JP6056530B2 - Joint connector with built-in noise filter - Google Patents

Description

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

2. Description of the Related Art Conventionally, a type called a joint connector is known as a connector that collectively connects a plurality of electric wires derived from a plurality of electronic devices mounted on an automobile or the like. Among them, various types containing a capacitor as a noise filter element have been developed. As an example, Patent Document 1 below can be cited.
Here, there is disclosed a structure in which a plurality of bus bar pieces and a capacitor connected between the two bus bar pieces through each lead wire are incorporated in the housing.

JP 2007-287644 A

  However, in the configuration described above, sufficient consideration is not given to the support for the capacitor, and the capacitor itself is in a hollow state and is not supported by the housing or the bus bar piece. Therefore, there has been a concern that the connection reliability between the lead wire and the bus bar piece may be reduced when receiving vibration during traveling from an automobile or the like.

  This invention is completed based on the above situations, Comprising: It aims at providing the joint connector which can support the electric element for noise filters stably.

The noise filter built-in joint connector of the present invention is a joint connector incorporating a noise filter electrical element,
A connector housing comprising a first chamber and a second chamber;
A plurality of joint terminal pieces having a plurality of tab portions juxtaposed in a state protruding into the first chamber and a connection portion protruding into the second chamber,
The noise filter electrical element is housed in the second chamber and connected to the connection portion of the joint terminal piece, and is supported by a support portion formed integrally with the joint terminal piece and extending into the second chamber. ,
The extending end portion of the support portion is inserted into the wall surface of the second chamber .

  According to the present invention, since the noise filter electrical element is supported by the support portion formed integrally with the joint terminal piece, the noise filter electrical element can be stably supported.

Plan sectional view of the joint connector in this embodiment Same side sectional view Perspective view showing upper and lower joint terminal pieces The perspective view which shows the state in which the joint terminal piece of the lower stage side is lined up with the carrier Front sectional view showing the support state of the capacitor

  A preferred embodiment of the present invention will be described.

(1) In the joint connector with built-in noise filter of the present invention, it is preferable that each joint terminal piece is connected to the carrier so as to be detachable by a connecting piece, and the support portion is the connecting piece.
According to such a structure, since a support part can be comprised using the existing connection piece, it is not necessary to provide the support part for exclusive use for supporting the electrical element for noise filters.

(2) The noise filter electric element is an aluminum electrolytic capacitor, and a pair of lead wires are drawn from a lead surface formed on one end face of the capacitor, while the capacitor has a lead surface with respect to the support portion. It is good also as a structure which is supported by the attitude | position which faced the extending direction of this, and both lead wires are return | folded from the drawer surface and the front-end | tip part is connected with the connection part.
Contrary to such a configuration, if the direction of the lead surface from which the lead wire is drawn out in the direction of installation of the aluminum electrolytic capacitor is opposite to the extending direction of the support portion, it should be electrolyzed from the part where the lead wire is drawn out. When the liquid leaks, there is a concern about a short circuit because it is close to the tab portion, so that countermeasure is required. However, if the direction of the lead-out surface of the aluminum electrolytic capacitor is along the extending direction of the support part, the distance from the lead wire to the tab part should be long enough even if electrolyte leakage occurs. Since it can be secured, there is almost no risk of a short circuit.

Next, Example 1 that embodies the joint connector with built-in noise filter of the present invention will be described with reference to the drawings.
<Example 1>
The connector housing 1 of the joint connector according to the present embodiment is made of a synthetic resin and has a two-body configuration including a main body 2 and a lid 3. The main body 2 is integrally formed with a rectangular tube-shaped hood (first chamber) 4 that opens forward. In the main body 2, a capacitor housing chamber (second chamber) 5 is formed on the rear side of the hood portion 4, and a capacitor 6 as a noise filter electric element is housed in the capacitor housing chamber 5. The capacitor housing chamber 5 is open on the upper surface side and the rear surface side, and these open surfaces are closed by the lid portion 3. The hood portion 4 and the capacitor accommodation chamber 5 are partitioned by a partition wall 7. A convex portion 19 is formed on the bottom surface in the capacitor housing chamber 5, and an insertion groove 15 is formed on the upper surface of the convex portion 19.

The lid 3 includes an upper wall 3A that closes the upper surface side of the capacitor housing chamber 5 and a rear wall 3B that extends downward from the rear edge of the upper wall 3A and closes the rear surface side of the capacitor housing chamber 5. Has been. The lid 3 is provided with a locking means (not shown). The locking means can be locked to the main body 2 with the lid 3 closing the open surface of the capacitor housing chamber 5.
Next, the joint terminal pieces UJ and LJ will be described. In the present embodiment, two joint terminal pieces UJ and LJ are provided, and these are assembled side by side with respect to the connector housing 1. As shown in FIG. 3, both joint terminal pieces UJ and LJ are formed by punching a conductive metal plate with a press, and a plurality of tab portions 9 are formed in a comb-teeth shape on the front edge of the substrate portion 8. It has a protruding configuration. Both joint terminal pieces UJ and LJ are assembled by press-fitting into the partition wall 7 from behind. Specifically, the partition wall 7 is formed with a pair of upper and lower holding grooves 10 into which the board portions 8 of the joint terminal pieces UJ and LJ are press-fitted. The upper and lower holding grooves 10 are formed in a slit shape that opens on the rear surface side of the partition wall 7 and is long in the width direction, and the front wall 10A is formed with a tab insertion hole 11 through which each tab portion 9 can be inserted. Has been. As a result, a plurality of tab portions 9 protrude in the hood portion 4 in a state where the tab portions 9 are arranged in two upper and lower stages and in parallel in the width direction.

  In the joint terminal piece arranged on the upper side (hereinafter referred to as the upper stage joint terminal piece UJ), it is connected to the rear edge of the board portion 8 toward one end (right end portion in the drawing) toward the rear. The part 12 extends integrally. The connection portion 12 in the joint terminal piece (hereinafter referred to as the lower-stage side joint terminal piece LJ) arranged on the lower side is provided at a rear edge of the board portion 8 and near the left end in the figure. As shown in FIGS. 2 and 3, the connecting portion 12 of the lower joint terminal piece LJ is bent in a crank shape upward. In the state where the upper and lower joint terminal pieces UJ and LJ are assembled to the connector housing 1, the height of the upper surface of the tip of the connecting portion 12 in the lower joint terminal piece LJ is the upper surface of the connecting portion 12 of the upper joint terminal piece UJ. It is almost flush with it. Further, a support portion 13 for supporting the capacitor 6 is integrally extended rearward at the rear edge of the substrate portion 8 in the lower joint terminal piece LJ and in the center portion in the width direction.

  As shown in FIG. 4, the lower joint terminal piece LJ is cut out and used by cutting off the connection to the carrier 14 from a state where a plurality of the lower joint terminal pieces LJ are connected to the carrier 14 at a constant pitch interval. The support portion 13 described above is also a portion that is connected to the carrier 14, and a narrow portion 13 </ b> A is formed at the distal end portion of the support portion 13 to easily break the connection with the carrier 14. As shown in FIG. 2, the front end side of the support portion 13 is bent downward. The narrow portion 13A is thrust into the insertion groove 15 of the convex portion 19 and supports the support portion 13 in a horizontal state.

  An aluminum electrolytic capacitor is used as the capacitor 6 of this embodiment, and one end face thereof is a lead-out face 16, from which two lead wires 17A and 17B are drawn out. As shown in FIG. 1, the capacitor 6 is placed on the support portion 13 with the drawing surface 16 facing rearward. Then, both lead wires 17A and 17B are drawn back substantially straight from the drawing surface 16 and then folded back into a substantially U shape. Then, one lead wire 17A is connected to the distal end portion of the connecting portion 12 of the upper joint terminal piece UJ by soldering, and the other lead wire 17B is connected to the distal end portion of the connecting portion 12 of the lower joint terminal piece LJ. Soldered.

  Further, as shown in FIG. 5, a pressing member 18 is attached to a corresponding position above the capacitor 6 on the inner surface of the lid portion 3. A pressing surface 18A having a concave shape that matches the shape of the outer peripheral surface of the capacitor 6 is formed on the lower surface of the pressing member 18, and the pressing member 18 is pressed while the lid portion 3 is attached to the connector housing 1. The surface 18 </ b> A is in close contact with the outer peripheral surface of the capacitor 6, and is held in a state where the capacitor 6 is sandwiched from above and below with the support portion 13.

  Next, the function and effect of the present embodiment configured as described above will be described. First, an example of the assembly operation of the joint connector will be described. Both the joint terminal pieces UJ and LJ are press-fitted into the corresponding holding grooves 10 from the rear with respect to the connector housing 1 with the lid 3 removed. At this time, the tab portions 9 of the joint terminal pieces UJ and LJ are inserted into the corresponding tab insertion holes 11, and the front edge of the substrate portion 8 is brought into contact with the front wall 10 </ b> A in the holding groove 10. Thereby, the board | substrate part 8 is press-fit in the holding groove 10, and is hold | maintained. Thus, the connection portions 12 of the joint terminal pieces UJ and LJ attached to the connector housing 1 are both held at substantially the same height.

  Subsequently, the capacitor 6 is placed on the support portion 13 of the lower joint terminal piece LJ while the lead wires 17A and 17B of the capacitor 6 are folded in a U shape and the lead surface 16 is directed rearward. At this time, the capacitor 6 may be fixed on the support portion 13 by using an adhesive means such as an adhesive.

  Finally, if the lid portion 3 is attached to the main body portion 2 via a locking means (not shown), the upper surface side and the rear surface side of the main body portion 2 are closed.

  The noise current is removed from the upper joint terminal piece UJ via the lead wire 17A, the capacitor 6, the lead wire 17B, and the lower joint terminal piece LJ, connected to the ground (not shown).

  The effect of the present embodiment is as follows. In this embodiment, the capacitor 6 that is an electric element for noise filter is supported by the support portion 13 that is integrally formed with the lower joint terminal piece LJ, so that the capacitor 6 is stably supported. Furthermore, since the support part 13 is supported by both ends by the convex part 19 formed in the partition wall 7 and the bottom face in the capacitor | condenser storage chamber 5, the capacitor | condenser 6 is supported more stably.

  Since it is clamped between the pressing member 18 and the support portion 13 of the lid portion 3, the upper and lower rattling can be suppressed, and the pressing member 18 presses the upper half of the outer peripheral surface of the capacitor 6. Therefore, rattling in the width direction can also be suppressed.

  The capacitor 6 is arranged so that the lead-out surfaces 16 of the lead wires 17A and 17B are directed rearward. If the capacitor 6 is arranged with the lead-out surface 16 facing forward, in the unlikely event that the electrolyte solution leaks from the base portion of the lead wires 17A and 17B, each of the lead wires 17A and 17B through which the electrolyte solution is transmitted Although the length to the tab portion 9 is short and there is a fear of a short circuit, the distance until the electrolyte reaches the tab portion 9 side through the lead wires 17A and 17B if it is arranged rearward as in this embodiment. Is convenient for avoiding short circuit.

  Moreover, the support part 13 which supports the capacitor | condenser 6 utilizes the connection piece with the carrier 14 as it is. That is, since the capacitor 6 is supported by using a member that is originally cut off, the material can be effectively used.

  As described above, according to the present invention, since the noise filter electrical element 6 is supported by the support portion 13 formed integrally with the joint terminal piece LJ, the noise filter built-in type that stably supports the noise filter electrical element 6 is provided. A joint connector can be provided.

<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, both joint terminal pieces are held by press fitting to the partition wall 7, but may be held by insert molding.
(2) Although the aluminum electrolytic capacitor is used as the noise filter electrical element in the above embodiment, other capacitors such as a film capacitor and a ceramic capacitor may be used.
(3) Although one noise filter electric element is mounted in the above embodiment, the present invention is not limited to this, and two or more electric elements may be mounted.
(4) In the above embodiment, both joint terminal pieces and capacitor lead wires are connected by soldering. However, the present invention is not limited to this, and may be connected using resistance welding or laser welding.
(5) In the above embodiment, the connector housing is constituted by the two members of the main body portion and the lid portion. However, the present invention is not limited to this.

1 ... Connector housing 4 ... Hood (first chamber)
5. Capacitor storage chamber (second chamber)
6 ... Capacitor (electric element for noise filter)
UJ, LJ: Upper and lower joint terminal pieces (joint terminal pieces)
DESCRIPTION OF SYMBOLS 9 ... Tab part 12 ... Connection part 13 ... Support part 14 ... Carrier 16 ... Lead-out surface 17A, B ... Lead wire

Claims (3)

A joint connector with a built-in noise filter electrical element,
A connector housing comprising a first chamber and a second chamber;
A plurality of joint terminal pieces having a plurality of tab portions juxtaposed in a state of protruding into the first chamber and a connecting portion protruding into the second chamber;
The noise filter electrical element is housed in the second chamber and connected to the connection portion of the joint terminal piece, and is integrally formed with the joint terminal piece and extends into the second chamber. Is supported by the department ,
A joint connector with a built-in noise filter , wherein an extended end portion of the support portion is inserted into a wall surface of the second chamber .   2. The noise filter built-in joint connector according to claim 1, wherein each of the joint terminal pieces is detachably connected to the carrier by a connecting piece, and the support portion is the connecting piece.   The noise filter electrical element is an aluminum electrolytic capacitor, and the capacitor has a pair of lead wires drawn out from a lead surface formed on one end face thereof, while the capacitor has the lead surface with respect to the support portion. 3. The support portion according to claim 1, wherein the lead portion is supported in a posture facing the extending direction of the support portion, and both the lead wires are folded back from the lead-out surface and the tip end portion is connected to the connection portion. The joint connector with built-in noise filter described in 1.

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