IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0855700
(2004-05-28)
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발명자
/ 주소 |
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출원인 / 주소 |
- Macauto Industrial Co., Ltd.
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
2 |
초록
▼
A film valve assembly for a heating, ventilation and air conditioning system includes a frame, two roller mechanisms disposed on the frame, and a film valve disposed between the roller mechanisms under tension. A tension unit includes a tension rod having two ends that are connected respectively to
A film valve assembly for a heating, ventilation and air conditioning system includes a frame, two roller mechanisms disposed on the frame, and a film valve disposed between the roller mechanisms under tension. A tension unit includes a tension rod having two ends that are connected respectively to first and second supporting seats on the base wall by first and second retaining units. The first retaining unit includes a spring-biased retaining element that is biased to engage a retaining hole in the first supporting seat.
대표청구항
▼
1. A film valve assembly for a heating, ventilation and air conditioning system comprising:a frame including a pair of left and right sidewalls, a base wall interconnecting and disposed between said left and right sidewalls, and a pair of first and second supporting seats projecting from said base w
1. A film valve assembly for a heating, ventilation and air conditioning system comprising:a frame including a pair of left and right sidewalls, a base wall interconnecting and disposed between said left and right sidewalls, and a pair of first and second supporting seats projecting from said base wall and adjacent respectively to said left and right sidewalls, each of said first and second supporting seats being formed with a retaining hole;two roller mechanisms disposed respectively at two opposite sides of said base wall;a film valve disposed between and connected to said roller mechanisms and including a valve portion that is formed with at least one vent hole therethrough; anda tension unit includinga first tension rod disposed between said first and second supporting seats of said frame, anda pair of first and second retaining units connected respectively to two ends of said first tension rod and to said first and second supporting seats of said frame, said first retaining unit including a spring-biased retaining element that is attached to said first tension rod and that is biased to move away from said first tension rod and into said retaining hole in said first supporting seat of said frame, said second retaining unit interconnecting said first tension rod and said second supporting seat of said frame so as to confine said valve portion of said film valve between said first tension rod and said base wall of said frame.2. The assembly as claimed in claim 1, wherein said second retaining unit includes a spring-biased retaining element that is attached to said first tension rod and that is biased to move away from said first tension rod and into said retaining hole in said second supporting seat of said frame.3. The assembly as claimed in claim 2, wherein each of said first and second supporting seats of said frame includes:a vertical retaining wall extending upwardly from said base wall of said frame and parallel to said left and right sidewalls, said retaining wall being formed with said retaining hole in a corresponding one of said first and second supporting seats of said frame;two vertical limiting walls extending respectively and perpendicularly from two opposite sides of said retaining wall and formed integrally with a corresponding one of said left and right sidewalls, said limiting walls flanking said retaining hole in the corresponding one of said first and second supporting seats of said frame; andan inclined guide wall disposed immediately above said retaining hole in the corresponding one of said first and second supporting seats of said frame and having two opposite sides formed respectively and integrally with said limiting walls, an upper end formed integrally with the corresponding one of said left and right sidewalls, and a lower end formed integrally with an upper end portion of said retaining wall so as to define a guide slot that is disposed among said guide wall and said limiting walls and that has a width which corresponds approximately to diameter of said retaining hole in the corresponding one of said first and second supporting seats of said frame, thereby permitting movement of a corresponding one of said retaining elements of said tension unit along said guide slot into said retaining hole in the corresponding one of said is first and second supporting seats.4. The assembly as claimed in claim 1, wherein each of said roller mechanisms includes a mounting shaft disposed fixedly on said frame, a rotating tube sleeved rotatably on said mounting shaft and having an open-ended axial slot, and a biasing member, said biasing members biasing said rotating tubes of said roller mechanisms to rotate relative to said frame in opposite directions, said valve portion of said film valve extending through said axial slots in said rotating tubes of said roller mechanisms, said film valve further including two end films fastened respectively to two opposite sides of said valve portion and disposed respectively within said rotating tubes of said roller mechanisms, each of said end films having a V-shaped cross-section and including two film portions that have respectively two interconnected sides connected fixedly to a corresponding one of said sides of said valve portion of said film valve and that are sized so as to prevent said two film portions from moving through said axial slot in said rotating tube of a corresponding one of said roller mechanisms, thereby retaining said film portions within said rotating tube of the corresponding one of said roller mechanisms.5. The assembly as claimed in claim 1, wherein said base wall of said frame has a planar first wall portion, a planar second wall portion connected fixedly to said first wall portion such that an angle is formed between said first and second wall portions, and a third wall portion connected swingably to said second wall portion.6. The assembly as claimed in claim 5, wherein said frame further includes two pairs of shaft-mounting seats, one pair of said shaft-mounting seats being disposed at a side of said first wall portion of said base wall of said frame distal from said second wall portion of said base wall of said frame, the other of said shaft-mounting seats being disposed at a side of said third wall portion of said base wall of said frame distal from said second wall portion of said base wall of said frame.7. The assembly as claimed in claim 5, wherein said first and second supporting seats are disposed between said first and second wall portions of said base wall of said frame.8. The assembly as claimed in claim 5, wherein said frame further includes a pair of third and fourth supporting seats that project from said third wall portion of said base wall, that are adjacent respectively to said left and right sidewalls, and that are disposed in proximity to said second wall portion of said base wall of said frame, each of said third and fourth supporting seats being formed with a retaining hole, said tension unit further including a second tension rod disposed between said third and fourth supporting seats, and a pair of third and fourth retaining units connected respectively to two ends of said second tension rod and to said third and fourth supporting seats, said third retaining unit including a spring-biased retaining element that is attached to said second tension rod and that is biased to move away from said second tension rod and into said retaining hole in said third supporting seat, said fourth retaining unit interconnecting said second tension rod and said fourth supporting seat so as to confine said valve portion of said film valve between said second tension rod and said base wall of said frame.9. The assembly as claimed in claim 1, wherein said first tension rod is tubular, said retaining element of said first retaining unit of said tension unit being configured as a rod that has an intermediate portion which is formed with an outward flange extending radially and outwardly therefrom, said tension unit further includes:an insert tube unit having an inner end that is press fitted within said first tension rod and that is formed with a first inward flange extending radially and inwardly therefrom, and an outer end that is formed with a second inward flange extending radially and inwardly therefrom so as to define a spring-receiving space between said insert tube unit and said retaining element of said first retaining unit of said tension unit and is between said first and second inward flanges of said insert tube unit, said outward flange of said retaining element of said first retaining unit of said tension unit extending into said spring-receiving space; anda coiled compression spring disposed within said spring-receiving space so as to press said outward flange of said retaining element of said first retaining unit of said tension unit against said second inward flange of said insert tube unit, thereby inserting said retaining element of said first retaining unit of said tension unit into said retaining hole in said first supporting seat of said frame.10. The assembly as claimed in claim 1, wherein said valve portion of said film valve has a base layer made of glass fiber, and two coating layers coated respectively on two opposite side surfaces of said base layer, one of said coating layers being made of silicon, the other of said coating layers being made of a material that is selected from the group consisting of silicon and polyurethane.
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