JPH0135994Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a mounting device for a wall-opening sleeve of a supply/exhaust pipe provided in a combustion device such as a supply/exhaust type heating appliance.

[Technical background of the invention and its problems]

Generally, in a combustion device such as a household air supply/exhaust type heating appliance, the supply/exhaust tube is attached to a wall sleeve for use. Here, heating appliances and the like are not used all year round, and the air supply and exhaust pipes are removed from the wall sleeve during the off-season and reinstalled when the season begins.

FIG. 1 shows the air supply and exhaust pipe 11 in a wall-cut sleeve 1.
2 shows a conventional configuration for installation in In the figure, a support flange 14 is integrally provided on the outer periphery of one end of the sleeve 12 in a direction perpendicular to its axial direction. Further, a mounting flange 15 is provided on the outer periphery of the supply/exhaust pipe 11 so as to face the support flange 14.
has been established. The mounting flange 15 is joined to the support flange 14, and the two are integrally fastened with fixing screws 16, so that the air supply and exhaust pipe 11 is mounted in the sleeve 12 with a predetermined loose fit.

However, in this configuration, since the fixing screw 16 is used, a tool is required, making installation or removal work by a general user troublesome.

[Purpose of invention]

An object of the present invention is to provide a mounting device for an air supply and exhaust pipe that can be mounted and removed with one touch without the need for tools.

[Summary of the invention] The air supply/exhaust pipe mounting device according to the invention includes a support flange formed on the outer periphery of one end of a stationary sleeve along a direction perpendicular to the axial direction thereof, and a support flange that is loosely inserted into the sleeve. A mounting flange formed on the outer periphery of the air supply/exhaust pipe to face the above-mentioned support flange is provided. Protrusions to prevent displacement that engage with the outer edge of the mounting flange are provided at two opposing locations, a holder is provided at the other location to hold the outer edge of the mounting flange, and the remaining one location is provided with a retainer to hold the outer edge of the mounting flange. It is configured to be rotatable and is provided with a fixed lever that engages and disengages from the outer edge of the mounting flange as the lever rotates.
After the mounting flange is joined to the opposing surface of the support flange, its outer edge is held by a holder, and the outer edge is engaged with the protrusion to position the mounting flange and the air supply and exhaust pipe integrated therewith. After this, the fixing lever is rotated to lock the remaining outer edge of the mounting flange, thereby fixing the mounting.

[Example of idea]

Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings. Note that parts corresponding to those shown in FIG. 1 are given the same reference numerals.

2, 3, and 4, the supply and exhaust pipe 11 of the present invention also has a mounting flange 15 on its outer periphery.
Furthermore, a support flange 14 is provided at one end of the stationary sleeve 12. Then, by joining these flanges 14 and 15, the supply/exhaust tube 11 is installed in the sleeve 12 in a predetermined loosely fitted state. However, for fixing both flanges 14 and 15,
The fixing screw 16 is not used as in the conventional case, and the structure is as follows.

On the outer periphery of the mounting flange 15, substantially parallel linear outer side portions 15a and 15b are formed at two locations facing each other. Furthermore, on the surface of the support flange 14 facing the mounting flange 15, out of a total of four locations surrounding the outer periphery of the mounting flange 14 on the top, bottom, left and right in the drawing, two protrusions 18 are provided on the left and right in the drawing that are opposite to each other. Provide each. These protrusions 18 engage with the linear outer sides 15a, 15b of the mounting flange 15, and prevent the mounting flange 15 from shifting in the left-right direction in the drawing. Also, another one
At the bottom of the figure, there is a mounting flange 1.
A pocket-shaped holder 19 is provided to engage and hold the lower outer edge portion 15c of 5. In addition, one remaining place,
That is, a fixed lever 21 rotatably supported by an eyelet 20 is provided at the upper side in the figure.
At one end of this fixed lever 21, a mounting flange 1 is attached.
An L-shaped notch 22 is provided for locking the upper outer edge 15d of 5.

In the above configuration, the supply and exhaust pipe 11 is connected to the sleeve 1
2, first, the supply/exhaust pipe 11 is loosely fitted into the sleeve 12, and the mounting flange 15 is biased upward so that it is in the position shown by the two-dot chain line in FIG. At this time, the fixed lever 21 is kept tilted down. In this state, the left and right outer edges 15a and 15b are engaged with the protrusion 18 to prevent displacement in the left and right direction, and then the mounting flange 15 is slid downward. By this operation, the lower outer edge 15c of the mounting flange 15 is engaged and held within the holder 19. Thereafter, the fixing lever 21 is rotated approximately 90 degrees and its notch 22 is engaged with the upper outer edge 15d of the mounting flange 15 as shown in FIG. be done. At this time, the supply/exhaust tube 11 is disposed within the sleeve 12 at a predetermined loosely fitted position.

In this way, the air supply and exhaust pipe 11 can be installed in the sleeve 12 by simply joining the mounting flange 15 to the support flange 14, sliding it slightly, and then rotating the fixed lever 21.

Next, the embodiment shown in FIGS. 5, 6, and 7 will be described. This embodiment is the same as the previous embodiment except for the structure of the fixed lever 25.

The fixing lever 26 is also rotatably supported by the eyelet 20, but the locking portion of the mounting flange 15 with the upper outer edge 15d presses the upper surface of the outer edge 15d, as shown in FIG. It consists of a presser part 25a and a contact part 25b that contacts the side of the outer edge part 15d and prevents it from moving upward in the drawing. Then, a dimension L from the center of rotation to this abutment part 25b and a dimension l to the abutment part 25c on the opposite side.
is set as follows.

That is, the dimension L is such that, as shown in FIG.
When engaged with the upper outer edge portion 15d of the mounting flange 15 in a state where the mounting flange 15 is held in the position shown in FIG. In addition, the dimension 1 is defined as the air supply and exhaust pipe inside the sleeve 12 when the fixed lever 25 is rotated to the unlocking position and the mounting flange 15 is slid upward to remove it, as shown by the two-dot chain line in FIG. In order to prevent the upper outer circumferential surface of sleeve 11 from coming into contact with the inner circumferential surface of sleeve 12, the value is set to limit its sliding to the position shown by the two-dot chain line.

With this configuration, no looseness or the like will occur after the air supply/exhaust pipe 11 is installed, and the removal work will be made easier.

[Effect of idea]

As described above, according to the present invention, the work of attaching the supply/exhaust pipe to the stationary sleeve is easy and does not require any tools, and does not cause any trouble to general users.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional device, Figs. 2 and 3 are a front view and a side sectional view showing an embodiment of the supply/exhaust pipe mounting device according to the present invention, and Fig. 4 shows the main part configuration. FIGS. 5 and 6 are front views and side sectional views showing other embodiments of the present invention, and FIG. 7 is an exploded perspective view showing the main components thereof. 11... Supply and exhaust pipe, 12... Sleeve, 14...
...Support flange, 15...Mounting flange, 15
a, 15b...Outer edge, 15c, 15d...Outer edge, 18...Protrusion, 19...Holder, 21, 25
...Fixed lever.

Claims (1)

[Scope of utility model registration request] A support flange is formed on the outer periphery of one end of the stationary sleeve in a direction perpendicular to the axial direction thereof, and a support flange is formed on the outer periphery of an air supply and exhaust pipe that is loosely fitted into the sleeve so as to face the support flange. a mounting flange, and on the surface of the support flange facing the mounting flange, two of the four locations on the outer periphery of the mounting flange, which are opposed to each other, are provided with positional displacement prevention plates that engage with the outer edge of the mounting flange. A retainer for holding the outer edge of the mounting flange is provided at one other location, and the remaining one is configured to be rotatable and engages and disengages from the outer edge of the mounting flange by rotation. A mounting device for an air supply and exhaust pipe characterized by being provided with a fixed lever.