JP4485777B2 - Shutter with vibration absorption function and ventilator with shutter - Google Patents

Description

  The present invention relates to a shutter with a vibration absorbing function that closes by its own weight and opens by the action of wind pressure, and a ventilator with a shutter.

  The shutter that closes by its own weight and opens by the action of wind pressure is provided at the ventilation opening of the ventilator. The shutter has a structure that does not open even when the outside wind is received, and opens in a substantially horizontal position when receiving the wind pressure from the operation of the blower. Many measures are taken to reduce the impact sound when the shutter is closed. In addition, there exists a technique currently disclosed by patent document 1 as this kind of prior art.

Japanese Patent Laid-Open No. 10-141732

  In a conventional shutter that closes by its own weight and opens by the action of wind pressure, the blade is supported on both sides by a support pin on the upper side, and can rotate about the support pin. The fitting between the support pin and the blade is loose so that the blade can freely rotate. The blade opens in a substantially horizontal position by the action of wind pressure and stabilizes by hitting the stopper, but depending on the magnitude of the pressure loss in the air passage, it does not open until the blade hits the stopper, and it opens in an unstable state. Sometimes. In this state, the support pin and the fitting portion come into contact with the vibration of the blade, and an abnormal noise such as rattling occurs. As a measure to suppress the occurrence of this abnormal noise, lubricating oil has been applied to the mating part with the support pin so far, but the workability of assembly is significantly reduced, and there is variation in the application of lubricating oil, and the quality is not stable. There is a problem.

  The present invention has been made in order to solve the above-described problems, and its purpose is to obtain a shutter with a vibration absorption function capable of suppressing the occurrence of abnormal noise at an opening degree that is not in a fully open state. It is to obtain a ventilator with a shutter equipped with such a shutter.

In order to solve the above-described problems, the present invention is supported by a support pin so as to be pivotable from the left and right directions by a support pin, and is maintained in a state in which the ventilation opening is closed by its own weight in a free state and is supported by ventilation. For a device having a blade that pivots about a pin to open the ventilation opening, a means for providing the support pin with elasticity that can absorb vibration of the blade in the open state is adopted.

  By adopting the above means, it is possible to suppress the generation of abnormal noise by absorbing the vibration of the blade that is in an unstable opening and is oscillating in an unstable state by the elasticity of the support pin, and the operation such as the application of lubricating oil Can be abolished.

  The present invention is implemented as a shutter of a duct ventilation apparatus that exhausts air through a duct. The blade is supported at both ends by a support pin in a ventilation opening for connecting a duct configured sideways to one surface of the main body. In a free state, the blade closes the ventilation opening by its own weight, and opens the ventilation opening by rotating around the support pin with the wind pressure generated by the ventilation of the blower. The support pin is made of an elastic body, provided with slits in the axial direction, and divided into a plurality of portions to give elasticity to absorb blade vibration. Depending on the pressure loss of the duct, the vibration of the blade that oscillates with an opening that is not fully opened but is unstable is absorbed by the elastic deformation of the support pin, and abnormal noise such as rattling occurs. Deterred.

Embodiment 1 FIG.
The present embodiment shown in FIGS. 1 to 4 is installed in a space on the back of a ceiling and the like, and is provided on one surface of a main body box by sucking indoor air from a suction port of a decorative panel attached along the ceiling surface. The present invention relates to a ventilator with a shutter that exhausts air from a ventilation opening through a duct. 1 is a side view of a ventilator with a shutter, FIG. 2 is a front view of the ventilator with a shutter, FIG. 3 is a side view of a blade, and FIG. 4 is a perspective view of a support member.

  In the ventilator with a shutter shown in FIG. 1, a blower is incorporated in a main body box 1 configured as a hexahedron having an open bottom surface. The blower is incorporated with the suction side facing the open bottom surface of the main body box 1 and the discharge side facing the lateral opening opened on the front of the main body box 1. A decorative panel 2 is detachably attached to an open portion of the lower surface of the main body box 1. A duct connection port part 3 is attached to the outside of the opening of the main body box 1. The duct connection port part 3 is a wind tunnel having a ventilation opening 4 communicating with the opening of the main body box 1, the tip side is configured to be duct-connectable as a duct connection port, and the ventilation opening 4 is formed on the base side. A shutter with vibration absorbing function that opens and closes is provided. The shutter with vibration absorbing function is composed of two upper and lower blades 5 and a pair of left and right support members 6 that support the blades 5.

  As shown in FIG. 3, the blade 5 has flanges 7 on the left and right sides of the flat portion, and round holes 8 are formed as fitting portions on the upper left and right sides of the flange 7. As shown in FIG. 4, the support member 6 is an integrally molded product of an elastic body in which a support pin 10 protrudes from the center of the support substrate 9 and stoppers 11 protrude from both sides of the support pin 10. The support pins 10 and the stoppers 11 are fitted in a state of entering into the ventilation opening 4 in a substantially vertical arrangement with the support substrate 9 outside. The support pin 10 is formed in a tapered cylindrical shape having a diameter that fits in the round hole 8 of the blade 5 with a clearance, and is divided into four by slits 12 provided in the axial direction. The slit 12 has a structure that gives the support pin 10 elasticity to absorb the vibration of the blade 5. If the support pin 10 can be given enough elasticity to absorb the vibration of the blade 5, and the support rigidity is maintained, the slit 12 is one. But it can be two or many. The material of the support member 6 is suitably an olefin thermoplastic elastomer, but may be a rubber resin.

  The blade 5 is supported at both ends by the support pin 10 at the ventilation opening 4 and is maintained in a state in which the ventilation opening 4 is closed by its own weight in a free state, and the support pin 10 is pivoted by ventilation from the main body box 1 side. The air opening 4 is opened by rotating in the vertical plane. The fitting between the support pin 10 and the blade 5 is loose so that the blade 5 can freely rotate. The blade 5 opens in a substantially horizontal position by the action of the wind pressure, and is stabilized by hitting the stopper 11. Depending on the magnitude of pressure loss in the air passage on the exhaust side, such as the length of the duct to be connected, the blade 5 may not open to the opening degree where it hits the stopper 11 but may open in an unstable state. In this state, the support pin 10 and the fitting portion come into contact with the vibration of the blade 5, but are absorbed by the elastic deflection of the support pin 10, and no abnormal noise such as rattling occurs. Therefore, the work of applying the lubricating oil to the support pin 10 and the fitting portion, which has been performed as a measure for suppressing the generation of abnormal noise, is unnecessary, and there is no variation in the application of the lubricating oil, and the quality is stable. To do.

It is a side view which shows the ventilator with a shutter. (Embodiment 1) It is a front view which shows the ventilator with a shutter. (Embodiment 1) It is a side view which shows the braid | blade of a shutter with a vibration absorption function. (Embodiment 1) It is a perspective view which shows the supporting member of the shutter with a vibration absorption function. (Embodiment 1)

Explanation of symbols

  4 ventilation openings, 5 blades, 8 round holes, 10 support pins, 12 slits.

Claims (4)

A shutter that opens and closes the ventilation opening,
It is an integrally molded product in which a support pin protrudes in the center of the support substrate and stoppers protrude on both sides of the support pin, and the support pin and the stopper protrude into the ventilation opening in a substantially vertical arrangement with the support substrate facing outward. A support member mounted in a pair with the ventilation opening in a state;
Each by two of the support pins, is rotatably doubly supported supported from the left and right direction, in the free state is maintained in a state of closing the ventilation opening by its own weight, the pivoted support pins in the axial through ventilation Two blades that open the ventilation opening ;
And the support pin is a shutter with a vibration absorbing function provided with elasticity for absorbing vibration of the blade in the open state.   The shutter with a vibration absorption function according to claim 1, wherein the support pin is divided into a plurality of portions by slits provided in an axial direction to provide elasticity for absorbing blade vibration.   The shutter with a vibration absorption function according to claim 1, wherein the support pin is made of an elastic body and is elastically bent to absorb blade vibration.   A ventilator with a shutter, comprising the shutter with a vibration absorbing function according to any one of claims 1 to 3, and exhausting indoor air to the outside by a duct.

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