JP4640698B2 - Water discharge device - Google Patents

Description

  The present invention relates to a water faucet holding device for a faucet that can be pulled out by a shower hose installed in a kitchen, a washstand, a bathroom, and the like.

  The engagement with the support portion of a conventional water discharger installed in a kitchen or the like is generally that of the locked portion 101 as shown in FIG. 7, and has a serrated shape called serration. This is performed by the engagement between the locking portion 102 and the locked portion 101. In such a case, it is often impossible to rotate while being mounted, and in the case of a specification capable of rotating, the number of parts is increased, workability at the time of assembly is poor, and the cost is increased. In addition, water from the shower head in use or water from the hose often enters from the opening of the locking portion 102 of the faucet body. Therefore, some kind of water entry prevention mechanism was necessary.

  On the other hand, when the locked portion is horizontal or downward, it is advantageous for preventing water entry, but a mechanism for holding the water discharger on the support tube is necessary so that the water discharger does not come off due to gravity. Therefore, a groove is provided on the inner peripheral surface of the water discharger side connection port, and further, the connection port end surface is made into a slit, and the groove provided on the water discharger side connection port and the protrusion provided around the support tube side connection port are fitted. There was what was effective in holding | maintaining the water discharging tool at the time of facing down (for example, refer patent document 1).

  In such a case, since it is held at only one place on the connection port side, there is a problem that the water spouting device rattles up and down or left and right or there is a gap between the water spouting device and the support tube. It was. Moreover, when the fitting of the water discharger and the support tube is tightened to solve the above problem, there is also a problem that the operation force for attaching and detaching the water discharger increases. In this way, adjusting the fitting so that the water discharger and the support tube are not loose and can be attached and detached with a light operating force, loosely fitting and strong ones are created due to molding variations of each molded product. There was a drawback that adjustment was very time-consuming.

JP 2003-147821 A

The present invention has been made to solve the above problems, and an object of the present invention is to hold the water discharger securely and without rattling on the support tube regardless of the mounting direction of the water discharger. It is possible to provide a water discharger that can easily set the optimal attachment / detachment operation force of the water discharger.

In order to achieve the above object, according to the first aspect of the present invention, a water discharger is connected to the tip of a hose inserted through the support tube, and the support tube and the end of the water discharger are detachable, and the support The tube is provided with a cylindrical projecting portion projecting coaxially with the hose on the detachable portion side, and the water discharger is provided with a cylindrical engaging portion engaging with the outer periphery of the projecting portion on the detachable portion side. In the water discharge device, before the engagement between the protruding portion and the cylindrical engaging portion engaged with the outer periphery of the protruding portion, the outer diameter d of the tip of the protruding portion and the tip of the protruding portion are engaged. The inner diameter D of the engaging part is configured to satisfy D ≦ d, and a concave part is provided coaxially with the protruding part at the tip of the protruding part, and the tip side of the engaging part is in the radial direction It has elasticity, and it engages with the outside of the projection when the tip of the projection and the inside of the engagement portion are engaged .
This makes it possible to reduce the thickness of the tip of the protrusion while reducing the gap between the hose and the inner diameter of the tip, and when the water discharger is attached to the support tube, the tip of the protrusion is inside (in the direction of the protrusion). Since the projecting portion and the engaging portion can be engaged with each other without a gap, rattling of the water discharger can be eliminated.
Moreover, even if the size of the tip of the protrusion varies, the tip of the protrusion deforms inward, so that the attaching / detaching operation force can be lightened and stabilized, so that the water discharger can be pulled out smoothly.
In addition, the distal end side of the engaging portion has elasticity in the radial direction, and when the distal end of the protruding portion is engaged with the inner side of the engaging portion, the engaging portion is clicked by engaging with the outer side of the protruding portion. A feeling can be given and wearing of a water discharge tool can be checked.

According to the second aspect of the present invention, a slit is provided in the protruding direction on the outer peripheral convex portion that engages with the engaging portion of the water discharger formed by the concave portion at the tip of the protruding portion.
Thereby, the front-end | tip of a protrusion part can deform | transform into a protrusion part axial direction with a lighter force, and also can adjust an elastic force with the number of slits.

According to a third aspect of the present invention, there are a plurality of the slits in a symmetric direction.
Thereby, an elastic force becomes uniform and the attachment / detachment force of the water discharger and the holding force of the water discharger can be made uniform regardless of the directionality.

  According to the present invention, it is possible to reliably attach and detach the water discharger to / from the support tube with an optimum operating force, and there is an effect that the water discharger can be easily detached, gaps are not formed, or rattling occurs.

Hereinafter, the present invention will be described in detail based on illustrated embodiments. FIG. 1 is an example of a faucet 1 attached to a kitchen. FIG. 1A is an external view of a state in which the water discharger 3 is pulled out from the faucet 1, and FIG. 1B is an external view of a state in which the water discharger 3 is held by the support tube 2 formed in the faucet 1. . The water discharger 3 to which the shower hose 4 is connected can be attached to the support tube 2 at the end, and can be pulled out through the shower hose 4 and used.
Further, a water spray plate 50 that switches the water discharge state of the faucet 1 between rectification and shower is formed at the lower end of the water discharger 3.

  The support tube 2 drilled in the faucet 1 has a protruding portion 20 that is a connection portion with the water discharger 3 at the end of the support tube 2, and the water discharger 3 is pulled out from the support tube 2 together with the shower hose 4. Water that is in use or water that has adhered to the surface of the shower hose 4 is prevented from easily entering from the connecting portion side of the support tube 2, that is, the protruding portion 20 side. That is, the protruding portion 20 of the support tube 2 has a convex shape as shown in FIG. 1 (see FIG. 4B), and is almost the same as the outer diameter of the shower hose 4 that passes through the inside so as to make it difficult for water to enter. They are formed with equal inner diameters, so that there is almost no gap for water to enter.

  FIG. 2 is a schematic cross-sectional view of a state in which the water discharger 3 of the faucet 1 is held by the support tube 2. The faucet 1 includes a main body 6 attached to a counter 8, a valve portion 7 that adjusts the mixing ratio and amount of discharged water, and a spout portion 5 that rotates around the axis of the main body 6. And a support tube 2 that communicates with the spout unit 5 and supports the water discharger 3.

  The main body 6 is configured integrally with an upper main body guide 14, and the main body guide 14 has a water side water passage, a hot water side water passage, and a mixed water passage (not shown) inside. The valve guide 15 that holds the valve portion 7 is integrally formed. Further, the valve guide 15 passes through the internal space 6a of the main body 6 and is watertightly connected to the fixed shaft 10 having the downstream water passage 10a.

  The faucet 1 is attached to the counter 8 by inserting the fixed shaft 10 into the opening 9 of the counter 8 and sandwiching the counter 8 from the lower side of the counter 8 via a horseshoe fitting 11 and a spacer 12. Then, tighten the nut 13 from below the counter 8. As a mechanism for attaching the faucet 1 to the counter 8, there are other methods such as tightening with a quick nut or top surface construction which is a known technique that can be tightened from the upper surface side of the counter 8 without diving under the counter 8. Here, a method of fastening with the horseshoe fitting 11 is described as a representative example.

  The water discharger 3 connected to the shower hose 4 is detachably attached to the support tube 2 and can be pulled out and used via the shower hose 4. Moreover, the shower hose 4 can be accommodated in the main body 6 through the support tube 2, and the water discharger 3 can be fixed to the support tube 2.

FIG. 3 shows an exploded perspective view of the water discharger 3. The water discharger 3 includes a water spray plate outer cylinder 51, a water spray plate inner cylinder 52, a water discharge inner 53, and a water discharge cover 54. The shower hose 4 is connected to the water discharge inner 53 and has a thin fixed pin 55 having an open upper end. Via the water discharge cover 54. The water spray plate outer cylinder 51 and the water spray plate inner cylinder 52 are inserted into the front end opening 57 of the water discharge cover 54 with screws 56 and connected to the front end fixing portion 58 of the water discharge inner 53. The water spray plate 50 has a structure for switching the water discharge form by rotating the water spray plate outer cylinder 51. Here, the rear end side of the water discharge inner 53, that is, the portion fitted on the protruding portion 20 has a structure having an engagement inner diameter portion 32 (inner diameter dimension: D).
Further, when inserting the water discharge inner 53 into the water discharge cover 54, in consideration of assemblability and retention, a groove-shaped base 48 provided at the tip of the water discharge inner 53 and a convex shape provided on the inner surface of the water discharge cover 54. The guide rib 40 is slid along the groove and is inserted and assembled.
Here, the water discharge inner is preferably formed from polyacetal, polysulfone, polypropylene, or the like as a material for the purpose of providing strength, slidability, hot water resistance, and elasticity to the engagement inner diameter portion. Similarly, for the purpose of imparting strength, slidability, and elasticity, the protruding portion 20 is desirably molded from polybutylene terephthalate, polyacetal, polysulfone, polypropylene, or the like.

  In addition, the proximal end portion of the water discharge inner 53 has a cylindrical engagement portion 30 that is an elastic means, and a plurality of slits 31 constitute a claw 34 having elasticity in the radial direction. Further, a groove 33 is formed inside the claw 34, and when the water discharger 3 is attached to the protrusion 20, the protrusion 23 (see FIG. 4B) of the protrusion 20 is By engaging the groove 33, the mounting of the water discharger 3 can be confirmed by the click sound and the click feeling.

  Next, the connection between the water discharger 3 and the support tube 2 is shown in FIG. FIG. 4A is a diagram in which the water discharger 3 is connected to the support tube 2, and FIG. 4B is a cross-sectional view and a side view of the protruding portion 20. Here, the water discharger is formed by fitting one or more slits 31 formed in the water discharge inner 53 inside the water discharger 3 with the convex portion 23 on the base side of the protrusion 20 attached to the support tube 2 side. 3 is held by the support tube 2.

Further, the outer diameter of the distal end portion 21 a (outer diameter dimension: d) of the protruding portion 20 is the same as the inner diameter of the cylindrical engagement inner diameter portion 32 (inner diameter dimension: D) of the water discharge inner 53. Before the inner diameter portion 32 is engaged, the diameter is the same or slightly larger. Further, a concave portion 21 d is formed at the tip portion 21 a of the protruding portion 20.
By forming the concave portion 21d, the protruding portion distal end portion 21a is composed of an outer peripheral convex portion 21e, a concave portion 21d, and an inner peripheral convex portion 21f.
The inner peripheral convex portion 21f makes the gap between the shower hose 4 and the distal end inner diameter small, and the outer peripheral convex portion 21e makes it possible to reduce the thickness of the distal end portion 21a of the protruding portion 20. When mounted, the outer peripheral convex part 21e of the tip part 21a of the projecting part 20 is deformed inward (in the projecting part 20 axial direction) to give an elastic force, and the projecting part 20 and the engaging part 30 can be engaged with no gap. Therefore, shakiness of the water discharge tool 3 can be eliminated.
Moreover, even if the dimensions of the tip of the protruding portion vary, it is possible to lighten and stabilize the attaching / detaching operation force by deforming the tip of the protruding portion inward, so that the operating force when the water discharger 3 is pulled out can be reduced. Can do.
Further, one or more slits 36 are provided in the protruding direction of the outer peripheral convex portion 21e. As a result, the outer peripheral convex portion 21e of the protruding portion 20 can be deformed inward (in the protruding portion 20 axial direction) with a lighter force, and the elastic force can be adjusted by the number of slits 36. The elastic force of the tip 21a of the part 21e can be adjusted.

  As described above, when holding the water discharger 3, the claw 34 is engaged with the convex portion 23 at the base of the protruding portion 20, and the distal end portion 21 a of the protruding portion 20 is engaged with the cylindrical engagement inner diameter portion 32. By holding in, it can be attached and detached with a light and stable force, and further, the water discharger 3 can be held without rattling. Here, the convex part 23 and the groove part 33 do not interfere even if the concave and convex shapes are reversed.

  FIG. 5 shows an embodiment of the cylindrical engagement portion 30. As shown in the figure, the proximal end portion of the engagement inner diameter portion 32 is slightly larger in diameter than the outer diameter portion of the distal end portion 21a of the projection portion 20 so that the distal end portion 21a of the projection portion 20 can be easily inserted into the engagement portion 30. The front portion where the tip 21 a abuts against the inner surface of the engaging portion 30 is a tapered portion 25. Thereby, only when the water discharging tool 3 is engaged with the protrusion part 20, resistance force generate | occur | produces and attachment / detachment operation can be performed very smoothly.

  FIG. 6 shows still another embodiment of the cylindrical engagement portion 30. In the example of FIG. 6, when the water discharger 3 is engaged with the protruding portion 20, the stepped portion 26 is the back side of the engaging portion 30 with which the tip 21 a of the protruding portion 20 contacts. Even in this case, similarly to the taper portion 25, resistance force is generated only when the water discharger 3 is engaged with the protruding portion 20, and the attaching / detaching operation can be performed very smoothly.

Furthermore, since the mutual fitting shape is not a peculiar shape such as a sawtooth shape but a cylindrical shape, the water spouting tool 3 can be swung with the hose 4 as an axis even in a mounted state.

It is an external appearance perspective view at the time of attaching the water discharging apparatus of this invention to the kitchen faucet. It is a schematic sectional drawing of the state which made the support pipe hold | maintain the water discharging tool of the faucet of this invention. It is a disassembled perspective view of the water discharging tool of this invention. It is sectional drawing which shows the connection of the water discharging tool of this invention, and a support pipe. It is a figure which shows embodiment of the cylindrical engaging part of this invention. It is a figure which shows another embodiment of the cylindrical engaging part of this invention. It is an external appearance perspective view at the time of pulling out the shower hose of the conventional water discharging apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Water faucet 2 ... Support pipe 3 ... Water discharger 4 ... Shower hose 5 ... Spout part 6 ... Main body 7 ... Valve part 8 ... Counter 9 ... Opening part 10 ... Fixed shaft 11 ... Horseshoe fitting 30 ... Engagement part 31 ... Slit

Claims (3)

A water discharger is connected to the tip of the hose inserted through the support tube, and the end of the support tube and the water discharger is detachable, and the support tube has a tube protruding in the same direction as the hose on the attachment / detachment side. The water discharge device provided with a cylindrical engaging portion on the attachment / detachment portion side that engages the outer periphery of the protrusion on the water discharge tool.
Before the engagement between the protruding portion and the cylindrical engaging portion that engages with the outer periphery of the protruding portion, the outer diameter d of the tip of the protruding portion and the engaging portion that engages with the tip of the protruding portion The inner diameter D of D is configured to satisfy D ≦ d,
At the tip of the protrusion, a recess is provided coaxially with the protrusion,
Further, the distal end side of the engaging portion is elastic in the radial direction, and engages with the outside of the protruding portion when the leading end of the protruding portion and the inside of the engaging portion are engaged. A water discharge device. The water discharge device according to claim 1, wherein a slit is provided in the protruding direction on the outer peripheral convex portion that engages with the engaging portion of the water discharger formed by the concave portion at the tip of the protruding portion. The water discharging apparatus according to claim 2, wherein there are a plurality of slits in a symmetric direction.

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