JP2008176956A - Connecting terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide connecting terminals downsized while avoiding heat generation as much as possible and capable of being mounted in narrow pitches. <P>SOLUTION: The connecting terminal 1 is structured of a terminal main body 2 equipped with a pair of terminal parts 14 extended with an interval for a male tab terminal to be plugged in between the terminal parts 14, and a reinforcing member 3 fitted to the terminal main body 2 and equipped with reinforcing spring parts 22 restraining deformation of the terminal parts 14 in a direction away from each other. The terminal main body 2 is formed of a material excellent in conductivity, and the reinforcing member 3 is formed of a material excellent in mechanical characteristics. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a connection terminal used in, for example, an electrical component of an automobile, and is particularly suitable for connecting a male terminal (that is, a flat male tab terminal) of a mini fuse or a blade type fuse. Related to connection terminals.

  In general, a connection terminal for connecting a male tab terminal of a mini fuse or blade type fuse incorporated in an electric connection box or the like is formed into a shape in which a pair of terminal portions extend from a terminal plate portion by stamping by a press. The male tab terminal is sandwiched between the terminal portions by inserting the male tab terminal into a slit formed between the portions. A plurality of connection terminals having such a structure are arranged in a case constituting the electrical connection box, and a mini-fuse or a blade-type fuse is inserted into each connection terminal, and the male tab terminal is inserted between the terminals of the connection terminal. (See, for example, Patent Document 1).

And this kind of connection terminal is provided with a contact spring portion that contacts the male tab terminal inserted into the slit, and a technique for reducing electrical contact resistance is known (for example, see Patent Document 2). A technique for increasing the strength of the terminal portion by bending the side portion of the terminal portion is known (see, for example, Patent Document 3).
JP 2002-152943 A Japanese Patent Laid-Open No. 10-241769 JP 2003-45537 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.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a connection terminal that can be mounted at a narrow pitch by miniaturization while suppressing heat generation as much as possible.

In order to achieve the above-described object, the connection terminal according to the present invention is characterized by the following (1) to (6).
(1) A terminal body having a pair of terminal portions extending at intervals and having excellent conductivity in which a male tab terminal is inserted between these terminal portions;
A reinforcing member that is attached to the terminal body and has excellent mechanical properties, including a reinforcing spring part that suppresses deformation of the terminal part in the separating direction;
Having provided.
(2) In the configuration of (1), the terminal body is made of a copper alloy.
(3) In the configuration of (1) or (2), the reinforcing member is made of stainless steel.
(4) In any one of the constitutions (1) to (3), the reinforcing spring portion has a recess that holds the outer edge portion of the terminal portion over the entire length.
(5) In the configuration of any one of (1) to (3), the reinforcing spring portion includes a plate-like portion along the outer surface of the terminal portion and a recess that holds an outer edge portion in the vicinity of the tip of the terminal portion. And having.
(6) In the configuration of any one of (1) to (3), the reinforcing spring portion includes a plate-like portion along the surface of the terminal portion, and a recess that holds an outer edge portion in the vicinity of the tip of the terminal portion. Having.

According to the connection terminal having the configuration of (1) above, the reinforcing member having the reinforcing spring portion that suppresses the deformation of the terminal portion of the terminal body in the separating direction is provided, the reinforcing member has excellent mechanical characteristics, and the terminal body is electrically conductive. Due to the excellent properties, the male tab terminal can be connected with high strength and high conductivity. As a result, it is possible to reduce the size while suppressing heat generation due to the input current, and to realize high-density mounting.
According to the connection terminal having the configuration (2), since the terminal body is formed of a copper alloy having excellent conductivity, heat generation due to the input current can be suppressed as much as possible.
According to the connection terminal having the configuration (3), since the reinforcing member is formed of stainless steel having excellent mechanical characteristics, it is possible to achieve downsizing while ensuring sufficient connection strength.
According to the connection terminal having the configuration of the above (4), the terminal portion can be securely held over the entire length by the reinforcing spring portion having the concave portion that holds the outer edge portion of the terminal portion over the entire length, and the terminal portion is further separated. Deformation in the direction can be reliably suppressed.
According to the connection terminal having the configuration of the above (5), the terminal portion is extended over the entire length by the reinforcing spring portion having the plate-like portion along the outer surface of the terminal portion and the concave portion that holds the outer edge portion in the vicinity of the tip of the terminal portion. Reinforcement can be ensured, and deformation of the terminal portion in the separation direction can be reliably suppressed.
According to the connection terminal having the configuration of the above (6), when the male tab terminal is connected by the reinforcing spring part having the plate-like part along the surface of the terminal part and the concave part holding the outer edge part in the vicinity of the tip of the terminal part. Particularly, it is possible to reliably hold the tip portion of the terminal portion to which a particularly large moment acts, and to reliably suppress the deformation of the terminal portion in the separating direction.

  According to the present invention, it is possible to realize mounting at a narrow pitch by miniaturizing the connection terminal while suppressing heat generation of the connection terminal 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, connection terminals according to embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view seen from the upper surface side of the connection terminal according to the first embodiment, and FIG. 2 is a perspective view seen from the lower surface side of the connection terminal according to the first embodiment.

  As shown in FIGS. 1 and 2, the connection terminal 1 includes a terminal body 2 and a reinforcing member 3 attached to the terminal body 2.

  The terminal body 2 has excellent electrical conductivity, low DC resistance, and high heat dissipation. For example, a metal plate made of a copper alloy such as a trade name “NB105” (manufactured by Dowa Mining Co., Ltd.) is punched by a press. It is formed and has a conductor part 11 and a connection part 12 wider than the conductor part 11. The connection portion 12 is formed in a shape in which a pair of terminal portions 14 extend from the terminal plate portion 13 with a space therebetween, and is incorporated into an electrical connection box or the like in a slit 15 formed between the terminal portions 14. By inserting flat male tab terminals such as mini fuses and blade type fuses at right angles, the male tab terminals are sandwiched between the terminal portions 14.

  Each terminal portion 14 has a tapered shape in which opposing edge portions are separated from each other toward the tip, and a contact portion 16 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 16 is slightly narrower than the thickness of the male tab terminal inserted into the slit 15.

  Further, the connecting portion 12 is formed with notches 17 on both sides on the conductor portion 11 side, with which a locking piece 24 (described later) of the reinforcing member 3 is engaged.

  The reinforcing member 3 is formed by punching and bending a metal plate made of stainless steel having excellent mechanical properties, for example, SUS + numeral by a press and a bender. A pair of reinforcing spring portions 22 are formed to extend. These reinforcing spring portions 22 are formed in a U-shaped cross-sectional view having a concave portion 23, arranged on the outer side along the terminal portion 14, and the outer edge portion of the terminal portion 14 is the concave portion 23 of the reinforcing spring portion 22. Is held in place.

  Further, the reinforcing member 3 is formed with locking pieces 24 extending laterally on both sides of the base end portion 21, and these locking pieces 24 are formed in the notch 17 of the terminal body 2. The terminal body 2 is bent toward the terminal body 2 and is further folded toward the back side of the terminal body 2. The reinforcing member 3 is attached so as not to be detached from the terminal body 2 by the engagement of the locking piece 24 with the notch 17 of the terminal body 2. Since the recess 23 of the reinforcing spring portion 22 extends in the longitudinal direction of the terminal body 2 along the outer edge of the terminal portion 14, the longitudinal positioning of the reinforcing member 3 with respect to the terminal body 2 is performed by the notch portion 17. And the locking piece 24 (in other words, the positioning may be performed only by the engagement between the notch 17 and the locking piece 24).

  When the connection terminal 1 having the above-described configuration 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 male tab terminal of the fuse is connected to the connection terminal 1. Are inserted between the terminal portions 14 of the terminal body 2 at right angles. If it does in this way, the terminal part 14 will be expanded outside by the male tab terminal slightly thicker than the space | interval of the contact part 16, and the contact part 16 will contact the surface of a male tab terminal, and a conductive state will be ensured. At this time, since the terminal portion 14 is restrained from being deformed in the direction in which the terminal portions 14 are separated from each other by the reinforcing spring portion 22 of the reinforcing member 3 made of a material having excellent mechanical properties, the terminal body having excellent conductivity. The contact portion 16 of the second terminal portion 14 is maintained in a state of being pressed against the surface of the male tab terminal, and a good conduction state by contact with the male tab terminal is obtained.

  As described above, according to the connection terminal according to the first embodiment, the reinforcing member 3 including the reinforcing spring portion 22 that suppresses the deformation of the terminal portion 14 of the terminal body 2 in the separation direction is provided, and the machine is used as the reinforcing member 3. Because the terminal body 2 is made of a material with excellent electrical characteristics and a material with excellent conductivity, the male tab terminal such as a mini fuse or blade type fuse incorporated in an electrical junction box or the like has high strength and high conductivity. Can be connected. As a result, it is possible to reduce the size while suppressing heat generation due to the input current, and to realize high-density mounting.

  In particular, by forming the terminal body 2 with a copper alloy having excellent conductivity, heat generation due to input current can be suppressed as much as possible, and by forming the reinforcing member 3 with stainless steel having excellent mechanical properties, Downsizing can be realized while ensuring a good connection strength.

  Moreover, since the reinforcing spring part 22 has the recessed part 23 which hold | maintains the outer edge part of the terminal part 14 over a full length, the terminal part 14 can be reliably hold | maintained over the full length with this reinforcing spring part 22, and also a terminal part The deformation | transformation to the separation | spacing direction of 14 can be suppressed reliably.

(Second Embodiment)
FIG. 3 is a perspective view seen from the upper surface side of the connection terminal according to the second embodiment, and FIG. 4 is a perspective view seen from the lower surface side of the connection terminal according to the second embodiment.

  As shown in FIGS. 3 and 4, the connection terminal 31 includes a terminal body 32 and a reinforcing member 33 attached to the terminal body 32.

  The terminal body 32 has excellent conductivity, low DC resistance value, and high heat dissipation. For example, a metal plate made of a copper alloy such as a trade name “NB105” (manufactured by Dowa Mining Co., Ltd.) is punched by a press. It is formed and has a conductor part 41 and a connection part 42 wider than the conductor part 41. The connection portion 42 is formed in a shape in which a pair of terminal portions 44 extend from the terminal plate portion 43 with a space therebetween, and is incorporated into an electrical connection box or the like in a slit 45 formed between the terminal portions 44. By inserting flat male tab terminals such as mini fuses and blade type fuses at right angles, the male tab terminals are sandwiched between the terminal portions 44.

  Each terminal portion 44 has a tapered shape in which opposing edge portions are separated from each other toward the tip, and a contact portion 46 having a circular arc shape in a plan view projecting in the facing direction is provided in the vicinity of the tip portion. Is formed. The distance between the contact portions 46 is slightly narrower than the thickness of the male tab terminal inserted into the slit 45.

  In addition, the connection portion 42 is formed with notches 47 on both side portions on the conductor portion 41 side, with which a later-described locking piece 54 of the reinforcing member 33 is engaged.

  The reinforcing member 33 is formed by punching and bending a metal plate made of stainless steel, which is excellent in mechanical properties, for example, represented by SUS + numeral, using a press and a bender. A pair of reinforcing spring portions 52 are formed in an extending shape. These reinforcing spring parts 52 have a plate-like part 50 and a recessed part 53, the plate-like part 50 is arranged along the outer surface of the terminal part 44, and the outer edge part in the vicinity of the tip of the terminal part 44 is formed by the recessed part 53. Is retained.

  Further, the reinforcing member 33 is formed with locking pieces 54 extending laterally on both sides of the base end portion 51, and these locking pieces 54 are formed in the notches 47 of the terminal body 32. The terminal body 32 is bent toward the terminal body 32, and the terminal body 32 is further folded toward the back surface side. The reinforcing member 33 is attached so as not to be detached from the terminal body 32 due to the engagement of the locking piece 54 with the notch 47 of the terminal body 32. In addition, since the plate-like part 50 and the recessed part 53 of the reinforcing spring part 52 extend along the outer edge part of the terminal part 44 in the longitudinal direction of the terminal body 32, the reinforcing member 33 is positioned in the longitudinal direction with respect to the terminal body 32. Is achieved by the engagement of the notch 47 and the locking piece 54 (in other words, the positioning may be performed only by the engagement of the notch 47 and the locking piece 54). In addition, compared with the first embodiment, the reinforcing spring portion 52 of the reinforcing member 33 can have higher spring properties, and therefore the elastic force of the reinforcing spring portion 52 can be easily adjusted.

  When connecting a male tab terminal such as a mini fuse or a blade-type fuse incorporated in an electric connection box or the like to the connection terminal 31 having the above-described configuration, the male tab terminal is connected between the terminal portions 44 of the terminal main body 32 of the connection terminal 31. Insert it at right angles. In this way, the terminal portion 44 is spread outward by the male tab terminal that is slightly thicker than the interval between the contact portions 46, and the contact portion 46 contacts the surface of the male tab terminal to ensure a conductive state. At this time, since the terminal portion 44 is restrained from being deformed in the direction in which the terminal portions 44 are separated from each other by the reinforcing spring portion 52 of the reinforcing member 33 made of a material having excellent mechanical properties, the terminal body having excellent conductivity. The contact portions 46 of the 32 terminal portions 44 are maintained in a state where they are pressed against the surface of the male tab terminal, and a good conduction state by contact with the male tab terminal is obtained.

  As described above, according to the connection terminal according to the second embodiment, the reinforcing member 33 including the reinforcing spring portion 52 that suppresses the deformation of the terminal portion 44 of the terminal main body 32 in the separating direction is provided. Because the terminal body 32 is made of a material with excellent electrical characteristics and excellent in electrical conductivity, the male tab terminal such as a mini-fuse or blade-type fuse incorporated in an electrical junction box or the like has high strength and high electrical conductivity. Can be connected. As a result, it is possible to reduce the size while suppressing heat generation due to the input current, and to realize high-density mounting.

  In particular, by forming the terminal body 32 with a copper alloy having excellent conductivity, heat generation due to input current can be suppressed as much as possible, and by forming the reinforcing member 33 with stainless steel having excellent mechanical properties, Downsizing can be realized while ensuring a good connection strength.

  Further, since the reinforcing spring portion 52 has the plate-like portion 50 along the outer surface of the terminal portion 34 and the concave portion 53 that holds the outer edge portion in the vicinity of the tip of the terminal portion 34, the reinforcing spring portion 52 allows the terminal portion to be 44 can be reliably reinforced over the entire length, and deformation of the terminal portion 44 in the separating direction can be reliably suppressed.

(Third embodiment)
FIG. 5 is a perspective view seen from the upper surface side of the connection terminal according to the third embodiment, and FIG. 6 is a perspective view seen from the lower surface side of the connection terminal according to the third embodiment.

  As shown in FIGS. 5 and 6, the connection terminal 61 includes a terminal main body 62 and a reinforcing member 63 attached to the terminal main body 62.

  The terminal body 62 has excellent conductivity, low DC resistance, and high heat dissipation. For example, a metal plate made of a copper alloy such as a trade name “NB105” (manufactured by Dowa Mining Co., Ltd.) is punched by a press. It is formed, and has a conductor portion 71 and a connection portion 72 wider than the conductor portion 71. The connection portion 72 is formed in a shape in which a pair of terminal portions 74 extend from the terminal plate portion 73 with a space therebetween, and is incorporated into an electrical connection box or the like in a slit 75 formed between the terminal portions 74. By inserting flat male tab terminals such as mini fuses and blade type fuses at right angles, the male tab terminals are sandwiched between the terminal portions 74.

  Each terminal portion 74 has a tapered shape in which opposing edges are separated from each other toward the tip, and a contact portion 76 having a circular arc shape in a plan view protruding in the facing direction is provided in the vicinity of the tip. Is formed. The distance between the contact portions 76 is slightly narrower than the thickness of the male tab terminal inserted into the slit 75.

  Further, the connection portion 72 is formed with a stepped portion 77 that engages a locking piece 84 described later of the reinforcing member 63 at the boundary with the narrow conductor portion 71.

  The reinforcing member 63 is formed by punching and bending a metal plate made of stainless steel, which is excellent in mechanical properties, for example, represented by SUS + numeral, using a press and a bender. A pair of reinforcing spring portions 82 are formed to extend. These reinforcing spring portions 82 have a plate-like portion 80 and a concave portion 83, the plate-like portion 80 is disposed along the surface of the terminal portion 74, and gradually increases toward the tip in the vicinity of the tip of the terminal portion 74. A tapered outer edge portion inclined toward the bottom is held by the recess 83.

  Further, the reinforcing member 63 is formed with locking pieces 84 extending laterally on both sides of the base end portion 81, and these locking pieces 84 are more conductive than the stepped portion 77 of the terminal body 62. On the portion 71 side, the terminal body 62 is bent toward the terminal body 62 side, and is further folded toward the back surface side of the terminal body 62. The reinforcing member 63 is prevented from being detached from the terminal main body 62 by the engagement of the locking piece 84 with the stepped portion 77 of the terminal main body 62 and the engagement with the concave portion 83 at the tapered outer edge portion of the terminal portion 74. It is attached. The positioning of the reinforcing member 63 with respect to the terminal body 62 is achieved by engagement of the locking piece 84 with the stepped portion 77 of the terminal body 62 and engagement with the recess 83 at the tapered outer edge of the terminal portion 74. Is done. Compared to the first embodiment, the reinforcing spring portion 82 of the reinforcing member 63 can be given higher springiness, and therefore the elastic force of the reinforcing spring portion 82 can be easily adjusted. In addition, in the third embodiment, the portion of the reinforcing member 63 that protrudes from the surface of the terminal body 62 can be minimized, so that the connection terminal 61 is further downsized.

  When connecting a male tab terminal such as a mini fuse or a blade-type fuse incorporated in an electrical connection box or the like to the connection terminal 61 having the above-described configuration, the male tab terminal is connected between the terminal portions 74 of the terminal main body 62 of the connection terminal 61. Insert it at right angles. In this way, the terminal portion 74 is spread outward by the male tab terminal that is slightly thicker than the interval between the contact portions 76, and the contact portion 76 contacts the surface of the male tab terminal to ensure a conductive state. At this time, since the terminal portion 74 is restrained from being deformed in the direction in which the terminal portions 74 are separated from each other by the reinforcing spring portion 82 of the reinforcing member 63 made of a material having excellent mechanical properties, the terminal body having excellent conductivity. The contact part 76 of the terminal part 74 of 62 is maintained in a state where it is pressed against the surface of the male tab terminal, and a good conduction state by contact with the male tab terminal is obtained.

  As described above, according to the connection terminal according to the third embodiment, the reinforcing member 63 including the reinforcing spring portion 82 that suppresses deformation of the terminal portion 74 of the terminal main body 62 in the separating direction is provided. Because the terminal body 62 is made of a material with excellent electrical characteristics and excellent in electrical conductivity, the male tab terminal such as a mini-fuse or blade-type fuse incorporated in an electrical junction box or the like has high strength and high electrical conductivity. Can be connected. As a result, it is possible to reduce the size while suppressing heat generation due to the input current, and to realize high-density mounting.

  In particular, by forming the terminal body 62 with a copper alloy having excellent conductivity, heat generation due to input current can be suppressed as much as possible, and by forming the reinforcing member 63 with stainless steel having excellent mechanical properties, Downsizing can be realized while ensuring a good connection strength.

  Further, since the reinforcing spring portion 82 has a plate-like portion 80 along the surface of the terminal portion 74 and a concave portion 83 that holds the outer edge portion in the vicinity of the tip of the terminal portion 74, the reinforcing spring portion 82 allows the male tab terminal. At the time of connection, the tip end portion of the terminal portion 74 to which a particularly large moment acts can be reliably held, and further, deformation of the terminal portion 74 in the separating direction can be reliably suppressed.

It is the perspective view seen from the upper surface side of the connecting terminal concerning a 1st embodiment. It is the perspective view seen from the undersurface side of the connecting terminal concerning a 1st embodiment. It is the perspective view seen from the upper surface side of the connecting terminal concerning a 2nd embodiment. It is the perspective view seen from the lower surface side of the connecting terminal concerning a 2nd embodiment. It is the perspective view seen from the upper surface side of the connecting terminal concerning a 3rd embodiment. It is the perspective view seen from the undersurface side of the connecting terminal concerning a 3rd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 31, 61: Connection terminal 2, 32, 62: Terminal main body 3, 33, 63: Reinforcement member 14, 44, 74: Terminal part 22, 52, 82: Reinforcement spring part 23, 53, 83: Recess 50, 80: Plate-shaped part

Claims (6)

A terminal body having a pair of terminal portions extending at intervals, and having excellent conductivity in which a male tab terminal is inserted between these terminal portions; and
A reinforcing member that is attached to the terminal body and has excellent mechanical properties, including a reinforcing spring part that suppresses deformation of the terminal part in the separating direction;
A connection terminal characterized by comprising:   The connection terminal according to claim 1, wherein the terminal body is made of a copper alloy.   The connection terminal according to claim 1, wherein the reinforcing member is made of stainless steel.   The connection terminal according to any one of claims 1 to 3, wherein the reinforcing spring portion has a recess that holds an outer edge portion of the terminal portion over its entire length.   The said reinforcement spring part has a plate-shaped part in alignment with the outer surface of the said terminal part, and the recessed part holding the outer edge part in the front-end | tip vicinity of the said terminal part, The any one of Claims 1-3 characterized by the above-mentioned. The connection terminal described in the item.   The said reinforcement spring part has a plate-shaped part along the surface of the said terminal part, and a recessed part holding the outer edge part in the front-end | tip vicinity of the said terminal part, The any one of Claims 1-3 characterized by the above-mentioned. The connection terminal described in one item.

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