Motor and method for manufacturing motor
View Patent ↗A brush holder is held between a flange of a yoke housing and a gear housing of a speed reduction unit and fastened by a fastening screw. A link of the brush holder is located between a screw fastening portion of the flange and a screw fastening portion of the gear housing. A connector is linked to a holder main body by the link. The link includes a screw insertion hole and first and second bridges. A metal terminal, which electrically connects the holder main body and the connector, is embedded in each of the first and second bridges.
1. A motor comprising:
a motor main body that includes a yoke housing including a flange, wherein the flange includes a screw fastening portion;
a speed reduction unit that includes a gear housing, wherein the gear housing includes a screw fastening portion; and
a resin brush holder held between the flange and the gear housing and fastened by a fastening screw, wherein the brush holder includes
a holder main body that holds a power supplying brush,
a link extending from the holder main body so that the link is located between the screw fastening portion of the flange and the screw fastening portion of the gear housing, and
a connector linked to the holder main body by the link and used for external connection, wherein
the link includes a screw insertion hole, through which the fastening screw is inserted, and first and second bridges arranged at opposite sides of the screw insertion hole,
the first and second bridges connect the holder main body and the connector, and
a metal terminal, which electrically connects the holder main body and the connector, is embedded in each of the first and second bridges.
2. The motor according to claim 1 , wherein the screw insertion hole is located in a laterally central portion of the link.
3. The motor according to claim 1 , wherein each of the metal terminals is a power terminal, which supplies current to the power supplying brush.
4. The motor according to claim 1 , wherein the first and second bridges have the same length.
5. The motor according to claim I, wherein the first and second bridges are covered by a seal member extending from the holder main body.
6. A method for manufacturing the motor according to claim 1 , the method comprising:
injection-molding the brush holder integrally with the metal terminals, which serve as inserts, wherein the metal terminals are connected to each other by a connecting portion; and
cutting the connecting portion exposed in the screw insertion hole subsequent to the injection-molding.
7. The method for manufacturing the motor according to claim 6 , wherein a cut location of the connecting portion is covered by a seal member.