JPH0421886Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a grip structure for a water discharge pipe used in faucets, particularly hot and cold water mixing faucets, hot water only faucets, and the like.

[Prior Art] When a hot water mixing faucet or the like continuously discharges hot water alone, the tip of the water discharge pipe made of a metal material may become so hot that it cannot be touched by hand. To deal with this, conventionally, as shown in FIG.
A gripping cap 2 was attached to the tip 1a of the holder. The gripping cap 2 is made of a heat insulating material such as ABS resin, and has a water spout 2a formed on the outer periphery near the tip. At the spout 2a,
A rectifier 4 is attached. Note that some water discharge pipes used in water-only faucets are crowned with grip caps for their appearance.

Conventionally, in order to attach the gripping cap 2 to the water spout 1, a male thread 1b is carved into the outer circumferential surface of the distal end of the water spout 1, and the grip cap 2 is screwed onto the male thread 1b. In this case, if a female screw is directly carved into the inner surface of the rear end of the gripping cap 2 and screwed onto the water discharge pipe 1, the female screw may be damaged during installation or use due to insufficient strength. Therefore, a brass collar 3 is integrally embedded in the inner surface of the rear end of the gripping cap 2 by insert molding, and a female screw is carved into the inner peripheral surface of the collar 3. It was screwed together with the water discharge pipe 1.
Incidentally, the male screw 1b of the spouting pipe 1 was coated with adhesive in advance before being screwed together to prevent the grip cap 2 from loosening and to fix the directionality of the spout 2a.

[Problems to be Solved by the Invention] In the conventional gripping cap 2, the main body portion made of resin and the collar 3 made of metal have largely different coefficients of thermal expansion. Therefore, thermal stress is concentrated at the boundary between the main body and the collar 3 due to repeated cooling and heating cycles that occur between when hot water is discharged and at other times, such as when water is discharged or when it is not in use. ,
A crack had appeared. Furthermore, the development of residual stress contained within the resin material during insert molding was considered to be a factor in the occurrence of the cracks. When cracks occur in the gripping cap 2 in this manner, water scale and the like penetrate into the cracks, not only causing the appearance to deteriorate, but also ultimately leading to the gripping cap 2 being damaged or falling off.

The present invention has been made in view of the above-mentioned circumstances, and aims to provide a new grip structure for a water discharge pipe (hereinafter referred to as the "proposed structure") that does not cause cracks in the grip cap. purpose.

[Means for solving the problem] The gist of the proposed structure is that in the structure of the gripping part of the water spout, the grip cap with the water spout opening on the outer periphery is attached to the tip of the water pipe. A joint is formed near the tip, and an attachment part is formed inside the gripping cap to face the joint of the water spout, and a screw is attached to the attachment part at a portion that can be inserted from the water spout, The joint part of the water discharge pipe and the attachment part of the gripping cap are connected with screws.

[Function] The spout pipe and the gripping cap are firmly connected because the joint part of the spout pipe and the attachment part of the gripping cap are joined with screws, and large thermal stress is not generated between them. There isn't. Therefore, the gripping cap has the ability to withstand repeated cooling and heating cycles in the water pipe.
No thermal stress concentration occurs. Of course, since the gripping cap does not use a conventional collar and is certainly not insert molded, there is no residual stress that could cause cracks. Since the screw is attached to a portion of the attachment part that can be inserted from the water spout, it can be easily inserted from the outside of the gripping cap through the water spout.

[Description of Embodiments] The present invention will be described below based on drawings showing embodiments thereof.

(First Embodiment) FIGS. 1 and 2 show a first embodiment of the proposed structure. The water discharge pipe 11 has a pipe main body portion 11a.
The joint part 11 is connected by the joint piece 11b protruding from the tip of the
c is formed. The joining piece 11b is formed by cutting out a part of the tube body 11a, or by welding a separately molded piece to the tube body 11a. The gripping cap 12 is molded from a heat insulating material such as ABS resin, and has a water spout 12a opened at its outer periphery. The gripping cap 12 has a water discharge pipe 1 inside thereof.
An attaching portion 12c is formed opposite to the joint portion 11c of No. 1. The attachment portion 12c is formed integrally with the cylinder main body 12b, or by joining a separately molded piece to the cylinder main body 12b with screws (not shown) or the like. A screw 13 is attached to the attachment portion 12c at a portion that can be inserted from the spout 12a. The screw 13 connects the joint part 11c of the water discharge pipe 11 and the attachment part 1.
2c is joined. As for the joining structure using the screw 13, the screw 13 inserted into the screw insertion hole 12d of the attachment part 12c is screwed onto the joint part 11c of the water discharge pipe 11, or, although not shown, the attachment part 12c
An appropriate structure is selected, such as pressing the joint part 11c of the water discharge pipe 11 with the tip of the screw 13 screwed into the water pipe 11. A seal ring 14 is interposed between the pipe main body 11a of the water discharge pipe 11 and the crowning inner circumferential surface 12e of the gripping cap 12, if necessary. Gripping cap 1
The water outlet 12a of No. 2 is equipped with a rectifier 4 as necessary.
(See Figure 7) is attached.

To assemble the proposed structure, the water discharge pipe 11
At the same time, the screw 13 inserted into the spout 12a of the gripping cap 12 is inserted.
Attach the screw to the mounting part 12c, and use the tip of a screwdriver (not shown) inserted from the spout 12a to tighten the screw 13.
Do it carefully.

(Second Embodiment) FIGS. 3 and 4 show a second embodiment of the proposed structure. The water discharge pipe 21 has a pipe main body portion 21a.
A joint portion 21c is recessed in the holding cap 22, and a water passage hole 21d is formed in a portion of the grip cap 22 facing the water spout 22a. The water hole 21d has an inner diameter that allows the tip of a screwdriver (not shown) to be inserted therein. The gripping cap 22 has an attachment portion 22c protruding from inside the tube main body portion 21a of the water discharge tube 21. The attachment portion 22C of the gripping cap 22 has a screw insertion hole 22 at a portion where it can be inserted from the spout 22a.
d is drilled. Screw 13 is the spout, 22
It is inserted into the screw insertion hole 22d via the screw hole 22d, and is tightened by a female thread formed in the joint 21c of the water discharge pipe 21. The ring 24 fitted near the tip of the water spout 21 is for stably holding the tip of the water spout 21 on the crowning inner circumferential surface 22e of the gripping cap, and is provided as necessary. be.

(Third Embodiment) FIGS. 5 and 6 show a third embodiment of the proposed structure. The difference between this embodiment and the second embodiment is that the distal end of the water discharge pipe 31 is divided into an upper joint piece 31b and a lower curved piece 31f by notches 31g, 31g formed from the distal end. At the same time, both ends of the attachment portion 32c protruding inside the gripping cap 32 are joined to the inner peripheral surface 32e of the crown attachment. The screw 13 is inserted into the screw insertion hole 32d via the spout 32a, and is tightened by a female thread formed in the joint 31c of the spout pipe 31.

[Effects of the Present Invention] As detailed above, the structure of the present invention has the following practical effects.

The gripping cap does not develop cracks due to the absence of thermal stress concentrations. the result,
The gripping cap is not inferior in appearance and is not damaged.

The gripping cap and discharge pipe have a screw-preventing structure, so there is no need to apply adhesive, which was previously required. Compared to the conventional manufacturing process, which requires time for the adhesive to harden,
It is extremely simple and can be manufactured in a short time. Moreover, by not using adhesive,
It also becomes possible to replace the gripping cap.

The screw that connects the gripping cap and the water discharge pipe is
Mounted inside the gripping cap. As a result, the gripping cap has a structure that is clean and easy to clean without exposing the screw heads that would cause water scale or cleaning to become difficult.

There are no exposed screws that connect the gripping cap and the water discharge pipe. As a result, the external design of the gripping cap is not restricted by screws and can be freely designed.

Since the screw is attached to a part of the attachment part that can be attached from the water spout, it can be easily attached from the outside of the gripping cap via the water spout. As a result, with the structure of the present invention, the gripping cap can be attached easily and quickly.

[Brief explanation of the drawing]

1 to 6 show embodiments of the proposed structure, in which FIG. 1 is a vertical cross-sectional view of the first embodiment, FIG. 2 is a cross-sectional view taken along the line -- in FIG. 4 is a longitudinal sectional view of the second embodiment, FIG. 4 is a sectional view taken along the - line in FIG. 3, FIG. 5 is a longitudinal sectional view of the third embodiment, FIG. The figure is a partially cutaway side view of a conventional grip structure. 11, 21, 31... Water pipe, 12, 22, 3
2...grip cap, 13...screw.

Claims (1)

[Scope of utility model registration request] In the grip structure of the water spout pipe, in which a grip cap with a water spout opening on the outer periphery is attached to the tip of the water spout, a joint is formed near the tip of the water spout, and the joint of the water spout is formed inside the grip cap. A mounting part is formed opposite to the water spout, and a screw is attached to the mounting part at a part that can be inserted from the water spout, and the joint part of the water spout pipe and the mounting part of the gripping cap are joined with the screw. A grip structure for a water discharge pipe characterized by: