Cylindrical ferrite core fixing structure

Abstract

This invention provides a cylindrical ferrite core fixing structure that can accommodate cylindrical ferrite cores of different shapes. [Solution] A cylindrical ferrite core fixing structure is provided, which includes a fixing bracket for fixing cylindrical ferrite cores of different shapes that do not have a dedicated fixing case, wherein the fixing bracket has a base, a first wing portion, a second wing portion, a first hinge structure connecting the base and the first wing portion, and a second hinge structure connecting the base and the second wing portion. The base portion has a fixing hole, and is configured to be fixed to electrical equipment by a fixing means passed through the fixing hole.

Description

Technical Field

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[0001] The present disclosure is a technology effective when applied to a cylindrical ferrite core fixing structure.

Background Art

[0002] Patent Document 1 (Japanese Patent Application Laid-Open No. 2006-329283) discloses a pipe support fitting that smoothly and reliably supports a predetermined portion of a pipe, and is fixed by leg pieces 3 projecting outward in parallel from separated opposing ends of a band body 2 curved in a cylindrical shape. Patent Document 2 (Japanese Patent Application Laid-Open No. 2011-143930) discloses a fixing structure for a cylindrical underground tank, which is fixed by a fixing band or a fitting.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Many ferrite cores used for noise removal of power cables and the like have a cylindrical shape. For a ferrite core having a dedicated fixing case, the fixing case of the ferrite core may be fixed by providing fixing holes or the like in an electronic device. However, the shape of the ferrite core and the performance of noise removal of the ferrite core may be limited.

[0005] There are many types of cylindrical ferrite cores without a fixed case. The dimensions of ferrite cores vary depending on their performance. In some cases, a clear method for fixing cylindrical ferrite cores without a fixed case is not provided. In some cases, cylindrical ferrite cores are fixed by relying on the strength of a cable wrapped around them, rather than being fixed in place. However, in electronic devices and electrical equipment where cylindrical ferrite cores are subjected to vibrations and shocks, it may not be acceptable for the cylindrical ferrite core to move due to vibrations or shocks.

[0006] This disclosure provides a cylindrical ferrite core fixing structure that can accommodate cylindrical ferrite cores of different shapes. Other challenges and novel features will become apparent from the description herein and the accompanying drawings. [Means for solving the problem]

[0007] A brief overview of some of the representative disclosures is as follows:

[0008] According to one embodiment, a cylindrical ferrite core fixing structure is provided, which includes a fixing bracket for fixing cylindrical ferrite cores of different shapes that do not have a dedicated fixing case, The fixing bracket comprises a base, a first wing portion, a second wing portion, a first hinge structure connecting the base and the first wing portion, and a second hinge structure connecting the base and the second wing portion. The base portion has a fixing hole, The base is configured to be fixed to the electrical equipment by a fixing means passed through the fixing hole. [Effects of the Invention]

[0009] According to the cylindrical ferrite core fixing structure of the above embodiment, a cylindrical ferrite core that does not have a dedicated fixing case can be stably fixed by providing a fixing bracket. [Brief explanation of the drawing]

[0010] [Figure 1]Figure 1 shows an example of a cylindrical ferrite core configuration without a fixed case. [Figure 2] Figure 2 shows a fixing bracket according to an embodiment. [Figure 3] Figure 3 is a perspective view of the fixing bracket shown in Figure 2 with the wing portion movable by a hinge. [Figure 4] Figure 4 shows the fixing structure of a cylindrical ferrite core using the fixing bracket shown in Figure 2. [Modes for carrying out the invention]

[0011] The embodiments will be described below with reference to the drawings. However, in the following description, the same reference numerals will be used for the same components, and repeated explanations may be omitted. In addition, the drawings may be more schematic than the actual embodiments in order to make the explanation clearer, but they are merely examples and do not limit the interpretation of this disclosure. [Examples]

[0012] Figure 1 shows an example of the configuration of a cylindrical ferrite core without a fixed case. Figure 2 shows a fixing bracket according to the embodiment. Figure 3 is a perspective view of the fixing bracket in Figure 2 with the wing portion movable by a hinge. Figure 4 shows the fixing structure of a cylindrical ferrite core using the fixing bracket in Figure 2.

[0013] FIG. 1 shows a configuration example of a cylindrical ferrite core without a dedicated fixing case. In this example, two cylindrical ferrite cores 1 (1a, 1b) and a cable 2 are depicted. Each of the cylindrical ferrite cores 1 has a cylindrical outer shape, and an opening penetrating in the length direction of the cylinder is provided at the center of the cylinder. In this example, the cylindrical ferrite core 1 includes a first ferrite core 1a and a second ferrite core 1b. The diameter D1 of the first ferrite core 1a is configured to be longer than the diameter D2 of the second ferrite core 1b (D1 > D2). Also, the length L1 of the first ferrite core 1a is configured to be longer than the length L2 of the second ferrite core 1b (L1 < L2). Note that the diameter D and length L of the ferrite core are values determined by performance.

[0014] The cable 2 is, for example, a power cable and is passed through the openings of the two cylindrical ferrite cores 1. In this example, the cable 2 is passed from the right side of the first ferrite core 1a through the opening of the first ferrite core 1a, passes from the left side of the first ferrite core 1a to the upper side of the first ferrite core 1a, and is passed through the opening of the first ferrite core 1a again. Then, the cable 2 is passed through the opening of the second ferrite core 1b from the right side of the second ferrite core 1b, passes from the left side of the second ferrite core 1b to the upper side of the second ferrite core 1b, and is passed through the opening of the second ferrite core 1b again.

[0015] In the present disclosure, it is a technique for fixing cylindrical ferrite cores with different outer shapes such as the first ferrite core 1a and the second ferrite core 1b in FIG. 1 by a fixing metal fitting 10 described in FIGS. 2 and 3.

[0016] Figure 2 depicts a front view, a top view, and a right side view of the fixing bracket 10. Figure 3 depicts a perspective view when the wings (4, 5) of the fixing bracket 10 are moved by the hinges (6a, 6b). The fixing bracket 10 includes a base 3, a first wing 4, and a second wing 5. The left side of the base 3 and the right side of the first wing 4 are connected by a first hinge portion 6a. Thereby, the first wing 4 is configured to be movable to the first direction side indicated by the movable direction RA with respect to the base 3. The right side of the base 3 and the left side of the second wing 5 are connected by a second hinge portion 6b. Thereby, the second wing 5 is configured to be movable to the first direction side indicated by the movable direction RB with respect to the base 3. The base 3, the movable first wing 4, and the second wing 5 are configured such that, as shown in Figure 3, the first wing 4 and the second wing 5 open fan - shaped on the left and right sides of the base 3. Thereby, the base 3, the first wing 4, and the second wing 5 are configured to be able to stably support the curved surfaces 1ar, 1br on the lower side of the cylindrical outer periphery of the cylindrical ferrite cores 1a, 1b at three points, as shown in Figure 4.

[0017] The base 3 has a concave shape when viewed from above, and includes a first rectangular portion 3a provided with two fixing holes 8, and rectangular first protrusions 3b and rectangular second protrusions 3c provided on the upper sides on both sides of the first rectangular portion 3a. The first hinge portion 6a is provided on the left side of the first protrusion 3b. The second hinge portion 6b is provided on the right side of the second protrusion 3c. The fixing holes 8 are configured such that fixing screws 12 as fixing means are attached thereto, as shown in Figure ”. The fixing screws 12 are used to fix the fixing brackets 10 (10a, 10b, 10c) and the chassis 13 of the electrical equipment, as shown in Figure 4.

[0018] Also, when the base 3 is viewed from above, a claw portion 7 is provided on the upper side of the first rectangular portion. The claw portion 7 is provided at the same position as the lower side of the first wing 4 and the lower side of the second wing 5 when viewed from above. The claw portion 7 protrudes to the sides of the movable directions RA, RB of the first wing 4 and the second wing 5. Thereby, the claw portion 7 is configured to be able to press the flat side surfaces 1as of the cylindrical ferrite core 1a and the front and rear flat side surfaces 1bs of the cylindrical ferrite core 1b, as shown in Figure 4.

[0019] On the left side of the first blade portion 4, there is a bent portion 4a bent in a direction opposite to the movable direction RA, and a first stop hole 9a is provided in the bent portion 4a. Similarly, on the right side of the second blade portion 5, there is a bent portion 5a bent in a direction opposite to the movable direction RB, and a second stop hole 9b is provided in the bent portion 5a. The first stop hole 9a and the second stop hole 9b are configured to allow a bundling means (bundling band) 11 to pass through. That is, as shown in FIG. 4, the first stop hole 9a and the second stop hole 9b are configured to be able to press the curved surfaces 1ar and 1br on the upper side of the cylindrical outer periphery of the cylindrical ferrite cores 1a and 1b through the bundling means (bundling bands) 11 (11a, 11b, 11).

[0020] In the fixing bracket 10 of FIG. 2, although not particularly limited, the length LL1 of the fixing bracket 10 can be, for example, 72 mm, and the width LL2 of the fixing bracket 10 can be, for example, 18 mm.

[0021] The cylindrical ferrite core fixing structure 100 will be described using FIG. 4.

[0022] The cylindrical ferrite core fixing structure 100 shown in FIG. 4 is a perspective view of the cylindrical ferrite core fixing structure 100 when the cylindrical ferrite cores 1a and 1b in FIG. 1 are fixed to the chassis 13 of the electrical equipment using three fixing brackets 10 (10a, 10b, 10c).

[0023] The cylindrical ferrite core 1a is fixed by one first fixing bracket 10a and one first bundling band 11a, and the first fixing bracket 10a is fixed to the chassis 13 with a fixing screw 12.

[0024] The cylindrical ferrite core 1b is fixed by two second fixing brackets 10b and a third fixing bracket 10c, and two second cable ties 11b and a third cable ties 11c, with the second fixing brackets 10b and the third fixing brackets 10c being fixed to the chassis 13 with fixing screws 12. Here, the second fixing brackets 10b and the third fixing brackets 10c fix both the front and rear ends of the cylindrical ferrite core 1b. In other words, the claw portion 7 of the second fixing bracket 10b is configured to press against the front flat surface 1bs of the cylindrical ferrite core 1b, and the claw portion 7 of the third fixing bracket 10c is configured to press against the rear flat surface 1bs of the cylindrical ferrite core 1b.

[0025] In this way, by configuring the fixing bracket 10, cylindrical ferrite cores that do not have a dedicated fixing case can be stably fixed. Furthermore, by configuring the fixing bracket 10, it is possible to provide a fixing bracket that can accommodate various cylindrical ferrite cores of different shapes, and a cylindrical ferrite core fixing structure using this fixing bracket.

[0026] The disclosure made by the Discloser has been described in detail based on the examples above, but it goes without saying that the disclosure is not limited to the above examples and can be modified in various ways. [Explanation of Symbols]

[0027] 1: Cylindrical ferrite core, 2: Cable, 3: Base, 4: First wing section, 5: Second wing section, 6a: First hinge section, 6b: Second hinge section, 7: Claw section, 8: Fixing hole, 9a: First fixing hole, 9b: Second fixing hole, 10: Fixing bracket, 11: Cable tie, 12: Fixing means (fixing screw), 13: Electrical equipment chassis, 100: Cylindrical ferrite core fixing structure.

Claims

1. A cylindrical ferrite core fixing structure equipped with fixing brackets for fixing cylindrical ferrite cores of different shapes that do not have a dedicated fixing case, The fixing bracket comprises a base, a first wing portion, a second wing portion, a first hinge structure connecting the base and the first wing portion, and a second hinge structure connecting the base and the second wing portion. The base portion has a fixing hole, A cylindrical ferrite core fixing structure is configured such that the base portion is fixed to an electrical device by a fixing means passed through the fixing hole.

2. A cylindrical ferrite core fixing structure according to claim 1, The first wing portion is movable toward the first direction relative to the base portion by the first hinge structure, The second wing portion is movable toward the first direction relative to the base portion by the second hinge structure, A cylindrical ferrite core fixing structure comprising the base, the movable first wing portion, and the second wing portion, configured to press against the curved surface of the cylindrical ferrite core.

3. A cylindrical ferrite core fixing structure according to claim 2, The base portion has a claw portion, The claw portion is configured to press against the flat surface of the cylindrical ferrite core, forming a cylindrical ferrite core fixing structure.

4. The fixing structure according to claim 3, The first wing portion has a first stopper hole, The second wing portion has a second retaining hole, A cylindrical ferrite core fixing structure configured such that fastening means are passed through the first and second fastening holes to press down on the upper part of the curved surface of the cylindrical ferrite core.

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