JP2008204726A - Method of manufacturing connection terminal, and connection terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a connection terminal in which, while suppressing heat generation to the utmost, the connection terminal capable of being mounted at a narrow pitch by miniaturization can be manufactured easily and at high yield, and to provide the connection terminal. <P>SOLUTION: The method of manufacturing the connection terminal 1 having a connection 3 to which a male tab terminal can be connected, and a conductor part 2 coupled to this connection 3 includes a molding step of molding a connection-linking band-like body 31 integrated by aligning a plurality of connections 3, a coupling step of coupling the conductor part 2 to a predetermined connection 3 with respect to the connection-linking band-like body 31 and a separation step of, by cutting the connection-linking band-like body 31 at predetermined positions, separating it into a plurality of connection terminals 1 formed by coupling the conductor part 2 to one or the plurality of connections 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method of manufacturing a connection terminal used, for example, in an electrical component of an automobile, and in particular, to connect a male terminal (that is, a flat male tab terminal) of a mini fuse or a blade type fuse. The present invention relates to a method for manufacturing a connection terminal and a connection terminal.

  In general, a plurality of connection terminals for connecting male tab terminals of mini-fuses or blade-type fuses incorporated in an electric connection box or the like are formed from a single metal plate at a time by stamping (for example, Patent Document 1). reference).

  And this connection terminal has a connection part formed in the shape where a pair of terminal parts extend from a terminal board part, and inserts a male tab terminal in the slit formed between terminal parts, and a male tab terminal Is sandwiched between the terminal portions.

  A plurality of connection terminals having such a structure are arranged in a state of being mounted on a printed circuit board in a case constituting an electrical connection box, and a mini-fuse or a blade-type fuse is connected to each connection terminal with a male tab terminal. Are connected by inserting them between the terminal portions of the connection terminals (see, for example, Patent Document 2).

  For this type of connection terminal, a terminal portion made by a technique for improving recyclability by fixing a terminal portion made of a different material to a plate-like conductive portion (for example, see Patent Document 3) or by bending. There is known a technique for reducing the size by cutting and removing a bent portion when the erection is erected (see, for example, Patent Document 4).

JP 2002-186142 A JP 2002-152943 A JP 2004-104946 A JP 2005-63757 A

  By the way, since the connection terminal is to sandwich the male tab terminal by the terminal portion formed by punching, it is preferable to form the connection terminal from a material having excellent mechanical properties. The conductivity was low.

  For this reason, when the connection terminal is formed from a material having excellent mechanical properties, a good connection strength with the male tab terminal can be obtained. However, since the conductivity is low, heat is generated due to an increase in input current. End up.

  In this case, if the cross-sectional area of the connection terminal is increased, heat generation can be suppressed, but the connection terminal is increased in size and mounting at a narrow pitch due to the downsizing of the electrical connection box becomes difficult.

  Further, as shown in FIGS. 9 and 10, the connection terminal 61 mounted on the printed circuit board is formed by pressing the connection portion 62 and the conductor portion 63 extending from the connection portion 62 and connected to the printed circuit board by soldering. Although integrally molded, considering the mechanical characteristics and air insulation, the width dimension Wa of the connecting portion 62 needs to be wider than the width dimension Wb of the conductor portion 63 as shown in FIG. As shown in FIG. 3, the yield when punching from the metal plate was not good. The length Lb of the conductor part 63 is often longer than the length La of the connection part 62.

  Further, considering that the connection terminals 61 are chained, the plurality of connection portions 62 are chained in the same sequence as that actually used in the product as shown in FIGS. 9 and 10 from one metal plate. However, in this case, since the punching load increases, a large facility for punching is required.

  In addition, when performing processing including the connection terminals 61 chained by the above-described method, because the punching shape varies depending on the lot due to mixing with the single connection terminal 61, a dedicated die is required each time. Equipment costs increase. In this case, as shown in FIG. 12, it is only necessary to perform punching processing for each connection terminal 61 having the same shape, but in this case, when mounting after punching, various connection terminals 61 are arranged in a predetermined arrangement. It had to be rearranged and it took time and effort.

  The present invention has been made in view of the above circumstances, and a method of manufacturing a connection terminal that can easily and with high yield a connection terminal that can be mounted at a narrow pitch by miniaturization while suppressing heat generation as much as possible. The purpose is to provide a connection terminal.

In order to achieve the above-described object, a method for manufacturing a connection terminal according to the present invention is characterized by the following (1) to (4).
(1) A method of manufacturing a connection terminal having a connection part to which a counterpart terminal can be connected and a conductor part connected to the connection part,
A molding step of molding a connection chain chain in which a plurality of connections are aligned and integrated,
A connecting step of connecting a conductor portion to a predetermined connecting portion with respect to the connecting portion chain,
A separation step of separating the plurality of connection terminals in which the conductor portion is connected to one or a plurality of connection portions by cutting the connection portion chain strip at a predetermined position;
Including.
(2) In the method of (1), the connecting step includes extending a part between the connection parts of the connection part chain-like body and cutting an intermediate part so that locking pieces are provided on both sides of the connection part. Forming and caulking these locking pieces around the back side of the conductor.
(3) In the method of (1), the connecting step forms locking pieces on both sides of the connecting portion by cutting a part of the intermediate portion between the connecting portions of the connecting portion chain-like body. Thereafter, the locking piece is stretched, and then the locking piece is wound around the back side of the conductor portion and caulked.
(4) In the method according to any one of (1) to (3), the connecting step includes fitting a convex portion formed in the conductor portion into a hole portion formed in the connection portion of the connection portion chain strip. Then, the diameter of the convex portion is expanded and engaged.
(5) In any one of the above methods (1) to (4), the connecting portion chain band is formed of a copper alloy, and the conductor portion is formed of copper.

According to the manufacturing method of the connection terminal of the above (1), a forming step of forming a connection part chain band in which a plurality of connection parts are aligned and integrated, and a predetermined connection part for the connection part chain band A connecting step of connecting the conductor portions to each other, and a separating step of separating the connection portion chain strips into a plurality of connection terminals in which the conductor portions are connected to one or a plurality of connection portions by cutting at a predetermined position. It is possible to manufacture a connection terminal having a connection part to which a counterpart terminal can be connected and a conductor part connected to the connection part very easily.
In addition, since the connecting portion and the conductor portion are connected and integrated, a single connecting terminal having a single connecting portion and a plurality of connecting portions are compared with the case where the connecting portion and the conductor portion are integrally formed. The double row connection terminals can be easily manufactured with a high yield. Moreover, even if a single connection terminal and a double-row connection terminal are mixed, it can be formed with a common mold and all steps can be performed with one mold. Can be reduced in size, and the equipment cost can be greatly reduced.
In addition, the connecting portion chain band can be formed from a material having excellent mechanical characteristics, and the conductor portion can be formed from a material having excellent conductivity, whereby a mini fuse or blade incorporated in an electric connection box or the like. It is possible to manufacture a small and high-density connection terminal capable of connecting a counterpart terminal such as a mold fuse with high strength and suppressing heat generation due to an input current.
According to the manufacturing method of the connection terminal of the above (2), a part between the connection parts of the connection part chain is extended, the intermediate part is cut, and the locking pieces are formed on both sides of the connection part. By winding the piece around the back side of the conductor portion and caulking, the connection portion and the conductor portion can be firmly fixed, and good heat conduction and electrical conductivity between the connection portion and the conductor portion are ensured. be able to. In addition, even when the connecting portion chain is formed so that the arrangement interval of the connecting portions becomes a sandwich pitch, it is possible to secure a locking piece having a length sufficient to caulk the conductor portion.
According to the manufacturing method of the connection terminal of (3) above, after cutting a part of the intermediate part between the connection parts of the connecting part chain strip to form the locking pieces on both sides of the connecting part, the locking piece Then, the connecting piece and the conductor part can be firmly fixed by winding the locking piece around the back side of the conductor part and caulking, and a good connection between the connecting part and the conductor part can be obtained. Heat conduction and conductivity can be ensured. Further, in the method of manufacturing the connection terminal of (3) above, after cutting a part of the intermediate part between the connection parts of the connection part chain band, the thickness of the locking piece is reduced by stretching. This is preferable because cutting scraps are not generated by cutting immediately before the stopper piece is wound around the back side of the conductor and caulked. In addition, even when the connecting portion chain is formed so that the arrangement interval of the connecting portions becomes a sandwich pitch, it is possible to secure a locking piece having a length sufficient to caulk the conductor portion.
According to the manufacturing method of the connection terminal of the above (4), a hole is formed in the connection part of the connection part chain strip, a convex part is formed in the conductor part, and the convex part is fitted into the hole part to form the convex part. The connection portion and the conductor portion can be firmly fixed and the connection portion can be arranged at a predetermined position with respect to the conductor portion. When arranged in a junction box or the like, it can be positioned and arranged with high accuracy. In addition, it is possible to ensure good heat conduction and electrical conductivity between the connection portion and the conductor portion.
According to the manufacturing method of the connection terminal of the above (5), the connection portion chain band is formed of a copper alloy, and the conductor portion is formed of copper, thereby realizing miniaturization while ensuring sufficient connection strength. The heat generated by the input current can be suppressed as much as possible, and the heat of the connecting portion can be radiated by the conductor portion.

In order to achieve the above-described object, the connection terminal according to the present invention is characterized by the following (6) to (8).
(6) having one or a plurality of connecting portions to which the counterpart terminal can be connected, and a conductor portion connected to one end of the connecting portion;
The connection portion includes a terminal plate portion that is electrically connected to the conductor portion, and a terminal portion that is formed so as to extend from the main body of the terminal plate portion, and is connected to the counterpart terminal,
The locking pieces formed on both sides of the main body of the terminal plate part are wound and crimped on the back side of the conductor part,
The plate thickness of the locking piece is formed thinner than the plate thickness of the main body of the terminal plate portion.
(7) In the configuration of (6), the connection portion is made of a copper alloy, and the conductor portion is made of copper.
(8) In any one of the constitutions (6) and (7), a convex portion formed in the conductor portion is fitted into a hole portion formed in a main body of the terminal plate portion of the connection portion. The convex part is expanded and engaged.

According to the connection terminal of the above (6), one or a plurality of connection portions to which the counterpart terminal can be connected, and a conductor piece connected to one end of the connection portion, the locking piece formed in the connection portion Since it is wound around the back side of the conductor part and crimped, the connection part and the conductor part can be firmly fixed, and good heat conduction and conductivity between these connection part and the conductor part are ensured. can do. In addition, after forming the connection portion chain band in which the plurality of connection portions are aligned and integrated so that the interval between the plurality of connection portions becomes a sandwich pitch, the connection portion chain band is connected to the adjacent connection portion. Even in the case of using a manufacturing method in which one or a plurality of connection portions are formed by cutting between the locking pieces, a locking piece having a length sufficient to caulk the conductor portion can be secured.
According to the connection terminal having the configuration of (7) above, since the connection portion is made of a copper alloy and the conductor portion is made of copper, it is possible to achieve downsizing while ensuring sufficient connection strength. The heat generated by the input current can be suppressed as much as possible, and the heat of the connecting portion can be radiated by the conductor portion.
According to the connection terminal having the configuration of (8) above, the convex portion formed in the conductor portion is fitted into the hole portion formed in the connection portion, and the convex portion is expanded and engaged. The connection part and the conductor part can be firmly fixed and the connection part can be arranged at a predetermined position with respect to the conductor part. For example, when the connection terminal is arranged in an electrical connection box or the like, the accuracy It can be positioned and arranged well. In addition, it is possible to ensure good heat conduction and electrical conductivity between the connection portion and the conductor portion.

  According to the present invention, it is possible to obtain a connection terminal that can be manufactured easily and with a high yield, which can be mounted at a narrow pitch by miniaturization while suppressing heat generation as much as possible.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

  Hereinafter, a method for manufacturing a connection terminal and a connection terminal according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view schematically showing a connection terminal according to the embodiment.

  As shown in FIG. 1, the connection terminal 1 includes a conductor portion 2 and a connection portion 3 connected to the conductor portion 2.

  The conductor part 2 is a conductive metal material made of copper, such as C1100 (ie, tough pitch copper), C1020 (ie, oxygen-free copper), etc., which has excellent conductivity, low DC resistance, and high heat dissipation. Is formed. The conductor portion 2 is bent at its intermediate portion, and one end side on the connection portion 3 side is connected to the connection portion 3 as a connection portion 11. Further, the other end side of the conductor portion 2 is a leg portion 13 having a pin portion 12 whose width is narrowed from the middle, and the pin portion 12 of the leg portion 13 is formed on a printed circuit board. It can be inserted into the hall. That is, the pin portion 12 of the leg portion 13 is mounted on the printed circuit board by being inserted into the through hole of the printed circuit board and soldered.

  The connection portion 3 is formed of a conductive metal material made of a copper alloy having excellent mechanical characteristics, such as a trade name “NB105” (manufactured by Dowa Mining Co., Ltd.), and is wider than the conductor portion 2. Is formed. The connection portion 3 is formed in a shape in which a pair of terminal portions 22 extend from the terminal plate portion 21 with a space therebetween, and is incorporated into an electrical connection box or the like in a slit 23 formed between the terminal portions 22. The male tab terminal is sandwiched between the terminal portions 22 by inserting a flat male tab terminal (that is, a mating terminal) such as a mini fuse or a blade-type fuse.

  Each terminal portion 22 has a tapered shape in which opposing edge portions are separated from each other toward the tip, and a contact portion 24 having a circular arc shape in plan view protruding in the facing direction is provided in the vicinity of the tip portion. Is formed. The distance between the contact portions 24 is slightly narrower than the thickness of the male tab terminal inserted into the slit 23.

  When the printed circuit board on which the connection terminal 1 having the above configuration is mounted is disposed in an electrical connection box or the like and a male tab terminal such as a mini fuse or a blade-type fuse is connected to the connection terminal 1 and incorporated, The tab terminal is inserted perpendicularly between the terminal portions 22 of the connection portion 3 of the connection terminal 1. If it does in this way, the terminal part 22 will be expanded outside by the male tab terminal slightly thicker than the space | interval of the contact part 24, and the contact part 24 will contact the surface of a male tab terminal, and a conduction | electrical_connection state will be ensured. At this time, since the connecting portion 3 is formed of a material having excellent mechanical characteristics, deformation of the terminal portions 22 in the separating direction is suppressed, and therefore, the contact portion 24 of the terminal portion 22 of the connecting portion 3. Is kept pressed against the surface of the male tab terminal, and a good conduction state by contact with the male tab terminal is obtained.

  Further, even if the connection portion 3 generates heat due to the input current, the heat is transmitted from the connection portion 3 to the conductor portion 2 and is radiated well.

  Thus, according to said connection terminal 1, it is comprised from the connection part 3 to which a male tab terminal is connected, and the conductor part 2 connected with the connection part 3, The material excellent in the mechanical characteristic as the connection part 3 Because the material with excellent conductivity is used as the conductor part 2, the male tab terminals such as mini fuses and blade-type fuses incorporated in the electrical connection box etc. are connected with high strength, and the connection by the input current The heat generated in the portion 3 can be transmitted to the conductor portion 2 to be dissipated, whereby the connection terminal 1 can be reduced in size and high-density mounting can be realized.

  In particular, by forming the connection portion 3 with a copper alloy having excellent mechanical properties, it is possible to achieve downsizing while ensuring sufficient connection strength, and the conductor portion 2 is made of copper with excellent conductivity. By forming, heat generation due to the input current can be suppressed as much as possible, and heat of the connection portion 3 can be radiated by the conductor portion 2.

  Next, the manufacturing method of said connection terminal 1 is demonstrated.

  2 and 3 are plan views showing the manufacturing process of the connection terminal 1. FIG.

  First, as shown in FIG. 2, the terminal plate portion 21 is integrally connected by continuously pressing a strip-shaped metal plate made of a copper alloy having excellent mechanical properties and having a uniform thickness. A connection part chain strip 31 in which a plurality of connection parts 3 having the same shape are chained is sequentially formed and sent out. In addition, a carrier portion 32 used for conveyance by a press machine or the like is formed at the tip of the terminal portion 22. The carrier part 32 may not be provided.

  Then, the tip of the hoop material 33 made of copper having excellent conductivity, low direct current resistance and high heat dissipation is pressed by a NC or the like from the direction orthogonal to the connecting portion chain strip 31 by pressing or the like. The conductor part 2 having 12 is processed and supplied. The conductor portion 2 is supplied at a predetermined timing in accordance with the feeding of the connecting portion chain strip 31 by the NC feeder.

  The connecting portion 11 of the conductor portion 2 supplied at a predetermined timing is connected to the terminal plate portion 21 of the connecting portion 3, and then a predetermined portion of the terminal plate portion 21 is cut as shown in FIG. A single connection terminal 1 having a connection portion 3 and a double row connection terminal 1 having a plurality of connection portions 3 are used, and each connection terminal 1 is separated from the carrier portion 32.

  If it does in this way, the single or double row connection terminal 1 by which the conductor part 2 was integrally connected with the connection part 3 will be obtained easily. Thereafter, the leg portion 13 is formed by bending the conductor portion 2.

  In the manufacturing process of the connection terminal 1, the processing of the conductor portion 2, the connection between the connection portion 3 and the conductor portion 2, and the cutting of the terminal plate portion 21 are processed in the same mold.

  Here, how to connect the connecting portion 3 and the conductor portion 2 in the manufacturing process will be described.

  4A and 4B are diagrams showing a connection structure between a connection portion and a conductor portion, in which FIG. 4A is a perspective view of a connection portion between the connection portion and the conductor portion connected to each other, and FIG. FIGS. 5A, 5B, and 5C are perspective views showing a connecting step between a connecting portion and a conductor portion, respectively.

  As shown in FIGS. 4A and 4B, the terminal plate portion 21 of the connection portion 3 has two circular hole portions 41 at predetermined positions, and the connection portion 11 of the conductor portion 2 has Two convex portions 42 having a circular cross section are formed at predetermined positions on the surface. And the convex part 42 of the conductor part 2 is fitted by the hole part 41 of the connection part 3, and also the convex part 42 is diameter-expanded by crushing the center position of the convex part 42 after fitting, and a hole part. 41, the terminal plate portion 21 of the connecting portion 3 and the connecting portion 11 of the conductor portion 2 are connected. Thereby, the connection part 3 and the conductor part 2 are not only firmly fixed by the engagement of the convex part 42 with the hole part 41, but are also securely connected electrically.

  Further, locking pieces 43 extending sideways are formed on both sides of the terminal plate portion 21 of the connecting portion 3, and these locking pieces 43 are wound around the connecting portion 11 of the conductor portion 2. It is bent toward the conductor part 2 by caulking, and is further folded toward the back side of the conductor part 2. Thereby, the connection part 3 and the conductor part 2 are not only firmly fixed by caulking of the locking piece 43 at the connecting part 11 of the conductor part 2, but also more reliably electrically connected. .

  When connecting the connection part 3 and the conductor part 2 as described above, as shown in FIG. 5A, when forming the connection part chain strip 31, the hole 41 is formed, On both side portions of the terminal plate portion 21, recessed portions 45 for forming the locking pieces 43 are formed. Here, when the dent 45 is formed, the metal plate is stretched by the dent 45 so that the plate thickness on the both sides is thinner than the main body of the terminal plate 21, and the back side of the conductor portion 2. The locking piece 43 can be sufficiently folded back. In the connection part 3, the locking piece 43 is formed thin in this way, and the plate thickness of the part excluding it is uniform.

  Next, as shown in FIG. 5 (b), a convex portion 42 formed in advance on the conductor portion 2 is fitted into the hole 41 of the connection portion 3, and further, the center position of the convex portion 42 is crushed, thereby The diameter of the part 42 is expanded and engaged with the hole 41.

  Further, as shown in FIG. 5C, the bottom portion, which is an intermediate portion of the hollow portion 45, is cut into the locking pieces 43, and these locking pieces 43 are wound around the connecting portion 11 of the conductor portion 2 and caulked. As a result, it is bent toward the conductor portion 2 and further folded toward the back surface side of the conductor portion 2.

  Then, the connecting portion 3 and the conductor portion 2 are extremely firmly fixed to each other by the engagement of the convex portion 42 in the hole portion 41 and caulking of the locking piece 43 at the connecting portion 11 of the conductor portion 2 by the connecting step. In addition, it is securely connected electrically.

  In addition, the order of the connection process of the connection part 3 and the conductor part 2 is not restricted to said order.

  As described above, according to the above-described embodiment, the forming step of forming the connection portion chain strip 31 in which the plurality of connection portions 2 are aligned and integrated, and the connection portion chain strip body 31 is predetermined. A connecting step for connecting the conductor part 2 to the connecting part 3 and a plurality of connections in which the conductor part 2 is connected to one or a plurality of connecting parts 3 by cutting the connecting part chain strip 31 at a predetermined position. By the separation step of separating the terminal 1, the connection terminal 1 having the connection part 3 to which the male tab terminal can be connected and the conductor part 2 connected to the connection part 3 can be manufactured.

  Moreover, since the connection part 3 and the conductor part 2 are divided | segmented and it connects after that, compared with the case where the connection part 3 and the conductor part 2 are formed integrally, the single connection terminal 1 which has the one connection part 3 is provided. And the double row connection terminal 1 having the plurality of connection portions 3 can be easily manufactured with a high yield. Moreover, even if the single connection terminal 1 and the double-row connection terminal 1 are mixed, they can be formed with a common mold and all steps can be performed with one mold, It is also possible to reduce the size of the mold and greatly reduce the equipment cost.

  Further, by forming the connecting portion chain 31 from a material having excellent mechanical properties and forming the conductor portion 2 from a material having excellent conductivity, a mini-fuse or blade-type fuse incorporated in an electric connection box or the like. It is possible to manufacture a small and high-density connection terminal 1 that can connect a male tab terminal such as a high strength and suppress heat generation due to an input current.

  In particular, by forming the connecting part chain strip 31 from a copper alloy and the conductor part 2 from copper, it is possible to achieve downsizing while ensuring sufficient connection strength, and to generate heat by an input current as much as possible. In addition, the heat of the connection part 3 can be radiated by the conductor part 2.

  In addition, by forming a recess 45 between the connecting portions 3 of the connecting portion chain 31 and extending and cutting the intermediate portion, locking pieces 43 are formed on both sides of the connecting portion 3, and the locking pieces 43 are The connection part 3 and the conductor part 2 can be firmly fixed by being wound around the back side of the conductor part 2 and good heat conduction and conductivity between the connection part 3 and the conductor part 2 can be obtained. Can be secured. Moreover, even when the connection part chain strip 31 is formed so that the arrangement interval of the plurality of connection parts 3 becomes a narrow pitch, it is possible to ensure the locking pieces 43 having a length sufficient for caulking the conductor part 2.

  Furthermore, the hole 41 is formed in the connection part 3 of the connection part chain strip 31, and the convex part 42 is formed in the conductor part 2, and the convex part 42 is fitted into the hole 41 to expand the diameter of the convex part 42. By engaging with each other, the connection portion 3 and the conductor portion 2 can be firmly fixed, and the connection portion 3 can be disposed at a predetermined position with respect to the conductor portion 2, for example, the connection terminal 1 Can be positioned and arranged with high accuracy when the is attached to the electrical junction box or the like. In addition, it is possible to ensure good heat conduction and conductivity between the connection portion 3 and the conductor portion 2.

  In the above embodiment, the connecting portion 3 and the conductor portion 2 are connected by engaging the convex portion 42 with the hole portion 41 and caulking the locking piece 43 at the connecting portion 11 of the conductor portion 2. Only one of them can be securely connected.

  Here, a modified example of the connecting step between the connecting portion 3 and the conductor portion 2 will be described with reference to FIGS.

  When connecting the connection part 3 and the conductor part 2 as described above, the hole part 41 is formed and the both sides of the terminal plate part 21 are locked when the connection part chain strip 31 is formed. Before the recess 45 for forming the piece 43 is provided, an intermediate portion of the flat portion where the recess 45 is to be formed is first cut to form the locking piece 43. After that, by forming the recess 45, the recess 45 has a shape in which the bottom, which is an intermediate portion thereof, is cut as shown in FIG. Thus, when the hollow part 45 is formed, a metal plate is extended in this hollow part 45, and the plate | board thickness of the both sides rather than the main body of the terminal board part 21 becomes thin, and the back surface side of the conductor part 2 It can be set as the latching piece 43 of the length which can fully fold back. In the connection part 3, the locking piece 43 is formed thin in this way, and the plate thickness of the part excluding it is uniform.

  Next, as shown in FIG. 6B, the convex portion 42 formed in advance on the conductor portion 2 is fitted into the hole 41 of the connection portion 3, and further, the center position of the convex portion 42 is crushed, thereby The diameter of the part 42 is expanded and engaged with the hole 41.

  Further, as shown in FIG. 6 (c), the locking piece 43 is wound around the connecting portion 11 of the conductor portion 2 and caulked to bend toward the conductor portion 2, and further folded back to the back surface side of the conductor portion 2. .

  Then, the connecting portion 3 and the conductor portion 2 are extremely firmly fixed to each other by the engagement of the convex portion 42 in the hole portion 41 and caulking of the locking piece 43 at the connecting portion 11 of the conductor portion 2 by the connecting step. In addition, it is securely connected electrically.

  In addition, the order of the connection process of the connection part 3 and the conductor part 2 is not restricted to said order.

  Thus, according to the modified example of the connecting step, a part of the intermediate portion between the connecting portions 3 of the connecting portion chain 31 is cut to form the locking pieces 43 on both sides of the connecting portion 3, and thereafter Furthermore, after extending the locking piece 43 by forming the recess 45, the connecting piece 3 and the conductor 2 are firmly fixed by winding the locking piece 43 around the back side of the conductor 2 and caulking. Therefore, good heat conduction and electrical conductivity between the connection part 3 and the conductor part 2 can be ensured. Moreover, in the example of a change of the said connection process, after cut | disconnecting some intermediate parts between the connection parts 3 of the connection part chain strip 31, the thickness of the locking piece 43 is reduced by formation of the hollow part 45. It is preferable because the metal plate is not scraped immediately before the engaging pieces 43 are wound around the back side of the conductor portion 2 and caulked. Further, even when the connecting portion chain 31 is formed so that the arrangement interval of the plurality of connecting portions 3 becomes a sandwich pitch, the locking piece 43 having a length sufficient to caulk the conductor portion 2 can be secured. preferable.

  Here, what is shown in FIG. 7 is obtained by connecting the connecting portion 3 and the conductor portion 2 by engagement of the convex portion 42 with the hole portion 41.

  Specifically, as shown in FIGS. 7A and 7B, two circular hole portions 41 are formed at predetermined positions of the terminal plate portion 21 of the connecting portion 3, and the connecting portion 11 of the conductor portion 2. Two convex portions 42 having a circular cross section are formed at predetermined positions on the surface of the connector, and the convex portions 42 of the conductor portion 2 are fitted into the hole portions 41 of the connection portion 3. By crushing, the protrusion 42 is engaged with the hole 41 to connect the terminal plate portion 21 of the connecting portion 3 and the connecting portion 11 of the conductor portion 2.

  Further, what is shown in FIG. 8 is one in which the connecting portion 3 and the conductor portion 2 are connected by caulking of the locking piece 43 at the connecting portion 11 of the conductor portion 2.

  Specifically, as shown in FIGS. 8A and 8B, locking pieces 43 extending laterally are formed on both sides of the terminal plate portion 21 of the connection portion 3, and these locking pieces 43 are formed. Is wound around the connecting portion 11 of the conductor portion 2 and bent to the conductor portion 2 side, and further folded back to the back surface side of the conductor portion 2 to connect the terminal plate portion 21 of the connecting portion 3 and the conductor portion 2. 11 is connected.

  In this way, in the connection by the caulking of the locking piece 43, as shown in FIG. 8C, a recess 46 is formed at a predetermined position of the conductor portion 2, and the locking piece 43 is inserted into the recess 46. By winding and caulking, the conductor portion 2 and the connection portion 3 can be connected in a state where they are positioned at predetermined positions.

  In addition, this invention is not limited to each embodiment mentioned above, A deformation | transformation, improvement, a combination, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  For example, the connection terminal 3 described above was configured to engage with the hole 41 by crushing the protrusion 42 of the conductor 2 after being inserted into the hole 41 formed at a predetermined position of the connection 3. It is not limited to this. Specifically, a hole similar to the hole 41 is formed in the conductor portion 2 instead of the convex portion 42, and the rivet is passed through the hole 41 of the conductor 2 and the hole 41 of the connection portion 3, and then the rivet The conductor part 2 and the connection part 3 may be connected by crushing from both sides. Or the form which connects the conductor part 2 and the connection part 3 by welding, without providing the convex part 42 in the conductor part 2 and not providing the hole part 41 also in the connection part 3 may be sufficient.

It is a perspective view which shows typically the connection terminal which concerns on embodiment. It is a top view which shows the manufacturing process of a connection terminal. It is a top view which shows the manufacturing process of a connection terminal. It is a figure which shows the connection structure of a connection part and a conductor part, Comprising: (a) is a perspective view in the connection part of the connection part and conductor part mutually connected, (b) is a sectional view of a part of connection place FIG. (A)-(c) is each a perspective view which shows the connection process of a connection part and a conductor part. (A)-(c) is each a perspective view which shows the example of a change of the connection process of a connection part and a conductor part. It is a figure which shows the other connection structure of a connection part and a conductor part, Comprising: (a) is a perspective view, (b) is the perspective view seen by the cross section in the center. It is a figure which shows the other connection structure of a connection part and a conductor part, (a) is the perspective view seen from the upper surface side, (b) is the perspective view seen from the back surface side, (c) is a conductor part It is a side view in a connection part. It is a perspective view of the conventional connection terminal. FIG. 10 is a plan view (development view) of the connection terminal of FIG. 9 at the time of punching from a metal plate. FIG. 10 is a plan view of the connection terminal of FIG. 9 for explaining dimensions. It is a top view for demonstrating the problem in manufacture of the conventional connection terminal.

Explanation of symbols

1: Connection terminal 2: Conductor portion 3: Connection portion 31: Connection portion chain band 41: Hole portion 42: Convex portion 43: Locking piece

Claims (8)

A method of manufacturing a connection terminal having a connection part to which a counterpart terminal can be connected and a conductor part connected to the connection part,
A molding step of molding a connection chain chain in which a plurality of connections are aligned and integrated,
A connecting step of connecting a conductor portion to a predetermined connecting portion with respect to the connecting portion chain,
A separation step of separating the plurality of connection terminals in which the conductor portion is connected to one or a plurality of connection portions by cutting the connection portion chain strip at a predetermined position;
The manufacturing method of the connection terminal characterized by including.   The connecting step includes forming a locking piece on both sides of the connecting portion by extending a part between the connecting portions of the connecting portion chain and cutting the intermediate portion, and connecting the locking pieces to the conductor portion. The method of manufacturing a connection terminal according to claim 1, wherein:   In the connecting step, after forming a locking piece on both sides of the connection part by cutting a part of the intermediate part between the connection parts of the connection chain chain, the locking piece is stretched, The method of manufacturing a connection terminal according to claim 1, wherein the engaging piece is wound around the back side of the conductor portion and caulked.   The connecting step is characterized in that a convex portion formed on the conductor portion is fitted into a hole portion formed in the connecting portion of the connecting portion chain, and the convex portion is expanded in diameter and engaged. The manufacturing method of the connection terminal as described in any one of Claims 1-3.   The method of manufacturing a connection terminal according to any one of claims 1 to 4, wherein the connection part chain strip is formed of a copper alloy, and the conductor part is formed of copper. One or a plurality of connecting portions to which the counterpart terminal can be connected, and a conductor portion connected to one end of the connecting portion,
The connection portion includes a terminal plate portion that is electrically connected to the conductor portion, and a terminal portion that is formed so as to extend from the main body of the terminal plate portion, and is connected to the counterpart terminal,
The locking pieces formed on both sides of the main body of the terminal plate part are wound and crimped on the back side of the conductor part,
The connection terminal according to claim 1, wherein a thickness of the locking piece is smaller than a thickness of a main body of the terminal plate portion.   The connection terminal according to claim 6, wherein the connection portion is made of a copper alloy, and the conductor portion is made of copper.   The convex part formed in the said conductor part is fitted by the hole formed in the main body of the terminal plate part of the said connection part, This convex part is expanded and engaged, It is characterized by the above-mentioned. Item 8. The connection terminal according to Item 6 or Item 7.

Images