JP2507749Y2 - Electronic noise suppressor - Google Patents

Description

[Detailed Description of Device] a. Purpose of the Invention [Industrial field of application] The present invention uses a split-type tubular core that prevents noise by penetrating a signal line that connects electronic devices and a split-type tubular core holder that holds the split-type tubular core. The electronic noise prevention device is characterized by a structure of a split type cylindrical core holder.

[Conventional technology]

A conventional holder for a split-type tubular core, in which a split-type tubular core obtained by combining two core pieces each having a groove hole having a semicircular cross-section on one surface is inserted into a signal line connecting electronic devices As shown in the side view of FIG. 4, the holder (hereinafter referred to as “holder”) has a structure in which the dividing surface is open, and accommodates the core piece 8 with the slot facing the opening surface. A pair of box-shaped containers 1 each made of an insulating resin having substantially the same shape, each having a space surrounded by a peripheral wall 10 corresponding to the outer periphery of the peripheral wall and side walls 4 facing each other on one side of the peripheral wall 10 Engagement pieces 3 which are connected to each other at the edges by hinge pieces 2 to be integrated with each other, and which engage with each other on the outer surface of the peripheral wall 10 on the side opposite to the hinge pieces 2.
And a locking claw (not shown) are provided, a semicircular window portion 5 corresponding to the semicircular groove hole of the core piece 8 is formed at the opening edge of the side wall 4, and a window is formed on the inner peripheral surface of the window portion 5. A plurality of hard projecting pieces 6 having the same thickness as the side wall 4 are integrally provided to project toward the center of the part 5, and a spring piece 7 partially projecting inward is integrally provided on the bottom of the box-shaped container 1. It was the structure provided in the.

The core piece 8 is housed in each box-shaped container 1, and the signal wire 9 is passed through the groove hole to engage the engaging piece 3 of the holder with the locking claw, thereby pressing the core piece 8 with the spring piece 7. Then, at the same time as the split type tubular core which penetrates the signal line 9 (hereinafter referred to as a tubular core), the protruding piece 6 is engaged with the insulating coating of the signal line 9 to form a tubular shape at a desired position of the signal line 9. The core was fixed.

[Problems to be solved by the device]

As shown in FIG. 4, the conventional holder has a hard protrusion 6
Since it can be applied only to the signal line 9 having an outer diameter in a narrow range, there is a problem that a large number of types of holders corresponding to the type of the thickness of the signal line 9 and the type of the outer size of the core piece 8 are required. was there. Further, since the protruding piece 6 is engaged with the insulating coating of the signal line 9, there is a problem that the insulating coating of the signal line 9 is damaged.

The present invention is intended to solve this problem and provide an electronic noise prevention device using a holder that can be applied to a signal line having a diameter within a predetermined range with one type of holder. Further, the present invention aims to provide an electronic noise prevention device using a holder that does not damage the insulating coating of the signal line.

B. DISCLOSURE OF THE INVENTION [Means for Solving the Problems] In the present invention, a split type cylindrical core formed by combining a pair of core pieces having a groove hole having a semicircular cross section on one surface and the core piece are respectively housed. And a pair of box-shaped containers having a space consisting of a peripheral wall other than the surface of the core piece other than the grooved surface and two side walls surrounding the surface of the core piece in which the semicircular portion of the grooved portion appears. Each of the box-shaped containers has a mechanism for interlocking the box-shaped containers such that the pair of core pieces can be accommodated and the surfaces having the groove holes can be held together, and a spring piece on the inner bottom portion of the peripheral wall. In the electronic noise suppression device comprising a holder for a split type tubular core, in which a semicircular window portion corresponding to the groove hole of the core piece is provided on the side wall, the window is formed on the inner peripheral surface of the window portion of the side wall. Fold in the direction of the slot of the stored core piece that extends toward the center of the part Electronic noise prevention device characterized by comprising integrally provided on a plurality of flexible plate which can be bent.

[Action]

By flexing the flexible plate toward the inside of the box-shaped container and penetrating the signal line, the flexible plate elastically holds the signal line in pressure contact. That is, for a thick signal line that is slightly thinner than the diameter of the window portion of the side wall, the flexible plate bends inward greatly and presses the signal line, and for a thin signal line, the flexibility that opposes The flexible plate bends slightly inward up to the signal line slightly thicker than the space made by the plate and presses against it at the tip to prevent movement of the tubular core in the longitudinal and radial directions of the signal line and fix it. . Further, since the flexible plate bends into the groove hole and presses the signal line, the flexible plate is restricted by the groove of the cylindrical core, so that it does not spread even if it is not restrained by a band or the like. Moreover, since the flexible plate flexibly responds to the diameter of the signal line and presses the signal line against the surface of the flexible plate, the insulating coating of the signal line is not damaged.

〔Example〕

FIG. 1 is an external perspective view showing a holder according to an embodiment of the present invention together with a core piece.

The core piece 8 is a polygonal ferrite core which has a groove hole 15 having a semicircular cross section on one surface, and a peripheral surface of which is a tube having an octagonal cross section and equally divided into two along the axis.

The holder is made of an insulating resin material, and a pair of two box-shaped containers 1 having substantially the same shape (the left side in FIG. 1 is slightly shallower than the right side) are provided at one opening edge. It is connected with a hinge piece 2.

The box-shaped container 1 comprises a peripheral wall 10 corresponding to the peripheral surface of the core piece 8 and side walls 4 facing each other on both sides thereof, and has a space 16 for accommodating the core piece 8, and a peripheral wall opposite to the hinge piece 2. Ten
An engaging piece 3 and an engaging claw each having an engaging hole formed on the outer surface of the
Have 11.

On the side wall 4 of the box-shaped container 1, a semicircular window portion 5 corresponding to the semicircular slot 15 of the core piece 8 is formed, and on the inner surface of the side wall 4,
A small protrusion 12 that suppresses the side surface of the core piece 8 is provided near the center of the window 2.

On the inner bottom 17 of the box-shaped container 1, two cantilever spring pieces 7 (only one is shown) are formed by U-shaped cuts. One of the spring pieces 7 protrudes inward and is elastically contacted with the peripheral surface of the core piece 8 housed in the box-shaped container 1 to close the pair of box-shaped containers 1 with each other. Is urged in the direction of combined pressure contact.

The inner peripheral surface of the window 5 is flush with the outer surface of the side wall 4,
Three strip-shaped flexible plates 13 extending obliquely toward the center of the circle of the window 5 and inward of the box-shaped container 1 are integrally provided at equal angular intervals. There is. Flexible plate 13
The free end of the side wall does not project inward from the inner surface of the side wall 4. The flexible plate 13 is continuous from the outer side surface 18 of the side wall 4 of the window portion 5, extends obliquely inward in the direction toward the center of the circle by a thickness, and is thinner than the thickness and has a semicircular window portion. 5 is provided with a step, the thickness is sufficiently smaller than the thickness dimension of the side wall 4, and the inclination is within the range of the thickness dimension of the side wall 4, and they are close to each other at their free ends. .

FIG. 2 is a vertical sectional front view for explaining a usage state of the holder shown in FIG.

Each of the core pieces 8 is housed in the box-shaped container 1, and the signal line 9 is hooked on the free end surface of the flexible plate 13 of the one box-shaped container 1 at a predetermined position of the signal line 9 where the tubular core is to be provided. Place it, cover the other box-shaped container 1 and close it, and press to engage the engaging piece 3
And the locking claw 11 (not shown in FIG. 2, see FIG. 1) are engaged. The core piece 8 is urged by the spring piece 7 to surely unite into a tubular core, and the signal wire 9 is inserted into the central hole formed by the groove hole and pressed by the signal wire 9 to form the window portion. As shown in FIG. 2, all of the upper and lower six flexible plates 13 provided in 5 are bent toward the inside of the box-shaped container 1, and the signal line 9 is elastically attached to the center of the central hole of the tubular core. Holds by pressure. Therefore, the flexible plate 13 fixes the cylindrical core and the holder to the required positions of the signal line 9 so as not to move in any direction.

FIG. 3 is an external view of an essential part of another embodiment of the present invention.
In the embodiment shown in FIG. 1, instead of the flexible plate 13 of the window portion 5, a holder provided with a flexible plate 14 having a different shape is used as a whole of the one box-shaped container 1 and a part of the other. Is shown. The point that the pair of box-shaped containers 1 each have a locking claw 11 and an engagement piece 3 (not shown in FIG. 3, see FIG. 1) on the peripheral wall 10 and are connected to each other by a hinge piece 2. It is the same as in FIG.

The flexible plate 14 is a tapered inward curved plate, and the side wall 4
The thickness is sufficiently smaller than the thickness of the side wall 4, and the shape is a trough shape with a curved width almost the same as the thickness of the side wall 4 and a shallow depth, and three pieces are integrally provided on the inner peripheral surface of the window portion 5. There is. The three flexible plates 14 of this shape have the center line of the outer curved surface in the same plane as the outer surface of the side wall 4, extend narrowing in width toward the center of the window 5, and have substantially equal angles. It is provided at equal intervals.
Since the flexible plate 14 is formed as described above, the free end of the flexible plate 14 is easily bent toward the inner surface of the side wall 4 and is difficult to be bent toward the outer surface thereof.
Therefore, as described with reference to FIG. 2, in the use state in which the signal line is penetrated through the central hole of the cylindrical core housed in the holder, all of the flexible plate 14 bends inside the box-shaped container 1. , The signal line 9 is elastically pressed and held.

In the holder of the present invention shown in FIGS. 1 and 3, the flexible plates 13 and 14 are largely bent inward for the thick signal line which is slightly thinner than the diameter of the window portion 5 so that the signal line is not bent. The flexible plates 13 and 14 that hold the pressure contact and oppose to thin signal lines
The flexible plates 13 and 14 bend slightly inward to hold the signal lines slightly thicker than the interval created by the tips, and hold them in pressure contact with the tips to prevent the signal lines from moving in the longitudinal and radial directions. To do. Thus, the range of the diameter of the signal line that can be fixed with one type of holder is expanded.

In addition, in the holder of the present invention, the flexible plates 13 and 14 flexibly correspond to the diameter of the signal line and bend and press-contact, so that the insulating coating of the signal line is not damaged.

C. Effect of the Invention [Effect of the Invention] As described above, according to the present invention, the applicable range of the diameter of the signal line to be pressure-contacted and fixed is wide and economical, and the excellent insulating coating of the signal line is not damaged. It is possible to provide an electronic noise prevention device using a split type tubular core holder.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a holder according to an embodiment of the present invention together with a core piece. FIG. 2 is a vertical sectional front view showing a state where the holder of FIG. 1 is used. FIG. 3 is an external perspective view of a main part of a holder showing another embodiment of the present invention. FIG. 4 is a side view showing a conventional holder. 1 ... Box-shaped container, 2 ... Hinge piece, 3 ... Engagement piece, 4 ... Side wall, 5
... window portion, 6 ... projecting piece, 7 ... spring piece, 8 ... core piece, 9 ... signal line, 10 ... peripheral wall, 11 ... locking claw, 12 ... small projection, 13, 14 ... flexible plate, 15 ... Slot, 16 ... space, 17 ... inner bottom, 18 ... outer peripheral surface, 19
… Inner surface.

Claims (1)

(57) [Scope of utility model registration request] 1. A split-type tubular core formed by combining a pair of core pieces each having a groove hole having a semicircular cross section on one surface, and a surface other than the surface having the groove hole of the core piece for accommodating the core piece, respectively. And a pair of box-shaped containers having a space formed of a peripheral wall surrounding the core piece and two side walls surrounding the surface where the semicircular portion of the slot of the core piece appears, and the pair of box-shaped containers respectively include the pair of cores. A mechanism for interlocking box-shaped containers capable of accommodating and holding one side having the groove hole and holding a spring piece at the inner bottom of the peripheral wall, and the side wall has a groove hole for the core piece. In an electronic noise prevention device comprising a split type cylindrical core holder provided with a semi-circular window part corresponding to the above, in the inner peripheral surface of the window part of the side wall, the stored core piece extending toward the center of the window part Multiple flexible plates that can be bent in the direction of the slot Electronic noise prevention device characterized by comprising providing the body.