Vibration isolator
The vibration isolator includes: a first attachment member to be attached to one of a vibration generating unit or a vibration receiving unit; a second attachment member to be attached to another of the vibration generating unit or the vibration receiving unit; an elastic member that is provided at the second attachment member and elastically connects the first attachment member and the second attachment member; a convex portion protruded toward the first attachment member with reference to the outer surface of the elastic member opposed to the first attachment member; and a concave portion that is recessed at a region of the outer surface positioned on the base end side of the convex portion, that forms an extension portion at a side wall portion of the convex portion, and forms an opposed face opposed to the extension portion.
1. A vibration isolator comprising:
a first attachment member to be attached to one of a vibration generating unit or a vibration receiving unit;
a second attachment member to be attached to another of the vibration generating unit or the vibration receiving unit;
an elastic member that is provided at the second attachment member and elastically connects the first attachment member and the second attachment member;
a convex portion protruded toward the first attachment member with reference to an outer surface of the elastic member opposed to the first attachment member; and
a concave portion that is recessed in the same direction as a protruding direction of the convex portion,
wherein the concave portion is formed as a void space at a region of the outer surface positioned on a base end side of the convex portion, that forms an extension portion at a side wall portion of the convex portion, and that forms an opposed face opposed to the extension portion.
2. The vibration isolator according to claim 1 , wherein the concave portion is provided at a position corresponding to a twisting direction of the convex portion.
3. The vibration isolator according to claim 1 , wherein irregularities are provided on a surface of the convex portion.
4. The vibration isolator according to claim 3 , wherein the irregularities are provided on a side surface of the convex portion.
5. The vibration isolator according to claim 1 , wherein the concave portion is extended along at least two directions orthogonal to a protrusion direction of the convex portion so as to cover a circumference of the convex portion.
6. The vibration isolator according to claim 1 , wherein at least a part of the extension portion does not have the opposed face.
7. The vibration isolator according to claim 1 , wherein the concave portion is provided at a position corresponding to a twisting direction of the convex portion; and
irregularities are provided on a surface of the convex portion.
8. The vibration isolator according to claim 1 , wherein the concave portion is provided at a position corresponding to a twisting direction of the convex portion; and
the concave portion is extended along at least two directions orthogonal to a protrusion direction of the convex portion so as to cover a circumference of the convex portion.
9. The vibration isolator according to claim 1 , wherein the concave portion is provided at a position corresponding to a twisting direction of the convex portion; and
at least a part of the extension portion does not have the opposed face.
10. The vibration isolator according to claim 1 , wherein the concave portion is provided at a position corresponding to a twisting direction of the convex portion;
irregularities are provided on a surface of the convex portion; and
the irregularities are provided on a side surface of the convex portion.
11. The vibration isolator according to claim 1 , wherein the concave portion is provided at a position corresponding to a twisting direction of the convex portion;
irregularities are provided on a surface of the convex portion; and
the concave portion is extended along at least two directions orthogonal to a protrusion direction of the convex portion so as to cover a circumference of the convex portion.
12. The vibration isolator according to claim 1 , wherein the concave portion is provided at a position corresponding to a twisting direction of the convex portion;
irregularities are provided on a surface of the convex portion; and
at least a part of the extension portion does not have the opposed face.
13. The vibration isolator according to claim 1 , wherein the concave portion is provided at a position corresponding to a twisting direction of the convex portion;
irregularities are provided on a surface of the convex portion;
the irregularities are provided on a side surface of the convex portion; and
the concave portion is extended along at least two directions orthogonal to a protrusion direction of the convex portion so as to cover a circumference of the convex portion.
14. The vibration isolator according to claim 1 , wherein the concave portion is provided at a position corresponding to a twisting direction of the convex portion;
irregularities are provided on a surface of the convex portion;
the irregularities are provided on a side surface of the convex portion; and
at least a part of the extension portion does not have the opposed face.
15. The vibration isolator according to claim 1 , wherein the concave portion is provided at a position corresponding to a twisting direction of the convex portion;
irregularities are provided on a surface of the convex portion;
the irregularities are provided on a side surface of the convex portion;
the concave portion is extended along at least two directions orthogonal to a protrusion direction of the convex portion so as to cover a circumference of the convex portion; and
at least a part of the extension portion does not have the opposed face.