JP2020014184A - Noise filter and wire harness - Google Patents

Abstract

To eliminate effects of intermediate wires.SOLUTION: The noise filter includes: a filter circuit 10 including a noise reduction element 11 for reducing a noise component, a conductive first circuit connection member 12 to which first connection portion of the noise reduction element 11 is electrically connected, and a conductive second circuit connection member 13 to which a second connection portion of the noise reduction element 11 is electrically connected; a first electrical connection structure 30 for electrically connecting an intermediate connection part WEa1 of a core wire WEa of a first electric wire WE1 to the first circuit connection member 12; and a second electrical connection structure 40 for electrically connecting an intermediate connection part WEa2 of the core wire WEa of a second electric wire WE2 whose one end is grounded to the second circuit connection member 13.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a noise filter and a wire harness.

  2. Description of the Related Art Conventionally, there is known a technique of interposing a noise filter on a noise reduction target wire in order to reduce electric noise on the wire. The noise filter includes a filter circuit provided with a noise reduction element such as a capacitor, and the filter circuit is interposed between a noise reduction target wire and a ground terminal. This type of noise filter is disclosed, for example, in Patent Documents 1 and 2 below.

JP 2006-100061 A JP 2012-039201 A

  By the way, in the conventional noise filter, another intermediate electric wire connects the electric wire for noise reduction and the filter circuit. For example, the noise filter disclosed in Patent Literature 1 electrically connects a filter circuit to two branch wires branched from a main noise reduction target wire, and sets a noise component on the noise reduction target wire. Has been reduced. For this reason, in the conventional noise filter, it is necessary to adjust the filter circuit characteristics (resonance point, noise reduction performance, etc.) in consideration of the noise component that gets on the intermediate electric wire such as the branch electric wire. .

  Then, an object of the present invention is to provide a noise filter and a wire harness which are not affected by an intermediate electric wire.

  In order to achieve the above object, a noise filter according to the present invention includes a noise reduction element for reducing a noise component, a conductive first circuit connection member electrically connected to a first connection portion of the noise reduction element, and A filter circuit including a conductive second circuit connection member to which the second connection portion of the noise reduction element is electrically connected; and an intermediate connection portion of the core of the first electric wire electrically connected to the first circuit connection member. A second electrical connection structure for electrically connecting an intermediate connection portion of a core of a second electric wire whose one end is grounded to the second circuit connection member; It is characterized by having.

  Here, the first electric connection structure includes a first electric wire side connection body physically and electrically connected to the intermediate connection portion of the core wire of the first electric wire, and the first electric wire side connection body. And a first circuit-side connection member physically and electrically connected to the first circuit connection member, wherein the second electric connection structure includes the intermediate connection portion of the core wire of the second electric wire. A second wire-side connector physically and electrically connected to the second circuit-side connector physically and electrically connected to the second wire-side connector and the second circuit connection member And a connector.

  The first electrical connection structure may further include a first circuit-side connection body provided on the first circuit connection member, and indirectly or directly electrically connected to the intermediate connection portion of the core of the first electric wire. A second circuit-side connector provided on the second circuit-connecting member, and indirectly or directly electrically connected to the intermediate connection portion of the core of the second electric wire. It is desirable to have.

  In addition, the first electric connection structure includes a first electric wire side connection portion physically and electrically connected to the intermediate connection portion of the core wire of the first electric wire, and a first circuit connection member. And a first circuit-side connection portion that is physically and electrically connected to the intermediate connection portion of the core wire of the second electric wire. Electrical connection having a second electric wire side connection portion that is physically and electrically connected to the second circuit connection member, and a second circuit side connection portion that is physically and electrically connected to the second circuit connection member. Preferably, it is a member.

  Further, the first electric connection structure includes a first electric wire side connection body and a first electric wire side connection body that are electrically connected to each other by being inserted and fitted along the axial direction of the first electric wire and the second electric wire that run in parallel. A circuit-side connector, wherein the first wire-side connector is physically and electrically connected to the intermediate connection portion of the core wire of the first wire, and wherein the first circuit-side connector is The second electric connection structure is provided on the first circuit connection member, and the second electric connection structure is configured to electrically connect the first electric wire and the second electric wire that are run in parallel along the axial direction of the second electric wire to electrically connect each other. A wire-side connector and a second circuit-side connector, wherein the second wire-side connector is physically and electrically connected to the intermediate connection portion of the core wire of the second wire, It is desirable that the two-circuit-side connector be provided on the second circuit-connecting member.

  Further, the filter circuit, the first electric connection structure, the second electric connection structure, the intermediate connection portion of the core wire of the first electric wire, and the intermediate connection portion of the core wire of the second electric wire are connected inward. A housing that is housed in a housing room and pulls out respective end sides of the first electric wire and the second electric wire that run in the housing room outside the housing room; A protruding body protruding in a first protruding direction of one of the axial directions of the first electric wire and the second electric wire outside the chamber, and a main line including the first electric wire and the second electric wire; A first protruding holder for holding itself in the main line by wrapping the first tape together with the first tape, and the other of the first and second electric wires in the axial direction of the first electric wire and the second electric wire outside the accommodation chamber. 2 is a protruding body protruding in the protruding direction, And a second protruding holder for holding itself in the trunk by winding the loop together, wherein the first protruding holder is outside the housing chamber in the first protruding direction. It is arranged on one end side of each of the drawn-out first electric wire and the second electric wire and opposed to the first branch portion of each of the first electric wire and the second electric wire branched from the main line. And a tape affixing section for affixing the first tape on the side opposite to the first branch section, wherein the second protruding holder is oriented in the second protruding direction. The other end of each of the first electric wire and the second electric wire drawn out of the accommodation room, and the second electric wire of each of the first electric wire and the second electric wire branched from the main line An opposing arrangement section opposing the branch section; It is desirable to have a tape application unit for attaching a second tape in the opposite side to the branch portion.

  Further, the filter circuit, the first electric connection structure, the second electric connection structure, the intermediate connection portion of the core wire of the first electric wire, and the intermediate connection portion of the core wire of the second electric wire are connected inward. A housing that is housed in the housing room and pulls out the respective end sides of the first electric wire and the second electric wire that run in the housing room to the outside of the housing room, It is desirable to have a band clamp structure that wraps around the trunk line including the first electric wire and the second electric wire to hold itself.

  In order to achieve the above object, a wire harness according to the present invention includes a main line including a first electric wire and a second electric wire, and a noise filter for reducing a noise component, wherein the noise filter reduces a noise component. A noise reducing element, a conductive first circuit connection member electrically connected to the first connection portion of the noise reduction element, and a conductive first circuit connection member electrically connected to the second connection portion of the noise reduction element. A filter circuit including a two-circuit connection member, a first electrical connection structure for electrically connecting an intermediate connection portion of a core wire of the first electric wire to the first circuit connection member, and one end portion grounded. A second electrical connection structure for electrically connecting an intermediate connection portion of the core wire of the second electric wire to the second circuit connection member.

  In the noise filter according to the present invention, a filter circuit is interposed between the intermediate connection portion of the first electric wire and the intermediate connection portion of the second electric wire, and the filter circuit is electrically connected to each intermediate connection portion. are doing. For example, the first electric wire and the second electric wire are bundled in a trunk of a wire harness. Therefore, in this noise filter, it is not necessary to adjust the filter circuit characteristics in consideration of the influence of the branch wire (intermediate wire) from the main line as in the related art. That is, the noise filter according to the present invention is not affected by the intermediate electric wire. Further, the wire harness according to the present invention includes such a noise filter, and can provide an effect of obtaining the noise filter.

FIG. 1 is a perspective view illustrating a noise filter and a wire harness according to the embodiment. FIG. 2 is an exploded perspective view showing the noise filter and the wire harness of the embodiment. FIG. 3 is an exploded perspective view of the noise filter and the wire harness of the embodiment as viewed from another angle. FIG. 4 is a perspective view illustrating a filter circuit of the noise filter according to the embodiment. FIG. 5 is a simplified cross-sectional view taken along line X1-X1 and line X2-X2 of FIG. FIG. 6 is a cross-sectional view illustrating a part of a process of assembling the noise filter and the wire harness according to the embodiment. FIG. 7 is a conceptual diagram of filter circuit characteristics of the noise filter according to the embodiment. FIG. 8 is an exploded perspective view showing a first modification of the noise filter and the wire harness of the embodiment. FIG. 9 is a perspective view showing a first modification of the noise filter and the wire harness of the embodiment. FIG. 10 is a perspective view showing a second housing member of the first modified embodiment. FIG. 11 is an exploded perspective view illustrating a second modification of the noise filter and the wire harness according to the embodiment. FIG. 12 is a perspective view showing a second modification of the noise filter and the wire harness of the embodiment. FIG. 13 is a perspective view showing a third modification of the noise filter and the wire harness of the embodiment. FIG. 14 is a perspective view showing a fourth modification of the noise filter and the wire harness of the embodiment. FIG. 15 is a perspective view showing the first and second circuit connectors of the fourth modification. FIG. 16 is a perspective view showing a fifth modification of the noise filter and the wire harness of the embodiment. FIG. 17 is an exploded perspective view illustrating a sixth modification of the noise filter and the wire harness of the embodiment. FIG. 18 is a perspective view showing a sixth modification of the noise filter and the wire harness of the embodiment. FIG. 19 is a sectional view taken along line YY of FIG. FIG. 20 is a sectional view taken along line YY of FIG. FIG. 21 is an exploded perspective view showing the noise filter and the wire harness of the first modification. FIG. 22 is a perspective view illustrating a noise filter and a wire harness according to the first modification. FIG. 23 is a perspective view showing a first electric connection member and a second electric connection member of the first modification. FIG. 24 is a perspective view showing a first connector and a second connector of the first modification. FIG. 25 is a conceptual diagram of the filter circuit characteristics of the noise filter of the first modification. FIG. 26 is an exploded perspective view showing a first modification of the noise filter and the wire harness of the first modification. FIG. 27 is a perspective view illustrating an internal structure of a noise filter and a wire harness according to a first modification of the first modification. FIG. 28 is an exploded perspective view illustrating a noise filter and a wire harness according to a second modification of the first modification. FIG. 29 is a perspective view illustrating an internal structure of a noise filter and a wire harness according to a second modification of the first modification. FIG. 30 is a perspective view illustrating a noise filter and a wire harness according to a second modification. FIG. 31 is an exploded perspective view showing the noise filter and the wire harness of the second modification. FIG. 32 is an exploded perspective view of the noise filter and the wire harness of Modification 2 when viewed from another angle. FIG. 33 is a perspective view illustrating a filter circuit of the noise filter according to the second modification. FIG. 34 is a sectional view taken along line X3-X3 in FIG. FIG. 35 is a perspective view illustrating an example of a mounting structure of the noise filter. FIG. 36 is a perspective view showing an example of a state in which the noise filter is attached to a trunk line and a vehicle body. FIG. 37 is a perspective view showing another example of the mounting structure of the noise filter to the vehicle body. FIG. 38 is a perspective view showing another example of a structure for attaching a noise filter to a main line.

  Hereinafter, embodiments of a noise filter and a wire harness according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited by the embodiment.

[Embodiment]
One embodiment of a noise filter and a wire harness according to the present invention will be described with reference to FIGS.

  Reference numeral 1 in FIGS. 1 to 3 indicates a noise filter of the present embodiment. The noise filter 1 is a noise reduction device in which intermediate portions of two electric wires (a first electric wire WE1 and a second electric wire WE2) are connected by a filter circuit, and one of the two electric wires is grounded. The electrical noise component on the other of the two is reduced by the filter circuit. The two electric wires are, for example, two of a plurality of electric wires provided in a trunk line WT of a wire harness WH of a vehicle, one of which is grounded as a ground wire and the other is used as a power supply wire. Is done. For example, a load such as a defogger or a high-mount stop lamp is electrically connected to the power supply line. The noise filter 1 becomes one of the components of the wire harness WH by being connected to the two electric wires. In the wire harness WH exemplified below, the first electric wire WE1 is used as a power supply line, and the second electric wire WE2 is used as a ground line. One end of the first electric wire WE1 is electrically connected to a power source (for example, a secondary battery of a vehicle), and the other end is electrically connected to a load. One end of the second electric wire WE2 is grounded. Each of the first electric wire WE1 and the second electric wire WE2 includes a conductive core wire WEa and an insulating coating WEb that covers an outer peripheral surface of the core wire WEa.

[Noise filter 1A]
Hereinafter, a noise filter 1A as an example of the noise filter 1 will be described (FIGS. 1 to 3).

  The noise filter 1A is a noise reduction device including a filter circuit 10 for reducing a noise component (FIGS. 1 to 3). For example, the filter circuit 10 reduces an electrical noise component on the first electric wire WE1.

  The filter circuit 10 is interposed between a part of the core wire WEa located in the middle part of the first electric wire WE1 and a part of the core wire WEa located in the middle part of the second electric wire WE2. Electrical connection. In the following, a part of the core wire WEa located in the middle part of the first electric wire WE1 is referred to as “intermediate connection part WEa1”, and a part of the core wire WEa located in the middle part of the second electric wire WE2 is referred to as This is referred to as “intermediate connection part WEa2”. In the following, the intermediate connection part WEa1 of the core wire WEa of the first electric wire WE1 is simplified as “the intermediate connection part WEa1 of the first electric wire WE1”, and the intermediate connection part WEa of the second electric wire WE2 is connected. The portion WEa2 is simplified as “the intermediate connection portion WEa2 of the second electric wire WE2”.

  The filter circuit 10 is interposed between the intermediate connection portion WEa1 of the first electric wire WE1 and the intermediate connection portion WEa2 of the second electric wire WE2, and is electrically connected to the respective intermediate connection portions WEa1 and WEa2 ( (Fig. 1).

  The filter circuit 10 has at least one noise reduction element 11 for reducing a noise component, and a conductive state in which a first connection part (hereinafter, referred to as a “first element connection part”) of the noise reduction element 11 is electrically connected. A first connection member (hereinafter, referred to as a “first circuit connection member”) 12 and a second connection portion (hereinafter, referred to as a “second element connection portion”) of the noise reduction element 11 are electrically connected. (Hereinafter referred to as “second circuit connecting member”) 13 (FIGS. 1 to 3). The illustration of the first element connection and the second element connection is omitted.

  Any type of noise reduction element 11 may be used as long as it can reduce noise with the circuit configuration of the noise filter 1A. For example, a capacitor or a coil can be used as the noise reduction element 11. The filter circuit 10 includes two capacitors as the noise reduction element 11, and is configured so that the two capacitors can reduce noise (FIGS. 1 to 3).

  The first circuit connection member 12 and the second circuit connection member 13 are conductive members that electrically connect each other via the noise reduction element 11. The illustrated first circuit connection member 12 and second circuit connection member 13 are each formed of a conductive material such as a metal as a plate-like bus bar.

  Each of the first circuit connecting member 12 and the second circuit connecting member 13 has a plate-shaped main body 12a, 13a (FIGS. 1 to 3). In this filter circuit 10, the first circuit connecting member 12 and the second circuit connecting member 13 are arranged side by side so that the main bodies 12a and 13a are arranged on the same plane. In the filter circuit 10, the first element connection portion of the noise reduction element 11 is physically and electrically connected to the main body 12 a of the first circuit connection member 12, and the main body 13 a of the second circuit connection member 13 is connected. To the second element connection part of the noise reduction element 11 physically and electrically. As the connection form, for example, welding or soldering is applied according to the form of the first element connection section or the second element connection section of the noise reduction element 11.

  The first circuit connection member 12 has a first circuit-side connection body 12b that is indirectly electrically connected to the intermediate connection portion WEa1 of the first electric wire WE1 (FIGS. 1 to 3). The first circuit-side connector 12b is a component of the first electrical connection structure 30 as described later. Further, the second circuit connection member 13 has a second circuit-side connection body 13b for indirectly electrically connecting to the intermediate connection portion WEa2 of the second electric wire WE2 (FIGS. 1 to 3). The second circuit-side connector 13b is a component of the second electrical connection structure 40, as described later.

  In this exemplary filter circuit 10, two noise reduction elements 11 are covered with an insulating mold body 14 (FIGS. 1 to 3). The molded body 14 is a solidified product of the molding agent injected between the two noise reduction elements 11 and the main body 12a of the first circuit connection member 12 and the main body 13a of the second circuit connection member 13, and has two noise reduction elements. The connection part between the element 11 and the main body 12a and the connection part between the two noise reduction elements 11 and the main body 13a are also covered.

  Further, the noise filter 1A accommodates the filter circuit 10, the intermediate connection portion WEa1 of the first electric wire WE1, and the intermediate connection portion WEa2 of the second electric wire WE2 in the inner accommodating chamber 20a (FIG. 1). A housing 20 that pulls out each end side of the electric wire WE1 from the inner storage chamber 20a to the outside, and pulls out each end side of the second electric wire WE2 from the inner storage chamber 20a to the outside. (FIGS. 1 to 3). The housing 20 is formed of an insulating material such as a synthetic resin. The housing 20 forms a housing chamber 20a by fitting the first housing member 21 and the second housing member 22 together.

The first housing member 21 includes a main wall body 21a of the filter circuit 10 to the inner wall surface 21a ₁ is installed, and a peripheral wall body 21b-21e, which is erected from the periphery of the main wall 21a, (FIG. 2). The illustrated first housing member 21 includes a rectangular flat main wall member 21a and first to fourth peripheral wall members 21b vertically extending from four sides of the main wall member 21a. -21e. The first housing member 21 has an opening 21f formed by an edge of the first to fourth peripheral wall bodies 21b-21e.

This inner wall surface 21a ₁ side of the main wall 21a of the first housing member 21 is installed between the first circuit connecting member 12 and the second circuit connecting member 13 (FIGS. 1 and 2).

For example, a first circuit connecting member 12 the second circuit connecting member 13, respectively, mainly 12a, the wall surface of 13a placed placed on the inner wall surface 21a ₁ of Shukabetai 21a, the engagement mechanism (shown on the inner wall surface 21a ₁ (Abbreviated). Its engagement mechanism is, for example, is that of a lock mechanism for holding the main with the locking portion of the pawl portion or the like provided in a plurality of locations of the inner wall surface 21a ₁ of Shukabetai 21a. Further, here, the first housing member 21 is integrally formed with the first circuit connection member 12 and the second circuit connection member 13 so that the inner wall surface 21a of the main wall 21a of the first housing member 21 is formed. The first circuit connection member 12 and the second circuit connection member 13 may be provided on _one side. In this case, in the main bodies 12 a and 13 a of the first circuit connecting member 12 and the second circuit connecting member 13, the wall surface is exposed on the inner wall surface 21 a ₁ side of the main wall 21 a of the first housing member 21. .

The second housing member 22 has a main wall body 22 a that is opposed to the inner wall surface 21 a ₁ of the main wall body 21 a of the first housing member 21 at an interval. Close the opening. The illustrated second housing member 22 further has peripheral wall bodies 22b to 22e that stand upright from the peripheral edge of the main wall body 22a (FIG. 3). Here, a rectangular flat main wall body 22a and first to fourth peripheral wall bodies 22b to 22e each vertically extending from four sides of the main wall body 22a are provided. I have. The second housing member 22 has an opening 22f formed by an edge of the first to fourth peripheral wall bodies 22b to 22e.

  In the illustrated case 20, the first peripheral members 21b and 22b of the first and second case members 21 and 22 are arranged to face each other, and the respective second peripheral members 21c and 22c are opposed to each other. Are arranged facing each other, the third peripheral wall bodies 21d, 22d are arranged facing each other, and the fourth peripheral wall bodies 21e, 22e are arranged facing each other.

  In the illustrated case 20, the first electric wire WE1 and the second electric wire WE2 are accommodated in the accommodation room 20a in a side-by-side arrangement, and the first electric wire WE1 and the second electric wire WE2 run in the accommodation room 20a in parallel. . In the housing 20, the first peripheral wall 21b and the second peripheral wall 21c in the first housing member 21 in the opposed arrangement state, and the first peripheral wall 22b and the second peripheral wall in the second housing member 22 in the opposed arrangement state. The first electric wire WE1 and the second electric wire WE2 are drawn out from the body 22c.

The first peripheral wall bodies 21b, 22b of the first housing member 21 and the second housing member 22, respectively, have first outlets 21b ₁ , which allow one end of the first electric wire WE1 to be drawn outward. 22b having _1, and one of the second outlets 21b to draw the end side outward _2, 22b ₂ of the second electric wire WE2, (Figure 2 and Figure 3). Each of the first wall member 21b, in 22b, a first outlets 21b _1, 22b ₁ to each other is opposed, and the second outlets 21b _2, 22b ₂ between the to opposed.

The first housing member 21 each of the second circumferential wall member 21c of the second housing member 22, 22c, respectively, third outlets 21c ₁ to draw other end of the first wire WE1 outwardly, 22c having _1, fourth and outlets 21c _2, 22c ₂ which pulled the other end side of the second wire WE2 outwardly (FIG. 2 and FIG. 3). In each of the second peripheral wall bodies 21c and 22c, the third outlets 21c ₁ and 22c ₁ are arranged to face each other, and the fourth outlets 21c ₂ and 22c ₂ are arranged to face each other.

  The case 20 has a holder 23 for holding the noise filter 1A with respect to the installation target (FIG. 3). The holder 23 causes the installation object to hold the housing 20 by engaging with a counterpart holder (not shown) of the installation object. Here, the holding body 23 is provided on the outer wall surface of the main wall body 21 a of the first housing member 21.

  Further, the noise filter 1A includes a first electric connection structure 30 that electrically connects the intermediate connection portion WEa1 of the first electric wire WE1 to the first circuit connection member 12 of the filter circuit 10, and an intermediate portion of the second electric wire WE2. A second electrical connection structure 40 for electrically connecting the connection portion WEa2 to the second circuit connection member 13 of the filter circuit 10 (FIGS. 1 to 3). The first electrical connection structure 30 and the second electrical connection structure 40 are also accommodated in the accommodation room 20 a of the housing 20.

  The first electric connection structure 30 connects the first electric wires WE1 to each other such that the axial direction of the first electric wires WE1 is along the plane of the main body 12a of the first circuit connection member 12. Further, the second electric connection structure 40 connects the second electric wires WE2 so that the axial direction of the second electric wires WE2 is along the plane of the main body 13a of the second circuit connection member 13. Then, the first electric connection structure 30 and the second electric connection structure 40 are connected to the first electric wire WE1 and the first circuit connection member 12 such that the respective axial directions of the first electric wire WE1 and the second electric wire WE2 face the same direction. And the connection between the second electric wire WE2 and the second circuit connection member 13.

  The first electric connection structure 30 includes a first electric wire side connection body 31 physically and electrically connected to the intermediate connection portion WEa1 of the first electric wire WE1, a first electric wire side connection body 31, and a first circuit. A first circuit-side connector 32 physically and electrically connected to the connection member 12 (FIGS. 1 and 2).

  The first electric wire side connection body 31 of this example is formed as a single member (first electric wire side connection member) of a conductive material such as metal. For example, the first electric wire side connection body 31 is physically and electrically connected to the intermediate connection part WEa1 by caulking while winding the rectangular metal plate around the intermediate connection part WEa1 of the first electric wire WE1. It becomes a cylindrical member that is electrically connected. The illustrated first electric wire side connection body 31 is formed in a cylindrical shape (FIGS. 1 and 2).

  The first circuit-side connection body 32 is formed to be indirectly electrically connected to the intermediate connection part WEa1 of the first electric wire WE1. The illustrated first circuit-side connection body 32 electrically connects indirectly to the intermediate connection portion WEa1 by a resilient force applied indirectly to the intermediate connection portion WEa1 of the first electric wire WE1. More specifically, the first circuit-side connector 32 directly exerts an elastic force on the first wire-side connector 31, and the first circuit-side connector 32 exerts an elastic force on the first wire-side connector 31. The first electric wire WE1 is indirectly electrically connected to the intermediate connection portion WEa1. The first circuit side connection body 32 is provided on the first circuit connection member 12. The first circuit-side connection body 32 may be formed as a single member, or may be included as a part of a certain member.

  The former first circuit side connection body 32 is formed as a member different from the first circuit connection member 12. The first circuit side connection body 32 is provided on the first circuit connection member 12 by being physically and electrically connected to the first circuit connection member 12 by welding or the like.

  The latter first circuit-side connection body 32 is, for example, integrally formed together with the main body 12 a of the first circuit connection member 12, and is provided as one that the first circuit connection member 12 has. The illustrated first electrical connection structure 30 includes the latter first circuit-side connection body 32 (FIGS. 1 to 3). Here, the first circuit side connection body 12b of the first circuit connection member 12 is used as the first circuit side connection body 32 of the first electric connection structure 30.

  The first circuit-side connection body 32 (12b) is a cantilevered one-piece body having a free end raised from the main body 12a of the first circuit connection member 12 and has elasticity (hereinafter referred to as "elastic piece part"). ) 32a and a contact portion 32b provided at a free end of the elastic piece portion 32a and electrically connected directly to the first electric wire side connection body 31 (FIGS. 4 to 6). The first circuit-side connection body 32 generates an elastic force at the elastic piece portion 32a and causes the elastic force to act directly on the first wire-side connection body 31 from the contact portion 32b. The first electric wire side connection body 31 is physically and electrically connected. Therefore, the first circuit-side connector 32 can be indirectly electrically connected to the intermediate connection portion WEa1 of the first wire WE1 via the first wire-side connector 31.

  The second electric connection structure 40 includes a second electric wire side connection body 41 physically and electrically connected to the intermediate connection part WEa2 of the second electric wire WE2, and the second electric wire side connection body 41 and the second circuit. And a second circuit-side connector 42 physically and electrically connected to the connection member 13 (FIGS. 1 to 3).

  The illustrated second electric wire side connection body 41 is the same cylindrical tubular member as the first electric wire side connection body 31, and is formed by winding a rectangular metal plate around the intermediate connection portion WEa2 of the second electric wire WE2. By tightening, it is physically and electrically connected to the intermediate connection portion WEa2 (FIGS. 1 to 3).

  The second circuit-side connection body 42 is formed so as to be indirectly electrically connected to the intermediate connection part WEa2 of the second electric wire WE2. The illustrated second circuit-side connection body 42 is indirectly electrically connected to the intermediate connection portion WEa2 by the elastic force exerted indirectly on the intermediate connection portion WEa2 of the second electric wire WE2. Specifically, the second circuit-side connector 42 directly exerts an elastic force on the second wire-side connector 41, and the second circuit-side connector 42 exerts an elastic force on the second wire-side connector 41. The second electric wire WE2 is indirectly electrically connected to the intermediate connection portion WEa2. The second circuit-side connection body 42 is provided on the second circuit connection member 13. The second circuit-side connection body 42 may be formed as a single member as in the case of the first circuit-side connection body 32, or may be a member that a certain member has as a part of itself. There may be. The illustrated second circuit-side connection body 42 is integrally formed with the main body 13 a of the second circuit connection member 13, and is provided as a component of the second circuit connection member 13. Here, the second circuit connection member 13b of the second circuit connection member 13 is used as the second circuit connection member 42 of the second electrical connection structure 40.

  The second circuit-side connector 42 (13b) is formed in the same shape as the first circuit-side connector 32 (12b). Therefore, the second circuit-side connecting member 42 is a cantilevered one-piece member having a free end raised from the main body 13a of the second circuit connecting member 13 and has elasticity (hereinafter, referred to as an “elastic piece”). ) 42a and a contact portion 42b provided at a free end of the elastic piece portion 42a and directly electrically connected to the second electric wire side connection body 41 (FIGS. 4 to 6). The second circuit-side connecting member 42 generates an elastic force at the elastic piece portion 42a and applies the elastic force directly from the contact portion 42b to the second electric wire-side connecting member 41. It is physically and electrically connected to the second electric wire side connection body 41. Therefore, the second circuit-side connector 42 can be indirectly electrically connected to the intermediate connection portion WEa2 of the second electric wire WE2 via the second electric-wire-side connector 41.

Here, when the first housing member 21 and the second housing member 22 are fitted together, the resilience of the first circuit-side connection body 32 is different from that of the first circuit-connection member 12 and the first wire-side connection body. It is generated by held between the 31 inner wall surface 22a ₁ side of the main wall 22a of the inner wall surface 21a ₁ side of the main wall 21a of the first housing member 21 and the second housing member 22 (FIG. 5) . Therefore, in the first electric connection structure 30, the first electric wire side connection body 31 and the first circuit side connection body 32 (the first circuit side connection body 12 b of the first circuit connection member 12) are connected to the first housing member 21. And the second housing member 22 in the fitting direction.

The elasticity of the second circuit-side connecting member 42 is such that when the first housing member 21 and the second housing member 22 are fitted together, the second circuit-connecting member 13 and the second electric wire-side connecting member 41 It is generated by sandwiched bets and the inner wall surface 22a ₁ side of the inner wall surface 21a ₁ side of the main wall 21a of the first housing member 21 and the main wall 22a of the second housing member 22 (FIG. 5). Therefore, in the second electric connection structure 40, the second electric wire side connection body 41 and the second circuit side connection body 42 (the second circuit side connection body 13b of the second circuit connection member 13) are connected to the first housing member 21. And the second housing member 22 in the fitting direction.

In the noise filter 1 </ b> A, in order to generate elastic force between the first circuit-side connection body 32 and the second circuit-side connection body 42, the first housing member 21 and the second housing member 22 are fitted in the fitting direction. Te, the first wire-side connecting member 31 is clamped between the inner wall surface 22a ₁ side of the contact portion 32b of the first circuit-side connector 32 and the main wall 22a of the second housing member 22, and the second wire side thereby clamping the connecting member 41 between the inner wall surface 22a ₁ side of the contact portion 42b of the second circuit side connector 42 and the main wall 22a of the second housing member 22 (FIG. 5). That is, here, the fitting direction of the first housing member 21 and the second housing member 22 is determined by the holding direction (hereinafter, referred to as “electric wire”) with respect to the first wire side connection body 31 and the second wire side connection body 41. This is referred to as “clamping direction”).

The inner wall surface 22a ₁ of the main wall 22a of the second housing member 22, first indirectly sandwiching the intermediate connection portion WEa1 of the first wire WE1 between the contact portion 32b of the first circuit side connector 32 One holding body 24 and at least one second holding body 25 for indirectly holding the intermediate connection part WEa2 of the second electric wire WE2 between the contact part 24b of the second circuit side connection body 42 and the contact part 42b of the second circuit side connection body 42 (FIGS. 3, 5 and 6).

The first holding body 24 holds the first electric wire side connection body 31 between the first electric wire side connection body 31 and the contact portion 32b of the first circuit side connection body 32, and thereby the intermediate connection of the first electric wire WE1 with the first electric wire side connection body 32b. The unit WEa1 is indirectly held. The first Kyojitai 24 includes a piece body shaped piece portion 24a of the cantilever and lifted the free end side from the inner wall surface 22a ₁ of the main wall 22a of the second housing member 22, the freedom of the fragment portions 24a And a pressurizing portion 24b provided at the end and brought into contact with the first electric wire side connection body 31 to pressurize (FIGS. 3, 5, and 6). The piece 24a may have elasticity or may not have elasticity. Further, the pressing portion 24b is disposed so as to face the contact portion 32b in the wire clamping direction. Here, the pressurizing portion 24b and the contact portion 32b are each formed in a rectangular piece, and the first electric wire side connection body 31 is sandwiched between respective planes.

The second holding body 25 sandwiches the second wire-side connection body 41 between the second wire-side connection body 41 and the contact portion 42b of the second circuit-side connection body 42, thereby forming an intermediate connection between the second wire WE2 and the contact portion 42b. The portion WEa2 is indirectly held. The second Kyojitai 25 includes a piece body shaped piece portion 25a of the cantilever and lifted the free end side from the inner wall surface 22a ₁ of the main wall 22a of the second housing member 22, the freedom of the fragment portions 25a And a pressurizing portion 25b provided at an end and in contact with the second electric wire side connecting body 41 to pressurize the same (FIGS. 3, 5, and 6). The piece 25a may have elasticity or may not have elasticity. Further, the pressing portion 25b is disposed so as to face the contact portion 42b in the wire clamping direction. Here, each of the pressurizing portion 25b and the contact portion 42b is formed in a rectangular piece, and the second electric wire side connector 41 is sandwiched between the respective planes.

  In the noise filter 1A, the first electric wire WE1 is arranged in a space inside the first housing member 21 in a state where the first electric wire side connection body 31 is placed on the contact portion 32b, and the second electric wire WE1 is arranged. The second electric wire WE2 is arranged with the side connection body 41 placed on the contact portion 42b (FIG. 6). In the noise filter 1A, the second housing member 22 is fitted into the first housing member 21 (FIG. 6).

  When the first housing member 21 and the second housing member 22 are fitted together, a pressing force from the pressurizing portion 24b to the contact portion 32b acts on the first electric wire side connection body 31, Since the first electric wire side connection body 31 pushes and moves the contact portion 32b, the resilient force of the elastic piece 32a against the pushing force acts on the first electric wire side connection body 31 from the contact portion 32b. Further, when the first housing member 21 and the second housing member 22 are fitted together, a pressing force from the pressurizing portion 25b toward the contact portion 42b acts on the second electric wire side connection body 41. Since the second electric wire side connector 41 pushes and moves the contact portion 42b, the resilient force of the elastic piece portion 42a against the pushing force acts on the second electric wire side connector 41 from the contact portion 42b. Therefore, in the noise filter 1A, when the first housing member 21 and the second housing member 22 are fitted together, the first electric wire side connection body 31 is sandwiched between the pressing portion 24b and the contact portion 32b. Thus, the first wire-side connector 31 and the contact portion 32b are physically and electrically connected to each other, and the second wire-side connector 41 is sandwiched between the pressurizing portion 25b and the contact portion 42b. The second electric wire side connection body 41 and the contact portion 42b are physically and electrically connected. Therefore, in the noise filter 1A, the intermediate connection portion WEa1 of the first electric wire WE1 and the first circuit connection member 12 of the filter circuit 10 are electrically connected indirectly via the first electric wire side connection body 31, and The intermediate connection portion WEa2 of the second electric wire WE2 and the second circuit connection member 13 of the filter circuit 10 are electrically connected indirectly via the second electric wire side connection body 41.

  Meanwhile, in the conventional noise filter, as described above, an intermediate electric wire is interposed between the electric wire for noise reduction and the filter circuit. The intermediate wire has a large tolerance in length in consideration of the workability of assembling to a noise filter, a wiring route to a vehicle, and the like. For this reason, in the conventional noise filter, it is necessary to adjust the filter circuit characteristics (resonance point, noise reduction performance, and the like) in consideration of the noise component of the intermediate wire according to the length. However, in the noise filter 1A, the filter circuit 10 is interposed between the intermediate connection portion WEa1 of the first electric wire WE1 and the intermediate connection portion WEa2 of the second electric wire WE2 bundled on the main line WT of the wire harness WH. The filter circuit 10 is electrically connected to the respective intermediate connection parts WEa1 and WEa2. Therefore, the noise filter 1A does not need to adjust the filter circuit characteristics in consideration of the influence of the branch wire (intermediate wire) from the main line as in the related art. That is, the noise filter 1A is not affected by the intermediate electric wire.

  FIG. 7 shows a conceptual diagram of filter circuit characteristics in which frequency is set on the horizontal axis and noise reduction level is set on the vertical axis. In this figure, the broken line represents the required performance of noise reduction, the solid line represents the filter circuit characteristics of the noise filter 1A of the present embodiment, and the two-dot chain line represents the filter circuit characteristics of the conventional noise filter.

  The noise filter 1A may be wound around the main line WT with an adhesive tape or the like, for example, and held by the main line WT.

  Further, since the noise filter 1A electrically connects the filter circuit 10 to the intermediate connection portion WEa2 of the second electric wire WE2 whose one end is grounded, for example, a conductor that can be grounded around the main line WT. Is not present, and even if the object to be installed is formed of an insulating material such as a synthetic resin, the ground can be easily taken. That is, the conventional noise filter is grounded via the installation object by connecting the ground terminal to the installation object when the noise filter is attached to the conductive installation object. Therefore, in the conventional noise filter, the ground terminal protrudes from the housing to facilitate the work of fixing the ground terminal to the installation object. However, the noise filter 1A can be grounded without having such a ground terminal. Therefore, the noise filter 1A can be reduced in size and weight.

  Further, the noise filter 1A has an electrical connection structure between the intermediate connection portion WEa1 of the first electric wire WE1 and the first circuit side connection body 32 and an intermediate connection portion WEa2 of the second electric wire WE2 and the second circuit side. The electrical connection structure between the connector 42 and the connector 42 utilizes the resilience of the first circuit-side connector 32 and the second circuit-side connector 42. Therefore, in the noise filter 1A, each connection structure can be reduced in size as compared with a conventional connection structure in which male and female terminal portions are fitted. Therefore, the noise filter 1A can be downsized. Further, such a conventional connection structure may cause a rise in cost depending on the shape. However, since the noise filter 1A is a connection structure using elasticity, it is necessary to simplify the structure. Cost can be suppressed.

  Further, the noise filter 1A adopts such a connection structure by elasticity, thereby absorbing the dimensional variation of each component and applying a stable contact load to each of the intermediate connection portions WEa1 and WEa2. Can be done. The noise filter 1A is configured such that the first portion 24a of the first holding member 24 and the one portion 25a of the second holding member 25 have elasticity so that the first circuit-side connector 32 and the second circuit-side connector In combination with the elasticity of the component 42, even if the dimensional variation of each component becomes larger, the dimensional variation can be absorbed and a stable contact load can be applied to each intermediate connecting portion WEa2. With such characteristics, the noise filter 1 </ b> A can improve the energization quality between the first electric wire WE <b> 1 and the second electric wire WE <b> 2 and the filter circuit 10.

  Furthermore, the noise filter 1A employs a connection structure based on resilient force, so that electric wires having various outer diameters can be provided within the elastic range of the first circuit side connection body 32 and the second circuit side connection body 42. (First electric wire WE1, second electric wire WE2) can be electrically connected. When the noise filter 1A is provided with elasticity to the one part 24a of the first holding body 24 and the one part 25a of the second holding body 25, the noise filter 1A has various external parts within the elastic range including these parts. Electrical connection can be made to electric wires having a diameter (first electric wire WE1, second electric wire WE2). That is, the noise filter 1A can handle various electric wires (the first electric wire WE1 and the second electric wire WE2) having various outer diameters, and can improve versatility.

[Noise filter 1B]
Here, the noise filter 1 of this embodiment replaces the second housing member 22 having the first holding member 24 and the second holding member 25 with a first holding member 124 and a second holding member as described below. The holding body 125 may be configured as a noise filter 1B provided in the second housing member 122 (FIGS. 8 and 9). The noise filter 1B has the same effect as the noise filter 1A, and the first holding member 124 and the second holding member 125 can obtain the effects described later.

In the second housing member 122, the first holding body 24 is replaced with the first holding body 124 and the second holding body 25 is replaced with the second holding body 125 in the second housing member 22 shown above. Things. The second housing member 122 forms the housing 120 in which the accommodation chamber 120a is formed inward by being fitted to the first housing member 21 described above (FIG. 9). This inner wall surface 122a ₁ is the main wall 122a of the second housing member 122, providing a first Kyojitai 124 and a second Kyojitai 125 two by two (FIGS. 8 and 9).

  The first holding body 124 has, in addition to a piece 124a and a pressing part 124b similar to those of the first holding body 24 shown above, a locking projection 124c bulged from the pressing part 124b (FIG. 8 to 10). In addition, the second holding member 125 has a locking projection 125c bulged from the pressing portion 125b, in addition to the piece portion 125a and the pressing portion 125b similar to the second holding member 25 shown above. (FIGS. 8 to 10).

  In the noise filter 1 </ b> B, the first wire-side connecting body 31 is sandwiched between the pressing portions 124 b and the contact portions 32 b of the two first sandwiching bodies 124, and each of the two second sandwiching bodies 125. The second electric wire side connector 41 is sandwiched between the pressurizing portion 125b and the contact portion 42b (FIGS. 8 and 9). At this time, the contact portion 32b may be disposed so as to oppose only the pressing portion 124b of the one first holding member 124 in the wire holding direction, and the contact portions 32b may be provided on the respective pressing portions 124b of both the first holding members 124. Alternatively, they may be arranged to face each other in the wire holding direction. Similarly, the contact portion 42b may be disposed so as to face only the pressing portion 125b of the one second holding member 125 in the wire holding direction, and the respective pressing portions of both the second holding members 125 may be disposed. You may make it oppose in the electric wire clamping direction with respect to 125b.

  Further, the locking projection 124c of the first holding member 124 is formed so as to lock one end of the first electric wire side connection body 31 in the cylinder axis direction in the cylinder axis direction (FIG. 9). The locking projection 124c of the other first holding body 124 is formed so as to lock the other end of the first electric wire side connection body 31 in the cylinder axis direction in the cylinder axis direction (FIG. 9). That is, in the noise filter 1B, the first wire-side connector 31 is sandwiched from both ends in the cylinder axis direction using the two locking projections 124c. Further, the locking projection 125c of the second holding member 125 is formed so as to lock one end of the second electric wire side connection body 41 in the cylinder axis direction in the cylinder axis direction (FIG. 9). The locking projection 125c of the other second holding member 125 is formed so as to lock the other end of the second electric wire side connection body 41 in the cylinder axis direction in the cylinder axis direction (FIG. 9). That is, in the noise filter 1B, the second wire-side connecting body 41 is sandwiched from both ends in the cylinder axis direction using the two locking projections 125c. Thereby, in the noise filter 1B, the first wire-side connecting member 31 and the first wire-side connecting member 31 in the housing chamber 120a of the housing 120 are formed by the two locking protrusions 124c and the two locking protrusions 125c. The electric wire WE1, the second electric wire side connector 41, and the second electric wire WE2 can be positioned. Therefore, the noise filter 1 </ b> B can further improve the energization quality between the first electric wire WE <b> 1 and the second electric wire WE <b> 2 and the filter circuit 10.

[Noise filter 1C]
In addition, the noise filter 1 of the present embodiment replaces the second housing member 22 having the first holding member 24 and the second holding member 25 with the following first holding member 224 and second holding member. The body 225 may be configured as a noise filter 1C provided in the second housing member 222 (FIGS. 11 and 12). The noise filter 1C has the same effect as the noise filter 1A, and the first holding member 224 and the second holding member 225 can obtain the effects described later.

In the second housing member 222, the first holding body 24 is replaced with the first holding body 224 and the second holding body 25 is replaced with the second holding body 225 in the second housing member 22 shown above. Things. The second housing member 222 forms the housing 220 in which the accommodation chamber 220a is formed by fitting the first housing member 21 shown above (FIG. 12). This inner wall surface 222a ₁ of the main wall 222a is a second housing member 222, providing a first Kyojitai 224 and a second Kyojitai 225 two by two (11 and 12).

The first Kyojitai 224 is bulged from the inner wall surface 222a ₁ of Shukabetai 222a, a pressing portion 224b for pressing into contact with the first wire-side connecting member 31, and is bulged from the inner wall surface 222a ₁ And a locking projection 224c (FIGS. 11 and 12). The second Kyojitai 225 is bulged from the inner wall surface 222a ₁ of Shukabetai 222a, a pressing portion 225b for pressing into contact with the second wire-side connecting member 41, protruding from the inner wall surface 222a ₁ (FIGS. 11 and 12).

  In the noise filter 1 </ b> C, the first wire-side connecting body 31 is sandwiched between the pressing portions 224 b and the contact portions 32 b of the two first sandwiching bodies 224, and each of the two second sandwiching bodies 225. The second electric wire side connector 41 is sandwiched between the pressurizing portion 225b and the contact portion 42b. At this time, the contact portion 32b may be disposed so as to face only the pressing portion 224b of one of the first holding members 224 in the wire holding direction, and each of the pressing portions 224b of the first holding members 224 Alternatively, they may be arranged to face each other in the wire holding direction. Similarly, the contact portion 42b may be disposed so as to face only the pressing portion 225b of one of the second holding members 225 in the wire holding direction, and the respective pressing portions of both the second holding members 225 may be provided. 225b may be arranged to face the electric wire clamping direction.

  Further, the locking projection 224c of the first holding member 224 is formed so as to lock one end of the first electric wire side connection body 31 in the cylinder axis direction in the cylinder axis direction (FIG. 12). The locking projection 224c of the other first holding member 224 is formed so as to lock the other end of the first electric wire side connection body 31 in the cylinder axis direction in the cylinder axis direction (FIG. 12). That is, in the noise filter 1C, the first wire-side connecting body 31 is sandwiched from both ends in the cylinder axis direction using the two locking projections 224c. Further, the locking projection 225c of the second holding member 225 is formed so as to lock one end of the second electric wire side connection body 41 in the cylinder axis direction in the cylinder axis direction (FIG. 12). The locking projection 225c of the other second holding body 225 is formed so as to lock the other end of the second electric wire side connection body 41 in the cylinder axis direction in the cylinder axis direction (FIG. 12). That is, in the noise filter 1C, the two electric wire side connection bodies 41 are sandwiched from both ends in the cylinder axis direction using the two locking projections 225c. Thus, in the noise filter 1C, the first wire-side connecting member 31 and the first wire-side connecting member 31 in the housing chamber 220a of the housing 220 are formed by the two locking protrusions 224c and the two locking protrusions 225c. The electric wire WE1, the second electric wire side connector 41, and the second electric wire WE2 can be positioned. Therefore, the noise filter 1 </ b> C can further improve the energization quality between the first electric wire WE <b> 1 and the second electric wire WE <b> 2 and the filter circuit 10.

[Noise filter 1D]
In the noise filter 1 of the present embodiment, the first electric connection structure 30 having the first circuit side connection body 32 (12b) and the second electric connection structure 40 having the second circuit side connection body 42 (13b) are provided. Alternatively, the noise filter 1D may be provided with a first electric connection structure 330 having a first circuit-side connection body 332 and a second electric connection structure 340 having a second circuit-side connection body 342 as described below. Good (FIGS. 13 and 14). The noise filter 1D has the same effects as the noise filter 1A, and the first circuit-side connection body 332 and the second circuit-side connection body 342 can obtain the effects described later.

The first circuit-side connection body 332 is provided on a first circuit connection member 312 having a main body 312a and a first circuit-side connection body 312b, as in the above-described example, and the first circuit-side connection body 312b is provided. Used (FIGS. 13 and 14). The first circuit-side connector 332 has the same elastic piece 332a as the first circuit-side connector 32 (12b), and is provided at a free end of the elastic piece 332a. It has a contact portion 332b for making an electrical connection directly to 31 (FIGS. 13 to 15). Contact portion 332b of this example, the previous and fragment portions 332b ₁ of the same rectangle and the contact portion 32b to contact with the outer peripheral surface of the first wire-side connector 31, to protrude from the support sections 332b _1, first wire side having, as two locking projections 332b ₂ sandwiching in the tube axis direction two ends of the cylindrical axis direction of the connector 31 (FIGS. 13 to 15). The illustrated the locking projection portion 332b _2, is provided with arcuate cutouts 332b ₂₁ to intermediate connecting portion WEa1 of the first wire WE1 is inserted (Figure 15). The first circuit-side connection body 332 forms a first electric connection structure 330 by being paired with the first wire-side connection body 31.

The second circuit-side connector 342 is provided on a second circuit-connecting member 313 having a main body 313a and a second circuit-side connector 313b, as in the previous example, and the second circuit-side connector 313b is provided. Used (FIGS. 13 and 14). The second circuit-side connector 342 has the same elastic piece 342a as the previous circuit-side connector 42 (13b), and is provided at a free end of the elastic piece 342a. It has a contact portion 342b for making an electrical connection directly to the contact 41 (FIGS. 13 to 15). Contact portion 342b of this example, the previous and fragment portions 342b ₁ of the same rectangle and the contact portion 42b is brought into contact with the outer peripheral surface of the second wire-side connector 41, to protrude from the support sections 342b _1, second wire-side having, as two locking projections 342b ₂ sandwiching in the tube axis direction two ends of the cylindrical axis direction of the connector 41 (FIGS. 13 to 15). The illustrated the locking projection portion 342b _2, is provided with arcuate cutouts 342b ₂₁ to intermediate connecting portion WEa2 of the second wire WE2 is inserted (Figure 15). The second circuit-side connection body 342 forms a second electric connection structure 340 in a pair with the second electric wire-side connection body 41.

The noise filter. 1D, the two locking projections 332b ₂ and two of the locking projections 342b _2, accommodating chamber first wire-side connecting member 31 and the first electric wire in 20a WE1 of the housing 20 and The positioning of the second electric wire side connection body 41 and the second electric wire WE2 can be performed. Therefore, the noise filter 1 </ b> D can further improve the quality of energization between the first electric wire WE <b> 1 and the second electric wire WE <b> 2 and the filter circuit 10.

[Modification of Noise Filter 1A]
By the way, in the noise filter 1A shown above, although not shown, each of the contact portions 32b and 42b is formed as a terminal portion, and the first wire side connection body 31 and the second wire side connection body 41 are respectively provided with terminals. A part (not shown) may be provided. Each of the terminal portions has a terminal shape of either male or female, and for example, the terminal shape described in Patent Document 2 described above may be used. In the noise filter 1A in this case, the contact part 32b as the terminal part and the terminal part of the first electric wire side connector 31 are fitted together, and the contact part 42b as the terminal part and the second electric wire side connector 41 are fitted. And the first electric wire side connector 31 and the first electric wire WE1 and the second electric wire WE1 in the housing chamber 20a of the housing 20 by ensuring the electrical connection therebetween. The positioning of the electric wire side connection body 41 and the second electric wire WE2 can be performed. Therefore, the noise filter 1 </ b> A can further improve the quality of conduction between the first electric wire WE <b> 1 and the second electric wire WE <b> 2 and the filter circuit 10.

[Noise filter 1E]
The noise filter 1 of the present embodiment is provided with the following first electric connection structure 430 and second electric connection structure 440 instead of the first electric connection structure 30 and the second electric connection structure 40 described above. It may be configured as a noise filter 1E (FIG. 16). The noise filter 1E has the same effects as the noise filter 1A, and the first electric connection structure 430 and the second electric connection structure 440 can obtain the effects described later.

  The first electrical connection structure 430 includes the first circuit-side connector 32 without the first wire-side connector 31. The first electric connection structure 430 is coupled to the first holding member 24 of the second housing member 22 and, together with the pressing portion 24b and the contact portion 32b of the first circuit-side connection member 32, forms the first electric wire WE1. Of the intermediate connection portion WEa1.

  That is, the first circuit-side connection body 32 of this example is formed so as to be directly electrically connected to the intermediate connection part WEa1 of the first electric wire WE1. The first circuit side connection body 32 is electrically connected directly to the intermediate connection part WEa1 by the elastic force directly applied to the intermediate connection part WEa1 of the first electric wire WE1. Further, the first holding body 24 of this example is formed so as to directly hold the intermediate connection part WEa1 of the first electric wire WE1 with the contact part 32b of the first circuit side connection body 32.

  The second electric connection structure 440 does not have the second electric wire side connection body 41 but has the second circuit side connection body 42. The second electric connection structure 440, together with the second holding member 25 of the second housing member 22, uses the pressing portion 25b and the contact portion 42b of the second circuit-side connection member 42 to form the second electric wire WE2. Of the intermediate connection portion WEa2.

  That is, the second circuit-side connector 42 of this example is formed as a member that is directly electrically connected to the intermediate connector WEa2 of the second electric wire WE2. The second circuit-side connection body 42 is electrically connected directly to the intermediate connection part WEa2 by the elastic force directly applied to the intermediate connection part WEa2 of the second electric wire WE2. The second holding body 25 of this example is formed so as to directly hold the intermediate connection part WEa2 of the second electric wire WE2 between the second holding part 25 and the contact part 42b of the second circuit-side connection body 42.

  Here, this noise filter 1E is desirably used when the first electric wire WE1 and the second electric wire WE2 each having a single wire such as a round conductor as the core wire WEa are applied. Because, in each of the intermediate connection portions WEa1 and WEa2, if the core wire WEa is an aggregate of a plurality of strands, the core wire WEa is sandwiched between the pressing portions 24b and 25b and the contact portions 32b and 42b. Since there is a possibility that the individual wires may be separated, there is a possibility that the pressing force from the pressurizing portions 24b and 25b and the elastic force from the contact portions 32b and 42b cannot be received. That is, when the core wire WEa is an aggregate of a plurality of strands, an appropriate contact load cannot be applied to each of the intermediate connection parts WEa1 and WEa2, and each of the intermediate connection parts WEa1 and WEa2 and the filter circuit This is because there is a possibility that energization with the power supply 10 may not be performed properly. However, even if the core wire WEa is an aggregate of a plurality of wires, the first wires WE1 and the second wires WE2 are formed by welding the plurality of wires at the intermediate connection portions WEa1 and WEa2 by thermocompression bonding or the like. By fixing them together (FIG. 16), the present invention can be applied to the noise filter 1E without the first electric wire side connection body 31 and the second electric wire side connection body 41.

  As described above, since the number of parts of the noise filter 1E is reduced in the first electric connection structure 430 and the second electric connection structure 440, it is possible to reduce the weight, improve the assembly workability, and reduce the cost. it can.

[Noise filter 1F]
The noise filter 1 of the present embodiment is the following in place of the second housing member 22 having the first holding member 24 and the second holding member 25, the first electrical connection structure 30, and the second electrical connection structure 40. The second housing member 522 having the first holding member 524 and the second holding member 525, the first electric connection structure 530, and the noise filter 1F provided with the second electric connection structure 540 (FIG. 17) And FIG. 18). The noise filter 1F has the same effect as the noise filter 1A, and is described later by the first holding member 524 and the second holding member 525, and the first electric connection structure 430 and the second electric connection structure 440. The effect can be obtained.

In the second housing member 522, the first holding body 24 is replaced with the first holding body 524 and the second holding body 25 is replaced with the second holding body 525 in the second housing member 22 shown above. Things. The second housing member 522 forms a housing 520 in which a housing chamber 520a is formed inward by being fitted to the first housing member 21 described above (FIG. 18). This inner wall surface 522a ₁ of the main wall 522a is a second housing member 522, at least one each provided with first Kyojitai 524 and a second Kyojitai 525 (FIGS. 17 and 18). Here, one first holding body 524 and one second holding body 525 are provided.

  The first holding body 524 has a piece 524a similar to the first holding body 24 shown above, and is provided at a free end of the piece 524a, and is brought into contact with the intermediate connection part WEa1 of the first electric wire WE1 to be added. It has a pressing portion 524b for pressing (FIGS. 17 and 18). The pressing portion 524b is formed in a U-shape. The pressurizing portion 524b has an opening on the side of the intermediate connection portion WEa1 of the first electric wire WE1, and allows the intermediate connection portion WEa1 to be inserted inward from the opening. The second holding member 525 has a piece 525a similar to that of the second holding body 25 described above, and is provided at a free end of the piece 525a to make contact with the intermediate connection part WEa2 of the second electric wire WE2. And a pressurizing section 525b for pressurizing (FIGS. 17 and 18). The pressing portion 525b is formed in a U-shape (FIG. 19). The pressurizing portion 525b has an opening at the side of the intermediate connection portion WEa2 of the second electric wire WE2, and allows the intermediate connection portion WEa2 to be inserted inward from the opening.

  The first electric connection structure 530 includes the first circuit-side connection body 532 without the first wire-side connection body 31 (FIGS. 17 and 18). The first circuit-side connector 532 is provided on a first circuit-connection member 512 having a main body 512a and a first circuit-side connector 512b, as in the above-described example. (FIGS. 17 and 18). The first circuit-side connector 532 has an elastic piece 532a similar to that of the first circuit-side connector 32 (12b), and is provided at a free end of the elastic piece 532a. It has a contact portion 532b for directly electrically connecting to the connection portion WEa1 (FIGS. 17 and 18). This example contact portion 532b is formed in a U-shape (FIG. 19). The contact portion 532b has an opening on the side of the intermediate connection portion WEa1 of the first electric wire WE1, and the intermediate connection portion WEa1 is inserted inward from the opening.

  The second electric connection structure 540 includes the second circuit-side connection body 542 without the second electric wire-side connection body 41 (FIGS. 17 and 18). The second circuit-side connecting member 542 is provided on a second circuit-connecting member 513 having a main body 513a and a second circuit-side connecting member 513b, as in the previous example. (FIGS. 17 and 18). The second circuit-side connector 542 has an elastic piece 542a similar to that of the second circuit-side connector 42 (13b), and is provided at a free end of the elastic piece 542a. It has a contact portion 542b for directly electrically connecting to the connection portion WEa2 (FIGS. 17 and 18). This example contact portion 542b is formed in a U-shape (FIG. 19). The contact portion 542b has an opening on the side of the intermediate connection portion WEa2 of the second electric wire WE2, and allows the intermediate connection portion WEa2 to be inserted inward from the opening.

  That is, the illustrated first circuit-side connection body 532 is formed so as to be directly electrically connected to the intermediate connection portion WEa1 of the first electric wire WE1. The first circuit-side connection body 532 is electrically connected directly to the intermediate connection part WEa1 by the elastic force directly applied to the intermediate connection part WEa1 of the first electric wire WE1. Further, the first holding member 524 in this example is formed so as to directly hold the intermediate connection portion WEa1 of the first electric wire WE1 between the first holding member 524 and the contact portion 532b of the first circuit-side connection member 532. In addition, the second circuit-side connection body 42 of this example is formed so as to be directly electrically connected to the intermediate connection part WEa2 of the second electric wire WE2. The second circuit-side connection body 42 is electrically connected directly to the intermediate connection part WEa2 by the elastic force directly applied to the intermediate connection part WEa2 of the second electric wire WE2. The second holding body 25 of this example is formed so as to directly hold the intermediate connection part WEa2 of the second electric wire WE2 with the contact part 42b of the second circuit-side connection body 42.

  When the first housing member 21 and the second housing member 22 are fitted together, the pressurizing portion 524b and the contact portion 532b respectively connect the intermediate connection portion WEa1 of the first electric wire WE1 to the inside of each U-shape. 20 (FIG. 20), and are arranged to face each other in the axial direction of the intermediate connecting portion WEa1 (FIG. 18). The pressing portion 524b and the contact portion 532b are arranged close to each other in the axial direction. As a result, the pressurizing portion 524b and the contact portion 532b sandwich the intermediate connection portion WEa1 in the direction in which the electric wire is held by the respective U-shaped bottom portions, and apply a stable contact load to the intermediate connection portion WEa1. Can be. Further, the pressurizing portion 524b and the contact portion 532b can surround the intermediate connection portion WEa1 of the first electric wire WE1 inside each U-shape (FIG. 20). Therefore, this noise filter 1F can be applied even if the core wire WEa is the single first wire WE1, and the variation of the wires can be suppressed, so that the core wire WEa is a set of a plurality of wires. The present invention can be applied to the first electric wire WE1 which is a body. Further, the first electric wire WE1 may be formed by welding and solidifying a plurality of element wires in the intermediate connection portion WEa1 shown above by thermocompression bonding or the like.

  Further, when the first casing member 21 and the second casing member 22 are fitted together, the pressurizing portion 525b and the contact portion 542b form an intermediate connection portion WEa2 of the second electric wire WE2 inside each U-shape. Are inserted through the respective openings (FIG. 20), and are arranged so as to face each other in the axial direction of the intermediate connection portion WEa2 (FIG. 18). The pressing portion 525b and the contact portion 542b are arranged close to each other in the axial direction. As a result, the pressurizing portion 525b and the contact portion 542b sandwich the intermediate connection portion WEa2 in the direction in which the electric wire is held by the respective U-shaped bottom portions, and apply a stable contact load to the intermediate connection portion WEa2. Can be. Further, the pressurizing portion 525b and the contact portion 542b can surround the intermediate connection portion WEa2 of the second electric wire WE2 inside each U-shape (FIG. 20). Therefore, the noise filter 1F can be applied even if the core wire WEa is the single second wire WE2, and the variation of the wires can be suppressed, so that the core wire WEa is a set of a plurality of wires. The present invention can be applied to the second electric wire WE2 which is a body. Further, the second electric wire WE2 may be formed by welding and solidifying a plurality of strands of the intermediate connection part WEa2 shown above by thermocompression bonding or the like.

  As described above, in the noise filter 1F, since the number of parts is reduced in the first electrical connection structure 530 and the second electrical connection structure 540, it is possible to reduce the weight, improve the workability of assembly, and reduce the cost. it can.

[Modification of Noise Filter 1A]
By the way, although not shown, the noise filter 1 </ b> A shown above may have pressure contact blades that are opposed to each other with a space therebetween, and the respective contact portions 32 b and 42 b may be formed. The press-contact blade of the contact portion 32b cuts into the sheath WEb of the first electric wire WE1 inserted therebetween, and cuts into the core wire WEa of the first electric wire WE1. Therefore, the contact portion 32b can press-fix the first wire WE1 in an electrically connected state by the respective press-contact blades. In addition, the press-contact blade of the contact portion 42b cuts the sheath WEb of the second electric wire WE2 inserted therebetween, and cuts into the core wire WEa of the second electric wire WE2. Therefore, the contact portion 42b can press-fix the second electric wire WE2 in an electrically connected state by the respective press-contact blades.

  In this case, the pieces 32a and 42a of the first and second circuit-side connectors 32 and 42 may have elasticity or may not have elasticity. Further, in this case, the second housing member 22 may have the first holding member 24 or the second holding member 25, or may not have the first holding member 24 or the second holding member 25. Good. However, since the noise filter 1A includes the first holding member 24 and the second holding member 25, the press-contact fixed state is easily maintained.

  As described above, the noise filter 1 (1A, 1B, 1C, 1D, 1E, 1F) of the present embodiment includes the intermediate connection portion WEa1 of the first electric wire WE1 bundled with the trunk WT of the wire harness WH and the first connection. The filter circuit 10 is interposed between the two electric wires WE2 and the intermediate connection part WEa2, and the filter circuit 10 is electrically connected to the respective intermediate connection parts WEa1 and WEa2. Therefore, the noise filter 1 (1A, 1B, 1C, 1D, 1E, 1F) of the present embodiment is a simple one that does not require the adjustment of the filter circuit characteristics in consideration of the noise component of the intermediate wire as in the related art. It has become. Furthermore, since the noise filter 1 (1A, 1B, 1C, 1D, 1E, 1F) of the present embodiment does not require a ground terminal, it is possible to reduce the size and weight of the physique. Furthermore, the noise filter 1 (1A, 1B, 1C, 1D, 1E, 1F) of the present embodiment utilizes elasticity for electrical connection between the first electric wire WE1 and the second electric wire WE2 and the filter circuit 10. It is possible to reduce the size of the physique and to suppress the rise in cost, and it is highly versatile and can be used for wires of various outer diameters (first wire WE1, second wire WE2). Becomes Furthermore, the noise filter 1 (1A, 1B, 1C, 1D, 1E, 1F) of the present embodiment absorbs the dimensional variation of each component by such a connection structure utilizing elasticity, and the first electric wire By applying a stable contact load to the intermediate connection part WEa1 of the WE1 and the intermediate connection part WEa2 of the second electric wire WE2, it is possible to improve the energization quality. Further, the wire harness WH of the present embodiment includes such a noise filter 1 (1A, 1B, 1C, 1D, 1E, 1F), and the noise filter 1 (1A, 1B, 1C, 1D, 1E, 1F) can be obtained.

[Modification 1]
Reference numeral 2 in FIGS. 21 and 22 indicates a noise filter according to the present modification. The noise filter 2 is provided with a plurality of filter circuits electrically connected to each other, and one of the filter circuits is provided with an intermediate connection portion WEa1 of the first electric wire WE1 and an intermediate connection portion WEa2 of the second electric wire WE2. And a noise reduction device for electrically connecting the two. Each of the filter circuits may have the same filter circuit characteristics or a combination of a plurality of types of filter circuit characteristics.

[Noise filter 2A]
Hereinafter, a noise filter 2A as an example of the noise filter 2 will be described (FIGS. 21 and 22).

  The noise filter 2A includes a plurality of filter circuits 610 for reducing a noise component (FIGS. 21 and 22), electrically connects the respective filter circuits 610, and connects one of the filter circuits 610 to the second one. The intermediate connection portion WEa1 of the first electric wire WE1 is electrically connected to the intermediate connection portion WEa2 of the second electric wire WE2. The plurality of filter circuits 610 are roughly classified into one main filter circuit 610A electrically connected to each of the intermediate connection parts WEa1 and WEa2, and the other sub filter circuits 610B (FIG. 21 and FIG. 22). At least one sub filter circuit 610B is connected to the main filter circuit 610A.

  The filter circuit 610 includes at least one noise reduction element 11 for reducing a noise component, a conductive first circuit connection member 612 to which a first element connection portion of the noise reduction element 11 is electrically connected, And a conductive second circuit connection member 613 to which the second element connection portion of the element 11 is electrically connected (FIGS. 21 and 22).

  This exemplary filter circuit 610 includes two capacitors as the noise reduction element 11, and is configured so that noise can be reduced with the two capacitors. Although not shown, the two noise reduction elements 11 are covered with an insulating mold. The molded body may be formed so as to collectively cover the respective noise reduction elements 11 of the two or more filter circuits 610.

  The first circuit connection member 612 and the second circuit connection member 613 are the same conductive members as the first circuit connection member 12 and the second circuit connection member 13, and each have a plate shape made of a conductive material such as metal. It is molded as a bus bar. In this example, the first circuit connection member 612 and the second circuit connection member 613 are each formed into a flat plate shape. In this filter circuit 610, the first circuit connection member 612 and the second circuit connection member 613 are arranged side by side on the same plane. In the filter circuit 610, the first element connection portion of the noise reduction element 11 is physically and electrically connected to the first circuit connection member 612, and the noise reduction element 11 is connected to the second circuit connection member 613. The second element connection part is physically and electrically connected.

  The noise filter 2A includes a housing 620 that houses the filter circuit 610 (FIGS. 21 and 22). The housing 620 is formed of an insulating material such as a synthetic resin. The housing 620 is formed in a box shape having a main wall body (not shown) on which the filter circuit 610 is installed and peripheral wall bodies 621b to 621e erected from the periphery of the main wall body. The space inside is used as the accommodation room 620a of the filter circuit 610 (FIG. 21). The example housing 620 includes a rectangular flat main wall, and first to fourth peripheral wall bodies 621b to 621e vertically extending from four sides of the main wall. Have.

  Further, the noise filter 2A includes a first electric connection structure 630 that electrically connects the intermediate connection portion WEa1 of the first electric wire WE1 to the first circuit connection member 612 of the main filter circuit 610A, and a second electric wire WE2. A second electrical connection structure 640 for electrically connecting the intermediate connection portion WEa2 to the second circuit connection member 613 of the main filter circuit 610A (FIGS. 21 and 22).

  The first electric connection structure 630 of the present modification is formed of a conductive material such as a metal as one connection member (hereinafter, referred to as “first electric connection member”) 630A. The first electric connection member 630A includes a first electric wire side connection portion 631 physically and electrically connected to the intermediate connection portion WEa1 of the first electric wire WE1, and a first circuit connection member 612 of the main filter circuit 610A. And a first circuit side connection portion 632 that is physically and electrically connected to the first circuit side (FIGS. 21 to 23).

  The first electric wire side connection portion 631 is formed as having, for example, pressure-contact blades that are opposed to each other with a space therebetween. The press-contact blade of the first electric wire side connection portion 631 cuts the sheath WEb of the first electric wire WE1 inserted between the first electric wire WE1 and the first electric wire WE1 so as to cut into the core wire WEa of the first electric wire WE1. Press and fix in the connected state.

  The first circuit side connection portion 632 is formed in a shape that is detachable from the first circuit connection member 612 of the main filter circuit 610A. The first circuit-side connection portion 632 is physically and electrically connected to the first circuit connection member 612 by sandwiching the first circuit connection member 612, for example. The illustrated first circuit-side connecting portion 632 has a single piece-shaped first piece 632a and a second piece 632b in which the planes are opposed to each other with a space therebetween (FIG. 23). The first piece portion 632a is disposed so as to face one plane of the first circuit connection member 612. The second piece 632b is arranged to face the other flat surface of the first circuit connection member 612. In the first circuit side connection portion 632, a contact portion 632c protruding toward the first circuit connection member 612 is provided on at least one of the first piece portion 632a and the second piece portion 632b (FIG. 23). . In this example, a contact portion 632c is provided on the first piece portion 632a, and the first circuit connection member 612 is sandwiched between the contact portion 632c and the plane of the second piece portion 632b to form the first circuit side connection portion 632 in the first direction. One circuit connection member 612 is physically and electrically connected. In this example, an arc-shaped portion obtained by bending a part of the first piece 632a in an arc shape is used as the contact portion 632c. However, the contact portion 632c may use a bulging portion that bulges from the first piece portion 632a into, for example, a hemispherical shape.

  In the first electric connection member 630A, the first circuit connection member 612 is inserted between the first piece 632a and the second piece 632b along the direction orthogonal to the direction in which the adjacent filter circuits 610 are arranged. Go. In this way, the first electric connection member 630A causes the first circuit side connection portion 632 to sandwich the first circuit connection member 612. Further, the first electric connection member 630A can also extract the first circuit side connection portion 632 from the first circuit connection member 612.

  For example, the first electric connection member 630A first connects the intermediate connection portion WEa1 of the first electric wire WE1 to the first electric wire side connection portion 631, and then connects the first circuit connection member 612 to the first circuit connection portion 632. In between.

  The illustrated first electrical connection member 630A extends along the plane of the first circuit connection member 612 while sandwiching the first circuit connection member 612, and extends along the extending direction. The first electric wire side connection portion 631 and the first circuit side connection portion 632 are arranged. The illustrated first electric wire side connection portion 631 is formed so as to extend the axis of the first electric wire WE1 in a direction orthogonal to the extending direction and in a direction along the plane of the first circuit connection member 612. . However, the first electrical connection member 630A is bent by providing an arc-shaped portion or a bent portion between the first wire-side connection portion 631 and the first circuit-side connection portion 632 to bend the first wire-side connection portion 631. It may be offset with respect to the one-circuit connection member 612. Thus, the noise filter 2A and the wire harness WH can take measures against interference with peripheral components in a state where the noise filter 2A and the wire harness WH are assembled to the vehicle body.

Here, the first circuit-side connection portion 632 in this example sandwiches the first circuit connection member 612 in the accommodation room 620 a of the housing 620. Therefore, the first electric wire side connection portion 631 is disposed outside the housing 620 on the main wall body and the third peripheral wall body 621d of the housing 620, and the first circuit side connection portion 632 is located inside the accommodation room 620a. the notch 621d ₁ for accommodating the is provided (Figure 21).

  The second electric connection structure 640 of the present modification is formed by forming one connection member (hereinafter, referred to as “second electric connection member”) 640A with a conductive material such as a metal. The second electric connection member 640A includes a second electric wire side connection portion 641 physically and electrically connected to the intermediate connection portion WEa2 of the second electric wire WE2, and a second circuit connection member 613 of the main filter circuit 610A. And a second circuit side connection portion 642 that is physically and electrically connected to the second circuit side (FIGS. 21 to 23).

  The second electric wire side connection portion 641 is formed as having, for example, pressure contact blades that are spaced apart and opposed to each other, like the first electric wire side connection portion 631.

  The second circuit side connection portion 642 is formed as a shape that is detachable from the second circuit connection member 613 of the main filter circuit 610A. The second circuit-side connection portion 642 is physically and electrically connected to the second circuit connection member 613 by sandwiching the second circuit connection member 613, for example. The illustrated second circuit-side connecting portion 642 has a one-piece shaped first piece 642a and a second piece 642b in which planes are opposed to each other with a space therebetween (FIG. 23). The first piece portion 642a is arranged to face one plane of the second circuit connection member 613. The second piece 642b is arranged to face the other plane of the second circuit connection member 613. In the second circuit side connection portion 642, at least one of the first piece portion 642a and the second piece portion 642b is provided with a contact portion 642c protruding toward the second circuit connection member 613 (FIG. 23). . In this example, a contact portion 642c is provided on the first piece portion 642a, and the second circuit connection member 613 is sandwiched between the contact portion 642c and the plane of the second piece portion 642b to form the second circuit side connection portion 642 in the first The two-circuit connection member 613 is physically and electrically connected. In this example, an arc-shaped portion obtained by bending a part of the first piece portion 642a in an arc shape is used as the contact portion 642c. However, the contact portion 642c may use a bulging portion that bulges from the first piece portion 642a into, for example, a hemispherical shape.

  In the second electric connection member 640A, the second circuit connection member 613 is inserted between the first piece 642a and the second piece 642b along the direction orthogonal to the direction in which the adjacent filter circuits 610 are arranged. Go. In this way, the second electric connection member 640A causes the second circuit connection member 642 to sandwich the second circuit connection member 613. Further, in the second electric connection member 640A, the second circuit side connection portion 642 can be removed from the second circuit connection member 613.

  For example, the second electric connection member 640A first connects the intermediate connection portion WEa2 of the second electric wire WE2 to the second electric wire side connection portion 641, and then connects the second circuit connection member 613 to the second circuit connection portion 642. In between.

  The illustrated second electric connection member 640A extends along the plane of the second circuit connection member 613 while sandwiching the second circuit connection member 613, and extends along the extending direction. The second electric wire side connection portion 641 and the second circuit side connection portion 642 are arranged. The extending direction of the second electric connecting member 640A is opposite to the extending direction of the first electric connecting member 630A. The illustrated second electric wire side connection portion 641 is formed so that the axis of the second electric wire WE2 extends along the direction orthogonal to the extending direction and along the plane of the second circuit connection member 613. . However, the second electric connection member 640A is bent by providing an arc-shaped portion or a bent portion between the second wire-side connection portion 641 and the second circuit-side connection portion 642 to bend the second wire-side connection portion 641. It may be offset with respect to the two-circuit connecting member 613. Thus, the noise filter 2A and the wire harness WH can take measures against interference with peripheral components in a state where the noise filter 2A and the wire harness WH are assembled to the vehicle body.

Here, the illustrated second circuit-side connection portion 642 sandwiches the second circuit connection member 613 in the housing chamber 620a of the housing 620. Therefore, the second electric wire side connection portion 641 is disposed outside the housing 620 on the main wall body and the fourth peripheral wall body 621e of the housing 620, and the second circuit side connection portion 642 is placed in the housing chamber 620a. the notch 621 e ₁ for accommodating the is provided (Figure 21).

  The illustrated first electrical connection member 630A and second electrical connection member 640A are each formed by press-molding a metal plate, and use the same components.

  In the noise filter 2A, the filter circuits 610 are connected such that the first circuit connection members 612 and the second circuit connection members 613 of all the filter circuits 610 are arranged on the same plane. In the illustrated noise filter 2A, all the filter circuits 610 are arranged in series along the respective axial directions of the first electric wire WE1 and the second electric wire WE2.

  The noise filter 2A is capable of physically and electrically connecting the first circuit connection members 612 of the adjacent filter circuits 610 (that is, directly electrically connecting), and the adjacent filter circuits 610. And a first connector 651 capable of separating the first circuit connecting members 612 from each other (FIGS. 21 to 23). Further, the noise filter 2A can physically and electrically connect the second circuit connecting members 613 of the adjacent filter circuits 610 (that is, directly electrically connect) to each other. A second connector 652 capable of separating between the second circuit connecting members 613 of the circuit 610 is provided (FIGS. 21 to 23). The first connection body 651 and the second connection body 652 are formed of a conductive material such as a metal.

  The first connection body 651 may be one member (first connection member) formed so as to be detachable from each of the first circuit connection members 612 of the adjacent filter circuits 610. Similarly, the second connection body 652 may be one member (second connection member) formed so as to be detachable from the two second circuit connection members 613 to be connected. Good. The illustrated first connector 651 is provided on one of the first circuit connection members 612 of each of the adjacent filter circuits 610, and is formed so as to be electrically connectable to and detachable from the other of the first circuit connection members 612. I do. In addition, the second connector 652 of this example is provided on one of the second circuit connection members 613 of the adjacent filter circuits 610, and is electrically connectable to and detachable from the other of the second circuit connection members 613. Formed. In this example noise filter 2A, a first connector 651 is provided on one first circuit connecting member 612 of adjacent filter circuits 610, and a second connecting body 613 is provided on a second circuit connecting member 613 of one of the filter circuits 610. A connector 652 is provided.

  The first connector 651 has a single piece 651a and a second piece 651b, each of which has a flat surface facing each other with a space therebetween (FIG. 24). In the first connector 651, both the first piece 651a and the second piece 651b may be press-formed integrally with the first circuit connecting member 612. Further, in the first coupling body 651, one of the first piece 651a and the second piece 651b is press-formed integrally with the first circuit connection member 612, and the other is formed as a separate member. Then, it may be fixed to the first circuit connection member 612 by welding or the like. In this example, the latter first connecting body 651 is provided on the first circuit connecting member 612, and one end of the first piece 651a is press-formed integrally with the first circuit connecting member 612, One end of the second piece 651b formed as a separate member is fixed to the first circuit connection member 612 by welding or the like. As a result, one end of the first connector 651 is provided integrally with the first circuit connection member 612.

  In the first connector 651, the other end (the other end of each of the first piece 651a and the second piece 651b) is connected to the first circuit connecting member 612 of the adjacent filter circuit 610. It becomes an electrically connectable and detachable connecting portion. The other end of the first connector 651 is protruded from the first circuit connection member 612 provided therein along the direction in which the adjacent filter circuits 610 are arranged. The first coupling body 651 sandwiches the first circuit connection member 612 of the adjacent filter circuit 610 between the other end of each of the first piece 651a and the second piece 651b to form the first piece 651a. And the second piece portion 651b are physically and electrically connected to the adjacent first circuit connection member 612, so that the adjacent first circuit connection members 612 are electrically connected to each other. Further, to the first circuit connection member 612 provided with the first connection body 651, the first connection body 651 of the adjacent filter circuit 610 disposed on the opposite side to the first connection body 651 is connected. You.

In the housing 620 of this modification, one end of the first connector 651 of the filter circuit 610 housed in the housing chamber 620a is housed in the housing wall 620a on the main wall or the first peripheral wall 621b. and has a notch 621b ₁ for placing the other end of the first connection body 651 to the outside of the housing chamber 620a (FIG. 21). Then, this housing 620 connects the other end of the first connector 651 of the adjacent filter circuit 610 disposed on the side opposite to the first connector 651 to the main wall or the second peripheral wall 621c. the notch 621c ₁ for accommodating in the accommodating chamber 620a has (Figure 21). First circuit connecting member 612 of this example has a single body shaped piece portion 612c is protruded out of the housing chamber 620a from 621c _1-out the cut-out (FIGS. 21 and 22). The one part 612c functions as a guide part when connecting the other end of the first connection body 651 of the adjacent filter circuit 610.

  In the first coupling body 651, at least one of the first piece 651a and the second piece 651b is provided with a contact portion 651c protruding toward the other piece that is opposed to the first piece 651a (FIG. 24). . In the illustrated first connection body 651, a contact portion 651c is provided on the first piece 651a, and the first circuit connection member 612 of the adjacent filter circuit 610 is formed by the contact portion 651c and the plane of the second piece 651b. The first circuit connection members 612 adjacent to each other are electrically connected to each other. In this example, an arc-shaped part obtained by bending a part of the first piece 651a into an arc is used as the contact part 651c. However, the contact portion 651c may use a bulging portion that bulges, for example, in a hemispherical shape from the first piece portion 651a.

  In the first coupling body 651, between the other ends of the first piece 651a and the second piece 651b, the adjacent first circuit connection member 612 is arranged along the direction in which the adjacent filter circuits 610 are arranged. Insert. In this way, the first connector 651 causes the adjacent first circuit connection member 612 to be sandwiched between the other ends of the first piece 651a and the second piece 651b. In addition, the other end of the first connector 651 can be extracted from the adjacent first circuit connection member 612.

  The second connector 652 has a one-piece first piece 652a and a second piece 652b in which planes are opposed to each other with a space therebetween (FIG. 24). In the second connector 652, both the first piece 652a and the second piece 652b may be press-formed integrally with the second circuit connecting member 613. Also, in the second connector 652, one of the first piece 652a and the second piece 652b is press-formed integrally with the second circuit connection member 613, and the other is formed as a separate member. Then, it may be fixed to the second circuit connection member 613 by welding or the like. In this example, the latter second connector 652 is provided on the second circuit connecting member 613, and one end of the first piece 652a is press-formed integrally with the second circuit connecting member 613, One end of the second piece 652b formed as a separate member is fixed to the second circuit connection member 613 by welding or the like. Thus, one end of the second connector 652 is provided integrally with the second circuit connection member 613.

  In the second connector 652, the other end (the other end of each of the first piece 652 a and the second piece 652 b) is connected to the second circuit connecting member 613 of the adjacent filter circuit 610. It becomes an electrically connectable and detachable connecting portion. The other end of the second connector 652 projects from the second circuit connection member 613 provided therein along the arrangement direction of the adjacent filter circuits 610. The second connector 652 sandwiches the second circuit connecting member 613 of the adjacent filter circuit 610 between the other end of each of the first piece 652a and the second piece 652b to form the first piece 652a. And the second piece portion 652b are physically and electrically connected to the adjacent second circuit connection member 613, so that the adjacent second circuit connection members 613 are electrically connected to each other. Further, the second circuit connection member 613 provided with the second connection body 652 is connected to the second connection body 652 of an adjacent filter circuit 610 disposed on the opposite side to the second connection body 652. You.

In the housing 620 of this modification, one end of the second connector 652 of the filter circuit 610 housed in the housing chamber 620a is housed in the housing chamber 620a on the main wall or the first peripheral wall 621b. and has a notch 621b ₂ for placing the other end of the second connection body 652 to the outside of the housing chamber 620a (FIG. 21). Then, this housing 620 connects the other end of the second connector 652 of the adjacent filter circuit 610 disposed on the side opposite to the second connector 652 to the main wall or the second peripheral wall 621c. the notch 621c ₂ for accommodating in the accommodating chamber 620a has (Figure 21). The second circuit connecting member 613 of this example has a single body shaped piece portion 613c is protruded out of the housing chamber 620a from 621c _2-out the cut-out (FIGS. 21 and 22). The piece 613c functions as a guide when connecting the other end of the second connector 652 of the adjacent filter circuit 610.

  In the second connector 652, at least one of the first piece 652a and the second piece 652b is provided with a contact 652c protruding toward the other piece that is disposed to face (FIG. 24). . In the illustrated second connection body 652, a contact portion 652c is provided on the first piece portion 652a, and the contact portion 652c and the plane of the second piece portion 652b form the second circuit connection member 613 of the adjacent filter circuit 610. The second circuit connection members 613 adjacent to each other are electrically connected to each other. In this example, an arcuate part obtained by bending a part of the first piece 652a in an arc shape is used as the contact part 652c. However, the contact portion 652c may use a bulging portion that bulges from the first piece portion 652a, for example, in a hemispherical shape.

  In this second connection body 652, between the other end of each of the first piece 652 a and the second piece 652 b, the adjacent second circuit connection member 613 along the arrangement direction of the adjacent filter circuits 610. Insert. In this way, the second connector 652 causes the other end of each of the first piece 652a and the second piece 652b to sandwich the adjacent second circuit connection member 613. Further, the other end of the second connector 652 can be removed from the adjacent second circuit connection member 613.

  Here, the first coupling body 651 protrudes the other end from the first circuit connection member 612 provided with itself along the arrangement direction of the adjacent filter circuits 610, and It extends along the plane of the member 612. The second connector 652 has the other end protruding from the second circuit connection member 613 provided therein along the direction in which the adjacent filter circuits 610 are arranged. 613 extends along the plane. However, the first connection body 651 and the second connection body 652 may be bent by providing an arc-shaped portion or a bent portion between both ends, and offset the other end with respect to the one end. Thus, the noise filter 2A and the wire harness WH can take measures against interference with peripheral components in a state where the noise filter 2A and the wire harness WH are assembled to the vehicle body.

  In the noise filter 2A, for example, after connecting the respective filter circuits 610, all of them may be wound around the main line WT together with the main line WT with an adhesive tape or the like, and held by the main line WT.

  The noise filter 2A of the present modification described above not only has the effect of obtaining the noise filter 1 of the above-described embodiment, but also can change the number of filter circuits 610 to be connected by a simple method. The filter circuit characteristics can be easily adjusted according to the required performance for reduction. Therefore, the noise filter 2A can easily cope with various filter circuit characteristics.

  FIG. 25 shows a conceptual diagram of filter circuit characteristics in which the frequency is represented on the horizontal axis and the noise reduction level is represented on the vertical axis. In this figure, the broken line represents the required performance of noise reduction, the solid line represents the filter circuit characteristics of the noise filter 2A of the present modification, and the two-dot chain line represents the filter circuit characteristics of the noise filter having only one filter circuit 610. ing.

  Further, the noise filter 2A of the present modified example is configured such that the main filter circuit 610A is connected to one of the grounded first electric wire WE1 and the second electric wire WE2 (in this example, the second electric wire WE2). You can take the ground. That is, the noise filter 2A does not need to provide a ground terminal for each filter circuit unlike the conventional noise filter regardless of the number of the filter circuits 610. Therefore, the noise filter 2A can improve the assembling workability.

  Further, the noise filter 2A of the present modified example is configured such that the first electric connection member 630A (first electric connection structure 630) and the second electric connection member 640A (second electric connection structure 640) provide the filter circuit 610 side with the first electric connection member 640A. Since the connection between the electric wire WE1 and the second electric wire WE2 is detachable, the work of attaching and detaching the first electric wire WE1 and the second electric wire WE2 is facilitated. Therefore, the noise filter 2A is excellent in workability for assembling the first electric wire WE1 and the second electric wire WE2, and also excellent in workability for replacement. Furthermore, since the noise filter 2A of the present modification is configured such that the first coupling body 651 and the second coupling body 652 are detachably configured between the adjacent filter circuits 610, the filter circuit 610 to be replaced can be replaced. By specifying, only the filter circuit 610 can be replaced.

  Further, in the noise filter 2A of this modification, the first circuit connection member 612 and the second circuit connection member 613 are each formed into a flat plate shape. In the noise filter 2A, the first circuit-side connection portion 632 of the first electric connection member 630A and the first connector 651 are electrically connected to each other by sandwiching a plane between the first circuit connection members 612. In addition, the second circuit-side connecting portion 642 of the second electric connection member 640A and the second connector 652 are formed so as to be electrically connected to each other by sandwiching the plane between the second circuit connection members 613. . Therefore, in the noise filter 2A, the connection structure of each of the noise filters 2A can be reduced, and the physique can be reduced in size. The noise filter 2A can also simplify the connection structure.

  Further, the wire harness WH of the present modified example includes such a noise filter 2A, and the effect of obtaining the noise filter 2A can be obtained.

  Here, in the present modified example, the case where the housing 620 is provided for each filter circuit 610 is illustrated. However, the noise filter 2A of this modification may be configured to include a housing in which two or more filter circuits 610 are collectively accommodated, instead of such a housing 620.

[Noise filter 2B]
Here, the noise filter 2 of the present modified example is different from the first and second electrical connection structures 630 and 640 and the first and second coupling bodies 651 and 652 described above in the following first filter. And a second electric connection structure 730, 740, and a noise filter 2B provided with first and second connectors 751, 752 (FIGS. 26 and 27).

  The noise filter 2B includes a plurality of filter circuits 710 for reducing noise components, as in the noise filter 2A described above (FIGS. 26 and 27). The plurality of filter circuits 710 are roughly classified into one main filter circuit 710A electrically connected to each of the intermediate connection parts WEa1 and WEa2, and the other sub filter circuits 710B.

  The filter circuit 710 includes at least one noise reduction element 11, a first circuit connection member 712, and a second circuit connection member 713 similar to the filter circuit 610 described above (FIG. 27).

  The illustrated filter circuit 710 includes one capacitor as the noise reduction element 11, and is configured so that noise can be reduced with this one capacitor. The first circuit connection member 712 and the second circuit connection member 713 are conductive members formed in the same manner as the first circuit connection member 612 and the second circuit connection member 613, and are each made of a conductive material such as metal. It is formed as a plate-shaped bus bar. However, the first circuit connecting member 712 in this example does not have a component corresponding to the first connecting body 651 and the piece 612c provided integrally with the first circuit connecting member 612. In addition, the second circuit connection member 713 of this example does not have a component corresponding to the second connector 652 and the piece 613c provided integrally with the second circuit connection member 613.

  The noise filter 2B includes a housing 721 that houses the filter circuit 710 (FIG. 26). The housing 721 is formed of an insulating material such as a synthetic resin. The housing 721 may be provided for each filter circuit 710, or may accommodate two or more filter circuits 710 collectively. The housing 721 may be formed by fitting a plurality of housing members to which the filter circuit 710 can be attached and detached, or may be formed integrally with the filter circuit 710.

  The housing 721 inserts the first circuit-side connection portion 732 of the first electrical connection member 730A described later or the first connection portion 751a of the first connection body 751, and the first circuit-side connection portion 732 or the first connection portion. The portion 751a can be connected to the first circuit connection member 712, and the second circuit side connection portion 742 of the second electric connection member 740A described later or the second connection portion 752a of the second connection body 752 is inserted. 26, two through-holes 721a capable of connecting the second circuit side connection portion 742 or the second connection portion 752a to the second circuit connection member 713 are provided (FIG. 26). The respective through-holes 721a are arranged to face each other along the respective planes of the first circuit connection member 712 and the second circuit connection member 713.

  Further, the noise filter 2B includes a first electric connection structure 730 that electrically connects the intermediate connection portion WEa1 of the first electric wire WE1 to the first circuit connection member 712 of the main filter circuit 710A, and a second electric wire WE2. A second electrical connection structure 740 for electrically connecting the intermediate connection portion WEa2 to the second circuit connection member 713 of the main filter circuit 710A (FIG. 27).

  The first electrical connection structure 730 is formed of a conductive material such as a metal as one connection member (hereinafter, referred to as “first electrical connection member”) 730A. The first electric connection member 730A includes a first electric wire side connection portion 731 physically and electrically connected to the intermediate connection portion WEa1 of the first electric wire WE1, and a first circuit connection member 712 of the main filter circuit 710A. And a first circuit side connection portion 732 physically and electrically connected to the first circuit side (FIG. 27).

  For example, the first wire-side connection portion 731 and the first circuit-side connection portion 732 have the same shape as the first wire-side connection portion 631 and the first circuit-side connection portion 632 of the first electrical connection member 630A, respectively. Formed as Therefore, the first circuit-side connection portion 732 includes a single piece-shaped first piece 732a and a second piece 732b in which planes are opposed to each other with a space therebetween, and the first piece 732a and the second piece 732b. And a contact portion 732c provided on at least one of the portions 732b (FIG. 27). In this example, a contact portion 732c is provided on the first piece portion 732a, the first circuit connection member 712 is sandwiched between the contact portion 732c and the plane of the second piece portion 732b, and the first circuit side connection portion 732 is formed in the first piece portion 732a. One circuit connection member 712 is physically and electrically connected. In the first electric connection member 730A, the first circuit connection member 712 is inserted between the first piece 732a and the second piece 732b along the direction orthogonal to the direction in which the adjacent filter circuits 710 are arranged. Go. In this manner, the first electric connection member 730A causes the first circuit connection member 732 to sandwich the first circuit connection member 712. Further, the first electric connection member 730A can also remove the first circuit side connection portion 732 from the first circuit connection member 712.

  The second electric connection structure 740 is formed of a conductive material such as metal as one connection member (hereinafter, referred to as “second electric connection member”) 740A. The second electric connection member 740A includes a second electric wire side connection portion 741 physically and electrically connected to the intermediate connection portion WEa2 of the second electric wire WE2, and a second circuit connection member 713 of the main filter circuit 710A. And a second circuit-side connecting portion 742 that is physically and electrically connected to the second circuit side (FIG. 27).

  For example, the second electric wire side connection portion 741 and the second circuit side connection portion 742 have the same shape as the second electric wire side connection portion 641 and the second circuit side connection portion 642 of the second electric connection member 640A, respectively. Formed as Therefore, the second circuit-side connecting portion 742 includes a single piece-shaped first piece 742a and a second piece 742b in which the planes are opposed to each other with a space therebetween, and the first piece 742a and the second piece. And a contact portion 742c provided on at least one of the portions 742b (FIG. 27). In this example, a contact portion 742c is provided on the first piece portion 742a, and the second circuit connection member 713 is sandwiched between the contact portion 742c and the plane of the second piece portion 742b to form the second circuit side connection portion 742 in the first direction. The two-circuit connecting member 713 is physically and electrically connected. In the second electric connection member 740A, the second circuit connection member 713 is inserted between the first piece 742a and the second piece 742b along the direction orthogonal to the direction in which the adjacent filter circuits 710 are arranged. Go. In this manner, the second electric connection member 740A causes the second circuit connection member 742 to sandwich the second circuit connection member 713. In the second electric connection member 740A, the second circuit-side connection portion 742 can be removed from the second circuit connection member 713.

  Further, the noise filter 2B can electrically connect the first circuit connection members 712 of the adjacent filter circuits 710 indirectly to each other, and can connect the first circuit connection members 712 of the adjacent filter circuits 710 to each other. A first connector 751 that can be separated can be provided (FIG. 27). Further, the noise filter 2B is capable of indirectly electrically connecting the second circuit connection members 713 of the adjacent filter circuits 710, and of the second circuit connection members 713 of the adjacent filter circuits 710. A second connector 752 that can be separated can be provided (FIG. 27). The first connector 751 and the second connector 752 are formed of a conductive material such as a metal. The first connector 751 and the second connector 752 are provided for each of the plurality of filter circuits 710.

  The first connecting member 751 is formed of a conductive material such as a metal as one connecting member (hereinafter, referred to as “first connecting member”). The first connecting body 751 includes a detachable first connecting portion 751a physically and electrically connected to one of the first circuit connecting members 712 of each of the adjacent filter circuits 710, And a detachable second connection portion 751b that is physically and electrically connected to the adjacent first connection body 751 connected to the other (see FIG. 27). Further, the first connector 751 has a connected portion 751c to which the second connector 751b of the adjacent first connector 751 is physically and electrically connected (FIG. 27).

The illustrated first connection portion 751a is formed in the same shape as the first circuit-side connection portion 732 of the first electrical connection member 730A. Therefore, the first connecting portion 751a is provided with oppositely disposed first arm portion 751a ₁ and a second arm portion 751a ₂ piece body shaped were spaced apart a plane between each other, the first arm portion 751a ₁ that the a contact portion 751a ₃ provided on at least one of the two arm portion 751a _2, with a (Figure 27). In this example, the contact portion 751a ₃ provided in the first arm portion 751a _1, a first circuit connecting member 712 is sandwiched between the contact portion 751a ₃ and the second arm portion 751a ₂ of the plane, the first connecting portion 751a Is physically and electrically connected to the first circuit connection member 712. In the first connection body 751, between the first arm portion 751a ₁ and the second arm portion 751a _2, insert the first circuit connecting member 712 along the direction perpendicular to the array direction of the adjacent filter circuit 710 To go. In this way, the first connecting body 751 causes the first connecting portion 751a to hold the first circuit connecting member 712. In addition, the first connecting body 751 can also extract the first connecting portion 751 a from the first circuit connecting member 712.

The illustrated second connecting portion 751b is formed in the same shape as the first connecting portion 751a. Thus, the second coupling portion 751b includes an oppositely disposed first arm portion 751b ₁ and the second arm portion 751b ₂ piece body shaped were spaced apart a plane between each other, a first arm portion 751b ₁ that the a contact portion 751b ₃ provided on at least one of the two arm portion 751b _2, with a (Figure 27). In this illustration, the contact portion 751b ₃ provided in the first arm portion 751b _1, by holding the the connected portion 751c of the contact portion 751b ₃ and the second arm portion 751b of the next in the _second plane first connection body 751 The second connecting portion 751b is physically and electrically connected to the connected portion 751c of the adjacent first connecting body 751. In the first connection body 751, the coupled portion of the first arm portion 751b ₁ and between the second arm portion 751b _2, next along the direction of arrangement of the adjacent filter circuit 710 first connection body 751 751c Insert. In this manner, the first connector 751 causes the second connector 751b to sandwich the connected portion 751c of the adjacent first connector 751. Further, in the first connector 751, the second connector 751b can be extracted from the connected portion 751c of the adjacent first connector 751.

  The connected portion 751c is a flat plate-like portion sandwiched between the second connecting portions 751b of the adjacent first connecting body 751. In the first connection body 751, a connected portion 751c is disposed between the first connection portion 751a and the second connection portion 751b. The connected portion 751c in this example is arranged on the same plane as the first circuit connecting member 712 or has a plane that is offset in a direction orthogonal to the plane of the first circuit connecting member 712. Form as Further, the connected portion 751c in this example is formed in an L-shaped flat plate shape having two pieces, a first connecting section 751a is arranged on one piece, and a second connecting section is formed on the other piece. 751b. In the illustrated example of the connected portion 751c, one of the portions extends along the direction orthogonal to the arrangement direction of the adjacent filter circuits 710, and the other portion extends along the direction of arrangement of the adjacent filter circuits 710. Let me.

  Here, the first coupling body 751 is provided corresponding to each of the main filter circuit 710A and the sub filter circuit 710B. However, in the illustrated noise filter 2B, the first circuit-side connection portion 732 having the same function as the first connection portion 751a is formed on the first electric connection member 730A. Therefore, in the noise filter 2B, the first electric connection member 730A has at least one of the function of the second connection portion 751b and the connected portion 751c, so that the first electric connection member of the main filter circuit 710A is provided. 730A and the first connector 751 are configured as one component, and the first connector 751 is provided as a dedicated component corresponding to only the sub-filter circuit 710B. The illustrated first electric connection member 730A is formed to have both functions of the second connection portion 751b and the connected portion 751c (FIG. 27).

  The second connecting member 752 is formed of a conductive material such as a metal as one connecting member (hereinafter, referred to as “second connecting member”). The second connection body 752 includes a detachable first connection portion 752 a physically and electrically connected to one of the second circuit connection members 713 of each of the adjacent filter circuits 710, And a detachable second connection portion 752b that is physically and electrically connected to an adjacent second connection body 752 that is connected to the other of the second connection member 752 (FIG. 27). Further, the second connector 752 has a connected portion 752c to which the second connector 752b of the adjacent second connector 752 is physically and electrically connected (FIG. 27).

The illustrated first connection portion 752a is formed in the same shape as the second circuit-side connection portion 742 of the second electric connection member 740A. Therefore, the first connecting portion 752a is provided with oppositely disposed first arm portion 752a ₁ and a second arm portion 752a ₂ piece body shaped were spaced apart a plane between each other, the first arm portion 752a ₁ that the a contact portion 752a ₃ provided on at least one of the two arm portion 752a _2, with a (Figure 27). In this example, the contact portion 752a ₃ provided in the first arm portion 752a _1, the second circuit connecting member 713 is sandwiched between the contact portion 752a ₃ and the second arm portion 752a ₂ of the plane, the first connecting portion 752a Is physically and electrically connected to the second circuit connection member 713. In the second connection body 752, between the first arm portion 752a ₁ and the second arm portion 752a _2, insert the second circuit connecting member 713 along the direction perpendicular to the array direction of the adjacent filter circuit 710 To go. In this way, the second connection body 752 causes the first connection portion 752a to hold the second circuit connection member 713. Further, the second connection body 752 can also extract the first connection portion 752a from the second circuit connection member 713.

The illustrated second connecting portion 752b is formed in the same shape as the first connecting portion 752a. Thus, the second coupling portion 752b includes an oppositely disposed first arm portion 752b ₁ and the second arm portion 752b ₂ piece body shaped were spaced apart a plane between each other, a first arm portion 752b ₁ that the a contact portion 752b ₃ provided on at least one of the two arm portion 752b _2, with a (Figure 27). In this illustration, the contact portion 752b ₃ provided in the first arm portion 752b _1, by holding the the connected portion 752c of the contact portion 752b ₃ and the second arm portion 752b of the next in the _second plane second connection body 752 The second connecting portion 752b is physically and electrically connected to the connected portion 752c of the adjacent second connecting body 752. In the second connection body 752, the coupled portion of the first arm portion 752b ₁ and between the second arm portion 752b _2, next along the direction of arrangement of the adjacent filter circuit 710 the second coupling member 752 752c Insert. In this manner, the second connector 752 causes the second connector 752b to sandwich the connected portion 752c of the adjacent second connector 752. In addition, the second connecting member 752 can also pull out the second connecting portion 752b from the connected portion 752c of the adjacent second connecting member 752.

  The connected portion 752c is a flat plate-like portion sandwiched between the second connection portions 752b of the adjacent second connection body 752. In the second connector 752, a connected portion 752c is disposed between the first connection portion 752a and the second connection portion 752b. The connected portion 752c of this example is disposed on the same plane as the second circuit connecting member 713, or has a plane that is offset in a direction orthogonal to the plane of the second circuit connecting member 713. Form as The connected portion 752c in this example is formed in an L-shaped flat plate shape having two pieces, a first connecting portion 752a is arranged on one piece, and a second connecting section is formed on the other piece. 752b. In the illustrated connected portion 752c, one of the portions extends along the direction orthogonal to the arrangement direction of the adjacent filter circuits 710, and the other portion extends along the arrangement direction of the adjacent filter circuits 710. Let me.

  Here, the second connector 752 is provided corresponding to each of the main filter circuit 710A and the sub filter circuit 710B. However, in the illustrated noise filter 2B, the second circuit-side connection portion 742 having the same function as the first connection portion 752a is formed on the second electric connection member 740A. Therefore, in the noise filter 2B, the second electric connection member 740A has at least one of the functions of the second connection portion 752b and the connected portion 752c, so that the second electric connection member of the main filter circuit 710A is provided. 740A and the second connector 752 are configured as one component, and the second connector 752 is provided as a dedicated component corresponding to only the sub-filter circuit 710B. The illustrated second electric connection member 740A is formed to have both functions of the second connection portion 752b and the connected portion 752c (FIG. 27).

  The noise filter 2B includes a first housing 722A that houses the first electrical connection member 730A, a second housing 722B that houses the second electrical connection member 740A, and a third housing that houses the first connector 751. 722C, and a fourth housing 722D that houses the second connector 752 (FIG. 26). The first to fourth housings 722A, 722B, 722C, 722D are formed of an insulating material such as a synthetic resin.

The first housing 722A accommodates the intermediate connection part WEa1 of the first electric wire WE1 in addition to the first electric connection member 730A. The first housing 722A has a plurality of detachable housing members at least between the first electric wire side connection portion 731 of the first electric connection member 730A and the intermediate connection portion WEa1 of the first electric wire WE1 fitted together. Consisting of In the illustrated first housing 722A, the second connection portion 751b of the first connection body 751 housed in the adjacent third housing 722C is inserted, and the second connection portion 751b is connected to the first electrical connection member 730A. has a through hole 722A ₁ which can be connected to the connected portion 751c in (Figure 26).

The second housing 722B houses the intermediate connection portion WEa2 of the second electric wire WE2 in addition to the second electric connection member 740A. The second housing 722B is fitted with at least a plurality of housing members that can be attached and detached at least between the second electric wire side connection portion 741 of the second electric connection member 740A and the intermediate connection portion WEa2 of the second electric wire WE2. Consisting of In the illustrated second housing 722B, the second connection portion 752b of the second connection body 752 housed in the adjacent fourth housing 722D is inserted, and the second connection portion 752b is connected to the second electric connection member 740A. having a through-hole 722B ₁ which can be connected to the connected portion 752c in (Figure 26).

The third housing 722C may be formed by fitting a plurality of housing members to which the first connector 751 can be attached and detached, and may be formed integrally with the first connector 751. You may. In the illustrated third housing 722C, the second connection portion 751b of the second connection body 751 housed in the adjacent third housing 722C is inserted, and the second connection portion 751b is housed by itself. has a through hole 722C ₁ that can be connected to the connected portion 751c of the first connection body 751 (FIG. 26).

The fourth housing 722D may be formed by fitting a plurality of housing members to which the second connector 752 can be attached and detached, and may be integrally formed with the second connector 752. You may. In the illustrated fourth housing 722D, the second connection portion 752b of the second connection body 752 housed in the adjacent fourth housing 722D is inserted, and the second connection portion 752b is housed by itself. having a through hole 722D ₁ which can be connected to the connected portion 752c of the second coupling member 752 (FIG. 26).

  After connecting all the components of the noise filter 2B, all of the components may be wound around the main line WT together with the main line WT with an adhesive tape or the like, and held on the main line WT.

  Even with the noise filter 2B and the wire harness WH described above, the same effects as those of the noise filter 2A and the wire harness WH described above can be obtained.

[Noise filter 2C]
Here, the noise filter 2 of the present modified example is different from the first and second electrical connection structures 630 and 640 and the first and second coupling bodies 651 and 652 described above in the following first filter. And a noise filter 2C provided with the second electrical connection structures 830 and 840 (FIGS. 28 and 29).

  The noise filter 2C includes a plurality of filter circuits 810 that reduce noise components, as in the noise filter 2A described above (FIG. 29). The filter circuit 810 includes at least one noise reduction element 11 for reducing a noise component, a conductive first circuit connection member 812 to which a first element connection portion of the noise reduction element 11 is electrically connected, A conductive second circuit connecting member 813 to which the second element connecting portion of the element 11 is electrically connected (FIG. 29). This exemplary filter circuit 810 includes one capacitor as the noise reduction element 11, and is configured so that the noise can be reduced with this one capacitor.

  The first circuit connection member 812 and the second circuit connection member 813 are conductive members that electrically connect each other via the noise reduction element 11. The first circuit connection member 812 and the second circuit connection member 813 of this example are each formed as a flat tuning fork terminal using a conductive material such as metal (FIG. 29). In the first circuit connection member 812, the first element connection part of the noise reduction element 11 is physically and electrically connected to the base of the terminal part. In the second circuit connection member 813, the second element connection part of the noise reduction element 11 is physically and electrically connected to the base of the terminal part.

  The noise filter 2C includes a housing 821 that houses the filter circuit 810 (FIG. 28). The housing 821 is formed of an insulating material such as a synthetic resin. This housing 821 may be provided for each filter circuit 810, or may house two or more filter circuits 810 collectively. The housing 821 may be formed by fitting a plurality of housing members to which the filter circuit 810 can be attached and detached, or may be formed integrally with the filter circuit 810.

  The housing 821 includes the first circuit connection member 812 and the second circuit connection member 813 such that the respective planes are orthogonal to the arrangement direction of the adjacent filter circuits 810. The circuit connection member 813 is accommodated. The housing 821 also includes a first circuit connection member 812 such that a counterpart insertion port in the terminal portion of the first circuit connection member 812 and a counterpart insertion port in the terminal portion of the second circuit connection member 813 are opposite to each other. And the second circuit connection member 813. The housing 821 is capable of inserting a first connection portion 833 of a first electrical connection member 830A described later, and connecting the first connection portion 833 to the first circuit connection member 812. (2) Notch portions 821a capable of inserting the second connection portion 843 of the second electrical connection member 840A and connecting the second connection portion 843 to the second circuit connection member 813 are provided at two places (FIG. 28). Specifically, each cutout portion 821a can insert one side of a first circuit-side connection portion 832 of the first electrical connection member 830A, which will be described later, and can be inserted into one of the second electrical connection members 840A. It is formed so that one side of the two-circuit-side connection portion 842 can be inserted. In each notch 821a, the corresponding first connection portion 833 or second connection portion 843 is inserted, the first connection portion 833 is connected to the first circuit connection member 812, and the second connection portion 843 is It is connected to the second circuit connection member 813.

  Further, the noise filter 2C electrically connects the intermediate connection portion WEa1 of the first electric wire WE1 to the first circuit connection member 812 of one (main filter circuit) of the plurality of filter circuits 810. An electrical connection structure 830 and a second electrical connection structure 840 for electrically connecting the intermediate connection portion WEa2 of the second electric wire WE2 to the second circuit connection member 813 of the main filter circuit (FIG. 29). The illustrated first electric connection structure 830 electrically connects the intermediate connection portion WEa1 of the first electric wire WE1 to each of the first circuit connection members 812 of the plurality of filter circuits 810. In addition, the second electric connection structure 840 of this example electrically connects the intermediate connection portion WEa2 of the second electric wire WE2 to each second circuit connection member 813 of the plurality of filter circuits 810.

  The first electric connection structure 830 is formed of a conductive material such as a metal as one connection member (hereinafter, referred to as “first electric connection member”) 830A (FIG. 29). The first electric connection member 830A includes a first electric wire side connection portion 831 physically and electrically connected to the intermediate connection portion WEa1 of the first electric wire WE1, and a first circuit of each of the plurality of filter circuits 810. A first circuit side connection portion 832 that is physically and electrically connected to the connection member 812 (FIG. 29). The illustrated first electric connection member 830A is formed as a plate-shaped bus bar.

  For example, the first electric wire side connection portion 831 is formed in the same shape as the first electric wire side connection portion 631 of the first electric connection member 630A.

  On the other hand, the first circuit side connection portion 832 is formed in a rectangular flat plate shape, and one side is inserted into each of the first circuit connection members 812 of the plurality of filter circuits 810, and the contact portion of each of the first circuit connection members 812 is formed. It is formed so as to be sandwiched between them. In the first circuit-side connection portion 832, each portion sandwiched between the contact portions of each first circuit connection member 812 becomes the first connection portion 833 of the first electric connection member 830A. Therefore, the first circuit-side connection portion 832 is inserted into each of the first circuit connection members 812 of the plurality of filter circuits 810 to insert the respective first connection portions 833 into the respective first circuit connection members 812. Physically and electrically. Further, in the first electric connection member 830A, the first circuit side connection portion 832 can be removed from each of the first circuit connection members 812.

  Here, in the first circuit-side connection portion 832, between the two first connection portions 833 connected to the respective first circuit connection members 812 of the adjacent filter circuits 810, the respective first connection portions 833 are connected. The circuit connection member 812 is electrically connected indirectly. In addition, the first circuit-side connection portion 832 can be separated from the respective first circuit connection members 812 by extracting the first circuit-side connection portions 832 from the respective first circuit connection members 812. Therefore, the first circuit-side connection portion 832 can use the space between two adjacent first connection portions 833 as the first connection body 651.

  The second electric connection structure 840 is formed of a conductive material such as a metal as one connection member (hereinafter, referred to as “second electric connection member”) 840A (FIG. 29). The second electric connection member 840A includes a second electric wire side connection portion 841 physically and electrically connected to the intermediate connection portion WEa2 of the second electric wire WE2, and a second circuit of each of the plurality of filter circuits 810. A second circuit side connection portion 842 that is physically and electrically connected to the connection member 813 (FIG. 29). The illustrated second electric connection member 840A is formed as a plate-shaped bus bar.

  For example, the second electric wire side connection portion 841 is formed in the same shape as the second electric wire side connection portion 641 of the second electric connection member 640A.

  On the other hand, the second circuit side connection portion 842 is formed in a rectangular flat plate shape, and one side is inserted into each of the second circuit connection members 813 of the plurality of filter circuits 810, and the contact portion of each of the second circuit connection members 813 is formed. It is formed so as to be sandwiched between them. In the second circuit-side connection portion 842, each portion sandwiched between the contact portions of each second circuit connection member 813 becomes the second connection portion 843 of the second electric connection member 840A. Therefore, the second circuit-side connecting portion 842 is inserted into each of the second circuit connecting members 813 of the plurality of filter circuits 810 to insert the respective second connecting portions 843 into the respective second circuit connecting members 813. Physically and electrically. Further, the second electric connection member 840A can also extract the second circuit side connection portion 842 from each of the second circuit connection members 813.

  Here, in the second circuit side connection portion 842, between the two second connection portions 843 connected to the respective second circuit connection members 813 of the adjacent filter circuits 810, the respective second connection portions 843 are connected. The circuit connection member 813 is electrically connected indirectly. Further, the second circuit-side connection portion 842 can be separated from each of the second circuit connection members 813 by extracting from the respective second circuit connection members 813. Therefore, the second circuit-side connection portion 842 can use the space between two adjacent second connection portions 843 as the second connection body 652.

  The noise filter 2C includes a first housing 822A that houses the first electric connection member 830A, and a second housing 822B that houses the second electric connection member 840A (FIG. 28). The first and second housings 822A and 822B are formed of an insulating material such as a synthetic resin.

  The first housing 822A accommodates the intermediate connection portion WEa1 of the first electric wire WE1 in addition to the first electric connection member 830A. The first housing 822A has at least a plurality of housing members that can be attached and detached between the first electric wire side connection portion 831 of the first electric connection member 830A and the intermediate connection portion WEa1 of the first electric wire WE1 are fitted to each other. Consisting of The first housing 822A exposes each first connection portion 833 of the first circuit-side connection portion 832 in the first electric connection member 830A.

  The second housing 822B houses the intermediate connection portion WEa2 of the second electric wire WE2 in addition to the second electric connection member 840A. In the second housing 822B, a plurality of housing members that can be attached and detached at least between the second electric wire side connection portion 841 of the second electric connection member 840A and the intermediate connection portion WEa2 of the second electric wire WE2 are fitted to each other. Consisting of The second housing 822B exposes each second connection portion 843 of the second circuit-side connection portion 842 in the second electric connection member 840A.

  After connecting all of the components of the noise filter 2 </ b> C, all of the components may be wound around the main line WT with an adhesive tape or the like, and may be held on the main line WT.

  Even with the noise filter 2C and the wire harness WH described above, the same effects as those of the noise filter 2A and the wire harness WH can be obtained.

[Modification 2]
Reference numeral 3 in FIGS. 30 to 32 indicates a noise filter of the present modification. The noise filter 3 is different from the noise filter 1 of the above-described embodiment in that the first circuit connection member and the second circuit connection member, the first electric connection structure, the second electric connection structure, and the housing in the filter circuit are as follows. It is composed. Therefore, those having no change or only minor changes to the noise filter 1 (1A or the like) of the embodiment are denoted by the same reference numerals as those provided in the noise filter 1 (1A or the like). The description is omitted.

  The filter circuit 910 of this modification includes the noise reduction element 11, the first circuit connection member 912, and the second circuit connection member 913 (FIGS. 32 and 33).

  This exemplary filter circuit 910 is interposed between the first electric wire WE1 and the second electric wire WE2 that run in parallel, and arranges the two noise reduction elements 11 side by side in the axial direction of the first electric wire WE1 and the second electric wire WE2. (FIGS. 30 to 32).

  The first circuit connection member 912 includes an element connection portion 912a directly electrically connected to the first element connection portion of the noise reduction element 11, and an indirect electric connection to the intermediate connection portion WEa1 of the first electric wire WE1. (See FIGS. 32 and 33). The second circuit connection member 913 is electrically connected to the element connection portion 913a directly connected to the second element connection portion of the noise reduction element 11 and indirectly electrically connected to the intermediate connection portion WEa2 of the second electric wire WE2. (See FIGS. 32 and 33). In the illustrated filter circuit 910, two noise reduction elements 11 are sandwiched between the electric connection portion 912b and the electric connection portion 913b in the axial direction of the first electric wire WE1 and the second electric wire WE2.

  On the other hand, the first electric connection structure 930 of the present modified example is a first electric wire side connection in which the first electric wire WE1 and the second electric wire WE2 that are moved in parallel are inserted and fitted along the axial direction to electrically connect each other. A body 931 and a first circuit side connection body 932 are provided (FIGS. 30 to 32). Further, the second electric connection structure 940 of the present modified example is configured such that the first electric wire WE <b> 1 and the second electric wire WE <b> 2 which are moved in parallel are inserted and fitted along the axial direction, thereby electrically connecting each other to each other. A body 941 and a second circuit side connection body 942 are provided (FIGS. 30 to 32).

  The first electric wire side connecting member 931 is physically and electrically connected to the electric wire connecting portion 931a for physically and electrically connecting to the intermediate connecting portion WEa1 of the first electric wire WE1, and to the first circuit side connecting member 932. (See FIGS. 31 to 33). The electric wire connection portion 931a is physically and electrically connected to the intermediate connection portion WEa1 by, for example, crimping the two-piece portion of the U-shaped body around the intermediate connection portion WEa1 of the first electric wire WE1. To be connected.

  Here, the first circuit side connection body 932 is provided on the first circuit connection member 912. Here, the electric connection portion 912b of the first circuit connection member 912 is formed as a first circuit side connection body 932 (FIGS. 30 to 32). The electric connection portion 931b of the first electric wire side connection member 931 and the first circuit side connection member 932 (the electric connection portion 912b of the first circuit connection member 912) are arranged in the axial direction of the first electric wire WE1 and the second electric wire WE2 which run in parallel. And a male / female terminal connection structure that can be attached and detached along one of them, one of which is formed as a female terminal part, and the other is formed as a male terminal part. In this example, the electric connection portion 931b is formed as a male terminal portion having a rectangular male tab shape, and the electric connection portion 912b is formed as a rectangular box-shaped female terminal portion. The electrical connection portion 912b is disposed inside a rectangular cylindrical housing portion arranged with the axial direction of the first electric wire WE1 and the second electric wire WE2 as a cylinder axial direction, and inside the housing portion. And a resilient piece for fitting the electric connecting portion 931b inserted into the other side with a holding force associated with an elastic force.

  The second wire-side connection body 941 is physically and electrically connected to the wire connection section 941a for physically and electrically connecting to the intermediate connection section WEa2 of the second wire WE2, and to the second circuit-side connection body 942. (See FIGS. 31 to 33). The electric wire connection portion 941a is physically and electrically connected to the intermediate connection portion WEa2 by, for example, crimping the two pieces of the U-shaped body around the intermediate connection portion WEa2 of the second electric wire WE2. To be connected.

  Here, the second circuit-side connection body 942 is provided on the second circuit connection member 913. Here, the electric connection portion 913b of the second circuit connection member 913 is formed as a second circuit side connection body 942 (FIGS. 30 to 32). The electric connection part 941b of the second electric wire side connection body 941 and the second circuit side connection body 942 (the electric connection part 913b of the second circuit connection member 913) are the same as the electric connection parts 912b and 931b of the first electric connection structure 930. As described above, a male and female terminal connection structure is formed. In this example, the electric connection portion 941b is formed as a male terminal portion having a rectangular male tab shape, and the electric connection portion 913b is formed as a rectangular box-shaped female terminal portion.

  The housing 920, like the noise filter 1 (1A or the like) of the embodiment, fits the first housing member 921 and the second housing member 922 to each other to form the filter circuit 910 and the first electric wire WE1. An accommodation room 920a for accommodating the intermediate connection part WEa1 and the intermediate connection part WEa2 of the second electric wire WE2 is formed (FIG. 30). The first electrical connection structure 930 and the second electrical connection structure 940 are also accommodated in the accommodation room 920a.

The first housing member 921 of the present modification, the first housing member 21 of the embodiment, the first outlets 21b ₁ to draw one end side of the first wire WE1 outwardly first outlets change to 921b _1, and corresponds to a modification of the other end of the second wire WE2 fourth outlets 21c ₂ which pulled outward in the fourth outlets 921c ₂ (Figure 31). First extraction port 921b ₁ of the present modification, which has an opening area of simply draw one end side of the first wire WE1 outwardly, the electrical connection portion 931b of the first wire WE1 side filter circuit It has an opening area for a working space when being inserted and fitted into the electric connection portion 912b on the 910 side. At the like, the fourth outlets 921c ₂ of this modification, which has the opening area of the simply drawn the other end side of the second wire WE2 outwardly, electrical of the second wire WE2 side It has an opening area for a working space when the connection portion 941b is inserted and fitted into the electric connection portion 913b on the filter circuit 910 side.

Here, the second housing member 922 of the present modified example is inserted and fitted with a first locking projection 924 for preventing the inserted and fitted electrical connection portion 931b from being removed from the electrical connection portion 912b. And a second locking projection 925 for suppressing removal of the electrical connection portion 941b from the electrical connection portion 913b (FIG. 32). A first locking protrusion 924 second engaging protrusions 925 are each a projecting member which projects from the inner wall surface 22a ₁ of Shukabetai 22a. When the first housing member 921 and the second housing member 922 are fitted to each other, the first locking projection 924 forms an electric connection at the electric connection portion 931b in the axial direction of the first electric wire WE1 and the second electric wire WE2. It is arranged opposite to the connection part 912b side. At this time, the distance between the first locking projection 924 and the electric connection portion 931b is set such that the electric connection between the electric connection portions 912b and 931b is made even if the electric connection portion 931b moves in the withdrawing direction with respect to the electric connection portion 912b. It should be large enough to keep the connection state. When the first housing member 921 and the second housing member 922 are fitted to each other, the second locking projection 925 electrically connects the electric connection portion 941b in the axial direction of the first electric wire WE1 and the second electric wire WE2. It is arranged opposite to the connection portion 913b side. At this time, the distance between the second locking projection 925 and the electric connection portion 941b is set such that the electric connection between the electric connection portions 913b and 941b is made even if the electric connection portion 941b moves in the withdrawal direction with respect to the electric connection portion 913b. It should be large enough to keep the connection state.

  As described above, similarly to the noise filter 1 of the embodiment, the noise filter 3 of the present modification includes the intermediate connection portion WEa1 of the first electric wire WE1 bundled on the trunk WT of the wire harness WH and the second electric wire. The filter circuit 10 is interposed between the intermediate connection portion WEa2 of the WE2 and the filter circuit 10 is electrically connected to the respective intermediate connection portions WEa1 and WEa2. Therefore, similarly to the noise filter 1 of the embodiment, the noise filter 3 of the present modified example is a simple one that does not require the adjustment of the filter circuit characteristic in consideration of the noise component of the intermediate wire as in the related art. ing. Further, the noise filter 3 of the present modified example does not require a ground terminal, like the noise filter 1 of the embodiment, so that the size and weight of the body can be reduced.

  Further, the noise filter 3 of the present modified example has a filter circuit 910 interposed between the first electric wire WE1 and the second electric wire WE2 that run in parallel, and is arranged in the axial direction of the first electric wire WE1 and the second electric wire WE2. The first electric connection structure 930 and the second electric connection structure 940 are arranged so as to sandwich the two noise reduction elements 11 in the axial direction. Then, the first electrical connection structure 930 and the second electrical connection structure 940 determine the fitting direction of the electrical connection portions 912b and 931b and the fitting direction of the electrical connection portions 913b and 941b with the first wire WE1 and the second electrical connection portion 913b. It is set in the axial direction of the electric wire WE2. Therefore, the noise filter 3 of the present modified example has a direction perpendicular to the axial direction of the first electric wire WE1 and the second electric wire WE2 running in parallel and the arrangement direction of the first electric wire WE1 and the second electric wire WE2 (here, the first casing WE1). The size of the body member 921 and the second housing member 922 (in the fitting direction) can be further reduced in size.

  Further, the noise filter 3 of the present modified example is different from the noise filter 1 of the embodiment in which elasticity is used for the electrical connection between the first electric wire WE1 and the second electric wire WE2 and the filter circuit 10, and is different from the noise filter 1 of the embodiment. The terminal connection structure set in the fitting direction as described above is employed for a typical connection. Therefore, the noise filter 3 of the present modification can improve the assembly workability while suppressing an increase in physique.

  Furthermore, even if an external force is applied to the first electric wire WE1 or the second electric wire WE2 by the first engagement protrusion 924 and the second engagement protrusion 925, the noise filter 3 of the present modified example has electric power. The electrical connection state between the connection portions 912b and 931b and the electrical connection state between the electrical connection portions 913b and 941b can be held. Therefore, the noise filter 3 of the present modification can improve the energization quality.

  Further, the wire harness WH of the present modified example includes such a noise filter 3, and the effect of obtaining the noise filter 3 can be obtained.

[Noise filter mounting structure]
The mounting structure of the noise filters 1, 2, and 3 of the above-described embodiment and Modifications 1 and 2 to the other party will be described.

  In any of the noise filters 1, 2, 3, the filter circuit, the first electrical connection structure, the second electrical connection structure, the intermediate connection portion WEa1 of the first electric wire WE1, and the intermediate connection portion WEa2 of the second electric wire WE2 are provided. A housing is provided that is housed in an inner housing room and pulls out the respective end sides of the first electric wire WE1 and the second electric wire WE2 that run in the housing room out of the housing room. In the following, the housing of each of the noise filters 1, 2, and 3 is referred to as a housing Ca for convenience of description (FIGS. 35 to 38).

  The casing Ca includes a first protruding holder Ca1 for holding itself in the main line WT by winding the first tape Ta1 around the main line WT including the first electric wire WE1 and the second electric wire WE2; A second protruding holder Ca2 for holding itself in the main line WT by winding the second tape Ta2 around the main line WT (FIGS. 35 and 36).

  The first protruding holder Ca1 is a protruding body protruding outside one of the housing chambers in one of the axial directions of the first electric wire WE1 and the second electric wire WE2. The first protruding holder Ca1 is branched from the trunk WT on one end side of each of the first electric wire WE1 and the second electric wire WE2 drawn out of the accommodation chamber in the first protruding direction. It has an opposing arrangement part Ca11 arranged to oppose the first branch part WEd of each of the first electric wire WE1 and the second electric wire WE2 (FIGS. 35 and 36). Further, the first protruding holder Ca1 has a tape attaching section Ca12 for attaching the first tape Ta1 on the side opposite to the first branch section WEd (FIGS. 35 and 36). That is, the housing Ca has the first branch portions WEd interposed between the first protruding holder Ca1 and the trunk WT, and the first protruding holder Ca1 and the trunk WT are bundled together. The first protrusion holder Ca1 and the main line WT are wound together with the first tape Ta1.

  The first protruding holder Ca1 in this example is formed in a rectangular flat plate shape, and one of the planes is used as the facing arrangement part Ca11, and the other plane is used as the tape attaching part Ca12. Further, the first protruding holder Ca1 in this example has ribs Rb vertically suspended from the outer wall surface of the housing Ca and the facing arrangement portion Ca11 in order to secure strength (FIGS. 35 and 36). ). The illustrated rib Rb is interposed between the first branch portions WEd.

  In addition, the second projecting holder Ca2 is a projecting member that projects outside the accommodation room toward the other second projecting direction in the axial direction of the first electric wire WE1 and the second electric wire WE2. The second protruding holder Ca2 is branched from the main line WT on the other end side of each of the first electric wire WE1 and the second electric wire WE2 drawn out of the accommodation chamber in the second protruding direction. It has an opposing arrangement portion Ca21 arranged to oppose the second branch portion WEe of each of the first electric wire WE1 and the second electric wire WE2 (FIGS. 35 and 36). Further, the second protruding holder Ca2 has a tape attaching portion Ca22 for attaching the second tape Ta2 on the side opposite to the respective second branch portions WEe (FIGS. 35 and 36). That is, the housing Ca has the second branch portions WEe interposed between the second protruding holder Ca2 and the trunk WT, and the second protruding holder Ca2 and the trunk WT are bundled together. The second projecting holder Ca2 and the trunk WT are wound together with the second tape Ta2.

  The illustrated second protruding holder Ca2 is formed in a rectangular flat plate shape, and one of the planes is used as the facing arrangement section Ca21, and the other plane is used as the tape attaching section Ca22. In addition, the second protruding holder Ca2 in this example has ribs Rb vertically suspended from the outer wall surface of the housing Ca and the facing arrangement portion Ca21 in order to secure strength (FIGS. 35 and 36). ). The illustrated rib Rb is interposed between the respective second branch portions WEe.

  Since the housing Ca has such first protruding holders Ca1 and second protruding holders Ca2, a load is applied to each of the first branch portions WEd and each of the second branch portions WEe. The first tape Ta1 and the second tape Ta2 can be held in the main line WT without any trouble. That is, the housing Ca suppresses the transmission of the load to the filter circuit side via each of the first branch portions WEd and each of the second branch portions WEe, and suppresses the transmission of the first tape Ta1 and the second tape Ta2. It can be held in the main line WT. Therefore, the noise filters 1, 2, and 3 including the casing Ca can improve the quality of energization. Then, in the wire harness WH, by applying the casing Ca to the noise filters 1, 2, and 3, the energization quality can be improved in the same manner as the noise filters 1, 2, and 3.

  Here, this casing Ca may be provided with a so-called anchor-type clip CLi protruding from the outer wall surface as a holder to be held against the installation object (FIGS. 35 and 36). For example, this casing Ca inserts the anchor-type clip CLi into the through-hole Bd1 of the vehicle body Bd as an installation target, and locks the anchor-type clip CLi around the periphery of the through-hole Bd1, thereby forming the trunk line WT. Can be held by the vehicle body Bd.

  In addition, the casing Ca may be provided with a holding body Cah that holds a rectangular piece Bd2 of the vehicle body Bd as an installation target as a holding body that holds the installation target object (FIG. 37). The holding body Cah has, for example, an outer wall surface Cah1 of the housing Ca, and a cantilevered flexible piece Cah2 that is arranged to face the outer wall surface Cah1 at an interval. In the holding body Cah, one plane of the one-sided part Bd2 is arranged to face the outer wall surface Cah1, and the other plane of the one-sided part Bd2 is arranged to face the flexible piece Cah2. By inserting the piece Bd2 between the outer wall surface Cah1 and the flexible piece Cah2, the holding body Cah bends the flexible piece Cah2 in a direction away from the outer wall face Cah1, and resists the bending. The reacting force is applied to the other flat surface of the piece Bd2 from the claw or the like on the free end side of the flexible piece Cah2. As a result, the holding body Cah causes the piece Bd2 to be held between the outer wall surface Cah1 and the flexible piece Cah2. Therefore, the housing Ca can be held by the vehicle body Bd while being held by the trunk line WT.

  In addition, this casing Ca may have a band clamp structure BC that is wound around the main line WT and holds itself in place of the first projecting holder Ca1 and the second projecting holder Ca2 for winding the tape. (FIG. 38). The band clamp structure BC includes a band portion BC1 wound around the main line WT. In the band portion BC1, a plurality of rectangular through holes BC11 are formed at intervals along the longitudinal direction, and a locking portion BC12 connected to the through hole BC11 in the longitudinal direction is provided with each of the through holes BC11. Is formed. In this band clamp structure BC, the band portion BC1 wound around the main line WT is inserted into the insertion portion BC2 of the other end from the tip, and the projection (not shown) provided on the insertion portion BC2 is inserted into the through hole BC11 of the band portion BC1. By inserting, the protrusion is locked to the locking portion BC12 of the band portion BC1. Thus, the band clamp structure BC allows the body Ca to be held by the body Bd while holding the casing Ca in the trunk line WT.

  The band clamp structure BC is provided in the casing Ca at a position where a load is not applied to each of the first branch portions WEd and each of the second branch portions WEe when wound around the main line WT. Therefore, in the noise filters 1, 2, and 3 provided with the casing Ca, the energization quality can be improved similarly to the tape winding structure. Then, in the wire harness WH, by applying the casing Ca to the noise filters 1, 2, and 3, the energization quality can be improved in the same manner as the noise filters 1, 2, and 3.

1, 1A, 1B, 1C, 1D, 1E, 1F, 2, 2A, 2B, 2C, 3 Noise filter 10, 610, 710, 810, 910 Filter circuit 11 Noise reduction element 12, 312, 512, 612, 712, 812,912 First circuit connection member 13,313,513,613,713,813,913 Second circuit connection member 30,330,430,530,630,730,830,930 First electrical connection structure 31,931 1 wire side connection body 32, 332, 532, 932 first circuit side connection body 40, 340, 440, 540, 640, 740, 840, 940 second electric connection structure 41, 941 second wire side connection body 42, 342 , 542, 942 Second circuit side connection body 610A, 710A Main filter circuit 610B, 710B Sub filter circuit 630A 730A, 830A First electric connection member 631, 731, 831 First electric wire side connection portion 632, 732, 832 First circuit side connection portion 640A, 740A, 840A Second electric connection member 641, 741, 841 Second electric wire side connection Part 642, 742, 842 Second circuit side connection part BC Band clamp structure Ca Casing Ca1 First protruding holder Ca2 Second protruding holder Ca11, Ca21 Opposing arrangement part Ca12, Ca22 Tape sticking part Ta1 First tape Ta2 Second Tape WE1 First electric wire WEa1 Intermediate connecting part WE2 Second electric wire WEa2 Intermediate connecting part WEa Core wire WEd First branch part WEe Second branch part WH Wire harness WT Trunk line

Claims (8)

A noise reduction element for reducing a noise component, a conductive first circuit connection member electrically connected to the first connection part of the noise reduction element, and a second connection part of the noise reduction element are electrically connected. A filter circuit including a conductive second circuit connecting member;
A first electrical connection structure for electrically connecting an intermediate connection portion of a core of the first electric wire to the first circuit connection member;
A second electrical connection structure for electrically connecting an intermediate connection portion of a core wire of a second electric wire whose one end is grounded to the second circuit connection member;
A noise filter comprising: The first electric connection structure includes: a first electric wire side connection body physically and electrically connected to the intermediate connection portion of the core wire of the first electric wire; a first electric wire side connection body; A first circuit-side connection body physically and electrically connected to the one circuit connection member,
The second electric connection structure includes: a second electric wire side connection body physically and electrically connected to the intermediate connection portion of the core wire of the second electric wire; The noise filter according to claim 1, further comprising: a second circuit-side connection body physically and electrically connected to the two-circuit connection member. The first electric connection structure includes a first circuit-side connection member provided on the first circuit connection member, and indirectly or directly electrically connected to the intermediate connection portion of the core wire of the first electric wire,
The second electric connection structure may include a second circuit-side connection body provided on the second circuit connection member, and indirectly or directly electrically connected to the intermediate connection portion of the core wire of the second electric wire. The noise filter according to claim 1, wherein: The first electric connection structure includes a first electric wire side connection portion physically and electrically connected to the intermediate connection portion of the core wire of the first electric wire, and a physical connection to the first circuit connection member. And a first circuit-side connection portion to be electrically and electrically connected, and
The second electric connection structure includes a second electric wire side connection portion physically and electrically connected to the intermediate connection portion of the core wire of the second electric wire, and a physical connection to the second circuit connection member. The noise filter according to claim 1, wherein the second filter is a second electrical connection member having a second circuit-side connection portion that is electrically and electrically connected. The first electric connection structure includes a first electric wire side connection body and a first circuit side, which are electrically connected to each other by being inserted and fitted along the axial direction of the first electric wire and the second electric wire which run in parallel. With a connecting body,
The first wire-side connector is physically and electrically connected to the intermediate connection portion of the core wire of the first wire,
The first circuit-side connection body is provided on the first circuit connection member,
The second electric connection structure includes a second electric wire side connection body and a second circuit side that are electrically connected to each other by being inserted and fitted along the axial direction of the first electric wire and the second electric wire that have run in parallel. With a connecting body,
The second electric wire side connection body is physically and electrically connected to the intermediate connection portion of the core wire of the second electric wire,
The noise filter according to claim 1, wherein the second circuit-side connection body is provided on the second circuit connection member. An inner accommodation room for the filter circuit, the first electrical connection structure, the second electrical connection structure, and the intermediate connection portion of the core wire of the first electric wire and the intermediate connection portion of the core wire of the second electric wire. A housing that pulls out the respective end sides of the first electric wire and the second electric wire that are moved in the accommodation room out of the accommodation room,
The housing is a protruding body that protrudes outside the accommodation room in a first protruding direction in one of the axial directions of the first electric wire and the second electric wire, and the first electric wire and the second electric wire. A first protruding holder for holding itself in the trunk by winding the first tape around the trunk including the two electric wires, and an axis of the first electric wire and the second electric wire outside the accommodation chamber A second projecting holder projecting toward the other second projecting direction of the second direction, and a second projecting holder for holding itself in the main line by winding a second tape together with the main line. , And
The first protruding holder is at one end of each of the first electric wire and the second electric wire drawn out of the accommodation chamber in the first protruding direction, and branches off from the main line. An opposing arrangement portion opposing the first branch portion of each of the first electric wire and the second electric wire, and a tape sticking portion for sticking the first tape on a side opposite to the first branch portion. And having
The second protruding holder is at the other end of each of the first electric wire and the second electric wire drawn out of the accommodation chamber in the second protruding direction, and branches from the main line. A facing portion disposed to face the second branch portion of each of the first electric wire and the second wire, and a tape sticking portion for sticking the second tape on a side opposite to the second branch portion. The noise filter according to any one of claims 1 to 5, comprising: An inner accommodation room for the filter circuit, the first electrical connection structure, the second electrical connection structure, and the intermediate connection portion of the core wire of the first electric wire and the intermediate connection portion of the core wire of the second electric wire. A housing that pulls out the respective end sides of the first electric wire and the second electric wire that are moved in the accommodation room out of the accommodation room,
The noise according to any one of claims 1 to 5, wherein the casing has a band clamp structure that is wound around a trunk line including the first electric wire and the second electric wire to hold itself. filter. A main line including a first electric wire and a second electric wire;
A noise filter that reduces noise components,
With
The noise filter includes:
A noise reduction element for reducing a noise component, a conductive first circuit connection member electrically connected to the first connection part of the noise reduction element, and a second connection part of the noise reduction element are electrically connected. A filter circuit including a conductive second circuit connecting member;
A first electrical connection structure for electrically connecting an intermediate connection portion of a core of the first electric wire to the first circuit connection member;
A second electrical connection structure for electrically connecting an intermediate connection portion of a core wire of the second electric wire, one end of which is grounded, to the second circuit connection member;
A wire harness comprising:

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