Anti-vibration unit

摘要

An anti-vibration unit, which enables a reduction in man-hours to be achieved during manufacturing and a reduction in the number of parts, is provided. A boss member of an anti-vibration device is pressed into a press-fitting section of a second bracket so as to be firmly fixed. The omission of the bolt enables a corresponding reduction in the number of parts. Moreover, by omitting the bolt in this way, there is no need to form a female threaded section on the boss member of the anti-vibration device, thus enabling a corresponding reduction in man-hours during manufacturing. In addition, when chemically treating the boss member of the anti-vibration device, it is unnecessary to implement a step for protecting the female threaded section with a masking bolt, thus eliminating the need to attach and detach the masking bolt, which in turn enables a corresponding reduction in man-hours during manufacturing.

主权项

1. An anti-vibration unit, comprising:
an anti-vibration device that includes a boss member, a cylindrical outer tube member that is coaxially disposed above the boss member, and an anti-vibration base that connects the outer tube member and the boss member to each other and is formed of a rubber-like elastic body; a first bracket that holds the anti-vibration device by pressing the outer tube member of the anti-vibration device in the axial direction and is attached to a vibration source side; and a second bracket that includes a fixing member to which the boss member of the anti-vibration device is fixed, a pair of erection members that are erected upward from both sides of the fixing member and are disposed so as to oppose each other with the anti-vibration device in between, and a connection member that connects erection distal ends of the pair of erection members to each other and is disposed so as to oppose the fixing member with the anti-vibration device in between, and is attached to a vehicle body side, wherein the boss member of the anti-vibration device includes a press-in section, the fixing member of the second bracket includes a press-fitting section, the press-in section of the boss member is pressed in to the press-fitting section of the fixing member, and the boss member of the anti-vibration device is thereby fixed to the fixing member of the second bracket, wherein said boss member includes a wide base section that is surrounded by said rubber-like elastic body of said anti-vibration base, a narrow shaft section that projects from a lower surface side of the base section, and a wide extension section at a distal end of the shaft section, said wide extension section forming said press-in section of the boss member and being sized to press-fit into said press-fitting section of the fixing member, wherein the press-fitting section of the fixing member includes a positioning wall that is formed at a final end that is on the opposite side of the opening in the side surface of the fixing member, abuts upon the press-in section of the boss member pressed in through the opening, and restricts the pressing-in, wherein the extension section of the press-in section of the boss member is formed into a disk shape, wherein the positioning wall of the press-fitting section of the fixing member is formed so as to curve in an arc shape corresponding to the disk shape of the extension section, and the positioning wall includes a positioning-wall opening that is formed on the opposite side of the opening in the side surface of the fixing member.