JP2010129358A - Connector and female terminal fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector reduced in size while maintaining a good electric connection state. <P>SOLUTION: The female terminal fitting 10 housed in a female housing includes a pair of barrel pieces 11 and 12. When the female housing is fitted to a male housing with the first barrel piece 11 being elastically deformed and locked by the second barrel piece 12, a male tab 20 of a male terminal fitting which protrudes from the male housing enters to a male terminal advance path formed between the pair of barrel pieces 11 and 12. Then, a locking release part 30 provided on the male housing abuts on a first locking rib 11B of the first barrel piece 11 to release the locking of the first barrel 11, and the first barrel piece 11 is elastically returned, whereby the male tab 20 is fastened by the pair of barrel pieces 11 and 12. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a connector and a female terminal fitting.

Conventionally, a female terminal fitting housed in a female connector is provided with an elastic tongue piece inside a rectangular tube-shaped member, and this elastic tongue piece is elastic with the protruding contact portion of the male terminal fitting provided on the mating male connector. There are some which can be electrically connected between both terminals by contact.
Here, as an elastic tongue piece, for example, as shown in Patent Document 1, there is one that is folded back in a U shape on the tip side and extends rearward, and its end is in contact with the bottom plate. It seems to be supported from both sides.
When the connector is fitted, the protruding contact portion of the male connector enters while elastically deforming the elastic tongue of the female connector. As a result, the elastic force (restoring force) of the elastic tongue acts between the male tab and the elastic tongue, so that a predetermined contact pressure is maintained and a good electrical connection can be obtained. ing.
JP2004039959A

By the way, when trying to reduce the size of the terminal fitting having the above-mentioned shape, it is possible to shorten the length of the elastic tongue piece (for example, to make the cantilever shape cantilevered). However, it was difficult because it became difficult to secure a contact pressure that could improve the electrical connection with the male tab.
For this reason, there has been a demand for a terminal fitting that has a different shape that does not have an elastic tongue piece and that is miniaturized while maintaining a good electrical connection state, and a connector that accommodates the terminal fitting.

  This invention is completed based on the above situations, Comprising: It aims at providing the connector and female terminal metal fitting which can be reduced in size, making an electrical connection state favorable.

The connector according to the present invention is
A male terminal fitting having a protruding contact portion;
A male housing that houses the male terminal fitting;
A female housing mating with the male housing;
A female terminal fitting having a male terminal entry path into which the projecting contact portion of the male terminal fitting enters when the male housing and the female housing are accommodated in the female housing;
An abutting position formed on the female terminal fitting and abutting on the protruding contact portion that has entered the male terminal approach path, and an elastic contact piece elastically deformable in a direction away from the abutting position;
A locking portion that is provided on the female terminal fitting or the female housing, and holds the elastic contact piece away from the contact position by being locked to a locked portion provided on the elastic contact piece,
It is characterized in that it is provided with an unlocking portion that is provided on the male housing or the male terminal fitting and releases the locked state of the locked portion by the locking portion when the two housings are fitted. Means 1).
According to the configuration of the means 1, since an elastic force is generated at the contact portion between the elastic contact piece of the female terminal fitting and the protruding contact portion of the male terminal fitting, a contact pressure that can improve the electrical connection state is provided. It becomes possible to secure. That is, the electrical connection state can be improved without the need for an elastic tongue piece extending in the entry direction of the projecting contact portion in electrical connection with the projecting contact portion. Therefore, the female terminal fitting can be reduced in size in the approaching direction of the protruding contact portion, whereby the connector that accommodates the female terminal fitting can also be reduced in size.

Further, in the configuration of the means 1, the protruding contact portion has a round pin shape, and the elastic contact piece includes a pair of arcuate contact pieces that come into contact with the outer peripheral portion of the protruding contact portion. (Means 2).
According to the configuration of the means 2, it is possible to reduce the resistance generated between the protruding contact portion and the elastic contact piece.

In addition to the means 1 or 2, the male housing is made of synthetic resin.
The unlocking portion may be formed integrally with the male housing (means 3).
According to the configuration of the means 3, by forming the locking release part integrally with the male housing, the locking release part can be easily formed.

In addition to the configurations of the means 1 to 3, the end portion of the elastic contact piece is provided with a locking rib that protrudes outward, and the locking releasing portion is abutted against the locking rib to lock the elastic contact piece. May be released (means 4).
According to the configuration of the means 4, it is only necessary to abut the locking release portion with the locking rib protruding outward, so that the locked state can be easily released.

The female terminal fitting according to the present invention is housed in a female housing that fits into a male housing that houses a male terminal fitting having a projecting contact portion, and the male terminal fitting is fitted with the male housing when the male housing and the female housing are fitted. A female terminal fitting having a male terminal entry path into which the protruding contact portion enters,
A contact position that contacts the protruding contact portion that has entered the male terminal approach path, and an elastic contact piece that is elastically deformable in a direction away from the contact position;
A locking portion that holds the elastic contact piece away from the contact position by locking to a locked portion provided on the elastic contact piece, and
When the two housings are fitted, the locking state of the locked portion by the locking portion is released by the locking releasing portion provided in the male housing (means 5).
According to the configuration of the means 5, since an elastic force is generated at the contact portion between the elastic contact piece of the female terminal fitting and the protruding contact portion of the male terminal fitting, a contact pressure that can improve the electrical connection state is applied. It becomes possible to secure. In other words, the electrical connection state can be improved without requiring an elastic tongue piece extending in the entry direction of the protrusion contact portion in electrical connection with the protrusion contact portion. A terminal metal fitting can be reduced in size.

Further, in the configuration of the means 5, the protruding contact portion has a round pin shape,
The elastic contact piece may be composed of a pair of arc-shaped contact pieces that come into contact with each other so as to wrap around the outer periphery of the protruding contact portion (means 6).
According to the configuration of the means 6, it is possible to reduce the resistance generated between the protruding contact portion and the elastic contact piece.

  According to the present invention, the terminal fitting can be reduced in size in the approach direction of the protruding contact portion.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
The connector according to the present embodiment includes a male housing (not shown in its entirety, but the vicinity of the male tab 20 of the male terminal fitting shown in FIG. 8) and the female terminal fitting 10 in which the male terminal fitting is accommodated. A female housing (female housing is not shown and only the female terminal fitting 10 is shown) is fitted. Among these, the female terminal fitting 10 has a pair of barrel pieces 11 provided on the female terminal fitting 10 with male tabs 20 (corresponding to the “protruding contact portion” of the present invention) of the male terminal fitting when the two housings are fitted. 12 is inserted, and an electrical connection is achieved. Hereinafter, the fitting direction of both housings will be described as the front, that is, the terminal fitting, with the left side in FIG. 2 as the front and the right side as the rear, the upper side in FIG.

The male housing is made of synthetic resin, and has a hood portion that has a substantially rectangular tube shape that opens forward, and a back wall portion 21 that closes the inside of the hood portion (only a part of the back wall portion 21 as shown in FIG. 8). Is shown).
The hood portion has a shape in which an upper wall and both side walls thereof are substantially orthogonal to each other, and a female housing can be fitted from the front.
The rear wall portion 21 is substantially orthogonal to the upper wall and both side walls, and a plurality of male terminal fittings are provided through the rear wall portion 21 in the width direction.

  The male terminal fitting is a bar-shaped terminal made of a copper alloy, and the male tab 20 projects from the rear wall portion 21 substantially vertically at one end side thereof. Therefore, a plurality of male tabs 20 are formed side by side in the width direction in the hood portion.

The male tab 20 has a cylindrical shape (having an arc-shaped peripheral surface), and a tapered surface 20A cut out on the taper is formed on the peripheral surface of the tip portion (see FIG. 6).
In addition, the side exposed to the outside from the back wall portion 21 is bent downward in an L shape, and the tip portion is connected to a substrate or the like (not shown).

  From the rear wall 21, as shown in FIG. 6, at a position above the male tab 20, an unlocking portion 30 for releasing the locking position of a pair of barrel pieces 11, 12 of the female terminal fitting 10 described later. Protrudes (see FIG. 7). In addition, since this latch release part 30 abuts on the 1st barrel piece 11 mentioned later and cancels | releases the latching state of the 1st barrel piece 11, the position of the 1st barrel piece 11 in a latching state It is arranged according to.

The unlocking portion 30 is a rectangle that is slightly longer in the width direction, and a bulging portion 31 that bulges downward is formed at the tip (front end) thereof.
The bulging portion 31 is a convex portion 32 that protrudes downward with a certain length on one end side in the width direction (right end side in FIG. 6), and the other end side in the width direction (left end side in FIG. 6) The inclined portion 33 is inclined so as to be higher toward the other end side (the inclined portion in which the gap between the male tab 20 is widened toward the other end side).

  A convex taper surface 32A is formed on the inclined portion 33 side of the front surface of the convex portion 32, and a convex tapered surface 32A is formed so as to deepen the inclined portion 33 side. An inclined tapered surface 33A that is cut out so that the lower side is deep is formed.

  In addition, the rear side (back wall side) of the bulging portion 31 has the first barrel piece 11 in the locking release portion 30 when the locking state of the first barrel piece 11 described later is released and elastically returned. It is a passage recess 34 provided with a space that can move to the tightening position without being blocked (see FIG. 7).

The female housing is made of synthetic resin and has a rectangular parallelepiped shape that can be fitted into the male housing, and cavities for accommodating the female terminal fittings 10 are formed side by side in the width direction.
As shown in FIG. 1, the female terminal fitting 10 includes a pair of barrel pieces 11 and 12 (an example of “a pair of arcuate contact pieces” according to the present invention) for electrical connection with the male tab 20 on the other side, It has the baseplate part 15, the rectangular tube-shaped square cylinder part 17, the wire barrel part 18 to which the core wire of a covered electric wire is connected, and the insulation barrel part 19 which hold | maintains a covered electric wire from on an insulation coating. FIG. 1 is a diagram illustrating the female terminal fitting 10 during molding (before elastic deformation of the first barrel piece 11).

  In the rectangular tube portion 17, when the connector is fitted, the male tab 20 that has entered the male terminal entry path formed between the pair of barrel pieces 11 and 12 is accommodated in the rectangular tube portion 17. Yes. Further, when the female terminal fitting 10 is accommodated in a cavity (not shown) of the female housing, the rear end portion 17A of the upper wall of the rectangular tube portion 17 is locked to the lance of the female housing so that the female terminal fitting 10 is removed. Stop is planned.

  The wire barrel portion 18 is formed behind the rectangular tube portion 17, and a pair of caulking pieces 18 </ b> A and 18 </ b> A are raised from the left and right side edges of the bottom plate portion 15. The pair of caulking pieces 18A and 18A are crimped so as to wrap the core wire of the covered electric wire. The wire barrel portion 18 and the bottom plate portion 15 are recessed with serrations 33 for breaking the oxide film formed around the core wire during pressure bonding.

  The insulation barrel portion 19 is connected to the wire barrel portion 18 via a connecting portion behind the wire barrel portion 18, and a pair of caulking pieces 19 </ b> A and 19 </ b> A are raised from the left and right side edges of the bottom plate portion 15. By curving these pair of caulking pieces 19A and 19A toward the covered electric wire, the covered electric wire is held so as not to be detached or displaced.

  The bottom plate portion 15 has a connecting portion 15B protruding from the front of the rectangular tube portion 17, and a front end portion of the connecting portion 15B is a base end portion from which the pair of barrel pieces 11 and 12 are extended.

The pair of barrel pieces 11, 12 are extended from one side edge of the bottom plate portion 15 and elastically deformable, the first barrel piece 11 (an example of the “elastic contact piece” of the present invention), and the other of the bottom plate portion 15. The second barrel piece 12 extends from the side edge, and the both barrel pieces 11 and 12 form a substantially circular male terminal entry path.
The first barrel piece 11 and the second barrel piece 12 are formed so as to be displaced in the front-rear direction, and immediately after the first barrel piece 11 (the base end portion), the second barrel piece 12 (the base thereof) is formed. End) is extended.

The first barrel piece 11 includes an arc-shaped first arc portion 11A and a first locking rib 11B that protrudes outward from the end portion of the arc portion.
The first arc portion 11A extends from the base end portion (the center in the width direction) which is the front end portion of the bottom plate portion 15 to a position slightly beyond the semicircle (the upper center of the circle) in the clockwise direction.

The second barrel piece 12 includes an arc-shaped second arc portion 12A and a second locking rib 12B that protrudes outward from the end portion of the arc portion.
The second arc portion 12A extends from the base end portion (the center in the width direction) which is the front end portion of the bottom plate portion 15 to the position of a substantially semicircle (the upper center of the circle) counterclockwise.

Note that the size of the male terminal approach path formed by the first arc portion 11A and the second arc portion 12A is slightly smaller than the size of the male tab 20 (the size of the circular cross section). Thus, a contact pressure that can improve the electrical connection between the male tab 20 and the pair of barrel pieces 11 and 12 is ensured. Accordingly, since the pair of barrel pieces 11 and 12 in which the male terminal approach path having such a size is formed abuts on the male tab 20, the position of the first barrel piece 11 in FIG. This is the “contact position at which the male tab 20 (protruding contact portion) that has entered the approach path contacts”.
The pair of barrel pieces 11 and 12 includes a locking position (state shown in FIG. 4) locked to the second barrel piece 12 in a state where the first barrel piece 11 is elastically deformed from the above-described contact position, and a male position. The tab 20 can be deformed into a tightening position (state shown in FIG. 15) which is in a tightened state and electrically connected.

Next, the locking position will be described.
First, about the 1st barrel piece 11 in the contact position before elastic deformation shown in FIG. 1, the 1st latching rib 11B is grasped with a jig | tool etc., and it spreads outward (the direction where a terminal approach path spreads).

  When the entire first locking rib 11B extends to a position exceeding the second locking rib 12B (to the left of the second locking rib 12B), the first locking rib 11B is pulled backward. When the entire first locking rib 11B is pulled to a position beyond the second locking rib 12B (behind the second locking rib 12B), the first locking rib 11B is pulled rightward.

  Then, when the first locking rib 11B overlaps the rear of the second locking rib 12B, the first locking rib 11B is released.

  Then, at this time, since the force to return elastically is toward the right side (right front) where the locking is not released, as shown in FIG. 4, the first locking rib 11B becomes the second locking rib. It is behind 12B, Comprising: The 1st latching rib 11B is latched in the latching position used as the position of the right side rather than the 2nd latching rib 12B. In other words, the first barrel piece 11 in the locking position is in a state in which it cannot be elastically restored because it is locked by the front second barrel piece 12 although the elastic force to elastically return to the front side is generated. is there.

  Therefore, in this locking position, the vicinity of the terminal end portion of the second arcuate portion 12A of the second barrel piece 12 is a locking portion for locking the first barrel piece 11, and the first barrel piece 11 in contact with the first barrel piece 11 is in contact therewith. The vicinity of the end portion of the circular arc portion 11A is a locked portion.

  The size of the male terminal entry path when the first barrel piece 11 is in the locking position is slightly larger than the size of the male tab 20 (the size of the cross section of the male tab 20) (male). This is the size of the male terminal entry path that allows a slight gap when the tab 20 is inserted).

Then, with respect to the female terminal fitting 10 in a state where the first barrel piece 11 is locked at the locking position, a covered electric wire exposing the core wire of the terminal portion is placed, and the core wire is caulked by the wire barrel portion 18 to be insulated. The insulation barrel 19 is caulked from above the coating. In addition, after performing the caulking process of these covered electric wires, you may make it transfer the 1st barrel piece 11 of the above-mentioned contact position to a latching position.
Then, the female terminal fitting 10 in which the covered electric wire is caulked and the first barrel piece 11 is set to the locking position is accommodated in the cavity of the female housing.

Next, the tightening position will be described.
The tightening position is a pair of barrel pieces when the pair of barrel pieces 11 and 12 are released from the locked state and the first barrel piece 11 is elastically restored by the lock release portion 30 of the male housing when the connector is fitted. 11 and 12 (FIG. 15).

  Specifically, the first barrel piece 11 in the locking position is elastically restored, so that the position of the first locking rib 11B of the first barrel piece 11 is returned to the front of the second barrel piece 12. At this time, the arc portion is in close contact with the circular male tab 20 with almost no gap, and the first barrel piece 11 is in a tightening position that is slightly outward (elastically deformed) with respect to the contact position. An elastic force from the first barrel piece 11 toward the male tab 20 is generated, and a tightening state in which a force for tightening the male tab 20 is applied between the pair of barrel pieces 11 and 12, and the pair of barrel pieces 11 and 12 and the male tab 20 are male. A contact pressure is generated between the tab 20 and the electrical connection to improve the electrical connection.

Next, the operation of the connector in this embodiment will be described.
As shown in FIG. 7, the female housing and the male housing in which the female terminal fitting 10 in which the first barrel piece 11 is in the locking position are accommodated are fitted.
Then, the male tab 20 enters the male terminal approach path between the pair of barrel pieces 11 and 12. When the tip part passes through the male terminal approach path, as shown in FIG. 8, the vicinity of the portion where the convex taper surface 32A and the inclined taper surface 33A intersect in the unlocking part 30 provided in the male housing is It abuts on the tip of the first locking rib 11B of one barrel piece 11.

  Then, as the male tab 20 enters, the first barrel piece 11 is outward (expanded) while the first locking rib 11B of the first barrel piece 11 is in sliding contact with the inclined tapered surface 33A of the locking release portion 30. Direction). Then, as shown in FIG. 12, when the first barrel piece 11 expands to the locking position where the entire first locking rib 11B is outside the second locking rib 12B, the first locking rib 11B and While the inclined taper surface 33 </ b> A of the unlocking portion 30 is separated, a force is applied to the first barrel piece 11 to elastically return toward the front.

  As a result, the first barrel piece 11 side surface of the second locking rib 12B is used as the sliding contact surface 13, and the bent portion of the base end portion of the first locking rib 11B is in sliding contact with the sliding contact surface 13. However, the first locking rib 11B moves forward.

And as shown in FIG. 13, when the whole 1st locking rib 11B exceeds the 2nd locking rib 12B, the passage recessed part 34 will be distribute | arranged to the lower side of the latch release | release part 30 at this time. Thus, the first locking rib 11B is elastically restored so as to enter the passage recess 34.
In this tightening position, as shown in FIG. 15, the pair of barrel pieces 11, 12 abut on the outer peripheral portion of the male tab 20, so that the pair of barrel pieces 11, 12 and the male tab 20 are in contact with each other. The gaps are tightened with almost no gap, and a good electrical connection state can be obtained.

(Effect of this embodiment)
Thus, the female terminal fitting 10 accommodated in the female housing of the connector can be elastically deformed in a contact position where it contacts the male tab 20 (protruding contact portion) that has entered the male terminal entry path and in a direction away from the contact position. 1st barrel piece 11 (elastic contact piece) and a locking portion for holding the first barrel piece 11 away from the contact position by locking to a locked portion provided on the first barrel piece 11 A second barrel piece 12 having And the latch release part 30 provided in the male housing cancels | releases the latching state of the to-be-latched part by a latching part at the time of both housings fitting.
As a result, an elastic force is generated at the contact portion between the first barrel piece 11 and the male tab 20 of the female terminal fitting 10, so that a contact pressure that can improve the electrical connection state can be secured. . Further, when the female terminal fitting 10 and the male tab 20 are electrically connected, the electrical connection state can be improved even if the female terminal fitting 10 does not require an elastic tongue piece extending in the insertion direction of the male tab 20. Therefore, the female terminal fitting 10 can be downsized in the insertion direction of the male tab 20, whereby the connector in which the female terminal fitting 10 is accommodated can also be downsized in the insertion direction of the male tab 20.

  Further, the male tab 20 has a round pin shape, and the pair of barrel pieces 11 and 12 are a pair of arcuate contact pieces that come into contact with the outer periphery of the male tab 20, so the male tab 20 and the pair of barrels Electric resistance generated between the pieces 11 and 12 can be reduced.

  Furthermore, since the latch release part 30 is integrally formed with the male housing made of synthetic resin, the lock release part 30 can be formed more easily than when it is provided on a male terminal fitting made of copper alloy.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the above embodiment, the locked portion of the first barrel piece 11 is locked to the locking portion of the second barrel piece 12, but the present invention is not limited to this. For example, you may make it lock the to-be-latched part of the 1st barrel piece 11 by using the other part of the female terminal metal fitting 10 as a latching part. In addition, a locking portion may be provided in the female housing instead of the female terminal fitting 10, for example, a locking portion protruding from the cavity of the female housing is provided integrally with the female housing, and the first barrel is provided in the locking portion. You may make it latch the to-be-latched part of the piece 11. FIG.

  (2) In the above embodiment, the first barrel piece 11 is elastically deformed, but the second barrel piece 12 may be elastically deformed. In this case, for example, the second locking rib 12B of the second barrel piece 12 may be elastically deformed up to the front of the first locking rib 11B to be the locking position.

  (3) Although the locking release portion 30 is provided in the male housing, it may be provided in the male terminal fitting, for example, a locking release portion integrally formed with the male terminal fitting.

  (4) The locking state may be released without providing the locking release portion 30. For example, the pair of barrel pieces are configured so that the size of the male terminal entry path at the locking position is smaller than the size of the male tab 20, and when the male tab 20 is inserted, the male tab 20 itself is the first barrel piece 11. The first barrel piece 11 may be applied with a force in a direction in which the first barrel piece 11 is released by being brought into contact with the first barrel piece.

  (5) Although the male tab 20 has a round pin shape and the pair of barrel pieces 11 and 12 have a pair of arcuate contact pieces, the present invention is not limited thereto. For example, a pair of barrel pieces having a shape that is in close contact with a male tab whose cross section is not circular may be configured, or the pair of barrel pieces may not be in close contact with the entire outer periphery of the male tab and may have a shape in which a gap is generated. However, it is more preferable that the pair of barrel pieces be in close contact with the outer periphery of the male tab because electric resistance can be reduced.

The perspective view which shows when the 1st barrel piece of the female terminal metal fitting which concerns on this embodiment exists in a contact position. Side view of FIG. Front view of FIG. Perspective view when the female terminal fitting is in the locked state Front view of FIG. Front view of unlocking part Schematic of the state before the male housing and female housing are fitted Schematic of the state where the unlocking part is in contact with the first barrel piece Side view of FIG. Sectional view of FIG. Side view of the first barrel piece elastically deformed in the spreading direction Sectional view of FIG. Side view of the first barrel piece elastically returning to the front Sectional view of FIG. Sectional view of the first barrel piece in the tightened position

Explanation of symbols

10 ... Female terminal fitting 11 ... First barrel piece (elastic contact piece)
11A ... first arc portion 11B ... first locking rib 12 ... second barrel piece 12A ... second arc portion 12B ... second locking rib 20 ... male tab (protruding contact portion)
30 ... Unlocking part

Claims (6)

A male terminal fitting having a protruding contact portion;
A male housing that houses the male terminal fitting;
A female housing mating with the male housing;
A female terminal fitting having a male terminal entry path into which the projecting contact portion of the male terminal fitting enters when the male housing and the female housing are accommodated in the female housing;
An abutting position formed on the female terminal fitting and abutting on the protruding contact portion that has entered the male terminal approach path, and an elastic contact piece elastically deformable in a direction away from the abutting position;
A locking portion that is provided on the female terminal fitting or the female housing, and holds the elastic contact piece away from the contact position by being locked to a locked portion provided on the elastic contact piece,
A connector provided on the male housing or the male terminal fitting, and a locking release portion that releases the locked state of the locked portion by the locking portion when the two housings are fitted. The connector according to claim 1, wherein the protruding contact portion has a round pin shape, and the elastic contact piece includes a pair of arc-shaped contact pieces that come into contact with each other so as to be wound around an outer peripheral portion of the protruding contact portion. The male housing is made of synthetic resin;
The connector according to claim 1, wherein the unlocking portion is integrally formed with the male housing. A locking rib protruding outward is provided at an end portion of the elastic contact piece, and the locking state is released by abutting the locking releasing portion against the locking rib. The connector according to any one of claims 1 to 3. A male terminal accommodated in a female housing that fits into a male housing that houses a male terminal fitting having a protruding contact portion, and into which the protruding contact portion of the male terminal fitting enters when the male housing and the female housing are fitted. A female terminal fitting having an approach path,
A contact position that contacts the protruding contact portion that has entered the male terminal approach path, and an elastic contact piece that is elastically deformable in a direction away from the contact position;
A locking portion that holds the elastic contact piece away from the contact position by locking to a locked portion provided on the elastic contact piece, and
A female terminal fitting in which a locked state of the locked portion by the locking portion is released by a locking releasing portion provided in the male housing when the two housings are fitted. The protruding contact portion has a round pin shape,
The female terminal fitting according to claim 5, wherein the elastic contact piece includes a pair of arc-shaped contact pieces that come into contact with each other so as to be wound around an outer peripheral portion of the protruding contact portion.

Images