JP5939471B2 - Terminal fitting - Google Patents

Description

  The present invention relates to a terminal fitting.

  Patent Document 1 discloses a female terminal fitting in which contact reliability is improved by assembling a separate protective cover to a terminal body. The terminal body is formed by integrally forming a rectangular tube portion in which an elastic contact piece is housed and a wire crimping portion connected to an electric wire. An elastic contact piece comes into elastic contact with the tab of the mating terminal inserted into the rectangular tube. The protective cover is formed with an elastic auxiliary piece as a means for compensating for the lack of elasticity of the elastic contact piece. By supporting the elastic contact piece with the elastic auxiliary piece, the contact pressure between the elastic contact piece and the tab can be increased. ing.

JP 10-050376 A

Since the terminal fitting uses a protective cover to increase the contact pressure between the elastic contact piece and the tab, the spring property required for the elastic contact piece may be relatively low. Moreover, since a terminal main body has the elastic contact piece which contacts a tab, and the electric wire crimping part connected to an electric wire, favorable electroconductivity is requested | required. Therefore, a relatively inexpensive copper alloy can be used as the material for the terminal body. On the other hand, since the elastic auxiliary piece is required to have a high spring property, it is necessary to use a relatively expensive material such as SUS for the protective cover on which the elastic auxiliary piece is formed. However, the conventional terminal fitting has a rectangular tube shape in which the protective cover surrounds the rectangular tube portion over the entire circumference. Therefore, the material cost of the protective cover is high, and an improvement is desired in this respect. .
The first invention has been completed based on the above-described circumstances, and aims to reduce the material cost.

Moreover, said terminal metal fitting is a form which the elastic contact piece extended in the cantilever shape, and the contact part with a tab is distribute | arranged to the extended edge part. However, the region of the elastic contact piece that is supported by the elastic auxiliary piece is limited to a region that extends from the base end portion to a position closer to the base end side than the contact portion. That is, the contact portion forming region and the region near the contact portion of the elastic contact piece are not directly supported by the elastic auxiliary piece. For this reason, when the elastic contact piece becomes loose and loses elasticity, the contact portion cannot be elastically brought into contact with the tab, and the contact pressure is insufficient and there is a concern about poor contact.
The second invention has been completed based on the above situation, and an object thereof is to avoid a contact failure caused by the elastic contact piece.

The terminal fitting according to the first invention is:
A terminal body;
A rectangular tube portion formed on the terminal body, into which a tab of a mating terminal is inserted;
An elastic contact piece formed on the terminal body so as to be accommodated in the rectangular tube portion, and elastically abutting against the tab inserted in the rectangular tube portion;
An auxiliary member that is separate from the terminal main body and can be accommodated in the rectangular tube portion with respect to the terminal main body,
An elastic support portion that is formed on the auxiliary member and applies an elastic pressing force in a direction in which the elastic contact piece approaches the tab;
Formed on the auxiliary member, the base end portion is connected to the elastic support portion and cantilevered, and the extended end portion is elastically brought into contact with the inner wall surface of the square tube portion. And a reinforcing portion that reinforces the elastic pressing force of the elastic support portion.

The terminal fitting according to the second invention is
A terminal body;
A rectangular tube portion formed on the terminal body, into which a tab of a mating terminal is inserted;
An elastic contact piece formed in the terminal body, housed in the rectangular tube portion and extended in a cantilever shape;
A contact portion that is formed at an extended end portion of the elastic contact piece and elastically contacts the tab inserted into the rectangular tube portion;
A supported portion formed at an extended end portion of the elastic contact piece and disposed in the vicinity of the contact portion;
An auxiliary member separate from the terminal body, which can be accommodated in the terminal body;
It is characterized in that it is provided with an elastic support portion that is formed on the auxiliary member and applies an elastic pressing force in a direction to approach the tab with respect to the elastic contact piece by contacting the supported portion. .

  According to the first invention, the auxiliary member does not surround the square tube portion over the entire circumference but is accommodated in the square tube portion, so that the material cost can be reduced. Further, since the elastic pressing force of the elastic support portion is enhanced by the reinforcing portion, the elastic pressing force of the elastic support portion with respect to the elastic contact piece can be improved and the elastic contact piece and the tab can be brought into contact with a high contact pressure.

  Further, according to the second invention, the elastic support piece abuts on the supported part in the vicinity of the contact portion and gives an elastic pressing force to the elastic contact piece, so that the elastic contact piece is set and loses elasticity. Even so, the elastic pressing force by the elastic support portion sufficiently acts on the contact portion. Thereby, since the contact pressure of an elastic contact piece and a tab is ensured, a contact failure can be avoided.

Front view of the terminal fitting of Example 1 Partial cutaway plan view of terminal fitting Bottom view of terminal fitting Cross section of terminal fitting Sectional view of the tab and terminal fitting connected Front view of auxiliary member Top view of auxiliary member Side view of auxiliary member Cross section of auxiliary member

(1) The terminal fitting of the first invention is
The elastic support portion and the reinforcing portion may be arranged so as to be aligned in a width direction intersecting with an insertion direction of the tab with respect to the rectangular tube portion.
According to this configuration, the reinforcing portion can be reduced in size with respect to the direction in which the elastic support portion, the elastic contact piece, and the tab are aligned, as compared with the case where the reinforcing portion is disposed on the opposite side of the elastic contact piece across the elastic support portion. Can do.

(2) The terminal fitting of the first invention is
The elastic contact piece protrudes from a central portion in the width direction of the wall portion constituting the square tube portion ,
A pair of said reinforcement part is arrange | positioned so that the said elastic support part may be pinched | interposed about the width direction, and you may come to contact | abut elastically with respect to the said wall part.
According to this configuration, even when the elastic contact piece is formed by cutting and raising the wall portion constituting the rectangular tube portion, it is possible to ensure a region where the extended end portion of the reinforcing portion is elastically contacted. Moreover, since the reinforcement part is arrange | positioned in a pair so that an elastic support part may be pinched | interposed, the attitude | position of the elastic support part connected with this pair of reinforcement part is stabilized.

(3) The terminal fitting of the first invention is
The elastic support portion extends obliquely so as to be away from the inner surface of the rectangular tube portion, and a protrusion shape that extends in a cantilever manner from the extended edge of the substrate portion to support the elastic contact piece A support part,
The reinforcing portion may include the substrate portion and an arm portion that extends in a cantilever manner from the extended end edge of the substrate portion and contacts the inner surface of the rectangular tube portion.
According to this configuration, the shape and size of the projecting support portion and the arm portion can be individually set, so that the degree of freedom in design is high.

(4) The terminal fitting of the first invention is
The elastic contact piece is in a cantilevered form,
A contact portion with the tab and a supported portion that comes into contact with the elastic support portion may be disposed on the extended end portion of the elastic contact piece.
According to this configuration, since the elastic support portion abuts on the supported portion in the vicinity of the contact portion and imparts an elastic pressing force to the elastic contact piece, even if the elastic contact piece is loose and loses elasticity, An elastic pressing force by the elastic support part is sufficiently applied to the contact part. Thereby, since the contact pressure of an elastic contact piece and a tab is ensured, a contact failure can be avoided.

<Example 1>
A first embodiment of the present invention will be described below with reference to FIGS.
<Outline of terminal fitting F>
The terminal fitting F of the first embodiment is a female terminal having a rectangular tube portion 12 at the front end. The male counterpart terminal 50 to which the terminal fitting F is to be connected has an elongated tab 51, and the tab 51 is inserted into the rectangular tube portion 12 from the front of the terminal fitting F, whereby the terminal fitting. F and the counterpart terminal 50 are connected.

  The terminal fitting F is configured by assembling a terminal main body 10 and an auxiliary member 30 manufactured as a separate component from the terminal main body 10. In the following description, the left side in FIGS. 2 to 5 is defined as “front side” in the front-rear direction. With respect to the vertical direction, the direction shown in FIGS. Regarding the left and right directions, the upper side in FIGS. 2 and 7 (plan view) is defined as the “right side”. Therefore, the left and right orientations shown in FIGS. 1 and 6 (front view) are opposite to the defined left and right orientations.

<Terminal body 10>
The terminal body 10 is formed by subjecting a plate material made of copper or copper alloy punched into a predetermined shape to bend or cut and raise, and has a shape elongated in the front-rear direction as a whole. As shown in FIGS. 4 and 5, a wire crimping portion 11 of an open barrel portion is formed at the rear end portion of the terminal body 10. The electric wire crimping portion 11 is fixed to the front end portion of an electric wire (not shown) so as to be conductive by crimping.

  A front end side region of the terminal body 10 is a rectangular tube portion 12. As shown in FIGS. 1, 2, and 4, the rectangular tube portion 12 includes a bottom wall portion 13 that is elongated in the front-rear direction (a wall portion that forms the rectangular tube portion recited in the claims), and left and right edges of the bottom wall portion 13 A pair of left and right side wall portions 14 rising upward at substantially right angles from each other, and a pair of upper wall portions 15 extending substantially at right angles from the upper end edges of the left and right side wall portions 14 and stacked vertically.

  An elastic contact piece 16 that elastically contacts the tab 51 inserted in the square tube portion 12 is provided in the square tube portion 12. The elastic contact piece 16 is formed by raising a part of the bottom wall portion 13 upward. The elastic contact piece 16 as a whole is elongated in the front-rear direction (that is, in a direction parallel to the insertion direction of the tab 51 with respect to the rectangular tube portion 12 in a plan view), and extends in a cantilevered manner from the bottom wall portion 13 to the front side. It is. The position of the elastic contact piece 16 in the width direction (direction orthogonal to the insertion direction of the tab 51) is set at the center of the rectangular tube portion 12.

  The height of the elastic contact piece 16 is highest at its front end. In other words, the vertical distance between the elastic contact piece 16 and the pressure receiving portion 19 described later is the smallest at the front end. At the highest position in the front end portion, a contact portion 17 having a shape protruding to the upper surface side is formed. The contact portion 17 is configured to elastically contact the lower surface of the tab 51 inserted into the rectangular tube portion 12. A region in front of the contact portion 17 in the front end portion of the elastic contact piece 16 is a supported portion 18 that is inclined so as to be slightly lower in height than the contact portion 17. The supported portion 18 is supported from below by an elastic support portion 35 of an auxiliary member 30 described later.

  As shown in FIGS. 1 and 4, a pressure receiving portion 19 is formed on the lower (inner side) upper wall portion 15 of the pair of upper and lower upper wall portions 15 so as to be struck downward (to the bottom wall portion 13 side). Has been. The pressure receiving portion 19 has a flat plate shape parallel to the insertion direction of the tab 51 with respect to the rectangular tube portion 12. The square tube portion 12 has a pair of left and right symmetrical locking portions by cutting up a portion extending from the left and right side edge portions of the bottom wall portion 13 to the lower end portions of the left and right side wall portions 14 to the inside of the square tube portion 12. 20 is formed. The cut-and-raised locking portion 20 is bent so as to face in parallel at a position close to the bottom wall portion 13. The locking portion 20 is a means for positioning and fixing the auxiliary member 30 within the rectangular tube portion 12.

<Auxiliary member 30>
The auxiliary member 30 is formed by bending a SUS plate material punched into a predetermined shape. The auxiliary member 30 is thinner than the terminal body 10. The auxiliary member 30 is assembled in a state of being accommodated in the rectangular tube portion 12. As shown in FIGS. 6 to 9, the auxiliary member 30 is substantially in close contact with the pair of front and rear bottom plate portions 31 </ b> F and 31 </ b> R that are substantially in close contact with the upper surface of the bottom wall portion 13 of the square tube portion 12 and the inner side surfaces of the left and right side wall portions 14. A pair of left and right symmetrical side plate portions 32, an elastic support portion 35, and a pair of symmetrical left and right reinforcing portions 40 are integrally formed.

  As shown in FIGS. 7 and 9, the front bottom plate portion 31 </ b> F is disposed at the front end portion of the auxiliary member 30, and the shape in plan view is a rectangle that is long in the left-right direction. The rear bottom plate portion 31R is disposed at the rear end portion of the auxiliary member 30, and the shape in plan view is formed with an escape recess 33 for avoiding interference with the elastic contact piece 16 at the center portion in the left-right direction of the front end edge. It has a substantially U shape. The left and right side plate portions 32 have a rectangular shape that is long in the front-rear direction as a whole in side view. The front end portions at the lower end edges of the left and right side plate portions 32 are connected by a front bottom plate portion 31F, and the rear end portions at the lower end edges of the left and right side plate portions 32 are connected by a rear bottom plate portion 31R. Therefore, as shown in FIG. 1, the front shape of the auxiliary member 30 is substantially U-shaped.

  As shown in FIGS. 8 and 9, a notch portion 34 penetrating in a substantially square shape is formed at the lower end edge of the rear end portion of the left and right side plate portions 32. As shown in FIG. 4, the notch 34 is arranged at a position corresponding to the locking portion 20 of the rectangular tube portion 12 in the front-rear direction and the up-down direction. The locking part 20 is locked to both front and rear opening edges of the notch part 34 in a state of passing through the notch part 34, and the auxiliary member 30 is positioned and fixed in the front-rear direction with respect to the rectangular tube part 12 by this locking structure. The Further, the locking portion 20 penetrating through the notch 34 abuts or locks the top surface of the rear bottom plate portion 31R from above, and the rear bottom plate portion 31R is vertically moved between the bottom wall portion 13 and the bottom wall portion 13R. It will be in the state where it was pinched. With this clamping structure, the auxiliary member 30 is positioned and fixed with respect to the rectangular tube portion 12 in the vertical direction.

  As shown in FIGS. 7 and 9, the elastic support portion 35 includes a substrate portion 36 extending obliquely upward and rearward from a substantially full width region at the rear end edge of the front bottom plate portion 31F, and a rear end edge (extended) of the substrate portion 36. And a projecting support portion 37 that extends in a cantilevered manner from the center in the left-right direction at the leading edge). As shown in FIG. 9, the projecting support portion 37 is continuous with the rear end edge of the substrate portion 36 so as to be lowered stepwise. That is, the height of the projecting support portion 37 is set lower than the highest position of the substrate portion 36 over the entire region. Further, the upper surface of the rear end region of the protruding support portion 37 is a support surface 38 that is substantially parallel to the bottom wall portion 13 and the front and rear bottom plate portions 31F and 31R.

  As shown in FIGS. 2 and 3, the projecting support portion 37 is disposed at a position corresponding to the elastic contact piece 16 in the left-right direction. The width of the projecting support portion 37 is set to be approximately the same as or slightly wider than the width of the elastic contact piece 16. As shown in FIGS. 4 and 5, the support surface 38 of the protruding support portion 37 is disposed so as to correspond to the supported portion 18 and the contact portion 17 of the elastic contact piece 16 in the front-rear direction. Further, in the vertical direction, the support surface 38 of the projecting support portion 37 is in a form of coming into contact with the supported portion 18 in a state where the elastic contact piece 16 is not elastically bent, and the elastic contact piece 16 is elastically bent. Either a form facing the lower surface of the supported part 18 in a state where it is not spaced apart or a form in which the elastic contact piece 16 is elastically bent by elastically pushing up the supported part 18 from below. It is set in the form.

  As shown in FIGS. 7 and 9, the reinforcing portion 40 extends in a cantilevered manner from the substrate portion 36 constituting the elastic support portion 35 and the left and right end regions of the extending edge of the substrate portion 36. And a pair of left and right symmetrical arm portions 41. In other words, the elastic support portion 35 and the reinforcement portion 40 have a configuration in which the substrate portion 36 is shared by both, and the base end portion 40F (substrate portion 36) of the reinforcement portion 40 is connected to the elastic support portion 35. Yes. As shown in FIG. 9, the arm part 41 is bent at an obtuse angle in a side view. A portion in front of the center in the extending direction (front-rear direction) of the arm portion 41 is a top portion 42 having the highest height in the arm portion 41.

  As shown in FIG. 4, the apex portion 42 is disposed at substantially the same position as the rear end portion of the protruding support portion 37 and the contact portion 17 in the front-rear direction. In the side view, the arm portion 41 is set in a shape and a position so as to overlap the elastic contact piece 16. The height of the upper end of the top portion 42 is set to be lower than the height of the upper end of the contact portion 17. The extended end portion 40R of the arm portion 41 (reinforcing portion 40) is in contact with the upper surface of the bottom wall portion 13 of the rectangular tube portion 12 without being elastically deformed, in the form of being in contact with being slightly elastically deformed, or It is set to one of the forms facing each other with a gap between them.

<Operation and Effect of Example>
When the tab 51 is inserted into the rectangular tube portion 12, the tab 51 applies a downward pressing force to the contact portion 17 in a state where it contacts the pressure receiving portion 19. Due to this pressing action, the contact portion 17 is displaced downward, and the elastic contact piece 16 and the elastic support portion 35 are elastically bent downward. At this time, the elastic restoring force of the elastic contact piece 16 and the elastic support portion 35 acts as an upward elastic pressing force (reaction force) on the elastic contact piece 16 via the projecting support portion 37 and the supported portion 18, and is elastic. A predetermined contact pressure is ensured between the contact piece 16 and the tab 51.

  Further, when the elastic contact piece 16 and the elastic support portion 35 are elastically bent while being displaced downward, the reinforcing portion 40 having the substrate portion 36 as a common part with the elastic support portion 35 is also displaced downward, and accordingly, The rear end portion of the arm portion 41 (the extended end portion 40R of the reinforcing portion 40) comes into contact with the bottom wall portion 13. Thereby, the reinforcement part 40 is elastically bent so that the angle of the top part 42 is expanded and the arm part 41 is curved. Therefore, the elastic pressing force of the elastic support portion 35 against the elastic contact piece 16 is enhanced by the elastic restoring force of the reinforcing portion 40.

  Further, since the elastic contact piece 16 is made of copper or a copper alloy and has an elongated shape, there is a concern that the elastic contact piece 16 loses its elasticity due to settling. However, since the elastic contact piece 16 is supported by the elastic support portion 35 from the side opposite to the elastic restoring force, the elastic contact piece 16 receives an elastic pressing force toward the tab 51 side by the elastic restoring force of the elastic support portion 35. Is granted. Moreover, as described above, the elastic pressing force of the elastic contact piece 16 is enhanced by the reinforcing portion 40. Therefore, even when the elastic contact piece 16 is set, the elastic contact piece 16 and the tab 51 can be brought into contact with each other with sufficient contact pressure by the elastic restoring force of the elastic support portion 35 and the reinforcing force of the reinforcing portion 40.

  In particular, since the supported portion 18 of the elastic contact piece 16 that is abutted and supported by the elastic support portion 35 is disposed in the vicinity of the contact point portion 17, even if the elastic contact piece 16 is loosened, the elastic support portion 16 The elastic restoring force 35 acts on the contact portion 17 almost directly. Thus, since the elastic pressing force by the elastic support portion 35 sufficiently acts on the contact portion 17, the contact pressure between the elastic contact piece 16 and the tab 51 is ensured, and contact failure can be avoided.

  The terminal fitting F of the first embodiment is configured by assembling the terminal body 10 and an auxiliary member 30 separate from the terminal body 10 to the terminal body 10. The assembled auxiliary member 30 is housed inside the rectangular tube portion 12 instead of surrounding the rectangular tube portion 12. According to this configuration, the material cost of the auxiliary member 30 can be reduced as compared with the case where the auxiliary member 30 surrounds the square tube portion 12 over the entire circumference.

  Further, the terminal fitting F of the first embodiment is arranged so that the elastic support portion 35 and the reinforcing portion 40 are arranged in the width direction (left-right direction) intersecting the insertion direction of the tab 51 with respect to the rectangular tube portion 12. The arrangement direction of the elastic support portion 35 and the reinforcement portion 40 is a direction that intersects the arrangement direction of the elastic contact piece 16 and the tab 51. Therefore, in the terminal fitting F of the first embodiment, the elastic support portion 35 and the elastic contact piece 16 are compared with the case where the reinforcing portion 40 is disposed on the opposite side of the elastic contact piece 16 with the elastic support portion 35 interposed therebetween. The size can be reduced in the vertical direction in which the tabs 51 are arranged.

  Further, the terminal fitting F of the first embodiment is formed by the elastic contact piece 16 being formed by raising and lowering the bottom wall portion 13 constituting the rectangular tube portion 12, so that the reinforcing portion 40 extends to the bottom wall portion 13. There is a concern that it is impossible to secure a region where the protruding end portion 40R is elastically contacted. However, the elastic support portion 35 is formed in the center portion of the bottom wall portion 13 in the left-right direction (width direction), and the pair of reinforcing portions 40 are arranged so as to sandwich the elastic support portion 35 in the left-right direction. Has been. Therefore, it is possible to secure a region on the bottom wall portion 13 where the extended end portion 40R of the reinforcing portion 40 abuts. Moreover, since the reinforcement part 40 is arrange | positioned in a pair so that the elastic support part 35 may be pinched | interposed, the attitude | position of the elastic support part 35 connected with this pair of reinforcement part 40 and the board | substrate part 36 is stabilized.

  Further, the terminal fitting F of the first embodiment includes a substrate portion 36 that extends obliquely so that the elastic support portion 35 is away from the inner surface (bottom wall portion 13) of the rectangular tube portion 12, and the extension of the substrate portion 36. It is comprised from the protrusion-shaped support part 37 extended in the cantilever form from an edge and supporting the elastic contact piece 16. As shown in FIG. On the other hand, the reinforcing portion 40 includes a substrate portion 36 and an arm portion 41 that extends in a cantilever manner from the extending end edge of the substrate portion 36 and contacts the bottom wall portion 13 of the rectangular tube portion 12. According to this configuration, the shape and size of the projecting support portion 37 and the arm portion 41 can be set individually, so that the degree of freedom in design is high.

<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) Although the number of elastic support portions is one in the first embodiment, a plurality of elastic support portions may be provided.
(2) In Example 1 described above, the number of reinforcing portions is two, but the number of reinforcing portions may be one or three or more.
(3) In the first embodiment, the pair of reinforcing portions are arranged so as to sandwich the elastic support portion in the width direction. Conversely, the pair of elastic support portions sandwich one reinforcing portion in the width direction. It is good also as an arrangement.
(4) In Example 1 described above, the elastic contact piece was formed by cutting and raising the wall portion constituting the square tube portion, but the elastic contact piece was a portion extending from the wall portion constituting the square tube portion. The form which gave the bending process etc. to may be sufficient.
(5) In the first embodiment, the supported portion for contacting the elastic support portion is arranged at the extended end portion of the elastic contact piece, and the supported portion is more than the extended end portion of the elastic contact piece. You may distribute | arrange to the area | region of a base end side.
(6) In the first embodiment, the supported portion is disposed in the vicinity of the contact portion. However, the supported portion and the contact portion may have a separated positional relationship.
(7) In the first embodiment, the protruding support portion of the elastic support portion and the arm portion of the reinforcement portion both extend from the extended edge of the common substrate portion. May extend from the side edge of the substrate portion.
(8) In the first embodiment, the auxiliary member is accommodated in the square tube portion. However, the second invention includes a form in which the auxiliary member surrounds the square tube portion.
(9) In the first embodiment, the auxiliary member is formed with the reinforcing portion that reinforces the elastic pressing force of the elastic support portion. However, the second invention includes a form in which the reinforcing member is not formed on the auxiliary member.

F ... Terminal metal fitting 10 ... Terminal body 12 ... Square tube part 13 ... Bottom wall part (wall part which comprises a square tube part)
DESCRIPTION OF SYMBOLS 16 ... Elastic contact piece 17 ... Contact part 18 ... Supported part 30 ... Auxiliary member 35 ... Elastic support part 36 ... Substrate part 37 ... Protruding support part 40 ... Reinforcement part 40F ... Base end part 40R ... of reinforcement part Extension end 41 ... Arm 50 ... Mating terminal 51 ... Tab

Claims (6)

A terminal body;
A rectangular tube portion formed on the terminal body, into which a tab of a mating terminal is inserted;
An elastic contact piece formed on the terminal body so as to be accommodated in the rectangular tube portion, and elastically abutting against the tab inserted in the rectangular tube portion;
An auxiliary member that is separate from the terminal main body and can be accommodated in the rectangular tube portion with respect to the terminal main body,
An elastic support portion that is formed on the auxiliary member and applies an elastic pressing force in a direction in which the elastic contact piece approaches the tab;
Formed on the auxiliary member, the base end portion is connected to the elastic support portion and cantilevered, and the extended end portion is elastically brought into contact with the inner wall surface of the square tube portion. And a reinforcing part that reinforces the elastic pressing force of the elastic support part.   2. The terminal fitting according to claim 1, wherein the elastic support portion and the reinforcing portion are arranged so as to be aligned in a width direction intersecting with an insertion direction of the tab with respect to the square tube portion. The elastic contact piece protrudes from a central portion in the width direction of the wall portion constituting the square tube portion ,
The pair of reinforcing portions are arranged so as to sandwich the elastic support portion with respect to the width direction, and elastically contact with the wall portion. Terminal fittings. The elastic support portion extends obliquely so as to be away from the inner surface of the rectangular tube portion, and a protrusion shape that extends in a cantilever manner from the extended edge of the substrate portion to support the elastic contact piece A support part,
The reinforcing portion includes the substrate portion and an arm portion that extends in a cantilever manner from the extended end edge of the substrate portion and contacts the inner surface of the rectangular tube portion. The terminal metal fitting of any one of Claim 1 thru | or 3. The elastic contact piece is in a cantilevered form,
The contact part with the said tab and the supported part which contact | abuts the said elastic support part are distribute | arranged to the extension end part of the said elastic contact piece, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. The terminal metal fitting according to item 1. A terminal body;
A rectangular tube portion formed on the terminal body, into which a tab of a mating terminal is inserted;
An elastic contact piece formed in the terminal body, housed in the rectangular tube portion and extended in a cantilever shape;
A contact portion that is formed at an extended end portion of the elastic contact piece and elastically contacts the tab inserted into the rectangular tube portion;
A supported portion formed at an extended end portion of the elastic contact piece and disposed in the vicinity of the contact portion;
An auxiliary member separate from the terminal body, which can be accommodated in the terminal body;
And an elastic support portion that is formed on the auxiliary member and abuts against the supported portion to apply an elastic pressing force in a direction in which the elastic contact piece approaches the tab. Terminal fitting.

Images