JP2011228143A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector capable of easy unification of the directions of pins, using round pins, even when miniaturization and multipolarity is performed.SOLUTION: In a connector, a pin insertion hole 61 is formed in a spacer inserted into an inner housing, and a lance 62 is provided obliquely at the upper part of the pin insertion hole 61, while an engagement convex part 63 is provided as a pin engagement part at the bottom of the pin insertion hole 61. The spacer is configured to move from a temporary locking of the pin by the lance 62 to a locking if the pin by the engagement convex part by pushing the spacer from a temporary locking position into a locking position. An engagement part 85 of a round pin 80 is provided with an engagement recess part 83 and a rotation direction posture control part 84 formed in substantially cross-section rectangular shape that is pressed into contact with the locking position when the spacer is pressed into the locking position. In addition, a convex part 84f that contacts with an engagement edge part 63a of the engagement convex part of the spacer in preference to a corner part 84c of the rotation direction posture control part 84 is formed on the short-side of the contact surface 84a of the rotation direction posture control part 84, and a pin is rotated in the proper posture when the convex part 84f receives contact pressure from the spacer.

Description

  The present invention relates to a connector for preventing a terminal inserted into a terminal insertion hole from behind by a flexible lance provided so as to face the internal space of the terminal insertion hole.

  Many connectors used for vehicles and the like generally have a rectangular terminal insertion hole formed in a connector housing, and each terminal insertion hole has a rectangular electrical connection portion at the front, as shown in Patent Document 1 in general. It has a configuration with a square terminal inserted. However, when using a square terminal, it is necessary to confirm the direction around the axis of the terminal when it is inserted into the terminal insertion hole, but when the terminal is downsized as the connector is downsized, the terminal It becomes difficult to confirm the directionality of the terminal at the time of insertion, so that becomes small.

  On the other hand, an example of a connector using a round terminal having a cylindrical wire connecting portion is disclosed in Patent Document 2, for example. In this connector, the lance on the connector housing side is engaged with the rear end of the cylindrical electrical connection portion of the round terminal so that the terminal can be inserted into the terminal insertion hole without worrying about the directionality. It has become.

JP 2008-65985 A JP-A-5-258895

  However, even when a round terminal is used, it may be necessary to ensure the directionality of the mating connector with respect to the terminal. For example, when the male tab terminal of the mating connector is received in the electrical connection part of the round terminal and the contact pressure between the terminals is secured with a leaf spring built in the electrical connection part, Round terminals must be assembled to the connector housing to ensure proper orientation.

  However, when the terminal is downsized, it is very difficult to assemble the terminal to the connector housing while confirming the directionality, not only for the square terminal but also for the round terminal.

  Therefore, at the time of inserting the terminal into the terminal insertion hole of the connector housing, the terminal can be inserted into the terminal insertion hole without worrying about the directionality. There has been a request to be able to modify the directionality of the terminals in a unified manner by making use of the ease of rotation.

  In view of the above circumstances, an object of the present invention is to provide a connector that can easily unify the directionality of a terminal even when the terminal is miniaturized or multipolarized while using a round terminal.

  In order to solve the above-mentioned problem, the connector of the invention of claim 1 comprises a connector housing having terminal insertion holes extending in the front-rear direction, and terminals inserted from the rear into the terminal insertion holes of the connector housing. In the connector, each terminal insertion hole of the connector housing is provided with a flexible lance that prevents the terminal from being pulled out backward when the terminal is inserted into the terminal insertion hole from behind. The connector housing includes a connector housing body having a terminal insertion hole formed of a circular hole and a spacer insertion recess formed from an outer peripheral surface toward the inside, and the spacer insertion recess of the connector housing body includes the terminal in the spacer insertion recess. It can be inserted in a direction crossing the insertion direction, and temporarily locked to the connector housing body in the inserted state. A locking means and a final locking means for final locking, a terminal insertion hole corresponding to the terminal insertion hole of the connector housing main body, and a shallow temporary locking position for insertion into the spacer insertion recess. The terminal can be inserted into the terminal insertion hole at a certain time, and the terminal can be moved in the front-rear direction by being fully engaged with the terminal when the insertion position is deep with respect to the spacer insertion recess. When the terminal has been inserted into the terminal insertion hole from the rear with the spacer in the temporary locking position. The lance is integrally provided as a terminal temporary locking means for temporarily locking the terminal, and the terminal final locking portion is located on the inner side of the terminal insertion hole of the spacer with respect to the spacer insertion recess. The At the position on the near side in the insertion direction when entering, provided as an engaging convex part that fits into the engaging concave part on the terminal side, the engaging edge of the engaging convex part is orthogonal to the inserting direction of the spacer The lance is provided from the center of the terminal insertion hole, which is displaced from the front position facing the engagement convex portion of the inner periphery of the terminal insertion hole of the spacer. An engagement edge that is disposed at a position that is oblique to the lance, is set in a direction in which the bending direction of the lance substantially coincides with the oblique direction, and fits into an engagement recess on the terminal side of the lance The portion is provided as an edge portion orthogonal to the bending direction of the lance, while the terminal is configured as a round terminal having a cylindrical shape as an electrical contact portion that is fitted and connected to a terminal on the mating connector side. At the rear of the cylindrical electrical connection of the terminal, the lance and front An engaging portion that engages with the engaging convex portion and positions the terminal in the rotational direction in the engaging process is provided, and a wire connecting portion to which the end of the covered wire is connected is further provided on the rear side. The engaging portion of the terminal remains at the position where the engaging recess is formed, and the engaging recess formed by recessing the opposing two surfaces of the cylindrical peripheral wall constituting the electrical connection portion by substantially the same dimension. A rotation direction posture control unit having a substantially rectangular cross section with the cylindrical peripheral wall as a short side and the inner bottom surface of the engagement recess as a long side, and the engagement recess includes an engagement edge of a lance of the spacer and When the engagement edge of the engagement protrusion is fitted, the terminal is prevented from moving in the front-rear direction, and the rotational direction posture control unit is provided with the engagement edge and the engagement protrusion of the lance of the spacer. Rotation mode generated by the contact pressure when the contact edge Is provided to give rotation to the terminal for rotation direction posture control, and the engagement convex portion is engaged with the center portion in the width direction of the outer side of the short side of the rotation direction posture control portion of the terminal. A convex portion that preferentially hits the edge portion over the corner portion of the rotational direction posture control portion is formed.

  A connector according to a second aspect of the present invention is the connector according to the first aspect, wherein a plurality of terminal insertion holes of the connector housing are arranged in the vertical direction and the horizontal direction of the connector housing, and the spacer of the connector housing body An insertion recess is formed in a direction in which the spacer can be inserted upward from the lower surface of the connector housing body, and each terminal insertion hole of the spacer has a lower position on the inner periphery of the terminal insertion hole. The engagement convex portion is disposed, the lance is disposed at a position obliquely above, and the inclined surface is at least one end in the left-right direction of the engagement edge portion of the engagement convex portion of the spacer. It is characterized by being formed.

  The connector of the invention of claim 3 is the connector according to claim 2, wherein when the arrangement of the terminal insertion holes in the left-right direction is called a row, the terminal insertion holes have a constant vertical line pitch. Are arranged in a straight line at a constant pitch in the left-right direction in each row in the vertical direction, and between the adjacent rows in the vertical direction, the position of the terminal insertion hole is an integral number of the arrangement pitch in the left-right direction. It is characterized by being shifted.

  According to the invention of claim 1, with the spacer inserted into the spacer insertion recess of the connector housing body and temporarily locked, the terminal is inserted into the terminal insertion hole from the rear, and the spacer is inserted to the final locking position in this state. By doing so, the terminal can be reliably prevented from coming off by the engagement of the engaging convex portion provided in the spacer and the engaging concave portion of the terminal. At this time, by inserting the spacer from the temporary locking position to the final locking position, the rotation direction / posture control unit of the terminal whose direction is not appropriate can be pressed by the engagement edge of the engagement convex portion of the spacer. The contact pressure generated by the pressing contact can give the terminal a rotational moment necessary for the rotational direction posture control. Therefore, the directionality of the terminals can be unified only by inserting the spacer to the final locking position.

  By the way, depending on the direction of the rotation direction posture control unit (rotation direction posture) having a substantially rectangular cross section, the engagement portion of the terminal is sandwiched between the bending resistance force (elastic reaction force) of the lance and the insertion force of the spacer, There may be a case where an effective rotational moment does not act on the rotational direction posture control unit. For example, the engagement edge of the engagement protrusion of the spacer is provided as an edge perpendicular to the insertion direction of the spacer, and the corner of the rotation direction posture control unit hits this engagement edge, In many cases, a rotational moment may be generated in the rotation direction attitude control unit. In such a case, if the width of the short side of the rotation direction attitude control unit is increased to some extent in consideration of the strength of the terminal, contact The distance in the direction perpendicular to the acting direction of the force between the corner portion of the rotation direction posture control unit to which pressure is applied and the rotation center of the terminal (the cross-sectional center of the electrical connection portion of the terminal) becomes too small. Even if the contact pressure is applied, an effective rotational moment may not be generated. In this case, it is necessary to further increase the insertion force of the spacer to increase the rotational moment, and it may be difficult to assemble the spacer particularly when there are a large number of terminals.

  In that respect, in the connector of the present invention, the width direction central portion of the outer surface of the short side of the rotation direction posture control unit is more than the corner portion of the rotation direction posture control unit with respect to the engagement edge of the engagement convex portion of the spacer. Since the convex portion that preferentially hits is formed, even if the width dimension of the short side of the rotation direction posture control unit is increased to some extent, the force between the contact point to which the contact pressure from the spacer is applied and the rotation center of the terminal is The distance in the direction perpendicular to the action direction can be increased, and an effective rotational moment can be generated. Therefore, even with a small spacer insertion force, a large rotational force can be applied to the terminal to correct the orientation in the rotational direction, and the terminal orientation can be easily corrected so as to have a unified orientation. Can do. For this reason, it is possible to improve the assemblability.

  In addition, according to the present invention, since the lance as the terminal temporary locking means is integrally provided in the spacer that permanently locks the inserted terminal, each terminal is temporarily locked by the lance, By inserting the spacer to the final locking position, all the terminals can be fully locked by the terminal final locking portion provided on the spacer. Therefore, the assembling workability is improved and the terminal can be securely fixed.

  In the present invention, the engagement edge of the engagement protrusion of the spacer and the engagement edge of the lance are fitted in the engagement recess of the terminal, and the rotation direction posture control unit of the terminal Since the engagement edge of the engagement protrusion and the engagement edge of the lance are in press contact with each other, the rotational direction of the round terminal inserted without worrying about the direction during temporary locking of the lance The posture can be corrected to an appropriate posture that matches the lance, and as described above, when the spacer is pushed to the final locking position when the temporary locking state is shifted to the final locking state, the spacer is pushed. Since the terminal can be corrected to the proper engagement posture by the operation, the terminal can be automatically positioned and assembled in the proper posture at the final assembly stage while using the round terminal.

  According to the invention of claim 2, a large number of terminal insertion holes of the connector housing are arranged in the vertical and horizontal directions of the connector housing, and the spacer insertion recesses of the connector housing body are directed upward from the lower surface of the connector housing body. The engaging projections are arranged at lower positions on the inner periphery of the terminal insertion holes, and the diagonally upper positions are formed in the terminal insertion holes of the spacers. Thus, the lance can be arranged and the bending space of the lance can be secured while effectively utilizing the empty space between the plurality of terminal insertion holes. Therefore, the terminals can be arranged densely, which can contribute to miniaturization and multipolarization of the connector.

  According to the invention of claim 3, since the left and right positions of the terminal insertion holes are shifted in the adjacent upper and lower rows, a large number of spaces are formed in the vertical direction while effectively utilizing the empty space between the terminal insertion holes. Terminal insertion holes can be arranged. Therefore, the terminals can be arranged more densely, and further miniaturization and multipolarization can be achieved. In addition, since the horizontal displacement of the terminal insertion holes in the adjacent upper and lower rows is set to 1 / integer of the terminal pitch in the left / right direction, between the rows separated by a reciprocal of 1 / integer. The positions of the terminal insertion holes in the left-right direction can be matched.

  For example, when the horizontal positions of the terminal insertion holes in the adjacent upper and lower rows are shifted by ½ of the arrangement pitch, the positions of the terminal insertion holes are made to match the horizontal direction in every other row in the vertical direction. be able to. In addition, when the horizontal positions of the terminal insertion holes in the adjacent upper and lower rows are shifted by 1/3 of the arrangement pitch, the positions of the terminal insertion holes are made to match the horizontal direction in every second row in the vertical direction. be able to. Therefore, a certain regularity can be provided in spite of the staggered arrangement.

  In particular, when the terminal insertion holes are arranged while being shifted by 1/3 between adjacent rows, the lance can be arranged without difficulty in the empty space between the terminal insertion holes in the upper row. Reduction can be achieved, terminals can be arranged densely, and it can greatly contribute to miniaturization and multipolarization of the connector.

It is a sectional side view which shows the relationship between the inner housing (equivalent to a connector housing main body) which comprises the connector housing of the connector of embodiment of this invention, an outer housing, and a spacer. It is a perspective view which shows the relationship between the said inner housing and an outer housing. It is a perspective view which fractures | ruptures and shows a part of said inner housing and outer housing. It is a sectional side view which shows the state which assembled | attached the inner housing which temporarily latched the said spacer to the outer housing. It is a perspective view which fractures | ruptures and shows a part of state of FIG. It is a front view of the spacer. It is the elements on larger scale of FIG. It is the perspective view seen from the front side of the spacer. It is the elements on larger scale of FIG. It is the perspective view seen from the rear surface side of the said spacer. It is a front view of the terminal insertion hole of the spacer, and (a) to (c) sequentially increase the angle of the engaging edge of the lance with respect to the engaging edge of the engaging convex portion as θ1 to θ3. It is a figure which shows a state. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the female round terminal used for the connector of embodiment of this invention, (a) is a perspective view which shows the whole structure of a round terminal, (b) is located in the front part of the terminal It is a front view of a cylindrical box part. In the said connector housing, it is a figure which shows the state at the time of carrying out the primary latching (temporary latching) with respect to the inner housing, (a) is a front view, (b) is the AA arrow of (a). FIG. In the connector housing, it is a figure which shows the state at the time of carrying out the secondary latching (main latching) with respect to the inner housing, (a) is a front view, (b) is AA of (a). It is arrow sectional drawing. It is an enlarged front view showing the relationship between the spacer and the engaging portion of the round terminal, (a) is a diagram showing a state when the round terminal is primary locked (temporarily locked) by the lance of the spacer, (B) is a figure which shows the state when a spacer is pushed in to the final locking position, and the round terminal is secondary locked (main locked) by the engaging convex part of the spacer. FIG. 16 is an enlarged side view showing the relationship between the spacer and the engagement portion of the round terminal for convenience of understanding of FIG. 15, and (a) is a primary lock (temporary lock) by the lance of the spacer. (B) shows the state when the spacer is pushed to the final locking position, and the round terminal is secondarily locked (finally locked) by the engaging projection of the spacer. It is a figure which shows the state of. It is a front view which shows the relationship between the engagement part of a round terminal when a round terminal is inserted in the terminal insertion hole of the said spacer, and a lance, (a) is a case where a round terminal is inserted in arbitrary directions The figure which shows the relationship with a lance, (b) is a figure which shows the relationship between the engaging part of a round terminal at the time of primary locking (temporary locking), and a lance. It is a content explanatory view of the attitude control of the terminal when shifting from the primary locking to the secondary locking, (a) is a front view at the time of primary locking, (b) is the spacer from the temporary locking position to the final locking position The front view which shows a mode that a rotational force acts on a round terminal by being pushed in, (c) is a front view at the time of secondary locking. Description of the operation of the embodiment of the present invention when the orientation of the rotation direction posture control unit of the round terminal intersects the lance during the primary locking of the spacer (temporary locking by the lance) In the figure, (a) is a front view showing the relationship between the lance at the time of primary locking, the rotation direction posture control unit, and the engaging edge of the engaging convex portion, and (b) is the main engagement from the temporary locking position of the spacer. By the insertion operation to the stop position, the engaging edge of the engaging convex part is pressed against the convex part of the rotational direction posture control part of the round terminal, and contact pressure is applied at a position away from the center of rotation. FIG. 6 is a front view showing a state in which an effective rotational moment is applied to a round terminal. It is a figure which shows the comparative example with respect to FIG. 19, It is an effect explanatory view in case the convex part is not formed in the short side (contact surface) of the rotation direction attitude control part of a terminal, (a) is at the time of primary locking The front view which shows the relationship between the lance, the rotation direction attitude | position control part, and the engagement edge part of an engagement convex part, (b) is a corner | angular part (short edge part) of a rotation direction attitude | position control part. A situation where the contact is applied to the engaging edge and the distance in the direction perpendicular to the direction of the force between the point where the contact pressure acts and the center of rotation of the terminal is too small, and the rotational moment for rotating the terminal is not effectively generated. FIG. It is the external appearance perspective view seen from the front side of the connector of embodiment of this invention which the assembly completed. It is the front view seen from the front side of the connector. It is BB arrow sectional drawing of FIG. It is a sectional side view which shows the state which fitted the connector of embodiment of this invention with the other party connector.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side sectional view showing the relationship between an inner housing 20, an outer housing 40 and a spacer 60 constituting the connector housing 10A of the connector of the embodiment, and FIG. 2 is a perspective view showing the relationship between the inner housing 20 and the outer housing 40. 3 is a perspective view showing a part of the inner housing 20 and the outer housing 40 in a cutaway view, FIG. 4 is a side sectional view showing a state in which the inner housing 20 with the spacer 60 temporarily locked is assembled to the outer housing 40, and FIG. It is a perspective view which fractures | ruptures and shows a part of state of FIG. 6 is a front view of the spacer 60, FIG. 7 is a partially enlarged view of FIG. 6, FIG. 8 is a perspective view seen from the front side of the spacer 60, FIG. 9 is a partially enlarged view of FIG. FIG. 11 is a front view of the terminal insertion hole 61 of the spacer 60, and FIGS. 11A to 11C are lances 62 with respect to the engagement edge 63 a of the engagement protrusion 63. It is a figure which shows the state which made the angle of this engagement edge part 62a large in order like (theta) 1- (theta) 3.

  12 is a diagram showing the configuration of the female round terminal 80 used in the connector of the embodiment. FIG. 12A is a perspective view showing the entire configuration of the round terminal 80, and FIG. FIG. 13 is a front view of a cylindrical box portion 81 located in front of the terminal, and FIG. 13 shows a state in which the spacer 60 is primarily locked (temporarily locked) to the inner housing 20 in the connector housing 10A. 13 (a) is a front view, FIG. 13 (b) is a cross-sectional view taken along line AA of FIG. 13 (a), and FIG. It is a figure which shows the state at the time of secondary locking (main locking), FIG.14 (a) is a front view, FIG.14 (b) is AA arrow sectional drawing of FIG.14 (a), figure 15 is an enlarged front view showing the relationship between the spacer 60 and the engaging portion 85 of the round terminal 80. 15A is a view showing a state where the round terminal 80 is primarily locked (temporarily locked) by the lance 62 of the spacer 60, and FIG. FIG. 16 is a diagram illustrating a state when the round terminal 80 is secondarily locked (mainly locked) by the engaging convex portion 63 of the spacer 60 when pushed in, and FIG. 16 is for convenience of understanding FIG. FIG. 16A is an enlarged side view showing the relationship between the spacer 60 shown in FIG. 5 and the engaging portion 85 of the round terminal 80. FIG. 16A shows the round terminal 80 temporarily locked (temporarily locked) by the lance 62 of the spacer 60. FIG. 16B shows the state when the spacer 60 is pushed to the final locking position, and the round terminal 80 is secondarily locked by the engagement protrusion 63 of the spacer 60 (main locking). It is a figure which shows the state at the time of being carried out. FIG. 17 is a front view showing the relationship between the engagement portion 85 of the round terminal 80 and the lance 62 when the round terminal 80 is inserted into the terminal insertion hole 61 of the spacer 60. FIG. FIG. 17B is a diagram showing a relationship with the lance 62 when the round terminal 80 is inserted in the direction of FIG. 17B. FIG. 17B is an illustration of the engagement portion 85 of the round terminal 80 and the lance 62 during primary locking (temporary locking). 18 is a diagram for explaining the contents of terminal attitude control when shifting from primary locking to secondary locking, FIG. 18 (a) is a front view at the time of primary locking, FIG. FIG. 18B is a front view showing a state in which a rotational force is applied to the round terminal 80 when the spacer is pushed from the temporary locking position to the final locking position, and FIG. 18C is a front view at the time of secondary locking. .

  Further, in FIG. 19, during the primary locking of the spacer 60 (temporary locking by the lance 62), the direction of the rotational direction posture control unit 84 of the round terminal 80 is in a direction intersecting the lance 62. FIG. 19A is a diagram illustrating the relationship between the lance 62, the rotation direction posture control unit 84, and the engagement edge 63a of the engagement projection 63 during primary locking. FIG. 19B shows a front view, FIG. 19B shows that the engagement edge 63a of the engagement convex portion 63 is turned into the rotational direction posture control portion of the round terminal 80 by the insertion operation from the temporary locking position of the spacer 60 to the final locking position. FIG. 20 is a front view showing a state in which an effective rotational moment is applied to the round terminal 80 by pressing and contacting the convex portion 84f of 84 and applying a contact pressure F4 at a position away from the rotation center O by a distance d. These are figures which show the comparative example with respect to FIG. 19, and are the rotation direction attitude | position control part 84 of a terminal. FIG. 20A is an operation explanatory diagram when a convex portion is not formed on the short side (contact surface 84a). FIG. 20A is a lance 62, a rotation direction posture control portion 84, and an engaging convex portion 63 at the time of primary locking. FIG. 20B is a front view showing the relationship with the engagement edge 63a of the rotation direction posture control unit 84, and the engagement edge 63a of the engagement protrusion 63 is in contact with the corner (the end of the short side) of the rotation direction posture control unit 84. FIG. 6 is a front view showing a situation where a distance d in a direction orthogonal to the direction of the force applied between the point where the contact pressure acts and the center of rotation of the terminal is too small to effectively generate a rotational moment for rotating the terminal. .

  21 is an external perspective view of the connector according to the embodiment of the present invention that has been assembled, viewed from the front side, FIG. 22 is a front view of the connector viewed from the front side, and FIG. FIG. 24 and FIG. 24 are side sectional views showing a state in which the connector of the embodiment is fitted to the mating connector.

  The connector 10 includes a connector housing 10A shown in FIGS. 1 to 5 and a plurality of round terminals 80 shown in FIG. The connector housing 10 </ b> A is configured by combining an inner housing (corresponding to a connector housing body) 20 made of a synthetic resin, an outer housing 40, and a spacer (also referred to as a retainer) 60.

  The connector housing 10A is provided with a large number of terminal insertion holes 25, 61, 45 extending in the front-rear direction and arranged in the up-down direction and the left-right direction. The terminal insertion holes 25, 61, 45 of the connector housing 10A are provided in the connector housing 10A. A round terminal 80 as a terminal is inserted from the rear.

  When the round terminal 80 is inserted into the terminal insertion holes 25, 61, 45 from the rear in the terminal insertion holes 25, 61, 45 of the connector housing 10 </ b> A, respectively, A flexible lance (flexible locking arm) 62 is provided to prevent removal. As will be described later, the lance 62 is provided in the terminal insertion hole 61 of the spacer 60. As shown in FIG. 6, the lance 62 is inclined with respect to the vertical and horizontal directions when viewed from the center of each terminal insertion hole 61. It is arranged in the direction position. Further, as shown in FIG. 7, the bending direction Y5 of each lance 62 is set to a direction substantially coincident with the oblique direction.

  Further, in this connector housing 10A, when the horizontal arrangement of the terminal insertion holes 25, 61, 45 is referred to as “row”, the terminal insertion holes 25, 61, 45 are arranged with a constant vertical line pitch. In addition, each line in the vertical direction is linearly arranged at a constant pitch P in the horizontal direction. In addition, the positions of the terminal insertion holes 25, 61, 45 are shifted by 1 / integer of the arrangement pitch P in the left-right direction (in this embodiment, 1/3 pitch Pa) between rows adjacent in the vertical direction.

  Next, each part will be described.

  The inner housing (connector housing main body) 20 has a rectangular block shape, and has four connecting arms 21 for connecting to the outer housing 40 at the rear end. Each connecting arm 21 has an engaging claw 22 at its tip. The inner housing 20 is formed with terminal insertion holes 25 made up of a large number of circular holes, and the front ends of the inner housings 20 serve as the inlet holes 25a (see FIG. 13) of the mating male terminals. Open to the wall.

  Further, the inner housing 20 is formed with a spacer insertion recess 24 from the lower surface (outer peripheral surface) to the inside, and the spacer 60 is inserted into the spacer insertion recess 24 in the insertion direction Y4 (see FIG. 4), and can be inserted as indicated by an arrow Y1 (see FIG. 1) from the bottom to the top. As shown in FIGS. 13 and 14, the temporary insertion receiving portion 27 with which the temporary locking means 67 of the spacer 60 is engaged and the final locking means 68 of the spacer 60 are engaged in the spacer insertion recess 24. A mating lock receiving portion 26 is provided.

  Further, the rear end outer peripheral portion 28 of the inner housing 20 receives the fitting cylindrical wall of the mating connector 110 between the inner peripheral wall 48 of the square cylindrical peripheral wall 41 of the outer housing 40 when assembled to the outer housing 40. The outer dimensions are set such that the annular gap 29 can be secured.

  On the other hand, as shown in FIG. 1, the outer housing 40 is formed by closing the rear end opening of the square cylindrical peripheral wall 41 whose front end is opened by the rear end wall 42. Can be accommodated. A terminal insertion hole 45 corresponding to the terminal insertion hole 25 of the inner housing 20 is also formed in the rear end wall 42 of the outer housing 40. As shown in FIGS. 3, 13, and 14, a connection hole 46 into which the connection arm 21 of the inner housing 20 is inserted is provided, and the engagement claw 22 of the connection arm 21 is engaged in the connection hole 46. A mating engagement protrusion 47 is formed.

  A main body 51 of a thick plate-like mat seal 50 is disposed on the front surface (inner surface) of the rear end wall 42 of the outer housing 40. The mat seal 50 is made of a flexible rubber and is formed integrally with the outer housing 40 by two-color molding or insert molding.

  The main body 51 of the mat seal 50 having the seal lip 53 on the outer peripheral portion is connected and integrated with the back plate portion 52 on the rear surface (outer surface) of the rear end wall 42 through the terminal insertion hole 45. The mat seal 50 has an insertion hole (unified with reference numeral 45) corresponding to the terminal insertion hole 45, and an electric wire W extending behind the round terminal 80 on the inner periphery of the insertion hole (FIG. 23). An inner peripheral seal lip (reference numeral omitted) is provided in close contact with the outer periphery of the outer cover to seal between the electric wire and the outer housing 40.

  Further, as shown in FIG. 3, the mat seal 50 is a seal that seals between the connecting arm 21 and the outer housing 40 when the connecting arm 21 of the inner housing 20 is inserted into the connecting hole 46 of the outer housing 40. A hole 56 is provided.

  Next, the spacer 60 will be described with reference to FIGS. 6 to 11, 13, and 14.

  The spacer 60 is a thick plate having a thickness that can be inserted into the spacer insertion recess 24 of the inner housing 20. Here, a primary locking (temporary locking) position (see FIG. 13) is set at a shallow lower position in which the spacer 60 is inserted into the spacer insertion recess 24, and a secondary locking (main engagement) is set at a deep upper position in the insertion. Stop) position (FIG. 14) is set. Therefore, at the time of the primary locking shown in FIG. 13, a space S <b> 1 in which the spacer 60 can be further pushed in is secured behind the spacer insertion recess 24.

  As shown in FIGS. 13 and 14, the spacer 60 is temporarily engaged with the temporary locking receiving portion 27 on the inner housing 20 side in a state where the spacer 60 is inserted into the spacer insertion recess 24. Temporary locking means 67 that temporarily locks in the locking position, and main locking means 68 that locks the spacer 60 in the final locking position by engaging with the main locking receiving portion 26 on the inner housing 20 side. Is provided.

  The spacer 60 has a large number of terminal insertion holes 61 corresponding to the terminal insertion holes 25 and 45 of the inner housing 20 and the outer housing 40. The arrangement of the terminal insertion holes 61 is as described above. However, the terminal insertion hole 61 of the spacer 60 is formed in an oblong shape that is long in the vertical direction.

  Each terminal insertion hole 61 is provided with a lance 62 as a terminal temporary locking means. The lance 62 is disposed obliquely above the vertical direction and the horizontal direction when viewed from the center of each terminal insertion hole 61. In this embodiment, the lance 62 is disposed on the upper right side when viewed from the front (front surface) of the connector, and the bending direction Y5 (FIG. 7) is set in a direction substantially coincident with the oblique direction.

  When the spacer 60 is in the temporary locking position, the lance 62 bends outward to allow the round terminal 80 to be inserted into the terminal insertion hole 61, and when the round terminal 80 is inserted to a predetermined position. When the engaging edge 62a provided as an edge perpendicular to the bending direction is engaged with the engaging recess 83 of the round terminal 80, the round terminal 80 is pulled out backward. It is comprised as what can prevent (temporary latching).

  Further, when the spacer 60 is pushed into the inner bottom portion of the terminal insertion hole 61 of the spacer 60 from the temporary locking position to the final locking position, the engagement edge 63 a is formed in the engagement recess 83 of the round terminal 80. An engagement convex portion 63 is provided as a terminal main locking portion that is engaged to reliably prevent (main locking) the movement of the round terminal 80 in the front-rear direction. The engagement edge 63a of the engagement protrusion 63 is provided as an edge substantially parallel to the left-right direction, whereby the engagement edge 63a of the engagement protrusion 63 and the engagement edge of the lance 62 are provided. An angle θ (FIG. 7) larger than 0 ° and smaller than 90 ° is secured between 62a.

  Accordingly, the engaging convex portion 63 as the terminal main locking portion is a position on the near side in the insertion direction when the spacer 60 is inserted into the spacer insertion concave portion 24 in the inner periphery of the terminal insertion hole 61 of the spacer 60. The engaging edge 63a of the engaging protrusion 63 is provided as an edge substantially parallel to the direction orthogonal to the insertion direction of the spacer 60.

  Further, the lance 62 is disposed at an obliquely upper right position on the inner periphery of the terminal insertion hole 61 of the spacer 60 and shifted from the front position facing the engaging convex portion 63, and the lance 62 has a round terminal 80 side. An engaging edge 62a that fits into the engaging recess 83 is provided as an edge perpendicular to the bending direction of the lance 62 (the direction of the arrow Y5).

  As shown in FIG. 12, the round terminal 80 has a cylindrical box part (electrical connection part) 81 for receiving the male terminal 112 of the mating connector 110 at the front part. A spring piece 82 is provided inside. On the rear side of the box portion 81 of the round terminal 80, an engagement portion 85 that engages with the lance 62 and the engagement convex portion 63 and positions the round terminal 80 in the rotation direction in the engagement process is provided. ing. Further, on the further rear side, an electric wire connecting portion (conductor caulking portion 87 and covering caulking portion 88) to which the end of the covered electric wire W is connected is provided.

  The engaging portion 85 includes an engaging recess 83 formed by denting opposite two surfaces of the cylindrical peripheral wall constituting the box portion 81 by substantially the same dimension, and a cylindrical peripheral wall remaining at the position where the engaging recess 83 is formed. And a rotational direction posture control section 84 having a substantially rectangular cross section with the short side as the long side and the inner bottom surface of the engaging recess 62 as the long side.

  The engagement recess 83 is provided to prevent the movement of the round terminal 80 in the front-rear direction by fitting the engagement edge 62 a of the lance 62 of the spacer 60 and the engagement edge 63 a of the engagement protrusion 63. The inner bottom surface of the engaging recess 83 (corresponding to the long side portion of the rotation direction posture control unit 84) is a positioning surface 83a.

  Further, the rotation direction posture control unit 84 has a round shape due to a rotation moment generated by contact pressure when the engagement edge 62a of the lance 62 of the spacer 60 and the engagement edge 63a of the engagement protrusion 63 are pressed and contacted. The terminal 80 is provided to give rotation for rotation direction posture control, and the short side portion of the rotation direction posture control unit 84 constituted by the outer peripheral surface of the cylindrical peripheral wall of the box portion 81 becomes the contact surface 84a. ing.

  Then, the cross section is substantially rectangular with respect to the engaging edge 63a of the engaging convex portion 63 of the spacer 60 at the center in the width direction of the pair of contact surfaces 84a corresponding to the short side portion of the rotational direction posture control portion 84. A convex portion 84 f that preferentially hits the corner portion of the rotational direction posture control portion 84 is formed. The convex portion 84f is formed as a hemispherical shape by locally bulging a part of the cylindrical peripheral wall of the box portion 81 left in the engaging portion 85 to the outside. Thus, by providing the local convex part 84f, the strength of the engaging part 84 is not lowered, that is, the length of the short side (width of the contact surface 84a) of the rotational direction posture control part 84 having a substantially rectangular cross section. It is possible to prevent the corner portion of the rotation direction posture control unit 84 from hitting the engagement edge 63a of the engagement projection 63 of the spacer 60 first.

  On the other hand, when the convex portion 84f is not present, the cross section of the rotation direction posture control portion 84 is substantially rectangular, so that the spacer 60 is lifted as shown in FIGS. 18C and 20B. (When inserted to the final locking position), the spacer 60 side is placed on the contact surface 84a of the rotation direction posture control unit 84 or the corner of the rotation direction posture control unit 84 which is the end of the contact surface 84a. The engaging edge 63a of the engaging convex portion 63 is abutted. The direction in which the rotational moment acts depends on the positional relationship between the contact position and the cross-sectional center (rotation center) O of the round terminal 80.

  At this time, as shown in FIGS. 18A and 18B, when the lance 62 appropriately temporarily locks the round terminal 80, the short side of the rotational direction posture control unit 84 having a substantially rectangular cross section is provided. Dimensions (the width of the contact surface 84a), the radius from the cross-sectional center O of the round terminal 80 to the contact surface 84a, and the engagement edge 62a of the lance 62 and the engagement edge 63a of the engagement convex 63 A direction perpendicular to the acting direction of the force between the point that receives the contact pressure from the spacer 60 (mainly the position of the corner of the rotation direction posture control unit 84) and the rotation center O of the round terminal 80 depending on the angle θ formed. Since the distance at is uniquely determined, it is determined whether or not an effective rotational moment is reliably generated.

  Therefore, the angle θ formed by the engagement edge 63a of the engagement protrusion 63 and the engagement edge 62a of the lance 62 is within a range of 30 ° to 60 ° as shown in FIG. Is set to 11A shows the case where θ is θ1 (30 °), FIG. 11B shows the case where θ is θ2 (45 °), and FIG. 11C shows the case where θ is θ3 (60 °). Yes. In either case, it is possible to ensure that the rotational moment works.

  Next, the assembly procedure will be described.

  When assembling the connector 10, first, as indicated by an arrow Y1 in FIG. 1, the spacer 60 is inserted into the spacer insertion recess 24 of the inner housing 20 from below, and the spacer 60 is temporarily locked into the inner housing 20 (temporary). (The state of FIG. 13).

  Next, the inner housing 20 is assembled to the outer housing 40 as indicated by the arrow Y1 in FIG. 1 and the arrow Y3 in FIG. 4, and the outer housing 40 and the inner housing 20 are connected by the connecting arm 21.

  In this state, the temporarily locked connector housing 10A is completed, and the round terminal 80 is inserted from the rear portion of the outer housing 40 as indicated by an arrow Y4 in FIG.

  When the round terminal 80 is inserted until the engaging portion 85 of the round terminal 80 reaches the lance 62, the round terminal 80 is primarily locked by the lance 62 as shown in FIGS. 15 and 16. At this time, as shown in FIG. 17 (a), the contact surface 84a of the rotation direction posture control unit 84 of the engaging portion 85 and the lance 62 are in any orientation when the round terminal 80 is inserted in any direction. Since the rotational contact for correcting the posture acts on the round terminal 80 due to the pressing contact of the engaging edge 62a, the engaging recess 83 is in an appropriate posture with respect to the lance 62 as shown in FIG. Since the positioning surface 83a of the engagement recess 83 and the engagement edge 62a of the lance 62 are stable in parallel with each other, and the engagement edge 62a of the lance 62 is fitted into the engagement recess 83, the round The shaped terminal 80 is primarily locked (temporarily locked).

  When all the round terminals 80 have been inserted, the spacer 60 is pushed further upward, so that the spacer 60 is secondarily locked (finally locked) to the inner housing 20 (state shown in FIG. 14). Then, in the process of lifting the spacer 60, the lance 62 is separated from the engaging portion 85 of the round terminal 80 and the engaging edge 63a of the engaging convex portion 63 is round as shown in FIG. The corner 80 of the contact surface 84a of the rotational direction posture control unit 84 of the shaped terminal 80 is pressed and contacted, and a rotational moment is generated by the contact pressure F1 and the contact position.

  As a result, the round terminal 80 rotates in the direction of the arrow R1, and finally the engagement edge 63a of the engagement protrusion 63 is further lifted, and as shown in FIG. The engaging edge 63a contacts the positioning surface 83a which is the bottom surface of the engaging recess 83 to determine the orientation of the round terminal 80 in the rotational direction, and the engaging edge 63a of the engaging protrusion 63 The round terminal 80 is secondarily locked (finally locked) by being fitted into the box 83. At this time, the spacer 60 is permanently locked to the inner housing 20, thereby completing the assembly of the connector 10 as shown in FIGS. 21 to 23.

  That is, with the spacer 60 inserted into the spacer insertion recess 24 of the inner housing (connector housing main body) 20 and temporarily locked, the round terminal 80 is inserted into the terminal insertion hole 25 from the rear, and the spacer 60 is fixed in this state. By inserting to the locking position, the round terminal 80 can be reliably prevented from coming off by the engagement of the engagement convex portion 63 provided on the spacer 60 and the engagement concave portion 83 of the round terminal 80.

  At that time, by the operation of inserting the spacer 60 from the temporary locking position to the final locking position, the rotation direction posture control of the round terminal 80 whose direction is not appropriate at the engagement edge 63a of the engagement protrusion 63 of the spacer 60. The part 84 can be pressed, and the rotational moment required for the rotational direction posture control can be given to the round terminal 80 by the contact pressure F1 caused by the pressing contact. Therefore, the directivity of all the round terminals 80 can be unified only by inserting the spacer 60 to the final locking position.

  By the way, as shown in FIG. 20, in some cases, the engaging recess 83 of the round terminal 80 and the engaging edge 62a of the lance 62 are not properly engaged, and the rotational direction posture control unit 84 having a substantially rectangular cross section. However, it may stop in the direction intersecting with the engaging edge 62a of the lance 62. When such a case occurs, the engagement portion 85 of the round terminal 80 is sandwiched between the bending resistance force (elastic reaction force) of the lance 62 and the insertion force of the spacer 60, thereby causing the rotation direction posture control unit 84 to An effective rotational moment may not work.

  For example, as in the comparative example shown in FIGS. 20A and 20B, when the protrusion 84 f is not provided on the contact surface 84 a of the rotation direction posture control unit 84 of the round terminal 80, The engaging edge 63 a of the engaging convex 63 hits the corner 84 c of the rotation direction posture control unit 84. In such a case, if the width dimension of the short side of the rotation direction posture control unit 84 is increased to some extent in consideration of the strength of the round terminal 80, the corner portion 84c of the rotation direction posture control unit 84 to which contact pressure is applied. And the rotation center of the round terminal 80 (cross-sectional center of the electrical connection portion of the terminal) O, the distance d in the direction perpendicular to the direction of the force may be too small. Even if contact pressure is applied, an effective rotational moment may not be generated. In this case, it is necessary to further increase the insertion force of the spacer 60 to increase the rotational moment. In particular, when there are a large number of terminals 60, the assembly of the spacer 60 may be difficult.

  However, in the connector 10 of this embodiment, as shown in FIGS. 19A and 19B, the center in the width direction of the outer surface (contact surface 84a) of the short side of the rotation direction posture control unit 84 of the round terminal 80 is used. Since the convex portion 84f that preferentially hits the engaging edge portion 63a of the engaging convex portion 63 of the spacer 60 over the corner portion 84c of the rotational direction posture control portion 84 is formed in the portion, the rotational direction posture control portion Even when the width dimension of the short side of 84 is increased to some extent, the action of the force between the contact point (point on the surface of the convex portion 84 f) where the contact pressure from the spacer 60 is applied and the rotation center O of the round terminal 80. The distance d in the direction perpendicular to the direction can be increased, and an effective rotational moment can be generated. Therefore, even with a small spacer insertion force, a large rotational force for correcting the orientation of the rotational direction can be applied to the round terminal 80, and the orientation of the terminal can be easily made to have a unified directionality. It can be corrected. For this reason, it is possible to improve the assemblability.

  In the above description, the engagement recess 83 of the round terminal 80 and the engagement edge 62 a of the lance 62 are not properly engaged, and the rotational direction posture control unit 84 having a substantially rectangular cross section is used. The usefulness of the convex portion 84f when stopped in the direction intersecting with the portion 62a has been described. As shown in FIGS. 18A and 18B, the engaging concave portion 83 of the round terminal 80 and the lance 62 are provided. Even when the engagement edge 62a of the lance 62 is in contact with the positioning surface 83a that is the inner bottom surface of the engagement recess 83 of the round terminal 80, the protrusion 84f Plays the same role as above.

  As a result, the restriction on the range (θ = 30 ° to 60 °) of the angle θ (FIG. 7) of the engagement edge 62a of the lance 62 with respect to the engagement edge 63a of the engagement protrusion 63 can be relaxed. . For example, even when the angle θ is set to 20 ° to 70 °, the presence of the convex portion 84f makes it possible to generate an effective rotational moment for correcting the posture of the round terminal 80 by pushing the spacer 60.

  After assembling the connector 10 as described above, as shown in FIG. 22, when the connector 10 is fitted to the mating connector 110, the tip of the mating wall portion of the mating connector housing 111 is connected to the connector 10 of the embodiment. By entering the annular gap 29 between the inner housing 20 and the outer housing 40 and the fitting wall portion being in close contact with the seal lip 53 of the mat seal 50, the fitting portion between the inner housing 20 and the mating connector housing 111 is sealed. Further, the male terminal 112 of the mating connector 110 is introduced from the insertion hole at the front end of the inner housing 20 into the box portion 18 of the round terminal 80 held in the inner housing 20, and the terminals of both connectors are connected to each other.

  According to the connector 10 of the present embodiment, the following effects can be obtained in addition to the contents described above.

  For example, since the lance 62 as the terminal temporary locking means is integrally provided on the spacer 60 that permanently locks the inserted round terminal 80, each round terminal 80 is temporarily locked by the lance 62. In this state, by inserting the spacer 60 to the final locking position, the all-round terminals 80 can be fully locked by the terminal main locking portions (engagement convex portions 63) provided on the spacer 60 all at once. Therefore, the assembling workability is improved and the terminal can be securely fixed.

  Further, according to the connector 10 of the present embodiment, the engagement edge portion 63 a of the engagement protrusion 63 of the spacer 60 and the engagement edge portion 62 a of the lance 62 are fitted in the engagement recess 83 of the round terminal 80. In addition, since the engagement edge 63a of the engagement protrusion 63 of the spacer 60 and the engagement edge 62a of the lance 62 are in press contact with the rotation direction posture control unit 84 of the round terminal 80, At the time of temporarily locking the lance 62, the posture of the round terminal 80 inserted without worrying about the direction can be corrected to an appropriate posture suitable for the lance 62, and as described above, Since the round terminal 80 can be corrected to an appropriate engagement posture by the pushing operation of the spacer 60 when the spacer 60 is pushed to the full locking position when shifting from the locked state to the final locked state. Do not use round terminal 80 Et al. Also, in the final assembly stage, it can be assembled to position the terminal to automatically correct posture.

  Further, according to the connector 10 of the present embodiment, the terminal insertion holes 25, 45, 61 of the connector housing 10A are arranged in a large number in the vertical direction and the horizontal direction of the connector housing 10A, and the inner housing 20 that is the connector housing body is arranged. The spacer insertion recess 24 is formed in a direction in which the spacer 60 can be inserted upward from the lower surface of the inner housing 20, and the terminal insertion hole 61 of the spacer 60 has a lower side of the inner periphery of the terminal insertion hole 61. Since the engaging projection 63 is disposed at the position of the lance 62 and the lance 62 is disposed at the obliquely upper position, the lance 62 is disposed while effectively utilizing the empty space between the plurality of terminal insertion holes 61. Or the bending space of the lance 62 can be secured. Accordingly, the terminal insertion holes 61, that is, the round terminals 80 can be densely arranged, which can contribute to the miniaturization and multipolarization of the connector 10.

  Moreover, according to the connector 10 of this embodiment, since the position of the terminal insertion holes 25, 45, 61 in the left-right direction is shifted between adjacent upper and lower rows, the empty space between the terminal insertion holes 25, 45, 61 is increased. A large number of terminal insertion holes 25, 45, 61 can be arranged densely in the vertical direction while being effectively used. Therefore, the round terminals 80 can be arranged more densely, and further miniaturization and multipolarization can be achieved.

  Further, since the horizontal displacement amount Pa of the terminal insertion holes 25, 45, 61 in the adjacent upper and lower rows is set to 1/3 of the terminal pitch P in the left and right direction, every second row in the vertical direction. The positions of the terminal insertion holes 25, 45, 61 can be matched in the left-right direction. Therefore, a certain regularity can be provided in spite of the staggered arrangement. In particular, when the terminal insertion holes 61 are arranged while being shifted by 1/3 pitch between adjacent rows, the lances 62 can be arranged without difficulty in the empty space between the terminal insertion holes 61 in the upper row. The pitch of the holes 61 can be reduced, the round terminals 80 can be densely arranged, and the connector can be greatly reduced in size and multipolarity.

  In the above embodiment, the terminal pitch is shifted by 1/3 between the upper and lower rows, but may be shifted by 1/2. In any case, it is only necessary to shift the pitch by an integer. Further, the present invention can be applied even when the terminal insertion holes 61 between the rows arranged in the vertical direction are not displaced in the horizontal direction and the terminal insertion holes 61 are linearly arranged in the horizontal direction and the vertical direction.

  In the above embodiment, a case where a large number of terminal insertion holes 25, 45, 61 are arranged in both the vertical direction and the horizontal direction of the connector housing 10A has been shown, but the present invention has a single terminal. It can also be applied to connectors and connectors with a smaller number of terminals.

10 connector 10A connector housing 20 inner housing (connector housing body)
24 spacer insertion recess 25 terminal insertion hole 40 outer housing 45 terminal insertion hole 60 spacer 61 terminal insertion hole 62 lance (flexible locking arm)
62a engaging edge 63 engaging convex 63a engaging edge 67 temporary locking means 68 permanent locking means 80 round terminal (terminal)
81 Box part (electrical connection part)
83 Engaging recess 83a Positioning surface (inner bottom surface, long side portion of engaging recess)
84 Rotation direction posture control part 84a Contact surface (short side part)
84c Corner portion 84f Convex portion 85 Engaging portion 87 Conductor caulking portion (wire caulking portion)
88 Covered crimping part (wire crimping part)
110 Mating connector 112 Male terminal W Coated wire

Claims (3)

A connector housing having terminal insertion holes extending in the front-rear direction; and terminals inserted into the terminal insertion holes of the connector housing from the rear. The terminals are inserted into the terminal insertion holes of the connector housing from the rear. In the connector provided with a flexible lance that prevents the terminal from being pulled backward when inserted into the terminal insertion hole,
The connector housing has a connector insertion body having a terminal insertion hole formed of a circular hole and a spacer insertion recess formed from an outer peripheral surface toward the inside, and insertion of the terminal into the spacer insertion recess of the connector housing body A temporary locking means for temporarily locking with respect to the connector housing body in the inserted state, and a final locking means for final locking. A terminal insertion hole corresponding to the terminal insertion hole, and further allowing insertion of the terminal into the terminal insertion hole when the insertion position is shallow with respect to the spacer insertion recess, and with respect to the spacer insertion recess. A terminal main locking portion that prevents the terminal from moving in the front-rear direction by being fully engaged with the terminal when in the deeply locked main locking position. A spacer having, in the configuration,
The lance is integrated with the spacer as terminal temporary locking means for temporarily locking the terminal when the terminal is inserted into the terminal insertion hole from behind with the spacer in the temporary locking position. Provided in
The terminal main locking portion is located on the inner side of the terminal insertion hole of the spacer at a position on the near side in the insertion direction when the spacer is inserted into the spacer insertion recess. The engagement edge of the engagement protrusion is provided as an edge substantially parallel to the direction perpendicular to the insertion direction of the spacer,
The lance is disposed at a position in an oblique direction as viewed from the center of the terminal insertion hole, which is shifted from a front position facing the engagement convex portion, of the inner periphery of the terminal insertion hole of the spacer. The edge of the lance is set in a direction substantially coincident with the oblique direction, and the engaging edge that fits into the engaging recess on the terminal side of the lance is perpendicular to the bending direction of the lance. While provided as
The terminal is configured as a round terminal having a cylindrical shape for an electrical contact portion to be fitted and connected to a terminal on the mating connector side, and the lance and the engagement member are provided at a rear portion of the cylindrical electrical connection portion of the round terminal. An engaging portion that engages with the mating convex portion and positions the terminal in the rotational direction in the engaging process is provided, and further on the rear side thereof, an electric wire connecting portion to which the terminal of the covered electric wire is connected is provided,
The engaging portion of the terminal includes an engaging recess formed by recessing two opposing surfaces of the cylindrical peripheral wall constituting the electrical connecting portion by substantially the same size, and the engagement recess remaining at the position where the engaging recess is formed. A rotation direction posture control unit having a substantially rectangular cross section with a cylindrical peripheral wall as a short side and an inner bottom surface of the engagement recess as a long side;
The engagement recess is provided to prevent the terminal from moving in the front-rear direction by fitting the engagement edge of the lance of the spacer and the engagement edge of the engagement protrusion.
The rotational direction posture control unit is configured to control the rotational direction posture on the terminal by a rotational moment generated by contact pressure when the engagement edge portion of the lance of the spacer and the engagement edge portion of the engagement convex portion are in press contact. Provided to give rotation for
A convex portion that preferentially hits the engaging edge portion of the engaging convex portion over the corner portion of the rotational direction posture control portion at the center portion in the width direction of the outer side of the short side of the rotational direction posture control portion of the terminal A connector characterized by being formed. The connector according to claim 1,
A plurality of terminal insertion holes of the connector housing are arranged in the vertical and horizontal directions of the connector housing, and the spacer insertion recesses of the connector housing body are oriented so that the spacer can be inserted upward from the lower surface of the connector housing body. Each of the terminal insertion holes of the spacer is formed with the engagement convex portion disposed at a lower position of the inner periphery of the terminal insertion hole, and the lance is disposed at an oblique upper position. The connector, wherein the inclined surface is formed at at least one end in the left-right direction of the engagement edge of the engagement protrusion of the spacer. The connector according to claim 2,
When the horizontal arrangement of the terminal insertion hole engagement edges is called a row, the terminal insertion holes are arranged with a constant vertical pitch between rows, and at a constant pitch in the horizontal direction in each vertical row. A connector characterized in that the positions of the terminal insertion holes are shifted by an integral number of the arrangement pitch in the left-right direction between lines arranged in a straight line and adjacent in the up-down direction.

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