JP2003331972A - Connector and terminal fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to surely release locking of a lance of a terminal fitting and a fall-off preventing part of a cavity. <P>SOLUTION: The lance 30 is provided with a slanting part 31 extended diagonally backward from a fulcrum of its bending and a locking part 32 communicated in bending with an extended end of the slanting part 31, and the terminal fitting 20 is prevented from falling off as the locking part 32 is locked to the fall-off preventing 13. Since a contact position of the lance 30 with the fall-off preventing part 13 is the locking part 32 communicated with the slanting part 31 in bending, not a free end in an edge shape, there is no fear of the lance 30 biting into the fall-off preventing part 13, nor of the lance 30 being hooked by the fall-off preventing part 13 when the lance 30 is bent by a jig 40, so that a locking release by the jig 40 of the lance 30 with the fall-off preventing part 13 can surely be made. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a connector and a terminal fitting.

[0002]

2. Description of the Related Art Conventionally, as a connector and a terminal fitting, there is one disclosed in Japanese Patent Application Laid-Open No. 7-320809. This is because the terminal fitting is formed with a lance that projects obliquely rearward and is elastically bendable.The terminal fitting is inserted into the cavity of the housing from the rear side, and the lance is inserted into the retaining portion in the cavity. The rear end, that is, the free end is locked from the front to prevent the terminal fitting from being pulled out.

Further, when the terminal fitting is pulled out from the cavity, a jig inserted into the cavity from the front is applied to the lance, and the lance is elastically bent to disengage from the retaining portion so that the lance and the retaining portion are separated from each other. The terminal fitting can be pulled out by pulling the terminal fitting while maintaining the unlocked state.

[0004]

SUMMARY OF THE INVENTION In the above conventional one,
Since the lance is formed by obliquely cutting and raising a part of the wall portion forming the terminal fitting, the free end of the lance has an edge shape by being cut by a cutter during the cutting and raising process. On the other hand, since the retaining portion to which the free end of the lance is locked is formed in the synthetic resin housing, it is more easily deformed than metal. Therefore, when the edge-shaped free end of the lance hits the synthetic resin retaining portion, the free end may bite into the retaining portion. In particular, when an external force is applied to the terminal fitting after insertion in the pulling-out direction, the degree of biting increases.

In this way, when the free end of the lance is in the state of digging into the retaining portion of the cavity, even if the lance is bent by a jig, the free end is caught in the retaining portion, so that the lance is locked. You will not be able to bend it. If the lance is forcibly bent, the jig is strongly pressed against the lance, which may deform the lance. The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to reliably release the locking between the lance of the terminal fitting and the retaining portion of the cavity.

[0006]

According to a first aspect of the present invention, there is provided a synthetic resin housing having a cavity having a retaining portion, and a terminal fitting having a lance extending obliquely rearward. The terminal fitting inserted into the cavity from the rear is retained by the locking of the lance and the retaining portion, and the lance is bent by a jig inserted from the front. In the connector adapted to release the engagement with the retaining portion, the lance has an inclined portion extending obliquely rearward from a fulcrum of its bending, and an engagement extending in a bent shape with respect to an extending end of the inclined portion. And the terminal fitting is prevented from coming off by the engagement of the locking portion and the retaining portion.

According to a second aspect of the present invention, in the first aspect of the invention, there is provided a terminal fitting in which a lance extending obliquely rearward is formed, and the lance is formed in a cavity formed in a synthetic resin housing from the rear side. The lance and the retaining portion are inserted and retained by locking the lance with the retaining portion formed in the cavity, and the lance is bent by a jig inserted from the front. In the terminal fitting designed to be unlocked from the lance, the lance is connected to an inclined portion extending obliquely rearward from a fulcrum of the bending and a bent shape with respect to an extending end of the inclined portion. An engaging portion is provided, and the engaging portion and the retaining portion are engaged with each other so that they are prevented from coming off.

According to a third aspect of the invention, in the second aspect of the invention, the lance is formed by cutting and raising a part of a wall portion forming the terminal fitting, and the locking portion is the inclined portion. The extension portion extends from the extending end of the lance in a direction substantially parallel to the bending direction of the lance, and the locking portion is formed with an excessive bending restriction portion that projects laterally, and the lance has the wall. When the lance flexes toward the side, the excessive flexure restricting portion comes into contact with the wall to restrict flexure of the lance.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the excessive bending restriction portion is a contact portion with the jig. According to a fifth aspect of the present invention, in the invention according to any one of the second to fourth aspects, a pressing portion that extends in substantially the same direction as the extending direction of the inclined portion is formed in the locking portion, A receiving portion corresponding to the pressing portion is formed in a supporting portion that supports the lance, and when the lance passes through the retaining portion while elastically flexing during insertion into the cavity. Then, the pressure portion separates from the receiving portion, and the pressure portion collides with the receiving portion as the lance that has passed through the retaining portion elastically returns to the locking position with the retaining portion. It is configured to do.

[0010]

Actions and Effects of the Invention [Inventions 1 and 2] The contact portion of the lance with respect to the retaining portion is not a free end having an edge shape but a locking portion extending in a bent shape from the inclined portion. Therefore, even if the lance is strongly pressed against the retaining portion, the lance does not bite into the retaining portion. Therefore, when the lance is bent by the jig, no catch is generated between the lance and the retaining portion, and the locking of the lance and the retaining portion by the jig can be reliably performed.

[Invention of Claim 3] Since the excessive bending restriction portion is formed in the locking portion, the lance is prevented from excessively bending beyond its elastic limit. Further, since the lance is formed by cutting and raising a part of the wall portion, an opening portion corresponding to the lance is formed in the wall portion,
Since the locking portion is extended from the extending end of the inclined portion in a direction substantially parallel to the bending direction of the lance, and the excessive bending restriction portion is laterally projected from the locking portion, the excessive bending restriction portion is formed. Will be located outside the opening of the wall so as to correspond to a part of the wall. Therefore, when providing the excessive bending restriction means, it is not necessary to form a portion as the excessive bending restriction means on the wall portion side, and an increase in the number of processing steps for the wall portion can be avoided.

[Invention of Claim 4] Since the excessive bending restriction portion also serves as the contact portion of the jig, the shape is larger than that in the case where the contact portion with the jig is formed separately from the excessive bending restriction portion. Can be simplified. [Invention of Claim 5] When the terminal fitting is properly inserted into the cavity and the lance elastically returns to the locking position with the retaining portion, the pressing portion collides with the receiving portion and a collision noise is generated. The occurrence of this collision sound makes it possible to detect that the lance is locked in the retaining portion, that is, the terminal fitting is properly inserted into the cavity.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. The connector of the present embodiment includes a housing 10 and a terminal fitting 20. In the following description, with respect to the front-back direction, the left side in FIGS. 1 to 4 will be referred to as the front side. The housing 10 is made of a synthetic resin material and has a hood portion 11 that is open to the front. Inside the housing 10, the hood portion 11 from the rear end surface
A cavity 12 is formed so as to penetrate in the front-rear direction up to the innermost end face of the, and a retaining portion 13 that projects downward from the ceiling wall is formed in the cavity 12. Stopping part 1
3 has a substantially rectangular shape that is long in the front-rear direction when viewed from the side, and its front end surface is a locking surface 13F orthogonal to the insertion direction of the terminal fitting 20 into the cavity 12, and the rear end surface is the insertion direction of the terminal fitting 20. The guide surface 13R is oblique with respect to the guide surface 13R.

The terminal fitting 20 is formed by bending a metal plate material punched into a predetermined shape, and has an elongated shape in the front-rear direction as a whole. The front end portion in the front-rear direction is a tab 21 connected to a mating female terminal fitting (not shown), and the rear end portion is an open barrel-shaped wire crimping portion 22. Two
The end portions of 3 are connected by crimping. Terminal fitting 20
A portion between the tab 21 and the wire crimping portion 22 is a support portion 24 that is elongated in the front-rear direction. The support portion 24 has a substantially U shape in which a pair of side walls 26 are raised at right angles from both left and right edges of the bottom wall 25 (wall portion which is a constituent feature of the present invention). At a position slightly closer to the rear end on the upper edge of each side wall 26, a receiving portion 27 is formed that extends horizontally inward (parallel to the bottom wall) and abuts the extending ends. . The receiving portion 27 and the retaining portion 13 in the front-back direction
Regarding the positional relationship with the
The receiving portion 27 is positioned slightly rearward of the retaining portion 13 in a state where the receiving portion 27 is properly inserted in the second portion.

A lance 30 is formed in the support portion 24 by cutting and raising a part of the bottom wall 25.
The lance 30 is for locking the terminal fitting 20 inserted into the cavity 12 by engaging with the retaining portion 13 of the cavity 12, and is a flat plate extending obliquely upward and rearward from the front end portion of the bottom wall 25. -Shaped inclined portion 31 and this inclined portion 31
And a flat plate-shaped engaging portion 32 that extends in a bent shape from the extending end of the. The extending end of the inclined portion 31 (the highest portion of the lance 30) has substantially the same height as the upper edge of the side wall 26.
Further, the continuous portion of the inclined portion 31 and the locking portion 32 has a form bent in an arc shape. The extending direction of the locking portion 32 from the extending end of the inclined portion 31 is the direction in which the inclined portion 31 of the lance 30 is disengaged from the retaining portion 13, that is, the downward direction, and the free state (the lance 30 elastically bends). In the non-engaged state), the plate surface of the locking portion 32 is substantially parallel to the locking surface 13F at the front end of the retaining portion 13. Further, both the inclined portion 31 and the locking portion 32 have a constant width over the entire length, and the inclined portion 31 and the locking portion 32 have the same width dimension.

Further, at the extending end (lower end) of the engaging portion 32,
A pair of excessive flexure restricting portions 33 that project to the left and right sides are formed. The excessive deflection limiting portion 33 is continuous with the locking portion 32 so as to be flush with each other.
The distance between the outer edges of 3 is larger than the widths of the inclined portion 31 and the locking portion 32. On the other hand, an opening 28 is formed in the bottom wall 25 by cutting and raising the lance 30 (the inclined portion 31, the locking portion 32, and the excessive bending restriction portion 33). Of the opening 28, the inclined portion 31 and the locking portion 3
A region corresponding to 2 has a rectangular shape with a constant width, and a notch portion 29 corresponding to the excessive deflection regulating portion 33 is formed at the rear end of the rectangular opening region.

As described above, the inclined portion 31 is raised obliquely upward, and the locking portion 32 is downward (almost in the direction orthogonal to the bottom wall 25 and substantially in the direction in which the lance 30 elastically bends). In the same direction). Therefore, the excessive bending restriction portion 33 formed at the extended end (lower end) of the locking portion 32 is located in front of the cutout portion 29 in the opening region of the bottom wall 25 in the front-rear direction. Further, since the excessive bending restriction portion 33 projects laterally from the locking portion 32, it is located outside the opening region corresponding to the inclined portion 31 and the locking portion 32, and therefore, excessive bending The bottom wall 25, not the opening 28, is located directly below the restriction portion 33. Further, in a free state in which the lance 30 is not elastically deflected, a space having a size larger than the locking margin between the retaining portion 13 and the lance 30 is provided between the excessive deflection restricting portion 33 and the bottom wall 25. There is.

The terminal fitting 20 inserted in the cavity 12 can be removed by using the jig 40. The jig 40 has an elongated shape in the front-rear direction as a whole, and is inserted into the cavity 12 from the front. The insertion end of the jig 40 contacts the inclined portion 31 of the lance 30 and pushes it backward, and by this pushing operation, the lance 30
Is displaced downward and disengaged from the retaining portion 13. Next, the operation of this embodiment will be described.

When the terminal fitting 20 is inserted into the cavity 12 from the rear, the inclined portion 31 of the lance 30 abuts on the rear end of the retaining portion 13 in the insertion process, and thereafter, the inclination of the inclined portion 31 causes the entire lance 30 to come into contact. As a result of elastically bending downward, the upper end portion of the inclined portion 31 (bent portion connected to the locking portion 32) slides on the lower surface of the retaining portion 13. Then, when the terminal fitting 20 reaches the regular insertion position, the upper end of the inclined portion 31 passes through the retaining portion 13, and the lance 30 elastically returns upward due to the elastic restoring force of the inclined portion 31 and bends from the upper end of the inclined portion 31. The locking portion 32 continuous with the locking surface 13 of the retaining portion 13
Lock on F from the front. The locking of the lance 30 and the retaining portion 13 holds the terminal fitting 20 in a retaining state.

When the terminal fitting 20 is pulled out from this state, the jig 40 is inserted from the front, the insertion end portion is brought into contact with the inclined portion 31 of the lance 30, and the lance 30 is elastically bent downward. As a result, the lance 30 and the retaining portion 13
The locking of the and is released, and the terminal fitting 20 can be moved rearward. After that, the electric wire 23 may be pinched and the terminal fitting 20 may be pulled rearward while maintaining the unlocked state by the jig 40. In the present embodiment, the contact portion of the lance 30 with respect to the retaining portion 13 is not the edge-shaped free end, but the locking portion 32 that is connected in a bent shape from the inclined portion 31. Comes into surface contact with the retaining portion 13. Therefore, even if the lance 30 is strongly pressed against the retaining portion 13, the lance 30 does not bite into the retaining portion 13. Therefore, when the lance 30 is bent by the jig 40, no catch is generated between the lance 30 and the retaining portion 13, and the locking of the lance 30 and the retaining portion 13 by the jig 40 is reliably released. be able to.

Further, since the excessive bending restriction portion 33 is formed in the locking portion 32, even if the lance 30 is bent more than necessary by the jig 40, the excessive bending restriction portion 33 is applied to the bottom wall 25 from above. The abutment limits the flexing of the lance 30, which prevents the lance 30 from flexing excessively beyond its elastic limit. Further, since the lance 30 is formed by cutting and raising a part of the bottom wall 25, the opening 2 corresponding to the lance 30 is formed in the bottom wall 25.
8 is formed, the locking portion 32 is replaced by the inclined portion 31.
Since the extension of the lance 30 is extended in a direction substantially parallel to the bending direction of the lance 30 and the excessive deflection regulating portion 33 is laterally projected from the locking portion 32, the excessive deflection regulating portion 33 is formed.
Is located so as to be separated from the opening 28 and correspond to a part of the bottom wall 25. Therefore, when providing the excessive deflection regulating means, it is not necessary to particularly form a portion as the excessive deflection regulating means on the bottom wall 25 side, and it is possible to avoid an increase in the number of processing steps for the bottom wall 25.

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIGS. 6 to 12. In the second embodiment, the lance 51 of the terminal fitting 50 has a different form from that of the first embodiment. Since the other configurations are the same as those of the first embodiment, the same reference numerals are given to the same configurations, and the description of the structure, operation, and effect is omitted. The support portion 24 of the terminal fitting 50 has the first embodiment.
Similarly to the above, a receiving portion 27 is formed which extends horizontally (parallel to the bottom wall 25) from a position slightly closer to the rear end on the upper edge of each of the side walls 26 and abuts the extending ends. The pressure receiving portion 54, which will be described later, collides (presses) with the receiving portion 27.

A lance 51 is formed in the support portion 24 by cutting and raising a part of a bottom wall 25 (a wall portion which is a constituent of the present invention). The lance 51 includes a flat plate-shaped inclined portion 52 extending obliquely upward and rearward from the front end portion of the bottom wall 25,
A flat plate-like locking portion 53 extending in a bent shape from the extending end of the inclined portion 52, and a flat plate shape from the lower end (extending end) of the locking portion 53 to be substantially horizontal rearward (= the inclined portion 52 And a rear end portion 54R (extended end portion) is bent upward, and is substantially the same as the extending direction of the bottom wall 25.

A continuous portion of the extending end of the inclined portion 52 with the engaging portion 53 is bent in an arc shape, and the extending direction of the engaging portion 53 from the extending end of the inclined portion 52 is a lance. 5
The inclined portion 52 of No. 1 is in the direction of disengagement from the retaining portion, that is, downward, and in the free state (the state in which the lance 51 is not elastically bent), the plate surface of the retaining portion 53 retains the front end of the retaining portion 13. It is substantially parallel to the surface 13F. Further, the inclined portion 52, the locking portion 53, and the pressure portion 54 all have a constant width over the entire length, and the inclined portion 52, the locking portion 53, and the pressure portion 54 have the same width dimension. .

The upward rear end portion 54R of the pressing portion 54 is located at a position corresponding to the receiving portion 27 of the above-mentioned supporting portion 24 in the front-back direction, and when the lance 51 is in the free state, the receiving portion 27 faces the lower surface. The rear end portion 54R of the pressing portion 54 abuts or opposes with a slight gap. In the case of abutment, the lance 51 may be elastically abutted by slightly elastically bending. Further, when the lance 51 elastically bends downward, the pressing portion 5 is accompanied by this.
4 is also displaced downward, and the rear end portion 54R thereof is separated from the receiving portion 27. Further, the pressing portion 54 includes the inclined portion 52 and the locking portion 5.
Since 3 is extended rearward (on the side opposite to the fulcrum of the bending of the lance 51), when the lance 51 elastically bends, the upper end of the inclined portion 52 and the locking portion 53 in the vertical direction. The vertical displacement amount of the rear end portion 54R of the pressure portion 54 is larger than the displacement amount of.

Further, a pair of square-shaped projecting portions 55 that are flush with both left and right sides are formed in substantially the front half of the pressing portion 54 (the side that is continuous with the locking portion 53). The front end portions of both the overhanging portions 55 are the pressing portion 54 and the overhanging portion 55.
On the other hand, there are a pair of left and right excessive deflection restricting portions 56 that are inclined obliquely downward and forward. The excessive flexure restricting portion 56 is provided on the locking portion 5.
It is located on both the left and right sides of the lower end of 3, and the distance between the outer edges of both the overhanging portions 55 and both the excessive deflection restricting portions 56 is larger than the widths of the inclined portion 52, the locking portion 53 and the pressing portion 54. Is also a large size. Further, the excessive bending restriction portion 56 also serves as a contact portion for contacting the jig 41.

On the other hand, the bottom wall 25 is provided with a lance 51 (an inclined portion 52, a locking portion 53, an overhanging portion 55, and an excessive bending restriction portion 5).
The opening 58 is formed by cutting and raising 6). A region of the opening 58 corresponding to the inclined portion 52, the locking portion 53, and the pressing portion 54 has a square shape with a constant width, and the protruding portion 55 and the excessive flexure are formed on the left and right edges of the square opening area. A cutout portion 59 corresponding to the regulation portion 56 is formed. As described above, the inclined portion 52 is raised obliquely upward, and the locking portion 53 is downward (almost in the direction orthogonal to the bottom wall 25 and in the same direction as the direction in which the lance 51 elastically bends). Have been extended to. Therefore, the excessive flexure restricting portions 56 located on the left and right sides of the extended end (lower end) of the locking portion 53 have the openings 5 of the bottom wall 25 in the front-rear direction.
It is located in front of the notch 59 of No. 8. Furthermore, since the excessive bending restriction portion 56 is located outside the locking portion 53, the inclined portion 52, the locking portion 53, and the pressing portion 5 are provided.
4 is located outside the opening 58 corresponding to No. 4, and therefore the bottom wall 25 is located below the excessive deflection restricting portion 56, not the opening 58. Further, in a free state in which the lance 51 is not elastically deflected, a space larger than the locking margin between the retaining portion 13 and the lance 51 is provided between the excessive deflection restricting portion 56 and the bottom wall 25. There is.

The terminal fitting 50 inserted in the cavity 12 can be removed by using the jig 41. The jig 41 has an elongated shape in the front-rear direction as a whole, and is inserted into the cavity 12 from the front. At the insertion end of the jig 41, a pair of left and right releasing parts 42 are formed so as to be spaced apart in the width direction so as to correspond to the excessive bending restricting part 56 of the terminal fitting 50. The space therebetween is an escape space 43 for avoiding interference with the inclined portion 52 of the lance 51.

Next, the operation of this embodiment will be described. When the terminal fitting 50 is inserted into the cavity 12 from the rear, the inclined portion 52 of the lance 51 contacts the rear end of the retaining portion 13 in the insertion process, and thereafter, the inclination of the inclined portion 52 causes the lance 51 to move downward as a whole. Elastically deflecting the slanted portion 52
The upper end portion (bent portion connected to the locking portion 53) of the sliding contact the lower surface of the retaining portion 13. During this time, the rear end portion 54R of the pressure portion 54 is largely separated downward from the receiving portion 27 due to the elastic bending of the lance 51 (a part of the pressure portion 54 has entered the opening 58 of the bottom wall 25). State).

When the terminal fitting 50 reaches the normal insertion position, the upper end of the inclined portion 52 passes through the retaining portion 13, and the lance 51 elastically returns upward due to its elastic restoring force, and the upper end of the inclined portion 52. The locking portion 53 that extends in a bent shape from the
, But engages with the engagement surface 13F of the retaining portion 13 from the front. The locking of the lance 51 and the retaining portion 13 holds the terminal fitting 50 in a retaining state. Further, when the lance 51 elastically returns, the rear end portion 54R of the pressure portion 54 vigorously collides with the receiving portion 27 from below, thereby generating a collision sound. The operator knows that the occurrence of this collision sound causes the terminal fitting 50 to be properly inserted and to be in the removal preventing state.

When the terminal fitting 50 is to be removed from this state, the jig 41 is inserted from the front and the releasing portion 42 at the insertion end thereof is brought into contact with the excessive deflection restricting portion 56 of the lance 51, so that the lance 51 is lowered. Elastically bends to. As a result, the locking between the lance 51 and the retaining portion 13 is released, and the terminal fitting 50 can be moved rearward. After that, the electric wire 23 may be pinched and the terminal fitting 50 may be pulled rearward while maintaining the unlocked state by the jig 41.

In the second embodiment, the locking lance 51 has the locking portion 53 extending in a bent shape from the inclined portion 52 of the lance 51.
Since there is no possibility that the lance 51 will bite into the retaining portion 13, the locking of the lance 51 and the retaining portion 13 by the jig 41 can be reliably performed. Further, since the excessive bending restriction portion 56 is formed in the locking portion 53, even if the lance 51 is bent more than necessary by the jig 41, the excessive bending restriction portion 56 abuts against the bottom wall 25 from above. The flexing of the lance 51 is restricted, which prevents the lance 51 from flexing excessively beyond its elastic limit.

Since the lance 51 is formed by cutting and raising a part of the bottom wall 25, the bottom wall 25
An opening 58 corresponding to the lance 51 is formed in the lance 51. The locking portion 53 extends from the extending end of the inclined portion 52 in a direction substantially parallel to the bending direction of the lance 51.
Since the excessive flexure restricting portions 56 are located on both the left and right sides of the locking part 53, the excessive flexure restricting portions 56 correspond to the bottom wall 25, and the bottom wall 25 side is provided with a portion as excessive flexure restricting means. It does not have to be formed.

In addition, since the excessive deflection restricting portion 56 of the lance 51 also serves as the contact portion for contacting the jig 41, when the contact portion with the jig 41 is formed separately from the excessive deflection restricting portion 56. Compared to, the shape is simplified. Further, when the terminal fitting 50 is properly inserted into the cavity 12 and the lance 51 elastically returns to the locking position with the retaining portion 13, the pressing portion 5 is pressed.
4 collides with the receiving portion 27 to generate a collision noise, and the collision noise causes the lance 51 to move.
3 is locked, that is, the terminal fitting 50 has the cavity 12
It is possible to detect the insertion into the regular position inside.

[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 to the above, various modifications can be made without departing from the scope of the invention. (1) In the above embodiment, the locking portion extends downward, that is, the lance extends in the same direction as the displacement direction when disengaging from the retaining portion. However, according to the present invention, the locking portion has a lance. It may be configured to extend in a direction opposite to the direction of displacement when disengaged from the retaining portion.

(2) In the above embodiment, the lance is provided with the excessive bending restriction portion, but according to the present invention, the lance may not be provided with the excessive bending restriction portion. (3) In the above embodiment, the locking portion extends obliquely with respect to the inclined portion. However, according to the present invention, the locking portion may be folded back, that is, parallel to the inclined portion. You may bend to. (4) In the above embodiment, the lance is formed by cutting and raising a part of the wall portion forming the terminal fitting, but according to the present invention, the lance is formed from the support plate portion provided separately from the wall portion forming the terminal fitting. The lance may be extended and the support plate portion may be overlapped with the wall portion.

(5) In the second embodiment, the excessive deflection restricting portion also serves as the contact portion with the jig. However, according to the present invention, the contact portion of the jig is not the excessive deflection restricting portion. It may be formed separately. (6) In the above embodiment, the case where the terminal fitting is a male terminal fitting having a tab has been described, but the present invention can also be applied to a case where the terminal fitting is a female terminal fitting having no tab.

[Brief description of drawings]

FIG. 1 is a sectional view of a state in which a terminal fitting is inserted into a cavity according to the first embodiment.

FIG. 2 is a cross-sectional view showing a state in which the locking between the lance and the retaining portion is released by a jig.

[Fig. 3] Sectional view of terminal fittings

[Fig. 4] Plan view of terminal fittings

FIG. 5 is a perspective view of a lance.

FIG. 6 is a sectional view showing a state in which the terminal fitting is inserted into the cavity in the second embodiment.

FIG. 7 is a cross-sectional view with a jig inserted.

FIG. 8 is a sectional view showing a state in which the locking of the lance and the retaining portion is released by the inserted jig.

FIG. 9 is a sectional view showing a state in which the locking between the lance and the retaining portion is released by the inserted jig.

FIG. 10 is a sectional view of the terminal fitting.

FIG. 11 is a plan view of the terminal fitting.

FIG. 12 is a perspective view of a lance.

[Explanation of symbols]

10 ... Housing 12 ... Cavity 13 ... retaining part 20 ... Terminal fittings 24 ... Supporting part 25 ... Bottom wall (wall part) 27 ... Receiver 30 ... Lance 31 ... Inclined part 32 ... Locking part 33 ... Excessive deflection regulating section 40 ... Jig 41 ... Jig 50 ... Terminal fittings 51 ... Lance 52 ... Inclined part 53 ... Locking part 54 ... Pressing unit 56 ... Excessive deflection regulating section

Claims (5)

[Claims] 1. A synthetic resin housing having a cavity formed with a retaining portion, and a terminal fitting having a lance extending obliquely rearwardly, wherein the housing is inserted into the cavity from the rear side. The terminal fitting is prevented from coming off by locking the lance and the retaining portion, and the locking of the lance and the retaining portion is released by bending the lance with a jig inserted from the front. In the connector described above, the lance includes an inclined portion that extends obliquely rearward from a fulcrum of the bending, and a locking portion that extends in a bent shape with respect to the extending end of the inclined portion. A connector characterized in that the terminal fitting is prevented from coming off by the engagement between the connector and the retaining portion. 2. A terminal fitting having a lance extending obliquely rearward, the terminal fitting being inserted from the rear into a cavity formed in a housing made of synthetic resin and being formed in the cavity. The lock is locked by locking the lance to the part, and the locking of the lance and the locking part is released by bending the lance with a jig inserted from the front. In the terminal fitting, the lance is provided with an inclined portion that extends obliquely rearward from a fulcrum of its bending, and an engaging portion that extends in a bent shape with respect to the extending end of the inclined portion. A terminal fitting, characterized in that it is prevented from coming off by the engagement between the portion and the retaining portion. 3. The lance is formed by cutting and raising a part of a wall portion forming the terminal fitting, and the locking portion extends from an extending end of the inclined portion in a bending direction of the lance. While extending in a substantially parallel direction, the locking portion is formed with an excessive deflection regulating portion that projects laterally, and when the lance bends toward the wall portion, the excessive deflection regulating portion is formed. The terminal fitting according to claim 2, wherein the bending of the lance is restricted by the contact of the portion with the wall portion. 4. The terminal fitting according to claim 3, wherein the excessive bending restriction portion is a contact portion with the jig. 5. The pressing portion is formed in the locking portion so as to extend in substantially the same direction as the extending direction of the inclined portion, and the supporting portion that supports the lance corresponds to the pressing portion. In the process of insertion into the cavity, the pressing portion separates from the receiving portion as the lance passes through the retaining portion while elastically bending, and the retaining portion is formed. 3. The pressing portion collides with the receiving portion as the lance that has passed through the portion elastically returns to the locking position with the retaining portion. Item 5. The terminal fitting according to any one of item 4.