JP5785239B2 - Wire connector - Google Patents

Description

  The present invention relates to an electric wire connector for connecting covered electric wires or connecting an electric wire and the like with an electric wire.

  Conventionally, a method of using solder, using screws, or tightening a terminal device such as aluminum has been used to connect electric wires to each other or to an electric appliance. However, many of these use tools such as soldering irons and pliers. For this reason, the electric wire connector which does not require a tool etc. using the spring was also used.

JP2000-30786 JP-A-5-266934 JP2013-171624A

  The prior art of Patent Document 1 is an electric wire connector used for indoor wiring, in which an end portion of an electric wire with a coating removed is inserted and connected to the electric wire connector. This electric wire connector was for a single wire and could not be used for a stranded wire.

The prior art of Patent Document 2 is used not only for single wires but also for stranded wires. However, a large force is required to push the wedge, and a tool is required.
In the above two conventional techniques, since the coating of the end portion of the electric wire has to be stripped in advance, a tool for stripping the coating is necessary, and there is a common problem that it takes time and effort.

  On the other hand, in patent document 3, the method of connecting without peeling the coating | cover of an electric wire edge part for small electronic devices was disclosed. In this method, the end portion of the covered electric wire is directly pushed into the V-shaped opening groove, and the covering is crushed so that the core wire and the terminal fitting are brought into contact with each other to conduct electricity. In this method, a large force is required to push the end portion of the electric wire into the V-shaped opening groove, and a tool or a special device is required. In addition, the contact area between the core wire of the electric wire and the terminal fitting is very small, and there is a problem that it cannot be used for large electric power like indoor wiring.

  A first housing portion having an insertion hole for inserting an electric wire, a second housing portion pivotally mounted around the rotation axis of the first housing portion, and the second housing portion. It is composed of a conductor provided in the housing part and a blade part provided to peel off the covering of the electric wire at the tip of the conductor, and the distance from the rotation axis to the blade part is determined from the axis to the second. The distance between the end portion of the housing portion and the operation portion is smaller than that, and an electric wire pressing portion is provided inside the first housing portion, and an electric wire holding space is provided between the electric wire pressing portion and the contact portion of the conductor. This is an electric wire connector that presses and holds an electric wire in the electric wire holding space and allows electric conduction between the electric wire and the conductor.

  It is possible to provide an electric wire connector that can solve the above problems and can connect a covered electric wire as it is without a tool.

It is a perspective view which shows the open state of the electric wire connector of a 1st Example. It is AA sectional drawing of FIG. It is a perspective view which shows the conductive plate of FIG. It is a perspective view which shows the closed state of the electric wire connector of a 1st Example. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is sectional drawing which shows the state which inserted the electric wire in the electric wire connector shown by AA sectional drawing of FIG. It is sectional drawing which shows the closed state of the electric wire connector shown in FIG. It is a perspective view which shows the state from which the conductor and blade part of a 2nd Example peel the coating | coated of a covered electric wire. It is a perspective view which shows the conductor of a 2nd Example. It is a perspective view which shows the conductor of a 3rd Example. It is a perspective view which shows the electric wire connector of a 4th Example. It is sectional drawing which shows the electric wire connector of a 5th Example. It is sectional drawing which shows the electric wire connector of a 6th Example.

  A first housing portion having an insertion hole for inserting an electric wire, a second housing portion pivotally mounted around the rotation axis of the first housing portion, and the second housing portion. It is composed of a conductor provided in the housing part and a blade part provided to peel off the covering of the electric wire at the tip of the conductor, and the distance from the rotation axis to the blade part is determined from the axis to the second. The distance between the end portion of the housing portion and the operation portion is smaller than that, and an electric wire pressing portion is provided inside the first housing portion, and an electric wire holding space is provided between the electric wire pressing portion and the contact portion of the conductor. This is an electric wire connector that presses and holds an electric wire in the electric wire holding space and allows electric conduction between the electric wire and the conductor.

In the above-described electric wire connector, the electric conductor provided in the second casing portion has a contact portion extending on a surface substantially concentric with the electric wire to be inserted.
In the above-described electric wire connector, the electric wire connector is characterized in that the blade portion provided in the second casing portion has a curved blade portion extending on a surface substantially concentric with the electric wire to be inserted.
Said electric wire connector is an electric wire connector characterized by having a square blade part in a part of curve blade part provided in the 2nd housing | casing part.

  1 and 2 are views showing an open state of an electric wire connector 10 according to a first embodiment of the present invention. The electric wire connector 10 includes a first casing 20, a second casing 30 that is rotatably attached to the first casing 20 via a rotation shaft 60, and a conductor 40 that is attached to the second casing. It consists of and. The first housing part 20 includes a box part 22 and an insertion hole 50 into which the electric wire 80 is inserted.

  The second housing part 30 includes a lid part 32 extending from the shaft part 34 to the end part 36 and a conductor support part 38 extending from the shaft part 34. The conductor 40 is attached to the conductor support portion 38 so that the contact portion 42 of the conductor 40 is on a substantially concentric circle of the rotating shaft 60. The second housing unit 30 is rotatably connected to the first housing unit 20 via the rotation shaft 60 in the shaft unit 34.

  As shown in FIG. 3, the conductor 40 includes a contact surface 42 having a curvature R1 concentric with the electric wire, and a connecting portion 44 that connects the contact surfaces 42 to each other. Further, the conductor 40 has a concentric circle R2 with the rotation axis 60 as the center. A blade portion 70 is formed at the distal end portion of the conductor 40. The blade portion 70 is formed at a right angle or an acute angle, and is composed of a curved blade portion 72 and a square blade portion 74 which are concentric with the electric wire 80 and have a curvature R1 having the same diameter as the electric wire core 82. The conductor 40 is formed by pressing a material with low electrical resistance such as copper. When the outer peripheral edge is sheared, a sagging corner and a burr-side corner are formed on both sides of the plate, but if the burr-side corner is a blade portion, a sharp edge can be used as the blade portion.

In the case of the electric wire connector 10 to which many electric wires 80 are connected, the force necessary to peel off the covering 84 can be dispersed by providing a step in the blade portion 70 in the axial direction of the electric wire 80 for each electric wire 80.
When closing the first housing 30, the conductor 40 and the blade 70 try to push the electric wire in the back direction, but the tip of the electric wire 80 hits the stopper 26 and prevents further movement. be able to.

  4, 5 and 6 show the closed state of the wire connector of the first embodiment. The second casing 30 forms a casing that covers and closes the upper opening of the first casing 20 and protects the inside of the casing. A cutout is provided at the end 36 of the second casing 30 to facilitate opening of the second casing 30.

7 is a cross-sectional view showing a state in which the electric wire 80 is inserted into the insertion hole 50 of the electric wire connector 10, and FIG. 8 is a cross-sectional view showing a state in which the second housing portion 30 is closed from that state.
The operation of the conductor 40 and the blade part 70 will be described in detail with reference to FIG. When the second housing unit 30 rotates in the closing direction, the blade unit 70 rotates in the D direction. At this time, the blade portion 70 cuts the covering body 84 while pressing the covering body 84 of the electric wire 80 to form a covering body cutting surface 84a. Further, when the blade portion 70 rotates, the covering 84 is peeled off and the covering peeling piece 84b is separated. Thus, the electric wire core surface 88 from which the covering has been peeled is formed, and the contact portion 42 of the conductor 40 comes into contact with this surface. Since the contact part 42 and the electric wire core 82 are formed in concentric circle R1, a sufficiently wide contact area is ensured in the circumferential direction. Moreover, since the blade part 70 peels the covering 84 sufficiently long also in the axial direction of the electric wire 80, a further sufficient contact area can be obtained.

  As shown in FIG. 6, the electric wire is held in the region surrounded by the conductor 40, the electric wire pressing portion 24 of the first housing portion 20, and the electric wire guide wall 29 with the second housing portion 30 closed. A space 130 is formed. Since the electric wire 80 is securely held in the electric wire holding space 130 by surrounding the periphery, the electric wire can be a single wire or a stranded wire.

  In closing the second housing 30, the operation unit 37 is pressed with a finger. The ratio of the distance from the rotation shaft 60 to the blade portion 70 and the distance from the rotation shaft 60 to the operation portion 37 is considered as the lever ratio, and the operation force to the operation portion 37 increases in proportion to this lever, and the blade portion 70 is increased. It will be over. In this embodiment, since the finger operating force is about 3 kg and the lever ratio is about 4, the force applied to the blade portion 70 is 12 kg, and sufficient force to peel off the covering 84 is obtained.

FIG. 10 shows the second embodiment, and FIG. 11 shows the conductor 40 and the blade portion 70 of the third embodiment, in which the square blade portion 74 can be used more effectively.
In FIG. 12, a locking portion 39 is provided at the end of the second housing 30 so that the second housing 30 does not open carelessly.
In addition, since the conductor 40 is configured to be located behind the rotation shaft 60 when the second casing 30 is closed, the second casing 30 has a structure that does not naturally open.

  FIG. 13 shows a fifth embodiment, and FIG. 14 shows a sixth embodiment, in which an elastic body 120 is provided so as to be able to reliably cope with electric wires of different sizes.

  The wire connector of the present invention connects the covered electric wire to the electric wire connector as it is, but depending on the specification, it can be used even with the end of the covered electric wire removed, and can be used with a single wire or a stranded wire. .

10 is a wire connector 20, a first housing portion 22, a box portion 24, an electric wire pressing portion 26, a stopper portion 28, a detent 29, an electric wire guide wall 30, a second housing portion 32, and a covering portion 34. Reference numeral 36 denotes an end portion 37, an operation portion 38, a conductor support portion 39, a locking portion 40, a conductive plate 42, a contact portion 44, a connection portion 50, an insertion hole 60, a rotary shaft 70, a blade portion 72, and a curved blade portion 74. The square blade portion 80 has an electric wire 82, an electric wire core 84, a covering member 84a, a covering member peeling piece 84b, a covering member cut surface 88, an electric wire core surface 120 from which the covering member has been peeled, and an elastic material 130, which is an electric wire holding space.

Claims (4)

  A first housing portion having an insertion hole for inserting an electric wire, a second housing portion pivotally mounted around the rotation axis of the first housing portion, and the second housing portion. It is composed of a conductor in contact with the electric wire core provided in the housing part, and a blade part provided to peel off the covering of the electric wire at the tip of this conductor, and the distance from the rotating shaft to the blade part is It is smaller than the distance from the shaft to the operation part at the end of the second casing part, and an electric wire pressing part is provided inside the first casing part, and the electric wire pressing part and the contact part of the conductor An electric wire connector that provides an electric wire holding space between the electric wires and presses and holds the electric wires in the electric wire holding spaces so that current can be passed between the electric wires and the conductor.   The electric wire connector according to claim 1, wherein the conductor provided in the second housing portion has a contact portion extending on a surface substantially concentric with the electric wire to be inserted.   2. The electric wire connector according to claim 1, wherein the blade portion provided in the second housing portion has a curved blade portion extending in a surface substantially concentric with the electric wire to be inserted.   The electric wire connector according to claim 3, wherein the blade portion provided in the second casing portion has a square blade portion in a part of the curved blade portion.

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