JP2003138622A - Attaching structure of waste plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate external fitting and mounting working to a waste plug body 4 of a triangular packing. SOLUTION: In a waste plug 13 externally fitting and mounting an overflow adapter 14 on an outer peripheral face of the cylindrical waste plug body 4 and performing watertightness between the waste plug body 4 and the overflow adapter 14 through the triangular packing 9, when the triangular packing 9 is tightened since a shape of a contact part of the overflow adapter 14 contacted on the triangular packing 9 is performed so as to be linear contact to the triangular packing 9, which is largely pushed to a diameter contraction direction by a linear contact shape of the overflow adapter 14, the inner peripheral face of the triangular packing 9 is strongly brought into pressure-contacted to the outer peripheral face of the waste plug body 4 to secure watertightness. Thus, an inside diameter size of the triangular packing 9 can be set larger than an outside diameter size of the waste plug body 4, and the external fitting and mounting to the waste plug body 4 of the triangular packing 9 is easy.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain plug mounting structure for allowing overflow water to flow into a drain plug of a basin or the like. 2. Description of the Related Art FIG. 2 shows a structure for attaching a drain plug to a drain port of a conventional basin, for example. As shown in FIG. 1, the drain plug 1 of the basin is provided with a tubular drain plug main body 4 attached to a drain port 3 provided in a bowl portion 2 of the wash basin. The overflow water overflowing (not shown) is introduced through the connection hose 5 and flows out to sewage or the like. In order to mount the conventional drain plug body 4, first, the drain plug body 4 is inserted into the drain port 3 from the inside of the wash bowl 2, and the tapered surface 6 A of the upper flange portion 6 is drained. 3 is locked to the tapered surface 3A. Then, a triangular packing 7 is externally fitted on the outer peripheral surface of the drain plug main body 4 and is brought into contact with the lower end surface 3B of the drain port 3. Next, an overflow adapter (hereinafter, simply referred to as an adapter) 8 having a cylindrical shape and having a connection hose 5 to an overflow hole connected to the side surface thereof is externally fitted to the drain plug main body 4, and has a flat upper end surface 8A. Is brought into contact with the lower end surface of the triangular packing 7. On the other hand, on the lower end face side of the adapter 8, a triangular packing 9 externally fitted on the outer peripheral face of the drain plug main body 4 is attached to the opening thereof, and the lower end face taper portion 8B of the adapter 8 is formed. The triangular packing 9 is joined to the tapered surface 9A. The triangular packing 9 is tightened via the washer 10 and the nut 11 to maintain watertightness. That is, the triangular packing 7 maintains water tightness between the drain port 3 of the washbasin bowl portion 2 and the drain plug body 4, and the triangular packing 7 is connected to the adapter 8 via the connection hose 5.
To prevent the overflow water from flowing into the inside of the drain plug main body 4 from the overflow water introduction hole 12 provided on the outer peripheral surface of the drain plug main body 4 (watertightness between the drain plug main body 4 and the adapter 8). Nature). [0005] However, in the above-mentioned conventional drain plug mounting structure, the lower triangular packing 9 is provided.
And the lower end surface of the adapter 8 is a surface contact between the tapered surface 9A and the tapered surface 8B. Therefore, nut 11
When the triangular packing 9 is tightened up through the hole, the radial contraction force of the triangular packing 9 toward the inner diameter side is small, and in order to secure watertightness between the drain plug main body 4 and the adapter 8, as shown in FIG. The triangle packing 9 is larger than the outer diameter dimension a of the drain plug body 4.
The dimensional relationship between the two is set so that the inner diameter dimension b becomes smaller (a> b). That is, the triangular packing 9 is forcibly fitted to the drain plug main body 4 to maintain watertightness between the two. However, with such a dimensional relationship, there was a problem that the mounting of the triangular packing 9 to the drain plug body 4 was extremely difficult. SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention has been improved and removed from the above-mentioned problems, and is intended to provide a drain plug having a triangular packing easily fitted to a drain plug body. It does not provide an attachment structure. [0007] In order to solve the above-mentioned problems, the present invention employs an overflow adapter which is externally fitted to an outer peripheral surface of a cylindrical drain plug body. In the drain plug that performs water tightness between the triangle packing and the drain adapter, the shape of the contact portion of the overflow adapter that comes into contact with the triangle packing is configured to be in line contact with the triangle packing. It is a mounting structure of a drain plug. According to the invention,
When the triangle packing is tightened, the contact of the overflow adapter with the triangle packing is a line contact, and as a result, the triangle packing is greatly pressed in the diameter reducing direction, and the inner peripheral surface of the triangle packing is the outer peripheral surface of the drain plug body. To ensure strong water tightness. Therefore, the inner diameter dimension b of the triangular packing can be set to be larger than the outer diameter dimension a of the drain plug main body, and the work of fitting the triangular packing to the drain plug main body can be easily performed. The following is a description of the structure of the present invention based on the embodiments of the present invention shown in the drawings. The same reference numerals as those in the conventional case denote the same members. FIG. 1 relates to one embodiment of the present invention, and is a partial longitudinal sectional view showing a structure for attaching a drain plug 13 to a wash bowl portion 2 of a wash basin. As shown in the figure, a drain plug 13 in this embodiment is provided with a drain port 3 provided in a bowl portion 2 of a basin.
The drainage plug main body 4 is attached to the drainage plug body 4, and a connection hose 5 for overflow water overflowing from an overflow hole (not shown) of the washbasin bowl portion 2 is connected to the drainage plug main body 4. First, the drain plug body 4 is attached to the drain port 3 from the inside of the washbasin bowl portion 2.
The tapered surface 6A of the upper flange portion 6 is locked to the tapered surface 3A of the drain port 3. Then, a triangular packing 7 is externally fitted on the outer peripheral surface of the drain plug body 4, and the lower end surface 3 of the drain port 3 is mounted.
B. Next, an overflow adapter 14 having a cylindrical shape and having a connection hose 5 connected to an overflow hole on the side surface thereof is externally fitted to the drain plug main body 4, and the flat upper end surface 14 </ b> A of the adapter 14 is attached to the triangular packing 7. It is in contact with the lower end face. On the lower end side of the adapter 14,
A triangular packing 9 fitted externally on the outer peripheral surface of the drain plug body 4 is attached to the opening, and a portion of the adapter 14 that comes into contact with the tapered surface 9A of the triangular packing 9 is a pointed tip 14B having a right-angle cross section, The first contact state is a line contact. Tighten the washer 10 and nut 1
1 is performed. That is, when the nut 11 is tightened, the triangular packing 9 is moved through the washer 10 as shown in FIG.
Is pushed up. Therefore, the triangular packing 9 is strongly compressed in the inner diameter direction by the distal end 14 </ b> B of the adapter 14 (having a diameter reducing action). As a result, the inner peripheral surface of the triangular packing 9 closely adheres to the outer peripheral surface of the drain plug main body 4 with a large acting force, and water tightness with the drain plug main body 4 is ensured. As described above, by forming the contact portion of the adapter 14 with the triangular packing 9 so as to form a line contact, the triangular packing 9 is largely reduced in the inner diameter direction, and the gap between the adapter 14 and the drain plug body 4 is reduced. Because it can maintain water tightness,
Even when the inner diameter dimension b of the triangular packing 9 is set to be larger than the outer diameter dimension a of the drain plug main body 4 (relationship of b> a), watertightness can be ensured by the above-described diameter reducing action. It is possible. Therefore, the work of fitting the triangular packing 9 to the drain plug main body 4 is extremely easy due to the relationship of b> a. By the way, the present invention is not limited to the above-described embodiment, and can be appropriately changed. For example, the shape of the portion of the adapter 14 that contacts the triangular packing 9 may be an acute angle or an obtuse angle. What is important is that the triangular packing 9 should be in line contact at first to reduce the diameter. In addition, the drain plug 14 can be applied to a hand-washing machine and the like in addition to the basin. As described above, according to the present invention,
An overflow adapter is externally fitted to the outer peripheral surface of the cylindrical drain plug body, and the overflow adapter that contacts the triangle packing in the drain plug that performs watertightness between the drain plug body and the overflow adapter through the triangle packing. Since the shape of the part is shaped so as to be in line contact with the triangle packing, when the triangle packing is tightened, the triangle packing is largely pressed in the diameter reduction direction by the line contact shape of the overflow adapter, and the triangle is closed. The inner peripheral surface of the packing is strongly pressed against the outer peripheral surface of the drain plug body to ensure watertightness. Therefore, the inner diameter of the triangle packing can be set to be larger than the outer diameter of the drain plug body,
The work of attaching the triangular packing to the drain plug body is easy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial longitudinal sectional view showing a drain plug mounting structure according to an embodiment of the present invention. FIG. 2 is a partial longitudinal sectional view showing a conventional drain plug mounting structure. FIG. 3 is a drawing showing the relationship between the outer diameter of a conventional drain plug body and the inner diameter of a triangular packing. [Description of Signs] 2 ... Wash bowl part 3 ... Drain port 4 ... Drain plug body 5 ...
Connection hose, 9 ... triangle packing, 10 ... washer, 11
... Nut, 13 ... Drain plug, 14 ... Overflow adapter, 14B ... Part of the overflow adapter that contacts the triangle packing.

Claims (1)

Claims: 1. A drain plug having an overflow adapter externally mounted on an outer peripheral surface of a cylindrical drain plug main body, and performing water tightness between the drain plug main body and the overflow adapter via a triangle packing. 2. The drain plug installation structure according to claim 1, wherein the shape of the contact portion of the overflow adapter that comes into contact with the triangular packing is formed so as to be in line contact with the triangular packing.