JP4785065B2 - Room temperature shrinkable tube unit housing - Google Patents

Description

  The present invention relates to a cold-shrinkable tube unit housing in which cold-shrinkable tube units used for connecting power cables are housed in a storage container.

  Conventionally, a room temperature shrinkable tube unit has been used to insulate a connecting portion of a power cable such as a high voltage CV cable. An example of the room temperature shrinkable tube unit is shown in FIG. The cold-shrinkable tube unit in FIG. 11 includes a substantially cylindrical tube 2 and a diameter expanding member 4.

  The tube 2 is formed of a rubber material having elasticity at room temperature, such as ethylene propylene rubber and silicone rubber, and can be reduced in diameter at room temperature even if the diameter is once expanded. The diameter-expanding member 4 is, for example, a spiral core in which a strip-shaped wire 5 having a substantially crank-shaped cross section as shown in FIG. 12 is spirally wound, and is disposed on the inner peripheral side of the tube 2. The inner diameter of 2 is maintained in an expanded state.

  When connecting the power cable using the above-mentioned cold-shrinkable tube unit, in order to prevent deterioration of the electrical characteristics at the power cable connection location, dust or foreign matter adheres to the cold-shrinkable tube unit, It is necessary to prevent it from sticking. Therefore, the above-mentioned normal temperature shrinkable tube unit is shipped in a state where it is packed with a packing material and further stored in a storage container such as a cardboard box in order to prevent external dust and foreign matter from being attached or damaged. Is normal (see, for example, Patent Document 1). In this case, conventionally, for example, a cold shrink tube unit package is stored in a storage container, and a buffer material is filled in a gap in the storage container.

  At the construction site, the room temperature shrinkable tube unit package is taken out from the storage container, and the power cable is connected using the room temperature shrinkable tube unit. In this case, after covering the connection portion of the power cable with the room temperature shrinkable tube unit, pulling the diameter expanding member 4 from the tube 2 while pulling the one end side 6 of the wire of the diameter expanding member 4 to disassemble the diameter expanding member 4. As a result, the diameter of the tube 2 is reduced and brought into close contact with the connecting portion of the power cable (see, for example, Patent Document 2).

  However, the diameter-expanding member 4 of the cold-shrinkable tube unit shown in FIGS. 11 and 12 includes an L-shaped fitting portion 5a on one side of the belt-like wire 5 and an L-shaped fitting on the other side. Since the portion 5b is meshed with each other and wound in a spiral shape, an impact is applied to the longitudinal end portion of the diameter-expanding member 4 and the meshing A of the wire 5 is released, the contraction force of the tube 2 causes the expansion. The diameter member 4 may collapse (for example, refer to Patent Document 3).

  Therefore, in the room temperature shrinkable tube unit housing in which the room temperature shrinkable tube unit is housed in the storage container and the gap in the storage container is filled with the buffer material, a physical force of a certain level or more is applied to the storage container by vibration or dropping during transportation. The end of the expanded member may collide with the inner surface of the storage container directly or through a cushioning material, or an impact or load may be applied to the end of the expanded member, causing the expanded member to collapse during transportation. was there.

JP 2000-355380 A JP 2003-299240 A Japanese Patent Laid-Open No. 11-289627

  The present invention has been made in view of the above-described circumstances, and is a room temperature shrinkable tube unit storage body in which a room temperature shrinkable tube unit used for connecting a power cable is stored in a storage container, and the diameter-expanding member collapses during transportation. It aims at providing the cold-shrinkable tube unit storage body prevented.

In order to achieve the above object, the present application provides the following inventions.
(1) A room-temperature-shrinkable tube unit comprising a tube that is reduced in diameter at room temperature and a cylindrical diameter-expanding member that is disposed on the inner peripheral side of the tube and holds the tube in an expanded state is accommodated in a storage container. A room temperature shrinkable tube unit housing,
A holding member that contacts the tube and does not contact the diameter-expanding member is disposed in the storage container, and the room temperature shrinkable tube unit is held by the holding member so as not to move in the storage container.
The holding member includes a base portion that contacts the inner surface of the end portion of the storage container formed at one end, a pressing portion that contacts the tapered portion of the tube unit formed at the other end portion, and a base portion that connects the base portion and the pressing portion. A cardboard made of an intermediate portion that connects the pressing portion is formed by bending the length of the base portion of the holding member longer than the pressing member so that the end of the diameter-expanding member does not contact the inner wall of the storage container ,
Further, the tube is formed with tapered portions that are reduced in diameter toward the tip at both ends in the longitudinal direction, and each of the four tubes that hold the outer peripheral surface of the tapered portion at both ends from above, below, left and right. One end of the holding member abuts on the inner peripheral surface of the storage container,
The other end is in contact with the tapered portion of the tube unit, and the holding member is disposed in the storage container so that its position does not change in the radial direction of the tube, and the radial direction of the tube and all SANYO spacing of the holding members to each other in the axial direction is kept unchanged,
Furthermore, the tube is made of a structure formed by bending a corrugated cardboard having an insertion portion having a substantially semicircular cross section on which the large-diameter portion of the tube is placed as the holding member so as to be inscribed in the inner peripheral surface of the storage container. Room temperature shrinkable tube unit housing, characterized by holding ,
(2) the cold shrink tube unit, the holding member is received in the receiving container as the cold shrink tube unit pack which is packed with packing material, in contact with the tapered portion and the large diameter portion of the tube, the tube via respective packaging material in indirect contact, cold shrink tube unit container of claim 1, wherein the tube unit is characterized in that it is held stationary in the storage container,
It is.

  The holding member used in the present invention is only required to contact the tube or its packing portion, and to prevent the cold shrink tube unit or its packing body from moving in the storage container without contacting the diameter-expanding member or its packing portion. The structure, shape, material, and the like are not limited, but examples of the structure and shape include those shown in the embodiments described later. Examples of the material include paper-based materials such as corrugated paper, plastic-based materials such as foamed plastic moldings and cushioning materials, wood-based materials such as plywood, and metal-based materials such as metal plates.

According to the invention of (1), since the length of the base portion of the holding member is formed longer than the pressing member so that the end portion of the diameter expanding member does not contact the inner wall of the storage container, the end portion of the diameter expanding member is In addition to not contacting the inner wall of the storage container , the holding member prevents the cold-shrinkable tube unit or its package from moving inside the storage container in a state where the holding member is not in contact with the enlarged member or its packing part. Therefore, even when a certain amount of physical force is applied to the storage container due to vibration or dropping during transportation, the end of the expanded member collides with the inner surface of the storage container, or an impact or load is applied to the end of the expanded member. Therefore, the diameter-expanding member can be prevented from collapsing during transportation. Furthermore, the invention of (1) is configured such that, as the holding member, corrugated paper having an insertion portion having a substantially semicircular cross section on which the large diameter portion of the tube is placed is bent so as to be inscribed in the inner peripheral surface of the storage container. Since the structure holds the tube, the cold-shrinkable tube unit can be more reliably and stably stored in the storage container.

According to the invention of (1) , since the holding member is in contact with both ends of the tube in the longitudinal direction or its packing portion, the room temperature shrinkable tube unit can be securely held in the storage container. In addition, a structure formed by bending a corrugated cardboard paper having an insertion portion having a substantially semicircular cross section on which the large-diameter portion of the tube is placed to be inscribed in the inner surface of the storage container is disposed to dispose the large-diameter portion of the tube. Since it hold | maintains so that it may enclose, a normal temperature shrinkable tube unit can be hold | maintained reliably.

According to the invention of (1), since the end portion, the end face, and the tapered portion of the tube are pressed by the holding member that does not change the position or interval in the radial direction and at the same time in the axial direction, It is possible to suppress without hitting the storage container without difficulty. According to the invention of (2), the cold shrink tube unit of the invention of (1), since only the packing material was packed by the packing material, it is possible to obtain the same effect as (1).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following examples.

( Reference Example 1 )
Figure 1 shows an implementation form of the cold shrink tube unit housing body according to Reference Example 1, (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view. As shown in FIG. 2, the cold-shrinkable tube unit storage body of this example stores the cold-shrinkable tube unit package 10 in which the cold-shrinkable tube unit 10a is packed with a packing material 10b inside a cardboard box 12 that is a storage container. Is. However, since the packaging material 10b can be omitted, the packaging material 10b is not shown in FIG. 1 and FIGS. In the following description, the description of the packing material 10b is omitted. Reference numeral 10a in the drawing indicates that the normal temperature shrinkable tube unit 10a may be stored directly in the cardboard box 12 without using the packing material 10b. The cold-shrinkable tube unit 10a has a tube 2 that is reduced in diameter at room temperature in the same manner as that shown in FIG. 11, and a cylindrical shape that is disposed on the inner peripheral side of the tube 2 and holds the tube 2 in an expanded state. It consists of an expanded member 4. Moreover, the taper part 3 which diameter-reduces toward the front-end | tip is formed in the longitudinal direction both ends of the tube 2. As shown in FIG.

The said normal temperature shrinkable tube unit package 10 can be produced in the following procedure.
(1) The outer peripheral protector 62 is wound around the outer peripheral surface of the tube 2.
(2) The cylindrical protector 64 is passed through the diameter expanding member 4.
(3) One end of the cylindrical protector 64 is folded back and overlapped with the outer periphery of the outer peripheral protector 62, and the adhesive tape 68 is wound around one end of the cylindrical protector 64 so as to be tightened from the outer peripheral side. Then, one end of the cylindrical protective body 64 is fixed to the room temperature shrinkable tube unit 10a.
(4) The other end of the cylindrical protective body 64 is folded back and overlapped with one end of the cylindrical protective body 64 and the outer periphery of the adhesive tape 68, and the adhesive tape 70 is attached to the other end of the cylindrical protective body 64. Is tightened from the outer peripheral side to fix the other end of the cylindrical protective body 64 to the cold-shrinkable tube unit 10a.
(5) Enclose the normal temperature shrinkable tube unit 10a in the bag sheet 66.

  In the room temperature shrinkable tube unit package 10, the outer peripheral protector 62, the cylindrical protector 64, the bag sheet 66, and the adhesive tapes 68 and 70 constitute a packing material 10 b.

  In this example, the cold-shrinkable tube unit package 10 is held by a holding member so as not to move in the cardboard box (storage container) 12. The holding member of this example includes four corrugated paper block 14 that presses both ends in the longitudinal direction of the tube 2 from the left and right, and two corrugated paper press plates 16 that press the entire longitudinal direction of the tube 2 from above and below. . A cutout hole 18 into which the large diameter portion of the tube 2 and a part of the taper portion 3 are inserted is formed in the holding plate 16. Note that the cold-shrinkable tube unit housing of this example may be filled with a cushioning material 20 in the gap in the housing container 12 as necessary (the same applies to the following embodiments). However, it is preferable that the buffer material 20 is not in contact with the diameter-expanding member 4. The blocks 14 and 14 arranged to face the radial direction of the tube 2 are in contact with the inner surface of the cardboard box 12 and are provided so that the interval does not change in the radial direction of the tube 2. Further, the presser plate 16 is fixed to the block 14 so that the interval thereof does not change in the radial direction of the tube 2.

( Reference Example 2 )
Figure 3 shows an implementation form of the cold shrink tube unit container according to the reference example 2, (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view. Since the storage body of this example is the same as the storage body of the first embodiment except that the configuration of the holding member is different, the same reference numerals are given to the same components in FIG. Description is omitted.

  The holding member of this example is composed of four corrugated cardboard thick plate-like blocks 22 that hold the entire circumference of the tapered portion 3 at both ends in the longitudinal direction of the tube 2 from above and below. The thick block 22 is formed with a semicircular recess 23 into which both ends of the tube 2 in the longitudinal direction are inserted. The block 22 is fixed to the cardboard box 12 so that the interval does not change in the radial direction of the tube 2.

( Reference Example 3 )
Figure 4 shows an implementation form of the cold shrink tube unit housing body according to Reference Example 3, (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view. The storage body of this example is the same as the storage body of the first embodiment except that the configuration of the holding member is different. Therefore, in FIG. 4, the same components as those in FIG. Description is omitted.

  The holding member of this example includes eight corrugated paper blocks 24 that hold down the tapered portions 3 at both ends in the longitudinal direction of the tube 2 from the top, bottom, left and right. The block 24 is formed with an arcuate recess 25 into which both ends of the tube 2 in the longitudinal direction are inserted. The block 24 is disposed so as to abut on the inner surfaces of the eight corners of the cardboard box 12 so that the position and interval of the tube 2 do not change in the radial direction.

( Reference Example 4 )
Figure 5 shows the implementation form of the cold shrink tube unit housing body according to Reference Example 4, (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view. The storage body of this example is the same as the storage body of the first embodiment except that the configuration of the holding member is different. Therefore, in FIG. 5, the same components as those in FIG. Description is omitted.

  The holding member of the present example includes a corrugated cardboard structure 34 having a thick plate portion 28 on which the tube 2 is placed and a protruding plate portion 32 that forms an insertion portion 30 into which the tapered portion 3 of the tube 2 is inserted. And a cardboard thick plate 36 for pressing the large diameter portion from above. The pair of projecting plate portions 32 are provided to face each other so as to sandwich the vicinity of the center of the tapered portion 3 of the tube 2. The protruding plate portion 32 is fixed to the thick plate portion 28 so that the position thereof does not change in the radial direction of the tube 2.

( Reference Example 5 )
Figure 6 shows an implementation form of the cold shrink tube unit container according to the reference example. 5, (a) shows the schematic front cross-sectional view, (b) is a schematic side sectional view. Since the storage body of this example is the same as the storage body of the first embodiment except that the configuration of the holding member is different, in FIG. 6, the same components as those in FIG. Description is omitted.

  The holding member of this example includes a corrugated cardboard thick plate 38 on which the tube 2 is placed, a corrugated cardboard thick plate 40 that holds the large diameter portion of the tube 2 from above, both longitudinal ends of the tube 2 and a cardboard box. 12 corrugated paper cylinders 42 disposed around the diameter-expanding member 4 between the inner surface 12 and two corrugated paper blocks 44 supporting the cylindrical body 42 from below. The cylindrical body 42 does not change the interval (diameter) in the radial direction of the tube 2.

( First embodiment )
FIG. 7 shows a sixth embodiment of the cold-shrinkable tube unit housing according to the present invention, in which (a) is a schematic front sectional view and (b) is a schematic side sectional view. Since the storage body of this example is the same as the storage body of the first embodiment except that the configuration of the holding member is different, the same reference numerals are assigned to the same components in FIG. Description is omitted.

  The holding member of this example includes eight corrugated paper pressing members 46 that press the entire circumference of the tapered portion 3 at both ends in the longitudinal direction of the tube 2 from the top, bottom, left and right. The pressing member 46 includes a base portion 48 that contacts the inner surface of the end portion of the cardboard box 12, a pressing portion 50 that contacts the tapered portion 3 of the tube 2, and an intermediate portion 52 that connects the base portion 48 and the pressing portion 50. Four pressing members 46 arranged at each end in the tube axis direction of the cardboard box 12 are configured such that their positions and intervals in the radial direction of the tube 2 do not change.

  In the example of FIG. 7, as shown in FIG. 8, a corrugated paper structure 54 on which the tube 2 is placed may be used in combination. The structure 54 has an insertion portion 56 having a substantially semicircular cross section into which the large diameter portion of the tube 2 is inserted.

( Reference Example 6 )
Figure 9 shows a implementation form of the cold shrink tube unit housing body according to Reference Example 6, (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view, (c) is a perspective view of the block 58 It is. The storage body of this example is the same as that of the first embodiment except that the configuration of the holding member is different, and that the tapered portion is not formed at both longitudinal ends of the tube 2 and the tube 2 is substantially cylindrical. Since it is the same as the storage body, the same reference numerals in FIG. 9 denote the same components as in FIG. 1, and a description thereof will be omitted.

  The holding member of this example is composed of eight corrugated paper blocks 58 that hold both ends in the longitudinal direction of the tube 2 from the top, bottom, left and right. The block 58 has a substantially rectangular parallelepiped shape, and an arcuate recess 60 into which both ends in the longitudinal direction of the tube 2 are inserted is formed at one corner. And the inner surface of the said recessed part 60 is contacting the longitudinal direction both ends outer peripheral surface 2a of the tube 2, and the longitudinal direction both end surfaces 2b. The block 58 is disposed so as to be in contact with the inner surfaces of the eight corners of the cardboard box 12, and the interval does not change in the radial direction of the tube 2 in a state where the tube unit 10 is housed.

( Reference Example 7 )
Figure 10 shows a implementation form of the cold shrink tube unit housing body according to Reference Example 7, (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view. The storage body of this example is the same as the storage body of the seventh embodiment except that the configuration of the holding member is different. Therefore, in FIG. 10, the same components as those in FIG. Description is omitted.

  The holding member of this example includes four corrugated paper paper blocks 62 that hold the entire circumference of both ends in the longitudinal direction of the tube 2 from above and below. The block 62 is formed with a semicircular recess 64 into which both end portions in the longitudinal direction of the diameter expanding member 4 are inserted in a non-contact state. And the inner edge part of the said recessed part 64 is contacting the longitudinal direction both ends outer peripheral surface 2a of the tube 2, and the longitudinal direction both end surfaces 2b.

The above-described cold-shrinkable tube unit storage body of Reference Example 1 to Reference Example 7 and the cold-shrinkable tube unit storage body of the first embodiment are arranged in the storage container with a holding member that contacts the tube and does not contact the diameter-expanding member. Since the cold shrink tube unit is held by the holding member so as not to move in the storage container, the end of the diameter expanding member hits the inner surface of the storage container during transportation, or the end of the diameter expanding member No load is applied, and therefore, the diameter-expanding member is prevented from collapsing during transportation.

In the above embodiment, the cold-shrinkable tube unit package is housed in the storage container, but the cold-shrinkable tube unit may be housed in the storage container without being packed. In the above embodiment, corrugated paper is used as the material of the holding member .

Shows the implementation form of the cold shrink tube unit housing body according to Reference Example 1, a (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view. It is sectional drawing which shows an example of a normal temperature shrinkable tube unit package. Shows the implementation form of the cold shrink tube unit container according to a reference example 2, is (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view. Shows the implementation form of the cold shrink tube unit housing body according to Reference Example 3, a (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view. Shows the implementation form of the cold shrink tube unit housing body according to Reference Example 4, a (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view. Shows the implementation form of the cold shrink tube unit housing body according to Reference Example 5, is (a) is a schematic front cross-sectional view, (b) is a schematic side sectional view. The 1st Embodiment of the normal temperature shrinkable tube unit storage body concerning the present invention is shown, (a) is a schematic front sectional view and (b) is a schematic side sectional view. The normal temperature shrinkable tube unit storage body using the structure made from corrugated paper in which a tube is mounted is shown, (a) is a schematic front sectional view, (b) is a schematic side sectional view. The embodiment of the cold-shrinkable tube unit storage body concerning the reference example 6 is shown, (a) is a schematic front sectional view, (b) is a schematic side sectional view, and (c) is a perspective view of a block. The embodiment of the cold-shrinkable tube unit storage body according to Reference Example 7 is shown, in which (a) is a schematic front sectional view and (b) is a schematic side sectional view. It is a partial cross section front view which shows an example of a normal temperature shrinkable tube unit. It is a partially expanded sectional view of a diameter-expanding member.

Explanation of symbols

2 Tube 3 Tapered part 4 Expanding member 10 Room temperature shrinkable tube unit package 12 Storage container 14 Block 16 Holding plate 22 Thick plate block 24 Block 34 Structure 36 Thick plate 38 Thick plate 40 Thick plate 42 Cylindrical body 44 Block 46 Member 54 structure 58 block 62 block

Claims (2)

A room temperature shrinkage tube unit that is arranged on the inner peripheral side of the tube and that has a tubular diameter-expanding member that holds the tube in an expanded state and that is housed in a storage container. A shrinkable tube unit housing,
A holding member that contacts the tube and does not contact the diameter-expanding member is disposed in the storage container, and the room temperature shrinkable tube unit is held by the holding member so as not to move in the storage container.
The holding member includes a base portion that contacts the inner surface of the end portion of the storage container formed at one end, a pressing portion that contacts the tapered portion of the tube unit formed at the other end portion, and a base portion that connects the base portion and the pressing portion. A cardboard made of an intermediate portion that connects the pressing portion is formed by bending the length of the base portion of the holding member longer than the pressing member so that the end of the diameter-expanding member does not contact the inner wall of the storage container ,
Further, the tube is formed with tapered portions that are reduced in diameter toward the tip at both ends in the longitudinal direction, and each of the four tubes that hold the outer peripheral surface of the tapered portion at both ends from above, below, left and right. One end of the holding member abuts on the inner peripheral surface of the storage container,
The other end is in contact with the tapered portion of the tube unit, and the holding member is disposed in the storage container so that its position does not change in the radial direction of the tube, and the radial direction of the tube and all SANYO spacing of the holding members to each other in the axial direction is kept unchanged,
Furthermore, the tube is made of a structure formed by bending a corrugated cardboard having an insertion portion having a substantially semicircular cross section on which the large-diameter portion of the tube is placed as the holding member so as to be inscribed in the inner peripheral surface of the storage container. A room temperature shrinkable tube unit storage body characterized by holding . The cold shrink tube unit, and received in the receiving container as the cold shrink tube unit pack which is packed by the packing material, the holding member in contact with the tapered portion and the large diameter portion of the tube, each said tube packaging The room-temperature-shrinkable tube unit storage body according to claim 1, wherein the tube unit is held in contact with each other indirectly so as not to move in the storage container.

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