JP2015095343A - Connector terminal locking structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector terminal locking structure capable of strengthening terminal locking force of a terminal (a terminal installed in a housing) that is applied by a lance.SOLUTION: A connector terminal locking structure 1 includes a housing 5 in which a cavity 11 (11A, 11B) is provided, a terminal 7 (7A, 7B) installed in the housing 5 by being inserted in the cavity 11 of the housing 5, a lance 13 (13A, 13B) provided in the housing 5 for preventing the terminal 7 from coming off by being engaged with the terminal 7 installed in the housing 5, a locked part 15 provided in the lance 13, and a locking part 17, and has a holder 9 for fixing the lance 13 by the locking part 17 engaged with the locked part 15, when the terminal 7 is installed in the housing 5 with the terminal 7 prevented from coming off by the lance 13.

Description

  The present invention relates to a terminal locking structure of a connector, and more particularly, to a terminal installed in a housing for preventing the terminal from being detached using a lance.

  Conventionally, a connector (connector terminal locking structure) 301 as shown in FIG. 9 is known (see, for example, Patent Document 1).

  The connector 301 includes a housing 303, a retainer (front holder) 305, and a terminal fitting (terminal) 307.

  The connector 301 is configured so that the front holder 305 detects an intermediate insertion state of the terminal 307 to the housing 303 (a state at the temporary assembly position). When the terminal 307 is inserted halfway, the front holder 305 contacts the deformed lance 309 so that the front holder 305 cannot be moved to the full locking position. Accordingly, the halfway insertion state is detected.

  Further, in the connector 301, when the terminal 307 has been inserted into the cavity 311 of the housing 303, the front holder 305 can be pushed to the normal assembly position (main locking position).

  When the front holder 305 is pushed into the regular assembly position, the pressing slope 313 of the front holder 305 presses the guide slope 315 of the lance 309 downward. As a result, the lance 309 is forcibly pushed down to a position closer to the terminal fitting 307 (downward) than the free state, and the bending toward the bending space 317 (upward) is restricted.

  Then, the locking allowance of the terminal 307 (the engagement allowance between the terminal 307 installed in the housing 303 and the lance 309) is increased, and the terminal 307 is prevented from being detached by the lance 309.

JP 2003-346964 A

  By the way, in the conventional connector 301, since the locking allowance of the terminal 307 is increased, it is considered that even if the lance 309 is made small, the function of preventing the terminal 307 from being removed can be sufficiently secured.

  However, if the terminal 307 installed in the housing 303 is subjected to a large separation direction (the direction of removal), the lance 309 is bent due to insufficient strength of the lance 309 itself, and the lance 309 is bent toward the terminal 307 side. Thus, there is a problem that the terminal locking force (the force for preventing the terminal from being removed) may be reduced due to the deformation.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a terminal locking structure for a connector that can reinforce the terminal locking force of a terminal (terminal installed in a housing) by a lance. And

  The invention according to claim 1 is a housing provided with a cavity, a terminal installed in the housing by being inserted into the cavity of the housing, and a terminal provided in the housing and installed in the housing A lance that engages with the lance to prevent the terminal from coming off; a locked portion provided on the lance; and a locking portion; When the connector is installed in the housing in a state in which the terminal is mounted, the connector has a terminal locking structure in which the locking portion engages with the locked portion and fixes the lance.

  According to a second aspect of the present invention, in the connector terminal locking structure according to the first aspect, the locked portion is formed by a rib of the lance, and the rib enters the locking portion. It is a terminal locking structure of a connector formed by a groove.

  According to a third aspect of the present invention, in the connector terminal locking structure according to the first or second aspect, the locked portion is formed by a pair of ribs protruding from both ends in the width direction of the lance. The locking portion is a connector terminal locking structure formed by a pair of grooves into which each of the pair of ribs enters.

  According to a fourth aspect of the present invention, in the connector terminal locking structure according to any one of the first to third aspects, a plurality of the cavities and lances are provided, and the plurality of cavities are provided. Each of the plurality of lances is configured to prevent a terminal inserted and installed in each of the plurality of lances, and the plurality of lances are fixed by one holder. It is a terminal locking structure of a connector.

  Advantageous Effects of Invention According to the present invention, there is an effect that it is possible to provide a connector terminal locking structure that can enhance the terminal locking force of a terminal (terminal installed in a housing) by a lance.

It is a figure which shows schematic structure of the housing which comprises the terminal latching structure of the connector which concerns on embodiment of this invention, (b) is IB-IB sectional drawing in (a). It is a perspective view which shows schematic structure of the housing which comprises the terminal latching structure of the connector which concerns on embodiment of this invention. It is a figure which shows schematic structure of the holder which comprises the terminal latching structure of the connector which concerns on embodiment of this invention, (b) is the IIIB-IIIB sectional drawing in (a). It is a perspective view which shows schematic structure of the holder which comprises the terminal latching structure of the connector which concerns on embodiment of this invention. It is a perspective view which shows schematic structure of the terminal which comprises the terminal latching structure of the connector which concerns on embodiment of this invention. In the terminal locking structure of the connector which concerns on embodiment of this invention, it is a figure which shows the state which installed the holder temporarily in the housing, (b) is VIB-VIB sectional drawing in (a). In the terminal locking structure of the connector which concerns on embodiment of this invention, it is a figure which shows the state which temporarily installed the holder in the housing and installed the terminal, (b) is the VIIB-VIIB sectional drawing in (a). In the terminal locking structure of the connector which concerns on embodiment of this invention, it is a figure which shows the state which finished installing a terminal and a holder in a housing, (b) is a VIIIB-VIIIB sectional drawing in (a). It is a figure which shows the conventional connector.

  A connector terminal locking structure 1 according to an embodiment of the present invention is employed in a connector 3, and as shown in FIGS. 7 and 8, a housing 5, a terminal (for example, a female terminal) 7, and a holder (retainer). A front holder) 9.

  The housing 5 is provided with a cavity 11, and the terminal 7 is installed in the housing 5 by being inserted into and accommodated in the cavity 11 of the housing 5.

  Here, for convenience of explanation, the terminal 7 is inserted into the cavity 11 of the housing 5, and the direction in which the terminal 7 is extracted from the cavity 11 of the housing 5 is defined as the front-rear direction, and a predetermined orthogonal to the front-rear direction. One direction is a horizontal direction, and a direction perpendicular to the front-rear direction and the vertical direction is a vertical direction.

  The terminal 7 is inserted into the cavity 11 of the housing 5 and accommodated by moving the terminal 7 to the front side with respect to the housing 5 in a state where the housing 5 is located on the front side and the terminal 7 is located on the rear side. It is like that.

  The housing 5 is provided with a cantilever-shaped lance 13 extending in the front-rear direction. The lance 13 constitutes a part of the housing 5. The lance 13 is pushed by the terminal 7 in a state in which the terminal 7 is being installed in the housing 5 and is elastically deformed and bent to one side in the vertical direction, and is restored when the terminal 7 has been installed in the housing 5. It has become.

  The lance 13 is configured so that the lance 13 is engaged with the terminal 7 installed in the housing 5 to prevent the terminal 7 from coming off.

  The lance 13 is provided with a locked portion 15. The locked portion 15 constitutes a part of the lance 13 and the housing 5, and is provided at, for example, the front end portion of the cantilever-shaped lance 13.

  The holder 9 is provided with a locking portion 17. The locking portion 17 constitutes a part of the holder 9. When the holder 9 is installed in the housing 5 in a state where the terminal 7 is installed in the housing 5 and the terminal 7 is prevented from being removed by the lance 13, the locked portion 15 is locked to the locking portion 17. It is configured.

  That is, the locked portion 15 is configured to engage with the locking portion 17, and by this engagement, the lance 13 is integrated with the housing 5 (the main body portion of the housing excluding the lance 13). It is comprised so that it may be hold | maintained and fixed by. Since the lance 13 is fixed, the lance 13 is prevented from being deformed (deformation is prevented). For example, in the lance 13, when the terminal 7 is pushed by the terminal 7 in the state of being installed in the housing 5, the bending (the bending to one side in the vertical direction) and the bending in the opposite direction (the vertical direction) Bending to the other side) is prevented.

  In addition, when the housing 5 is located on the rear side and the holder 9 is located on the front side, the holder 9 is installed on the housing 5 by moving the holder 9 to the rear side with respect to the housing 5. ing.

  As shown in FIGS. 1 and 6, the locked portion 15 is formed of, for example, a rib (lance deformation regulating rib; a protrusion protruding from the lance 13) 19 of the lance 13. 3, 4, and 8, a groove (lance deformation restricting groove) 21 into which the rib 19 enters is formed.

  More specifically, the locked portion 15 is formed by a pair of ribs 19 (19A, 19B) protruding from both ends in the width direction (lateral direction) of the lance 13, and the locking portion 17 is a pair of ribs. Each of 19 (19A, 19B) is formed by a pair of grooves 21 (21A, 21B).

  Further, as shown in FIG. 1 and the like, a single housing 5 is provided with a plurality of cavities 11 and lances 13. The terminal 7 inserted and installed in each of the plurality of cavities 11 is configured to be prevented from coming off by each of the plurality of lances 13. Moreover, it is comprised so that the some lance 13 may be fixed by installing the one holder 9 in the one housing 5 (refer FIG. 7, FIG. 8, etc.).

  For example, the housing 5 is provided with two cavities, a first cavity 11 (11A) and a second cavity 11 (11B). Each cavity 11 (11A, 11B) is adjacent to each other.

  The first cavity 11A is provided with a first lance 13 (13A), and the second cavity 11B is provided with a second lance 13 (13B).

  The first terminal 11 (7A) is inserted and installed in the first cavity 11A, and the first terminal 7A thus installed is prevented from being detached by the first lance 13A. . A second terminal 7 (7B) is inserted and installed in the second cavity 11B, and the installed second terminal 7B is prevented from coming off by the second lance 13B. .

  Note that the insertion direction of the first terminal 7A into the first cavity 11A and the insertion direction of the second terminal 7B into the second cavity 11B coincide with each other. The first terminal 7A and the second terminal 7B have the same shape, and the first cavity 11A and the first lance 13A, and the second cavity 11B and the first lance 13B are mutually connected. It has the same shape. The positions of the first cavity 11A and the first lance 13A, the second cavity 11B and the first lance 13B coincide with each other in the front-rear direction and the longitudinal direction, and are slightly separated in the lateral direction.

  The first terminal 7A is inserted into the first cavity 11A and installed in the housing 5, and is prevented from being removed by the first lance 13A. The second terminal 7B is also inserted into the second cavity 11B and installed in the housing 5. The holder 9 is installed in the housing 5 in a state in which the second lance 13B prevents the lance 13B from being detached, and the lance 13 (13A, 13B) is fixed.

  That is, when the holder 9 is installed in the housing 5, the pair of ribs 19 (19A, 19B) of the first lance 13A enters the pair of grooves 21 (21A, 21B) of the holder 9, and the second lance 13B. When the pair of ribs 19 (19A, 19B) enter the pair of grooves 21 (21A, 21B) of the holder 9, the first lance 13A and the second lance 13B are fixed to the holder 9. ing. At this time, the holder 9 is integrated with the housing 5.

  As already understood, since two cavities 11 and two lances 13 are provided in one housing 5, four ribs 19 are provided in one housing 5. Four holders 9 are also provided with four grooves 21.

  Here, the connector terminal locking structure 1 will be described in more detail.

  As shown in FIG. 5 and the like, the terminal 7 is generated by forming a plate-like material made of a conductive material such as metal into a predetermined shape and appropriately bending the formed material.

  The terminal 7 includes a mating terminal connecting portion (cylindrical portion) 23 to which a mating terminal (for example, a male terminal) is connected, a wire barrel portion (core caulking portion) 25, and an insulation portion (sheath caulking portion) 27. It is configured. The mating terminal connecting portion 23, the wire barrel portion 25, and the insulation barrel portion 27 are arranged in this order from the front side to the rear side in the front-rear direction.

  The mating terminal connection portion 23 has a rectangular tube shape, and an elastic piece 29 is provided inside the rectangular tube. Further, a notch 33 with which a locking portion (see FIG. 1B) 31 of the lance 13 is engaged is provided in one of the four side wall portions of the mating terminal connection portion 23. .

  The wire barrel portion 25 is formed as a pair, and in the terminal-attached electric wire 35 in which the terminal 7 is installed at one end portion in the longitudinal direction, the wire barrel portion 25 removes the sheath of the exposed wire core wire. Surrounding. The insulation barrel portion 27 is also formed as a pair, and in the electric wire with terminal 35, the insulation barrel portion 27 covers almost the entire outer periphery of the sheath of the wire at a position slightly behind the front end of the sheath. ing. In the electric wire with terminal 35, the electric wire extends from the terminal 7 to the rear of the terminal 7. In addition, the display of an electric wire is abbreviate | omitted in FIGS.

  The housing 5 is integrally formed of, for example, an insulating material such as synthetic resin and is formed in a substantially rectangular parallelepiped shape. The cavity 11 is formed to be recessed from the rear end of the housing 5 to the front side. The front side portion of the cavity 11 is formed in a quadrangular prism shape that is substantially the same shape as the outer shape of the mating terminal connection portion 23 of the terminal 7.

  The two cavities 11 (11A, 11B) are partitioned by the partition wall 37, and are slightly separated from each other in the lateral direction as described above.

  As shown in FIG. 1 and the like, the lance 13 is provided at one side wall portion (a side wall portion located on one side in the vertical direction) of the cavity 11, and in the lateral direction, the center of the cavity 11 is provided. It is located in the middle part of the cavity 11 in the front-rear direction. The cantilever-shaped lance 13 has a beam distal end positioned on the front side and a beam proximal end positioned on the rear side.

  Further, the locking portion 31 described above is provided at the tip of the cantilevered lance 13. The locking portion 31 protrudes from the lance 13 to the other side (center side of the cavity 11) in the vertical direction. The locking portion 31 is formed with an inclined guide surface 39. When the terminal 7 is inserted into the cavity 11, the tip (front end) of the terminal 7 comes into contact with the guide surface 39, the lance 13 is bent to one side in the vertical direction (the side away from the center of the cavity 11), and the terminal 7 is It is smoothly inserted into the cavity 11.

  The rib 19 is formed in a small rectangular flat plate shape, for example. The rib 19A and the rib 19B are formed in the same shape. The lance 13 is composed of a lance main body portion 41 having a cantilever shape, a locking portion 31 and a rib 19. The rib 19A protrudes from one end surface of the lance body 41 in the lateral direction so that the thickness direction is the vertical direction and the width direction is the horizontal direction. The rib 19A is positioned at the other end (the end opposite to the protruding direction of the locking portion 31) in the vertical direction, and the front end (front end) of the lance main body 41 in the front-rear direction. Is located. However, the rear end of the rib 19 </ b> A is located behind the rear end of the locking portion 31.

  Further, an oblique guide surface 43 is provided at the front end (front end) of the rib 19A so that the rib 19A can smoothly enter the groove 21A of the holder 9. The guide surface 43 may be provided in the groove 21 instead of or in addition to the rib 19A.

  The rib 19B is provided symmetrically to the rib 19A with respect to the center plane of the lance body 41 (a plane perpendicular to the lateral direction and passing through the center of the lance body 41).

  A through hole 45 is formed between the front end of the cavity 11 (the bottom of the cavity 11) and the front end of the housing 5.

  The housing 5 is provided with a cylindrical recess 47. The recess 47 is formed to be recessed from the front end of the housing 5 to the rear side. By providing the concave portion 47, a convex portion 49 is formed in the housing 5, and the cavity 11 (11 </ b> A, 11 </ b> B) and the lance 13 (13 </ b> A, 13 </ b> B) are located inside the convex portion 49. . An elastic arm 51 is provided outside the cylindrical recess 47.

  When a mating connector (not shown) on which a terminal (for example, a male terminal) is installed is installed on the housing 5 (connector 3) on which the electric wire with terminal 35 is installed, the mating connector enters the recess 47 and is elastic. It is configured to engage with the arm 51 and prevent the mating connector from coming off from the connector 3.

  When the mating connector on which the terminal is installed is installed on the connector 3, the terminal of the mating connector passes through the through hole 45 of the housing 5 and enters the mating terminal connection portion 23 of the terminal 7. The terminal of the connector and the terminal 7 are connected.

  The partition wall 37 or the like is provided with a notch (concave portion) 53 into which the holder 9 enters to avoid interference with the holder 9 when the holder 9 is installed in the housing 5. The notch 53 is formed to be recessed from the front end of the housing 5 to the rear side.

  The holder 9 is also integrally formed of an insulating material such as synthetic resin, for example, and as shown in FIGS. 3 and 4, the holder main body 55, a pair of connecting portions 57 (57A, 57B), and a pair of outer sides. A portion 59 (59A, 59B) and a pair of locked portions 61 (61A, 61B) are provided.

  The holder main body 55 includes a central portion 63 and a pair of side portions 65 (65A, 65B). The central part 63 is formed in a rectangular plate shape, the thickness direction is the horizontal direction, the longitudinal direction is the front-rear direction, and the width direction is the vertical direction.

  One side portion 65 </ b> A is formed in a rectangular plate shape whose thickness is substantially equal to the central portion 63, whose length is shorter than that of the central portion 63, and whose width is narrower than that of the central portion 63. The side portion 65A protrudes from one lateral surface of the central portion 63 with the thickness direction being the horizontal direction, the longitudinal direction being the front-rear direction, and the width direction being the vertical direction. Further, the front end of the side portion 65A and the front end of the central portion 63 coincide with each other in the front-rear direction, and in the vertical direction, one end of the side portion 65A is slightly closer to the other end side than one end of the central portion 63. positioned. In the vertical direction, the position of one end of the side portion 65A and the position of one end of the central portion 63 may coincide with each other.

  The other side portion 65B is provided symmetrically with the one side portion 65A with respect to the center plane of the center portion 63 (a plane orthogonal to the lateral direction and passing through the center of the center portion 63). Thus, when viewed from the front-rear direction, the holder main body 55 has a “T” shape (“T” shape in which the top and bottom are inverted in FIGS. 3 and 4).

  One connecting portion 57A has a rectangular plate shape whose thickness is slightly larger than that of the side portion 65A, whose length is shorter than or equal to that of the side portion 65A, and whose width is narrower than that of the side portion 65A. Is formed. The connecting portion 57A protrudes from one side of the lateral portion 65A in the lateral direction, with the thickness direction being the horizontal direction, the longitudinal direction being the front-rear direction, and the width direction being the vertical direction. In addition, the rear end of the connecting portion 57A and the rear end of the side portion 65A coincide with each other in the front-rear direction, or the rear end of the connecting portion 57A is positioned slightly behind the rear end of the side portion 65A. In the vertical direction, one end of the connecting portion 57A and one end of the side portion 65A coincide with each other.

  The other connecting portion 57B is provided symmetrically with the one connecting portion 57A with respect to the central plane of the central portion 63 (a plane orthogonal to the lateral direction and passing through the center of the central portion 63).

  One outer portion 59A is formed in a quarter columnar shape (a columnar shape in which the shape of the bottom surface is a sector having a central angle of 90 °). The length of the outer part 59A (the height of the column) is approximately the same as the length of the side part 65A. The value of the radius of the outer portion 59A (fan-shaped radius) is larger than the value of the width of the connecting portion 57A.

  In the outer portion 59A, the length direction is the front-rear direction, one flat side surface 67 of the 1/4 cylinder is orthogonal to the lateral direction and is in contact with the connecting portion 57A, and the other one of the 1/4 cylinders. One planar side surface 69 projects from one end surface in the lateral direction of the connecting portion A such that the arc-shaped side surface 71 is positioned at the lateral end so as to be orthogonal to the longitudinal direction. Further, in the front-rear direction, the rear end of the outer portion 59A and the rear end of the side portion 65A coincide with each other, and the front end of the outer portion 59A and the front end of the holder main body portion 55 coincide with each other. Further, in the vertical direction, one end of the outer portion 59A and one end of the connecting portion 57A coincide with each other, and the other end of the outer portion 59A and the other end of the side portion 65A Each other is in agreement.

  The other outer portion 59B is provided symmetrically with one outer portion 59A with respect to the central plane of the central portion 63 (a plane orthogonal to the lateral direction and passing through the center of the central portion 63). Thus, when viewed from the front-rear direction, as in the case of the holder main body 55, the holder 9 is also in a “T” shape (“T” shape in which the top and bottom are inverted in FIGS. 3 and 4). .

  When the holder 9 is installed in the housing 5 in which the terminal 7A is installed, the groove 21 (21A, 21B) into which the rib 19 (19A, 19B) of the lance 13A enters is formed in the outer part 59A and the side part 65A. Is provided. Similarly, when the holder 9 is installed in the housing 5 in which the terminal 7B is installed, the groove 21 (21A, 21B) into which the rib 19 (19A, 19B) of the lance 13B enters is formed laterally with the outer portion 59B. It is provided in the part 65B. Further, the groove 21 (21A, 21B) provided in the side portion 65A (65B) and the outer portion 59A (59B) is open to the connecting portion 57 side, and the outer portion 59A (59B). The side portion 65A (65B) extends from the rear end toward the front side.

  When the holder 9 is installed in the housing 5 in which the terminal 7A is inserted into the cavity 11A, the lance 13A of the cavity 11A is positioned at the connecting portion 57A between the side portion 65A and the outer portion 59A ( A pair of ribs 19A and 19B projecting from the lance 13A in the vertical direction are inserted into the groove 21A of the outer portion 59A and 21B of the side portion 65A.

  Further, when the holder 9 is installed in the housing 5 in which the terminal 7B is inserted into the cavity 11B, the lance 13B of the cavity 11B is positioned at the connecting portion 57B between the side portion 65B and the outer portion 59B. However, the pair of ribs 19A and 19B protruding from the lance 13B (in the longitudinal direction overlaps with the connecting portion 57B) enter the groove 21A of the outer portion 59B and 21B of the side portion 65B.

  Thereby, the lance 13 (13A, 13B) is fixed by the holder 9, and the cantilever-shaped lance 13 is fixed so as not to bend in the vertical direction (vertical direction in FIG. 8B).

  Further, the distance between the outer portion 59A (59B) and the side portion 65A (65B) in the lateral direction is approximately the same as the lateral dimension of the lance body 41, and the terminal 7A (7B) When the holder 9 is installed in the housing 5 inserted and installed in the cavity 11A (11B), the lance body 41 is sandwiched between the outer part 59A (59B) and the side part 65A (65B), and cantilevered. The lance 13 is fixed so as not to bend in the lateral direction (the direction orthogonal to the paper surface of FIG. 8B).

  Further, the holder 9 is provided with a pair of locked portions (projections) 61 (61 </ b> A, 61 </ b> B). When the holder 9 is installed in the housing 5, the locked portion 61 is provided in the housing 5. The holder 9 is locked by a locking portion (not shown), and the holder 9 is prevented from coming off.

  Further, when the holder 9 is installed in the housing 5 installed by inserting the terminals 7A and 7B into the cavities 11A and 11B, the housing 5, the terminal 7 and the holder 9 are integrated. It is almost within the notch 53.

  Next, installation of the holder 9 and the terminal-attached electric wire 35 in the housing 5 will be described.

  As an initial state, it is assumed that the holder 9 is separated from the housing 5 in front of the housing 5, and the electric wire with terminal 35 is separated from the housing 5 behind the housing 5. At this time, in the electric wire with terminal 35, the mating terminal connecting portion 23 is on the front side, and the position of the cavity 11 and the position of the holder 9 and the electric wire with terminal 35 are equal to each other in the horizontal direction and the vertical direction. I'm doing it.

  In the initial state, the holder 9 is moved rearward with respect to the housing 5, and the holder 9 is temporarily installed in the housing 5 (see FIG. 6).

  Subsequently, when the electric wire with terminal 35 is moved forward with respect to the housing 5, the terminal 7 enters the cavity 11, the tip of the terminal 7 contacts the inclined surface (guide surface) 39 of the tip of the lance 13, and the lance 13 is lowered Elastically deforms and bends (one longitudinal end).

  When the electric wire with terminal 35 is moved further forward, the front end of the terminal 7 comes into contact with the bottom (front end surface) of the cavity 11, the lance 13 is restored, and the locking portion 31 of the lance 13 is cut off from the mating terminal connection portion 23. The notch 33 enters and the terminal-attached electric wire 35 is prevented from coming off (see FIG. 7).

  Subsequently, when the holder 9 in the temporarily installed state is further moved rearward with respect to the housing 5, the holder 9 is installed integrally with the housing 5, the rib 19 enters the groove 21, and the lance 13 is fixed by the holder 9. (See FIG. 8).

  In the above procedure, the holder 9 may be installed in the housing 5 after the installation of the terminal-attached electric wire 35 in the housing 5 without temporarily installing the holder 9 first.

  According to the terminal locking structure 1 of the connector, when the holder 9 is installed in the housing 5 in a state where the terminal 7 is installed in the housing 5 and the terminal 7 is prevented from being detached by the lance 13, the locking portion of the holder 9 is provided. Since 17 locks the locked portion 15 of the lance 13 to fix the lance 13, the cantilever-shaped lance 13 is not damaged even when a large force in the direction of disengagement is applied to the terminal 7 installed in the housing 5. I will not bend. Thereby, the terminal locking force of the terminal 7 (terminal 7 installed in the housing 5) by the lance 13 can be strengthened.

  This strengthening of the terminal locking force can be sufficiently achieved even when the lance 13 is made small to reduce the size of the connector 3.

  Further, according to the terminal locking structure 1 of the connector, the locked portion 15 is formed by the rib 19 of the lance 13, and the locking portion 17 is formed by the groove 21 of the holder 9 into which the rib 19 enters. The lance 13 can be easily reduced in size.

  Further, according to the terminal locking structure 1 of the connector, the locked portion 15 is formed by a pair of ribs 19A and 19B protruding from both ends in the width direction of the lance 13, and the locking portion 17 is a pair of ribs. Since each of 19A and 19B is formed by a pair of grooves 21A and 21B, the lance 13 can be fixed with good balance from both sides in the width direction, and the locking force of the lance 13 can be further improved. .

  Further, according to the terminal locking structure 1 of the connector, the terminals 7A and 7B inserted and installed in the cavities 11A and 11B are prevented from being detached by the lances 13A and 13B, respectively. Since the plurality of lances 13A and 13B are fixed by one holder 9, the locking force of the lance 13 can be improved with a simple configuration.

1 Connector terminal locking structure 5 Housing 7, 7A, 7B Terminal 9 Holder 11, 11A, 11B Cavity 13, 13A, 13B Lance 15 Locked part 17 Locking part 19, 19A, 19B Rib 21, 21A, 21B Groove

Claims (4)

A housing provided with a cavity),
A terminal installed in the housing by being inserted into the cavity of the housing;
A lance that is provided in the housing and prevents the terminal from coming off by engaging with a terminal installed in the housing;
A locked portion provided on the lance;
When the terminal is installed in the housing in a state in which the terminal is installed in the housing and the terminal is prevented from being detached by the lance, the latching part is engaged with the locked part. And a holder for fixing the lance,
A terminal locking structure for a connector, comprising: In the terminal locking structure of the connector according to claim 1,
The locked portion is formed by a rib of the lance,
The terminal locking structure for a connector, wherein the locking portion is formed by a groove into which the rib is inserted. In the terminal locking structure of the connector according to claim 1 or 2,
The locked portion is formed of a pair of ribs protruding from both ends in the width direction of the lance,
The terminal locking structure for a connector, wherein the locking portion is formed by a pair of grooves into which the pair of ribs are respectively inserted. In the terminal locking structure of the connector according to any one of claims 1 to 3,
A plurality of the cavity and the lance are provided,
The terminal inserted and installed in each of the plurality of cavities is configured to be prevented from coming off by each of the plurality of lances,
A connector terminal locking structure, wherein the plurality of lances are fixed by one holder.

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