JPH0442610Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention A-1. Field of Industrial Application The present invention relates to a valve body in a mixing faucet for mixing different fluids such as water and hot water.

A-2 Prior art The 10th conventional mixing faucet for mixing different types of fluids
A hot water mixing faucet as shown in FIGS. 12 to 12 is disclosed in, for example, Japanese Utility Model Application Publication No. 173380/1983.

The hot water mixing faucet has a water inlet 2 and a hot water inlet opened side by side in the left-right direction X on a valve seat receiver 1, and a water inlet hole 4 and a hot water inlet hole 5 on both the inlets 2 and 3. The lower end of an operating shaft 8 with a handle, on which valve bodies 6 with openings arranged in parallel in the left-right direction X are placed so as to be slidable in the left-right direction A pinion 9 is formed on the valve body 6, and the pinion 9 is meshed with a rack 10 formed on the inner surface of the valve body 6, and the operating shaft 8 is rotated A in a plane, so that the valve body 6 is rotated through the pinion 9 and the rack 10. By moving in the left-right direction
1, the valve body 6 is moved in the longitudinal direction Y. Then, by moving the valve body 6 in the left-right direction That is, the temperature of the hot water is adjusted, and by moving the valve body 6 back and forth, the overall discharge amount of the hot water is adjusted while maintaining the mixing ratio of the hot water.

The valve body 6 has a main body 6a, a pinion 10, and an engagement portion 11 integrally formed of a synthetic resin material. A metal plate 6b is attached to the lower surface of the main body 6a, and front and rear pieces 6c, 6c and left and right pieces 6d,
6d is bent and fixed.

A-3 Problems to be Solved by the Present Invention In the above-mentioned mixing faucets, the operating angle of the operating handle should be small and the amount of movement of the valve body should be large, considering the operability of the operating handle. It is better to increase the rack shape of the valve body.

However, since the diameters of both inlet holes 4 and 5 of the valve body are increased in order to increase the discharge amount of hot water, the shape of the rack is restricted and the rack cannot be made larger. Therefore, the cross-sectional area of the teeth of the rack becomes small and a high load is placed on the rack. Therefore, if the rack is made of resin as in the prior art, the rack will be damaged due to its low material strength, and the valve body will not operate when the handle is operated, causing the problem that it will no longer function as a mixing faucet. Therefore, in the present invention, the main part of the valve body is made of synthetic resin and the rack part is made of metal to prevent damage to the rack part and solve the above problems. The formed main body part and the rack part are strongly and reliably connected, and the main body part and the rack part, which are made of materials with different coefficients of thermal expansion and water absorption expansion, are designed to prevent water leakage even when deformed due to expansion or contraction. The purpose is to prevent valve function from being impaired.

B. Structure of the invention B-1 Means for solving the problems In order to solve the above-mentioned problems, the present invention has developed the main body part 13 constituting the valve body by using a synthetic resin material that is curved in the front and rear directions. A fitting recess 16 is formed in the center of the main body 13, and communication holes 17 and 18 are formed in the left and right parts of the main body 13, and a fitting recess 16 is formed in the center thereof. A shaped rack member 14 is formed of a metal material, and a pinion fitting groove 25 is formed in the center of the rack member 14, and a rack 23 is integrated in the front part of the rack member 14, and an engaging part 24 is integrated in the rear part thereof. The heights of the rack 23 and the engaging part 24 are set so that they protrude upward from the front and rear ends of the main body part 13 when they are fitted into the fitting recess 16, and the heights of the rack 23 and the engaging part 24 are set such that they protrude upward from the front and rear ends of the main body part 13 when they are fitted into the fitting recess 16. Fitting recess 1
The inner bottom surface of 6 is formed so that a gap D is created between the front and rear parts when these are fitted together, and a metal plate 15 is provided to fit the bottom surface of the main body part 13. At the front and rear of the plate 15, there are longitudinal movement regulating pieces 31, 31 that engage with the front and rear end surfaces of the main body part 13, and a rack 2 of the rack member 14.
3 and the upper surface of the engaging part 24, and left and right regulating pieces 33 and 34, which engage with the left and right ends of the main body part 13, are integrally formed at the left and right ends, respectively. It is something.

RO-3 EMBODIMENT Next, a first embodiment of the present invention shown in FIGS. 1 to 4 will be described.

Reference numeral 12 is formed by assembling three parts: a valve body 13, a rack member 14, and a plate 15 for performing the same function as the valve body 6 of the conventional structure. The main body portion 13 is formed of a synthetic resin material into a curved plate shape. A fitting recess 16 for the rack member 14 is formed in the center of the surface of the main body 13;
In addition, communication holes 17 and 18 are formed on both left and right sides so as to penetrate in the front and back directions.

The fitting recess 16 has a horizontal surface 19 at its center, and
The front and rear sides thereof are formed as upwardly inclined surfaces 20, 20, and the outer ends thereof are formed as vertical surfaces 21, 21.
Reference numeral 22 denotes a convex portion that prevents the rack member 14 from being incorrectly fitted in its front-rear posture. The rack member 14 is made of a metal material and has a boat-shaped cross section in the front-rear direction, and has a rack 23 on its front inner surface.
However, an engaging member 24 is integrally formed on the rear side, and a pinion fitting groove 25 similar to the conventional one is further formed in the intermediate portion. The left-right width and the front-rear width of the rack member 14 are set so that it fits close to the inner circumferential wall surface of the fitting recess 16. 26 is a recess that fits into the projection 22. The bottom shape of the pinion fitting groove 25 is such that the center part thereof is a planar lowest part 25a, and the front and back thereof are stepped parts 25b, 25 whose upper surfaces are planar.
b. Also, the rack member 1
The back surface of 4 has a horizontal surface 27 at its center that rests on the horizontal surface 19 at the center of the fitting recess 16 of the main body part 13 in the fitted state shown in FIG. It has an inclined surface 28 that creates a gap D between the front and rear inclined surfaces 20 of the fitting recess 16, and further has a vertical surface 29 on the outside that fits into the vertical surface 21 of the fitting recess 16. ing. Furthermore, the rack 2 in the rack member 14
An inclined chamfered portion 30 is formed at the upper portion of one side end of the engaging portion 3 and the engaging portion 24 . The plate 15 is made of a metal plate and is formed to cover the entire bottom surface of the main body portion 13 and to follow the curved surface thereof. Further, back and forth movement regulating pieces 31, 31 are bent at the front and rear ends thereof and come into contact with the front and rear end surfaces 13a of the main body part 13, and furthermore, at the upper ends of the pieces 31, 31, the rack member 14 fitted into the main body part 13 is bent. Presser piece 3 that engages with the top surface
2 and 32 are bent inward.

The height from the inner bottom surface of the plate 15 to the lower surface of the presser piece 32 is as shown in FIG.
The height H to the outer bottom surface of the plate 15 is set somewhat lower than the height H to the outer bottom surface of the main body 13 as shown in FIG.
When inserted, the holding piece 32 is pushed upward somewhat and comes into contact with the upper surface of the rack member 14, so that the downward return elastic force of the holding piece 32 presses the rack member 14 toward the main body 13. It's getting old. Reference numerals 33 and 34 indicate horizontal movement regulating pieces protruding from the left and right ends of the plate 15. Before the insertion operation, one piece 33 is extended horizontally to form a bending V-groove 35 at its base. The other piece 34 is erected.

Reference numerals 36 and 37 are water inflow holes and hot water inflow holes formed in the plate 15, which are similar to the water flow hole 1 of the main body portion 13.
7 and the opening position of the hot water flow hole 18. A sealing surface 38, which is the outer bottom surface of the plate 31, is coated with resin to allow the valve body to slide smoothly.

Next, the assembly of the valve body will be explained.

First, insert the rack member 14 into the fitting recess 1 of the main body 13.
6, using the convex portion 22 and the fitting recess 26 as marks to align the posture and fit the device. This mark can prevent the rack member 14 from being inserted incorrectly.

Next, the plate 15 is inserted from the piece 33 side along the bottom surface of the main body part 13, and the longitudinal movement regulating pieces 31, 31 are inserted into the front and rear end surfaces 13a, 1 of the main body part 13.
3a, and the holding pieces 32, 32 are engaged with the rack member 1.
The rack 23 of No. 4 is engaged with the upper surface of the engaging portion 24. At this time, the presser pieces 32, 32 are attached to the chamfered portion 30.
It is well guided without being caught by the handle, and is elastically deformed somewhat upward to engage. After inserting the plate 15 until the piece 34 comes into contact with the end surface of the main body part 13, the piece 33 is bent and raised. This piece 33
When the piece 33 is bent and raised, the piece 33 is bent to a small radius by the V-groove 35, so that peeling of the coating resin near the bent portion is prevented.

By assembling as above, the easy member 1
4 is prevented from moving in the front, rear, right and left directions by the peripheral wall of the fitting recessed member 16. Also, both presser pieces 32, 3
The rack member 14 is pressed by the elastic pressing force No. 2, and the rack member 14 is prevented from wobbling in the front and back directions, and at the same time, the contact surface between the outer bottom surface of the rack member 14 and the inner bottom surface of the fitting recess of the main body portion 13 is The contact friction force becomes stronger, and rattling of the rack member 14 in the front-rear direction and left-right direction is also prevented.

Furthermore, since the presser piece 32 has elasticity,
Insertion and assembly is possible even if there are variations in the dimensions of the members, and the rack member 14 can be held without looseness even when the main body portion 13 expands or contracts. Furthermore, during use, when the valve body is immersed in a liquid such as hot water, the main body part 13 made of resin swells and expands in volume. The sealing surface of the plate 15 is prevented from being deformed. That is, if the gap D does not exist, the expansion of the main body portion 13 will force the front and rear portions of the plate 15 (the left and right portions in FIG. 3) downwardly, deforming the sealing surface on the lower surface, and causing a seal failure. Water leaks, but
This can be prevented by providing the gap D. Furthermore, in order to fit the rack member 14 into the fitting recess 16 as described above, a certain amount of clearance is required between them, but as the main body portion 13 expands as described above during use, the clearance is reduced. This eliminates the rattling of the rack member 14.

5 to 7 show a second embodiment of the present invention, in which the pinion contact surface of the engaging portion 24 of the rack member 14 is made of synthetic resin. That is, a bushing fitting recess 24a is formed in the engaging portion 24 and is open on the upper and inner sides, and a synthetic resin bushing 24b is fitted into the recess 24a. In addition, engagement grooves 24c are provided at the left and right ends of the bushing fitting recess 24a and the bushing 24b, respectively.
and an engaging protrusion 24d are formed, and these fittings prevent the bush 24b from coming off inward. In this device, the rear surface of the metal pinion meshed with the rack 23 slides in contact with the synthetic resin bush 24b, so the sliding wear of this contact portion is less than in the case of mutual contact between metals. Therefore, the looseness of the valve body due to wear is reduced, which prevents water leakage and deterioration of the feeling when operating the handle.

The operating shaft portion is formed as shown in FIGS. 8 and 9. A sphere 40 is press-fitted into the operating shaft 39, and a pinion mounting portion 41 at the bottom thereof is formed into a cylindrical shape.The inner surface of the pinion mounting portion 41 is formed into a tapered surface 42 that widens downward, An axial groove 43 is formed in the attachment portion 41 . Further, in the center of the pinion 44, a mounting hole 45 with a tapered surface that expands downward is formed, and a projection 46 that fits into the split groove 43 is formed in the axial direction. Reference numeral 47 denotes a mounting screw, and a tapered surface 48 having an angle that opens the tapered surface 42 is formed on the head thereof. pinion 44
To attach the pinion 44, first, the pinion 44 is positioned with respect to the outer periphery of the pinion attachment part 41 so that the protrusion 46 matches the split groove 43, and then the pinion 44 is inserted. Next, the mounting screw 47 is screwed into the female threaded portion 49 of the shaft portion. As a result, the tapered surface 48 formed on the head part opens the pinion mounting part 41, and the pinion mounting part 41 is bent and press-contacted to the tapered surface formed in the mounting hole 45 of the pinion 44. Therefore, the pinion 44 is connected to the operating shaft 39.
The pinion 44 is integrally connected to the pinion 44 without coming off or coming loose, and the torque from the operating shaft 39 is reliably transmitted to the pinion 44.

C. Effects of the invention As described above, in the present invention, the rack part is formed of a metal material, so the rack has higher strength and less damage than conventional resin, so the rack can be made smaller and the diameter of the inflow hole can be reduced. By increasing the size, the discharge amount can be increased, and the durability of the mixing faucet can be improved. Moreover, if the main body part of the valve body is made of synthetic resin and the rack part is made of metal, and they are formed separately,
Water leakage due to rattling due to assembly and deformation of dissimilar materials is a problem, but according to the present invention, the aforementioned rattling and water leakage can be prevented from the following points. That is, the rack member 14 is fitted into the fitting recess 16 formed in the main body portion 13, thereby restricting its movement in the front-back and left-right directions. The rack member 14 also has a plate 15.
Since it is elastically pressed by the holding piece 32 integrally formed with the main body 13, the rack member 14 is prevented from coming off upward, and the rack member 14 can be pressed and held against the main body 13 even if the parts vary, expand, or contract. , to prevent water leakage due to rattling. Furthermore, since the gap D is formed between the rack member 14 and the main body part 13, when the main body part 13 made of synthetic resin expands, the expansion is absorbed by the gap D, and the plate 15 forming the sealing surface is not deformed. . Therefore, water leakage due to deformation of the sealing surface can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of each component of a valve body showing an embodiment of the present invention, Fig. 2 is an assembled plan view of the valve body, and Fig. 3
The figure is a sectional view of the same side, FIG. 4 is a rear view with the right half cut away, FIG. 5 is a plan view showing another embodiment of the present invention, FIG. A perspective view of the rack part, FIG. 8 is a partially cutaway view of the operating shaft part,
9 is a bottom view of the same, FIG. 10 is a perspective view of the conventional structure, FIG. 11 is a side sectional view of the conventional valve body, and FIG. 12 is a front sectional view of the same. 12... Valve body, 13... Main body, 14... Rack member, 15... Plate, 16... Fitting recess,
17, 18... Distribution hole, 23... Rack, 24...
...Engaging portion, 25... Pinion fitting groove, 31... Back-and-forth movement regulating piece, 32... Holding piece, 33, 34... Lateral movement regulating piece.

Claims (1)

[Scope of utility model registration request] The main body part 13 constituting the valve body is formed of a synthetic resin material into a plate shape curved in the front-rear direction, and a fitting recess 16 whose surface side is open is formed in the center thereof, and the left and right parts of the main body part 13 are There are circulation holes 17 and 18.
A rack member 14 having a shape to fit into the fitting recess 16 is formed of a metal material, and a pinion fitting groove 25 is formed in the center of the rack member 14, and a pinion fitting groove 25 is formed in the front part of the rack member 14. A rack 23 is integrally formed at the rear part, and an engaging part 24 is integrally formed at the rear part.
The height of the engaging part 24 is set so that it protrudes upward from the front and rear ends of the main body part 13 when it is fitted into the fitting recess 16, and furthermore, the height of the engaging part 24 is set so that it protrudes upward from the front and rear ends of the main body part 13 when it is fitted into the fitting recess 16. The bottom surface is formed so that a gap D is created between the front and rear parts when these are fitted together, and a metal plate 15 is provided to fit the bottom surface of the main body part 13.
5, front and rear movement regulating pieces 31, 31 that engage with the front and rear end surfaces of the main body portion 13, and presser pieces 32 that elastically press the upper surfaces of the rack 23 and the engaging portion 24 of the rack member 14 are provided. A valve body for a mixing faucet characterized in that left and right movement regulating pieces 33 and 34 that engage with the right and left ends of the main body portion 13 are integrally formed at the ends thereof, respectively.