JP2016162628A - Connector-equipped electric wire, connector structure, and manufacturing method of connector structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector-equipped electric wire, a connector structure, and a manufacturing method of the connector structure which can improve work efficiency at a construction site.SOLUTION: A connector-equipped electric wire 10 comprises: an electric wire 2; and a cylindrical conductive member 30 fitted to a terminal of the electric wire so as to be connected to the electric wire. At one end 30A located in the axial direction of the conductive member, the conductive member and a conductor 20 of the electric wire are crimp-connected to each other with the conductor inserted therein. At another end 30B located in the axial direction of the conductive member, screw holes 33a and 33b into which screw members 31 are screwed are formed on the peripheral surface of the conductive member.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electric wire with a connector, a connector structure, and a manufacturing method for manufacturing the connector structure.

  Conventionally, a terminal-attached electric wire including two electric wires and a terminal having a barrel portion that crimp-connects the two electric wires has been proposed (for example, Patent Document 1). FIG. 5 is a perspective view showing a conventional electric wire with a terminal disclosed in Patent Document 1. As shown in FIG.

  In the electric wire with a terminal disclosed in Patent Document 1, as shown in FIG. 5, the terminal 103 includes a barrel portion 130 that is crimp-connected to the core wire 120 of the electric wire 102, and the barrel portion 130 facing the core wire 120 of the electric wire 102. And a pressing member 131 to be pressed. The barrel part 130 is comprised from the cylindrical member which has a pair of opening 130A, 130B which inserts the core wire 120 of the electric wire 102 in the state before crimping | compression-bonding. The pressure member 131 includes a pair of auxiliary pressure plates 132 and a pair of auxiliary pressure plates 132 that sandwich the barrel portion 130 from the left and right direction (arrow X direction) orthogonal to the axis of the electric wire 102 (arrow Y direction). It has a bolt 133 and a nut 134 as pressure members that are fastened so as to approach each other.

  In such a terminal-attached electric wire 101, the core wire 120 is exposed at the end of each electric wire 102, the core wire 120 of each electric wire 102 is inserted into each of the pair of openings 130 </ b> A and 130 </ b> B, and a pair of auxiliary pressure plates 132. The bolt 133 is inserted into the barrel portion 130 and the pair of auxiliary pressure plates 132 so as to penetrate in the left-right direction (arrow X direction). Then, using a crimping jig having a convex central portion, the barrel portion 130 is sandwiched vertically (in the direction of the arrow Z) perpendicular to the axis of the electric wire 102, and the barrel portion 130 and the core wire 120 of the electric wire 102 are crimped. Connecting. Thereafter, the nut 134 is screwed onto the tip of the bolt 133 and tightened to bring the pair of auxiliary pressure plates 132 close to each other in the left-right direction, whereby the barrel portion 130 is pressed against the core wire 120. Thus, the conventional electric wire 101 with a terminal is comprised.

JP 2013-137879 A

  However, the above-described conventional electric wire 101 with a terminal is connected by crimping the barrel portion 130 of the terminal 103 and the core wire 120 of the electric wire 102 when, for example, the crimping operation between the two electric wires 102 and the terminal 103 is performed at the installation site. For this purpose, a crimping jig for crimping and a crimping process using this jig are required, and work efficiency is poor. In addition, since the conventional wire 101 with a terminal described above is provided with the head of the bolt 133 protruding from the terminal 103 in a connected state between the wire 102 and the terminal 103, the conventional wire 101 with a terminal is the wire 102. There are cases where the installation location is limited due to the increase in size in the radial direction.

  Then, an object of this invention is to provide the manufacturing method for manufacturing the electric wire with a connector, the connector structure, and the connector structure which aimed at the improvement of the working efficiency in the installation site.

In order to solve the above object, the present invention comprises the following arrangement.
That is, this invention of Claim 1 is an electric wire with a connector provided with the electric wire and the cylindrical conductive member attached to the terminal of the electric wire, and connected to the electric wire, The conductive member and the conductor are crimped and connected to one end portion in the axial direction with the conductor of the wire inserted therein, and the peripheral surface of the conductive member is connected to the other end portion in the axial direction of the conductive member. A wire with a connector, wherein a screw hole into which a screw member is screwed is formed.

  The invention described in claim 2 is characterized in that, in the invention described in claim 1, the screwing member is screwed into the screwing hole.

  The invention described in claim 3 is a connector structure including a pair of electric wires and a cylindrical conductive member that is provided between the pair of electric wires and connects the pair of electric wires. One end of the pair of electric wires is inserted into one end of the pair of electric wires in a state where one conductor is inserted, and the other end of the conductive member in the axial direction is connected to the other end of the pair of electric wires. The connector structure is characterized in that in a state in which the other conductor is inserted, a screwing member is screwed onto the peripheral surface of the conductive member so that both are connected.

  The invention described in claim 4 is the invention described in claim 3, wherein the screwing member includes a shaft portion and a head portion having a diameter larger than that of the shaft portion. A fragile part is provided between the head and the head.

  Invention of Claim 5 is a manufacturing method for manufacturing the connector structure of Claim 3, Comprising: One conductor of the said pair of electric wires is inserted in the axial direction one end part of the said electrically-conductive member In this state, a crimping connection step for crimping and connecting the two, and the other conductor of the pair of electric wires is inserted into the other end portion in the axial direction of the conductive member, and in this state, the peripheral surface of the conductive member And a screw connection step of connecting the screw members to each other and sequentially connecting them.

  According to the first aspect of the present invention, the conductive member and the conductor are crimped and connected to one end of the conductive member in the axial direction with the conductor of the wire inserted. Such an electric wire with a connector is delivered to the installation site after the crimping connection between the conductive member and the conductor of the electric wire is carried out at the manufacturing site, so that the crimping operation at the installation site is not required, and the work at the installation site Can be reduced. Therefore, it is possible to improve the work efficiency at the laying site. Further, since the crimping operation is not performed at the installation site, it is not necessary to provide a crimping jig at the installation site, and the installation site can be simplified.

  According to the invention described in claim 2, the screwing member is screwed into the screwing hole. That is, the other end of the conductive member in the axial direction is delivered from the manufacturing site to the laying site in a state where the screwing member is screwed to the peripheral surface of the conductive member. It is possible to connect the conductive member to the conductor of another electric wire by a simple operation of inserting the conductor of the electric wire and screwing the screwing member in this state. Therefore, the work efficiency at the laying site can be further improved.

  According to the invention described in claim 3, the screwing member is screwed onto the peripheral surface of the conductive member in a state where the other conductor of the pair of electric wires is inserted into the other end portion in the axial direction of the conductive member. By doing so, the conductive member and the conductor of the electric wire are connected. As described above, the conductor of the other wire is inserted into the other end of the conductive member, and the screw member is simply screwed in this state. Connection can be made. Therefore, it is possible to improve the work efficiency at the laying site. In addition, in the state where the other conductor of the pair of electric wires is inserted, the conductive member and the conductor of the electric wire are connected by screwing the screwing member to the peripheral surface of the conductive member. Since it can be carried out with a general-purpose tool without using a crimping jig, the operation can be carried out at a simple facility installation site.

  According to the invention described in claim 4, the screwing member includes the shaft portion and a head portion having a diameter larger than that of the shaft portion, and the weak portion is provided between the shaft portion and the head portion. Is provided. By forming such a fragile portion, the head can be easily dropped off, so that the connector structure can be reduced in size by the amount of the head. Therefore, the restriction on the place where the connector structure is installed can be reduced. Moreover, after the head is removed, a structure in which the screwing member cannot be removed can be obtained.

  Furthermore, it is preferable that the fragile portion is configured to be sheared by screwing of the screwing member. The fragile portion is sheared and the head is dropped by a simple operation of simply screwing the screwing member, and the working efficiency at the laying site can be further improved. Moreover, since the screwing of the screwing member can be performed with a general-purpose tool without using a special jig, the operation can be carried out at a simple facility installation site.

    According to the invention described in claim 5, the connector structure according to claim 3 is delivered to the laying site after the crimping connection between the conductive member and one conductor of the pair of electric wires at the manufacturing site, The conductive member and the other conductor of the pair of electric wires are connected. Thereby, the crimping | compression-bonding operation | work at the laying site becomes unnecessary, and the work | work at the laying site can be decreased. Therefore, it is possible to improve the work efficiency at the laying site.

(A) is a perspective view which shows the connector structure concerning one embodiment of this invention, (B) is sectional drawing which follows the II line | wire of (A), (C) is (A It is sectional drawing which follows the II-II line. It is a perspective view which shows the electric wire with a connector concerning one embodiment of this invention, and is a figure which shows the process of manufacturing the connector structure shown by FIG. (A) is a figure which shows the process of manufacturing the connector structure following FIG. 2, is a perspective view which shows the state with which the other conductor was connected among a electrically-conductive member and a pair of electric wires, (B) is ( It is sectional drawing which follows the III-III line of A), (C) is sectional drawing which follows the IV-IV line of (A). It is a figure which shows the process in which the connector structure following FIG. 3 is manufactured, and is a perspective view which shows the state by which the weak part was sheared in the screwing member. It is a perspective view which shows the conventional electric wire with a terminal indicated by patent documents 1.

  A connector structure incorporating a connector-attached electric wire according to an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1A is a perspective view showing a connector structure according to an embodiment of the present invention. FIG. 1B is a cross-sectional view taken along the line II of FIG. FIG. 1B is a cross-sectional view taken along the line II of FIG. FIG. 1C is a cross-sectional view taken along line II-II in FIG. FIG. 2 is a perspective view showing an electric wire with a connector according to an embodiment of the present invention, and is a view showing a process of manufacturing the connector structure shown in FIG. FIG. 3A is a diagram illustrating a process of manufacturing the connector structure subsequent to FIG. 2, and is a perspective view illustrating a state in which the other conductor of the conductive member and the pair of electric wires is connected. FIG. 3B is a cross-sectional view taken along line III-III in FIG. FIG. 3C is a cross-sectional view taken along line IV-IV in FIG. FIG. 4 is a perspective view showing a process of manufacturing the connector structure subsequent to FIG. 3 and showing a state where the weakened portion is sheared in the screwing member.

  Here, arrows Y and X in FIG. 1 indicate directions orthogonal to each other. In the following description, the arrow Y shown in FIG. 1 indicates the axial direction of the electric wire, and the arrow X indicates the radial direction of the electric wire.

  As shown in FIGS. 1 and 2, the connector structure of this embodiment includes a pair of electric wires 2A and 2B (hereinafter also referred to as a first electric wire and a second electric wire) and a pair of electric wires 2A and 2B. And a connector 3 having a connector main body 30 (conductive member) for connecting the pair of electric wires 2A and 2B to each other, and an insulating member 4 composed of a member having insulating properties and waterproof properties. Has been. Hereinafter, the pair of electric wires 2A and 2B may be referred to as a first electric wire 2A and a second electric wire 2B.

  Each of the pair of electric wires 2 </ b> A and 2 </ b> B includes a conductor 20 that is configured by bundling copper wires so that a cross section is circular, and a covering portion 21 that covers the conductor 20.

  As shown in FIG. 2, the connector 3 includes a connector main body 30 formed in a cylindrical shape with a circular cross section, and a bolt 31 (a screwing member) that is screwed through the peripheral wall of the connector main body 30. Configured. That is, the bolt 31 is screwed onto the peripheral surface of the connector main body 30.

  As shown in FIGS. 3A and 3B, the connector main body 30 is provided with a crimp connection portion 32 provided at one end 30A in the axial direction and crimped to the first electric wire 2A. A screw connection portion 33 (shown in FIG. 3B) that is provided at the other end 30B and screwed to the second electric wire 2B by screwing the bolt 31 is provided.

  As shown in FIGS. 3 (A) and 3 (B), the bolt 31 is configured to have a shaft portion 34 having a male screw cut on its peripheral surface and a head portion 35 having a diameter larger than that of the shaft portion 34. . The shaft portion 34 is formed such that its axial dimension is larger than the thickness dimension of the peripheral wall of the connector body 30, and when the bolt 31 is screwed into the screw holes 33 a and 33 b of the connector body 30. The tip of the second electric wire 2B is in contact with the conductor 20.

  Further, as shown in FIGS. 3A and 3B and FIG. 4, the bolt 31 has a weakened portion 36 having a smaller diameter than the shaft portion 34 between the shaft portion 34 and the head portion 35. . Such a bolt 31 is configured such that the weakened portion 36 is sheared and the head portion 35 is dropped by being screwed into the screwing holes 33 a and 33 b of the connector main body 30.

  As shown in FIGS. 3A, 3 </ b> C, and 4, the crimping connection portion 32 connects the conductor 20 exposed by peeling the predetermined covering portion 21 at the end of the first electric wire 2 </ b> A to the connector body 30. It is formed by being inserted into one end 30 </ b> A and a part of the peripheral wall of the connector main body 30 being crimped to the conductor 20 in this state. The first electric wire 2 </ b> A and the connector main body 30 are configured to be electrically and mechanically connected by such a crimp connection portion 32.

  The screw connection portion 33 is formed with two screw holes 33a and 33b that penetrate the peripheral wall of the connector main body 30 in the radial direction (arrow X direction) of the connector main body 30 and are internally threaded. ing. The two screw holes 33 a and 33 b are formed in the other end 30 </ b> B of the connector body 30. The two screw holes 33a and 33b are provided side by side along the axial direction (arrow Y direction) of the connector main body 30, and are shifted in position in the circumferential direction.

  As described above, the two screw holes 33a and 33b are provided side by side along the axial direction (arrow Y direction) of the connector main body 30, and the positions are shifted in the circumferential direction. The working area for screwing the bolts 31 into the screw holes 33a and 33b can be ensured while reducing the size of the connector body 30 in the axial direction. Therefore, both miniaturization of the connector main body 30 and improvement in workability when the bolt 31 is screwed into the screw holes 33a and 33b can be achieved. In the present embodiment, the two screw holes 33a and 33b are formed in the screw connection portion 33. However, the present invention is not limited to this, and one screw hole may be formed.

  The screw connection portion 33 inserts the conductor 20 exposed by peeling the predetermined covering portion 21 into the other end portion 30B of the connector main body 30 at the end of the second electric wire 2B. Each of the 30 screw holes 33a and 33b is formed by screwing the shaft portion 34 of the bolt 31. Here, since the two screw holes 33a and 33b are provided with their positions shifted in the circumferential direction of the connector body 30, each bolt 31 screwed into each of the two screw holes 33a and 33b is connected to the connector. The wire 2B inserted into the main body 30 is screwed from different angles. Accordingly, each bolt 31 comes into contact with the circumferential direction of the electric wire 2B from a different angle, so that the electric wire 2B can be hardly pulled out from the connector main body 30. The second electric wire 2 </ b> B and the connector main body 30 are configured to be electrically and mechanically connected by such a screw connection portion 33.

  As shown in FIGS. 1A, 1B, and 1C, the insulating member 4 is formed by connecting the conductor 20 of the first electric wire 2A and the connector body 30 at the crimping connection portion 32 in the connector body 30 and screwing them. In a state where the conductor 20 of the second electric wire 2B and the connector main body 30 are connected to each other at the joint portion 33, the connector main body 30 and the second electric wire from the position 4A including the boundary between the connector main body 30 and the first electric wire 2A. It is formed up to position 4B including the boundary with 2B ("region including the boundary between the conductive member and the electric wire"). In this embodiment, a known self-bonding tape is used as the insulating member 4. As long as it is comprised from the member which has insulation and waterproofness as an insulating member, the heat shrinkable tube may be used instead of the self-bonding tape.

  Then, the assembly procedure of the connector structure 1 incorporating the electric wire 10 with a connector is demonstrated with reference to FIGS.

  First, as shown in FIG. 2, at the terminal portion of the first electric wire 2 </ b> A, the covering portion 21 is peeled off by a predetermined dimension, and the exposed conductor 20 is inserted into one end portion of the connector main body 30. A part of the peripheral wall is crimped to the conductor 20, whereby the crimping connection portion 32 is formed, and the first electric wire 2A and the connector body 30 are electrically and mechanically connected (crimping connection process).

  In addition, the connector 3 shall screw the volt | bolt 31 to each screwing hole 33a, 33b of the connector main body 30, before connecting the 1st electric wire 2A and the connector main body 30. FIG. Here, the screw 31 is screwed into the screw holes 33a and 33b to the extent that the connector body 30 has a space in which the conductor 20 of the second electric wire 2B can be inserted. However, it is only necessary to go as far as it does not fall off the connector body 30. Thus, the connector-attached electric wire 10 is completed.

  In the embodiment described above, the bolt 31 is screwed into the screw holes 33a and 33b of the connector body 30 at the manufacturing site so as not to drop off, but the present invention is limited to this. In the wire with connector, the bolt 31 may be screwed into the screw holes 33a and 33b at the installation site. That is, the electric wire with a connector may be delivered from the manufacturing site to the laying site in a state where the bolts 31 are not screwed into the screw holes 33a and 33b.

  The completed electric wire with connector 10 is delivered from the manufacturing site to the laying site. Such an electric wire 10 with a connector is delivered to the laying site after the crimping connection between the connector main body 30 and the conductor 20 of the first electric wire 2A is performed at the manufacturing site, so that the crimping operation at the laying site is not required. Work at the laying site can be reduced.

  Subsequently, as shown in FIG. 3, in the connector-attached electric wire 10, the covering portion 21 is peeled off to the other end 30 </ b> B of the connector main body 30 by a predetermined dimension at the end portion of the second electric wire 2 </ b> B, and the exposed conductor 20 Is inserted into the other end 30B of the connector main body 30 in the electric wire 10 with connector, and the bolt 31 is screwed into the screw holes 33a and 33b of the connector main body 30 in this state. Then, the tip of the bolt 31 comes into contact with and contacts the conductor 20 of the second electric wire 2B. Thus, the screw connection portion 33 is formed, and the second electric wire 2B and the connector main body 30 are electrically and mechanically connected (screw connection step).

  When the screwing further proceeds, as shown in FIG. 4, the fragile portion 36 is sheared. In this way, the head 35 is removed, and the bolt 31 can not be removed from the connector main body 30. Since the weak portion 36 is formed, the head portion 35 can be easily dropped off, so that the connector structure 1 can be reduced in size by the amount of the head portion 35 removed. Therefore, the restriction of the place where the connector structure 1 is installed can be reduced. Furthermore, the fragile portion 36 is sheared and the head portion 35 is dropped by a simple operation of simply screwing the bolt 31 (screwing member), and the work efficiency at the installation site is further improved. Can be planned. Furthermore, since the bolt 31 can be screwed with a general-purpose tool without using a special jig, the operation can be performed at a simple installation site of equipment.

  Thereafter, as shown in FIGS. 1 (A) and 1 (B), the self-bonding tape as the insulating member 4 is attached from the position 4A including the boundary between the connector main body 30 and the first electric wire 2A to the connector main body 30 and the second electric wire. Wind to position 4B including the boundary with 2B. Thereby, both insulation performance and waterproof performance can be improved. Thus, the connector structure 1 is completed.

  Such a connector structure 1 is a simple operation in which the conductor 20 of the second electric wire 2B (the other of the pair of electric wires) is inserted into the other end 30B of the connector body 30 and the bolt 31 is screwed in this state. Thus, the connector main body 30 and the conductor 20 of the second electric wire 2B can be connected. In addition, the connection between the connector body 30 and the conductor 20 of the second electric wire 2 </ b> B is such that the bolt 31 is connected to the peripheral surface of the connector body 30 with the conductor 20 of the second electric wire 2 </ b> B inserted into the other end 30 </ b> B of the connector body 30. However, since this operation can be performed with a general-purpose tool, the facility at the laying site can be simplified.

  In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention. For example, in the above-described embodiment, the electric wire is configured by a so-called covered electric wire that includes the conductor 20 and the covering portion 21 that covers the conductor 20, but the present invention is not limited thereto. As a wire, a conductor, an insulator covering the conductor, a shield member provided outside the insulator and made of a known braid or metal foil, and a sheath (covering portion) provided outside the shield member ) May be used.

  The above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, those skilled in the art can implement various modifications in accordance with conventionally known knowledge without departing from the scope of the present invention. Of course, as long as the deformation includes the electric wire with connector of the present invention, the structure of the connector structure incorporating the electric wire with connector, and the structure of the manufacturing method for manufacturing the connector structure, it is within the scope of the present invention. It is included.

1 Connector structure 2, 2A 1st electric wire (one of a pair of electric wires)
2, 2B Second electric wire (the other of the pair of electric wires)
30 Connector body (conductive member)
20 Conductor 30A One end 30B of conductive member Other end 31 of conductive member Bolt (screwing member)
33a, 33b Screw hole 34 Shaft portion 35 Head portion 36 Fragile portion

Claims (5)

A wire with a connector, comprising: an electric wire; and a cylindrical conductive member attached to the end of the electric wire and connected to the electric wire,
The conductive member and the conductor are crimped and connected to one end of the conductive member in the axial direction with the conductor of the wire inserted therein,
An electric wire with a connector, wherein a screwing hole into which a screwing member is screwed to a peripheral surface of the conductive member is formed at the other axial end portion of the conductive member.   The electric wire with a connector according to claim 1, wherein the screwing member is screwed into the screwing hole. A connector structure comprising a pair of electric wires and a cylindrical conductive member provided between the pair of electric wires and connecting the pair of electric wires,
In the state where one conductor of the pair of electric wires is inserted into one end portion in the axial direction of the conductive member, both are crimped and connected,
The other end of the conductive member in the axial direction is connected to the other end of the pair of electric wires with the other conductor inserted therein by screwing a screw member into the peripheral surface of the conductive member. Connector structure characterized by being made. The screwing member has a shaft portion and a head having a larger diameter than the shaft portion,
The connector structure according to claim 3, wherein a weakened portion is provided between the shaft portion and the head portion. A manufacturing method for manufacturing the connector structure according to claim 3,
One conductor of the pair of electric wires is inserted into one end portion in the axial direction of the conductive member, and in this state, a crimping connection step of crimping and connecting both,
The other conductor of the pair of electric wires is inserted into the other end portion in the axial direction of the conductive member, and in this state, a screwing member is screwed onto the peripheral surface of the conductive member, and the two are connected. Connection process;
The manufacturing method characterized by performing sequentially.

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