JP5835115B2 - Terminal fitting - Google Patents

Description

The technique disclosed by this specification is related with a terminal metal fitting.

  Conventionally, a terminal fitting formed of a dissimilar metal has a box-shaped main body portion into which a mating terminal fitting is inserted from the front, and an elastic contact piece provided in the main body portion and elastically contacting the mating terminal fitting. Are known. According to such a terminal fitting, for example, the elastic contact piece is formed of an expensive heat-resistant copper alloy or the like, thereby improving the durability of the terminal fitting, while the body portion is formed of an inexpensive brass or the like, The material cost of the metal fitting can be kept low.

  As a method of attaching the elastic contact piece to the main body, for example, a method described in the following patent document is known. That is, by cutting and raising a part of the side wall of the main body portion, a locking hole and a locking projection protruding inward from the upper edge of the locking hole are formed, and an elastic contact piece is formed in the locking hole. This is a method of engaging the projecting pieces projecting on both sides of the.

Japanese Patent No. 2988608

  However, in the configuration as described above, although it is possible to prevent the elastic contact piece from falling off the main body, it is difficult to prevent the elastic contact piece from rolling, and the contact state with the counterpart terminal fitting is stable. There was a risk of not.

The technique disclosed in this specification has been completed based on the above-described circumstances, and an object thereof is to provide a terminal fitting capable of preventing the elastic contact piece from rolling.

The terminal fitting of the technique disclosed in this specification includes a box-shaped main body portion into which the mating terminal fitting is inserted from the front, and an elastic contact that is provided in the main body portion and elastically contacts the mating terminal fitting. The elastic contact piece has a shape that is long in the front-rear direction, and a side portion at the rear end portion thereof is caulked to the main body portion by a caulking portion formed on the main body portion. It is what. According to such a configuration, since the lateral displacement of the rear end portion of the elastic contact piece is suppressed by the caulking portion, it is possible to prevent the elastic contact piece from rolling.

  Further, the caulking portion is formed by cutting and raising a part of the main body portion, and a pair of caulking portions are provided on both sides of the elastic contact piece, and the elastic contact piece includes the pair of caulking portions. It is good also as what the both sides in the rear-end part are crimped by the said main-body part by the part. According to such a configuration, the lateral displacement of the elastic contact piece can be more reliably suppressed.

  Moreover, the back side crimping part which caulks the rear-end part of the said elastic contact piece from back is good also as the back side of the said elastic contact piece among the said main-body parts. According to such a configuration, the backward displacement of the elastic contact piece can be suppressed, and when the terminal fitting is manufactured, the rear caulking portion is used as the positioning of the elastic contact piece with respect to the main body portion. Can do.

  The caulking portion is provided with a pair on both sides of the elastic contact piece, and the elastic contact piece is caulked on both sides at the rear end by the pair of caulking portions, and the pair of caulking portions. The caulking portion may be welded. According to such a configuration, the elastic contact piece can be more firmly fixed.

  The rear end portion of the elastic contact piece and the main body portion may be welded. According to such a configuration, since the elastic contact piece and the main body can be conductively connected, excellent conductivity can be realized.

  The main body portion may be provided with a protective wall that stands in front of the elastic contact piece. According to such a configuration, it is possible to protect the elastic contact piece by preventing the elastic contact piece from jumping out to the front of the main body and from contacting an external foreign object with the elastic contact piece.

  Further, the body portion is provided with a lifting prevention portion that is located on the contact surface side with the mating terminal fitting with respect to the elastic contact piece and prevents the elastic contact piece from rising excessively. Also good. According to such a configuration, it is possible to prevent the elastic contact piece from floating excessively when the mating terminal fitting is inserted.

  The elastic contact piece may include a front engagement portion that engages with a front edge of the caulking portion and a rear engagement portion that engages with a rear edge of the caulking portion. According to such a configuration, the rearward displacement of the elastic contact piece is suppressed by the engagement of the front edge of the caulking portion and the front engaging portion, and the elastic force is obtained by the engagement of the rear edge of the caulking portion and the rear engaging portion. The forward displacement of the contact piece is suppressed. Therefore, the movement of the elastic contact piece in the front-rear direction can be suppressed.

  A concave portion into which the caulking portion enters is formed in a side edge portion of a rear end portion of the elastic contact piece, and a front side portion constituting a peripheral edge portion of the concave portion serves as the front engagement portion. The portion may be the rear engagement portion. According to such a structure, a front side engaging part and a rear side engaging part can be comprised by providing a recessed part in the side edge part of the rear-end part of an elastic contact piece.

  The peripheral edge portion of the recess may be caulked from the plate thickness direction of the elastic contact piece by the caulking portion. According to such a structure, since the peripheral part of a recessed part can be hold | suppressed by a caulking part, it can suppress that an elastic contact piece floats in a plate | board thickness direction.

  The caulking portion is formed by cutting and raising a part of the main body portion, and a pair of the caulking portions are provided on both sides of the elastic contact piece, and both side edges of the rear end portion of the elastic contact piece A pair of the front side engaging portions and a pair of the rear side engaging portions may be provided respectively. According to such a configuration, the movement and floating of the elastic contact piece in the front-rear direction can be more reliably suppressed.

According to the technique disclosed in this specification, it is possible to provide a terminal fitting capable of preventing the elastic contact piece from rolling.

The front view which shows the terminal metal fitting in Embodiment 1. Partially enlarged side view showing the body of the terminal fitting Partially enlarged plan view showing the body of the terminal fitting Partially enlarged bottom view showing the terminal bracket body Partially enlarged vertical sectional view showing the body of the terminal fitting Partially enlarged plan sectional view of the terminal fitting showing the state where the elastic contact piece is crimped Partially enlarged cross-sectional view of the terminal fitting showing the state where the elastic contact piece is crimped Partially enlarged vertical sectional view of the terminal fitting showing a state in which the male terminal fitting is inserted The partially expanded plane sectional view which shows the main-body part of the terminal metal fitting in Embodiment 2. Partially enlarged longitudinal sectional view of a terminal fitting showing a state of welding a pair of first caulking portions The partially expanded plane sectional view which shows the main-body part of the terminal metal fitting in Embodiment 3. Partially enlarged longitudinal sectional view of a terminal fitting showing a state where an elastic contact piece and a main body are welded The front view which shows the terminal metal fitting in Embodiment 4. Partially enlarged side view showing the body of the terminal fitting Partially enlarged plan view showing the body of the terminal fitting Partially enlarged bottom view showing the terminal bracket body Partially enlarged vertical sectional view showing the body of the terminal fitting Partially enlarged plan sectional view of the terminal fitting showing the state where the elastic contact piece is crimped Cross-sectional view showing a state where the elastic contact piece is caulked

<Embodiment 1>
Hereinafter, Embodiment 1 that embodies the technology disclosed in this specification will be described in detail with reference to FIGS.
The terminal fitting T in the present embodiment is a female terminal fitting connected to a tab-shaped male terminal fitting (mating terminal fitting) 40. The terminal fitting T includes a box-shaped main body 10 into which the male terminal fitting 40 is inserted from the front, and an elastic contact piece 20 that elastically contacts the male terminal fitting 40, and is in elastic contact with the main body 10. The piece 20 is formed of a dissimilar metal. Hereinafter, in each component, the front side in the connection direction with the male terminal fitting 40 will be described as the front, the opposite side as the rear, and the upper side in FIG. 1 as the upper side and the lower side as the lower side.

  The terminal fitting T is formed by punching and then bending a conductive metal plate material. The main body 10 has an elastic contact piece 20 formed of another conductive metal plate. It is installed. The terminal fitting T has an elongated shape in the front-rear direction as a whole, and a wire crimping portion (not shown) to be crimped to the terminal portion of the wire is provided behind the main body portion 10.

  The main body portion 10 is made of a copper alloy such as brass or beryllium copper, has a rectangular tube shape elongated in the front-rear direction, and has a terminal insertion port 11 into which the male terminal fitting 40 is inserted at the front end ( (See FIG. 8). As shown in FIG. 1, the main body 10 includes a bottom plate 12, a pair of side plates 13 </ b> A and 13 </ b> B standing upward from both edges in the width direction of the bottom plate 12, and an inner side and an outer side across the upper ends of the pair of side plates 13 </ b> A and 13 </ b> B An inner top plate 14A and an outer top plate 14B arranged to overlap each other. The inner top plate 14A is formed by bending from the upper end of one side plate 13A to the other side plate 13B of the pair of side plates 13A and 13B, and the outer top plate 14B is formed from the other side plate 13B to one side plate. It is formed by bending toward 13A.

  The inner top plate 14 </ b> A is arranged substantially parallel to the bottom plate 12. A contact portion 15 that contacts the male terminal fitting 40 from the upper side (the side opposite to the elastic contact piece 20) is formed on the inner top plate 14A. The contact portion 15 is formed by knocking the inner top plate 14A partially inward (downward), and has a shape that is long in the front-rear direction. The contact portion 15 is formed in a portion near the front end of the inner top plate 14 </ b> A, and the substantially entire portion is substantially parallel to the bottom plate 12. In a state where the terminal fitting T is properly connected to the male terminal fitting 40, the distal end portion of the male terminal fitting 40 reaches behind the contact portion 15, and substantially the entire contact portion 15 contacts the male terminal fitting 40. (See FIG. 8).

  The outer top plate 14B is formed with a protruding portion 16 that forms a box shape and protrudes upward (see FIG. 1). A portion of the outer top plate 14B excluding the protruding portion 16 is disposed along the plate surface of the inner top plate 14A, and a long hole portion 17 is opened on the rear side of the protruding portion 16 in the front-rear direction (see FIG. 3).

  The elastic contact piece 20 is made of a heat-resistant copper alloy or the like, and has an elongated shape in the front-rear direction as a whole. The entire elastic contact piece 20 is accommodated in the main body 10 and can be elastically displaced in the vertical direction in the main body 10. In the natural state of the elastic contact piece 20, the front end edge thereof is arranged without protruding forward from the bottom plate 12 of the main body portion 10, and the rear end edge protrudes rearward from the top plates 14 </ b> A and 14 </ b> B of the main body portion 10. It is arranged without doing.

  The cross-sectional shape of the elastic contact piece 20 viewed from the side is a mountain shape with a vertex formed at a position near the front end (see FIG. 5). The front end portion and the rear end portion of the elastic contact piece 20 are respectively a front fulcrum portion 21 and a rear fulcrum portion 22 that are in contact with the bottom plate 12 of the main body portion 10, and the elastic contact piece 20 is closest to the inner top plate 14 </ b> A. The arranged vertex is a contact portion 23 that contacts the male terminal fitting 40. The gradient from the front fulcrum portion 21 to the contact portion 23 is stiffer than the gradient from the contact portion 23 to the rear fulcrum portion 22. The lower surface (contact surface) of the front fulcrum portion 21 that contacts the bottom plate 12 has a smaller area than the lower surface (contact surface) of the rear fulcrum portion 22 that contacts the bottom plate 12. The width dimension of the elastic contact piece 20 is substantially constant over the entire length.

  In the natural state of the elastic contact piece 20, the distance between the contact portion 23 and the contact portion 15 of the main body portion 10 is set to be slightly smaller than the thickness of the male terminal fitting 40. And the male side terminal metal fitting 40 is clamped between the contact part 23 and the contact part 15 of the main-body part 10, and the electrical connection with the male side terminal metal fitting 40 is achieved.

  Now, the rear fulcrum part 22 of the elastic contact piece 20 is caulked to the main body part 10 by a first caulking part (caulking part) 30 and a second caulking part (rear caulking part) 31. The first caulking portion 30 and the second caulking portion 31 are formed by cutting and raising a part of the main body portion 10.

  The first caulking portion 30 is provided with a pair on both sides of the elastic contact piece 20. In the elastic contact piece 20, both side portions (right and left side portions) of the rear fulcrum portion 22 are caulked to the bottom plate 12 of the main body portion 10 by a pair of first caulking portions 30. The first caulking portion 30 is formed by cutting and raising a portion extending from the bottom plate 12 to the side plates 13A and 13B of the main body portion 10 (see FIGS. 2 and 4). The first caulking portion 30 is formed in a square shape with rounded corners, and the pair of first caulking portions 30 has a symmetrical shape with the axis of the main body portion 10 in between (see FIG. 6). The pair of first caulking portions 30 is tilted toward the center in the width direction of the elastic contact piece 20, and the side edge portions of the elastic contact piece 20 are sandwiched between the bottom plate 12 and caulked. The pair of first caulking portions 30 that are caulked on both side portions of the elastic contact piece 20 are arranged with a slight gap at the tip without overlapping each other.

  The second caulking portion 31 is provided on the rear side of the elastic contact piece 20. The rear fulcrum portion 22 of the elastic contact piece 20 is caulked from the rear by the second caulking portion 31. The second caulking portion 31 is formed by cutting and raising the central portion of the bottom plate 12 in the width direction, and has a square shape that is slightly smaller than the first caulking portion 30. The second caulking portion 31 is tilted forward, and the rear end edge of the elastic contact piece 20 is sandwiched between the bottom plate 12 and caulked to the central portion in the width direction of the elastic contact piece 20. The second caulking portion 31 that caulks the rear end portion of the elastic contact piece 20 does not overlap the first caulking portion 30, and is disposed slightly apart rearward from the first caulking portion 30.

  The rear fulcrum portion 22 of the elastic contact piece 20 is caulked to the pair of first caulking portions 30, thereby suppressing movement in the left-right direction (width direction) and caulking to the second caulking portion 31. The movement to the back (insertion direction of the male terminal fitting 40) is suppressed. In addition, the rear fulcrum portion 22 is caulked to the main body portion 10 in this way, so that the elastic contact piece 20 is held in the main body portion 10 without being detached from the main body portion 10.

  On the other hand, the front fulcrum part 21 of the elastic contact piece 20 is not fixed to the main body part 10 and can be displaced in the front-rear direction. Thereby, when connecting with the male terminal fitting 40, the front fulcrum portion 21 moves forward without hindering the elastic deflection of the elastic contact piece 20, so that a low insertion force of the male terminal fitting 40 is realized. be able to.

  Since the first caulking portion 30 is formed in the main body portion 10, a first opening 32 that is slightly larger than the first caulking portion 30 is formed from the bottom plate 12 to the side plates 13A and 13B. The entire first opening 32 is formed at a position shifted rearward from the hole 17 of the outer top plate 14B. Further, since the second caulking portion 31 is formed in the bottom plate 12 of the main body portion 10, a second opening 33 that is slightly larger than the second caulking portion 31 is formed. The second opening portion 33 is formed on the rear side of the second caulking portion 31, and the entirety thereof is formed so as to be shifted to the outside (rear side) of the main body portion 10.

  As shown in FIG. 5, the main body 10 is provided with a protective wall 34 that stands in front of the elastic contact piece 20. The protective wall 34 is formed integrally with the side plates 13A and 13B, and is separated from the bottom plate 12 (see FIG. 4). The protective wall 34 is provided on both of the pair of side plates 13A and 13B, and is bent from the front ends of the side plates 13A and 13B to the inside at a substantially right angle. The protective wall 34 has a substantially square shape, and a gap is formed between the pair of protective walls 34 (see FIG. 1). The pair of protective walls 34 cover the lower side of the main body 10 (below the terminal insertion port 11). The protective wall 34 is located farther away from the elastic contact piece 20 so that the front fulcrum portion 21 does not come into contact when the elastic contact piece 20 is elastically deformed (see FIG. 8).

  The main body portion 10 is provided with a lift prevention portion 35 that is located above the front fulcrum portion 21 of the elastic contact piece 20 (on the contact surface side with the male terminal fitting 40) and prevents the front fulcrum portion 21 from lifting. ing. The floating prevention portion 35 is bent from the upper end of the protective wall 34 to the rear substantially at a right angle. The floating prevention portion 35 is provided on both the pair of protective walls 34. The floating prevention portion 35 extends between the protective wall 34 and the bottom plate 12, and the front fulcrum portion 21 enters the space below (see FIG. 8).

Next, connection with the male terminal fitting 40 will be described.
When the male terminal fitting 40 is inserted into the terminal insertion slot 11, the male terminal fitting 40 comes into contact with the contact portion 23 of the elastic contact piece 20 so as to spread between the contact portion 23 and the contact portion 15 of the main body portion 10. And move forward (see FIG. 8). Meanwhile, the elastic contact piece 20 is elastically bent downward by sliding the front fulcrum portion 21 forward. Eventually, when the male terminal fitting 40 is inserted to a proper position in the main body 10, the male terminal fitting 40 is brought into a proper connection state.

According to the first embodiment configured as described above, the following effects can be obtained.
The terminal fitting T of this embodiment includes a box-shaped main body portion 10 into which the male terminal fitting 40 is inserted from the front, and an elastic contact piece that is provided in the main body portion 10 and elastically contacts the male terminal fitting 40. 20 is formed of a dissimilar metal, and the side portion of the elastic contact piece 20 at the rear fulcrum portion 22 is formed by a first caulking portion 30 formed by cutting and raising a part of the main body portion 10. It is squeezed.

Accordingly, since the first caulking portion 30 suppresses the lateral displacement of the rear fulcrum portion 22 of the elastic contact piece 20, the elastic contact piece 20 can be prevented from rolling and the male terminal fitting 40. A stable contact state with can be maintained.
The first caulking portion 30 is provided with a pair on both sides of the elastic contact piece 20, and the elastic contact piece 20 is caulked to the main body portion 10 on both sides of the rear fulcrum portion 22 by the pair of first caulking portions 30. It has been. Thereby, the displacement of the horizontal direction of the elastic contact piece 20 can be suppressed more reliably.

  Further, the rear fulcrum portion 22 of the elastic contact piece 20 is caulked from behind by a second caulking portion 31 provided on the rear side of the elastic contact piece 20. Thereby, the backward displacement of the elastic contact piece 20 can be suppressed, and when the terminal fitting T is manufactured, the second caulking portion 31 is used as the positioning of the elastic contact piece 20 with respect to the main body portion 10. Can do.

  Since the first caulking portion 30 and the second caulking portion 31 are formed by cutting and raising a part of the main body portion 10, for example, separately from the main body portion, the caulking portion is extended and formed. The material can be taken well and the material cost can be kept low. Further, since the first caulking portion 30 and the second caulking portion 31 are provided at the rear end portion of the main body portion 10, the first opening portion 32 and the second opening portion 33 can be formed relatively large.

  Further, the main body 10 is provided with a protective wall 34 that stands in front of the elastic contact piece 20. As a result, the elastic contact piece 20 can be elastically deformed excessively, and the front fulcrum portion 21 can be prevented from jumping forward of the main body 10 and external foreign matter can be prevented from coming into contact with the elastic contact piece 20. The piece 20 can be protected.

  Further, the main body portion 10 is provided with a lifting prevention portion 35 that is located above the front fulcrum portion 21 of the elastic contact piece 20 and prevents the elastic contact piece 20 from rising excessively. Thereby, it is possible to prevent the elastic contact piece 20 from floating excessively when the male terminal fitting 40 is inserted.

<Embodiment 2>
Next, a terminal fitting 50 according to a second embodiment that embodies the technology disclosed in this specification will be described with reference to FIGS. 9 and 10.
The terminal fitting 50 of the present embodiment is different from the first embodiment in that the pair of first caulking portions 30 are welded. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and the overlapping description is abbreviate | omitted.

  Similarly to the first embodiment, the terminal fitting 50 according to the present embodiment includes a box-shaped main body 10 into which the male terminal fitting 40 is inserted from the front, and an elastic contact piece that elastically contacts the male terminal fitting 40. 20 and the main body 10 and the elastic contact piece 20 are made of different metals. Further, the rear fulcrum portion 22 of the elastic contact piece 20 is caulked to the main body portion 10 by a pair of first caulking portions 30 formed by cutting and raising a part of the main body portion 10 as in the first embodiment. ing. In addition, in the terminal metal fitting 50 of this embodiment, the 2nd crimping part 31 is not provided.

  The pair of first caulking portions 30 are joined to each other by laser welding. After the pair of first caulking portions 30 are caulked to the elastic contact piece 20, the laser beam is irradiated from the laser welding machine 52 to the vicinity of the tip (welding portion 51). At this time, the upper surface of the elastic contact piece 20 is also melted for heat propagation, and the pair of first caulking portions 30 and the elastic contact piece 20 are joined to each other.

  As shown in FIG. 10, a window 53 for laser welding is opened in the main body 10. The window part 53 is formed in the rear-end part of the inner top board 14A and the outer top board 14B which are located above the welding part 51 among the main-body parts 10. FIG. Laser light can be irradiated into the main body 10 from above the main body 10 through the window 53.

As described above, in the present embodiment, similarly to the first embodiment, the pair of first caulking portions 30 suppresses the lateral displacement of the rear fulcrum portion 22 of the elastic contact piece 20. Can prevent rolling.
Further, since the pair of first caulking portions 30 are welded, the elastic contact piece 20 can be fixed more firmly. Furthermore, since the elastic contact piece 20 and the main body 10 are welded by laser welding, excellent conductivity can be realized. Moreover, since there is only one welding point, the processing cost can be kept low.

<Embodiment 3>
Next, a terminal fitting 60 according to a third embodiment that embodies the technology disclosed in this specification will be described with reference to FIGS. 11 and 12.
The terminal fitting 60 of the present embodiment is different from the first embodiment in that the elastic contact piece 20 and the main body 10 are welded. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and the overlapping description is abbreviate | omitted.

  Similarly to the first embodiment, the terminal fitting 60 according to the present embodiment includes a box-shaped main body 10 into which the male terminal fitting 40 is inserted from the front, and an elastic contact piece that elastically contacts the male terminal fitting 40. 20 and the main body 10 and the elastic contact piece 20 are made of different metals. Further, the rear fulcrum portion 22 of the elastic contact piece 20 is caulked to the main body portion 10 by a pair of first caulking portions 30 formed by cutting and raising a part of the main body portion 10 as in the first embodiment. ing. In addition, in the terminal metal fitting 60 of this embodiment, the 2nd crimping part 31 is not provided.

  And the back side fulcrum part 22 and the main-body part 10 of the elastic contact piece 20 are joined by laser welding. After the rear fulcrum portion 22 of the elastic contact piece 20 is caulked to the pair of first caulking portions 30, laser light is emitted from the laser welding machine 62 near the rear edge of the elastic contact piece 20 (welded portion 61). Irradiated, the rear end of the rear fulcrum portion 22 and the bottom plate 12 are welded. As shown in FIG. 12, the welding portion 61 is located at the rear end of the main body portion 10, so that laser light is irradiated from above the main body portion 10 without forming a window portion or the like in the main body portion 10. Can do.

As described above, in the present embodiment, similarly to the first embodiment, the pair of first caulking portions 30 suppresses the lateral displacement of the rear fulcrum portion 22 of the elastic contact piece 20. Can prevent rolling.
Moreover, since the elastic contact piece 20 and the main-body part 10 are welded, the elastic contact piece 20 can be fixed more firmly, and also the elastic contact piece 20 and the main-body part 10 are electrically connected by laser welding. Therefore, excellent conductivity can be realized. Moreover, since there is only one welding point, the processing cost can be kept low.

<Embodiment 4>
Next, a terminal fitting 70 according to a fourth embodiment that embodies the technology disclosed in this specification will be described with reference to FIGS. 13 to 19.
The terminal fitting 70 of the present embodiment is obtained by changing the configuration for caulking the elastic contact piece 20 in the first embodiment to the main body 10, and the description overlapping with that in the first embodiment is omitted. In addition, the same code | symbol shall be attached | subjected to the structure similar to Embodiment 1. FIG.

  As in the first embodiment, the terminal fitting 70 according to the present embodiment includes a box-shaped main body 80 into which the male terminal fitting 40 is inserted from the front, and an elastic contact piece that elastically contacts the male terminal fitting 40. 90, and the main body 80 and the elastic contact piece 90 are made of different kinds of metals. Moreover, the contact part 23 of this embodiment has a form which bulges upward by being struck out by press working. As shown in FIG. 18, the contact portion 23 extends long in the front-rear direction.

  A pair of excessive deflection preventing pieces 91 are formed on both sides of the contact portion 23 in the elastic contact piece 90. Each of the excessive deflection preventing pieces 91 has a form of projecting outward in the width direction from both side edges of the elastic contact piece 90. The distal end of each excessive deflection preventing piece 91 is arranged at a position that does not protrude outward in the width direction from the outer side surfaces of the side plates 13A and 13B of the main body 80. On the other hand, on both side plates 13A and 13B of the main body 80, a relief portion 81 into which each excessive deflection preventing piece 91 can enter is cut out. As shown in FIG. 14, the relief portion 81 has a substantially square shape, and the tip of the excessive deflection preventing piece 91 can come into contact with the upper edge thereof from below. Accordingly, when the elastic contact piece 90 is lifted upward, for example, when the male terminal fitting 40 is inserted obliquely, each excessive deflection preventing piece 91 is brought into contact with the upper edge of each relief portion 81, thereby being elastic. It is possible to suppress the contact piece 90 from being excessively bent and deformed.

  As shown in FIG. 16, the front end portion of the elastic contact piece 90 is formed so as to become narrower toward the front. On the other hand, the rear end portion 90R of the elastic contact piece 90 is slightly wide and extends in the front-rear direction, and the width dimension thereof is substantially the same as the distance between the opposing walls of the side plates 13A and 13B of the main body 80. It is said that.

  Now, a pair of recesses 92 are provided at both side edges of the rear end 90R of the elastic contact piece 90. The two concave portions 92 are arranged one by one on both side edges of the rear end portion 90R. The front portion 92F and the rear portion 92R of the recess 92 are both tapered, and the recess 92 as a whole is open outward in the width direction. Further, the front portion 92F and the rear portion 92R in the recess 92 are connected to each other by a straight portion 92S that extends linearly in the front-rear direction. In other words, the peripheral edge portion of the recess 92 is constituted by the front portion 92F, the straight portion 92S, and the rear portion 92R.

  A caulking portion 82 is formed at a position corresponding to the concave portion 92 in the main body portion 80. The caulking portion 82 of the present embodiment is formed by cutting and raising a part of the main body portion 80, similarly to the first caulking portion 30 of the first embodiment. Further, the caulking portions 82 are respectively disposed on both sides of the elastic contact piece 90 in the width direction. That is, a pair of caulking portions 82 are provided corresponding to the pair of recesses 92.

  The caulking portion 82 includes a shaft portion 82A that enters the straight portion 92S of the recess 92, and a head portion 82B that is formed larger in the front-rear direction than the shaft portion 82A. The head portion 82 </ b> B is disposed on the upper surface side in the peripheral portion of the recess 92. Accordingly, as shown in FIG. 19, when both the caulking portions 82 enter both the concave portions 92 and are caulked over the entire circumference, the peripheral portions of the both concave portions 92 are fixed by the both caulking portions 82, and the elastic contact piece 90 is It is held by the main body 80.

  In a state where the elastic contact piece 90 is held by the main body portion 80, the two linear portions 92S are sandwiched from both sides in the width direction by the shaft portions 82A and engaged with each other, whereby the elastic contact piece 90 rolls (displacement in the width direction). ) Can be suppressed. Moreover, the peripheral edge part of the recessed part 92 is pinched | interposed into the up-down direction (plate | board thickness direction of the elastic contact piece 90) between both the heads 82B and the bottom plate 12, and suppresses the floating of the elastic contact piece 90 by mutually engaging. Can do. Moreover, as shown in FIG. 16, the movement of the elastic contact piece 90 to the rear can be suppressed by engaging the front edge of the shaft portion 82A with the front portion 92F of the recess 92 from the rear. Further, since the rear edge of the shaft portion 82A engages with the rear portion 92R of the recess 92 from the front, the forward movement of the elastic contact piece 90 can be suppressed.

  When inserting both shaft portions 82A of both caulking portions 82 into both concave portions 92, insertion guidance is provided by the front side portion 92F and the rear side portion 92R. It can be fixed in a regular mounting posture.

  According to the fourth embodiment configured as described above, the elastic contact pieces 90 are moved in the front-rear direction and in the lateral direction (width direction) by caulking the peripheral portions of the concave portions 92 with the two caulking portions 82. Any movement in the vertical direction can be suppressed. In addition, the elastic contact pieces 90 can be prevented from being excessively bent by bringing the two excessive bending prevention pieces 91 into contact with the upper edges of the two escape portions 81.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings, and includes, for example, the following various aspects .

(1) According to the above embodiment, the main body portion 10 is made of a copper alloy such as brass or beryllium copper, and the elastic contact piece 20 is made of a heat-resistant copper alloy or the like. The combination of the material of the main body portion and the elastic contact piece can be variously changed depending on the application.
(2) According to the first to third embodiments, the front end portion of the elastic contact piece 20 is the front fulcrum portion 21 in contact with the bottom plate 12 of the main body portion 10, but is not limited thereto, and the front end portion of the elastic contact piece 20 May float away from the bottom plate of the main body (that is, the elastic contact piece has a cantilever shape).
(3) According to the first to third embodiments, the first caulking portion 30 is provided with a pair on both sides of the elastic contact piece 20. However, the present invention is not limited to this, and the first caulking portion is provided on only one of them. Also good. In this case, the first caulking portion may be extended to the other side, and both side portions of the terminal fitting may be caulked with one first caulking portion.
(4) According to the first to third embodiments, in the natural state of the elastic contact piece 20, the rear end edge thereof is arranged without protruding backward from the top plates 14 </ b> A and 14 </ b> B of the main body 10. However, the rear end edge of the elastic contact piece may be arranged so as to protrude rearward from the top plate.
(5) According to the first embodiment, the second caulking portion 31 is slightly smaller than the first caulking portion 30, but not limited to this, the second caulking portion is more than the first caulking portion. May be large.
(6) According to the second embodiment, not only the pair of first caulking portions 30 but also the elastic contact piece 20 are joined by laser welding. It is good also as what connects mutually. In this case, the pair of first caulking portions may be shaped so as to overlap each other.
(7) According to the second embodiment, the second caulking portion 31 is not provided, but the second caulking portion is not limited to this, and in addition to welding the pair of first caulking portions. It is good also as what caulks the rear end of an elastic contact piece.
(8) According to the second and third embodiments, the pair of first caulking portions 30 or the elastic contact pieces 20 and the main body portion 10 are welded by laser welding. It is also possible to do this.
(9) According to the above embodiment, the caulking portion is formed by cutting and raising, but the invention is not limited to cutting and raising, and the caulking portion may be formed by knocking out.
(10) According to the fourth embodiment, although the pair of caulking portions 82 and the pair of concave portions 92 are provided, only one caulking portion and concave portions may be provided, or three or more caulking portions and concave portions may be provided. It may be provided.
(11) According to the fourth embodiment, the front portion 92F and the rear portion 92R of the recess 92 are formed to be tapered with respect to the straight portion 92S, but the front portion and the rear portion are formed as the straight portion 92S. You may form so as to be orthogonal to. In this case, the shaft portion 82A of the caulking portion 82 may be formed to be the same as or slightly larger than the straight portion 92S, and the shaft portion 82A may be press-fitted into the recess.

T, 50, 60, 70 ... terminal metal fittings 10, 80 ... main body part 20, 90 ... elastic contact piece 30 ... first caulking part (caulking part)
31 ... Second caulking part (rear caulking part)
34 ... Protective wall 35 ... Floating prevention part 40 ... Male terminal fitting (mating terminal fitting)
82 ... caulking part 90R ... rear end part 92 ... concave part 92F ... front side part (front side engaging part)
92R ... rear part (rear engagement part)

Claims (4)

A box-shaped main body portion into which the mating terminal fitting is inserted from the front, and an elastic contact piece that is provided in the main body portion and elastically contacts the mating terminal fitting, are formed of dissimilar metals.
The elastic contact piece has a long shape in the front-rear direction, and a side portion at the rear end portion thereof is caulked to the main body portion by a caulking portion formed on the main body portion ,
The said elastic contact piece is a terminal metal fitting provided with the front side engaging part engaged with the front edge of the said crimping part, and the rear side engaging part engaged with the rear edge of the same crimping part . A concave portion into which the caulking portion enters is formed in a side edge portion of a rear end portion of the elastic contact piece, and a front side portion constituting a peripheral edge portion of the concave portion serves as the front engagement portion. The terminal fitting according to claim 1 , wherein a portion is the rear engagement portion. The terminal fitting according to claim 2 , wherein a peripheral edge portion of the recess is caulked from the plate thickness direction of the elastic contact piece by the caulking portion. The caulking portion is formed by cutting and raising a part of the main body portion, and a pair of the caulking portions are provided on both sides of the elastic contact piece, and both side edges of the rear end portion of the elastic contact piece terminal fitting according to any one of claims 1 to 3 a pair of said front engaging portion and a pair of the rear engaging portion is provided respectively.

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