JP3118692B2 - Installation structure of hand-washing spout pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for attaching a hand-washing spout pipe to a lid of a low tank installed in a toilet.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional flush water tank T provided in a flush toilet U. A ball tap 1 for supplying washing water is provided in the tank T, and a pipe 2 branched from the ball tap 1 is connected to a lower end of a hand-washing spout pipe 3 attached to the lid S of the tank T in an upright state. The cleaning water is supplied to the hand-washing spout 3 simultaneously with the supply of the cleaning water into the tank T.

[0003]

The conventional hand-washing spout pipe 3 has a bolt portion suspended from the base portion, and the bolt portion is inserted into a mounting hole formed in the lid portion S of the tank T and penetrated therethrough. A mounting means is adopted in which a nut is screwed into the bolt portion from below and tightened.

As described above, the installation of the conventional hand-washing spout pipe requires a nut tightening step with poor workability, and thus it has been difficult to increase the production efficiency of the tank with the hand-washing device.

[0005] If the nut is loosened, there arises a problem that the mounting state of the hand-washing spout pipe becomes unstable.

[0006]

SUMMARY OF THE INVENTION The present invention provides means for attaching a hand-washing spout pipe to a tank lid without using a nut, and in the case where a nut is used, the nut may be loosened. This also provides means for stably maintaining the attached state of the hand-washing spout pipe. The feature of the means adopted by the present invention is that an insertion portion is vertically provided at the base of the hand-washing spout pipe, a mounting hole for inserting the insertion portion is formed in a lid portion of the tank, and an inner periphery of the opening of the mounting hole is formed. A variable portion capable of being elastically deformed facing the surface is integrally formed with the lid portion, and an engagement structure is provided between the insertion portion and the variable portion to fit the concave and convex portions.

[0007] It should be noted, Oite the insertion portion of the wash water discharge pipe, the
If a bolt portion is formed in a region on the distal end side of the engagement structure , mounting using a nut is possible.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An insertion portion having a diameter slightly smaller than that of a base portion of a hand-washing spout pipe is vertically provided on the lower surface of the base portion, and an engagement projection is protruded from an upper portion of the insertion portion. However, an appropriate interval is set between the engagement projection and the lower surface of the water discharge pipe base.

[0009] A mounting hole for inserting the insertion portion is formed in the lid of the tank. A variable portion that can be elastically deformed is provided at an appropriate position on the opening edge of the mounting hole. For example, the variable portion can be formed as a movable piece that can be made to swing by a slit formed at an opening edge portion, for example, the lid portion is made of a less rigid synthetic resin.

[0010] In the variable portion of the mounting hole of the tank lid,
An engagement recess is formed which can be fitted with an engagement projection protruding from an insertion portion of the hand-washing spout pipe. To fit the engaging recess of the variable portion and the engaging protrusion of the insertion portion, after inserting the inserting portion into the mounting hole, the inserting portion is rotated by a predetermined angle so that the engaging protrusion fits into the engaging recess. The dimensional relationship may be set appropriately so as to fit.

[0011]

An embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, an insertion portion 11 is vertically provided on a lower surface 10 b of a base portion 10 a of a hand-washing spout 10, and a mounting hole 20 for inserting the insertion portion 11 is formed in a lid portion S of the tank. I do.

The insertion portion 11 is a base 10a of the hand-washing spout tube 10.
When the insertion portion 11 is inserted into the mounting hole 20, the base lower surface 10b comes into contact with the lid S of the tank. In the present embodiment, the side peripheral surface of the insertion portion 11 is divided into two regions: an upper region where an engagement structure with the mounting hole 20 of the tank lid S is provided, and a lower region where a bolt portion 12 made of a male screw is formed. It was configured.

In the upper region of the insertion portion 11, the height in the central axis direction is set substantially equal to the thickness of the tank lid S, and a pair of parallel flat portions 1 opposed to each other with the central axis interposed therebetween.
3,13 is formed, substantially at the center of each of the planar portions 13, at appropriate intervals from the base lower surface 10 b (for example, about half of the width dimension of the upper region), triangular engaging projections 1
4, 14 are protruded. A pair of cutout surfaces 15, 15 are formed on the side peripheral surface of the insertion portion 11 at positions perpendicular to the flat portions 13, 13 so as to be parallel to the entire length in the axial direction with the central axis interposed therebetween.

In the upper region of the insertion portion 11, the flat portions 13, 13 and the cutout surfaces 15, 15 are connected by a cylindrical surface 16, but as shown in FIG. A large diameter portion 17 is formed in the lower half of the cylindrical surface 16. The large-diameter portion 17 functions as a detent when the hand-washing spout 10 is attached to the tank lid S, which will be described later.

On the other hand, a tank lid S made of synthetic resin
The mounting hole 20 of FIG.
(See (C)), and includes a set of parallel linear portions 21 and a set of circular arc portions 22.
The linear portion 21 is provided with a movable portion 23 that forms a slit 26 and that can elastically swing outward. An engagement recess 24 that can be fitted to the engagement protrusion 14 of the insertion portion 11 is formed in the lower half of the center of the movable portion 23. The distance from the upper surface of the tank lid S to the engagement recess 24 is
It is set equal to the spacing dimension from the base portion lower surface 10 b to the engagement projection 14 in the insertion portion 11. On one end side of the circular arc portion 22 near the straight portion 21, a locking step portion 25 that engages with the large diameter portion 17 of the insertion portion 11 is provided.

The procedure for attaching the hand-washing spout 10 constructed as described above to the tank lid S is as follows. First, the cutout surface 15 of the insertion portion 11 in the
15 and the straight part 2 of the mounting hole 20 in the tank lid S
The insertion portion 11 is inserted into the mounting hole 20 such that the engagement protrusions 14 and 14 of the insertion portion 11 correspond to the arc portions 22 and 22 of the mounting hole 20. The lower surface 10b is brought into contact with the surface of the tank lid S. Next, the hand-washing spout tube 10 is rotated clockwise in plan view. Then, the cylindrical surface 16 of the insertion portion 11
Pushes the movable portion 23 of the mounting hole 20 outward to expand the diameter of the mounting hole 20, so that the insertion portion 11 can rotate in the mounting hole 20.

When the insertion portion 11 rotates 90 degrees, the insertion portion 1
The first engaging projection 14 and the engaging concave portion 24 of the mounting hole 20 are aligned and fitted. At this time, the large-diameter portion 17 of the insertion portion 11 is simultaneously
Is engaged with the locking step 25 of the mounting hole 20, so that the insertion portion 1
1 is prevented from rotating more than 90 degrees clockwise. Further, rotation in the counterclockwise direction is also prevented based on the shapes of the engagement protrusion 14 and the engagement recess 24. Further, since the engaging concave portion 24 of the mounting hole 20 is formed in the lower half portion of the movable portion 23,
The insertion part 11 is also prevented from being pulled out.

As described above, according to the mounting structure of the present invention, the operation of inserting the insertion portion 11 into the mounting hole 20 and rotating it by 90 degrees can easily move the hand-washing spout tube 10 to the tank lid portion S. Can be attached. In addition, in a normal use mode, the hand-washing spout 10 does not easily fall off or rotate.

In the present embodiment, since the bolt portion 12 is formed in the insertion portion 11 of the hand-washing water discharge pipe 10, fixing using a nut can be used together. After attaching the hand-washing spout 10 to the lid S as described above, the nut is screwed into the bolt portion 12 from below and tightened to make the mounting state of the hand-washing spout 10 more firm. it can.

However, in the embodiment shown in the drawings, the direction in which the nut is tightened is opposite to the direction of rotation when the hand-washing spout 10 is attached. The water pipe 10 rotates counterclockwise and the lid S
May be removed from Therefore, the engagement structure between the insertion portion 11 of the hand-washing spout 10 and the mounting hole 20 of the lid S is configured symmetrically with the illustrated one, and the hand-washing spout 10 is moved counterclockwise by 9 mm.
If it is attached to the lid S by rotating it by 0 degrees, there is no danger that the hand-washing spout 10 will come off the lid S by tightening the nut.

Alternatively, the same function as described above can be obtained by forming the engagement structure between the insertion portion 11 of the hand-washing spout pipe 10 and the mounting hole 20 of the lid S as shown in the figure, and forming the bolt portion 12 with a reverse screw. Be demonstrated.

By forming the bolt portion, the hand-washing spout of this embodiment can be attached to a conventional tank lid using a nut.

[Other Embodiments] Embodiments of the present invention are not limited to the above. The bolt portion 12 of the insertion portion 11 is not always necessary, and the bolt portion 12 can be omitted when attaching the hand-washing spout 10 using only the structure of the present invention.

The movable part of the mounting hole may be formed by forming a part of the opening edge of the mounting hole by an elastic body in addition to forming a slit so as to be swingable.

In addition, the present invention does not prevent the present invention from being appropriately changed depending on the state of implementation.

[0026]

According to the present invention, the insertion portion of the hand-washing spout pipe is inserted into the mounting hole of the tank lid and then rotated to make the engagement structure provided between the insertion portion and the mounting hole unevenly fitted. Only
Thus, since the hand-washing spout pipe can be attached to the lid, a conventional nut tightening step is not required, thereby improving the production efficiency of the tank.

When a bolt portion is formed in the insertion portion, fixing with a nut can be used at the same time, so that a stronger mounting structure can be obtained. In this case, even if the nut is loosened, the present invention has an engagement structure between the insertion portion of the hand-washing spout and the mounting hole of the lid. No stability.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an insertion part of a hand-washing spout and an attachment hole according to an embodiment of the present invention.

2 (A) is a side view of an insertion portion, FIG. 2 (B) is a front view of the insertion portion, and FIG. 2 (C) is a diagram of FIG. It is a plane sectional view of the insertion section in the XX line.

3 (A) is a plan view of a mounting hole, and FIG. 3 (B) is a longitudinal sectional view of the mounting hole according to an embodiment of the present invention.

FIG. 4 is a partially cutaway front view showing a conventional low tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Hand washing water discharge pipe 11 Insertion part 12 Bolt part 14 Engagement projection 20 Mounting hole 23 Movable part 24 Engagement concave part 25 Locking step part S Tank lid part

Claims (2)

(57) [Claims] 1. A structure for attaching a hand-washing spout pipe to a lid of a washing-water tank installed in a toilet bowl, wherein an insertion portion is vertically provided at a base of the hand-washing spout pipe, and is attached to a lid of the tank. A mounting hole through which the insertion portion is inserted is formed, and a variable portion that can be elastically deformed facing the inner peripheral surface of the opening of the mounting hole is formed integrally with the lid portion . An attachment structure for a hand-washing spout pipe, characterized in that an engagement structure is provided between the concave-convex fittings. 2. An insertion portion provided at a base of the hand-washing spout pipe.
2. The attachment structure for a hand-washing spout according to claim 1 , wherein a bolt portion is formed in a region on the tip side of the engagement structure. 3.