JP3075123B2 - Water faucet mounting structure and washer - 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 in which a water faucet is fixedly attached to a counter and a washer therefor. The present invention relates to a faucet mounting structure and a washer having a good water resistance. More specifically, the present invention relates to a mounting structure suitable for a one-hole type faucet and a washer therefor.

[0002]

2. Description of the Related Art In the case of a single lever hot water mixing faucet for a sink, a counter hole is provided with one faucet installation hole (one hole), and the lower end of the faucet is inserted into the faucet installation hole. A water faucet is fixedly mounted by tightening a nut through a washer (for example, Japanese Patent Application Laid-Open No. Hei 6-200546).

A conventional example of such a one-hole type faucet mounting structure will be described with reference to FIGS.

[0004] A faucet installation hole 12 is formed in the counter 10, and a single-lever hot-water mixing faucet 14 is mounted. The single-lever hot-water mixing faucet 14 includes a faucet main body 16 having a built-in water channel mechanism, a rotating cylinder 18 externally fitted to the faucet main body 16, and a water discharge pipe 20 extending diagonally forward from the rotating cylinder 18. And a lever handle (not shown) provided above the faucet.

A water supply pipe 22, a hot water supply pipe 24, and a screw shaft 26 project from the bottom surface of the faucet body 16, and these are inserted into the faucet installation hole 12. The screw shaft 2 is inserted into the screw shaft insertion hole 30 of the U-shaped (horse-shoe) washer 28.
6 is inserted and the nut 32 is screwed into the screw shaft 26 to fix the hot and cold water mixing faucet 14 to the counter 10.

The water supply hose 2 is connected to the supply pipes 22 and 24.
4. Hot water supply hoses 36 are respectively connected. In addition,
Instead of connecting hoses 34 and 36, supply pipe 2
In some cases, the copper pipes 2 and 24 are formed of long copper pipes and are directly connected to a water supply pipe or a hot water supply pipe (or a water stopcock or the like).

As is well known, the hot and cold mixing faucet 14 is
By operating the lever handle of the book, the amount of discharged water and the temperature of discharged water can be adjusted. In addition, the water discharge pipe 20 can be freely rotated left and right. Since the water faucet is difficult to use if the water discharge pipe 20 has turned 360 °, a stopper for regulating the rotation range of the water discharge pipe 20 may be provided on the water faucet main body.

[0008]

SUMMARY OF THE INVENTION
The washer 28 is attached to the screw shaft 2 so that
6, the washer 28 must be held down by hand until the nut 32 is screwed sufficiently upward, and the construction work is troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a faucet mounting structure and a washer which can save the trouble of holding such a washer by hand.

In a water faucet provided with a stopper for regulating the range of rotation of the water discharge pipe, torque is applied to the water faucet body each time the water discharge pipe hits the stopper, and the water faucet body is moved. It may rotate slightly and the supply tube may hit the washer. When the supply pipe hits the washer in this way, there is a risk that the water faucet will be loosened for a long time or the supply pipe will be damaged such as stress corrosion.

It is another object of the present invention to provide a faucet mounting structure that reliably prevents a washer from hitting a supply pipe.

[0012]

According to a first aspect of the present invention, there is provided a water faucet mounting structure in which a water faucet having a screw shaft protruding from a bottom surface of a water faucet main body is mounted on a counter. ,
The screw shaft is inserted into a faucet installation hole provided in the counter, the bottom surface of the faucet body is seated on the upper surface around the faucet installation hole, and a washer having a screw shaft insertion hole is provided by the washer. The screw shaft is inserted through the screw shaft insertion hole, the screw shaft is disposed below the counter, and the washer is pressed against the edge of the faucet installation hole on the lower surface of the counter by a nut screwed into the screw shaft. In the faucet mounting structure, a convex portion for supporting the side surface of the washer projects downward from the bottom surface of the faucet main body, and a washer drop prevention piece that contacts the convex portion is provided on the outer surface of the washer. It is characterized by the following.

According to a second aspect of the present invention, in the first aspect of the present invention, the inner surface of the screw shaft insertion hole of the washer has a female tapered surface whose diameter increases downward. A male tapered surface that engages with the female tapered surface and contracts upward is provided, and the male tapered surface is pressed against the female tapered surface by tightening the nut.
As a result, the washer is urged to the side, the side surface of the washer is pressed against the side surface of the protrusion, and the washer drop prevention piece is disposed on the side surface of the washer contacting the protrusion. It is a feature.

According to a third aspect of the present invention, in the washer having a screw shaft insertion hole and having a substantially U-shape when projected onto a plane perpendicular to the axis of the screw shaft insertion hole, the washer corresponds to a U-shaped recess. A washer drop prevention piece is provided on a side surface facing the washer recess.

According to a fourth aspect of the present invention, there is provided the washer according to the third aspect, wherein the washer falling prevention piece is made of rubber or synthetic resin.

According to a fifth aspect of the present invention, in the third aspect of the present invention, the washer falling prevention piece includes a base portion fixed to the washer,
It is made of a rubber or synthetic resin body having a rib provided upright from the base portion.

[0017]

According to the water faucet mounting structure of the present invention, when the screw shaft insertion hole of the washer is inserted into the screw shaft, the washer falling prevention piece comes into contact with the projection, so that the washer can be dropped even if the hand is released from the washer. do not do.

In the water faucet mounting structure according to the second aspect, the washer is pressed against the convex portion via the washer falling prevention piece, thereby preventing the faucet body from rotating. For this reason, in a single-lever hot-water mixing faucet with a stopper for regulating the range of rotation of the spout pipe, even if the spout pipe hits the stopper and torque is applied to the faucet body, the faucet body does not rotate.

The washer according to the third aspect is used for the faucet mounting structure according to the first and second aspects.

According to the washer of the fourth aspect, the washer is prevented from dropping because the washer drop preventing piece elastically abuts the convex portion.

In the washer of the fifth aspect, when the screw shaft insertion hole of the washer is inserted into the screw shaft, the rib of the washer drop prevention piece hits the convex portion, and the washer is shifted in a direction away from the convex portion as a whole. I do. As a result, when the washer is pushed upward, the body of the washer is prevented from hitting the convex portion, and the washer can be easily mounted on the screw shaft.

In the washer according to the fifth aspect, the rib of the washer drop prevention piece is pressed against the convex portion, and the repulsive force of the rib reliably prevents the washer from falling. When the washer is attached, only the rib is deformed by hitting the projection, so that a small force is required to push the washer.

[0023]

Embodiments will be described below with reference to the drawings. FIG. 1 is an exploded view showing a faucet mounting structure according to an embodiment of the present invention, FIG. 2 is a side view showing a state in which the faucet is being mounted, FIG. 3 is a bottom view of FIG. FIG. 5 is a cross-sectional view showing a faucet mounting structure, FIG. 5 is a cross-sectional view taken along the line VV in FIG. 4, and FIGS. 6 and 7 are perspective views of a washer.

A hot / water mixing faucet 40 is attached to the faucet installation hole 12 of the counter 10. This hot and cold mixing faucet 4
Reference numeral 0 denotes a faucet main body 42 having a built-in water channel mechanism, a mixing valve device 44 provided on the upper portion of the faucet main body 42, a lever handle 46 for operating the mixing valve device 44, and a faucet main body 4
2, a water discharge pipe 50 extending forward and obliquely upward from the rotation cylinder 48, a screw shaft 52 projecting downward from the bottom surface of the faucet body 42, and a projection. A water supply port 60 and a hot water supply pipe (not shown) connected to a water supply port 56 and a hot water supply port 58 (see FIG. 3) provided on the projection 54.

The projection 54 is provided integrally with the faucet body 42, and the screw shaft 52 is fixed to the faucet body 42 by screwing. The screw shaft 52 and the projection 54 are inserted into the faucet installation hole 12 and extend below the counter 10. A screw shaft insertion hole 64 of the washer 62 is inserted into the screw shaft 52.
Is inserted and the nut 66 is tightened to fix the hot and cold water mixing faucet 40 to the counter 10.

The inner peripheral surface of the screw shaft insertion hole 64 is a female tapered surface 68 whose diameter increases downward. An upper end surface of the nut 66 is provided with a male tapered surface 70 that engages with the female tapered surface 68 and has a diameter that decreases upward. In the present embodiment, the nut 66 has a vertically symmetrical shape, and the male tapered surface 70 is also provided on the lower end surface, so that the nut 66 can be used in any direction.

As shown in FIG. 6, this washer 62 has a substantially U-shape in plan view, and has a first arm 74 and a second arm 74 extending forward from the periphery of the screw shaft insertion hole 64, respectively.
An arm 76 is provided. These first and second arm portions 74, 7
6 is arranged so as to hold the projection 54 as shown in FIGS. The convex portion 54 is provided with a first side surface 54a and a second side surface 54b so as to face the arm portions 74 and 76.

As shown in FIG. 7, the walls 74a, 76a of the arms 74, 76 facing the washer recess corresponding to the U-shaped recess.
Is provided with a washer drop prevention piece 72 made of an elastic body made of synthetic resin or rubber (preferably synthetic resin).

Although the washer drop prevention piece 72 is fixed to the washer 62 by bonding, it may be fixed by a method other than bonding. The washer drop prevention piece 72 may be in the form of a flat plate, but preferably has a shape shown in FIG. 10 described later.

As shown in FIG. 2, when the screw shaft insertion hole 64 of the washer 62 is inserted into the screw shaft 52, the washer drop prevention piece 72 elastically abuts the side surfaces 54a and 54b of the convex portion 54, The washer 62 does not fall even if the hand is released from the 62. Also, a washer drop prevention piece 72 made of an elastic body is used.
The repelling force pushes the washer 62 in a direction away from the convex portion 54, so that a slight gap is formed between the arm wall surfaces 74a, 76a and the convex side surfaces 54a, 54b. As a result, when the washer 62 is raised along the screw shaft 52, the washer 62 hardly hits the projection 54, and the washer 6
2 easily rises. At this time, the center of the screw shaft insertion hole 64 is slightly shifted to the right side in FIG. 3 from the center of the screw shaft 52.

After raising the washer 62 until it comes into contact with the counter 10, a nut 66 is screwed onto the screw shaft 52, the male tapered surface 70 is brought into contact with the female tapered surface 68, and the nut 66 is further lightly tightened. Then, the washer 62 is urged leftward in FIG. 3 by the engagement between the tapered surfaces 68 and 70,
The arms 74 and 76 abut against the convex side surfaces 54a and 54b.
When the nut 66 is further tightened strongly, the washer 62
Is strongly pressed against the lower surface of the counter 10,
The arm portions 74 and 76 are strongly pressed against the convex side surfaces 54a and 54b, and the hot and cold water mixing faucet 40 is fixed to the counter 10.

In this fixed mounting state (see FIGS. 4 and 5), the bottom surface of the faucet main body 42 and the washer 62 strongly hold the counter 10, and the arm portions 74 and 76 have the convex side surfaces 54a and 54b. The water faucet 40 does not rotate at all even if a rotational force is applied to the hot / water mixing faucet 40. That is, the hot and cold water mixing faucet 40 is
Even if the water faucet 40 has a stopper for regulating the rotation range of 0, the faucet 40 does not rotate due to the torque when the water discharge pipe 50 comes into contact with the stopper. In particular, in the present embodiment, the serrated portion is provided on the upper surface of the washer 62, and the serrated portion is fitted into the lower surface of the counter 10. The rotation of the plug 40 is reliably prevented.

In addition, in the present embodiment, the water supply pipe 60 and the hot water supply pipe are joined to the lower end surface of the convex portion 54, and this is a case where a rotating torque is applied to the faucet 40. However, no stress is applied to the supply pipe. As a result, adverse effects such as stress corrosion of the supply pipe do not occur at all.

FIGS. 10 and 11 are perspective views of a washer drop preventing piece used in another embodiment of the present invention.

The washer drop prevention piece 72A shown in FIG. 10 has a wedge shape whose thickness becomes smaller as it goes upward.
When it is attached to the projection 76, it can easily ascend along the projection side surfaces 54 a and 54 b without being caught on the lower edge of the projection 54.

The washer drop prevention piece 72B shown in FIG. 11 has a flat base 72a and a rib 72b integral with the base 72a. The rib 72b is in the form of a triangular plate whose height decreases as it goes upward.
6, it can easily ascend along the convex side surfaces 54a, 54b without being caught on the lower edge of the convex portion 54. Also, the washer falling prevention piece 72B is
At the same time, when ascending along the convex side surfaces 54a, 54b, the rib 72b is pressed by the convex side surfaces 54a, 54b and deforms so as to be crushed. When raising the washer drop prevention piece 72B along the convex side surfaces 54a and 54b in this manner, only the rib 72b is deformed, so that the force for pushing up the washer 62 can be reduced.

[0037]

As described above, according to the water faucet mounting structure and the washer of the present invention, the washer does not fall even when the hand is released from the washer when the water faucet is mounted, and the workability is improved.

In the structure of the second aspect, even if the faucet has a stopper for restricting the rotation range of the water discharge pipe, the faucet can be firmly fixed to the counter. And the displacement of the faucet can be prevented.

The washer according to the fifth aspect deforms the rib provided on the washer drop prevention piece, and can be mounted on the screw shaft with extremely small force.

[Brief description of the drawings]

FIG. 1 is an exploded view showing an embodiment structure.

FIG. 2 is a view showing a water faucet installation process illustrating the structure of the embodiment.

FIG. 3 is a view taken along line III-III in FIG. 2;

FIG. 4 is a cross-sectional view showing a mounting structure according to the embodiment.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a perspective view from below of a washer.

FIG. 7 is a perspective view from above of a washer.

FIG. 8 is a perspective view showing a conventional example.

FIG. 9 is a sectional view showing a conventional example.

FIG. 10 shows a washer drop prevention piece 72 used in another embodiment.
It is a perspective view of A.

FIG. 11 is a perspective view of a washer drop prevention piece 72B used in still another embodiment.

[Explanation of symbols]

 10 counter 12 faucet installation hole 14,40 hot and cold mixing faucet 16,42 faucet main body 20,50 water discharge pipe 26,52 screw shaft 28,62 washer 30,64 screw shaft insertion hole 32,66 nut 68 female tapered surface 70 Male tapered surface 72, 72A, 72B Washer drop prevention piece 72b Rib 74, 76 Arm

Claims (5)

(57) [Claims] 1. A structure in which a faucet having a screw shaft for fixing and attaching a faucet protrudes from a bottom surface of a faucet body is attached to a counter, and the faucet installation hole provided in the counter is provided with the screw shaft. Is inserted, a bottom surface of the faucet body is seated on an upper surface around the faucet installation hole, and a washer having a screw shaft insertion hole allows the screw shaft to be inserted through the screw shaft insertion hole and the counter to be inserted. A water faucet mounting structure in which the washer is pressed against an edge of a water faucet installation hole on the lower surface of the counter by a nut screwed into the screw shaft, A faucet mounting structure, characterized in that a convex portion for supporting a side surface of a washer is projected downward, and a washer drop preventing piece is provided on an outer surface of the washer to contact the convex portion. 2. The female tapered surface according to claim 1, wherein the inner surface of the screw shaft insertion hole of the washer has a female tapered surface whose diameter increases downward. And a male tapered surface which is reduced in diameter upwards is provided, and the male tapered surface is pressed against the female tapered surface by tightening the nut, whereby the washer is laterally attached. A faucet mounting structure, wherein the side surface of the washer is pressed against the side surface of the convex portion, and the washer drop prevention piece is disposed on the side surface of the washer contacting the convex portion. 3. A washer having a screw shaft insertion hole and having a substantially U-shape projected on a plane perpendicular to the axis of the screw shaft insertion hole, facing a washer recess corresponding to a U-shaped recess. Washer characterized by having a washer drop prevention piece on the side. 4. The washer according to claim 3, wherein the washer drop prevention piece is made of rubber or synthetic resin. 5. The device according to claim 3, wherein the washer drop prevention piece is made of a rubber or synthetic resin body having a base fixed to the washer and a rib erected from the base. And the washer.