JP6431357B2 - Terminal chain - Google Patents

Description

  The present invention relates to a terminal chain band in which a plurality of terminal fittings are chained by pressing a metal band plate.

  In general, in the manufacture of terminal fittings used for connectors, etc., a long metal plate (hereinafter referred to as a strip) is punched out by pressing to form a flat piece of terminal fitting in the strip. By bending the terminal metal piece, a terminal chain band in which a plurality of three-dimensional terminal metal pieces are arranged in parallel is obtained. For example, the terminal chain is wound around a reel and carried to a processing site, and the terminal fitting is separated from the band plate.

  By the way, the terminal fitting is provided with a terminal portion such as a protrusion. For example, a female terminal fitting is provided with a lance obtained by cutting and raising a top plate of a rectangular tubular terminal box into which a mating terminal is inserted. Therefore, when the terminal chain band formed with such terminal fittings is wound around the outer surface of the cylindrical reel, the terminal chain bands that overlap in the radial direction may interfere with each other to deform the lance. On the other hand, a method is known in which a buffer interlayer paper is sandwiched between terminal chain bands that overlap in the radial direction to avoid contact between the terminal chain bands (see, for example, Patent Document 1).

  The terminal chain band of Patent Literature 1 has a protective piece formed by cutting and raising a part of the band plate and bending it in the length direction of the terminal fitting. By setting the height of the bent surface from the band plate surface of the protective piece higher than the height of the terminal part such as the lance of the terminal fitting, the protective piece is brought into contact with the upper interlayer paper when the reel is wound. The gap between the interlayer papers of each layer is secured to prevent external force from being applied to the terminal portion.

JP 2009-140698 A

  However, the terminal chain of Patent Document 1 is provided with a protective piece only on one side in the width direction. Therefore, when the terminal chain is wound around the reel, the other terminal chain without the protective piece is pressed against the interlayer paper in the width direction of the terminal chain (in the direction perpendicular to the longitudinal direction), and the terminal fitting There is a possibility that the terminal part of the terminal is deformed.

  The subject of this invention is made from such a viewpoint, and exists in preventing a terminal metal fitting deform | transforming, when winding a terminal chain strip around a reel.

In order to solve the above-described problems, the present invention provides a plurality of terminal fittings formed on a metal strip by press working, a connecting member that connects adjacent terminal fittings, and is extended and bent from a side edge of the connecting member. in the terminal chain belt and a coercive Mamoruhen formed Te, a plurality of terminal fittings are formed in parallel and arranged in the longitudinal direction of the strip, the female or are connected with the corresponding terminal of the connector at one end A male first terminal portion is formed by bending one band plate surface side of the band plate, a second terminal portion externally connected to the other end is formed, and the connecting member is a first terminal portion of the terminal fitting. When provided by connecting an intermediate portion between the second terminal portion, the protective pieces, et folded distracted from the second side edge of the terminal portion side of the connecting member is, extending in the longitudinal direction of the terminal fitting A first terminal portion on the opposite side of the connecting member with respect to the protective piece An auxiliary protective piece having a bent surface extending from the side edge of the terminal fitting and extending in the length direction of the terminal fitting is provided, and the respective bent surfaces of the protective piece and the auxiliary protective piece are separated from the band plate surface. The height is set to be the same height as the height from the band plate surface of the first terminal portion .

When the terminal chain band configured in this manner is wound around a reel with interlayer paper sandwiched therebetween, the folded surface of the protective piece comes into contact with the interlayer paper, and the folded surface of the auxiliary protective piece comes into contact with the interlayer paper. Thereby, the interlayer paper extends from the connecting member provided by connecting the intermediate portion between the first terminal portion and the second terminal portion of the terminal fitting to the first terminal portion side and the second terminal portion side, the bent surface of the protection piece formed bent and extending in the longitudinal direction of the terminal fitting and the auxiliary protection plates, Ru is supported lifting in a wide range of length direction of the terminal fitting. As a result, the inclination in the length direction of the terminal fitting can be suppressed, and a gap between the interlayer paper and the first terminal portion of the terminal fitting is secured. Therefore, it can prevent that the 1st terminal part formed by bend | folding to the one band board surface side of the band board of a terminal metal fitting is pressed and deform | transformed by interlayer paper. The protective piece and auxiliary protective piece, depending on the terminal portion of the terminal fitting, whereas one of the front and back sides of the strip, or may be provided on both.

In this case, the first terminal portion can be, for example, a female cylindrical terminal box into which the mating terminal is inserted. According to this, for example, it is possible to prevent the interlayer paper from pressing the lance that is a part of the terminal box and is cut and raised upward from the upper surface of the terminal box, so that deformation of the lance can be prevented.

The second terminal portion is formed with a crank portion formed by bending in a crank shape in the height direction away from the strip surface opposite the first terminal portion, the terminal fitting with respect to the protection piece The other protective piece which is extended and bent from the side edge of the adjacent connecting member across the intermediate portion to the crank portion side can be formed . According to this, since the interlayer paper can be prevented from being pressed against the crank portion, the deformation of the crank portion can be prevented.

  According to the present invention, it is possible to prevent the terminal fitting from being deformed when the terminal chain is wound around the reel.

It is a perspective view which shows the external appearance of the terminal chain band to which this invention is applied. It is a schematic diagram explaining the process of winding the terminal chain band to which this invention is applied around a reel. It is an external appearance perspective view of the terminal metal fitting isolate | separated from the terminal chain band to which this invention is applied. It is a side view of the terminal chain band of FIG. It is a fragmentary sectional view of the AA arrow direction of the reel of FIG. It is a fragmentary sectional view of the AA arrow direction of the reel by which the conventional terminal chain band was wound. It is a fragmentary sectional view of the reel which shows the state where the conventional terminal chain band inclined.

  Hereinafter, a terminal chain according to an embodiment to which the present invention is applied will be described with reference to the drawings. The terminal chain of the present embodiment is obtained in the process of manufacturing a female terminal fitting held in the connector. For example, it is applied to the terminal chain when manufacturing a male terminal fitting. You can also. FIG. 1 is a perspective view of a terminal chain band according to the present embodiment, FIG. 2 is a schematic diagram illustrating a process of winding the terminal chain band around a reel, and FIG. 3 is an external perspective view of a terminal fitting.

  In the manufacture of the terminal fitting 11, as shown in FIG. 1, a flat strip-shaped strip 13, which is a long metal base material, is punched out by pressing, and a flat unfolded terminal fitting piece is formed from the side edge of the carrier 15. 17 is extended, and then the unfolded terminal fitting piece 17 is bent to form the terminal fitting 11 to obtain the band-like terminal chain 19. In FIG. 1, a part of the terminal chain 19 in the longitudinal direction is shown.

  In the following description, the X direction in FIG. 1 is the width direction of the strip 13, the Y direction is the longitudinal direction of the strip 13, and the Z direction is the height direction. The lower side of the lower surface of the strip 13 is defined as the lower side. In the present embodiment, the height means both a vertical distance from the upper surface of the band plate 13 to a predetermined position above and a vertical distance from the lower surface of the band plate 13 to a predetermined position below. .

  As shown in FIG. 2, the terminal chain 19 is wound around a reel 21 that rotates in the direction of the arrow, is bundled in a roll shape, and is conveyed to the assembly site. At the assembly site, the terminal fitting 11 is separated from the terminal chain 19 drawn from the reel 21 and assembled to a connector or the like.

  Next, the structure of the terminal fitting 11 formed with the terminal chain 19 will be described with reference to FIGS. 1 and 3. The terminal fitting 11 is formed to extend in the width direction of the strip 13 from one side edge of the carrier 15 and is arranged substantially parallel to the adjacent terminal fitting 11. The terminal fitting 11 is formed having a rectangular tube shaped terminal box 23 into which a mating terminal is inserted and an external connection portion 25 extending from the terminal box 23 in the longitudinal direction of the terminal fitting 11.

  The terminal box 23 is formed by raising and folding both sides of the terminal metal piece 17 extending from the carrier 15 so as to be flush with each other, thereby forming a space into which the mating terminal is inserted. The terminal box 23 is provided with a lance 29 formed by cutting and raising the top wall 27. The lance 29 forms a locking portion for accommodating and holding the terminal fitting 11 in a housing (not shown). Note that a tongue piece is formed on the inner side of the terminal box 23 to fold the top wall 27 and press the mating terminal.

  The external connection portion 25 is formed in a long plate shape having a rectangular cross section, and extends in the longitudinal direction of the terminal fitting 11 from the bottom wall 30 of the terminal box 23, and the direction in which the intermediate portion 31 is separated from the belt plate 13. And a crank portion 33 extending in the longitudinal direction of the terminal fitting 11. The tip of the crank portion 33 has a constricted shape, and is connected to a conductor (not shown), for example.

  Next, the structure of the terminal chain 19 of this embodiment will be described. As shown in FIG. 1, the terminal chain 19 of the present embodiment includes a plurality of terminal fittings 11, two connecting members 35 a and 35 b that connect adjacent terminal fittings 11, and one of the side edges of the connecting member 35. The first protective piece 37 raised upward from the side, the second protective piece 39 lowered downward from one of the side edges of the connecting member 35, and the other side edge of the connecting member 35 raised upward from the other. The auxiliary protection piece 41 is provided.

  The plurality of terminal fittings 11 are connected to each other via two connecting members 35a and 35b that intersect the intermediate portion 31 at substantially right angles. Each of the connecting members 35 a and 35 b is disposed substantially parallel to the strip plate 13 at a substantially central portion in the width direction, and extends in the longitudinal direction of the strip plate 13.

  The first protective piece 37, the second protective piece 39, and the auxiliary protective piece 41 are arranged between the adjacent terminal fittings 11 when the terminal chain 19 is viewed from above, and the first protective piece 37 and the auxiliary protective piece 41 are The first protective piece 37 and the second protective piece 39 are arranged at the same position in the longitudinal direction of the band plate 13 with an interval in the longitudinal direction of the band plate 13.

  The first protective piece 37 is formed by extending a tip protruding in the horizontal direction from one side edge of the connecting member 35 a upward at a predetermined angle and bending it in the length direction of the terminal fitting 11. The auxiliary protection piece 41 is formed by extending a tip protruding in the horizontal direction from the other side edge of the connecting member 35 a upward at a predetermined angle and bending it in the length direction of the terminal fitting 11. In other words, the first protective piece 37 and the auxiliary protective piece 41 are raised while being inclined in a direction away from each other in the length direction of the terminal fitting 11 and then bent in a direction away from each other.

  The second protective piece 39 is formed by extending a tip protruding in the horizontal direction from one side edge of the connecting member 35 a downward at a predetermined angle and bending it in the length direction of the terminal fitting 11. The second protective piece 39 extends in the width direction of the strip 13 to substantially the same position as the tip of the crank portion 33 of the terminal fitting 11.

  FIG. 4 is a side view of the terminal chain 19 of FIG. 1 and shows the height of each terminal portion constituting the terminal fitting 11 of the terminal chain 19 and the height of the protective pieces 37, 39, 41. . In the terminal fitting 11, the upper maximum height is the cut-and-raised height h <b> 1 of the lance 29, and the lower maximum height is the height h <b> 2 of the bottom surface of the crank portion 33. On the other hand, the height of the upper surface (bending surface) of the bent portion 43 of the first protective piece 37 and the height of the upper surface (bending surface) of the bent portion 45 of the auxiliary protective piece 41 are set to the same height h3. This height h3 is set to be larger than the maximum height h1 above the terminal fitting 11. On the other hand, the height h4 of the lower surface (bending surface) of the bent portion 47 of the second protective piece 39 is set to be larger than the maximum height h2 below the terminal fitting 11.

  As shown in FIG. 4, the bent portion 45 of the auxiliary protective piece 41 is positioned in the length direction of the terminal fitting 11, that is, in the width direction of the band plate 13 with respect to the bent portion 43 of the first protective piece 37. Is provided. In the present embodiment, the bent portion 43 and the bent portion 45 are completely separated from each other.

  Next, the operation of the terminal chain 19 when the terminal chain 19 configured as described above is wound around the reel 21 will be described. FIG. 5 is a cross-sectional view of a part of the cross section of the reel 21 around which the terminal chain 19 is wound, as viewed from the direction of arrows AA in FIG. In the upper figure, the state where the terminal chain 19 overlaps upward is shown.

  When the terminal chain 19 is wound around the reel 21, a long strip of interlayer paper 49 is applied to the inner peripheral side of the terminal chain 19, and the interlayer paper 49 and the terminal chain 19 are wound around the reel 21 together. Thus, by interposing and winding the interlayer paper 49 between the layers of the terminal chain 19, metal contact between the terminal chain 19 adjacent in the radial direction is avoided.

  Here, in order to make the effect of the present embodiment easy to understand, a problem when the conventional terminal chain is wound around the reel 21 will be described with reference to FIG. FIG. 6 is a cross-sectional view showing a state where the terminal chain 51 wound around the reel 21 is disposed between the interlayer papers 49a and 49b, and corresponds to the lower diagram of FIG. This terminal chain 51 is different from the terminal chain 19 of this embodiment in that it does not have the second protective piece 39 and the auxiliary protective piece 41.

  In the conventional terminal chain 51, the bent portion 43 of the first protective piece 37 contacts the inner peripheral surface of the interlayer paper 49a, and the crank portion 33 contacts the outer peripheral surface of the interlayer paper 49b. However, in FIG. 6, a gap is provided between the interlayer papers 49a and 49b for easy understanding of the drawing. The terminal box 23 is supported in a state where it floats in the space between the interlayer papers 49 when the first protective piece 37 and the crank portion 33 are in contact with the interlayer papers 49, respectively. However, since the portion of the terminal chain 51 that contacts the interlayer paper 49 is biased to one side in the width direction of the band plate 13, for example, when the terminal chain 51 is wound around the reel 21, It is conceivable that the interlayer paper 49a comes into contact with the terminal chain band 51 inclined in the width direction of the terminal 11 and the lance 29 of the terminal fitting 11 is pressed and deformed by the interlayer paper 49a.

  In this respect, the terminal chain 19 of the present embodiment, as shown in FIG. 5, takes into account the lance 29 of the terminal fitting 11 positioned above the band plate 13, in addition to the first protective piece 37, auxiliary protection. A piece 41 is provided, and the bent portion 45 of the auxiliary protective piece 41 is provided with a position shifted in the length direction of the terminal fitting 11 with respect to the bent portion 43 of the first protective piece 37. The height h3 of the bent surface is set to be larger than the cut and raised height h1 of the lance 29 of the terminal fitting 11. Therefore, since the terminal chain 19 can support the upper interlayer paper 49a in a wider range in the length direction of the terminal metal 11, it is ensured that the terminal metal 11 is pressed and deformed by the interlayer paper 49a. Can be prevented.

  In this case, the height h3 of the bent surfaces of the first protective piece 37 and the auxiliary protective piece 41 can be set to the same size as h1. For example, if a predetermined amount of the total area of these bent surfaces is secured, the external force that presses the lance 29 can be reduced. Therefore, even if h3 is set in this way, deformation of the lance 29 can be prevented.

  In addition, the terminal chain 19 includes a second protective piece 39 having a height higher than that of the crank portion 33 in consideration of the crank portion 33 of the terminal fitting 11 located below the belt plate 13. Thereby, since the 2nd protection piece 39 contacts the interlayer paper 49b instead of the crank part 33, a deformation | transformation of the crank part 33 can be prevented. However, since only the second protective piece 39 is in contact with the interlayer paper 49b, an auxiliary protective piece having the same height h4 as the second protective piece 39 is provided below the strip 13 in addition to the second protective piece 39. 41 is preferably provided. Also in this case, the bent portion 45 of the auxiliary protective piece 41 is provided so as to be shifted from the bent portion 47 of the second protective piece 39 in the length direction of the terminal fitting 11, that is, in the width direction of the band plate 13. . Thereby, since the inclination of the terminal chain 19 can be prevented, as a result, the deformation of the lance 29 and the crank portion 33 can be surely prevented. Note that the height h4 of the auxiliary protection piece 41 and the second protection piece 39 can be set to the same size as the height h2 of the crank portion 33 in the same manner as above the band plate 13.

  For example, when the terminal portion constituting the terminal fitting 11 is located only below the strip plate 13, the auxiliary protection piece 41 can be provided only below the strip plate 13 together with the second protective piece 39.

  As mentioned above, although embodiment of this invention was explained in full detail with drawing, said embodiment is only the illustration of this invention, It can change and change within the range described in the claim. is there.

  For example, the auxiliary protective piece 41 of the present embodiment is extended from the connecting member 35a from which the first protective piece 37 extends, and the first protective piece 37 and the strip 13 are aligned in the longitudinal direction. However, the present invention is not limited to this. If the bent portion 45 of the auxiliary protective piece 41 is provided at a position shifted from the position of the bent portion 43 of the first protective piece 37 at least in the length direction of the terminal fitting 11, the connection You may extend from any position of member 35a, 35b. Therefore, for example, the auxiliary protection piece 41 can be inclined and extended in the same direction as the first protection piece 37 from the side edge of the connecting member 35b, or the longitudinal positions of the second protection piece 39 and the belt plate 13 can be set. It can also be made to extend from the opposite side edge of the connection member 35a.

  In addition, the first protective piece 37, the second protective piece 39, and the auxiliary protective piece 41 of the present embodiment are all provided so as to extend in the length direction of the terminal fitting 11, but these extending directions are respectively It can be set freely and can be extended in a direction intersecting with the length direction of the terminal fitting 11 (for example, a direction orthogonal). The bent portions 43 and 45 may have portions that overlap each other in the length direction of the terminal fitting 11, but a longer distance from each other in the same direction prevents deformation of the terminal fitting 11. preferable.

  In addition, the auxiliary protection piece 41 of the present embodiment has a one-to-one correspondence with the first protection piece 37 or the second protection piece 39, but a plurality of auxiliary protection pieces 41 are provided for the first protection piece 37 or the second protection piece 39. Can also be provided. Thereby, since the terminal chain 19 can support the interlayer paper 49 in a wider range in the length direction of the terminal fitting 11, it is more reliable that the terminal fitting 11 is pressed and deformed by the interlayer paper 49a. Can be prevented.

  In the present embodiment, an example in which the terminal box 23 is formed in a rectangular tube shape has been described. However, the terminal box is not limited to a rectangular tube shape, and may be formed in a cylindrical shape, for example. Further, in the present embodiment, the lance 29 that is a part of the terminal box 23 is set to the maximum height above the strip 13 as the terminal portion of the terminal fitting 11, but the lance 29 is merely an example, for example, In this embodiment, when the lance 29 is not cut and raised from the terminal box 23, the upper surface of the top plate of the terminal box 23 is the maximum height. The same applies to the case where the maximum height below the band plate 13 is set. If the terminal portion that rises highest below is the terminal portion other than the crank portion 33, that portion is the maximum height.

DESCRIPTION OF SYMBOLS 11 Terminal metal fitting 13 Band plate 19 Terminal chain band 23 Terminal box 25 External connection part 29 Lance 33 Crank part 35a, 35b Connecting member 37 1st protection piece 39 2nd protection piece 41 Auxiliary protection piece 43, 45, 47 Bending part (bending) surface)
49 Interlayer paper

Claims (3)

A plurality of terminal fittings which are formed by pressing the strip of metal, and a connecting member for connecting the terminal fittings adjacent, and the coercive Mamoruhen said formed from a side edge of the connecting member bent distracted In the terminal chain with
The plurality of terminal fittings are arranged in parallel in the longitudinal direction of the band plate and each has a female or male first terminal portion connected to the mating terminal of the connector at one end of one of the band plates. A second terminal portion formed by bending on the band plate surface side and externally connected to the other end is formed,
The connecting member is provided by connecting an intermediate portion between the first terminal portion and the second terminal portion of the terminal fitting,
The protective piece is pre Symbol connecting member and the second is from the side edge of the terminal portion side distracted by bending et al is of having a bent surface extending in a longitudinal direction of the terminal fitting,
An auxiliary protective piece having a bent surface extending from the side edge of the first terminal portion on the opposite side of the connecting member to the protective piece and being bent and extending in the length direction of the terminal fitting is provided. ,
Each of the bent surfaces of the protective piece and the auxiliary protective piece is set to have the same height as the height from the belt plate surface of the first terminal portion is higher than the height from the belt plate surface of the first terminal portion. A terminal chain that features 2. The terminal chain according to claim 1, wherein the first terminal portion is a female cylindrical terminal box into which a mating terminal is inserted. The second terminal portion is formed having a crank portion formed by bending in a crank shape at a height in a direction away from the band plate surface on the opposite side of the first terminal portion ,
Another protective piece formed by extending from the side edge of the connecting member adjacent to the protective piece across the intermediate portion of the terminal fitting to the crank portion side is formed. The terminal chain band according to claim 1 or 2 .

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