JP4879044B2 - Faucet device - Google Patents

Description

  The present invention relates to a faucet device, and more particularly, a mounting hole insertion portion is extended from a housing in a faucet body, and a fixing nut is screwed into a male thread portion on an outer peripheral surface on the back side of a mounting base such as a counter. The present invention relates to a faucet device of a type in which a stopper body is fixed to a mounting base.

Conventionally, such a faucet device as shown in FIG. 12 is known (disclosed in Patent Document 1 below).
In the figure, reference numeral 200 denotes a faucet body of a single lever type faucet device, which is fixed to a counter (attachment base) 202 in an attachment hole 204.

  A housing 210 having a cylindrical peripheral wall portion 206 and a bottom portion 208 is incorporated in the faucet body 200, and a valve unit (valve portion) 212 for controlling spout water is accommodated therein. An operation lever 214 is connected to the valve unit 212 by a drive arm 216.

In this faucet device, the operation lever 214 is rotated up and down to perform water discharge, water stoppage, and water volume adjustment, and the left and right rotation operation is performed to adjust water discharge temperature.
Reference numeral 218 denotes a decorative cover that covers the housing 210.

The bottom 208 is provided with a pair of water inlet 220 and outlet 222, and water (cold water) and hot water (hot water) are supplied to the valve portion 212 through the inlet 220.
Moreover, the mixed water which came out of the valve part 212 flows out from the outflow port 222 outside.

A mounting hole insertion portion 224 extends downward from the housing 210 in the drawing.
The attachment hole insertion portion 224 is inserted through the attachment hole 204 of the counter 202 and protrudes to the lower side (back side), and a fixing nut 228 is screwed into the male screw portion 226 on the outer peripheral surface thereof.
The faucet body 200 is fixed to the counter 202 by the screwing of the fixing nut 228 so that the counter 202 is sandwiched vertically between the housing 210 and the fixing nut 228 via the triangular packing 230.

Here, the mounting hole insertion part 224 includes an outer cylinder part 232 and a core part 234 inside and above the outer cylinder part 232, and the outer cylinder part 232 is integrally formed of the same resin material as the peripheral wall part 206 of the housing 210. .
The core portion 234 is integrally formed of the same metal as the bottom portion 208.

A state in which a pair of connection holes 236 for connecting supply pipes (piping) 240 for supplying water and hot water in an inserted state communicates with the corresponding pair of inlets 220 in the core portion 234, that is, the mounting hole insertion portion 224, respectively. The supply pipe 240 is inserted and connected to the supply pipe 240 from the lower side opposite to the valve section 212.
Here, the supply pipe 240 is screwed to the connection hole 236. The supply pipe 240 and the connection hole 236 are sealed with an elastic O-ring.

  The attachment hole insertion portion 224 also has a connection hole 238 for connecting an outflow pipe (pipe) 242 made of a copper pipe for allowing the mixed water flowing out from the valve section 212 to flow to the outside, in communication with the outflow port 222. Is provided. Then, in a state where the outflow pipe 242 is inserted into the connection hole 238, the outflow pipe 242 is welded (soldered) to the core portion 234 of the attachment hole insertion portion 224 in a watertight manner.

  In the faucet device shown in FIG. 12, the bottom portion 208 of the housing 210 and the core portion 234 of the mounting hole insertion portion 224 are made of metal because the outflow pipe 242 made of a copper pipe is welded and joined at the connection hole 238. However, when the bottom portion 208 and the core portion 234 are made of metal, the cost increases.

Therefore, the entire housing 210 including the bottom portion 208, the peripheral wall portion 206, and the mounting hole insertion portion 224 are integrally formed of resin, and the outflow pipe 242 is attached with a sealing structure using an annular sealing member such as an O-ring, like the supply pipe 240. It is conceivable to connect to the hole insertion part 224.
However, if the bottom portion 208 and the mounting hole insertion portion 224 are made of a resin molded product integrated with the housing 210, the following problems occur.

  Specifically, a circular seal surface in which the outer peripheral surfaces of the supply pipe 240 and the outflow pipe 242 are elastically fitted to the inner surfaces of the connection holes 236 and 238 formed in the mounting hole insertion portion 224 via an annular seal member such as an O-ring. However, if the mounting hole insertion portion 224 is made of resin, the diameter of the resin at the time of molding is based on the uneven thickness around the connection holes 236 and 238. The directional shrinkage (sink) becomes uneven, and the circular sealing surface is distorted and deformed, resulting in a lower roundness, which causes a problem that the accuracy of the seal is lowered.

In view of this, it is conceivable that the other part is thinned while leaving the meat in a cylindrical shape with a substantially uniform thickness around the sealing surface.
However, in this case, when the fixing nut 228 is screwed into the lower portion of the mounting hole insertion portion when the faucet body is attached, the load at the time of tightening the fixing nut is concentrated on the cylindrical portion remaining after the thickness removal, There is a risk that the strength is insufficient at the portion where the mounting hole insertion portion is thinned.

  In addition, in Patent Document 2 below, in order to ensure the roundness of the shaft hole of the resin-made bearing holder, there is disclosed a part in which the portion around the shaft hole is thinned (thick stealing). Is different from the present invention.

JP 2003-27539 A JP 2002-303331 A

  The present invention is based on the above circumstances, and even when the housing and the mounting hole insertion portion are made of resin, good sealing performance can be secured at the pipe connection portion, and the fixing nut is firmly screwed into the mounting hole insertion portion. The purpose of this is to provide a faucet device that does not cause a problem in strength even in this case.

  Thus, according to the first aspect of the present invention, a housing having a cylindrical peripheral wall portion and a bottom portion, which is incorporated in the faucet body and accommodates the valve portion for controlling the spouting water therein, is provided with a mounting base such as a counter. A mounting hole insertion portion for inserting the mounting hole is extended, and a fixing nut is screwed into a male screw portion on an outer peripheral surface of the mounting hole insertion portion on the back side of the mounting base so as to fix the faucet body to the mounting base. The bottom portion is provided with an inflow port for allowing water to flow into the valve portion and an outflow port for allowing water to flow out from the valve portion, and the mounting hole insertion portion includes piping. In the faucet device, which is inserted and connected from the opposite side to the valve portion, and is provided with connection holes communicating with the inflow port and the outflow port, the housing and the mounting hole insertion portion are integrally formed of resin. The mounting hole insertion part has the connection A circular seal surface is formed at a predetermined position in the axial direction to elastically fit the outer peripheral surface of the pipe via a seal member on the inner surface of the pipe, and the other portion is left with a cylindrical shape around the seal surface. A thinning portion is formed by removing the thickness, and the mounting hole insertion portion is configured in a form in which the upper portion on the valve portion side and the lower portion on the opposite side are connected by a cylindrical portion which is a remaining portion, and further, the lower portion The male screw portions are formed on the outer peripheral surfaces of the upper portion and the upper portion, and the fixing nut is screwed over the lower and upper male screw portions.

  According to a second aspect of the present invention, in the first aspect, the cylindrical portion is arranged at a position where the outer periphery partially overlaps the outer periphery of the upper and lower portions in the axial view of the mounting hole insertion portion, The male screw part that connects the upper male screw part and the lower male screw part is formed in a portion overlapping the outer periphery of the upper part and the lower part of the outer periphery of the cylindrical part.

Effects and effects of the invention

As described above, according to the present invention, the housing including the peripheral wall portion and the bottom portion and the mounting hole insertion portion are integrally formed of resin, and the mounting hole insertion portion has an annular outer peripheral surface of the pipe on the inner surface of the connection hole. Forming a circular sealing surface that is elastically fitted through the sealing member, and providing a thinning part formed by removing the other part of the cylinder while leaving the cylindrical shape around the sealing surface. Is formed in a form in which the upper part on the valve part side and the lower part on the opposite side are connected by a cylindrical part that is a remaining part, and further, on each outer peripheral surface of the lower part and the upper part, a male screw part is formed, The fixing nut is screwed over the lower and upper male thread portions.
According to the present invention, even when the fixing nut is strongly screwed into the mounting hole insertion portion, the fixing nut is screwed over the upper and lower portions of the thinned portion of the mounting hole insertion portion, and the tightening force For this reason, it is possible to avoid the concentration of the load on the mounting hole insertion portion in the thinned portion and to fix the faucet body to the mounting base body with high strength.

  In this case, the cylindrical portion is arranged so that the outer periphery thereof partially overlaps the outer periphery of the upper and lower portions in the axial view of the mounting hole insertion portion, and the upper male screw portion and the lower male screw portion. Can be formed in a portion overlapping the outer periphery of the upper part and the lower part of the outer periphery of the cylindrical part (claim 2).

  In this way, the threading allowance between the male threaded portion of the mounting hole insertion portion and the female threaded portion of the fixing nut is increased in the axial direction, the strength of the threaded portion is increased, and the fixing nut is attached to the lower end of the mounting hole inserting portion. Since the lower male screw part and the upper male screw part are continuous with each other at the cylindrical male screw part when screwing into the male screw part of the mounting hole insertion part, the fixing nut is screwed smoothly. be able to.

  That is, when the lower and upper male screw parts are divided and separated in the middle, when the fixing nut screwed into the lower part is further screwed into the upper male screw part, the upper male screw is not In some cases, the fixing nut cannot be smoothly screwed into the portion. According to claim 2, the fixing nut is smoothly screwed in from the lower male screw portion to the entire upper male screw portion without causing such inconvenience. can do.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, reference numeral 10 denotes a counter as an attachment base, and a faucet body 12 and a water discharge portion 14 are provided at positions spaced from each other with respect to the counter 10.
The water discharge unit 14 includes a water discharge head 16 and a tubular holder 18 that holds the water discharge head 16, and the water discharge head 16 can be pulled out from the storage position together with the flexible hose 20 connected thereto. Yes.

The water discharge head 16 has a water discharge port 22 on the lower surface of the tip, and a switching operation unit 24 for switching the water discharge from straight water discharge to shower water discharge or vice versa on the front surface.
The whole water discharger 14 is also movable up and down between the raised position and the lowered position with the sliding movement of the slide tube 26.

  The faucet body 12 accommodates a valve unit (valve part) 42 (see FIG. 2), which will be described later, in the interior thereof, and is provided with an operation lever 28 at the upper part thereof. Is operatively coupled to.

Reference numeral 30 denotes a supply pipe (pipe) for allowing water (cold water) and hot water (hot water) to flow into the faucet body 12. Here, the supply pipe 30 is constituted by a flexible pipe.
Reference numeral 32 denotes an outflow pipe (pipe) through which the mixed water flows out from the faucet body 12, and here the outflow pipe 32 is made of a copper pipe.
The hose 20 is connected to the lower end of the outflow pipe 32.

FIG. 2 shows the internal structure of the faucet body 12 in detail along with its peripheral part.
As shown in the figure, the faucet body 12 is fixed to the counter 10 in the mounting hole 34.
A housing 40 having a cylindrical peripheral wall portion 36 and a bottom portion 38 is incorporated in the faucet body 12, and a valve unit (valve portion) 42 for controlling spout water is accommodated therein.

The valve unit 42 has a valve case 44, and a fixed valve body 46 made of a ceramic disk and a movable valve body 48 having a sliding part made of a ceramic disk on its upper surface are built in. Has been.
An operation lever 28 is connected to the movable valve body 48 via a drive arm 50.
In this example, the operation lever 28 is rotated up and down to perform water discharge, water stoppage, and water volume adjustment, and the left and right rotation operation performs water discharge temperature adjustment.

As shown in FIGS. 3 and 5, a male screw portion 52 is provided on the outer peripheral surface of the upper portion of the peripheral wall portion 36 of the housing 40, and a nut 54 serving as a cap shown in FIGS. It is screwed down in the middle. The valve unit 42 is pressed downward by screwing the nut 54 downward in the figure.
Reference numeral 56 denotes a decorative cap, and the housing 40 and its internal structure are covered with the decorative cap 56 from the outside.

From the housing 40, a mounting hole insertion portion 58 whose outer peripheral shape having a smaller diameter is a circular shape extends downward in the figure.
The attachment hole insertion portion 58 is inserted through the attachment hole 34 of the counter 10 and protrudes to the lower side (back side) thereof, and a male screw portion formed on the outer peripheral surface of the attachment hole insertion portion 58 below the counter 10. A fixing nut 62 is screwed into 60 from the lower side in the figure.
The faucet body 12 is fixed to the counter 10 by the screwing of the fixing nut 62 so that the housing 40 and the fixing nut 62 sandwich the counter 10 from both the upper and lower sides via the triangular packing 64.

In this embodiment, the housing 40 having the peripheral wall portion 36 and the bottom portion 38 and the mounting hole insertion portion 58 constitute a resin body made of an integrally molded resin product.
An inflow port 66 through which water and hot water flow into the valve unit 42 and an outflow port 68 through which the mixed water from the valve unit 42 flows out are formed in the bottom 38 made of resin.

  On the other hand, in the mounting hole insertion portion 58, a pair of connection holes 70 for connecting the supply pipe 30 made of the above-described flexible pipe for supplying water and hot water respectively to the insertion state are in communication with the corresponding pair of inlets 66. Further, a connection hole 72 for connecting the outflow pipe 32 made of the copper pipe in an inserted state is provided in a state of communicating with the corresponding outlet 68.

3 and 7 specifically show the connection structure of the supply pipe 30 and the outflow pipe 32 to the attachment hole insertion portion 58 together with the structure of the attachment hole insertion portion 58.
As shown in FIG. 7, a circular seal surface 74 is formed at a predetermined position in the axial direction on each inner surface of the connection hole 70 connecting the supply pipe 30.

On the other hand, an annular holding groove 76 is formed at the upper end of each of the pair of supply pipes 30, and an O-ring 78 as an elastic seal ring is held therein.
The outer peripheral surfaces of the upper ends of the pair of supply pipes 30 are elastically fitted to the seal surface 74 via the O-rings 78, and the inner surface of the connection hole 70 and the outer peripheral surface of the supply pipe 30 are sealed in a watertight manner at the same part. ing.

  On the other hand, also in the connection hole 72 of the outflow pipe 32, a circular seal surface 80 is formed at a predetermined position in the axial direction of the inner surface, and the outer peripheral surface of the upper end portion of the outflow pipe 32 is covered with the seal surface 80. The O-ring 78 is elastically fitted, and the space between the outer peripheral surface of the upper end portion of the outflow pipe 32 and the inner surface of the connection hole 72 is sealed through the O-ring 78.

As shown in FIG. 7, each of the pair of supply pipes 30 has an annular engagement groove 94 at a lower position of the holding groove 76 and the O-ring 78, and an annular flange portion 96 at the lower side thereof. Is provided. Each supply pipe 30 is prevented from being removed from the connection hole 70 in the engagement groove 94 with the flange portion 96 fitted in each connection hole 70.
Also in the outflow pipe 32, an annular flange portion 98 is provided below the O-ring 78, the flange portion 98 is fitted into the connection hole 72, and the flange portion 98 is prevented from being removed from the connection hole 72. Has been.

FIGS. 8 to 10 specifically show the structure for preventing the supply pipe 30 and the outflow pipe 32 from being removed.
In the figure, reference numerals 100 and 102 denote thin plate-shaped retaining members, of which the retaining member 100 includes engaging portions 108 and 110 having arcuate surfaces 104 and 106, respectively, and the retaining member 102 has a pair of arcuate surfaces 114. The engaging portion 116 is provided.

Correspondingly, the mounting hole insertion portion 58 is provided with insertion holes 120 and 122 having shapes corresponding to the retaining members 100 and 102 as shown in FIGS. The retaining members 100 and 102 are inserted into the holes 120 and 122 inwardly from the radially outer side, respectively.
In the state in which the retaining member 100 is in the state in which the circular arc surfaces 104 and 106 are brought into contact with the outer peripheral surface of the outflow pipe 32 and the outer peripheral surface of the supply pipe 30 in the inserted state, the engaging portions 108 and 110 The lower surface of 98 is engaged with the engagement groove 94 of the supply pipe 30.

Further, in the retaining member 102, the engaging portion 116 engages with the engaging groove 94 of the supply pipe 30 so that the pair of arcuate surfaces 114 are in contact with the outer peripheral surfaces of the pair of supply pipes 30 in the inserted state. Based on the engagement, the retaining members 100 and 102 prevent the pair of supply pipes 30 and the outflow pipes 32 from being removed from the connection holes 70 and 72.
The outer circumferential surface on the radially outer side of the retaining member 100 is an arc surface 112 having the same curvature as the outer circumferential surface of the mounting hole insertion portion 58, and the outer circumferential surface on the radially outer side of the retaining member 102 is the mounting hole insertion portion. The circular arc surface 118 has the same curvature as the outer peripheral surface 58.

As shown in FIG. 8B, the retaining members 100 and 102 are inserted into the insertion holes 120 and 122, and the positions of the circular arc surfaces 112 and 118 are slightly smaller than the outer peripheral surface of the mounting hole insertion portion 58. The position will be pulled inward.
The retaining member 102 is provided with a groove 124, and this groove 124 is fitted to a protrusion 126 formed on the attachment hole insertion portion 58 side.
In the present embodiment, the insertion hole 120 and the retaining member 100 are disposed at a position hidden in a lower portion 90 (described later) of the attachment hole insertion portion 58 and inside the fixing nut 62 screwed into the attachment hole insertion portion 58. Yes.

  As shown in FIGS. 3, 5, 6, 7, and 10, the mounting hole insertion portion 58 has a uniform thickness around the seal surfaces 74 and 80 at the site where the seal surfaces 74 and 80 are formed. The other part is thinned, leaving the meat in a cylindrical shape. In the figure, 82 represents a cylindrical portion formed around the sealing surface 74, 84 represents a cylindrical portion formed around the sealing surface 80, and 86 represents a thinning portion.

As shown in FIGS. 3, 5, and 6, the mounting hole insertion portion 58 includes an upper portion 88 on the valve unit 42 side and a lower portion 90 on the opposite side as a cylindrical portion 82. , 84 are connected to each other.
As clearly shown in FIG. 5, male screw portions 60 are formed on the outer peripheral surfaces of the upper portion 88 and the lower portion 90 of the attachment hole insertion portion 58.
Correspondingly, the fixing nut 62 is configured in advance so as to be screwed over the male screw portion 60 of the lower portion 90 and the male screw portion 60 of the upper portion 88 as shown in FIGS. .

In this embodiment, as shown in FIGS. 3, 6, 10, and 11, each of the cylindrical portions 82 and 84 is a part of the outer periphery in the axial view of the mounting hole insertion portion 58. Are arranged so as to overlap the outer periphery of each of the lower portion 90 and the upper portion 88.
In addition, as shown in FIG. 3, each cylindrical part 82 and 84 is made into the shape where the part by the side of the center continued integrally. That is, in the central portion, each of the cylindrical portions 82 and 84 forms part of another adjacent cylindrical portion.

  As clearly shown in FIG. 5, each cylindrical portion 82, 84 has a male screw portion 60 of the lower portion 90 and a male screw portion 60 of the upper portion 88 at positions where the outer periphery overlaps the outer periphery of the upper portion 88 and the lower portion 90. Is partially provided on the outer peripheral surface.

In the faucet device of this embodiment, the attachment hole insertion portion 58 extending from the housing 40 is inserted downward into the attachment hole 34 of the counter 10, and the fixing nut 62 is inserted into the attachment hole insertion portion 58 below the counter 10. The faucet body 12 can be attached and fixed to the counter 10 by being screwed into the male screw portion 60 on the outer peripheral surface.
At this time, even when the fixing nut 62 is strongly screwed into the mounting hole insertion portion 58, the fixing nut 62 is screwed over the upper portion 88 and the lower portion 90 of the thinned portion of the mounting hole insertion portion 58 and tightened. In order to exert an applied force, the load faucet body 12 can be formed with high strength without the load being concentrated on the mounting hole insertion portion 58 in the thinned portion, specifically on the cylindrical portions 82 and 84 which are the remaining portions. It can be fixed to the counter 10.

  Further, in this embodiment, since the male screw portion 60 that connects the male screw portion 60 of the upper portion 88 and the male screw portion 60 of the lower portion 90 of the cylindrical portions 82 and 84 is provided, it is fixed to the male screw portion 60 in the mounting hole insertion portion 58. The threading allowance with the female threaded portion of the nut 62 is increased in the axial direction, the strength of the threaded portion is increased, and the fixing nut 62 is screwed into the male threaded portion 60 of the mounting hole inserting portion 58 from the lower end of the mounting hole inserting portion 58. Since the male screw portion 60 of the lower portion 90 and the male screw portion 60 of the upper portion 88 are continuous with each other at the male screw portions 60 of the cylindrical portions 82 and 84, the fixing nut 62 can be screwed smoothly. Can do.

When the fixing nut 62 is screwed in, the retaining members 100 and 102 are hidden inside the fixing nut 62, and the retaining members 100 and 102 are prevented from being detached by the fixing nut 62.
Although the embodiment of the present invention has been described in detail above, this is merely an example, and the present invention can be configured in various forms without departing from the spirit of the present invention.

1 is an overall view showing a faucet device according to an embodiment of the present invention attached to a counter. It is sectional drawing of the faucet body in the faucet device of the embodiment. It is a figure which shows the principal part of the connection state of piping and the faucet body in the embodiment. It is a figure which decomposes | disassembles and shows the faucet main body in the embodiment in each component. It is a perspective view which shows the housing and attachment hole insertion part in the embodiment with a fixing nut. It is the longitudinal cross-sectional view of FIG. 5, and the cross-sectional view of each principal part. It is a figure which shows the connection structure of each piping and attachment hole penetration part in the embodiment. It is a cross-sectional view of the main part in FIG. It is a figure which shows the relationship between each piping of FIG. 7, and a securing member. It is the figure which showed the attachment hole penetration part in the embodiment centering on the lower part. It is a figure which shows the accommodation state to the housing of the valve unit in the embodiment. It is a figure which shows an example of the conventional water faucet apparatus in the installation state to the counter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Counter 12 Water faucet body 30 Supply pipe 32 Outflow pipe 36 Peripheral wall part 38 Bottom part 40 Housing 42 Valve unit 58 Mounting hole insertion part 60 Male thread part 62 Fixing nut 66 Inlet 68 Outlet 70,72 Connection hole 74,80 Seal surface 78 O-ring 82,84 Cylindrical part 86 Carbide part 88 Upper part 90 Lower part

Claims (2)

A mounting hole insertion portion for inserting a mounting hole of a mounting base such as a counter from a housing that has a cylindrical peripheral wall portion and a bottom portion and is incorporated in a faucet body and accommodates a valve portion for controlling water discharge. It extends so that a fixing nut is screwed into a male screw portion on the outer peripheral surface of the mounting hole insertion portion on the back side of the mounting base, and the water faucet body is fixed to the mounting base. An inlet for allowing water to flow into the valve part and an outlet for discharging water from the valve part are provided, and a pipe is inserted and connected to the mounting hole insertion part from the side opposite to the valve part. In the faucet device provided with connection holes communicating with the inflow port and the outflow port, respectively, the housing and the mounting hole insertion portion are formed of an integrally molded product of resin, and the mounting hole insertion portion includes: The outer periphery of the pipe on the inner surface of the connection hole Forming a circular sealing surface that is elastically fitted through a sealing member at a predetermined position in the axial direction, and removing the other part by removing the other part of the cylinder in a cylindrical shape around the sealing surface The mounting hole insertion portion is configured in such a manner that the upper portion on the valve portion side and the lower portion on the opposite side are connected by a cylindrical portion which is a remaining portion, and further on the outer peripheral surfaces of the lower portion and the upper portion. The faucet device according to claim 1, wherein the male screw portion is formed, and the fixing nut is screwed over the lower and upper male screw portions.   2. The cylindrical portion according to claim 1, wherein the cylindrical portion is disposed at a position where the outer periphery partially overlaps the outer periphery of the upper portion and the lower portion when viewed in the axial direction of the mounting hole insertion portion, A faucet device characterized in that a male screw portion that is continuous with the male screw portion is formed at a portion overlapping the outer periphery of the upper portion and the lower portion of the outer periphery of the cylindrical portion.

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