connector

Abstract

To enhance a noise reduction effect while suppressing increase in a size of a physical constitution.SOLUTION: A connector includes a terminal fitting 10 having a plurality of cantilevered terminal portions 12 and a ferrite core 20 for each terminal portion, a first housing 30 provided with a holder 31 for holding them, and a second housing 40 for accommodating the holder. The holder has core accommodating chambers 33 and 34 for accommodating the ferrite cores to be inserted along a hole axis direction of through holes 21. The core accommodating chambers have first core locking portions 33b and 34B which lock end portions of the ferrite cores which are opposite to core insertion ports 33a and 34a of the ferrite cores. The second housing includes a housing accommodation chamber 42 for accommodating the holder, and a terminal accommodating chamber 43 for accommodating a free end side of the terminal portion protruding from the holder, second core locking portions 45A and 45B which are arranged to face the end portions on the core insertion port side of the ferrite cores, and a housing insertion port of 40a through which the holder is inserted along a direction orthogonal to the hole axial direction.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a connector. [Background technology]

[0002] Conventionally, in a connector, a technique is known in which a terminal in a housing is inserted into a ferrite core in order to attenuate noise currents. This connector is disclosed, for example, in Patent Document 1 listed below. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-025914 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, this type of connector requires a chamber for accommodating the ferrite core in the housing and a holding structure for holding the ferrite core in the housing, which may lead to an increase in size. For example, in the connector described in the above Patent Document 1, an inner housing for holding the ferrite core is accommodated in two housings assembled together. For this reason, in order to reduce noise with the ferrite core in the connector, it is necessary to suppress the increase in size by optimizing the chamber and holding structure.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a connector that can enhance noise reduction effects while preventing an increase in size. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a terminal fitting having a base and a plurality of cantilevered terminal portions protruding from the base, a ferrite core provided for each of the terminal portions and having a through hole through which the terminal portion can be inserted in the protruding direction, a first housing provided with a holder for holding the terminal fitting and the ferrite core, and a second housing to which the first housing is assembled and which accommodates the holder together with the terminal fitting and the ferrite core at an assembly completion position, the holder having a chamber for each of the ferrite cores in which the ferrite cores with the terminal portions inserted therethrough are accommodated and held, the holder having a core accommodating chamber provided with a core insertion opening through which the ferrite cores are inserted along the axial direction of the through hole, the core accommodating chamber having a front end of the ferrite core accommodated in the chamber, The second housing has a first core locking portion at which the end opposite the core insertion port is locked, and the second housing has a housing accommodating chamber that accommodates the retainer when the assembly with the first housing is completed, a terminal accommodating chamber in which the free end side of the terminal portion protruding from the retainer is accommodated when the assembly with the first housing is completed, a second core locking portion that is positioned opposite the end of the ferrite core on the core insertion port side when the assembly with the first housing is completed and locks the movement of the ferrite core toward the core insertion port side, and a housing insertion port that is an opening that allows the retainer to be inserted into the housing accommodating chamber together with the terminal fitting and the ferrite core along a direction perpendicular to the hole axial direction, and is closed by the first housing when the assembly with the first housing is completed. Effect of the Invention

[0007] In the connector according to the present invention, a core accommodating chamber that accommodates and holds a ferrite core is provided in the first housing. In this connector, the first housing and the second housing are assembled together, and the first core locking portion of the first housing and the second core locking portion of the second housing prevent the ferrite core from falling out of the core accommodating chamber. Therefore, the connector according to the present invention does not need to have an inner housing for holding the ferrite core between the two housings as in the conventional connector, and therefore can reduce the number of parts and prevent the connector from becoming too large while improving the noise reduction effect. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a connector according to an embodiment. [Diagram 2] FIG. 2 is a plan view of the connector according to the embodiment, as viewed from the terminal insertion port side. [Diagram 3] FIG. 3 is a cross-sectional view taken along line X1-X1 of FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line X2-X2 of FIG. [Diagram 5] FIG. 5 is a cross-sectional view taken along line YY in FIG. 2, rotated 90 degrees. [Figure 6] FIG. 6 is an exploded perspective view showing the connector of the embodiment. [Figure 7] 7 is a cross-sectional view taken along line X1-X1 of FIG. [Figure 8] FIG. 8 is a cross-sectional view taken along line X2-X2 of FIG. [Figure 9] FIG. 9 is an exploded perspective view showing the connector after the ferrite core is assembled. [Figure 10] FIG. 10 is a cross-sectional view taken along line X1-X1 of FIG. [Figure 11] FIG. 11 is a cross-sectional view taken along line X2-X2 of FIG. [Figure 12] FIG. 12 is an exploded perspective view showing the connector after the terminal fittings are attached. [Figure 13] FIG. 13 is a cross-sectional view taken along line X1-X1 of FIG. [Figure 14]FIG. 14 is a cross-sectional view taken along line X2-X2 of FIG. [Figure 15] FIG. 15 is a plan view of the first housing as viewed from the first core accommodating chamber side. [Figure 16] FIG. 16 is a plan view of the first housing as viewed from the second core accommodating chamber side. [Figure 17] FIG. 17 is a perspective view showing the first housing. [Figure 18] FIG. 18 is an explanatory diagram illustrating an application example of the connector according to the embodiment. [Figure 19] FIG. 19 is a perspective view showing a connector of the first modification. [Figure 20] FIG. 20 is a plan view of the connector of the first modification example as viewed from the first terminal insertion opening side. [Figure 21] FIG. 21 is a cross-sectional view taken along line XX in FIG. [Figure 22] FIG. 22 is a cross-sectional view taken along line YY in FIG. 20 rotated 90 degrees. [Figure 23] FIG. 23 is an exploded perspective view showing the connector of the first modification. [Figure 24] FIG. 24 is a cross-sectional view taken along line XX in FIG. [Diagram 25] FIG. 25 is an exploded perspective view showing the connector after the terminal fittings are attached. [Figure 26] FIG. 26 is a cross-sectional view taken along line XX in FIG. [Figure 27] FIG. 27 is an exploded perspective view showing the connector after the ferrite core is assembled. [Figure 28] FIG. 28 is a cross-sectional view taken along line XX in FIG. [Figure 29] FIG. 29 is a plan view of the first housing as viewed from the first core accommodating chamber side. [Diagram 30] FIG. 30 is a plan view of the first housing as viewed from the second core accommodating chamber side. [Diagram 31] FIG. 31 is a perspective view showing a connector of the second modification. [Diagram 32] FIG. 32 is a plan view of the connector of the second modification seen from the first terminal insertion opening side. [Diagram 33] FIG. 33 is a cross-sectional view taken along line XX in FIG. [Diagram 34] FIG. 34 is a cross-sectional view taken along line YY in FIG. 32 rotated 90 degrees. [Diagram 35] FIG. 35 is an exploded perspective view showing a connector of the second modification. [Diagram 36] FIG. 36 is a cross-sectional view taken along line XX in FIG. [Figure 37] FIG. 37 is a cross-sectional view taken along line YY in FIG. 35 (excluding the second housing) rotated 90 degrees. [Figure 38] FIG. 38 is an exploded perspective view showing the connector after the terminal fittings are attached. [Figure 39] FIG. 39 is a cross-sectional view taken along line YY in FIG. 38 (excluding the second housing) rotated 90 degrees. [Diagram 40] FIG. 40 is an exploded perspective view showing the connector after the ferrite core is assembled. [Diagram 41] FIG. 41 is a cross-sectional view taken along line YY in FIG. 40 (excluding the second housing) rotated 90 degrees. [Diagram 42] FIG. 42 is a plan view of the first housing as viewed from the first core accommodating chamber side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a connector according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to this embodiment.

[0010] [Embodiment] One embodiment of a connector according to the present invention will be described with reference to FIGS.

[0011] Reference numeral 1 in FIGS. 1 to 17 denotes a connector of this embodiment.

[0012] The connector 1 includes a terminal fitting 10, a ferrite core 20, a first housing 30, and a second housing 40 (FIGS. 2 to 8, 10, 11, 13, and 14).

[0013] The connector 1 shown here is exemplified as a joint connector that electrically connects between a first device (not shown) and a second device (not shown). For example, this connector 1 is interposed between an electric wire We1 electrically connected to a first device in an engine compartment of a vehicle and an electric wire We2 electrically connected to a second device on an instrument panel of the vehicle, and the electric wires We1 and We2 are electrically connected to each other, thereby electrically connecting the first device side and the second device side (FIG. 18). Also, for example, this connector 1 is interposed between an electric wire We1 electrically connected to a first device on or under the floor of a vehicle and an electric wire We2 electrically connected to a second device on an instrument panel of the vehicle, and the electric wires We1 and We2 are electrically connected to each other, thereby electrically connecting the first device side and the second device side (FIG. 18).

[0014] The terminal fitting 10 is made of a conductive material such as metal. The terminal fitting 10 has a base 11 and a plurality of cantilevered terminal portions 12 protruding from the base 11 (FIGS. 3 to 14). The terminal fitting 10 of this embodiment has a plurality of terminal portions 12 protruding from the base 11 in a first direction and arranged at intervals in a terminal arrangement direction perpendicular to the first direction. For example, in the terminal fitting 10, at least one of the plurality of terminal portions 12 is electrically connected to the first device side, and the remaining terminal portions 12 are electrically connected to the second device side.

[0015] The base 11 is a connecting portion that connects all the terminal portions 12 of the terminal fitting 10. The base 11 shown here is formed in a rectangular flat plate shape.

[0016] The terminal portion 12 is physically and electrically connected to a mating terminal fitting (not shown) attached to an end of the electric wire We1 on the first device side by fitting and connecting it, and is electrically connected to the first device side through the mating terminal fitting and the electric wire We1. The terminal portion 12 is physically and electrically connected to a mating terminal fitting (not shown) attached to an end of the electric wire We2 on the second device side by fitting and connecting it, and is electrically connected to the second device side through the mating terminal fitting and the electric wire We2. The terminal portion 12 shown here is an axial male terminal portion whose axial direction is the protruding direction (first direction) from the base portion 11 (FIGS. 3 to 14). The protruding direction of the terminal portion 12 is the insertion direction into the mating terminal fitting, and the terminal portion 12 is fitted and connected to the mating terminal fitting having a female terminal shape. The terminal portion 12 shown here is protruding in the first direction from one side of the base portion 11 on the same plane as the base portion 11 on the first direction side.

[0017] In the terminal fitting 10 shown here, four terminal portions 12 are arranged at intervals in the terminal arrangement direction (FIGS. 6 and 9). The terminal portions 12 are arranged at equal intervals (equal pitch) between adjacent ones.

[0018] In the connector 1 of this embodiment, the terminal fittings 10 are arranged at intervals in a fitting arrangement direction perpendicular to the first direction and the terminal arrangement direction (FIGS. 3, 4, and 6 to 14). That is, the connector 1 includes a plurality of terminal fittings 10 arranged at intervals in the fitting arrangement direction. In the plurality of terminal fittings 10, the respective terminal portions 12 arranged at the same positions on the respective base portions 11 are arranged in the fitting arrangement direction. Thus, in the plurality of terminal fittings 10, four combinations of the plurality of terminal portions 12 arranged in the fitting arrangement direction are provided. Here, the fitting arrangement direction corresponds to the insertion direction of a holding body 31 (described later) of the first housing 30 into a housing accommodating chamber 42 (described later) of the second housing 40.

[0019] As described above, the mating terminal fitting attached to the end of the electric wire We1 or the mating terminal fitting attached to the end of the electric wire We2 is physically and electrically connected to this terminal portion 12. In the connector 1 of this embodiment, the pair of electric wires We1 (electric wires We2) and the mating terminal fittings may be connected to the terminal portion 12 one by one, or a mating connector in which the combination of the pair of electric wires We1 and the mating terminal fittings and the combination of the pair of electric wires We2 and the mating terminal fittings are provided for each of the multiple terminal portions 12 may be fitted and connected. Here, the respective mating terminal fittings are fitted and connected to the terminal portions 12 using the mating connector.

[0020] For example, to enhance the noise reduction effect, the connector 1 of this embodiment is electrically connected to a twisted pair electric wire (not shown) in which two electric wires are twisted together. One of the two terminals 12 on the first device side adjacent to each other in the metal fitting arrangement direction is electrically connected to one of the two terminals 12, and the other of the two terminals is electrically connected to the other of the two terminals. In addition, one of the two terminals 12 on the second device side adjacent to each other in the metal fitting arrangement direction is electrically connected to one of the two terminals 12, and the other of the two terminals is electrically connected to the other of the two terminals.

[0021] The connector 1 shown here includes two terminal fittings 10. In the connector 1 shown here, for each combination of two terminal parts 12 arranged in the fitting arrangement direction, a twisted pair electric wire on the first device side or a twisted pair electric wire on the second device side is electrically connected via a mating terminal fitting.

[0022] The ferrite core 20 is a member formed from a magnetic body (ferrite) and is provided as a noise filter member for reducing noise. The ferrite core 20 has a through hole 21 through which the terminal portion 12 can be inserted in the protruding direction in order to attenuate the noise current flowing through the terminal portion 12 (FIGS. 3, 4, 6 to 8, 10, 11, 13, and 14). The ferrite core 20 is provided for each terminal portion 12 (FIG. 6).

[0023] The ferrite core 20 of this embodiment is provided for each combination of multiple terminal parts 12 arranged in the metal fitting arrangement direction (FIGS. 3, 4, 6 to 8, 10, 11, 13, and 14). In this ferrite core 20, through holes 21 are formed and aligned in the metal fitting arrangement direction for each of the multiple terminal fittings 10 (FIG. 6). The ferrite core 20 shown here is provided one for each combination of two terminal parts 12 arranged in the metal fitting arrangement direction. In other words, the connector 1 shown here has four ferrite cores 20 for the terminal parts 12.

[0024] For example, the ferrite core 20 shown here is a square-shaped molded body with a rectangular cross section perpendicular to the axial direction (first direction, second direction) of the through hole 21, and is arranged with the longitudinal direction of the rectangle aligned with the metal fitting arrangement direction. The ferrite core 20 shown here has two through holes 21 arranged with a gap between them in the metal fitting arrangement direction.

[0025] The first housing 30 and the second housing 40 are each molded from an insulating material such as synthetic resin. In this connector 1, the terminal fittings 10 and the ferrite core 20 are assembled and held in the first housing 30. In this connector 1, an assembly consisting of the first housing 30 and the like is inserted into the second housing 40 through a housing insertion opening 40a, and the terminal fittings 10 and the ferrite core 20 are accommodated inside the assembled first housing 30 and second housing 40 (FIGS. 3, 4, 6 to 8, 10, 11, 13, and 14). A locking mechanism (not shown) is provided between the first housing 30 and the second housing 40, using a claw or the like to hold them in the assembled position.

[0026] The first housing 30 is provided with a holder 31 that holds the terminal fitting 10 and the ferrite core 20 (FIGS. 3 to 16). Furthermore, the first housing 30 is provided with a cover 32 that closes the housing insertion opening 40a of the second housing 40 (FIGS. 1, 3, 4, and 6 to 16).

[0027] In the holder 31, the terminal fitting 10 is inserted in a first direction from the free end side of the terminal portion 12 (FIGS. 6 to 14). The holder 31 has an accommodation chamber (hereinafter referred to as a "core accommodation chamber") for each ferrite core 20 in which the ferrite core 20 with the terminal portion 12 inserted therethrough is accommodated and held. The core accommodation chamber is provided with a core insertion opening for inserting the ferrite core 20 along the axial direction of the through hole 21, and a first core locking portion for locking the end of the ferrite core 20 accommodated in the chamber on the opposite side to the core insertion opening. The holder 31 of this embodiment has, as its core accommodating chambers, a first core accommodating chamber 33 that accommodates and holds a ferrite core 20 (hereinafter referred to as a "first ferrite core 20A") through which one of two adjacent terminal portions 12 in the terminal arrangement direction is to be inserted, and a second core accommodating chamber 34 that accommodates and holds a ferrite core 20 (hereinafter referred to as a "second ferrite core 20B") through which the other of the two adjacent terminal portions 12 is to be inserted (FIGS. 3 to 5, 7, 8, 10, 11, 13, and 14 to 16). In the holder 31 shown here, the first core accommodating chambers 33 and the second core accommodating chambers 34 are alternately arranged along the terminal arrangement direction of the terminal portions 12 of the terminal fittings 10.

[0028] The first core accommodating chamber 33 is provided with a core insertion opening 33a for inserting the first ferrite core 20A into the chamber in the second direction, and a first core locking portion 33b for locking the end of the first ferrite core 20A in the chamber on the second direction side (FIGS. 3, 7, 10, and 13). The first core accommodating chamber 33 also accommodates the portion of the first ferrite core 20A inserted into the through hole 21 in the terminal portion 12. The second core accommodating chamber 34 is provided with a core insertion opening 34a for inserting the second ferrite core 20B into the chamber in the first direction, and a first core locking portion 34b for locking the end of the second ferrite core 20B in the chamber on the first direction side (FIGS. 4, 8, 11, and 14). The second core accommodating chamber 34 also accommodates the portion of the second ferrite core 20B inserted into the through hole 21 in the terminal portion 12.

[0029] In this connector 1, all the terminal parts 12 of the terminal fittings 10 are protruded in a first direction from the holding body 31, and the protruding parts of the terminal parts 12 become terminal connection parts that are fitted and connected to the mating terminal fittings. The holding body 31 shown here is formed so that the terminal fittings 10 are inserted in the first direction from the core insertion opening 34a side of the second core accommodating chamber 34, and the terminal parts 12 of the terminal fittings 10 are protruded beyond the core insertion opening 33a of the first core accommodating chamber 33. Therefore, the holding body 31 has a through hole (hereinafter referred to as a "terminal insertion hole") 31a through which the terminal parts 12 of the terminal fittings 10 inserted in the first direction from the core insertion opening 34a side of the second core accommodating chamber 34 are inserted into the core insertion opening 33a side of the first core accommodating chamber 33 (FIGS. 5, 15, and 16). The terminal insertion hole 31a is formed for each terminal part 12.

[0030] If the terminal portion 12 to be inserted through the through hole 21 of the first ferrite core 20A in the first core accommodating chamber 33 is to be placed in the first core accommodating chamber 33, the terminal insertion hole 31a communicates the second core accommodating chamber 34 with the first core accommodating chamber 33 so that the terminal portion 12 is guided to the first core accommodating chamber 33 at a position outside the second ferrite core 20B in the second core accommodating chamber 34. If the terminal portion 12 to be inserted through the through hole 21 of the second ferrite core 20B in the second core accommodating chamber 34 is to be placed in the second core accommodating chamber 34, the terminal insertion hole 31a communicates the second core accommodating chamber 34 with the outside of the holder 31 on the first core accommodating chamber 33 side without passing through the first core accommodating chamber 33 so that the terminal portion 12 is guided to the outside of the holder 31 without passing through the first core accommodating chamber 33.

[0031] The first ferrite core 20A is held in the first core accommodating chamber 33. The second ferrite core 20B is held in the second core accommodating chamber 34. Therefore, the first core accommodating chamber 33 and the second core accommodating chamber 34 are each provided with a holding portion 35 for holding the ferrite core 20 (the first ferrite core 20A and the second ferrite core 20B) (FIGS. 15 to 17). The holding portion 35 is a protrusion that holds the peripheral wall of the ferrite core 20 from all sides, and is provided for each of the first core accommodating chamber 33 and the second core accommodating chamber 34. The holding portion 35 shown here is roughly divided into a pair of first holding portions 35A that hold both flat surfaces extending in the longitudinal direction (the metal fitting arrangement direction) of the ferrite core 20 and a pair of second holding portions 35B that hold both flat surfaces extending in the lateral direction (the terminal arrangement direction) of the ferrite core 20 (FIGS. 15 to 17). Here, two sets of the pair of first holding parts 35A and the pair of second holding parts 35B are provided. The first holding parts 35A and the second holding parts 35B are formed in the shape of ribs extending in the insertion direction of the ferrite core 20.

[0032] The pair of first retaining portions 35A protrude toward the room side from a terminal arrangement direction wall (hereinafter referred to as a "first wall") 36A that forms the first core accommodating chamber 33 or the second core accommodating chamber 34 so as to face each other in the terminal arrangement direction (FIGS. 15 to 17). The pair of second retaining portions 35B protrude toward the room side from a metal fitting arrangement direction wall (hereinafter referred to as a "second wall") 36B that forms the first core accommodating chamber 33 or the second core accommodating chamber 34 so as to face each other in the metal fitting arrangement direction (FIGS. 15 to 17).

[0033] In the first housing 30, a plurality of first core accommodating chambers 33 and a plurality of second core accommodating chambers 34 are arranged in the terminal arrangement direction, and the base 11 of the terminal fitting 10 is accommodated across the plurality of second core accommodating chambers 34. For this reason, a fitting groove 36a is formed in a first wall 36A in the terminal arrangement direction that forms the second core accommodating chamber 34, into which the base 11 is inserted from the core insertion opening 34a (FIGS. 3 to 5, 7, 8, 10, 11, 13, 14, 16, and 17). The fitting groove 36a is a groove that extends in the first direction from an end face on the second direction side of the first wall 36A, and is formed with a groove width that allows the base 11 to be sandwiched from each plane.

[0034] The holder 31 shown here is formed in a rectangular shape. In this holder 31, a core insertion opening 33a of the first core accommodating chamber 33 is formed in one of six wall surfaces, and a core insertion opening 34a of the second core accommodating chamber 34 is formed in the wall surface opposite to the first wall surface in the second direction.

[0035] The retainer 31 is inserted into the second housing 40 together with the assembled terminal fittings 10 and ferrite core 20 (first ferrite core 20A, second ferrite core 20B) in a direction perpendicular to the axial direction of the through hole 21 of the ferrite core 20. Here, the assembled body consisting of the retainer 31 etc. is inserted in a direction perpendicular to the first direction and the terminal arrangement direction (the fitting arrangement direction). Thus, in the first housing 30, a lid 32 is provided on the wall surface of the retainer 31 on the opposite side to the insertion direction into the second housing 40. The lid 32 shown here is formed in a rectangular flat plate shape that matches the shape of the rectangular housing insertion opening 40a of the second housing 40.

[0036] The second housing 40 accommodates the retainer 31 together with the terminal fitting 10 and the ferrite core 20 (first ferrite core 20A, second ferrite core 20B) at the position where assembly with the first housing 30 is completed. This second housing 40 has a cylindrical (here, rectangular cylindrical) main body 41 whose cylindrical axis direction coincides with the axial direction (first direction) of the terminal portion 12 and the hole axis direction of the through hole 21 of the ferrite core 20, and accommodates the terminal fitting 10, the ferrite core 20, and the retainer 31 of the first housing 30 inside this main body 41 (FIGS. 1 to 14).

[0037] The second housing 40 has an accommodation chamber (hereinafter referred to as the "housing accommodation chamber") 42 that accommodates the retainer 31 when the second housing 40 is in the assembled position with the first housing 30 (FIGS. 3 to 14). Furthermore, the second housing 40 has an accommodation chamber (hereinafter referred to as the "terminal accommodation chamber") 43 that accommodates the free end side of the terminal portion 12 protruding from the retainer 31 when the second housing 40 is in the assembled position with the first housing 30 (FIGS. 2 to 5, 7, 8, 10, 11, 13, and 14). The second housing 40 has a partition wall 44 that separates the housing accommodation chamber 42 from the terminal accommodation chamber 43 (FIGS. 2 to 5, 7, 8, 10, 11, 13, and 14).

[0038] In the second housing 40, a rectangular housing insertion opening 40a is formed in one wall 41a of the main body 41 (FIGS. 3, 4, 6 to 14). The housing insertion opening 40a is an opening through which the holder 31 is inserted together with the terminal fitting 10 and the ferrite core 20 (first ferrite core 20A, second ferrite core 20B) into the housing accommodating chamber 42 along the previous insertion direction, and the free end side of the terminal portion 12 protruding from the holder 31 is inserted into the terminal accommodating chamber 43 along the previous insertion direction. In the second housing 40, the holder 31 to which the terminal fitting 10 and the ferrite core 20 are assembled is inserted from the housing insertion opening 40a toward another wall 41b of the main body 41 that is disposed opposite to the wall 41a with a gap therebetween (FIGS. 3, 4, 7, 8, 10, 11, 13 and 14). The partition wall 44 is vertically disposed from the wall body 41b toward the housing insertion opening 40a (FIGS. 3, 4, 7, 8, 10, 11, 13, and 14).

[0039] This housing insertion opening 40a is closed by the first housing 30 when the first housing 30 and the second housing 40 are in the assembled position. Here, the cover 32 of the first housing 30 is fitted into the housing insertion opening 40a (FIGS. 3, 4, and 6 to 14).

[0040] The housing accommodating chamber 42 is a chamber connected to the housing insertion opening 40a, and the holder 31 is inserted through the housing insertion opening 40a together with the terminal fitting 10 and the ferrite core 20 (first ferrite core 20A, second ferrite core 20B). The housing accommodating chamber 42 shown here is formed as a rectangular space that matches the shape of the rectangular holder 31. In the second housing 40, one opening of the main body 41 arranged opposite the partition wall 44 is closed by a blocking wall 41c, and the blocking wall 41c is used together with the partition wall 44 as one of the walls that form the housing accommodating chamber 42 (FIGS. 1 and 3 to 14).

[0041] The terminal accommodating chamber 43 is a chamber that is connected to the housing insertion opening 40a, and the free end side of the terminal portion 12 protruding from the retainer 31 is inserted through the housing insertion opening 40a. For this reason, the partition wall 44 is formed with a groove portion (hereinafter referred to as an "escape groove") 44a for avoiding the terminal portion 12 during the process of assembling the first housing 30 and the second housing 40 (FIGS. 2 to 14). This escape groove 44a is provided for each combination of the multiple terminal portions 12 aligned in the metal fitting arrangement direction.

[0042] Moreover, this terminal accommodating chamber 43 is a chamber in which the terminal portion 12 inside the chamber is inserted and fitted into the mating terminal fitting by inserting the mating terminal fitting in the second direction from a terminal insertion port 43a (FIGS. 3 to 5, 7, 8, 10, 11, 13, and 14) on the other opening side of the main body 41. As described above, in the connector 1 shown here, the mating connector is inserted and fitted from the terminal insertion port 43a. Therefore, in this case, the other opening of the main body 41 is used as the terminal insertion port 43a when inserting the mating connector into the terminal accommodating chamber 43.

[0043] Furthermore, the second housing 40 has a second core locking portion that is disposed opposite the end of the ferrite core 20 on the core insertion openings 33a, 34a side when the second housing 40 is in the assembled position with the first housing 30, and locks the movement of the ferrite core 20 toward the core insertion openings 33a, 34a. The second housing 40 shown here has, as its second core locking portions, a second core locking portion 45A for the first ferrite core 20A and a second core locking portion 45B for the second ferrite core 20B (FIGS. 3 to 14).

[0044] The second core locking portion 45A for the first ferrite core 20A is disposed opposite the end of the first ferrite core 20A on the core insertion opening 33a side (first direction side) at the position where the first housing 30 and the second housing 40 are assembled, and is formed to lock the movement of the first ferrite core 20A toward the core insertion opening 33a side. The first ferrite core 20A shown here has its end on the core insertion opening 33a side (first direction side) disposed at a position equivalent to the core insertion opening 33a. For this reason, the second core locking portion 45A for the first ferrite core 20A shown here is formed as a wall body that covers and closes the core insertion opening 33a of the first core accommodating chamber 33 from the outside of the first core accommodating chamber 33. Here, the partition wall 44 is used as the second core locking portion 45A.

[0045] The second core locking portion 45B for the second ferrite core 20B is disposed opposite the end of the second ferrite core 20B on the core insertion opening 34a side (second direction side) at the position where the first housing 30 and the second housing 40 are assembled, and is formed to lock the movement of the second ferrite core 20B toward the core insertion opening 34a side. The end of the second ferrite core 20B on the core insertion opening 34a side (second direction side) is disposed closer to the interior of the second core accommodating chamber 34 than the core insertion opening 34a. Therefore, the second core locking portion 45B for the second ferrite core 20B shown here is inserted into the second core accommodating chamber 34 at the position where the first housing 30 and the second housing 40 are assembled, and is formed as a wall body disposed opposite the end of the second ferrite core 20B on the core insertion opening 34a side (second direction side) inside the second core accommodating chamber 34. In the second housing 40 shown here, a pair of walls for each second core accommodating chamber 34 sandwiching a plurality of terminals 12 arranged in the metal fitting arrangement direction therebetween are vertically arranged from a wall 41b of the main body 41 toward the housing insertion opening 40a. Here, the pair of walls is used as the second core locking portion 45A. This second core locking portion 45A is inserted into the second core accommodating chamber 34 while assembling the first housing 30 and the second housing 40. Therefore, in the holding body 31 of the first housing 30, a through hole 31d for inserting the second core locking portion 45A into the second core accommodating chamber 34 is formed in the second wall 36B (FIG. 17). Here, this through hole 31d is provided for each second core locking portion 45A.

[0046] Here, the first ferrite core 20A is desirably held between the first core locking portion 33b and the second core locking portion 45A in order to suppress misalignment in the first core accommodating chamber 33. Similarly, the second ferrite core 20B is desirably held between the first core locking portion 34b and the second core locking portion 45B in order to suppress misalignment in the second core accommodating chamber 34.

[0047] In the connector 1 of this embodiment, for example, the ferrite core 20 (first ferrite core 20A, second ferrite core 20B) is assembled to the first housing 30, and then the terminal fitting 10 is assembled to the first housing 30 (FIGS. 6 to 14). Then, in the connector 1, the first housing 30 to which the terminal fitting 10 and the ferrite core 20 are assembled is assembled to the second housing 40 (FIGS. 1 to 5).

[0048] As described above, in the connector 1 of this embodiment, the first housing 30 is provided with the accommodation chambers (first core accommodation chamber 33, second core accommodation chamber 34) that accommodate and hold the ferrite core 20 (first ferrite core 20A, second ferrite core 20B). In this connector 1, the first housing 30 and the second housing 40 are assembled together, and the first core locking portion (first core locking portion 33b, first core locking portion 34b) of the first housing 30 and the second core locking portion (second core locking portion 45A, second core locking portion 45B) of the second housing 40 prevent the ferrite core 20 from coming out of the accommodation chamber. Therefore, the connector 1 of this embodiment does not need to provide an inner housing for holding the ferrite core between the two housings as in the conventional connector, and therefore the noise reduction effect can be improved while reducing the number of parts and suppressing the increase in size.

[0049] [Variation 1] Reference numeral 2 in Figs. 19 to 30 denotes a connector of this modified example.

[0050] The connector 2 of this modified example is configured by replacing the terminal fittings 10, first housing 30, and second housing 40 of the connector 1 of the previously described embodiment with the terminal fittings 110, first housing 130, and second housing 140 described below, respectively, and by changing the number of ferrite cores 20 accommodated.

[0051] In the connector 2 of this modification, the terminal fitting 110 and the ferrite core 20 are assembled and held in the first housing 130. In the connector 2 of this modification, an assembly consisting of the first housing 130 and the like is inserted into the second housing 140 through the housing insertion opening 140a and assembled, so that the terminal fitting 110 and the ferrite core 20 are accommodated inside the assembled first housing 130 and second housing 140 (FIGS. 21 and 23 to 28). A locking mechanism (not shown) is provided between the first housing 130 and the second housing 140, which uses a claw or the like to hold them in the assembled position.

[0052] Similar to the terminal fitting 10 of the embodiment, the terminal fitting 110 of this modification has a base portion 111, and a plurality of cantilevered terminal portions protrude from this base portion 111 (FIGS. 21 to 28). However, the terminal fitting 110 of this modification has, as its terminal portions, at least one first terminal portion 112 protruding from the base portion 111 in a first direction, and a plurality of second terminal portions 113 protruding from the base portion 111 in a second direction opposite to the first direction and arranged at intervals in the terminal arrangement direction perpendicular to the first direction.

[0053] The base portion 111 is a connecting portion that connects all of the first terminal portions 112 and second terminal portions 113 of the terminal fitting 110. The base portion 111 shown here is formed in a rectangular flat plate shape.

[0054] The first terminal portion 112 is a terminal portion that electrically connects the terminal fitting 110 to the first device side. The first terminal portion 112 is physically and electrically connected to a mating terminal fitting (not shown) on the first device side attached to an end of the electric wire We1 by being fitted and connected thereto, and is electrically connected to the first device side via the mating terminal fitting and the electric wire We1. On the other hand, the second terminal portion 113 is a terminal portion that electrically connects the terminal fitting 110 to the second device side. The second terminal portion 113 is physically and electrically connected to a mating terminal fitting (not shown) on the second device side attached to an end of the electric wire We2 by being fitted and connected thereto, and is electrically connected to the second device side via the mating terminal fitting and the electric wire We2.

[0055] In the terminal fitting 110 shown here, the first terminal portion 112 protrudes in the first direction from one side of the base portion 111 on the same plane as the base portion 111, and the second terminal portion 113 protrudes in the second direction from one side of the base portion 111 on the same plane as the base portion 111 (FIGS. 21 to 28). The first terminal portion 112 and the second terminal portion 113 shown here are formed as axial male terminal portions whose axial direction is the protruding direction (first direction, second direction) from the base portion 111, like the terminal portion 12 of the embodiment. Here, the first terminal portion 112 and the second terminal portion 113 are formed as male terminal portions of the same shape.

[0056] The terminal fitting 110 shown here has three first terminal portions 112 and three second terminal portions 113 (FIG. 23). In the terminal fitting 110, the three first terminal portions 112 are arranged at intervals between each other in the terminal arrangement direction, and the three second terminal portions 113 are arranged at intervals between each other in the terminal arrangement direction. The first terminal portions 112 are arranged at equal intervals (equal pitch) between adjacent ones. The second terminal portions 113 are arranged at the same intervals (pitch) as the first terminal portions 112 between adjacent ones. In this terminal fitting 110, one (one) first terminal portion 112 and one (one) second terminal portion 113 are paired, and the paired first terminal portion 112 and second terminal portion 113 are arranged side by side in a first direction (second direction). In other words, the paired first terminal portion 112 and second terminal portion 113 are arranged side by side on the same axis.

[0057] In the connector 2 of this modification, similarly to the connector 1 of the embodiment, the terminal fittings 110 are arranged at intervals in the fitting arrangement direction perpendicular to the first direction and the terminal arrangement direction (FIGS. 21 to 28). In this modification, the fitting arrangement direction is also the insertion direction of a holding body 131 of the first housing 130, which will be described later, into a housing accommodating chamber 142 of the second housing 140, which will be described later. In the multiple terminal fittings 110, the first terminal portions 112 arranged at the same position on the respective base portions 111 are arranged in the fitting arrangement direction, and the second terminal portions 113 arranged at the same position on the respective base portions 111 are arranged in the fitting arrangement direction. Thus, in the multiple terminal fittings 110, three combinations of the multiple first terminal portions 112 arranged in the fitting arrangement direction are provided, and three combinations of the multiple second terminal portions 113 arranged in the fitting arrangement direction are provided.

[0058] In the connector 2 of this modification, a pair of electric wires We1 and a mating terminal fitting on the first device side may be connected to the first terminal portion 112 one by one, and a mating connector on the first device side in which a combination of the pair of electric wires We1 and a mating terminal fitting is provided for each of the first terminal portions 112 may be fitted and connected. In the connector 2 of this modification, a pair of electric wires We2 and a mating terminal fitting on the second device side may be connected to the second terminal portion 113 one by one, and a mating connector on the second device side in which a combination of the pair of electric wires We2 and a mating terminal fitting is provided for each of the second terminal portions 113 may be fitted and connected. Here, the mating terminal fittings are fitted and connected to the first terminal portion 112 and the second terminal portion 113 via their respective mating connectors.

[0059] In the connector 2 of this modification, one of two first terminals 112 adjacent in the metal fitting arrangement direction is electrically connected to one electric wire We1 of the twisted pair electric wire on the first device side, and the other of them is electrically connected to the other electric wire We1 of the twisted pair electric wire on the first device side. Then, one of two second terminals 113 adjacent in the metal fitting arrangement direction is electrically connected to one electric wire We2 of the twisted pair electric wire on the second device side, and the other of them is electrically connected to the other electric wire We2 of the twisted pair electric wire on the second device side.

[0060] The connector 2 shown here includes two terminal fittings 110. In the connector 2 shown here, the twisted pair electric wires on the first device side are electrically connected via the mating terminal fittings for each combination of two first terminal portions 112 aligned in the fitting arrangement direction, and the twisted pair electric wires on the second device side are electrically connected via the mating terminal fittings for each combination of two second terminal portions 113 aligned in the fitting arrangement direction.

[0061] A ferrite core 20 is provided for each of the first terminal portions 112 and the second terminal portions 113 (FIG. 23). The ferrite core 20 is formed so that the first terminal portion 112 or the second terminal portion 113 can be inserted therethrough in the protruding direction.

[0062] The ferrite core 20 of this modification is provided for each combination of a plurality of first terminals 112 arranged in the metal fitting arrangement direction and for each combination of a plurality of second terminals 113 arranged in the metal fitting arrangement direction (FIGS. 21 to 24 and 26). The ferrite core 20 shown here is provided for each combination of two first terminals 112 arranged in the metal fitting arrangement direction, and is provided for each combination of two second terminals 113 arranged in the metal fitting arrangement direction. In other words, the connector 2 shown here includes three ferrite cores 20 for the first terminals 112 and three ferrite cores 20 for the second terminals 113. In the connector 2 of this modification, the first terminals 112 and the second terminals 113 are formed in the same shape as the terminals 12 of the embodiment, so the ferrite cores 20 of the embodiment are used as they are.

[0063] The first housing 130 of this modified example, like the first housing 30 of the embodiment, is provided with a holder 131 that holds the terminal fittings 110 and the ferrite core 20, and a cover 132 that covers the housing insertion opening 140a of the second housing 140 (Figures 21 and 23 to 28).

[0064] In the holder 131 of this modification, the terminal fitting 110 is inserted in the first direction from the free end side of the first terminal portion 112 (FIGS. 23 to 26). The holder 31 has, as core accommodating chambers, a first core accommodating chamber 133 which is a chamber for accommodating and holding the ferrite core 20 (first ferrite core 20A) for the first terminal portion 112 through which the first terminal portion 112 is inserted, and into which the first ferrite core 20A is inserted in the second direction from a core insertion opening 133a, and a second core accommodating chamber 134 which is a chamber for accommodating and holding the ferrite core 20 (second ferrite core 20B) for the second terminal portion 113 through which the second terminal portion 113 is inserted, and into which the second ferrite core 20B is inserted in the first direction from a core insertion opening 134a (FIGS. 21, 22, 24, 26, and 28). In the holder 131 shown here, three first core accommodating chambers 133 and three second core accommodating chambers 134 are aligned in the terminal arrangement direction.

[0065] The first core accommodating chamber 133 is provided with a first core locking portion 133b that locks the end of the first ferrite core 20A in the second direction side inside the chamber (FIGS. 21, 22, 24, 26, and 28). The first core accommodating chamber 133 accommodates the portion of the first terminal portion 112 that is inserted into the through hole 21 of the first ferrite core 20A. The second core accommodating chamber 134 is provided with a first core locking portion 134b that locks the end of the second ferrite core 20B in the first direction side inside the chamber (FIGS. 21, 22, 24, 26, and 28). The second core accommodating chamber 134 accommodates the portion of the second terminal portion 113 that is inserted into the through hole 21 of the second ferrite core 20B.

[0066] In this connector 2, all first terminal portions 112 of the terminal fittings 110 are protruded in a first direction from the holder 131, and the protruding portions of the first terminal portions 112 become terminal connecting portions that are fitted and connected to the mating terminal fittings on the first device side. Furthermore, in this connector 2, all second terminal portions 113 of the terminal fittings 110 are protruded in a second direction from the holder 131, and the protruding portions of the second terminal portions 113 become terminal connecting portions that are fitted and connected to the mating terminal fittings on the second device side. The holder 131 shown here is formed so that the terminal fittings 110 are inserted in the first direction from the core insertion opening 134a side of the second core accommodating chamber 134, and the first terminal portions 112 of the terminal fittings 110 protrude beyond the core insertion opening 133a of the first core accommodating chamber 133. Therefore, the holder 131 has a through hole (hereinafter referred to as a "terminal insertion hole") 131a for inserting the first terminal portion 112 of the terminal fitting 110 inserted in the first direction from the core insertion opening 134a of the second core accommodating chamber 134 from the second core accommodating chamber 134 to the first core accommodating chamber 133 (FIGS. 22, 29 and 30). The terminal insertion hole 131a is formed for each of the first terminal portions 112.

[0067] The first core accommodating chamber 133 and the second core accommodating chamber 134 are provided with holding portions 135 for holding the ferrite cores 20 (the first ferrite core 20A and the second ferrite core 20B) in the same manner as the first core accommodating chamber 33 and the second core accommodating chamber 34 of the embodiment (FIGS. 29 and 30). In this modified example, the holding portions 135 are provided with a pair of first holding portions 135A protruding toward the room side from a wall body (hereinafter referred to as the "first wall body") 136A in the terminal arrangement direction that constitutes the first core accommodating chamber 133 or the second core accommodating chamber 134, and a pair of second holding portions 135B protruding toward the room side from a wall body (hereinafter referred to as the "second wall body") 136B in the metal fitting arrangement direction that constitutes the first core accommodating chamber 133 or the second core accommodating chamber 134, in the same manner as the holding portion 35 of the embodiment.

[0068] In the first housing 130, the base 111 of the terminal fitting 110 is also accommodated across the second core accommodating chambers 134. For this reason, a first wall 136A in the terminal arrangement direction that constitutes the second core accommodating chamber 134 is formed with an insertion groove 136a into which the base 111 is inserted from the core insertion opening 134a as in the embodiment (FIGS. 22 and 30). The insertion groove 136a is a groove that extends in the first direction from the end face of the first wall 136A on the second direction side, and is formed with a groove width that allows the base 111 to be sandwiched from each plane. However, the insertion groove 136a in this modification extends to the partition wall between the first core accommodating chamber 133 and the second core accommodating chamber 134 (FIG. 22).

[0069] The holder 131 shown here is formed in a rectangular shape. In this holder 131, a core insertion opening 133a for the first core accommodating chamber 133 is formed in one of six wall surfaces, and a core insertion opening 134a for the second core accommodating chamber 134 is formed in the wall surface opposite to the first wall surface in the second direction.

[0070] Like the holder 31 of the embodiment, the holder 131 is inserted into the second housing 140 together with the assembled terminal fittings 110 and ferrite core 20 (first ferrite core 20A, second ferrite core 20B) in a direction perpendicular to the axial direction of the through hole 21 of the ferrite core 20. In this modification, the assembled body including the holder 131 is inserted in a direction perpendicular to the first direction and the terminal arrangement direction (the fitting arrangement direction). Therefore, in the first housing 130, a lid 132 is provided on the wall surface of the holder 131 on the opposite side to the insertion direction into the second housing 140. The lid 132 shown here is formed in a rectangular flat plate shape that matches the shape of the rectangular housing insertion opening 140a of the second housing 140.

[0071] The second housing 140 of this modification accommodates the retainer 131 together with the terminal fitting 110 and the ferrite core 20 (first ferrite core 20A, second ferrite core 20B) at the position where assembly with the first housing 130 is completed, similarly to the second housing 40 of the embodiment. This second housing 140 has a cylindrical (here, rectangular cylindrical) main body 141 whose cylindrical axis direction coincides with the axial directions (first direction, second direction) of the first terminal portion 112 and the second terminal portion 113 and the hole axis direction of the through hole 21 of the ferrite core 20, and accommodates the terminal fitting 110, the ferrite core 20, and the retainer 131 of the first housing 130 inside the main body 141 (FIGS. 21 to 28).

[0072] Similar to the second housing 40 of the embodiment, the second housing 140 of this modified example has an accommodation chamber (housing accommodation chamber) 142 that accommodates the retaining body 131 when the second housing 140 is in the position where assembly with the first housing 130 is completed (FIGS. 21 to 28).

[0073] On the other hand, second housing 140 of this modification has, as terminal accommodating chambers, first terminal accommodating chamber 143A in which the free end side of first terminal portion 112 protruding from holding body 131 is accommodated when assembly with first housing 130 is completed, and second terminal accommodating chamber 143B in which the free end side of second terminal portion 113 protruding from holding body 131 is accommodated when assembly with first housing 130 is completed (FIGS. 21 to 28). Therefore, second housing 140 of this modification has partition walls 144 between housing accommodating chamber 142 and first terminal accommodating chamber 143A and between housing accommodating chamber 142 and second terminal accommodating chamber 143B, which are the same as partition wall 44 of the embodiment (FIGS. 21 to 28).

[0074] In the second housing 140 of this modification, similarly to the second housing 40 of the embodiment, a rectangular housing insertion opening 140a is formed in one wall 141a of the main body 141, and the holder 131 to which the terminal fitting 110 and the ferrite core 20 are assembled is inserted from the housing insertion opening 140a toward another wall 141b of the main body 141 that is disposed opposite to the wall 141a with a gap therebetween (FIGS. 21 to 28). The cover 132 of the first housing 130 is fitted into the housing insertion opening 140a.

[0075] The housing accommodating chamber 142 is a chamber connected to the housing insertion opening 140a, and the holder 131 is inserted from the housing insertion opening 140a together with the terminal fitting 110 and the ferrite core 20 (first ferrite core 20A, second ferrite core 20B). The housing accommodating chamber 142 shown here is formed as a rectangular space that matches the shape of the rectangular holder 131.

[0076] The first terminal accommodating chamber 143A is a chamber connected to the housing insertion opening 140a, and the free end side of the first terminal portion 112 protruding from the holder 131 is inserted through the housing insertion opening 140a. For this reason, a groove portion (hereinafter referred to as an escape groove) 144a for avoiding the first terminal portion 112 during the process of assembling the first housing 130 and the second housing 140 is formed in the partition wall 144 between the housing accommodating chamber 142 and the first terminal accommodating chamber 143A (FIGS. 21 to 28). This escape groove 144a is provided for each combination of the multiple first terminal portions 112 arranged in the metal fitting arrangement direction.

[0077] The first terminal accommodating chamber 143A is a chamber into which the first terminal portion 112 in the chamber is inserted and fitted to the mating terminal fitting of the first device by inserting the mating terminal fitting of the first device side in the second direction from a terminal insertion port 143a (FIGS. 21, 22, 24, 26, and 28) on one opening side of the main body 141. In the connector 2 shown here, the mating connector of the first device side is inserted and fitted from the terminal insertion port 143a. Thus, here, one opening of the main body 141 is used as the terminal insertion port 143a when inserting the mating connector into the first terminal accommodating chamber 143A.

[0078] Second terminal accommodating chamber 143B is a chamber connected to housing insertion opening 140a, and the free end side of second terminal portion 113 protruding from holder 131 is inserted through housing insertion opening 140a. For this reason, in partition wall 144 between housing accommodating chamber 142 and second terminal accommodating chamber 143B, similar to partition wall 144 between housing accommodating chamber 142 and first terminal accommodating chamber 143A, escape grooves 144a are formed for each combination of multiple second terminal portions 113 aligned in the metal fitting arrangement direction (FIGS. 21 to 28).

[0079] The second terminal accommodating chamber 143B is a chamber into which the second terminal portion 113 inside the chamber is inserted and fitted to the mating terminal fitting of the second device by inserting the mating terminal fitting of the second device side in a first direction from a terminal insertion port 143b (FIGS. 21, 22, 24, 26, and 28) on the other opening side of the main body 141. In the connector 2 shown here, the mating connector of the second device side is inserted and fitted from the terminal insertion port 143b. Thus, here, the other opening of the main body 141 is used as the terminal insertion port 143b when inserting the mating connector into the second terminal accommodating chamber 143B.

[0080] Furthermore, the second housing 140 of this modification has a second core locking portion disposed opposite the end of the ferrite core 20 on the core insertion openings 133a, 134a side at the position where assembly with the first housing 130 is completed, similar to the second housing 40 of the embodiment, and locks the movement of the ferrite core 20 toward the core insertion openings 133a, 134a side. The second housing 140 shown here has, as its second core locking portion, a second core locking portion 145A for the first ferrite core 20A and a second core locking portion 145B for the second ferrite core 20B, similar to the second housing 40 of the embodiment (FIGS. 21 to 28).

[0081] The second core locking portion 145A for the first ferrite core 20A has the same function as the second core locking portion 45A of the embodiment. The first ferrite core 20A shown here has an end portion on the core insertion opening 133a side (first direction side) disposed at the same position as the core insertion opening 133a. Therefore, the second core locking portion 145A shown here is formed as a wall body that covers and closes the core insertion opening 133a of the first core accommodating chamber 133 from the outside of the first core accommodating chamber 133. Here, the partition wall 144 between the housing accommodating chamber 142 and the first terminal accommodating chamber 143A is used as the second core locking portion 145A.

[0082] The second core locking portion 145B for the second ferrite core 20B has the same function as the second core locking portion 45B of the embodiment. The second ferrite core 20B shown here has an end portion on the core insertion opening 134a side (second direction side) disposed at the same position as the core insertion opening 134a. Therefore, the second core locking portion 145B shown here is formed as a wall body that covers and closes the core insertion opening 134a of the second core accommodating chamber 134 from the outside of the second core accommodating chamber 134. Here, the partition wall 144 between the housing accommodating chamber 142 and the second terminal accommodating chamber 143B is used as the second core locking portion 145B.

[0083] Here, the first ferrite core 20A is desirably held between the first core locking portion 133b and the second core locking portion 145A in order to suppress misalignment in the first core accommodating chamber 133. Similarly, the second ferrite core 20B is desirably held between the first core locking portion 134b and the second core locking portion 145B in order to suppress misalignment in the second core accommodating chamber 134.

[0084] In such a connector 2 of this modification, for example, after the terminal fittings 110 are assembled to the first housing 130, the ferrite core 20 (first ferrite core 20A, second ferrite core 20B) is assembled to the first housing 130 (FIGS. 23 to 28). Then, in this connector 2, the first housing 130 to which the terminal fittings 110 and the ferrite core 20 are assembled is assembled to the second housing 140 (FIGS. 19 to 22).

[0085] As described above, in the connector 2 of this modified example, similarly to the connector 1 of the embodiment, the first housing 130 is provided with accommodation chambers (first core accommodation chamber 133, second core accommodation chamber 134) that accommodate and hold the ferrite core 20 (first ferrite core 20A, second ferrite core 20B). In the connector 2, similarly to the connector 1 of the embodiment, the first housing 130 and the second housing 140 are assembled together, whereby the first core locking portion (first core locking portion 133b, first core locking portion 134b) of the first housing 130 and the second core locking portion (second core locking portion 145A, second core locking portion 145B) of the second housing 140 prevent the ferrite core 20 from coming out of the accommodation chambers. Therefore, in the connector 2 of this modified example, like the connector 1 of the embodiment, there is no need to provide an inner housing for holding the ferrite core between the two housings as in the conventional case, so that the noise reduction effect can be improved while reducing the number of parts and preventing the connector from becoming too large.

[0086] [Variation 2] Reference numeral 3 in Figs. 31 to 42 denotes a connector of this modified example.

[0087] The connector 3 of this modified example is configured by replacing the terminal fittings 10, first housing 30, and second housing 40 of the connector 1 of the previously described embodiment with the terminal fittings 210, first housing 230, and second housing 240 described below, respectively, and by changing the number of ferrite cores 20 accommodated.

[0088] In the connector 3 of this modification, the terminal fitting 210 and the ferrite core 20 are assembled and held in the first housing 230. In the connector 3 of this modification, an assembly including the first housing 230 and the like is inserted into the second housing 240 through the housing insertion opening 240a and assembled, so that the terminal fitting 210 and the ferrite core 20 are accommodated inside the assembled first housing 230 and second housing 240 (FIGS. 33, 35, 36, 38, and 40). A locking mechanism (not shown) is provided between the first housing 230 and the second housing 240, which uses a claw or the like to hold them in the assembled position.

[0089] Similar to the terminal fitting 10 of the embodiment, the terminal fitting 210 of this modification has a base 211 from which a plurality of cantilevered terminal portions protrude (FIGS. 33 to 37, 39, and 41). However, the terminal fitting 210 of this modification has, as its terminal portions, at least one first terminal portion 212 protruding in one direction from the base portion 211, and a plurality of second terminal portions 213 protruding in the other direction from the base portion 211 and arranged at intervals in the terminal arrangement direction perpendicular to the protruding direction.

[0090] The base portion 211 is a connecting portion that connects all of the first terminal portions 212 and second terminal portions 213 of the terminal fitting 210. The base portion 211 shown here is formed in a rectangular flat plate shape.

[0091] In this terminal fitting 210, the first terminal portion 212 protrudes in one direction from one side of the base 211 on the same plane as the base 211, and the second terminal portion 213 protrudes in the other direction from a side of the base 211 opposite the first side on the same plane as the base 211 (Figures 33 to 37, 39 and 41).

[0092] The first terminal portion 212 and the second terminal portion 213 shown here are formed as axial male terminal portions whose axial direction is the direction of protrusion from the base portion 211, similar to the terminal portion 12 of the embodiment. Here, the first terminal portion 212 and the second terminal portion 213 are formed as male terminal portions of the same shape.

[0093] Here, in the connector 3 of this modified example, the terminal fittings 210 are accommodated in the first housing 230 in two assembly configurations in which the protruding directions of the first terminal portion 212 (second terminal portion 213) are opposite to each other. Thus, in the connector 3 shown here, all the same terminal fittings 210 are used, but for convenience, the terminal fittings 210 in one assembly configuration are referred to as "first terminal fittings 210A" and the terminal fittings 210 in the other assembly configuration are referred to as "second terminal fittings 210B." In other words, the connector 3 shown here is equipped with all the same terminal fittings 210, but for convenience, the terminal fittings 210 are equipped with the first terminal fittings 210A and the second terminal fittings 210B. However, as long as the connector 3 of this modified example has at least one first terminal portion 212 and a plurality of second terminal portions 213, it may be provided with first terminal fittings and second terminal fittings in which the quantities of the first terminal portions 212 and second terminal portions 213 are different from each other.

[0094] In connector 3 of this modification, first terminal fitting 210A is accommodated in first housing 230 with the protruding direction of first terminal portion 212 facing in a first direction and the protruding direction of second terminal portion 213 facing in a second direction opposite to the first direction. In connector 3, second terminal fitting 210B is accommodated in first housing 230 with the protruding direction of first terminal portion 212 facing in the second direction and the protruding direction of second terminal portion 213 facing in the first direction. In connector 3 of this modification, first terminal fitting 210A and second terminal fitting 210B are arranged on the same plane.

[0095] In the connector 3 of this modification, the first terminal portion 212 of the first terminal fitting 210A and the second terminal portion 213 of the second terminal fitting 210B are electrically connected to the first device side, and the second terminal portion 213 of the first terminal fitting 210A and the first terminal portion 212 of the second terminal fitting 210B are electrically connected to the second device side. The first terminal portion 212 of the first terminal fitting 210A and the second terminal portion 213 of the second terminal fitting 210B are physically and electrically connected to a mating terminal fitting (not shown) on the first device side attached to an end of the electric wire We1, respectively, and are electrically connected to the first device side via the mating terminal fitting and the electric wire We1. On the other hand, the second terminal portion 213 of the first terminal fitting 210A and the first terminal portion 212 of the second terminal fitting 210B are physically and electrically connected by being fitted and connected to a mating terminal fitting (not shown) on the second device side attached to the end of the electric wire We2, and are electrically connected to the second device side via the mating terminal fitting and the electric wire We2.

[0096] The terminal fitting 210 shown here has one (one) first terminal portion 212 and three (three) second terminal portions 213 (FIGS. 34, 35, 37, 39, and 41). In this terminal fitting 210, the three (three) second terminal portions 213 are arranged at intervals one by one in the terminal arrangement direction. The adjacent second terminal portions 113 are arranged at equal intervals (equal pitch). In this terminal fitting 110, one (one) first terminal portion 212 and one at the end of the three (three) second terminal portions 213 are paired, and the paired first terminal portion 212 and second terminal portion 213 are arranged in the first direction (second direction). In other words, the paired first terminal portion 212 and second terminal portion 213 are arranged coaxially.

[0097] In the connector 3 shown here, one first terminal portion 212 of the first terminal fitting 210A and three second terminal portions 213 of the second terminal fitting 210B are arranged at intervals of one each in the terminal arrangement direction. Therefore, in the connector 3 shown here, the three second terminal portions 213 of the first terminal fitting 210A and one first terminal portion 212 of the second terminal fitting 210B are arranged at intervals of one each in the terminal arrangement direction.

[0098] In the connector 3 of this modification, the first terminal fittings 210A and the second terminal fittings 210B are arranged at intervals in the fitting arrangement direction perpendicular to the first direction and the terminal arrangement direction (FIGS. 33, 35, and 36). In this modification, the fitting arrangement direction is also the insertion direction of a holding body 231 (described later) of the first housing 230 into a housing accommodating chamber 242 (described later) of the second housing 240. In the multiple first terminal fittings 210A, the first terminal portions 212 arranged at the same position on the respective base portions 211 are arranged in the fitting arrangement direction, and the second terminal portions 213 arranged at the same position on the respective base portions 211 are arranged in the fitting arrangement direction. Here, the multiple second terminal fittings 210B are also arranged in the fitting arrangement direction in the same manner as the first terminal fittings 210A. Therefore, in each of the multiple first terminal fittings 210A and the multiple second terminal fittings 210B, one combination of multiple first terminal portions 212 arranged in the metal fitting arrangement direction is provided, and three combinations of multiple second terminal portions 213 arranged in the metal fitting arrangement direction are provided.

[0099] In the connector 3 of this modification, a pair of electric wires We1 and a mating terminal fitting on the first device side may be connected to the first terminal portion 212 of the first terminal fitting 210A and the second terminal portion 213 of the second terminal fitting 210B, respectively, and the combination of the pair of electric wires We1 and the mating terminal fitting may be fitted and connected to a mating connector on the first device side provided for the first terminal portion 212 of the first terminal fitting 210A and the second terminal portion 213 of the second terminal fitting 210B. Also, in the connector 3 of this modification, a pair of electric wires We2 and a mating terminal fitting on the second device side may be connected to the second terminal portion 213 of the first terminal fitting 210A and the first terminal portion 212 of the second terminal fitting 210B, respectively, and the combination of the pair of electric wires We2 and the mating terminal fitting may be fitted and connected to a mating connector on the second device side provided for the second terminal portion 213 of the first terminal fitting 210A and the first terminal portion 212 of the second terminal fitting 210B. Here, mating terminal fittings are fitted and connected to the first terminal portion 212 and the second terminal portion 213 via their respective mating connectors.

[0100] In the multiple first terminal fittings 210A, one of two first terminal portions 212 adjacent in the fitting arrangement direction is electrically connected to one of the wires We1 in the twisted pair electric wire on the first device side, and the other of the first terminal portions 212 is electrically connected to the other of the first terminal portions 212. Furthermore, in the multiple first terminal fittings 210A, one of two second terminal portions 213 adjacent in the fitting arrangement direction is electrically connected to one of the wires We2 in the twisted pair electric wire on the second device side, and the other of the second terminal portions 213 is electrically connected to the other of the second terminal portions 212. In the multiple second terminal fittings 210B, one of two first terminal portions 212 adjacent in the fitting arrangement direction is electrically connected to one of the wires We2 of the twisted pair electric wire on the second device side, and the other of the first terminal portions 212 is electrically connected to the other of the first terminal portions 212. Furthermore, in the multiple second terminal fittings 210B, one of two second terminal portions 213 adjacent in the fitting arrangement direction is electrically connected to one of the wires We1 of the twisted pair electric wire on the first device side, and the other of the second terminal portions 213 is electrically connected to the other of the second terminal portions 212.

[0101] The connector 3 shown here includes two first terminal fittings 210A and two second terminal fittings 210B.

[0102] The ferrite core 20 is provided for each of the first terminal portions 212 and the second terminal portions 213 (FIGS. 33 to 39 and 41). The ferrite core 20 is formed so that the first terminal portion 212 or the second terminal portion 213 can be inserted therethrough in the protruding direction.

[0103] The ferrite core 20 of this modification is provided for each combination of a plurality of first terminal parts 212 arranged in the metal fitting arrangement direction and for each combination of a plurality of second terminal parts 213 arranged in the metal fitting arrangement direction (FIGS. 35 and 36). The ferrite core 20 shown here is provided for each combination of two first terminal parts 212 arranged in the metal fitting arrangement direction, and is provided for each combination of two second terminal parts 213 arranged in the metal fitting arrangement direction. That is, the connector 3 shown here includes two ferrite cores 20 for the first terminal parts 212 and six ferrite cores 20 for the second terminal parts 213. In the ferrite core 20 for the first terminal parts 212, the through holes 21 are formed in the metal fitting arrangement direction for each combination of a plurality of first terminal parts 212 arranged in the metal fitting arrangement direction. In addition, in the ferrite core 20 for the second terminal parts 213, the through holes 21 are formed in the metal fitting arrangement direction for each combination of a plurality of second terminal parts 213 arranged in the metal fitting arrangement direction. In the connector 3 of this modification, the first terminal portion 212 and the second terminal portion 213 are formed in the same shape as the terminal portion 12 of the embodiment, and therefore the ferrite core 20 of the embodiment is used as is.

[0104] The first housing 130 of this modified example, like the first housing 30 of the embodiment, is provided with a holder 231 that holds the terminal fittings 210 and the ferrite core 20, and a cover 232 that covers the housing insertion opening 240a of the second housing 240 (Figures 33, 35, 36, 38, 40 and 42).

[0105] In this modified example of the retaining body 231, the first terminal fitting 210A is inserted in a first direction from the free end side of the first terminal portion 212, and the second terminal fitting 210B is inserted in a second direction from the free end side of the first terminal portion 212 (Figures 34, 35, 37, 39 and 41). This retaining body 231 serves as a core accommodating chamber to accommodate the first terminal portion 212 of the first terminal fitting 210A, whose protruding direction faces the first direction, and the second terminal portion 213 of the second terminal fitting 210B, whose protruding direction faces the first direction, and is a chamber to accommodate and hold the ferrite core 20 (first ferrite core 20A) through which the first terminal portion 212 of the first terminal fitting 210A and the second terminal portion 213 of the second terminal fitting 210B are inserted, and has a first core accommodating chamber 233 into which the first ferrite core 20A for the first terminal portion 212 of the first terminal fitting 210A and the first ferrite core 20A for the second terminal portion 213 of the second terminal fitting 210B are inserted in the second direction from the core insertion opening 233a (Figures 33, 34 and 36). Furthermore, this retaining body 231 has a core accommodating chamber which accommodates the second terminal portion 213 of the first terminal fitting 210A, whose protruding direction faces the second direction, and the first terminal portion 212 of the second terminal fitting 210B, whose protruding direction faces the second direction, and which accommodates and holds the ferrite core 20 (second ferrite core 20B) through which the second terminal portion 213 of the first terminal fitting 210A and the first terminal portion 212 of the second terminal fitting 210B are inserted, and has a first core accommodating chamber 234 into which the second ferrite core 20B for the second terminal portion 213 of the first terminal fitting 210A and the second ferrite core 20B for the first terminal portion 212 of the second terminal fitting 210B are inserted in the first direction from the core insertion opening 234a (Figures 33, 34 and 36). In the holder 231 shown here, four first core accommodating chambers 233 and four second core accommodating chambers 234 are aligned in the terminal arrangement direction.

[0106] The first core accommodating chamber 233 is provided with a first core locking portion 233b that locks the end of the first ferrite core 20A in the second direction side inside the chamber (FIGS. 33, 34, 36, and 37). The first terminal portion 212 of the first terminal fitting 210A and the second terminal portion 213 of the second terminal fitting 210B that are inserted into the through hole 21 of the first ferrite core 20A are accommodated in the first core accommodating chamber 233. The second core accommodating chamber 234 is provided with a first core locking portion 234b that locks the end of the second ferrite core 20B in the first direction side inside the chamber (FIGS. 33, 34, 36, and 37). ... terminal portion 213 of the first terminal fitting 210A and the first terminal portion 212 of the second terminal fitting 210B that are inserted into the through hole 21 of the second ferrite core 20B.

[0107] In this connector 3, the first terminal portion 212 of the first terminal fitting 210A and all the second terminal portions 213 of the second terminal fittings 210B are caused to protrude in a first direction from the holder 231, and the protruding portions of the first terminal portions 212 and the second terminal portions 213 each become a terminal connecting portion that is fitted and connected to a mating terminal fitting on the first device side. Furthermore, in this connector 3, all the second terminal portions 213 of the first terminal fitting 210A and the first terminal portions 212 of the second terminal fittings 210B are caused to protrude in a second direction from the holder 231, and the protruding portions of the first terminal portions 212 and the second terminal portions 213 each become a terminal connecting portion that is fitted and connected to a mating terminal fitting on the second device side. The retaining body 231 shown here is formed to insert the first terminal fitting 210A in a first direction from the core insertion opening 234a side of the second core accommodating chamber 234 and cause the first terminal portion 212 of this first terminal fitting 210A to protrude beyond the core insertion opening 233a of the first core accommodating chamber 233. Furthermore, the retaining body 231 shown here is formed to insert the second terminal fitting 210B in a second direction from the core insertion opening 233a side of the first core accommodating chamber 233 and cause the first terminal portion 212 of this second terminal fitting 210B to protrude beyond the core insertion opening 234a of the second core accommodating chamber 234. Therefore, the holder 231 has a first through hole (first terminal insertion hole) 231a through which the first terminal portion 212 of the first terminal fitting 210A inserted in a first direction from the core insertion opening 234a of the second core accommodating chamber 234 is inserted from the second core accommodating chamber 234 to the first core accommodating chamber 233 (FIGS. 34, 37, 39, and 41). Furthermore, the holder 231 has a second through hole (second terminal insertion hole) 231b through which the first terminal portion 212 of the second terminal fitting 210B inserted in a second direction from the core insertion opening 233a of the first core accommodating chamber 233 is inserted from the first core accommodating chamber 233 to the second core accommodating chamber 234 (FIGS. 34, 37, 39, 41, and 42).

[0108] The first core accommodating chamber 233 and the second core accommodating chamber 234 are provided with holding portions 235 for holding the ferrite cores 20 (the first ferrite core 20A and the second ferrite core 20B) in the same manner as the first core accommodating chamber 33 and the second core accommodating chamber 34 of the embodiment (FIG. 42). In this modification, the holding portions 235 are provided with a pair of first holding portions 235A protruding toward the interior side from a wall body (hereinafter referred to as the "first wall body") 236A in the terminal arrangement direction that constitutes the first core accommodating chamber 233 or the second core accommodating chamber 234, and a pair of second holding portions 235B protruding toward the interior side from a wall body (hereinafter referred to as the "second wall body") 236B in the metal fitting arrangement direction that constitutes the first core accommodating chamber 233 or the second core accommodating chamber 234, in the same manner as the holding portion 35 of the embodiment. Note that in FIG. 42, only the holding portion 235 on the first core accommodating chamber 233 side is shown as a representative.

[0109] In the first housing 230, the base 211 of the first terminal fitting 210A is also accommodated across the second core accommodating chambers 234. For this reason, the first wall 236A in the terminal arrangement direction forming the second core accommodating chamber 234 is formed with a first fitting groove 236a into which the base 211 is inserted from the core insertion opening 234a as in the embodiment (FIGS. 34, 36, 37, 39, and 41). The first fitting groove 236a is a groove extending in the first direction from the end face of the first wall 236A on the second direction side, and is formed with a groove width that allows the base 211 to be sandwiched from each plane. However, the first fitting groove 236a in this modification extends to the partition wall between the first core accommodating chamber 233 and the second core accommodating chamber 234.

[0110] In the first housing 230, the base 211 of the second terminal fitting 210B is also accommodated across the first core accommodating chambers 233. For this reason, a second fitting groove 236b into which the base 211 is fitted while being inserted from the core insertion opening 233a is formed in the first wall 236A in the terminal arrangement direction forming the first core accommodating chamber 233, as in the embodiment (FIGS. 34, 36, 37, 39, 41, and 42). The second fitting groove 236b is a groove extending in the second direction from the end face on the first direction side of the first wall 236A, and is formed with a groove width that allows the base 211 to be sandwiched from each plane. However, in this modified example, the second fitting groove 236b extends to the partition wall between the first core accommodating chamber 233 and the second core accommodating chamber 234 (FIGS. 34, 36, 37, 39 and 41).

[0111] The holder 231 shown here is formed in a rectangular shape. In this holder 231, a core insertion opening 233a of the first core accommodating chamber 233 is formed in one of six wall surfaces, and a core insertion opening 234a of the second core accommodating chamber 234 is formed in the wall surface opposite to the first wall surface in the second direction.

[0112] As with the holder 31 of the embodiment, the holder 231 is inserted into the second housing 240 together with the assembled terminal fittings 210 (first terminal fittings 210A, second terminal fittings 210B) and ferrite core 20 (first ferrite core 20A, second ferrite core 20B) in a direction perpendicular to the axial direction of the through hole 21 of the ferrite core 20. In this modification, the assembled body including the holder 231 is inserted in a direction perpendicular to the first direction and the terminal arrangement direction (the fitting arrangement direction). Therefore, in the first housing 230, a cover 232 is provided on the wall surface of the holder 231 on the opposite side to the insertion direction into the second housing 240. The cover 232 shown here is formed in a rectangular flat plate shape that matches the shape of the rectangular housing insertion opening 240a of the second housing 240.

[0113] The second housing 240 of this modification accommodates the retainer 231 together with the terminal fittings 210 (first terminal fittings 210A, second terminal fittings 210B) and the ferrite core 20 (first ferrite core 20A, second ferrite core 20B) at the completed assembly position with the first housing 230, similarly to the second housing 40 of the embodiment. The second housing 240 has a cylindrical (here, rectangular cylindrical) main body 241 whose cylindrical axis direction coincides with the axial directions (first direction, second direction) of the first terminal portion 212 and the second terminal portion 213 and the hole axis direction of the through hole 21 of the ferrite core 20, and accommodates the terminal fittings 210, the ferrite core 20, and the retainer 231 of the first housing 230 inside the main body 241 (FIGS. 33 to 36, 38, and 40).

[0114] The second housing 240 of this modified example has an accommodation chamber (housing accommodation chamber) 242 that accommodates the retaining body 231 when the assembly with the first housing 230 is completed, similar to the second housing 40 of the embodiment (Figures 33 to 36, 38 and 40).

[0115] On the other hand, the second housing 240 of this modified example has, as terminal accommodating chambers, a first terminal accommodating chamber 243A in which the free end side of the first terminal portion 212 of the first terminal fitting 210A protruding from the retaining body 231 and the free end side of the second terminal portion 213 of the second terminal fitting 210B are accommodated when the assembly to the first housing 230 is completed, and a second terminal accommodating chamber 243B in which the free end side of the second terminal portion 213 of the first terminal fitting 210A protruding from the retaining body 231 and the free end side of the first terminal portion 212 of the second terminal fitting 210B are accommodated when the assembly to the first housing 230 is completed (Figures 33, 34 and 36). Therefore, the second housing 240 of this modified example has partitions 244 identical to the partitions 44 of the embodiment between the housing accommodating chamber 242 and the first terminal accommodating chamber 243A, and between the housing accommodating chamber 242 and the second terminal accommodating chamber 243B (Figures 33, 34 and 36).

[0116] In the second housing 240 of this modification, as in the second housing 40 of the embodiment, a rectangular housing insertion opening 240a is formed in one wall 241a of the main body 241, and the holder 231 to which the terminal fitting 210 and the ferrite core 20 are assembled is inserted from the housing insertion opening 240a toward another wall 241b of the main body 241 that is disposed opposite to the wall 241a with a gap therebetween (FIGS. 33, 35, 36, 38, and 40). The cover 232 of the first housing 230 is fitted into the housing insertion opening 240a.

[0117] The housing accommodating chamber 242 is a chamber connected to the housing insertion opening 240a, and the holder 231 is inserted from the housing insertion opening 240a together with the terminal fittings 210 (first terminal fitting 210A, second terminal fitting 210B) and the ferrite core 20 (first ferrite core 20A, second ferrite core 20B). The housing accommodating chamber 242 shown here is formed as a rectangular space that matches the shape of the rectangular holder 231.

[0118] The first terminal accommodating chamber 243A is a chamber connected to the housing insertion opening 240a, and the free end side of the first terminal portion 212 of the first terminal fitting 210A protruding from the holding body 231 and the free end side of the second terminal portion 213 of the second terminal fitting 210B are inserted through the housing insertion opening 240a. For this reason, a groove portion (hereinafter referred to as "escape groove") 244a is formed in the partition wall 244 between the housing accommodating chamber 242 and the first terminal accommodating chamber 243A to avoid the first terminal portion 212 of the first terminal fitting 210A and the second terminal portion 213 of the second terminal fitting 210B during the process of assembling the first housing 230 and the second housing 240 (FIGS. 32 to 36, 38 and 40). This escape groove 244a is provided for each combination of the first terminal portions 212 and each combination of the second terminal portions 213 arranged in the fitting arrangement direction.

[0119] The first terminal accommodating chamber 243A is a chamber in which the first terminal portion 212 of the first terminal fitting 210A and the second terminal portion 213 of the second terminal fitting 210B are inserted into the mating terminal fitting of the first device by inserting the mating terminal fitting of the first device side in a second direction from a terminal insertion port 243a (FIGS. 33, 34, and 36) on one opening side of the main body 241. In the connector 3 shown here, the mating connector of the first device side is inserted into and fitted from the terminal insertion port 243a. Thus, here, one opening of the main body 241 is used as the terminal insertion port 243a when inserting the mating connector into the first terminal accommodating chamber 243A.

[0120] The second terminal accommodating chamber 243B is a chamber connected to the housing insertion opening 240a, and the free end side of the second terminal portion 213 of the first terminal fitting 210A protruding from the holder 231 and the free end side of the first terminal portion 212 of the second terminal fitting 210B are inserted through the housing insertion opening 240a. For this reason, in the partition wall 244 between the housing accommodating chamber 242 and the second terminal accommodating chamber 243B, similar to the partition wall 244 between the housing accommodating chamber 242 and the first terminal accommodating chamber 243A, escape grooves 244a are formed for each combination of first terminal portions 212 and each combination of second terminal portions 213 arranged in the fitting arrangement direction (FIGS. 32 to 36, 38 and 40).

[0121] The second terminal accommodating chamber 243B is a chamber into which the second terminal portion 213 of the first terminal fitting 210A or the first terminal portion 212 of the second terminal fitting 210B is inserted and fitted into the mating terminal fitting of the second device by inserting the mating terminal fitting of the second device side in a first direction from a terminal insertion port 243b (FIGS. 33, 34, and 36) on the other opening side of the main body 241. In the connector 3 shown here, the mating connector of the second device side is inserted and fitted from the terminal insertion port 243b. Thus, in this case, the other opening of the main body 241 is used as the terminal insertion port 243b when inserting the mating connector into the second terminal accommodating chamber 243B.

[0122] Furthermore, the second housing 240 of this modification has a second core locking portion disposed opposite to an end portion of the ferrite core 20 on the core insertion openings 233a, 234a side at the position where assembly with the first housing 230 is completed, and locks the movement of the ferrite core 20 toward the core insertion openings 233a, 234a side, like the second housing 40 of the embodiment. The second housing 240 shown here has, as its second core locking portion, a second core locking portion 245A for the first ferrite core 20A in the first terminal accommodating chamber 243A and a second core locking portion 245B for the second ferrite core 20B in the second terminal accommodating chamber 243B, like the second housing 40 of the embodiment (FIGS. 33 to 36, 38 and 40).

[0123] The second core locking portion 245A for the first ferrite core 20A has the same function as the second core locking portion 45A of the embodiment. The first ferrite core 20A shown here has an end portion on the core insertion opening 233a side (first direction side) disposed at the same position as the core insertion opening 233a. Therefore, the second core locking portion 245A shown here is formed as a wall body that covers and closes the core insertion opening 233a of the first core accommodating chamber 233 from the outside of the first core accommodating chamber 233. Here, the partition wall 244 between the housing accommodating chamber 242 and the first terminal accommodating chamber 243A is used as the second core locking portion 245A.

[0124] The second core locking portion 245B for the second ferrite core 20B has the same function as the second core locking portion 45B of the embodiment. The second ferrite core 20B shown here has an end portion on the core insertion opening 234a side (second direction side) disposed at the same position as the core insertion opening 234a. Therefore, the second core locking portion 245B shown here is formed as a wall body that covers and closes the core insertion opening 234a of the second core accommodating chamber 234 from the outside of the second core accommodating chamber 234. Here, the partition wall 244 between the housing accommodating chamber 242 and the second terminal accommodating chamber 243B is used as the second core locking portion 245B.

[0125] Here, the first ferrite core 20A is desirably held between the first core locking portion 233b and the second core locking portion 245A in order to suppress misalignment in the first core accommodating chamber 233. Similarly, the second ferrite core 20B is desirably held between the first core locking portion 234b and the second core locking portion 245B in order to suppress misalignment in the second core accommodating chamber 234.

[0126] In such a connector 3 of this modified example, for example, the terminal fittings 210 (first terminal fittings 210A, second terminal fittings 210B) are assembled to the first housing 230, and then the ferrite core 20 (first ferrite core 20A, second ferrite core 20B) is assembled to the first housing 230 (FIGS. 35 to 41). Then, in this connector 2, the first housing 130 to which the terminal fittings 110 and the ferrite core 20 are assembled is assembled to the second housing 140 (FIGS. 31 to 34).

[0127] As described above, in the connector 3 of this modified example, similarly to the connector 1 of the embodiment, the first housing 230 is provided with accommodation chambers (first core accommodation chamber 233, second core accommodation chamber 234) that accommodate and hold the ferrite core 20 (first ferrite core 20A, second ferrite core 20B). In the connector 3, similarly to the connector 1 of the embodiment, the first housing 230 and the second housing 240 are assembled together, whereby the first core locking portion (first core locking portion 233b, first core locking portion 234b) of the first housing 230 and the second core locking portion (second core locking portion 245A, second core locking portion 245B) of the second housing 240 prevent the ferrite core 20 from coming out of the accommodation chambers. Therefore, in the connector 3 of this modified example, like the connector 1 of the embodiment, there is no need to provide an inner housing for holding the ferrite core between the two housings as in the conventional case, so that the noise reduction effect can be improved while reducing the number of parts and preventing the connector from becoming too large. [Explanation of symbols]

[0128] 1,2,3 Connector 10,110,210 Terminal fittings 11,111,211 base 12 Terminal section 20 Ferrite core 20A 1st ferrite core 20B 2nd ferrite core 21 Through hole 30,130,230 1st Housing 31,131,231 Holding body 31a, 131a Terminal insertion hole 33,133,233 First Core Containment Room 33a, 133a, 233a Core insertion port 33b, 133b, 233b First core locking portion 34,134,234 Second Core Containment Room 34a, 134a, 234a Core insertion port 34b, 134b, 234b First core locking portion 40,140,240 Second Housing 40a, 140a, 240a Housing insertion port 42,142,242 Housing Units 43 Terminal chamber 45A, 145A, 245A Second core locking part 45B, 145B, 245B Second core locking part 112,212 1st terminal section 113,213 2nd terminal section 143A, 243A First terminal housing 143B, 243B Second terminal housing 210A 1st terminal fitting 210B 2nd terminal fitting 231a First terminal insertion hole 231b Second terminal insertion hole

Claims

1. a terminal fitting having a base and a plurality of cantilever terminal portions protruding from the base; a ferrite core provided for each of the terminal portions, the ferrite core having a through hole through which the terminal portion can be inserted in a protruding direction; a first housing provided with a holder for holding the terminal metal fitting and the ferrite core; a second housing to which the first housing is attached and which accommodates the holding body together with the terminal metal fitting and the ferrite core at a position where the first housing is attached; Equipped with the holder has a core accommodating chamber, which is a chamber for accommodating and holding the ferrite core with the terminal portion inserted therethrough, and has a core insertion opening through which the ferrite core is inserted in an axial direction of the through hole, the core accommodating chamber has a first core locking portion for locking an end portion of the ferrite core accommodated in the chamber on a side opposite to the core insertion port, the second housing has a housing accommodating chamber that accommodates the retainer when the assembly with the first housing is complete, a terminal accommodating chamber in which the free end side of the terminal portion protruding from the retainer is accommodated when the assembly with the first housing is complete, a second core locking portion that is positioned opposite the end of the ferrite core on the core insertion port side when the assembly with the first housing is complete and locks the movement of the ferrite core toward the core insertion port side, and a housing insertion port that is an opening that allows the retainer to be inserted into the housing accommodating chamber together with the terminal fitting and the ferrite core in a direction perpendicular to the hole axial direction, and is closed by the first housing when the assembly with the first housing is complete.

2. 2. The connector according to claim 1, wherein the ferrite core is sandwiched between the first core locking portion and the second core locking portion.

3. All of the terminal portions of the terminal fittings are protruded in a first direction and are arranged at intervals in a terminal arrangement direction perpendicular to the first direction, 3. The connector as described in claim 1 or 2, characterized in that the retaining body has as its core accommodating chambers a first core accommodating chamber into which the ferrite core, through which one of two adjacent terminal portions is to be inserted, is inserted from the core insertion port in a second direction opposite to the first direction, and a second core accommodating chamber into which the ferrite core, through which the other of the two adjacent terminal portions is to be inserted, is inserted from the core insertion port in the first direction, and has a terminal insertion hole through which the terminal portion of the terminal fitting inserted in the first direction from the core insertion port side of the second core accommodating chamber is inserted into the core insertion port side of the first core accommodating chamber.

4. The terminal fitting has, as the terminal portion, at least one first terminal portion protruding from the base portion in a first direction, and a plurality of second terminal portions protruding from the base portion in a second direction opposite to the first direction and arranged at intervals in a terminal arrangement direction perpendicular to the first direction, the retaining body has, as the core accommodating chamber, a chamber in which the ferrite core with the first terminal portion inserted therethrough is accommodated and held, the ferrite core for the first terminal portion being inserted from the core insertion opening in the second direction, and a second core accommodating chamber which is a chamber in which the ferrite core with the second terminal portion inserted therethrough is accommodated and held, the ferrite core for the second terminal portion being inserted from the core insertion opening in the first direction, and a terminal insertion hole through which the first terminal portion of the terminal fitting inserted in the first direction from the core insertion opening of the second core accommodating chamber is inserted from the second core accommodating chamber into the first core accommodating chamber, 3. The connector as described in claim 1 or 2, characterized in that the second housing has, as its terminal accommodating chambers, a first terminal accommodating chamber in which the free end side of the first terminal portion protruding from the retaining body is accommodated when the assembly with the first housing is completed, and a second terminal accommodating chamber in which the free end side of the second terminal portion protruding from the retaining body is accommodated when the assembly with the first housing is completed.

5. a plurality of the terminal fittings arranged at intervals in an insertion direction of the holding body into the housing accommodating chamber, A connector as described in any one of claims 1 to 4, characterized in that the ferrite core is provided for each combination of multiple terminal portions arranged in the insertion direction, and the through holes are formed in a line in the insertion direction for each of multiple terminal fittings.

6. The terminal fittings include a first terminal fitting and a second terminal fitting, each of the first terminal fitting and the second terminal fitting has, as the terminal portion, at least one first terminal portion protruding in one direction from the base portion, and a plurality of second terminal portions protruding in the other direction from the base portion and arranged at intervals in a terminal arrangement direction perpendicular to the protruding direction; The holding body is a chamber in which the first terminal portion of the first terminal fitting, the protruding direction of which is oriented in a first direction, and the second terminal portion of the second terminal fitting, the protruding direction of which is oriented in the first direction, are accommodated as the core accommodating chamber, and in which the ferrite core through which the first terminal portion of the first terminal fitting and the second terminal portion of the second terminal fitting are inserted is accommodated and held, the first core accommodating chamber into which the ferrite core for the first terminal portion of the first terminal fitting and the ferrite core for the second terminal portion of the second terminal fitting are inserted from the core insertion opening in a second direction opposite to the first direction, and the second terminal portion of the first terminal fitting, the second terminal portion of the first terminal fitting, the first terminal portion of the second terminal fitting, the protruding direction of which is oriented in the second direction, and the first terminal portion of the second terminal fitting, the protruding direction of which is oriented in the second direction, are accommodated, a second core accommodating chamber which is a chamber for accommodating and holding the ferrite core through which the second terminal portion of the first terminal fitting and the first terminal portion of the second terminal fitting are inserted, and into which the ferrite core for the second terminal portion of the first terminal fitting and the ferrite core for the first terminal portion of the second terminal fitting are inserted from the core insertion opening in the first direction, and further comprising a first terminal insertion hole through which the first terminal portion of the first terminal fitting inserted from the core insertion opening of the second core accommodating chamber is inserted from the second core accommodating chamber into the first core accommodating chamber, and a second terminal insertion hole through which the first terminal portion of the second terminal fitting inserted in the second direction from the core insertion opening of the first core accommodating chamber is inserted from the first core accommodating chamber into the second core accommodating chamber, 3. The connector as described in claim 1 or 2, characterized in that the second housing has as its terminal accommodating chambers: a first terminal accommodating chamber in which the free end side of the first terminal portion of the first terminal fitting protruding from the holding body and the free end side of the second terminal portion of the second terminal fitting protruding from the holding body are accommodated when the assembly with the first housing is completed; and a second terminal accommodating chamber in which the free end side of the second terminal portion of the first terminal fitting protruding from the holding body and the free end side of the first terminal portion of the second terminal fitting protruding from the holding body are accommodated when the assembly with the first housing is completed.

7. a plurality of the first terminal fittings arranged at intervals in an insertion direction of the holder into the housing accommodating chamber, and a plurality of the second terminal fittings arranged at intervals in the insertion direction, The connector according to claim 6, characterized in that the ferrite core is provided for each combination of the terminal portions arranged in the insertion direction, and the through holes are formed in a line in the insertion direction for each combination of the terminal portions arranged in the insertion direction.

Images