JP2009021187A - Female terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a female terminal having simple construction capable of making compatible the securing of gripping force in fitting a male terminal and the reduction of inserting force required when inserting the male terminal thereinto. <P>SOLUTION: The female terminal 1 includes a fitting part 12 for fitting the male terminal 2 inserted through a fitting inlet part 11, the fitting part 12 having a protruded portion 12e for elastically contacting the male terminal 2. On a bottom face portion 12c of the fitting part 12 opposed to the protruded portion 12e, a pair of bead parts 15, 15 are provided for contacting the male terminal 2 to restrict the displacement thereof. A tangential angle θ between a pair of contact portions of the male terminal 2 contacting the bead parts 15, 15 is 120°<θ<150°. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a female terminal including a fitting portion that fits with a male terminal inserted through a fitting inlet portion, and an elastic contact portion that elastically contacts the male terminal.

  In general, in a pair of connectors used for an automobile wire harness or the like, in many cases, one connector is a female terminal and the other connector is a male terminal that can be inserted and fitted into the female terminal.

  Among these, the following Patent Document 1 discloses a structure in which an elastic contact piece is disposed inside a female terminal, and a pair of walls extending substantially parallel to the longitudinal direction is provided on the top wall facing the elastic contact piece. An inward bead is formed. For this reason, when the male terminal is inserted into the female terminal, the male terminal is electrically connected while being sandwiched between the elastic contact piece and the bead.

  In this case, since the contact pressure when the male terminal is fitted to the female terminal, that is, the gripping force, can be increased by the elastic force of the elastic contact piece, the reliability of electrical contact can be improved.

  Further, in Patent Document 2 below, two electrical contacts corresponding to the elastic contact piece and the bead are arranged on the outer periphery of the inserted male terminal at equal intervals in the circumferential direction, that is, at an angle of 120 °. Is disclosed.

  For this reason, in the structure disclosed in Patent Document 2 below, two tangents that pass through the contact between the electrical contact and the male terminal intersect at an angle of 60 °, and this narrow angle of 60 ° is sufficient. A wedge effect is obtained.

  Therefore, in the structure disclosed in Patent Document 2 below, the inserted male terminal can be stably held at a predetermined fitting position by a high gripping force due to the wedge effect.

JP 2000-215940 A JP-A-5-251126

  By the way, in recent years, the number of terminals of the connector tends to increase with the complexity of the circuit configuration, etc. In the type of connector in which male and female terminals are fitted as described above, the number of connectors increases as the number of terminals increases. A large insertion force is required when connecting. Therefore, in recent years, it has been strongly desired to reduce the insertion force of the male terminal in order to facilitate the connector fitting operation.

  Therefore, conversely, if an attempt is made to reduce the insertion force with an emphasis on facilitating the connector fitting operation, there is a problem that this time the gripping force is reduced. If the gripping force of the female terminal is insufficient, the contacts of both terminals in the mated state are likely to be displaced due to the expansion of the connector and the occurrence of vibration due to the temperature rise. The displacement of the contact causes noise in the electrical signal, causing a situation where the energized state is momentarily cut off.

  It is an object of the present invention to provide a female terminal that can realize both of securing a gripping force in a fitted state with a male terminal and reducing the insertion force required when inserting the male terminal while having a simple structure. Objective.

  The female terminal of the present invention is a female terminal provided with an elastic contact portion that elastically contacts the male terminal at a fitting portion that fits with a male terminal inserted through a fitting inlet portion, and the elastic contact A pair of position restricting portions that come into contact with the male terminal and restrict displacement of the fixed contact portion of the fitting portion facing the portion, and the male terminal comes into contact with the position restricting portion. The angle θ formed by the tangent line is set to 120 ° <θ <150 °.

  In one embodiment of the present invention, the fixed contact portion of the fitting portion is formed with the position restricting portion including a bead portion substantially parallel to the insertion direction of the male terminal, and the bead portion is connected to the fitting portion. In the longitudinal direction, it is the same as the leading end position of the male terminal at the time of fitting from the fitting inlet portion, or further extended in the male terminal insertion direction from the leading end position.

  In an embodiment of the present invention, the bead portion has a middle portion in the longitudinal direction curved in a concave shape.

  In one embodiment of the present invention, the elastic contact portion is fitted in the fitting portion in which the male terminal and the bead portion are in contact with each other when the male terminal is fitted in the fitting portion. It is arrange | positioned so that the distance of the contact part by the side of an entrance part and the contact part of the back | inner side of the said fitting part may become equal.

  In one embodiment of the present invention, the fixed contact portion of the fitting portion has a pair of inclined portions inclined with respect to a plane orthogonal to the direction of the elastic force of the elastic contact portion, and the position restricting portion is , Formed on the inner surface side of the inclined portion.

  In one embodiment of the present invention, with respect to the angle θ, the angle at the contact portion with the male terminal on the back side of the fitting portion is larger than the angle at the contact portion with the male terminal on the fitting inlet portion side. Is narrower.

  According to the present invention, by setting the range of the angle θ to 120 ° <θ <150 °, an appropriate wedge effect can be obtained, and the gripping force in the fitted state with the male terminal can be obtained with a simple structure. Securing the insertion force and reducing the insertion force required when inserting the male terminal.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
First, the first embodiment shown in FIGS. 1 to 9 will be described. FIG. 1 is a plan view showing a female terminal 1 according to the present embodiment, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3B is a cross-sectional view taken along line BB in FIG. 3A, and FIG. 4 is a male terminal passing through a point where the protrusion 12e and the male terminal 2 are in contact with each other. It is sectional drawing in a surface perpendicular | vertical to the insertion direction of 2. FIG.

  In the female terminal 1 according to the present embodiment, as shown in FIG. 1, a fitting inlet portion 11 for passing the male terminal 2 into the female terminal 1 at one end and a fitting portion for fitting with the male terminal 2. 12 and a conductor gripping section 13 and an insulating coating gripping section 14 at the other end.

  The insulated terminal 3 is connected to the female terminal 1 by removing the insulating coating 31 on the distal end side and exposing the conductor 32. The conductor 32 is gripped by caulking both ends of the conductor gripping section 13, and the insulating coating 31 caulks both ends of the insulating coating gripping section 14 at a position slightly spaced in the longitudinal direction from the exposed portion of the conductor 32. It is gripped by.

  As shown in FIG. 2, the fitting portion 12 includes a lid portion 12a, a side surface portion 12b, and a bottom surface portion 12c, and has a box shape. And the elastic piece 12d which protrudes inside the fitting part 12 is provided inside the cover part 12a, and the protrusion part 12e is provided in the part protruded inside. The protrusion 12e is preferably a substantially hemispherical protrusion because the contact area with the male terminal 2 is reduced.

  Further, as shown in FIGS. 2 and 3, a pair of bead portions 15 and 15 that are substantially parallel to the insertion direction of the male terminal 2 are provided on the bottom surface portion 12c of the fitting portion 12 that faces the elastic piece 12d and the protruding portion 12e. Thus, the position restricting portion of the male terminal 2 is formed.

  The bead portions 15 and 15 are integrated with the fitting portion 12, and both ends in the width direction of the bottom surface portion 12c (the direction perpendicular to the longitudinal direction of the fitting portion 12 and the elastic force direction of the elastic piece 12d). Is located. Further, as shown in FIG. 3A, projecting portions 15b projecting from the intermediate portion 15a are respectively formed at both ends in the longitudinal direction of the bead portions 15 and 15, and the intermediate portion 15a has a concave shape in a side view. It is curved.

  Further, as shown in FIG. 4, the pair of bead portions 15 and 15 are inclined on the inner surface side with respect to the bottom surface portion 12c, and are symmetrical with each other when the bottom surface portion 12c is on the bottom.

  In the present embodiment, the inner surface sides of the bead portions 15 and 15 are formed in a substantially flat surface from the side surface portion 12b to the bottom surface portion 12c (see FIG. 4). In this way, in this embodiment, the male terminal 2 has a rectangular cross section, and even if the male terminal 2 is inserted into the female terminal 1 in an inclined state, the inclination is corrected in the process of being inserted. Then, as shown in FIG. 4, the side surface 12b of the female terminal 1 and the side surface of the male terminal 2 are parallel to each other. This is preferable because a stable gripping force can be obtained.

  Further, as shown in FIG. 4, the fitting portion 12 is formed by bending so that a cross section of one conductive metal piece has a substantially rectangular shape when viewed from the front, so that the lid portion 12a, the side surface portion 12b, The bottom surface portion 12c and the elastic piece 12d are integrally formed, and the elastic piece 12d is covered with the lid portion 12a.

  By the way, when the male terminal 2 having a rectangular cross section as shown by a two-dot chain line in the figure is inserted into the female terminal 1 having such a configuration, the protrusion 12e of the elastic piece 12d is electrically connected to the male terminal 2. In order to make a general connection, the male terminal 2 is elastically contacted, and at the same time, the bead portion 15 contacts both sides of the male terminal 2 inserted into the fitting portion 12 and displaces it. It comes to regulate. For this reason, the male terminal 2 can be held at a predetermined fitting position of the female terminal 1.

  Further, when the male terminal 2 is inserted into the female terminal 1, the male terminal 2 receives resistance force due to the wedge effect by the elastic force of the elastic piece 12d and the V-shaped slope formed by the bead portions 15 and 15. In this case, the male terminal 2 receives the resistance force F <b> 1 in the direction orthogonal to the inclined surface (the direction indicated by the arrow in FIG. 4) by contact with the bead parts 15 and 15. For this reason, when the male terminal 2 is inserted into the female terminal 1, an insertion force corresponding to a value obtained by applying a frictional force to the resistance force F1 is required.

  Here, when the male terminal 2 is inserted into the fitting portion 12, the elastic force that the male terminal 2 receives due to the elastic force of the elastic piece 12d is defined as P. Further, as shown in FIGS. An angle formed by both slopes of the bead portions 15 and 15 (an angle formed by a tangent of a pair of contact portions where the male terminal 2 contacts the position restricting portion, that is, a resistance force that the male terminal 2 receives by contact with the bead portion 15 If the angle formed by two lines orthogonal to the direction of F1 is θ, the angle formed by the direction of the elastic force P and the direction of the resistance force F1 is cos (90−θ / 2) as shown in FIG. Therefore, the resistance force, that is, the insertion force F1, can be expressed by F1 = P × 1 / cos (90−θ / 2).

  Further, the gripping force of the male terminal 2 generated after the male terminal 2 is inserted and fitted with the female terminal 1 depends on a lateral force F2 which is a component force of the force F1 shown in FIG. The gripping force can be obtained from this force F2 and the frictional force.

  That is, the component force F2 can be expressed as F2 = P × tan (90−θ / 2). Further, when considering the frictional force, for example, when the friction coefficient is α, the friction angle λ is expressed as α = tan λ. As a result, the gripping force by the bead portion 15 can be expressed as P × tan (90 + λ−θ / 2).

  FIG. 6 shows the calculation results of the insertion force and the gripping force when the angle θ in the above equation is changed. Here, the frictional force α is calculated as 0.25. According to FIG. 6, both the contact force and the gripping force tend to decrease as θ is set larger, and conversely, the value increases as θ is set smaller. However, the degree of change in the contact force and the gripping force is greatly different, and the change in the gripping force is much larger than the change in the insertion force.

  Therefore, the present inventor pays attention to the fact that the degree of change in the insertion force and the gripping force is greatly different, while ensuring the gripping force in the fitted state with the male terminal by a moderate wedge effect while having a simple structure. The present inventors have found that a preferable range of the angle θ that can simultaneously reduce the insertion force required when inserting the male terminal is 120 ° <θ <150 °.

  That is, when the angle θ is smaller than 120 °, the insertion force is about 1.15 P, and the increase is not negligible. Too much gripping force cannot be secured. For example, when the angle θ is 150 °, the value of the above formula P × tan (90 + λ−θ / 2) is about 0.5P, and this numerical value of 0.5P can be secured only by the frictional force. It is a numerical value that can be. For this reason, the limit of the preferable range of the angle θ is set to 150 °.

  In particular, it is preferable that the angle θ is in a range of 125 ° <θ <135 °, and the bead portion 15 is suppressed while the insertion force is suppressed to a range of about 1.06P to 1.13P as illustrated. Can be increased to about 0.74P to 0.89P. Therefore, from the above results, it can be said that the range of the angle θ is optimally 125 ° <θ <135 °.

  By the way, after the male terminal 2 is fitted to the fitting portion 12 of the female terminal 1, the insulated wire 3 is in the direction indicated by the arrow in FIG. 7 (the longitudinal direction of the fitting portion 12 and the elastic force of the elastic piece 12d. When it is pulled in a direction perpendicular to the direction of the elastic member 12d, there is a problem that a rotational moment M1 is generated along a plane perpendicular to the direction of the elastic force of the elastic piece 12d. In this case, depending on the degree of the rotational moment M1, the contacts of both terminals 1 and 2 may be displaced.

  Therefore, in the present embodiment, the bead portion 15 is arranged in the longitudinal direction of the fitting portion 12 from the fitting inlet portion 11 to be the same as the tip position of the male terminal 2 at the time of fitting, or more male than the tip position. It extends to a position extended in the insertion direction of the terminal 2. Thereby, even when the rotational moment M1 as described above is generated, the relative rotation of the female terminal 1 with respect to the male terminal 2 can be reliably suppressed, and the stability of the contact between the two can be ensured.

  In the present embodiment, the intermediate portion 15a is curved in a concave shape with respect to the protrusions 15b and 15b, so that the distal end side of the inserted male terminal 2 can be reliably connected to the intermediate portion 15a or the contact portion 15a on the back side. While gripping, the root side can be securely gripped by the protrusion 15b on the fitting inlet 11 side. This is preferable because the rotational moment M1 can be reliably received in the fitting portion 12.

  As described above, when the intermediate portion 15a is bent into a concave shape, the intermediate portion 15a is simply bent into a concave shape. May not be formed.

  By the way, as the rotational moment that can be generated after the male terminal 2 is fitted to the fitting portion 12 of the female terminal 1, in addition to the rotational moment M 1 described above, as shown in FIG. When the wire is pulled in the same direction as the direction of the elastic force of the elastic piece 12d, as shown in FIG. 8B, the insulated wire 3 is placed in a direction opposite to the direction of the elastic force of the elastic piece 12d. There is a rotational moment M3 when pulled.

  In this case, in FIG. 8A, a rotational moment M2 is generated with the protrusion 15b on the fitting inlet 11 side as a fulcrum X and the protrusion 12e as an action point, whereas in FIG. 8B, the male terminal 2 is generated. Rotational moment M3 is generated with the contact portion between the tip of the bead portion 15 and the bead portion 15 as a fulcrum Y and the protrusion 12e as an action point.

  Therefore, if the distances D0 and D1 between the fulcrums X and Y and the protrusions 12e are different, there will be a difference in the rotational moments M2 and M3 generated by the difference in the direction of the tensile force. For this reason, if the position of the protrusion 12e is not set appropriately, the value of the rotational moment is biased due to the difference in the direction of the tensile force, and when the insulated wire 3 is pulled to one side, a small rotational moment is sufficient, but the other When pulled, an excessive rotational moment is generated and a large load is applied to the male terminal 2.

  Therefore, in the present embodiment, in the fitting portion 12, the fitting position of the male terminal 2 in the fitting portion 12 is set in advance, and the fitting position is set to the position shown in FIG. 9A. In this case, the protruding portion 12e is a contact portion on the fitting inlet portion 11 side of the fitting portion 12 where the male terminal 2 and the bead portion 15 are in contact when the male terminal 2 is fitted at the fitting position. As shown in FIG. 9A, both are disposed so that the distance between the fitting portion 12 and the contact portion on the back side becomes equal to D0.

  This is preferable because it is possible to suppress the occurrence of bias in the values of the rotational moments M2 and M3 and to suppress an excessive load on the male terminal 2 depending on the direction of the tensile force.

  However, the insertion length of the male terminal 2 may be different as shown in FIGS. 9B and 9C due to variations in the length of the male terminal 2 and pulling of the insulated wire 3. Even in such a case, the protrusion 12e only needs to be within the section of the distance 2D0, and the closer to the center, the better.

  The male terminal 2 is generally positioned at a predetermined fitting position as shown in FIG. 9 (a) according to the specifications of the female terminal 1, and the fitting position as shown in FIGS. 9 (b) and 9 (c) is obtained. The frequency is very low. Therefore, the position of the protruding portion 12e is preferably set based on the case where the male terminal 2 is at a predetermined fitting position.

  The effect of disposing the bead portion 15 and the protruding portion 12e in consideration of the generation of the rotational moments M1 to M3 as described above becomes more conspicuous than, for example, the case where the insulated wires 3 arranged in the vehicle are connected to each other. . This is because in the vehicle, the rotational moments M1 to M3 are likely to be generated due to the vibration of the vehicle itself during traveling, and the positions of the bead portion 15 and the protruding portion 12e are set as described above. By doing so, a connection structure that can sufficiently withstand the vibration of the vehicle can be obtained.

  In addition, the angle θ is smaller in the contact portion on the back side of the fitting portion 12 (the angle value is smaller) than the angle in the contact portion on the fitting inlet portion 11 side of the female terminal 1. Furthermore, it is preferable because the gripping force is stabilized.

(Second Embodiment)
In the first embodiment described above, the case where a male terminal 2 having a rectangular cross section is used is shown. In addition, as shown in FIG. Sometimes used. Therefore, in such a case, the male terminal 2 ′ may be held by a pair of bead portions 15 ′ having a semicircular arc shape when viewed from the front as illustrated.

  In the case of the present embodiment, the contact point between the circle drawn by the male terminal 2 ′ and the arc drawn by the bead portion 15 ′ becomes the contact portion, and the angle corresponding to the angle θ of the first embodiment is the male terminal 2 ′ and the bead portion 15. It can be defined by an angle formed by tangents L and L passing through a contact portion with '. Also in the present embodiment, substantially the same effect can be obtained by setting the range of the angle θ to 120 ° <θ <150 °, more preferably 125 ° <θ <135 °, as in the first embodiment.

  In FIG. 10, no protrusion is provided, and the elastic piece 12d also serves as the protrusion.

(Third embodiment)
Moreover, in 1st, 2nd embodiment shown in FIGS. 1-10, although the bead part 15 is provided in the width direction both sides of the bottom face part 12c of the fitting part 12, this invention is not necessarily limited to this. For example, like the female terminal 50 shown in FIG. 11, in the fitting part 52 provided with the cover part 52a, the side part 52b, the bottom part 52c, the elastic piece 52d, and the projection part 52e, the lower part is substantially U. The cross-section of one conductive metal piece may be substantially D-shaped when viewed from the front.

  In the present embodiment, a pair of inclined portions 52c1 and 52c1 that are inclined obliquely with respect to a plane orthogonal to the direction of the elastic force applied by the elastic piece 52d to the male terminal 2 inserted through the fitting inlet portion 51 are provided on the bottom surface. The position restricting portion 52c2 corresponding to the bead portion 15 of the first and second embodiments is formed on the inner surface side of the inclined portion 52c1.

  For this reason, the male terminal 2 can be stably held by the wedge effect of the inclined portions 52c1 and 52c1, as in the first and second embodiments, without the need for a separate bead portion. In this case, the angle corresponding to the angle θ of the first embodiment is an angle formed by both inclined portions 52c1 and 52c1 of the bottom surface portion 52c (a tangent of a pair of contact portions where the male terminal 2 contacts the position restricting portion). Angle, that is, an angle formed by two lines perpendicular to the direction of the force that the male terminal 2 receives by contact with the position restricting portion 52c2, and also in this embodiment, the first and second implementations. Similar to the embodiment, by setting the range of the angle θ to 120 ° <θ <150 °, more preferably 125 ° <θ <135 °, substantially the same effect can be obtained.

  In relation to the configuration shown in FIG. 11, a bead portion as shown in the first embodiment may be further provided on the inner surface side of the inclined portion 52c1.

(Other embodiments)
In each of the above-described embodiments, the pair of bead portions 15, 15, 15 ′, 15 ′ and the position restricting portions 52c2, 52c2 are provided symmetrically. However, the present invention is not necessarily limited thereto. Even the asymmetry has the effect of the present invention. However, it is preferable that the left and right are symmetrical because a stable gripping force can be obtained.

  Moreover, in each embodiment mentioned above, in the female terminal 1, the cross section of one electroconductive metal piece is made into the box shape which makes a substantially rectangular shape by front view, and in the female terminal 50, it is substantially D-shaped. For example, it may be a cylindrical section whose section is circular when viewed from the front.

  As for the bead portion, for example, the bead portion may be formed by pressing a female terminal and projecting the inside of the fitting portion, or a separate conductive metal piece may be provided. It may be.

  In the second and third embodiments, the same components as those in the first embodiment described with reference to FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description thereof is omitted.

In correspondence between the configuration of the present invention and the above-described embodiment,
The elastic contact portion of the present invention corresponds to the elastic piece 12d and the protruding portions 12e and 52e,
Similarly,
The fixed contact portions correspond to the bottom surface portions 12c and 52c,
The position restricting portion corresponds to the bead portions 15, 15 ′ and the position restricting portion 52c2,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

The top view which shows the female terminal which concerns on 1st Embodiment of this invention. The AA arrow directional cross-sectional view in FIG. (A) The principal part enlarged view which shows the structure of a fitting part, (b) BB sectional view taken on the line in (a). Sectional drawing in the surface which passes along the point which the projection part and the male terminal are contacting, and is perpendicular | vertical to the insertion direction of a male terminal. The figure which shows the direction and magnitude | size of the force which a male terminal receives when a male terminal fits with a female terminal. The figure which shows the calculation result of insertion force at the time of changing angle (theta) and gripping force. The figure which shows the rotational moment when an insulated wire is pulled in the direction orthogonal to the longitudinal direction of a fitting part, and the direction of the elastic force of an elastic piece. (A) The figure which shows the rotational moment when the insulated wire is pulled in the same direction as the direction of the elastic force of the elastic piece, (b) When the insulated wire is pulled in the opposite direction to the direction of the elastic force of the elastic piece The figure which shows a rotational moment. (A) The figure which shows when a male terminal is made to fit in the predetermined | prescribed fitting position in a fitting part, (b) The figure which shows the case where the insertion length of a male terminal is shorter than when it is in a predetermined | prescribed fitting position. (C) The figure which shows the case where the insertion length of a male terminal is longer than when it exists in a predetermined fitting position. Sectional drawing which shows the female terminal which concerns on 2nd Embodiment of this invention. Sectional drawing which shows the female terminal which concerns on 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 50 ... Female terminal 2, 2 '... Male terminal 12, 52 ... Fitting part 12d, 52d ... Elastic piece 12e, 52e ... Protrusion part 15, 15' ... Bead part 52c1 ... Inclination part 52c2 ... Position control part

Claims (6)

A female terminal provided with an elastic contact portion that elastically contacts the male terminal on a fitting portion that fits with a male terminal inserted through a fitting inlet portion,
The fixed contact portion of the fitting portion facing the elastic contact portion includes a pair of position restricting portions that come into contact with the male terminal and restrict displacement thereof,
A female terminal in which an angle θ formed by a tangent of a pair of contact portions where the male terminal contacts the position restricting portion is 120 ° <θ <150 °. In the fixed contact portion of the fitting portion, the position restricting portion including a bead portion substantially parallel to the insertion direction of the male terminal is formed,
In the longitudinal direction of the fitting portion, the bead portion is extended from the fitting inlet portion in the same direction as the tip position of the male terminal at the time of fitting, or further extended in the male terminal insertion direction than the tip position. Item 1. The female terminal according to Item 1. The female terminal according to claim 2, wherein an intermediate portion of the bead portion is curved in a concave shape. The elastic contact portion includes a contact portion on the fitting inlet portion side of the fitting portion where the male terminal and the bead portion are in contact when the male terminal is fitted in the fitting portion, and The female terminal according to claim 2 or 3, wherein the female terminal is disposed so that the distance from the contact portion on the back side of the fitting portion is equal. The fixed contact portion of the fitting portion has a pair of inclined portions that are inclined with respect to a plane orthogonal to the direction of the elastic force of the elastic contact portion,
The female terminal according to claim 1, wherein the position restricting portion is formed on an inner surface side of the inclined portion. 2. The angle θ at the contact portion with the male terminal on the back side of the fitting portion is narrower than the angle at the contact portion with the male terminal on the fitting inlet portion side. Female terminal.

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