JP2594236Y2 - Connection cover - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a method for connecting a hot water supply pipe used around water to a connector such as a hot water supply apparatus.
The present invention relates to a connecting portion cover that covers a connecting portion between a connection fitting and the pipe to prevent corrosion of the pipe due to splashing of water mixed with a detergent or a bleaching agent.

[0002] More specifically, a bellows tube in which grooves are formed at regular intervals in the longitudinal direction and along the circumferential direction on the outer circumferential surface of the bellows tube is provided with a soft coating film made of resin on the outer circumferential surface. And a connecting portion cover for covering the cladding tube and the connection fitting at a connection point between the cladding tube and a connection fitting for connecting the coating tube to a connection object.

[0003]

2. Description of the Related Art Conventionally, hot water supply pipes have been implemented using bellows pipes having grooves formed in the outer peripheral surface at regular intervals along the longitudinal direction and along the peripheral direction as they are. When arranged around water, there is a problem that water containing detergent or bleaching agent is applied to the bellows tube and causes corrosion. Therefore, in order to solve this problem and improve the appearance and the heat retention, a cladding tube provided with a soft coating film made of resin on the bellows tube has come to be used for a hot water supply pipe.

[0004] The structure of the connecting portion between the connecting member such as a hot water supply device and the above-mentioned covering tube is represented by a bellows tube 7 and a coating film 8 for the connecting member 2 as shown in FIG. The flange 1a provided at the end of the cladding tube 1 is abutted via the packing 5,
A female screw 3a screwed into the male screw 2b of the connection 2 is provided on the inner peripheral surface, and the connection fitting 3 having a small diameter portion 3b abutting against the flange 1a from the outside is screwed. Connected.

In the past, there has been no connecting portion cover that covers the connecting portion between the connecting fitting 3 and the cladding tube 1.

[0006]

According to the structure of the conventional connecting portion described above, as shown in FIG. 3, the end of the cladding tube 1 is coated with the coating film 8 along with the processing of the flange portion 1a. The bellows tube 7 is exposed in a part of the cladding tube 1 in a state where it is removed and connected.

If the exposed portion is exposed to water mixed with, for example, a detergent or a bleaching agent, the cladding tube 1 is corroded, and the water penetrates between the bellows tube 7 and the coating film 8. Then, there is a problem that the corrosion range of the cladding tube 1 further increases.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a connecting portion cover which solves the above-mentioned problems, enhances water stoppage at a connecting portion between a cladding tube and a connection fitting, and makes the cladding tube hardly corroded.

[0009]

In order to achieve this object, the connecting portion cover of the present invention is characterized by a bellows tube having grooves formed at regular intervals along the longitudinal direction and along the circumferential direction on the outer peripheral surface. A pipe covering portion covering a covering tube provided with a resin soft covering film on the outer peripheral surface thereof, and a fitting covering portion covering a connecting fitting for connecting the covering tube to a connected object, and A pair of cover members having a two-part configuration is provided in the radial direction, a convex portion is provided on one of the mating portions facing each other on the mating surface of the two cover members, and a concave portion is provided on the other mating portion to be fitted with the convex portion. A tightening portion for continuously contacting and tightening the covering film of the covering tube in a circumferential direction in a state where the two cover members are put together and covering a connecting portion between the covering tube and the connection fitting; And a projection that fits into the groove of the cladding tube. In the place provided on the inner surface.

[0010]

According to the characteristic structure of the connecting portion cover of the present invention, the outer peripheral surface of the bellows tube having grooves formed along the longitudinal direction at regular intervals along the peripheral direction is made of a soft resin coating. A pair of cover members having a pipe covering portion for covering a covering tube provided with a membrane, and a fitting covering portion for covering a connection fitting for connecting the covering tube to a connector, and having a radially bisected configuration; Is provided, a convex portion is provided at one mating portion facing each other at the mating surface of the two cover members, and a concave portion is provided at the other mating portion to be fitted with the convex portion.
In the state of covering the connecting part of the cladding tube and the connection fitting,
Since a fastening portion for continuously abutting and tightening in the circumferential direction with respect to the coating film of the coating tube is provided on the inner surface of the tube coating portion, the coating tube is connected to the connected object by the connection fitting. Just by connecting the two cover members to the connected part and fitting the convex part and concave part of the mating part, for example, it can be easily installed even in a pipe in a narrow space, and moreover, detergent and The water containing the bleaching agent or the like is prevented from directly splashing on the cladding tube, and the fitting structure of the convex portion and the concave portion of the joining portion makes it difficult for the water to enter the inside from the joining portion.

Further, since the fastening portion provided on the inner surface of the tube covering portion comes into contact with and fastens around the cladding tube, it is possible to prevent water from flowing along the cladding tube.

[0012] In addition, a projection that fits into the groove of the cladding tube is provided on the inner surface of the tube coating portion in a state where the connection portion between the cladding tube and the connection fitting is covered. By fitting into the connecting portion, the movement of the connecting portion cover attached to the connecting portion in the axial direction of the cladding tube can be suppressed, and the connecting portion cover can be prevented from being displaced from the connecting portion. That is, the groove originally present in the cladding tube is
It can be used to prevent the connecting part cover from slipping
No, for example, without connecting part cover
There is no need to specially process the fitting for stopping
It is possible to easily install the device without taking time. Follow
The size of the connection fittings and connected objects is different
For the installation environment, fit the two-part cover
If the protrusion can be fitted into the groove of the cladding tube,
Can it be installed in a state where it does not slip in the direction of the pipe axis?
Can be attached to connecting parts with different dimensions.
You. As a result, not only new connections but also existing connections
Also, it can be easily attached. Also,
The connecting part cover is formed separately from the cladding tube and connecting fittings.
Because there is, it is formed by an advantageous manufacturing method by itself
Can be integrated, for example, into the
Efficiently and inexpensively compared to forming a cover part
It is possible to do.

Therefore, the fact that water is not directly applied to the connecting portion prevents water from penetrating into the connecting portion cover, so that it is possible to prevent the cladding tube from being corroded as in the prior art.

[0014]

Therefore, according to the connecting portion cover of the present invention, it is possible to easily and inexpensively and stably mount the connecting portion cover, and it is possible to reduce the water stoppage at the connecting portion between the cladding tube and the connecting fitting. As a result, it becomes possible to make the cladding tube hard to corrode, and as a result, the life of the cladding tube is extended and the maintenance cost can be reduced. Furthermore,
Even if the size of the tie is different,
Easy to attach, so it can be widely applied as a connection cover
It becomes possible.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

In the embodiment described here, for example, a connection fitting 3 is used to connect a coating pipe 1 used for a hot water supply pipe used around water in a kitchen or the like to a hot water supply apparatus 2 which is an example of a connected product.
FIG. 1 is a connecting portion cover 4 installed to prevent corrosion of the cladding tube 1 caused by splashing water mixed with a detergent, a bleaching agent, or the like by covering a connection portion between the cladding tube 1 and the cladding tube 1. As shown in FIG. 1, a joining portion formed by providing a joining fitting 3 that abuts a covering tube 1 provided with a flange portion 1a at an end thereof on a hot water supply device 2 via a packing 5 and externally fits and joins the covering tube 1 to the hot water supply device 2. A connecting portion cover 4 that covers a connecting portion between the joint fitting 3 and the cladding tube 1 from outside.

The cladding tube 1 is formed by providing a soft bellows tube 7 made of resin on a metal bellows tube 7 having grooves 6 formed on the outer peripheral surface at regular intervals along the longitudinal direction and along the circumferential direction. And a flange portion 1a contacting the packing 5 at its end.
Is provided. In addition, the cladding tube 1 in the vicinity of the flange 1a
Has been removed by cutting the coating film 8 in the circumferential direction.

The hot water supply apparatus 2 will be described. A mounting opening for mounting the cladding tube 1 is formed in a cylindrical body having an end surface formed with a contact surface 2a with which the packing 5 abuts, and an outer peripheral surface of the cylindrical body. A male screw portion 2b into which the joint fitting 3 is screwed.
Is provided.

The joining fitting 3 is a cylindrical body having an inner peripheral surface provided with a female screw portion 3a screwed to the male screw portion 2b. One end of the joining metal member 3 is larger than the outer diameter of the cladding tube 1. , A small diameter portion 3b smaller than the flange portion 1a is provided.

At the joint portion, a packing metal 3, a flange 1a of the cladding tube 1 and a joint fitting 3 fitted externally to the cladding tube are arranged in a state where the respective axes are aligned with the cylindrical body axis of the hot water supply apparatus 2. Then, the joining metal fitting 3 is moved to the hot water supply apparatus 2 side, and the female screw part 3a is screwed into the male screw part 2b and screwed, so that the small diameter part 3b of the joining metal fitting 3 becomes the flange part 1a of the cladding tube 1. When the screw is further advanced, the packing 5 and the flange 1a of the cladding tube 1 are clamped and joined between the small diameter portion 3b and the contact surface 2a of the hot water supply device 2. I can do it.

A description will be given of the connecting portion cover 4 which covers the above-mentioned joining metal fitting 3 and the covering tube 1 at the joining portion. The connecting portion cover 4 is divided into two parts in the radial direction, and a tube covering portion 9 covering the covering tube 1 is provided. Connection fitting 3
Cover member 11 provided with a metal covering portion 10 for covering
And a convex portion 11a is provided on one of the mating portions facing each other on the mating surface of the two cover members 11, and a concave portion 11b is provided on the other mating portion so as to be fitted with the convex portion 11a.

Further, the inner surface of each of the tube covering portions 9 of the two cover members 11 is covered with the connecting portions together with the two cover members 11 in a circumferential direction with respect to the covering film 8 of the covering tube 1. A fastening portion 9a which continuously contacts and tightens
A projection 9b that fits into the groove 6 of the cladding tube 1 is provided. Further, a locking portion 12 and a locked portion 13 are provided on the inner peripheral surface of both cover members 11 to engage with each other in a state where both cover members 11 are combined.

Another Embodiment Another embodiment will be described below.

<1> The connecting portion cover 4 of the above embodiment is
The convex portion 11a of the cover member 11 is engaged so as to be radially engaged.
And the concave portion 11b is formed, but the present invention is not limited to this. For example, if the concave portion 11b is formed in a dovetail groove and the convex portion 11a is formed in a shape engaging with the dovetail groove, The cladding tube 1 is engaged in the direction along the axial direction, and the locking portion 12 and the locked portion 13 can be omitted.

<2> Further, the two cover members 11 are not limited to those formed separately. For example, one of the mating portions is swingably connected via a hinge, The member 11 may be provided with a string-shaped connecting portion and connected to form an integrated structure. In this case, when manufacturing by integral molding, the number of parts can be reduced and the assembly becomes easy.

<3> If the tube covering portions 9 of the two cover members 11 are formed of, for example, a bellows-shaped and bendable material or structure, the connected covering tube 1 moves in a direction deviating from the axis. Even if it moves, the tightening portion 9a follows the cladding tube 1 while being clamped, so that the cladding tube 1 is unlikely to be bent or the waterproofness of the connecting portion is not reduced.

<4> Furthermore, if the metal cover 10 of the two cover members 11 is formed in a shape along the outer peripheral surface of the metal joint 3, the metal fitting 3 and the cladding tube 1
It is possible to cover them with the connecting portion cover 4 before attaching them, and to operate the fastener 2 such as a wrench from the outer peripheral surface of the metal covering portion 10 to join them to the connecting object 2.

[0028] In the claims of the utility model registration, reference numerals are written for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a connecting portion cover according to an embodiment.

FIG. 2 is a cross-sectional view illustrating a connection portion cover of the embodiment.

FIG. 3 is a sectional view showing a conventional joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coated pipe 2 Connected object 3 Connection metal fitting 6 Groove 7 Bellows pipe 8 Coating film 9 Tube coating part 9a Tightening part 9b Projection 10 Metal fitting covering part 11 Cover member 11a Convex part 11b Concave part

Claims (1)

(57) [Scope of request for utility model registration] 1. A resin-made soft coating film (8) is provided on the outer peripheral surface of a bellows tube (7) having an outer peripheral surface formed with grooves (6) at regular intervals along the longitudinal direction and along the peripheral direction. At a connection point between the provided cladding tube (1) and a connection fitting (3) for connecting the cladding tube (1) to the connection object (2), the cladding tube (1) and the connection fitting ( 3) a connecting part cover covering the covering pipe (1) and a fitting covering part covering the connecting fitting (3) in a radially-divided configuration. 1
0), a convex portion (11a) is provided at one of the mating portions facing each other on the mating surface of the two cover members (11), and the convex portion is formed at the other mating portion. A concave portion (11b) that fits with the portion (11a) is provided, and the cover film (8) of the cladding tube (1) is placed in a state where the two cover members (11) are combined to cover the connecting portion. And a projection (9b) fitted into the groove (6) of the cladding tube (1) and a clamping portion (9a) that continuously abuts and tightens in the circumferential direction. Connecting part cover provided on the inner surface.