JP2012018834A - Joint member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint member which is capable of electrically connecting electric wires to each other with a simple structure, and which can be manufactured at a low cost.SOLUTION: A joint member 10 comprises: a main body 12 which is made of a conductive metal plate deformed into a cylindrical shape and is externally fitted over a plurality of electric wires 11, 11 arranged in parallel; claws 14 which are formed on respective ends in an electric wire extension direction A of the main body 12 and are bendable toward the electric wires 11, 11; and connections formed on respective ends in a direction perpendicular to the electric wire extension direction A of the main body 12. By engaging the connections with each other while the main body 12 is externally fitted to the electric wires 11, 11, both the ends of the main body 12 are connected to each other while surrounding the electric wires 11, 11. After both the ends are connected, the claws 14 are bent toward the electric wires 11, 11 so that they bite into the electric wires 11, 11, thereby bringing the claws 14 into electrical contact with conductors in the electric wires 11, 11.

Description

  The present invention relates to a joint member for electrically connecting electric wires.

  In a wire harness circuit for automobiles, it is necessary to electrically connect wires arranged in parallel. Current connection methods include methods of stripping wires and crimping terminals to form joint connectors (see Patent Documents 1 and 2 below), as well as methods of terminal processing by splices, bonders, ultrasonic welding, etc. is there.

  Furthermore, in the following patent document 3, the terminal is bitten into the electric wire by crimping, and the terminal is brought into contact with the core wire of the electric wire.

JP 2001-176628 A Japanese Patent Laid-Open No. 8-190942 JP-A-6-260218

  However, the joint creation methods described in Patent Documents 1 and 2 have a problem in that a process of stripping the coating of the electric wires is necessary, and the equipment becomes expensive. Furthermore, the methods described in Patent Documents 1 and 2 are difficult to work on the jig plate of the wire harness, and are performed in a separate process, so there is a problem that the number of processes increases and the manufacturing cost increases. .

  Further, in the method described in Patent Document 3, there is a concern that the amount of biting in varies when the crimping varies. Further, in the technique of Patent Document 3 below, since ultrasonic connection is performed in the subsequent process, there is a problem that the equipment becomes large and the processing becomes complicated, resulting in an increase in manufacturing cost.

  An object of the present invention is to solve the above-described problems, and to provide a joint member that can electrically connect electric wires with a simple configuration and can be manufactured at low cost.

The above-described object of the present invention is achieved by the following configuration.
(1) A main body formed of a conductive metal plate, deformed into a cylindrical shape, and sheathed across a plurality of electric wires arranged in parallel;
Claw portions that are formed at both ends of the main body in the direction in which the electric wire extends and can be bent toward the electric wire,
A joint member formed at each of both ends of the main body in a direction orthogonal to the direction of extension of the electric wire,
Both ends of the main body are connected in a state of surrounding the electric wire by engaging the connecting portions in a state of being sheathed on the electric wire, and the claw portion is bent toward the electric wire after the connection. The joint member is characterized in that the claw portion is in electrical contact with the conductor in the electric wire by biting into the wire.

(2) The joint member according to (1), wherein the claw portion has a sharp blade at a tip.

(3) The joint member according to (1) or (2), wherein the claw portions are arranged on the same straight line along the electric wire extending direction.

  According to the configuration of (1) above, by deforming the main body formed of the conductive metal plate into a cylindrical shape, covering the plurality of electric wires arranged in parallel, and engaging the connecting portion, The joint member can be fixed to the electric wire. And since each nail | claw part electrically contacts the conductor in each electric wire by bending the nail | claw part provided in the main body toward the electric wire, an electric wire can be electrically connected by a joint member.

  Therefore, the structure of the joint member for electrically connecting the electric wires is simple, and the joint member can be manufactured at low cost.

  According to the configuration of (2) above, by having a sharp blade at the tip of the claw portion, the coating of the electric wire can be easily torn when the claw portion is bent.

  According to the configuration of (3) above, since the claw portions are arranged on the same straight line along the electric wire extending direction, the claw portions arranged on the same straight line can be folded inward at the same time. Work becomes easy.

  According to the present invention, the electric wires can be electrically connected to each other only by bending the metal plate, so that the joint member can be provided at a low cost.

It is an expanded view of the joint member which is embodiment of this invention. It is the perspective view which looked at the nail | claw part from the back surface (surface on the side which contact | connects an electric wire) side of a main body. It is the perspective view which looked at the nail | claw part from the surface side of the main body. It is a perspective view of the connection part of a main body. It is a perspective view of the state where the joint member was sheathed on the electric wire. It is a perspective view of the state which bent the nail | claw part toward the electric wire from the state shown in FIG. It is XX sectional drawing of FIG. It is a perspective view of the state where three electric wires were electrically connected by two joint members.

  Hereinafter, an embodiment of a joint member according to the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIG. 1, the joint member 10 is formed of a conductive metal plate, is deformed into a cylindrical shape, and is covered with a main body 12 straddling a plurality of electric wires 11 arranged in parallel, and a wire extension in the main body 12. A claw portion 14 formed at each end portion in the existing direction A and bendable toward the electric wire 11, and connecting portions 16 and 18 formed at both end portions in the direction orthogonal to the electric wire extending direction in the main body 12, respectively. I have.

  As shown in a developed view of the joint member 10 in FIG. 1, the joint member 10 is formed with a main body 12 by punching and pressing a conductive metal plate. In the case of this embodiment, the main body 12 is bent into a rectangular tube shape by a bent portion along the electric wire extending direction A, and both ends in the direction B orthogonal to the electric wire extending direction A are connected by the connecting portions 16 and 18. The

  The joint member 10 has a first corner portion 12b, a side surface portion 12c, a second corner portion 12d, and a lower surface portion 12e formed continuously on both sides of the upper surface portion 12a. As shown in FIGS. 2 and 3, sharp triangular claw portions 14 are formed on both ends of the upper surface portion 12a and the lower surface portion 12e in the electric wire extending direction A.

  In the case of this embodiment, two claw portions 14 are formed at both ends of the upper surface portion 12a in the electric wire extending direction A, and one claw portion 14 is formed at both ends of the two lower surface portions 12e in the electric wire extending direction A. Has been. Accordingly, a total of eight claw portions are formed at both ends of the main body 12 in the electric wire extending direction A, respectively.

  Here, it is preferable that the nail | claw part 14 formed in the edge part which the electric wire extension direction A opposes is arrange | positioned along the electric wire extension direction A on the same straight line. In addition, when the main body 12 is bent into a rectangular tube shape, it is preferable that the claw portion 14 of the upper surface portion 12a and the claw portion 14 of the lower surface portion 12e face each other.

  As shown in FIG. 2, a tapered surface 20 is formed on the back surface (surface on the electric wire side) of the claw portion 14. The tapered surface 20 forms a sharp blade, and as will be described later, when the claw portion 14 is bent and bites into the electric wire 11, the covering 11a of the electric wire 11 can be easily cut.

  The connecting portions 16 and 18 include a convex portion 16 formed on one lower surface portion 12 e and a concave portion 18 formed on the other lower surface portion 12 e and engaged with the convex portion 16. The convex portion 16 has a shape that widens at the tip, and the concave portion 18 has a shape that widens inward, so that both dovetail grooves are joined.

The joint work of the electric wire 11 by the joint member 10 will be described.
First, the joint member 10 in an unfolded state is bent and formed into a rectangular tube shape so that the two electric wires 11 are held inside, and is externally mounted on the electric wires 11. Then, as shown in FIG. 4, the convex portions 16 and the concave portions 18 formed on the respective lower surface portions 12e are engaged with each other to connect the lower surface portions 12e and 12e, and as shown in FIG. Fix to the wire 11. Here, it is preferable that the joint member 10 has a size adapted to the diameter of the electric wire 11 so that the two electric wires 11 are held in the rectangular tube-shaped portion without looseness.

  Next, as shown in FIG. 6, the claw portion 14 of the joint member 10 is bent toward the electric wire 11 and bites into the electric wire 11. The nail | claw part 14 is bent until it reaches the depth which contacts the conductor 11b in the electric wire 11 fully. Then, the claw portion 14 comes into contact with the conductors 11 b and 11 b of the two electric wires 11 and 11, so that the two electric wires 11 and 11 are electrically connected by the joint member 10. Further, the joint member 10 is firmly fixed to the electric wires 11 and 11 by the claw portion 14 biting into the electric wires 11 and 11.

  At this time, as shown in FIG. 7, a force in the direction of the arrow C is applied to the claw portion 14 to spread outward due to the springback action that occurs when the claw portion 14 is bent. Therefore, a force to contact the conductor 11b acts on the claw portion 14, and the contact between the claw portion 14 and the conductor 11b is stabilized.

  Although the said embodiment electrically connects the two electric wires 11 and 11 with the joint member 10, next, the form which electrically connects three electric wires is demonstrated.

  As shown in FIG. 8, in order to electrically connect two of the three electric wires 11, 11, 11, two joint members 10, 10 are used. In this case, the two joint members 10 are separated from the electric wires 11, 11, 11 by being separated by a predetermined distance along the electric wire extending direction A. The central electric wire 11 is electrically connected to the electric wires 11 on both sides by the joint members 10 and 10, respectively.

  According to the configuration of the above-described embodiment, the main body 12 formed of the conductive metal plate is deformed into a cylindrical shape, is sheathed across the plurality of electric wires 11, 11 arranged in parallel, and engages the connecting portion. Thus, the joint member 10 can be fixed to the electric wires 11 and 11. Then, by bending the claw portions 14 provided on the main body 12 toward the electric wires 11, 11, the claw portions 14 are in electrical contact with the conductors 11 b, 11 b in the electric wires 11, 11. Thus, the electric wires 11, 11 can be electrically connected.

  Therefore, the structure of the joint member 10 that electrically connects the electric wires is simple, and the joint member 10 can be manufactured at low cost.

  According to the structure of the said embodiment, when it has the sharp blade at the front-end | tip of the nail | claw part 14, when the nail | claw part 14 is bent, the coating | cover 11a of the electric wire 11 can be teared easily.

  Moreover, according to the structure of the said embodiment, since the nail | claw part 14 is arrange | positioned on the same straight line along the electric wire extension direction A, the nail | claw part 14 arrange | positioned on the same straight line is bend | folded inside simultaneously. Can be easily folded.

  According to the structure of the said embodiment, the nail | claw part 14 located on the upper side of the electric wires 11 and 11 and the nail | claw part 14 located on the lower side of the electric wires 11 and 11 are arrange | positioned facing, The claw part 14 Thus, the electric wire 11 can be clamped from both the upper and lower sides, so that the fixing of the joint member 10 to the electric wire 11 and the contact with the conductor 11b are reliably performed.

  The joint member of the present invention is not limited to the above-described embodiment, and appropriate modifications, improvements, and the like are possible. In addition, the material, shape, dimensions, and the like of the joint member of the present invention are arbitrary as long as the object of the present invention can be achieved, and are not limited to the above-described embodiments.

DESCRIPTION OF SYMBOLS 10 Joint member 11 Electric wire 11a Coating | cover 11b Conductor 12 Main body 12a Upper surface part 12b 1st corner | angular part 12c Side surface part 12d 2nd corner | angular part 12e Lower surface part 14 Claw part 16 Convex part 18 Recessed part

Claims (3)

A body formed by a conductive metal plate, deformed into a cylindrical shape, and sheathed across a plurality of electric wires arranged in parallel;
Claw portions that are formed at both ends of the main body in the direction in which the electric wire extends and can be bent toward the electric wire,
A joint member formed at each of both ends of the main body in a direction orthogonal to the direction of extension of the electric wire,
Both ends of the main body are connected in a state of surrounding the electric wire by engaging the connecting portions in a state of being covered with the electric wire, and the claw portion is bent toward the electric wire after the connection. The joint member is characterized in that the claw portion is in electrical contact with the conductor in the electric wire by biting into the wire.   The joint member according to claim 1, wherein the claw portion has a sharp blade at a tip.   The joint member according to claim 1, wherein the claw portions are arranged on the same straight line along an electric wire extending direction.

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