JPH062956A - Hot water supply tube for water heater - Google Patents

Abstract

(57) [Summary] [Purpose] To ensure that the shower head and pipe cover have a sense of unity. [Structure] A locking claw 18 provided on a shower head 11 at a downstream end of a bendable hot water supply pipe body 12 is locked from inside of a recess 21b of a pipe cover 20. Even if the shower head 11 is moved to an arbitrary position, the tube cover 20 does not separate from the shower head 11, and a sense of unity between the tube cover 20 and the shower head 11 can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water outlet pipe of a water heater having a shower head at the downstream end.

[0002]

2. Description of the Related Art In a water heater, a hot water outlet body is connected to the outlet of the water heater main body including a heat exchanger, burner, etc. A flexible portion molded in is provided, and a shower head is fixed to the downstream end of the flexible portion. In addition, recently, there is one in which the outside of the tap water pipe body is covered with a resin pipe cover. The purpose of such a tube cover is to provide a sense of unity with the body of the water heater, and in the past, the length of the tube cover made of resin to expand and contract was designed to be larger than the length of the hot water tube body. In some cases, the length of the pipe cover is compressed to cover the outside of the hot water pipe body, and the return force of the pipe cover surely covers the hot water pipe body between the hot water outlet and the shower head. (Fairy 4-14537).

[0003]

However, when a resin-made pipe cover is used, the full length of the tapping pipe main body can be covered immediately after the production due to the elasticity of the resin, but this is long-term. When considering the use, since the elasticity of the pipe cover decreases due to the aging of the resin, it is not always possible to fully cover the entire length of the tap pipe body, and if the tap pipe is bent repeatedly during use, the pipe will gradually disappear. The outlet pipe body is exposed at the end of the cover, especially,
If the hot water pipe body is exposed on the shower head side, there is a problem that the pipe cover and the shower head give a feeling of being separated from each other and the sense of unity of the hot water pipe is lowered.

It is an object of the present invention to provide a hot water outlet pipe in which the hot water outlet pipe main body is covered with a pipe cover and in which a sense of unity between the pipe cover and the shower head can be reliably obtained.

[0005]

According to the present invention, there is provided a bendable hot water outlet pipe main body having a shower head at a downstream end thereof, and a tubular pipe cover for covering the hot water outlet pipe main body. A hot water outlet pipe of a water heater connected to an outlet provided at a lower portion of the water heater, wherein the shower head and the pipe cover are formed with locking claws and recesses for locking each other. That is the technical means.

[0006]

In the present invention, the hot water pipe body is covered with the pipe cover,
The downstream end of the tube cover is fixed to the shower head side when the tube cover is moved toward the shower head side and the locking claws and the recesses formed in the tube cover and the shower head are locked. As a result, when the shower head is moved to an arbitrary position during use, even if the length of the pipe cover relative to the length of the discharge pipe body becomes relatively short due to the bending of the discharge pipe body, the pipe cover and shower head There is no gap between and.

[0007]

According to the present invention, when the tapping pipe is freely moved, no gap is created between the pipe cover and the shower head. Therefore, even if the pipe cover is deformed by use for a long period of time, You can surely get the experience.

[0008]

EXAMPLES Next, the present invention will be explained based on examples. A gas water heater 1 shown in FIG. 1 is provided with a burner and a heat exchanger inside a water heater cover 2, and a hot water outlet pipe 10 is connected to an outlet at a downstream end of the heat exchanger. When 3 is operated, a water supply valve (not shown) is opened, and the water supplied from the water supply pipe is automatically caused to flow out from the hot water supply pipe 10 via the heat exchanger to supply water. In addition, the water heater switch 4 at the time of water supply
Is operated, it has an automatic water supply function of igniting a burner to heat water by a heat exchanger to supply hot water.

The hot water outlet pipe 10 has a shower head 11 having a switching mechanism between a direct water flow and a shower water flow at the downstream end, and as shown in FIG. 2, a flexible hot water outlet pipe main body 12 and a hot water outlet pipe. The shower head 11 is formed so as to be bendable by a resin tube cover 20 that covers the outside of the main body 12, and the position of the shower head 11 can be freely moved. The shower head 11 is a shower head body 11A formed by combining a plurality of resin members.
And a plug 17 and an umbrella 19 described later.

At the downstream end of the hot water discharge pipe body 12, there is provided a metal pipe 14 which is plastically deformed so as to perform both the end treatment of the flexible molding portion 13 and the connection and fixing with the shower head 11. A groove 15 is formed on the outer periphery of the metal pipe 14, and an O-ring 16 for ensuring water tightness is arranged in the groove 15 when the hot water pipe body 12 and the shower head 11 are connected. . The O-ring 16 also serves as a locking member for locking a plug 17 for connecting the hot water pipe body 12 and the shower head body 11A.

The plug 17 forms a part of the shower head 11, and has a substantially cylindrical shape having a two-step structure. When connecting the hot water pipe body 12 and the shower head 11, the plug 17 is moved to the upstream side of the hot water pipe body 12 and then the O-ring 16 is fitted into the groove 15 so that the connecting portion 11a of the shower head body 11A is made of metal. After fitting on the outside of the pipe 14, the O-ring 16 is sandwiched by the connecting portion 11a and the step portion of the plug 17, and as shown in FIG. 3, the male screw and the female screw formed between the shower head 11 and the plug 17 are formed. Fit and fix.

On the outer peripheral portion of the upstream end of the plug 17, as shown in FIG. 4, locking claws 18 are radially formed in four directions. These locking claws 18 are for keeping the pipe cover 20 that covers the entire hot water discharge pipe body 12 at least toward the shower head 11 side.

On the other hand, the tube cover 20 is the shower head 1.
It is made of a thin film resin of the same color as that of 1, and can be flexibly deformed in accordance with the flexion deformation of the hot water pipe body 12, and has a relatively large width in order to prevent the shape at the time of bending from being disturbed. The large-diameter portion 21 set to and the small-diameter portion 22 set to a small width are alternately arranged, and the downstream end portion has a sense of unity corresponding to the shape of the shower head 11. To provide, these diameters are made progressively larger.

As shown in FIG. 5, the engaging claw 18 of the plug 17 is engaged with a recess 21b formed in a groove inside the large diameter portion 21a of the downstream end of the pipe cover 20. Then, the tube cover 20 is fixed so as not to separate from the shower head 11. In addition, in the shower head 11,
An umbrella 19 for covering the space between the shower head body 11A and the tube cover 20 is provided as a separate member, and the tube cover 20 and the tip of the shower head 11 have a similar color to provide a sense of unity.

In the gas water heater 1 having the above structure, when the user moves the shower head 11 to an arbitrary position, the hot water discharge pipe body 12 and the pipe cover 20 are bent. At this time, the downstream side of the pipe cover 20 is the shower head 11
Since it is locked from the inside by the locking claw 18 of the plug 17 provided in the shower head 11, the shower head 11 and the pipe cover 20 appear to be connected and the sense of unity is not impaired. Further, when the tap pipe 10 bends, the tap pipe body 1
Even if the length of the pipe cover 20 is shorter than the length of 2, the upstream end side of the pipe cover 20 is, as shown in FIG. Since the pipe cover 5 of No. 1 is covered, the user cannot see the state in which the length of the pipe cover 20 is insufficient, so there is no problem. Therefore, by setting the length of the pipe cover 20 to be substantially the same as or shorter than the length of the hot water pipe body 12, it is not necessary to compress the pipe cover 20 when assembling the hot water pipe 10, and the burden at the time of manufacturing is reduced. Is reduced. In the above embodiment, the recess 21b is formed in the pipe cover 20, and
Although the plug 17 is formed with the locking claw 18, the tube cover 20 may be formed with the locking claw to form the recess in the plug 17.

[Brief description of drawings]

FIG. 1 is a front view of a gas water heater using a hot water outlet pipe of the present invention.

FIG. 2 is an assembly diagram showing a downstream configuration of the tapping pipe of the present invention.

FIG. 3 is a partial cross-sectional view of a tap pipe showing a connection structure between the shower head and the tap pipe body in the embodiment of the present invention.

FIG. 4 is a perspective view showing a plug of the shower head in the embodiment of the present invention.

FIG. 5 is a partial cross-sectional view of a tap pipe showing a connection structure between the shower head and the pipe cover in the embodiment of the present invention.

[Explanation of symbols]

 1 Gas Water Heater (Water Heater) 10 Hot Water Pipe 11 Shower Head 12 Hot Water Pipe Main Body 18 Locking Claw 20 Pipe Cover 21b Recess

Claims (1)

[Claims] 1. A flow comprising a bendable hot water outlet pipe main body having a shower head at a downstream end, and a tubular pipe cover for covering the hot water outlet pipe main body, wherein the hot water outlet pipe main body is provided at a lower portion of a water heater. A hot water outlet pipe of a water heater connected to an outlet, wherein the shower head and the pipe cover are respectively formed with locking claws and recesses for locking each other. Hot water pipe.