JPH02133739A - Device for ventilating hole recessed in ceiling - Google Patents

Abstract

PURPOSE:To facilitate the work of attaching and detaching a ventilating grille and also related inspection by winding cords, each with a hook, on reels in such a manner as to make the device compact in structure and allow the cords to be drawn to a long length downward. CONSTITUTION:By pulling a hook 17 downward a cord 16 is reeled out with rotation of a reel 2 and the hook 17 can be made to hang to a long length from the ceiling L so that the hook 17 can be easily hitched into a fastening means 15 on a ventilating grille 14 and the hook 17 when hitched to the ventilating grille 14 can be pulled downward by hitching the ventilating grille 14 to a catch below. By reeling out the cord 16 the reel 2 is turned clockwise and a coil spring 20 is wound into a radially smaller coil which by so becoming is given rotative force effective on the reel 2 counterclockwise; this force winds up the cord 16, raises the ventilating grille 14, and presses it against the ceiling L.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial application field The present invention relates to vent devices in ceiling-embedded ventilation fans, air conditioners, intake devices, blow-off devices, etc. 4. (b) Conventional technology of the present invention Japanese Unexamined Patent Publication No. 56-71740 as a technology for h-line
There is a duct ventilation fan described in the publication. A tactile ventilation fan consists of a holder installed in the main body frame installed in the ceiling, a spring body latched to a part of the holder, and a wire connected to the spring body via a roller. The grill is equipped with a rope and a hook at the end of the wire rope, and the grill is held by connecting the hook to an eye bolt provided on the grill.

However, the length of the wire rope that can be pulled down is regulated by the length of the yurt, the length of the body, and the dimensions of the body frame, making it impossible to widen the gap between the grill and the ceiling. In addition, since the spring body and wire lobes are arranged so as to straddle the intake port, this creates ventilation resistance for the exhaust flow and allows dust contained in the exhaust flow to adhere to the main body and wire lobes. It is something.

(c) Problems to be Solved by the Invention The present invention provides a ceiling-embedded vent device that can increase the distance from the ceiling in a vent grill that covers an opening formed in the ceiling, and does not create ventilation resistance. 1. (d) Means for Solving the Problems The present invention provides a ventilation frame with an opening at the bottom that is inserted into an opening formed in the ceiling, and a cover that can open and close the opening at the bottom of the ventilation frame. a winding body pivotally supported on opposing inner surfaces of the ventilation frame; a saw string that is wound around the winding body and forms a hook body at one end for connecting to a locking portion of the ventilation grill; This problem is solved by means of forming a vent device with a mainspring that biases the winding body in the string winding direction and also provides a force to pull up the vent grille.

The ventilation frame may be a simple box to which an air supply tact or exhaust tact is connected, or may be the main body frame of a ceiling-embedded ventilation fan in which an electric motor and blower blades are installed.

The winding body may be a cylindrical body, around which the same body is wound in one layer, or it may be formed of a disc body with an open hole on the outer periphery, and the string may be wound in multiple layers in the groove. good.

The string is made of wire robe, piano wire, kite string, Tenges, etc.

(E) Function The present invention allows long strings to be stored in a small space by wrapping the cord around the winding body, and the winding body is given winding force by a spring and supports the weight of the ventilation grill. The ventilation grill can be supported without wobbling by applying pulling force.

(f) Example 1 Cross-sectional view of IQ air fan 1 for ceiling and winding body 2 in Fig. 2
The configuration of the present invention will be specifically explained based on a partially sectional front view of the portion and a sectional perspective view of the third force winding body 2 portion.

The ceiling ventilation fan 1 has a ventilation frame 4 with an opening 3 formed on its lower surface as a ventilation frame, and is formed by bending and joining sheet metal. A mounting collar 5 is formed on the opening edge of the ventilation frame 1, and is fixed with screws 8 to a wooden frame 7 in an opening 6 formed in the ceiling. A partition plate 10 with an intake port 9 formed therein is formed in the ventilation frame 1, and a blower blade 11 is disposed opposite the intake port 9, and an electric motor 12 for driving the blower blade 11 is attached. There is.

On the side wall of the ventilation frame 4, there is an opening D6.3 formed by the blower vane 11, and a duct-connected exhaust port (not shown) for discharging the air sucked in through the intake port 9 to the outside through a duct. ) is formed.

The opening 6 formed in the ceiling is covered with a ventilation grill 14 in which a large number of ventilation holes 13 are formed, and can be pulled down and removed. Ventilation frame 1 on the opening 6 side (top surface) of the ventilation grill 14
A locking portion 15 is formed near the inner surface of both sides of 1.

The ventilation grill 14 is supported so as to be pressed against the ceiling, and when the ventilation grill 14 is pulled downward, it can be moved further away from the ceiling. A hook body 17 formed at the lower end of the cord 16 to be wound up is hooked onto a locking part 15 of the ventilation grille 14. In this structure, the hooking body 17 is a hook, and the hooking body 17 is hooked in the hole of the locking part 15 (although it hangs), the locking part 15 is hook-shaped, and the hooking body 17 is a plate with a hole or a string 16 is looped. It may also be a

The winding body 2 is formed of a bottomed cylindrical body and a hollow cylindrical body whose opening is closed with a lid. The winding body 2 is the ventilation frame body 1
It is rotatably supported by a shaft body 19 whose both ends are fixed to a pair of pivot plates 18 protruding from the inner surface of the body. A senmai 20 is stored in the winding body 2, and one end is connected to the winding body 2 and the other end is connected to the shaft body 19.
Fixed to.

The string body 1 does not have the hook body 17 formed on the outer periphery of the winding body 2.
The string 16 to which one end of the string 16 is fixed is wound around the winding body 2 as shown in FIG. Let it droop.

When the hook 17 is pulled downward, the winding body 2 rotates and the string 16 is unwound to pull the hook 17 from the ceiling I-.
It is possible to hang the hook for a long time, and although it is easy to hook the hook body 17 on the hooking part 15 of the ventilation grill 14,
4, it can be pulled down by hooking the ventilation creel 14 downward.

When the winding body 2 is rotated by unwinding the string body 16, the third
As the mainspring 20 rotates to the right in the figure and its diameter becomes smaller, a force is applied to the mainspring 20 to rotate the winding body 2 to the left, which becomes a force for winding the cord 16, thereby creating ventilation. Pull out grilles 1 and 1 and push them toward the ceiling ■-.
The guide regulating body 21, which acts as a force to prevent the hook 17 from being completely wound up on the winding body 2, prevents the hook body 17 from being completely wound up on the winding body 2, and even in the state shown in FIG. A force in a direction to wind up the string 16 is applied to the chair 1.

(G) Effects of the Invention The present invention has a configuration in which the cord forming the hook is wound up with a winding body, so that it can be formed compactly and the cord can be pulled down for a long time, which improves the workability of attaching and detaching the ventilation grill. In addition to the direction -L, inspection work can also be performed satisfactorily.

[Brief explanation of drawings]

+2] indicates the present invention, FIG. 1 is a cross-sectional view, FIG. 2 is a front view of the winding body, and FIG. 3 is a perspective view of the same cross-section.

Claims (1)

[Claims] 1. A ventilation frame with a bottom opening that is inserted into an opening formed in the ceiling, a ventilation grill that covers the bottom opening of the ventilation frame so that it can be opened and closed, and a winding body that is pivotally supported on the opposing inner surface of the ventilation frame. , a string that is wound around the winding body and has a hook formed at one end for hooking onto the locking portion of the ventilation grill; and a string that biases the winding body in the winding direction of the string and provides a force for pulling up the ventilation grill. A ceiling-embedded vent device equipped with a mainspring.