JP3115988B2 - Single-lever water / water mixer tap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single lever type hot / water mixer tap provided with a click mechanism for adjusting the turning operation of a lever when the handle is turned up and down.

[0002]

2. Description of the Related Art As a hot water mixer tap which mixes hot water at an appropriate ratio by operating a lever and discharges hot water at a desired temperature, for example, as disclosed in Japanese Utility Model Publication No. 63-2706, A fixed disk made of ceramic, having a valve hole for hot water and water communicated with the water intake side and a valve hole for mixed water communicated with the discharge side of the mixed water in a watertight state, respectively. A movable disk made of ceramic slidably mounted thereon is interlocked with a lever provided on an upper portion of the main body via a support member made of a synthetic resin material mounted thereon, and the movable disk is And a support member, an internal flow path is formed for circulating the hot water and hot water introduced from the valve hole for water to the valve hole for mixed water. The mixing ratio of There are those to be adjusted.

[0003]

However, in the above-mentioned conventional hot / water mixer tap, the water discharge amount suddenly changes at the time of closing and a water hammer (water hammer) may occur.

[0004] The present invention has been made in view of the above problems, and has as its object to provide a single-lever type hot / water mixer tap which does not generate a water hammer.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a cartridge case body provided in a hot / water mixer tap body having a hot water inlet, a water inlet, and a hot / cold mixed water discharge port. A movable valve body for adjusting the mixing ratio of hot and cold water is slidably mounted on the fixed valve body fixed to the bottom in a watertight state in a watertight state. An internal flow path for circulating hot and cold water introduced from the valve hole and the water valve hole to the mixed water valve hole is formed, and a disk guide is mounted on the movable valve body. The lower end of a lever having an upper end protruding upward from the upper part is interlocked with the movable valve body, and when the handle attached to the upper end of the lever is turned left and right with respect to the hot water mixer tap body, the disc turns with the lever. By guide The valve body rotates, and water, hot water, or mixed hot and cold water flows into the internal flow path in response to the turning operation, and the water, hot water, or mixed hot and cold water flows through the mixed water valve hole. When the handle is turned up and down with respect to the hot and cold water mixing tap main body while the water is discharged through the hot and cold water mixing port, the movable valve body moves by the rotation of the lever, and the water, hot water, or Spout of hot and cold water
Switching the water stop state, the lever is pivotally supported at its intermediate portion on a pin shaft provided on the disc guide,
The upper surface of the disc guide and the click portion on the lever side corresponding to the upper surface are provided with a click mechanism for adjusting the turning operation of the lever when the handle is turned up and down. A cylindrical body having a convex portion and detachable with respect to the lever, a cylindrical guide for urging the cylindrical body against the upper surface of the disk guide by a spring, and the convex along the rotation direction of the lever. A recess formed on the upper surface of the disc guide so as to have a sliding path in which the portion can slide, and the lever, and the recess is formed by turning the handle up and down. After sliding on the slideway, it comes into contact with the handle, and the handle is turned up and down to form a fully open / closed state when the convex portion climbs up. Both And having respectively.

That is, according to the present invention, when water is discharged and stopped by turning the handle up and down, the click mechanism can easily and reliably set the position of the movable valve body with respect to the fixed valve body. It is easy to adjust the discharge amount.

[0007] In addition, while the convex portion is formed on the cylinder body detachable from the lever, a concave portion is formed on the upper surface of the disk guide so as to have a sliding path along the rotation direction of the lever. In addition, the convex portion is slid, and a water discharging step / water stopping step large enough to allow the convex portion to ride on the sliding path is provided. The water saving state can be formed at the point in time when the convex portion that slides on the water contact step.

For example, in the case where the water discharge step is not provided, even when it is not necessary to form a fully open state where the discharge amount is large, an excessive amount of rotation is required by the user's turning operation of the handle. In contrast to the possibility of discharging mixed water, hot water, or water, according to the present invention, when the handle is turned further at the point where the protrusion that slides on the slideway starts to contact the water discharge step, the handle is fully opened. It is configured such that a load is applied to the handle operation so that the user can recognize that the operation becomes impossible. Therefore, the adjustment of the discharge amount can be further improved in that the water saving state can be easily formed.

Further, when stopping the water, the discharge amount decreases as the convex portion slides on the slideway and approaches the water stopping step, and the convex portion immediately before forming the fully closed state is reduced. Since the state of preventing water hammer is formed at the time of contact with the water stopping step, the water hammer is prevented from being suddenly closed at once, thereby preventing the occurrence of water hammer.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. It should be noted that the present invention is not limited thereby. 1 and 2, a hot and cold water mixing tap main body (hereinafter simply referred to as a main body) 1 having a hot water inlet (not shown), a water inlet W and a hot and cold water mixing port M.
A movable valve body 4 for adjusting the mixing ratio of hot and cold water is slidably mounted on a fixed valve body 3 fixed in a watertight state at the bottom of a case body 2a of a cartridge 2 provided therein in a watertight state. The movable valve body 4 has a hot water valve hole 3 of the fixed valve body 3.
a, mixing the hot and cold water introduced through the water valve hole 3b with the mixed water valve hole 3c;
And an internal flow path d for circulating water is formed,
A disk guide 5 is mounted on the movable valve body 4, and a lower end 6 b of a lever 6 having an upper end 6 a protruding from the upper part of the main body 1 is interlocked with the movable valve body 4.
When the handle 7 attached to a is rotated left and right with respect to the main body 1, the movable valve element 4 is rotated by the disk guide 5 that rotates together with the lever 6, and water, hot water or hot and cold water is mixed in accordance with the turning operation. While flowing into the internal flow path d and discharging the water, hot water, or hot / cold mixed water through the hot / cold mixed water discharge port M through the mixed water valve hole 3c,
When the handle 7 is turned up and down with respect to the main body 1 (in the direction of the arrow indicated by A), the movable valve body 4 is moved by the rotation of the lever 6, and the water, hot water, or mixed water is discharged and stopped. The lever 6 is pivotally supported at its intermediate portion by a pin shaft 48 provided on the disk guide 5, and the upper surfaces 5a, 5a of the disk guide 5 and the upper surfaces 5a, 5a
A click mechanism for adjusting the turning operation of the lever 6 when the handle 7 is turned up and down is provided at the corresponding click portion on the lever 6 side.

The click mechanism will be further described with reference to FIGS. 3 to 5. The click mechanism has a pair of convex portions 8a, 8a formed at opposing lower surfaces.
A cylinder 8 detachable from the lever 6, and the cylinder 8
The upper surface 5a, 5a of the disk guide 5 is
Are formed on the upper surfaces 5a, 5a of the disc guide 5 so as to have a cylindrical guide 42 that urges the disk guide 5 and sliding paths R, R in which the protrusions 8a, 8a can slide along the rotation direction of the lever 6. It is composed of a pair of recesses 9, 9 and a lever 6, and the recess 9 comes into contact after the convex portion 8a slides on the slide path R due to the vertical turning operation of the handle 7. When the convex portion 8a rides up and down by turning up and down, the water discharging step 10 which forms a fully open state (a state shown by a solid line in FIG. 6) is provided on one side of the slide path R, and the convex portion 8a rides up. And a completely closed state (a state shown by a two-dot chain line in FIG. 6) on the other side of the slideway R. Reference numeral 12 denotes a ring.

The main body 1 will be described in detail with reference to FIG. 1 and FIG.
And a hot water chamber, a water chamber 22 and a water discharge hole 23 below. The partition wall 20 has a hot water inlet and a water inlet W.
And a hot / cold mixed water discharge port M, respectively.

A replaceable cartridge 2 is mounted in the valve chamber 21 in a water-tight manner with the valve chamber 21, and an attachment 24 for hot water communication having a hot water flow hole 30 is provided at the hot water inlet. Attachments 26 for water communication having water circulation holes 25 are fitted to the water introduction ports W, respectively.

The case 2a of the cartridge 2 has an open bottom, and a plurality of engagement recesses 31 having different circumferential lengths are formed on the inner peripheral surface of the lower end at predetermined intervals in the circumferential direction. A fixed valve body 3 integrally formed of a synthetic resin material is fixedly attached to the bottom of the case body 2a in a watertight state, and a movable disk 4a made of ceramic is closely mounted on the fixed valve body 3. And a support member 4b made of a synthetic resin material is mounted on the movable disk 4a so as to be non-rotatable.
Further, a disk guide 5 made of a synthetic resin material is slidably mounted on the support member 4b, and the movable valve body 4 is constituted by the movable disk 4a and the support member 4b.

A lever 6 made of a metal material is pivotally mounted on the disk guide 5, and a lower end of the lever 6 engages with a concave portion of the support member 4b, and has an upper end for operation made of a synthetic resin material. The handle 7 is fixed. Further, engaging projections 34, 34 projecting outward at predetermined circumferential intervals are integrally formed on a shoulder 33 below the upper opening 32 of the cartridge 2. , 34 are fitted into engagement notches 1b, 1b formed in the opening 1a of the main body 1, so that the relative positions of the two are restricted. Further, the fixed valve body 3 is integrally formed of a hard resin material such as a carbon fiber reinforced type of polyphenylene sulfide resin to improve sealing performance, reduce the number of parts, prevent ringing, and operate It is said that the property has been improved.

A pin 48 for pivotally supporting the lever 6 is inserted into a shaft hole 40 formed at a lower portion of the disc guide 5, and
And the upper surface 5a of the disk guide 5 and the upper surface 5a.
The above-mentioned click mechanism is provided on the cylindrical body 8 which is a click portion on the lever 6 side corresponding to a and 5a.

The discharge amount can be adjusted by the lever 6, whereby the occurrence of water hammer can be effectively prevented and water can be saved.

That is, as shown in FIG. 6, when the convex portion 8a gets over the water discharging step 10, it is fully opened (the state shown by the solid line in FIG. 6), and the discharge amount can be increased. When the vehicle gets over the water stoppage step 11 provided on the other side of the slideway R, it becomes a fully closed state (a state shown by a two-dot chain line in FIG. 6) and stops water. For example, when the operating handle 7 is pushed upward, the lever 6 is turned counterclockwise in FIG. 1 and the movable valve body 4 is linearly moved forward (to the right in the figure) via the disk guide 5. It is pushed and moved. Due to the movement of the movable valve body 4, the elongated holes 60 of the movable disk 4a simultaneously reach the hot water of the fixed valve body 3 and the opening areas of the water valve holes 3a and 3b, thereby opening the hot water and water inflow passages. Flows into the internal flow passage d from the hot and cold water valve holes 3a, 3b,
The mixed water is discharged from a discharge pipe (not shown) from the mixed water valve hole 3c through the hot / cold mixed water discharge port through the valve chamber 21 of the main body 1. At this time, the rotation of the lever 6 is adjusted by the click mechanism. Therefore, the setting of the discharge amount is extremely easy and reliable. In addition, as shown in FIG. 8, a load is applied to the handle operation at a point where the convex portion 8a that slides on the slide path R starts to hit the water discharging step 10, and when the handle is further turned, the handle is fully opened. It can be recognized by the user. Therefore, in the case where the water discharge step is not provided, even when the discharge amount does not need to be large, an excessive amount of mixed water can be generated by the turning operation of the handle 7 performed by the user.
In contrast to the possibility of discharging hot water or water, in this embodiment, water can be saved. Conversely, when the handle 7 is pushed down, the turning operation of the lever 6 is adjusted, and the lever 6 is not completely closed at a stretch. As shown in FIG.
As the convex portion 8a slides on the slide path R and approaches the water stop step 11, the discharge amount decreases, and further, the water stop step 11
The convex portion 8a comes into contact with the water stop step 11 just before the vehicle gets over and forms a fully closed state. At this point, although the discharge amount is small, hot water or water is slightly discharged instead of zero. Therefore, even if the convex portion 8a crosses the water stopping step 11, water hammer does not occur, and the occurrence of water hammer is prevented.

The cylindrical body 8 is formed of the same material as the disk guide 5. Therefore, a projection is formed on a lever made of a much harder metal than the disk guide 5, for example, a material made of stainless steel. In comparison with the click mechanism of this embodiment, it is necessary to separately form a concave portion with a leaf spring made of spring steel of the same material as the lever, as in the comparative example. This has the advantage that the click mechanism can be easily formed.

Furthermore, in the comparative example, the concave portion formed in the leaf spring is severely worn. On the other hand, this embodiment has an advantage that the life of the click mechanism can be extended.

Further, the fixed valve body 3 is formed by integrating a conventional fixed disk and a lower disk, and communicates with the hot water inlet, the water inlet, and the hot / cold mixed water discharge port of the main body 1 as described above. A hot water valve hole 3a, a water valve hole 3b, and a mixed water valve hole 3c are formed in a hole, and a packing material is inserted into each of the holes to extend upward over the entire peripheral edge of the bottom wall. Are integrally formed, and the fixed valve body 3 is fitted therein. A protruding piece 5 is fitted on the outer peripheral surface of the lower end of the rising wall 50 in the engaging recess 31 of the case body 2a to define a relative fitting position between the two.
1 are integrally provided.

The opening on the lower surface side of the valve hole 3a for hot water, the valve hole 3b for water, and the valve hole 3c for mixed water is formed in a circular shape, but the opening shape on the upper surface side is an oval. The hot water valve hole 3a and the water valve hole 3b are formed to communicate with the hot water inlet and the water inlet formed in the main body 1 through the hot water flow holes 30 and 25 of the attachments 24 and 26, respectively. Further, a mixed water valve hole 3c is communicated with the hot / cold mixed water discharge port.

As described above, the fixed valve body 3 is easy to mold with a synthetic resin material, is easy to machine, has a reduced number of parts, has extremely good assemblability, and is easy to manufacture. At low cost. Further, since its hardness is lower than that of the movable disk 4a made of ceramic, mutual sliding contact operation becomes smooth, troubles such as occurrence of ringing are solved, and it is possible to make the sliding contact between ceramics in comparison with the related art. Operability is remarkably improved.

Further, since the fixed valve body 3 is integrally formed, the sealing performance is remarkably improved. In other words, when two fixed valve bodies are combined by a fixed disk and a lower disk as in the related art, seals on the upper surface, the lower surface, and the vertical direction are required. Reference numeral 3 indicates only the upper and lower seals, and the number of water leakage elements is reduced.

The movable disk 4a of the movable valve body 4 corresponding to the fixed valve body 3 is made of ceramic material as in the case of the fixed valve body 3, and has a valve hole 3 for mixed water of the fixed valve body 3 in the center.
c and always communicates with the hot water valve hole 3a and the water valve hole 3b.
And a long hole 60 selectively communicated with.

The support member 4b of the movable valve body 4 is made of plastic material, and is a circle which is fitted on the lower surface of the central portion in a watertight manner inside the peripheral wall 61 of the movable disk 4a via the packing 63. A plate-shaped fitting body 64 is provided to project integrally. Further, a concave portion 65 having a size similar to that of the elongated hole 60 of the movable disk 4a is formed at the center of the fitting body 64, and this concave portion 65 is an example of a rectifying body that prevents cavitation and mutes sound. Rectifying fins 66 are formed integrally. A plurality of the rectifying fins 66 are provided at predetermined intervals in a direction orthogonal to the long axis direction of the long hole 60 of the movable disk 4a, and have a length extending over the entire length of the concave portion 65 in the long axis direction. (5).
The lower protruding edges of these rectifying fins 66 are set so as to protrude outward from the back surface of the fitting body 64, and the specific size of the protruding amount is such that the support member 4b is fitted to the movable disk 4a. When the rectifying fins 66 are
And its protruding edge is about 1
/ 4 is set. Therefore, by the elongated hole 60 and the concave portion 65, when the movable valve body 4 is in the valve-opening position, an internal flow for allowing one or both of the hot water inflow passage and the water inflow passage to communicate with the mixed water outflow passage c. The passage d is formed, and the rectifying fins 66 are arranged in the internal passage d.

Although the rectifying fins 66 are arranged via recesses 65 formed in the support member 4b in the illustrated example, the fitting bodies 64 can be formed without forming the recesses 65 as necessary. May be directly protruded from the back surface of the device.

A pair of guide ridges 70 are provided on the surface side of the support member 4b at predetermined intervals in parallel with the longitudinal direction of the recess 65, and the movable disk 4a
The protrusions 71 are provided integrally with the notch step portions 62 formed on the peripheral wall of the movable member 4a to regulate a predetermined relative fitting position between the movable disk 4a and the support member 4b. A round hole is formed in the center of the surface between the guide ridges 70.

Further, the disk guide 5 is made of plastic material, and a locking projection 80 integrally formed at an appropriate position on the outer periphery is provided with the case 2 of the cartridge 2.
a, is formed to be rotatable by a predetermined amount by being fitted into an inner groove formed on the inner surface of a, and a concave groove 81 is integrally formed on the lower surface thereof. Is slidably fitted, while the central through hole 8
2, the lever 6 is rotatably supported via a pin 48 inserted into the shaft hole 83, and the lower end projection 6b of the lever 6 is fitted into the round hole of the support member 4b.

After the cartridge 2 constructed as described above is inserted into the valve chamber 21 (see FIG. 1) of the main body 1, it is screwed into the female screw portion 1c formed on the inner surface of the opening 1a of the main body 1. When the shoulder 33 is pressed downward by the cartridge presser 90 (see FIG. 2), the lower disk 5 is pressed.
0 is pressed against the upper surfaces of the attachments 24 and 26. 90
a is a male screw portion of the cartridge holder 90.

Further, in the above configuration, when the handle 7 is turned up and down and left and right with respect to the main body 1, the movable disk 4a of the movable valve body 4 slides on the fixed valve body 3, and the mixed water Discharge is performed.

On the other hand, when the operating handle 7 is turned to the left or right, the movable valve element 4 is rotated by the disk guide 5, and only the water valve hole 3b of the fixed valve element 3 is moved by the movable disk of the movable valve element 4. The hot water valve hole 3a is aligned with the long hole 60, and the hot water valve hole 3a is closed by the movable disk 4a, and only water flows into the internal flow path d.
Is discharged from a discharge pipe (not shown) through a hot / water mixed water discharge port.

Conversely, when the operating handle 7 is turned to the left or right, the movable valve element 4 is moved by the disc guide 5.
Rotated in the opposite direction to the above, the hot water valve hole 3a of the fixed valve body 3
Only the water is aligned with the elongated hole 60 of the movable disk 4a of the movable valve body 4, and the water valve hole 3b is closed by the movable disk 4a, and only the hot water flows into the internal flow passage d, and the mixed water valve hole 3c It is discharged from a discharge pipe (not shown) through a hot / water mixed water discharge port via a valve chamber 21 of the main body 1.

As described above, the operation handle 7
The amount of rotation of the movable disk 4a
By adjusting the respective alignment openings of the long hole 60 and the hot water valve hole 3a and the water valve hole 3b of the fixed valve body 3,
The supply amount of hot water and water is changed, the temperature of the mixed water is set appropriately, and the long hole 60 of the movable disk 4a and the fixed valve body 3 are rotated by rotating the operating handle 7 in the vertical direction (A direction). The flow rates of hot water and water are appropriately changed by adjusting the respective matching opening amounts while keeping the relative ratios of the matching opening degrees of the hot water valve hole 3a and the water valve hole 3b constant. Is done.

That is, the protrusion 8a is formed on the cylindrical body 8 detachable from the lever 6, while the disk guide 5
A recess 9 is formed on the upper surface of the sliding path R so as to have a sliding path R along the rotation direction of the lever 6. The convex section 8 a slides on the sliding path R, and the convex sections 8 a are formed on both sides of the sliding path R. Is provided with a water-discharge step 10 and a water-stop step 11 that are large enough to get on, so that when discharging water, the projection 8a that slides on the slide path R is provided.
Can be formed at the point in time when abuts against the water discharge step 10.

When water is stopped, the discharge amount decreases as the convex portion 8a slides on the slideway R and approaches the water stop step 11, and the convex portion before the fully closed state is formed. Since the water hammer prevention state is formed when the water stop 8a comes into contact with the water stopping step 11, the water hammer is avoided because it is not suddenly closed at once.

Furthermore, the above-mentioned operation of each handle can be always smoothly performed by sliding contact between the movable disk 4a made of ceramic material and the fixed valve body 3 made of resin material, and problems such as occurrence of ringing are eliminated. Needless to say.

[0038]

As explained above, according to the present invention,
On the other hand, a convex portion is formed on the cylindrical body detachable from the lever, and a concave portion is formed on the upper surface of the disk guide so as to have a sliding path along the rotation direction of the lever. As the water slides and the water discharge step and the water stop step are provided on both sides of the slide path so that the protrusions can climb up, the slide path slides when discharging water. The water saving state can be formed at the time when the projection comes into contact with the water discharging step.

When the water is stopped, the discharge amount decreases as the convex portion slides on the slideway and approaches the water stopping step, and the convex portion immediately before forming the fully closed state is reduced. Since the state of preventing water hammer is formed at the time of contact with the water stopping step, the water hammer is prevented from being suddenly closed at once, thereby preventing the occurrence of water hammer.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory diagram showing one embodiment of the present invention.

FIG. 2 is an exploded perspective view of the embodiment.

FIG. 3 is an exploded perspective view of a main part in the embodiment.

FIG. 4 is a diagram for explaining a click operation in the embodiment.

FIG. 5 is a diagram for explaining a click operation in the same manner.

FIG. 6 is a diagram for explaining a fully opened / fully closed state in the embodiment.

FIG. 7 is a view for explaining a state of preventing water hammer in the embodiment.

FIG. 8 is a diagram illustrating a state of saving water according to the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hot water mixer tap main body, 2 ... Cartridge, 2a ... Cartridge case body, 3 ... Fixed valve body, 4 ... Movable valve body, 5 ...
Disc guide, 5a: Upper surface of disc guide, 6: Lever, 7: Handle, 8: Cylindrical body, 8a: Convex portion, 9: Concavity, 10: Step for water discharge, 11: Step for water stop, R: Convex portion , A slideway of W, a water inlet, M: a discharge port of mixed hot and cold water, d: an internal flow path.

Claims (3)

(57) [Claims] 1. A hot water mixer comprising: a hot water inlet, a water inlet, and a hot / water mixed water discharge port; A movable valve body for adjusting the ratio is slidably mounted on the movable valve body in a watertight state, and the movable valve body is provided with a hot water valve hole of the fixed valve body, a hot water valve introduced through the water valve hole, and a mixed water valve. An internal flow path for circulating through the hole is formed, a disk guide is mounted on the movable valve body, and a lower end of a lever having an upper end protruding above an upper part of the hot / water mixer tap body is provided with the movable valve body. When the handle attached to the upper end of the lever is turned left and right with respect to the hot water mixer tap body, the movable valve element is rotated by the disc guide which turns together with the lever. , Hot water, or Hot / cold water flows into the internal flow path, and the water, hot water, or hot / cold mixed water is discharged through the hot / cold mixed water discharge port through the mixed water valve hole. When the lever is turned up and down with respect to the hot and cold water mixing tap main body, the movable valve body moves by the rotation of the lever, and the water, hot water, or hot and cold water mixture is discharged.
Switching the water stop state, the lever is pivotally supported at its intermediate portion on a pin shaft provided on the disc guide,
The upper surface of the disc guide and the click portion on the lever side corresponding to the upper surface are provided with a click mechanism for adjusting the turning operation of the lever when the handle is turned up and down. A cylindrical body having a convex portion and detachable with respect to the lever, a cylindrical guide for urging the cylindrical body against the upper surface of the disk guide by a spring, and the convex along the rotation direction of the lever. A recess formed on the upper surface of the disc guide so as to have a sliding path in which the portion can slide, and the lever, and the recess is formed by turning the handle up and down. After sliding on the slideway, it comes into contact with the handle, and the handle is turned up and down to form a fully open / closed state when the convex portion climbs up. Both Single lever of the hot and cold water mixing valve, characterized in that it comprises respectively. 2. A water-saving state is formed when water is discharged by a vertical turning operation of a handle when the convex portion sliding on the slide path comes into contact with the water discharging step.
A single-lever hot and cold water mixing tap according to 1. 3. A water hammer prevention state is formed at the time when the convex portion sliding on the slide path abuts on the water stopping step when water is stopped by a vertical turning operation of a handle. Item 1. A single-lever hot-water mixer tap according to Item 1.