JPH0353779Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> Normally, when electronic equipment receives disturbance noise, it often occurs at the interface between systems or between devices; , electrostatic induction, electromagnetic coupling,
It is recognized that noise transmission paths exist due to parasitic constants not shown in the wiring diagram, such as common impedance coupling.

As a measure against this noise, it is said that it is better to use twisted wires than to use them in parallel, and that it is more effective to use twisted wires with a large number of twists.

The present invention relates to a wire holder used in a wire twisting machine that twists a plurality of wires together to prevent noise.

<Prior Art> Conventionally, as described above, devices for twisting electric wires together to prevent noise have been manufactured, sold, and used by general electrical equipment manufacturers.

However, most conventional electric wire twisting machines of this type were large machines that twisted together hundreds of meters of long electric wire wound on a drum.

<Problem that the invention seeks to solve> However, electronic devices use a large number of electric wires, and each wire is coded in various colors to avoid mixing and erroneous connections, and to make connections easier and faster. It is customary to use

Conventional large electric wire twisting machines twist long electric wires together, so in order to use twisted electric wires with various color codes and color combinations for the above-mentioned electronic devices, it is necessary to twist electric wires with different numbers of twists and wires. In order to freely use wires of different diameters and large and small wire diameters, a huge amount of twisted wires had to be kept on hand.

In order to eliminate these drawbacks, the present invention allows any wires suitable for use to be used by easily twisting them together as needed, and the number of twists can be adjusted arbitrarily depending on the wire diameter and the location of use. To provide an electric wire holder which is used in a small-sized electric wire twisting machine which can be easily and easily set up, and which can simply and easily hold the ends of electric wires.

<Means for Solving the Problems> The present invention relates to an electric wire holder for an electric wire twisting machine that can reliably achieve the above-mentioned object, and the configuration thereof is as follows. To explain using a figure, the electric wire holder for the electric wire twisting machine according to the present invention includes a rotating shaft 2 connected to a motor M via a reduction gear 1, and a rotation speed at which the rotation speed of the rotating shaft 2 is set in advance. This wire holder is fixed to the rotating shaft 2 of a wire twisting machine having a setting device 3 and used to hold the ends of a plurality of wires K to be twisted, and has the rotating shaft 2 on the rear end side 42. It has a hole 43 for attachment to the shaft 2, a flange portion 44 protruding outward in the longitudinally intermediate portion, and cutout recesses 45 at multiple locations in the circumferential direction of the flange portion 44.
A short rod-shaped central shaft 4 having a front end 51 is located on the front end 41 of the central shaft 4, the intermediate portion is inserted into the notch recess 45, and the central shaft 4 is inserted into the notch recess 45. A plurality of levers 5 are pivotally supported by pivot pins 6, and the rear end sides 52 of each of these levers 5 are pressed toward the outer circumferential direction, and the front end sides 51 are placed on the central shaft 4. It has a structure consisting of a spring 7 interposed so as to press against the center shaft 4 and the lever 5, and an electric wire clamp a formed at the pressure contact portion between the central shaft 4 and the lever 5.

<Function> When using the wire holder for the wire twisting machine configured as described above, the rear end side 52 of the lever 5 is pressed and the front end side 51 of the lever 5 is pulled away from the outer peripheral surface of the central shaft 4. , as shown in Figures 4 and 5, the electric wire K...
The vicinity of one end is held by the wire clamping part a of the wire holder A, and the other end of the wire K is held by hand,
The electric wire holder A is rotated to twist a plurality of electric wires together. When twisting this wire, the length of the wire,
If the desired total number of twists is set by operating the rotation speed setting device 4 before the twisting operation, taking into account the thickness, the number of twists between a predetermined length, etc., the wire holder A will adjust the set rotation speed. The stranded electric wire K' is rotated by 100 degrees, and the twisted electric wire K' having the required set number of twists is obtained.

<Examples> Examples of the present invention will be described below with reference to the drawings.

The electric wires referred to in this invention include vinyl-covered electric wires, coated electric wires, enamel-covered electric wires, etc.
Any wire that is covered and used by being twisted together may be used. Further, the covered wire may be a collection of fine wires or a single wire. Furthermore, the twisting is not limited to only electric wires of the same type and diameter, but may also be a twisting of electric wires of different types and different diameters, such as a combination of a collective electric wire and a single wire, a large-diameter electric wire and a small-diameter electric wire, etc.

The embodiment shown in FIGS. 1 to 5 is an embodiment of the present invention, and the wire twisting machine main body B includes a forward/reverse motor M, a speed reducer 1, and an electromagnetic clutch in a box-shaped housing 12. A rotating shaft 2 is formed protruding from the center of a front plate 13 of a housing 12, and an electric wire holder A is fixed to the rotating shaft 2. Ru. As shown enlarged in FIGS. 2 and 3, the electric wire holder A has cutout recesses 45 for fitting the lever 5 around the longitudinally intermediate portion of the central shaft 4 at four equal intervals in the circumferential direction. The protruding flange portion 44 formed by
and wire guide concave grooves 4 formed along the axial direction at four locations in the circumferential direction on the front end side 41 (right side in the figure).
6... and a hole 43 for fitting into the rotating shaft 2 recessed in the shaft core on the rear end side 42 (left side in the figure), and each of the cutout recesses 45...
The front end side 51 is located in the wire guide concave groove 32 to form the wire holding part a, and the rear end side 52 is always held by the coil spring 7 loosely fitted around the fixing bolt/spring guide groove 70. The four levers 5 pushed outward are each supported by a pivot pin 6.

On the left side of the front plate 13 of the wire twisting machine main body B, a rotation speed setting device 3 and a rotation shaft 2 are horizontally provided with a four (four digits) number board 31 that can be rotated from the front side. A rotation speed display section 14 for displaying the actual rotation speed of the engine is formed on the right side.
5. A forward/reverse changeover switch 16, an automatic/non-automatic stop changeover switch 17, a power indicator lamp 18, and a forward/reverse rotation direction indicator lamp 19 are provided, and a cord 20 is extended from one end of the housing 12 to provide a hood for rotating operation. A switch 10 is connected.

The outline of using the electric wire holder A for the electric wire twisting machine having such a structure is as described in the section of the operation above, but in order to use the electric wire twisting machine B of this embodiment, first turn on the power switch 15. is turned on, the direction of rotation of the rotary shaft 2 is determined by the forward/reverse changeover switch 16, and automatic stop or no automatic stop is selected by the automatic/non-automatic stop changeover switch 17. When stopping automatically, set the required number of rotations by rotating the number board 31, press the rear end side of each lever 5 of the wire holder A, and insert the wire K into the wire clamping part a. . . . by pinching near one end, holding near the other end with one hand, and stepping on the hood switch 10 with one's foot to operate the rotation. By operating in this way, the motor M rotates, the rotating shaft 2 rotates via the reduction gear device 1, the number of rotations is displayed every moment on the number of rotations display section 14, and the rotating shaft 2 rotates a predetermined amount. When the power is
OFF, the motor M automatically stops, and at the same time, the electromagnetic clutch brakes, the brake 11 works, the rotating shaft 2 suddenly stops, the electric wire K... is twisted the required number of times, and the twisted electric wire K' is obtained. If you do not want it to stop automatically, press the automatic/non-automatic changeover switch 17.
By setting the hood switch 10 to the non-automatic side and depressing the hood switch 10, the motor M
rotates, and the rotating shaft 2 rotates. While looking at the rotation display on the rotation speed display section 14, the operator
The stranded wire K' can be obtained by operating the hood switch 10 while checking the degree of twisting.

As another embodiment, the wire holder A for a wire twisting machine according to the present invention may be implemented as follows.

The means for pressing the lever 5 may be implemented using a structure using a leaf spring 7 as shown in FIG. 6, or may be implemented using a structure using a scissor-shaped spring 72 as shown in FIG. Any structure may be used as long as the end portion of the electric wire K can be securely held by the wire holding portion a.

Further, the number of levers 5 is not limited to the four shown in the above embodiment, but it is sufficient to have at least two levers, and the present invention can be implemented with three, five, or six levers.

In addition, the wire holder A for the wire twisting machine according to the present invention
In addition to the structure shown in the above embodiment, the structure of the wire twisting machine main body B to which the wire twisting machine body B is used may be the following structure.

The rotation speed setting device 3 may be formed of a three-digit or five-digit number board 31.

The rotation speed setting device 3 has a number board for setting the number of twists for a predetermined unit length, such as the number of twists for 1 inch or 100 mm, and a number board for inputting and setting the length of the electric wire to be twisted. It is also possible to provide a twist of the number of twists to the electric wire.

The rotation speed setting device 3 may be a setting device including a push button and a digital numeric display panel, such as a calculator or a push button type telephone.

Instead of a forward/reverse rotation motor, the motor M may be a one-way rotation motor, and forward/reverse rotation may be performed using a forward/reverse switching clutch. Alternatively, the structure may be such that twisting is performed only in one direction.

Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments. It can be implemented with appropriate modification within the scope of achieving the following effects.

<Effects of the invention> As is clear from the above explanation, the wire holder for the wire twisting machine according to the present invention has its wire clamping portions controlled by independently swinging levers arranged around the central axis. Since the necessary wires to be twisted can be inserted and held individually, the wires can be held in and removed from the wire holder extremely reliably and easily. This has an extremely useful and practical effect in that different electric wires can be freely selected on the spot, held, and twisted.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an embodiment of the device of the present invention, Fig. 2 is a partially longitudinal sectional side view of the same main part, Fig. 3 is a perspective view of an embodiment of the wire holder, Figs. Fifth
The figures are a partial vertical cross-sectional view of an embodiment of the device of the present invention and a diagram showing its usage state, and FIGS. 6 and 7 are enlarged views of essential parts showing different embodiments of the spring locking structure. In the figure, 1 is a reduction gear, 2 is a rotating shaft, 3 is a rotation speed setting device, 4 is a central shaft, 5 is a lever, 6 is a pivot pin, 7 is a spring, 41 and 51 are front end sides, 4
2 and 52 are rear end sides, 43 is a mounting hole, 44 is a flange, 45 is a notched recess, A is a wire holder,
A indicates a wire holding part, K indicates an electrical wire, and M indicates a motor.

Claims (1)

[Claims for Utility Model Registration] The rotation of an electric wire twisting machine having a rotating shaft 2 connected to a motor M via a speed reduction device 1, and a rotation speed setting device 3 for presetting the rotation speed of the rotating shaft 2. A plurality of twisted wires K fixed to the shaft 2
An electric wire holder used to hold the end of a wire, which has a hole 43 for fitting into the rotating shaft 2 on the rear end side 42, and protrudes outward in the middle part in the longitudinal direction. A short bar-shaped central shaft 4 having a flange portion 44 and having notched recesses 45 at multiple locations in the circumferential direction of the flange portion 44, and a front end side 51 located on the front end side 41 of the central shaft 4; A plurality of levers 5 whose portions are inserted into the notch recess 45 and are pivotally supported within the notch recess 45 by pivot pins 6, and each of these levers 5. Press the rear end side 52 toward the outer circumference and press the front end side 5
An electric wire for an electric wire twisting machine has a structure consisting of a spring 7 interposed so as to press the central shaft 4 and the lever 5 into pressure contact with each other, and a wire clamping part a formed at the press contact part between the central shaft 4 and the lever 5. Retainer. An electric wire holder for an electric wire twisting machine according to claim 1, wherein a concave groove 46 for guiding electric wires along the axial direction is formed on the central shaft 4 on which the lever 5 comes into contact. An electric wire holder for an electric wire twisting machine according to claim 1, wherein two levers 5 are provided around the central shaft 4. An electric wire holder for an electric wire twisting machine according to claim 1, wherein four levers 5 are provided around the central shaft 4. An electric wire holder for an electric wire twisting machine according to claim 1, wherein six levers 5 are provided around the central shaft 4. An electric wire holder for an electric wire twisting machine according to claim 1, wherein the spring 7 is a coil spring. An electric wire holder for an electric wire twisting machine according to claim 1, wherein the spring 7 is a plate spring. An electric wire holder for an electric wire twisting machine according to claim 1, wherein the spring 7 is a scissor-shaped spring.