JPH0632943U - Ventilation - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to firmly fix the main body to the ceiling without impairing the workability of the ventilation device, and to prevent the loss of the holder securely. [Structure] A cylindrical portion to be inserted into an opening portion 3 provided in a ceiling surface 2, and a flange portion 6 having a plurality of fixing holes 8 fixed to a plurality of fixing screws 7 at a peripheral edge of the opening portion 3 is provided. Body 1
And a blower 11 disposed inside the main body 1, and the diameter of the fixing hole 8 is smaller than the outer diameter of the fixing screw 7 on the front side and larger on the rear side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ventilation device that is inserted and installed in an opening provided on a ceiling surface or a room wall and discharges dirty air in a room.

[0002]

[Prior art]

 Heretofore, this type of ventilator has generally been configured, for example, as disclosed in Japanese Utility Model Laid-Open No. 3-111842. The configuration will be described below with reference to FIGS.

As shown in the figure, 101 is a main body including a fan 102, a motor 103, etc., and a box-shaped outer casing 106 having a suction port 104 on the lower surface and a discharge port 105 on the side surface. A flange portion 108 having a plurality of mounting holes 107 is provided around the. An attachment screw holder 113, which will be described below, is provided below the attachment hole 107 of the flange portion 108. This attachment screw holder 113 has an attachment plate 109 fixed to the outer periphery of the attachment hole 107 of the flange portion 108 with an adhesive or the like at the upper end of a tubular portion 112 having a hole portion 113A communicating with the attachment hole 107. In addition, it has a plurality of grooves 110 in the vertical direction of the tubular portion 112 and a plurality of claws 111 for temporarily fixing the mounting screw 116 to the lower end portion.

In the above structure, in order to mount the ventilation device on the ceiling 115, the mounting plate 109 of the mounting screw holder 113 is bonded to the flange portion 108 of the box-shaped outer casing 106 of the main body 1 in advance with an adhesive or the like. In addition to mounting, the fixing screw 116 is temporarily fixed to the mounting screw holder 113, the main body 101 is supported at the mounting position of the ceiling 115 with one hand 118, and the driver 117 is held with the other hand 118 to mount. By tightening the screws 116 to the wooden frame 114 through the mounting holes 107 in the flange portion, the mounting work can be performed by one person to improve the construction work efficiency.

[0005]

[Problems to be solved by the device]

 In such a conventional ventilation device, since the groove 110 is provided in the vertical direction of the cylindrical portion 112 of the mounting screw holder 113, the mounting screw 116 is tightened when the main body 101 is fixed to the ceiling 115. And the cylindrical portion 112 of the mounting screw holder 113 expands outward, and the main body 101 cannot be firmly fixed, or the mounting screw holder 113 is a separate part from the main body 101. Therefore, there was a problem that it might be lost.

The present invention solves the above problems, and provides a ventilation device capable of securely fixing the main body to the ceiling without impairing the workability and reliably preventing the attachment screw holder from being lost. Is intended.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has a main body having a cylindrical shape which is inserted into an opening provided in a ceiling surface or a room wall and has a flange portion fixed to the peripheral edge of the opening with a fixing screw, The main body includes a blower disposed inside the main body, and the flange portion has a plurality of fixing holes through which the fixing screws are inserted, and the diameter of the fixing holes is smaller on the front side than the outer diameter dimension of the fixing screws. The structure of the ventilator is large on the rear side.

[0008]

[Action]

 According to the present invention, when the ventilation device is mounted on the ceiling surface, the fixing screw is inserted into the fixing hole of the main body and temporarily fixed, and the main body is supported at the mounting position on the ceiling with one hand. Then, by holding the screwdriver with the other hand and tightening the fixing screw, the installation work of the main body can be done by one person, and the fixing hole is integrally provided in the flange part of the main body, and its diameter is fixed. It is a simple one that the front side is smaller and the rear side is larger than the outer diameter of the screw, there is no deformation due to tightening of the fixing screw, and there is no need to additionally provide a holding part for temporary fixing of the fixing screw. Therefore, the holding parts will not be lost.

[0009]

【Example】

 Hereinafter, the present invention will be described with reference to FIGS.

As shown in the figure, the main body 1 is provided so as to project from the opening 3 of the ceiling surface 2 to the back of the ceiling 4 and is inserted and arranged inside the pipe 5 connected to the duct 5A communicating with the outdoor 4A. A cylindrical portion is formed at its lower end with a flange portion 6 extending to the outside of the opening portion 3. A plurality of fixing screws 7 for fixing the main body 1 to the peripheral edge of the opening portion 3 are inserted into the flange portion 6. Fixing holes 8 are provided. The fixing hole 8 is formed such that the front side is smaller and the rear side is larger than the outer diameter of the fixing screw 7, and the fixing screw 7 can be temporarily fixed by inserting from the front side. Further, inside the main body 1, a blower 11 composed of an electric motor 10 to which blades 9 are fixed is arranged. Further, a louver 12 is attached to the lower part of the main body 1. On the other hand, a vent cap 14 for preventing intrusion of rainwater is provided on the outer wall 13 of the duct 5A on the outdoor 4A side.

A method of constructing the ventilation device configured as described above will be described below. The fixing screw 7 is inserted into the fixing hole 8 of the main body 1 in advance and temporarily fixed, the main body 1 is inserted into the pipe 5, and the flange portion 6 is brought into contact with the lower surface of the ceiling 2 with one hand. It is possible to carry out the installation work of the main body 1 by one person by supporting it with 15, holding the driver 17 in the other hand 16 and tightening the fixing screw 7. At this time, the fixing hole 8 is provided directly on the flange portion 6 of the main body 1, and the shape thereof is a simple one in which the front side is smaller and the rear side is larger than the outer diameter dimension of the fixing screw 7. Even if the body 1 is strongly tightened to increase the fixing strength, the body 1 is not deformed, and it is not necessary to separately prepare a holding component for temporarily fixing the fixing screw 7.

[0012]

As is apparent from the above embodiments, according to the present invention, since the fixing hole for temporarily fixing the fixing screw is integrally provided in the flange portion of the main body, the workability is not impaired. Ventilation device with the effect that the main body can be securely attached to the ceiling and fixed, and it is not necessary to separately provide a holding component for temporary fixing of the fixing screw, and the loss of the holding component can be reliably prevented. Can be provided.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an attached state of a ventilation device according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a fixing hole of the ventilation device.

FIG. 3 is a cross-sectional view showing how a conventional ventilation device is attached.

FIG. 4 is a sectional view of a holder of the ventilation device.

FIG. 5 is a perspective view of a holder of the ventilation device.

[Explanation of symbols]

 1 Main Body 2 Ceiling Surface 3 Opening 6 Flange 7 Fixing Screw 8 Fixing Hole 11 Blower

Claims (1)

[Scope of utility model registration request] 1. A main body having a cylindrical shape which is inserted into an opening provided in a ceiling surface or a chamber wall and has a flange portion fixed to a peripheral edge of the opening with a fixing screw, and which is disposed inside the main body. A ventilation device in which the flange portion has a plurality of fixing holes through which the fixing screws are inserted, and the diameter of the fixing holes is smaller on the front side than on the outer diameter of the fixing screws and larger on the rear side. .