JPS61186743A - Suction grille for ventilation - Google Patents

Abstract

PURPOSE:To make it possible to use pipe of various diameter for drain purpose by forming the drain pipe joint section into an annular groove the width of which is made increasing narrower toward narrower the bottom. CONSTITUTION:The joint section 6 comprises a cylindrical body 7 and an annular groove 8 the inner side wall of which is the afore-mentioned cylindrical body 7. The diameter of the cylindrical body 7 is made increasingly smaller toward its end so as to make the width of the groove increasingly smaller toward its bottom, and the diameter of the outer side wall 9 of the annular groove 8 is made increasingly smaller toward the bottom. In the case of a drain pipe 5a made of a soft, low hardness tube, it is connected to the cylindrical body 7 by the interference fit. In the case of a high hardness pipe 5b, the connection is completed by inserting it so as to internally contact the outer side wall 9 of the annular groove 8. In this manner, more than two kinds of drain pipes having a different diameter can be connected to the joint section 6, and, as the diameter of the cylindrical body 7 and the outer side wall 9 of the annular groove 8 is so arranged that the width of the annular groove 8 is increasingly smaller toward the bottom, the drain pipe can be connected firmly even if the pipe diameter is different to a certain degree.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a ventilation suction grill that is attached to a ceiling or wall for ventilation in a room, particularly in a bathroom.

BACKGROUND OF THE INVENTION In recent years, the degree of airtightness of houses, especially rooms, has increased significantly due to aluminum sash and new building materials, and ventilation of each room has become important. Therefore, when installing suction grills on walls and ceilings and ventilating each room using duct piping, especially when ventilating humid rooms such as bathrooms, plumbing work for drain pipes was extremely important.

For this reason, conventionally, as shown in FIG. 4, the drain piping 106 is installed behind the suction grill 1o1, which is connected to the tip of the exhaust duct 102 that is connected to the ventilation fan 106 installed inside the ceiling. For example, a drain pipe connection port 104 was installed for
No. 112626/1982).

Problems to be Solved by the Invention In such a conventional configuration, the drain pipe connection port 10
4 has a convex shape, there is a problem in that only one type of diameter of the drain pipe 106 can be connected.

The present invention has been made in consideration of the above-mentioned conventional problems, and an object of the present invention is to provide a suction grill that eliminates the need to specify the diameter of the drain connecting pipe and allows the use of drain connecting pipes of a wide variety of diameters.

Means for Solving the Problem In order to solve this problem, the present invention forms the connection part of the drain pipe in the suction grill with a cylindrical body and an annular groove surrounding the cylindrical body, and the groove width is inside. The odor is gradually reduced.

Function: With this configuration, a cylindrical drain pipe with a certain diameter can be fixed, and in the case of a drain pipe with a larger diameter, the outer wall of the annular groove can be fixed.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In Fig. 1, 1 is a suction grill attached to the ceiling surface on the indoor side, and an exhaust duct 3 is connected to an exhaust duct connection port 2 formed on the back side of the grill. 4 is connected. A connecting portion 6 to which a drain pipe 5 is connected is provided near the end of the back side of the suction grill 1. The connecting portion 6 is made up of a cylinder 7 and an annular groove 8 with the cylinder 7 as an inner wall member, and the diameter of the cylinder 7 is gradually reduced toward the distal end so that the groove width becomes smaller as the odor increases. The diameter of the outer wall 9 of the annular groove 8 is gradually reduced toward the inner odor side.

To explain in more detail the connection between the connecting part 6 and the drain pipe 5, as shown in FIG. In the case of a tall pipe 5b, it is inserted and connected so as to be inscribed in the outer wall 9 of the annular groove 8.

In this way, according to the configuration of the embodiment, at least two types of drain pipes having different diameters can be connected to the connecting part 6, and the diameters of the outer wall 9 of the cylindrical body 7 and the annular groove 8 are the same as those of the annular groove 8. Since the groove width gradually becomes narrower, a reliable connection can be made even if the diameter of the drain pipe is slightly different.

FIG. 3 shows another embodiment of the present invention, in which the diameter of the cylindrical body 7 and the diameter of the outer wall 9 of the annular groove 8 are changed stepwise, and this embodiment is also different from the embodiment described above. Similarly, various types of drain pipes 5 having different diameters can be connected.

Effects of the Invention As is clear from the description of the embodiments described above, the present invention forms an annular groove using a cylinder as an inner wall member, and the diameters of the inner and outer walls of the annular groove are gradually reduced in width depending on the internal odor. Since the drain connection section is constructed by changing the drain connection section, pipes of various diameters can be used for the drain, which is advantageous in terms of construction work.

[Brief explanation of the drawing]

FIG. 1 is a side view of a ventilation suction grill according to a first embodiment of the present invention, FIG. 2 is a sectional view of the same main part, and FIG. 3 is a main part of a ventilation suction grill according to a second embodiment of the present invention. The sectional view, FIG. 4, is a side view of a conventional ventilation suction grill. 1...Suction grill, 5...Drain pipe, 6...Connection part, 7...Cylinder body, 8...
...Annular groove. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
figure

Claims (2)

[Claims] (1) It has an exhaust duct connection port and a connection part for a drain pipe, and the connection part consists of a cylindrical body and an annular groove with the cylindrical body as an inner wall member, and the diameter of the cylindrical body and the annular groove are A suction grill for ventilation in which the diameter of the outer wall is changed so that the groove width of the annular groove becomes smaller toward the internal odor. (2) The ventilation suction grille according to claim 1, wherein the diameter of the cylindrical body and the diameter of the annular groove change stepwise.