JPH082974Y2 - Tubular core holder - Google Patents

Description

[Detailed Description of Device] a. OBJECT OF THE INVENTION [Industrial field of application] The present invention relates to a structure of a split side cylindrical core holder for preventing electromagnetic noise.

[Conventional technology]

In order to prevent electromagnetic induction noise in a signal line connecting electronic devices to each other, the signal line is used by penetrating a cylindrical core. When attaching a tubular core to an existing signal line, use a split-type tubular core consisting of two split cores having a groove with a semicircular cross section at the center, and insert the signal line through the semicircular groove. Two split cores are used in combination. As shown in FIG. 5, the conventional insulating resin holder of the split type tubular core has two resin-made cases 1 made of an electrically insulating material for accommodating the divided tubular cores at their opening edges. The thin hinge piece 2 is integrally connected, and an engaging piece and a locking claw (not shown) that engage with each other are provided on the outer surface of the side wall opposite to the hinge piece 2, and at the opening edge of the other opposing side wall 4. The structure was such that a semicircular window portion 5 corresponding to the groove of the split core was formed. By accommodating the split cores in the case 1, passing the signal wire through the groove of the split cores, and engaging the engaging pieces 3 with the locking claws,
The split cores are butted against each other and held by the tubular core, and at the same time, the projecting piece 6 provided on the inner periphery of the window portion 5 is pressed against the surface of the signal line to fix the tubular core to the signal line.

[Problems to be solved by the device]

In the above-mentioned tubular core holder, the thin hinge piece 2 may be cracked during use in winter, and the hinge piece of the tubular core holder installed on the signal line may be cracked due to the cold weather. There was a problem.

B. Configuration of the Invention [Means for Solving the Problems] The present invention has two cylindrical core holders of the same shape and size, each of which covers and abuts two split cores without using a thin hinge piece integrally molded with the cylindrical core holder. The configuration is made up of individual insulating resin cases. In the case that constitutes the tubular core holder, semicircular windows are provided on both sides corresponding to the grooves on the end surface of the split core, and on the other side, an assembly arm having a hinge shaft is projected to face each other. An elastic bearing portion is provided on the side surface so as to engage with the assembly arm. A V-shaped vertical groove for guiding the hinge shaft is formed in the elastic bearing portion, and the assembly arms and the elastic bearing portion, which are attached to the respective cases so as to face each other, are combined to engage the two cases.

[Action]

The assembly arms and elastic bearings of the two cases hold the split cores in a tubular shape by engaging the two sets at the same time or one set at a time. A cylindrical core holder having a hinge structure is obtained by engaging only one set of the assembly arm and the elastic bearing portion.

〔Example〕

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

The case 7 is made of an insulating resin material having high elasticity.
The split core 8 has a semicircular groove 9 in the center, and has a cross-sectional outer shape that bisects an octagon. A semi-circular window portion 11 is formed on a side wall 10 of the case 7 having a semi-octagonal shape.
The small protrusions 12 on the inner surface of the opposite side wall 10 are for locking the split core 8. On the bottom of the case 7, a cantilevered spring piece 13 (one of the two is shown) is formed by a U-shaped cut. A part of the spring piece 13 projects inside the case, and
It makes elastic contact with the bottom surface of and urges it in the butting direction. Spring piece 13
Instead of this, an elastic body such as a rubber plate may be interposed.

An assembly arm 15 is projectingly provided at the center of the outer surface of the other side wall 14 of the case 7. The assembly arm 15 projects slightly from the upper end surface of the side wall 14 and has a hinge shaft 16 parallel to the side wall 14 at its tip.
It has. The tip end surface of the assembly arm 15 is in contact with the hinge shaft 16 and is inclined toward the outside (for example, a slope 30
Degree).

An elastic bearing portion 18 is projectingly provided at the center of the outer surface of the side wall 17 opposite to the side wall 14. The elastic bearing portion 18 shown enlarged in FIG. 2 comprises two vertical thick plates provided at intervals of the width dimension of the assembly arm 15. Hinged shaft of assembly arm 15 at the bottom of the plank
A through hole bearing hole 19 corresponding to 16 is formed, and a V-shaped vertical groove 20 is formed from the upper surface to the inner surface of the thick plate.
The vertical groove 20 communicates with the bearing hole 19 and is deep at the top, changes in depth midway, and becomes shallow at the bottom. The bottom of the vertical groove 20 constitutes a cantilever spring member by a V-shaped cut 21 formed along the side wall of the vertical groove 20 from the height where the depth changes to reach the bearing hole 19.

Since the case 7 has such a structure, the two cases 7 housing the split cores 8 face each other as shown in FIG. 3, and the two sets of the assembly arm 15 and the elastic bearing portion 18 are simultaneously engaged. Can be matched. In this case, the hinge shaft 16 advances inside the vertical groove 20 along its upright side wall and outwardly by pressing and bending the bottom portion thereof, and fits into the bearing hole 19. Fourth
The drawing shows an example in which the assembly arm 15 and the elastic bearing portion 18 are engaged one by one. A hinge structure that can be opened until the tip end surface of the assembly arm (15) contacts the side wall (17). The upper case 7 can be put on the lower case 7 and abutted on each other. In this case, the hinge shaft 16 of the remaining assembly arm 15
The inside of 20 is pushed along the inclined side wall, and the bottom part is pushed to be housed in the bearing hole 19. It should be noted that a hard protrusion 6 or an elastic tongue is provided on the inner peripheral surface of the window 5 as shown in FIG.
A fixing means such as a mounting tool may be provided.

C. Effect of the Invention [Effect of the Invention] The cylindrical core holder according to the present invention does not have a thin hinge piece and has a structure in which two cases having the same shape and size are butted against each other. Even in the cold environment in winter, the hinge piece that connects the cases does not crack, the reliability after installation is improved, it can be manufactured at low cost, and the accident on the customer side can be prevented. I can. Also, the tubular core holder of the present invention can be made into a hinge structure, so it is easy to handle and convenient to use.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a cylindrical core holder according to the present invention. FIG. 2 is an external perspective view showing an enlarged main part in FIG. FIG. 3 is a front view illustrating a usage state of the tubular core holder shown in FIG. 1. FIG. 4 is a front view illustrating an example of a usage state of the tubular core holder shown in FIG. 1. FIG. 5 is a front view showing a conventional example. 1,7 ... Case, 2 ... Hinge piece, 3 ... Engaging piece, 4,10 ...
… Opposite side walls, 5,11 …… Window part, 6 …… Projection piece, 8 …… Split core, 9 …… Groove, 12 …… Small protrusion, 13 …… Spring piece, 14,17…
… Side wall, 15… Assembly arm, 16… Hinge shaft, 18… Elastic bearing part, 19… Bearing hole, 20… Vertical groove, 21 cuts.

Claims (1)

[Scope of utility model registration request] 1. A groove (9) having a semicircular cross section at the center thereof.
A side wall formed of two cases (7) made of an insulating resin and having the same shape and dimension covering and abutting each of the split cores (8), the side walls of the case (7) corresponding to the side surfaces of the split cores (8). On the outer surface of (14), an assembly arm (15) having a hinge shaft (16) at its distal end is projected, and the hinge shaft (16) is guided to the outer surface of the side wall (17) facing the side wall (14). A split type cylindrical core holder formed by protruding an elastic bearing portion (18) having a V-shaped vertical groove (20).