JP6022525B2 - Wire connection sleeve - Google Patents

Description

  The present invention relates to a wire connecting sleeve for electrically connecting two covered wires.

  Conventionally, as an electric wire connecting sleeve for electrically connecting two covered electric wires, a conductive sleeve main body having two through holes parallel in the penetrating direction and the inside of the two through holes are arranged. In addition, a wire connecting sleeve including a conductive blade body having a plurality of blades is known (for example, see Patent Document 1). The sleeve for wire connection described in Patent Document 1 is compressed with a compression tool in a state where two covered wires are inserted into two through holes in parallel. Thereby, the some blade of a blade body penetrates the coating | cover of a covered electric wire, is crimped | bonded to the core wire inside a covered electric wire, and is electrically connected to the core wire inside a covered electric wire. In this way, the two covered electric wires are electrically connected via the conductive blade body and the conductive sleeve body.

Japanese Patent Laid-Open No. 10-294136

  In the electric wire connecting sleeve described in Patent Document 1, when the sleeve main body is compressed with a compression tool, the portion to be compressed in the sleeve main body may be shifted. If the portion to be compressed in the sleeve body is shifted, there is a possibility that the plurality of blades of the blade body are not securely crimped to the core wire inside the covered electric wire and the two covered electric wires cannot be reliably electrically connected. is there.

  An object of the present invention is to provide an electric wire connecting sleeve capable of reliably connecting two covered electric wires without shifting a portion to be compressed.

  (1) An electric wire connecting sleeve according to the present invention is an electric wire connecting sleeve for electrically connecting two covered electric wires, having a metal layer and extending in a predetermined direction, A sleeve body provided at both ends in the longitudinal direction and having a pair of insertion holes into which each of the two covered electric wires can be inserted, and an inner surface of the sleeve body, protruding from the inner surface of the sleeve body and facing each other. At least a pair of metal protrusions arranged in a manner that are connected to the metal layer and penetrate the sheath of the covered electric wire when the sleeve body is compressed, and the core wire inside the covered electric wire and the metal layer A pair of metal protrusions that are electrically connected to each other, and provided on the outer surface of the sleeve main body, and arranged so as to sandwich a compression point corresponding to the pair of metal protrusions in the longitudinal direction to display the compression point Together provided with at least two protrusions for such sites to be compressed does not deviate.

  (2) It is preferably an annular protrusion having an annularly pointed tip, or a pointed protrusion having a needle-like tip.

  ADVANTAGE OF THE INVENTION According to this invention, the sleeve for electric wire connection which can connect the two covered electric wires reliably can be provided so that the site | part to compress may not shift | deviate.

It is a perspective view which shows the structure of the sleeve 1 for electric wire connection in 1st Embodiment of this invention. It is sectional drawing at the time of non-compression of the sleeve 1 for electric wire connection in 1st Embodiment, (a) is a figure which shows the whole structure, (b) is a figure which shows the shape of the metal protrusion 41. FIG. It is sectional drawing at the time of compression of the sleeve 1 for electric wire connection in 1st Embodiment. It is sectional drawing at the time of the non-compression of 1 A of wire connection sleeves in 2nd Embodiment, (a) is a figure which shows the whole structure, (b) is a figure which shows the shape of the metal protrusion 42. FIG.

  Hereinafter, the wire connection sleeve 1 according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a configuration of a wire connecting sleeve 1 in the first embodiment of the present invention. 2A and 2B are cross-sectional views of the wire connecting sleeve 1 in the first embodiment when not compressed, wherein FIG. 2A is a diagram illustrating the overall configuration, and FIG. 2B is a diagram illustrating the shape of the metal protrusion 41. is there. FIG. 3 is a cross-sectional view of the wire connection sleeve 1 in the first embodiment when compressed.

  As shown in FIGS. 1 and 2, the wire connecting sleeve 1 of the first embodiment has two covered wires 10, 10 arranged in a straight line, and is interposed between the two covered wires 10, 10. Is done. The wire connection sleeve 1 is used to electrically connect the two covered wires 10 and 10 in a straight line.

  The two covered electric wires 10 and 10 each extend in a predetermined direction. The two covered electric wires 10 and 10 each have a core wire 12 arranged on the inner side and a coating 11 arranged on the outer side. In the present embodiment, the core wire 12 is a stranded wire formed by twisting a plurality of wires formed of a copper material. The covering 11 covers the outer surface of the core wire 12.

  The wire connecting sleeve 1 includes a sleeve body 2 as shown in FIGS. The sleeve body 2 is cylindrical and extends in a predetermined direction. The sleeve body 2 has a through hole 21. The through hole 21 is configured with the inner surface of the sleeve body 2 as an outer shell, and penetrates the sleeve body 2 in the longitudinal direction. Both ends in the longitudinal direction of the through-hole 21 are configured as a pair of insertion holes 211 and 211 into which the two covered electric wires 10 and 10 can be respectively inserted.

The sleeve main body 2 includes an over-insertion preventing portion 5 and a wire pull-out preventing compression portion 33.
The over-insertion preventing portion 5 is provided at the approximate center in the longitudinal direction of the sleeve body 2. The over-insertion preventing portion 5 is recessed from the outer surface of the sleeve body 2 and protrudes to the inner side of the sleeve body 2. The over-insertion preventing portion 5 is provided so that one covered electric wire 10 inserted from the insertion hole 211 on one side of the sleeve body 2 does not enter the other side of the sleeve body 2 or the insertion hole on the other side of the sleeve body 2. The other covered electric wire 10 inserted from 211 protrudes to the inner side of the sleeve main body 2 so as not to enter one side of the sleeve main body 2.

  In the longitudinal direction, the sleeve body 2 has a symmetrical shape on one side and the other side with the over-insertion preventing portion 5 as the center. In the longitudinal direction of the sleeve body 2, one covered electric wire 10 is inserted on one side with respect to the over-insertion preventing portion 5, and the other covered electric wire 10 is inserted on the other side with respect to the over-insertion preventing portion 5. Is done.

  The wire pull-out preventing compression portions 33 are provided on the inner side from both ends in the longitudinal direction of the sleeve main body 2. The electric wire disconnection preventing compression portion 33 is a portion that is compressed in a state where the covered electric wire 10 is inserted into the sleeve body 2. By compressing the electric wire disconnection preventing compression portion 33 with a compression tool (not shown), the covered electric wire 10 is suppressed from coming off the sleeve body 2.

The sleeve body 2 has a metal layer 4 and an insulating layer 3 from the inside toward the outside.
The metal layer 4 is a cylindrical layer having conductivity. The material of the metal layer 4 is, for example, copper. The inner surface of the metal layer 4 constitutes the outline of the through hole 21.

  A plurality of metal protrusions 41 are provided on the inner surface of the metal layer 4. The plurality of metal protrusions 41 protrude from the inner surface of the metal layer 4 to the through hole 21 side (inside the sleeve body 2). The plurality of metal protrusions 41 are electrically connected to the metal layer 4. As shown in FIG. 2A, the overall shape of the metal protrusion 41 is a substantially conical shape with a sharp tip. Specifically, the metal protrusion 41 is a pointed protrusion having a needle-like tip.

  The material of the plurality of metal protrusions 41 is a conductive material. The material of the plurality of metal protrusions 41 is, for example, copper.

  The plurality of metal projections 41 are configured such that at least a pair of metal projections 41 are arranged on the inner surface of the sleeve body 2 so as to be spaced apart from each other in the longitudinal direction of the sleeve body 2. At least the pair of metal protrusions 41 are disposed to face each other at a predetermined position in the longitudinal direction of the sleeve body 2 so as to be spaced apart from each other in the circumferential direction. The distance between the tips of the pair of opposing metal protrusions 41 and 41 is such that the covered wire 10 is not prevented from being inserted into the insertion hole 211 when the covered wire 10 is inserted into the insertion hole 211 of the sleeve body 2. The distance to be separated.

  The insulating layer 3 covers the outer surface of the metal layer 4. The insulating layer 3 is a cylindrical layer and is an insulating layer. The outer surface of the insulating layer 3 is exposed to the outside of the sleeve body 2.

  A plurality of convex portions 31 are provided on the outer surface of the insulating layer 3. The plurality of convex portions 31 protrude from the outer surface of the insulating layer 3 toward the outside of the sleeve body 2. In the present embodiment, the cross-sectional shape of the plurality of convex portions 31 is a protruding shape having a smooth curved surface at the top. The cross-sectional shape of the plurality of convex portions 31 may be, for example, a substantially semicircular shape, a substantially elliptical shape, a substantially trapezoidal shape, or the like.

  The material of the plurality of convex portions 31 may be the same material as the material of the insulating layer 3 of the sleeve body 2 or may be a material different from the material of the sleeve body 2. For example, as a material of the convex part 31, various resin materials, rubber materials, etc. can be mentioned.

  The plurality of convex portions 31 are configured by arranging a plurality of sets of at least two convex portions 31 spaced apart in the longitudinal direction on the outer surface of the sleeve body 2 in the longitudinal direction. In the present embodiment, two convex portions 31 are arranged at a predetermined position in the longitudinal direction of the sleeve body 2 so as to be separated from each other in the circumferential direction. The two convex portions 31 that are separated in the circumferential direction are arranged at positions that face each other.

  The two convex portions 31 that are separated in the longitudinal direction are arranged on the outer surface of the sleeve body 2 so as to sandwich the compression portion 32 in the longitudinal direction of the sleeve body 2, and display the compression portion 32. The compression location 32 is a portion corresponding to a pair of metal protrusions 41 provided on the inner surface of the sleeve body 2 in the longitudinal direction of the sleeve body 2. That is, the compression location 32 when compressing the sleeve body 2 is displayed by being sandwiched between the two convex portions 31 that are separated in the longitudinal direction.

  Next, a method of connecting the two covered electric wires 10 and 10 using the sleeve body 2 will be described. First, from the state shown in FIG. 1, the two covered electric wires 10 and 10 are inserted into the pair of insertion holes 211 and 211 of the sleeve body 2. Then, as shown in FIG. 2, in a state where the two covered electric wires 10 and 10 are inserted into the sleeve body 2, each of the plurality of compression points 32 is attached to the sleeve body 2 using a compression tool (not shown). Compresses radially inward. Further, at each position closer to the inside from both ends in the longitudinal direction of the sleeve main body 2, the wire pull-out prevention compression portion 33 is directed to the inner side in the radial direction by using a compression tool (not shown). Compress. By compressing the electric wire disconnection preventing compression portion 33, it is possible to suppress the covered electric wire 10 from coming off from the sleeve body 2.

  As a result, as shown in FIG. 3, the pair of metal protrusions 41 wrap the covering 11 of the covered wire 10 in a state where the two covered wires 10, 10 are fixed to the sleeve body 2 in the wire pulling prevention compression portion 33. It penetrates and is crimped to the core wire 12 inside the covered electric wire 10. In this embodiment, for example, a total of six places are performed along the longitudinal direction of the sleeve body 2 to compress the metal protrusions 41 corresponding to the compression places 32.

  By displaying the compression location 32 between the two convex portions 31 spaced apart in the longitudinal direction of the sleeve body 2, the compression location 32 can be easily recognized when the sleeve body 2 is compressed. ), The compressed portion 32 can be reliably compressed. Thereby, the site | part compressed in the sleeve main body 2 can be prevented from shifting | deviating.

  Here, the core wire 12 of the covered electric wire 10 is a stranded wire. The pair of metal protrusions 41 are pointed protrusions having needle-pointed tips. Therefore, the pair of metal protrusions 41 enters the stranded wire in the core wire 12 and is securely crimped to the core wire 12 of the covered electric wire 10. Therefore, the pair of metal protrusions 41 electrically and reliably connect the core wire 12 of the covered electric wire 10 and the metal layer 4 of the sleeve body 2. Then, the two covered electric wires 10 and 10 are electrically connected reliably via the metal layer 4.

According to the wire connection sleeve 1 of the first embodiment of the present invention, the following effects are exhibited.
(1) At least two convex portions 31 are arranged in the longitudinal direction so as to sandwich the compression portion 32 corresponding to the pair of metal protrusions 41 so as to display the compression portion 32 and prevent the portion to be compressed from shifting. Prepare. Therefore, when the sleeve body 2 is compressed, the compressed portion 32 can be easily recognized, so that the compressed portion 32 can be reliably compressed with a compression tool (not shown). Thereby, the site | part compressed in the sleeve main body 2 can be prevented from shifting | deviating. Therefore, the two covered electric wires 10 and 10 can be electrically connected reliably.
(2) The metal protrusion 41 is a pointed protrusion having a needle-pointed tip. The core wire 12 of the covered electric wire 10 is a stranded wire. Therefore, the metal protrusion 41 can be reliably crimped to the core wire 12 of the covered electric wire 10.

  Next, a wire connecting sleeve 1A according to a second embodiment of the present invention will be described with reference to the drawings. In the second embodiment, differences from the first embodiment will be described. The description of the first embodiment is used for points that are not described in the second embodiment. 4A and 4B are cross-sectional views of the wire connection sleeve 1A according to the second embodiment when not compressed, wherein FIG. 4A is a diagram illustrating the overall configuration, and FIG. 4B is a diagram illustrating the shape of the metal protrusion 42. is there.

  As shown in FIG. 4, the shape of the metal protrusion 42 of the second embodiment is different from the shape of the metal protrusion 41 of the first embodiment. The core wire 12A of the two covered electric wires 10A used in the second embodiment is a single wire, whereas the core wire 12 of the two covered electric wires 10A used in the first embodiment is a stranded wire. It is different in point.

As shown in FIG. 4B, the overall shape of the metal protrusion 42 of the second embodiment is a cylindrical shape in which a portion on the inner side of the outer edge on the tip side is recessed. Specifically, the metal protrusion 42 is an annular protrusion having an annularly sharpened tip at the outer edge of the columnar shape.
Further, the core wire 12A of the two covered electric wires 10A used in the second embodiment is a single wire.

Next, a method of connecting the two covered electric wires 10A and 10A using the sleeve main body 2A of the second embodiment configured as described above will be described.
As in the first embodiment, as shown in FIG. 4, a plurality of compression points 32 are respectively used with a compression tool (not shown) in a state where the two covered electric wires 10 </ b> A and 10 </ b> A are inserted into the sleeve body 2 </ b> A. The sleeve body 2A is compressed toward the inside in the radial direction. Further, in order to prevent the covered electric wire 10A from coming out of the sleeve main body 2A at each position closer to the inside from both ends in the longitudinal direction of the sleeve main body 2A, the electric wire removal preventing compression portion 33 is provided with a compression tool (not shown). Is used to compress the sleeve body 2A toward the inside in the radial direction.

  Here, the core wire 12 of the covered electric wire 10A is a single wire. The pair of metal protrusions 42 is an annular protrusion having an annularly pointed tip. Therefore, the pair of metal protrusions 42 are securely crimped to the core wire 12 </ b> A of the covered electric wire 10 </ b> A with the annularly pointed tips coming into contact with the outer surface of the single wire. Accordingly, the pair of metal protrusions 42 electrically and reliably connect the core wire 12A of the covered electric wire 10A and the metal layer 4 of the sleeve body 2A. The two covered electric wires 10 </ b> A and 10 </ b> A are electrically and reliably connected via the metal layer 4.

According to the wire connecting sleeve 1A of the second embodiment of the present invention, the same effect as (1) of the first embodiment is exhibited, and the following effect is also achieved.
(3) The metal protrusion 42 is an annular protrusion having an annularly pointed tip. The core wire 12A of the covered electric wire 10A is a single wire. Therefore, the metal protrusion 42 can be reliably crimped to the core wire 12A of the covered electric wire 10A.

As mentioned above, although preferred embodiment was described, this invention can be implemented with a various form, without being limited to embodiment mentioned above.
For example, in the above-described embodiment, the sleeve body 2 is configured in a cylindrical shape, but is not limited thereto, and may be configured with a C-shaped sleeve.

  Moreover, in the said embodiment, although the two metal protrusions 41 were provided in the circumferential direction of the internal peripheral surface of the sleeve main body 2, it is not limited to this. For example, three or more metal protrusions 41 may be provided in the circumferential direction of the inner peripheral surface of the sleeve body 2.

  Moreover, in the said embodiment, although the metal protrusion 41 was made into the peak protrusion or the annular | circular protrusion, it is not limited to this. For example, the metal protrusion 41 may be composed of a plurality of needle-like protrusions.

  Moreover, in the said embodiment, although the pair of insertion holes 211 and 211 of the sleeve main body 2 were penetrated and comprised by the through-hole 21, it is not limited to this. The pair of insertion holes 211 and 211 may be divided into one side and the other side of the sleeve body 2 via an intermediate wall.

DESCRIPTION OF SYMBOLS 1, 1A Wire connection sleeve 2, 2A Sleeve main body 4 Metal layer 10 Covered electric wire 31 Convex part 32 Compression location 41 Metal protrusion 42 Metal protrusion 211 Insertion hole

Claims (2)

A wire connection sleeve for electrically connecting two covered wires,
A sleeve main body having a metal layer and extending in a predetermined direction, the sleeve main body having a pair of insertion holes provided at both ends in the longitudinal direction and capable of inserting each of the two covered electric wires;
A pair of metal protrusions provided on the inner surface of the sleeve main body, protruding from the inner surface of the sleeve main body and arranged opposite to each other, connected to the metal layer, and the sleeve main body is compressed A pair of metal protrusions that penetrate the coating of the covered electric wire and electrically connect the core wire inside the covered electric wire and the metal layer,
At least 2 provided on the outer surface of the sleeve main body and arranged to sandwich the compressed portion corresponding to the pair of metal protrusions in the longitudinal direction so as to display the compressed portion and to prevent the compressed portion from shifting. Two convex parts,
An electric wire connecting sleeve comprising: an over-insertion preventing portion that is recessed from the outer surface of the sleeve main body at the center in the longitudinal direction of the sleeve main body and protrudes to the inner side of the sleeve main body to prevent over-insertion of the covered electric wire. . 2. The wire connection sleeve according to claim 1, wherein the metal protrusion is an annular protrusion having an annularly pointed tip, or a pointed protrusion having a needle-like pointed tip.

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