HEAD ASSEMBLY
A head assembly for writing or reading information to or from a recording medium. The head assembly includes a suspension having an electrode pad; a mounting member placed on the suspension; a head mounted on the mounting member and having an electrode, for writing or reading information; and a first bonding member made of a hot-melt adhesive and fixing the electrode to the electrode pad.
1 . A head assembly for writing or reading information to or from a recording medium comprising:
a suspension including an electrode pad;
a mounting member placed on the suspension;
a head mounted on the mounting member and including an electrode, for writing or reading information; and
a first bonding member made of a hot-melt adhesive and fixing the electrode to the electrode pad.
2 . The head assembly according to claim 1 , wherein the mounting member includes a relay electrode fixed thereto, the first joint fixing the electrode to the relay electrode.
3 . The head assembly according to claim 2 , wherein the electrode is disposed on one of side surfaces of the head, and the relay electrode pad is disposed at a position adjacent to the one side surface of the head.
4 . The head assembly according to claim 2 , wherein the mounting member includes a first bonding pad fixed thereto, and the suspension includes a second boding pad fixed thereto, the first bonding pad is fixed to the second bonding pad by a hot-melt adhesive.
5 . The head assembly according to claim 1 , wherein the Young's modulus of the mounting member is lower than that of the suspension.
6 . The head assembly according to claim 5 , wherein the Young's modulus of the mounting member is lower than that of the head.
7 . The head assembly according to claim 6 , wherein the material of the mounting member has a linear expansion coefficient higher than those of the material of the head and the material of the suspension.
8 . The head assembly according to claim 1 , wherein the hot-melt adhesive is solder.
9 . The head assembly according to claim 1 , wherein the mounting member includes a third bonding pad fixed thereto, and the head includes a fourth boding pad fixed thereto, the fourth bonding pad is fixed to the third bonding pad by a hot-melt adhesive.
10 . The head assembly according to claim 1 , further comprising second bonding member made of an adhesive fixing the head to the mounting member.
11 . The head assembly according to claim 10 , wherein the adhesive is an ultraviolet curable adhesive.
12 . The head assembly according to claim 1 , further comprising a mechanical connection fixing the head to the mounting member.
13 . The head assembly according to claim 12 , wherein the mechanical connection comprises:
an opening provided in the suspension; and
a leaf spring member provided to the mounting member, adapted to engage with the opening.
14 . The head assembly according to claim 1 , wherein the mounting member includes a slit for making the member stretchy.
15 . The head assembly according to claim 10 , wherein the second bonding member is disposed on a portion of the mounting member, the mounting member further includes a slit for making the mounting member stretchy, the slit being disposed at another portion of the mounting member.
16 . The head assembly according to claim 2 , wherein one end of the mounting member is bent to thereby form a slope, the mounting member includes an opening or a notch in the bent portion, and the relay electrode pad is arranged so that one portion thereof extends to the opening or the notch.
17 . The head assembly according to claim 2 , wherein one end of the mounting member is bent by approximately 90 degrees, the mounting member includes an opening or a notch in the bent portion, the relay electrode pad is arranged so that one portion thereof extends to the opening or the notch, and the relay electrode pad is ultrasonically bonded to the electrode of the head.
18 . The head assembly according to claims 1 , wherein the mounting member includes a test electrode pad connected to the relay electrode pad, and the head assembly is formed in such a way that the head is fixed to the mounting member, and then after an electrical test of the head has been performed via the test electrode pad, the test electrode pad is dismounted.
19 . A disk device comprising:
a recording medium for recording information; and
a head assembly including:
a suspension including an electrode pad,
a mounting member placed on the suspension,
a head mounted on the mounting member and including an electrode, for writing or reading information on or from the recording medium, and
a first bonding member made of a hot-melt adhesive, fixing the electrode to the electrode pad.