JP2017182953A - connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of holding electric connection reliability even under a high temperature environment.SOLUTION: A connector 1 is equipped with a housing 7 having an insertion portion 5 in which an end portion of a circuit board 3 is inserted, and a plurality of terminals 11 housed in the housing 7, disposed in the insertion portion 5, and provided with a contact portion 9 elastically contacted with a conductor portion of the circuit substrate 3. The terminal 11 has a box portion 13 housing the contact portion 9 so as to project/retract inside and outside, and the housing 7 has an outer housing 17, and an inner housing 21 provided with a push-up portion 19 letting the contact portion 9 out of the box portion 13. The inner housing 21 is formed by heat resistant material.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a connector. Specifically, the present invention relates to a connector having a housing into which an end portion of a circuit board is inserted.

  Conventionally, as a connector, a housing having an insertion portion into which an end portion of a circuit board provided with a plurality of conductor portions is inserted, and accommodated in the housing and disposed in the insertion portion, is elastically formed on the conductor portion of the circuit board. There is known a device including a plurality of terminals for board connection provided with a board connection portion as a contact portion that is in contact with the substrate (see, for example, Patent Document 1).

  In this connector, the housing is provided with an outer housing in which an insertion portion is provided and a locking lance for locking a mating terminal connected to the board connection terminal is provided, and an inner housing that is disposed in the insertion portion and accommodates the board connection terminal. And a housing.

  In such a connector, by arranging the inner housing in the insertion part of the outer housing, the mating terminal and the board connection terminal are electrically connected, and the board connection part of the board connection terminal is arranged in the insertion part. .

  Then, by inserting the end of the circuit board into the insertion part, the board connection part is brought into contact with the conductor part of the circuit board, and the circuit board, the board connection terminal and the mating terminal are electrically connected.

JP-A-2006-9603

  By the way, in the connector as described in Patent Document 1, when used in a high temperature environment such as in an engine room, the outer housing and the inner housing constituting the housing may cause thermal expansion.

  When such thermal expansion occurs, the electrical connection between the conductor part of the circuit board and the board connection part of the board connection terminal, or between the board connection terminal and the mating terminal becomes unstable, and contact occurs. There is a risk that the resistance increases and the electrical connection reliability decreases.

  Therefore, an object of the present invention is to provide a connector that can maintain electrical connection reliability even in a high-temperature environment.

  According to a first aspect of the present invention, there is provided a housing having an insertion portion into which an end portion of a circuit board provided with a plurality of conductor portions is inserted, and a conductor of the circuit board accommodated in the housing and disposed in the insertion portion. A connector provided with a plurality of terminals provided with contact portions that are elastically contacted with the portions, the terminals having a box portion that accommodates the contact portions so as to be able to protrude and retract in and out, and the housing includes An outer housing provided with a locking lance provided with the insertion portion to lock the terminal box portion and position the terminal box portion on the insertion portion; and the terminal box disposed in the insertion portion. And an inner housing provided with a push-up portion for inserting the contact portion out of the box portion, and the inner housing is formed of a heat-resistant material.

  In this connector, since the terminal has a box portion in which the contact portion is housed so as to be able to protrude and retract, the contact portion is not obtained by electrical connection between the two members, and the electrical connection reliability between the two members There is no need to consider.

  In addition, the inner housing provided with a push-up portion that brings the contact portion out of the box is formed of a heat-resistant material, so the inner housing does not thermally expand even when used in a high temperature environment. The contact part of the terminal is not affected.

  Therefore, in such a connector, the number of electrical connection points is reduced, and the inner housing that displaces the contact portion does not thermally expand, so that electrical connection reliability can be maintained even in a high-temperature environment.

  According to the present invention, it is possible to provide a connector that can maintain electrical connection reliability even in a high-temperature environment.

It is sectional drawing when a circuit board is inserted in the connector which concerns on embodiment of this invention. 1 is a perspective view of a connector according to an embodiment of the present invention. It is sectional drawing of the connector which concerns on embodiment of this invention. It is a perspective view of the inner housing of the connector which concerns on embodiment of this invention.

  A connector according to an embodiment of the present invention will be described with reference to FIGS.

  The connector 1 according to the present embodiment includes a housing 7 having an insertion portion 5 into which an end portion of a circuit board 3 provided with a plurality of conductor portions is inserted, and is accommodated in the housing 7 and disposed in the insertion portion 5. And a plurality of terminals 11 provided with contact portions 9 that are elastically contacted with the conductor portions of the circuit board 3.

  Moreover, the terminal 11 has the box part 13 which accommodated the contact part 9 so that the inside and outside were retractable.

  Further, the housing 7 includes an outer housing 17 provided with a locking lance 15 provided with an insertion portion 5 to lock the box portion 13 of the terminal 11 and position the box portion 13 of the terminal 11 on the insertion portion 5. And an inner housing 21 provided with a push-up portion 19 which is disposed in the portion 5 and is inserted into the box portion 13 of the terminal 11 to bring the contact portion 9 out of the box portion 13.

  The inner housing 21 is formed of a heat resistant material.

  As shown in FIGS. 1 to 4, the housing 7 is made of an insulating material and includes an outer housing 17 and an inner housing 21.

  The outer housing 17 is made of a synthetic resin such as PBT, PBT-HF-HS1, and the insertion portion 5 into which the end portion of the substrate unit 23 is inserted is provided on one side surface, and a plurality of terminals 11 are inserted on the other side surface side. A terminal insertion portion 25 is provided.

  As for the board | substrate unit 23 inserted in the insertion part 5 of the outer housing 17, the circuit board 3 is insert-molded in the unit housing 27 which consists of insulating materials, such as a synthetic resin.

  A plurality of conductor portions (not shown) constituting a circuit pattern are provided in a plurality of rows in the width direction at the end portion of the circuit board 3 exposed from the unit housing 27.

  Such a board unit 23 is provided on the side of the plurality of conductors of the circuit board 3 exposed through a rib (not shown) provided on the outer periphery of the unit housing 27 and a groove 29 provided in the outer housing 17. The end portion is inserted into the insertion portion 5 of the outer housing 17 and is locked via a locking portion 31 provided on the unit housing 27 and the outer housing 17.

  In the insertion portion 5 of the outer housing 17, the contact portions 9 of the plurality of terminals 11 are arranged inside, and the end portions of the board unit 23 are inserted, whereby the conductor portions of the circuit board 3 and the terminals 11 are inserted. The contact part 9 is brought into contact, and the substrate unit 23 and the plurality of terminals 11 are electrically connected.

  A terminal insertion portion 25 is provided on the opposite side of the outer housing 17 from the insertion portion 5.

  A plurality of terminals 11 are inserted into the terminal insertion portion 25 of the outer housing 17 from the opening, and the plurality of terminals 11 are accommodated in a terminal accommodating chamber 33 provided inside.

  A plurality of holes into which the plurality of terminals 11 can be inserted are provided on the opening side of the terminal insertion portion 25 of the outer housing 17, and the outer housing 17 and the plurality of terminals 11 are in close contact with the electric wire 35 provided at the terminal portion. A mat seal 37 that waterproofs the inside of the housing 7 is disposed.

  The mat seal 37 is provided with a plurality of holes into which the plurality of terminals 11 can be inserted. The mat seal 37 is arranged in the terminal insertion portion 25 of the outer housing 17 and then assembled to the opening of the terminal insertion portion 25 of the outer housing 17. The cover 39 prevents the outer housing 17 from coming off.

  The plurality of terminals 11 are made of a conductive material and are female terminals having a box portion 13. The plurality of terminals 11 are electrically connected by crimping or the like to the terminal portions of the electric wires 35 that are respectively connected to a power source or equipment.

  The plurality of terminals 11 are inserted on the side of the box portion 13 from the opening of the terminal insertion portion 25 of the outer housing 17 through the holes of the mat seal cover 39 and the mat seal 37 so that the box portion 13 is positioned on the insertion portion 5 side. Is accommodated in the terminal accommodating chamber 33 in the outer housing 17.

  A locking lance 15 is provided in the terminal accommodating chamber 33 so as to be deflectable from the upper wall and the bottom wall.

  The locking lance 15 prevents the terminal 11 from being detached from the outer housing 17 by engaging the end surface of the free end with the box portion 13 of the terminal 11 inserted into the terminal accommodating chamber 33.

  The plurality of terminals 11 are accommodated in the upper and lower stages in the height direction of the outer housing 17 in a vertically symmetrical manner, and are arranged and accommodated in parallel in the width direction of the outer housing 17.

  Thus, the elastic pieces 41 having the contact portions 9 are provided in the box portions 13 of the plurality of terminals 11 accommodated in the outer housing 17.

  The elastic piece 41 has a base end located on the electric wire 35 side of the upper wall of the box portion 13, and after extending from the base end toward the insertion portion 5 side, a portion bent toward the bottom wall side is free. By being bent toward the electric wire 35 side again, the end portion is provided in the box portion 13 so as to be elastically deformable.

  The contact portion 9 is provided so as to protrude toward the bottom wall side of the box portion 13 between the free end and the base end at a portion bent from the free end of the elastic piece 41 toward the electric wire 35 again. ing.

  This contact portion 9 is exposed to the outside of the box portion 13 through a hole formed in the bottom wall of the box portion 13 by elastic deformation toward the bottom wall side of the box portion 13 on the free end side of the elastic piece 41.

  On the other hand, the contact portion 9 is housed in the box portion 13 and protected by the box portion 13 without being exposed to the outside from the box portion 13 when the elastic piece 41 is not elastically deformed.

  By accommodating the contact portion 9 in the box portion 13 in this manner, the contact portion 9 may interfere with peripheral members and the like, for example, when the terminal 11 is transported or when the terminal 11 is accommodated in the outer housing 17. Therefore, the deformation of the elastic piece 41 can be prevented, and a desired contact load between the contact portion 9 and the conductor portion of the circuit board 3 can be obtained.

  In addition, since the contact portion 9 is accommodated in the box portion 13, when the box portion 13 passes through the holes of the mat seal cover 39 and the mat seal 37 when the terminal 11 is accommodated in the outer housing 17. The contact portion 9 does not interfere with the mat seal cover 39 and the mat seal 37, and damage to the mat seal cover 39 and the mat seal 37 can be prevented.

  By accommodating the contact portion 9 in the box portion 13 in this way, only the contact portion 9 is accommodated in the inner housing 21 in order to protect the contact portion 9, and the mating terminal and the contact portion 9 accommodated in the outer housing 17. Need not be electrically connected to each other.

  For this reason, in the electrical connection between the circuit board 3 and the contact portion 9, it is not necessary to consider the electrical connection between the contact portion 9 and the counterpart terminal.

  An inner housing 21 is assembled to the insertion portion 5 of the outer housing 17 that accommodates the terminal 11 having the box portion 13 provided with such a contact portion 9.

  The inner housing 21 is made of heat-resistant synthetic resin such as SF316AC, SK602, and is accommodated and disposed in the inner portion of the outer housing 17 from the insertion portion 5.

  A packing 43 is integrally fixed to the outer periphery of the opening on the insertion portion 5 side of the inner housing 21, and the inner housing 21 is connected to the outer housing via a rib 45 provided on the packing 43 and a groove portion 29 of the outer housing 17. 17 is inserted into the insertion portion 5, and the outer housing 17 and the inner housing 21 are waterproofed by the packing 43.

  A plurality of both ends of the inner housing 21 in the height direction are inserted into the bending space of the locking lance 15 in a state of being disposed in the insertion portion 5 of the outer housing 17 and restrict the bending of the locking lance 15. The restriction protrusion 47 is extended.

  By restricting the bending of the locking lance 15 by the restricting projection 47, the locking lance 15 is not bent in a state where the box portion 13 of the terminal 11 is locked, and the terminal 11 is doubled in the outer housing 17. Can be locked to.

  The inner housing 21 is inserted into the insertion portion 5 of the outer housing 17 on the opposite surface of the inner housing 21 facing the terminal 11, so that the contact portion 9 is inserted into the box portion 13 of the terminal 11. A plurality of push-up portions 19 to be displaced are extended toward the terminal 11 side.

  The plurality of push-up parts 19 are formed symmetrically in the upper and lower stages in the height direction of the inner housing 21 so as to correspond to the plurality of terminals 11 and are arranged in parallel in the width direction of the inner housing 21. Is formed.

  An inclined surface is formed on the distal end side of the push-up portion 19 so as to rise upward from the terminal 11 side toward the inner housing 21 side.

  Such a push-up portion 19 is inserted into the box portion 13 of the terminal 11 when the inner housing 21 is inserted into the insertion portion 5 of the outer housing 17, and the tip side that is an inclined surface is the free end of the elastic piece 41. It abuts on a certain tip side.

  By further inserting the inner housing 21 into the insertion portion 5 of the outer housing 17 from this state, the tip of the elastic piece 41 moves along the inclined surface while sliding with the inclined surface of the push-up portion 19. The free end side is displaced toward the bottom wall of the box portion 13.

  Due to the displacement of the elastic piece 41 by the push-up portion 19, the contact portion 9 provided on the elastic piece 41 is brought out of the box portion 13 through the hole in the bottom wall of the box portion 13.

  The state in which the contact portion 9 is exposed to the outside of the box portion 13 is a state in which the inner housing 21 is completely assembled to the outer housing 17, and the lower surface on the free end side of the elastic piece 41 is the upper surface of the push-up portion 19. By abutting, the displacement of the elastic piece 41 into the box portion 13 is restricted and held.

  In this way, the contact portion 9 that has come out of the box portion 13 becomes a pair of contact portions 9 and 9 that face each other in the height direction of the housing 7.

  Between the pair of contact portions 9, 9, the substrate unit 23 is inserted into the insertion portion 5 of the housing 7, whereby the end portion of the substrate unit 23 is inserted, and the conductor portion of the circuit board 3 and the contact portion 9, 9 is contacted, and the substrate unit 23 and the plurality of terminals 11 are electrically connected.

  In such a connector 1, the inner housing 21 is made of a heat-resistant synthetic resin.

  The push-up portion 19 of the inner housing 21 is in contact with the elastic piece 41 provided with the contact portion 9 so that the contact portion 9 is exposed to the outside of the box portion 13.

  For this reason, even if the connector 1 is disposed in a high temperature environment such as in the engine room, the push-up portion 19 of the inner housing 21 does not thermally expand, and the position of the contact portion 9 varies. There is nothing.

  Therefore, the contact between the conductor portion of the circuit board 3 and the pair of contact portions 9 and 9 is held with a desired contact load, the electrical connection state is not unstable, the contact resistance is increased, and the electrical connection Reliability is not reduced.

  In such a connector 1, since the terminal 11 has the box part 13 which accommodated the contact part 9 so that it could protrude in and out, the contact part 9 was not obtained by the electrical connection between two members, but between two members There is no need to consider the electrical connection reliability.

  Further, since the inner housing 21 provided with the push-up portion 19 for bringing the contact portion 9 out of the box portion 13 is formed of a heat resistant material, the inner housing 21 is thermally expanded even when used in a high temperature environment. The contact portion 9 of the terminal 11 is not affected.

  Accordingly, in such a connector 1, the number of electrical connection points is reduced, and the inner housing 21 that displaces the contact portion 9 does not thermally expand, so that electrical connection reliability is maintained even in a high temperature environment. Can do.

  In the connector according to the embodiment of the present invention, the plurality of terminals arranged in a plurality of rows in the width direction of the housing are arranged in two stages. However, the present invention is not limited to this, and four or more stages are arranged. A plurality of insertion portions into which the end portions are inserted may be provided.

  Moreover, although the contact part of a terminal becomes a pair of contact part by arrange | positioning a terminal vertically symmetrically, you may provide a pair of contact part in one terminal.

DESCRIPTION OF SYMBOLS 1 ... Connector 3 ... Circuit board 5 ... Insertion part 7 ... Housing 9 ... Contact part 11 ... Terminal 13 ... Box part 15 ... Locking lance 17 ... Outer housing 19 ... Push-up part 21 ... Inner housing

Claims (1)

A housing having an insertion portion into which an end portion of a circuit board provided with a plurality of conductor portions is inserted, and is accommodated in the housing and disposed in the insertion portion and elastically contacts the conductor portion of the circuit board. A connector having a plurality of terminals provided with contact portions,
The terminal has a box portion that accommodates the contact portion so as to be able to appear in and out,
The housing includes the outer housing provided with the insertion portion, the outer housing provided with a locking lance for locking the box portion of the terminal and positioning the box portion of the terminal at the insertion portion, and the insertion portion. An inner housing provided with a push-up portion that is inserted into the box portion of the terminal and causes the contact portion to be moved out of the box portion;
The connector is characterized in that the inner housing is formed of a heat resistant material.

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