JP2002270274A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a retainer transferred smoothly by eliminating hooking to a terminal fitting. SOLUTION: A pair of an elastic locking part 33 and a fixed locking part 35 are formed for each cavity 23 at a retainer 30. The elastic locking part has a width of about 1.5 times the cavity 23, and its tip edge 33A is made slanted backward from the left edge to the right edge looked at from the front. At a proper locking position, the right end of the tip edge 33A is located toward rear of the center part of a locked protrusion 15 of a female side terminal fitting 10, so that, at time of return to a temporary locking position, the right end of the tip edge 33A has the danger of getting hooked from inside on a right edge of the locked protrusion 15. But, a part protruding further forward than the right end of the tip edge 33A contacts a left edge of the locked protrusion 15, and is guided by a slanted tip edge 33A to let loose forward the female side terminal fitting with the movement of the retainer 30, which is how the right end of the tip edge 33A is prevented from hooking on the right edge of the locked protrusion 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a connector provided with a retainer.

[0002]

2. Description of the Related Art A connector disclosed in U.S. Pat. No. 5,044,991 is known as an example of a connector with a retainer. This is a connector housing provided with a plurality of cavities into which terminal fittings are inserted in a lateral direction, a retainer insertion opening opened across one cavity from one side of the connector housing, and a connector inserted into the retainer insertion opening. As shown in FIG. 20, the retainer 1 is provided with elastically deformable elastic locking portions 2 and fixed locking portions 3 which are alternately arranged.

[0003] When the retainer 1 is first held at the temporary locking position as shown in FIG.
Faces the cavity, and when the terminal fitting 4 is inserted into the cavity, the elastic locking portion 2 is allowed to bend while being bent and deformed. 4 is locked in a retaining state. Subsequently, when the retainer 1 is pushed in the direction of the arrow X in the same drawing and is pushed into the full locking position shown in FIG. 2B, the fixed locking portion 3 takes over the cavity instead, and this fixed locking is performed. The part 3 is locked to the terminal fitting 4 which has been properly inserted in a state where it cannot be removed. This is because the retainer side has the elastic locking part usually provided in the cavity,
The structure in the cavity can be simplified, which is particularly useful when molding a small connector housing.

[0004]

By the way, in the prior art, the locking edge of the elastic locking portion 2 is provided so as to project slightly forward (dimension t) from that of the fixed locking portion 3. ,
When the retainer 1 is shifted from the temporary locking position to the full locking position, an allowance is provided so that the fixed locking portion 3 is not caught. On the other hand, in this type of connector, an operation of removing the terminal fitting 4 from the cavity for maintenance or the like may be performed. In this case, the retainer 1 is pressed in the direction of the arrow Y in FIG. After returning to the temporary locking position of (1), the elastic locking portion 2 is forcibly bent and deformed by a jig to release the locking, and in this state, the terminal fitting 4 is pulled out.

However, since the locking edge of the elastic locking portion 2 is protruded forward as described above, the locking end of the elastic locking portion 2 is required while the retainer 1 is being returned to the temporary locking position. One end 2A of the edge is caught on the side edge of the terminal fitting 4, and the retainer 1
There was a risk that it would hinder the return. Further, for example, when the terminal fitting 4 is rectangular, when the retainer 1 is pushed from the temporary locking position to the final locking position, the other end 2 </ b> B of the locking end edge of the elastic locking portion 2 becomes the terminal fitting 4. There was also a risk of falling inside and getting caught on one side from inside. SUMMARY OF THE INVENTION The present invention has been completed based on the above circumstances, and an object of the present invention is to make it possible to smoothly move a retainer without getting caught on a terminal fitting.

[0006]

As means for achieving the above object, the invention of claim 1 is directed to a connector housing in which a plurality of cavities into which terminal fittings are inserted are provided in a horizontal direction, and a connector housing for the connector housing. A retainer insertion opening opened across each of the cavities from one side,
The retainer insertion opening is provided with a retainer that can be inserted in two stages of a temporary locking position and a full locking position, and the retainer is configured to bend the insertion of the terminal fitting into the cavity at the temporary locking position. A primary locking portion that allows deformation while allowing it to deform and restores and locks the terminal metal fitting that has been properly inserted, and a secondary locking part that locks the terminal metal fitting that has been properly inserted at the full locking position. In the connector provided with the locking portion, a feature is that a relief slope is formed at a corner of a locking edge of the primary locking portion of the retainer with respect to the terminal fitting. .

According to a second aspect of the present invention, in the first aspect, when a primary locking portion of the retainer is formed wider than the terminal fitting, and the retainer is at a temporary locking position, The primary locking portion is locked in a state where both side edges are located outside the both side surfaces of the terminal fitting, and when in the final locking position, only one side edge of the primary locking portion is the terminal. It is configured to be locked in a state of being located within the width of the metal fitting, so that the locking edge of the primary locking portion with respect to the terminal metal gradually retreats from the other side edge toward one side edge. The feature is that it is inclined to According to a third aspect of the present invention, in the first or second aspect, a relief slope is formed at a corner of a retaining edge of the retainer with respect to the terminal fitting in the secondary retaining portion. It is characterized by According to a fourth aspect of the present invention, in the first or third aspect, the slope is formed by chamfering.

[0008]

<Effects and Effects of the Invention><Invention of claim 1> Even if the locking edge of the primary locking portion is in such a positional relationship as to be hooked on the terminal fitting, a slope is formed at the corner of the locking edge. When the retainer moves, the side edge of the terminal fitting is released to the slope, and then acts so as to be guided on the locking edge along the same. It is prevented from being caught on metal fittings. Thus, the retainer can be smoothly shifted.

<Invention of Claim 2> When the retainer is returned from the final locking position to the temporary locking position, the corner of one side edge of the locking edge of the primary locking portion is formed on one side surface of the terminal fitting. Although there is a risk of being caught from the inside, since the locking edge is formed in an inclined posture gradually receding toward one side edge side,
In addition to the one side edge being retracted, as the retainer moves, the side opposite to the side where the terminal fitting may be caught is guided by the inclined locking edge and escapes forward. That is, the side surface which may be caught is also released forward, so that the corner on one side of the locking edge is prevented from being caught. <Invention of Claim 3> The corner of the locking edge in the secondary locking portion of the retainer is prevented from being caught on the terminal fitting. <Invention of claim 4> The relief slope is formed by chamfering a corner.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. <First Embodiment> A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, a female waterproof connector is illustrated. This connector is roughly shown in FIG. 1 as a female connector housing 20.
(Hereinafter simply referred to as a female housing), six female terminal fittings 10 accommodated therein, and these female terminal fittings 1
And a retainer 30 for locking the 0 in a retaining state.

The female terminal fitting 10 has a rectangular tube-shaped connecting portion 11 formed at the tip end thereof, and a contact piece for contacting a tab of a mating male terminal fitting (not shown) is accommodated therein. By caulking the barrel 12 provided on the rear end side,
Both the rubber stopper 13 and the end of the electric wire 14 are crimped.
On the upper surface of the connection portion 11, as shown in FIGS. 2 and 3,
The front end and the rear end are formed in a double wall shape over one third of the width from one side edge, and the rear edge portion of the outer wall of the front double wall is swollen outward and is punched out. Connection part 1
A locked projection 15 is formed at the center in the width direction of the whole 1. On the other hand, the rear edge (jaw portion) of the rear double wall is the locked stepped portion 16.

The female housing 20 is made of synthetic resin,
As shown in FIGS. 4 to 6, a hood portion 22 is formed so as to have a flat tower portion 21 and cover most of the front end side of the tower portion 21. In the tower portion 21, six cavities 23 shown in the figure, which are oriented in the front-rear direction, are formed side by side at a constant pitch in the left-right direction. In each cavity 23, the above-mentioned female terminal fitting 10 is provided rearward (FIG. 1).
A guide groove 24 is formed on the ceiling surface on the front end side of the cavity 23 so as to slide and guide the locked projection 15 of the female terminal fitting 10. A terminal insertion opening 25 is formed in the front wall so that a tab of a mating male terminal fitting can be inserted.

A retainer 30 can be mounted on the female housing 20. Therefore, a retainer insertion opening 27 is opened at a position near the front end of the tower 21. Specifically, the retainer insertion port 27 is provided in each cavity 2.
3 is formed in a penetrating shape across the left and right direction while communicating with the upper side, and the right side as viewed from the front is the entrance 27A. A window hole 28 which is slightly larger is opened on the right side surface of the hood portion 22 as viewed from the front.

The retainer 30 is made of synthetic resin.
As shown in FIG. 8 and FIG. 8, a main body plate 31 is provided across the entire width of the tower portion 21, and an operation portion 32 is formed at an end on the near side in the insertion direction. On the lower surface of the main body plate 31, six sets of elastic locking portions 33 and fixed locking portions 35 are formed in total, including the number of cavities 23.

The elastic locking portion 33 has a function of elastically locking the locked projection 15 of the female terminal fitting 10 described above.
From the substantially central portion in the depth direction on the lower surface of the main body plate 31,
It is formed in a cantilever shape protruding forward and obliquely downward, and the tip side can be bent upward and deformed. As shown in FIG. 10, the elastic locking portion 33 has a width approximately 1.5 times the lateral width of the front end side of the cavity 23. Then, the leading edge 33A of the elastic locking portion 33
Is formed as an inclined edge gradually receding from the left end to the right end when viewed from the front. In addition, a guide wall 34 is formed on the left side edge of the elastic locking portion 33 as viewed from the front, with its base side being slightly thicker.

The other fixed locking portion 35 has a function of locking to the locked step portion 16 of the female terminal fitting 10, and has a pair of elasticity on the lower end side on the lower surface of the main body plate 31. It is formed at a position shifted by a predetermined dimension to the right as viewed from the front of the locking portion 33. As shown in FIG. 13, the fixed locking portion 35 has a width dimension comparable to the width of the front end side of the cavity 23. In the fixed locking portion 35, chamfers 35A are formed on the left and right corners of the leading edge. The chamfer 35A forms a relief slope described in claim 3. In addition, a guide portion 36 is formed in a recess on a left side edge of the fixed locking portion 35 as viewed from the front.

A temporary lock recess 40 and a main lock recess 41 in front of the temporary lock recess 40 are formed on both front and rear edges of the main body plate 31 of the retainer 30 on the back side in the insertion direction. On the other hand, insertion grooves 43 for inserting the front and rear side edges of the main body plate 31 are provided on both front and rear surfaces at the upper end of the retainer insertion opening 27.
Is formed in the back side in the insertion direction, and a lock projection 44 that can be individually fitted into the temporary lock recess 40 and the main lock recess 41 is formed.

The retainer 30 is inserted into the retainer insertion opening 27, and as shown in FIG.
The position where the lock projection 44 is fitted at 0 is the temporary locking position of the retainer 30. In this temporary locking position, of the entire width of the elastic locking portion 33, approximately 2/3 of the width on the left side when viewed from the front. Project into the corresponding cavity 23, and the one fixed locking portion 35 is retracted to the right side when viewed from the front of the corresponding cavity 23. Further, as shown in FIG. 13, the place where the lock projection 44 is fitted into the main lock recess 41 on the front side is the final locking position of the retainer 30, and in this final locking position,
Of the total width of the elastic locking portion 33, approximately 1/3 of the width on the right side as viewed from the front remains in the corresponding cavity 23, and one fixed locking portion 35 has the full width of the corresponding cavity 23.
It is set to enter inside.

Next, the operation of the present embodiment will be described. First, the retainer 30 is inserted into the retainer insertion opening 27 of the tower 21 through the window hole 28 of the hood 22 from the entrance 27A side. As the insertion proceeds, as shown in FIG.
When the lock projection 44 is fitted into the temporary lock recess 40, the retainer 30 is temporarily held at the temporary locking position. At this time, as described above, the elastic locking portion 33 projects into the cavity 23 by approximately 2/3 of the width on the left side as viewed from the front,
In addition, the left end of the leading edge 33A protrudes slightly outward from the left side surface of the cavity 23 as viewed from the front. The fixed locking portion 35 is retracted to the right as viewed from the front of the cavity 23.

From this state, the female terminal fitting 10 is inserted into the corresponding cavity 23 from the rear. The female terminal fitting 10 has the locked projection 15 along the guide groove 24 on the ceiling, and the upper right corner of the connecting portion 11 viewed from the front is fitted to the corresponding guide portion 36 of the fixed locking portion 35. The left side of the locking projection 15 as viewed from the front is pushed straight along the inside of the guide wall 34 of the elastic locking portion 33. Further, the locked projection 15 is engaged with the elastic locking portion 33 on the way, and is pushed in while being deformed by bending. When the female terminal fitting 10 is pushed to the normal position where it abuts against the front wall, the elastic locking portion 33 is locked to the rear surface of the locked projection 15 while being restored and deformed, as shown in FIGS.

When the insertion of all the female terminal fittings 10 is completed, a finger or the like is inserted through the window hole 28, and the operating section 32 is further pushed in. As a result, the lock projection 44 is
0, the retainer 30 is pushed in, and the operation unit 3
When the lock 2 is pushed until it hits the right side surface of the tower 21, the lock recess 41 is fitted into the lock protrusion 44 instead, as shown in FIG. 13, and the retainer 30 is held at the lock position.

During this time, the elastic locking portion 33 moves to the left when the rear surface of the locked projection 15 of the female terminal fitting 10 is viewed from the front, and when the retainer 30 reaches the full locking position, as shown in FIG.
As shown in FIGS. 1 to 13, approximately one-third of the width on the right side as viewed from the front remains in the corresponding cavity 23 and the leading edge 3
The right end as viewed from the front of 3A is located on the rear side of the locked projection 15. The entire width of the fixed locking portion 35 protrudes into the cavity 23 and is locked over the entire width of the rear surface of the locked step portion 16 of the female terminal fitting 10. At this time, since the chamfer 35A is formed at the corner of the distal end edge of the fixed locking portion 35, the fixed locking portion 35 can move to the rear surface of the locked step 16 without the front edge being caught. As described above, the female terminal fitting 10 is double-stopped and locked by the elastic locking section 33 and the fixed locking section 35.

The female terminal fitting 10 is provided for maintenance or the like.
Is removed, the retainer 30 at the final locking position is returned to the temporary locking position by, for example, hooking a jig on the operation section 52. When the retainer 30 is in the final locking position, FIG.
As shown in the figure, the right end of the distal end edge 33A of the elastic locking portion 33 as viewed from the front is located behind the center of the locked projection 15 in the width direction. When the right side moves toward the temporary locking position, the right end of the distal end edge 33A of the elastic locking portion 33 may be caught on the right skirt 15A (see FIG. 3) of the locked projection 15 from the inside.

However, the distal edge 3 of the elastic locking portion 33
3A is formed in an inclined posture in which the right end side as viewed from the front is gradually receded, so that even if the female terminal fitting 10 is receded, a portion of the leading edge 33A protruding forward from the right end is a locked projection. 15, the retainer 30 moves toward the temporary locking position, and is guided by the inclined leading edge 33 </ b> A, so that the female terminal fitting 10 is released forward through the locked projection 15. That is, the right hem 15A of the locked projection 15 is also released forward, so that the right end of the distal end edge 33A of the elastic locking portion 33 is prevented from being caught.

When the retainer 30 is returned to the temporary locking position,
A jig is inserted from a jig insertion opening (not shown) opened at the upper right when viewed from the front of the terminal insertion opening 25 in the front wall of the tower portion 21, and is inserted into the right edge of the elastic locking portion 33. Of the female terminal fitting 10
Therefore, the female terminal fitting 10 can be pulled out of the cavity 23 by pulling the female terminal fitting 10 backward as it is.

As described above, according to this embodiment, when the retainer 30 is returned from the final locking position to the temporary locking position during maintenance or the like, the right end of the distal end edge 33A of the elastic locking portion 33 is covered. Although there is a possibility of being caught on the right hem 15A of the locking projection 15, the leading edge 33 of the elastic locking portion 33
A is formed as a sloping edge that gradually recedes on the right end side as viewed from the front, so that as the retainer 30 moves toward the temporary locking position, the sloping tip edge 33A is moved to the left of the locked projection 15. By pushing the skirt, the female terminal fitting 10, that is, the right skirt 15 A of the locked projection 15 is released forward, so that the right end of the distal end edge 33 A of the elastic locking portion 33 is prevented from being caught. Thus, the retainer 30 can be smoothly returned to the temporary locking position. In addition, since the chamfer 35A is also provided at the corner of the leading edge of the fixed locking portion 35, the retainer 30
Is moved from the temporary locking position to the final locking position, the fixed locking portion 35 is smoothly moved to the rear surface of the locked step portion 16 of the female terminal fitting 10 without catching the leading edge thereof. .

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. This second
In the embodiment, the shape of the retainer is changed. Hereinafter, differences from the first embodiment will be mainly described, and portions having the same functions as those of the first embodiment will be denoted by the same reference numerals as appropriate, and redundant description will be omitted. That is, the main body plate 51 of the retainer 50 is formed so that the depth direction is short, and on the back surface of the main body plate 51, the elastic locking portions 53 and the fixed locking portions 55 are alternately formed in a horizontal line. Both functions to be locked to the locked step 16 of the female terminal fitting 10.

More specifically, the leading edge 5 of the elastic locking portion 53
3A has a wide left end projected from the front, and the leading edge 53A is an inclined edge that gradually retracts from the left end to the right end as viewed from the front. The leading edge of one fixed locking portion 55 has a notch at the right end so as to allow the overhanging portion of the elastic locking portion 53 to escape, and has a chamfer 55A at both left and right ends.
Is given. The chamfer 55A forms a relief slope described in claim 3.

As shown in FIG. 18, the retainer 50 is where the lock projection 44 is fitted into the temporary lock recess 40 on the back side.
In this temporary locking position, the elastic locking portion 53 protrudes over the entire width of the cavity 23, and one fixed locking portion 55 is located on the right side when viewed from the front of the corresponding cavity 23. It is in a state of being evacuated. As shown in FIG. 19, a lock projection 44 is provided in the main lock recess 41 on the front side.
Is where the retainer 50 is fully locked, in which the fixed locking portion 55 protrudes into the cavity 23 at a position closer to the left end as viewed from the front. The elastic locking portion 53 escapes to the left as viewed from the front of the corresponding cavity 23. However, the protruding portion at the left end of the leading edge 53A is in a state of protruding slightly inside the right side surface of the cavity 23 on the left.

The operation of the second embodiment is as follows.
The retainer 50 is first held at the temporary locking position as shown in FIG. 18, and the elastic locking portion 53 protrudes into the cavity 23, while the fixed locking portion 55 is retracted to the right. When the female terminal fitting 10 is inserted into the cavity 23, the elastic locking portion 53 is pushed in while deforming the elastic locking portion 53. 16 on the rear surface. When the insertion of the female terminal fitting 10 is completed, the retainer 50 is pushed into the final locking position and held as shown in FIG. As a result, the fixed locking portion 55 protrudes into the cavity 23 instead of the elastic locking portion 53, and engages with a position on the rear surface of the locked step portion 16 of the female terminal fitting 10, which is closer to the left end side as viewed from the front. Stop. Here, the left corner of the leading edge of the fixed locking portion 55 has a chamfer 5
Since 5A is applied, the fixed locking portion 55 is moved to the rear surface of the locked step portion 16 without its leading edge being caught. Further, the protruding left end of the leading edge 53A of the moved elastic locking portion 53 is locked to the right end of the locked step 16 of the female terminal fitting 10 in the cavity 23 adjacent to the left, and the female terminal fitting 10 Is double locked.

The female terminal fitting 10 is maintained by maintenance or the like.
Is removed, the retainer 50 at the final locking position is returned toward the temporary locking position. When the retainer 50 is at the final locking position, as shown in FIG. 19, the right end of the distal end edge 53A of the elastic locking portion 53 as viewed from the front is removed to the left side of the corresponding cavity 23. When the elastic locking portion 53 moves to the right side toward the temporary locking position, the locked stepped portion 16 of the female terminal fitting 10 has a left edge as viewed from the front and an inner portion with a right edge. From each other.

However, the leading edge 5 of the elastic locking portion 53
3A is formed in an inclined posture in which the right end side as viewed from the front is gradually receded, so that the leading edge 53
Since the right end of A is retracted, it is prevented from being caught from the outside on the left edge of the locked stepped portion 16. Even if the female terminal fitting 10 is retracted during the subsequent movement, the leading end is The portion of the edge 53A that projects forward from the right end hits the left edge of the step 16 to be locked, and the retainer 50 is guided by the oblique leading edge 53A as the retainer 50 moves toward the temporary locking position. The female terminal fitting 10 is released forward through the stop 16, that is, the right edge of the locked step 16 is also released forward, so that the right end of the leading edge 53 </ b> A of the elastic locking portion 53 is caught. Is avoided. Also,
A chamfer 55A is also provided on the right corner of the leading edge of the fixed locking portion 55
Is fixed, the fixed locking portion 55 is
Is moved to the retracted position without being caught on the right side edge of the inside. Thus, the K movement can be smoothly performed between the temporary locking position and the full locking position of the retainer 50.

<Other Embodiments> The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) When the elastic locking portion is in the locking position, it fits within the width of the terminal fitting, and in the retracted position, it is completely separated from the side of the terminal fitting. There is a possibility that the elastic locking part may be caught on the locked part of the terminal fitting by both reciprocating movement between
In that case, similarly to the fixed locking portion, by performing chamfering (slope) on both the left and right corners of the distal end edge, it is possible to effectively avoid catching. (2) The present invention can be applied to a male connector and further to a non-waterproof connector.

[Brief description of the drawings]

FIG. 1 is an exploded longitudinal sectional view of a first embodiment of the present invention.

FIG. 2 is a partial plan view of a female terminal fitting.

FIG. 3 is a front view thereof.

FIG. 4 is a side view of the female housing.

FIG. 5 is a cross-sectional view thereof.

FIG. 6 is a sectional view taken along line AA of FIG. 4;

FIG. 7 is a front view of a retainer.

FIG. 8 is a bottom view thereof.

FIG. 9 is a cross-sectional view of the state where the retainer is at a temporary locking position.

FIG. 10 is a cross-sectional view as viewed from the bottom surface side.

11 is a sectional view taken along line BB of FIG. 10;

FIG. 12 is a cross-sectional view showing a state where the retainer is at a final locking position.

FIG. 13 is a cross-sectional view as viewed from the bottom surface side.

14 is a sectional view taken along line CC of FIG.

FIG. 15 is a front view of a retainer according to a second embodiment of the present invention.

FIG. 16 is a bottom view thereof.

17 is a sectional view taken along line DD of FIG.

FIG. 18 is a cross-sectional view of the retainer at a temporary locking position as viewed from the bottom surface side.

FIG. 19 is a cross-sectional view of the retainer at the final locking position as viewed from the bottom surface side.

FIG. 20 is a perspective view of a conventional retainer.

FIG. 21 is an operation explanatory view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Female terminal metal fitting 15 ... Locked projection 15A ... Right hem (of locked projection 15) 16 ... Locked step 20 ... Female housing 21 ... Tower 23 ... Cavity 27 ... Retainer insertion opening 30 ... Retainer 33: elastic locking portion (primary locking portion) 33A: distal edge (locking edge) (of elastic locking portion 33) 35: fixed locking portion (secondary locking portion) 35A: chamfer 40: temporary lock Concave part 41 ... Lock concave part 44 ... Lock protrusion 50 ... Retainer 53 ... Elastic locking part (primary locking part) 53A ... Tip edge (locking edge) of (elastic locking part 53) 55 ... Fixed locking part ( 55A ... chamfer

Continuation of the front page (72) Inventor Ryotaro Ishikawa 1-14 Nishisuehirocho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd. F-term (reference) 5E087 EE14 GG13 GG26 RR08 RR25 RR36

Claims (4)

[Claims] 1. A connector housing having a plurality of cavities into which terminal fittings are inserted in a lateral direction, a retainer insertion opening opened across one of the cavities from one side of the connector housing, and A retainer that can be inserted in two stages of a temporary locking position and a full locking position, wherein the retainer allows the terminal fitting to be inserted into the cavity in the temporary locking position while flexing and deforming. ,
And a primary locking portion for restoring and deforming the terminal fitting that has been properly inserted and locking it, and a secondary locking portion for locking and locking the terminal fitting that has been properly inserted at the final locking position. The connector according to claim 1, wherein a relief slope is formed at a corner of a locking edge of the primary locking portion of the retainer with respect to the terminal fitting. 2. A primary locking portion of the retainer is formed wider than the terminal fitting, and when the retainer is at a temporary locking position, both side edges of the primary locking portion are on both side surfaces of the terminal fitting. So that when it is in the final locking position, only one side edge of the primary locking portion is locked in a position within the width of the terminal fitting. The locking edge of the primary locking portion with respect to the terminal fitting is inclined so as to gradually recede from the other side edge toward one side edge. Connectors. 3. An escape slope is formed at a corner of a locking edge of the retainer with respect to the terminal fitting in a secondary locking portion of the retainer. Connectors. 4. The connector according to claim 1, wherein the slope is formed by chamfering.