JP2012072558A - Control lever type combination faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control lever of which joint interface strength between a resin part and a metal part is enhanced.SOLUTION: A control lever 4 for controlling a movable valve body driving axis 3 of a hot and cold water mixing valve unit 2 to change a mixing ratio and discharge amounts of hot and cold water is formed of an operational resin part 5 made of a synthetic resin integrally bonded to a metal part 6 which is connected and fixed to the movable valve body driving axis 3. The metal part 6 has a recess on an outside surface to which the resin part 5 is joined. The metal and the resin are joined in the recess to constitute a lever type combination faucet 1.

Description

  The present invention relates to an operating lever type mixing faucet, and more particularly to an operating lever type mixing faucet that changes the mixing ratio of hot water and water supplied by operating a single operating lever and also changes the discharge water flow rate. It is.

  The operation lever used for the mixing faucet on the sink is inserted into the movable valve body drive shaft that protrudes from the hot water mixing valve unit and fixed to discharge water. Water stop operation can be performed.

  Conventionally, as this type of operation lever, for example, one used for a mixing faucet of Patent Document 1 is known. A conventional operation lever includes a base member connected to an upper part of a movable valve body drive shaft that protrudes from a hot and cold water mixing valve unit, and a flat grip member that is attached to the base member so as to protrude sideways. The base member has a cap shape made of metal or synthetic resin, and has a substantially tapered cylindrical peripheral wall portion, a top wall portion covering the upper opening of the peripheral wall portion, and a lower portion from the center of the lower surface of the top wall portion. A vertically extending shaft portion is provided integrally. The vertical shaft portion has a bottomed hole opened at the lower end. Then, a cylindrical metal part having a flange at the lower end is provided in the bottomed hole, and the base member is fixed to the upper part of the movable valve body drive shaft by fitting the upper part of the movable valve body drive shaft into the metal part. Has been.

JP 2007-56916 A

  As shown in FIG. 8, a conventional operation lever type mixing faucet disclosed in Patent Document 1 includes a hot and cold water mixing valve unit 2 that changes the mixing ratio of hot water and water and the amount of discharged water, and the hot and cold water mixing valve unit 2. And an operation lever 4 for operating the movable valve element drive shaft 3. In the operation lever 4, a resin portion 5 made of synthetic resin and a metal portion 6 connected and fixed to the movable valve body drive shaft 3 are joined and integrated by insert molding. However, since the resin and the metal are not completely bonded, when a strong force is applied to the operation lever 4 in the vertical direction A, for example, the bonding interface 8 between the resin and the metal is peeled off at the vertical shaft portion 9. As a result, the metal part 6 is likely to be detached from the resin part 5, and there is a possibility that the operation of the mixing faucet cannot be performed.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an operation lever type mixing faucet capable of increasing the bonding interface strength between the resin portion and the metal portion constituting the operation lever. Is to provide.

  In order to solve the above-described problems, the present invention includes a hot and cold water mixing valve unit that changes the mixing ratio of hot water and water and the amount of discharged water, and an operation lever that operates a movable valve body drive shaft of the hot and cold water mixing valve unit. The operation lever type mixing faucet, wherein the operation lever has a resin portion made of an operable synthetic resin and a metal portion connected and fixed to the movable valve body drive shaft, joined and integrated, A concave portion is provided on the outer surface of the metal portion to be joined to the resin portion, and the metal and the resin are combined in the concave portion.

  Moreover, it is preferable that the said recessed part is a through-hole penetrated toward the inner surface fitted with the said movable valve body drive shaft from the outer surface of the said metal part.

  Moreover, it is preferable that the said recessed part is a bottomed groove-shaped recess which does not penetrate the said metal part.

  Further, it is preferable that a protruding portion that protrudes outward from the recessed portion and bites into the resin portion is provided separately from the recessed portion on the outer surface of the metal portion.

  Further, the metal part is formed in a cap shape, the convex part is projected from the outer side surface on the head side of the metal part, and the concave part is provided on the outer side of the opening part side than the convex part. Is preferred.

  The operation lever type mixed faucet of the present invention can increase the bonding interface strength between the resin portion and the metal portion constituting the operation lever.

It is sectional drawing of the operation lever vicinity of the mixing faucet used for one Embodiment of this invention. (A) is sectional drawing of an operation lever same as the above, (b) is a perspective view of a metal part, (c) is a side view of a metal part. (A) is sectional drawing of the operation lever of other embodiment, (b) is a perspective view of a metal part, (c) is a side view of a metal part. (A) is a perspective view of the metal part of other embodiment, (b) is a side view of a metal part. (A) is sectional drawing of the operation lever of other embodiment, (b) is a perspective view of a metal part, (c) is a side view of a metal part. (A) is sectional drawing of the operation lever of other embodiment, (b) is a perspective view of a metal part, (c) is a side view of a metal part. (A) is sectional drawing of the operation lever of other embodiment, (b) is a perspective view of a metal part, (c) is a side view of a metal part. It is sectional drawing explaining the operation lever of a prior art example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view of the main part of the operation lever type mixing faucet 1.

  The operation lever type mixing faucet 1 includes a hot and cold water mixing valve unit 2, an operation lever 4, and a water discharge head (not shown).

  Although not shown, the hot and cold water mixing valve unit 2 is incorporated in the cartridge so that the fixed valve body and the movable valve body overlap each other. Then, by tilting the operating lever 4 in a direction orthogonal to the axis M of the movable valve element drive shaft 3 (in this embodiment, the vertical direction A), the movable valve element slides back and forth on the fixed valve element and stops. Water, water discharge and water discharge are adjusted. Further, by rotating the operation lever 4 about the axis M, the movable valve body slides on the fixed valve body in the circumferential direction, and the mixing ratio of hot water and water, that is, the water discharge temperature is adjusted. Of course, this is merely an example, and the present invention is widely applied to hot water and water mixing valve units 2 that change the mixing ratio of hot water and water and the amount of discharged water.

  As shown in FIG. 2A, the operation lever 4 includes a resin portion 5 made of synthetic resin that can be operated and a metal portion 6 that is connected and fixed to the movable valve body drive shaft 3. .

  One end of the resin in the longitudinal direction is an operation portion 5b operated by a user, and the other end is a connection portion 5a. The connecting portion 5 a connects the operation portion 5 b and the movable valve body drive shaft 3 and transmits the operation of the operation portion 5 b in the front-rear direction and the left-right direction to the movable valve body drive shaft 3.

  On the lower surface side of the connecting part 5a, a vertical shaft part 9 surrounded by tapered cylindrical peripheral wall parts 5c, 5d is projected. A bottomed hole that opens toward the lower end is formed inside the vertical shaft portion 9. The peripheral wall portions 5c and 5d and the vertical shaft portion 9 are made of synthetic resin, like the connecting portion 5a.

  A metal part 6 made of metal is integrally provided in the bottomed hole of the vertical shaft part 9 by insert molding. The metal portion 6 is formed in a cap shape having a bottomed hole-shaped shaft insertion portion 15 opened at the lower end, and the upper portion of the movable valve element drive shaft 3 is inserted and fixed to the shaft insertion portion 15. Yes.

  As shown in FIGS. 2B and 2C, the outer surface of the metal portion 6 of this example is formed in a cubic shape. The outer surface 6a of the metal portion 6 is provided with a recess 7 into which resin enters. The concave portion 7 includes a through hole 7a that penetrates from the outer side surface 6a of the metal portion to the inner side surface 6b. Here, the outer surface 6a is a joint surface with the resin portion 5 constituting the vertical shaft portion 9, and the inner surface 6b is a fitting surface with the movable valve element drive shaft 3 (see FIG. 1). The metal part 6 is insert-molded into the resin part 5 so that the resin enters the through hole 7a of the metal part 6 so that the metal and the resin are bonded in the through hole 7a. The number of through holes 7a is not limited to one, and two or more may be provided.

  Therefore, by inserting the metal portion 6 into the resin portion 5 of the operation lever 4, the operation lever 4 with the metal portion 6 can be manufactured by a single resin molding. And since the through-hole 7a which penetrates the metal part 6 is formed in the outer side surface 6a of the metal part 6, and resin is penetrate | invaded into the through-hole 7a, resin penetrates the metal part 6 and a movable valve body drive shaft To reach 3. Thereby, the binding force between the metal and the resin is increased, and the holding force between the metal and the resin is strengthened. As a result, the bonding interface strength between the resin and the metal constituting the operation lever is increased, the metal part 6 is less likely to be detached from the resin part 5, and the operability of the mixed water faucet can be maintained high over a long period of time.

  In this example, the through hole 7a is provided on the outer surface 6a on one side (right side in FIG. 1) of the metal part 6, but the through hole 7a is provided on the outer surface 6a on the other side (left side in FIG. 1). Also good. That is, the side close to the operating portion 5b of the operating lever 4 (the right side in FIG. 2A) is the side where the force of the operating portion 5b is easily applied. By increasing the bonding interface strength, the metal portion 6 can be further prevented from coming off from the resin portion 5.

  As a result, there is also an advantage that most of the operation lever 4 can be formed of an inexpensive synthetic resin while providing a fitting connection strength between the movable valve body drive shaft 3 and the metal portion 6.

  FIG. 3 shows another embodiment, and shows an example in which the recess 7 formed on the outer surface 6 a of the metal part 6 is formed by a bottomed groove-like recess 7 b that does not penetrate the metal part 6. The structure other than the metal part 6 is the same as that of the embodiment of FIGS. The bottomed groove-like recess 7b in this example is formed in a cross-sectional groove shape that is continuous in the horizontal direction. As a result, the bonding area between the resin and the metal at the bonding interface 8 including the bottomed groove-shaped recess 7b is increased, and the direction in which the metal portion 6 is removed from the resin portion 5 (downward in FIG. 3A). Thus, the retaining force by the bottomed groove-like recess 7b increases. Further, on the outer surface 6a of the outer surface of the metal portion 6 on the side close to the operation portion 5b (see FIG. 1) of the operation lever 4 (left side in FIG. 3A), three rows of bottomed grooves are formed. A recess 7b is formed. On the other hand, on the outer surface 6a of the operation lever 4 on the side away from the operation portion 5b (see FIG. 1) (on the right side in FIG. 3A), two rows of bottomed groove-shaped recesses 7b are formed. . That is, the side closer to the operation portion 5b of the operation lever 4 is the side where the force of the operation portion 5b is easily applied, and the resin on the closer side can be increased by increasing the number of the bottomed groove-like recesses 7b. It is possible to increase the bonding interface strength between the metal and the metal.

  As a modification of FIG. 3, in the example shown in FIG. 4, the recess 7 is formed by a plurality of spot-shaped bottomed recesses 7 c that are not continuous in the horizontal direction. Other configurations are the same as those in FIG. In the case of this example, by providing a plurality of bottomed recesses 7c, the joint area between the resin and the metal in the bottomed recesses 7c increases, and the amount of recesses in the metal part 6 is as shown in FIG. Can be reduced compared to Thereby, the strength improvement of the metal part 6 can be aimed at.

  FIG. 5 shows still another embodiment in which a flange-like convex portion 11 that can bite into the resin portion 5 is projected from the outer side surface 6a of the metal portion. The flange-shaped convex part 11 of this example protrudes from the cap-shaped head side, and the outer side surface 6a below the convex part 11 is a concave stepped part 7d. Other configurations than the metal part 6 are the same as those of the embodiment of FIG. In this example, the metal and the resin are combined at the stepped portion 7d. In addition, since the retaining force by the flange-shaped convex portion 11 increases in the direction in which the metal portion 6 comes out from the resin portion 5 (downward in FIG. 5A), the holding force between the metal and the resin is further strengthened. It is done.

  FIG. 6 is a modification of FIG. 5, in which claw-shaped convex portions 12 protrude from a plurality of locations on the outer surface 6 a of the metal portion 6, and a concave portion 7 e is formed between the convex portions 12 and 12. The convex part 12 of this example is inclined so as to become obliquely downward as it goes outward. As a result, when the resin enters the recess 7e, the resin becomes obliquely upward as it goes to the outer surface 6a. In the obliquely upward direction where the resin faces, the direction in which the metal part 6 comes out of the resin part 5 (FIG. 6 ( The direction is the opposite of (below a). Furthermore, since the convex part 12 bites into the resin, the bonding force between the resin and the metal is further strengthened in the concave part 7e.

  FIG. 7 shows still another embodiment, in which the metal part 6 is formed in a substantially cylindrical shape in plan view, and a screw-shaped groove 7 f is provided in the outer peripheral surface 6 a of the metal part 6. By combining the resin and the metal in the screw-shaped concave groove 7f, the bonding force between the resin and the metal is further increased. In this example, in addition to insert molding of the metal part 6, for example, the metal part 6 can be screwed into the resin part 5 in a later process after the resin part 5 is molded. In other words, the metal portion 6 is concentric with the vertical shaft portion 9 and screwed into the vertical shaft portion 9 while turning the metal portion 6 around the axis, so that the resin bites into the concave groove 7f. In this case, it is possible to improve the bonding interface strength between the resin portion 5 and the metal portion 6 at a lower cost.

  The operation lever type mixing faucet 1 of this embodiment is widely used in various watering facilities such as a bathroom vanity and a bathroom washroom.

DESCRIPTION OF SYMBOLS 1 Operation lever type mixing faucet 2 Hot and cold water mixing valve unit 3 Movable valve body drive shaft 4 Operation lever 5 Resin part 6 Metal part 7 Concave part 8 Joining interface

Claims (5)

An operation lever type mixing faucet comprising a hot water / water mixing valve unit for changing a mixing ratio of water and water and a discharge amount, and an operation lever for operating a movable valve body drive shaft of the hot / water mixing valve unit. The lever has a resin portion made of an operable synthetic resin and a metal portion connected and fixed to the movable valve body drive shaft, and is integrated on the outer surface of the metal portion to be joined to the resin portion. An operation lever type mixing faucet characterized in that a recess is provided and a metal and a resin are bonded in the recess.   The operation lever type mixing faucet according to claim 1, wherein the concave portion is a through hole penetrating from an outer side surface of the metal portion toward an inner side surface fitted to the movable valve body drive shaft.   The operation lever type mixed faucet according to claim 1, wherein the recess is a bottomed groove-like recess that does not penetrate the metal part.   4. The convex portion that protrudes outward from the concave portion and can bite into the resin portion is provided separately from the concave portion on the outer surface of the metal portion. 5. Operation lever type mixing faucet as described. The metal part is formed in a cap shape, the convex part is protruded from the outer side surface on the head side of the metal part, and the concave part is provided on the outer side surface on the opening side of the convex part. The operation lever type mixing faucet according to claim 4.

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