Vibrating member attachment structure
A vibrating member attachment structure includes: a sound insulation layer made of elastomer and including an accommodating portion that defines an accommodating space in which a vibrating member is accommodated, and a folded-back portion having a hem portion connecting to the accommodating portion, a contact portion placed so as to face the hem portion and contacting a mating member, a joint portion connecting the hem portion and the contact portion, and an insertion space defined by the hem portion, the contact portion, and the joint portion; a support member having higher rigidity than the sound insulation layer and including a sealing portion that seals an opening of the accommodating space, and an insertion portion that connects to the sealing portion and that is inserted in the insertion space; and an attachment member and including a shaft portion and a deformation suppressing portion.
1. A vibrating member attachment structure, comprising:
a sound insulation layer made of an elastomer and including
an accommodating portion that defines an accommodating space in which a vibrating member that vibrates is accommodated, and
a folded-back portion having a hem portion connecting to the accommodating portion, a contact portion placed so as to face the hem portion and contacting a mating member, a joint portion connecting the hem portion and the contact portion, and an insertion space defined by the hem portion, the contact portion, and the joint portion;
a support member having higher rigidity than the sound insulation layer and including
a sealing portion that seals an opening of the accommodating space, and
an insertion portion that connects to the sealing portion and that is inserted in the insertion space; and
an attachment member being not in contact with the insertion portion and including
a shaft portion that extends through the folded-back portion with the insertion portion being inserted in the insertion space to attach the folded-back portion to the mating member, and
a deformation suppressing portion that suppresses elastic deformation of the folded-back portion due to an attachment load.
2. The vibrating member attachment structure according to claim 1 , further comprising:
a sound absorption layer that is made of a foamed resin, that covers outside of the vibrating member, and that is accommodated in the accommodating space.
3. The vibrating member attachment structure according to claim 2 , wherein
the sound absorption layer contains magnetic fillers.
4. The vibrating member attachment structure according to claim 1 , wherein
the contact portion has at least one of a line contact portion that line-contacts the mating member, and a point contact portion that point-contacts the mating member.
5. The vibrating member attachment structure according to claim 1 , wherein
the hem portion has a smaller thickness than the contact portion.
6. The vibrating member attachment structure according to claim 1 , wherein
the accommodating portion has a window portion that allows the accommodating space to communicate with outside, and
the vibrating member has a protruding portion that protrudes to the outside from the accommodating space through the window portion.
7. The vibrating member attachment structure according to claim 6 , wherein
the window portion extends to the hem portion.
8. The vibrating member attachment structure according to claim 1 , wherein
the sound insulation layer has on its outer surface a buffer portion that reduces shock that is caused when the sound insulation layer contacts an adjoining member.
9. The vibrating member attachment structure according to claim 1 , wherein
at least one of the sound insulation layer and the support member has a shift suppressing portion that suppresses relative shifting of the other.