JP2008127739A - Hot-cold water mixed faucet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot-cold water mixed faucet capable of preventing hot water from being wastefully discharged and preventing wasteful use of heater power. <P>SOLUTION: A valve mechanism 2 is provided with a coil spring 26 set to achieve a rate of mixing water of 100% at a position where an operation lever 7 faces the front and increase a rate of mixing hot water as the operation lever 7 turns horizontally and backward from a front position and energizing the operation lever 7 to turn horizontally and return to the front position, a locking piece, and a cut-out part 521 for locking for locking the operation lever 7 against the energizing force of the coil spring 26 by the resistance force exceeding the fixed force at a position where amount of discharge of water is other than zero and the operation lever 7 turns in the vertical direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hot and cold water mixing faucet that supplies hot and cold mixed water, and more particularly to a hot and cold water mixing faucet that reduces heater power for generating hot water.

  FIG. 4 shows an appearance of a conventional hot and cold water mixing faucet. The water faucet has an upright cylindrical casing 81 with a built-in valve mechanism, and a water discharge pipe 82 projects substantially horizontally from the casing 81, and a tip of the water discharge pipe 821 is the tip of the water discharge pipe 821. A thick circular base portion 831 of the operation lever 83 is attached to the upper end portion of the casing 81, and a lever portion 832 protrudes from the base portion 831 at one place on the outer peripheral surface. A water supply pipe and a hot water supply pipe are connected to the inlet side of the valve mechanism in the casing 81, and the outlet side of the valve mechanism communicates with the water discharge pipe 82.

  The base portion 831 of the operation lever 83 and the valve mechanism are interlocked with a known structure, and the mixing ratio of water and hot water discharged from the water discharge pipe 82 is changed by the horizontal rotation operation of the lever portion 832. The amount of water discharged is changed by an operation of turning the lever portion 832 up and down. In this case, the mixing ratio of hot water and water becomes 50% each at the position where the lever portion 832 faces the front, and the mixing ratio of hot water decreases as the lever portion 832 horizontally rotates from the front position to one rear side, The mixing ratio of hot water is set to increase as the lever portion 832 rotates horizontally from the front position to the other rear side.

In Patent Document 1, the operation lever is rotated in the left-right direction to rotate and move the lower movable disk to change the mixing ratio of hot and cold water, and the operation lever is moved up and down to rotate upward. A hot and cold water mixing faucet having a valve mechanism in which the amount of water discharged is changed by linearly moving a disk is shown.
JP-A-2005-76238

   In the conventional hot and cold water mixing faucet, the lever portion 832 is often used at a position facing the front which is easy to operate. Here, FIG. 5 shows a water supply system for this kind of hot and cold water mixing faucet. Water is directly supplied to the faucet 8 through the water supply pipe 3 and water is supplied by the heater 42 in the hot water tank 41. Hot water obtained by heating is supplied to the faucet 8 by the hot water supply pipe 4.

   For this reason, when the lever portion 832 facing forward is turned upward to start water discharge, a certain amount of hot water is always discharged even when it is not needed, and accordingly, water is newly supplied to the hot water tank 41 and the heater is discharged. There is a problem in that energization of 42 is started and power is wasted.

  SUMMARY OF THE INVENTION The present invention solves such problems, and an object of the present invention is to provide a hot and cold water mixing faucet that prevents wasteful discharge of hot water and avoids waste of heater power.

   In order to achieve the above object, in the first invention, the mixing ratio of water and hot water is changed by the horizontal rotation operation of the operating lever (7) and the operating lever (7), and the operating lever (7) In the hot and cold water mixing faucet provided with a valve mechanism (2) that changes the amount of water discharged by a vertical rotation operation, the valve mechanism (2) has a water mixing ratio of 100 at a position where the operation lever (7) faces the front. % And the control lever (7) is set to decrease the mixing ratio of water as it rotates horizontally from the front position to the rear, and the control lever (7) is rotated back to the front position horizontally. The urging means (26) for urging the urging force and the operation lever (7) against the urging force of the urging means (26) at the vertical rotation position of the operation lever (7) where the water discharge amount is other than zero. Locking means for locking with a certain resistance or more (25 , Equipped with a 521) and.

  In the first aspect of the present invention, when the water supply amount is zero, the operation lever is always returned to the front position where it can be easily operated by the urging force of the urging means. Therefore, unless the user specifically intends, if the amount of water discharged is adjusted by rotating the operating lever in the front position as it is, only water will not be discharged and hot water will not be discharged. Wasted power consumption is avoided. When hot water is desired, the control lever is horizontally rotated from the front position to a predetermined position at the rear, and when the control lever is further rotated up and down to discharge water, water and hot water are mixed at a predetermined ratio. Hot water is discharged. In this state, the operating lever is locked with a resistance force greater than a certain level against the urging force of the urging means by the locking means, the return rotation in the front direction is restricted, and hot water discharge continues. . When it is desired to change the mixing ratio of water and hot water, the control lever is horizontally rotated against a certain level of resistance.

  In the second aspect of the invention, the locking means includes a locking piece (251) that can be elastically deformed with a force of a certain level and a locking notch (521) that engages the locking piece (251). .

  In addition, the code | symbol in the said parenthesis shows the correspondence with the specific means as described in embodiment mentioned later.

  As described above, according to the hot and cold water mixing faucet of the present invention, hot water is not discharged unnecessarily, and waste of heater power can be avoided.

    FIG. 1 shows the appearance of a hot and cold water mixing faucet according to an embodiment of the present invention, and FIG. 2 shows an exploded perspective view thereof. The faucet has an upright cylindrical casing 1, and the casing 1 is fixed to a washstand or the like. A water discharge pipe 14 is coupled to the casing 1 at one location on the outer peripheral surface substantially horizontally, and the front end of the water discharge pipe 14 is a water discharge opening 141 facing downward.

  A substantially cylindrical valve mechanism 2 is tightly accommodated in the casing 1. The valve mechanism 2 is provided with a pair of water supply ports 21 and 22 on the lower surface, and a water supply pipe 3 and a hot water supply pipe 4 are connected to the valve mechanism 2 from below. An outlet of mixed water of water and hot water is also provided on the lower surface of the valve mechanism 2, and communicates with the water discharge pipe 14 through a flow path formed in the casing 1. A prismatic operation arm 25 protrudes upward from the upper surface of the valve mechanism 2. The water supply system to the valve mechanism 2 is the same as that shown in FIG.

  In the upper opening 13 of the casing 1, a ring-shaped lid member 5 constituting a locking means is screwed and attached by a screw portion 51 on the outer periphery thereof, and the operation arm 25 of the valve mechanism 2 is centered on the lid member 5. It goes up. A standing wall 52 is formed on the entire upper periphery of the opening edge of the lid member 5, and a number of locking notches 521 are formed in the standing wall 52 at intervals of an angle range of approximately 90 degrees.

  An operation lever 7 is located above the lid member 5. The operation lever 7 is composed of a thick circular base 71 and a lever portion 72 protruding from one place on the outer peripheral surface of the base 71, and the upper end of the operation arm 25 of the valve mechanism 2 is at the center of the lower surface of the base 71. Are combined.

  The operation lever 7 can be rotated horizontally and vertically as indicated by the arrows in FIG. 2 by grasping and operating the lever portion 72. The horizontal rotation operation and the vertical rotation operation of the operation lever 7 are transmitted to the valve mechanism 2 via the operation arm 25. The valve mechanism 2 changes, for example, the mixing ratio of water and hot water discharged from the water discharge pipe 14 by a horizontal rotation operation by a known structure described in Patent Document 1 described above, and the amount of water discharged by a vertical rotation operation. It is supposed to change.

  In the present embodiment, the mixing ratio of hot water and water is 100% at a position where the lever portion 72 faces the front, and the lever portion 72 is substantially from the front position where the notch 521 for locking is formed. The valve mechanism 2 is set so that the water mixing ratio decreases and the hot water mixing ratio increases as the angle range of point symmetry with respect to the 90 degree angle range is horizontally rotated backward. Further, the valve mechanism 2 is set so that the water discharge amount becomes zero when the lever portion 72 is in the horizontal position (water stoppage state), and the water discharge amount increases as the lever portion 72 is rotated upward.

  In the present embodiment, the coil spring 26 is installed between one side surface of the operation arm 25 and the lid member 5, and the operation arm 25 is urged to rotate so that the lever portion 72 returns to the front position by the spring force. ing. Further, as shown in FIG. 3, an elastically deformable locking piece 251 is formed on the side surface of the operation arm 25 opposite to the installation position of the lever portion 72 so as to protrude toward the locking notch 521 of the lid member 5. The locking piece 251 enters the locking notch 521 from above as the operating arm tilts in the same direction as the lever portion 72 is rotated upward except for the horizontal position, and both of them move. The engaged state is established.

  Thereby, when the lever part 72 is rotated upward and is in a water discharge state, the lever part 72 is positioned at a predetermined horizontal rotation position. At this position, only when the lever portion 72 is operated with a certain force or more, the locking piece 251 is bent and elastically deformed to be disengaged from the locking notch 521 and horizontally rotate the lever portion 72. be able to.

  In the hot and cold water mixing faucet having such a structure, the lever portion 72 is always facing forward in an easy-to-operate state by the spring force of the coil spring 26 in the water stop state. Therefore, unless the user specifically intends, the lever portion 72 facing forward is rotated upward as it is to start water discharge, so that only water is not discharged and hot water is not discharged. Wasteful consumption is avoided.

  On the other hand, when hot water is desired, the lever portion 72 is horizontally rotated from the front to a predetermined position on the rear side, and the lever portion 72 is further rotated upward to make the water discharge state. Accordingly, hot water in which water and hot water are mixed at a predetermined ratio is discharged, and the locking piece 251 is engaged with one of the locking cutouts 521, so that the lever portion 72 is at a predetermined horizontal rotation position. Positioned. In this state, when it is desired to change the mixing ratio of water and hot water, when the horizontal turning power of a certain level or more is applied to the lever portion 72, the locking piece 251 is elastically deformed and the engagement with the locking notch 521 is released. Thus, a horizontal rotation operation is possible. Then, the locking piece 251 is engaged with the new locking notch 521 at the new horizontal rotation position, and the lever portion 72 is positioned. When the lever portion 72 is rotated to the horizontal position below to be in a water-stopping state, the locking piece 251 escapes upward from the locking notch 521 to release the engagement, whereby the lever portion 72 is coil spring. It is returned to the front direction by 26 spring force.

It is a perspective view which shows the external appearance of the hot and cold water mixing faucet which shows one Embodiment of this invention. It is a disassembled perspective view of a hot and cold water mixing faucet. It is a top view of the lid member of a hot and cold water mixing faucet. It is a perspective view which shows the external appearance of the conventional hot water / water mixing faucet. It is a figure which shows the water supply system | strain of a hot and cold water mixing faucet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Casing, 2 ... Valve mechanism, 251 ... Locking piece (locking means), 26 ... Coil spring (biasing means), 3 ... Water supply pipe, 4 ... Hot water supply pipe, 5 ... Lid member, 521 ... Locking Notch (locking means), 7 ... operating lever.

Claims (2)

In a hot and cold water mixing faucet comprising: an operating lever; and a valve mechanism that changes a mixing ratio of water and hot water by a horizontal turning operation of the operating lever and changes a water discharge amount by an up and down turning operation of the operating lever. The valve mechanism is set so that the mixing ratio of water becomes 100% at the position where the operation lever faces the front and the mixing ratio of water decreases as the operation lever horizontally rotates from the front position to the rear. And an urging means for urging the operation lever to horizontally return and rotate to the front position, and an urging force of the urging means at a vertical rotation position of the operation lever where the water discharge amount is other than zero. A hot and cold water mixing faucet provided with locking means for locking the operation lever with a resistance force higher than a certain level. The hot and cold water mixing faucet according to claim 1, wherein the locking means includes a locking piece that can be elastically deformed by a force of a certain level or more and a locking notch that engages the locking piece.

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