmission member may be relatively movable in a first direction perpendicular to the axial line direction. The transmission member and the worm gear side coupling part may be relatively movable in a second direction perpendicular to the axial line direction and intersecting the first direction. A compression coil spring may be disposed between the transmission member and an end part of the worm gear.

Motor device having transmission member that is movable relative to motor side coupling part and worm gear side coupling part

A motor device may include a motor including a motor shaft protruded from a motor main body; a worm gear connected with the motor shaft through a transmission mechanism and is formed with a spiral groove; and a worm wheel engaged with the worm gear. The transmission mechanism may include a transmission member to transmit rotation of the motor shaft to the worm gear. One end face on the motor main body side of the worm gear and an end face on a worm gear side of the transmission member may be formed with two protruded parts protruded toward the other of the end faces, and a recessed part engaged with the protruded parts is formed in the other of the end faces. A compression coil spring may disposed between the worm gear and the transmission member between the two protruded parts.

Motor device

A geared motor may include a motor and a gear mechanism for transmitting rotation of the motor. The gear mechanism includes an output gear which outputs rotation of the motor and a gear in a preceding stage which is connected with the output gear through another gear and the output gear is formed with a first positioning part showing an angular position of the output gear and the gear in the preceding stage is formed with a second positioning part showing an angular position of the gear in the preceding stage. After an assembling angular position of the output gear and an assembling angular position of the gear in the preceding stage have been determined, another gear is assembled.

Geared motor and manufacturing method therefor

A gear mechanism may include a first gear, a second gear engaged with the first gear, and a stopper part formed in the second gear. The stopper part may be engaged with the first gear to prevent turning of the first gear. The stopper part is a part where a tooth is not formed in an outer peripheral part of the second gear. The stopper part includes a protruded part protruded to an outer side in a radial direction with respect to a tooth tip circle of a tooth part of the second gear, and a recessed part recessed to an inner side in the radial direction with respect to the protruded part and adjacent to the protruded part in a circumferential direction and, when turning of the first gear is stopped, a tip end side of the tooth part of the first gear is abutted with the recessed part.

Gear mechanism and geared motor

A contact carriage 2 is movably provided in an opening 12 formed in a frame 11 having a card path 8 into which an IC card 9 is inserted, and of the opposed side faces defining the opening 12, the side face 13b which confronts a carriage movement reference surface 17 used when the contact carriage 2 moves in the opening 12 includes a flat portion 14a and a arcuately protruded portion 15a.

Growing community of inventors

Nagano, Japan

Mamoru Yamaoka