Vehicle outside mirror device
View Patent ↗It is important to mount a mirror assembly on a shaft in such a manner as to enable tilting without a backlash. According to the present invention, an inner circumferential face of a cylinder portion 20 of a notch member 15 of a clutch mechanism 8 comes into contact with an outer circumferential face of a shaft 3 , and an outer circumferential face of the cylinder portion 20 of the notch member 15 of the clutch mechanism 8 comes into contact with an inner circumferential face of a housing portion 9 of a mirror assembly 4 , respectively. As a result, the present invention is capable of mounting the mirror assembly 4 on the shaft 3 in such a manner to enable tilting without a backlash, by means of the cylinder portion 20 of the notch member 15 of the clutch mechanism 8.
1. A vehicle outside mirror device in which a mirror assembly is capable of tilting relative to a vehicle body, said device comprising:
a base that is fixed to the vehicle body;
a shaft that is fixed to the base;
the mirror assembly that is mounted in a manner to enable tilting relative to the shaft; and
a clutch mechanism that is provided between the shaft and the mirror assembly,
wherein at the mirror assembly, a housing portion adapted to externally engage with the shaft in a manner to enable rotation around a rotational center of the shaft is provided at the mirror,
the clutch mechanism includes a notch member;
the notch member is formed of a notch portion and a cylinder portion,
the notch portion engages with a notch portion that is provided on a side of the mirror assembly or on a side of the shaft to thereby position the mirror assembly in a use location, and if an external force is applied to the mirror assembly, the notch portion on the mirror assembly side and the notch portion on the shaft side disengage from each other to thereby enable the mirror assembly to rotate around the rotational center of the shaft, and
an inner circumferential face of the cylinder portion comes into contact with an outer circumferential face of the shaft, and an outer circumferential face of the cylinder portion comes into contact with an inner circumferential face of the housing portion of the mirror assembly, respectively, wherein
the cylinder portion of the notch member is formed in a sectional circular shape,
a protrusive portion that comes into linear contact with a face of a counterpart is provided on at least one of an inner circumferential face of the cylinder portion of the notch member and an outer circumferential face of the shaft, and
a protrusive portion that comes into linear contact with a face of a counterpart is provided on at least one of an outer circumferential face of the cylinder portion of the notch member and an inner circumferential face of the housing portion of the mirror assembly.
2. The vehicle outside mirror device according to claim 1 , wherein the cylinder portion of the notch member is formed in a sectional noncircular shape.
3. The vehicle outside mirror device according to claim 1 , wherein the cylinder portion of the notch member is formed in a sectional circular shape.