JP2019164931A - Connector for wire connection - Google Patents

Abstract

To provide a connector for wire connection capable of reducing product variety for the wire size, while improving workability.SOLUTION: A connector for wire connection includes a first connector body 10 provided with a screw protrusion 11 at the end of one side, and a crimp connection 12 for connecting the end of a first wire W1 on the other side, and a second connector body 20 provided with a screw hole 21 for screwing the screw protrusion 11 of the first connector body 10 at the end on one side, and provided with a bolt fastening connection 22 for connecting the end of a second wire W2 on the other side, where the first and second connector bodies 10, 20 are arranged on the same central axis, and the first and second wires W1, W2 are connected on a straight line.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electric wire connecting connector for connecting two electric wires.

  There exists what was disclosed by patent document 1 as a conventional connector for electric wire connection. As shown in FIG. 12, the electric wire connecting connector 50 has a cylindrical shape, and has a crimp connecting portion 51 on one side and a bolt fastening connecting portion 52 on the other side. A bolt 53 penetrating the inner peripheral surface is attached to the bolt fastening connection portion 52.

  The connecting operation of the first electric wire W1 and the second electric wire W2 using the electric wire connecting connector 50 is performed as follows. First, as shown in FIG. 12, in an electric wire manufacturing factory or the like, the insulating coating layer 3 of the first electric wire W1 is peeled off, and the conductor 2 is exposed at the end of the first electric wire W1. Next, as shown in FIG. 13, the end portion of the first electric wire W1 is inserted into the crimp connection portion 51 of the wire connection connector 50, and a plastic deformation portion 51a is formed in the crimp connection portion 51 to form the first electric wire. The wire connection connector 50 is crimped and connected to W1.

  At the electric wire laying site or the like, the insulating coating layer 5 at the end of the second electric wire W2 is peeled off, and the conductor 4 is exposed at the end of the second electric wire W2 (see FIG. 12). Next, as shown in FIG. 14, the end portion of the second electric wire W <b> 2 is inserted into the bolt fastening connection portion 52 of the electric wire connection connector 50, and the bolt 53 is screwed in. Then, when a rotational force larger than the screw input is applied, the head 53a of the screw 53 is separated from the screw forming portion 53b. Thereby, the connector 50 for electric wire connection is connected to the 2nd electric wire W2 by bolt fastening.

Japanese Patent Laid-Open No. 2006-162628

  However, in the conventional wire connecting connector 50, the inner diameter D1 of the crimp connection portion 51 of the electric wire connecting connector 50 is adapted to the conductor diameter d1 of the first electric wire W1 (the inner diameter D1 is slightly larger than the conductor diameter d1). Dimension) and the inner diameter D2 of the bolt fastening connection portion 52 of the electric wire connecting connector 50 is not a size that fits the conductor diameter d2 of the second electric wire W2 (the inner diameter D2 is slightly larger than the conductor diameter d2). It cannot be properly connected to the first electric wire W1 and the second electric wire W2.

  That is, any one of the inner diameter D1 of the crimping connection portion 51 of the wire connection connector 50 and the inner diameter D2 of the bolt fastening connection portion 52 is not compatible with the conductor diameter d1 of the first electric wire W1 or the conductor diameter d2 of the second electric wire W2. In this case, it is necessary to change the connector size to be suitable for both the conductor diameter d1 of the first electric wire W1 and the conductor diameter d2 of the second electric wire W2. Accordingly, it is necessary to prepare a large number of product types as the electric wire connecting connector 50, and there is a problem that the productivity of parts is not increased and the cost is increased.

  In addition, when it is changed to connect the second electric wire W2 different from the originally planned conductor size at the electric wire laying site or the like, the electric wire connecting connector 50 connected at the electric wire manufacturing factory or the like is connected to the first electric wire. There is a problem in that workability is not good because it is necessary to cut from W1 and reconnect a different type (size) of wire connecting connector 50 to the first electric wire W1.

  Accordingly, the present invention has been made to solve the above-described problems, and provides a connector for connecting an electric wire that can reduce the number of product types with respect to the size of the electric wire and that also improves workability. For the purpose.

  The present invention provides a first connector body provided with a screw protrusion on one end and a first wire connecting portion for connecting the end of the first wire on the other end, and on the one end. A screw connector into which the screw protrusion is screwed, and a second connector main body provided with a second electric wire connecting portion for connecting an end of the second electric wire on the other side; Two connector main bodies are arranged on the same central axis, and the first electric wire and the second electric wire are connected in a straight line.

  According to the present invention, it is not necessary to change the entire wire connection connector with respect to the change in the wire size of the first electric wire and the second electric wire, and the product type of the wire connection connector can be reduced. Moreover, when it changes to the 2nd electric wire different from the electric wire size which was initially planned, the 2nd connector main body which adapts the electric wire size of a 2nd electric wire should just be used, and workability | operativity is good.

1 shows a first embodiment of the present invention, in which (a) is a perspective view of a first connector body and a second connector body before wire connection, and (b) is a sectional view of a bolt. FIG. 3 is a perspective view showing the first embodiment of the present invention and connecting (connecting) a first connector body and a second connector body. It is a perspective view before showing a 1st embodiment of the present invention and connecting a 1st electric wire to the 1st connector main part. FIG. 3 is a perspective view showing the first embodiment of the present invention, in which a first electric wire is crimped and connected to a first connector body. It is a perspective view before showing a 1st embodiment of the present invention and connecting (connecting) a 2nd connector main part to the 1st connector main part which connected the 1st electric wire, and connecting a 2nd electric wire to the 2nd connector main part. It is a perspective view of the state where the 1st embodiment of the present invention was shown and the 2nd electric wire was inserted in the 2nd connector main part. It is a perspective view of the state which showed 1st Embodiment of this invention and connected the 2nd electric wire to the 2nd connector main body by the bolt fastening. It is a perspective view of the state where the 1st embodiment of the present invention was shown and the insulating member was covered on the perimeter of the connector for electric wire connection which connected the 1st electric wire and the 2nd electric wire. 1 shows a first embodiment of the present invention, (a) is a perspective view of an electric wire connection structure using an electric wire connection connector, (b) is a cross-sectional view of a connection portion between a first connector main body and a second connector main body, (c) ) Is a cross-sectional view of a crimp connection portion, and (d) is a cross-sectional view of a bolt fastening connection portion. FIG. 10 is a perspective view showing the second embodiment of the present invention and connecting (connecting) two second connector main bodies with an attachment member. It is a perspective view of the state which showed 2nd Embodiment of this invention and connected the 2nd 2nd connector main body with the attachment member. It is a perspective view of the connector for electric wire connection which shows a prior art example. It is a perspective view which showed the prior art example and crimped and connected the 1st electric wire to the connector for electric wire connection. It is a perspective view which showed the prior art example and bolted and connected the 2nd electric wire to the connector for electric wire connection which crimped and connected the 1st electric wire.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1 to 9 show a first embodiment of the present invention. As shown in FIG.1 and FIG.2, the connector 1 for electric wire connection connects the 1st electric wire W1 and the 2nd electric wire W2. The first electric wire W <b> 1 is formed by the conductor 2 and the insulating coating layer 3 that covers the outer periphery of the conductor 2. The insulating coating layer 3 is formed of a sheath and an insulator. The second electric wire W <b> 2 is formed of the conductor 4 and the insulating coating layer 5 that covers the outer periphery of the conductor 4. The insulating coating layer 5 is formed of a sheath and an insulator.

  The wire connecting connector 1 includes a cylindrical first connector main body 10 and a cylindrical second connector main body 20. The outer diameters of the circumferential surfaces of the first connector body 10 and the second connector body 20 are the same.

  The first connector main body 10 is provided with a screw projection 11 at one end in the longitudinal direction. The screw protrusion 11 is formed smaller than the outer diameter of the first connector body 10. On the other side of the first connector main body 10 in the longitudinal direction, a crimp connection portion 12 that is a first wire connection portion that connects the end portion of the first electric wire W1 is provided. An inner diameter D1 of the crimp connection portion 12 is formed to be slightly smaller than an outer diameter d1 of the conductor 2 of the first electric wire W1. The crimp connection portion 12 is plastically deformed by an external force from the outer peripheral side.

  The second connector main body 20 is provided with a screw hole 21 into which the screw protrusion 11 is screwed at one end in the longitudinal direction. The screw hole 21 is formed on the inner peripheral surface of the second connector body 20.

  On the other side of the second connector main body 20 in the longitudinal direction, a bolt fastening connection portion 22 that is a second wire connection portion for connecting the end portion of the second electric wire W2 is provided. The inner diameter D2 of the bolt fastening connection portion 22 is formed slightly smaller than the outer diameter d2 of the conductor 4 of the second electric wire W2. The bolt fastening connection portion 22 has two screw holes 23 penetrating the inner peripheral surface, and two bolts 24 screwed into the screw holes 23. The two screw holes 23 are arranged at different positions in the circumferential direction of the second connector body 20. As shown in FIG. 1B, the bolt 24 has a head portion 24a and a screw forming portion 24b. A shear fragile portion 24c is provided between the head portion 24a and the screw forming portion 24b. The shear fragile portion 24c has a smaller cross-sectional area than any portion of the head portion 24a and the screw forming portion 24b. In other words, the shear fragile portion 24 c is formed to be broken when a rotational force that applies a desired pressing force to the conductor 4 of the second electric wire W <b> 2 acts on the bolt 24.

  The first connector main body 10 and the second connector main body 20 are disposed on the same central axis, and the first electric wire W1 and the second electric wire W2 are connected in a straight line (for example, see FIG. 7).

  The first connector main body 10 and the second connector main body 20 are connected to each other in accordance with the outer diameters d1 and d2 of the respective conductors 2 of the first electric wire W1 and the second electric wire W2, and the inner diameters of the crimp connection portion 12 and the bolt fastening connection portion 22. D1 and D2 and those having different outer diameters are used. On the other hand, the screw protrusion 11 of the first connector body 10 and the screw hole 21 of the second connector body 20 have a constant diameter regardless of the inner diameters D1 and D2 and the outer diameter dimensions of the crimping connection portion 12 and the bolt fastening connection portion 22. It is formed in a dimension (a dimension that can be screwed in properly). That is, the screw projection 11 of the first connector body 10 and the screw hole 21 of the second connector body 20 have the same dimension (applicable dimension) regardless of the product type of the wire connecting connector 1.

  Next, the connection work of the 1st electric wire W1 and the 2nd electric wire W2 using the connector 1 for electric wire connection is demonstrated. First, as shown in FIG. 3, in the electric wire manufacturing factory, the insulating coating layer 3 at the end of the first electric wire W1 is peeled off, and the conductor 2 is exposed at the end of the first electric wire W1. Next, as shown in FIG. 4, the end portion of the first electric wire W1 is inserted into the crimp connection portion 12 of the first connector body 10, and the crimp connection portion 12 is plasticized with a dedicated crimp tool (not shown). The first connector main body 10 is crimped and connected to the first electric wire W1 by being deformed (in this first embodiment, deformed to partially form the plastic deformation portion 12a).

  Next, as shown in FIG. 5, the screw hole 21 of the second connector main body 20 is screwed into the screw protrusion 11 of the first connector main body 10 to which the first electric wire W1 is connected at the electric wire laying site. The first connector body 10 and the second connector body 20 are connected (coupled). Further, the insulating coating layer 5 at the end of the second electric wire W2 is peeled off, and the conductor 4 is exposed at the end of the second electric wire W2. Next, as shown in FIG. 6, the end of the second electric wire W2 is inserted into the bolt fastening connection portion 22 of the second connector body 20, and the bolt 24 is screwed with a general-purpose bolt tightening tool (not shown). Deeply enter the hole 23. Then, the tip of the screw forming portion 24 b of the bolt 24 presses the conductor 4. When a predetermined fastening force is applied to the bolt 24, as shown in FIG. 7, the head 24a of the bolt 24 is separated from the screw forming portion 24b, and only the screw forming portion 24b remains in the second connector body 20. Thereby, the 2nd connector main body 20 is connected to the 2nd electric wire W2 by bolt fastening.

  Next, as shown in FIG. 8, the entire outer periphery of the wire connecting connector 1 composed of the first connector main body 10 and the second connector main body 20, the first electric wires W <b> 1 near both ends of the wire connecting connector 1, and The periphery of the second electric wire W2 is covered with an insulating member 25. The insulating member 25 is a self-welding tape, a shrinkable tube, or the like. This completes it.

  As shown in FIG. 9, the wire connection structure using the wire connection connector 1 is such that the conductor 2 of the first wire W1 is crimped and connected to the crimp connection portion 12 at one end of the wire connection connector 1. 1, the conductor 4 of the second electric wire W <b> 2 is bolt-connected to the bolt fastening connection portion 22.

  As described above, the wire connecting connector 1 includes the first connector main body 10 having the screw protrusion 11 and the second connector main body 20 having the screw hole 21 screwed into the screw protrusion 11. The main body 10 and the second connector main body 20 are arranged on the same central axis, and the first electric wire W1 and the second electric wire W2 are connected in a straight line. Therefore, as in the first embodiment, the diameters d1 and d2 of the screw protrusion 11 and the screw hole 21 are constant regardless of the dimensions of the inner diameter D1 of the first connector body 10 and the inner diameter D2 of the second connector body 20. If formed, only the first connector main body 10 needs to be changed for the change of the conductor size (electric wire size) of the first electric wire W1, and the second connector main body 20 does not need to be changed. To change the conductor size (electric wire size) of W2, only the second connector body 20 needs to be changed, and there is no need to change the first connector body 10. Therefore, compared to the case where the entire wire connection connector is changed with respect to the change in the conductor size (wire size) of either the first electric wire W1 or the second electric wire W2 as in the conventional example, the electric wire connection connector. Reduction of one product type can be aimed at.

  Moreover, since the 1st electric wire W1 and the 2nd electric wire W2 are connected on a straight line, it is suitable when carrying out the straight arrangement of the electric wire which consists of the 1st electric wire W1 and the 2nd electric wire W2.

  In the first embodiment, the diameters d1 and d2 of the screw protrusion 11 and the screw hole 21 are formed constant regardless of the inner diameter D1 of the first connector body 10 and the inner diameter D2 of the second connector body 20. The first connector body 10 and the second connector body 20 having any inner diameter can be reliably connected.

  If it is changed to connect the second electric wire W2 different from the originally planned conductor size at the electric wire laying site, the second connector body 20 that matches the conductor size of the second electric wire W2 is used. Good and workability is good. That is, as in the conventional example, the electric wire connecting connector 50 (see FIG. 12) connected at the electric wire manufacturing factory is cut from the first electric wire W1, and another electric wire that fits both the first electric wire W1 and the second electric wire W2. There is no need to reconnect the connection connector 50.

  In the first embodiment, the crimp connector 12 is provided in the first connector body 10 and the bolt fastening connection part 22 is provided in the second connector body 20, but the bolt fastening connection part 22 is provided in the first connector body 10, The crimp connector 12 may be provided on the two connector body 20.

  In 1st Embodiment, the operation | work which connects the 1st connector main body 10 to the 1st electric wire W1 in an electric wire manufacturing factory is performed, and the connection (connection) operation | work of the 1st connector main body 10 and the 2nd connector main body 20 in an electric wire laying site, A typical work process for performing the work of connecting the second connector main body 20 to the second electric wire W2 has been described. However, all work may be performed at the same work place, and the work place is not limited.

  In the first embodiment, the crimp connection portion 12 is deformed so as to form a plastic deformation portion 12a (see FIGS. 9A and 9C) in which the inner peripheral surface protrudes into the internal space by an external force from the outer peripheral side. About the form of plastic deformation, it differs with the way of the action of external force by a dedicated jig (not shown). There is also plastic deformation that forms a plastic deformation portion 12a (see FIGS. 9A and 9C) in which the entire crimp connection portion 12 is crushed and elliptically deformed, and a part of the crimp connection portion 12 protrudes greatly into the internal space. The shape of plastic deformation does not matter.

(Second Embodiment)
10 and 11 show a second embodiment of the present invention. As shown in FIGS. 10 and 11, the electric wire connecting connector 30 of the second embodiment includes an attachment member 31. The attachment member 31 has screw protrusions 32 into which the screw holes 21 of the second connector main body 20 are screwed at both ends.

  The wire connection connector 30 using the attachment member 31 includes the attachment member 31 and the two second connector main bodies 20, and the second connector main body 20 is connected (coupled) to both ends of the attachment member 31.

  The electric wire connecting connector 30 of the second embodiment is effective when, for example, the connection work of the first electric wire W1 and the connection work of the second electric wire W2 are performed at the electric wire laying site. That is, the 2nd connector main body 20 is connected to the edge part of the 1st electric wire W1 by bolt fastening with a general purpose bolt fastening tool (not shown). Next, the attachment member 31 is connected (coupled) to the second connector body 20 to which the first electric wire W <b> 1 is connected, and further, another second connector body 20 is connected (coupled) to the attachment member 31. Next, the end of the second electric wire W2 is connected to another second connector body 20 by bolt fastening with a general-purpose bolt fastening tool (not shown).

  As mentioned above, according to 2nd Embodiment, since the 1st electric wire W1 and the 2nd electric wire W2 can be connected, without using a dedicated crimping jig, the electric wire connection work in an electric wire laying site improves.

(Modification of the second embodiment)
The electric wire connecting connector according to the modification of the second embodiment has an attachment member 31 and two first connector main bodies 10, and the first connector main body 10 is connected (coupled) to both ends of the attachment member 31. Can be considered. In this case, the attachment member 31 has a configuration in which both ends have screw holes into which the screw protrusions 11 of the first connector body 10 are screwed.

W1 1st electric wire W2 2nd electric wire 1,30 Connector for electric wire connection 10 First connector body 11 Screw protrusion 12 Crimp connection part (1st electric wire connection part)
20 Second connector body 21 Screw hole 22 Bolt fastening connection part (second electric wire connection part)
31 Attachment members

Claims (5)

A first connector body provided at a first wire connecting portion for connecting the end of the first electric wire to the other side;
A second connector main body provided with a screw hole into which the screw protrusion is screwed into one end, and a second wire connecting portion that connects the end of the second electric wire to the other end;
A connector for electric wire connection, wherein the first connector main body and the second connector main body are arranged on the same central axis, and the first electric wire and the second electric wire are connected in a straight line. It is a connector for electric wire connection according to claim 1,
A wire connecting connector, wherein the screw protrusion and the screw hole have a constant diameter regardless of the inner diameter of the first connector body and the inner diameter of the second connector body. It is a connector for electric wire connection according to claim 1 or 2,
The first electric wire connection portion is a crimp connection portion in which an end portion of the first electric wire is inserted therein, and the end portion of the inserted first electric wire is crimped by plastic deformation, and the second electric wire connection portion Is a bolt fastening connection portion in which an end portion of the second electric wire is inserted therein and the end portion of the inserted second electric wire is pressed with a screwed bolt. . It is a connector for electric wire connection according to claim 3,
The bolt is provided with a shear fragile portion between a head portion and a screw forming portion. It is the connector for electric wire connection in any one of Claims 1-4,
A screw protrusion into which the screw hole of the second connector main body is screwed, or an attachment member provided with screw holes to be screwed into the screw protrusion of the first connector main body at both ends. ,
The electric wire connecting connector, wherein the second connector body or the first connector body is connected to both ends of the attachment member.

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