JP2018156764A - connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of stably holding a terminal in a terminal housing chamber.SOLUTION: A connector 1 comprises: a terminal housing chamber 3; a terminal 7, having a connection 5 housed in the terminal housing chamber 3; and a locking lance 11, bendably provided in the terminal housing chamber 3, the locking lance 11 having a locking projection 9 for locking the terminal 7. The connection 5 of the terminal 7 is provided with a fitting protrusion 13 which is fitted to the locking projection 9 of the locking lance 11 in a separation direction from the terminal housing chamber 3 for the terminal 7. Between the locking projection 9 and the fitting protrusion 13, there are provided: a projecting part 15 which is provided to project toward an insertion/extraction direction into/from the terminal housing chamber 3 for the terminal 7; and an insertion recess 17 into which the projecting part 15 is inserted with the locking projection 9 and the fitting protrusion 13 fitted to each other.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a connector. In detail, it is related with the connector which has the latching lance which latches the terminal accommodated in a terminal storage chamber.

  2. Description of the Related Art Conventionally, as a connector, a terminal accommodating chamber, a terminal having a connecting portion accommodated in the terminal accommodating chamber, and a latching protrusion for latching the terminal are provided in the terminal accommodating chamber so as to be bent. What is provided with the flexible piece as a stop lance is known (for example, refer to patent documents 1).

  In this connector, the connecting portion of the terminal is provided with a locking protrusion of the locking lance and a falling protrusion as an engaging protrusion that engages the terminal in a direction away from the terminal accommodating chamber. The terminal is prevented from coming off from the terminal accommodating chamber by the engagement with the falling projecting piece.

JP 2005-294230 A

  However, in the connector as described in Patent Document 1, when an external force such as an electric wire pulling force is applied to the terminal in the terminal accommodating chamber via the electric wire, the engagement between the engaging convex portion of the terminal and the engaging protrusion of the engaging lance. There is a possibility that the misalignment occurs in the mating surface, the engagement margin between the engaging surfaces becomes insufficient, and the holding of the terminal in the terminal accommodating chamber becomes unstable.

  Accordingly, an object of the present invention is to provide a connector that can stabilize the holding of the terminal in the terminal accommodating chamber.

  The invention according to claim 1 has a terminal accommodating chamber, a terminal having a connecting portion accommodated in the terminal accommodating chamber, and a locking projection for locking the terminal, and is provided in the terminal accommodating chamber so as to be deflectable. A connector having a locking lance that is engaged with the connecting portion of the terminal in a direction in which the locking protrusion of the locking lance and the terminal are detached from the terminal accommodating chamber. A protrusion is provided between the locking protrusion and the engaging protrusion, and a protrusion protruding toward the insertion / extraction direction of the terminal with respect to the terminal accommodating chamber, and the locking protrusion And an insertion recess into which the projection is inserted in a state in which the engagement projection is engaged.

  In this connector, a protrusion projecting in the insertion / extraction direction of the terminal with respect to the terminal accommodating chamber, and the engagement protrusion and the engagement protrusion are engaged between the engagement protrusion and the engagement protrusion. In this state, an insertion recess into which the projection is inserted is provided, so that the engagement position between the engagement projection of the terminal and the locking projection of the locking lance is maintained by inserting the projection into the insertion recess. can do.

  For this reason, even if an external force such as an electric wire pulling force is applied to the terminal in the terminal accommodating chamber via the electric wire, a positional deviation on the engaging surface between the engaging convex portion of the terminal and the engaging protrusion of the engaging lance is suppressed. It is possible to maintain the engagement allowance on the mutual engagement surfaces.

  Therefore, in such a connector, the holding of the terminal in the terminal accommodating chamber can be stabilized.

  Invention of Claim 2 is the connector of Claim 1, Comprising: The said engagement convex part is either the direction orthogonal to the insertion / extraction direction with respect to the said terminal accommodating chamber of the said terminal with respect to the center of the said connection part. It is arranged on one side.

  In this connector, since the engaging convex portion is arranged on either side of the direction perpendicular to the insertion / extraction direction of the terminal with respect to the terminal accommodating chamber with respect to the center of the connecting portion, the electric wire is connected to the terminal in the terminal accommodating chamber. When an external force such as an electric wire pulling force is applied via the vias, the engagement margin between the engaging projections of the terminals and the engaging projections of the engaging lances tends to be insufficient.

  However, even when the engaging convex portion is arranged on one side of the connecting portion, the engagement position between the engaging convex portion of the terminal and the engaging protruding portion of the engaging lance is caused by the insertion of the protruding portion into the inserting recessed portion. Since it is hold | maintained, the engagement margin in the engagement surface of an engagement convex part and a latching protrusion can be ensured, and a terminal can be stably hold | maintained in a terminal storage chamber.

  According to the present invention, there is an effect that it is possible to provide a connector capable of stabilizing the holding of the terminal in the terminal accommodating chamber.

1 is a perspective view of a connector according to an embodiment of the present invention. It is a perspective view when the connector of FIG. 1 is seen from the reverse side. (A) is a perspective view of the terminal of the connector concerning an embodiment of the invention. (B) is a perspective view when the terminal of Fig.3 (a) is seen from the reverse side. (A) is a perspective view of the terminal accommodating chamber of the connector which concerns on embodiment of this invention. FIG. 4B is a side view of FIG. It is a front view when the terminal of the connector which concerns on embodiment of this invention is accommodated in the terminal accommodating chamber. (A) is AA sectional drawing of FIG. (B) is BB sectional drawing of FIG. It is the front view which made the cross section a part when the terminal of the connector which concerns on embodiment of this invention was accommodated in the terminal accommodating chamber.

  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 terminal accommodating chamber 3, a terminal 7 having a connecting portion 5 accommodated in the terminal accommodating chamber 3, and a locking projection 9 for locking the terminal 7. A locking lance 11 is provided in the housing chamber 3 so as to be able to bend.

  Further, the connecting projection 5 of the terminal 7 is provided with an engaging projection 13 that engages in the direction in which the locking projection 9 of the locking lance 11 and the terminal 7 are detached from the terminal accommodating chamber 3.

  And between the latching protrusion 9 and the engagement convex part 13, the protrusion part 15 projected toward the insertion / extraction direction with respect to the terminal storage chamber 3 of the terminal 7, and the latching protrusion part 9 and the engagement convex part are provided. An insertion recess 17 into which the protrusion 15 is inserted in a state in which the portion 13 is engaged is provided.

  Further, the engaging convex portion 13 is arranged on either side of the direction perpendicular to the insertion / extraction direction of the terminal 7 with respect to the terminal accommodating chamber 3 with respect to the center of the connecting portion 5.

  As shown in FIGS. 1 to 7, the connector 1 includes a housing 19 made of an insulating material such as a synthetic resin, and a lever 21 is rotatably attached to the housing 19.

  The housing 19 can be fitted to a mating housing (not shown) by the rotation of the lever 21.

  Such a housing 19 is provided with a plurality of terminal accommodating chambers 3, and is accommodated in a plurality of mating terminals (not shown) accommodated in the mating housing and a plurality of terminal accommodating chambers 3 by fitting with the mating housing. The plurality of terminals 7 are electrically connected.

  The terminal accommodating chamber 3 has an insertion opening 23 into which one end in the length direction is inserted, and the other end in the length direction is a male terminal of a mating terminal connected to the terminal 7 accommodated therein. This is a connection opening 25 into which a tab-like connection portion (not shown) is inserted.

  A plurality of terminals 7 are accommodated in the plurality of terminal accommodating chambers 3 from the insertion openings 23 on one end side in the length direction.

  The terminal 7 is formed of a single member in which the wire connecting portion 27 and the connecting portion 5 are continuous by performing punching processing, bending processing, or the like on a single plate material made of a conductive material.

  The electric wire connection portion 27 includes a covering crimping portion 29 and a core wire crimping portion 31.

  The covering crimping portion 29 is composed of a pair of crimping pieces, and crimps the covering portion of the electric wire 33 at the terminal portion of the electric wire 33 connected to a power source or equipment.

  The terminal 7 is fixed to the electric wire 33 by caulking the covering crimp portion 29 to the covering portion of the electric wire 33.

  The core wire crimping portion 31 is composed of a pair of crimping pieces provided between the connecting portion 5 and the covering crimping portion 29, and caulking the core wire portion exposed from the covering portion of the electric wire 33 at the terminal portion of the electric wire 33. Crimped.

  By crimping the core wire crimping portion 31 to the core wire portion of the electric wire 33, the terminal 7 is electrically connected to the electric wire 33.

  The connection portion 5 is formed of a single member whose bottom wall is continuous with the wire connection portion 27, and includes a female connection portion 5 formed in a box shape by bending both side walls and the upper wall.

  The connecting portion 5 is provided with an elastic piece 37 having a contact portion 35 so as to be elastically deformable so as to have a predetermined urging force by a single member continuous with the connecting portion 5.

  Such a connection portion 5 is provided with an opening on one end side in the length direction, and a tab-like connection portion of a mating terminal is inserted into the inside from this opening, and the contact portion 35 is tabbed by the urging force of the elastic piece 37. The terminal 7 and the mating terminal are electrically connected by coming into contact with the connection portion.

  The terminal 7 having such a box-shaped connecting portion 5 is inserted into the terminal accommodating chamber 3 from the insertion opening 23 of the terminal accommodating chamber 3 and is latched by a locking lance 11 provided in the terminal accommodating chamber 3. This prevents the terminal housing chamber 3 from coming off.

  The locking lance 11 is formed of one member whose base end side is continuous with the bottom wall of the terminal accommodating chamber 3, and whose free end side is inclined toward the inside of the terminal accommodating chamber 3 so that a tab-shaped connecting portion is inserted. It is arrange | positioned at the 25 side and is provided so that it can bend in the up-down direction in the terminal accommodating chamber 3.

  On the free end side of the locking lance 11, a locking projection 9 that engages with an engaging projection 13 provided on the terminal 7 projects upward with one member continuous with the locking lance 11. Has been.

  The locking projection 9 of the locking lance 11 and the engaging projection 13 of the terminal 7 are arranged in a direction in which the terminal 7 is detached from the terminal accommodating chamber 3 in a state where the terminal 7 is accommodated in the terminal accommodating chamber 3. The terminals 7 are locked in the terminal accommodating chamber 3 by engaging the opposing engaging surfaces.

  Here, the connection opening 25 into which the tab-shaped connection portion of the terminal accommodating chamber 3 is inserted is formed in the front holder 39 assembled to the housing 19.

  The front holder 39 is disposed on the distal end side of the connection portion 5 of the terminal 7 locked to the locking lance 11 in a state assembled to the housing 19, and further to the terminal accommodating chamber 3 of the terminal 7. Restrict insertion.

  Such a front holder 39 is provided with a restricting portion (not shown) that is inserted into a space that allows the locking lance 11 located below the locking lance 11 to bend.

  When the terminal 7 is inserted into the terminal accommodating chamber 3, the restricting portion is temporarily inserted into the front holder 39 with respect to the housing 19, and is not inserted into the space located below the locking lance 11, The locking lance 11 can be bent, and the locking lance 11 can lock the terminal 7.

  On the other hand, after the terminal 7 is accommodated in the terminal accommodating chamber 3, the restricting portion is inserted into a space located below the locking lance 11 by bringing the front holder 39 into the main locking state with respect to the housing 19. The locking lance 11 is prevented from being bent and the locking of the terminal 7 by the locking lance 11 is prevented from being released.

  Note that the locking lance 11 is bent downward by a release jig (not shown) on both sides in the width direction of the locking projection 9 of the locking lance 11 to engage the locking projection 9 with the terminal 7. A release portion 41 for releasing the engagement with the convex portion 13 is provided.

  The engaging projection 13 that engages with the locking projection 9 of the locking lance 11 is provided at the connection portion 5 of the terminal 7.

  The engaging convex portion 13 is provided on the distal end side of the connecting portion 5 of the terminal 7 so as to protrude outward from the upper wall of the connecting portion 5 with one member continuous with the connecting portion 5.

  The engagement convex portion 13 is arranged on either side of the direction orthogonal to the straight line in the insertion / extraction direction of the terminal 7 passing through the center of the connection portion 5 with respect to the terminal accommodating chamber 3.

  In this manner, by disposing the engaging convex portion 13 at a position different from the center of the connecting portion 5 in the length direction, it is possible to prevent erroneous insertion of the terminal 7 into the terminal accommodating chamber 3.

  On the side of the electric wire connecting portion 27 of the engaging convex portion 13, a notched portion 43 is provided by notching the upper wall of the connecting portion 5 so that the engaging protrusion 9 of the engaging lance 11 can be inserted. The locking projection 9 of the locking lance 11 restored from the elastic deformation is inserted.

  The end surface of the engaging projection 13 positioned on the side of the notch 43 is an engaging surface that faces the locking projection 9 of the locking lance 11 and the terminal 7 in the direction of detachment from the terminal accommodating chamber 3. The engaging surface is also disposed inside the notch 43.

  In this way, the notch 43 into which the locking protrusion 9 of the locking lance 11 can be inserted is provided, and the engaging surface of the engaging protrusion 13 is provided inside the notch 43, thereby engaging with the engaging protrusion 13. Engagement allowance on the mutual engagement surface with the stop protrusion 9 can be sufficiently secured, and the terminal 7 can be stably prevented from coming off from the terminal accommodating chamber 3.

  The terminal 7 provided with such an engaging convex portion 13 is accommodated in the terminal accommodating chamber 3 from the insertion opening 23 of the terminal accommodating chamber 3, and the distal end side of the connecting portion 5 is inserted while sliding with the locking lance 11. As a result, the locking lance 11 is bent downward.

  When the terminal 7 is disposed at the regular position in the terminal accommodating chamber 3, the locking lance 11 is restored, the locking projection 9 is inserted into the notch 43 of the connection portion 5, and the engagement projection 13 The locking projection 9 is engaged, and the terminal 7 is prevented from coming off from the terminal accommodating chamber 3.

  In this way, a protrusion 15 and an insertion recess 17 are provided between the locking protrusion 9 and the engagement protrusion 13 that prevent the terminal 7 from coming out of the terminal accommodating chamber 3.

  The protruding portion 15 is provided in a hemispherical shape from the engagement surface of the locking projection 9 of the locking lance 11 with the engaging convex portion 13 in the insertion direction of the terminal 7 into the terminal accommodating chamber 3.

  The insertion recess 17 is recessed toward the insertion direction of the terminal 7 into the terminal accommodating chamber 3 so that the protrusion 15 can be inserted from the engagement surface of the engagement protrusion 13 of the terminal 7 with the locking protrusion 9. It has become a space part.

  The projection 15 and the insertion recess 17 are inserted into the insertion recess 17 when the locking lance 11 is restored and the locking projection 9 and the engagement projection 13 are engaged.

  By inserting the projection 15 into the insertion recess 17, the engagement position between the locking projection 9 and the engagement projection 13 can be maintained.

  For this reason, even if an external force such as a pulling force is applied to the electric wire 33 drawn out from the housing 19, it is indicated by a virtual line in FIG. In this way, the engagement projection 13 is not displaced and the engagement margin is not insufficient, and the engagement margin between the locking projection 9 and the engagement projection 13 can be ensured.

  In particular, since the engaging convex portion 13 is disposed at a position different from the center in the length direction of the connecting portion 5, misalignment with respect to the locking protrusion 9 is likely to occur due to an external force applied to the housing 19 and the electric wire 33. ing.

  However, since the engagement position between the locking projection 9 and the engagement projection 13 is held by the insertion of the projection 15 into the insertion recess 17, the engagement projection 13 is engaged with the locking projection 9. Therefore, it is possible to secure an engagement allowance between the locking projection 9 and the engagement projection 13 without causing positional displacement.

  In such a connector 1, the protrusion 15 projecting in the insertion / extraction direction of the terminal 7 with respect to the terminal accommodating chamber 3 between the engagement protrusion 9 and the engagement protrusion 13, and the engagement protrusion 9 Since the insertion recess 17 into which the projection 15 is inserted in a state where the projection 13 is engaged with the engagement projection 13, the engagement projection 13 of the terminal 7 is inserted by inserting the projection 15 into the insertion recess 17. And the engaging position of the locking lance 11 with the locking projection 9 can be maintained.

  For this reason, even if an external force such as an electric wire pulling force is applied to the terminal 7 in the terminal accommodating chamber 3 via the electric wire 33, the engagement protrusion 13 of the terminal 7 and the engagement protrusion 9 of the engagement lance 11 are engaged. The positional deviation on the mating surface can be suppressed, and the engagement allowance on the mutual engaging surfaces can be maintained.

  Therefore, in such a connector 1, the holding of the terminal 7 in the terminal accommodating chamber 3 can be stabilized.

  Moreover, since the engagement convex part 13 is arrange | positioned with respect to the center of the connection part 5 in any one side of the direction orthogonal to the insertion / extraction direction with respect to the terminal storage chamber 3 of the terminal 7, When an external force such as an electric wire pulling force is applied to the terminal 7 via the electric wire 33, the engagement margin on the engaging surface between the engaging convex portion 13 of the terminal 7 and the engaging protrusion 9 of the engaging lance 11 is increased. It tends to be insufficient.

  However, even when the engaging convex portion 13 is arranged on one side of the connecting portion 5, the engaging protrusion 13 of the terminal 7 and the locking protrusion of the locking lance 11 are inserted by inserting the protruding portion 15 into the inserting concave portion 17. Since the engagement position with the portion 9 is held, the engagement margin on the engagement surface between the engagement convex portion 13 and the locking projection 9 can be secured, and the terminal 7 is stably held in the terminal accommodating chamber 3. can do.

  In the connector according to the present embodiment, the protrusion is provided on the locking protrusion of the locking lance, and the insertion recess is provided on the engagement protrusion of the terminal. You may provide in an engagement convex part and may provide an insertion recessed part in the latching protrusion of a latching lance.

  Further, the front holder is assembled to the housing and the connection opening of the terminal accommodating chamber is formed. However, the present invention is not limited to this, and the connection opening may be formed in the terminal accommodating chamber without assembling the front holder to the housing. .

  Furthermore, although the lever is assembled | attached to the housing, it is not restricted to this, You may make it fit with the other party housing, without assembling a lever in a housing.

DESCRIPTION OF SYMBOLS 1 ... Connector 3 ... Terminal storage chamber 5 ... Connection part 7 ... Terminal 9 ... Locking protrusion 11 ... Locking lance 13 ... Engaging convex part 15 ... Protruding part 17 ... Insertion recessed part

Claims (2)

A terminal housing chamber; a terminal having a connection portion housed in the terminal housing chamber; and a latching lance having a latching projection for latching the terminal and provided in the terminal housing chamber so as to bendable. Connector,
The connecting portion of the terminal is provided with an engaging convex portion that engages the locking protrusion of the locking lance and the terminal in a direction away from the terminal accommodating chamber,
Between the locking protrusion and the engaging protrusion, a protrusion protruding toward the insertion / extraction direction of the terminal with respect to the terminal accommodating chamber, the locking protrusion and the engaging protrusion The connector is provided with an insertion recess into which the protrusion is inserted in a state where the projection is engaged. The connector according to claim 1,
The connector is characterized in that the engaging convex portion is arranged on one side of a direction orthogonal to a direction of insertion / extraction of the terminal with respect to the terminal accommodating chamber with respect to a center of the connection portion.

Images