JP5316306B2 - connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent damage on a cylindrical fitting-in section where a groove and a window hole are formed. <P>SOLUTION: A connector includes a first housing 10 wherein a terminal storage part 12 is surrounded by the cylindrical fitting-in part 13, the groove 22 with a square cross section formed at an inner periphery of a pointed head part of the cylindrical fitting-in part 13, the window hole 20 formed on the cylindrical fitting-in part 13, a second housing wherein a hood part is extended from a terminal holding part, and a protrusion formed on an outer periphery of a pointed head part of the hood part. Both housings are fitted in to each other while the protrusion is entered into the groove 22. A reinforced part 23, wherein at least a part of a groove corresponding zone 13A corresponding to the groove 22 among cylindrical fitting-in parts 13 and at least a part of a groove adjacent zone 13B adjacent to the groove corresponding zone 13A are heaped up at an outer surface side, is formed on the cylindrical fitting-in part 13. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a connector.

  Patent Document 1 includes a first housing in which the terminal accommodating portion is surrounded by a cylindrical fitting portion, and a second housing in which the hood portion is extended from the terminal holding portion, and the hood portion is accommodated in the terminal. The connector which fits both housings by making it approach into the clearance gap between a part and a cylindrical fitting part is disclosed.

  In this connector, a plurality of types of first housings and second housings having the same overall shape and dimensions are prepared, and an appropriate combination of the first housing and the second housing is fitted therein. A rib-shaped protrusion is formed on the outer periphery of the front end of the hood, and a groove having a square cross section is formed on the inner periphery of the front end of the cylindrical fitting portion, and the position of the protrusion and the groove is set for each appropriate combination. By changing, it is possible to prevent the wrong combination of housings from being erroneously fitted.

  Patent Document 2 discloses a first housing, a lever provided rotatably on the first housing, a second housing engageable with the first housing, and a cam follower provided on the second housing. A lever-type connector is disclosed in which both housings are fitted by cam action by engagement of the cam groove of the lever and the cam follower as the lever is rotated.

  In this connector, the position of the pivot center of the lever and the engagement position of the cam groove and the cam follower are arranged so as to be spaced apart from each other along the fitting direction of both housings. There is a concern that the postures of both housings may be inclined with the engagement position of the two as a fulcrum. Therefore, a guide groove is formed in one housing along the fitting direction of both housings, and a rib is formed in the other housing along the fitting direction of both housings. The prevention of the inclination of the posture.

JP 2004-342373 A JP 2003-151684 A

  In the connector described in Patent Document 1, it is possible to employ a structure in which a retainer is assembled from the side with respect to the terminal accommodating portion, and the terminal fitting inserted into the terminal accommodating portion is retained by the retaining action of the retainer. In this case, in order to assemble the retainer to the terminal accommodating portion from the side, a through hole is formed in the cylindrical fitting portion. Thus, the window hole is formed in the cylindrical fitting portion. If this happens, there are concerns about the following problems.

  When an external force is applied to a region where a groove having a square cross section is formed in the cylindrical fitting portion, stress concentrates on the corners of the groove. Therefore, when the window hole and the groove are located close to each other, when an external force is applied to the cylindrical fitting part, a crack from the corner of the groove to the opening edge of the window hole occurs. In addition, the tubular fitting portion may be damaged.

  Further, in the case of the connector described in Patent Document 2, if the clearance between the guide groove and the rib is increased, the function of preventing the inclination between the housings is reduced. Therefore, the clearance between the guide groove and the rib is reduced. It is preferable to pack. However, if the clearance is reduced, the frictional force between the guide groove and the rib increases, and the fitting resistance increases. Because of such circumstances, the connector described in Patent Document 2 requires a means for reliably preventing the inclination between the two housings while reducing the fitting resistance.

  This invention is completed based on the above situations, Comprising: It aims at preventing that the cylindrical fitting part in which the groove part and the window hole are formed is damaged.

As means for achieving the above object, the invention of claim 1 is formed on the first housing in a form in which the terminal accommodating portion is surrounded by the cylindrical fitting portion, and on the inner periphery of the distal end portion of the cylindrical fitting portion. A groove portion having a rectangular cross section, a through hole for inserting a retainer formed in the cylindrical fitting portion and assembled in the terminal accommodating portion, and a hood portion extending from the terminal holding portion. A second housing and a protrusion formed on the outer periphery of the distal end portion of the hood portion, and the hood portion is inserted into a gap between the terminal accommodating portion and the cylindrical fitting portion, and the protrusion is inserted into the groove portion. In the connector adapted to fit the first housing and the second housing by allowing a portion to enter, the tubular fitting portion includes a groove corresponding to the groove portion of the tubular fitting portion. At least part of the corresponding area and before Groove reinforcement portion in a form raised and at least a portion to the outer surface side of the corresponding adjacent area groove adjacent region is formed, the reinforcing portion extends in a rib shape along the distal edge of the tubular fitting portion It has the feature in having.

According to a second aspect of the present invention, in the first aspect of the present invention, the reinforcing portion has a portion extending in a rib shape over a region extending from a leading edge of the cylindrical fitting portion to an opening edge of the window hole. It is characterized by

According to a third aspect of the present invention, in the one according to the first or second aspect, the opening edge of the window hole is at an end portion of the front edge near the tip edge of the cylindrical fitting portion of the opening edge. It has the corner edge part which is located, The said reinforcement part has the characteristic in the place which has the part which faces the said corner edge part.

  Further, as means A for solving the problem required in the connector described in Patent Document 2, that is, the problem of reliably preventing the inclination between the two housings while reducing the fitting resistance, the first housing, A lever provided rotatably on the first housing; a second housing engageable with the first housing; and a cam follower provided on the second housing. In the lever-type connector in which the first housing and the second housing are fitted by cam action by engagement between the cam groove of the lever and the cam follower, the first housing has the first housing A first restricting surface extending along a fitting direction of the first housing and the second housing is formed, and the second housing includes the first housing. It is a form extended along the fitting direction of the second housing, wherein a second restriction surface that can be opposed to the first restriction surface is formed, and at least one of the first restriction surface and the second restriction surface. The restriction surface is formed in a rib-like shape, and a restriction protrusion capable of contacting the other restriction surface is formed so as to extend along the fitting direction of the first housing and the second housing. In addition, the protruding end edge of the restricting protrusion may have a sharp shape.

  According to the configuration of the solution A, in the process of fitting the first housing and the second housing, the regulation protrusion formed on one regulation surface comes into contact with the other regulation surface, so that the inclination between the two housings is achieved. Is regulated. The restriction protrusion is formed in a rib shape so as to extend along the fitting direction of both housings, and the protruding edge of the restriction protrusion has a sharp shape, so that the contact between the restriction protrusion and the other restriction surface The area is kept small, and the fitting resistance is reduced.

As the solution B, in the solution A, one of the first housing and the second housing is provided with a plurality of types of male terminal fittings having different current values when energized. A partition wall for partitioning the plurality of types of male terminal fittings is formed, and the other of the first housing and the second housing is formed with a relief groove for allowing the partition wall to enter, It is good also as a structure by which the outer surface of a partition wall and the inner surface of the said escape groove are made into the said control surface.
According to the configuration of the solution B, the partition wall for partitioning the male terminal fittings having different current values when energized and the relief groove for allowing the partition wall to enter are effectively used as the restriction surface. Simplification of the shape can be achieved.

Further, as the solving means C, in the solving means B, the restriction protrusion may be arranged only on the inner surface of the escape groove.
According to the configuration of the solution C, since the restriction protrusion is disposed only in the escape groove, the restriction protrusion is hardly affected by external interference, and the restriction protrusion can be protected from deformation and damage.

<Invention of Claim 1>
By forming the reinforcing portion in the cylindrical fitting portion, the groove corresponding region corresponding to the groove portion and the groove adjacent region adjacent to the groove corresponding region in the cylindrical fitting portion are thickened. The thickened portion includes the corners of the groove portion of the cylindrical fitting portion. Therefore, even if an external force acts on the cylindrical fitting portion, stress does not concentrate on the corner of the groove, and there is a possibility that a crack from the tip of the corner of the groove to the opening edge of the window hole may occur. Absent. Thereby, damage to the cylindrical fitting part in which the groove part and the window hole are formed is prevented.

In addition, when the cylindrical fitting portion cracks due to the action of external force, the crack is likely to occur starting from the leading edge of the cylindrical fitting portion. Since it becomes the form extended in the rib shape along the front-end edge of a cylindrical fitting part, there is no possibility that a crack may arise starting from the front-end edge of a cylindrical fitting part.

<Invention of Claim 2 >
The crack generation region that can occur when an external force is applied to the cylindrical fitting portion is a range from the leading edge of the cylindrical fitting portion to the opening edge of the window hole. However, since it extends in a rib shape over a region where cracks can occur, the occurrence of cracks can be reliably prevented.

<Invention of Claim 3 >
When the opening edge of the window hole includes a corner edge portion, when an external force is applied to the cylindrical fitting portion, stress concentrates on the corner edge portion, and there is a crack with the corner edge as a base end or a terminal end. There is a concern that this may occur in the cylindrical fitting portion. However, in the present invention, since a part of the reinforcing portion is formed so as to face the corner edge portion, when an external force acts on the cylindrical fitting portion, there is no risk of stress concentration on the corner edge portion, It is prevented that the crack which makes a corner edge part a base end or a terminal end generate | occur | produces in a cylindrical fitting part.

The top view of the 1st housing of Embodiment 1 Side view of first housing Sectional drawing of the 1st housing showing the state which a retainer exists in a temporary latching position Sectional drawing of the 1st housing showing the state which a retainer exists in this latching position Front view of second housing Sectional view of the second housing The front view of the 1st housing showing the state which fitted the hood part of the 2nd housing Cross-sectional view showing how the two housings are fitted in an inclined posture Sectional view showing how both housings are fitted in the correct posture without tilting Partial enlarged view of FIG.

<Embodiment 1>
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 10. The connector of this embodiment is configured to fit the first housing 10 and the second housing 70 using a lever 60.

  The first housing 10 is made of synthetic resin, and is assembled to the housing body 11, two types of female terminal fittings 30 </ b> A and 30 </ b> B attached to the housing body 11, an electric wire cover 40 assembled to the housing body 11, and the housing body 11. The retainer 50 and the lever 60 assembled to the electric wire cover 40 are provided.

  The housing body 11 is formed by integrally forming a terminal accommodating portion 12 having a block shape that is long in the thickness direction and a cylindrical fitting portion 13 that surrounds the terminal accommodating portion 12. The cylindrical fitting portion 13 is connected to the outer surface of the terminal accommodating portion 12 at the rear end thereof, and is a cylinder opened forward between the outer surface of the terminal accommodating portion 12 and the inner surface of the cylindrical fitting portion 13. A shaped fitting space 14 is formed. Two types of female terminal fittings 30A and 30B for power and signals are accommodated in the terminal accommodating portion 12. The power female terminal fittings 30A are arranged at the left and right ends, and the signal female terminal fittings 30B are arranged in a region between the power female terminal fittings 30A. A relatively large current flows through the power female terminal fitting 30A, whereas the value of the current flowing through the signal female terminal fitting 30B is smaller than that of the power female terminal fitting 30A.

  An electric wire cover 40 is attached to the housing body 11 so as to cover the back surface thereof. The electric wires 31 connected to the respective female terminal fittings 30A and 30B are led out from the back surface (rear surface) of the housing main body 11, bent sideways in the electric wire cover 40, and to the outside of the electric wire cover 40 and the rear surface of the housing main body 11. It is pulled out almost in parallel. On both upper and lower outer surfaces of the wire cover 40, a pair of support shafts 41 are formed with the axis line directed in the vertical direction (a direction perpendicular to the fitting direction of the housings 10 and 70).

  The terminal accommodating portion 12 is formed with an accommodating space 15 that opens to one of the left and right outer surfaces, and the female terminal fittings 30 </ b> A and 30 </ b> B face the accommodating space 15. In this accommodation space 15, the retainer 50 is assembled | attached so that it may be inserted from the side (direction orthogonal to the fitting direction of both the housings 10 and 70). The retainer 50 is engaged with the terminal accommodating portion 12 in any one of a temporary locking position (see FIG. 3) and a main locking position (see FIG. 4) having a deeper insertion depth than the temporary locking position. It is selectively held at the stop position. In the state where the retainer 50 is held at the temporary locking position, the insertion and removal of the female terminal fittings 30A and 30B are allowed to the terminal accommodating portion 12. In a state in which the retainer 50 is held at the main locking position, the female terminal fittings 30A and 30B housed in the terminal housing portion 12 are held in the retaining state by the retaining action of the retainer 50.

  The terminal accommodating portion 12 has a shape in which the front surface is recessed in a slit shape, and includes a region where the power female terminal fitting 30A is arranged and a region where the signal female terminal fitting 30B is arranged. A pair of left and right escape grooves 16 for partitioning are formed. The escape groove 16 is a groove for avoiding interference with a partition wall 75 to be described later, and extends as a whole in the vertical direction, and a substantially central position in the vertical direction is bent in a step shape. The upper and lower ends of the escape groove 16 are opened on the upper and lower surfaces of the terminal accommodating portion 12. The inner surface of the escape groove 16 is a first restriction surface 17. The terminal accommodating portion 12 is formed with interference avoiding grooves 18 that open from the escape groove 16 to the left and right outer surfaces of the terminal accommodating portion 12 in order to avoid interference with a reinforcing wall 77 described later.

  As shown in FIG. 10, a plurality of pairs of restricting protrusions 19 are formed on the first restricting surface 17. The restricting protrusion 19 has a form extending linearly in parallel with the fitting direction of the two housings 10 and 70, and protrudes from the first restricting surface 17 in a rib shape. The cross-sectional shape perpendicular to the extending direction (front-rear direction) of the restricting protrusion 19 is a triangle, and the protruding end edge of the restricting protrusion 19 has a sharp shape. Further, the protruding direction of the restricting protrusion 19 from the first restricting surface 17 is leftward or rightward. That is, the protruding direction of the restricting protrusion 19 is perpendicular to the fitting direction of the housings 10 and 70 and perpendicular to the rotation center (support shaft 41) of the lever 60 described later. The pair of restricting protrusions 19 are disposed so that the protruding directions from the first restricting surface 17 are opposite to each other in the left-right direction and are opposed to each other. In FIG. 10, the size of the restricting protrusion 19 is exaggerated for convenience. 3, 4, 7, 8, and 9, the illustration of the regulation protrusion 19 is omitted.

  A window hole 20 penetrating in the left-right direction (the assembly direction of the retainer 50 with respect to the terminal accommodating portion 12) is formed in the side wall portion corresponding to the accommodating space 15 in the peripheral wall constituting the cylindrical fitting portion 13. The retainer 50 is assembled to the terminal accommodating portion 12 through the window hole 20. As shown in FIG. 2, the opening edge of the window hole 20 includes a front edge 21 </ b> F that is parallel to the front end edge of the cylindrical fitting portion 13 (a direction perpendicular to the fitting direction of the housings 10 and 70), and the front edge 21F includes a pair of upper and lower side edges 21S continuous at right and left ends thereof, and a rear edge 21R connected to the rear ends of both side edges 21S. And the part where the up-and-down both ends of the front edge 21F and the front-end part of the side edge 21S continue at right angle is the corner edge part 21C.

  The tubular fitting portion 13 is formed with a plurality of groove portions 22 in the form of notching the inner surfaces of the left and right side wall portions. As shown in FIG. 7, three groove portions 22 are formed on each side wall portion so as to be parallel in the vertical direction. The groove portion 22 is linearly extended in parallel with the fitting direction (front-rear direction) of the housings 10 and 70, and the cross-sectional shape perpendicular to the length direction of the groove portion 22 is a square. The formation range in the front-rear direction of the groove portion 22 of the side wall portion in which the window hole 20 is formed in the left and right side wall portions is a region extending from the front end edge of the cylindrical fitting portion 13 to the front edge 21F of the window hole 20. Yes. In the vertical direction, the formation range of the three groove portions 22 is included in the formation range of the front edge 21 </ b> F of the window hole 20.

  The first housing 10 is different from the one shown in the figure in another type (not shown) in which the positions of the groove portions 22 and the number of the groove portions 22 in the vertical direction are different, but other forms are common. It is prepared. Thereby, the groove part 22 functions as a misfit prevention means for preventing the first housing 10 and the second housing 70 from being fitted in an unauthorized combination in cooperation with a protrusion 74 described later. .

  In the side wall portion where the window hole 20 is formed in the cylindrical fitting portion 13, the window hole 20 and the groove portion 22 are arranged close to each other, so that when an external force acts on the cylindrical fitting portion 13. There is a concern that a crack reaching the window hole 20 starting from the corner edge portion 21C of the groove portion 22 may occur. Therefore, as a means for preventing breakage of the cylindrical fitting portion 13, as shown in FIG. 2, a reinforcing portion 23 is formed on the side wall portion of the cylindrical fitting portion 13 where the window hole 20 is formed, thereby forming a cylindrical shape. The rigidity of the fitting portion 13 is increased. The reinforcing portion 23 has at least a part of the groove corresponding region 13A corresponding to the three groove portions 22 of the cylindrical fitting portion 13 and at least a part of the groove adjacent region 13B adjacent to the groove corresponding region 13A on the outer surface side. It is the form which raised in the shape of a rib.

  The reinforcing part 23 is configured by first to third rib-like protrusions 23A to 23C. The first rib-like protrusions 23A are linearly extended in the vertical direction (direction parallel to the direction in which the three groove portions 22 are arranged) along the front end edge (tip edge) of the cylindrical fitting portion 13. The formation range of the first rib-like protrusion 23 </ b> A in the vertical direction extends from a position further above the upper end groove portion 22 to a position further lower than the lower end groove portion 22. In other words, the first rib-like protrusions 23A are disposed over both the groove corresponding region 13A and the groove adjacent region 13B, and correspond to all the three groove portions 22.

  The second rib-like projections 23B are linearly extended from the front end edge (tip edge) of the cylindrical fitting portion 13 to the opening edge of the window hole 20, and are provided in a pair vertically symmetrically. ing. The front end portion of the second rib-like projection 23B is connected to the upper and lower end portions of the first rib-like projection 23A, and the rear end portion of the second rib-like projection 23B is located in the vicinity of the upper and lower end portions of the front edge 21F of the window hole 20. . In other words, the upper and lower second rib-like protrusions 23B are arranged such that the vertical interval gradually increases from the front end toward the rear end, and is oblique to the fitting direction of both the housings 10 and 70 and the groove portion 22. It extends to. That is, the second rib-like projections 23B are arranged along cracks that are expected to occur when an external force is applied to the cylindrical fitting portion 13 when the reinforcing portion 23 is not formed. Unlike the first rib-like protrusions 23A, the second rib-like protrusions 23B are disposed in the groove adjacent area 13B outside the groove corresponding area 13A.

  A pair of third rib-like protrusions 23 </ b> C are provided symmetrically so as to face the corner edge 21 </ b> C of the window hole 20. That is, the third rib-like protrusion 23C is bent at a substantially right angle along the corner edge 21C, and one end of the third rib-like protrusion 23C is connected to the rear end of the second rib-like protrusion 23B. . The other end of the third rib-like protrusion 23C is located slightly behind the front edge 21F. A part of the third rib-like protrusion 23C is located in the groove adjacent region 13B.

  On the outer surface of the cylindrical fitting portion 13, a pair of vertically symmetrical fourth rib-like projections 23 </ b> D are formed in a form that is connected to both upper and lower end portions of the reinforcing portion 23. The upper fourth rib-like protrusion 23D extends linearly upward (in the direction away from the window hole 20) from the other end of the upper third rib-like protrusion 23C, and the lower fourth rib-like protrusion 23D. Is linearly extended downward (in the direction away from the window hole 20) from the other end of the lower third rib-like protrusion 23C. The fourth rib-like protrusion 23D is located in a region that is out of the groove corresponding region 13A and the groove adjacent region 13B.

  The lever 60 is made of a synthetic resin, and is integrally formed with a pair of upper and lower arm portions 61 formed with cam grooves 63 and an operation portion 62 that connects the base end portions of both arm portions 61. Is. The lever 60 is supported to be rotatable between an initial position and a fitting position around the support shaft 41 by fitting the arm portion 61 to the support shaft 41 of the electric wire cover 40. The support shaft 41 is disposed at a substantially central position of the first housing 10 in the left-right direction.

  The second housing 70 is made of synthetic resin, and as shown in FIGS. 5 and 6, a terminal holding portion 71 and a hood portion 72 protruding forward from the terminal holding portion 71 are integrally formed. A pair of upper and lower cam followers 73 whose axial lines are directed in the vertical direction (parallel to the support shaft 41) are formed on the outer surface of the upper surface wall and the lower surface wall of the hood portion 72 so as to protrude coaxially. .

  On the left and right side walls of the hood portion 72, protrusions 74 are formed that protrude in a rib shape from the outer surface. Three protrusions 74 are formed on each side wall so as to be vertically aligned so as to correspond to the groove 22 of the first housing 10, and extend linearly in parallel with the fitting direction of the two housings 10, 70. ing. The second housing 70 is different from the one shown in the drawing in another type having a different shape (not shown), although the positions of the protrusions 74 and the number of the protrusions 74 in the vertical direction are different. ) Is prepared. Thereby, the protrusion 74 functions as an erroneous fitting preventing means for preventing the fitting of the first housing 10 and the second housing 70 of an unauthorized combination in cooperation with the groove portion 22 described above.

  The terminal holding portion 71 holds two types of male terminal fittings 80A and 80B for power and signals. The power male terminal fittings 80A are arranged at both left and right ends, and the signal male terminal fittings 80B are arranged in a region between the power male terminal fittings 80A. The tabs at the front ends of the male terminal fittings 80 </ b> A and 80 </ b> B protrude from the front surface of the terminal holding portion 71 and are collectively surrounded by the hood portion 72.

  The second housing 70 is configured to protrude forward from the front end surface of the terminal holding portion 71, and includes a region where the tab of the male terminal fitting 80A for power is arranged and a tab of the male terminal fitting 80B for signal. A pair of left and right partition walls 75 are formed that divide the area where it is disposed. When the housings 10 and 70 are fitted, the partition walls 75 enter the corresponding relief grooves 16. That is, the partition wall 75 has a shape and an arrangement corresponding to the escape groove 16.

  The partition wall 75 extends in the vertical direction as a whole, and a substantially central position in the vertical direction is bent in a step shape. The upper and lower ends of the partition wall 75 are connected to the upper surface wall and the lower surface wall of the hood portion 72. An outer surface of the partition wall 75 is a second restriction surface 76. When the partition wall 75 enters the escape groove 16, the first restricting surface 17 and the second restricting surface 76 face each other substantially in parallel, and the protruding end edge of the restricting projection 19 of the first restricting surface 17 has a second restricting surface. It abuts on the surface 76. Further, since the partition wall 75 is connected to the inner surface of the hood portion 72 via the left-right direction reinforcing wall 77, the partition wall 75 is in the left-right direction (the direction intersecting the fitting direction of both housings 10, 70). There is no risk of tilting or bending.

  Next, the operation of this embodiment will be described. When the housings 10 and 70 are fitted together, the lever 60 is held in the initial position in advance, and the inlet of the cam groove 63 is opened to the second housing 70 side. In this state, both the housings 10 and 70 are fitted shallowly while the hood portion 72 enters the fitting space 14, and the cam follower 73 enters the inlet of the cam groove 63 (see FIG. 9). At this time, if the first housing 10 and the second housing 70 are in an appropriate combination, the arrangement and the number of the groove portions 22 and the protrusions 74 match, so that the groove portions 22 and the protrusions 74 fit shallowly, and both the housings 10 , 70 shallow fitting is performed without hindrance. On the other hand, when the combination of the first housing 10 and the second housing 70 is illegal, the positions and the numbers of the groove portions 22 and the protrusions 74 do not match. Is done.

  When the lever 60 is turned to the fitting position side from the state where both housings 10 and 70 are shallowly fitted, a boosting effect is exerted by the cam action by the engagement of the cam groove 63 and the cam follower 73, and the lever 60 As the rotation proceeds, both housings 10 and 70 approach each other. When the lever 60 reaches the fitting position, the housings 10 and 70 are properly fitted, and the male terminal fittings 80A and 80B and the female terminal fittings 30A and 30B are connected to be conductive.

  Further, the position of the rotation center (support shaft 41) of the lever 60 and the engagement position of the cam groove 63 and the cam follower 73 are arranged so as to be separated from each other along the fitting direction of the housings 10 and 70. Therefore, in the process of the fitting of both housings 10 and 70, there is a concern that the postures of both housings 10 and 70 tilt to the left and right with the engagement position of the cam groove 63 and the cam follower 73 as a fulcrum. In that respect, in the present embodiment, the partition wall 75 enters the escape groove 16 in the process of fitting the two housings 10 and 70, the restricting protrusion 19 comes into sliding contact with the second restricting surface 76, and the restricting protrusion 19 that makes a pair is formed. The partition wall 75 is in contact with the left and right sides. By this abutting action, the inclination of the posture between the housings 10 and 70 is surely prevented.

  Further, the restricting protrusion 19 is formed in a rib shape so as to extend along the fitting direction of both the housings 10 and 70, and the protruding end edge of the restricting protrusion 19 has a sharp shape. 2 The contact area with the regulating surface 76 is kept small. Thereby, the fitting resistance between the outer surface (second restriction surface 76) of the partition wall 75 and the inner surface (first restriction surface 17) of the escape groove 16 is reduced. That is, according to this embodiment, it is possible to reliably prevent the inclination between the housings 10 and 70 while reducing the fitting resistance.

  The second housing 70 is provided with two types of male terminal fittings 80A and 80B having different current values when energized, and a partition wall 75 that partitions the two types of male terminal fittings 80A and 80B. The first housing 10 is formed with a relief groove 16 for allowing the partition wall 75 to enter. In the present embodiment, the outer surface of the partition wall 75 and the inner surface of the relief groove 16 are connected to the housing 10, Since it is effectively used as a restricting surface for restricting the inclination between 70, simplification of the shapes of the housings 10 and 70 is realized.

  In addition, the restricting protrusion 19 is disposed only on the first restricting surface 17 which is the inner surface of the escape groove 16 out of the first restricting surface 17 and the second restricting surface 76. Since the protrusion 19 is accommodated in the escape groove 16 and hardly receives interference from the outside, the restriction protrusion 19 can be protected from deformation and damage.

  As described above, in this embodiment, the cylindrical fitting portion 13 is adjacent to at least a part of the groove corresponding region 13A corresponding to the groove portion 22 of the cylindrical fitting portion 13 and the groove corresponding region 13A. A reinforcing portion 23 is formed in a form in which at least a part of the region 13B is raised to the outer surface side. Thus, by forming the reinforcement part 23 in the cylindrical fitting part 13, the groove corresponding | corresponding area | region 13B adjacent to the groove | channel corresponding | compatible area | region 13A and the groove corresponding | corresponding area | region 13A corresponding to the groove part 22 among the cylindrical fitting part 13 and The thickened portion includes a corner portion of the inner surface of the groove portion 22 in the cylindrical fitting portion 13. Therefore, even if an external force is applied to the cylindrical fitting portion 13, stress does not concentrate on the corners of the groove 22, and cracks from the tip of the corner of the groove 22 to the opening edge of the window hole 20 occur. There is no risk of it occurring. Thereby, damage to the cylindrical fitting part 13 in which the groove part 22 and the window hole 20 are formed is prevented.

  Further, when the cylindrical fitting portion 13 is cracked due to the action of an external force, the crack is likely to occur starting from the front end edge (tip edge) of the cylindrical fitting portion 13. Since the reinforcing part 23 has the first rib-like protrusion 23A in a form extending in a rib shape along the front end edge of the cylindrical fitting part 13, the leading edge of the cylindrical fitting part 13 is used as a starting end. There is no risk of cracking.

  Further, the crack generation region that can occur when an external force is applied to the cylindrical fitting portion 13 is a range from the leading edge of the cylindrical fitting portion 13 to the opening edge of the window hole 20. In the embodiment, since the second rib-like projections 23B constituting the reinforcing portion 23 extend in a rib shape over a region where cracks can occur, the occurrence of cracks can be reliably prevented.

  Further, the opening edge of the window hole 20 has a corner edge portion 21C located at the end portion of the front edge 21F close to the front end edge of the cylindrical fitting portion 13 in the opening edge. When the opening edge of the window hole 20 includes the corner edge portion 21C, when an external force is applied to the cylindrical fitting portion 13, stress concentrates on the corner edge portion 21C, and the corner edge portion 21C becomes the base end. Alternatively, there is a concern that a crack that terminates in the cylindrical fitting portion 13 may occur. In view of this point, in the present embodiment, the reinforcing portion 23 has a third rib-like protrusion 23C facing the corner edge portion 21C. This prevents stress from concentrating on the corner edge 21C when an external force is applied to the cylinder fitting portion 13, so that a crack with the corner edge 21C as a base end or terminal end is fitted into the tube. Occurrence in the part 13 is prevented.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
( 1 ) In the above embodiment, the reinforcing portion includes a rib-like portion (second rib-like projection) extending in the front-rear direction from the leading edge of the cylindrical fitting portion to the opening edge of the window hole. The part may have a form that does not have a part extending in the front-rear direction.
( 2 ) In the above embodiment, the reinforcing part has a portion (third rib-shaped protrusion) facing the corner edge of the opening edge of the window hole, but the reinforcing part is formed on the corner edge of the opening edge of the window hole. The form which does not have a part to face may be sufficient.
( 3 ) In the above embodiment, the reinforcing portion includes a rib-like portion extending in the front-rear direction over the entire region from the tip edge of the cylindrical fitting portion to the opening edge of the window hole. The formation range of the rib-shaped portion extending in the substantially front-rear direction may be limited to a region extending from the tip edge of the cylindrical fitting portion to a position near the opening edge of the window hole. It may be limited to the region from the position near the tip edge to the opening edge of the window hole, or limited to the region from the position near the tip edge of the cylindrical fitting portion to the position near the opening edge of the window hole. Also good.
( 4 ) Although the connector which fits both housings using a lever was demonstrated in the said embodiment, this invention is applicable also to the connector of the form which fits both housings without using a lever.
( 5 ) In the above embodiment, the number of groove portions formed in the same wall portion as the wall portion in which the window hole is formed among the wall portions constituting the cylindrical fitting portion is three. The number may be 2 or less, or 4 or more.
<Reference example>
(1) In the above embodiment, the reinforcing portion has a portion (first rib-like protrusion) extending in a rib shape along the leading edge of the cylindrical fitting portion, but the reinforcing portion is the tip of the cylindrical fitting portion. The form which does not have a part extended in rib shape along an edge may be sufficient.
(2) In the above-described embodiment, the portion of the reinforcing portion that is arranged along the distal end edge of the cylindrical fitting portion continuously extends in a rib shape so as to correspond to the plurality of groove portions. The portion of the reinforcing portion arranged along the tip edge of the cylindrical fitting portion may be dispersed and arranged at a plurality of locations so as to individually correspond to one groove portion.

In addition, the invention described in the means A to C for solving the problems concerned in the connector described in Patent Document 2 is not limited to the embodiment described with reference to the above description and drawings. Such an embodiment is also included in the technical scope of the invention described in the means A to C.
(1) In the above embodiment, the restriction protrusion is provided only on the second housing side where the lever is not provided. However, the restriction protrusion may be provided only on the first housing side where the lever is provided. You may provide in both the housing side and the 2nd housing side.
(2) In the above embodiment, the partition wall is provided in the first housing on the side where the lever is provided, and the escape groove is provided in the second housing. However, the invention described in the means A to C is the first housing. The present invention can also be applied to a connector in which a relief groove is provided in the second housing and a partition wall is provided in the second housing.
(3) In the above embodiment, the restriction protrusion is provided only on the inner surface of the escape groove. However, the restriction protrusion may be provided only on the outer surface of the partition wall, and provided on both the inner surface of the escape groove and the outer surface of the partition wall. Also good.
(4) In the said embodiment, although the partition wall and the escape groove | channel were used effectively as a control surface, you may arrange | position a control surface in parts other than a partition wall and a release groove | channel.
(5) In the above embodiment, two partition walls (relief grooves) are provided. However, the number of partition walls (relief grooves) may be one, or three or more.

DESCRIPTION OF SYMBOLS 10 ... 1st housing 12 ... Terminal accommodating part 13 ... Cylindrical fitting part 13A ... Groove corresponding | compatible area | region 13B ... Groove adjacent area | region 20 ... Window hole 22 ... Groove part 23 ... Reinforcement part 70 ... 2nd housing 71 ... Terminal holding part 72 ... Hood part 74 ... Projection

Claims (3)

A first housing in a form in which the terminal accommodating portion is surrounded by the cylindrical fitting portion;
A rectangular cross-section groove formed on the inner periphery of the tip of the cylindrical fitting portion;
A through-hole window hole for inserting a retainer formed in the tubular fitting portion and assembled in the terminal accommodating portion;
A second housing with a hood portion extending from the terminal holding portion;
A protrusion formed on the outer periphery of the front end of the hood,
The first housing and the second housing are fitted by causing the hood portion to enter the gap between the terminal accommodating portion and the cylindrical fitting portion, and causing the protrusion to enter the groove portion. Connector
In the cylindrical fitting portion, at least a part of the groove corresponding region corresponding to the groove and at least a part of the groove adjacent region adjacent to the groove corresponding region of the cylindrical fitting portion are raised to the outer surface side. A reinforcing part of the form is formed ,
The said reinforcement part has the part extended in rib shape along the front- end edge of the said cylindrical fitting part, The connector characterized by the above-mentioned. 2. The connector according to claim 1, wherein the reinforcing portion includes a portion extending in a rib shape over a region extending from a leading edge of the cylindrical fitting portion to an opening edge of the window hole . The opening edge of the window hole has a corner edge located at the end of the front edge near the tip edge of the cylindrical fitting portion of the opening edge,
The connector according to claim 1 , wherein the reinforcing portion has a portion facing the corner edge portion .

Images