JPH1119U - Mixing valve with valve plate - Google Patents

Abstract

(57) [Problem] To provide a mixing valve which can be easily operated. A valve plate fixedly mounted to a support surface, sealing means positioned between the fixed plate and the support surface, contacting the fixed valve plate and with respect to the fixed valve plate. A movable valve plate operatively connected to control means for moving the valve plate; and a fixed valve plate pressed against the support valve surface, thereby placing a seal between the fixed plate and the support surface. Means for compressing the means irrespective of any small compression force applied between the fixed plate and the movable plate.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 According to the present invention, there is provided a faucet body, a cartridge assembly inserted into the faucet body, a control mechanism, a support valve seat for fixing a valve plate made of hard material, and a valve seat disposed between the fixed valve plate and the support valve seat. Handle mixing valves including fixed seals and movable valve plates coupled to a control mechanism for relative sliding operation to adjust the flow rate and mixing ratio.

[0002]

[Prior art and its problems]

 In order to achieve effective closure, the fixed valve element, commonly referred to as the fixed valve plate, and the movable valve plate of the mixing valve must be pushed together by a greater compressive force than the force exerted by the pressure of the flowing water. . Otherwise, water pressure would separate the movable valve plates from the fixed valve elements and prevent them from being closed. And similarly, the compression force should be used with the fixed valve plate to ensure the proper functioning of the seal or to compress the seal in order to prevent its own ejection or its deformation in the event of excessive pressure. Must be added during its own support surface.

[0003] In many cases, the minimum compressive force required to compress the seal and hold it firmly in place is the amount of pressure required to operatively contact and hold the fixed and movable valve plates. Must be higher than the minimum compression force. In known cartridge valve constructions, the fixed valve plate is simply located on the support valve seat at the bottom of the replaceable cartridge inside the faucet body, and the compressive force is applied to the movable valve plate and the movable valve plate. Between the supporting valve seat and the supporting valve seat which pushes the supporting valve seat back or back.

As a result, the applied compression force must be at least equal to or greater than the higher of the two minimum compression forces required for the specified purpose. In other words, the compressive force applied is equal to the compressive force required to compress the seal and hold it securely in place. Thus, the compression force is unnecessarily high for the purpose of keeping the movable valve plate in contact with the fixed valve plate. Due to such excessively high forces applied between the moving and stationary plates, the faucet becomes more difficult to operate and introduces unnecessary mechanical stress on the parts. Cartridge valves whose bottoms are hydraulically biased in order to generate a compressive force between the fixed and movable valve plates are disadvantaged, inter alia, by the excessively high compressive forces described above.

[0005]

[Means for Solving the Problems]

 According to the present invention, the mixing valve is provided with a valve seat having a compression force greater than the compression force between the fixed valve element and the movable valve plate disposed between the fixed valve element and its own supporting valve seat. It is configured so that it can be added to In accordance with the present invention, the arrangement consists of an attachment mechanism connecting the fixed valve element to its own supporting valve seat, a seal compressed between them, and these parts being compressed. Achieved by holding down.

[0006] With this arrangement, the compression of the seal under the fixed valve element is determined by the resilient and geometric properties of the seal itself, the attachment mechanism and the connection. The compressive force is continuously applied to the accessory mechanism, the fixed valve element, the supporting valve seat and the seal, irrespective of the external force applied to the fixed valve element and the supporting element.

[0007] Any externally applied compressive force can then have a magnitude exclusively determined to create the required operative sealing contact between the fixed valve element and the movable valve plate. The compressive force between the fixed valve element and the movable valve plate only takes into account the need for contact between the fixed valve element and the movable plate, and takes into account the fixing and compression of the seal under the fixed valve element Can be selected without having to.

[0008] The compressive force applied between the plates is generated by an elastic element such as a spring, or exerts a water pressure on the bottom of the support valve seat acting as a piston to push the fixed plate against the movable plate. Can be generated by The compressive force applied between the plates is greatly reduced, thus providing the most easily operated mixing valve tap without the excessive frictional forces generally present between the plates.

[0009]

【Example】

 The faucet shown in FIG. 1 includes a body 1 having two inlet pipes 7 and 8 connected thereto for hot and cold water passages. The main body 1 has an inner chamber 2 that houses a cartridge and forms an annular peripheral portion 2a communicating with an outlet port 2b. On the opposite side of the pipes 7 and 8, the chamber 2 is closed by a lid 5 screwed to the body 1. A seal 6 is interposed to prevent leakage.

The cartridge preferably comprises a lower member 10 made of plastic and capable of axial movement in the chamber 2 of the tap body 1. The lower member 10 has a bottom portion 9 having two dangling male connections 11 and 12 with seals 11b and 12b provided on the faucet body 1 and sealed to the valve seats 3 and 4, respectively. The valve seats 3 and 4 have openings 3a and 4a therethrough. The bottom part 9 of the cover 10 has passages 11a and 12a through respective connections 11 and 12 communicating with the openings 3a and 4a, and forms a supporting valve seat for the fixed valve plate 18 of the faucet. Extending upward through the mating surface 9a.

The passages 11 a and 12 a are surrounded by seals 16 and 17. In this embodiment, the seals 16 and 17 comprise two separate annular portions housed in corresponding annular grooves recessed in the bottom portion 9 of the cover 10.

However, the seals 16 and 17 can be replaced by a single part having a more complex form. The seals 16 and 17 function to seal between the support surface 9a and the fixing plate 18. Plate 18 has two openings 18a and 18b aligned with passages 11a and 12a for hot and cold water to pass through.

The movable valve plate 19 abuts the fixed valve plate 18 and is attached to a control mechanism for moving the valve plate 19. In particular, the movable valve plate 19 is mounted on a control slide 20 surrounded by a control ring 21 rotatably mounted on the cover 10. The slide 20 abuts against the half bearing 22 fixed at the opening of the cover 10 on the side opposite to the plate 19. The half bearing 22 is adjacent to the lid 5 that closes the faucet body 2. Another half bearing 23 is housed in the lid 5. An articulating ball 25 with a seal 24 is placed intermediate between the half bearings 22 and 23.

The arm 26 extends outward from the ball 25. A cap 28 having an operation lever 29 is connected to the arm 26. The flat key 27 hangs down from a ball 25 contained in a corresponding valve seat of the control slide 20. The control mechanism adjusts the fluid flow from the pipes 7 and 8 as desired by the various rotations and tilts of the lever 29, at which the mixing flow mixes at the annular chamber periphery 2a exiting the outlet 2b. The control slide 20 and the movable plate 19 attached thereto are shifted by both translation and rotation.

In the space between the bottom part 9 of the cartridge-shaped cover 10 and the bottom of the faucet body 1, a spring 30 is drilled for the passage of the coupling parts 11 and 12 and the bottom of the body 1 and the cartridge Arranged including an arched disk to provide repulsion between the bottom portions 9 of the shaped covers 10. Other spring arrangements are possible, such as an elastomeric ring located below the connections 11 and 12 or between the bottom 9 and the body 1.

The fixed valve plate 18 is not merely located on a support element, including the bottom 9 of the cartridge cover 10, as is known in the prior art, but is arranged to hold the seals 16 and 17 under compression. Fixed to it by the attached mechanism.

In particular, in the form represented in FIG. 1, the fixing plate 18 has a concave central valve whose threaded mandrel is adapted to receive a screw head 31 screwed to the bottom 9 of the cartridge cover 10. With a seat. The different parts are sized differently, such as when the screws 31 are attached and the fixing plate 18 is held in firm contact with the bottom 9. The seals 16 and 17 ensure a seal between the bottom 9 and the fixed plate 18 and maintain the seals 16 and 17 in the valve seat for all movements that tend to blow or deform them. It is compressed by an appropriate compression force. This compression force can be high, but is retained between the parts 9, 16, 17, 18, 31 without affecting the other faucet components.

Regardless of the water pressure, the spring 30 exerts a force on the bottom of the cartridge cover 10 that is oriented towards the lid 5. This force is transmitted from the bottom part 9 of the cover 10 to the fixed plate 18 and from the latter to the movable plate 19, slide 20, half bearing 22 and lid 5. This force holds the cartridge bottom 10 in contact with the fixed plate 18 (through the seals 16 and 17 that will be compressed by this force) and the plates 18 and 19 also hold each other in contact with each other, Provides a sealed contact. This force must be sufficient to ensure normal operation of the tap at low pressure.

A resilient spring 30 that operates between the faucet body and the cartridge can be configured to provide the minimum required compressive force for the sealing contact between the plates 18 and 19. In many instances, the spring 30 can be eliminated.

The water pressure delivered by the pipes 7 and 8 acts on the connections 11 and 12 like pistons by pushing them towards the plates 18 and 19, and by the proper size of the various parts, As already discussed, it increases the compressive force between the plates 18 and 19 for effective operating pressure by generating a force transmitted to the lid 5 and ensuring correct behavior.

The compression force applied to the seals 16 and 17 does not affect any other faucet parts, so it can be chosen higher than usual. Thus, a greater degree of freedom is provided in planning these seals with larger components or more elastic forces than are normally accepted for the needs. Screws 31 allow disassembly of the fixation plate from the cartridge, if necessary, but in many cases such disassembly is not required. Because the seals 16 and 17 are compressed independently of the spring 30, the spring 30 is sufficient to compress the seals 16 and 17, and in many cases, its adhesion is under unnecessarily high pressure. It is no longer necessary to provide a very high, relatively high compressive force due to the sealing contact between the plates 18 and 19 that occurs. This disadvantage of the previous valve is thereby eliminated.

Referring to FIG. 2, a fixed plate 18 having a central valve seat 15 can be held by a projection 13 integrally formed with the cartridge bottom 9 and an ultrasonic wave to form an enlarged head 13a. The plate 18 can be heated or compressed by the use of a plate, while during such an operation, the plate 18 is lowered against the bottom 9 by a punch that provides the necessary force to compress the seals 16 and 17 during assembly. Has been pushed into. The enlarged head 13a holds the plate 18 and provides the compressive force transmitted to the seals 16 and 17.

Other equipment, such as rivets, venting elements, strong elastic release teeth, etc., are also envisioned for cooperating with the central valve seat 15 of the fixation plate 18.

In FIG. 3, the securing plate 18c also has a notch at the periphery of the plate rather than at its center, by compressing the seals 16 and 17, and as used in previous valve types. By being attached, it is held against the bottom 9 of the cartridge cover. The plate 18c according to FIG. 3 has a peripheral lower valve seat 14 with which several projections 32 of the cartridge cover 10 are engaged and which provides a compressive force on the seals 16 and 17. The projections 32 are parts of the cover that contain ferroelastic release teeth or have been deformed by heat, ultrasound or some other method, while during such operation the plate 18c is Being pressed by a punch to compress.

As shown in FIG. 4, the holding of the fixing plate 18 c against the bottom 9 around the periphery is also provided by a ring 33 introduced into the lower valve seat 14 of the disc and integral with the cartridge-shaped cover. This can be achieved with additional tools. The ring is made of plastic and is fixed to the cover 10 by soldering or brazing, or it can be made of a resilient ring that is fixed by expansion (which can be metal in this case). The fixing plate 18c may also be provided by a combination of peripheral or centrally located accessories, ie combining the embodiment as shown in FIGS. 3 and 4 with the embodiment as in FIGS. Can be held against the bottom 9.

The seals 11b and 12b located intermediate between the support element and the body bottom preferably do not cause an axial thrust greater than the minimum compressive force required for a sealing contact between the plates. . Radial seals 11b and 12b, similar to those shown in FIG. 1, are seals that provide only moderate axial thrust, or that have axial thrust (or a portion thereof) between the faucet plates. A more complex seal that is somewhat compensated for without thrust being transmitted.

Of course, various modifications can be used in addition to those already described. For example, the fixation of the plate 18 can be performed by two screws (such as 31) arranged along the diameter of the disk, or by three screws arranged like a triangle, or the like.

Modifications and variations of the present invention are possible without departing from the scope and spirit of the appended claims.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a mixing valve including a cartridge according to a first embodiment of the present invention.

FIG. 2 is a side cross-sectional view of the bottom cover assembly for a faucet cartridge including a fixed valve plate and its attachments according to some alternative embodiments of the present invention.

FIG. 3 is a side cross-sectional view of a bottom cover assembly for a faucet cartridge including a fixed valve plate and its attachments according to some alternative embodiments of the invention.

FIG. 4 is a side cross-sectional view of a bottom cover assembly for a faucet cartridge including a fixed valve plate and its attachments according to some alternative embodiments of the invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Faucet body 2 Cartridge accommodation room 5 Lid

Claims (3)

[Utility model registration claims] A faucet main body having a cartridge accommodating member; a cartridge accommodated in the cartridge accommodating chamber, the cartridge having a fluid accommodating chamber and a support surface facing the fluid accommodating chamber; and a fixed valve plate attached to the supporting surface. A sealing means disposed between the fixed valve plate and the support surface; and a movable operatively connected to control means for contacting the fixed valve plate and being movable relative to the fixed valve plate. A valve plate, pressing the fixed valve plate against the support valve surface, thereby sealing means disposed between the fixed valve plate and the support surface between the fixed valve plate and the movable valve plate; Compression means for compressing regardless of the small compression force applied to said plate, said compression means including an accessory cooperating with a substantially peripheral portion of said fixed plate. 2. The attachment device extends from the support surface,
3. The mixing valve of claim 2 including an integral projection engaging said fixed valve plate. 3. The mixing valve according to claim 3, wherein said projections include ferroelastic release teeth.