JP6360745B2 - Chain terminal - Google Patents

Description

  The present invention relates to a chain terminal in which terminals are connected in a chain.

  There is a chained terminal that realizes mass connection by connecting terminals in a chained manner to a single terminal. In a conventional chain terminal, for example, a conductive flat plate is formed by punching a strip-shaped carrier part and a plurality of developed terminal forming parts arranged in parallel at a predetermined pitch in the extending direction of the carrier part to form a terminal. A contact portion is formed by bending the portion into a used state, and then provided to the user in a coiled state around the hub of the reel (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 9-129347

  In the chained terminal as described above, there are various types of contact portions. For example, when the electrical contact portion into which the mating connector pin is inserted is formed by a pair of leaf spring shapes, the contact portion is wound around a reel. If the leaf spring-shaped portions of the adjacent electrical contact portions in contact with each other come into contact with each other, the deformation may occur and the conductivity may be adversely affected. Therefore, in Patent Document 1, in order to avoid contact between the contact portions overlapping in the stacking direction, a terminal deformation prevention piece having a height equal to or higher than the bending height of the contact portion is provided, and a good interval is provided between the overlapping contact portions. I try to secure it.

  Further, when there is a demand to increase the contact pressure with the mating terminal as much as possible due to use conditions or the like, it is conceivable to increase the bending allowance of the leaf spring-shaped portion in order to respond without changing the material. However, the leaf spring shape portion of the contact portion in Patent Document 1 is formed so as to bend in the stacking direction wound around the reel, and if the height (deflection margin) of the leaf spring shape portion is increased, according to the increment. The terminal deformation prevention piece is also formed high. Since the thin plate-shaped terminal deformation preventing piece is easily bent due to the pressure in the stacking direction when it is raised in the stacking direction, there is a possibility that the contact portion is deformed.

  In view of the above background, it is an object of the present invention to provide a chain terminal that can prevent deformation of a chain terminal wound in a coil shape.

  In order to solve the above problems, the present invention provides a chained terminal (1) provided by being wound in a coil shape, the carrier portion (2) formed in a strip shape long in the winding direction, A plurality of terminal pieces (4) extending laterally from the carrier portion so as to be aligned in the longitudinal direction of the carrier portion, and the terminal pieces extend in the lateral direction within the same plane from the carrier portion. An extended connecting portion (11), and a base portion (13) that extends further from the connecting portion in the lateral direction and is bent around an axis (L) along the extending direction with respect to the connecting portion; It has a contact part (4a) bent and reversed from the extension direction end of the base to the connection part side.

  According to this structure, with respect to the connection part extended in the horizontal direction within the same plane from the carrier part, the base part further extended in the horizontal direction from the connection part extends along the extension direction with respect to the connection part. Since it is bent around the axis, when the chained terminal is wound around the reel hub in a coil shape, the contact portion is bent in the winding direction, so the base portion and the contact portion are in the stacking direction. Standing wall-like, the proof strength of the base and the contact part is strong against the pressure applied in the stacking direction, and the pressure in the stacking direction does not act in the deformation direction of the contact part, and prevents the base and the contact part from being deformed Can do.

  In the above invention, the base portion may be offset in the longitudinal direction of the carrier portion with respect to the connection portion. According to this configuration, since the base portion is offset with respect to the connection portion, it is possible to easily perform bending between the two.

  In the above invention, the base and the entire contact portion may be disposed on one side of the carrier portion. According to this configuration, since the base portion and the contact portion are arranged on the one surface side of the carrier portion, when the interlayer paper or the like is sandwiched between them when the chained terminal is wound around the hub of the reel, On the other hand, since the carrier part, the base part, and the contact part are arranged on one side, the sheet can be wound around the reel without damaging the interlayer paper.

  Moreover, the said connection part is good to have a crimping piece (12a * 12b) cut and raised in order to couple | bond a cable (22) by crimping. According to this configuration, since the connection portion and the base portion are bent with each other along a fold line extending in the extending direction, the connection portion comes to stand on the side with respect to the main surface of the base portion. A caulking piece for caulking the cable is provided, and the caulking piece in the caulked state is positioned laterally with respect to the main surface of the base. As a result, even if the extended end portion of the contact portion that is elastically deformed in the direction of approaching or moving away from the base portion is displaced toward the caulking piece side, it can be avoided that the extending end portion interferes with the caulking piece, Since the deformation amount of the part can be increased, the contact pressure with the mating terminal can be easily increased.

  Thus, according to the present invention, when the chained terminal is wound around the reel hub in a coil shape, the contact portion is bent in the winding direction. The base part and the contact part are strong against the pressure applied in the laminating direction, and the pressure in the laminating direction does not act in the deformation direction of the contact part and prevents deformation of the base part and the contact part. be able to.

The principal part top view which shows the expansion | deployment state after the punching process before becoming a chain terminal based on this invention 1 is a perspective view of a main part showing a chain terminal bent from the expanded state of FIG. (A) The figure which looked at the terminal piece from the contact part side, (b) is the figure of the cable connection state seen from the arrow direction of the IIIb line of (a), (c) is the arrow direction of the IIIc line of (b). Viewed from The perspective view which shows the chain-like terminal of the state wound by the reel

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a main part plan view showing a developed state after punching before becoming a chained terminal 1 according to the present invention, and FIG. 2 shows a chained terminal 1 bent from the developed state of FIG. It is a principal part perspective view shown.

  As shown in FIG. 1, for example, a band-shaped carrier portion formed in a band shape in a winding direction wound in a coil shape on a hub of a reel described later by being punched from a thin sheet metal plate of phosphor bronze. 2 and a plurality of developed shapes 3 arranged at a predetermined pitch in the longitudinal direction of the carrier portion 2 are formed in a single plate shape. A terminal piece 4 shown in FIG. 2 is formed by bending a predetermined portion of the developed shape body 3 (portion shown by a two-dot chain line in FIG. 1).

  The developed shape body 3 is formed so as to extend in the lateral direction (direction perpendicular to the longitudinal direction of the carrier portion 2) from one of both side edges extending in the longitudinal direction of the carrier portion 2. Note that the developed shape body 3 is coupled to the carrier portion 2 via a connection portion 11 extending in the lateral direction within the same plane from the carrier portion 2 via a narrow width portion. The connecting portion 11 is provided with crimped pieces 12a and 12b formed in an unfolded state before being cut and raised. On the side opposite to the carrier part 2 of the connection part 11, the carrier part 2 is offset in the longitudinal direction and further extends in the lateral direction from the connection part 11, and extends in the lateral direction with respect to the connection part 11 (lateral direction). ) Along the axis L (circumferential direction of the axis L) and the contact portion expanding portion 14 are integrally formed in this order.

  The developed shape body 3 formed in this way is bent in a predetermined direction at a portion indicated by a two-dot chain line in FIG. 1, thereby forming a terminal piece 4 shown in FIG. 2. In addition, each two-dot chain line shows the approximate position of folding, and it is not always necessary to bend the two-dot chain line. For example, a case where a portion including a two-dot chain line or an adjacent two-dot chain line is bent in an arc shape is included. In the description of the present embodiment, the case of bending in an arc shape is used as a bend, but it is not particularly limited to an arc shape.

  The connection portion 11 includes a portion formed in a rectangular long plate shape that is the same surface as the carrier portion 2, a pair of the above caulking pieces 12 a extending to both sides on the long plate-like carrier portion 2 side, and a base portion 13. And a pair of the above caulking pieces 12b protruding on both sides on the side. The caulking piece 12a on the carrier portion 2 side grips the cover of the cable 22 described later by caulking, and the caulking piece 12b on the base portion 13 side grips the core wire of the cable 22 by caulking.

  As described above, the base portion 13 is formed so as to be offset in the longitudinal direction of the carrier portion 2 from the connecting portion 11 and to extend in a strip shape in a lateral direction orthogonal to the longitudinal direction of the carrier portion 2. ing. The base 13 includes a pair of first engagement edges 13a widened to the left and right orthogonal to the longitudinal direction that is the extending direction of the base 13, and the length of the base 13 relative to the first engagement edges 13a. A pair of second engaging edge portions 13b that are widened in the left and right directions are formed on the side opposite to the carrier portion 2 side at a predetermined interval.

  In the illustrated example, the widths of the portions where the first and second engaging edge portions 13a and 13b are provided are the same constant width, but may be different widths. Further, the body portion 13c between the first engagement edge portion 13a and the second engagement edge portion 13b in the base portion 13 is formed to have a constant width that is narrower than the width of the engagement edge portions 13a and 13b. Yes.

  The contact portion expanding portion 14 extends in the extending direction of the base portion 13 from one end in the longitudinal direction of the base portion 13. The contact portion expanding portion 14 is narrowed from the base portion 13 side to a reversing portion 14a narrowed on both sides than the width of the first engagement edge portion 13a, and to both sides of the reversing portion 14a in a gentle arc shape. A reverse warped portion 14b, a contact portion 14c having substantially the same width as the reversing portion 14a, a folded portion 14d whose width is narrowed in the extending direction, and a tapered extending end portion 14e. These are formed successively in this order.

  The developed shape body 3 formed in this manner is appropriately bent along the axis L and the two-dot chain lines described above to form the terminal strip 4 composed of the base portion 13 and the contact portion 4a as shown in FIG.

  Here, the formation point of the contact part 4a formed by bending the contact part expansion | deployment part 14 is demonstrated. A reversing portion 14a is bent in a semicircular shape from the boundary portion with the second engagement edge portion 13b, which is one end in the longitudinal direction of the base portion 13, in a direction to be reversed to the connection portion 11 side. The reverse warped portion 14b is extended toward the connecting portion 11 in a state of facing the portion in the base 13 where the first engagement edge 13a is provided, and then bent in a direction away from the base 13. , Extending obliquely rearward (second engagement edge 13b side). The contact portion 14c that continues to the reverse warp portion 14b is located farthest away from the base portion 13, and is substantially semicircular so as to make a U-turn toward the base portion 13 side in the extending direction of the reverse warp portion 14b. It is composed. The folded portion 14d continuous with the contact portion 14c extends in a direction approaching the base portion 13 from the contact portion 14c, but is partially parallel to the contact portion 14c side portion of the reverse warped portion 14b, and then obliquely rearward ( The base portion 13 is extended to a portion provided with the first engagement edge portion 13a. The extended end portion 14e continuing to the folded portion 14d is bent in a direction that is reversed at a position close to the base portion 13. Thus, the contact part 4a in the terminal piece 4 is formed.

  The base portion 13 is bent around the axis L that is the circumferential direction of the axis L described above with respect to the connecting portion 11. In the present embodiment, the base portion 13 is bent at a right angle with respect to the connection portion 11, that is, the main surface (front and back surfaces) of the carrier portion 2 so that the main surfaces of the connection portion 11 and the base portion 13 are orthogonal to each other. Note that the connecting portion 11 and the base portion 13 do not need to be bent at a right angle along the axis L, and may be gently bent so as to have, for example, an arcuate curved surface.

  The terminal piece 4 formed by bending the developed shape body 3 in this way is formed as shown in FIG. 3 (a) is a view of the terminal piece 4 as viewed from the contact portion 4a side, and FIG. 3 (b) is a view of the cable connection state as seen from the direction of the arrow of the IIIb line in FIG. 3 (a). FIG.3 (c) is the figure seen from the arrow direction of the IIIc line | wire of FIG.3 (b).

  A plurality of terminal pieces 4 are arranged at a predetermined pitch in the longitudinal direction of the carrier part 2, and are connected to the carrier part 2 via connection parts 11 to form a chain terminal 1. As shown in FIG. 4, the chain terminal 1 is provided to the user by being wound around the hub 21 a of the reel 21 in a coil shape. Thus, in the state wound on the reel 21, pressure is applied to the terminal pieces 4 in the stacking direction (the direction indicated by the arrow F in FIG. 3A). This stacking direction is the direction of the axis (axis Cc in FIG. 3A) orthogonal to the main surface of the carrier portion 2.

  In the conventional example, a strip-shaped plate punched out from a thin metal plate such as phosphor bronze is bent to the front and back sides to form a contact portion, and the chained terminal thus formed is reeled. In the case where the contact portion is wound, a portion that becomes the stacking direction is generated in the deformation direction due to the bending of the contact portion, and thus the contact portion may be newly deformed by the pressure in the stacking direction (F). When the contact portion is deformed, there is a possibility that an appropriate contact pressure as designed cannot be obtained in contact with the mating terminal.

  On the other hand, when the base portion 13 and the contact portion 4a according to the present invention are formed as the terminal pieces 4 of the chain terminal 1, they are formed as walls that stand in the stacking direction (the radial direction of the reel 21). The pressure (arrow F in FIG. 3A) applied in the stacking direction in a state where the chain terminal 1 is wound around the hub 21a of the reel 21 is applied in the direction in which the base terminal 13 and the contact portion 4a stand up. . Since the wall has a large proof strength against the pressure applied in the standing direction, the base 13 and the contact portion 4a are not easily deformed against the pressure applied in the stacking direction.

  As shown in FIG. 3A, the maximum width of the base portion 13 (the width at each of the engagement edge portions 13a and 13b) is the maximum width of the contact portion 4a (see FIG. 3) with respect to the stacking direction (axis Cc direction). In the example shown, the width of the contact portion 14 c is larger), and the entire contact portion 4 a is within the maximum width of the base portion 13. Thereby, the base 13 has a function as a prevention piece for preventing the deformation of the contact portion 4a, and it is not particularly necessary to form a dedicated terminal deformation prevention piece as in the conventional example.

  3B, the caulking piece 12a is caulked to the covering portion of the cable 22, and the other caulking piece 12b is caulked to the core wire of the cable 22, whereby the cable 22 is attached to the terminal piece 4. As shown in FIG. Combined. As an example of the usage state of the terminal piece 4, as shown in FIG. 3B, the contact portion 14 c of the contact portion 4 a comes into contact with the contacted portion 23 a of the mating terminal 23. In order to increase the contact pressure between the contact portion 14c and the contacted portion 23a, the amount of deformation in the contact direction of the contact portion 4a (the direction of arrow A in the figure) may be increased.

  When the material and thickness of the terminal piece 4 are not changed, it is conceivable to increase the distance from the base portion 13 to the contact portion 14c in order to increase the amount of deformation in the contact direction of the contact portion 4a. In the case where the contact direction of the contact portion is the stacking direction with respect to the reel 21 as in the conventional chain terminal, when the amount of deformation in the contact direction of the contact portion is increased, the layer spacing is increased and the same. The winding amount with respect to the reel of the diameter is reduced.

  On the other hand, in the case of the chain terminal 1 according to the present invention, the contact direction of the contact portion 4a is not the stacking direction but the winding direction (circumferential direction of the reels 21), so that the stacking interval does not increase. . In addition, although the pitch space | interval of each terminal piece 4 which is a winding direction expands, it is constant with the width | variety of the base 13 with respect to radial direction, and the width | variety of the base 13 is a contact part like this embodiment. 4a is small with respect to the protruding amount (the length from the base portion 13 to the contact portion 14c), so that the number of windings (number of laps) around the reel 21 can be increased, thereby suppressing a decrease in the winding amount with respect to the reel having the same diameter. Can do.

  In addition, the contact portion 14 c comes close to the base portion 13 by contacting the mating terminal 23 and deforming the contact portion 4 a during use. As a result, the extended end portion 14e contacts the base portion 13, and then is displaced in a direction approaching the caulking piece 12b as indicated by an arrow B in FIGS. 3 (b) and 3 (c).

  On the other hand, when the caulking piece 12b that is closer to the extended end portion 14e is caulked with respect to the core wire of the cable 22, as shown in FIG. Quantity) is low. The height direction of the caulking piece 12b from the connecting portion 11 is a direction that interferes with the displacement direction of the arrow B of the extending end portion 14e. However, since the height of the caulking piece 12b is reduced, the extending end portion 14e Interference with the caulking piece 12b in the displacement is avoided. This is an effect due to the connection portion 11 being positioned laterally with respect to the base portion 13, and since the deformation amount of the contact portion 4 a can be increased, it is easy to set the contact pressure with the mating terminal 23. It is possible to provide a highly versatile chain terminal 1.

  Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to such embodiments and can be easily understood by those skilled in the art. It is possible to make appropriate changes without departing from In the above embodiment, the base portion 13 is offset in the longitudinal direction of the carrier portion 2 with respect to the connecting portion 11 and has a shape extending in the lateral direction with respect to the carrier portion 2, but may not be offset. For example, the base portion 13 is extended from the connecting portion 11 without offset, and slits that are alternately located in the extending direction are provided between the connecting portion 11 and the base portion 13 from the both sides in the width direction to the center. You may make it bend | fold between both slits with respect to the connection part 11. FIG. In addition, all the components shown in the above embodiment are not necessarily essential, and can be appropriately selected without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Chain terminal 2 Carrier part 4 Terminal piece 4a Contact part 11 Connection part 12a * 12b Caulking piece 13 Base 22 Cable L Axis line

Claims (6)

A chain terminal provided by being wound in a coil shape,
A carrier portion formed in a strip shape long in the winding direction, and a plurality of terminal pieces extending laterally from the carrier portion so as to be aligned in the longitudinal direction of the carrier portion,
The terminal piece extends in the lateral direction in the same plane from the carrier portion, and further extends in the lateral direction from the connection portion and extends in the extending direction with respect to the connection portion. a bent base portion about the axis, and a contact portion which is bent from the extending direction end of the base is inverted to the connecting portion side possess,
In the contact portion, the contact direction with the mating terminal, which is a direction away from the base portion, is exposed without being covered by the other portion of the terminal piece,
In wound state to the coil, the contact direction, chained terminal, wherein Rukoto such in the winding direction of the chained terminal. 2. The chain terminal according to claim 1, wherein in the state of being wound in the coil shape, the base part and the contact part form a wall shape standing in a stacking direction of the chain terminal. The chain terminal according to claim 2, wherein a maximum width of the base portion in the stacking direction is larger than a maximum width of the contact portion. The chain terminal according to any one of claims 1 to 3, wherein the base portion is offset in a longitudinal direction of the carrier portion with respect to the connection portion. The chain terminal according to any one of claims 1 to 4 , wherein the whole of the base portion and the contact portion is disposed on one surface side of the carrier portion. The chain terminal according to any one of claims 1 to 5 , wherein the connecting portion has a crimped piece cut and raised to couple the cables by caulking.

Images