JP4177767B2 - Thermo-type water / water mixing faucet - Google Patents

Description

The present invention relates to a thermo-type hot and cold water mixing faucet.

The present applicant has proposed a thermo-type hot and cold water mixing tap having an automatic temperature control function as shown in FIGS. 4 and 5 (Japanese Patent Application No. 2002-328208, but not so-called publicly known public use). 4 and 5, reference numeral 1 denotes a valve body, which is located in a tubular temperature control housing V installed inside the tubular faucet body A. Reference numeral 2 denotes a thermo element 2 having a thermo wax 2a and a piston 3, and a valve body 1 is attached to an outer cylinder 2b of the thermo element 2 by screws. The valve body 1 is displaced in the longitudinal direction of the faucet body A together with the thermo element 2 by expanding or contracting the thermo wax 2a when the thermo element 2 senses the temperature of the hot water, and extending or contracting the piston 3. The clearance with the valve seat 4 and the clearance with the water valve seat 5 are adjusted. A mixing chamber 6 in which hot water and water that have passed through the gaps are mixed is provided downstream of the valve body 1. In addition, a fixed housing 8 is provided at one end of the faucet main body A in which the sliding means 7 that slides in the longitudinal direction is accommodated. When the operation is performed so as to discharge only water, as shown in FIG. 6 (A), the contact position P ₁ is the temperature control handle while the tip 3a of the piston 3 is in contact with the slide means 7. When the slide means 7 is slid away from 9 in the longitudinal direction and only hot water is discharged, as shown in FIG. 6 (G), the abutting position of the piston tip 3a and the slide means 7 The temperature control handle 9 for sliding the slide means 7 is provided on the side opposite to the faucet body A of the fixed housing 8 so that P ₂ is closest to the temperature control handle 9 in the longitudinal direction. . In addition, when the temperature control handle 9 is operated from a state in which only water is discharged to a state in which mixed water is discharged, the slide means 7 slides in a direction away from the piston tip toward the temperature control handle 9 side, whereby a water valve in a direction narrowing the inter-gap between the seat 5 and the valve body 1 and is provided with a spring S for biasing the valve body 1 in the direction the slide means 7 side to widen the gap between the hot water valve seat 4 and the valve body 1 .

  The slide guide means 7 is configured to move forward and backward linearly along the longitudinal direction by rotating the temperature control handle 9 around the longitudinal direction. A plate member 7a formed with a recess 11 having a bottom surface with which 3a can abut, a screw rod receiving member 7b meshed with a screw rod 12 connected to a plug rod 9a of a temperature control handle 9, both members 7a, A spring 7c interposed between 7b and a connecting wire 7d that couples both members 7a and 7b via the spring 7c are provided. 50 is an annular flange provided at a predetermined position of the screw rod 12, and an outer peripheral surface portion 50 a of one surface of the flange 50 can slide around the central axis of the flange 50 on the inner end surface 8 a on the temperature control handle side of the fixed housing 8. Abut.

  However, when there is a difference between the hot water supply pressure of the hot water flowing through the gap between the hot water valve seat 4 and the valve body 1 and the water supply pressure of the water flowing through the gap between the water valve seat 5 and the valve body 1, the hot water supply pressure is, for example, When the temperature is increased abnormally, when the temperature control handle 9 is operated from a state in which only water is discharged to a state in which mixed water at a predetermined temperature (for example, 40 ° C.) is discharged (see FIG. 6B), the piston The valve body 1 narrows the gap between the water valve seat 5 and the valve body 1 by the urging force of the spring S before 3 reaches the state shown in FIG. Then, the slide between the hot water valve seat 4 and the valve body 1 is made to widen. Therefore, although hot, hot water discharges from the water discharge pipe. As shown in FIG. 6 (C), only hot water is discharged and hot until the mixed water of a predetermined temperature (for example, 40 ° C.) as shown in FIG. 6 (H) is discharged. ), The valve body 1 slides and only water flows so as to narrow the gap between the hot water valve seat 4 and the valve body 1 while the piston 3 extends at a stretch and the piston tip 3a contacts the sliding means 7. 6 (E), the piston 3 contracts and the piston tip 3a moves away from the slide means 7, and the valve body 1 is biased by the spring S as shown in FIG. 6 (F). By means of this, the gap between the water valve seat 5 and the valve body 1 is narrowed and the gap between the hot water valve seat 4 and the valve body 1 is widened. The valve body 1 is in the final position as shown in FIG. It will be settled on location. As described above, the valve body 1 alternately closes the gaps to discharge only hot water, discharge only water, or discharge only hot water again, and hunting occurs in the water discharge amount. .

  The present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to provide a thermo-type hot and cold water mixing faucet that can prevent hunting from occurring in the water discharge amount.

In order to achieve the above object, the thermo-type hot / cold water faucet of the present invention is such that when the temperature of the hot water is sensed by the thermo element inside the faucet body, the thermo wax expands or contracts and the piston extends or contracts. In order to adjust the gap between the thermo valve element and the hot water valve seat and the water valve seat, a valve body is provided, a mixing chamber is provided downstream of the valve body, and slides in the longitudinal direction of the faucet body. A fixed housing in which the sliding means is housed is provided at one end of the faucet body, and when operated to discharge only water, the abutting position of the piston is in contact with the sliding means. When the slide means is slid so as to be farthest from the temperature control handle and only hot water is discharged, the contact position is closest to the temperature control handle. When the temperature control handle for sliding the slide means is provided on the side of the fixed housing opposite to the faucet body, while the temperature control handle is operated from a state of discharging only water to a state of discharging mixed water A thermo-type hot water provided with a spring for urging the valve body toward the slide means so as to narrow a gap formed by separating the slide means and the tip of the piston to open a gap between the valve seat and the valve body In the mixing faucet,
When the temperature control handle is operated from a state in which only water is discharged to a state in which only hot water is discharged, the thermo-element senses the temperature of the hot water and the piston extends, and the piston further extends to the sliding means. relaxes the force that presses the thereby Rutotomoni water, an elastic member which can flow water simultaneously into the mixing chamber is provided,
The elastic member is a bending washer interposed between an inner end surface of the fixed housing on the temperature control handle side and the sliding means .

In this invention, when the operating state to the temperature control handle for ejecting the cups from the state was ejected only water, the temperature of the hot water the thermoelement sensitive raised elongation the piston, further wherein the piston Is provided with a bending washer interposed between the inner end surface of the fixed housing on the temperature control handle side and the slide means as an elastic member that relieves the force that presses the slide means. When it becomes abnormally large, for example, the state shown in FIG. 6C can be prevented from changing to the state shown in FIG. That is, when the temperature control handle is operated from a state in which only water is discharged to a state in which mixed water is discharged, the slide means moves away from the tip of the piston (see FIG. 6 (B)), and the thermoelectric force is applied by the urging force of the spring. Along with the element, the valve body is displaced in a direction to widen the gap between the hot water valve seat and the valve body (see FIG. 6C), and only hot water is discharged. In the prior invention, the thermoelement senses the temperature of the hot water and the piston extends at a stretch so that the piston extends while pressing the slide means (see FIG. 6D). There only water flows is displaced in the direction of opening the gap between the water valve seat and the valve element closes the gap between the hot water valve seat and the valve body, in this invention, the bending washer, thermoelement the temperature of the hot water Since the temperature of the piston is extended and the force of the piston pressing the sliding means is relaxed, hunting is unlikely to occur in the water discharge amount after only hot water is discharged. That is, in the present invention, the valve body gradually closes the gap between the hot water valve seat and the valve body from the state where only the gap between the hot water valve seat and the valve body is opened by the bending washer . The gap between the body and the hot water valve seat and the valve body can be prevented from closing at once, and the hot water and the water valve seat and the valve body between the hot water valve seat and the valve body can be prevented during the relaxation period. In the invention of the prior application, the thermoelement senses the temperature of the mixed water and the piston extends while the tip of the piston contacts the sliding means. However, in the present invention, mixed water having a predetermined temperature (for example, 40 ° C.) as shown in FIG. 6 (H) is avoided while avoiding such a situation. Will settle into a state of discharge.

  Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited thereby.

FIG. 1 shows a reference example in which a spring is interposed between a thermo element and a sliding means. Also, since the only difference from the conventional example shown in FIGS. 4 and 5 is that the spring is provided, the reference numerals shown in FIGS. 4 and 5 are used in FIG. 1 as they are, and the description thereof is omitted. To do.

In FIG. 1, reference numeral 20 denotes a spring interposed between the bottom surface B of the recess 11 formed in the plate member 7 a of the slide guide means 7 and the thermo element 2. The thermo element 2 has a bowl-shaped washer 21 provided coaxially with the central axis X of the outer cylinder 2b at the end of the outer cylinder 2b on the slide guide means side, and the plate member 7a extends from the end side of the outer cylinder 2b. There is a stop ring 22 that abuts against the washer 21 when the piston 3 is contracted most at a predetermined position of the piston 3 protruding to the side. The spring 20 is provided between the bottom surface B of the recess 11 of the plate member 7 a and the washer 21. 23 is a cylindrical hot water valve seat member in which a ring-shaped hot water valve seat 4 is formed, and 24 is a cylindrical water valve seat member in which a ring-shaped water valve seat 5 is formed. A water valve seat member 24 is arranged on the slide guide means side with respect to the valve body 1 such that the water valve seat 5 faces one side of the valve body 1 and is opposite to the slide guide means side with respect to the valve body 1. On the side, the hot water valve seat member 23 is arranged so that the hot water valve seat 4 faces the other side of the valve body 1.

Thus, when the temperature control handle 9 is operated from a state where only water is discharged to a state where mixed water is discharged, the bottom surface B of the recess 11 of the plate member 7a is separated from the piston tip 3a. The valve element 1 together with the thermo element 2 by the urging force of the spring S is displaced at a stretch in the direction of widening the gap between the hot water valve seat 4 and the valve body 1, and only hot water is discharged. In this reference example , Since the spring 20 relaxes the displacement of the 1 and the thermo element 2 in the direction of widening the gap between the hot water valve seat 4 and the valve body 1, it is possible to prevent hunting from occurring in the water discharge amount. That is, it is possible to prevent a situation in which the gap between the water valve seat 5 and the valve body 1 is closed at a stretch by the biasing force of the spring S before the piston 3 is fully extended, and the gap between the hot water valve seat 4 and the valve body 1 can be prevented during the relaxation period. From the gap between the water valve seat 4 and the valve body 1 flows into the mixing chamber 6 at the same time. In the invention of the prior application, the thermoelement 2 senses the temperature of the mixed water and the piston tip Since the piston 3 extends until 3a comes into contact with the bottom surface B of the recess 11 of the plate member 7a, a situation occurs in which hot water is discharged from the water discharge pipe instantaneously, but in this reference example , these situations are avoided. However, it will settle in the state which the mixed water of predetermined temperature (for example, 40 degreeC) discharges.

FIG. 2 shows another reference example in which a spring 30 is interposed between the valve body 1 and the water valve seat member 24. 2, the same reference numerals as those shown in FIGS. 2, 4 and 5 are the same or equivalent.

Also in this case, when the temperature control handle 9 is operated from a state where only water is discharged to a state where mixed water is discharged, the bottom surface B of the recess 11 of the plate member 7a is separated from the piston tip 3a. The valve element 1 together with the thermo element 2 by the urging force of the spring S is displaced at a stretch in the direction of widening the gap between the hot water valve seat 4 and the valve body 1, and only hot water is discharged. In this reference example , Since the spring 30 relaxes the displacement of the 1 and the thermo element 2 in the direction of widening the gap between the hot water valve seat 4 and the valve body 1, it is possible to prevent hunting from occurring in the water discharge amount. That is, it is possible to prevent a situation in which the gap between the water valve seat 5 and the valve body 1 is closed at a stretch by the biasing force of the spring S before the piston 3 is fully extended, and the gap between the hot water valve seat 4 and the valve body 1 can be prevented during the relaxation period. From the gap between the water valve seat 4 and the valve body 1 flows into the mixing chamber 6 at the same time. In the invention of the prior application, the thermoelement 2 senses the temperature of the mixed water and the piston tip Since the piston 3 extends until 3a comes into contact with the bottom surface B of the recess 11 of the plate member 7a, a situation occurs in which hot water is discharged from the water discharge pipe instantaneously, but in this reference example , these situations are avoided. However, it will settle in the state which the mixed water of predetermined temperature (for example, 40 degreeC) discharges.

FIG. 3 shows that when the temperature control handle 9 is operated from a state where only water is discharged to a state where only hot water is discharged, the thermo-element 2 senses the temperature of the hot water and the piston 3 extends. 3 shows an embodiment of the present invention in which a bending washer 33 is provided as an elastic member 3 to relieve the force of pressing the bottom surface B of the recess 11 of the plate member 7a. 3, the same reference numerals as those shown in FIGS. 2, 3, 4, and 5 are the same or equivalent.

The bending washer 33 have a resilient formed by twisting an annular metallic member, and the inner end face 8a of the temperature adjustment handle side of the fixed housing 8, is interposed between the sliding means 7. That is, the screw rod 12 is provided between the outer peripheral surface portion 50 a of one surface of the annular flange 50 provided at a predetermined position and the inner end surface 8 a on the temperature control handle side of the fixed housing 8.

Thus, when the temperature control handle 9 is operated from a state where only water is discharged to a state where mixed water is discharged, the bottom surface B of the recess 11 of the plate member 7a is separated from the piston tip 3a and the spring S is attached. The valve element 1 together with the thermo element 2 is displaced in a direction to widen the gap between the hot water valve seat 4 and the valve element 1 by force, and only hot water is discharged. In the invention of the prior application, the temperature of the hot water is Since the piston 3 extends at a stretch so that the piston 2 can be extended while pressing the bottom surface B of the recess 11 of the plate member 7a by sensing the temperature, the valve body 1 closes the gap between the hot water valve seat 4 and the valve body 1 and water. In this embodiment, only the water flows in the direction of opening the gap between the valve seat 5 and the valve body 1. However, in this embodiment, the bending washer 33 detects the temperature of the hot water and the thermoelement 2 detects the temperature, and the piston 3 extends. Furthermore, piston 3 Since relaxing the elongation force as possible elongation while pressing the bottom surface B of the recess 11 of the plate member 7a, it can be so hard to cause hunting water discharge amount after the hot cups is discharged. That is, since only the gap between the hot water valve seat 4 and the valve body 1 is opened by the bending washer 33, the valve body 1 gradually closes the gap between the hot water valve seat 4 and the valve body 1, so that the water valve seat 5 The gap between the valve body 1 and the valve body 1 opens at once, and the situation where the gap between the hot water valve seat 4 and the valve body 1 is closed at once can be prevented, and hot water and water from the gap between the hot water valve seat 4 and the valve body 1 can be prevented during the relaxation period. Water from the gap between the valve seat 4 and the valve body 1 flows into the mixing chamber 6 at the same time. In the invention of the prior application, the thermoelement 2 senses the temperature of the mixed water, and the piston tip 3a is moved to the plate member 7a. Since the piston 3 extends while coming into contact with the bottom surface B of the recess 11, there is an instantaneous situation that the gap between the hot water valve seat 4 and the valve body 1 is closed. While avoiding the situation, the mixed water at a predetermined temperature (for example, 40 ° C.) is discharged. It will be Chitsuku.

It is principal part structure explanatory drawing which shows a reference example . It is principal part structure explanatory drawing which shows another reference example . It is principal part structure explanatory drawing which shows one Embodiment of this invention. It is principal part structure explanatory drawing which shows prior invention. It is a figure which shows the automatic temperature control operation | movement in the said prior application invention. (A)-(H) are figures which show the automatic temperature control operation | movement in the said prior application invention in process order.

Explanation of symbols

First valve body 2 thermoelement 2a thermowax third piston 3a piston tip 4 hot water valve seat 5 water valve seat 6 mixing chamber 7 sliding means 8 fixed housing 33 bend the washer A faucet body P _1, P ₂ contacting position S Spring

Claims (1)

When the thermoelement senses the temperature of the hot water in the faucet body, the thermowax expands or contracts and the piston extends or contracts, thereby displacing together with the thermoelement, and the gap between the water valve seat and the water valve seat. A valve body is provided so as to adjust the gap between the valve body, a mixing chamber is provided downstream of the valve body, a fixed housing in which a sliding means for sliding in the longitudinal direction of the faucet body is housed is provided at one end of the faucet body Further, when the operation is performed to discharge only water, the slide means is slid so that the contact position is farthest from the temperature control handle while the tip of the piston is in contact with the slide means, and only hot water is poured. When operating to discharge, the temperature control handle for sliding the slide means is fixed so that the contact position is closest to the temperature control handle. When the temperature control handle is operated from a state where only water is discharged to a state where mixed water is discharged, the sliding means and the piston tip are separated while being provided on the side opposite to the faucet body of Uzing In the thermo-type hot and cold water mixing faucet provided with a spring that biases the valve body toward the slide means so as to narrow the gap formed and open the gap between the hot water valve seat and the valve body,
When the temperature control handle is operated from a state in which only water is discharged to a state in which only hot water is discharged, the thermo-element senses the temperature of the hot water and the piston extends, and the piston further extends to the sliding means. relaxes the force that presses the thereby Rutotomoni water, an elastic member which can flow water simultaneously into the mixing chamber is provided,
The thermo-type hot / cold water faucet characterized in that the elastic member is a bending washer interposed between an inner end surface of the fixed housing on the temperature control handle side and the sliding means .

Images