JP2001311192A - Connection structure of tubular body in faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a hose guide from axially rattling on a guide pipe when the hose guide inserting the hose into the inside and slidably guiding the hose to be connected to the shower head of a shower faucet is connected to the guide pipe by the elastic fixing action of a fixing claw and a fixing hole. SOLUTION: An O-ring 40 for sealing is fixedly fittted in the axial direction at the male fitting face 70 of the hose guide 36 and brought into elastic contact with the female fitting face 72 of the guide pipe 26 to seal the fitting faces. An annular groove 74 elastically fitting to the O-ring and regulating the axial position is formed in the guide pipe 26. In this way, the hose guide 36 is prevented from rattling in the axial direction of the hose guide 36 by the fitting of the O-ring 40 and the annular groove.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure of a pipe in a water faucet suitable for a hose-housing water faucet in which a flexible hose connected to a water discharge head is housed in a state of being inserted into a guide tube. .

[0002]

2. Description of the Related Art FIG. 11 shows an example of a shower faucet widely used as a kitchen faucet or a faucet for shampooing and washing as an example of this type of hose-housing faucet.
In the figure, reference numeral 200 denotes a counter as a mounting base.
The faucet main body 202 and the water discharge section 204 are attached to the counter 200 at positions separated from each other.

[0003] A water and hot water supply pipe 2 is provided in a faucet body 202.
Reference numeral 06 is connected, and water and hot water are supplied to the faucet main body 202 through the supply pipes 206. Faucet body 20
2 mixes the supplied water and hot water at a predetermined ratio by operating the handle 208, and flows out the mixed water to the outside through the outflow pipe 210.

The water discharging section 204 has a water discharging head (shower head) 212 and a curved guide tube 216 for accommodating a flexible hose 214 connected to the water discharging head 212 in an inserted state. The water discharge head 212 has a water discharge port 218 on the lower surface, and further includes a switching operation unit 220 on the front surface for switching the water discharge from the water discharge port 218 from shower water discharge to rectified water discharge or vice versa. The guide tube 216 can be pulled out. In addition, 222 is a shower head 212 and a guide tube 2.
A slide tube that moves up and down together with 16, and is slidably inserted into a mounting tube 224 having an external thread on the outer peripheral surface.

In the shower faucet of this example, the water discharge head 2
A short tube-shaped hose guide that guides the slide by inserting the hose 214 inside when the 12 is pulled out and used is attached to the distal end of the guide tube 216 that is its main tube. Conventionally, various structures have been used as a structure for attaching and fixing the hose guide to the guide tube 216. One of the structures is to provide an elastic piece on the hose guide and provide a locking claw therewith. A structure has been proposed in which a locking hole is provided on the side of the guide tube 216 so that the locking claw and the locking hole are elastically locked, and the hose guide is attached and fixed to the guide tube 216.

FIG. 12 to FIG. 14 show one example (Japanese Patent Laid-Open No. Hei 10-147996). In the illustrated example, a guide tube 216 extends from the faucet body 202, and a hose 214 connected to the water discharge head 212 is accommodated therein. In the drawing, reference numeral 226 denotes a slide when the hose 214 is pulled out. It is a short tube (circular tube in this example) hose guide that performs a dynamic guide.

As shown in FIG. 14, the hose guide 226 is provided with an elastic piece 228, and the elastic piece 228 is provided with a locking claw 230. Locking hole 23 provided on the side 216
The hose guide 226 is attached and fixed to the guide tube 216 by elastically engaging with the guide tube 216.

[0008]

However, in the case of the faucet shown here, the elastic piece 228 extends in the axial direction, and the locking claw 230 is engaged with the locking hole 232 by rotating about the base thereof. The locking claw 230 is inserted into the locking hole 23 to prevent the hose guide 226 from coming off.
When the hose guide 226 is mounted in a state where the hose is locked to the hook 2, a gap corresponding to a clearance for securing the rotation of the elastic arm 228 between the locking claw 230 and the locking hole 232 in the mounted state. Inevitably occurs. If such a gap exists, the hose guide 226 will rattle in the guide tube 216 in the axial direction.

In the above, the elastic piece 228 is attached to the hose guide 226.
The locking claw 230 is engaged in the locking hole 232 by utilizing the elastic deformation of the elastic piece 228, and the hose guide 22 is
6 is inevitably caused when assembling the guide tube 216, but without using such an elastic piece 228,
Even when the hose guide 226 as one tube is assembled to the guide tube 216 as the other tube by other means, the hose guide 226 is not attached to the guide tube 216 due to dimensional tolerances or errors in the assembly. Jitter may occur in the direction.

Furthermore, although the hose guide 226 and the guide tube 216 are taken as an example of the first tube and the second tube here, the same problem arises as a water channel forming member in a faucet or its guide tube. This is a problem that may occur when the pipes and the pipes are connected to each other in a fitted state.

[0011]

SUMMARY OF THE INVENTION The connecting structure of the tube in the faucet of the present invention has been devised to solve such a problem. According to the first aspect of the present invention, there is provided a connection structure for connecting a water passage forming member of a water faucet or a pipe as a guide tube of the water passage forming member to each other in a fitted state. An elastic ring for sealing is mounted on the fitting surface of the tubular body in a fixed state in the axial direction, and the elastic ring is brought into elastic contact with the fitting surface of the other second tubular body to perform sealing. A fitting recess is formed in the second tubular body to elastically fit into the elastic ring to regulate the axial position, and the fitting of the elastic ring and the fitting recess causes the pair of tubular bodies to move relative to each other in the axial direction. It is characterized in that movement is restricted.

According to a second aspect of the present invention, the first
An elastic piece extending in the axial direction is provided on one of the second tubular body and the locking claw is provided on the elastic piece, and a locking hole corresponding to the elastic claw is provided on the other, and the locking claw is provided. The first tube and the second tube are connected by elastically locking the and the locking hole, and a sealing surface is fitted to the fitting surface of one of the first tubes. The elastic ring is mounted in a fixed state in the axial direction, and the elastic ring is elastically brought into contact with the fitting surface of the other second tubular body to perform sealing, and the second tubular body is attached to the elastic ring. Forming a fitting recess that elastically fits to regulate the axial position, and restricts the relative movement in the axial direction of the pair of tubes by fitting the elastic ring and the fitting recess. Features.

According to a third aspect of the present invention, in any one of the first and second aspects, one of the first and second tubes slides and guides a flexible hose connected to a water discharge head. It is a short tube-shaped hose guide, and the other tube is a guide tube that holds the hose guide at a distal end and stores the hose in an inserted state.

According to a fourth aspect of the present invention, in any one of the first and second aspects, one of the first and second pipes is a connecting member fixed to the water discharge head, and the other is a connecting member. It is a guide tube for storing a hose connected to the water discharge head in an inserted state.

[0015]

As described above, according to the connection structure of the first aspect, an elastic ring is axially fixed to the fitting surface of one of the first tubes, and the elastic ring is attached to the other first tube. The sealing is performed by making the fitting surface of the second tube elastically contact with the fitting surface of the second tube, and the fitting recess provided in the second tube and the elastic ring are fitted to each other so that the relative movement of the pair of tubes in the axial direction is reduced. According to the connecting structure of the first aspect, the elastic ring can seal the space between the pair of pipes satisfactorily and water-tightly. The relative movement of the pair of tubes in the axial direction can be regulated by the fitting of the elastic ring and the fitting recess, and the pair of tubes can be prevented from rattling in the axial direction. . Here, the fitting recess can be formed as an annular groove continuous in the circumferential direction.

A second aspect of the present invention is to provide an axially-elastic piece on one of the first and second pipes to be connected to each other, the elastically-variable locking claw and the other locking hole. When the first tube and the second tube are connected, the relative movement in the axial direction is restricted by the fitting between the elastic ring and the fitting recess as described above. In this case, the gap between the locking claw and the locking hole inevitably generated to secure the elastic deformation of the elastic claw causes the first tube and the second tube to move in the axial direction. The problem of rattling can be effectively solved.

According to the first and second aspects of the present invention, a short tube-shaped hose guide for slidingly guiding a flexible hose connected to a water discharge head and a guide tube for accommodating the hose in an inserted state are provided. It is preferable to apply to (claim 3). Alternatively, the present invention is suitably applied to a connection between a connecting member fixedly provided on the water discharge head and a guide tube (claim 4).

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1 to 5 show an example of a hose storage type faucet.
Shown here is an example of a shower faucet widely used as a kitchen faucet or a hair faucet faucet.
Numeral 0 denotes a counter as an attachment base, and the faucet main body 12 and the water discharge section 14 are attached and fixed to the counter 10 at positions separated from each other.

The faucet body 12 has a supply pipe 16 for water and hot water.
Are connected, and water and hot water are supplied to the faucet body 12 through the supply pipes 16. The faucet body 12 mixes the supplied water and hot water at a predetermined ratio by rotating the handle 18, and flows out the mixed water to the outside through the outflow pipe 20. The mixed water flowing out through the outflow pipe 20 is guided to a water discharge head (shower head) 24 described later through a flexible hose 22 connected thereto.

The water discharge section 14 has a water discharge head 24 and a curved guide pipe (second pipe) 26 for accommodating the hose 22 connected to the water discharge head 24 in an inserted state. A slide tube 28 is connected to the guide tube 26 so as to move up and down integrally.
It is slid and guided by a mounting tube 30 having an external thread on the outer peripheral surface.

The water discharge head 24 has a water discharge port 32 on the lower surface, and a switching operation section 34 for switching the water discharge from the water discharge port 32 from shower water discharge to rectified water discharge or vice versa on the front surface thereof. And can be pulled out from the guide tube 26 together with the hose 22.

As shown in FIGS. 2 and 3, a short tube (circular tube in this example) hose guide (first tube) 36 is attached to the distal end of the guide tube 26. The hose guide 36 allows the hose 22 to pass therethrough,
The slide guide 2 performs sliding guide when it is pulled out from the guide tube 26 together with the water discharge head 24, and has a male fitting portion 38 protruding from the guide tube 26.

On the other hand, a female fitting portion 42 is formed in the water discharging head 24, and by fitting the female fitting portion 42 to the male fitting portion 38, the water discharging head 24 is connected to the hose guide 36 by the guide tube 26. Is to be held through.

At the rear end of the hose guide 36, a tubular draining spacer 43 is fitted in a fitted state. This draining spacer 43 has a cylindrical portion 44 and a flange portion 46 as clearly shown in FIG.
Are fitted on the inner surface of the hose guide 36.

Here, the cylindrical portion 4 of the draining spacer 43
The inner diameter of the hose 4 is smaller than the inner diameter of the hose guide 36, and drains water adhering to the outer surface of the hose 22. In this example, the draining spacer 43 has a half-split configuration, and these are combined to form one draining spacer 43.

The hose guide 36 is a member made of resin, and has an elastic piece 48 at the rear half in the axial direction. A locking claw 50 is provided at the tip of the elastic piece 48, and the locking claw 50 is elastically locked in a locking hole 52 formed at a corresponding position on the guide tube 26 side. The hose guide 36 is retained from the guide tube 26. Here, the elastic piece 48 is formed to extend in the direction in which the hose 22 is pulled out, that is, in the direction in which the hose guide 36 is pulled out. More specifically, the elastic piece 48 is formed so as to extend from the root thereof so that the tip is directed in the direction of extraction.

When the hose guide 36 is mounted on the guide tube 26, the elastic piece 48 behaves as follows. That is, when the rear half of the hose guide 36 is inserted into the guide tube 26, the elastic piece 48 is elastically deformed so as to rotate upward in the figure around its base as shown by the broken line in FIG. When the locking claw 50 reaches a position corresponding to the locking hole 52, the locking claw 50 is rotated downward in the drawing by its own elastic force to engage the locking claw 50 in the locking hole 52.

At this time, an axial gap C is necessarily generated between the locking claw 50 and the locking hole 52. Therefore, when the hose guide 36 is attached to the guide tube 26 only by the locking operation of the locking claw 50 and the locking hole 52, the gap between the hose guide 36 and the guide tube 26 is set in the axial direction. Rattling occurs.

In this embodiment, rattling is prevented by the sealing O-ring (elastic ring) 40 mounted on the hose guide 36 and the annular groove (fitting recess) 74 provided on the guide tube 26 side. I am trying to do it. That is, as shown in FIG.
An O-ring mounting groove is formed in a portion 0, and an O-ring 40 is mounted in the axially fixed state therein. When the hose guide 36 is inserted into the guide tube 26, the O-ring 40 is formed. Makes elastic contact with the female fitting surface 72 of the guide tube 26, so that the hose guide 36 and the guide tube 26
And water tightly sealed.

Here, the O-ring 40 prevents water from entering the inner part of the guide tube 26 when water enters between the hose guide 38 and the opening at the left end of the guide tube 26 in the drawing. It is.

On the other hand, the female fitting surface 72 of the guide tube 26 has O
An annular groove (fitting recess) 74 corresponding to the ring 40 is formed, and the O-ring 40 is elastically fitted therein. Thus, as shown in FIG.
As a result, the relative positions of the hose guides 36 in the axial direction are determined based on the fitting of the O-rings 40 and the fitting grooves 74, and the hooks of the elastic pieces 48 are locked. Despite the gap C between the locking hole 50 and the locking hole 52, the hose guide 36 relatively moves in the direction in which it comes off from the guide tube 26, that is, when the hose guide 36 is pulled out.
The hose guide 36 is prevented from rattling against the guide tube 26 despite the pulling force acting on the guide tube 26.

Next, FIGS. 7 to 10 show another example of a hose storage type faucet, which is an example of a faucet capable of easily discharging water upwardly and capable of discharging water upward. Reference numeral 56 denotes a water discharge head which constitutes the tip of the water discharge section 54.

Here, the water discharge head 56 is rotatable up and down with respect to the guide tube 26. That is, the water outlet 32 can be directed upward and water can be discharged upward from the water outlet 32. In FIG. 7, other components are the same as those of the faucet of FIG. 1, and only the reference numerals are shown and the detailed description is omitted.

As shown in FIGS. 8, 9 and 10,
A tubular connecting member (a circular tube in this example) is used for the water discharging head 56.
58 is fixedly provided.

The water discharge head 56 is provided with a fitting portion rotatably fitted into the socket-like connection member 58, and the water discharge head 56 rotates with respect to the connection member 58, that is, with respect to the guide tube 26. It is possible.

The connecting member (first tube) 58 has a small-diameter tube portion 60. The small-diameter tube portion 60 is fitted into the hose 22.
And are fixedly connected.

An elastic piece 48 is fixedly provided on the connecting member 58. This elastic piece 48 has a locking claw 5
The connecting member 58 is attached and fixed to the guide tube 26 by elastically locking the locking claw 50 in the locking hole 52 on the guide tube (second tube) 26 side. Have been. That is, the water discharge head 56 is connected and fixed to the guide tube 26. Here, the elastic piece 48 is formed so as to extend in the direction in which the elastic piece 48 is extracted from the guide tube 26, and this point is the same as in the above-described embodiment.

The elastic piece 48 is provided on an elastic clip 62 that is separate from the main body of the connecting member 58. When the elastic clip 62 is assembled to the main body of the connecting member 58, the elastic piece 48 is connected to the connecting member 58. 58 fixedly provided.

The elastic clip 62 and the connecting member 58 can be separated from the body of the connecting member 58 by a disassembling operation. The connecting member 58 and the water discharge head 56 can also be separated from each other by a disassembling operation.

As shown in FIG. 9, also in this embodiment, the O-ring 40 is axially fixed in the annular O-ring mounting groove formed in the male fitting surface 70 of the connecting member 58,
The O-ring 40 is elastically brought into contact with the female fitting surface 72 of the guide tube 26, so that the connecting member 58 and the guide tube 26
Is sealed watertight.

An annular groove (fitting recess) 74 is formed in the female fitting surface 72 of the guide tube 26, and the annular groove 7
The 4 and the O-ring 40 are elastically fitted to each other, whereby the connection member 58, that is, the water discharge head 56 and the guide tube 26 are axially restricted.

Accordingly, also in this example, the water discharge head 56,
The connecting member 58 is directly connected to the guide tube 26 by the locking claw 5.
The engagement between the O-ring 40 and the annular groove 74 is made despite the fact that a gap C is generated between the locking claw 50 and the locking hole 52. Based on
The water discharge head 56 is prevented from rattling in the axial direction with respect to the guide tube 26.

The embodiment of the present invention has been described in detail above, but this is merely an example. For example, in the first embodiment, the hose guide 36 has been described as the first tube and the guide tube 26 has been described as the second tube. However, in the present invention, the guide tube 26 is the first tube, and Second hose guide 36
An elastic ring such as an O-ring is provided in the first tube body in an axially fixed state as the first tube body, and a fitting concave portion such as an annular groove fitted in the second tube body is formed on the second tube side. It is also possible. Further, also in the second embodiment, the guide tube 26 is used as a first tube, the connecting member 58 is used as a second tube, and an O-ring is provided on the side of the first tube. It is also possible to provide a fitting recess such as an annular groove on the side of the body.

Further, the above-mentioned faucet is merely an example of the faucet of the present invention, and the present invention can be applied to other various forms of faucet.
It can be configured in a form in which various changes are made without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1 is a view showing an example of a hose storage type faucet including a connection structure according to one embodiment of the present invention.

FIG. 2 is a diagram showing a connection structure of the same embodiment together with a water discharge head and a peripheral portion thereof.

FIG. 3 is a diagram illustrating a water discharge head having a connection structure of the same embodiment and a peripheral portion thereof in a state where the water discharge head is pulled out.

FIG. 4 is a sectional view showing the connection structure of the same embodiment disassembled into respective members.

FIG. 5 is a perspective view showing the connection structure of the same embodiment disassembled into respective members and a perspective view showing a hose guide alone.

FIG. 6 is an operation explanatory view of the connection structure of the same embodiment.

FIG. 7 is a view showing an example of a hose-housing type water tap including a connection structure according to another embodiment of the present invention.

FIG. 8 is a sectional view of a main part showing the connection structure of the same embodiment together with a water discharge head and a guide tube.

FIG. 9 is a cross-sectional view showing the connection structure of the same embodiment in a state where a water discharge head and a guide tube are separated.

FIG. 10 is a perspective view showing the connection structure of the same embodiment with a water discharge head and a guide tube separated.

FIG. 11 is a view showing an example of a conventional hose-housing type water tap.

FIG. 12 is a view showing an example of a hose storage type faucet different from FIG. 11;

13 is a view showing a state in which the connecting structure of the tube in the faucet of FIG. 12 is disassembled into respective members.

FIG. 14 is an exploded perspective view showing the hose guide of FIG. 13 and its peripheral portion.

[Explanation of symbols]

 12 faucet main body 24, 56 water discharge head 26 guide tube (second tube) 36 hose guide (first tube) 40 O-ring 48 elastic piece 50 locking claw 52 locking hole 58 connecting member (first Tube)

Claims (4)

[Claims] 1. A connection structure for connecting a pipe as a water channel forming member or a guide tube of the water channel forming member in a water faucet to each other in a fitted state, wherein one of the first pipe bodies is fitted. An elastic ring for sealing is mounted on the surface in an axially fixed state, and the elastic ring is
Sealing is performed by elastically contacting the fitting surface of the tubular body, and a fitting recess is formed in the second tubular body to elastically fit into the elastic ring to regulate the axial position. A tube connecting structure for a water faucet, wherein a relative movement of a pair of tubes in an axial direction is regulated by fitting of a ring and a fitting recess. 2. An elastic piece extending in the axial direction is provided on one of the first and second pipes to be connected to each other, and a locking claw is provided on the elastic piece, and the other corresponds to the elastic claw. A locking hole is provided, and the first and second pipes are connected by elastically locking the locking claw and the locking hole. An elastic ring for sealing is axially fixed to the fitting surface of the tubular body, and the elastic ring is brought into elastic contact with the fitting surface of the other second tubular body to perform sealing. A fitting recess is formed in the second tubular body to elastically fit into the elastic ring to regulate the axial position, and the fitting between the elastic ring and the fitting recess forms a pair of tubular bodies in the axial direction. A connecting structure of a pipe in a faucet, wherein relative movement is restricted. 3. A short-tube hose guide according to claim 1, wherein one of said first and second tubes slides and guides a flexible hose connected to a water discharge head. A connection structure for a water faucet, wherein the other pipe is a guide pipe that holds the hose guide at a distal end thereof and stores the hose in an inserted state. 4. The water discharge head according to claim 1, wherein one of the first and second pipes is a connection member fixed to the water discharge head, and the other is connected to the water discharge head. A connection structure of a pipe in a faucet, which is a guide pipe for storing a drawn hose in an inserted state.