JP2014135871A - Retainer, and noise current absorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a retainer for noise current absorber that can hold a magnetic material in more appropriate state when it is attached to a wire, and to provide a noise current absorber.SOLUTION: A retainer 3 for noise current absorber 1 comprises a pair of housing sections 10, 10 for housing magnetic materials 5A, 5A, respectively. When the housing sections 10, 10 are attached to the outer periphery of a wire 2 so as to hold the wire 2 therebetween, while housing the magnetic materials 5A, 5A, respectively, the pair of magnetic materials 5A, 5A are held, in cylindrical shape, at a position surrounding the outer periphery of the wire 2. On the second sidewall 12 side of the housing sections 10, fitting parts 21, 21 and fitted parts 22, 22 are provided as blocking portions for blocking displacement of the second sidewalls 12, 12 of the pair of housing sections 10, 10 in the direction separating from each other, when an external force acts to bring the extension pieces 20, 20 of the pair of housing sections 10, 10 closer to a predetermined distance or less.

Description

  The present invention relates to a holder for a noise current absorber and a noise current absorber.

  Conventionally, a noise current absorber that is attached to an electric wire and absorbs a noise current flowing through the electric wire is known. As one of the noise current absorbers of this type, a pair of magnetic bodies that are cylindrical or annular as a whole when contacted with each other (hereinafter, both shapes are collectively referred to as a cylindrical shape), and these magnetic bodies Some have a holder that can hold both magnetic bodies in a cylindrical shape.

  When a noise current absorber having such a structure is attached to an electric wire, a pair of cylindrical magnetic bodies surrounds the electric wire from the outer peripheral side, whereby the pair of magnetic bodies magnetically form a closed magnetic circuit. The expected noise current absorption capability will be exhibited.

  In addition, as a holder for this type of noise current absorber, in a split holder for a cylindrical core obtained by equally dividing a hollow cylindrical body by a cylindrical peripheral wall and a side wall having a circular central window portion, Proposed a cylindrical core holder characterized in that a hook-shaped piece having a plurality of protrusions on the inner surface extending outward is integrally provided in the center of the semicircular window on the outer surface of the side wall via a band-shaped connecting piece. (For example, refer to Patent Document 1). In the case of this cylindrical core holder, it is said that the holder can be fixed to the electric wire by bringing the hook-like piece into contact with the electric wire from both sides and binding with a bundle band from above the hook-like piece. .

Japanese Patent Laid-Open No. 7-240317

  However, in the case of the technique described in Patent Document 1, when a holder (holding tool) 91 and an electric wire 92 are bound with a bundle band 93 as shown in FIG. If the diameter of the electric wire 92 is smaller than the interval, the holder 91 may not be properly mounted.

  More specifically, when the hook-like pieces 94, 94 are strongly pressed in the directions of arrows Z1, Z2 shown in FIG. 7 by the bundle band 93, the side wall on the side opposite to the protruding portion of the hook-like pieces 94, 94 is provided. 95 and 95 may be displaced in the directions of arrows Z3 and Z4 shown in FIG. In this case, since a gap (gap having a gap G shown in FIG. 7) is also generated between the pair of core pieces (magnetic bodies) 96 and 96 housed in the holder 91, a closed magnetic circuit by the core pieces 96 and 96 is formed. It may not be formed properly, and the expected noise current absorption capability may not be exhibited.

  Such a problem is a problem that may occur not only when the diameter of the electric wire 92 is thin as described above, but also when the outer sheath of the electric wire 92 is soft and easily crushed. For example, when the outer cover of the electric wire 92 is crushed and the pair of hook-shaped pieces 94 and 94 bite into the outer cover of the electric wire 92 when being bound with the bundle band 93, the distance between the hook-shaped pieces 94 and 94 is It becomes smaller than the diameter of the electric wire 92. Therefore, even if a combination in which the diameter of the electric wire 92 and the distance between the pair of hook-shaped pieces 94 and 94 coincide is selected, the above-described problem occurs.

  The present invention is capable of solving the above-described problems, and one of its purposes is a holder for a noise current absorber that can hold a magnetic body in a more appropriate state when attached to an electric wire. And providing a noise current absorber.

  The holder described below has a pair of storage portions that store a pair of magnetic bodies that are cylindrical or annular as a whole when brought into contact with each other, and stores the magnetic bodies in the storage portions. Then, when the electric wire is mounted on the outer periphery of the electric wire in such a manner that the electric wire is sandwiched between the storage parts, the noise current that becomes a state in which the pair of magnetic bodies in the cylindrical shape or the annular shape is held at a position surrounding the outer periphery of the electric wire. A holder for an absorbent device, wherein the storage portion includes a first side wall that defines one end, a second side wall that defines the other end of the storage portion in the axial direction of the electric wire, and the first side wall. A peripheral wall defining an outer peripheral portion of the storage portion between the one side wall and the second side wall, and the first side wall has an extension extending toward the outside of the storage portion along the electric wire A piece is provided and the second side wall side of the storage portion Prevents the second side walls of each of the pair of storage portions from being displaced in a direction away from each other when an external force is applied that causes the extended pieces included in each of the pair of storage portions to approach each other to a predetermined distance or less. A blocking portion that protrudes from one of the storage portions toward the other storage portion and is fitted to a fitted portion provided in the other storage portion. Thus, the second side wall is prevented from being displaced in a direction away from each other, and the fitting portion has a length in a direction parallel to the axial direction of the electric wire as viewed from the protruding direction of the fitting portion. Is formed in a position that is longer than the length in the direction perpendicular to the axial direction of the electric wire or that forms a gap between the second side wall, the fitting part or the second side wall With the deformation of the tip of the fitting portion in the axial direction of the electric wire Characterized in that it is suppressed coordinating the.

  If a noise current absorber is configured using such a holder, the extension pieces are arranged on both sides of the electric wire, and are bound by some member (for example, a bundle band) from the outer periphery, thereby reducing the noise. The current absorber can be firmly fixed to the electric wire.

  In addition, when the diameter of the electric wire is narrower than the distance between the pair of extending pieces, even if the pair of extending pieces are strongly bound from the outer peripheral side, the blocking portion as described above is provided. Displacement of the second side walls of the storage portions in the direction away from each other is prevented. Accordingly, a gap is less likely to be generated between the pair of magnetic bodies held by the holder, compared to the case in which such a blocking portion is not provided, and a magnetic closed magnetic path formed by the pair of magnetic bodies is appropriate. Therefore, a good noise absorption effect can be obtained with certainty.

  Moreover, the fitting part which comprises the blocking part mentioned above is the shape where the length of the direction parallel to the axial direction of an electric wire is longer than the length of the direction perpendicular | vertical to the axial direction of an electric wire seeing from the protrusion direction of the said fitting part If it is, it will become difficult to bend to the axial direction of an electric wire, Therefore It becomes possible to suppress that the front-end | tip of a fitting part is displaced to the axial direction of an electric wire. Also, if the fitting part is formed at a position where a gap is formed between the fitting part and the second side wall, even if the second side wall is deformed, the fitting part will not bend following the deformation. The displacement of the tip of the fitting portion in the axial direction of the electric wire can be suppressed.

  Therefore, if one or both of these configurations are adopted, the pair of first side walls are used as fulcrums as compared to the structure in which the tip of the fitting portion is easily displaced in the axial direction of the electric wire. When the pair of second side walls are displaced in the direction in which the pair of second side walls are separated from each other, it is possible to prevent or suppress the tip of the fitting portion from being displaced in a direction in which the second side walls are easily separated from each other. Therefore, it is possible to enhance the effect of preventing or suppressing the occurrence of a gap between the pair of magnetic bodies, and to expect a better noise absorption effect.

  Moreover, in the holder configured as described above, the fitting portion has a length in a direction parallel to the axial direction of the electric wire as viewed from the protruding direction of the fitting portion, which is perpendicular to the axial direction of the electric wire. The shape is longer than the length in the direction, and is integrally formed with the peripheral wall at a location parallel to the axial direction of the electric wire, and is integrally formed with the second side wall at a location perpendicular to the axial direction of the electric wire. Preferably.

  If the noise current absorber is configured using such a holder, the fitting portion is integrally formed with the peripheral wall and the second side wall, so that the bending rigidity of the fitting portion increases, and the fitting portion Displacement of the tip of the wire in the axial direction of the electric wire can be prevented or suppressed even better.

  In particular, since the length of the fitting portion in the direction parallel to the axial direction of the electric wire is longer than the length in the direction perpendicular to the axial direction of the electric wire, the length of the portion integrally formed with the peripheral wall is It becomes longer than the length of the part integrally molded with the second side wall. Therefore, the bending rigidity of the second side wall is likely to be lower in the peripheral wall having a shape substantially corresponding to a part of the cylindrical body and the second side wall having a shape substantially corresponding to the plate-like body. Since the peripheral wall side with higher bending rigidity mainly supports the fitting part firmly, the tip of the fitting part is prevented from being displaced more than the second side wall mainly supporting the fitting part. In addition, the suppressing effect can be enhanced.

  In addition, the noise current absorber described below has a pair of magnetic bodies that are cylindrical or annular as a whole when brought into contact with each other, and a pair of storage portions that store the pair of magnetic bodies, When each of the magnetic bodies is housed in each of the housing portions, and the electric wire is sandwiched between the housing portions and attached to the outer periphery of the electric wire, the pair of magnetic bodies that are cylindrical or annular form the outer periphery of the electric wire. A noise current absorber including a holder that is held at a surrounding position, wherein the storage portion includes a first side wall that defines one end of both ends of the storage portion in the axial direction of the electric wire. A second side wall that defines the other end, and a peripheral wall that defines an outer peripheral portion of the storage portion between the first side wall and the second side wall, and the first side wall extends along the electric wire. Extension extending toward the outside of the storage part When the external force that causes the extension pieces included in each of the pair of storage units to approach each other to a predetermined distance or less acts on the second side wall side of the storage unit, the each of the pair of storage units A blocking portion that prevents the second side walls from being displaced in a direction away from each other is provided, and the blocking portion includes a fitting portion that protrudes from one of the storage portions toward the other storage portion of the other side wall. By fitting into a fitted portion provided in the storage portion, the second side wall is prevented from being displaced in a direction away from each other, and the fitting portion has a protruding direction of the fitting portion. The length in the direction parallel to the axial direction of the electric wire is longer than the length in the direction perpendicular to the axial direction of the electric wire, or is formed at a position forming a gap between the second side wall. Is accompanied by deformation of the fitting part or the second side wall. Tip of the fitting portion Te is equal to or that is suppressed from being displaced in the axial direction of the electric wire.

  In the noise absorber thus configured, the holder is configured in the same manner as the holder described above, and has the same operations and effects as described above, so that a gap is generated between the pair of magnetic bodies. It can be prevented or suppressed, and a good noise absorption effect can be expected.

  In the noise current absorber configured as described above, the fitting portion has a length in a direction parallel to the axial direction of the electric wire as viewed from the protruding direction of the fitting portion in the axial direction of the electric wire. The shape is longer than the length in the vertical direction, and is integrally formed with the peripheral wall at a location parallel to the axial direction of the electric wire, and the second side wall at a location perpendicular to the axial direction of the electric wire. It is preferable that they are integrally molded.

(A) is a perspective view which shows the use condition of a noise current absorber, (b) The perspective view which shows a noise current absorber. (A) is a perspective view which shows a holder, (b) is a perspective view which shows a magnetic body. (A) is explanatory drawing which looked at the state which a pair of storage part is not engaged from the 1st side wall side, (b) is explanatory drawing which looked at the state where a pair of storage part was engaged from the 1st side wall side. Explanatory drawing which looked at the use condition of a noise current absorber from the surrounding wall side. The perspective view of another holder. Furthermore, the perspective view of another holder. Explanatory drawing which shows the problem of the conventional noise current absorber.

  Next, embodiments of the present invention will be described with specific examples. In the following description, the description will be made using each of the up / down / left / right and front / rear directions shown in the drawing as needed. However, each of these directions is only a direction defined in order to briefly explain the relative positional relationship between the respective parts constituting the noise current absorbing tool or the holding tool. When the noise current absorber or holder is actually used, the direction in which the noise current absorber or holder is oriented is arbitrary. For example, the vertical direction shown in the figure is vertical in relation to gravity. It may be used in a state that does not match the direction.

[First case]
The noise current absorber 1 shown in FIGS. 1 (a) and 1 (b) is attached to the outer periphery of the electric wire 2 in order to absorb the noise current flowing through the electric wire 2, and is made of a resin holder 3; And a cylindrical magnetic body 5 made of a magnetic material (ferrite in this embodiment). The holder 3 is configured by combining a pair of resin parts 3A and 3A, and the cylindrical magnetic body 5 is configured by combining a pair of magnetic bodies 5A and 5A.

  However, since the pair of resin parts 3A and 3A have the same shape and the pair of magnetic bodies 5A and 5A have the same shape, the resin parts 3A disposed on the lower side in FIGS. 1 (a) and 1 (b). Only the magnetic body 5A is clearly indicated by a solid line. Actually, the resin component 3A (refer to the phantom line in FIG. 1A) and the magnetic body 5A (not shown) are also arranged on the upper side in the figure in a state where the top, bottom, left and right are inverted 180 degrees.

  The electric wire 2 is arrange | positioned in the position pinched | interposed between a pair of magnetic bodies 5A and 5A, and is made into the state currently passed by the inner peripheral side of the cylindrical magnetic body 5. In the following, the description will be continued with reference to the resin component 3A and the magnetic body 5A arranged on the lower side in the drawing.

  As shown in FIG. 2A, the resin component 3A includes a storage portion 10 that can store the magnetic body 5A. The storage unit 10 defines an outer peripheral side between the first side wall 11 that defines the front end side in the figure, the second side wall 12 that defines the rear end side in the figure, and the first side wall 11 and the second side wall 12. The upper surface side in the figure is an opening surface 15 for taking in and out the magnetic body 5A.

  On the inner surface side of the peripheral wall 13, a biasing piece 16 that biases the magnetic body 5 </ b> A stored in the storage portion 10 toward the opening surface side (upward in the drawing) at a position below the opening surface 15 in the drawing. Is protruding. In addition, a pair of left and right protrusions 17 and 17 in the figure are formed on the inner surface side of the peripheral wall 13 (however, only the left protrusion 17 is shown in FIG. 2A).

  An engagement portion 18 that protrudes upward in the figure is formed at the center of the left end of the peripheral wall 13 in the drawing, and the engagement portion 18 is inserted downward in the drawing at the center of the right end of the peripheral wall 13 in the drawing. An engaged portion 19 that engages with the engaging portion 18 is provided.

  When the engaging portion 18 and the engaged portion 19 are aligned in a direction in which the opening surfaces 15 included in the pair of resin components 3A and 3A are in contact with each other, the engaging portion 18 included in one resin component 3A and The engaged portion 19 of the other resin component 3A is engaged, and the engaging portion 18 of the other resin component 3A is engaged with the engaged portion 19 of the one resin component 3A.

  The first side wall 11 and the second side wall 12 are formed with substantially semicircular cutouts 11A and 12A, respectively. And the extension piece 20 is extended toward the outer side of the accommodating part 10 from the periphery of the periphery of the notch 11A on the first side wall 11 side.

  Further, a fitting portion 21 protruding upward in the drawing is formed near the rear end of the peripheral wall 13 in the drawing and near the left end of the second side wall 12 in the drawing. Near the right end of the side wall 12 in the figure, there is provided a fitted part 22 into which the fitting part 21 is fitted when the fitting part 21 is inserted with the fitting part 21 facing downward in the figure.

  When these fitting parts 21 and fitted parts 22 are aligned in the direction in which the opening surfaces 15 provided in each of the pair of resin parts 3A and 3A abut each other, the fitting part 21 included in one resin part 3A and The fitted portion 22 of the other resin component 3A is fitted, and the fitted portion 21 of the other resin component 3A and the fitted portion 22 of the one resin component 3A are fitted.

  As shown in FIG. 2B, the magnetic body 5A has a shape formed by dividing the cylindrical body into two parts by a plane parallel to the axial direction. An electric wire insertion groove 25 having a semicircular cross-sectional shape perpendicular to the axial direction is formed in the central portion of the magnetic body 5A along the axial direction. When the cylindrical magnetic body 5 is configured by combining 5A, a contact surface 26 that is in contact with each other is formed.

  Engaging grooves 27 and 27 extending in the axial direction (front-rear direction in the figure) are formed on the outer peripheral side of the magnetic body 5A. These engagement grooves 27 and 27 engage with the protrusions 17 and 17 described above when the magnetic body 5 </ b> A is fitted into the storage unit 10.

  As shown in FIG. 3A, the noise current absorber 1 as described above is a magnetic body for the storage portions 10 and 10 when the holder 3 is opened by separating the opening surfaces 15 and 15 from each other. 5A and 5A can be taken in and out. However, since the protrusions 17 and 17 are engaged with the engaging grooves 27 and 27 of each magnetic body 5A (not shown), the magnetic body 5A easily falls out of the storage portions 10 and 10. There is nothing. In this state, the magnetic bodies 5A are not in contact with each other, and the cylindrical magnetic body 5 is not formed.

  On the other hand, as shown in FIG. 3B, when the holder 3 is closed by aligning the opening surfaces 15 and 15 of the storage portions 10 and 10, the magnetic body 5A to be stored cannot be taken in and out. . In this state, the engaging portion 18 of the one resin component 3A and the engaged portion 19 of the other resin component 3A are engaged, and the engaging portion 18 of the other resin component 3A and the one of the one resin component 3A are engaged. Since the engaged portion 19 of the resin component 3A is engaged, the holder 3 is maintained in the closed state.

  Further, when the holder 3 is in the closed state, the fitting portion 21 of one resin component 3A and the fitted portion 22 of the other resin component 3A are fitted, and the fitting of the other resin component 3A is fitted. The mating portion 21 and the fitted portion 22 of the one resin part 3A are fitted. The operation of the fitting parts 21 and 21 and the fitted parts 22 and 22 will be described later.

  When the holder 3 is in the closed state, the contact surfaces 26 and 26 of the magnetic bodies 5A and 5A come into contact with each other, whereby the cylindrical magnetic body 5 is configured. A through hole (that is, a region surrounded by the two electric wire insertion grooves 25, 25) of the cylindrical magnetic body 5 serves as an insertion hole 28 for inserting the electric wire 2. Since the magnetic bodies 5A and 5A are biased toward each other by the biasing piece 16, the contact surfaces 26 of the magnetic bodies 5A and 5A are reliably in contact with each other. Maintained.

  Since the notches 11A and 12A of the first side wall 11 and the second side wall 12 are formed in accordance with the wire insertion grooves 25 and 25 of the magnetic bodies 5A and 5A, the insertion hole 28 is closed even when the holder 3 is closed. It will not come off.

  When the noise current absorber 1 is attached to the electric wire 2, the holder 3 is opened, the electric wire 2 is arranged between the electric wire insertion grooves 25, 25, and the holder 3 is closed. The current absorber 1 is attached to the outer periphery of the electric wire 2. Further, when it is desired to firmly fix the noise current absorber 1 to the electric wire 2, as shown in FIG. 4, any member from the outer peripheral side of the extended pieces 20, 20 located on both sides sandwiching the electric wire 2. The electric wire 2 and the extended pieces 20 and 20 are tightly bound (for example, the bundle band 30).

  At this time, when the diameter of the electric wire 2 is thinner than the distance between the extended pieces 20 and 20, or when the outer cover of the electric wire 2 is soft and the extended pieces 20 and 20 bite into the electric wire 2, The distance between the extended pieces 20 and 20 is closer than the original design dimension. In this case, as described in the column of [Problems to be Solved by the Invention] with an illustration, the end (the second side wall 12 side) opposite to the end (the first side wall 11 side) that is bound. ), A force acts to move the upper and lower second side walls 12, 12 apart vertically.

  However, in the holder 3, the fitting portions 21 and 21 and the fitted portions 22 and 22 are provided at positions on the second side walls 12 and 12 side, and these are fitted to each other as described above. Thereby, separation of the second side walls 12 and 12 is prevented. That is, the fitting parts 21 and 21 and the fitted parts 22 and 22 function as blocking parts that prevent the second side walls 12 and 12 of the pair of storage parts 10 and 10 from being displaced in a direction away from each other. ing.

  Therefore, separation of the storage portions 10 and 10 is prevented or suppressed, and the holder 3 is appropriately maintained in the closed state. As a result, the magnetic bodies 5A and 5A (specifically, the contact surfaces 26 and 26) housed in the pair of housing portions 10 and 102 are not separated from each other, and a magnetically closed magnetic path is formed by the pair of magnetic bodies 5A and 5A. Since the state in which is formed is appropriately maintained, the noise absorption effect can be reliably obtained.

  In particular, in the case of the fitting portion 21, the length L1 in the direction (front-rear direction in the drawing) parallel to the axial direction of the electric wire 2 when viewed from the protruding direction of the fitting portion 21 (upward in the drawing) is the axis of the electric wire 2. The shape is longer than the length L2 in the direction perpendicular to the direction (left-right direction in the figure) (that is, L1> L2). Therefore, compared with the case where the thickness in the front-rear direction is thin (that is, L1 <L2), the fitting portion 21 is less likely to bend in the axial direction of the electric wire 2 and the tip of the fitting portion 21 is deformed as the fitting portion 21 is deformed. Displacement in the axial direction of the electric wire 2 can be suppressed.

  Therefore, when a force acting to separate the pair of second side walls 12 and 12 is applied, the tips of the fitting portions 21 and 21 are displaced in a direction in which the second side walls 12 and 12 are easily separated. Can be prevented or suppressed. Thereby, the effect which prevents thru | or suppresses that a clearance gap produces between a pair of magnetic bodies 5A and 5A can be heightened.

  In the case of the fitting part 21, since the fitting part 21 is integrally formed with the second side wall 12 and the peripheral wall 13, the bending rigidity of the fitting part 21 is increased also in this respect, and the fitting part 21. Displacement of the tip of the wire in the axial direction of the electric wire 2 (the front-rear direction in the figure) can be prevented or suppressed even better. When the second side wall 12 and the peripheral wall 13 are compared, the second side wall 12 has a planar shape, and the peripheral wall 13 has a cylindrical curved shape. Therefore, if the wall thickness is equal, the peripheral wall 13 is more rigid than the second side wall 12. In the case of the fitting part 21, as described above, the length L1 of the part integrally formed with the peripheral wall 13 is longer than the length L2 of the part integrally formed with the second side wall 12. (Ie, L1> L2). Therefore, even if the second side wall 12 is slightly deformed, the fitting portion 21 is firmly supported by the peripheral wall 13, and displacement of the tip of the fitting portion 21 with the deformation of the second side wall 12 is also suppressed.

[Second case]
Next, another example will be described. In addition, since the cases described below have many configurations in common with the first case described above, the differences from the first case will be described in detail, and the common configurations will be the same as the first case. Only the reference numerals are attached, and detailed description thereof is omitted.

  In the first case described above, even if the second side wall 12 is slightly deformed by setting the relationship between the longitudinal length L1 and the lateral length L2 of the fitting portion 21 to L1> L2, the fitting portion 21 is Although the structure is firmly supported by the peripheral wall 13, the following configuration can be considered as means for eliminating the influence on the fitting portion 21 when the second side wall 12 is deformed.

  That is, in the case shown in FIG. 5, the fitting portion 21 is formed at a position where the gap 31 having the gap G is formed between the fitting portion 21 and the second side wall 12. That is, the fitting portion 21 is integrally formed with the peripheral wall 13 but is separated from the second side wall 12.

  By adopting such a configuration, even if the second side wall 12 is slightly deformed, the fitting portion 21 does not bend following the deformation, so that the tip of the fitting portion 21 is in the axial direction of the electric wire 2 (in the drawing). It is possible to suppress displacement in the front-rear direction).

  Therefore, even if such a configuration is adopted, when a force is applied to separate the pair of second side walls 12 and 12, the second side walls 12 and 12 are fitted in a direction that facilitates separation. It can prevent thru | or suppress that the front-end | tip of the parts 21 and 21 displaces. Thereby, the effect which prevents thru | or suppresses that a clearance gap produces between a pair of magnetic bodies 5A and 5A can be heightened.

[Third example]
If the fitting part 21 was formed in the position which makes the space | gap 31 of the space | interval G between the fitting part 21 and the 2nd side wall 12 like said 2nd example, the 2nd side wall 12 deform | transformed a little. Even so, the fitting portion 21 will not bend following it.

  Therefore, when the bending rigidity of the fitting portion 21 can be sufficiently secured only by such measures, the relationship between the front-rear direction length L1 and the left-right direction length L2 of the fitting portion 21 is expressed as L1 as shown in FIG. <L2 is also acceptable. That is, among the configurations disclosed as the first case to the third case, which configuration is adopted to increase the bending rigidity of the fitting portion 21 can be arbitrarily selected in consideration of the required rigidity. That's fine. In the case where it is desired to increase the rigidity of the fitting portion 21 while eliminating the influence due to the deformation of the second side wall 12, the second case is suitable, and the deformation of the second side wall 12 may not be excessively considered. For this, the first case is suitable.

[Modifications, etc.]
As mentioned above, although embodiment of this invention was described, this invention is not limited to said specific example, In addition to this, it can implement with a various form.

  For example, in each case described above, the fitting part 21 and the fitted part 22 provided as the blocking part are provided on the rear end side (near the second side wall 12) of the storage part 10, In addition, an equivalent blocking portion (the fitting portion 21 and the fitted portion 22) may be provided on the front end side (near the first side wall 11) of the storage portion 10.

  In each of the above cases, only the fitting part 21 and the fitted part 22 provided as the blocking part are described as being fitted to each other. The joint portion 21 is press-fitted into the fitted portion 22, and when the fitting portion 21 is fitted into the fitted portion 22, either one of the convex portions or the concave portion is located on the other side. It may be in any form such as a thing caught on Further, as a specific form of the fitted portion 22 itself, when the fitting portion 21 is inserted, such as a bottomed hole shape, a through hole shape, a groove shape, etc., it is received and fitted. Anything can be used as long as it is in a combined state.

  Further, in each of the above cases, the electric wire 2 is exemplified as an object for obtaining the noise absorbing effect. However, the electric wire may be either a power line or a signal line, and propagation of noise current (noise current) is considered. All can be applied to the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Noise current absorption tool, 2 ... Electric wire, 3 ... Holder, 3A ... Resin component, 5 ... Cylindrical magnetic body, 5A ... Magnetic body, 10 ... Storage part, 11 ... First side wall, 12 ... Second side wall, 11A, 12A ... Notch, 13 ... Peripheral wall, 15 ... Opening surface, 16 ... Biasing piece, 17 ... Projection part, 18 ... Engagement part, 19 ... Engagement part, 20 ... Extension piece, 21 ... Fitting part , 22 ... mated part, 25 ... electric wire insertion groove, 26 ... abutment surface, 27 ... engagement groove, 28 ... insertion hole, 30 ... bundle band, 31 ... gap, 91 ... holder, 92 ... electric wire, 93 ... bundle band, 94 ... bowl-shaped piece, 95 ... side wall, 96 ... core piece.

Claims (3)

A pair of storage portions for storing each of a pair of magnetic bodies that are cylindrical or annular as a whole when brought into contact with each other, each of the magnetic bodies being stored in each of the storage portions, and an electric wire between the storage portions Is attached to the outer periphery of the electric wire so as to sandwich the pair of magnetic bodies in a state of holding the cylindrical or annular magnetic body at a position surrounding the outer periphery of the electric wire. And
The storage portion includes a first side wall that defines one end, a second side wall that defines the other end, and a space between the first side wall and the second side wall, of both ends of the storage portion in the axial direction of the electric wire. And a peripheral wall defining an outer peripheral portion of the storage portion,
The first side wall is provided with an extending piece extending toward the outside of the storage portion along the electric wire,
The second side wall of each of the pair of storage portions is applied to the second side wall side of the storage portion when an external force that causes the extended pieces included in the pair of storage portions to approach each other to a predetermined distance or less is applied. A blocking portion is provided to prevent displacement in a direction away from each other,
In the blocking portion, a fitting portion that protrudes from one storage portion toward the other storage portion fits into a fitting portion provided in the other storage portion, so that the second side wall Are configured to prevent displacement in directions away from each other,
The fitting portion has a shape in which a length in a direction parallel to the axial direction of the electric wire is longer than a length in a direction perpendicular to the axial direction of the electric wire as viewed from the protruding direction of the fitting portion, or Suppressing displacement of the tip of the fitting portion in the axial direction of the electric wire with deformation of the fitting portion or the second side wall by being formed at a position forming a gap with the second side wall. A holding tool characterized by that. The fitting portion has a shape in which a length in a direction parallel to the axial direction of the electric wire is longer than a length in a direction perpendicular to the axial direction of the electric wire when viewed from the protruding direction of the fitting portion. 2. It is integrally formed with the peripheral wall at a location parallel to the axial direction of the electric wire, and is integrally formed with the second side wall at a location perpendicular to the axial direction of the electric wire. Retainer. A pair of magnetic bodies that are generally cylindrical or annular when brought into contact with each other;
Having a pair of storage portions for storing each of the pair of magnetic bodies, storing each of the magnetic bodies in each of the storage portions, and mounting the outer periphery of the wires in a manner of sandwiching the electric wires between the storage portions; A noise current absorber comprising: a holder that is in a state in which the pair of magnetic bodies that are cylindrical or annular is held at a position that surrounds the outer periphery of the electric wire,
The storage portion includes a first side wall that defines one end, a second side wall that defines the other end, and a space between the first side wall and the second side wall, of both ends of the storage portion in the axial direction of the electric wire. And a peripheral wall defining an outer peripheral portion of the storage portion,
The first side wall is provided with an extending piece extending toward the outside of the storage portion along the electric wire,
The second side wall of each of the pair of storage portions is applied to the second side wall side of the storage portion when an external force that causes the extended pieces included in the pair of storage portions to approach each other to a predetermined distance or less is applied. A blocking portion is provided to prevent displacement in a direction away from each other,
In the blocking portion, a fitting portion that protrudes from one storage portion toward the other storage portion fits into a fitting portion provided in the other storage portion, so that the second side wall Are configured to prevent displacement in directions away from each other,
The fitting portion has a shape in which a length in a direction parallel to the axial direction of the electric wire is longer than a length in a direction perpendicular to the axial direction of the electric wire as viewed from the protruding direction of the fitting portion, or Suppressing displacement of the tip of the fitting portion in the axial direction of the electric wire with deformation of the fitting portion or the second side wall by being formed at a position forming a gap with the second side wall. A noise current absorber characterized by that.

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