JP2002117928A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent entry of a tab into the side of mold drawing hole. SOLUTION: A resin lance 26 lockable to a female terminal fitting is provided inside a cavity. An insertion hole 22 allowing insertion of the tab 36 from the front is opened in a front wall of the cavity. A mold drawing hole 32 hugging an outline of the resin lance 26 is formed in a lower part 24a of a hole rim part 24 of the insertion hole 22. A locking protrusion 28 provided protrudedly from a base part 27 of the resin lance 26 is formed in a trapezoid as seen from the front, and following this, a regulating part 33 provided in a side portion of a communicating part between the insertion hole 22 and the mold drawing hole 32 of the lower part 24a of the hole rim part 24 of the insertion hole 22 is formed protrudedly inward as it nears a circumferential face 22a of the insertion hole 22. An area abutted by the tab 36 inserted in the insertion hole 22 is larger by a size t of an upper edge of an overhanging part 34.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a connector provided with a resin lance.

[0002]

2. Description of the Related Art Conventionally, a resin lance is integrally formed on a female connector housing.
No. 1116. This female connector
As shown in FIGS. 12 and 13, as the female terminal fitting 3 is inserted into the cavity 2 formed in the housing 1 from behind, the resin lance 4 formed on the lower surface of the cavity 2 is once bent and deformed. After that, when the female terminal fitting 3 reaches a regular depth, the resin lance 4 returns and is locked to the female terminal fitting 3. In addition, an insertion hole 5 is formed in the front wall of the cavity 2 so that a tab of a male terminal fitting on the other side can enter from the front, and an entrance edge of the insertion hole 5 guides the entry operation of the tab. Guide surface 6 is formed.

The resin lance 4 has a structure having a locking projection 4b projecting into the cavity 2 from a cantilevered base 4a formed along the lower surface of the cavity 2.
In front of the resin lance 4, a die hole 7 is formed by cutting a die for forming the resin lance 4 when the housing 1 is formed. The die-cut hole 7 is formed by partially cutting off the lower wall 2 a of the cavity 2 and the lower part 5 a of the hole edge of the insertion hole 5.

[0004]

In order to reduce the size of the female connector having the above structure, the width of the cavity 2 is reduced and a small female terminal fitting 3 is used. Accordingly, the width of the insertion hole 5 and the width of the resin lance 4 are reduced, but the width of the resin lance 4 is at least required to maintain the function of retaining and retaining the female terminal fitting 3. There is a need. For this reason, the width dimensions of the resin lance 4 and the mold release hole 7 are fixed,
When the width dimension of the insertion hole 5 is reduced, the insertion hole 5
The dimension of the lower part 5a of the edge of the hole is reduced. And
When the difference between the width dimension of the insertion hole 5 and the width dimension of the mold release hole 7 is minimized, the tab inserted into the insertion hole 5 easily enters the lower mold release hole 7, and There is a possibility that the front end of the female terminal fitting 3 or the base 4a of the resin lance 4 may be hit.

On the other hand, in the male connector having the same cavity structure as the female connector, the tab of the male terminal fitting inserted into the cavity is inserted into the insertion hole, and the tab is brought into contact with the peripheral surface of the insertion hole. This restricts the movement of the tab. However, if the width dimension of the lower portion of the hole edge of the insertion hole is reduced, the tab cannot be reliably supported, and for example, when foreign matter hits the tab, the tab may enter the die release hole side. Was. The present invention has been completed based on the above circumstances, and has an object to prevent a tab from entering a die-cutting hole side.

[0006]

As a means for achieving the above object, according to the first aspect of the present invention, there is provided a connector housing having a cavity into which a terminal fitting can be inserted from behind,
The cavity is formed by opening forward,
An insertion hole through which a tab can be inserted, and a resin lance which protrudes into the cavity and is returned after being elastically bent by the inserted terminal fitting and locked by the terminal fitting. Along with the die for molding the resin lance being die-cut forward, a die-cutting hole is formed at the edge of the insertion hole, and the die-cutting hole communicates with the insertion hole. The side portion of the communicating portion between the insertion hole and the die-cutting hole among the hole edges of the insertion hole can restrict the tab inserted into the insertion hole from entering the die-detaching hole side. In what is a regulatory department,
A portion of the resin lance that overlaps the edge of the insertion hole is formed so as to decrease in width from the die release hole side to the insertion hole side, and the restricting portion is provided around the insertion hole. It is characterized in that it is formed so as to protrude inward as it approaches the surface.

According to a second aspect of the present invention, the tab is provided on a counterpart terminal fitting connected to the terminal fitting,
It is characterized in that it can be inserted into the insertion hole from the front.

According to a third aspect of the present invention, in the first or second aspect, the tab is provided integrally with the terminal fitting, and the terminal fitting is inserted into the cavity. Accordingly, it is inserted into the insertion hole, and its periphery is surrounded by the restricting portion, so that movement is restricted.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the resin lance is provided with a cantilevered base disposed outside the cavity, and a base extending from the base to the inside of the cavity. And a locking portion that protrudes to the terminal fitting and is locked to the terminal fitting. Only the locking portion is formed so as to become narrower in width toward the protruding end.

[0010]

According to the first aspect of the present invention, the portion of the resin lance that overlaps with the edge of the insertion hole is formed in a shape that becomes narrower in width from the die release hole side toward the insertion hole side. Accordingly, the die for molding the resin lance can be formed to have a narrow tip end side in accordance with the mold. Therefore, the regulation part provided on the side of the die-cutting hole among the hole edges of the insertion hole is formed so as to protrude inward as approaching the peripheral surface of the insertion hole. Thus, the contact area of the restricting portion with the tab is widened, so that it is possible to prevent the tab from entering the die hole.

<Invention of Claim 2> Since the opening of the die-cutting hole facing the insertion hole is narrowed by the regulating portion projecting inward, the tab of the mating terminal fitting inserted from the front into the insertion hole is die-cut. It is possible to prevent entry into the hole side, and it is possible to prevent the tab from interfering with a terminal fitting or the like in the cavity.

<Invention of Claim 3> Since the region for holding the tab to be inserted into the insertion hole is enlarged by the regulating portion protruding inward, the tab can be prevented from loosening as much as possible.

<Invention of Claim 4> When the terminal fitting is pulled backward while the locking portion of the resin lance is locked to the terminal fitting, the shearing force acting on the resin lance is reduced by the locking portion and the base. Act on the connecting part of Only the locking portion of the resin lance is formed to be narrow, so that the cross-sectional area of the connecting portion receiving the shearing force can be kept large enough to maintain the locking force of the resin lance. Can be.

[0014]

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 the present embodiment, a female connector will be described. In this female connector, as shown in FIG. 1, the female terminal fitting 10 is accommodated in a cavity 21 provided in a female connector housing 20 made of synthetic resin (hereinafter simply referred to as a female housing 20). In the cavity 21, a resin lance 26 is integrally formed. In the description below, the left side in each drawing except for FIG. 3 is referred to as the front, and the right side is referred to as the rear.

First, the female terminal fitting 10 will be described. As shown in FIG. 1, the female terminal fitting 10 is formed by press-molding a metal plate, and has a box portion 11 that is conductively connected to the male terminal fitting 35 on the other side, and a barrel that is crimp-connected to the electric wire W. A portion 12 is provided on the front and rear. The box portion 11 is formed to open frontward and rearward, and a tongue piece extending forward from an upper plate in the drawing is folded inward to form a cantilevered elastic contact piece 13. This elastic contact piece 13
It is formed in a chevron shape that can be elastically deformed upward, and its vertex is beaten out, so that the contact portion 14
Are bulged downward. The tab 36 of the male terminal fitting 35 inserted into the box portion 11 from the front is elastically contacted with the contact portion 14 while bending the elastic contact piece 13. The illustrated lower plate of the box portion 11 is formed double, and the inner plate is formed with the receiving portion 15 projecting toward the elastic contact piece 13 side, and the tab 36 inserted into the box portion 11 is elastic. A pressure is applied between the contact piece 13 and the receiving portion 15. At the lower rear end of the box 11,
A jaw portion 16 is formed, and a resin lance 26 in the cavity 21 can be locked to the jaw portion 16.

The barrel portion 12 includes a wire barrel 12a that is caulked to a core wire that is exposed by cutting off a covering of an end of the electric wire W, and an insulator that is caulked together with a rubber stopper 17 fitted to the covering of the electric wire W. Ration barrel 1
2b is provided before and after. On the rubber stopper 17, three lips 17a are formed side by side.
The inside of the cavity 21 is waterproofed by bringing the 7 a into close contact with the inner peripheral surface of the cavity 21. Further, a pair of stabilizers 18 are formed to protrude downward from the side wall between the box portion 11 and the wire barrel 12a.

Next, the female housing 20 will be described.
In the female housing 20, as shown in FIGS.
A cavity 21 into which the female terminal fitting 10 can be inserted from the rear is provided. This cavity 21 corresponds to FIGS.
As shown in the figure, the front part 21a (about ／ of the total length of the cavity 21) is formed in a square shape along the box part 11 of the female terminal fitting 10, while the rear part 21b (about １ ／ of the total length of the cavity 21). Is formed in a circular shape so that the lip 17a of the rubber stopper 17 is in close contact with the entire circumference. These front two
A gentle tapered surface for guiding the insertion operation of the female terminal fitting 10 is formed between 1a and the rear portion 21b.

The front wall of the cavity 21 is formed with an opening 22 through which a tab 36 of the male terminal fitting 35 can be inserted from the front. The insertion hole 22 is arranged at the center of the cavity 21 in the width direction, and is arranged at a position slightly shifted downward from the center of the cavity 21 in the height direction. Peripheral surface 22a of insertion hole 22
As shown in FIG. 3, is formed in a square shape according to the shape of the tab 36 to be inserted, the front side of the periphery thereof,
A guide surface 23 that expands in a trumpet shape toward the front end side is formed. The male terminal fitting 3 is provided on the guide surface 23 from the front.
The fifth tab 36 can be brought into contact, so that the tab 36 can be guided into the insertion hole 22.
The outer width of the guide surface 23 is set to be larger than the width of the cavity 21 as shown in FIG. 2, and the lower end of the guide surface 23 is formed as shown in FIG.
1 is aligned with the lower surface.

As shown in FIGS. 1 and 2, a pair of support walls 25 for supporting the female terminal fitting 10 inserted into the cavity 21 and a female terminal are provided on the lower surface side of the front portion 21a of the cavity 21. A resin lance 26 for retaining and holding the metal fitting 10 is formed at the front and rear. Both support walls 2
Numeral 5 is disposed at a lateral position with an interval (a die-cut hole 32 described later) in the center in the width direction of the cavity 21, and a lower portion 24 a of the hole edge 24 of the insertion hole 22, a side wall of the cavity 21, and It is connected to. The resin lance 26 is disposed between the two support walls 25 at the center in the width direction of the cavity 21, and has a cantilevered base 27 and a locking projection formed to project into the cavity 21 from the upper surface of the base 27. 28.

The base 27 is provided at the front 21 a of the cavity 21.
The front end of the cavity 21 extends substantially to the center of the front portion 21a of the cavity 21 in the length direction. A flexible space 29 is formed below the base 27 to allow elastic deformation of the base 27. The bending space 29 is formed to open forward. The upper surface of the base 27 is located on the front support wall 2.
5 is formed flush with the upper surface (= lower surface of cavity 21) of female terminal fitting 10 inserted into cavity 21.
Box portion 11 can be slidably contacted. The front end of the base 27 is formed by a jig for forcibly bending the resin lance 26 from the front by forming the height position of the upper surface to be lower in a stepped manner and the front end surface being formed in a tapered shape. The operation unit 30 is operable.

The locking projection 28 is disposed over a region from a position forward of the bending base end of the base portion 27 to a position immediately after the operation portion 30. The locking projection 28 is formed so as to be bulkier toward the front side, and the front end thereof is formed of the resin lance 2.
6 is a protruding end into the cavity 21.
The height position of the protruding end of the locking projection 28 is higher than the lower surface of the peripheral surface 22 a of the insertion hole 22.
The front end face of the locking projection 28 is formed in an overhang shape and is locked to the jaw 16 of the female terminal fitting 10. The upper surface of the locking projection 28 is formed as a front-inclined inclined surface and the rear end thereof is connected to the upper surface of the base 27, and the box portion 11 of the female terminal fitting 10 inserted into the cavity 21 is in sliding contact. The base 27 is gradually bent with the insertion operation of the female terminal fitting 10.

As shown in FIG. 3, the base portion 27 of the resin lance 26 is formed in a square shape as viewed from the front, and the locking projection 28 is formed in a trapezoidal shape whose width decreases toward the protruding end. I have. Accordingly, the left and right side surfaces 28 a of the locking projection 28 are formed as inclined surfaces inclined with respect to the side surface 27 a of the base 27. The cross-sectional area of the connecting portion 31 between the locking projection 28 and the base 27 is, as shown in FIGS.
It is the size multiplied by the length dimension. The connecting portion 31 receives a shearing force acting when the female terminal fitting 10 locked to the locking projection 28 is pulled backward.

When the female housing 20 is molded, a pair of front and rear molding dies (not shown) are set therein and the interior thereof is filled with a molten resin. The female housing 20, which is a molded product, is taken out by opening the mold along the front-rear direction. A molding pin for molding the cavity 21, the resin lance 26, and the like in the female housing 20 is provided on the molding surface of the mold so as to project therethrough. The space is formed open in the front-rear direction. Accordingly, in the support wall 25 disposed in front of the resin lance 26 and the lower portion 24 a of the hole edge 24 of the insertion hole 22, a molding hole 32 for a molding pin for the resin lance 26 is formed.

As shown in FIG.
The resin lance 26 is formed along the outer shape viewed from the front, and the upper end thereof is formed to communicate with the insertion hole 22. Of the lower portion 24 a of the hole edge 24 of the insertion hole 22, both side portions of the communicating portion between the die-cutting hole 32 and the insertion hole 22 are formed as regulating portions 33 having the lower surface of the peripheral surface 22 a of the insertion hole 22. . A tab 36 inserted into the insertion hole 22 can be brought into contact with the restricting portion 33, so that the tab 36 is restricted from entering the die release hole 32. The portion of the regulating portion 33 having the peripheral surface of the mold release hole 32 is
Lower end position of guide surface 23 (= lower position of cavity 21)
, And is formed so as to gradually protrude inward as it approaches the peripheral surface 22 a of the insertion hole 22, and this portion serves as a protruding portion 34 of the regulating portion 33. Die-cut hole 32
Is formed as an inclined surface having the same inclination angle as both side surfaces 28a of the locking projection 28. Overhang 34
Is formed in a right-angled triangle having an inclined surface which is a peripheral surface of the die-cutting hole 32 as a hypotenuse.
Is larger only by the dimension t on the upper side of the overhang 34 in the drawing. In other words, the punching holes 32
Among them, the portion where the height position overlaps with the locking projection 28 of the resin lance 26 is formed so that the width dimension becomes smaller toward the upper side, and the frontage of the die-cutting hole 32 facing the insertion hole 22 is formed to be the narrowest. ing. The above-described guide surface 23 is
4 is also formed at the leading edge.

The present embodiment has the above-described structure, and its operation will be described below. As shown in FIG. 1, the female terminal fitting 10 is inserted into the cavity 21 of the female housing 20 from the rear. As the box portion 11 comes into contact with the locking projection 28, the base 27 of the resin lance 26 is elastically deformed downward and enters the bending space 29, and the locking projection 28 is once out of the cavity 21. Will be evacuated. During this insertion,
The insertion of the female terminal fitting 10 is guided by the stabilizer 18 passing through the notch on the side of the resin lance 26.

When the insertion depth of the female terminal fitting 10 reaches a regular depth, as shown in FIG.
Is elastically restored, and the locking projection 28 that has entered the cavity 21 is locked to the jaw portion 16. As a result, the female terminal fitting 10 is held in the cavity 21 in a state in which it is prevented from falling off. The returning operation of the resin lance 26 is performed by the locking projection 28.
Are smoothly formed by the inclined surfaces on both side surfaces 28a (see FIG. 3). The lip 1 of the rubber stopper 17
7 a is tightly attached to the inner peripheral surface of the rear portion 21 b of the cavity 21, whereby the inside of the cavity 21 is waterproofed.

Then, as the female connector is fitted to the mating male connector (not shown), the tab 36 of the male terminal fitting 35 of the male connector is inserted into the insertion hole 22 and the cavity 21 is inserted. And is conductively connected to the female terminal fitting 10. At this time, for example, when the fitting posture of the two connectors is relatively inclined, as shown in FIGS.
May hit the restricting portion 33 and the overhanging portion 34 which are the lower portion 24a. However, the regulating portion 33 is
Is formed so as to protrude inward as it approaches the peripheral surface 22a of the insertion hole 22, so that the guide surface 23, which is the contact region with the tab 36, and the region of the lower surface of the peripheral surface 22a of the insertion hole 22 are reduced. Since it is enlarged, it is possible to prevent the tab 36 from entering the die release hole 32 side. In particular, when the size of the female connector is reduced, if the width of the cavity 21 is reduced without changing the width of the resin lance 26, the regulating portion 33 is reduced accordingly. As shown in the drawing, at least the dimension t of the upper side of the overhang portion 34 can secure a contact area with the tab 36, so that the female connector can be downsized.

On the other hand, when a pulling force acts on the electric wire W in a state where the female terminal fitting 10 is retained and retained by the resin lance 26, as shown in FIG.
It is received by the connecting portion 31 of the locking projection 28 and the base 27 of the resin lance 26. The cross-sectional area of this connecting portion 31 is such that the locking projection 28 as shown in the prior art is
7 has a size similar to that of a square formed continuously with 7, and the locking force of the resin lance 26 can be sufficiently obtained.

As described above, according to the present embodiment,
By forming the projecting portion 34 of the regulating portion 33 so as to project inward, the contact area with the tab 36 inserted into the insertion hole 22 can be enlarged.
It is possible to prevent the situation of entering the second side.

<Second Embodiment> A second embodiment of the present invention will be described with reference to FIGS. In this embodiment,
The male connector is shown, and as shown in FIG. 7, a male terminal fitting 40 having a tab 43 can be accommodated in a male connector housing 50 (hereinafter simply referred to as male housing 50) made of synthetic resin. Hereinafter, the right side in each drawing except for FIG. 10 will be referred to as the front, and the left side will be referred to as the rear.

As shown in FIGS. 7 and 8, the male terminal fitting 40 is formed by press-forming a metal plate.
A front and rear box portion 41 and a barrel portion 42 are provided, and a tab 43 is provided to protrude forward from a front end of the box portion 41. The tab 43 is arranged substantially at the center of the box portion 41 in the height direction, and is formed by double-folding a metal plate, and the peripheral edge of the tip is formed in a tapered shape. A tapered surface 4 is formed on the upper side of the front end of the box portion 41.
On the other hand, on the lower side, an abutting projection 41b is provided to protrude forward, and can abut on an overhang 63 described later. At the lower rear end of the box portion 41, a jaw portion 44 in which a resin lance 56 in the cavity 53 can be locked.
Is provided. The structure of the barrel 42 and the electric wire W
The connection structure with the rubber plug 45 is the same as that of the female terminal fitting 10 described in the first embodiment, and therefore, the duplicated description thereof will be omitted.

The male housing 50 is, as shown in FIG.
A terminal accommodating portion 51 having a cavity 53 into which the male terminal fitting 40 can be inserted from the rear, and a hood portion 52 protruding forward from a front end of the terminal accommodating portion 51 are provided. The cavity 53 has a front portion 53a formed in a square shape in conformity with the box portion 41 of the male terminal fitting 40, and a rear portion 53b formed in a circular shape so that the rubber stopper 45 can be in close contact therewith. An insertion hole 54 through which the tab 43 can be inserted is formed in the front wall of the cavity 53. The peripheral surface 54a of the insertion hole 54 is
As shown in FIG. 0, the tab 43 is formed in a quadrangular shape, and can be held in a state in which the tab 43 is restricted in play by being abutted while surrounding the peripheral surface of the inserted tab 43. As shown in FIG. 7 and FIG.
A tapered guide surface 55 is formed on the rear side of the upper surface and the both side surfaces of “a”. With this guiding surface 55,
When the male terminal fitting 40 is inserted into the cavity 53, the operation of inserting the tab 43 into the insertion hole 54 can be guided. The male terminal fitting 40 is provided in the hood portion 52.
Are arranged in a state where the tabs 43 protrude (see FIG. 11). In addition, the resin lance 56, the bending space 5
9, since the structures of the support wall 60, the punching hole 61, the restricting portion 62, and the overhanging portion 63 are almost the same as those described in the first embodiment, the following mainly describes the different portions. The description of other overlapping parts will be omitted.

As shown in FIGS. 7 and 9, the restricting portion 62, which is provided at the hole edge 54b of the insertion hole 54 and has the lower surface of the peripheral surface 54a,
Is arranged over the length area up to the rear end position,
The base portion of the tab 43 inserted into the insertion hole 54 is supported, and at the same time, the movement of the tab 43 toward the die-cutting hole 61 can be restricted (see FIG. 11). The upper edge of the rear end of the regulating portion 62 is formed in a round shape so that the tab 43 can be guided to the insertion hole 54. The contact protrusion 41b of the male terminal fitting 40 comes into contact with the rear end of the protruding portion 63 of the restricting portion 62.

The present embodiment has the above-described structure, and its operation will be described below. When the male terminal fitting 40 is inserted into the cavity 53 as shown in FIG.
1 is brought into contact with the locking projection 58 of the resin lance 56 so that the base 57 is bent and the tab 43 is
Is guided through the insertion hole 54, and protrudes into the front hood portion 52.

When the male terminal fitting 40 is inserted to the normal depth, as shown in FIG. 11, the base 57 of the resin lance 56 is resiliently restored, and the locking projection 58 is locked to the jaw portion 44, so that the male terminal is fixed. The metal fitting 40 is held in the cavity 53 in a retaining state. At this time, since the tab 43 is inserted into the insertion hole 54 and the root portion is in contact with the peripheral surface 54 a of the insertion hole 54, for example, foreign matter enters the hood portion 52 and hits the tab 43. In this case, the movement of the tab 43 is restricted. On the lower surface of the peripheral surface 54 a of the insertion hole 54, the contact area with the tab 43 is enlarged by the dimension t ′ of the upper side of the overhanging portion 63, so that the tab 43 is guided and the mold release hole 61 side Is prevented from entering. In particular, when the size of the male connector is reduced, the contact area can be secured at least by the dimension t 'of the upper side of the overhang portion 63 even if the restricting portion 62 is reduced.
It can also respond to downsizing of male connectors.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in 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) In the above-described embodiment, the case where the locking projection of the resin lance has a trapezoidal shape and the die-cutting hole is formed along the outer shape is shown. Only a portion overlapping the vicinity of the lower surface may be formed in a stepped shape with a reduced width, and a die-cut hole may be formed along the outer shape. In the resin lance of this shape, the cross-sectional area of the connecting portion between the base and the locking projection is the same as that of the first and second embodiments, so that the locking force of the resin lance can be sufficiently maintained.

(2) As other forms of the resin lance, for example, those in which the locking projection is formed in a rectangular shape whose width is smaller than the base portion, and those in which the outer shape of the entire resin lance is formed in a trapezoidal shape are also used in the present invention. include.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a female connector according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of the female housing.

FIG. 3 is an enlarged front view of a cavity portion in the female housing.

FIG. 4 is a side sectional view showing a state where the female terminal fitting is inserted into the cavity.

FIG. 5 is a side sectional view showing a case where the tab is about to be inserted into the insertion hole in an inclined posture;

FIG. 6 is a cross-sectional plan view showing a case where the tab is about to be inserted into the insertion hole in an inclined posture;

FIG. 7 is a side sectional view of a male connector according to a second embodiment of the present invention.

FIG. 8 is a bottom view of the male terminal fitting.

FIG. 9 is a plan sectional view of a male housing.

FIG. 10 is an enlarged front view of a cavity portion in the male housing.

FIG. 11 is a sectional side view showing a state where the male terminal fitting is inserted into the cavity.

FIG. 12 is a side sectional view of a conventional example.

FIG. 13 is a plan sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Female terminal fitting (terminal fitting) 20 ... Female housing (connector housing) 21 ... Cavity 22 ... Insertion hole 24 ... Hole edge 26 ... Resin lance 27 ... Base 28 ... Locking protrusion (locking part) 32 ... Die release Hole 33: regulating portion 40: male terminal fitting (terminal fitting) 43: tab 50: male housing (connector housing) 53: cavity 54: insertion hole 54b: hole edge 56: resin lance 57: base 58: locking projection ( Locking portion) 61: die-cutting hole 62: regulating portion

Claims (4)

[Claims] The connector housing has a cavity into which a terminal fitting can be inserted from the rear, and a cavity formed by opening the cavity forward.
An insertion hole through which a tab can be inserted, and a resin lance which protrudes into the cavity and is returned after being elastically bent by the inserted terminal fitting and locked to the terminal fitting. A die-cutting hole is formed at a hole edge of the through-hole along with die-cutting a die for molding the resin lance,
And the die-cutting hole communicates with the insertion hole, and a side portion of a communication portion between the insertion hole and the die-cutting hole among the hole edges of the insertion hole, the tab inserted into the insertion hole. A restricting portion capable of restricting entry into the die-cutting hole side, wherein a portion of the resin lance that overlaps a hole edge of the insertion hole is located on the die-hole side from the die-cutting hole side. The connector is characterized in that it is formed so as to be narrower in width, and the restricting portion is formed so as to protrude inward as it approaches the peripheral surface of the insertion hole. 2. The tab is provided on a counterpart terminal fitting connected to the terminal fitting, and is inserted from the front into the insertion hole. The connector described. 3. The tab is provided integrally with the terminal fitting, and is inserted into the insertion hole as the terminal fitting is inserted into the cavity, and the periphery of the tab is provided with the regulating portion. The connector according to claim 1, wherein the connector is surrounded by and is restricted from moving. 4. The resin lance includes a cantilevered base disposed outside the cavity, and a locking portion protruding from the base into the cavity and locked by the terminal fitting. The connector according to any one of claims 1 to 3, wherein only the locking portion is formed so as to decrease in width toward the protruding end.