Motor device having slidable guide portions
View Patent ↗A motor device used in a power seat device for an automobile includes a motor yoke, a resin-made end frame for closing a cavity portion of a motor and a resin-made gear box. The end frame is formed with guide portions utilized in transferring the motor in manufacturing the motor. At least one of the guide portions is formed with an inserting portion capable of inserting a fixing member for attachment of a fixing portion of the motor yoke and a fixed portion of the end frame. An engaging portion in a projected shape is formed at one of the end frame and the gear box, and an engaging portion in a recessed shape to which the engaging portion in the projected shape is fitted is formed at the other thereof.
1. A motor device comprising:
a motor yoke having a cavity portion and accommodating therein an armature having a rotating shaft; and
an end frame for closing the cavity portion and formed with a fixed portion that is fixed to a fixing portion formed at the motor yoke,
wherein the end frame is formed with guide portions for slidably engaging an assembly line transfer rail, the guide portions being generally perpendicular to the rotating shaft, and
wherein at least one of the guide portions is formed with an inserting portion for inserting a fixing member for attachment of the fixing portion of the motor yoke and the fixed portion of the end frame.
2. The motor device according to claim 1 , wherein the fixing portion of the motor yoke and the fixed portion of the end frame are formed at a plurality of locations in equal intervals in a peripheral direction centering on the rotating shaft.
3. The motor device according to claim 1 , wherein the motor yoke is provided with a section substantially in a circular shape.
4. The motor device according to claim 1 , wherein the guide portions are grooves formed in parallel with an engaging direction of the assembly line transfer rail.
5. The motor device according to claim 1 , further comprising:
a gear box made of a resin and directly connected to the end frame to receive a rotating force of the rotating shaft,
wherein the end frame is made of a resin, includes a projected engaging portion at one of the end frame and the gear box, and includes a recessed engaging portion for engagement with the projected engaging portion at the other thereof, and
wherein the projected engaging portion includes a plurality of projections along a direction of the rotating shaft at a face thereof for engagement with the recessed engaging portion, and the recessed engaging portion includes a plurality of plane portions in contact with the plurality of projections.
6. The motor device according to claim 5 , wherein the end frame and the gear box are connectable at a plurality of coupling portions capable of being coupled at a selective position centering on the engaging portions.
7. The motor device according to claim 1 , wherein the inserting portion is located between the guide portions in a direction of the transfer rail.
8. The motor device according to claim 1 , wherein one of the guide portions is shorter than another of the guide portions in an assembly line transfer rail engagement direction.
9. A motor device comprising:
a motor yoke accommodating therein an armature having a rotating shaft; and
an end frame disposed adjacent to the motor yoke and accommodating an axial end of the rotating shaft,
wherein the end frame has a plurality of guide portions extending radially outside of the rotating shaft, each of the guide portions having a guide groove extending in a perpendicular direction to the rotating shaft for slidably receiving therein an assembly line transfer rail.
10. The motor device according to claim 9 , wherein the end frame has inserting portions provided between the plurality of guide portions to receive therein fixing members which fix the end frame to the motor yoke in a direction of the rotating shaft.
11. The motor device according to claim 10 , wherein the guide portions are provided at four positions, two guide grooves of a first pair of the guide portions being in line and separated by one of the inserting portions, and two guide grooves of a second pair of the guide portions being in line and separated by another one of the inserting portions, the two guide grooves of the first pair of the guide portions and the two guide grooves of the second pair of the guide portions being in parallel with each other.
12. The motor device according to claim 9 , wherein one of the guide portions is shorter than another of the guide portions in an assembly line transfer rail engagement direction.
13. A motor device, comprising:
a motor yoke having a rotating shaft housed therein;
an end frame having a plurality of sliding parts for slidably engaging the end frame with an assembly line transfer rail; and
an inserting part located between adjacent sliding parts for attaching the motor yoke to the end frame, wherein
the plurality of sliding parts are formed respectively in parallel with a direction substantially orthogonal to the rotating shaft and arranged symmetrically relative to a line connecting the rotating shaft.
14. The motor device according to claim 13 , wherein one of the sliding parts is shorter than another of the sliding parts in an assembly line transfer rail engagement direction.