WO2019171914A1

WO2019171914A1 - Female terminal

Info

Publication number: WO2019171914A1
Application number: PCT/JP2019/005641
Authority: WO
Inventors: 誠道西島
Original assignee: 株式会社オートネットワーク技術研究所; 住友電装株式会社; 住友電気工業株式会社
Priority date: 2018-03-08
Filing date: 2019-02-15
Publication date: 2019-09-12
Also published as: CN111801850A; CN111801850B

Abstract

Provided is a female terminal comprising: a female terminal fitting 16; a male terminal insertion tubular part 26 into which a male terminal 12 is pushed, and of which the inner surface 28 constitutes a connection part 14; a pair of overlapping plate parts 25a, 25b which are connected to first separated sections 29, 29 provided by separating one circumferential portion of the male terminal insertion tubular part 26, and which are spaced apart from each other and protrude outward; and a biasing means 50 which biases the pair of overlapping plates 25a, 25b in a direction that causes the overlapping plates to overlap, thereby keeping the male terminal insertion tubular part 26 in a reduced diameter state, wherein, when the male terminal 12 is being pushed into the male terminal insertion tubular part 26, the male terminal insertion tubular part 26 is elastically deformed in a diameter expanding direction against the biasing force, thus allowing the male terminal 12 to be pushed into the male terminal insertion tubular part 26.

Description

Female terminal

The present invention relates to a female terminal, and more particularly to a female terminal capable of conducting connection with a male terminal with a large contact pressure.

Conventionally, as a female terminal used in an electrical system such as an automobile, for example, as described in Japanese Patent Application Laid-Open No. 2011-238558 (Patent Document 1), a box-shaped case having an opening at a side edge, There has been known one having a pair of flexibly deformable connecting portions protruding toward the inside of the case. As shown in FIG. 8 of Patent Document 1, such a female terminal is provided with an urging force in a direction approaching a pair of connecting portions after the male terminal is inserted into the case from the opening. By attaching the spring member of the body, electrical connection between the connection portion of the male terminal and the female terminal can be achieved with a large contact pressure.

JP 2011-238558 A

By the way, in the female terminal of such a conventional structure, since it is necessary to attach a separate spring member after inserting a male terminal into an inside of a case from an opening part, an operation process increases and workability | operativity deteriorates. There was a fear. Therefore, for example, it is conceivable to apply a large biasing force in the direction of approaching the pair of connection portions in advance, but in this case, the insertion force when inserting the male terminal into the pair of connection portions of the case from the opening. Therefore, there is a possibility that the insertion becomes difficult or the case of the female terminal or the male terminal is damaged during the insertion.

In addition, when any external force is applied to the male terminal or female terminal, the external force is transmitted in the direction of elastic deformation of the spring member. Could fluctuate.

The present invention has been made in the background of the above-mentioned circumstances, and its solution is to secure a large contact pressure between the male and female terminals, while reducing the insertion force and facilitating the work. An object of the present invention is to provide a female terminal having a novel structure capable of suppressing fluctuations.

The present invention includes a female terminal fitting including a connection portion that is electrically connected to a male terminal, and a male terminal insertion tube portion that is provided in the female terminal fitting and that is press-fitted into the male terminal to constitute the connection portion by an inner surface. The pair of the male terminal insertion tube portions are connected to the pair of first separation portions provided by being separated over the entire length in the axial direction and are separated from each other and project outward. And a biasing means that is held by the female terminal fitting and biases the pair of overlapping plate portions in a direction to overlap each other to hold the male terminal insertion tube portion in a reduced diameter state. And when the male terminal is press-fitted into the male terminal insertion tube portion, the male terminal insertion tube portion is elastically deformed in the diameter increasing direction against the urging force of the urging means. It is a female terminal adapted to allow press-fitting into the male terminal insertion tube portion.

According to the present invention, it is possible to press the connection portion constituted by the inner surface of the male terminal insertion tube portion with a large contact pressure against the male terminal press-fitted into the male terminal insertion tube portion. In addition, high contact pressure between the male and female terminals can be realized with excellent workability. In addition, it is possible to advantageously reduce or prevent the contact pressure between the male and female terminals from fluctuating due to an external force.

The whole perspective view showing the female terminal as a first embodiment of the present invention. The top view of the female terminal shown in FIG. The bottom view of the female terminal shown in FIG. IV-IV sectional drawing in FIG. It is sectional drawing of the female terminal metal fitting shown in FIG. 4, Comprising: The figure which shows the state before a pair of overlapping board part is urged | biased by the urging | biasing means. FIG. 6 is a sectional view taken along line VI-VI in FIG. 2. The whole perspective view which shows the female terminal as 2nd embodiment of this invention. The top view of the female terminal shown in FIG. The bottom view of the female terminal shown in FIG. XX sectional drawing in FIG. It is sectional drawing of the female terminal metal fitting shown in FIG. 10, Comprising: The figure which shows a state before a pair of overlapping board part is urged | biased by the urging | biasing means. XII-XII sectional drawing in FIG. It is sectional drawing which shows the female terminal as 3rd embodiment of this invention, Comprising: The figure corresponded in FIG. It is sectional drawing which shows the female terminal as 4th embodiment of this invention, Comprising: The figure corresponded in FIG. It is sectional drawing which shows the female terminal as 5th embodiment of this invention, Comprising: The figure corresponded in FIG. The whole perspective view showing the female terminal as a 6th embodiment of the present invention. XVII-XVII sectional drawing in FIG. The whole perspective view showing the female terminal as a 7th embodiment of the present invention. XIX-XIX sectional view in FIG. It is sectional drawing of the female terminal metal fitting shown in FIG. 19, Comprising: The figure which shows a state before a pair of overlapping board part is urged | biased by the urging | biasing means.

First, embodiments of the present invention will be listed and described.

According to a first aspect of the present invention, there is provided a female terminal fitting including a connecting portion that is electrically connected to a male terminal, and a male terminal that is press-fitted into the female terminal fitting and constitutes the connecting portion by an inner surface. The terminal insertion cylinder part and the male terminal insertion cylinder part are connected to a pair of first separation parts provided by being separated over the entire length in the axial direction and separated from each other. A pair of overlapping plate portions projecting in the direction and the female terminal metal fitting are biased in a direction in which the pair of overlapping plate portions are overlapped to hold the male terminal insertion tube portion in a reduced diameter state. Urging means, and when the male terminal is press-fitted into the male terminal insertion tube portion, the male terminal insertion tube portion is elastically deformed in the diameter increasing direction against the urging force of the urging means. A female terminal adapted to allow press-fitting of the male terminal into the male terminal insertion tube portion.

According to the female terminal of this aspect, the male terminal insertion cylinder provided in the female terminal fitting includes a pair of first separation parts separated over the entire length in the axial direction at one place in the circumferential direction, A pair of overlapping plate portions that are connected to the separation portion and are spaced apart from each other and project outward are provided. Then, the biasing means held by the female terminal fitting biases the pair of overlapping plate portions in a direction in which they are brought close to each other and overlapped. As a result, the pair of first separation parts of the male terminal insertion cylinder part are elastically deformed in a direction in which they are close to each other and overlapped, and the male terminal insertion cylinder part is held in a reduced diameter state by the urging force of the urging means. It has come to be. In addition, when the male terminal is press-fitted into the male terminal insertion tube portion, the male terminal insertion tube portion can be elastically deformed in the diameter increasing direction against the biasing force. Press fitting of male terminals into the is allowed. In the female terminal of this aspect having such a structure, a force in the diameter reducing direction is applied to the male terminal insertion tube portion by the urging force of the urging means. Therefore, it is possible to press the connection portion constituted by the inner surface of the male terminal insertion tube portion with a large contact pressure against the male terminal press-fitted into the male terminal insertion tube portion.

Moreover, since the biasing means is held by the female terminal fitting, after the male terminal is conductively connected to the female terminal as in the conventional structure, a separate spring member or the like is attached so as to sandwich the conductive connection portion. There is no need. Therefore, the work process can be simplified, and high contact pressure between the male and female terminals can be realized with excellent workability.

Further, when the male terminal is press-fitted into the male terminal insertion tube portion, elastic deformation in the diameter increasing direction of the male terminal insertion tube portion is allowed against the urging force of the urging means. Therefore, it is possible to stably maintain the contact pressure state while advantageously reducing the insertion force when the male terminal is inserted toward the connection portion of the female terminal.

In addition, when some external force is applied to the male terminal, the external force is transmitted radially outward of the male terminal insertion tube portion. Therefore, the transmission direction of the external force is different from the overlapping direction, which is the biasing direction of the pair of overlapping plate portions by the biasing means. Therefore, it is possible to advantageously reduce or prevent the contact pressure between the male and female terminals from fluctuating due to the external force transmitted to the male terminal, and it is possible to ensure the improvement of the conduction stability between the male and female terminals.

According to a second aspect of the present invention, there is provided the metal according to the first aspect, wherein the female terminal fitting includes a strip-shaped metal flat plate, and constitutes one of the pair of overlapping plate portions. One end portion in the longitudinal direction of the flat plate is folded back toward the other end portion and overlapped with the other of the pair of overlapping plate portions provided on the other end portion side, whereby the longitudinal direction of the metal flat plate The middle terminal portion is curved and the male terminal insertion tube portion is provided.

According to this aspect, the female terminal fitting includes the pair of first separation parts separated along the entire axial length of the male terminal insertion cylinder part at one place in the circumferential direction of the male terminal insertion cylinder part, A pair of overlapping plate portions that are connected to the separation portion and are spaced apart from each other and project outward are provided. Therefore, the female terminal fitting provided with the male terminal insertion tube portion can be manufactured easily and with a high yield by a simple structure in which one end of the belt-shaped metal flat plate is folded back to the other end.

According to a third aspect of the present invention, in the second aspect, the other end portion of the metal flat plate constituting the female terminal fitting is an electric wire connecting portion, and the electric wire connecting portion and the The biasing means for biasing the pair of overlapping plate portions in the approaching direction is arranged and held between the male terminal insertion tube portions.

According to this aspect, the other end portion of the metal flat plate is an electric wire connecting portion, and the urging means is disposed and held between the electric wire connecting portion and the male terminal insertion tube portion, whereby the male terminal from the electric wire connecting portion. The separation distance of the insertion cylinder part is ensured. As a result, the male terminal insertion tube portion can be advantageously protected from the thermal effect when the core wire exposed to the end of the external electric wire is connected and fixed to the end of the external wire by welding or the like, and the plating characteristics due to the thermal effect The effects on the environment can be reduced or avoided.

According to a fourth aspect of the present invention, in the one described in the first aspect, the female terminal fitting extends over the entire length in the axial direction at another place in the circumferential direction of the male terminal insertion tube portion. And a pair of extending plate portions projecting outwardly connected to the second separating portion, and the pair of extending plate portions are overlapped with each other. The electric wire connection part is comprised by.

According to this aspect, the electric wire connection portion is provided by overlapping the pair of extending plate portions extending from the second separation portion provided in the male terminal insertion tube portion. As a result, the pair of extending plate portions extending from both of the pair of second separating portions can be used as a current path, and the disconnection of the electric wire connecting portion configured by overlapping the pair of extending plate portions with each other can be performed. An area can be advantageously secured. As a result, a larger amount of current can be passed, and a large cross-sectional area of the electric wire connection portion can be ensured even if the plate thickness dimension of the male terminal insertion tube portion is reduced. Therefore, the cross-sectional area of the conductor is reduced while reducing the thickness of the male terminal insertion cylinder part to facilitate the elastic deformation of the male terminal insertion cylinder part and reducing the insertion force of the male terminal into the male terminal insertion cylinder part. It is possible to secure a large amount.

It should be noted that the circumferential position of the second separation portion provided in the male terminal insertion tube portion can be arbitrarily set depending on conditions such as the arrangement region of the female terminals. For example, it may be provided at a position facing the first separation part in the direction perpendicular to the axis of the male terminal insertion cylinder part, and the first separation part and the second separation part are separated by 90 ° in the circumferential direction of the male terminal insertion cylinder part. The overlapping plate portion and the extending plate portion may be configured to protrude in the orthogonal direction.

According to a fifth aspect of the present invention, there is provided the male terminal insertion tube in the longitudinal direction of the female terminal fitting between the wire connecting portion and the pair of overlapping plate portions in the longitudinal direction of the female terminal fitting. The part is provided.

According to this aspect, in the female terminal fitting, the electric wire connecting portion and the pair of overlapping plate portions are provided on both sides of the male terminal insertion tube portion therebetween. Thus, there is no need to provide a biasing means for urging the pair of overlapping plate portions between the connection portion where the male terminal is pressed and the wire connection portion, and the current between the connection portion of the male terminal and the wire connection portion can be reduced. The route can be shortened. Therefore, the conductor resistance can be reduced and the performance of the female terminal can be improved.

According to a sixth aspect of the present invention, in the one according to the fourth or fifth aspect, the female terminal fitting is connected to one of the pair of overlapping plate portions connected to one of the first separation portions, A peripheral wall of the male terminal insertion tube portion extending from one of the first separation portions to one of the second separation portions and one of the extending plate portions extending from one of the second separation portions are integrally configured. A first plate metal fitting, the other of the pair of overlapping plate portions connected to the other of the first separation portion, and the male terminal insertion tube portion extending from the other of the first separation portion to the other of the second separation portion. A second plate metal fitting that integrally constitutes the peripheral wall and the other of the extended plate portion extending from the other of the second separation portion, the first plate metal fitting and the second plate metal fitting By overlapping each other, the male terminal is connected to the longitudinal center portion of the first and second plate fittings. The urging means is configured such that a through-tube portion is configured, the electric wire connecting portion is configured on the proximal end side in the longitudinal direction, and the pair of overlapping plate portions are superimposed on each other on the distal end side in the longitudinal direction. It is arrange | positioned and the board thickness dimension of said 1st board metal fitting and said 2nd board metal fitting mutually differs.

According to this aspect, the first plate fitting and the second plate fitting are overlapped with each other, so that the male terminal insertion tube portion, the electric wire connecting portion disposed on both sides thereof, and the biasing portion of the pair of overlapping plate portions Therefore, the female terminal of the present invention can be easily manufactured. And since the female terminal metal fitting is comprised including the 1st board metal fitting and the 2nd board metal fitting, the plate | board thickness dimension of each board metal fitting can mutually differ. Therefore, it is possible to adjust the plate thickness of the first plate metal fitting and the second plate metal fitting according to the required characteristics, and to improve the design freedom of the female terminal.

According to a seventh aspect of the present invention, in the above-described sixth aspect, the first plate metal fitting has a flat plate shape, and the second plate metal fitting overlapped with the first plate metal fitting is the longitudinal member. Both end portions in the direction are plate-shaped, and the peripheral wall of the male terminal insertion cylinder portion is formed in the center portion in the longitudinal direction, and the convex cross section is convex in the direction away from the first plate metal fitting in the plate width direction. The first plate metal fitting has a plate thickness dimension larger than that of the second plate metal fitting.

According to this aspect, the entire plate is flat, and the first plate with a large plate thickness has a small plate thickness, both sides in the longitudinal direction are flat, and the central portion in the longitudinal direction is the peripheral wall of the male terminal insertion tube portion. A female terminal metal fitting is configured by overlapping the second plate metal fittings that are convex portions constituting the. Therefore, when the male terminal is inserted into the male terminal insertion tube portion, the convex portion having a small plate thickness can be elastically deformed preferentially, and the insertion force of the male terminal can be advantageously reduced. And since the board thickness dimension of a 1st board metal fitting can be ensured large, the cross-sectional area of an electric wire connection part can be hold | maintained advantageously, and the amount of electric current can also be ensured.

According to an eighth aspect of the present invention, in the above-described sixth aspect, the first plate fitting is formed into a flat plate shape, and the second plate fitting overlapped with the first plate fitting is the longitudinal Both end portions in the direction are plate-shaped, and the peripheral wall of the male terminal insertion cylinder portion is formed in the center portion in the longitudinal direction, and the convex cross section is convex in the direction away from the first plate metal fitting in the plate width direction. The first plate metal fitting has a plate thickness dimension smaller than that of the second plate metal fitting.

According to the present aspect, the first plate metal fitting having a large plate thickness as a whole and having a large plate thickness has a plate thickness on both sides in the flat plate shape and a central portion in the longitudinal direction at the peripheral wall of the male terminal insertion tube portion. A female terminal metal fitting is configured by overlapping the second plate metal fittings that are convex portions constituting the. Therefore, when the male terminal is inserted into the male terminal insertion tube portion, it is possible to improve the adhesion of the convex portion having a large plate thickness to the male terminal, and to reduce the resistance between the male and female terminals. It is possible to improve the performance of the female terminal.

A ninth aspect of the present invention is the one described in any one of the first to eighth aspects, wherein the male terminal insertion tube portion has a rhombic cross-sectional shape.

According to this aspect, the male terminal insertion tube portion has a rhombus cross-sectional shape. Thereby, the male terminal inserted in the male terminal insertion cylinder part can be stably held by the four sides of the rhombus. Thereby, the position of a contact can be fixed compared with the case where a male terminal insertion cylinder part is circular cross-sectional shape. Therefore, the male terminal can be stably held at the position of the contact, and manufacturing management can be easily performed by observing the variation in the position of the contact.

According to a tenth aspect of the present invention, in the one described in any one of the first to ninth aspects, the inner surface of the male terminal insertion tube portion gradually moves toward a distal end side in the press-fitting direction of the male terminal. The taper shape has a small diameter.

According to this aspect, since the inner surface of the male terminal insertion tube portion has a tapered shape with a gradually decreasing diameter toward the distal end side in the press-fitting direction of the male terminal, the male terminal is inserted into the male terminal insertion tube portion. The initial insertion force can be reduced. In particular, when the tip of the male terminal has a tapered shape similar to the inner surface of the male terminal insertion cylinder, no insertion force is generated until the male terminal is completely press-fitted into the male terminal insertion cylinder. When the male terminal is pulled out from the male terminal insertion tube portion, it is possible to pull it a little. Therefore, the insertion / extraction force of the male terminal with respect to the male terminal insertion tube portion can be greatly reduced.

An eleventh aspect of the present invention is the one described in the first aspect, wherein the female terminal fitting is connected to the pair of first separation portions and protrudes outward. And a pair of extending plate portions extending outward from the projecting end portions. The pair of extending plate portions are overlapped with each other to form an electric wire connecting portion, A second separation portion extending over the entire length in the axial direction is provided at another place in the circumferential direction of the terminal insertion tube portion.

According to this aspect, the pair of extending plate portions further extend from the protruding end portions of the pair of overlapping plate portions, and the pair of extending plate portions are overlapped to constitute the electric wire connecting portion. In addition, the second separation part is provided and separated at one place in the other circumferential direction of the male terminal insertion cylinder part separated from the overlapping plate part and the wire connection part. Therefore, it is possible to advantageously reduce the insertion force of the male terminal into the male terminal insertion cylinder while securing excellent conduction stability with the electric wire.

A twelfth aspect of the present invention is the one described in any one of the first to eleventh aspects, further comprising a case having an accommodation space assembled to the female terminal fitting, The housing space is disposed above the overlapping plate portion, and the biasing means includes a spring member and is housed in the housing space of the case. It is hold | maintained and the said spring member is hold | maintained in the compression state between the opposing wall to the said laminated board part of the said laminated board part and the said case.

According to this aspect, the urging means is constituted by the spring member accommodated in the housing space of the case, and the housing space of the case is disposed above the pair of overlapping plate portions where the female terminal fittings are overlapped with each other. It is assembled in the state that was done. Therefore, the urging means can be stably held with respect to the female terminal. In addition, since the biasing means does not affect the structure of the connection portion of the female terminal that is electrically connected to the male terminal, the degree of freedom of the structure of the connection portion of the female terminal can be increased. Here, as a spring member, a coil spring, a leaf | plate spring, a disc spring, etc. can be utilized, for example.

A thirteenth aspect of the present invention is the apparatus according to any one of the first to twelfth aspects, wherein the urging means includes a coil spring.

According to this aspect, since the urging means includes the coil spring, it is possible to ensure a large amount of deflection of the urging means for urging the pair of overlapping plate portions in the overlapping direction. Therefore, it is possible to reduce the spring constant while realizing a compact configuration by arranging the urging means in the limited housing space. Therefore, even if a dimensional error of parts or the like occurs, a change in contact pressure between the male and female terminals can be suppressed to a small level.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 6 show a female terminal 10 as a first embodiment of the present invention. The female terminal 10 has a female terminal fitting 16 including a connection portion 14 that is electrically connected to a male terminal 12 having a substantially cylindrical pin shape. Furthermore, the female terminal 10 has a case 20 having an accommodation space 18 that is assembled to the female terminal fitting 16. In the following description, “upper” means the upper side in FIGS. 1, 4 to 6, “lower” means the lower side in FIGS. 1, 4 to 6, and “front” means the left side in FIGS. The rear direction means the right side in FIGS. 2 to 4, the longitudinal direction means the left-right direction in FIGS. 2 to 4, and the width direction means the up-down direction in FIGS.

As shown in FIG. 1 and FIG. 4, the female terminal fitting 16 is configured by using a strip-shaped metal flat plate 22, and the metal flat plate 22 constituting one of the pair of overlapping

plate portions

25 a and 25 b 25 a. One end portion 23 in the longitudinal direction is folded toward the other end portion 24 side (right side in FIGS. 4 to 5). The one end 23 is overlapped with the other 25b of the pair of overlapping

plate portions

25a and 25b provided on the other end 24 side (the central portion in FIGS. 4 to 5), whereby the longitudinal direction of the metal flat plate 22 (FIG. 4). The middle part in the left-right direction is curved. Accordingly, the male terminal 12 is inserted into a substantially cylindrical male terminal that has a maximum inner diameter dimension: r smaller than the maximum outer diameter dimension: t and opens on both sides in the width direction (direction perpendicular to the paper surface in FIGS. 4 to 5). A cylindrical portion 26 is formed. That is, the male terminal insertion cylinder portion 26 is configured such that the male terminal 12 is press-fitted. And the connection part 14 is comprised by the inner surface 28 of the male terminal insertion cylinder part 26. As shown in FIG. As a result, one position in the circumferential direction of the male terminal insertion tube portion 26 (in the diagonally lower right side in FIG. 4) is the axial direction of the male terminal insertion tube portion 26 (direction perpendicular to the paper surface in FIGS. 4 to 5). A pair of

first separation parts

29 and 29 are formed by being separated over the entire length. Also, a pair of overlapping

plate portions

25a and 25b are provided which are connected to the pair of

first separation portions

29 and 29 and are spaced apart from each other and project outward (to the right in FIGS. 4 to 5). . Further, a wire connecting portion 30 is provided on the other end portion 24 side in the longitudinal direction of the metal flat plate 22 (right side in FIGS. 4 to 5). The female terminal fitting 16 having such a structure is made of various metal materials having conductivity and capable of being pressed or stamped, such as brass, copper, copper alloy, aluminum, and aluminum alloy. It is formed using.

In the female terminal fitting 16, the core wire 34 of the electric wire 32 is conductively connected to the female terminal fitting 16 at the electric wire connecting portion 30. More specifically, in the electric wire 32, a core wire 34 obtained by bundling a plurality of metal wires such as copper, aluminum, or the like, which is a conductor, is covered with an insulating coating 36 having an electrical insulation property such as ethylene resin or styrene resin. It is structured. Then, the core wire 34 exposed by peeling off the insulation coating 36 at the end of the electric wire 32 is fixed to the electric wire connection portion 30 of the female terminal fitting 16 by using a known technique such as resistance welding, for example. Is electrically connected to the female terminal fitting 16.

As shown in FIGS. 1 to 3, both side edges in the width direction (vertical direction in FIGS. 2 to 3) of the other 25b of the pair of overlapping

plate portions

25a and 25b of the metal flat plate 22 constituting the female terminal fitting 16 The part is provided with a pair of engaging

projections

38, 38 each having a substantially rectangular plate shape projecting outward in the width direction at two locations separated in the longitudinal direction.

The case 20 is assembled to the female terminal fitting 16 having such a configuration (see, for example, FIG. 4). The case 20 is formed using various metal materials that can be pressed or punched, such as brass, copper, copper alloy, aluminum, aluminum alloy, and stainless steel. The case 20 is assembled to the female terminal fitting 16 so that the accommodation space 18 is disposed above one of the pair of overlapping

plate portions

25a and 25b of the female terminal fitting 16. More specifically, in the assembled state, the case 20 has a substantially rectangular flat plate-shaped facing wall 40 that faces one side 25a of the pair of overlapping

plate portions

25a and 25b via the accommodation space 18. Further, the case 20 has a pair of substantially rectangular flat plate-

like wall portions

42 and 42 extending downward from both side edge portions in the width direction (the vertical direction in FIG. 2) of the facing wall 40. The housing space 18 is constituted by the wall 40 and the pair of

wall portions

42, 42. Further, the case 20 includes a caulking portion 44 having a substantially rectangular flat plate shape projecting downward at the extended end portion of the pair of

wall portions

42 and 42. Further, both side edges in the width direction (left and right direction in FIG. 2) located on the other 25b (see FIG. 5) of the pair of overlapping

plate portions

25a and 25b in the wall portion 42 on one side (lower side in FIG. 2). The part has a substantially flat engagement protrusion 46 that protrudes outward in the width direction and is bent outward in the plate thickness direction (vertical direction in FIG. 2). In addition, the coil spring holding walls projecting downward at substantially the entire length in the width direction (vertical direction in FIG. 2) at both side edges in the longitudinal direction (left and right direction in FIG. 2) of the opposing wall 40. 48 is provided (see FIGS. 1 and 4).

The case 20 configured as described above has a pair of overlapping

plate portions

25a and 25b in a state in which a metal coil spring 50, which is a spring member that constitutes a biasing means, is accommodated in the accommodation space 18. (See, for example, FIG. 4). More specifically, with the coil spring 50 disposed in the housing space 18 of the case 20, the case 20 is placed above one of the pair of overlapping

plate portions

25 a and 25 b of the female terminal fitting 16. Yes. The caulking portion 44 of the case 20 is inserted between a pair of engaging

projections

38 and 38 provided on the side edge portion of the other 25b of the pair of overlapping

plate portions

25a and 25b, and then the width direction (in FIG. 3). Bend inward and squeeze inward. Accordingly, the case 20 is fixed in a state where the extended end portions of the pair of

wall portions

42 and 42 are placed on the pair of engaging

protrusions

38 and 38, and the coil spring 50 accommodated in the case 20 is fixed. It is indirectly held by the female terminal fitting 16. In addition, the coil spring 50 is held in a compressed state between one of the pair of overlapping

plate portions

25 a and 25 b and the facing wall 40 of the case 20. In this way, the pair of overlapping

plate portions

25a and 25b are urged toward the direction in which the pair of overlapping

plate portions

25a and 25b approach each other (direction of arrow A in FIGS. 4 and 6) by the coil spring 50 held in a compressed state. That is, a coil spring 50 that is an urging means for urging the pair of overlapping

plate portions

25a and 25b in the approaching direction is disposed and held between the electric wire connecting portion 30 and the male terminal insertion tube portion 26. .

In the present embodiment, since the spring member constituting the biasing means is configured using the coil spring 50 in this way, a large amount of deflection can be ensured. Thereby, the coil spring 50 having a small spring constant can be compactly disposed in the accommodation space 18 which is a limited accommodation space of the case 20. Therefore, even if the plate thickness of the metal flat plate 22 and the maximum inner diameter dimension r vary, the change in contact pressure between the female terminal 10 and the male terminal 12 can be kept small. Moreover, since the coil spring 50 which is an urging means is disposed and held between the wire connection portion 30 and the male terminal insertion tube portion 26, the separation distance of the male terminal insertion tube portion 26 from the wire connection portion 30 is small. It is secured. Thereby, the male terminal insertion cylinder part 26 can be advantageously protected from the thermal influence when the core wire 34 exposed to the end of the electric wire 32 is connected and fixed to the electric wire connection part 30 by welding or the like. It is possible to reduce or avoid the influence on the plating characteristics of the male terminal insertion tube portion 26 caused by the above.

The male terminal 12 is electrically connected to the female terminal 10 having such a configuration. More specifically, the male terminal 12 is press-fitted into the male terminal insertion tube portion 26 of the female terminal 10. One end 25a of the pair of overlapping

plate portions

25a, 25b is a male terminal with respect to the other 25b against the urging force urging the pair of overlapping

plate portions

25a, 25b toward each other by the coil spring 50. It is slid and displaced toward the insertion tube portion 26 side. Thereby, the male terminal insertion cylinder part 26 is elastically deformed in the diameter increasing direction, and the press-fitting of the male terminal 12 into the male terminal insertion cylinder part 26 is allowed. After the insertion, the inner surface 28 of the male terminal insertion cylinder part 26 constituting the connection part 14 is held in pressure contact with the male terminal 12 in a connected state by the elastic restoring force of the male terminal insertion cylinder part 26. ing. That is, the male terminal insertion tube portion 26 that is elastically deformable in the diameter increasing direction is held in a reduced diameter state by the coil spring 50 that constitutes the urging means. The contact pressure between the female terminal 10 and the male terminal 12 can be changed depending on the strength of the coil spring 50.

According to the female terminal 10 of the present embodiment having such a structure, the coil spring 50, which is a spring member constituting the urging means, is held by the female terminal fitting 16, so that the male terminal is conventionally used. There is no need to attach a separate spring member or the like after the terminal 12 is electrically connected to the female terminal 10. Therefore, the work process can be simplified, and a high contact pressure between the female terminal 10 and the male terminal 12 can be realized with excellent workability. Further, when the male terminal 12 is press-fitted into the male terminal insertion cylinder portion 26 of the female terminal 10, one side 25a of the pair of overlapping

plate portions

25a and 25b is against the urging force of the coil spring 50 that is urging means. The other 25b is slid and displaced toward the male terminal insertion tube portion 26 side. Thereby, the male terminal insertion cylinder part 26 is elastically deformed in the diameter increasing direction, and the press-fitting of the male terminal 12 into the male terminal insertion cylinder part 26 is permitted. As a result, the connection part 14 constituted by the inner surface 28 of the male terminal insertion cylinder part 26 is pressed against the male terminal 12 by the elastic restoring force of the male terminal insertion cylinder part 26, so that the connection between the female terminal 10 and the male terminal 12 is achieved. Large contact pressure is secured. Furthermore, the direction of slide displacement (left direction in FIG. 4) and the biasing direction by the coil spring 50 (direction of arrow A in FIGS. 4 and 6) are different. Therefore, it is possible to stably maintain the contact pressure state while advantageously reducing the insertion force when the male terminal 12 is inserted into the inner surface 28 of the male terminal insertion tube portion 26 constituting the connection portion 14 of the female terminal 10. It is possible. In addition, even when some external force is applied to the male terminal 12, the external force is transmitted radially outward of the male terminal insertion tube portion 26 of the female terminal 10, and the pair of overlapping

plate portions

25a and 25b are slid to each other. Is transmitted to. As a result, the direction in which the external force is transmitted is different from the direction in which the coil spring 50 is biased (the direction of arrow A in FIGS. 4 and 6). Therefore, it is possible to advantageously reduce or prevent the contact pressure between the female terminal 10 and the male terminal 12 from fluctuating due to an external force, so that improvement in conduction stability between the female terminal 10 and the male terminal 12 is also ensured. be able to.

In addition, the case 20 is held on the pair of overlapping

plate portions

25a and 25b in a state where the coil spring 50 that is a spring member that constitutes an urging means with respect to the accommodation space 18 is accommodated and disposed. Thus, the urging means can be stably held with respect to the female terminal 10. In addition, the biasing means does not affect the structure of the connection portion 14 of the female terminal 10 that is conductively connected to the male terminal 12, thereby increasing the degree of freedom in designing the structure of the connection portion 14 of the female terminal 10. be able to.

Moreover, in this embodiment, the male terminal insertion cylinder part 26 is provided at one place in the circumferential direction of the male terminal insertion cylinder part 26 by a simple structure in which the one end part 23 of the belt-shaped metal flat plate 22 is folded back to the other end part 24 side. Are provided with a pair of

first separating portions

29 and 29 separated over the entire length in the axial direction. Furthermore, it has a pair of overlapping

plate part

25a, 25b which is connected to a pair of

1st separation parts

29 and 29, and mutually spaced apart and protrudes outward. Therefore, the female terminal fitting 16 provided with the male terminal insertion tube portion 26 can be manufactured easily and with a high yield.

Next, the female terminal 52 according to the second embodiment of the present invention will be described in detail with reference to FIGS. About the member and site | part made into the same structure as the said embodiment, the code | symbol same as the said embodiment is attached | subjected in a figure, and those detailed description is abbreviate | omitted. In the present embodiment, the female terminal fitting 54 has a pair of second separation portions 58 extending along the entire axial length of the male terminal insertion tube portion 56 at another place in the circumferential direction of the male terminal insertion tube portion 56. This embodiment is different from the first embodiment in that 58 is further provided. More specifically, in the female terminal fitting 54, a pair of

first separation portions

29, 29 are formed at one place in the circumferential direction of the male terminal insertion tube portion 56 (left side in FIG. 10). A pair of overlapping

plate portions

25a and 25b that are connected to the

separation portions

29 and 29 and project outward (leftward in FIG. 10) are provided. In addition, a pair of second separation portions 58 is provided at another place in the circumferential direction of the male terminal insertion tube portion 56 that faces the pair of

first separation portions

29, 29 in the radial direction of the male terminal insertion tube portion 56. , 58 are formed. A pair of extending

plate portions

60, 60 that are connected to the pair of

second separating portions

58, 58 and project outward (rightward in FIG. 10) are further provided. The pair of overlapping

plate portions

25a and 25b are biased toward the direction approaching each other (the direction of the arrow in FIGS. 10 and 12), and the pair of extending

plate portions

60 and 60 are overlapped with each other. The electric wire connection part 30 is comprised by this. In the present embodiment, the pair of extending

plate portions

60, 60 are fixed and integrated with each other using any known means such as resistance welding. As a result, the male terminal insertion tube portion 56 is disposed between the wire connection portion 30 and the pair of overlapping

plate portions

25a and 25b in the longitudinal direction of the female terminal fitting 54 (left and right direction in FIG. 10). is there. In this embodiment, the female terminal fitting 54 is configured by using a strip-shaped metal flat plate 22, and one end 23 in the longitudinal direction of the metal flat plate 22 is on the other end 24 (left side in FIG. 10). It is folded in a double shape. In a state where the one end portion 23 is folded on the other end portion 24 (the center portion in FIG. 4), the intermediate portions in the longitudinal direction (left and right direction in FIG. 10) of the overlapping surface are separated from each other. By being bent, a substantially cylindrical male terminal insertion tube portion 26 is configured. In addition, the pair of extending

plate portions

60, 60 can constitute the electric wire connecting portion 30 in a state where they are overlapped with each other, and at the same time when the core wire 34 of the electric wire 32 is welded to the electric wire connecting portion 30. The efficiency of workability can be improved by welding to.

Also in the female terminal 52 of this embodiment having such a structure, the coil spring 50, which is a spring member constituting the biasing means, is held by the female terminal fitting 54 as in the first embodiment. Yes. Therefore, it is not necessary to attach a separate spring member or the like after the male terminal 12 is electrically connected to the female terminal 10 as in the prior art. Therefore, the work process can be simplified, and a high contact pressure between the female terminal 10 and the male terminal 12 can be realized with excellent workability. Further, when the male terminal 12 is press-fitted into the male terminal insertion tube portion 56 of the female terminal 10, one of the pair of overlapping

plate portions

25a and 25b is opposed to the urging force of the coil spring 50 as the urging means. The other 25b is slid and displaced toward the male terminal insertion tube portion 56 side. Thereby, the male terminal insertion cylinder part 56 is elastically deformed in the diameter increasing direction, and the press-fitting of the male terminal 12 into the male terminal insertion cylinder part 56 is allowed. Therefore, the connection part 14 constituted by the inner surface 28 of the male terminal insertion cylinder part 56 is pressed against the male terminal 12 by the elastic restoring force of the male terminal insertion cylinder part 56, and the female terminal 10 and the male terminal 12 are connected. Large contact pressure is secured.

According to the present embodiment, the pair of extending

plate portions

60, 60 extending from the pair of

second separating portions

58, 58 provided in the male terminal insertion tube portion 56 are overlapped with each other, thereby connecting the electric wires. A portion 30 is provided. Thereby, since both of a pair of

extension plate parts

60 and 60 extended from a pair of 2nd isolation |

separation parts

58 and 58 can be made into an electric current path, a pair of

extension plate parts

60 and 60 mutually overlap. Thus, the cross-sectional area of the electric wire connecting portion 30 can be advantageously ensured, and more current can be passed. Therefore, the cross-sectional area of the wire connecting portion 30 can be ensured while reducing the thickness of the male terminal insertion tube portion 56. Therefore, the elastic deformation of the male terminal insertion cylinder portion 56 is facilitated, and the insertion force of the male terminal 12 to the male terminal insertion cylinder portion 56 can be reduced, and the cross-sectional area of the current path can be ensured. Moreover, since the male terminal insertion cylinder part 56 is comprised between the electric wire connection part 30 and a pair of overlapping

board parts

25a and 25b, the male terminal 12 is press-contacted like said 1st embodiment. There is no need to dispose the coil spring 50 as the urging means between the male terminal insertion tube portion 56 and the wire connection portion 30. Thereby, the electric current path between the connection part 14 of the male terminal 12 and the electric wire connection part 30 can be shortened, and reduction of resistance can be aimed at.

Subsequently, the female terminal 62 as the third embodiment of the present invention will be described in detail with reference to FIG. About the member and site | part made into the same structure as the said embodiment, the code | symbol same as the said embodiment is attached | subjected in a figure, and those detailed description is abbreviate | omitted. In the present embodiment, the female terminal fitting 64 includes a first plate fitting 66 and a second plate fitting 68, and the plate thickness dimensions of the first plate fitting 66 and the second plate fitting 68 are different from each other. An embodiment different from the second embodiment is shown. More specifically, the first plate metal fitting 66 includes one pair 25b of a pair of overlapping

plate portions

25a and 25b connected to one side (lower side in FIG. 13) of the pair of

first separation portions

29 and 29, and a pair of The peripheral wall of the male terminal insertion cylinder portion 70 extending from one side of the

first separation portions

29, 29 to one side (lower side in FIG. 13) of the pair of

second separation portions

58, 58, and the pair of

second separation portions

58 , 58 are integrally formed with one side (lower side in FIG. 13) of the pair of extending

plate portions

60, 60 extending from one side. The second plate metal 68 includes a pair 25a of a pair of overlapping

plate portions

25a, 25b connected to the other side (upper side in FIG. 13) of the pair of

first separation portions

29, 29, a pair of

first separation portions

29, 29 extends from the other side of the pair of

second separating portions

58, 58 to the other side of the pair of second separating portions 58, 58 (upper side in FIG. 13) and the other side of the pair of

second separating portions

58, 58. It forms by integrally comprising the other side (upper side in FIG. 13) of a pair of

extended plate parts

60 and 60 to take out. Then, the first plate fitting 66 and the second plate fitting 68 are overlapped with each other, so that the first plate fitting 66 and the second plate fitting 68 have a male portion at the center in the longitudinal direction (left and right direction in FIG. 13). The terminal insertion cylinder part 70 is comprised. On the base end side in the longitudinal direction (right side in FIG. 13), the electric wire connection portion 30 to which the first plate metal fitting 66 and the second plate metal fitting 68 are fixed is configured, and the distal end side in the longitudinal direction (left side in FIG. 13). Is provided with a coil spring 50 that constitutes an urging means for urging the pair of overlapping

plate portions

25a and 25b to overlap each other. In the present embodiment, the first plate fitting 66 and the second plate fitting 68 are configured by using

flat metal plates

72a and 72b, respectively, and the metal plate 72a is larger in thickness than the metal plate 72b. Has been. And the 1st plate metal fitting 66 is made into the substantially flat plate shape. The second plate fitting 68 overlapped with the first plate fitting 66 has both end portions in the longitudinal direction (left and right direction in FIG. 13) left flat, and the male terminal insertion tube portion 70 in the central portion in the longitudinal direction. The convex part 74 which protrudes over the board width direction is comprised by the convex cross section which comprises the surrounding wall of this, and becomes convex in the direction spaced apart from the 1st board metal fitting 66, and is comprised.

Also in the female terminal 62 of this embodiment having such a structure, the coil spring 50 that is a spring member constituting the biasing means is held by the female terminal fitting 64 as in the first embodiment. Yes. This eliminates the need to attach a separate spring member or the like after the male terminal 12 is electrically connected to the female terminal 10 as in the prior art. Therefore, the work process can be simplified, and a high contact pressure between the female terminal 10 and the male terminal 12 can be realized with excellent workability. Further, when the male terminal 12 is press-fitted into the male terminal insertion cylinder portion 70 of the female terminal 10, one of the pair of overlapping

plate portions

25a, 25b is opposed to the urging force of the coil spring 50 as urging means. The other 25b is slid and displaced toward the male terminal insertion tube portion 70 side. Thereby, the male terminal insertion cylinder part 70 is elastically deformed in the diameter increasing direction, and the press-fitting of the male terminal 12 into the male terminal insertion cylinder part 70 is allowed. As a result, the connection part 14 constituted by the inner surface 28 of the male terminal insertion cylinder part 70 is pressed against the male terminal 12 by the elastic return force of the male terminal insertion cylinder part 70, and the female terminal 10 and the male terminal 12 are connected. Large contact pressure is secured.

According to the present embodiment, the first plate fitting 66 and the second plate fitting 68 are overlapped with each other, whereby the male terminal insertion cylinder portion 70, the electric wire connection portion 30 provided on both sides thereof, and the coil spring as the biasing means. A pair of overlapping

plate portions

25a and 25b in which 50 is disposed can be provided. Thereby, the female terminal 62 of this invention can be manufactured easily. Further, since the plate thickness dimensions of the first plate fitting 66 and the second plate fitting 68 can be made different from each other, the plate thicknesses of the first plate fitting 66 and the second plate fitting 68 are adjusted according to the required characteristics. The degree of freedom in designing the female terminal 62 can be improved. Further, with respect to the flat plate-shaped first plate metal fitting 66 having a large plate thickness dimension, the plate thickness dimension is small, both sides in the longitudinal direction are flat, and the central portion in the longitudinal direction constitutes the peripheral wall of the male terminal insertion cylinder portion 70. The female terminal fitting 64 is configured by overlapping the second plate fitting 68 which is the portion 74. Therefore, when the male terminal 12 is inserted into the male terminal insertion cylinder portion 70, the convex portion 74 having a small plate thickness can be elastically deformed preferentially, which is advantageous in reducing the insertion force of the male terminal 12. Can be aimed at. And since the board thickness dimension of the 1st board metal fitting 66 can be ensured large, the cross-sectional area of the electric wire connection part 30 can be maintained advantageously, and the amount of electric current can also be ensured.

In addition, like the female terminal 76 as the fourth embodiment of the present invention shown in FIG. 14, the plate thickness dimension of the first plate fitting 78 may be made smaller than that of the second plate fitting 80. That is, the first plate metal fitting 78 has a flat plate shape. Both ends of the second plate fitting 80 overlapped with the first plate fitting 78 in the longitudinal direction (left-right direction in FIG. 14) have a flat plate shape, and the male terminal insertion cylinder portion 82 is formed at the center in the longitudinal direction. You may be comprised including the convex-shaped part 84 which protrudes over a board width direction by the convex cross section which comprises a surrounding wall and protrudes in the direction spaced apart from the 1st board metal fitting 78. FIG. When the convex part 84 which comprises the surrounding wall of the male terminal insertion cylinder part 82 is formed in the 2nd plate metal fitting 80 with a large plate | board thickness dimension like this embodiment, the male terminal 12 is connected to the male terminal insertion cylinder. The plate thickness dimension of the convex portion 84 that is in close contact with the portion 82 when inserted through the portion 82 is increased. Therefore, the resistance between the female terminal 76 and the male terminal 12 can be reduced.

Furthermore, like the female terminal 86 as the fifth embodiment of the present invention shown in FIG. 15, the male terminal insertion tube portion 88 may have a substantially rhombic cross-sectional shape with rounded corners. As a result, the male terminal 12 inserted through the male terminal insertion tube portion 88 can be stably held at the center of the four sides of the rhombus constituting the inner surface 28. That is, the position of the contact point that holds the inserted male terminal 12 can be fixed as compared with the case where the male terminal insertion cylinder portion 56 has a circular cross-sectional shape as in the second embodiment. Therefore, the male terminal 12 can be stably held at the position of the contact, and manufacturing management can be easily performed by observing the variation in the position of the contact. In order to further clarify the position of the contact, a known emboss may be projected on the inner surface 28 of the male terminal insertion tube 88. In the case of this embodiment, the emboss is provided at the center of the four sides of the rhombus. May be.

Alternatively, as in the female terminal 90 according to the sixth embodiment of the present invention shown in FIGS. 16 to 17, the inner surface 28 of the male terminal insertion tube portion 92 is pressed into the male terminal 94 (the left direction in FIG. 17). The taper may gradually have a smaller diameter toward the tip side (left side in FIG. 17). Accordingly, since the male terminal 94 is not brought into contact with the inner surface 28 when the male terminal 94 is inserted into the male terminal insertion tube portion 92, the initial insertion force of the insertion can be reduced. In particular, when the distal end surface 96 of the distal end portion of the male terminal 94 has a tapered shape similar to the inner surface 28 of the male terminal insertion tube portion 92 as in the present embodiment, the male terminal 94 is the male terminal insertion tube. The insertion force is not generated until the portion 92 is completely press-fitted. Therefore, when pulling out the male terminal 94 from the male terminal insertion tube portion 92, it is possible to pull it a little, and the insertion / extraction force of the male terminal 94 with respect to the male terminal insertion tube portion 92 can be greatly reduced. ing.

Subsequently, the female terminal 98 as the seventh embodiment of the present invention will be described in detail with reference to FIGS. About the member and site | part made into the same structure as the said embodiment, the code | symbol same as the said embodiment is attached | subjected in a figure, and those detailed description is abbreviate | omitted. In the present embodiment, the female terminal fitting 100 has a pair of second separation portions 104 extending along the entire axial length of the male terminal insertion tube portion 102 at another place in the circumferential direction of the male terminal insertion tube portion 102. This embodiment is different from the second embodiment in that 104 is provided. More specifically, the female terminal fitting 100 is provided with a pair of overlapping

plate portions

25a and 25b that are connected to the pair of

first separation portions

29 and 29 and project outward (rightward in FIG. 19). The coil spring 50 accommodated in the case 20 is disposed and held on the pair of overlapping

plate portions

25a and 25b. It further includes a pair of

extended plate portions

106 and 106 that extend outward from the protruding end portions of the pair of overlapping

plate portions

25a and 25b (to the right in FIG. 19). The pair of extending

plate portions

106 and 106 are overlapped with each other. For example, when the core wire 34 of the electric wire 32 is welded to the electric wire connecting portion 30, the pair of extending

plate portions

106 and 106 are also fixed to each other. It is integrated. In addition, a pair of

second separation portions

104 and 104 extending over the entire axial length of the male terminal insertion tube portion 102 are provided at another place in the circumferential direction of the male terminal insertion tube portion 102. The

second separation sections

104 and 104 are both free ends.

Also in the female terminal 98 of this embodiment having such a structure, the coil spring 50, which is a spring member constituting the biasing means, is held by the female terminal fitting 100 as in the first embodiment. Yes. Therefore, it is not necessary to attach a separate spring member or the like after the male terminal 12 is electrically connected to the female terminal 10 as in the prior art. Therefore, the work process can be simplified, and high contact pressure between the female terminal 10 and the male terminal 12 can be realized with excellent workability.

Moreover, according to this embodiment, a pair of

second separation parts

104, 104 extending over the entire axial length is provided at another place in the circumferential direction of the male terminal insertion tube part 102, The

second separation sections

104 and 104 are both free ends. As a result, when the male terminal 12 is press-fitted into the male terminal insertion tube portion 102, the male terminal insertion tube portion 102 is elastically expanded in the diameter increasing direction by displacing the pair of

second separation portions

104, 104 away from each other. The male terminal 12 is allowed to be press-fitted into the male terminal insertion tube portion 102 by being deformed. Therefore, it is possible to advantageously reduce the insertion force of the male terminal 12 into the male terminal insertion tube portion 102.

As mentioned above, although several embodiment of this invention was explained in full detail, this invention is not limited by these specific description. For example, in the above embodiment, the coil spring 50 is exemplified as the biasing means, but the biasing means is not limited to this, and for example, a spring member such as a leaf spring or a disc spring, a rubber elastic body, or the like. Any member that applies a known urging force, such as an elastic body, can be used. Moreover, in the said embodiment, although the coil spring 50 was indirectly hold | maintained at the female terminal metal fitting 16 via the case 20, you may hold | maintain directly.

Furthermore, in the said embodiment, although the electric wire 32 fixed to the electric wire connection part 30 extended in the direction orthogonal to the axial direction of the male terminal

insertion cylinder part

26,54,64,100, the male terminal insertion cylinder part 26 is extended. , 54, 64, 100 may be fixed to the wire connecting portion 30 so that the wire 32 extends in the axial direction. In addition, in the above embodiment, the case 20 is made of metal, but may be a member having sufficient rigidity, and synthetic resin or the like can be employed.

Moreover, in the said embodiment, although the male terminal

insertion cylinder part

26,56,70,82,92,102 showed the example which has a substantially cylindrical shape, and the male terminal insertion cylinder part 88 showed the example which has a substantially rhombus shape, The cross-sectional shape of the male terminal

insertion cylinder portions

26, 56, 70, 82, 88, 92, and 102 is not limited to the above, and is configured to be a rectangle, an ellipse, a polygon, or the like according to the cross-sectional shape of the inserted male terminal. It is also possible. And the position of the contact point with respect to the

male terminals

12 and 94 is provided on the inner surface 28 of the male terminal

insertion tube portion

26, 56, 70, 82, 88, 92, 102 having an arbitrary shape by projecting an emboss at an arbitrary position. May be clarified.

Furthermore, in the second to seventh embodiments, the circumferential position of the second separating portion 58 is provided at a position facing the first separating portion 29 in the direction perpendicular to the axis, but is not limited thereto. For example, the first separating portion 29 and the second separating portion 58 are provided at positions that are separated by 90 ° in the circumferential direction, and the overlapping

plate portions

25a and 25b and the extending plate portion 60 are configured to protrude in the orthogonal direction. May be. Thereby, the design freedom of

female terminal

52,62,76,86,90 can be improved.

10, 52, 62, 76, 86, 90, 98: female terminal, 12, 94: male terminal, 14: connection part, 16, 54, 64, 100: female terminal fitting, 18: accommodation space, 20:

case

22, 72a, b: metal flat plate, 23: one end, 24: other end, 25a, b: overlapping portion, 26, 56, 70, 82, 88, 92, 102: male terminal insertion tube portion, 28 : Inner surface (connection part), 29: first separation part, 30: electric wire connection part, 40: opposing wall, 50: coil spring (biasing means, spring member), 58, 104: second separation part, 60, 106 : Extension plate portion, 66, 78: First plate fitting, 68, 80: Second plate fitting, 74, 84: Convex portion

Claims

A female terminal fitting including a connection portion that is electrically connected to the male terminal;
Provided in the female terminal metal fitting, a male terminal insertion cylinder part in which the male terminal is press-fitted and constitutes the connection part by an inner surface;
A pair of the male terminal insertion cylinders are connected to a pair of first separation parts provided by being separated over the entire length in the axial direction so as to be separated from each other and project outward. A stack of plate parts,
A biasing means that is held by the female terminal fitting and biased in a direction in which the pair of overlapping plate portions are overlapped with each other to hold the male terminal insertion tube portion in a reduced diameter state;
When the male terminal is press-fitted into the male terminal insertion tube portion, the male terminal insertion tube portion is elastically deformed in the diameter increasing direction against the urging force of the urging means, so that the male terminal A female terminal that is allowed to be pressed into the terminal insertion tube.
The female terminal fitting is configured to include a strip-shaped metal flat plate, and one end of the metal flat plate constituting one of the pair of overlapping plate portions is folded back toward the other end, and the other 2. The male terminal insertion tube portion is provided by bending an intermediate portion in a longitudinal direction of the metal flat plate by being overlapped with the other of the pair of overlapping plate portions provided on the end side. Female terminal as described in.
The other end portion of the metal flat plate constituting the female terminal fitting is an electric wire connecting portion, and the pair of overlapping plate portions are biased in the approaching direction between the electric wire connecting portion and the male terminal insertion tube portion. The female terminal according to claim 2, wherein the biasing means is arranged and held.
The female terminal fitting is connected to the second separation portion and outwardly at a second separation portion extending over the entire length in the axial direction at another place in the circumferential direction of the male terminal insertion tube portion. The female terminal according to claim 1, further comprising a pair of projecting extending plate portions, wherein the pair of extending plate portions are overlapped with each other to constitute an electric wire connecting portion.
The female terminal according to claim 4, wherein the male terminal insertion tube portion is provided between the wire connection portion and the pair of overlapping plate portions in the longitudinal direction of the female terminal fitting.
The female terminal fitting includes one of the pair of overlapping plate portions connected to one of the first separation portions, and the male terminal insertion tube portion extending from one of the first separation portions to one of the second separation portions. A first plate fitting integrally forming a peripheral wall and one of the extension plate portions extending from one of the second separation portions; and the pair of overlapping plate portions connected to the other of the first separation portions. The other, the peripheral wall of the male terminal insertion tube portion extending from the other of the first separation portions to the other of the second separation portions, and the other of the extending plate portions extending from the other of the second separation portions. A first plate metal fitting and a second plate metal fitting which are integrally formed, and the first plate metal fitting and the second plate metal fitting are overlapped with each other, whereby the longitudinal center portion of the first and second plate metal fittings The male terminal insertion tube portion is configured, and the electric wire connection portion is configured on the base end side in the longitudinal direction. Said biasing means for biasing the superposed longitudinal direction of the distal end side of the pair of leaf portions to each other and are arranged,
The female terminal according to claim 4 or 5, wherein plate thickness dimensions of the first plate fitting and the second plate fitting are different from each other.
The first plate metal fitting has a flat plate shape, and the second plate metal fitting overlapped with the first plate metal fitting has a flat plate shape at both ends in the longitudinal direction, and the male terminal is inserted into the central portion in the longitudinal direction. A convex section projecting across the plate width direction with a convex cross section that is configured to form the peripheral wall of the cylindrical portion and project in a direction away from the first plate metal fitting; The female terminal according to claim 6, wherein the thickness of the plate is larger than that of the two-plate metal fitting.
The first plate metal fitting has a flat plate shape, and the second plate metal fitting overlapped with the first plate metal fitting has a flat plate shape at both ends in the longitudinal direction, and the male terminal is inserted into the central portion in the longitudinal direction. A convex section projecting across the plate width direction with a convex cross section that is configured to form the peripheral wall of the cylindrical portion and project in a direction away from the first plate metal fitting; The female terminal according to claim 6, wherein the thickness of the plate is smaller than that of the two-plate metal fitting.
The female terminal according to any one of claims 1 to 8, wherein the male terminal insertion tube portion has a rhombus cross-sectional shape.
The female terminal according to any one of claims 1 to 9, wherein the inner surface of the male terminal insertion tube portion has a tapered shape with a gradually decreasing diameter toward a distal end side in the press-fitting direction of the male terminal.
The female terminal fitting further includes a pair of extending plate portions that extend outward from the protruding end portions of the pair of overlapping plate portions that are connected to the pair of first separating portions and protrude outward. And the pair of extending plate portions are overlapped with each other to constitute an electric wire connecting portion,
2. The female terminal according to claim 1, wherein a second separation portion extending over the entire length in the axial direction is provided at another place in the circumferential direction of the male terminal insertion tube portion.
It further has a case having an accommodation space assembled to the female terminal fitting, and the accommodation space is disposed above the overlapping plate part,
The urging means includes a spring member and is accommodated in the accommodation space of the case, so that the female terminal metal fitting is held, and the overlapping plate portion and the case are opposed to the overlapping plate portion. The female terminal according to any one of claims 1 to 11, wherein the spring member is held in a compressed state between the wall and the wall.
The female terminal according to any one of claims 1 to 12, wherein the biasing means includes a coil spring.