JPH0311643Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is an improvement of a ventilation unit that is fitted into a duct buried in the wall of a building, and in particular, an improvement of a ventilation unit that is inserted between the duct and the ventilation unit. The present invention relates to an improvement in a stopper member for reinforcing the fitted state of the two.

<Prior Art> Conventionally, as this type of ventilation unit, one shown in FIG. 4, for example, is known.

<Problems to be solved by the invention> However, in the case of such a conventional ventilation unit 1, the fitting state with the duct 2 may be affected due to the tight fit or distortion of the cross-sectional shape of the duct 2. It was easy to cause "rattle". The cause of this "rattling" was difficult to understand, and no solution was provided. However, the reason for this is that the pressing contact of the pressing part 4 of the stopper member 3 to the inner duct 2 with the duct 2 is in a plurality of points, and moreover, the arrangement of the plurality of contact points 6 is on the axis of the duct 2. It is perpendicular to the direction (direction of arrow A), so the pressing force is likely to be insufficient,
Furthermore, it was discovered that the ventilation unit 1 makes a "Yajirobee"-like movement (arrow B) with the contact point 6 as a fulcrum, and by solving this cause, the present invention was provided.

<Means for solving the problem> That is, as a means for solving the above problem, in this invention, the pressing part of the stopper member is pressed against the duct in a substantially linear direction in a direction parallel to the axial direction of the duct. The gist is to have a bent shape with the contact area as the apex, and to generate reinforcing elastic force through elastic deformation of the bent shape with the linear pressure contact area as a fulcrum.

<Operation> Next, the operation will be explained with reference to an embodiment shown in FIGS. 1 and 2.

Part 1 of the stopper member 10 that presses against the inner duct 12
1 is provided with a portion 15 that presses into contact with the duct 12 on a line parallel to the axial direction of the duct 12 (direction of arrow A).
The duct 12 is pressed by a line or elongated surface parallel to the axial direction of the duct 12, and the fitting part 13 is also pressed by the reaction force, so that the maintenance of the fitted state with the duct 12 and the fitting part 13 is mutually ensured. Also, the ventilation unit 14
The direction in which "Yajirobee" movement ("rattling") is likely to occur is pressed and supported by the linear or elongated surface, and "rattling" of the ventilation unit 14 is prevented.

<Example> Hereinafter, details of this invention will be explained with reference to FIGS. 1 and 2 showing a first example thereof.

The ventilation unit 14 mainly consists of a face part 20 and a fitting part 13, and a plurality of stopper members 10 are arranged in the fitting part 13.

The face member 20 is formed by press-molding a circular iron plate, and its folded edge 21 connects the fitting part 1.
It is fitted into the stepped portion 22 of No. 3.

The fitting part 13 connects the ventilation unit 14 to the duct 12.
A fitting tube 23 and a face member 20 for fitting into the
The stepped portion 22 is fitted with its folded edge 21.
and a calyx edge 24.

A stopper member 10 is provided on the outer periphery of this fitting tube 23.
are four at approximately equal intervals, and the pressing parts 11 are the ducts 12.
are arranged so as to be in pressure contact with each other on a line parallel to the axial direction (direction of arrow A) of the duct 12.

The stopper member 10 is made by cutting an iron plate into a substantially T-shape with a constant width.The part that corresponds to the body of the T-shape is a fixed part 25, and the part that corresponds to the head of the T-shape is a part that presses against the duct 12. 11. The side of the fixed part 25 connected to the pressing part 11 is the pressing part 1.
1, and the base end of the fixing part 25 has a hook part for hooking onto the edge of the fitting tube 23 by folding it back to the back side. 26 are provided. The pressing part 11 is bent into an arc shape in a direction perpendicular to the fixing part 25, and forms a leaf spring structure due to the deformation of this curved surface, and the top of this curved surface extends along a line parallel to the axial direction of the duct 12. The portion 15 is in pressure contact with the portion 12.

The function of the stopper member 10 in this ventilation unit 14 will be explained below.

The approximately T-shaped stopper member 10 as described above is hooked onto the edge of the fitting tube 23 by its hook portion 26, and its pressing portion 11 is held on a line parallel to the axial direction of the duct 12. Since the portion 15 that presses into contact with the duct 12 is provided, the duct 12 is pressed by the portion 15 on a line parallel to the axial direction of the duct 12 or on a long and narrow surface, and the fitting portion 13 is pressed by the reaction force. Therefore, the maintenance of the fitted state with the duct 12 and the fitting part 13 is mutually ensured, and the direction in which the ventilation unit 14 is likely to cause "Yajirobee" movement ("rattling") is approximately linear. In other words, the ventilation unit 14 is pressed and supported by a line or elongated surface, thereby preventing the ventilation unit 14 from rattling.

FIG. 3 shows a second embodiment, in which the bending of the pressing portion 31 of this stopper member 30 is in an inverted V shape, and the top of this inverted V shape is connected to the duct 12.
The pressure contact portion 15 is made into a sharper shape so that the pressing force can be easily concentrated. Further, in this stopper member 30, the fixing part 32 is not provided with a "hanging part" as in the first embodiment, and the fixing part 32 is not provided with a "hanging part" as in the first embodiment.
It is placed on the fitting tube 23 by two spot welding or screw fixing. The other points are substantially the same as those of the first embodiment, so the explanation will be omitted.

It should be noted that the "stopper members" in each of the above embodiments relate to cut iron plates, but are not limited to these. Of course, it may be ``.''.

<Effects> As explained above, this invention is a part of the stopper member that reinforces the fitting between the duct and the fitting part with elastic force in the ventilation unit fitted into the duct buried in the wall of the building. Since it has a pressure contact part on a line parallel to the axial direction of the duct, it has the excellent effect of effectively preventing the "Yajirobei" movement of the ventilation unit with respect to the duct, that is, "rattling". There is.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing a first embodiment of the invention, FIG. 2 is a schematic perspective view of a stopper member according to the first embodiment, and FIG. 3 is a schematic perspective view of a stopper member according to the second embodiment. FIG. 4 is a schematic perspective view showing a conventional ventilation unit, and FIG. 5 is a schematic cross-sectional view taken along the arrow line in FIG. 4. 1, 14... Ventilation unit, 2, 12... Duct, 3, 10... Stopper member, 4, 11, 31
...Pushing part, 5, 13... Fitting part.

Claims (1)

[Claims for Utility Model Registration] It has a fitting part that is fitted into a duct buried in the wall of a building, and by being attached to this fitting part and interposing between the duct and the fitting part, the duct In a ventilation unit equipped with a stopper member that reinforces the fitted state of the fitting part and the fitting part with elastic force, the pressing part of the stopper member presses the duct in a substantially linear direction in a direction parallel to the axial direction of the duct. It is characterized in that it has a bent shape with the contact area as the apex, and is configured to generate reinforcing elastic force through elastic deformation of the bend shape using the linear pressing contact area as a fulcrum. ventilation unit.