JP2003090069A - Faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a faucet which can be stopped at a position where its handle is moved without relying upon only to a sliding resistance between a valve seat and a valve. SOLUTION: The handle can be exerted to a predetermined position by a spring by moving the handle back and force for a faucet performing water supply and stop. In this way, the lever can be exerted by the spring and thus the handle cannot move freely by the dead weight of the handle attached to the lever thereby stopping the handle to a position moved by the user. Thus, the handle cannot move freely during the use and fluctuation in the amount of water supply can be suppressed.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a faucet. Specifically, it relates to a faucet in a single lever handle.

[0002]

2. Description of the Related Art Conventionally, a single lever handle faucet has a valve seat and a valve having a water passage formed in a cartridge, and a lever guide on the upper side of the cartridge. Is attached. Then, by moving the lever back and forth along this lever guide and about the pin as an axis, with respect to the valve seat,
Water can be supplied and stopped by sliding the valves to overlap or shift the water passages.
Also, when the cartridge is assembled to the faucet body, the packing provided under the valve seat is crushed to push up the valve seat, and against this sliding between the valve seat and the valve,
A predetermined biasing force (sliding resistance) is applied.

[0003]

However, when the cartridge is not sufficiently assembled to the faucet body, the packing cannot secure a sufficient force to push up the valve seat, and the sliding force between the valve seat and the valve causes The prescribed biasing force is not applied. Under such a condition that there is no urging force, the handle cannot be stopped at the moved position due to its own weight.

Even when the cartridge is sufficiently assembled to the faucet body, the weight of the handle is larger than the sliding resistance between the valve seat and the valve caused by the packing pushing up the valve seat. , Due to the weight of the handle, the handle cannot be stopped at the moved position. Further, the reaction force (sliding resistance) of the packing may gradually decrease with long-term use. Even in such a case, there is a possibility that the handle cannot be stopped at the moved position.

Next, the results of concrete verification of the above problems will be described below. For the type that is supplied with water by moving the handle down (hereinafter referred to as the lower on type), the hardness of the packing is increased and the thickness of the slip washer is increased to reduce the risk of the handle moving freely. We were able to. However, in the case of long-term use, incomplete assembly, or heavy weight of the handle, the handle may move due to its own weight.

On the other hand, for the type of water supplied by moving the handle upward (hereinafter referred to as the upper on type),
It was confirmed that it self-closes with increasing water pressure. This seems to be because when the handle is opened halfway, the valve (ceramic disc) is pushed up by water pressure, which causes the balance to be lost and pushes to eliminate sliding resistance. It was confirmed that the lower on type and the upper on type differ in the direction in which the water passages overlap and the difference in how the primary side water pressure is applied to the valve that interlocks with the handle. It can be said that the handle of the upper on-type is more likely to move due to its own weight than the lower on-type because the force is applied in the direction of self-closing while pushing up the valve with water pressure in the half-opened state.

Further, since the metal handle is heavier than the resin handle, the moment force for rotating the handle becomes large. In addition, the rotational moment may increase depending on the shape. In such a case, even if the water pressure was 0.05 MPa, the handle sometimes moved due to its own weight.

As described above, depending on various conditions, the handle can be kept in a predetermined position only by the sliding resistance between the valve seat and the valve due to the weight of the handle and how the water pressure is applied to the valve. Instead, the handle will move and the flow rate will change when water is supplied, making it impossible to use the faucet comfortably.

Therefore, in order to solve the above problems, the present invention provides a water faucet capable of keeping a handle in a moved position without relying only on a sliding resistance between a valve seat and a valve. With the goal.

[0010]

In order to solve the above problems, according to claim 1 of the present invention, in a faucet for supplying and stopping water by moving a lever back and forth, the lever is a spring. The faucet is characterized in that it is biased to a predetermined position by.

Thus, the lever can be biased by the spring, so that the handle attached to the lever cannot be moved by its own weight, and the handle can be stopped at the moved position. Therefore,
The handle does not move freely during use, and fluctuations in water supply can be suppressed.

According to a second aspect of the present invention, a valve seat and a valve having a water passage formed in the cartridge are provided, a lever guide is provided on the upper side of the cartridge, and a lever is attached to the lever guide with a pin as a shaft. Further, by moving the lever back and forth along the lever guide and around the pin as a shaft, the valve slides on the valve seat to overlap or shift the water passages so that water and water can be stopped. In the water faucet for performing the above, a spring is provided between the lever guide and the lever, and the elastic force of the spring urges the lever to a predetermined position.

Thus, the lever can be urged by the spring, so that the handle attached to the lever cannot be moved by its own weight, and the handle can be stopped at the moved position. Therefore,
The handle does not move during use, the valve does not slide, and fluctuations in water supply can be suppressed.

According to a third aspect of the present invention, the spring has a substantially U-shaped cross section, and the opening end portion is inclined inward, and the opening end portion sandwiches and urges the lever. It is characterized by

According to the present invention, since the opening end of the spring having a substantially U-shaped cross section can urge the lever by sandwiching the lever, the handle does not move freely by its own weight, and the handle is moved to the moved position. You can stop it.

According to a fourth aspect of the present invention, a step portion is formed on a side portion of the lever, and the lever is urged to a predetermined position by a spring pushing up the step portion. Characterize.

According to the present invention, since the lever can be pushed up and urged by the elastic force of the spring, the handle can be stopped at the moved position without being arbitrarily moved by the own weight of the handle.

According to a fifth aspect of the present invention, a groove is formed in a side portion of the lever, and a claw portion of a spring is fitted in the groove to urge the lever to a predetermined position. It is characterized by

According to the present invention, the elastic force of the spring allows the claw portion to be fitted into the groove portion of the lever and urge it, so that the handle does not move freely due to its own weight, and the handle is stopped at the moved position. Can be set.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described more specifically with reference to the drawings. The faucet 1 of the present invention supplies water and stops water by moving the handle 2 back and forth. When the lever 3 connected to the handle 2 is biased by the spring 5, the handle 2 is also biased to a predetermined position. It should be noted that moving the handle 2 back and forth includes moving it up and down. That is, the direction in which the handle 2 moves due to its own weight is included.

The structure of the cartridge 8 will be described with reference to FIG. A valve seat 6 and a valve 7 that form a water passage are provided in the cartridge case 17. And
A silencer, an O-ring, and a valve guide are fitted in the valve 7. A lever guide 15 is provided on the valve guide via a slip washer. Further, the cartridge lid 16 is further provided via the slip washer to attach the cartridge case 17
Each part is stored inside. In addition, the lever 3 with the pin 4 as an axis is attached to the lever guide 15 provided on the upper side of the cartridge 8.
Is attached.

Then, the lever 3 is moved back and forth along the lever guide 15 and with the pin 4 as an axis to move the valve seat 6
On the other hand, the valve 7 is slid so that the water passages are overlapped or displaced from each other to perform water supply and water stoppage. A packing 18 having a water passage is provided at the lower end. The spring 5 is omitted in FIG.

FIG. 1 is a sectional view of the faucet 1. As shown in the drawing, the cartridge 8 is embedded so that it is pressed against the faucet body by the cartridge retainer 14 of FIG.
Pushes up the valve seat 6 to generate sliding resistance between the valve seat 6 and the valve 7.

A spring 5 is provided between the lever guide 15 and the lever 3, and the elastic force of the spring 5 urges the lever 3 to a predetermined position. FIG. 2 shows the lever 3 facing upwards, and FIG.
Shows a state in which the lever 3 is tilted to one side of the front and rear.

Next, the spring 5 will be described below. 4 and 5 show the lever 3 and the spring 5 used in the faucet 1 shown in FIGS. 1 to 3. The spring 5 has a substantially U-shaped cross section, and the open end 12 is inclined inward. Then, the lever 3 can be sandwiched and urged by the open end 12. Also, in this spring 5,
Further, the pin 4 is inserted on the side opposite to the open end 12 to form a pin holding portion 19 for holding the spring 5. By holding the spring 5 by the pin holding portion 19, the spring 5 is not displaced by the operation of the lever 3, and the lever 3 can be constantly biased.

In FIG. 6, a step portion 9 is formed on the side portion of the lever 3, and the spring 5 pushes up the step portion 9 so that the lever 3 is biased to a predetermined position. I have to.

In FIG. 7, the spring 5 shown in FIG.
This is the case when it is provided on both sides of. As a result, the lever 3 can be pushed up and biased with good balance.

In FIG. 8, a plurality of recesses 10 are formed in the step portion 9 of FIG. 6, and the tip end of the spring 5 is fitted into the recess 10 to further enhance the biasing force. Also,
A click feeling can be provided by providing a plurality of recesses 10.

In FIG. 9, a plurality of groove portions 11 are formed in the side portion of the lever 3, and a claw portion 13 bent toward the lever 3 side portion is fitted into the groove portion 11 at the tip of the spring 5. So, it is urging. Further, a click feeling can be provided by providing the plurality of groove portions 11.

[0030]

As described above, it is possible to provide a water faucet which can keep the handle at the moved position without depending only on the sliding resistance between the valve seat and the valve. In addition,
The present invention exerts a particularly great effect particularly on a top-on type faucet.

[Brief description of drawings]

FIG. 1 shows a water faucet which is an embodiment of the present invention.

2 shows the cartridge in FIG.

FIG. 3 shows a state in which a lever of the cartridge in FIG. 2 is tilted.

FIG. 4 shows the lever in FIG.

5 shows a spring for urging the lever in FIG.

FIG. 6 shows a relationship between a lever and a spring that constitutes another embodiment of the present invention.

FIG. 7 shows a relationship between a lever and a spring that constitutes another embodiment of the present invention.

FIG. 8 shows a relationship between a lever and a spring that constitutes another embodiment of the present invention.

FIG. 9 shows a relationship between a lever and a spring that constitutes another embodiment of the present invention.

FIG. 10 shows a structure of a cartridge.

[Explanation of symbols]

1 faucet 2 handles 3 levers 4 pin 5 springs 6 seat 7 valves 8 cartridges 9 steps 10 recess 11 groove 12 Open end 13 Claw 14 Cartridge holder 15 Lever guide 16 Cartridge lid 17 cartridge case 18 packing 19-pin holder 20 through holes

Claims (5)

[Claims] 1. A faucet for supplying and stopping water by moving a lever back and forth, wherein the lever is biased to a predetermined position by a spring. 2. A cartridge is provided with a valve seat having a water passage and a valve, a lever guide is provided on the upper side of the cartridge, and a lever is attached to the lever guide by using a pin as a shaft. A water faucet for water supply and water stoppage by moving the lever back and forth along the pin and using the pin as an axis, and sliding the valve against the valve seat to overlap or shift water passages of each other. The water faucet according to claim 1, wherein a spring is provided between the guide and the lever, and the elastic force of the spring urges the lever to a predetermined position. 3. The spring has a substantially U-shaped cross section, and an opening end portion is inclined inward, and the opening end portion urges the lever by sandwiching the lever. The faucet according to Item 1 or 2. 4. A step portion is formed on a side portion of the lever, and the lever is biased to a predetermined position by a spring pushing up the step portion.
Or the faucet according to 2. 5. A lever is urged to a predetermined position by forming a groove on a side portion of the lever and fitting a claw portion of a spring into the groove. The water faucet according to claim 1 or 2.