JP2017183264A - connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of rotating a terminal surely and reliably, and locking the terminal reliably to a locking lance.SOLUTION: In a connector 1 including a terminal housing chamber 3, a terminal 9 having a cylindrical connection 7 inserted from the insertion opening 5 of the terminal housing chamber 3, and a locking lance 11 provided flexibly in the terminal housing chamber 3 and locking the cylindrical connection 7 of the terminal 9, the terminal 9 is provided with a pair of locking protrusions 13, 13 engageable with the locking lances 11, respectively, at point symmetric positions with respect to the center of the cylindrical connection 7. In the terminal housing chamber 3, a pair of guide-rails 15, 17 inclining from the insertion opening 5 side toward locking lance 11 side are provided line symmetrically on the opposite sides of a center line passing the center of the insertion opening 5 and locking lance 11.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a connector. In detail, it is related with the connector provided with the terminal storage chamber in which the terminal which has a cylindrical connection part is inserted.

  Conventionally, as a connector, a terminal housing chamber, a terminal having a cylindrical connection portion inserted into the terminal housing chamber from an insertion opening thereof, and a cylindrical terminal of a terminal provided in a spacer inserted into the terminal housing chamber What is provided with the engaging convex part which latched the connection part is known (for example, refer patent document 1).

  In this connector, the terminal is provided with an engagement concave portion that is engaged with the engagement convex portion of the spacer, and a rotation direction posture control unit that is pressed against the lance of the spacer.

  In such a connector, when the spacer is inserted into the terminal receiving chamber from the temporary locking position to the final locking position, the lance of the spacer presses the rotation direction posture control unit of the terminal, and the engaging convex portion and the engaging concave portion Rotate the terminal to the position where it properly engages.

JP 2011-228143 A

  By the way, in the connector like the above-mentioned patent document 1, although the terminal is rotated by inserting the spacer into the terminal accommodating chamber, with the miniaturization of the connector and the multipolarization of the terminal, a plurality of small spacers are used. It has been difficult to obtain a rotational force that simultaneously rotates the terminal to the normal position.

  In addition, in a miniaturized connector, if the insertion force of the spacer is excessively increased to obtain the rotational force that rotates the terminal to the normal position, the rotational direction and posture control of the terminal pressed against the spacer lance There was a risk of deformation in the part.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a connector capable of reliably rotating a terminal without difficulty and securely locking the terminal to a locking lance.

  The invention according to claim 1 is a terminal housing chamber, a terminal having a cylindrical connecting portion inserted into the terminal housing chamber from an insertion opening thereof, and a cylinder of the terminal provided in the terminal housing chamber so as to be deflectable. The connector includes a locking lance that locks the connection portion in a shape, and the terminal engages with the locking lance at a point-symmetrical position with respect to the center of the cylindrical connection portion. A pair of possible locking projections are provided, and the terminal receiving chamber is provided symmetrically on both sides of a center line passing through the center of the insertion opening and the locking lance, and the locking is provided from the insertion opening side. A pair of guide rails that are inclined toward the lance side are provided.

  In this connector, the terminal receiving chamber is provided with a pair of guide rails which are provided symmetrically on both sides of the center line passing through the center of the insertion opening and the locking lance and are inclined from the insertion opening side toward the locking lance side. Thus, at the time of inserting the terminal into the terminal accommodating chamber, at least one of the guide rails comes into contact with the locking projection of the terminal.

  While the terminal is inserted from this state to the normal position of the terminal accommodating chamber, the terminal is inserted while rotating the terminal along the inclination of the guide rail due to the sliding of the locking protrusion and the guide rail. Thus, the locking projection can be securely locked to the locking lance.

  Therefore, in such a connector, the locking protrusion and the guide rail can be reliably brought into contact with each other, and the terminal can be rotated by sliding the locking protrusion and the guide rail by the insertion force of the terminal into the terminal accommodating chamber. Therefore, the terminal can be reliably rotated without difficulty and the terminal can be securely locked to the locking lance.

  The invention according to claim 2 is the connector according to claim 1, wherein the pair of guide rails are provided symmetrically on both sides of an intersecting line orthogonal to the center line, Pickup portions are provided in which ends of the insertion openings located on both sides of the intersection line intersect on the intersection line.

  In this connector, the pair of guide rails are provided symmetrically on both sides of the intersecting line orthogonal to the center line, so that the pair of locking projections and the pair of guide rails can contact each other, Furthermore, the terminal can be rotated stably.

  In addition, the guide rail is provided with a pick-up portion where the end portions of the respective insertion openings located on both sides of the crossing line intersect on the crossing line, so that the locking protrusion is reliably guided to the guide rail by the pick-up part. Can do.

  A third aspect of the present invention is the connector according to the second aspect, wherein the pair of guide rails are disposed in the terminal accommodating chamber from the pickup portion toward the locking lance with respect to the center of the insertion opening. It is inclined so as to narrow.

  In this connector, the pair of guide rails are inclined with respect to the center of the insertion opening so as to narrow the terminal receiving chamber from the pick-up portion toward the locking lance, so that the center of the cylindrical connection portion and the insertion opening Even if the position of the terminal is shifted and the terminal is accommodated in the terminal accommodating chamber, the terminal is inserted into the terminal accommodating chamber so that the center of the cylindrical connecting portion and the center of the insertion opening are aligned by the pair of guide rails. The posture can be corrected.

  According to a fourth aspect of the invention, there is provided the connector according to the second or third aspect, wherein the terminal receiving chamber is configured to lock the terminal at a point-symmetrical position with respect to the center of the locking lance and the insertion opening. Guide grooves that can be engaged with the protrusions are provided, and the pair of guide rails are respectively provided continuously to the guide grooves.

  In this connector, since the pair of guide rails are respectively provided continuously to the guide grooves, the engaging protrusions are continuously and smoothly guided from the guide rails to the guide grooves by the insertion operation of the terminals into the terminal accommodating chamber. be able to.

  Invention of Claim 5 is a connector of any one of Claim 2 thru | or 4, Comprising: The said pick-up part of a pair of said guide rail is a position with respect to the insertion direction to the said terminal accommodating chamber of the said terminal. Are arranged differently.

  In this connector, the pick-up portions of the pair of guide rails are arranged at different positions with respect to the insertion direction of the terminals into the terminal accommodating chamber. , And the other pick-up part and the locking projection do not come into contact with each other, and it is possible to prevent the pair of locking protrusions from coming into contact with both pick-up parts at the same time and prevent the terminal from being prevented from rotating.

  A sixth aspect of the present invention is the connector according to any one of the first to fifth aspects, wherein the terminal accommodating chamber receives the terminal from a position where the terminal is locked to the locking lance. It is characterized in that a restricting portion for restricting movement in the insertion direction into the chamber is provided.

  In this connector, since the terminal accommodating chamber is provided with a restricting portion that restricts the movement in the insertion direction from the position locked to the terminal locking lance to the terminal accommodating chamber, the terminal protrudes from the terminal accommodating chamber. The terminal can be held at the normal position of the terminal accommodating chamber.

  Invention of Claim 7 is a connector of any one of Claims 1 thru | or 6, Comprising: The said terminal is provided in the terminal part of the electric wire pulled out from the said insertion opening of the said terminal storage chamber, The said The insertion opening side of the terminal accommodating chamber is formed wider than the length between the pair of locking projections of the terminal.

  In this connector, since the insertion opening side of the terminal accommodating chamber is formed wider than the length between the pair of locking projections of the terminal, the terminal is accommodated even when the terminal is provided at the terminal portion of the thick electric wire. And the electric wire can be pulled out from the insertion opening.

  According to the present invention, there is an effect that it is possible to provide a connector that can reliably rotate the terminal without difficulty and can reliably lock the terminal to the locking lance.

It is a perspective view of the housing of the connector concerning an embodiment of the invention. It is a disassembled perspective view of the connector which concerns on embodiment of this invention. It is sectional drawing of the connector which concerns on embodiment of this invention. It is a side view of the terminal of a connector and an electric wire concerning an embodiment of the invention. It is a front view of the terminal accommodating chamber of the connector which concerns on embodiment of this invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is a perspective view when a terminal is rotated and inserted from the regular position in the terminal accommodating chamber of the connector concerning an embodiment of the invention. It is a front view of FIG.

  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 is bent into the terminal accommodating chamber 3, a terminal 9 having a cylindrical connecting portion 7 inserted into the terminal accommodating chamber 3 from the insertion opening 5, and the terminal accommodating chamber 3. A locking lance 11 that locks the cylindrical connecting portion 7 of the terminal 9 is provided.

  Further, the terminal 9 is provided with a pair of locking projections 13 and 13 that can be engaged with the locking lance 11 at positions symmetrical with respect to the center of the cylindrical connecting portion 7.

  The terminal accommodating chamber 3 is provided symmetrically on both sides of the center line L1 passing through the center of the insertion opening 5 and the locking lance 11, and is inclined toward the locking lance 11 from the insertion opening 5 side. Guide rails 15 and 17 are provided.

  Further, the pair of guide rails 15 and 17 are provided symmetrically on both sides of the intersection line L2 orthogonal to the center line L1, and the guide rails 15 and 17 have respective insertion openings 5 located on both sides of the intersection line. A pick-up portion 19 is provided at which the end on the side intersects on the intersection line L2.

  The pair of guide rails 15 and 17 are inclined with respect to the center of the insertion opening 5 so as to narrow the inside of the terminal accommodating chamber 3 from the pick-up portions 19 and 19 toward the locking lance 11.

  Further, the terminal accommodating chamber 3 is provided with a guide groove 21 that can be engaged with the locking projection 13 of the terminal 9 at a point-symmetrical position with respect to the center of the locking lance 11 and the insertion opening 5, and a pair of guide rails. 15 and 17 are respectively provided in the guide groove 21 continuously.

  Further, the pick-up portions 19 and 19 of the pair of guide rails 15 and 17 are arranged at different positions with respect to the insertion direction of the terminal 9 into the terminal accommodating chamber 3.

  Further, the terminal accommodating chamber 3 is provided with a restricting portion 23 that restricts the movement of the terminal 9 in the inserting direction from the position locked by the locking lance 11 of the terminal 9.

  Further, the terminal 9 is provided at a terminal portion of the electric wire 25 drawn from the insertion opening 5 of the terminal accommodating chamber 3, and the insertion opening 5 side of the terminal accommodating chamber 3 is between the pair of locking projections 13, 13 of the terminal 9. It is formed wider than the length.

  As shown in FIGS. 1 to 12, the connector 1 has a housing 27 made of an insulating material such as synthetic resin, and the housing 27 is provided with a plurality of terminal accommodating chambers 3.

  The terminal accommodating chamber 3 has a male counterpart terminal connected to the terminal 9 accommodated in the terminal opening 3 having one end side in the length direction inserted into the terminal 9 and the other end side in the length direction accommodated therein. It is an opening into which a tab-like connecting portion (not shown) is inserted.

  The insertion opening 5 of the terminal accommodating chamber 3 has an electric wire 25 with a terminal 9 provided at the terminal portion drawn out to the outside, and the insertion opening 5 side of the terminal accommodating chamber 3 has a pair of locking projections of the terminal 9 described later. It is formed wider than the length between 13 and 13.

  By forming the insertion opening 5 side of the terminal accommodating chamber 3 in this way, even if the terminal 9 is connected to the terminal portion of the thick electric wire 25 as shown by the phantom line in FIG. Can be accommodated in the terminal accommodating chamber 3, and the thick electric wire 25 can be pulled out from the insertion opening 5.

  The housing 27 provided with a plurality of such terminal accommodating chambers 3 can be fitted with a mating housing (not shown) that accommodates the mating terminal, and is fitted into the mating housing to fit inside the terminal accommodating chamber 3. The accommodated terminal 9 and the mating terminal are electrically connected.

  The terminal 9 is formed of a single member in which the wire crimping portion 29 and the connecting portion 7 are continuous by subjecting a single plate made of a conductive material to punching or bending.

  The electric wire crimping portion 29 includes a covering crimping portion 31 and a core wire crimping portion 33.

  The covering crimping portion 31 is composed of a pair of crimping pieces, and crimps the covering portion of the electric wire 25 at the terminal portion of the electric wire 25 connected to a power source or equipment.

  The terminal 9 is fixed to the electric wire 25 by crimping the covering crimp portion 31 to the covering portion of the electric wire 25.

  The core wire crimping portion 33 is composed of a pair of crimping pieces provided between the connection portion 7 and the covering crimping portion 31, and caulking the core wire portion exposed from the covering portion of the electric wire 25 at the terminal portion of the electric wire 25. Crimped.

  By crimping the core wire crimping portion 33 to the core wire portion of the electric wire 25, the terminal 9 is electrically connected to the electric wire 25.

  The connecting portion 7 is formed of a single member whose bottom wall is continuous with the electric wire crimping portion 29, and is formed into a cylindrical shape by bending both side walls rising from the bottom wall and bending each end to form an upper wall. It consists of a female connection part.

  The connecting portion 7 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 7.

  Further, auxiliary contact portions 39, 39 for sandwiching the tab-shaped connection portion of the mating terminal with the contact portion 35 of the elastic piece 37 are provided on the wall portion facing the elastic piece 37.

  Such a connection portion 7 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 and the auxiliary portion are assisted by the urging force of the elastic piece 37. When the contact portions 39 and 39 are in contact with the tab-shaped connecting portion, the terminal 9 and the counterpart terminal are electrically connected.

  On the other hand, on the outer periphery of the connecting portion 7, a pair of locking projections 13, 13 that can be engaged with the locking lance 11 are provided at point-symmetric positions with respect to the center of the cylindrical connecting portion 7. It protrudes outward from the outer periphery of the.

  The terminal 9 having such a cylindrical connecting portion 7 is inserted into the terminal accommodating chamber 3 from the insertion opening 5 of the terminal accommodating chamber 3 and is connected to a locking lance 11 provided in the terminal accommodating chamber 3 with a pair of engagements. By locking either one of the stop protrusions 13, 13 is prevented from coming off from the terminal accommodating chamber 3.

  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. The terminal housing chamber 3 is provided so as to be able to bend in the vertical direction.

  An engaging portion 41 is provided on the free end side of the locking lance 11, and one of the pair of locking projections 13, 13 of the terminal 9 accommodated in the terminal accommodating chamber 3 and the engaging portion 41. The terminal 9 is locked in the terminal accommodating chamber 3 by engaging.

  On the other hand, a guide groove 21 that can be engaged with the pair of locking projections 13 and 13 of the terminal 9 is provided in a portion that is point-symmetrical with respect to the center of the locking lance 11 and the insertion opening 5 of the terminal accommodating chamber 3. It has been.

  The guide groove 21 is provided along the length direction of the terminal accommodating chamber 3 beyond the engaging portion 41 from the side of the insertion opening 5 with respect to the engaging lance 11 of the locking lance 11, and the terminal 9 is connected to the terminal accommodating chamber. 3 is engaged with the other not engaged with the locking lance 11 of the pair of locking projections 13, 13 of the terminal 9.

  Thus, by engaging the guide groove 21 with the other of the pair of locking projections 13, 13, one of the pair of locking projections 13, 13 can be guided to the engaging portion 41 of the locking lance 11. The locking projections 13 and 13 and the locking lance 11 can be reliably engaged.

  Here, the opening into which the tab-shaped connecting portion of the terminal accommodating chamber 3 is inserted is formed in the front holder 43 assembled to the housing 27.

  The front holder 43 is provided with a restricting portion 45 that is inserted into a space located below the locking lance 11.

  When the terminal 9 is inserted into the terminal accommodating chamber 3, the restricting portion 45 is not inserted into the space located below the locking lance 11 because the front holder 43 is temporarily locked to the housing 27. The locking lance 11 can be bent and the locking lance 11 can lock the terminal 9.

  On the other hand, after accommodating the terminal 9 in the terminal accommodating chamber 3, the restricting portion 45 is inserted into the space located below the locking lance 11 by bringing the front holder 43 into the main locking state with respect to the housing 27. Thus, the locking lance 11 is prevented from being bent and the locking of the terminal 9 by the locking lance 11 is prevented from being released.

  In such a connector 1, since the connection portion 7 of the terminal 9 is formed in a cylindrical shape, simply inserting the terminal 9 into the terminal accommodating chamber 3 can be engaged with the pair of locking projections 13, 13 of the terminal 9. In many cases, the position of the locking lance 11 is not aligned, and there is a possibility that the pair of locking protrusions 13 and 13 and the engaging portion 41 of the locking lance 11 cannot be engaged.

  For this reason, the terminal 9 is rotated in the terminal accommodating chamber 3 so that the positions of the pair of locking projections 13 and 13 and the locking lance 11 are aligned, and the terminal 9 is engaged with either one of the pair of locking projections 13 or 13. It is necessary to securely engage the engaging portion 41 of the stop lance 11.

  Therefore, the terminal accommodating chamber 3 is provided with a pair of guide rails 15 and 17.

  The pair of guide rails 15 and 17 are provided so as to be symmetrical with respect to the both sides of the center line L1 with respect to the center line L1 passing through the center of the insertion opening 5 and the locking lance 11.

  Each of the pair of guide rails 15 and 17 has a lance side guide portion 47, a groove side guide portion 49, and a pickup portion 19.

  One end side of the lance side guide portion 47 is positioned on the crossing line L2 orthogonal to the center line L1 of the insertion opening 5 on the insertion opening 5 side, and the other end side is positioned on the locking lance 11 and is locked from the insertion opening 5 side. It is inclined toward the lance 11 side.

  When the terminal 9 is inserted into the terminal accommodating chamber 3, the end side on the insertion opening 5 side of the lance side guide portion 47 comes into contact with one of the pair of locking projections 13 and 13 of the terminal 9.

  When the terminal 9 is further inserted into the terminal accommodating chamber 3 from this state, one of the locking projections 13 is rotated along the inclination of the lance side guide portion 47 and the terminal 9 is rotated to engage the one locking projection 13. Guided to the stop lance 11, one of the locking projections 13 can be reliably engaged with the engaging portion 41 of the locking lance 11.

  Since such lance side guide portions 47 are provided on the pair of guide rails 15 and 17 so as to be symmetrical with respect to the center line L1, when the terminal 9 is inserted into the terminal accommodating chamber 3, which terminal 9 Even in such a posture, any one of the pair of locking projections 13 and 13 can be brought into contact with either one of the lance side guide portions 47 and 47 of the pair of guide rails 15 and 17 without fail.

  For this reason, the terminal 9 can be reliably rotated by the lance side guide portions 47, 47 of the pair of guide rails 15, 17, and either one of the pair of locking projections 13, 13 can be reliably locked to the locking lance 11. It can be made to engage with the engaging part 41.

  The groove side guide portion 49 is provided so as to be symmetrical with the lance side guide portion 47 on the opposite side of the lance side guide portion 47 of the intersection line L2 with respect to the intersection line L2 orthogonal to the center line L1.

  The groove side guide portion 49 has one end side positioned on the crossing line L2 orthogonal to the center line L1 of the insertion opening 5 on the insertion opening 5 side, and the other end side positioned on the guide groove 21. It is inclined toward the 21 side.

  When the terminal 9 is inserted into the terminal accommodating chamber 3, the groove-side guide portion 49 has an end portion on the insertion opening 5 side that is in contact with the lance-side guide portion 47 of the pair of locking projections 13 and 13. Abuts the other side that is not in contact.

  When the terminal 9 is further inserted into the terminal accommodating chamber 3 from this state, the terminal 9 is rotated while the other locking projection 13 slides along the inclination of the groove-side guide portion 49, and the other locking projection 13 is guided. The other locking projection 13 can be reliably engaged with the guide groove 21 by being guided to the groove 21.

  At this time, the one locking projection 13 rotates the terminal 9 while sliding along the inclination of the lance side guide portion 47, so that the lance side guide portion 47, the groove side guide portion 49, and the pair of locking projections 13. , 13 can obtain a large rotational force of the terminal 9, and the terminal 9 can be reliably rotated in the terminal accommodating chamber 3.

  Such groove-side guide portions 49 are provided on the pair of guide rails 15 and 17 so as to be symmetrical with respect to the center line L1, so that when the terminal 9 is inserted into the terminal accommodating chamber 3, which terminal 9 Even in such a posture, the other of the pair of locking projections 13 and 13 can always be brought into contact with one of the groove side guide portions 49 and 49 of the pair of guide rails 15 and 17.

  Therefore, the terminal 9 can be reliably rotated by the groove-side guide portions 49 and 49 of the pair of guide rails 15 and 17, and the other of the pair of locking projections 13 and 13 can be reliably engaged with the guide groove 21. Can be made.

  Here, the guide groove 21 side of the groove side guide portion 49 is formed of a single member that is continuous with the wall portion constituting the guide groove 21.

  Thus, by providing the groove side guide portion 49 and the guide groove 21 continuously, the terminal 9 is moved while rotating by sliding between the other of the pair of locking projections 13 and 13 and the groove side guide portion 49. To the linear movement of the terminal 9 by the engagement of the other of the pair of locking projections 13 and 13 with the guide groove 21 can be continuously and smoothly shifted.

  In this way, the pair of guide rails 15 and 17 are constituted by the lance side guide portion 47 and the groove side guide portion 49, so that the pair of locking projections 13 and 13 coincide with the locking lance 11 and the guide groove 21. The pair of guide rails 15 and 17 and the pair of locking projections 13 and 13 can be brought into contact with each other at any position in the circumferential direction of the insertion opening 5 except for the case where the insertion opening 5 is located. 9 can be rotated.

  Moreover, the rotation of the terminal 9 in the terminal accommodating chamber 3 can be obtained by sliding between the pair of guide rails 15 and 17 and the pair of locking projections 13 and 13 when the terminal 9 is inserted into the terminal accommodating chamber 3. Therefore, a large insertion force is not required, a large load is not applied to the pair of locking projections 13 and 13, and the deformation of the terminal 9 can be prevented.

  The pick-up portion 19 is a portion where the end portions of the lance side guide portion 47 and the groove side guide portion 49 on the insertion opening 5 side intersect on an intersecting line L2 orthogonal to the center line L1.

  Thus, by providing the pair of guide rails 15 and 17 with the pick-up portions 19 and 19, when the terminal 9 is inserted into the terminal accommodating chamber 3, the pair of locking protrusions 13 and 13 of the terminal 9 are picked up. 19 can be led to the lance side guide part 47 and the groove side guide part 49, and the terminal 9 can be rotated stably.

  Here, when the pick-up portions 19 and 19 of the pair of guide rails 15 and 17 are located at the same position in the insertion direction of the terminal 9 into the terminal accommodating chamber 3, the pair of locking projections 13 and 13 of the terminal 9. When the terminal 9 is inserted into the terminal accommodating chamber 3 in a state where is located on the intersection line L2, the pair of locking projections 13 and 13 and the pick-up portions 19 and 19 come into contact with each other at the same time, and the terminal 9 rotates. There is a fear that it cannot be done.

  Therefore, the pick-up portions 19 and 19 of the pair of guide rails 15 and 17 are arranged so that the positions of the terminals 9 in the insertion direction into the terminal accommodating chamber 3 are different. Specifically, the pick-up portion 19 of the guide rail 15 is located closer to the insertion opening 5 than the pick-up portion 19 of the guide rail 17.

  By arranging the pick-up portions 19 and 19 of the pair of guide rails 15 and 17 in this way, when the terminal 9 is inserted into the terminal accommodating chamber 3, first, the pick-up portion 19 of the guide rail 15 and the pair of locking projections Any one of 13 and 13 contact | abuts and the terminal 9 starts rotation.

  For this reason, when the other of the pair of locking projections 13, 13 reaches the pickup portion 19 of the guide rail 17, the terminal 9 is rotating, so that the pickup portion 19 of the guide rail 17 and the pair of locking projections 13, The other of 13 does not contact | abut, and the rotation of the terminal 9 is not prevented.

  Here, the pair of guide rails 15 and 17 including the lance side guide portion 47 and the groove side guide portion 49 and having the pick-up portion 19 are engaged with the locking lance 11 from the pick-up portions 19 and 19 with respect to the center of the insertion opening 5. It inclines so that the inside of the terminal storage chamber 3 may narrow toward the side.

  That is, the lance side guide portion 47 and the groove side guide portion 49 constituting the pair of guide rails 15 and 17 lock the inner diameter of the terminal accommodating chamber 5 from the insertion opening 5 side with the center of the insertion opening 5 as a fixed point. It is inclined so as to gradually become smaller toward the lance 11 and the guide groove 21 side.

  By tilting the pair of guide rails 15 and 17 in this way, the terminal 9 is inserted into the terminal accommodating chamber 3 so that the center of the cylindrical connecting portion 7 of the terminal 9 is shifted from the center of the insertion opening 5. In this case, the terminal 9 slides with the pair of guide rails 15, 17, whereby the terminal 9 is inserted into the terminal accommodating chamber 3 so that the center of the connection portion 7 is aligned with the center of the insertion opening 5.

  For this reason, at a position where the terminal 9 is completely inserted into the terminal accommodating chamber 3, that is, at a position where the terminal 9 is latched by the latching lance 11, the terminal 9 is tilted and accommodated in the terminal accommodating chamber 3. Therefore, the terminal 9 and the mating terminal can be stably connected.

  Here, the end portion of the guide groove 21 of the terminal accommodating chamber 3 is made of a wall portion that closes the end portion of the guide groove 21, and the terminal 9 is moved from the position locked to the locking lance 11 to the terminal accommodating chamber 3. A restricting portion 23 for restricting movement in the insertion direction is provided.

  By providing the restricting portion 23 in the terminal accommodating chamber 3 in this manner, even if the terminal 9 is excessively inserted into the terminal accommodating chamber 3, the other of the pair of locking projections 13 and 13 and the restricting portion 23 are brought into contact with each other. The terminal 9 can be prevented from protruding from the terminal accommodating chamber 3, and the terminal 9 can be disposed at a normal position of the terminal accommodating chamber 3.

  A lance side regulating portion 51 formed in a step shape is also provided on the side of the locking lance 11 facing the regulating portion 23, and this lance side regulating portion 51 is connected to one of the pair of locking projections 13, 13. The terminal 9 is positioned so as to be in contact with the terminal 9 and prevents the terminal 9 from protruding from the terminal accommodating chamber 3.

  In such a connector 1, the terminal accommodating chamber 3 is provided symmetrically on both sides of the center line L1 passing through the center of the insertion opening 5 and the locking lance 11, and is directed from the insertion opening 5 side toward the locking lance 11 side. Since the pair of guide rails 15 and 17 which are inclined in this manner are provided, at least one of the guide rails 15 and 17 contacts the locking projection 13 of the terminal 9 when the terminal 9 is inserted into the terminal accommodating chamber 3.

  While the terminal 9 is inserted from this state to the normal position of the terminal accommodating chamber 3, the terminal 9 is rotated along the inclination of the guide rails 15, 17 due to the sliding of the locking projection 13 and the guide rails 15, 17. The locking projection 13 is inserted into the locking lance 11, and the locking projection 13 can be securely locked to the locking lance 11.

  Therefore, in such a connector 1, the locking protrusion 13 and the guide rails 15, 17 can be reliably brought into contact with each other, and the locking protrusion 13 and the guide rails 15, 17 can be connected by the insertion force of the terminal 9 into the terminal accommodating chamber 3. Since the terminal 9 can be rotated by sliding the terminal 9, the terminal 9 can be reliably rotated without difficulty and the terminal 9 can be reliably locked to the locking lance 11.

  In addition, since the pair of guide rails 15 and 17 are provided symmetrically on both sides of the intersection line L2 orthogonal to the center line L1, the pair of locking projections 13 and 13 and the pair of guide rails 15 and 17 Can be brought into contact with each other, and the terminal 9 can be rotated more stably.

  Further, the guide rails 15 and 17 are provided with pick-up portions 19 where the end portions of the respective insertion openings 5 located on both sides of the cross line L2 intersect on the cross line L2, so that the guide rails 15 and 17 are locked by the pick-up portion 19. The protrusion 13 can be reliably guided to the guide rails 15 and 17.

  Further, the pair of guide rails 15 and 17 are inclined with respect to the center of the insertion opening 5 so as to narrow the inside of the terminal accommodating chamber 3 from the pick-up portions 19 and 19 toward the locking lance 11. Even if the positions of the center of the connecting portion 7 and the center of the insertion opening 5 are shifted and the terminal 9 is accommodated in the terminal accommodating chamber 3, the pair of guide rails 15 and 17 allow the center of the cylindrical connecting portion 7 and the insertion opening to be The insertion posture of the terminal 9 with respect to the terminal accommodating chamber 3 can be corrected so as to match the position with the center of 5.

  Further, since the pair of guide rails 15 and 17 are respectively provided continuously to the guide groove 21, the locking protrusion 13 is guided from the guide rails 15 and 17 by the insertion operation of the terminal 9 into the terminal accommodating chamber 3. The groove 21 can be continuously and smoothly guided.

  Further, since the pick-up portions 19 and 19 of the pair of guide rails 15 and 17 are arranged at different positions with respect to the insertion direction of the terminal 9 into the terminal accommodating chamber 3, at the time of starting insertion of the terminal 9, The pick-up portion 19 and the locking projection 13 are in contact with each other, and the other pick-up portion 19 and the locking projection 13 are not in contact with each other, so that the pair of locking projections 13 and 13 touch both pick-up portions 19 and 19 simultaneously. It is possible to prevent the rotation of the terminal 9 from being prevented.

  Further, since the terminal accommodating chamber 3 is provided with a restricting portion 23 for restricting movement in the insertion direction to the terminal accommodating chamber 3 from the position where the terminal 9 is engaged with the engaging lance 11, the terminal 9 is connected to the terminal 9. The terminal 9 can be held in the normal position of the terminal accommodating chamber 3 without protruding from the accommodating chamber 3.

  Furthermore, since the insertion opening 5 side of the terminal accommodating chamber 3 is formed wider than the length between the pair of locking projections 13, 13 of the terminal 9, the terminal 9 is provided at the terminal portion of the thick electric wire 25. However, the terminal 9 can be accommodated in the terminal accommodating chamber 3 and the thick electric wire 25 can be pulled out from the insertion opening 5.

  In the connector according to the present embodiment, the front holder is assembled to the housing and the opening into which the mating terminal of the terminal accommodating chamber is inserted is not limited to this, but the front holder is not assembled to the housing. In addition, an opening into which the mating terminal is inserted may be formed in the terminal accommodating chamber.

  Further, the restricting portion is provided in the guide groove. However, the present invention is not limited to this. For example, the restricting portion is provided at a position where it can come into contact with the end surface of the terminal connecting portion. As long as the position can be prevented, the restricting portion may be provided in any part of the terminal accommodating chamber.

DESCRIPTION OF SYMBOLS 1 ... Connector 3 ... Terminal accommodation chamber 5 ... Insertion opening 7 ... Connection part 9 ... Terminal 11 ... Locking lance 13 ... Locking protrusion L1 ... Center line 15, 17 ... Guide rail L2 ... Crossing line 19 ... Pick-up part 21 ... Guide Groove 23 ... Regulator 25 ... Electric wire

Claims (7)

A terminal housing chamber, a terminal having a cylindrical connection portion inserted inside from the insertion opening of the terminal storage chamber, and a cylindrical connection portion of the terminal provided to be flexibly provided in the terminal storage chamber A connector with a locking lance,
The terminal is provided with a pair of locking protrusions that can be engaged with the locking lances at point-symmetrical positions with respect to the center of the cylindrical connecting portion,
A pair of guide rails that are provided symmetrically on both sides of a center line that passes through the center of the insertion opening and the locking lance, and incline from the insertion opening side toward the locking lance side. The connector characterized by being provided. The connector according to claim 1,
The pair of guide rails are provided symmetrically on both sides of an intersecting line orthogonal to the center line,
The guide rail is provided with a pick-up portion where ends of the insertion openings located on both sides of the intersecting line intersect on the intersecting line. The connector according to claim 2,
The pair of guide rails are inclined with respect to the center of the insertion opening so as to narrow the terminal accommodating chamber from the pick-up portion toward the locking lance. The connector according to claim 2 or 3,
The terminal receiving chamber is provided with a guide groove that can be engaged with the locking projection of the terminal at a point-symmetrical position with respect to the center of the locking lance and the insertion opening,
The pair of guide rails are respectively provided continuously with the guide grooves. The connector according to any one of claims 2 to 4,
The connector, wherein the pick-up portions of the pair of guide rails are arranged at different positions with respect to the insertion direction of the terminals into the terminal accommodating chamber. The connector according to any one of claims 1 to 5,
The connector characterized in that the terminal accommodating chamber is provided with a restricting portion for restricting movement of the terminal in the insertion direction from the position locked by the locking lance. The connector according to any one of claims 1 to 6,
The terminal is provided at a terminal portion of an electric wire drawn from the insertion opening of the terminal accommodating chamber,
The connector is characterized in that the insertion opening side of the terminal accommodating chamber is formed wider than the length between the pair of locking projections of the terminal.