1. Binoculars, comprising:
a first barrel, defining a first optical axis, comprising a first post and a first abutting surface;
a second barrel, defining a second optical axis parallel to the first optical axis, comprising a second post and a second abutting surface;
a first cover, comprising a first guide slot substantially perpendicular to the first optical axis and a second guide slot substantially perpendicular to the second optical axis, wherein the first post is movably disposed in the first guide slot and the second post is movably disposed in the second guide slot;
a second cover connected with the first cover, wherein the first and second barrels are disposed between the first and second covers;
a first resilient member disposed between the first abutting surface and the first cover, retaining the first post sliding in the first guide slot and the first barrel moving perpendicular to the first optical axis;
a second resilient member disposed between the second abutting surface and the second cover, retaining the second post sliding in the second guide slot and the second barrel moving perpendicular to the second optical axis.
2. The binoculars as claimed in claim 1, wherein the first barrel further comprises a first blocking portion substantially perpendicular to the first optical axis, abutting the first cover, whereby the first barrel is movable along the first guide slot, and the second barrel further comprises a second blocking portion substantially perpendicular to the second optical axis, abutting the second cover, whereby the second barrel is movable along the second guide slot.
3. The binoculars as claimed in claim 1 further comprising:
a ring pivoting with the first cover at the center thereof, comprising a first portion and a second portion symmetrical to the center of the ring, wherein the first portion forms a third guide slot and the second portion forms a fourth guide slot;
a first protrusion fixed to the first barrel and movably disposed in the third guide slot;
a second protrusion fixed to the second barrel and movably disposed in the fourth guide slot, wherein the ring rotates around the center thereof with the first and second protrusions sliding in the third and fourth guide slots respectively when the first barrel moves perpendicular to the first optical axis and the second barrel moves perpendicular to the second optical axis.
4. The binoculars as claimed in claim 1, wherein the first barrel further comprises an first objective lens assembly movable along the first optical axis, and the second barrel further comprises an second objective lens assembly movable along the second optical axis.
5. The binoculars as claimed in claim 4, wherein the first barrel further comprises a fifth guide slot parallel to the first optical axis, the first objective lens assembly comprises a third protrusion movably disposed in the fifth guide slot, the second barrel further comprises a sixth guide slot parallel to the second optical axis, and the second objective lens assembly comprises a fourth protrusion movably disposed in the sixth guide slot.
6. The binoculars as claimed in claim 5 further comprising:
a connecting rod comprising a seventh guide slot perpendicular to the first optical axis with the third protrusion movably disposed therein and an eighth guide slot perpendicular to the second optical axis with the fourth protrusion movably disposed therein; and
a screw rod mechanism disposed on the second cover, comprising a screw rod engaging and driving the connecting rod parallel to the first and second optical axes thereby driving the first and second objective lens assemblies along the first and second optical axes respectively.
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. In an alternative current generator for vehicle comprising a pair of cores having plural claw shape portion configuration plates, a rotating shaft inserted into a center portion of said core, a rotor inserted and fixed to said rotating shaft and having an excitation current supply use slip ring, a stator provided at an outer periphery of said rotor, and a front side bracket and a rear side bracket arranged to surround said rotor and said stator;
said rotor is supported to rotate freely each of said front side and rear side brackets through a bearing member, said core is comprised of a pair of a front fan and a rear fan which are installed to both ends of said core, to end portions of said respective front side and rear side brackets plural intake holes are provided, and an outer peripheral portion of said respective front side and rear side brackets plural exhaust holes are provided, and in accordance with a rotation of said rotor an inner portion of said generator is ventilation-cooled using said front and rear fans, said alternative current generator for vehicle is characterized in that
at least one of said front fan and said rear fan is a resin molding fan having an insert metal fitting; and
a fixing of said resin molding fan to said core is carried out by joining said insert metal fitting to said core by using a joining means such as a welding.
2. An alternative current generator for vehicle according to claim 1, is characterized in that
said resin molding fan is a centrifugal fan which is comprised of a ring shape supporting plate in which plural blades are provided projectingly in an axial direction; and
an inner diameter of said ring shape supporting plate is established substantially same to an outer diameter of said rotating shaft of said rotor or an outer diameter of a resin portion of said slip ring which is inserted and fixed to said rotating shaft.
3. An alternative current generator for vehicle according to claim 1 or claim 2, is characterized in that
said resin molding fan is a centrifugal fan which is comprised of a ring shape supporting plate in which plural blades are provided projectingly in an axial direction; and
to a rear face (a contact face with said core) of a blade projecting face of said ring shape supporting plate, a raised portion which is suited to a back face portion shape configuration of said core is provided.