JPH0913450A - Rotation regulating structure of discharge pipe in water tap - Google Patents

Abstract

PURPOSE: To constitute a mechanism to regulate rotation of a drain pipe at a low cost, and to easily and inexpensively change a rotation regulating angle of the drain pipe in a water tap in which a cylindrical part of a base end part of the drain pipe is fitted for assembly turnably in an outer circumferential surface of the drain pipe. CONSTITUTION: A stopper member 46 which is separate from a water tap body 28, of approximate ring-shape as a whole, and provided with an abutting part 122 projecting outwardly at the prescribed position in the circumferential direction is assembled to the water tap body 28 in a non-rotating manner, and a cylindrical part 20 of a drain pipe 14 is turnably fitted to the water tap body 28 from the outside of the stopper member 46. An abutted part 124 which is inwardly projecting is formed at the prescribed position in the circumferential direction of the cylindrical part 20, and the drain pipe 14 is regulated in rotation based on abutting effect of the abutted part 124 to the abutting part 122.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for regulating the rotation of a water discharge pipe in a faucet.

[0002]

2. Description of the Related Art As a type of faucet, a water discharge pipe having a cylindrical portion at its base end is slidably fitted to the circular outer peripheral surface of the faucet body at the inner peripheral surface of the cylindrical portion. There is a form in which the water discharge pipe can be rotated with respect to the faucet body within a certain angle range, and is used as a faucet for a kitchen or the like. FIG. 10 shows an example of this type of faucet. In FIG. 1A, reference numeral 200 denotes a water discharge pipe, which is provided with a cylindrical portion 202 at the base end of a tubular main body 201, and the inner peripheral surface of this cylindrical portion 202 is the outer periphery of the faucet main body 204. The surface is slidably fitted through a U packing 206 as a seal member.

The U packings 206 are arranged at two upper and lower positions in the vicinity of both axial end portions of the cylindrical portion 202.
A main body side water discharge passage 208 is formed between them on the outer peripheral surface side of the faucet main body 204. And the water discharge pipe 2
00 is the opening 21 on the base end side of the water discharge pipe water passage 210 inside.
It is fitted and assembled to the faucet body 204 in a state of communicating with the body side water discharge passage 208 via 2.

Here, the main body side water discharge passage 208 is the faucet main body 2
04 extends over a predetermined circumference of the outer peripheral surface of 04, and the water discharge pipe 200 is rotatable within a range in which the internal water discharge pipe water passage 210 is kept in communication with the main body side water discharge passage 208. There is.

Reference numeral 214 is a lever as an operating portion,
By operating the lever 214, the water and the hot water sent upward in FIG. 1A through the pair of water and hot water supply passages 216 are mixed in the mixing section (not shown), and the downstream delivery passage 218 is provided. Through the main body side water discharge passage 208,
The water discharge pipe water passage 210 inside the water discharge pipe 200 flowing through here
Leaked to

In this faucet, the faucet body 204 is entirely made of cast metal, and a semicircle as shown in FIG. 10 (B) is located at a portion lower than the upper end by a predetermined distance in the axial direction. -Shaped groove 220 is formed.

Both ends in the circumferential direction of the groove 220 are abutting portions 22.
4, and the contacted portion 2 is an inwardly projecting projection-shaped contact portion 2 formed integrally with the cylindrical portion 202 with respect to these contact portions 224.
By contacting 26, the cylindrical portion 202, that is, the rotating end of the water discharge pipe 200 is defined.

The abutting portion 224 and the abutted portion 226 are
The faucet body 204 has a vertical cutout 228 (FIG. 8C) formed in a portion from the upper end to the groove 220 of the faucet body 204. When the cylindrical portion 202 is assembled, the abutted portion 226 having an inward projection is provided with the cutout 228.
It is adapted to be fitted into the position of the groove 220 through.

[0009]

DISCLOSURE OF THE INVENTION Water discharge pipe 200
For example, some people want to rotate this within a range of up to 120 °, some people want to rotate it within a narrow angle of 90 °, or 180 °.
There are various people who want to rotate the discharge pipe 200 at a wide angle up to.

On the other hand, in the faucet of the above example, the rotation regulating structure for regulating the rotation range of the water discharge pipe 200, specifically, the semicircular groove 220 and the contact portions 224 at both ends in the circumferential direction are made of water. Since it is formed integrally with the faucet body 204, the faucet body 204
However, there is a problem that it is not possible to change only the rotation range of the water discharge pipe 200 without changing the above condition, and it is not possible to sufficiently meet the above request.

Further, in the case of the faucet of the above example, the water discharge pipe 20
Since the 0 rotation restriction structure is provided at a position above the mounting position of the seal member 206, that is, at the axially upper end of the cylindrical portion 202, the contact portion 224 and the contacted portion 226 contact each other. There is a problem that the rotation restriction force based on the contact does not work sufficiently effectively on the water discharge pipe 200.

[0012]

The rotation restricting structure of the water discharge pipe in the water faucet of the invention of the present application has been devised to solve such a problem. Thus, the rotation restricting structure of the invention of the present application rotatably fits the water discharge pipe having the cylindrical portion at the base end portion to the outer peripheral surface of the faucet body at the inner peripheral surface of the cylindrical portion, A rotation regulating structure of the water discharge pipe in a water faucet in which the water discharge pipe is assembled to the water faucet body, which is a member separate from the water faucet body, and has a substantially ring shape as a whole. A stopper member having an abutting portion that projects radially outwardly at a predetermined position on the outer peripheral surface in the circumferential direction is attached to the faucet body so that it cannot rotate relative to the faucet body, and then the faucet body is attached to the faucet body from the outside of the stopper member. On the other hand, the cylindrical portion of the water discharge pipe is rotatably fitted, and the inwardly projecting abutted portions are formed at predetermined positions in the circumferential direction on the cylindrical portion, and the abutted portions are abutted. The water discharge pipe is regulated to rotate based on the abutting action with the portion (claim 1).

According to another aspect of the present invention, in claim 1, a seal member for sealing watertightly between both end portions in the axial direction of the cylindrical portion or in the vicinity thereof is attached, and between the seal members. The stopper member is assembled to the faucet body at an axially intermediate portion, and the abutting portion and the abutted portion are formed at the intermediate portion position (claim 2).

According to still another aspect of the present invention, in claim 1 or 2, the stopper member is elastic and has a fitting opening at a predetermined position in the circumferential direction, and the stopper member is provided through the opening. It is characterized in that it is fitted and assembled to the faucet body in a direction perpendicular to the axis (Claim 3).

According to still another aspect of the present invention, in claim 1, 2 or 3, a mixing water passage is formed in the faucet body, and the stopper member is within a rotation angle range of the water discharge pipe. A communication port is provided which communicates the mixed water passage with the internal passage of the water discharge pipe and which penetrates the stopper member in the radial direction (claim 4).

[0016]

As described above, according to the first aspect of the present invention, a substantially ring-shaped stopper member which is separate from the faucet body is assembled to the faucet body, and the outer radial direction is formed on the stopper member. The contact portion of the direction, the rotation of the water discharge pipe is regulated by contact with the contacted portion formed in the cylindrical portion of the water discharge pipe so as to project inward. According to the present invention,
It is possible to easily and inexpensively change the rotation angle range of the water discharge pipe simply by previously preparing a plurality of stopper members having contact portions at different positions in the circumferential direction and replacing the stopper members. .

According to a second aspect of the present invention, the stopper member is assembled to the faucet body at an axially intermediate portion of the cylindrical portion. According to the present invention, the abutting portion of the stopper member and the cylindrical portion. The rotation restricting force based on the contact of the shaped portion with the contacted portion can be effectively applied to the cylindrical portion, and thus to the water discharge pipe.

According to a third aspect of the invention, the stopper member is
The present invention is configured to have a fitting opening at a predetermined location in the circumferential direction, and through which the stopper member is elastically fitted to the faucet body in a direction perpendicular to the axis and assembled. According to this, such a stopper member can be easily attached to or removed from the faucet body with one touch.

According to a fourth aspect of the present invention, the stopper member is provided with a communication port that connects the mixed water passage formed in the faucet body and the internal passage of the water discharge pipe within the rotation angle range of the water discharge pipe. According to the invention, even when the base end of the internal passage in the water discharge pipe is located at the intermediate position in the axial direction of the cylindrical portion in which the stopper member is arranged, the faucet body is passed through the communication port formed in the stopper member. The mixed water on the side can be satisfactorily discharged into the internal passage of the water discharge pipe within the entire rotation angle range of the water discharge pipe.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment in which the present invention is applied to a single lever type hot and cold water mixing faucet for a kitchen will be described in detail with reference to the drawings. In FIG. 3, 10 is a counter 12
It is a single-lever type hot and cold water mixing faucet installed above, and has a water discharge pipe 14. The water discharge pipe 14 is a tubular body 16
And a water discharge port 18 at the tip end and a cylindrical portion 20 at the base end. The cylindrical portion 20 is fitted into the faucet body 28 rotatably around its axis and assembled. (See FIG. 5).

Reference numeral 22 denotes an operating lever, which is rotated up and down in the P direction in FIG. 3 to perform water discharge, water stop and water discharge amount adjustment, and is also rotated left and right in the Q direction. The mixing ratio of hot water and water is adjusted with.

As shown in FIG. 4, the counter 12
A pair of supply pipes 24 for supplying hot water or water to the faucet body 28 (FIG. 5) is provided on the lower side. A check valve device 26 is provided on the supply pipes 24.

FIG. 5 shows a faucet 1 including a structure for assembling the water discharge pipe 14.
0 shows the internal structure of 0. In the figure, 28
Is a resin faucet body having a circular outer peripheral surface, and has a collar-shaped portion 30 protruding radially outward in an annular shape at the lower end portion,
The collar-shaped portion 30 is placed on a cylindrical pedestal member 34 provided upright on the counter 12 with an O-ring as a sealing member sandwiched between the collar-shaped portion 30 and the ring member 32.

Locking pawls 36 extend downward from the brim-shaped portion 30 at a plurality of positions in the circumferential direction, and the locking pawls 36 engage with a step portion formed on the outer peripheral surface of the upper end portion of the pedestal member 34. It has been stopped and prevented from slipping out. Reference numeral 38 denotes a lower decorative cover, and the ring member 32, the pedestal member 34, the locking claws 36, etc. are wrapped inside the lower decorative cover 38.

Inside the faucet body 28, a pair of hot water and water supply passages 40 are formed so as to vertically penetrate therethrough, and the supply pipe 24 is connected to each of them.
The faucet body 28 is also provided with a delivery passage 42 for delivering the mixed water of hot water and water downward, and a main body side water discharge passage 44 for guiding the mixed water from the delivery passage 42 to the internal water passage of the water discharge pipe 14. ing.

The mixed water flowing into the main body side water discharge passage 44 is
An internal passage 50 of the water discharge pipe 14 is provided through a communication port 48 formed in a stopper member 46 that defines the rotation range of the water discharge pipe 14.
Flows into. The communication port 48 formed in the stopper member 46 has a predetermined rotation angle range (angle θ (FIG. 8) of the water discharge pipe 14.
And FIG. 9)), the main body side water discharge passage 44 is formed at a position and a shape that communicate with the internal passage 50 of the water discharge pipe 14.

As shown in detail in FIG. 5, the resin cylindrical portion 20 at the base end portion of the water discharge pipe 14 is rotatable on the outer peripheral surface of the faucet body 28 on the inner peripheral surface and around the axis thereof. Is fitted to. A resin branch pipe 52 extending obliquely upward is integrally formed with the cylindrical portion 20, and a metal pipe member 54 is inserted into the branch pipe 52 and a predetermined illustration is omitted. A joint member connects them to each other. In this example, the pipe member 54 and the branch pipe 52 constitute the tubular main body 16 of the water discharge pipe 14.

An upper decorative cover 56 is disposed above the cylindrical portion 20 of the water discharge pipe 14. A fixed valve body 58 made of a ceramic disk is fixedly provided inside the upper decorative cover 56 at the upper end of the faucet body 28, and a movable valve body provided with a movable ceramic disk 60 on the upper surface side thereof. 62 is arranged, and the respective faces of the ceramic discs in the respective valve bodies 58, 62 are slidably and watertightly contacted.

The movable valve body 62 is formed with a downwardly opening mixing chamber 64, and the fixed valve body 58 is supplied with hot water or hot water from the hot and cold water supply passage 40 into the mixing chamber 64. An inflow port 66 for allowing the mixed water from the mixing chamber 64 and an outflow port 68 for allowing the mixed water from the mixing chamber 64 to flow out into the delivery passage 42 are provided, and the inflow port 66 and the outflow port 68 are the movable valve body 62. As they move, they are connected or cut off from each other.

A position-fixed cylindrical member 70 and a rotating member 72 rotatable with respect to the cylindrical member 70 are arranged inside the upper decorative cover 56, and the engaging arm is engaged with the rotating member 72. 74 is connected to a pin 76 so as to be vertically rotatable.

Here, the engagement arm 74 is a cap 7 formed integrally with the base end portion of the lever 22 as the operation portion.
8, the engaging arm 74 is vertically movable integrally with the lever 22.

The rotating member 72 rotates left and right integrally with the lever 22, so that as the lever 22 rotates up and down in the P direction in FIG. 3, the movable valve element 62 moves forward and backward in the left and right direction in FIG. 3, the movable valve body 62 rotates left and right on the fixed valve body 58 together with the rotating member 72.

The cylindrical portion 20 of the water discharge pipe 14 is shown in FIG.
As shown in FIG. 5, holding recesses 80 and 82 are formed on the inner peripheral surfaces of the upper side portion and the lower side portion of the main body side water discharge passage 44, and the U packing 84 as a sealing member is fitted therein. Is attached to and retained by.

Here, the upper holding recess 80 is shown in FIGS.
As also shown in FIG. 5, the inner peripheral surface of the cylindrical portion 20 is formed directly in the cylindrical portion 20 by recessing the inner peripheral surface thereof in the radial outward direction, and the lower holding concave portion 82 is formed in the cylindrical portion 20. The ring member 86 is indirectly formed on the lower side by fitting the ring member 86 into the radially outward stepped portion 85 formed on the inner peripheral surface.

Thus, the upper holding recess 80 is the cylindrical portion 2
0, specifically, an annular ring-shaped part 90 of the claw member 88 by the claw member 88 fitted in the upper end opening of the claw 0.
Is closed at its upper end, and the lower holding recess 82 is closed at its lower end by the flange 30 of the faucet body 28.

As shown in FIGS. 2 and 5, the faucet body 2
8, a recess 100 for fitting is formed inside the upper and lower U packing 84 mounting portions, that is, in the axially intermediate portion of the cylindrical portion 20 of the water discharge pipe 14, and is made of resin. A stopper member 46 having a substantially ring shape is fitted and assembled.

FIGS. 1A and 1B are perspective views showing the stopper member 46 from different angles. The stopper member 46 has a substantially ring shape as a whole, and an opening 102 for fitting is formed at a predetermined position in the circumferential direction over a predetermined angle range, and the stopper member 46 is attached to the faucet body 28 through the opening 102. On the other hand, they are fitted and assembled in a direction perpendicular to the axis (see FIG. 2). The stopper member 46 is also provided with three independent communication ports 48A, 48B, 48C along the circumferential direction. These communication ports 48A, 48B, 48C are provided in a form penetrating the stopper member 46 in the radial direction.

Further, the stopper member 46 has abutting portions 122 on its outer surface at both circumferential ends, that is, radially outward.
Are formed in a protruding shape. On the other hand, the cylindrical portion 20 of the water discharge pipe 14 is formed with a pair of inwardly projecting abutted portions 124 as clearly shown in FIG.
When the cylindrical portion 20, that is, the water discharge pipe 14 rotates in a certain angle range, the contacted portion 124 and the contact portion 122 are brought into contact with each other, whereby the rotating end of the water discharge pipe 14 is defined. ing.

As shown in FIGS. 1, 2, 7 and 8, guide grooves 104 are formed on the inner peripheral surface of the stopper member 46 from both ends in the circumferential direction to the communication ports 48B, 48C, and the delivery is performed. The mixed water delivered from the delivery port 106 (FIGS. 5 and 8) at the lower end of the passage 42 is guided to the communication port 48B or 48C through these guide grooves 104. As shown in FIGS. 1 and 2, inward projections 108 are formed at predetermined positions in the circumferential direction between the upper end portion and the lower end portion in the axial center of the stopper member 46, and the front surfaces of these projections 108 are water. It is brought into contact with the alignment surface 110 (FIGS. 2 and 8) formed on the plug body 28.

As shown in FIG. 7, the stopper member 46 also has a pair of boss portions 112 formed on the inner peripheral surface thereof, and the front surfaces of these boss portions 112 correspond to those formed on the faucet body 28. The abutting surface 116 of the boss 114 is in contact.

Fitting protrusions 118 are further formed on the boss portion 112 of the stopper member 46, and these fitting protrusions 118 are fitted into the fitting holes 120 of the boss portion 114 of the faucet body 28. It is said that.

FIGS. 8 and 9 are operation diagrams showing the flow of the mixed water due to the rotation of the communication ports 48A, 48B and 48C of the stopper member 46 and the water discharge pipe 14. In FIG. 8, the mixed water is sent out to the main body side water discharge passage 44 from the outlet 106.
It mainly flows into the internal passage 50 of the water discharge pipe 14 through the communication port 48A.

FIG. 9A shows the contact portion 122 of the stopper member 46 on the side of the communication port 48C and the contacted portion 124 of the water discharge pipe 14.
And are in contact with each other. In this state, the mixed water sent from the outlet 106 to the main body side water discharge passage 44 mainly passes through the guide groove 104 of the stopper member 46, and the communication port 4
It flows into the internal passage 50 of the water discharge pipe 14 via 8C.

Further, FIG. 9B shows a state in which the contact portion 122 on the communication port 48B side and the contacted portion 124 of the water discharge pipe 14 are in contact with each other. In this state, the mixed water mainly flows from the outlet 106 into the guide groove 104 and then into the internal passage 50 of the discharge pipe 14 through the communication port 48B.

In this example, the stopper member 46 is a separate body from the faucet body 28, and the contact portion 122 of the stopper member 46 and the contacted portion 124 of the water discharge pipe 14 are brought into contact with each other to discharge the water. It regulates the rotation of the water pipe 14. Therefore, in this example, the rotation angle range of the water discharge pipe 14 can be easily changed only by preparing a plurality of stopper members 46 having the contact portions 122 formed at different positions in the circumferential direction and exchanging them. You can

Further, since the stopper member 46 is assembled to the faucet body 28 at the axially intermediate portion of the cylindrical portion 20, the rotation restricting force of the stopper member 46 can be effectively applied to the water discharge pipe 14. it can. Further, since the stopper member 46 is elastically fitted to the faucet body 28, the stopper member 46 can be easily attached to and detached from the faucet body 28 with one touch.

Further, in this example, although the stopper member 46 is located in the axially intermediate portion of the cylindrical portion 20, that is, the stopper member 46 and the internal passage 50 of the main body portion 16 in the water discharge pipe 14 are provided. Although the base end is located at the intermediate position in the axial direction of the cylindrical portion 20 as well, in this example, the stopper member 46 is formed with the communication ports 48A, 48B, and 48C that radially penetrate therethrough. Therefore, the mixed water sent out from the outlet 106 satisfactorily flows into the internal passage 50 of the water discharge pipe 14 through the communication ports 48A, 48B, 48C of the stopper member 46 within the entire rotation angle range of the water discharge pipe 14. can do.

The embodiment of the present invention has been described in detail above, but this is merely an example, and the present invention can be configured in a form in which various modifications are made without departing from the spirit of the invention.

[Brief description of the drawings]

FIG. 1 is an enlarged perspective view of a stopper member in a water discharge pipe rotation restricting structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of the stopper member of FIG. 1 and a faucet body to which the stopper member is attached.

FIG. 3 is a perspective view showing a state in which the hot and cold water mixing faucet including the stopper member and the faucet body of FIGS. 1 and 2 is installed on a kitchen counter.

FIG. 4 is a view showing a state in which a supply pipe is connected to the water faucet of FIG.

5 is a view showing the cross-sectional structure of the water faucet of FIGS. 3 and 4 together with the rotation restricting structure of the water discharge pipe of the embodiment of the present invention including the stopper member of FIGS. 1 and 2. FIG.

FIG. 6 is an exploded perspective view showing the faucet of FIGS. 3 and 4 by disassembling it into respective parts.

FIG. 7 is a cross-sectional view showing the faucet of FIGS. 3 and 4 in an exploded manner.

FIG. 8 is a cross-sectional view showing a mounted state of the stopper member in the water faucet of FIGS. 3 and 4.

9 is a cross-sectional view showing the action of a stopper member in the water faucet of FIGS. 3 and 4. FIG.

FIG. 10 is a view showing a conventional rotation restriction structure of a water faucet.

[Explanation of symbols]

 14 Water Discharge Pipe 20 Cylindrical Part 28 Faucet Main Body 46 Stopper Member 48 Communication Port 84 U Packing 102 Opening 122 Abutting Part 124 Abutted Part

Claims (4)

[Claims] 1. A water discharge pipe having a cylindrical portion at a base end thereof is rotatably fitted to an outer peripheral surface of a water faucet main body at an inner peripheral surface of the cylindrical portion, whereby the water discharge pipe is attached to the water faucet. A structure for regulating the rotation of the water discharge pipe in a faucet in a form assembled to a main body, which is a member separate from the faucet main body, has a substantially ring shape as a whole, and is located at a predetermined position in the circumferential direction on the outer peripheral surface. A stopper member having an abutting portion that protrudes outward in the radial direction is attached to the faucet body so that it cannot rotate relative to the faucet body, and the cylindrical shape of the water discharge pipe with respect to the faucet body from the outside of the stopper member. Parts are rotatably fitted to each other, and inwardly projecting contacted parts are formed at predetermined positions in the circumferential direction on the cylindrical part, and based on the contacting action of these contacting parts A rotation restricting structure of a water discharge pipe in a faucet, characterized in that the rotation of the water discharge pipe is restricted. 2. The seal member according to claim 1, which is provided with a seal member that seals watertightly between both ends of the cylindrical portion in the axial direction or in the vicinity thereof, and an intermediate portion in the axial direction between the seal members. 2. The rotation restricting structure for a water discharge pipe in a faucet, wherein the stopper member is assembled to the faucet body, and the abutting portion and abutted portion are formed at the intermediate position. 3. The stopper member according to claim 1 or 2, wherein the stopper member has elasticity and has an opening for fitting at a predetermined position in the circumferential direction, and the stopper member is axially connected to the faucet body through the opening. A rotation restricting structure for a water discharge pipe in a faucet, which is fitted and assembled in a direction perpendicular to a heart. 4. The mixed water passage according to claim 1, wherein the water faucet body is formed with a mixed water passage, and the stopper member is provided with the mixed water passage within the rotation angle range of the water discharge pipe. A rotation restricting structure for a water discharge pipe in a water faucet, characterized in that a communication port is provided which communicates with an internal passage of the water discharge pipe and which penetrates the stopper member in a radial direction.