JPS6245451Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electric wire protection tube, and particularly to a non-slip electric wire protection tube that does not shift or move when used for attaching electric wires.

For example, at electrical work, construction, or civil engineering sites, in order to prevent accidents such as contact with high-voltage wires or accidents of cutting the wires by construction equipment or construction materials, wire protection pipes are installed at designated locations on the wires. A plastic tube is coated.
This protective tube usually has a crack formed in the longitudinal direction of the lower center, and the electric wire is stored through the crack, but since the inner diameter of the tube body is large, if the electric wire has a slope, it cannot be protected. The tube slides down along the wire. Furthermore, even if the wires are stretched horizontally, there is a high risk that they will move due to strong winds or light contact with other objects. This invention was proposed to improve these points.

The content of this invention will be explained below with reference to the attached drawings. FIG. 1 is a perspective view showing an anti-slip protection tube 10 showing an embodiment of this invention together with its cross section, and FIG. 2 is a protection tube main body 11. FIG. 3 is a perspective view of a non-slip member 20 fixed therein.

As shown in the figure, this invention has legs 21 and 22 that can be opened and electric wires C at appropriate positions inside a protective tube main body 11 that has electrical insulation and elasticity and has a crack 12 in the longitudinal direction at the center of the lower part. Inner groove 2 that holds clamping pressure
Anti-slip member 20 made of a rubber elastic body having 3
It is characterized by being fixed.

The protective tube main body 11 is of a known type, and is made of plastic such as polyethylene resin, and flanges 13 and 14 are integrally formed in the crack 12 to facilitate attachment and detachment work to electric wires. The lengths of the flange portions 13 and 14 may be the same, but
It is also possible to provide advantages and disadvantages as in the embodiment. The cracks 12 in the protective tube main body 11 are usually almost joined together, but since they have elasticity, they can be opened by human force during work.

The anti-slip member 20 is made of a rubber elastic body with high insulation properties and high frictional resistance. Then, both ends are connected to the leg portions 2 so as to form an inner groove 23 for holding the electric wire under pressure.
1, 22, and has a substantially inverted U-shape in cross section. In the embodiment shown in FIG. 2, the legs 21 and 22 are made thin and stepped portions 25 and 25 are formed between them and the main body 24 to ensure that the main body 24 is housed and fixed in the protective tube main body 11. , designed to make it easier to open your legs. Further, it is preferable that the legs 21 and 22 have different lengths to facilitate opening.

The inner groove 23 is configured so that its width W is approximately the same as or slightly smaller than the diameter of the electric wire C to be internally installed. When the electric wire is attached, the inner groove 23 is deformed into a triangular cross section as shown in FIG. 1 to firmly hold the electric wire C.

The protrusion 26 protruding from the top of the anti-slip member 20 is fitted into the corresponding through hole 16 of the protective tube body 11,
This helps in positioning and fixing the anti-slip member 20. In addition, in reality, the legs 21 and 22 of the anti-slip member 20
is clamped by the edge of the crack 12 of the protective tube body 11 or the flanges 13 and 14 stretched over it, and the anti-slip member 20 is made of a rubber elastic body with high frictional resistance. 20
It is sufficient to clamp the legs 21, 22 at the edges of the crack 12 in order to fix it in the tube 11. FIG. 3 is a sectional view of a protective tube 10A showing this embodiment, in which an anti-slip member 20 is fixed within the tube 11A by the edge of the crack 12 of the illustrated protective tube main body 11A.

Figure 4 is a diagram showing the state in which the protective tube is attached to the inclined electric wire C. When multiple protective tubes are connected and used in this way, the protective tube for the connection part or the bottom It suffices if the located protective tube 10B is the anti-slip protective tube of this invention. In addition, the fact that the protective tube for the connecting portion has the anti-slip function according to this invention further improves the function of the protective tube.

Incidentally, FIG. 5 is a sectional view of the protective tube of this invention with the presser cover 30 attached. When attaching to a wire with a relatively large diameter or when the length of the inner groove 23 is short, the protective tube body 1 is removed when attaching the wire.
The crack in 1 may seem to open. In such a case, it is recommended to attach a presser cover 30 made of plastic or the like and having a U-shaped cross section. As shown in FIG. 5 and FIG.
4 and is fixed therein.
The inner bottom surface 32 of the presser cover 30 is formed into a gently tapered surface that is high at the center and gradually lowers toward both sides, as shown by the broken line in FIG.

As explained and illustrated above, according to this invention, the electric wire is held under pressure by the inner groove of the anti-slip member fixed inside the protective tube body, so even if the electric wire is stretched at an angle, This eliminates all problems such as sliding downwards. Furthermore, even if the wire has almost no slope, installing the protective tube of this invention prevents the protective tube from swinging due to wind or vibration, which greatly contributes to work safety. I can do it.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a cross section of a non-slip electric wire protection tube showing one embodiment of this invention, Fig. 2 is a perspective view of a non-slip member, and Fig. 3 is a non-slip electric wire protection tube showing another embodiment. A cross-sectional view of the tube, FIG. 4 is a side view of the inclined electric wire with the protective tube attached, FIG. 5 is a cross-sectional view of the retainer cover attached, and FIG. 6 is a front view of the retainer cover. 10, 10A, 10B... anti-slip electric wire protection tube, 11, 11A... protection tube body, 12... crack, 13, 14... flange portion, 16... through hole,
20... Anti-slip member, 21, 22... Leg portion, 2
3...inner groove, 26...protrusion, 30...presser cover, 31...protrusion, C...electric wire.

Claims (1)

[Claims for Utility Model Registration] 1. A protective tube body that has electrical insulation and elasticity and has a crack in the longitudinal direction at the center of the lower part, at an appropriate position inside the main body of the protective tube, has legs that can be opened and an inner groove that holds the electric wire under pressure. A non-slip electric wire protection tube, characterized in that a non-slip member made of a rubber elastic body is fixed thereto. 2. Utility model registration claim 1, in which the anti-slip member is fixed to the protective tube body by forming a protrusion on the upper part of the anti-slip member and fitting the protrusion into a corresponding through hole in the upper part of the protective tube body. The anti-slip electric wire protection tube described in item 1. 3. The anti-slip electric wire protection tube according to claim 1 or 2 of the utility model registration claim, wherein the protection tube body is a protection tube for a connecting portion.