Motor with terminal holding portion
A motor includes a shaft, a bearing supporting the shaft, an armature disposed radially outward of the bearing, a bracket to which the bearing and the armature are fixed, and a rotor connected to the shaft. The bracket includes a bracket bottom portion covering a lower side of the armature, and a terminal holding portion extending radially outward from an outer peripheral portion of the bracket bottom portion. The terminal holding portion includes a plate-shaped holding portion main body connected to the outer peripheral portion of the bracket bottom portion, a terminal disposed on an upper surface of the holding portion main body, and a protrusion portion projecting downward from a lower surface of the holding portion main body at a same position in a radial direction as that of the terminal, or radially outward of the terminal.
1. A motor comprising:
a shaft centered on a center axis oriented in a vertical direction;
a bearing rotatably supporting the shaft;
an armature disposed radially outward of the bearing;
a bracket to which the bearing and the armature are fixed; and
a covered cylindrical rotor connected to the shaft; wherein
the bracket includes:
a bracket bottom portion covering a lower side of the armature; and
a terminal holding portion extending radially outward from an outer peripheral portion of the bracket bottom portion;
the terminal holding portion includes:
a plate-shaped holding portion main body connected to the outer peripheral portion of the bracket bottom portion;
a terminal disposed on an upper surface of the holding portion main body, to which a lead wire from an external power supply is connected; and
a protrusion portion projecting downward from a lower surface of the holding portion main body at a same position in a radial direction as that of the terminal, or radially outward of the terminal; and
the terminal is directly physically connected to the protrusion portion such that, when a downward physical load is applied to the terminal, the downward physical load is also applied to the protrusion portion.
2. The motor according to claim 1 , wherein the holding portion main body and the bracket bottom portion are a single unitary structural member made of resin.
3. The motor according to claim 1 , wherein the protrusion portion is disposed adjacent to the terminal at the same position in the radial direction as that of the terminal.
4. The motor according to claim 1 , wherein
the bracket further includes a bracket protrusion portion projecting downward from a lower surface of the bracket bottom portion; and
a lower end of the bracket protrusion portion and a lower end of the protrusion portion of the terminal holding portion are disposed at a same position in a vertical direction.
5. The motor according to claim 1 , wherein
the terminal holding portion is defined by a single monolithic member.
6. The motor according to claim 1 , wherein the protrusion portion is disposed at a radial outer end portion of the holding portion main body.
7. The motor according to claim 6 , further comprising:
a terminal cover covering the terminal holding portion from an upper side; wherein
the terminal cover is fixed to the terminal holding portion by a bolt and a nut, the bolt penetrating the terminal cover portion from the upper side and the nut being disposed inside the protrusion portion.