JP4584395B2 - End covering member - Google Patents

Description

[0001]
[Industrial application fields]
The present invention is an end covering member, the ends of such hermetically wires in detail in the al, and easily about the coatable edge covering member.
[0002]
[Prior art and problems]
Generally, the line-shaped member such as the electric wire 1 is generally wound around the drum 2 and stored or transported. When there is still a surplus after using such a line-shaped member, for example, the electric wire 1, it is stored in a warehouse or the like while being wound around the drum 2 as shown in FIG. At this time, the end 11 of the electric wire 1 is in a state in which a copper wire or the like is exposed, and particularly the copper wire has a disadvantage that it is easily rusted, so that the end is covered with a tape or the like.
[0003]
However, the operation of winding and covering the end portion of the tape as described above has a drawback that it requires some skill and is troublesome.
[0004]
The present invention has been made in view of the above problems, and an object thereof is to provide a line-shaped member end can be covered easily gastight edge covering member of.
[0005]
[Means for solving problems]
To solve the above problems, edge covering member according to the present invention, a tubular jacket having a hollow portion of larger diameter than the diameter of the end portion to be coated, be connected covered the open end of the jacket A close contact portion having a hollow portion having a diameter smaller than the diameter of the power end portion, and the covering body and the close contact portion are integrally formed of an elastomer material, and the close contact portion is formed at the tip of the cover body. has a projection for forming a space between the contact portion in contact with the an outer wall and said cover member, said contact portion is raised Ri wound outward, the contact portion is rolled up In the state, the opening end of the covering body has an inner diameter larger than the diameter of the end portion to be covered without being expanded by another member or other diameter expanding means .
[0008]
According to the present invention, the close contact portion preferably swells outwardly with the boundary between the covering and the close contact portion as a fulcrum, so that the end of the line-shaped member can be easily inserted, and the By correcting the curling, the end portion can be easily and airtightly covered without using a tape because the line-shaped member comes into close contact.
[0009]
【Example】
FIG. 1 is a perspective view of an end covering member according to the present invention, and FIG. 2 is a sectional view thereof. As is clear from these drawings, the end covering member 3 according to the present invention is a linear member (hereinafter, A cylindrical covering 31 for covering the end 11 of the electric wire will be described as an example, and a close contact portion 32 connected to an opening end formed at one end of the covering 31.
[0010]
As apparent from FIGS. 1 and 2, the cover 31 has a hollow cylindrical structure in which an open end is formed at one end and the other end is closed. . The covering 31 has a hollow portion 311 having a diameter larger than that of the electric wire 1, while the close contact portion 32 is formed with a hollow portion 321 having a diameter slightly smaller than that of the electric wire 1. And this covering 31 and the contact | adherence part 32 have the structure connected via the boundary part 33 provided with the hollow part 331 which is gradually diameter-reduced. These hollow portions 311, 321, and 331 are in communication with each other, so that the electric wire 1 can be inserted into the hollow portion 311 of the covering 31 (see FIG. 3C).
[0011]
In the present invention, the close contact portion 32 swells outward from the front end with the boundary portion 33 as a fulcrum, and the inner wall of the close contact portion 32 faces outward. Therefore, the diameter of said end cover member is adapted to the diameter substantially corresponding to the diameter of the cover 31, it is possible to insert the wire 1 is a small diameter than this size easily.
[0012]
In order to use such an end covering member according to the present invention, first, the end 11 of the electric wire 1 is inserted into the hollow portion 311 of the covering 31 (see FIG. 3A). After that, the close contact portion 32 that has been rolled up is subjected to a force in the direction of the arrow in FIG. A protrusion 34 is provided at the tip of the contact portion 32 so as to come into contact with the cover 31. A space S is formed between the contact portion 32 and the cover 31 by the protrusion 34. . Thus, by forming the space S, the close contact between the close contact portion 32 and the covering 31 is reduced, and it becomes possible to easily perform the work of eliminating the twist.
[0013]
When the wrinkle is eliminated to the end, the contact portion 32 is slightly smaller than the diameter of the electric wire 1, so that it comes into close contact with the electric wire 1 and the end portion 11 is covered in an airtight manner.
[0014]
Since such an action is performed, the end covering member according to the present invention needs to be elastic, and when used as an end covering member of an electric wire, it is desirable that the end covering member has good insulation. In addition, since it is transported and stored in a squeezed state, it must have a permanent elongation characteristic that can secure sufficient airtightness when squeezing is eliminated for at least half a year. This permanent elongation is preferably within 30%. This is because if it exceeds 30% as described above, sufficient airtightness may not be ensured. Moreover, since it is necessary to roll up the adhesion part 32, the elongation characteristic is preferably 500% or more. If it is less than 500%, damage may occur when the contact portion is rolled up. Further, the expansion ratio (the diameter when expanded relative to the original diameter) is preferably within 400%. This is because if it exceeds 400%, the permanent elongation is lowered, and there is a possibility that sufficient airtightness cannot be ensured when dripping is eliminated.
[0015]
As a material for manufacturing such an end covering member, for example, ethylene / propylene rubber, silicone rubber, or the like can be used.
[0016]
Furthermore, the film thickness ratio between the covering portion 31 and the close contact portion 32 is preferably 1: 1 to 1/2. When the film thickness of the close contact portion 32 is increased, it is difficult to scoop up and the close contact portion 32 may be damaged. On the other hand, if it is less than ½, the work of scooping up becomes easy, but there arises a problem that the airtightness of the contact portion 32 to the electric wire 1 is lowered.
[0017]
Such an end covering member 3 is manufactured using a manufacturing jig 5 for an end covering member as shown in a perspective view in FIG. 4 and in a plan view in FIGS. 5 (a) and 5 (b). That is, the end covering member manufacturing jig 5 has a diameter-expanding pin 52 that is movable in the diameter-expanding direction of the hollow portion 321 of the contact portion 32 (for example, 45 ° direction as shown in FIG. 5B). ing. In this embodiment, the diameter expansion pins 52 are respectively erected and fixed on a plurality of bases 51 (four in FIG. 4), and the bases 51 move in the diameter expansion direction of the hollow portion 321. By doing so, the said diameter expansion pin 52 moves to the diameter expansion direction. Moreover the provided diameter pin 52 of the enlarged diameter state is curled up ring 53 has an inner diameter is provided, et al are such as to abut, so as diameter of said radially enlarged pin 52 is controlled by the raised ring 53 this curling ing. Further, the rolling-up ring 53 moves in a direction opposite to the base 51 (left direction in FIG. 4).
[0018]
Moreover, it has the pushing ring 54 which pushes the contact part 32 of the connection part coating | coated member expanded in diameter to the base 51 direction. The outer diameter of the push-in ring 54 is smaller than the inner diameter when the diameter-expanding pin 52 is expanded, and is movable in the direction of the base 51. Furthermore, the diameter expansion center of the diameter expansion pin 52 and the diameter centers of the rolling-up ring 53 and the push-in ring 54 coincide with each other.
[0019]
As shown in FIGS. 6, 7, and 8, first, an end covering member precursor (contact portion, boundary portion, covering portion) in which the close contact portion 12 is not rolled up when the interval between the plurality of diameter expansion pins 52 is minimum. The diameter expansion pin 52 is fitted in the hollow portion 121 of the close contact portion 32 (the body is connected on a straight line) (see FIG. 6). At this time, the push ring 54 is fitted to the outside of the end covering member precursor.
[0020]
In such a state, when the base 51 is moved in the diameter increasing direction (see FIG. 7), the contact portion 12 is expanded in diameter. At this time, the diameter expansion pin 52 abuts against the inner diameter of the rolling-up ring 53, and the diameter expansion is controlled. In such a state, the rolling-up ring 53 is moved in the direction opposite to the base 51 and the push-in ring 54 is moved in the direction of the base 51. The rolling ring 53 pushes the end of the close contact portion 32 in the direction opposite to the base 51, while the push-in ring 54 pushes the outer wall of the close contact portion 32 into the inside of the enlarged diameter of the diameter expansion pin 52. 12, the end covering member 3 of the present invention shown in FIG. 1 is obtained by moving the scooping ring 53 to the vicinity of the boundary portion 13 (see FIG. 8).
[0021]
In the above embodiment, the electric wire has been described as an example. However, the present invention is not limited to this, and other line-shaped members such as an optical fiber cable and a gas pipe can be covered. Is clear.
[0022]
【The invention's effect】
As described above, according to the end covering member according to the present invention, the close contact portion preferably swells outwardly with the boundary portion between the cover and the close contact portion as a fulcrum, so the end portion of the line member is By being able to insert easily and correcting the curling, the close contact portion comes into close contact with the line member, so that it can be easily and airtightly covered without using a tape.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of an end covering member according to the present invention.
FIG. 2 is a cross-sectional view of an embodiment of an end covering member according to the present invention.
FIG. 3 is an explanatory diagram when covering an end portion of the embodiment.
FIG. 4 is a perspective view of an end covering member manufacturing jig according to the present invention.
FIG. 5 is a plan view of an end covering member manufacturing jig according to the present invention.
FIG. 6 is a view for explaining a method of manufacturing an end cover member of the present invention using an end cover member manufacturing jig.
FIG. 7 is a view for explaining a method of manufacturing the end cover member of the present invention using an end cover member manufacturing jig.
FIG. 8 is a view for explaining a method of manufacturing the end cover member of the present invention using the end cover member manufacturing jig.
FIG. 9 is an explanatory view showing a storage state of a conventional line-shaped member.
[Explanation of symbols]
3 End covering member 31 Covering body 311 Hollow part 32 Adhering part 321 Hollow part 33 Boundary part 331 Hollow part 34 Projection 5 Manufacturing jig for end covering member.
51 Base 52 Expanding Pin 53 Rolling Ring 54 Pushing Ring

Claims (4)

A cylindrical jacket having a hollow portion of larger diameter than the diameter of the end portion to be coated, the contact portion having a hollow portion of smaller diameter than the diameter of the end portion to be connected covered the open end of the jacket, The covering body and the close contact portion are integrally formed of an elastomer material, and the close contact portion abuts the outer wall of the cover body at the tip thereof, and between the close contact portion and the cover body. It has a projection for forming a space, wherein the adhesion portion is raised Ri wound outward, the open end of the cover member in a state in which the contact portion is rolled up another member or other enlarged diameter section An end covering member characterized by having an inner diameter larger than the diameter of the end to be covered without being expanded by .   The end covering member has a boundary portion that gradually decreases in diameter at a boundary between the covering body and the close contact portion, and the close contact portion is rolled up with the boundary portion as a fulcrum. The end covering member according to claim 1.   The end covering member according to claim 1 or 2, wherein the end covering member has a permanent elongation of 30% or less.   The end covering member according to any one of claims 1 to 3, wherein a ratio of the thickness of the covering to the close contact portion is 1: 1 to 1/2.

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