JPH0141165Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a lead wire connection terminal suitable for use in audio equipment and various other electrical devices.
In particular, in a lead wire connection terminal that uses a lead wire presser that only performs sliding motion, and presses and clamps one end of the lead wire after being inserted into the insertion hole provided in the terminal part, This invention relates to a lead wire connecting terminal that enables easy and quick connection by ensuring that the inserted lead wire can be pressed and clamped in a good condition without twisting or tearing.

Prior Art Lead wires are used to connect lead wires for inputting and outputting signals, etc. in connection terminals of speaker devices and amplifiers that make up stereo equipment, antenna terminals and ground terminals of television receivers, and various other electronic and electrical devices. Connection terminal is used.

In this case, if the lead wire connection terminal is of a type in which the lead wire is pressed and clamped with the lead wire inserted into the through hole provided in the terminal part, the lead wire inserted into the through hole may rotate due to the rotation of the knob. It had the inconvenience of falling apart or twisting and tearing apart due to force.

Therefore, conventionally, lead wire connection terminals used in relatively high-end models use a lead wire pressing body that only slides without rotating motion, and one end of the lead wire to be connected is pressed into the terminal. By operating the rotary knob while the lead wire is inserted into the through hole provided in the knob, the lead wire presser slides due to the screw feeding action of the threaded part fixed to the knob, and rotational force is applied to the lead wire to be connected. A lead wire connection terminal is used that is configured to clamp and fix the lead wire by moving the lead wire pressing body without applying any force.

A conventional lead wire connection terminal using such a lead wire pressing body is, for example, a rotary knob rotatably attached to a terminal block, inserted inside the rotary knob and screwed into the rotary knob, and A lead wire pressing body is provided that is held on the terminal block in a slidable state in the axial direction of the rotary knob, and the lead wire pressing body is slid by screw feeding action as the rotary knob rotates, and the terminal block is A device is known in which the lead wire is sandwiched between the lead wire presser and the lead wire presser so that the lead wire presser does not rotate.

1 to 3 are configuration diagrams showing an example of a conventional lead wire connection terminal, in which 1 is a partially cutaway front view, 2 is a sectional view taken along the line 1, and 3 is a sectional view taken along the line 1. . In the drawing, 1 is a terminal board, 2 is a metal terminal block, 2A is a groove for inserting the lead wire, 2B is a screw part, 2C is a flange part, 3 is an insulating bush, and 3A is a groove for inserting the lead wire. 4 is a notch, 4 is a rotary knob, 4A is a female thread groove provided on the inside thereof, 5 is a lead wire presser, 5A is a guided shaft portion thereof, 5B is a disc portion, 5C is a disc portion 5B 6 is a washer, 7 is a nut,
8 is a lug plate, 9 is a compression spring, 10 is a collar, 11
indicates the lead wire to be connected.

In the conventional lead wire connection terminal shown in FIGS. 1 to 3, a lead wire 11 is shown inserted and clamped. With this conventional lead wire connection terminal,
After inserting the lead wire 11 to be connected to the insertion groove 2A of the terminal block 2 with the lead wire pressing body 5 moved to the position indicated by the chain line in FIG. Move the lead wire pressing body 5 provided inside to the position indicated by the solid line, and press the terminal block 2.
and the lead wire pressing body 5.
1 is configured to clamp and fix the device.

Next, the structure of the conventional lead wire connection terminal shown in FIGS. 1 to 3 and the operation of clamping and connecting the lead wires will be explained.

First, a metal terminal block 2 is attached to a terminal board 1 . That is, the screw portion 2B of the terminal block 2 is inserted into the terminal plate 1, and the terminal block 2 is tightened and fixed by a pair of nuts 7 via the washer 6. In addition,
A lug plate 8 is attached between the pair of nuts 7 to connect lead wires as necessary.

In addition, the terminal block 2 has a groove 2A extending parallel to the axial direction from approximately the center in the long axis direction to the tip.
is provided. This groove 2A is formed in a so-called slot that passes through the terminal block 2 in the diametrical direction over its entire length, and in the lower part thereof, that is, in the vicinity of the - line in FIG. 1, the lead wire 11 is inserted. It is considered to be a hole. Furthermore, a flange portion 2C is provided at the tip of this groove 2A. Note that an insulating bushing 3 made of synthetic resin is fitted around the outer periphery of the terminal block 2.

On the other hand, a rotary knob 4 made of synthetic resin is rotatably attached to the outer periphery of the tip of the terminal block 2.
A female screw groove 4A is provided on the inner periphery of the rotary knob 4.

A collar 10 is screwed into the female thread groove 4A of the rotary knob 4 and fixed by caulking to the inner periphery of the tip of the rotary knob 4 on the side of the insulating bush 3.

This collar 10, that is, the collar 10 inserted between the flange portion 2C at the tip of the terminal block 2 and the tip surface of the insulating bushing 3, moves the rotary knob 4 in the axial direction with respect to the terminal block 2. Limited range. Further, a compression spring 9, which is a relatively strong elastic body, is fitted between the collar 10 and the flange portion 2C. has been moved to the tip side.

Further, inside the rotary knob 4, a metal lead wire pressing body 5 is inserted. This lead wire pressing body 5 is integrally provided with a disk portion 5B having a male thread groove 5C on its outer periphery and a flat guided shaft portion 5A.

The male thread groove 5C provided on the outer periphery of the disc portion 5B of the lead wire pressing body 5 is connected to the female thread groove 4 of the rotary knob 4.
A, and its guided shaft portion 5A
is inserted into the groove 2A of the terminal block 2, and the groove 2A is inserted into the groove 2A of the terminal block 2.
It is configured such that rotation around the axis relative to the terminal block 2 is prevented within A, and only sliding movement in the axial direction relative to the terminal block 2 is allowed.

Therefore, the lead wire pressing body 5 has its guided shaft portion 5A guided by the groove 2A of the terminal block 2,
Further, movement in the axial direction is regulated by the compression spring 9, and the terminal block 2 is held in a state where it can freely slide in the axial direction with respect to the rotary knob 4 which is rotated at a fixed position. Note that the insulating bush 3 is provided with a notch 3A for inserting a lead wire, which matches the groove 2A of the terminal block 2.

With such a configuration, in the conventional lead wire connection terminal shown in FIGS. When the rotary knob 4 is rotated in a predetermined direction at a fixed position, the lead wire pressing body 5 is moved by the screw feeding action of both screws 4A and 5C.
In FIGS. 1 and 2, it is slid from the position indicated by the chain line to the position indicated by the solid line. That is, by rotating the rotary knob 4,
At the screwing position between the male thread groove 5C on the outer periphery of the disc part 5B of the lead wire pressing body 5 and the female thread groove 4A on the inner periphery of the rotary knob 4, the disc part 5B side is aligned with the rotary knob 4 in FIG. 1 and 2, the lead wire 11 is clamped and held between the tip end surface of the lead wire pressing body 5 and the bottom surface of the groove 2A of the terminal block 2, and is connected.

In this case, the tip of the lead wire pressing body 5, that is, the surface facing the terminal block 2,
1, the compression spring 9 is not compressed.
Then, the tip of the lead wire pressing body 5 is connected to the lead wire 1.
When the rotary knob 4 is further rotated after crimping 1, the crimping spring 9 is compressed, and its crimping repulsion force, that is, spring force is further applied, and the lead wire 11 is strongly and elastically pinched without strain. Ru.

As described above, according to the conventional lead wire connecting terminal shown in FIGS. A surface facing the terminal block 2,
The lead wire 11 is connected to the bottom of the groove 2A of the terminal block 2.
Since the lead wires 11 are sandwiched in parallel and elastically, there is no problem of the inserted lead wires 11 coming apart or being twisted and cut, and a good connection can be achieved.

However, such conventional lead wire connection terminals use a large number of parts and have a complicated structure, which makes the assembly process complicated and increases the cost.

Problems to be Solved by the Invention Therefore, the lead wire connection terminal of this invention solves these inconveniences in conventional lead wire connection terminals, simplifies the structure of each component, and
By using a minimum number of parts, including a lead wire presser that only performs sliding motion, the lead wire inserted into the insertion hole of the terminal part can be kept in good condition without coming apart, twisting, or tearing. The purpose is to make connections quick and easy, and to reduce costs.

Means for Solving the Problems In this invention, a rotary knob 12 has a threaded portion 13 fixed to a central axis, which has a groove 13A formed in the circumferential direction near the tip, and an inner threaded groove 13A formed in the circumferential direction. Threaded part 1 of rotary knob 12
3 and whose outer periphery is fitted into a notch 15B of the terminal portion 15 described later, and a fitting portion 17F formed above is fitted into the groove 13A of the thread groove 13 of the rotary knob 12. a lead wire pressing body 17 which is held below the square nut 16 and presses the lead wire with its lower surface; and a notch 1 which is bent upward and into which the square nut 16 is engaged.
5B, a lead wire insertion hole 15A is provided below the bent portion 15, and the bent portion 15 is formed to cover two sides of the lead wire pressing body 17.
A terminal portion 15 having a lead piece 15C bent downward and a fixed piece 15D; A lead wire insertion hole 14A is formed at a position corresponding to the lead wire insertion hole 15A, and a lead wire insertion hole 14A is formed in the longitudinal direction,
Lead piece 15C and fixed piece 15D of the terminal portion 15
a terminal block 14 having an insertion hole 14B into which a lead piece 15C of the terminal part 15 and a fixing piece 15D are inserted, and holding the fixing piece 15D by caulking or the like when the lead piece 15C of the terminal part 15 and the fixing piece 15D are inserted; Due to the screw feeding action of the square nut 16 caused by the rotation of the rotary knob 12, the lead wire pressing body 1 is positioned below the square nut 16.
7 is slid in the longitudinal direction.

Embodiment Next, an embodiment of the lead wire connection terminal of this invention will be described in detail with reference to the drawings.

FIG. 2 is an exploded front view showing an embodiment of the lead wire connection terminal of this invention, and is shown in a partially sectional view. In the drawing, 12 is a rotary knob made of an insulating material, 13 is a screw portion fixed to the rotary knob 12, 13A is a groove thereof, 14 is a terminal block made of an insulating material, and 14A is a screw portion fixed to the rotary knob 12. The lead wire insertion hole 14B is the lead piece 15 of the terminal portion 15.
C and the insertion hole for the fixing piece 15D, 14Y is the storage groove for the square nut 16, 14Z is the storage groove for the bent portions 15Z and 15Z' of the terminal portion 15, and 15 is the conductive terminal fixed to the terminal block 14 by caulking, etc. 15Z and 15Z' are the bent parts, 15A is the lead wire insertion hole, 15B is the notch part, 15C is the lead piece, 15
D is a fixing piece, 16 is a square nut, and 17 is a lead wire pressing body.

In the lead wire connection terminal of this invention shown in FIG.
2, a terminal part 15 having an insertion hole into which a lead wire is inserted, a terminal block 14 to which this terminal part 15 is fixed by caulking, etc., a square nut 16, and a lead wire pressing body 17, a total of five parts. It consists only of

The following Figs. 3 1 to 4 are structural diagrams showing in detail an example of the lead wire pressing body 17 used in the lead wire connecting terminal of this invention, 1 is a top view, and 2 is a front view from below of 1. Figure 3 is a side view of 1 seen from the right side, 4
1 is a bottom view showing the back side of FIG. In the drawing,
17A is the pressing surface of the lead wire, 17B and 17C
17D and 17E are opposing edges formed at the tips of the rising portions 17B and 17C, respectively, and the groove 13 of the threaded portion 13 is located approximately at the center of the rising portions 17D and 17E.
The opposing edge 17F is formed by the opposing edges 17D and 17E, and is provided with a notch shaped like a part of the circumference of a circle having a diameter slightly larger than the diameter of A. 13A is shown.

FIG. 4 is a side view showing the assembled state of the lead wire connection terminal of this invention except for the terminal block 14. Reference numerals in the drawings are the same as in FIG. 2.

To explain the work process for assembling the lead wire connection terminal of this invention, first, the corners of the square nut 16 are fitted into the notches 15B of the terminal part 15, and both are temporarily assembled, and then, This square nut 16 and the terminal part 15 are integrated, and the square nut 1
6 into the threaded portion 13 of the rotary knob 12, and then insert the lead wire from the right direction in FIG. The pressing body 17 is press-fitted.

In this state, the two bent parts 15Z and 15Z', in which the notch 15B and the insertion hole 15A of the terminal part 15 are formed, are simply bent. Press-fitting is easy.

The lead wire pressing body 17 has a shape as shown in FIGS. 3 1 to 4, and its opposing edges 17D and 17
The fitting part 17F formed with the rotary knob 1
It fits into the groove 13A of the threaded part 13 fixed to the screw part 2, but it is configured so that it can be attached in a so-called "kari-mawari" state. The state after such assembly is shown in a side view in FIG.

The following Figs. 5 1 to 4 are structural diagrams showing in detail an example of the terminal block 14 constituting the lead wire connection terminal of this invention, in which 1 is a top view, 2 is a side view, and 3 is a -
Line sectional view, 4 shows a bottom view. Reference numerals in the drawings are the same as in FIG. 2.

After assembling as shown in FIG. 4 above, insert the lead piece 15C and fixing piece 15D of the terminal part 15 into the insertion hole 14B of the terminal block 14, and crimping the fixing piece 15D at the lower position. Twist and secure.

Through such assembly work, each part constituting the lead wire connection terminal is fixed integrally.

When this final assembly is completed, the terminal section 1
Since the two bent portions 15Z and 15Z' of 5 are pinched from the outside by the terminal block 14, each assembled component is firmly fixed in a predetermined position.

In this way, the lead wire connection terminal of this invention is
The number of parts is extremely small compared to conventional lead wire connection terminals, and the assembly process is also extremely simple.

The following FIG. 6 is a front view, partially in cross section, showing the lead wire connection terminal of this invention assembled from the parts shown in FIGS. 2 to 5. Reference numerals in the drawings are the same as in FIG. 2.

FIG. 6 shows a state in which the rotary knob 12 is tightened and the lead wire pressing body 17 is in close contact with the bottom surface of the terminal portion 15.

7 and 8 are side sectional views for explaining the operating state of the lead wire connection terminal of this invention.
The figure shows the state in which the rotary knob is tightened, and FIG. 8 shows the state in which the lead wire is inserted. The reference numerals in the drawings are the same as in FIGS. 2 and 3, and 11 indicates the same lead wire as in FIG. 1.

7 and 8 show the left side from the center line of FIG. 6, and the lead piece 15C is not visible.

As is clear from these FIGS. 7 and 8 and the previous FIG. It is covered by the two bent parts 15Z and 15Z' of the terminal part 15, and also has a fitting part 17F for fitting into the groove part 13A of the screw part 13 fixed to the rotary knob 12.
The opposing edges 17D and 17E forming the threaded portion 13 have a notch portion slightly larger in diameter than the groove portion 13A of the threaded portion 13 at approximately the center thereof, so that a so-called “turning” occurs. As a result, the lead wire pressing body 17 is not subjected to the rotational force caused by the rotation of the rotary knob 12, but is slid upward or downward by the side wall of the groove 13A of the threaded portion 13, and performs only linear movement. It turns out. That is, the structure is such that the rotational force due to rotation of the rotary knob 12 is not applied to the lead wire pressing body 17.

Effects of the invention As described above, the lead wire connection terminal of this invention is
The parts used include a rotary knob 12 to which a threaded part 13 is fixed in advance, a terminal part 15 having an insertion hole into which a lead wire is inserted, and this terminal part 1.
Only five points are required: the terminal block 14 to which the terminal block 5 is fixed by caulking or the like, the square nut 16, and the lead wire pressing body 17, and its configuration is also extremely simple.

The lead wire pressing body 17 is connected to the rotary knob 1.
Since it simply slides without being subjected to the rotational force of 2, the connected lead wires will not come apart, be twisted, or be torn to pieces.

Furthermore, the assembly work process is significantly simplified, resulting in many excellent practical effects such as being advantageous in terms of cost.

[Brief explanation of the drawing]

1 to 3 are configuration diagrams showing an example of a conventional lead wire connection terminal, in which 1 is a partially cutaway front view, 2 is a sectional view taken along the line 1, 3 is a sectional view taken along the line 1,
Fig. 2 is an exploded front view showing an embodiment of the lead wire connecting terminal of this invention, and Figs. 3 1 to 4 show details of an example of the lead wire pressing body used in the lead wire connecting terminal of this invention. In the structural diagrams shown, 1 is a top view, 2 is a front view of 1 seen from below, 3 is a side view of 1 seen from the right, 4 is a bottom view showing the back side of 1, and FIG.
A side view showing the assembled state of each part of the lead wire connection terminal of this invention except for the terminal block, Figures 5 1 to 4
These are structural diagrams showing in detail an example of the terminal block 14 constituting the lead wire connection terminal of this invention, in which 1 is a top view, 2 is a side view, 3 is a sectional view taken along the line 2, 4 is a bottom view, and 4 is a bottom view. Figure 6 is a front view showing the lead wire connection terminal of this invention assembled with the parts shown in Figures 2 to 5, and Figures 7 and 8 show the lead wire connection terminal of this invention. FIG. 7 is a side sectional view for explaining the operating state of the terminal, with FIG. 7 showing a state in which the rotary knob is tightened and FIG. 8 showing a state in which a lead wire is inserted. In the drawing, 1 is a terminal board, 2 is a metal terminal block, 3 is an insulating bushing, 4 is a rotating knob, 5 is a lead wire presser, 6 is a washer, 7 is a square nut, 9 is a compression spring, and 10 is a collar. , 11 is a lead wire to be connected, 12 is a rotating knob, 13 is a rotating knob 12
13A is the threaded part fixed to the groove part, 14
is the terminal block, 14A is its lead wire insertion hole, 14
B is the lead piece 15C and the fixed piece 15D of the terminal part 15.
insertion hole, 14Y is a storage groove for the square nut 16, 1
4Z is a storage groove for the bent portions 15Z and 15Z' of the terminal portion 15, 15 is a terminal portion fixed to the terminal block 14 by caulking, etc., and 15Z and 15Z' are the bent portions,
15A is a lead wire insertion hole, 15B is a notch, 1
5C is a lead piece, 15D is a fixing piece, 16 is a square nut, 17 is a lead wire pressing body, 17A is a pressing surface of the lead wire, 17B and 17C are rising parts,
17D and 17E are rising parts 17B and 1, respectively.
The opposing edge 17F formed at the tip of 7C is a fitting portion that is formed by opposing edges 17D and 17E and fits into the groove 13A of the threaded portion 13.

Claims (1)

[Claims for Utility Model Registration] A rotary knob 12 in which a threaded portion 13 having a groove 13A formed in the circumferential direction near the tip thereof is fixed to a central axis; Threaded part 1
3 and whose outer periphery is fitted into a notch 15B of the terminal portion 15 described later, and a fitting portion 17F formed above is fitted into the groove 13A of the threaded portion 13 of the rotary knob 12. a lead wire pressing body 17 which is held below the square nut 16 and presses the lead wire with its lower surface; and a notch 1 which is bent upward and into which the square nut 16 is engaged.
5B, a lead wire insertion hole 15A is provided below the bent portion 15, and the bent portion 15 is formed to cover two sides of the lead wire pressing body 17.
A terminal portion 15 having a lead piece 15C bent downward and a fixed piece 15D; A lead wire insertion hole 14A is formed at a position corresponding to the lead wire insertion hole 15A, and a lead wire insertion hole 14A is formed in the longitudinal direction,
Lead piece 15C and fixed piece 15D of the terminal portion 15
a terminal block 14 having an insertion hole 14B into which the lead piece 15C of the terminal part 15 and the fixing piece 15D are inserted, and holding the fixing piece 15D by caulking or the like when the lead piece 15C of the terminal part 15 and the fixing piece 15D are inserted; Due to the screw feeding action of the square nut 16 caused by the rotation of the rotary knob 12, the lead wire pressing body 1 is positioned below the square nut 16.
A lead wire connection terminal characterized in that 7 is slidable in the longitudinal direction.