JP3054894B2 - Multi-wire terminal interconnect - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal interconnecting device for a plurality of electric wires, and more particularly to a terminal interconnecting device for a plurality of electric wires capable of connecting the terminals of the electric wires easily and quickly.

[0002]

2. Description of the Related Art In a case, a receiving member for attaching terminals of a plurality of electric wires inserted therein is provided, and a locking spring for pressing the terminals against the receiving member is opposed to the receiving member. Some have a structure provided.

In this conventional multi-wire terminal interconnecting tool, when a plurality of electric wires are to be connected to each other, the user only has to insert the terminals into a case, and the locking spring is moved from the receiving member by the ends. Since the terminal is automatically pushed open in the direction in which the terminal is separated and the terminal enters between the receiving member and the locking spring, the connection can be quickly performed by a simple operation.

[0004]

In this conventional multi-wire terminal interconnecting device, it is good if the electric wire is a single wire having a strong waist, but if the wire is a stranded wire having a weak waist, the above-mentioned spring is pushed open. In such a case, the terminal breaks down and the connection cannot be established.

The present invention has been made to solve the above-mentioned problems (technical problems) of the prior art, and it is possible to quickly and simply connect a single wire or a stranded wire with a simple operation. In the case of a stranded wire, connection can be made without breaking the shape of the terminal, the reliability of conduction is high, and in the case of connection replacement, the terminal removed from the connection tool can be used as it is for reconnection. It is an object of the present invention to provide a multi-wire terminal interconnecting tool.

[0006]

According to the present invention, a plurality of electric wire terminal interconnectors are inserted into the above-mentioned insertion hole in a case having an insertion hole for inserting a plurality of electric wire terminals in parallel. A plurality of wire end receiving members are provided on one side of the space for inserting the plurality of wire terminal insertion spaces, and a plurality of wire end holders are provided on the other side, which are capable of freely moving forward and backward toward the receiving member. A plurality of wire terminals, wherein at least one of the receiving member and the holding member is formed of a conductive material for electrically connecting the plurality of wire terminals. On the rear side of the holding member, there is a holding member contact portion on the side of the holding member and a wedge contact portion on the opposite side, and a space for compressing and shrinking is provided between the two contact portions. A plurality of wire end springs are arranged, Further, the spring has a wedge that can freely intervene at a position between the wedge contact portion of the spring and the wall portion facing the contact portion in the case and retreat therefrom, and the thickness of the wedge is In the state of intervening in the position, the pressing member is pushed out through the spring toward the receiving member into the space where the plurality of wire terminals are to be inserted, and has a thickness capable of simultaneously pressing the plurality of wire terminals inserted therein. It was done. In a case having an insertion hole for inserting a plurality of wire terminals in a parallel state, a plurality of wire terminal insertion spaces to be inserted through the insertion holes are sandwiched, and a plurality of wire terminals are provided on one side thereof. The receiving member for the wire end of the, the other provided with a plurality of pressing members for the wire end that can freely move forward and backward toward the receiving member, and at least one of the receiving member and the pressing member, a plurality of It is made of conductive material to make the wire terminals mutually conductive.
The pressing members for the plurality of wire ends are individually divided into a number corresponding to the plurality of wire ends so as to freely advance and retreat toward the receiving member, and further on the rear side of the holding member, A plurality of wire end springs having a pressing member abutting portion on the side and a wedge abutting portion on the opposite side, and having a space for compressing and contracting between the two abutting portions are arranged. In addition, the pressing member contact portion of the spring is individually divided into a number corresponding to the plurality of wire ends so as to freely press the pressing member, and the wedge contact portion of the spring is further divided. A wedge that can freely intervene at a position between the portion and the wall portion facing the contact portion in the case and is retreatable therefrom. The pressing member is moved toward the receiving member through the plurality of wire ends. Insert scheduled pushed into the space, it is obtained by the thickness plurality in and outside diameter different wire end at the same time pushing it to be inserted therein.

[0007]

A plurality of wire terminals are inserted into the insertion holes, and the wedge is pushed. Then, the pressing member moves forward via the spring, and a plurality of wire terminals are simultaneously sandwiched and connected by the pressing surface and the receiving surface of the receiving member.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIGS. 1 and 2, which show a branch wiring connector A in which three wires can be connected to each other, as an example of a terminal interconnecting tool of a plurality of wires, 1 denotes a case, and reference numeral 2 denotes a case.
5 are formed. Reference numeral 2 denotes an insulating cap formed of, for example, a synthetic resin material. Reference numeral 3 denotes a frame provided in the cap 2, which is formed by bending a metal plate having sufficient rigidity. The strength of the insulating cap 2 is supplemented by the frame 3. Reference numeral 4 denotes a bottom plate provided to prevent the bottom of the cap 2 from being damaged by an electric wire, and is formed of, for example, a metal plate. Reference numeral 5 denotes a cover fitted into the opening of the cap 2 and is formed of a synthetic resin material. Reference numeral 6 denotes an insertion hole provided in the cover 5, and as shown in FIG. 4, in this example, three insertion holes are formed so that three electric wires can be individually inserted. Reference numeral 7 denotes a non-slip projection formed on the lower surface of the cap 2, reference numeral 8 denotes a wedge stopper hole formed near the opening, and reference numeral 9 shown in FIG. In FIG. 1, reference numeral 10 denotes a space formed between the cap 2 and the cover 5 for entering and exiting the wedge, and reference numeral 11 denotes a protrusion protruding from the cover 5 toward the space 10.

Next, reference numeral 14 denotes a space where the electric wire is to be inserted in the case 1 and a place where an electric wire terminal to be inserted through the insertion hole 6 is to be present. 15 is the planned space 14 above
The receiving member is provided on one side of the supporting member, and is provided along the frame 3. As shown in FIG. 2, the receiving member 15 is made of a metal material having good conductivity so that a plurality of electric wires are formed in a series in a waveform so that the ends of the electric wires can be conducted with low resistance. Reference numeral 16 denotes a receiving surface of the receiving member 15,
As shown in FIG. 2, the planar shape is formed in an arc shape so as to be vertically elongated so that the terminal 42 from which the coating of the insulated wire 41 has been stripped can be attached in a straight state, and that it can be attached stably. Next, reference numeral 18 denotes a pressing member provided on the side opposite to the receiving member 15 with the insertion space 14 interposed therebetween, and is provided so as to freely move toward and away from the receiving member 15. Although the holding member 18 is formed of an insulating material, for example, a hard synthetic resin material, the holding member 18 is formed of a metal material having good conductivity, and conduction between the terminals is performed on the side of the holding member 18 via a spring described below. May be performed. Reference numeral 19 denotes a pressing surface of the pressing member 18, which is vertically long so that the terminal 42 of the electric wire can be attached in a straight state, and formed in a circular arc shape as shown in FIG. 2 so that it can be attached in a stable state. I have. 20 is on the holding surface 19
As shown in the figure, the arc-shaped teeth are arranged obliquely downward. Reference numeral 20a denotes an obliquely downward inclined wall of the tooth 20. As shown in FIG. 2, both edges 21 of the holding member 18 on the side of the holding surface 19 are formed as slopes as shown in the drawing, and even when the holding surface 19 holds down the end of a thin electric wire, the edges 21 are formed. Are prevented from contacting the convex portion 15a of the receiving member 15.
The edge 22 opposite to the pressing surface 19 is also formed as an inclined surface as shown in the figure, and spring pieces 30, 31 (described later) provided corresponding to the adjacent pressing member 18 are attached to the pressing member 18. Avoid contact. Reference numeral 23 denotes an engagement piece provided at the upper end of the pressing member 18, and reference numeral 24 denotes a return spring attached to the cover 5, for returning the pressing member 18 to the retracted position retracted from the insertion space 14 as shown in FIG. belongs to.

Next, a structure for pushing the holding member 18 toward the insertion space 14 will be described. 28 is a pressing spring, which is a spring piece 3 extending from a base 29 and upper and lower ends thereof.
0 and 31. The distal ends 30a, 31a of the spring pieces 30, 31 are pressing member contact portions, which are bent inwardly in an arc shape so as to smoothly contact the rear surface of the pressing member 18. As shown in FIG. 3B, the spring 28 has a base 29 for three electric wires.
Are formed in series, while the spring pieces 30, 31 are separated by slits 32 so that each spring piece 30, 31 can individually press the pressing member 18. 33 is base 29
Shows a fitting projection protruding rearward. Next, 34 indicates a wedge. An intervention portion 35 is a base portion 29 which is a wedge contact portion of the spring 28, and a wall portion 1a facing the base portion 29 in the case 1 (in this example, the frame 3 and a cap 2 covering the outside thereof).
The thickness is such that the pressing member 18 is pushed out into the space 14 via the spring 28 in the intervening state at the position. It has dimensions that can be used. The wedge 34 is shown in FIG.
(B), three wires are integrally formed. The wedge 34 is formed of, for example, an insulating material such as a synthetic resin material. 36 is a guide inclined surface of the wedge 34, 37 is a fitting concave portion, 38 is a projecting portion, 39 is a retaining piece, and 40 is a removal hole.

In the branch wiring connector A, the bottom plate 4, the frame 3, and members 15, 18, 28 and the like housed inside the frame are incorporated in the insulating cap 2, and the wedge 34 is further attached to the insulating cap 2 as shown in FIG. )
Finally, the cover 5 is fitted into the opening of the cap 2, and a fitting piece provided on a side surface of the cover is fitted into the cover stopper hole 9 of the cap 2, thereby obtaining the state shown in FIG. (A).

Next, connection of electric wires will be described. The covering of the covered electric wire 41 is removed in advance at its end. The plurality of terminals 42 whose coating has been removed are inserted into the insertion spaces 14 through the insertion holes 6 as shown in FIG. Next, the wedge 34 is pushed in as shown in FIG. The pushing may be performed in a state as shown in the figure using a tool for pushing a wedge, for example, pliers 43 as shown in FIG. In this case, it is preferable to prevent the connector A from slipping off the pliers 43 by using the non-slip projection 7. In the process of pushing the wedge 34 as described above,
The guide slope 36 displaces the spring 28 and enters between the base 29 of the spring 28 and the wall 1a of the case 1. in this case,
The retaining piece 39 advances along the groove 12 formed by the lack of the frame 3. Then, when the intervention portion 35 of the wedge 34 is pushed to a predetermined position, the fitting projection 33 of the spring 28 fits into the fitting recess 37 of the intervention portion 35. With this fitting, the wedge 34 is in a state where it is prevented from being pulled out. When the wedge 34 is pushed in as described above, the pressing member 18 advances as shown in FIG. 1B via the spring 28, and the pressing member 18 is moved toward the receiving member 15 by the elasticity of the spring pieces 30, 31. Energize. Due to this urging force, the terminal 42 is sandwiched between the pressing surface 19 of the pressing member 18 and the receiving surface 16 of the receiving member 15 in a straight state. Thereby, the terminal 42 and the receiving member
15 is an extremely good electrical connection state. The clamping of the terminal 42 as described above is similarly performed at the terminal of each electric wire inserted through the insertion hole 6, and each electric wire is connected to a receiving member.
Good electrical connection via 15 is achieved. In the above case, even if the terminal 42 is thick or thin, the space between the two contact portions of the spring 28, that is, the spring piece 30,
The space between the distal end portions 30a, 31a of the base 31 and the base 29 is elastically pressed and compressed, so that the terminal of any thickness is pinched between the receiving surface 16 and the pressing surface 19 with an appropriate pinching force. It is.

When the terminal 42 is pinched as described above, even if the pressing surface 19 of the pressing member 18 presses the terminal 42 with a large force, the pressing surface 19 is pressed against a large number of teeth 20 from top to bottom. The pressing force is dispersed and the terminal 42 is pressed with a uniform pressing force. Since the teeth 20 are arc-shaped as described above, the terminal 42
Is pressed as if wrapped around it. On the other hand,
Since the receiving surface 16 has an arc shape, the receiving surface 16 surrounds the terminal 42 from the periphery. Due to these circumstances, the terminal
Reference numeral 42 denotes a straight state, and is sandwiched between the receiving member 15 and the holding member 18 without substantially breaking the outer shape of a round horizontal cross section.

Next, for example, when extracting the terminal 42 of the wire once connected as described above for the purpose of changing the connection of the wire,
In the state shown in FIG. 1B, a thin rod, such as a screwdriver, is inserted from the stop hole 8 of the cap 2 to the hole 40 of the wedge 34, and the wedge 34 is slightly lifted upward.
Then, the fitting between the fitting projection 33 and the fitting recess 37 is released. In this state, the upper end of the wedge 34 is pulled up to the state shown in FIG. Thus, the pressing spring 28 is restored to the state as shown in FIG. 1A, and the pressing member 18 is returned to the position retracted from the space 14 as shown in FIG. Terminal 42
Loses the power to press. In this state, the terminal 42 may be pulled out from the insertion hole 6. The pulled-out terminal 42 can be used for reconnection as it is, since its outer shape is hardly lost. The wedge 34 pulled up to the state as shown in FIG. 1A is in a state where the overhanging portion 38 comes into contact with the convex portion 11 and the retaining piece 39 fits into the stopper hole 8. (A) is prevented from being accidentally removed.

Since the branch wiring connector as described above is light and short, it can be used in a state in which a large number is stored in a joint box. When a single wire connection is made, the wedge 34 may be inserted before the terminal is inserted. In this case, since the inclined wall 20a of the tooth 20 is obliquely downward, when the terminal is pushed in from the insertion hole, the tip of the terminal is guided by the inclined wall 20a and advances while pushing the holding member 18 to the predetermined position. Plugged in. When a single wire is inserted and then pulled out, the wire may be pulled alternately left and right while holding the wire with one hand and holding and pulling the connector A with the other hand. Furthermore, the relationship between the protrusion and the recess in the fitting protrusion 33 and the fitting recess 37 may be opposite.

[0016]

As described above, according to the present invention, when the electric wires of a plurality of electric wire terminals 42, 42... 42 are connected to each other, the plurality of electric terminals 42 are inserted one after another from the insertion hole 6. After the insertion into the scheduled space 14 and the insertion is completed, the pressing member 18 for a plurality of wire ends is advanced by an operation of only pushing the wedge 34 next, and the holding member 18 and the plurality of wire terminals are moved. This has the effect of sandwiching each terminal 42 with the receiving member 15 for electrical connection and electrically accurately connecting each other. This is, as a first point,
The connection work between the plurality of wire terminals 42, 42... 42 can be performed by a simple operation of simply inserting the plurality of wire terminals 42 into the insertion space 14 and then pushing the wedge 34. There is an effect that the connection work between the terminals 42, 42,.

The second point is that, even after the plurality of wire terminals 42, 42,... 42 are once inserted into the insertion space 14 as described above, as the next step, the clamping is not performed. Can be freely inserted and removed even with a weak stranded wire, so depending on the wiring, for example, close the wires for large current at the center or rearrange the wires for small current at the end. There is freedom such as
After the arrangement is determined, there is an effect that the plurality of wire terminals 42, 42,... 42 can be connected to each other simply by pushing the wedge 34 as described above.

In addition, in the present invention, both the plurality of wire end pressing members and the plurality of wire end springs can be individually moved forward and backward toward the receiving member. Since the wires are divided into the number corresponding to the wire ends, a plurality of wires having different outer diameters to be inserted into the insertion space 14 can be simultaneously pressed and connected to each other by a simple operation of merely pushing the wedge 34 in. effective.

In addition, even with the simple operation as described above, even if it is possible to connect not only a single wire but also a stranded wire, in the connected state, the terminal 42 is connected to the receiving surface 16 of the receiving member 15 and the pressing member 18. There is a feature that the holding surface 19 is sandwiched between two surfaces 16 and 19. This means that even when a weakly twisted stranded wire is connected, a plurality of wire terminals 42,
42 have a large contact area between each other and the receiving surface 16 or the holding surface 19, and a plurality of wire terminals 42, 42,.
There is an effect that the reliability of mutual conduction is high.

[Brief description of the drawings]

FIG. 1A is a longitudinal sectional view of a terminal interconnecting device for a plurality of electric wires in a state where electric wires are inserted, and FIG. 1B is a longitudinal sectional view in a state where a wedge is pushed in and an electric wire is sandwiched.

FIG. 2 is a sectional view taken along line II-II in FIG.

3A is a perspective view of a pressing member, and FIG. 3B is a perspective view of a pressing spring and a wedge.

FIG. 4 is a perspective view of a multi-wire terminal interconnector.

FIG. 5 is a diagram illustrating an operation of pushing a wedge.

[Explanation of symbols]

 1 case 6 insertion hole 14 space to be inserted 15 receiving member 18 pressing member 28 pressing spring 34 wedge 41 electric wire

Claims (4)

(57) [Claims] In a case having an insertion hole into which a plurality of wire terminals are inserted in parallel, one side of the insertion space for the plurality of wire terminals to be inserted into the insertion hole is sandwiched. One side has a plurality of wire end receiving members, and the other side has a plurality of wire end pressing members that can freely move forward and backward toward the receiving member, and at least one of the receiving member and the pressing member. One is a multi-wire terminal interconnecting tool formed of a conductive material for conducting a plurality of electric wire terminals to each other. A plurality of wire terminal springs having a member contact portion and having a wedge contact portion on the opposite side, and further having a space for compression between the two contact portions, are disposed, Further, in the wedge contact portion of the spring and the case, A wedge capable of intervening at a position between the abutting portion and the opposing wall portion and retreating therefrom is provided, and the thickness of the wedge is set via the spring in the state where the wedge is interposed at the position. A terminal interconnecting device for a plurality of electric wires, wherein a member is extruded into the space for inserting the plurality of electric wire terminals toward the receiving member, and the thickness is set so as to simultaneously press the plurality of electric wire terminals inserted therein. . 2. The multi-wire terminal interconnecting device according to claim 1, further comprising a return spring for urging the pressing member in a direction to withdraw the pressing member from the insertion space. 3. A pair of fitting projections and fitting recesses are formed on the wedge abutment portion and the wedge of the spring so that the wedges are fitted to each other when the wedge is interposed at the intervention position. 2. The multi-wire terminal interconnect according to claim 1, wherein: 4. In a case having an insertion hole into which a plurality of wire terminals are inserted in a parallel state, one side of the insertion space for the plurality of wire terminals to be inserted through the insertion hole is provided. One side has a plurality of wire end receiving members, and the other side has a plurality of wire end pressing members that can freely move forward and backward toward the receiving member, and at least one of the receiving member and the pressing member. One is formed of a conductive material for conducting a plurality of wire terminals to each other, and furthermore, the plurality of wire terminal holding members are individually movable forward and backward toward a receiving member. At the back side of the holding member, there is a holding member contact portion on the side of the holding member, and a wedge contact portion on the opposite side, and The space between the abutment parts is a space for compression A number of springs for wire ends are provided, and the pressing member abutting portions of the springs are individually divided into a number corresponding to the plurality of wire ends so as to freely press toward the pressing member. A wedge that can freely intervene at a position between the wedge contact portion of the spring and the wall portion facing the contact portion in the case and retreat therefrom, and has a thickness of the wedge, In the state of intervening at the position, the holding member is pushed out through the spring toward the receiving member into the space for inserting the plurality of wire ends, and a plurality of wire ends having different outer diameters inserted therein. Characterized in that the thickness is determined so that the pressure can be pressed simultaneously.