JP2021047994A - Female terminal piece for connector and terminal piece pair - Google Patents

Abstract

To prevent poor contact in which contact of only one side of a pair of male contact portions and a pair of female contact portions is achieved, and to secure the necessary contact pressure between a female side contact portion and a male side contact portion.SOLUTION: A female terminal piece 10 for a connector, which is connected to a male terminal piece 60 for a connector having a pair of male contact portions 70 and 72 facing each other at intervals in a direction orthogonal to the connector insertion/removal direction includes a housing portion 12 including a lead wire connection portion 25 to which a lead wire is connected, and a strip-shaped spring piece 16 that forms a cantilever beam including a base end 14 connected to the housing portion 12, and the spring piece 16 includes an arm piece 26 extending from the base end 14 in the connector insertion direction, and a tip piece 28 that forms a pair of female side contacts 30 and 32 that are to be in contact with the male side contact portions 70 and 72, which are bent into a hook shape on the free end side of the arm piece 26 and face in directions separated from each other in a direction orthogonal to the connector insertion/removal direction.SELECTED DRAWING: Figure 6

Description

The present invention relates to a female terminal piece for a connector and a pair of terminal pieces.

As female terminals for connectors, each male contact portion of a fork-shaped male terminal piece (female contact) having a pair of male contact portions facing each other at intervals in a direction orthogonal to the connector insertion / removal direction. A female terminal piece (male contact) including a pair of male and female contact portions on each outer surface in opposite directions so as to make conductive contact with the female is known (for example, Patent Document 1).

Jitsukaisho 59-17570

The male-side and female-side terminal pieces described above secure the contact pressure between the male-side contact portion and the female-side contact portion only by elastic deformation of the male-side terminal piece, and the male-side terminal piece and the female-side terminal piece If there is a mutual misalignment in the direction orthogonal to the connector insertion / removal direction, there is a risk of poor contact in which only one side of the pair of male contact portions and the pair of female contact portions come into contact with each other. If flexibility is given to this misalignment, it tends to be difficult to secure the contact pressure between the female contact portion and the male contact portion.

The problem to be solved by the present invention is that the male terminal piece and the female terminal piece have high flexibility against mutual misalignment in the direction orthogonal to the connector insertion / removal direction, and a pair of male contact portions. In addition to making it difficult for poor contact to occur in which only one side of the pair of female contact portions comes into contact with each other, the necessary contact pressure between the female contact portion and the male contact portion is ensured.

The female terminal piece for a connector according to one embodiment of the present invention is a male terminal for a connector having a pair of male contact portions (70, 72) facing each other at intervals in a direction orthogonal to the connector insertion / removal direction. A female terminal piece (10) for a connector connected to a piece (60), a housing portion (12) including a lead wire connecting portion (25) to which a lead wire is connected, and a base end coupled to the housing portion. It has a strip-shaped spring piece (16) including (14) and forms a cantilever beam, and the spring piece includes an arm piece portion (26) extending from the base end in the connector insertion direction and the arm. A pair of female contact portions (30) that are bent into a hook shape on the free end side of one portion and are oriented away from each other in a direction orthogonal to the connector insertion / extraction direction and should be in contact with the male contact portion. , 32) with a tip piece (28) forming.

According to this configuration, the elastic deformation of the arm piece provides high flexibility against mutual misalignment in the direction orthogonal to the connector insertion / removal direction between the male terminal piece and the female terminal piece, and a pair of males. Poor contact in which only one side of the side contact portion and the pair of female side contact portions contacts is less likely to occur. The tip piece can be set to a high rigidity different from that of the arm piece depending on the hook shape, and the necessary contact pressure between the female contact part and the male contact part can be secured.

The female terminal piece for a connector preferably includes an inclined portion (26B) in which the arm piece portion is inclined and extends with respect to the connector insertion / removal direction.

According to this configuration, the arm piece becomes long without increasing the size of the female terminal piece for the connector.

In the female terminal piece for a connector, preferably, the arm piece portion includes an orthogonal portion (26A) extending orthogonally to the connector insertion / removal direction on the proximal end side of the inclined portion.

According to this configuration, a crank-shaped portion is formed on the base end side of the arm piece portion, and the arm piece portion pivoting on the base end side is easily elastically deformed.

In the female terminal piece for a connector, preferably, the housing portion includes a pair of side walls (20, 22) located on both sides of the spring piece.

According to this configuration, the spring piece is protected from both sides, and the durability of the spring piece is improved.

In the female terminal piece for a connector, preferably, the pair of side walls includes a portion extending on both sides of the tip piece portion so as to correspond to the entire tip piece portion.

According to this configuration, the tip end piece portion of the spring piece is reliably protected from both sides, and the durability of the spring piece is improved.

In the female terminal piece for a connector, preferably, the housing portion extends in a direction orthogonal to the connector insertion / removal direction at a predetermined distance on the front side of the tip piece portion in the connector insertion direction. It has an anterior wall (36) to be received between the male side contacts when the connector is inserted.

According to this configuration, the front of the spring piece is protected and the durability of the spring piece is improved.

The female terminal piece for a connector preferably includes a cut-up piece (38, 39) in which the housing portion is surrounded by the tip piece portion at a predetermined interval.

According to this configuration, excessive elastic deformation of the spring piece is suppressed, and the durability of the spring piece is improved.

The terminal pair according to one embodiment of the present invention is a terminal pair of a male terminal piece for a connector (60) and a female terminal piece for a connector (10) that can be inserted and removed from each other, and is a male side for the connector. The terminal pieces consist of a base portion (64) extending in a direction orthogonal to the connector insertion / removal direction and a pair of leg portions extending from the base portion in the connector insertion / removal direction at intervals in a direction orthogonal to the base portion (64). 66, 68), the pair of legs includes a pair of male contact portions (70, 72) facing each other, and the female terminal piece for the connector is the female terminal piece for the connector. is there.

According to this configuration, the elastic deformation of the arm piece provides high flexibility against mutual misalignment in the direction orthogonal to the connector insertion / removal direction between the male terminal piece and the female terminal piece, and a pair of males. Poor contact in which only one side of the side contact portion and the pair of female side contact portions contacts is less likely to occur. The tip piece can be set to a high rigidity different from that of the arm piece depending on the hook shape, and it is necessary to connect the female side contact part and the male side contact part under the elastic deformation of the leg part and the tip piece part when the terminal piece is connected. Contact pressure can be secured.

According to the female terminal piece for a connector according to the present invention, there is high flexibility against mutual misalignment in the direction orthogonal to the connector insertion / removal direction with the male terminal piece for a connector, and a pair of male contact portions It is difficult for poor contact to occur in which only one side of the pair of female contact portions contacts, and the necessary contact pressure between the female contact portion and the male contact portion is secured.

Perspective view of an electric connector device including a pair of terminals according to the present invention. Partial cross-sectional perspective view of a female connector including a pair of terminals according to the present invention. Perspective view of female terminal piece for connector according to this embodiment Partial cross-sectional perspective view of the female terminal piece for the connector according to this embodiment. Vertical cross-sectional view of the female terminal piece for the connector according to this embodiment. Explanatory drawing which shows the connection process of a pair of terminals by this Embodiment

Hereinafter, one embodiment of the terminal piece pair and the female terminal piece for the connector according to the present invention will be described with reference to FIGS. 1 to 6. In the present embodiment, the connector insertion / removal direction is the vertical direction, and the front-rear direction and the left-right direction are defined as shown in the figure. Further, the connector insertion direction is upward and the connector extraction direction is upward.

First, referring to FIGS. 1 and 2, the other side terminals of the female side connector 40 and the female side terminal piece 10 into which the female side terminal piece 10 for the connector (hereinafter referred to as the female side terminal piece 10) according to the present embodiment is incorporated. The male side connector 80 in which the male side terminal piece 60 for a connector (hereinafter, referred to as a male side terminal piece 60), which is a piece, is incorporated will be described.

The female side connector 40 is a cable side connector, and has a rectangular parallelepiped female side connector housing 42 made of a resin molded product. The female connector housing 42 holds 10 female terminal pieces 10 arranged in two rows in the front-rear direction and in the left-right direction in each row. The end of the insulation-coated cable 50 is connected to each female terminal piece 10.

The male connector 80 is a connector mounted on a printed wiring board (not shown), and has a box-shaped male connector housing 82 having an upper opening made of a resin molded product. The male connector housing 82 holds 10 male terminal pieces 60 in the same arrangement as the female terminal pieces 10 in the female connector housing 42.

Each male terminal piece 60 is made of metal, extends in a direction (front-back direction) orthogonal to the connector insertion / removal direction (vertical direction), and is a conductive connection portion with a printed wiring board, as shown in FIG. It has a base 64 including 62, and a pair of first leg 66 and second leg 68 made of cantilever beams extending upward (connector insertion / removal direction) at intervals in the front-rear direction from the base 64.

A pair of flat surfaces on which the first leg portion 66 and the second leg portion 68 face each other in the front-rear direction form a pair of the first male side contact portion 70 and the second male side contact portion 72. The first male side contact portion 70 side of the tip of the first leg portion 66 has a large chamfered inclined surface 66A.

Next, the female terminal piece 10 according to the present embodiment will be described with reference to FIGS. 3 to 6.

Each female terminal piece 10 is a press-molded product of a metal plate, and has a housing portion 12 and a strip-shaped spring piece 16 including a base end portion 14 coupled to the housing portion 12 to form a cantilever. ..

The housing portion 12 includes a strip-shaped substrate portion 18 extending in the connector insertion / removal direction, and a left side wall piece 20 and a right side wall rising forward from the left and right side edges of the substrate portion 18 on the connector insertion direction side (lower side). It has a piece 22 and a pair of left and right coated barrel pieces 24 and a core wire barrel piece (lead wire connecting part) 25 rising from the left and right side edges of the substrate portion 18 on the connector extraction direction side (upper side).

The coated barrel piece 24 is crimped to lock the insulating coated portion 52 of the insulating coated cable 50 to the substrate portion 18 (see FIG. 2). The core wire barrel piece 25 is crimped to lock the core wire (lead wire) 54 of the insulating coated cable 50 to the substrate portion 18 (see FIG. 2).

The base end portion 14 of the spring piece 16 is composed of a piece portion bent 90 degrees from the tip edge of the left side wall piece 20 of the housing portion 12 to the right side wall piece 22 side and is coupled to the housing portion 12. The spring piece 16 is bent into a relatively small hook shape on the free end side of the arm piece 26 extending from the base end 14 toward the connector insertion direction (downward) and on the free end side of the arm piece 26. It integrally has the tip piece 28.

The arm piece 26 is provided from the relatively short orthogonal portion 26A and the orthogonal portion 26A extending substantially orthogonal to the connector insertion / extraction direction toward the base end portion 14 side with respect to the connector insertion / removal direction. Includes a relatively long inclined portion 26B that is inclined and extends toward the substrate portion 18 side. In other words, the orthogonal portion 26A is on the base end portion 14 side of the inclined portion 26B, and forms a crank shape in cooperation with the base end portion 14 and the inclined portion 26B. The inclined portion 26B is set to be long without increasing the size of the female terminal piece 10 due to the inclination.

The tip piece 28 is an arc-shaped curved portion 28A extending from the free end of the inclined portion 26B toward the connector insertion direction, and the left wall piece 20 substantially orthogonal to the connector insertion / removal direction from the free end of the curved portion 28A. , The relatively short orthogonal portion 28B extending toward the tip edge side of the right wall piece 22 and the relatively short portion curved from the free end of the orthogonal portion 28B and extending in the connector extraction direction (upward direction). It includes a free end piece portion 28C and has higher compression resistance (rigidity) in the front-rear direction than the arm piece portion 26.

On the outer surface of the curved portion 28A and the outer surface of the free end piece portion 28C, a first female side contact portion 30 and a second female side contact portion 32 facing in a direction orthogonal to the connector insertion / removal direction (front-rear direction) are provided. It is provided. The first female side contact portion 30 and the second female side contact portion 32 are at substantially the same position when viewed in the connector insertion / removal direction, and each protrudes outward by embossing. The dimension A of the protruding end in the direction (front-back direction) orthogonal to the connector insertion direction between the first female side contact portion 30 and the second female side contact portion 32 is the first male side contact portion 70 and the second male side contact portion 72. It is larger than the dimension B in the direction (front-back direction) orthogonal to the connector insertion direction with and (see FIG. 6 (A)).

The board portion 18 exists only up to the position in the connector insertion direction corresponding to the intermediate portion of the inclined portion 26B when viewed in the connector insertion direction, and does not exist on the front side (lower side) in the connector insertion direction. As a result, the tip piece 28 of the spring piece 16 is exposed to the outside on both sides (both front and rear sides) in the direction orthogonal to the connector insertion / removal direction, and the first leg 66 and the second leg 66 of the male terminal piece 60 are exposed on both sides. Allows the leg 68 to enter.

The left side wall piece 20 and the right side wall piece 22 of the housing portion 12 are located on the left and right sides of the spring piece 16 with a gap in the left and right directions, and form a pair of side walls that shield the left and right sides of the spring piece 16. .. More specifically, the left side wall piece 20 and the right side wall piece 22 have tips corresponding to the entire tip piece 28 including the first female side contact portion 30 and the second female side contact portion 32 of the spring piece 16. Includes extended portions 20A, 22B extending on both sides of the piece 28.

The left side wall piece 20 and the right side wall piece 22 limit the deformation of the spring piece 16 in the left-right direction without hindering the elastic deformation of the spring piece 16 pivoting the joint with the base end portion 14, and the spring piece 16 Is protected from disturbance in which an external force acts on the spring piece 16 due to contact with other parts or the like.

As a result, the durability of the spring piece 16 is improved, and the contact state between the first female side contact portion 30 and the second female side contact portion 32 and the first male side contact portion 70 and the second male side contact portion 72 is improved. The change due to the deformation of the spring piece 16 is suppressed.

In particular, since the left side wall piece 20 and the right side wall piece 22 include the expansion portions 20A and 22B, it is surely suppressed that an external force acts on the tip piece portion 28 of the spring piece 16 due to contact with other parts or the like. At the same time, the possibility that an oil film or the like adheres to the first female side contact portion 30 and the second female side contact portion 32 is reduced.

The right side wall piece 22 includes a hook-shaped (rollover L-shaped) bent piece portion 34 extending from the tip edge. The bent piece portion 34 has a front piece portion 34A facing the gap in front of the base end portion 14.

The front piece portion 34A protects the base end portion 14 from disturbance caused by an external force acting on the base end portion 14 due to contact with other parts or the like without hindering the movement of the base end portion 14. As a result, the durability of the spring piece 16 is improved, and the contact state between the first female side contact portion 30 and the second female side contact portion 32 and the first male side contact portion 70 and the second male side contact portion 72 is improved. The change due to the deformation of the spring piece 16 is suppressed.

The housing portion 12 has a front wall piece portion 36 bent from the front end (lower end) of the right side wall piece 22 in the connector insertion direction toward the left wall piece 20. The front wall piece portion 36 extends in a direction orthogonal to the connector insertion / removal direction at a predetermined distance on the front side with respect to the connector insertion direction of the tip piece portion 28, and when the connector is inserted, the first male side contact portion 70 and the second The dimensions are defined in the anteroposterior direction to be accepted between the male contact portions 72. That is, the dimension C in the front-rear direction of the front wall piece portion 36 is smaller than the dimension B in the direction orthogonal to the connector insertion direction between the first male side contact portion 70 and the second male side contact portion 72 (FIG. 6B). reference).

The front wall piece portion 36 is a tip piece portion of the spring piece 16 without hindering the insertion of the female side terminal piece 10 into the male terminal piece 60 and the elastic deformation of the spring piece 16 pivoting the joint portion with the base end portion 14. The 28 is protected from disturbance in which an external force acts on the base end portion 14 due to contact with other parts or the like.

As a result, the durability of the spring piece 16 is improved, and the contact state between the first female side contact portion 30 and the second female side contact portion 32 and the first male side contact portion 70 and the second male side contact portion 72 is improved. The change due to the deformation of the spring piece 16 is suppressed.

A protrusion 36A is formed at the tip of the front wall piece 36. The protrusion 36A is complementaryly engaged with the recess 20B formed at the tip of the left wall piece 20. As a result, the displacement movement of the front wall piece portion 36 with respect to the left side wall piece 20 in the front-rear direction is suppressed.

The housing portion 12 is cut up inward in the vicinity of the lower ends of the left side wall piece 20 and the right side wall piece 22, and the cut-up pieces 38 and 39 surrounded by the tip piece 28 at predetermined intervals are formed. Including. The cut-up pieces 38 and 39 extend on both front and rear sides and the front side of the tip piece 28 at predetermined intervals, and the deformation of the spring piece 16 pivoting the joint with the base end 14 and the length of the spring piece 16 Limit deformation in the direction (arm length direction).

As a result, the spring piece 16 is suppressed from being excessively deformed, the durability of the spring piece 16 is improved, and the first female side contact portion 30, the second female side contact portion 32, and the first male side contact portion 70 are suppressed. And the contact state with the second male side contact portion 72 is suppressed from being changed by the deformation of the spring piece 16.

Next, the connection process of the pair of terminals will be described with reference to FIGS. 6A to 6C.

As shown in FIG. 6A, the female terminal piece 10 is roughly aligned in the front-rear direction with respect to the male terminal piece 60, and the female terminal piece 10 is lowered. As a result of this descent, as shown in FIG. (B), the first female side contact portion 30 comes into contact with the inclined surface 66A of the first leg portion 66 of the male side terminal piece 60, whereby the female side terminal is further brought into contact with the female side terminal. By lowering the piece 10, as shown in FIG. 6C, the first female side contact portion 30 is guided by the inclined surface 66A to reach a position where it contacts the first male side contact portion 70. At the same time, the second female side contact portion 32 comes into contact with the second male side contact portion 72.

In this state, the dimension A of the protruding end in the direction orthogonal to the connector insertion direction between the first female side contact portion 30 and the second female side contact portion 32 is the first male side contact portion 70 and the second male side contact portion 72. By being larger than the dimension B in the direction orthogonal to the connector insertion direction with, the tip piece portion 28 is elastically deformed to reduce the outer dimension in the front-rear direction, and the first leg portion 66 and the second leg portion 66 which are cantilever beams. The legs 68 are elastically deformed so as to be separated from each other in the front-rear direction.

Due to the elastic deformation of the tip piece 28, which has a higher rigidity than the arm piece 26, and the repulsive force generated by the elastic deformation of the first leg 66 and the second leg 68, the necessary first female contact portions 30 and the second The contact pressure between the female side contact portion 32, the first male side contact portion 70, and the second male side contact portion 72 is secured. As a result, the conductive connection between the female terminal piece 10 and the male terminal piece 60 is performed with high reliability.

Since the arm piece 26 is an arm made of a relatively long cantilever, and further, the crank shape is formed by the base end 14, the orthogonal portion 26A, and the inclined portion 26B, so that the base end portion 14 side. The elastic deformation of the spring piece 16 having the pivot axis (hinge axis), that is, the elastic deformation of the spring piece 16 in which the tip piece portion 28 is displaced in the front-rear direction is formed with the base end portion 14 extending in the left-right direction and the orthogonal portion 26A. It is performed by a relatively small force with an elastic piece shape having both the folding curve of No. 1 and the folding curve of the orthogonal portion 26A and the inclined portion 26B extending in the left-right direction as the hinge axes.

Due to the displacement of the tip piece portion 28 in the front-rear direction, the misalignment of the female terminal piece 10 with respect to the male terminal piece 60 in the front-rear direction is absorbed, and high flexibility is obtained for this misalignment. As a result, poor contact between the pair of male contact portions 30 and 32 and the pair of female contact portions 70 and 72 is less likely to occur.

As described above, since the first female side contact portion 30 and the second female side contact portion 32 are provided on the tip piece portion 28 different from the arm piece portion 26, usually for absorbing the contradictory misalignment. The flexibility of the arm piece 26 and the securing of contact pressure are compatible.

The present invention has been described above with respect to preferred embodiments thereof, but as can be easily understood by those skilled in the art, the present invention is not limited to such embodiments and deviates from the gist of the present invention. It can be changed as appropriate as long as it does not.

In the present embodiment, for convenience of explanation, the power supply side to which the lead wire is connected is referred to as a female terminal piece 10, and the substrate side is referred to as a male terminal piece 60. The terminal piece may be referred to as a male terminal piece, and the male terminal piece may be referred to as a female terminal piece. The arrangement and number of the female terminal piece 10 and the male terminal piece 60 are not limited to those of the above-described embodiment.

In addition, not all of the components shown in the above embodiments are indispensable, and they can be appropriately selected as long as they do not deviate from the gist of the present invention.

10: Female terminal piece for connector 12: Housing part 14: Base end part 16: Spring piece 18: Board part 20: Left wall piece 20A: Expansion part 20B: Recessed part 22: Right side wall piece 22B: Expansion part 24: Covered barrel Piece 25: Core wire barrel piece (lead wire connection)
26: Arm piece 26A: Orthogonal part 26B: Inclined part 28: Tip piece 28A: Curved part 28B: Orthogonal part 28C: Free end piece 30: First female side contact part 32: Second female side contact part 34: Folded piece 34A: Front piece 36: Front wall piece 36A: Protrusion 38: Cut-up piece 39: Cut-up piece 40: Female side connector 42: Female side connector housing 50: Insulation coating cable 52: Insulation coating part 60: Male side terminal piece for connector 62: Conductive connection part 64: Base part 66: First leg part 66A: Inclined surface 68: Second leg part 70: First male side contact part 72: Second male side contact part 80: Male connector 82: Male connector housing

Claims (8)

A female terminal piece for a connector connected to a male terminal piece for a connector having a pair of male contact parts facing each other in a direction orthogonal to the connector insertion / removal direction.
It has a housing portion including a lead wire connecting portion to which a lead wire is connected, and a strip-shaped spring piece including a base end connected to the housing portion to form a cantilever.
The spring piece includes an arm piece extending from the base end in the connector insertion direction.
A pair of female contact portions that should be in contact with the male side contact portion, which are bent in a hook shape on the free end side of the arm piece and face in a direction orthogonal to the connector insertion / removal direction. Female side terminal piece for a connector having a tip piece portion forming a. The female terminal piece for a connector according to claim 1, wherein the arm piece portion includes an inclined portion extending so as to be inclined with respect to the connector insertion / removal direction. The female terminal piece for a connector according to claim 2, wherein the arm piece portion includes an orthogonal portion extending orthogonally to the connector insertion / removal direction on the base end side of the inclined portion. The female terminal piece for a connector according to any one of claims 1 to 3, wherein the housing portion includes a pair of side walls located on both sides of the spring piece. The female terminal piece for a connector according to claim 4, wherein the pair of side walls includes a portion extending on both sides of the tip piece portion so as to correspond to the entire tip piece portion. The housing portion extends in a direction orthogonal to the connector insertion / removal direction at a predetermined distance on the front side of the tip piece portion in the connector insertion direction, and is received between the two male side contact portions when the connector is inserted. The female terminal piece for a connector according to any one of claims 1 to 5, which has a front wall to be made. The female terminal piece for a connector according to any one of claims 1 to 6, wherein the housing portion includes a cut-up piece surrounded by the tip piece portion at a predetermined interval. It is a pair of terminal pieces of the male side terminal piece for the connector and the female side terminal piece for the connector that can be inserted and removed from each other.
The male terminal piece for a connector has a base extending in a direction orthogonal to the connector insertion / removal direction and a pair of legs extending from the base in the connector insertion / removal direction at intervals in a direction orthogonal to the base. The pair of legs comprises a pair of male contact portions facing each other.
The female terminal piece for a connector is a pair of terminal pieces that is the female terminal piece for a connector according to any one of claims 1 to 7.

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