JP2016105357A - Wire connection tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire connection tool capable of easily connecting wires with each other regardless of diameters of wires.SOLUTION: The wire connection tool comprises: a substantially concave-shaped wire connection tool body 1 including a sidewall part 1b and a sidewall part 1c rising from both sides of a bottom face part 1a; hold members 9 which are provided to be movable close to and away from the sidewall parts 1b and 1c; a resilient machine 10 which energizes the hold members 9 towards the sidewall parts 1b and 1c; and a movable member 18 that is interposed between the hold members 9. The wire connection tool body 1 includes wire receiving parts 5 on inner surfaces of the sidewall parts 1b and 1c. The hold member 9 includes a wire gripping part 12 at a position opposite to the wire receiving part 5 and a side slope 15 at a position at an opposite side of the wire holding part 12. The movable member 18 includes a tapered lower slope 22 which is inclined in the same direction as the side slope 15, in a bottom part and by sliding the side slope 15 and the lower slope 22 in contact with each other, wires 2 and 3 are gripped by the wire receiving parts 5 and the wire holding parts 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a connecting tool for connecting electric wires, and more particularly to an electric wire connecting tool that can easily connect electric wires having different thicknesses or electric wires having the same thickness.

  Conventionally, an upper and lower clamping device made of a conductive material such as copper or aluminum that clamps a busbar and a branching wire on both sides is provided as one of the connecting tools for connecting wires, and the thermal expansion coefficient of the clamping device is larger than that of the clamping device. There is known a structure in which low pressure iron and stainless steel upper and lower pressing metal fittings are stacked and clamped by tightening with bolts and nuts (for example, see Patent Document 1).

  As another connector, as shown in FIG. 9 and FIG. 10, a wedge having channel portions 30 and 30 having both side portions bent into a C shape and elastic inclined surfaces 31 and 31 having both side walls expanding from the bottom to the top. A block 32 is provided, and cable conductors 33 and 33 are inserted into the channel portion 30 and the C-shaped member 35 and the wedge block 32 are fastened and connected by bolts 34 (see, for example, Patent Document 2).

Japanese Examined Patent Publication No. 37-10116 Japanese Patent No. 2603546

  However, the wire connector disclosed in Patent Document 1 has an effect of suppressing overheating by using a presser fitting having a lower expansion coefficient than that of the upper and lower clamping tools, but not only is the molding of the clamping tool difficult. Since it is separated from the presser fitting, there is a problem that the tightening work becomes complicated, the connecting work takes time, and the work efficiency is poor.

  Moreover, although the electric wire connector of the said patent document 2 is capable of sufficient electrical and mechanical coupling with respect to a cable having a diameter suitable for the groove portion, the range in which the diameter of the cable is suitable is narrow and out of the range. There is a problem that both electrical and mechanical couplings are significantly deteriorated.

  Then, this invention was developed in view of the above problems, and it aims at providing the electric wire connector which can connect electric wires easily irrespective of the diameter of an electric wire.

  In order to solve the above-described problems and achieve the object, an electric wire connector according to the present invention includes an electric wire connector main body made of a substantially concave conductive material having side wall portions that rise from both sides of a bottom surface portion. A plurality of clamping members provided so as to be movable toward and away from the side wall part, an elastic machine for biasing the clamping members in the direction of the side wall part, and a movable member interposed between the clamping members, The wire connector main body has an electric wire receiving portion on the inner surface of the side wall portion, and the clamping member has an electric wire gripping portion at a position facing the electric wire receiving portion, and the electric wire holding portion. The movable member has a tapered lower inclined surface that is inclined in the same direction as the side inclined surface of the holding member at the bottom thereof. The side inclined surface of the member and the lower inclined surface of the movable member are brought into sliding contact with each other. It is characterized in that gripping the wire between the wire receiving portion and the electrical wire gripping unit by.

  According to this, if the electric wire is pressed and inserted between the front end portion of the side wall portion and the front end portion of the holding member, the holding member moves in a direction away from the side wall portion against the urging force of the ammunition and is introduced. Opens in the length direction. The electric wire is held between the electric wire gripping portion and the electric wire receiving portion when the holding member returns to the side wall portion side, and is temporarily stopped. Thereafter, when the movable member is moved downward to bring the lower inclined surface and the side inclined surface of the holding member into sliding contact with each other and pressed, the electric wire between the holding member and the side wall is gripped by the action of the wedge. Since the temporarily fixed state is created by the urging force of the ammunition and the electric wires can be connected by a single fastening operation, it is possible to reduce the time for the connection operation and to improve the work efficiency.

  Here, it is preferable that the electric wire receiving portion is formed in a semicircular concave surface having the same curved surface as the peripheral surface of the electric wire, and the electric wire gripping portion is formed in a substantially V-shaped groove.

  As a result, one side of the electric wire is fitted into the concave surface, and the other side is pressed by the urging force of the ammunition and the downward movement of the movable member, so that the electric wire is engulfed and held in the substantially V-shaped groove. The electric wire does not move or shift, and a reliable connection is possible.

  Here, it is preferable that the pair of the wire receiving portion and the wire gripping portion and the other wire receiving portion and the wire gripping portion have different sizes.

  As a result, electric wires having different diameters can be connected to each other, and a thick electric wire and a thin electric wire can be appropriately connected.

  Here, it is preferable that the upper end of the side wall portion of the electric wire connector main body has a tip inclined surface inclined inward, and the clamping member has an upper inclined surface opposite to the tip inclined surface.

  As a result, a substantially inverted C shape is formed by the inclined surface at the upper end of the side wall portion and the inclined surface at the upper end of the clamping member, so that the electric wire can be easily inserted.

  As described above, according to the present invention, the electric wire is temporarily fixed with the primary pinch between the electric wire gripping portion and the electric wire receiving portion due to the urging force of the ammunition, and after confirming the deviation and deviation of the electric wire, the movable member is moved down. By the final tightening to be moved, the pinching member is pressed by the action of the wedge action, and a strong connection is possible. Even if an external force or the like is applied, this connection does not come off and can withstand long-term use. In addition, the movable member and the clamping member can be easily assembled and disassembled, and can be replaced if damaged. In addition, the movable member and the holding member can be applied to electric wires of any diameter by replacing them with ones that match the diameter size of the electric wires.

It is a front view of the state which pinched the electric wire. It is a front view which shows the state which moves from the state before pinching an electric wire. It is a front view of the state in which the lower surface of a movable member contact | abuts to the bottom face part of a connection tool. It is a top view in the state where an electric wire is connected. It is a perspective view of an electric wire connector main part. It is a perspective view of a clamping member. It is a perspective view of a movable member. It is the perspective view which armored the bullet machine on the axis. It is the front view which accommodated the electric wire in the conventional connector. It is the front view which accommodated and tightened the electric wire in the conventional connector.

Hereinafter, embodiments of the electric wire connector according to the present invention will be described.
The wire connector main body 1 is a substantially concave connector main body made of a conductive material such as copper or aluminum. In the electric wire connector main body 1, side wall portions 1b and side wall portions 1c rising from the bottom surface portion 1a are extended in the length direction. In addition, although the side wall part 1b and the side wall part 1c employ | adopt the thing from which thickness differs, the thing of the same thickness may be sufficient.

  The semicircular concave surface 4 having the same curved surface as the peripheral surface of the thick electric wire 2 is formed on the upper inner surface of the side wall portion 1b, and the semicircular shape having the same curved surface as the peripheral surface of the thin electric wire 3 is formed on the upper inner surface of the side wall portion 1c. An electric wire receiving portion 5 including the concave surface 4 is provided in the length direction, and is formed so that the electric wire 2 and the electric wire 3 are fitted respectively. The tip inclined surface 6 is an inclined surface at the tip of the side wall portion in which the upper ends of the side wall portion 1b and the side wall portion 1c are inclined downward, so that the electric wire 2 and the electric wire 3 can be easily introduced. The bolt hole 7 is a screw hole drilled in the central portion of the bottom surface portion 1a, and the shaft hole 8 is a hole provided on the front side and the rear side below the side wall portion 1b and the side wall portion 1c.

  The clamping member 9 is a member disposed via the coil spring 10 at a position facing the side wall portion 1b and the side wall portion 1c, respectively, and in the width direction, that is, the side wall portion 1b by the urging force of the coil spring 10 that is an ammunition machine. And it can move in the direction of contact with and away from the side wall 1c. The clamping member 9 includes an electric wire gripping portion 12 configured by a V-shaped groove 11 formed in a substantially V shape at a position facing the electric wire receiving portion 5. The clamping member 9 includes a bottom portion 13 that slides with the bottom surface portion 1a of the electric wire connector main body 1, an electric wire gripping portion 12, an upper inclined surface 14 that is inclined in a direction opposite to the inclination direction of the tip inclined surface 6, and an electric wire gripper. The side inclined surface 15 is a surface that is located on the opposite side of the portion 12 and is inclined in the direction opposite to the upper inclined surface 14, and a vertical portion 16 that receives the coil spring 10.

  The cut portion 17 is a cut formed by cutting the side inclined surface 15 of the holding member 9 shallowly in the length direction. The lower inclined surface 22 of the movable member 18 is accommodated in the cut portion 17 so that It is designed not to escape. The upper inclined surface 14 of the sandwiching member 9 and the side wall portion 1b and the front end inclined surface 6 of the side wall portion 1c are inclined in opposite directions, and the upper inclined surface 14 and the front end inclined surface 6 are formed in a substantially inverted C shape. It becomes easy to insert the electric wire 2 and the electric wire 3.

  The movable member 18 is a trapezoidal member interposed between the sandwiching members 9, and is a tapered lower inclined surface that is connected to both side surfaces 20 of the top plate 19 and gradually becomes narrower toward the bottom surface 21. 22 is provided. The bolt insertion hole 23 is a hole for inserting a bolt drilled in the center of the top plate 19. The lower inclined surface 22 of the movable member 18 is inclined in the same direction as the side inclined surface 15 of the holding member 9, and the movable member 18 is moved downward to slide with the side inclined surface 15 of the holding member 9. In contact with each other, a wedge action is generated, and the electric wires 2 and 3 are firmly held by the side wall portion 1b, the electric wire receiving portion 5 of the side wall portion 1c, and the electric wire gripping portion 12 of the clamping member 9.

  The shaft 24 is a shaft that passes through the shaft hole 8 that is drilled near the front and rear ends of both the side wall 1b and the side wall 1c. By fitting the coil spring 10 on the outer peripheral surface, the clamping member 9 is biased toward the side wall 1b and the side wall 1c.

  The electric wire connector main body 1, the clamping member 9, and the movable member 18 configured as described above are combined to form an electric wire connector. That is, a plurality of clamping members 9 are arranged on the left and right sides between the side wall 1b and the side wall 1c of the electric wire connector main body 1, and the coil spring 10 is interposed between them, and the shaft 24 is inserted from the shaft hole 8 to hold the clamping member 9. If it passes, it will be in the state which the clamping member 9 contact | abuts to the side wall part 1b and the side wall part 1c by the urging | biasing force of the coil spring 10, respectively. Then, the movable member 18 is interposed between the left and right clamping members 9, the spring washer 26 and the washer 27 are fitted into the bolt 25, the bolt is inserted into the bolt insertion hole 23, and the tip is screwed into the bolt hole 7. To do.

  In this state, when the electric wires 2 and 3 are pushed in from above the substantially V-shaped portion formed by the side wall portion 1b, the tip inclined surface 6 of the side wall portion 1c, and the upper inclined surface 14 of the holding member 9, The member 9 moves against the urging force of the coil spring 10 to move away from the side wall portion 1b and the side wall portion 1c, and opens the electric wire 2 and the electric wire 3 between the electric wire receiving portion 5 and the electric wire gripping portion 12. It will be in the state temporarily stopped. If the bolt 25 is screwed from this temporarily fixed state, the lower inclined surface 22 of the movable member 18 and the side inclined surface 15 of the holding member 9 are in sliding contact with each other, and the holding member 9 is moved by the wedge action of the movable member 18. It will be strongly pressed by the side wall part 1b and the side wall part 1c side, and the electric wire 2 and the electric wire 3 can be held firmly. Unlike the conventional method, the tightening work is only required once, so that the time required for the connection work can be shortened and the work efficiency can be improved.

  In order to release the connection of the electric wire, the bolt 25 which has been tightened is loosened to return to the above-described temporarily fixed state. When the electric wires 2 and 3 are pulled upward, the movable member 18 moves upward, and the clamping member 9 is pulled in a direction away from the side wall portion 1b and the side wall portion 1c against the elastic force of the coil spring 10, thereby opening the mouth. Is opened, the electric wires 2 and 3 are pulled out, and the connection is released.

  As mentioned above, although it demonstrated based on embodiment of the wire connector in this invention, this invention is not limited to these, In the range which achieves the objective of this invention and does not deviate from the summary of invention, it is various. Design changes are possible.

  For example, in the above-described embodiment, a difference is provided in the portion where the wire is supported by making the sizes of the pair of wire receiving portions and the wire gripping portion different from those of the other pair of wire receiving portions and the wire gripping portion. Although an example of enabling connection of a thick and thin electric wire has been shown, it does not prevent both sizes from being the same.

  Moreover, although the example which formed the electric wire receiving part also with the semicircular concave surface which has the same curved surface as the surrounding surface of an electric wire was shown, you may form with the substantially V-shaped groove | channel similar to an electric wire holding part. .

  As described above, the wire connector according to the present invention can be suitably used as, for example, a connector for connecting a pull-down wire to a high-voltage wire laid between utility poles.

DESCRIPTION OF SYMBOLS 1 Electric wire connector main body 1a Bottom face part 1b, 1c Side wall part
2, 3 Electric wire 4 Concave surface 5 Electric wire receiving part 6 Tip inclined surface 9 Holding member 11 V-shaped groove
12 electric wire gripping part 14 upper inclined surface 15 side inclined surface 18 movable member 20 lower inclined surface

Claims (4)

A wire connector main body made of a substantially concave conductive material with side wall portions rising from both sides of the bottom surface portion;
A plurality of clamping members provided so as to be movable in a direction of coming into contact with and separating from the side wall portion;
Ammunition for urging the holding members in the direction of the side walls,
A movable member interposed between the clamping members,
The wire connector main body is:
Each has an electric wire receiving part on the inner surface of the side wall part,
The clamping member is
An electric wire gripping portion at a position facing the electric wire receiving portion;
Having a side inclined surface at a position opposite to the electric wire gripping portion;
The movable member is
The bottom has a tapered lower inclined surface that is inclined in the same direction as the side inclined surface of the clamping member,
An electric wire connector characterized by gripping an electric wire by the electric wire receiving portion and the electric wire gripping portion by slidingly contacting a side inclined surface of the holding member and a lower inclined surface of the movable member. The wire receiving portion is
Formed in a semicircular concave surface with the same curved surface as the peripheral surface of the wire,
The wire connector according to claim 1, wherein the wire gripping portion is formed in a substantially V-shaped groove. The electric wire connector according to claim 1 or 2, wherein the pair of electric wire receiving portions and electric wire holding portions and the other electric wire receiving portion and electric wire holding portions are different in size. The upper end of the side wall portion of the electric wire connector main body has a tip inclined surface inclined inward,
The clamping member is
The electric wire connector according to any one of claims 1 to 3, further comprising an upper inclined surface opposite to the tip inclined surface.