JP5963107B2 - Hot and cold water faucet - Google Patents

Description

  The present invention relates to a hot and cold water mixing faucet, and more particularly to a hot and cold water mixing faucet having a temperature adjustment handle.

Conventionally, a hot and cold water faucet provided with a shape memory alloy that reacts with heat is known.
In such a hot and cold water mixing faucet, the amount of hot water and water supplied is adjusted and mixed by a spring made of a shape memory alloy that changes its shape in response to heat. To be adjusted. Further, in such a hot and cold water mixing faucet, a desired temperature mixing can be achieved by moving the shape memory alloy spring or changing the force that antagonizes the spring by rotating the temperature adjusting handle. It is known to configure so that hot water is discharged.

In such a hot and cold water mixing faucet, the amount of hot water supplied increases depending on the rotational position of the temperature adjusting handle, and hot water having a temperature close to that of hot water may be discharged. If the user wishes, water discharge at such a temperature is necessary, but if the user accidentally performs the water discharge operation with the temperature adjustment handle rotated to the high temperature side, the user may be burned. There is a fear.
For this reason, conventionally, a temperature higher than a certain level cannot be set unless a safety switch provided on the handle is pressed. (For example, Patent Document 1)
The temperature adjusting handle is usually composed of a metal member such as zinc die cast or brass. Moreover, even if it is a case where it is comprised with resin, in order to improve the designability, the metal plating is mostly given to the surface.

JP-A-2005-273163

  When the outermost surface of a member to which water is applied, such as a temperature adjusting handle of a faucet, is made of metal, corrosion or rust may occur. In particular, in a portion in contact with a sliding member such as a safety button, it is necessary to provide a gap for sliding, and water cannot be completely prevented from entering the inside. In addition, the metal plating and the non-moving body formed on the surface are peeled off by sliding, and corrosion is particularly likely to occur. If corrosion occurs at this location, it will prevent the safety button from sliding, making it impossible to discharge hot water without pressing the safety button, or the safety switch is always pressed and the meaning of the safety switch There is a problem that will disappear.

  The present invention has been made in view of the above circumstances, and in a faucet mixing faucet having a safety button that restricts setting of the temperature adjustment handle to a temperature above a certain level, the safety button is It is an object of the present invention to provide a hot and cold water mixing faucet that suppresses sliding from becoming difficult.

According to the first aspect of the present invention for achieving the above object, there is provided a hot and cold water mixing faucet equipped with a temperature adjusting handle, wherein the temperature adjusting handle suppresses rotation to a region exceeding a certain temperature. And a safety button for releasing the safety device, the handle itself is composed of a base portion connected to the main body and a cover portion covering the periphery thereof, and the cover portion is made of metal or metal plating. The safety button is inserted into a through-hole provided in the cover portion, and a resin bush is provided between the safety button and the cover portion in the through-hole . A hot and cold water mixing faucet is provided.
Thus, by providing a resin bush at a location where friction occurs when in contact with the safety button, it is possible to suppress the deterioration of the sliding of the safety button due to metal corrosion.

According to the invention described in claim 2 for achieving the above object, a spring member for urging the safety button is provided, the spring member is a leaf spring, and the bush covers the whole leaf spring. The hot and cold water mixing plug according to claim 1 is provided.
By covering the leaf spring with the bush, when the leaf spring is slid, it does not directly interfere with the metal portion, so that the metal plating can be prevented from peeling off.

According to invention of Claim 3 for achieving the said objective, The said cover part is manufactured by zinc die-casting, The metal plating is given to the surface, In Claim 1 or 2 characterized by the above-mentioned. A hot and cold water faucet as described is provided.
Zinc die-casting has high castability but poor corrosion resistance, and is likely to generate rust. In order to prevent this and improve the appearance quality, metal plating is generally performed. However, there is a high possibility that the metal plating is peeled off in a sliding part such as in the vicinity of the safety button. In addition, the inner surface of the handle is hard to be plated and rust is likely to occur. Even in such a case, by applying the present invention, it is possible to prevent the safety button from sticking even when used for a long time.

  According to the present invention, even when used in an environment where water adheres for a long time such as in a bathroom or kitchen, the safety button can be prevented from sticking and the safety button can be operated reliably.

1 is an external view of a hot and cold water mixing tap having a temperature adjustment handle according to an embodiment of the present invention. It is sectional drawing of the handle for temperature control by embodiment of this invention. It is sectional drawing of the handle for temperature control by embodiment of this invention. It is a disassembled perspective view which shows the attachment state of the safety button by the embodiment of this invention, a bush, and a leaf | plate spring. It is sectional drawing of the handle for temperature control by embodiment of this invention. Shows the state before the stopper is released. It is sectional drawing of the handle for temperature control by embodiment of this invention. Shows the state after releasing the stopper.

  Hereinafter, a temperature adjustment handle according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is an external perspective view showing a hot and cold water mixing tap A according to the present invention. The hot and cold water mixing tap A includes a temperature adjustment handle 10, a flow rate adjustment handle 11, and a spout 12. The temperature adjusting handle 10 and the flow rate adjusting handle 11 are manufactured by zinc die casting. The hot water / water mixing faucet A is connected to the water supply water channel 13 and the hot water supply water channel 14, and the mixed water is discharged from the spout 12. The hot / cold water faucet A can adjust the water discharge amount by rotating the flow rate adjusting handle 11, and can also make the water discharge amount zero, that is, stop water.

The hot and cold water mixing tap A can adjust the water discharge temperature to a desired temperature by rotating the temperature adjusting handle 10. At this time, in order to set the temperature above a certain level, it is necessary to rotate the temperature adjustment handle 10 while pressing the safety button 2 provided on the temperature adjustment handle 10.

FIG. 2 is an exploded perspective view showing the inside of the temperature adjusting handle 10 according to the embodiment of the present invention. The temperature adjustment handle 10 has a cover portion 15 that covers the periphery thereof, and a base portion 16 (not shown) (see FIG. 4). Moreover, it has the safety button 2, the bush 4, and the leaf | plate spring 5 in the form assembled | attached to the cover part 15. As shown in FIG.

As described above, in the hot and cold water mixing tap A according to the embodiment of the present invention, when the user grasps and rotates the cover portion 15 of the temperature adjustment handle 10, the base portion 16 fitted with the cover portion 15 rotates. In addition, the mixing amount of hot water in the hot water mixing tap A is adjusted so that the water discharge temperature discharged from the spout 12 can be adjusted from water to hot water.

At this time, a safety device is provided for the rotation of the cover portion 15 so that the hot and cold water mixture at a certain temperature or higher is not accidentally discharged. Specifically, as shown in FIG. 5, the temperature adjusting handle 15 is provided with the safety device portion 3, which is in contact with the stopper 6 provided in the hot and cold water mixing tap A, and the cover portion 15 is more than a certain amount. It is configured so that it cannot rotate.

When it is desired to discharge hot water at a certain temperature or higher, the safety device 3 is moved inward of the temperature adjustment handle 10 by intentionally pressing the safety button 2 connected to the safety device 3. Thereby, the contact between the safety device 3 and the stopper 6 is released, and the temperature adjustment handle can be further rotated. That is, it becomes possible to discharge “hot hot water / water mixed water having a certain temperature abnormality.

At this time, since the safety button 2 is constantly urged by the leaf spring 5 toward the outer periphery of the temperature adjustment handle 10, that is, toward the surface of the cover portion 15, the temperature adjustment handle 10 is rotated in the reverse direction, that is, the low temperature side. The safety button 2 and the safety device 3 automatically move in the outer peripheral direction and return to the normal position when moving to a lower temperature side than the position of the stopper 6.

3 is a cross-sectional view of the temperature adjustment handle 10 according to an embodiment of the present invention. The temperature adjustment handle 10 has a structure in which a cover portion 15 surrounds a base portion 16 (see FIG. 4). Further, the temperature adjustment handle 10 is provided with a safety button 2 protruding from the cover portion 15. .

  FIG. 4 shows an enlarged view of the vicinity of the safety button 2 in the sectional view of the temperature adjusting handle 10 shown in FIG. Inside the cover part 15, a base part 16 for transmitting the rotational movement of the cover part 15 to the hot and cold water mixing tap A is provided.

  A through-hole is provided in a part of the surface of the cover part 15, and the safety button 2 is inserted from the inside of the cover part 15 so as to pass therethrough. In addition, a resin bush 4 is provided between the safety button 2 and the cover portion 15 so that the cross section of the cover portion 15 and the safety button 2 are not in direct contact with each other. Further, the safety button 2 and the bush 4 have a structure in which a slight gap is secured for the sliding of the safety button 2.

  Thus, by providing the resin bush 4, when the safety button 2 is moved up and down, even if the safety button 2 and the bush 4 are in contact with each other, a smooth movement can be realized due to the contact between the resins. With respect to the materials used for the safety switch 2 and the bush 4, a smoother movement is possible by using a resin having a low sliding grade and high slidability. Further, even when corrosion or rust is generated in the metal cover portion 15, it is possible to reduce the influence on the sliding of the safety button 2.

  As shown in FIG. 3, the safety button 2 is urged by the leaf spring 5 in the outer peripheral direction of the temperature adjustment handle 10, that is, in the surface direction of the cover portion 15. At this time, since the leaf spring 15 is made of metal, and the gap is provided between the bush 4 and the safety button 2 as described above, the hot water applied to the hot and cold water mixing faucet A is in this gap. As the cover portion 15 enters, rust / corrosion may occur and the rust / corrosion may be transmitted to the cover portion 15. Conversely, the rust of the cover portion 15 is transmitted to the leaf spring 15 and the leaf spring 5 may break.

  In order to suppress this, the bush 4 is configured to cover the entire leaf spring 5 as shown in FIG. 3 so that the cover portion 15 and the leaf spring 5 do not directly contact each other. As a result, the rust / corrosion generated in the leaf spring 5 is prevented from being transmitted to the cover portion 15 as described above, and the leaf spring 5 and the cover portion 15 are slid to be applied to the cover portion 15. It is possible to suppress the surface treatment such as the plating process from being peeled off and the cover portion 15 from being rusted or corroded.

  While the present invention has been described with reference to the embodiments, it is needless to say that the present invention is not limited to the above embodiments. It is possible to design freely without departing from the scope of the present invention. For example, the safety button and the bush may be formed of other resin materials.

1 Temperature control handle 2 Safety button 3 Safety device 4 Bush 5 Leaf spring 6 Stopper

Claims (3)

A hot and cold water faucet equipped with a temperature control handle,
A safety device for suppressing rotation of the temperature adjusting handle to a region exceeding a certain temperature;
A safety button for releasing the safety device,
The handle itself is composed of a base part connected to the main body and a cover part covering the periphery thereof,
The cover part is made of metal or metal plating,
The safety button is inserted into a through hole provided in the cover part,
Wherein in the through-hole, the safety button and mixing valve, characterized in that the resin bush is provided between the cover portion. A spring member for urging the safety button;
The spring member is a leaf spring;
The hot and cold water mixing tap according to claim 1, wherein the bush covers the entire leaf spring.   The hot and cold water mixing faucet according to claim 1 or 2, wherein the cover part is manufactured by zinc die casting, and a metal plating is applied to a surface thereof.