JPH0512424Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a bathroom handrail that can be optimally used in bathrooms with high temperature and high humidity atmospheres.

[Conventional technology]

The most common type of handrail attached to the wall of a bathroom or the like has a structure in which a plurality of pipes, mainly made of stainless steel, are connected and the combination of these pipes is fixed to the wall with a bracket. In addition, as a connection structure for a pipe, for example, a socket for fitting an end of the pipe is used, a screw inserted in the radial direction is screwed into the socket, and the screw is pressed against the circumferential surface of the pipe to fix it.
In addition to this method, there is a method of connecting using a socket with a thread cut on the end of the pipe and a female thread carved on the inner periphery.
Connections using nipples etc. are also made.

Furthermore, in recent years, handrails having a double structure in which a metal tube is used as the inner tube and a sleeve made of synthetic resin is integrated around the inner tube have come into use.
In this handrail, the sleeve is made of synthetic resin, so the elasticity of the material provides a cushioning function.
Even if you accidentally press your arm etc. against the handrail with strong force, there will be no damage.
Risks such as bruises can be prevented.

This synthetic resin sleeve is fitted around the outer periphery of the metal inner tube and fixed with adhesive.
Therefore, when this handrail is used, for example, in a hot and humid bathroom, the adhesive changes significantly over time. When the adhesive strength deteriorates, the sleeve begins to rotate around the metal inner tube. The rotation of the sleeve causes great discomfort and anxiety to the person holding the handrail. Moreover, the sleeve itself is deformed, and defects such as twists, wrinkles, and cracks occur on the surface of the sleeve, deteriorating its appearance.

Therefore, in order to prevent the rotation of the synthetic resin sleeve with respect to the metal inner tube, the applicant developed a handrail in which a protrusion that bites into the sleeve is provided on the outer circumferential surface of the inner tube. I applied.

[The problem that the idea attempts to solve]

However, the movement of the synthetic resin sleeve with respect to the metal inner tube includes movement in the longitudinal direction in addition to rotation in the circumferential direction. In particular, for handrails used in high-temperature environments such as bathrooms, the thermal expansion coefficients of the metal inner tube and the synthetic resin sleeve are different, so the length of the inner tube and sleeve may become longer after long-term use. It becomes different. This change in length appears as a gap between the straight pipe part of the double pipe structure and the curved pipe part connected to it and fixed to the wall surface.
A similar difference in temperature between summer and winter also occurs.

If such a gap occurs, the appearance will be greatly deteriorated. In addition, dirt, dust, etc. tend to accumulate between the two, causing a deterioration in the sense of cleanliness.

Therefore, the present invention suppresses the thermal expansion of the synthetic resin sleeve by interposing a ring that regulates the expansion and contraction of the synthetic resin sleeve, and provides a handrail that does not create gaps at the connection part. The purpose is to

[Means to solve the problem]

In order to achieve this purpose, the bathroom handrail of the present invention has a double pipe structure in which a synthetic resin sleeve is fitted around the outer periphery of a metal inner pipe, and is connected by screws to the inner peripheral surface of the synthetic resin sleeve. Alternatively, it is characterized in that pressure-contacting expansion/contraction regulating rings are brought into contact with both ends of the metal inner tube through a bush or directly.

〔Example〕

Hereinafter, the features of the present invention will be specifically explained using examples with reference to the drawings.

FIG. 1 shows a handrail with a straight pipe section having a double pipe structure according to the present invention.

This handrail includes a straight pipe 1 and a pair of curved pipes 2 connected to both ends of the straight pipe 1. In addition,
It is also possible to divide the straight pipe 1 into two pipes approximately at the middle, and to fix the middle part to the wall surface 3 with a suitable bracket. A flange 5 is connected to a portion of the curved pipe 2 facing the wall surface 3 by screws 4. Further, the flange 5 is attached to the wall surface 3 with screws 6 and covered with a cover 7.

The straight tube 1 has a double tube structure consisting of a metal inner tube 8 made of stainless steel or the like and a synthetic resin sleeve 9 integrally fitted to the outer peripheral surface of the metal inner tube 8. On the other hand, the bent pipe 2 is a solid body having a female thread 10 formed at its end, and is made of a hard synthetic resin such as polyamide resin.

FIG. 2 shows both ends of the metal inner tube 8 and the synthetic resin sleeve 9.

Bushes 11 are fitted into both ends of the metal inner tube 8. A female thread 12 similar to the female thread 10 is carved into this bushing 11, and by screwing a male thread 13 (see Fig. 1) into these female threads 10 and 12, a straight pipe 1 can be connected to a curved pipe 2. Attach to.
A protrusion 14 is formed on the inner periphery of the metal inner tube 8 by caulking or the like so that the bush 11 does not rotate together during this installation. This bushing 11 has a shoulder portion 15 that comes into contact with the end surface of the metal inner tube 8, and this shoulder portion 15 regulates the position of the metal inner tube 8.

The outside of the bushing 11 is made of synthetic resin
A contraction restriction ring 16 is arranged. ring 1
A screw 17 is carved on the outer circumferential surface of 6. On the other hand, on the inner peripheral surface of both ends of the synthetic resin sleeve 9,
A female threaded portion 18 that engages with the screw 17 is carved. After inserting the tip of the bush 11 into the metal inner tube 8, this ring 16 is attached so that the side surface of the ring 16 is attached to the bush 11.
It is screwed into the synthetic resin sleeve 9 until it comes into contact with the synthetic resin sleeve 9.

With this ring 16 device, the metal inner tube 8
The positional relationship of the synthetic resin sleeve 9 with respect to the sleeve 9 is fixed. That is, the ring 16 is in contact with a bush 11 having a shoulder 15 that is in contact with the end surface of the metal inner tube 8, and the ring 16 and the synthetic resin sleeve 9 are in contact with each other.
Since these are screwed together, movement such as slipping or displacement of the synthetic resin sleeve 9 in the longitudinal direction is restricted. Furthermore, even if the lengths of the metal inner tube 8 and the synthetic resin sleeve 9 are different due to a difference in thermal expansion coefficient, both ends of the synthetic resin sleeve 9 are restrained by the rings 16. Therefore, the synthetic resin sleeve 9 expands and contracts following the metal inner tube 8. Therefore, the synthetic resin sleeve 9 and the bent pipe 2
There is no gap between the end face and the end face.

Instead of a screw connection between the synthetic resin sleeve 9 and the ring 16, a means for pressing the ring 16 against the inner surface of the synthetic resin sleeve 9 may be employed. In this case, for example, the inner diameter of both ends of the synthetic resin sleeve 9 may be tapered or gradually reduced in inner diameter from the end face. When the ring 16 is press-fitted into the synthetic resin sleeve 9, the outer peripheral surface of the ring 16 is pressed against the inner surface of the synthetic resin sleeve 9. As a result, both ends of the synthetic resin sleeve 9 are restrained by the rings 16.

In the above example, the bush 11 and the ring 1
In the illustrated embodiment, the metal inner tube 8 and the metal inner tube 8 are separate bodies, but it is also possible to use a ring 16 integrated with the bushing 11. As proposed in Japanese Utility Model Application No. 62-72759, it is also possible to provide a protrusion on the outer periphery of the metal inner tube 8 that will bite into the synthetic resin sleeve 9, thereby preventing the synthetic resin sleeve 9 from rotating around the metal inner tube 8.

[Effect of idea]

As explained above, in the present invention, expansion/contraction control rings that are threaded or pressure-welded to the synthetic resin sleeve are arranged at both ends of the metal inner tube, so that the expansion/contraction control rings are arranged at both ends of the metal inner tube. This prevents gaps from forming at the ends of the synthetic resin sleeve. The expansion/contraction restriction ring also functions to prevent the synthetic resin sleeve from sliding against the metal inner tube. As a result, there is no misalignment between the parts, and a handrail that has a constant shape over a long period of time can be obtained.

[Brief explanation of drawings]

FIG. 1 shows a handrail according to an embodiment of the present invention, and FIG. 2 is a sectional view showing both ends of a straight pipe. 1... Straight pipe, 2... Bent pipe, 3... Wall surface, 4, 6
...screw, 5...flange, 7...cover, 8...
...Metal inner tube, 9...Synthetic resin sleeve, 1
0, 12...Female thread, 11...Button, 13...
...Male thread, 14...Protrusion, 15...Shoulder, 16...
...Expansion/contraction control ring, 17...Screw, 18...
...Female threaded part of the sleeve.

Claims (1)

[Scope of utility model registration request] It has a double pipe structure in which a synthetic resin sleeve is fitted around the outer periphery of a metal inner pipe, and an expansion/contraction regulating ring that is threadedly connected or press-contacted to the inner peripheral surface of the synthetic resin sleeve is inserted through a bush or directly. A handrail for a bathroom, characterized in that it abuts both ends of the metal inner tube.