JP2015099733A - Filter built-in type connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a physical relationship between a ground member and a terminal fitting to be changed in multiple forms while inhibiting increase in the number of types of components.SOLUTION: A terminal fitting 20 and a ground member 50 are attached to a housing 10, and a capacitor 30 (a filter) housed in the housing 10 is connected with the terminal fitting 20 and the ground member 50. The ground member 50 includes: a first member 51 fixed to the housing 10 and connected with the capacitor 30; multiple first engagement parts 53 provided at the first member 51; a second member 55 which is formed separately from the first member 51 and is grounded; and multiple second engagement parts 58 which are provided at the second member 55 and engage with the multiple first engagement parts 53 thereby selectively attaching the second member 55 to the first member 51 in multiple forms set in different directions.

Description

  The present invention relates to a filter built-in connector.

  Patent Document 1 discloses a filter built-in connector in which a terminal fitting and a ground member are attached to a housing, and a filter housed in the housing is connected to the terminal fitting and the ground member. In this filter built-in type connector, a circuit such as a wire harness is connected to a terminal fitting, and a ground member is grounded to a body of an automobile, thereby removing circuit noise.

Japanese Patent No. 45524318

In the above-mentioned filter built-in connector, since both the terminal fitting and the ground member are fixed to the housing, the positional relationship between the terminal fitting and the ground member is also constant. Therefore, for example, when there are a plurality of positional relationships between the circuit to which the terminal metal fitting is connected and the grounding portion to which the grounding member is connected, a plurality of types of housings and grounding members having different shapes so as to suit each form Etc. need to be easy. However, an increase in the number of types of parts is not preferable in terms of manufacturing costs and management costs.
The present invention has been completed based on the above circumstances, and it is possible to change the positional relationship between the ground member and the terminal fitting to a plurality of forms while suppressing an increase in the number of types of parts. Objective.

The filter built-in connector of the present invention is
A housing;
A terminal fitting attached to the housing;
A grounding member attached to the housing;
A filter built-in connector comprising a filter housed in the housing and connected to the terminal fitting and the ground member,
The ground member is
A first member fixed to the housing and connected to the filter;
A plurality of first locking portions provided on the first member;
A second member that is separate from the first member and is grounded;
A plurality of second latches that are provided on the second member and are selectively attached to the first member in a plurality of forms with different orientations by latching to the plurality of first latching portions. And has a feature.

  By changing the combination of the plurality of first locking portions and the plurality of second locking portions, the second member can be selectively attached to the first member in a plurality of different forms. In the present invention, since the positional relationship between the ground member and the terminal fitting can be changed to a plurality of forms only by dividing the ground member into two types of members, an increase in the number of types of components can be suppressed.

Plan view of the filter built-in connector of Example 1 XX sectional view of FIG. Bottom view showing a form in which the grounding part of the grounding member protrudes to the rear of the housing Bottom view showing the grounding part of the grounding member protruding to the side of the housing

  (1) In the filter built-in connector according to the present invention, the plurality of first locking portions and the plurality of second locking portions may be arranged in the same number so as to constitute a vertex of a regular polygon. Good. According to this configuration, since the plurality of first locking portions and the plurality of second locking portions are all locked, the mounting state of the second member and the first member is stabilized.

  (2) In the filter built-in connector according to the present invention, any one of the first locking portion and the second locking portion is elastically bent in the process of attaching the other locking portion. It may be in a possible form. According to this structure, attachment with a 1st latching | locking part and a 2nd latching | locking part becomes easy.

<Example 1>
Embodiment 1 of the present invention will be described below with reference to FIGS. The connector with a built-in filter according to the first embodiment includes a housing 10 made of a synthetic resin, a terminal fitting 20, a pair of capacitors 30 (a filter according to claims), one coil 40, and a ground member 50. Configured. In the following description, the vertical direction is based on the direction shown in FIG. 2, and the left and right sides in FIGS.

<Housing 10>
As shown in FIGS. 1 and 2, the housing 10 is configured by integrally forming a box-shaped member 11 and a hood portion 12. The box-shaped member 11 includes a bottom wall portion 13 having a square shape in plan view and a square cylindrical peripheral wall portion 14 that rises from the outer peripheral edge of the bottom wall portion 13, and has an upper surface that is open over the entire region. ing. The opening on the upper surface of the box-shaped member 11 is closed by a cover 15. At the rear end portion of the bottom wall portion 13, a notch portion 16 having a shape penetrating in the vertical direction is formed. The hood portion 12 has a shape that extends forward from the outer peripheral edge of the front wall portion 17 constituting the peripheral wall portion 14 in a rectangular tube shape.

<Terminal fitting 20>
The terminal fitting 20 has an elongated shape in the front-rear direction as a whole. The pair of terminal fittings 20 are arranged in parallel to the left and right, and are integrated with the housing 10 (box-shaped member 11) by insert molding in a state of passing through the front wall portion 17 in the front-rear direction. A tab 21 constituting the front end side region of the terminal fitting 20 is accommodated in the hood portion 12 and connected to a counterpart terminal (not shown) constituting a circuit (not shown). The welded portion 22 constituting the rear end region of the terminal fitting 20 is accommodated in the box-shaped member 11. A lead wire 32F of the capacitor 30 is connected to the upper surface of the welded portion 22 by solder 33 (welding).

<Capacitor 30>
The capacitor 30 includes a capacitor body 31 and a pair of front and rear lead wires 32F and 32R extending from the capacitor body 31. The capacitor body 31 has a substantially rectangular shape in a side view, and the width dimension is smaller than the front-rear dimension and the vertical dimension. The capacitors 30 are disposed at both left and right end portions in the box-shaped member 11. The pair of lead wires 32 </ b> F and 32 </ b> R are all led upward from the front end portion and the rear end portion on the upper surface of the capacitor body 31. The front lead wire 32 </ b> F led out upward is bent so as to turn forward, and its tip is connected to the upper surface of the welded portion 22 of the terminal fitting 20 by a solder 33 so as to be conductive. Further, the rear lead wire 32R led out upward is turned rearward, and the tip portion thereof is connected to a ground member 50 described later by solder 33 (welding) so as to be conductive.

<Coil 40>
The coil 40 is configured by being spirally wound around the outer periphery of a cylindrical core 41 whose axis is directed in the front-rear direction, and is accommodated in the box-shaped member 11. The coil 40 is disposed between the pair of left and right capacitors 30 while being placed on the upper surface of the bottom wall portion 13. Both ends of the coil 40 are connected to the welded portions 22 of the pair of terminal fittings 20 by solder 33 (welding). The welding of the coil 40 is performed simultaneously in the process of welding the lead wire 32F on the front side of the capacitor 30. As described above, the coil 40 and the two capacitors 30 connected to the ground member 50 and the terminal fitting 20 constitute a π-type filter circuit, and the filter that effectively removes the noise of the circuit connected to the terminal fitting 20. As a function.

<Earth member 50>
As shown in FIGS. 2 to 4, the ground member 50 includes a metal first member 51 and a metal second member 55 that is a separate component from the first member 51. The first member 51 is formed by applying a bending process or the like to a flat metal plate material having a substantially square shape in plan view. As shown in FIGS. 3 and 4, a circular center hole 52 is formed at a substantially central portion of the first member 51, and an equiangular pitch of 90 ° in the circumferential direction is formed at the hole edge of the center hole 52. The four 1st latching | locking parts 53 distribute | arranged by are formed. The four first locking portions 53 are arranged on one circumference and arranged so as to constitute a square apex.

  The first locking portion 53 has a shape extending downward from the hole edge of the center hole 52 at a substantially right angle to the first member 51. A claw portion 54 that is bent so as to be folded back in the direction opposite to the center of the center hole 52 (radially outward in the center hole 52) is formed at the lower end portion (extending end portion) of the first locking portion 53. Yes. The first locking portion 53 can be elastically bent in the horizontal direction (the radial direction in the center hole 52) with the upper end portion (the portion connected to the hole edge of the center hole 52) as a fulcrum.

  The second member 55 is formed by bending or the like on a flat metal plate material having a substantially square shape in plan view. As shown in FIG. 2, the second member 55 includes a substantially flat coupling portion 56 that is superposed on the lower surface of the first member 51 in a surface contact state, and is parallel to the coupling portion 56 and is connected to the coupling portion 56. And a grounding portion 57 that is lowered stepwise. As shown in FIGS. 3 and 4, the coupling portion 56 is formed with four second locking portions 58 in an arrangement corresponding to the four first locking portions 53. The 2nd latching | locking part 58 has comprised the through-hole shape which can let the nail | claw part 54 of the 1st latching | locking part 53 pass. The grounding portion 57 is formed with a through hole attachment hole 59.

  The structure for attaching the ground member 50 to the housing 10 is as follows. The first member 51 is integrated with the housing 10 by insert molding. The first member 51 is disposed so as to overlap the lower surface (outer surface) of the bottom wall portion 13 and closes the cutout portion 16 of the bottom wall portion 13. In the region of the upper surface of the first member 51 that is exposed in the box-shaped member 11 at the notch 16, the tip of the rear lead wire 32R is connected by solder 33 (welding). Further, the four first locking portions 53 extend in a cantilevered manner below the bottom wall portion 13. The lower end (extended end) of the first locking portion 53 is set to the same height as the lower surface of the hood portion 12.

  The second member 55 is assembled to the first member 51 from below the housing 10. When assembling, first, the protruding direction of the grounding portion 57 from the housing 10 is determined. In the present embodiment, the protruding direction of the grounding portion 57 from the housing 10 can be set in three forms. One is a form in which the grounding portion 57 protrudes rearward of the housing 10 as shown in FIG. When the second member 55 is aligned with the first member 51 and the housing 10, the four second locking portions 58 are fitted into the four first locking portions 53. In the process of fitting, the claw portion 54 comes into contact with the hole edge of the second locking portion 58, so that the first locking portion 53 is elastically bent.

  When the upper surface of the coupling portion 56 comes into contact with the lower surface of the first member 51, the first locking portion 53 is elastically restored and the claw portion 54 is locked to the hole edge of the second locking portion 58. Due to these four locking actions, the second member 55 and the first member 51 are held in the assembled state to constitute the ground member 50, and at the same time, the second member 55 is fixed to the housing 10. Then, the positional relationship between the mounting hole 59 of the grounding portion 57 and the tab 21 of the terminal fitting 20 is determined.

  Further, as an assembly form different from FIG. 3, a form in which the grounding portion 57 protrudes to the side of the housing 10 as shown in FIG. 4 is also possible. In this case as well, as with the assembly form shown in FIG. 3, the four first locking portions 53 may be locked with the four second locking portions 58 while being elastically bent.

  In a state where the second member 55 is assembled to the first member 51, the lower surface of the grounding portion 57 is at the same height as the lower surface of the hood portion 12 and the lower end of the first locking portion 53. Therefore, the filter built-in connector can stably connect the lower surface of the hood portion 12, the lower end of the first locking portion 53, and the lower surface of the grounding portion 57 with respect to a flat grounding surface (not shown) in the body of the automobile. It can be made to contact. In this state, the grounding portion 57 comes into contact with the grounding surface in a wide range over the entire area. Then, the ground member 50 is grounded by screwing a bolt (not shown) penetrating through the attachment hole 59 into the ground surface.

<Operation and Effect of Example 1>
The manufacturing process of the filter built-in connector will be described. First, the housing 10 is molded by insert molding, and at the same time, the housing 10 and the pair of terminal fittings 20 are integrated, and the housing 10 and the first member 51 are integrated. Next, the coil 40 and the capacitor 30 are accommodated in the box-shaped member 11, the coil 40 is connected to the terminal fitting 20, and the lead wires 32 </ b> F and 32 </ b> R of the capacitor 30 are connected to the terminal fitting 20 and the first member 51. Thereafter, the second member 55 is assembled to the first member 51. The assembly of the second member 55 and the first member 51 may be performed before the step of connecting the capacitor 30 and the coil 40 with the solder 33.

  The filter built-in connector according to the present embodiment includes a housing 10, a terminal fitting 20 attached to the housing 10, a ground member 50 attached to the housing 10, and a terminal fitting 20 and a grounding member 50 housed in the housing 10. And a positional relationship between the mounting hole 59 of the grounding member 50 and the tab 21 of the terminal fitting 20 (that is, the grounding portion 57 from the housing 10), while suppressing an increase in the number of types of components. The projecting direction) can be changed to a plurality of forms.

  As a means for that purpose, the grounding member 50 is constituted by a first member 51 fixed to the housing 10 and connected to the capacitor 30 and a second member 55 that is separate from the first member 51 and is grounded. . The first member 51 is provided with four first locking portions 53, and the second member 55 is locked with the four first locking portions 53, so that the second member is in contact with the first member 51. Four second locking portions 58 for selectively attaching 55 in a plurality of forms with different directions are provided.

  The filter built-in connector according to the present embodiment changes the combination of the locking of the four first locking portions 53 and the four second locking portions 58 to change the second member 55 with respect to the first member 51. It can be selectively attached in a plurality of forms with different orientations. Therefore, since the positional relationship between the ground member 50 and the terminal fitting 20 can be changed to three forms simply by dividing the ground member 50 into the two types of members 51 and 55, an increase in the number of types of components is suppressed. be able to.

  Further, the same number (four) of the first locking portions 53 and the second locking portions 58 are provided to each other, and are arranged so as to constitute the apex of a regular polygon (square). According to this configuration, in the state where the second member 55 and the first member 51 are assembled, the four first locking portions 53 and the four second locking portions 58 are all locked. The attachment state with the first member 51 is stabilized. Moreover, since the 1st latching | locking part 53 is elastically bent in the attachment process with the 2nd latching | locking part 58, attachment with the 1st latching | locking part 53 and the 2nd latching | locking part 58 is easy. Become.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the same number of first locking portions and second locking portions are provided, but the number of first locking portions and the number of second locking portions may be different from each other.
(2) In the above embodiment, the number of the first locking portions and the second locking portions is four, but the number of the first locking portions and the second locking portions may be three or less, and five. That's all.
(3) In the above embodiment, the first locking portion is configured to be elastically bent and the second locking portion is configured not to be elastically bent. Conversely, the second locking portion can be elastically bent. It is good also as a form which does not bend elastically and a 1st latching | locking part.
(4) In the first embodiment, a π-type filter circuit is configured by two capacitors and one coil. However, in the present invention, the filter circuit is configured by one capacitor and one coil. It can also be applied to the case of being composed of one capacitor or the case of being composed of two capacitors.
(5) In the above embodiment, the lower surface of the second member and the lowermost surface of the housing are flush with each other, but the second member is so positioned that the lower surface of the second member is located further below the lowermost surface of the housing. It is good also as a form bent greatly in the step shape.
(6) In the above embodiment, the second member and the first member are plate-like parallel to each other, but the grounding portion of the second member in which the attachment hole is formed is oriented obliquely with respect to the first member. Or it may be oriented at right angles.

DESCRIPTION OF SYMBOLS 10 ... Housing 20 ... Terminal metal fitting 30 ... Capacitor (filter)
DESCRIPTION OF SYMBOLS 50 ... Ground member 51 ... 1st member 53 ... 1st latching | locking part 55 ... 2nd member 58 ... 2nd latching | locking part

Claims (3)

A housing;
A terminal fitting attached to the housing;
A grounding member attached to the housing;
A filter built-in connector comprising a filter housed in the housing and connected to the terminal fitting and the ground member,
The ground member is
A first member fixed to the housing and connected to the filter;
A plurality of first locking portions provided on the first member;
A second member that is separate from the first member and is grounded;
A plurality of second latches that are provided on the second member and are selectively attached to the first member in a plurality of forms with different orientations by latching to the plurality of first latching portions. And a filter built-in type connector.   2. The filter built-in type according to claim 1, wherein the plurality of first locking portions and the plurality of second locking portions are arranged in the same number so as to form a vertex of a regular polygon. connector.   One of the first locking portion and the second locking portion is configured such that one of the locking portions can be elastically bent in an attachment process with the other locking portion. The filter built-in type connector according to claim 1 or 2.

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