1. A power transmission mechanism for transmitting a torque to a rotating shaft of a compressor of an air conditioner for a vehicle comprising:
a rotating body having a female screw formed in a center thereof;
a rotating shaft having a male screw formed on a part of an outer surface thereof and thereby being screwed into the rotating body;
a pulley rotatably supported by a bearing on an outer surface of a housing of the compressor;
a torque limiter located between the rotating body and the pulley, wherein the torque limiter transmits torque from the pulley to the rotating body;
an end surface, in an axial direction, formed on the rotating body side as a bearing surface for transmitting a torque between the rotating body and the rotating shaft by being pressed against a bearing surface of an opposite rotating shaft side by action of the female screw and the male screw and by being brought into frictional contact therewith, and for preventing the male screw from being screwed excessively into the female screw; and
an end surface, in an axial direction, formed on the rotating shaft side as the bearing surface for the same purpose, corresponding to the end surface on the rotating body side and for mating therewith; wherein
the two end surfaces are arranged in opposite positions to each other; and
an annular space is formed around the rotating shaft in order to form a part, near a center of at least one of the two end surfaces in frictional contact with each other, which does not come into contact with the other end surface and does not act as a bearing surface.
2. The power transmission mechanism as set forth in claim 1, wherein a separately-provided sleeve is attached to the rotating shaft in order to form the end surface, as the bearing surface, on the rotating shaft side.
3. The power transmission mechanism as set forth in claim 2, wherein the rotating shaft comprises a tapered surface and a position of the sleeve is determined by the tapered surface.
4. The power transmission mechanism as set forth in claim 1, wherein the annular space is formed by an annular cut-out part formed on either side of the rotating body or the rotating shaft.
5. The power transmission mechanism for transmitting a torque to a rotating shaft of a compressor of an air conditioner for a vehicle comprising:
a rotating body having a female screw formed in a center thereof;
a rotating shaft having a male screw formed on a part of an outer surface thereof and thereby being screwed into the rotating body;
a pulley rotatably supported by a bearing on an outer surface of a housing of the compressor;
a torque limiter located between the rotating body and the pulley, wherein the torque limiter transmits torque from the pulley to the rotating body;
an end surface, in an axial direction, formed on the rotating body side as a bearing surface for transmitting a torque between the rotating body and the rotating shaft by being pressed against a bearing surface of an opposite rotating shaft side by action of the female screw and the male screw and by being connected to the bearing surface via an annular shim, and for preventing the male screw from being screwed excessively into the female screw; and
an end surface, in an axial direction, formed on the rotating shaft side as the bearing surface for the same purpose, corresponding to the end surface on the rotating body side and for mating therewith; wherein
the two end surfaces are arranged in opposite positions to each other; and
an annular space is formed around the rotating shaft in order to form a part, near a center of at least one of the two end surfaces in frictional contact with each other, which does not come into contact with the other end surface and does not act as a bearing surface, and
the annular space is formed by locating the annular shim, which has an inner diameter greater than the outer diameter of the rotating shaft, between the end surfaces in opposition to each other on both sides of the rotating body and the rotating shaft.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A reactor that can be disposed between stacked coolers, the reactor comprising:
a flat case;
a pair of coils: (i) located in the flat case, (ii) wound in opposite directions from each other, and (iii) disposed adjacent to each other in a radial direction of the coils; and
a core material covering the coils in the flat case.
2. The reactor according to claim 1, wherein
the coils of the pair of coils are aligned in a direction intersecting an axial direction of winding of the coils.
3. The reactor according to claim 1, wherein
the core material includes a high-permeability core material and a low-permeability core material, the high-permeability core material covers first portions of each of the pair of coils, and the low-permeability core material covers the high-permeability core material and covers second portions of each of the pair of coils not covered by the high-permeability core material.
4. The reactor according to claim 3, wherein
the pair of coils includes a first coil and a second coil, and
the first portions of the first and second coils face each other and are covered by the high-permeability core material, and the second portions of the first and second coils do not face each other and are not covered by the high-permeability core material.
5. The reactor according to claim 1, wherein
outer peripheries of the coils of the pair of coils in the radial direction contact each other.