JP2002158048A - Cable connecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable connecting device that can connect a cable with the terminal board by a simple operation and with steadiness. SOLUTION: The device comprises a terminal board 4, a conductive body 5 arranged on this terminal board 4, and a rotating cam 13 which is supported rotatably on the terminal board 4 so that the conductive body 5 and the cam face 13a are opposed each other and in which the distance between the conductive body 5 and the cam face 13a is established variable. The cable 3 which is arranged on the conductive body 5 is pressure contacted to the above conductive body 5 by rotating the above rotating cam 13, and the cable 3 and the conductive body 5 are electrically connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire connection device capable of securely fixing an electric wire by a simple operation.

[0002]

2. Description of the Related Art An electric wire connection device is used to connect an electric wire such as a wire harness or a cable to a power supply side. FIG. 25 and FIG. 26 show a conventional electric wire connection device. The electric wire connection device includes a terminal block 101 on which a conductor 100 is arranged, and a screw 1 for fixing electric wires such as cables.
03. Electric wires 104 such as cables
Terminal fitting 106 attached to core wire 105 of electric wire 104
Are fixed to the conductor 100 by screws 103.

[0003] In the illustrated example, the electric wire connecting device includes an electric wire 1 on one side.
04 is connected to the power supply side, and the other electric wire 104 is connected to the load side such as a motor. Usually, the electric wire 104 on the power supply side
Is connected to the terminal block 101 in advance, and the load-side electric wire 104 is fixed to the terminal block 101 via the screw 103 when a load is used.

[0004]

When the electric wire connection device is used at a work site, various types of work machines are used as required. Therefore, the electric wire 104 on the load side is fixed to the terminal block 101 each time. There is a need. However, since it is necessary to screw the electric wire 104 on the load side to the terminal block 101 with the screw 103, the connection operation is troublesome, and when the load is replaced frequently, the operation is extremely complicated. In addition, the terminal fitting 106 has to be attached to the electric wire 104, and work on site is troublesome. If screwing is performed without the terminal fitting 106, the fixing will be insufficient, and there is a risk of poor contact.

Therefore, a prior art using a rotating cam for connecting the electric wire 104 is disclosed in Japanese Patent Application Laid-Open No. Hei 5-22609. However, according to this prior art, since the core wire of the electric wire is only sandwiched by the rotary cam, the core wire crushed by the rotary cam expands horizontally, so that the vertical movement width of the cam surface of the rotary cam must be increased. In this case, the holding of the core wire becomes insufficient, and the core wire may be detached from the rotary cam.

In particular, since the conductor can be moved up and down by a spring, the vertical movement width of the cam surface of the rotary cam must be further increased. Further, when the core wire of the electric wire is pressed by the rotating cam, the conductor portion on the lower side is lowered, so that the core wire cannot be reliably held.

[0007] As prior art related to the terminal block, Japanese Patent Application Laid-Open No. 2000-125443 and
JP-A-50466, JP-A-6-14220, JP-A-7-182949 and the like are known.

An object of the present invention is to solve the above-mentioned problems and to provide an electric wire connection device capable of securely connecting an electric wire to a terminal block by a simple operation.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a terminal block, a conductor arranged on the terminal block, and a terminal board having a cam surface facing the conductor. A rotatable shaft is rotatably supported, comprising a rotating cam set so that the distance between the conductor and the cam surface can be varied, and an electric wire arranged on the conductor, by rotating the rotating cam, That is, the electric wire is electrically connected to the conductor by being pressed against the conductor. In addition, the present invention provides an arrangement of the electric wire provided on the conductor, a concave portion corresponding to a peripheral surface of the electric wire, and a cam surface in which the rotating cam contacts the electric wire, the peripheral surface of the electric wire. The electric wire is sandwiched between the conductor and the concave portion of the rotary cam. Further, the present invention provides a method of manufacturing a semiconductor device according to the present invention, wherein the rotating cam and the conductor have a concave portion between the concave portions of the conductor such that the concave portion of the rotating cam enters the inside of the concave portion of the conductor in a state where the electric wire is held therebetween. In setting the depth. Further, a plurality of conductors are juxtaposed on the terminal block, wires are fixed to one side of these conductors, and an arrangement portion is formed on the other side of the conductors, which has a concave portion corresponding to the peripheral surface of the wires. In addition, the rotary cams are provided corresponding to these arrangement portions. Also,
The present invention provides a terminal block, a conductor disposed on the terminal block, and a cover which is disposed so as to be able to contact and separate from the conductor, and has an electric wire arrangement portion formed between the terminal block and the conductor. A rotating cam rotatably supported by the terminal block and pressing the cover toward the conductor; and a resilient means interposed between the conductor and the cover. The electric wire arranged on the body is sandwiched between the cover and the conductor by rotating the rotary cam, and the electric wire and the conductor are electrically connected. Further, according to the present invention, the arrangement portion of the electric wire provided between the conductor and the cover portion is formed in a concave portion corresponding to the peripheral surface of the electric wire, and between the concave portions of the conductor and the cover portion. That is, the above-mentioned electric wire is sandwiched. Still further, between the concave portions of the conductor and the cover portion, the depth of the concave portion of the conductor is set so that the concave portion of the cover portion enters the inside of the concave portion of the conductor in a state where the electric wire is sandwiched. I have set it. Also, a plurality of conductors are juxtaposed on the terminal block, an electric wire is fixed to one side of these conductors, and an arrangement portion is formed on the other side of the conductors, the concave portion corresponding to the peripheral surface of the electric wire. The cover portion and the rotary cam are provided corresponding to these arrangement portions.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 13 show a first embodiment of the electric wire connection device of the present invention. 1 to 5 show an electric wire connection device 1 applied to three electric wires. The upper part of FIG. 1 shows an electric wire 2 such as a cable connected to a power supply side, and the lower part shows a load such as a motor. It shows an electric wire 3 such as a connected cable.

In FIG. 1 to FIG.
A terminal block 4 applied to the three electric wires 2 and 3, a conductor 5 fixed to the terminal block 4, a screw 6 for fixing the power supply side electric wire 2 to the conductor 5, 4, supported by
A rotating cam mechanism 7 for fixing the load-side electric wire 3 to the conductor 5 is provided.

The terminal block 4 is assembled in accordance with the number of the electric wires 2 and 3, and the terminal block 4a on both right and left sides is provided.
4b forms a terminal block for one electric wire. Then, depending on the number of the electric wires 2 and 3, the left and right terminal block
The present invention can be applied to a plurality of electric wires by interposing the connecting terminal block 4c, 4d between the a, 4b. In the illustrated example, two connection terminal block blocks 4c, 4c are provided between the left and right terminal block blocks 4a, 4b to apply to three electric wires.
Assemble 4d.

The structure of the conductor 5 will be described with reference to FIGS. The conductor 5 electrically connects the electric wires 2 and 3 to each other, and is integrally fixed to the terminal block 4. The conductor 5 has a screw hole 5a formed on one side for connecting the electric wire 2 on the power supply side, and the electric wire 3 on the load side.
An arc-shaped concave surface 8 corresponding to the peripheral surface of the electric wire 3 is formed coaxially with the electric wire 3 on the other side connected to the electric wire 3.

A terminal 9 is attached to the core wire 2 a of the electric wire 2 on the power supply side, and the terminal 9 is fixed to the conductor 5 by a screw 6. The screw 6 is screwed into the screw hole 5 a via the washer 10 to fix the terminal 9 to the conductor 5.

In the electric wire 3 on the load side, the core wire 3 a is arranged on the concave surface 8 of the conductor 5 and fixed by the rotating cam mechanism 7. The rotary cam mechanism 7 includes a rotary cam 13 rotatably supported via a shaft 12 on a vertical wall 11 of a terminal block 4 provided on both sides of each concave surface 8. The rotating cam 13 has a cam surface 13a that comes into contact with the electric wire 3,
Is formed on the concave surface portion 14 corresponding to the peripheral surface of
Is inserted inside the concave portion 8 of the conductor 5. The cam surface 13a is formed such that the distance between the cam surface 13a and the concave surface portion 14 gradually decreases as the cam surface 13a rotates. The rotating cam 13 is provided with a rod-shaped handle 13b, and the handle 13b is used to rotate the cam surface 13a.

Next, the operation of the electric wire connection device 1 according to the above embodiment will be described with reference to FIGS. 3 to 5 and FIGS. 10 to 13. FIGS. 10 to 13 omit the terminal block 4 to show the movement of the rotary cam 13. The terminal block 4 has two connecting terminal block blocks 4c, 4d assembled between the left and right terminal block blocks 4a, 4b, and three electric wires 2, 3 on the power side and the load side, respectively.
It is configured to be assembled. For convenience of explanation, 1
A case where the electric wires 2 and 3 are assembled will be described. In the electric wire 2 on the power supply side, a terminal 9 is attached to the core wire 2a, and the terminal 9 is fixed to the conductor 5 by a screw 6 via a washer 10. Thus, the electric wire 2 on the power supply side is fixed to the terminal block 4 in advance (see FIG. 3).

Next, the core wire 3a of the electric wire 3 on the load side is inserted into the concave portion 8 of the conductor 5 (see FIG. 4). The core wire 3a of the electric wire 3 on the load side is arranged with a constant width without spreading in the concave portion 8 of the conductor 5 (see FIGS. 11A and 11B). At this time, the rotating cam 13 is rotated by turning the handle 13b so that the concave portion 14 of the cam surface 13a is farthest from the concave portion 8 of the conductor 5 (see FIG. 10).

Then, by turning the handle 13b of the rotary cam 13, the concave portion 14 of the cam surface 13a is
Is rotated so as to approach (see FIG. 12). As a result, the core wire 3a of the load-side electric wire 3 is compressed and clamped by the concave portion 8 of the conductor 5 and the concave portion 14 of the cam surface 13a (see FIG. 5). At this time, the core wire 3a of the electric wire 3 enters the concave surface portion 8 of the conductor 5 while the concave surface portion 14 of the cam surface 13a approaches, so that the circular body is compressed and clamped without being largely collapsed (FIG. 13 (a) (b)).

FIG. 14 to FIG. 24 show a second embodiment of the electric wire connection device of the present invention. In this case, the same parts as those in FIGS. 1 to 5 are denoted by the same reference numerals, and the description of the same parts will be omitted. In this embodiment, the core 3a of the electric wire 3 on the load side is not directly held by the rotating cam, but the core 3a of the electric wire 3 is
Is to be clamped. Therefore, the rotating cam 1
6 has only a cam surface 16a, and does not have the concave portion 14 as in the first embodiment.

As shown in FIGS. 19 to 22, the conductor 5 used in this embodiment has a notch 17 formed in the middle of the wall 5b on both sides of the concave portion 8. A vertical hole 18 is formed in the bottom surface of the notch 17. On the other hand, the cover 15 has a structure shown in FIGS.
As shown in FIGS. 1, 23 and 24, walls 15a are formed on the lower surfaces on both sides corresponding to the cutouts 17 of the conductor 5, and between the walls 15a, the core of the electric wire 3 is provided on the lower surface side. An arcuate concave portion 19 corresponding to the line 3a is formed. In this wall portion 15a, a hole 18 of the cutout portion 17 is provided.
Is formed in the up-down direction, and a spring 21 is housed and arranged in this hole 20 so that a lower part thereof projects. The cover 15 is attached to the conductor 5 so that the spring 21
Is configured to enter a hole 18 of the cutout 17.

The operation of the electric wire connection device according to the above embodiment will be described. As shown in FIG. 16, the cover 15 is arranged by attaching the wall portion 15 a to the cutout portion 17 of the conductor 5. A spring 21 is previously incorporated in the hole 20 of the wall 15 a of the cover 15, and a part of the lower side of the spring 21 is disposed in the hole 18 of the cutout 17 so that the cover 15 is electrically conductive. Assemble to 5. At this time,
Between the concave portion 8 of the conductor 5 and the concave portion 19 of the cover 15,
It is largely opened by the urging force of the spring 21 (see FIG. 16). Then, the core wire 3a of the electric wire 3 on the load side is inserted between the concave portion 8 of the conductor 5 and the concave portion 19 of the cover 15 (see FIG. 17).

Next, the handle 16b of the rotary cam 16 is turned to rotate the rotary cam 16 so that the cam surface 16a presses the upper surface of the cover 15 against the urging force of the spring 21. As a result, the spring 21 is compressed, the cover 15 moves downward, and the core 3a of the electric wire 3 on the load side is moved.
Is compressed and pinched by the concave portion 8 of the conductor 5 and the concave portion 19 of the cover 15 (see FIG. 18). At this time, the core wire 3a of the electric wire 3 is compressed and clamped by the concave surface portion 8 of the conductor 5 and the concave surface portion 19 of the cam surface 16a without greatly deforming the circular body. In this embodiment,
Since the movement of the cover 15 stops at a position where the wall 15a of the cover 15 abuts on the inner surface of the notch 17 of the conductor 5, there is no possibility that the core 3a of the electric wire 3 is compressed more than necessary.

As described above, according to the present invention, the core 3a of the electric wire 3 is connected to the concave portion 8 of the conductor 5 and the concave portion 1 of the cover 15.
9, the core wire 3a is compressed and held, so that the core wire 3a can be securely held without a possibility of spreading laterally. Also,
Since the vertical movement width of the cam surface 16a of the rotary cam 16 is small, the core wire 3a can be securely clamped.

It should be noted that the present invention is not limited only to the above-described embodiment. For example, in the above-described embodiment,
The case where three wires are connected has been described, but one or two wires may be used, and four or more wires can be applied by adjusting the number of terminal block blocks. Needless to say, the spring means may be a leaf spring or an elastic member such as rubber in addition to a spring, and may be appropriately changed within the scope of the present invention.

[0026]

As described above, according to the electric wire connection device of the present invention, the following effects can be obtained.
2. The terminal board according to claim 1, wherein the terminal board is rotatably supported by the terminal block such that the conductor and the cam surface face each other. And a rotating cam set so that the distance between the conductor and the conductor is variable, and the electric wire arranged on the conductor is pressed against the conductor by rotating the rotating cam to electrically connect the wire and the conductor. Since the wires are electrically connected, the wires are sandwiched between the conductor and the cam surface of the rotating cam, so that the wires can be securely connected. In addition, since it is not necessary to use metal fittings for the terminal, it is economical and operability on site is improved. 3. The electric wire according to claim 2, wherein an arrangement portion of the electric wire provided on the conductor is formed in a concave portion corresponding to a peripheral surface of the electric wire, and a cam surface where the rotating cam contacts the electric wire corresponds to the peripheral surface of the electric wire. Since the electric wire is sandwiched between the conductor and the concave portion of the rotating cam, the core wire of the electric wire is not spread within the concave portion of the conductor, so that the core of the electric wire is sandwiched. The core wire can be securely fixed. 4. The concave portion of the conductor according to claim 3, wherein the electric wire is sandwiched between the concave portion of the conductor and the concave portion of the conductor such that the concave portion of the rotary cam enters inside the concave portion of the conductor. Now that we have set the
The core wire of the electric wire enters the concave portion of the conductor while the concave portion of the cam surface approaches, so that the circular shape of the core wire is compressed and clamped without being largely collapsed. 5. An arrangement according to claim 4, wherein a plurality of conductors are arranged side by side on the terminal block, wires are fixed to one side of these conductors, and concave portions corresponding to the peripheral surface of the wires are formed on the other side of these conductors. To form
Since the rotating cams are respectively provided corresponding to these arrangement portions, a plurality of electric wires can be securely fixed. In claim 5, the terminal block, the conductor disposed on the terminal block, and the conductor are disposed so as to be able to contact and separate from the conductor, and an arrangement portion of the electric wire is formed between the conductor and the conductor. A cover, a rotating cam rotatably supported by the terminal block, and pressing the cover toward the conductor; and a resilient means interposed between the conductor and the cover. The electric wire arranged on the conductor is held between the cover and the conductor by rotating the rotating cam, and the electric wire and the conductor are electrically connected. Thus, the electric wire can be easily supported. Further, since the electric wire is sandwiched between the cover portion and the conductor, there is no possibility that the electric wire may vary. Further, when the electric wire is removed, the cover portion is separated from the conductor by the resilient means, so that the electric wire can be easily replaced. Further, since it is not necessary to use a terminal fitting or the like, it is economical and operability on site is improved. In Claim 6, the arrangement part of the electric wire provided between the conductor and the cover part is formed in a concave part corresponding to the peripheral surface of the electric wire, and the concave part between the conductor and the cover part is formed between the concave parts of the conductor and the cover part. Since the electric wires are sandwiched, it is possible to connect the core wires of the electric wires while maintaining the circular state. 8. The concave part of the conductor according to claim 7, wherein the electric wire is sandwiched between the concave part of the conductor and the concave part of the cover part so that the concave part of the cover part enters inside the concave part of the conductor. Since the length is set, the core of the electric wire can be securely held. 9. The arranging part according to claim 8, wherein a plurality of conductors are arranged side by side on the terminal block, wires are fixed to one side of the conductors, and concave portions corresponding to the peripheral surfaces of the wires are formed on the other side of the conductors. Are formed, and the cover and the rotating cam are provided respectively corresponding to these arrangement portions, so that a plurality of electric wires can be easily connected.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of an electric wire connection device according to the present invention.

FIG. 2 is a front view showing the first embodiment of the electric wire connection device according to the present invention.

FIG. 3 is a sectional view showing an operation of the electric wire connection device of FIG. 1;

FIG. 4 is a sectional view showing an operation of the electric wire connection device of FIG. 1;

FIG. 5 is an AA diagram of FIG. 1 showing the operation of the wire connection device of FIG. 1;
It is a line sectional view.

FIG. 6 is a plan view showing the conductor of FIG. 1;

FIG. 7 is a side view showing the conductor of FIG. 1;

FIG. 8 is a front view showing the conductor of FIG. 1;

FIG. 9 is a sectional view taken along line BB of FIG. 6;

FIG. 10 is a sectional view showing the movement of the rotating cam.

11A is a cross-sectional view showing the movement of the rotary cam of FIG. 10, and FIG. 11B is a front view of FIG.

FIG. 12 is a sectional view showing the movement of the rotary cam of FIG.

13A is a cross-sectional view showing the movement of the rotary cam of FIG. 10, and FIG. 13B is a front view of FIG.

FIG. 14 is a plan view showing a second embodiment of the electric wire connection device according to the present invention.

FIG. 15 is a front view showing a second embodiment of the electric wire connection device according to the present invention.

FIG. 16 is a sectional view showing the operation of the electric wire connection device of FIG.

FIG. 17 is a sectional view showing the operation of the electric wire connection device of FIG.

FIG. 18 is a sectional view showing the operation of the electric wire connection device of FIG.

FIG. 19 is a conceptual diagram showing the operation of the conductor and the cover of FIG.

FIG. 20 is a sectional view showing the cover of FIG. 19;

21A is a side view showing the operation of the conductor and the cover of FIG. 19 without a spring, and FIG. 21B is a front view of FIG.

FIG. 22A is a plan view showing the conductor of FIG. 14;
14B is a side view showing the conductor of FIG. 14, and FIG.
It is a front view which shows the conductor of FIG.

FIG. 23 (a) is a plan view showing the cover of FIG. 14,
14B is a side view showing the cover of FIG. 14, and FIG.
It is a front view which shows the cover of FIG.

FIG. 24 is a sectional view taken along line CC of FIG.

FIG. 25 is a sectional view showing a conventional electric wire connection device.

FIG. 26 is a sectional view showing a conventional electric wire connection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric wire connection device 2 Electric wire 3 Electric wire 3a Core wire 4 Terminal block 4a, 4b, 4c, 4d Terminal block 5 Conductor 6 Screw 7 Rotating cam mechanism 8 Concave surface 9 Terminal 13 Rotating cam 13a Cam surface 13b Handle 14 Concave surface 15 Cover 16 Rotating cam 16a Cam surface 17 Notch 18 hole 19 Concave surface 20 hole 21 Spring

Claims (8)

[Claims] 1. A terminal block, a conductor disposed on the terminal block, and a rotatably supported shaft on the terminal block so that the conductor and the cam surface face each other. And a rotating cam set so that the distance between the conductor and the conductor is variable, and the electric wire arranged on the conductor is pressed against the conductor by rotating the rotating cam to electrically connect the wire and the conductor. An electric wire connection device characterized by being electrically connected. 2. An arrangement portion of an electric wire provided on the conductor is formed in a concave portion corresponding to a peripheral surface of the electric wire, and a cam surface where the rotating cam contacts the electric wire corresponds to a peripheral surface of the electric wire. The electric wire connection device according to claim 1, wherein the electric wire is formed between the concave portions of the conductor and the rotating cam, and the electric wire is sandwiched between the concave portions of the conductor and the rotating cam. 3. The depth of the concave portion of the conductor such that the concave portion of the rotary cam enters the inside of the concave portion of the conductor while the electric wire is held between the rotary cam and the concave portion of the conductor. The electric wire connection device according to claim 2, wherein the electric connection is set. 4. An arrangement part in which a plurality of conductors are arranged side by side on said terminal block, an electric wire is fixed to one side of these conductors, and a concave portion corresponding to the peripheral surface of the electric wire is formed on the other side of these conductors. The electric wire connection device according to any one of claims 1 to 3, wherein the rotary cams are respectively provided corresponding to the arrangement portions. 5. A terminal block, a conductor disposed on the terminal block, and an electric wire disposing portion formed between the conductor and the conductor so as to be able to contact and separate from the conductor. A cover, a rotating cam rotatably supported by the terminal block, and pressing the cover toward the conductor; and a resilient means interposed between the conductor and the cover. An electric wire connecting device, wherein an electric wire arranged on an electric conductor is sandwiched between the cover portion and the electric conductor by rotating the rotary cam, and the electric wire and the electric conductor are electrically connected. . 6. An electric wire arrangement portion provided between the conductor and the cover portion is formed in a concave portion corresponding to a peripheral surface of the electric wire, and the electric wire and the cover portion are interposed between the concave portions of the conductor and the cover portion. The electric wire connection device according to claim 5, wherein the electric wire is sandwiched. 7. A depth of the concave portion of the conductor such that the concave portion of the cover portion enters the inside of the concave portion of the conductor while the electric wire is held between the concave portion of the conductor and the concave portion of the cover portion. 7. The electric wire connection device according to claim 6, wherein the distance is set. 8. An arrangement part in which a plurality of conductors are arranged side by side on said terminal block, wires are fixed to one side of these conductors, and concave portions corresponding to the peripheral surface of the wires are formed on the other side of these conductors. The electric wire connection device according to any one of claims 5 to 7, wherein the cover portion and the rotating cam are respectively provided corresponding to the arrangement portions.