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1. US20200088440 - VENTILATION MEMBER

注意: このテキストは、OCR 処理によってテキスト化されたものです。法的な用途には PDF 版をご利用ください。

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Claims

1. A ventilation member to be attached to an opening of a housing, the ventilation member comprising:
a support having a through hole that serves as an air passage between inside and outside of the housing upon attaching the support to the opening; and
an air-permeable membrane disposed on the support and closing the through hole,
the support comprising:
a supporting portion in which the through hole is provided and at which the air-permeable membrane is disposed, and
an insertion portion extending from the supporting portion and having an end with a hook, wherein the insertion portion bends in a direction closer to a central axis of the ventilation member while the hook is passing through the opening by being inserted into the opening, and fixes the ventilation member to the opening with the hook engaging the housing after passing through the opening,
the ventilation member having a stopper portion with which bending of the insertion portion in the direction is restricted within an elastically deformable range of the insertion portion during the insertion into the opening.
2. The ventilation member according to claim 1, wherein the supporting portion has the stopper portion, independently from the insertion portion, and the stopper portion restricts bending of the insertion portion in the direction within the elastically deformable range of the insertion portion by making contact with the insertion portion bending in the direction during the insertion into the opening.
3. The ventilation member according to claim 2, wherein the stopper portion is a columnar portion extending from the supporting portion.
4. The ventilation member according to claim 2 or 3, wherein the support has two or more of the insertion portions,
said two or more of the insertion portions being disposed to overlap an imaginary circle centered on the central axis and being saparated from one another along the circle as viewed along the central axis from the end side of the insertion portions,
the stopper portion being disposed to overlap the circle and lie between the insertion portions that are adjacent one another along the circle, as viewed along the central axis from the end side of the insertion portions.
5. The ventilation member according to claim 4, wherein an imaginary circle centered on the central axis and contacting an outer circumferential surface of the stopper portion has a diameter equal to or less than the diameter of an imaginary circle centered on the central axis and contacting outer circumferential surfaces of the insertion portions, as viewed along the central axis from the end side of the insertion portions.
6. The ventilation member according to claim 2 or 3, wherein the stopper portion is disposed between the insertion portion and the central axis, or overlaps the central axis, as viewed along the central axis from the end side of the insertion portion.
7. The ventilation member according to claim 6, wherein the stopper portion is disposed to overlap the through hole as viewed along the central axis from the end side of the insertion portion.
8. The ventilation member according to claim 7, wherein inside of the stopper portion has the air passage being in communication with the through hole.
9. The ventilation member according to claim 1, wherein the support has two or more of the insertion portions,
said two or more of the insertion portions each having the stopper portion, and
said two or more of the insertion portions upon being equally bent in the direction and upon the stopper portions of the adjacent insertion portions making contact with one another having a bend directed in the direction and confined within the elastically deformable range.
10. The ventilation member according to claim 9, wherein the stopper portions are located at side surfaces of the insertion portions.
11. The ventilation member according to claim 9 or 10, wherein said two or more of the insertion portions are disposed to overlap an imaginary circle centered on the central axis and are separated from one another along the circle, as viewed along the central axis from the end side of the insertion portions.
12. The ventilation member according to claim 1, wherein the insertion portion has an inner side surface having a portion that protrudes into an inner side of an imaginary circle centered on the central axis and running through end portions of the inner side surface in a width direction of the inner side surface, as viewed along the central axis from the end side of the insertion portion.
13. The ventilation member according to claim 12, wherein the inner side surface is a flat surface.
14. The ventilation member according to claim 1, wherein the ventilation member further comprises a sealing member disposed around the insertion portion.
15. The ventilation member according to claim 1, wherein the ventilation meber further comprises a protecting cover for protecting the air-permeable membrane.