JPH07240318A - Holder for split tubular core - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a holder for a split cylindrical core without a hinge that connects a pair of box-shaped containers together. [Structure] A pair of box-shaped containers for accommodating the core pieces 11 of the split cylindrical cores are not connected by a hinge and are made individually. Box-shaped container 1
A core pressing spring 14 and a core locking piece 13 are provided in the unit 2. Engagement with a protrusion 17 having an L-shaped cross section integrally provided on one of the opposing outer side edges of the peripheral wall corresponding to the one peripheral surface of the core of the box-shaped container 12, and the other with a groove 17 into which the L-shaped protrusion is fitted. Ridge 16
To provide. Locking claws 18 that engage with both ends of the engaging projection 16 are provided at both ends of the L-shaped projection 15. Each of the core pieces 11 is housed in the box-shaped container 12, and an electric wire is passed through the central groove of the core piece.
Insert the ridge 15 into the groove 17 of the engaging ridge 16, and insert the core piece 1
1 is abutted, and the box-shaped container 12 and the core piece 11 are slid to assemble into a tubular shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holder made of an insulating resin for holding a tubular core, which is obtained by penetrating an electric wire such as a power supply line or a signal line, into a tubular shape.

[0002]

2. Description of the Related Art Electromagnetic interference in power lines and signal lines of electronic equipment can be prevented by inserting a wire through a cylindrical ferrite core. However, it is troublesome to pass the wired wire through the tubular core, and it is desirable to select the material and size of the core in a symptomatic manner.Therefore, divide the tubular core into equal parts and make a core piece with a central groove. Then, the core pieces are abutted from both sides of the electric wire and held in a tubular shape. A holder made of insulating resin is used to hold the two core pieces in a tubular shape by penetrating the electric wire.

An example of a conventional holder for a split cylindrical core is shown in FIG. 3 together with the core piece.

The core piece 1 is obtained by dividing an octagonal cylindrical core having an outer periphery into two equal parts such that the back surface (bottom surface in the figure) is a flat surface. A square engagement recess 2 is provided in the center of both edges of the central groove (semicircular cross section) of the core piece 1.

The holder is formed by arranging two box-shaped containers 3 for accommodating the core pieces 1 so that the peripheral walls 4 face each other and connecting them with a hinge 5, and the opening surfaces of the box-shaped containers 3 are butted against each other.
This is a structure in which the engaging piece 6 and the locking piece 7 provided on the outer surface are engaged to form a hollow cylindrical body having a circular window portion in the center of the side wall 8.

A rectangular through hole 9 extending to the bottom portion of the peripheral wall 4 is provided at the lower center of a side wall 8 having a shape corresponding to the end surface of the core piece 1. The acute angle portion of the U-shaped spring plate 10 attached to the core piece 1 is press-fitted into the through hole 9, the spring plate 10 is attached to the box-shaped container 3, and the division surface of the core piece 1 is attached to the box-shaped container. It is stored by protruding slightly from the opening surface of 3. When an electric wire is passed through the central groove of the core piece 1 and the opening surfaces of the box-shaped container 3 are butted against each other to make the holder a hollow cylinder, the split surfaces of the core piece 1 are separated from each other by the spring plate 1.
It is pressed at 0 and comes into pressure contact to form a tubular core.

[0007]

In the conventional holder in which the box-shaped containers are connected with the elbow, since the elbow has a thin wall, there is a drawback that the elbow is cracked while being repeatedly attached to and detached from the electric wire. However, in the mounted state, due to the repulsive force of the spring plate that presses the core piece, the elasticity of the fin gradually decreases, the pressing force of the core piece changes, and the characteristics of the tubular core deteriorate. It is an object of the present invention to provide a hinge free holder.

[0008]

PROBLEM TO BE SOLVED: To solve a problem by separating a pair of box-shaped containers from each other and removing the hinges, and fitting a ridge on the outer peripheral edge of the peripheral wall of the container to each other, and a ridge having a L-shaped cross section. A holder for a split cylindrical core made of an insulating resin material, in which engaging projections having corresponding grooves are provided, and locking claws are provided at both ends of the projections or the engaging projections.

The above-mentioned ridges and engaging ridges are holders for split cylindrical cores made of an insulating resin material, which are shorter than the axial length of the core pieces and are provided at the center of the outer edge of the container.

[0010]

The projecting ridge and the engaging ridge are fitted to each other along the axial direction of the core, and the opening surfaces of the containers are slid together to form the holder as a hollow cylindrical body.

The locking claw engages with the end surface of the ridge or the engaging ridge to keep the ridge and the engaging ridge fitted.

In the case of the protrusion and the engagement protrusion that are shorter than the axial length of the core piece, the core pieces accommodated in the container are slid together before the engagement between the protrusion and the engagement protrusion. It can be carried out.

[0013]

EXAMPLE A first example is shown in FIG. 1 together with the core pieces used.

The core piece 11 has the same structure as that shown in FIG. 3 except that the recess 2 is small.

The holder is a box-shaped container 12 of the same shape and size.
It consists of individual pieces. The box-shaped container 12 with the opening face down is shown to accommodate the core piece 11.

The box-shaped container 12 is provided with a core locking piece 13 at the center of the inner peripheral edge of the semicircular window portion of the side wall 8 (in the figure, both sides are cut out to the bottom of the peripheral wall 4 to form a columnar shape), and the bottom of the peripheral wall 4 is formed. Two core pressing springs 14 each having a U-shaped cutout are provided, a protrusion 15 having an L-shaped cross section is provided on one outer side edge of the peripheral wall 4 along the entire length of the edge, and a protrusion 15 is provided on the other outer edge. Is provided with an engaging projection 16 having a groove 17 having an L-shaped cross section. The free end of the core pressure spring 14 projects slightly into the box 12. Locking claws 18 are provided on both ends of the protrusion 15. The toe of the locking claw 18 slightly projects in the direction of the L-shaped free end (direction toward the bottom of the box-shaped container 12).
The corner of the protrusion 15 on the opposite side of the toe of the locking claw 18 is chamfered so that the locking claw 18 can easily enter the groove 17.

When the core piece 11 is press-fitted into the box-shaped container 12 by slidingly contacting the core locking piece 13 with the end surface of the core piece, the core locking piece 1 is inserted.
3 is engaged with the concave portion 2 to hold the core piece 11 in the box-shaped container 12. The core piece 11 is housed in a state in which the back surface is in contact with the inwardly projecting end of the core pressing spring 14 and the split surface is slightly projected from the opening surface of the box-shaped container 12.

The two box-shaped containers 12 containing the core pieces 11 are made to face each other with their opening faces facing each other, and the ridge 15 and the engaging ridge 16 are arranged.
1 are made to face each other, and an electric wire (not shown) is passed through the central groove of the core piece 11 so as to be arranged so as to be displaced as shown in FIG. 1. First, the protrusion 15 is inserted into the groove 17 of the engaging protrusion 16 of the side wall 8. Fit only the thickness. Since the core piece 11 protruding from the opening surface abuts the side wall 8, both core pieces 11 are attached to the box-shaped container 12
While pushing inward, the protrusion 15 is further inserted into the groove 17 so that the split surfaces of the core piece 11 are elastically contacted by the core pressing spring 14, and then the locking claw 18 contacts the end face of the engaging protrusion 16. The ridge 15 is fitted into the groove 17 until they come into contact with each other.

The two box-shaped containers 12 have a tubular shape with electric wires penetrating therethrough, and the core pieces 11 in the box-shaped container 12 are elastically contacted to form a split tubular core.

When the fitted box-shaped container 12 is separated, the engaging claw 18 is formed in the groove 17 while the end of the engaging projection 16 is deformed by a screwdriver or the like so as to widen the groove 17 of the engaging projection 16. Then, the ridge 15 is pulled out from the groove 17.

FIG. 2 is an exploded perspective view of the second embodiment. It is another structural example of the holder using the core piece 11 shown in FIG. 1, and only in the central part of one outer side edge of the peripheral wall 4 of the box-shaped container 19 (in the figure, the length of the box-shaped container 19 is the outer dimension). About 2 /
(3 length) Providing a ridge 20 having a trapezoidal cross section, and an engaging ridge 2 having a groove 22 corresponding to the ridge 20 at the center of the other outer edge.
1 is provided in the same length as the ridge 20. A box-shaped container 1 is provided with locking claws 23 projecting from the central portions of both ends of the engaging projection 21, and cuts on both sides of the engaging claw 23 in the length direction of the engaging projection 21.
The core locking piece 13 of No. 2 has the same structure.

In the case of the holder shown in FIG. 2, the box-shaped container 1
First, the core piece 11 that abuts on the core pressing spring 14 housed in the box-shaped container 19 and projects from the opening surface is attached.
The split surfaces (not shown in FIG. 2) are butted against each other, and then both box-shaped containers 19 are pressed from the bottom so that the projection 20 is fitted into the groove 22 of the engagement projection 21 while abutting the opening surfaces. The projection 2 is engaged until it is fitted and the engaging claw 23 is engaged with the end surface of the projection 20.
0 is inserted into the groove 22 to finish. Since the box-shaped container 19 can be separated by pulling the four locking claws 23 outward with both fingertips while pulling the locking claws 23 outwardly so that the locking claws 23 can be removed from the projections 20, the holder of FIG. Is easier than in.

The cross-sectional shape of the ridges 15 and 20 is not limited to that of the embodiment, and may be any L- or T-shape that does not come out in the depth direction of the grooves 17 and 22. The structure having the through hole 9 shown in FIG. 3 may be provided, and a U-shaped spring plate 10 may be provided as a core pressing spring.

[0024]

According to the present invention, since there is no thin portion of the hinge portion unlike the conventional holder, it is less susceptible to the deterioration of the strength of the insulating resin material with time, and the stored core pieces are rubbed together to form a cylinder. Since it can be held in shape, deterioration of core characteristics,
There is an effect of preventing a defective butting of the core pieces, and in the case of a combination of a shorter ridge and an engaging ridge, there is an effect that handling is extremely easy.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention together with a split cylindrical core.

FIG. 2 is an exploded perspective view showing another embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a conventional example together with a core piece.

[Explanation of symbols]

 1,11 Core 2 Engagement recess 3,12,19 Box-shaped container 4 Circumferential wall 5 Hinge 6 Engagement piece 7 Engagement piece 8 Side wall 9 Through hole 10 Spring plate 13 Core engaging piece 14 Core pressing spring 15,20 Projection Articles 16,21 Engaging projections 17,22 Grooves 18,23 Locking claws

Claims (2)

[Claims] 1. A holder made of an insulating resin material, which comprises a pair of box-shaped containers for accommodating and abutting split core pieces and inserting an electric wire into a central hole of the split tubular core to hold the core in a tubular shape. A core pressing spring is provided in the box-shaped container, and a ridge having an L- or T-shaped cross-section and a groove corresponding to the ridge, which are fitted to each other along the axial direction of the core, on the outer peripheral edge of the box-shaped container. A holder for a split cylindrical core, which is provided with an engaging ridge having, and locking claws provided at both ends of the ridge or the engaging ridge. 2. The split cylinder according to claim 1, wherein the protrusions and the engaging protrusions have a length shorter than the axial length of the core piece and are provided at the center of the outer edge of the box-shaped container. Shaped core holder.