A ventilation unit (1A) includes: a ventilation member (2) configured to be attached to an opening (11) of a housing (10), the ventilation member (2) including a water-proof gas-permeable membrane (4) for covering the opening (11); a sealing member (6) configured to seal a gap between the housing (1
A ventilation unit (1A) includes: a ventilation member (2) configured to be attached to an opening (11) of a housing (10), the ventilation member (2) including a water-proof gas-permeable membrane (4) for covering the opening (11); a sealing member (6) configured to seal a gap between the housing (10) and the ventilation member (2); and an annular partition wall member (7A) defining an inner space in which the ventilation member (2) is fitted. The partition wall member (7A) is configured to keep in contact with the housing (10), and blocks a clearance formed outside the sealing member (6) and between a peripheral portion of the ventilation member (2) and the housing (10) when the ventilation member (2) is attached to the opening (11) of the housing (10).
대표청구항▼
1. A ventilation structure comprising a ventilation unit and a housing, the ventilation unit comprising:a ventilation member that is attached to an opening of the housing, the ventilation member comprising a water-proof gas-permeable membrane that covers the opening;a sealing member that seals a gap
1. A ventilation structure comprising a ventilation unit and a housing, the ventilation unit comprising:a ventilation member that is attached to an opening of the housing, the ventilation member comprising a water-proof gas-permeable membrane that covers the opening;a sealing member that seals a gap between the housing and the ventilation member; andan annular partition wall member defining an inner space in which the ventilation member is fitted, the partition wall member being kept in contact with the housing, whereinthe ventilation member comprises:a support supporting the water-proof gas-permeable membrane and having an inner gas channel configured to allow the water-proof gas-permeable membrane to communicate with an internal space of the housing; anda cover component covering the water-proof gas-permeable membrane and forming an outer gas channel opening radially outwardly between the cover component and the water-proof gas-permeable membrane and between the cover component and the support,the partition wall member comprises a main body portion held by the support radially from inside, the main body portion being in contact with the housing and allowing at least a portion of an opening of the outer gas channel to be exposed outwardly, andthe partition wall member comprises a jutting portion jutting from the main body portion radially inwardly, the jutting portion being sandwiched between the housing and the ventilation member. 2. The ventilation structure according to claim 1, wherein the partition wall member comprises a peripheral wall rising from the main body portion in such a manner as to form a clearance between the cover component and the peripheral wall, the peripheral wall facing the opening of the outer gas channel. 3. The ventilation structure according to claim 2, wherein the main body portion and the peripheral wall are formed of a hard material, andthe partition wall member has a height equal to or slightly less than a distance from a surface of the housing to a top of the cover component of the ventilation member. 4. The ventilation structure according to claim 1, wherein the partition wall member has a height equal to that of the main body portion. 5. The ventilation structure according to claim 4, wherein the height of the partition wall member is equal to or less than a distance from a surface of the housing to the water-proof gas-permeable membrane of the ventilation member. 6. The ventilation structure according to claim 1, wherein the jutting portion is formed of an elastic material, andthe jutting portion in a natural state has a thickness greater than a distance by which a peripheral portion of the ventilation member is spaced from the housing. 7. The ventilation structure according to claim 1, wherein the cover component comprises: a principal wall facing the water-proof gas-permeable membrane; a plurality of hanging walls hanging downwardly from a peripheral portion of the principal wall and extending beyond the water-proof gas-permeable membrane; and a plurality of inner walls located radially inwardly of the plurality of hanging walls, being in contact with the support, and covering clearances between the plurality of hanging walls so as to hide the water-proof gas-permeable membrane from outside. 8. The ventilation structure according to claim 1, wherein the partition wall member has an outer peripheral surface flaring toward the housing. 9. The ventilation structure according to claim 3, wherein the height of the partition wall member is 90% or more and 100% or less than the distance from the surface of the housing to the top of the cover component of the ventilation member. 10. A ventilation structure comprising a ventilation unit and a housing, the ventilation unit comprising:a ventilation member that is attached to an opening of the housing, the ventilation member comprising a water-proof gas-permeable membrane that covers the opening;a sealing member that seals a gap between the housing and the ventilation member; andan annular partition wall member defining an inner space in which the ventilation member is fitted, the partition wall member being kept in contact with the housing, whereinthe ventilation member comprises:a support supporting the water-proof gas-permeable membrane and having an inner gas channel configured to allow the water-proof gas-permeable membrane to communicate with an internal space of the housing; anda cover component covering the water-proof gas-permeable membrane and forming an outer gas channel opening radially outwardly between the cover component and the water-proof gas-permeable membrane and between the cover component and the support,the partition wall member comprises a main body portion held by the support radially from inside, the main body portion being in contact with the housing and allowing at least a portion of an opening of the outer gas channel to be exposed outwardly, andthe cover component comprises: a principal wall facing the water-proof gas-permeable membrane; a plurality of hanging walls hanging downwardly from a peripheral portion of the principal wall and extending beyond the water-proof gas-permeable membrane; and a plurality of inner walls located radially inwardly of the plurality of hanging walls, being in contact with the support, and covering clearances between the plurality of hanging walls so as to hide the water-proof gas-permeable membrane from outside. 11. The ventilation structure according to claim 10, wherein the partition wall member comprises a peripheral wall rising from the main body portion in such a manner as to form a clearance between the cover component and the peripheral wall, the peripheral wall facing the opening of the outer gas channel. 12. The ventilation structure according to claim 11, wherein the main body portion and the peripheral wall are formed of a hard material, andthe partition wall member has a height equal to or slightly less than a distance from a surface of the housing to a top of the cover component of the ventilation member. 13. The ventilation structure according to claim 10, wherein the partition wall member has a height equal to that of the main body portion. 14. The ventilation structure according to claim 13, wherein the height of the partition wall member is equal to or less than a distance from a surface of the housing to the water-proof gas-permeable membrane of the ventilation member. 15. The ventilation structure according to claim 10, wherein the partition wall member has an outer peripheral surface flaring toward the housing. 16. The ventilation structure according to claim 12, wherein the height of the partition wall member is 90% or more and 100% or less than the distance from the surface of the housing to the top of the cover component of the ventilation member.
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이 특허에 인용된 특허 (7)
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