RESIN BRACKET AND BRACKETED VIBRATION DAMPING DEVICE EQUIPPED THEREWITH
A resin bracket including a mounting unit and a plurality of attachment units integrally formed using synthetic resin, and a plurality of insert members arranged on the respective attachment units such that each of the attachment units is configured to be attached to a member constituting a vibration transmission system by a fastening member configured to be inserted in an inner hole formed on an inside of the corresponding insert member. The insert members are formed in mutually a same shape. An inner circumference resin layer integrally formed with the attachment unit is adhered to an inner circumference surface on at least one of the insert members. The inner hole of the insert member formed on the inside of the inner circumference resin layer has a different shape from the inner hole of at least one other insert member.
1 . A resin bracket comprising:
a mounting unit configured to be attached to a vibration damping device;
a plurality of attachment units configured to be attached to a member constituting a vibration transmission system, the mounting unit and the attachment units being integrally formed using synthetic resin; and
a plurality of insert members arranged on the respective attachment units such that each of the attachment units is configured to be attached to the member constituting the vibration transmission system by a fastening member configured to be inserted in an inner hole formed on an inside of the corresponding insert member, wherein
the insert members are formed in mutually a same shape,
an inner circumference resin layer integrally formed with the attachment unit is adhered to an inner circumference surface on at least one of the insert members, and
the inner hole of the insert member formed on the inside of the inner circumference resin layer has a different shape from the inner hole of at least one other insert member.
2 . The resin bracket according to claim 1 , wherein
at an opening end surface of the inner hole of the at least one insert member, a connection groove connecting the inside and an outside of the insert member is formed, and
the attachment unit and the inner circumference resin layer are integrally formed through the connection groove.
3 . The resin bracket according to claim 2 , wherein the connection groove is formed on each opening end surface of the inner hole of the at least one insert member, and the attachment unit and the inner circumference resin layer are integrally formed through each connection groove.
4 . The resin bracket according to claim 1 , wherein
the insert member comprises a tube shaped forged metal member,
a positioning projection is provided on the insert member projecting facing an outer circumference, and
a positioning member that positions the insert member in relation to the attachment unit is constituted by the positioning projection.
5 . The resin bracket according to claim 1 , wherein the insert member comprises a pipe metal member, and a positioning member is provided for positioning the insert member in relation to the attachment unit.
6 . The resin bracket according to claim 5 , wherein a connection hole that connects the inside and an outside is formed piercing through the insert member, and the attachment unit and the inner circumference resin layer are integrally formed through the connection hole.
7 . The resin bracket according to claim 1 , wherein the inner circumference resin layer is partially adhered to the inner circumference surface of the insert member.
8 . The resin bracket according to claim 1 , wherein the inner circumference resin layer is adhered along an entire circumference in relation to the inner circumference surface of the insert member.
9 . A bracketed vibration damping device comprising:
an attachment member configured to be attached to a first member constituting a vibration transmission system;
a main rubber elastic body adhered to the attachment member; and
a resin bracket including: a mounting unit; a plurality of attachment units configured to be attached to a second member constituting the vibration transmission system, the mounting unit and the attachment units being integrally formed using synthetic resin; and a plurality of insert members arranged on the respective attachment units such that each of the attachment units is configured to be attached to the second member constituting the vibration transmission system by a fastening member configured to be inserted in an inner hole formed on an inside of the corresponding insert member, wherein the insert members are formed in mutually a same shape, an inner circumference resin layer integrally formed with the attachment unit is adhered to an inner circumference surface on at least one of the insert members, and the inner hole of the insert member formed on the inside of the inner circumference resin layer has a different shape from the inner hole of at least one other insert member, wherein
the attachment member and the mounting unit of the resin bracket are elastically connected by the main rubber elastic body.