JPH0447513Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a protector that is attached to the outer circumferential surface of a hose whose outer circumferential surface is easily damaged during use to protect the outer circumferential surface.

[Conventional technology]

Car wash hoses for automobiles, water hoses for construction and civil engineering, etc. usually use flexible hoses made of rubber or synthetic resin reinforced with fibers or wires.
During use, the hose is dragged over concrete floors, etc., so the outer circumference of the hose is easily rubbed and damaged, making it unusable in a short period of time.

Therefore, car wash hoses and the like whose outer circumferential surface is severely damaged are usually made of wear-resistant rubber such as SBR, or those whose rubber outer circumference is entirely covered with a synthetic resin tube such as PVC are used.

However, even if a hose is made of wear-resistant rubber, if it is dragged around on a concrete floor, the outer periphery will get scratches, and eventually the scratches will reach the inner fiber or wire reinforcement layer, making it unusable. become. In addition, a hose entirely coated with synthetic resin loses its flexibility and becomes difficult to bend, resulting in poor operability.On the other hand, if the thickness of the coating is too thin, it will break early due to scratches or wear.

Furthermore, when a heavy object such as a car is placed on a car wash hose, the hose is crushed, making it impossible to wash the car, and repeated collapse of the hose often results in damage.

[The problem that the idea aims to solve]

In view of these conventional circumstances, the present invention has been developed to provide a protector that can be worn on hoses that are dragged over concrete floors, etc., and can prevent scratches and abrasion on the outer circumferential surface without impairing the hose's flexibility or operability. The purpose is to provide.

[Means for solving the problems]

In order to achieve the above object, the hose damage prevention protector of the present invention is made of cylindrical rubber or soft resin, has a through hole in the axial center that has an inner diameter that closely fits the outer circumference of the hose, and has an annular groove on the outer circumferential surface. and a rotary ring made of hard resin that is rotatably fitted in the annular groove of the locking body in the circumferential direction.

The locking body is made of a flexible rubber such as chloroprene rubber or a soft resin such as urethane resin, and has an inner diameter slightly smaller than the outer diameter of the hose so that the locking body can be closely attached to the outer circumference of the hose.

In addition, the rotating ring that fits into the annular groove of the locking body is
Naturally, in order to be able to rotate along the annular groove and not to separate from the annular groove, the inner diameter is made larger than the outer diameter of the annular groove and smaller than the outer diameter of the protruding edges on both sides of the annular groove, and the cross-sectional shape is A circular or semicircular shape or a similar shape is preferable so that it can easily rotate or slide on a concrete floor surface.

As for the material, a hard resin such as nylon resin, which is hard and has high resistance to abrasion, is used so that there is little damage even if it is dragged over a concrete floor or the like.

Regarding the locking body, its annular groove and rotating ring,
There are no restrictions on the shape, dimensions, etc. other than those mentioned above.

[Effect]

The hose damage prevention protector of the present invention is used by being fitted around the outer circumference of the hose. The hose with the protector fitted around its outer periphery separates from the concrete floor near the protector because the rotary ring of the protector comes into contact with the concrete floor. Therefore, even when the hose is routed around, the rotary ring of the protector rotates or is dragged while contacting the concrete floor surface, so that the hose is not damaged in the vicinity of the protector.

Therefore, it is necessary to fit the protector at least in a location where the hose is likely to be damaged by contact with a concrete floor surface, etc., but it may be fitted over the entire length of the hose. The spacing between the protectors to be fitted will vary depending on the hose size, ring outer diameter, etc., but it should be an appropriate spacing that will allow the hose to separate from the concrete floor surface in areas susceptible to damage, while also ensuring flexibility and operability of the hose.

In addition, since the retaining body of the protector fitted to the outer circumference of the hose adheres closely to the outer circumference of the hose, it will not move in the length direction of the hose unless it is forcibly moved, but it may be fixed to the outer circumference of the hose with adhesive. .

The hard resin rotating ring is hard and has excellent wear resistance, so it is less likely to be damaged or worn out even when dragged around on concrete floors, etc., and can protect the hose for a long time. In addition, by appropriately selecting the cross-sectional shape and outer diameter and inner diameter of the rotating ring, it is possible to give it a buckling crushing strength that will not break even if a car steps on it during a car wash.
Combined with wear resistance, it has a semi-permanent lifespan.

The protector of the present invention can be used alone by being fitted around the outer circumference of the hose.
It can also be used in combination with the hose protection bulb proposed by No. 63-128186.

〔Example〕

A specific example of the present invention will be explained with reference to the drawings.

As shown in Fig. 1, the protector 2 includes a cylindrical locking body 3 made of chloroprene rubber, and the inner diameter of the through hole of the locking body 3 is 0.3 mm smaller than the outer diameter of 16.3 mm of the hose 1 to which it is attached. It is made to a small size of 16.0mm. The outer peripheral surface of the locking body 3 has a width of 11 mm and a depth of 4.5 mm.
An annular groove 4 is formed, and the outer diameter of the annular groove 4 is 23
mm, therefore the outer diameter of the protruding edges 5 on both sides is 32 mm
It's getting old. Furthermore, in the annular groove 4 of this locking body 3, there is an elongated semicircular sphere whose cross section is circular with a radius of 5 cm on the outside and a straight line with a width of 10 cm on the inside so that it can rotate in the circumferential direction and not separate from the annular groove 4. A rotating ring 6 made of 6-nylon having an inner diameter of 24 mm and an outer diameter of 43 mm is fitted therein.

As shown in Fig. 2, the protector 2 described above is forcibly fitted into a car wash hose 1 with a length of 10 m and an outer diameter of 16.3 mm, and the remaining part except for both ends, which are less likely to drag on the concrete floor. almost 20
A total of 17 pieces were fitted at cm intervals.

When the hose 1 with the protector 2 manufactured in this manner was used for car washing by connecting a spray gun 7 for car washing to one end and a car washing machine body 8 to the other end as shown in FIG. Since the rotary ring 6 rotates and slides on the concrete floor surface without resistance, the hose 1 can be easily moved with little force. The protector 2 did not interfere with the bending of the hose 1 that occurs during car washing work, so the hose 1 could be bent freely and had good operability. Further, the hose 1 itself did not touch the concrete floor surface at all in the area where the protector 2 was located, and no damage or wear occurred even when the hose 1 was dragged around the concrete floor surface during car washing operations.

[Effect of idea]

According to the present invention, by fitting the hose to a car wash hose, etc. that is used by dragging it over a concrete floor, etc., the hose maintains its flexibility and operability while preventing scratches on the outside surface of the hose. A protector for preventing hose damage that can prevent wear can be provided.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a partial cross section of the protector of the present invention fitted to a hose;
The figure is a schematic side view of a car washing device using a hose with a protector according to the present invention. 1... Hose, 2... Protector, 3... Locking body, 4... Annular groove, 5... Projection edge, 6... Rotating ring, 7... Spray gun, 8... Car wash machine main body.

Claims (1)

[Scope of utility model registration request] The locking body is made of cylindrical rubber or soft resin, has a through hole in the axial center that has an inner diameter that fits tightly to the outer circumference of the hose, and has an annular groove on the outer circumferential surface, and a locking body with a circular groove in the annular groove of the locking body. A protector for preventing damage to a hose, characterized by comprising a rotary ring made of hard resin fitted so as to be rotatable in a direction.