[Problems] Objects include providing a hook member that can be easily attached to a coil spring and providing a tension spring that includes the hook member.
[Solution] A hook member used for being attached to an end part of a coil spring in its axial direction is provided. The hook member includes a hook part for hooking a target member and an attachment part capable of being screwed with an outer circumferential surface and/or an inner circumferential surface of the coil spring. The attachment part has a sliding surface slidable with the outer circumferential surface and/or inner circumferential surface of the coil spring, and the sliding surface has a reverse shape of the outer circumferential surface and/or inner circumferential surface of at least the first turn constituting the coil spring.
In this ventilation device provided with a fireproof function, an elongated body 10 has: a main wall portion 12a in which a ventilation hole 12x is formed; and a ventilation passage 14 contiguous to the ventilation hole 12x. An operating plate 20 is movably supported by the body 10, and opens/closes the ventilation hole 12x of the main wall portion 12a. In the ventilation passage 14, first and second foaming materials 41, 42 extending in a longitudinal direction of the body 10 are mounted. The first foaming material 41 foams at a temperature lower than the second foaming material 42. The second foaming material 42 has a tape shape and includes a thermally expandable graphite. The first foaming material 41 includes thermally expandable polymeric microparticles each of which is obtained by enclosing a volatile hydrocarbon with thermoplastic resin, and is coated onto the second foaming material 42. In case of fire, the ventilation passage 14 is blocked by foaming of the first foaming material 41 at 100-200°C. The ventilation passage 14 is blocked by foaming of the second foaming material 42 at 250-300°C.
A device body 10 of a ventilation device comprises an inside first main wall 12a that has a first ventilation opening 12x, and an outside second main wall 15a that has a second ventilation opening 15x. The ventilation device further comprises a first and second operation plate 20, 30 that are supported in the device body 10 so as to be able to rotate, and a first and second spring 26, 36 that bias the first and the second operation plate 20, 30 in a direction to separate, respectively, from the first and second main wall 12a, 15a. First and second packing 25, 35 that are elastic and permeable to air are mounted, respectively, on the first and second operation plate 20, 30. When the outside is at positive pressure during strong winds, the first operation plate 20 approaches the first main wall 12a due to the wind pressure from the outside and ventilation is performed through only the first packing 25. When the outside is at negative pressure during strong winds, the second operation plate 30 approaches the second main wall 15a due to the wind pressure from the inside and ventilation is performed through only the second packing 35.
E06B 7/10 - Aménagements particuliers ou dispositions en rapport avec les portes ou fenêtres pour assurer la ventilation, p. ex. à travers des doubles fenêtresAménagement de rosaces de ventilation par structure particulière des éléments de châssis
The ventilation device (2) is provided with a device body (10), a moving plate (20), and packing (25). The device body (10) has a main wall (12a) having a ventilating opening (12x) formed thereon. The moving plate (20) is turnably supported on the device body (10) in the vicinity of the main wall (12a) and on the outdoor side. The moving plate (20) is maintained, by its own weight and/or the force of a spring (30), in an open position where the moving plate (20) is separated from the main wall (12a; 52) so as to open the ventilating opening (12x; 52x), and is moved by outdoor wind pressure from the open position to a closed position where the moving plate (20) is brought close to the main wall (12a) so as to cover the ventilating opening (12x). The packing (25) has elasticity and air permeability and is mounted on the surface of the moving plate (20) which faces the main wall (12a) in a position separated from the turning fulcrum of the moving plate (20). The packing (25) allows passage of air while being sandwiched between the main wall (12a) and the moving plate (20) when the moving plate (20) is in the closed position. With the above-described configuration, it is possible to excellently control the volume of air taken into a building and prevent the generation of noise when the wind is strong outdoors.
F24F 13/10 - Organes de réglage de l'écoulement d'air, p. ex. persiennes, grilles, volets ou plaques directrices mobiles, p. ex. registres
F24F 13/14 - Organes de réglage de l'écoulement d'air, p. ex. persiennes, grilles, volets ou plaques directrices mobiles, p. ex. registres à éléments basculants, p. ex. persiennes
Provided is a double window capable of automatically adjusting the amount of ventilation according to the outdoor temperature. A double window (2) is provided with an outdoor-side shielding structure (5A) and an indoor-side shielding structure (5B), and an insulated space (6) is formed between the shielding structures (5A, 5B). A ventilating device (8A) provided in the outdoor-side shielding structure (5A) and a ventilating device (8B) provided in the indoor-side shielding structure (5B) are each provided with a device body (10) which has a ventilation passage (16), an actuating plate (20) which is supported in a movable state by the device body (10) and adjusts the opening area of the ventilation passage (16) according to the position thereof; and a temperature sensitive actuator (30). The temperature sensitive actuator (30) moves the actuating plate (20) in response to the temperature on the outdoor side to automatically adjust the opening area of the ventilation passage (16) such that the opening area becomes smaller as the temperature becomes lower. To obtain the same opening area of the ventilation passage (16), the temperature required by the temperature sensitive actuator (30) of the indoor-side ventilating device (8B) is higher than the temperature required by the temperature sensitive actuator (30) of the outdoor-side ventilating device (8A).
A device body (2) is provided with a cam block (10). The cam block (10) is provided with a first sloped surface (12) sloped in the left and right directions, and also with a first plate member (31) consisting of a metallic plate material. The first plate member (31) is disposed so that the first plate section (31a) thereof is in contact with the first sloped surface (12). A third plate section (31c) is interconnected with the right lower end of the first plate member (31) with a circular arc section (31e) located therebetween. The third plate section (31c) can be elastically deformed in the vertical direction. An opening/closing member (6) is provided with a first contact section (51). The first contact section (51) is pressed downward by the third plate section (31c), and as a result, the opening/closing member (6) is pressed downward. The downwardly pressed opening/closing member (6) is pressed against the bottom wall (2d) of the device body (2) with a seal member (61) therebetween.
An operation plate (31) for the automatic opening and closing of a ventilation device (10) is pressed to one of an open position and a closed position by a first pressing means (38). Also, the operation plate (31) is pressed by a second pressing means (39) to the side opposite the side toward which the first pressing means (38) presses the operation plate (31). First springs (33) which consist of a shape memory alloy are used as the first pressing means (38). The first springs (33) are arranged in the direction perpendicular to the direction of pressing by the first springs (33). As a result of this configuration, without a large change in dimensions of the shape memory alloy springs, such as the coil diameter and the wire diameter, the ventilation device can reliably comply specifications including the ventilation performance.
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