JP3814808B2 - Flow regulator - Google Patents

Description

  The present invention relates to a flow rate adjuster that is used mainly in the outlet of a water tap for the purpose of saving water.

JP 2002-201688 A

  Conventionally, for the purpose of saving water, a flow rate adjuster mainly used by interposing it at a water outlet of a water tap is known in Patent Document 1, and its configuration is of a thickness that can be interposed at the water outlet of a water tap. An outer cylinder and a flanged inner cylinder that is threadedly engaged with the upper part of the inner surface of the outer cylinder and that has a smaller outer diameter below the threaded portion to form a gap with the inner surface of the outer cylinder. The inner cylinder is formed with an adjustment cylinder that is screwed onto the inner surface of the inner cylinder. The inner cylinder is provided with a plurality of water holes that communicate with the gap on the side surface, and the adjustment cylinder is rotated with respect to the inner cylinder. By moving up and down, the degree of opening of the water passage holes provided in the inner cylinder can be changed, thereby adjusting the flow rate of water flowing out from the water outlet of the water tap, and adjusting the adjusted water to the outer cylinder. This is a structure that flows out through a gap between the inner cylinders.

  However, according to the conventional configuration, the outer cylinder, the inner cylinder, and the adjustment cylinder have a triple structure, and the water flowing in from the upper end of the adjustment cylinder is allowed to pass through the water hole provided in the side surface of the inner cylinder and the outer cylinder. Since it is the structure which flows out from the gap | interval between an inner cylinder, it has the following inconveniences. That is, since the conventional configuration described above has a triple structure in the diametrical direction, the inner diameter dimension of the adjustment cylinder for specifying the flow rate is limited corresponding to the thickness of the triple structure, and thus the flow rate adjustment range. There was an inconvenience that became narrow.

  In addition, according to the above-described conventional configuration, the adjustment cylinder is gradually loosened over time due to vibration accompanying water outflow or external vibration accompanying valve operation, and the flow rate fluctuates after adjustment. There was the inconvenience of having to readjust. In particular, in hotels and hospitals that require the use of a large number of flow rate adjusters, there is a disadvantage that a complicated operation of readjustment becomes a heavy burden.

  Therefore, the present invention has an outer diameter that can be inserted into the water outlet of the water tap in order to eliminate the inconveniences of the conventional one described above, and has an outer casing at the upper end, a screw portion on the upper inner surface, An outer cylinder having screw holes respectively provided therein, an adjustment cylinder that is screwed on the outer periphery of the screw portion, and is moved up and down in the outer cylinder by its rotation operation, and is provided at a lower portion of the outer cylinder. It is composed of a sealing tool that closes the lower end opening when it is lowered and closes the lower end opening, and a set screw that is screwed into the screw hole and fixes the adjustment cylinder to the outer cylinder.

Specifically, the lower end opening of the adjusting cylinder is formed by a portion of a spherical surface, and the sealing member is, by a Jiku扞projecting in bridge piece and left and right side surfaces extending along its axis of spherical shape in the case that has been formed, a sealing member, and a case made integrally provided on the Jiku扞the bottom frame piece conical.

  In addition, in the above, the spherical piece piece is rotatably attached to the shaft rod, and the spherical piece piece and the shaft rod are integrally formed, and both ends of the shaft rod are attached to the outer cylinder. Sometimes it is attached to the lower part so that it can rotate. Still preferably, the outer cylinder, the adjustment cylinder, the sealing tool, and the set screw are each made of stainless steel.

  Since the present invention has a dual configuration of the outer cylinder and the adjustment cylinder in the diameter direction, the diameter of the length adjustment cylinder corresponding to the thickness of at least one member can be formed larger than the conventional one, and the flow rate can be adjusted. The range can be set large, and after adjustment, the adjustment cylinder is fixed to the outer cylinder by a set screw, so there is no risk of fluctuations in the flow rate, and the reliability of the product can be increased. .

  In particular, according to the configuration of the second aspect, there is an advantage that the closeness between the lower end opening of the adjustment cylinder and the piece is high, the resistance to flowing water by the piece is small, and the flow of water is good. According to the third and fourth aspects of the present invention, since the spherical piece is rotatable with respect to the axis, the contact surface with the lower end opening of the adjustment cylinder is always displaced, and accordingly the outer periphery of the piece The entire surface has the advantage that it can be used for close contact with the lower end opening of the adjustment cylinder.

  The embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a plan view, FIG. 2 is a longitudinal side view thereof, and FIG. 3 is a bottom view. In FIG. 1, 1 has an outer casing 11 at the upper end and a threaded portion 12 at the upper part of the inner surface. In addition, an outer cylinder having a thickness that can be interposed in a water outlet of a water tap provided through a screw hole 13 on a side surface at an intermediate position in the height direction, the outer peripheral lower half part 14 of the outer peripheral upper The diameter is smaller than that of the half portion 15. 2 is an adjustment cylinder whose upper outer periphery is screwed with the screw part 12 and can be moved up and down in the outer cylinder 1, and its lower half part 21 is formed with a narrower diameter than the upper half part 23 via the step part 22. The lower end opening 24 is formed by a curved surface a forming a part of a spherical surface, as shown in FIG. 3 is a descending position of the adjustment cylinder 2, and a spherical piece 31 that closes the lower end opening 24 and closes the lower end opening 24, and a shaft that extends along the axis and protrudes on the left and right side surfaces. This is a sealing member comprising a flange 32, which is attached to the lower center position of the outer cylinder 1 by, for example, caulking the shaft flange 32. Reference numeral 4 denotes a set screw which is screwed into the screw hole 13 to fix the adjustment cylinder 2 to the outer cylinder 1, and is preferably lowered when the lower end opening 24 of the adjustment cylinder 2 is closed by the piece 31. At the position, the tip of the set screw 4 is provided so as to contact the outer peripheral step 22 of the adjustment cylinder 2. In the figure, reference numeral 25 denotes an engagement groove that engages with a tool, for example, a flat-blade screwdriver, in order to rotate the adjustment cylinder 2.

  As shown in FIG. 8A, the flow rate adjuster P configured in this way is connected to a water outlet 51 of a water faucet 5 and a connection position between a water injection pipe 6 connected to the water outlet 5 by a nut. In addition, water flows from the lower end of the adjustment cylinder 2 into the water outlet 61 provided at the tip of the water injection pipe 6 so that water flows from the upper end of the adjustment cylinder 2 or as shown by B in FIG. As shown in FIG. 9, or as shown in FIG. 9, water is inserted into the hose connection position at the base of the shower head 7 so as to flow from the upper end of the adjustment cylinder 2.

  2, water flows in from the upper end of the adjustment cylinder 2 and flows out from the lower end of the adjustment cylinder 2 through the gap between the lower end opening 24 of the adjustment cylinder 2 and the spherical surface of the piece piece 3. In the above, in the state of the solid line in FIG. 2 in which the lower end opening 24 of the adjustment cylinder 2 is in close contact with the outer surface of the piece 31, the flow rate flowing out from the adjustment cylinder 2 is zero. When the adjustment cylinder 2 is lifted by the turning operation, the gap S between the lower end opening 24 of the adjustment cylinder 2 and the close contact surface of the piece 31 to which the lower end opening 24 is in close contact is changed. The flow rate is adjusted according to S. Next, after adjusting the flow rate to a desired level by rotating the adjustment cylinder 2, the adjustment cylinder 2 is fixed to the outer cylinder 1 with a set screw 4.

  In the said Example, especially by making the piece piece 3 into a spherical shape, flowing water resistance is obtained very small, and a water flow flows out favorably, without spreading | diffusion. In the above, the outer cylinder 1, the adjustment cylinder 2, the sealing tool 3, and the set screw 4 are preferably made of stainless steel.

  Although the said Example has shown the case where the spherical piece piece 31 and the shaft rod 32 are comprised integrally as the sealing tool 3, FIG. 5 shows the spherical piece piece 31 and the shaft rod 32 separately. As a body configuration, the shaft rod 32 is inserted into the drilled shaft hole 33 along the axial center of the piece piece 31 and both ends thereof are fixed to the lower end portion of the outer cylinder 1 by caulking or the like. 6 shows a case where the shaft 31 is rotatably attached to the shaft rod 32, and FIG. 6 shows that both ends of the shaft rod 32 of the sealing portion 3 integrally configured with the piece 31 and the shaft rod 32 are connected to the lower end portion of the outer cylinder 1. Each case is shown to be rotatably mounted.

  According to the configuration shown in FIG. 5 and FIG. 6 described above, since the spherical piece 31 is rotatable with respect to the axis, the contact surface with the lower end opening 24 of the adjustment cylinder 2 is always displaced, and accordingly The entire outer periphery of the piece 31 can be used effectively for close contact with the lower end opening 21 of the adjustment cylinder 2.

  FIG. 7 shows another embodiment in which the piece 31 is formed in a conical shape, and a shaft rod 32 is integrally provided at the lower portion thereof to constitute the sealing device 3. In this configuration, the adjusting cylinder is shown. The lower end opening 24 of 2 is formed in an inclined shape so as to be in close contact with the conical surface of the piece 31, and its operation is basically not different from the case of the above embodiment.

Plan view Longitudinal side view Bottom view Partial enlarged sectional view showing the close contact state between the lower end edge of the adjustment cylinder and the piece Vertical side view in another embodiment A longitudinal side view in still another embodiment A longitudinal side view in still another embodiment Side view showing usage Side view showing other usage conditions

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer cylinder 11 Outer casing 12 Screw part 13 Screw hole 2 Adjustment cylinder 22 Step part 3 Sealing tool 31 Piece piece 32 Shaft holder 4 Set screw

Claims (6)

  It has an outer diameter that can be inserted into the water outlet of the water tap, and has an outer casing provided at the upper end, a screw portion on the upper inner surface, and a screw hole on the side surface, and an outer periphery on the screw portion. An adjustment cylinder that is screwed and moved up and down in the outer cylinder by its turning operation, and a lower opening of the adjustment cylinder closes and closes the lower opening when the adjustment cylinder is lowered. A flow rate adjusting device comprising a sealing tool and a set screw which is screwed into the screw hole and fixes the adjusting cylinder to the outer cylinder. Lower end opening of the adjusting cylinder is formed by a portion of a spherical surface, and the sealing device is, that have been formed by the Jiku扞projecting the left and right side surfaces extending along its axis and bridge piece of spherical shape according Item 1. A flow regulator according to item 1.   The flow rate adjusting device according to claim 2, wherein a spherical piece is rotatably attached to a shaft rod.   The flow rate adjusting device according to claim 2, wherein the spherical piece piece and the shaft rod are integrally formed, and both end portions of the shaft rod are rotatably attached to the lower portion of the outer cylinder.   2. The flow rate adjusting device according to claim 1, wherein the sealing member is formed by integrally providing a shaft rod at a lower portion of the cone-shaped piece.   6. The flow rate adjusting device according to claim 1, wherein the outer tube, the adjusting tube, the sealing tool, and the set screw are made of stainless steel.

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