JP4990011B2 - Wire connection method and wire connection compression die used therefor - Google Patents

Description

The present invention relates to an electric wire connecting method using an appropriate electric wire connecting compression sleeve, such as an electric wire main line, a main line and a branch line, and an electric wire connecting compression die used in this method.

  In order to reinforce the wire gripping force of the compression sleeve for wire connection that grips two wires such as a main wire and a branch wire of the wire, as shown in FIGS. 13 and 14, the plate-shaped sleeve body is folded and connected. A compression sleeve provided with gripping grooves for each of the electric wires 2 and 3; the electric wires 2 and 3 are inserted into the respective gripping grooves and both sides of the compression sleeve 1 are wound around the outer periphery of the electric wires 2 and 3; Furthermore, a wire connection structure has been developed in which the compression sleeve 1 is bent in a wave shape together with the gripped wires 2 and 3 in the longitudinal direction of the electric wires 2 and 3 to provide a wave-like protrusion.

As shown in FIGS. 15 and 16, the compression die for realizing the wire connection structure is composed of a male die 5 and a female die 6, and the male die 5 is provided with a protrusion 7 on one side surface 5a. In addition, two cross-sectional curved grooves 8 are provided on the upper surface of the projecting portion 7, and the central portions in the longitudinal direction of the curved grooves 8 are raised up to the upper surface of the projecting portion while forming curved edges, respectively, and wavy convex portions 9 are respectively provided. And between these wavelike convex parts 9, the center base part 10 which is higher than these wavelike convex parts 9, and a plane is a substantially rhombus is provided. On the other hand, the female die 6 is provided with a concave portion 11 into which the protruding portion 7 of the male die 5 can be inserted on one side surface 6a, and two cross-section curved grooves 12 are provided on the bottom surface of the concave portion 11 in the longitudinal direction. The corrugated grooves 13 are provided in the center portions of the cross-sectional curved grooves 12 in the longitudinal direction. Then, as shown in FIG. 17, the compression sleeve 1 is compressed together with the electric wires 2 and 3 by fitting the recess 11 of the female die 6 into the protrusion 7 of the male die 5.

  However, when the electric wires 2 and 3 are bent into a wave shape together with the compression sleeve 1 with these compression dies, the connected electric wires 2 and 3 are bent around the wave-like protrusion 4 as shown in FIG. Cannot connect to. Therefore, it is difficult to cover the wire compression connection part with an insulating cover.

Therefore, as shown in Patent Document 1, the cross-sectional curved groove of each die is warped in the opposite direction to the bending direction from each corrugated convex portion 9 and each corrugated concave groove 13 toward both ends in the longitudinal direction. It was considered to connect using a die.
Japanese Patent No. 2655396

The thing of this patent document 1 curves in the waveform in the longitudinal direction of a sleeve and the electric wire to connect, and this becomes straight. However, the configuration of the male die 5 and the female die 6 is complicated and difficult to manufacture, and the cost for manufacturing the die is high. Moreover, since the compression die used in this method has a small number of corrugated irregularities formed by a single compression, the contact between the sleeve and the electric wire may be incomplete.

Therefore, in consideration of these conventional techniques, the present invention connects the sleeve and the electric wire in a straight line even if the compression die having a simple structure forms a waveform compression in the longitudinal direction of the sleeve and the electric wire to be connected. An electric wire connection method and a compression die used therefor, in which a plurality of corrugated compressions are formed in the longitudinal direction of the sleeve in a single compression, and the contact between the sleeve and the electric wire becomes more reliable, and an attempt is made to solve the above problems. To do.

According to the first aspect of the present invention, a compression sleeve in which a grip hole for a connecting wire is formed is provided in a pipe-shaped sleeve body, each wire is inserted into the grip hole on both sides of the compression sleeve, and the outer periphery of each wire is compressed by a compression die. In the electric wire connecting method of compressing the compression sleeve and bending it into a wavy shape with the gripped electric wire, the compression die comprises a male die and a female die, and the male die is provided with a single cross-sectional curved groove on the joint surface, The cross-sectional curved groove is provided with a first protrusion that crosses the groove at the center and lifts to the vicinity of the joint surface, and has a second protrusion that crosses the groove at both ends and lifts in the direction of the joint surface. The female die is provided with a single cross-sectionally curved groove on the joint surface, the cross-sectionally curved groove is deeply concavely curved at the center, and a third protrusion is formed with both ends raised in the joint surface direction. Part The curved portion is configured to face the first projecting portion of the male die, and the third projecting portions at both ends are positioned to face the concave portion between the first projecting portion and the second projecting portion of the male die. When the compression sleeve holding the electric wire is compressed with the compression die, the first protruding portion of the male die, the concave curved portion of the central portion of the female die, and the third protruding portion of the female die, A compression sleeve at a position outside the recess between the first protrusion and the second protrusion of the male die and the second protrusion of the male die and the third protrusion of the female die. the compression sleeve recessed held down, and the wire connection method of maintaining a straight while bending the plurality of corrugated with the grasped wire.

According to a second aspect of the present invention, the compression die is composed of a male die and a female die, and the male die is provided with a single section curved groove on the joint surface, and the section curved groove crosses the groove at the center. A first protrusion raised to the vicinity of the joining surface, a second protrusion raised across the groove at both end portions and raised in the joining surface direction, and the female die having a single cross section on the joining surface A curved groove is provided, and the cross-sectional curved groove has a deep concave curve at the center, and forms a third projecting portion whose both ends are raised in the direction of the joint surface, and the concave curve at the center is the first of the male die. The compression sleeve that is configured to be opposed to the protrusion, and that the third protrusions at both ends are opposite to the recess between the first protrusion and the second protrusion of the male die, and grips the electric wire. When compressed with a compression die, the first protrusion of the male die and the female die A concave curved portion at the center of the die, a third protrusion of the female die, a recess between the first and second protrusions of the male die, and a second protrusion and a female of the male die. An electric wire capable of maintaining a straight line while pressing the compression sleeves at respective positions outward from the third projecting portion of the die and bending the compression sleeve together with the grasped electric wires into a plurality of undulations. A compression die for connection was used.

The invention of claim 3 is provided with a compression sleeve in which a plurality of gripping grooves for a plurality of electric wires to be connected are formed in parallel by bending a plate-shaped sleeve main body, and each wire is inserted into each gripping groove of the compression sleeve for compression. In the electric wire connection method of compressing the compression sleeve with a die and bending it into a wave shape together with the grasped electric wire, the compression die is composed of a male die and a female die, and the male die has a plurality of cross-sectional curved grooves on the joint surface. Each of the cross-sectional curved grooves is provided with a first projecting portion that crosses the groove at the center and lifts up to the vicinity of the joint surface, and that crosses the groove at both ends and lifts in the direction of the joint surface. 2 protrusions are provided, and the female die is provided with a plurality of cross-sectionally curved grooves at positions corresponding to the plurality of cross-sectionally curved grooves of the male die on the joint surface, and each of the cross-sectionally curved grooves has a deep central portion. Concave bay And the both ends form a third projecting portion raised in the direction of the joining surface, and the concave concave portion in the center portion opposes the first projecting portion of the corresponding cross-sectional curved groove of the male die, and The three projecting portions are configured to face the recesses between the first projecting portion and the second projecting portion of the corresponding cross-sectional curved groove of the male die, and the compression sleeve holding the plurality of electric wires is When compressed , the first protruding portion of the male die and the concave curved portion of the central portion of the female die, the third protruding portion of the female die, the first protruding portion and the second protruding portion of the male die the recess and the second projection and the female third protrusion recessed pressing the compression sleeve of the respective point of the position of the outward than in the compression sleeve of the die of the male die between and gripped It was set as the electric wire connection method which maintains a linear form , bend | folds with several electric waves with an electric wire.

Further, the invention of claim 4 comprises a male die and a female die, and the male die is provided with a plurality of cross-sectional curved grooves on the joint surface, and each of the cross-sectional curved grooves crosses the groove at the central portion. A first protrusion raised to the vicinity of the joining surface, and a second protrusion raised across the groove at both ends and raised in the joining surface direction, wherein the female die is the male die of the joining surface A plurality of cross-sectionally curved grooves are provided at positions corresponding to the plurality of cross-sectionally curved grooves of the die, and each of the cross-sectionally curved grooves is deeply concavely curved at the center, and both end portions are raised in the joining surface direction. And the concave concave portion at the center is opposed to the first projecting portion of the corresponding cross-sectional curved groove of the male die, and the third projecting portions at both ends are the first of the corresponding cross-sectional curved groove of the male die. It is configured to be positioned opposite the concave portions between the first protrusion and a second protrusion, a plate Formed by bending the sleeve body, when the compression sleeve gripping the plurality of electric wires to each gripping grooves of the sleeve body is compressed in the compression die, the center of the female die and the first projecting portion of the male die A concave curved portion of the female die, a concave portion between the third projecting portion of the female die and the first projecting portion and the second projecting portion of the male die, and a second projecting portion of the male die and the female die. Compression for electric wire connection that can maintain the linear shape while pressing the compression sleeves at the respective positions outside the third projecting portion and bending the compression sleeves together with the gripped electric wires. Dice.

According to the first aspect of the present invention, when two electric wires are connected in a straight line, a wire connecting sleeve is compressed into a corrugated shape using a die having an extremely simple structure, and the sleeve and the connected electric wires are aligned in a straight line. Can be connected. In this way, the sleeve does not bend even in the case of waveform compression, so that the insulating cover can be smoothly inserted after the wire compression connection. Moreover, since the said wire connection sleeve is normally used for the electric wire installation which can be touched by a human eye, there exists an effect that a public aesthetics can be ensured because a wire connection part becomes a straight state. Further, according to the compression die used for this connection, a plurality of waveform compressions are formed in the longitudinal direction of the sleeve by a single compression, so that the contact between the sleeve and the electric wire is more surely strengthened. Moreover, even with such a strong connection, the compressive force on the electric wire can be made smaller than that of the conventional normal compression, and therefore there is little damage to the electric wire.

Further, the die of the invention of claim 2 has an extremely simple structure and is easy to manufacture. Further, since the size and the like are not different from those of a conventional compression die, a compression tool that has been conventionally used can be used, which is versatile and convenient.

According to the invention of claim 3, even when a plurality of electric wires are connected in parallel, such as a connection between a trunk line and a branch line, the wire connecting sleeve is compressed into a waveform using a die having a very simple structure. In addition, these sleeves and the connected electric wires can be connected in a straight line. In this way, even in the case of waveform compression, the sleeve does not bend and maintains a straight shape, so that the insulating cover can be smoothly inserted after the wire compression connection. Moreover, since the said wire connection sleeve is normally used for the electric wire installation which can be touched by a human eye, there exists an effect that a public aesthetics can be ensured because a wire connection part becomes a straight state. Further, according to the compression die used for this connection, a plurality of waveform compressions are formed in the longitudinal direction of the sleeve by a single compression, so that the contact between the sleeve and the electric wire is more surely strengthened. Moreover, even with such a strong connection, the compressive force on the electric wire can be made smaller than that of the conventional normal compression, and therefore there is little damage to the electric wire. In addition, the die of the invention of claim 4 has a very simple structure, is easy to manufacture, and the size and the like are the same as those of the conventional compression die, so that a conventionally used compression tool can be used. There is convenient.

  According to the present invention, a compression sleeve in which a grip hole for a connecting wire is formed is provided in a pipe-shaped sleeve body, each wire is inserted into a grip hole on both sides of the compression sleeve, and a compression sleeve is provided on the outer periphery of each wire by a compression die. In the electric wire connection method of compressing the wire and bending it with the gripped electric wire, the compression die is composed of a male die and a female die, and the male die is provided with a single cross-sectional curved groove on the joint surface, and the cross-sectional curve The groove is provided with a first protrusion that crosses the groove at the center and lifts to the vicinity of the joint surface, and a second protrusion that crosses the groove at both ends and lifts in the direction of the joint, The female die is provided with a single cross-sectionally curved groove on the joint surface, and the cross-sectionally curved groove is deeply concavely curved at the center, forming a third projecting portion whose both ends are raised in the joint surface direction, and Concave The curved portion is opposed to the first projecting portion of the male die, and the third projecting portions of both end portions are positioned to face the concave portion between the first projecting portion and the second projecting portion of the male die. When the compression sleeve that is configured and grips the electric wire is compressed by the compression die, the compression sleeve is compressed in a wave shape together with the gripped electric wire without bending.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 2 shows a compression sleeve 20 for connecting an electric wire used in the method of the present invention. The compression sleeve 20 for connecting an electric wire has a substantially pipe shape and is provided with a spacer 22 at the center of the through hole 21. Both end openings are tapered.

FIG. 3 is a longitudinal sectional view of the compression die 25 of the present invention, and FIG. 4 is a side view. FIG. 5 is a perspective view of the male die of the compression sleeve 25, and FIG. 6 is a perspective view of the female die. The compression die 25 includes a male die 26 and a female die 27. The male die 26 is provided with a single cross-sectional curved groove 28 on a joint surface 26a with the female die 27, and the cross-sectional curved groove. 28 is provided with a curved first projecting portion 29 that crosses the groove at the center in the longitudinal direction of 28 and is raised to the vicinity of the joint surface 26a. In addition, a curved second protrusion 30 is provided. However, the second protrusion 30 is slightly lower than the first protrusion 29.

The female die 27 is provided with a single cross-sectionally curved groove 31 on the joint surface 27 a with the male die 26, and the central portion in the longitudinal direction of the cross-sectionally curved groove 31 is deeply concavely curved to form a concavely curved portion 32. The curved groove 31 has both ends formed in a curved third protruding portion 33 raised in the direction of the joint surface 27a, and the central concave curved portion 32 is formed in the male die 26. The third protrusions 33 at both ends are opposed to the recesses between the first protrusions 29 and the second protrusions 30 of the male die 26. Yes. Therefore, the female die 27 is shorter in the axial direction than the male die 26.

As shown in FIG. 4, the male die 26 and the female die 27 are joined to each other at the joining surface 26a and the joining surface 27a, and are formed in a substantially tubular shape.

In order to connect the wires 34 and 35 with the compression sleeve 20 using the compression die 25, first, as shown in FIG. 7, a compound (not shown) is formed in the through holes 21 on both sides of the wire connection sleeve 20. Then, the core wires of the electric wires 34 and 35 are inserted. Then, the male die 26 and the female die 27 of the compression die 25 are fitted into a compression tool (not shown), and the male die 26 and the female die 27 are applied to the outer periphery of the compression sleeve 20 for compression. Such compression is performed along the outer periphery of the compression sleeve 20 at three locations on one side and six locations on both sides. As a result, as shown in FIG. 8, the compressed sleeve together with the electric wire to be gripped is compressed into a waveform, and the compressed sleeve 20 is compressed without bending.

As shown in FIG. 1, the compression sleeve 20 is compressed by the first protruding portion 29 because the first protruding portion 29 of the male die 26 faces the concave curved portion 32 of the female die 27. And the third protrusion 33 on both ends of the female die 27 is opposed to the recess between the first protrusion 29 and the second protrusion 30 of the male die 26. Therefore, the compression sleeve 20 is pushed by the third projecting portion 33 to be dented, and further, the second of the male die 26 positioned outward from the third projecting portions 33 at both ends of the female die 27. In order to hold down the compression sleeve 20 at the 30 protruding portions, the compression sleeve 20 is compressed into a corrugated shape, but maintains a linear shape. In addition, a plurality of waveforms are formed vertically by a single compression.

Embodiment 2 of the present invention is a case where two electric wires are connected in parallel to the branching compression sleeve of FIG. 11 or FIG. Also in this case, the configuration of the cross-sectional curved grooves of the male die and the female die in the compression die is the same as that of the first embodiment. FIG. 9 shows a male die 36 according to the second embodiment, and two cross-sectional curved grooves 37, 37 are provided side by side on the joint surface 36a, and the shape of each cross-sectional curved groove 37 is the sectional curved groove of the first embodiment. 28. The difference is that the joint surface 36b between the two cross-section curved grooves 37, 37 is lower than the joint surfaces 36a on both sides of the die 36, and the corresponding joint surface 38b of a female die 38 to be described later. A gap is provided between them, and the central flat portion of the compression sleeve 1 is accommodated in the gap.

  FIG. 10 shows a female die 38 according to the second embodiment. The female die 38 is also shorter in the axial direction than the male die 36, and has two cross-section curved grooves 39, 39 on the joint surface 38a. The cross-sectional curved grooves 39 have the same shape and structure as the cross-sectional curved grooves 31 of the first embodiment.

Also in the case of the second embodiment, the electric wires 42 and 43 are inserted into the two electric wire gripping grooves 41 and 41 of the compression sleeve 40 shown in FIG. 11 and compressed by the male die 36 and the female die 38. Thereby, as shown in FIG. 12, the compression sleeve 1 is compressed into a waveform together with the electric wire to be gripped, and the compression sleeve 1 is compressed without bending, and maintains a straight line. Further, the fraction generating compression sleeve of FIG. 13 is also compressed as shown in FIG.

It is a schematic front view which shows the compression state to the compression sleeve of Example 1 of this invention. It is a section front view of the compression sleeve used for Example 1 of this invention. 1 is a cross-sectional front view of a compression die of Example 1 of the present invention. It is a side view of the compression die of Example 1 of this invention. It is the perspective view which turned up the joint surface of the male die of Example 1 of this invention. It is the perspective view which turned up the joint surface of the female die of Example 1 of this invention. It is a cross-sectional front view which shows the state which inserted the electric wire in the compression sleeve of Example 1 of this invention. It is a front view which shows the state which compressed the compression sleeve of Example 1 of this invention. It is the perspective view which turned up the joint surface of the male die of Example 2 of this invention. It is the perspective view which turned up the joint surface of the female die of Example 2 of this invention. It is a perspective view of the compression sleeve used for Example 2 of this invention. It is a perspective view which shows the state which compressed the compression sleeve of Example 2 of this invention. It is a perspective view of the other compression sleeve used for Example 2 of this invention. It is a top view of the compression sleeve by which the waveform compression was carried out with the conventional compression die. It is a perspective view of the male die used for compression of the conventional waveform compression sleeve. It is a perspective view of the female die used for compression of the conventional waveform compression sleeve. It is sectional explanatory drawing which shows the compression state of the conventional waveform compression sleeve. It is a front view of the compression sleeve by which the waveform compression was carried out with the conventional compression die.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compression sleeve 2 Electric wire 3 Electric wire 4 Corrugated protrusion 5 Male die 6 Female die 7 Protrusion 8 Cross section curved groove 9 Waveform convex part 10 Central base part 11 Concave part 12 Cross section curved groove 13 Waveform concave groove 20 Compression sleeve 21 Through-hole 22 Spacer 25 Compression die 26 Male die 27 Female die 28 Cross section curved groove 29 First projecting portion 30 Second projecting portion 31 Cross section curved groove 32 Concave curved portion 33 Third projecting portion 34 Electric wire 35 Electric wire 36 Male die 37 Cross section Curved groove 38 Female die 39 Cross section curved groove 40 Compression sleeve 41 Electric wire gripping groove 42 Electric wire 43 Electric wire

Claims (4)

The pipe-shaped sleeve body is provided with a compression sleeve formed with gripping holes for the electric wires to be connected, each electric wire is inserted into the gripping holes on both sides of the compression sleeve, and the compression sleeve is compressed on the outer periphery of each electric wire with a compression die, In the wire connection method that bends in a wave shape with the gripped wire,
The compression die is composed of a male die and a female die, and the male die is provided with a single cross-sectional curved groove on the joint surface, and the cross-sectional curved groove crosses the groove at the center and close to the joint surface. Provided with a first projecting portion that has been lifted, and also provided with a second projecting portion that has traversed the groove at both ends and raised in the direction of the joining surface, and the female die has a single cross-sectional curved groove on the joining surface, The cross-sectionally curved groove is deeply concavely curved at the center, forms a third protrusion that has both ends lifted in the direction of the joint surface, and the concave curve at the center faces the first protrusion of the male die, The third protrusions at both ends are configured to be positioned opposite to the recesses between the first protrusion and the second protrusion of the male die, and the compression sleeve holding the electric wire is compressed by the compression die. when the center of the female die and the first projecting portion of the male die A concave curved portion, a concave portion between the third projecting portion of the female die and the first projecting portion and the second projecting portion of the male die, and a second projecting portion of the male die and the second projecting portion of the female die. 3. A wire connection characterized by maintaining a straight line while pressing and compressing the compression sleeves at respective positions outside the three protrusions and bending the compression sleeves into a plurality of undulations together with the gripped wires. Method. The compression die is composed of a male die and a female die, and the male die is provided with a single cross-sectional curved groove on the joint surface, and the cross-sectional curved groove crosses the groove at the center and lifts up to the joint surface. A first projecting portion is provided, a second projecting portion is formed at both ends across the groove and lifted in the direction of the joining surface, and the female die is provided with a single cross-sectional curved groove on the joining surface. The curved groove has a deep concave curve at the center, and forms a third protrusion whose both ends are raised in the direction of the joining surface, and the concave curve at the center faces the first protrusion of the male die, When the compression sleeve holding the electric wire is compressed with the compression die, the third protrusion of the portion is configured to be positioned opposite to the recess between the first protrusion and the second protrusion of the male die. The first protrusion of the male die and the concave bay at the center of the female die A third protrusion of the female die, a recess between the first protrusion and the second protrusion of the male die, and a second protrusion of the male die and the third protrusion of the female die. Wire connection, characterized in that it can hold the compression sleeve at each of the more outward positions and dent it so that the compression sleeve can be bent into a plurality of undulations together with the gripped wire and kept straight. Compression die. A plate-shaped sleeve body is bent to provide a compression sleeve in which a plurality of connecting wire gripping grooves are formed in parallel. Each wire is inserted into each gripping groove of the compression sleeve, and the compression sleeve is compressed by a compression die. In the electric wire connecting method of bending into a wavy shape with the gripped electric wire, the compression die is composed of a male die and a female die, and the male die is provided with a plurality of cross-sectionally curved grooves on the joint surface, The groove is provided with a first protrusion that crosses the groove at the center and lifts to the vicinity of the joint surface, and a second protrusion that crosses the groove at both ends and lifts in the direction of the joint, The female die is provided with a plurality of cross-sectionally curved grooves at positions corresponding to the plurality of cross-sectionally curved grooves of the male die on the joint surface. Joining A third projecting portion lifted in the direction is formed, and the concave concave portion at the center is opposed to the first projecting portion of the corresponding cross-sectional curved groove of the male die, and the third projecting portions at both ends are the male die. When the compression sleeve that is configured to oppose the recess between the first protrusion and the second protrusion of the corresponding cross-sectional curved groove and grips the plurality of electric wires is compressed with the compression die, the male mold A first curved portion of the die and a concave curved portion at a central portion of the female die, a concave portion between the third projected portion of the female die, the first projected portion and the second projected portion of the male die, and the the male-type second projecting portion and the female-type third than the projecting portion recessed by pressing a compression sleeve of the respective point of the position of the outer the compression sleeve of the die of the die, folded into a plurality of corrugated with the grasped wire A method for connecting electric wires, characterized by maintaining a straight line shape . The male die is composed of a male die and a female die, and the male die is provided with a plurality of cross-sectionally curved grooves on the joint surface, and each of the cross-sectionally curved grooves crosses the groove at the center and is raised to the vicinity of the joint surface. 1 projecting portion is provided, and a second projecting portion is formed across the groove at both ends and lifted in the joining surface direction, and the female die is formed into a plurality of cross-sectional curved grooves of the male die on the joining surface. A plurality of cross-section curved grooves are provided at corresponding positions, each of the cross-section curved grooves is deeply concave at the center, forms third protrusions whose both ends are raised in the direction of the joint surface, and a recess at the center. The curved portion is opposed to the first projecting portion of the corresponding cross-sectional curved groove of the male die, and the third projecting portions at both ends are the first projecting portion and the second projecting portion of the corresponding cross-sectional curved groove of the male die. It is configured to be positioned opposite the concave portions between the, song folding a plate-shaped sleeve body Forming Te, the time of the sleeve compression sleeve gripping the plurality of electric wires to each gripping groove of the main body is compressed in the compression die, the first projecting portion and the female concave curve of the central portion of the die of the male die A third protrusion of the female die, a recess between the first protrusion and the second protrusion of the male die, and a second protrusion of the male die and the third protrusion of the female die. For connecting wires, characterized in that it is possible to maintain a straight line while pressing the compression sleeves at the respective positions at the outer positions and bending the compression sleeves into a plurality of wavy shapes together with the gripped wires. Compression die.

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