JP2014086283A - Electric connection unit, and crimp terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent infiltration of liquid into a connection part with an electric wire at a crimp terminal of an electric wire with the crimp terminal and thus to suppress bimetallic corrosion while avoiding increase in manufacturing man hours and cost, in an electric connection unit.SOLUTION: In an electric connection unit 1, a terminal holding member 7 houses and holds a crimp terminal 10 of an electric wire 90 with the crimp terminal in a cavity 71 in such an attitude that crimp parts 20, 40 are located lower than a contact part 60. The crimp parts 20, 40 are formed by working a part of a metal plate to bend to a first principal surface 111 side of the metal plate. The contact part 60 is formed by working the other part of the metal plate to bend in a metal plate second principal surface 112 side, and is formed at a position shifted in the metal plate second principal surface 112 side relative to the crimp parts 20, 40.

Description

  The present invention relates to an electrical connection unit including a crimp terminal crimped to an end portion of an electric wire, and a terminal holding member that accommodates and holds a part of the crimp terminal in the terminal-attached electric wire and the electric wire with terminal in a cavity.

  An electrical connection unit mounted on a vehicle includes an electric wire with a terminal electrically connected to a terminal of an electronic component, and a terminal holding member that holds and holds at least a part of a crimp terminal in the electric wire with a terminal in a cavity. ing. The electrical connection box shown in Patent Document 1 is an example of an electrical connection unit.

  A terminal-equipped electric wire mounted on a vehicle usually includes an insulated wire and a crimp terminal attached to an end portion of the insulated wire. Furthermore, the crimp terminal includes a crimp part crimped to the end of the insulated wire and a contact part connected to the mating terminal. Usually, the crimp terminal is composed of one bent metal plate. In the electrical connection unit, the mating terminal is a terminal of an electrical component.

  The crimping part in the crimp terminal is a coated crimping part that is crimped to the insulating coating at the end of the electric wire and a core crimping part that is crimped to the core wire extending from the insulating coating at the end of the electric wire. In general, the coated crimping portion, the core crimping portion, and the contact portion are referred to as an insulation barrel, a wire barrel, and a contact, respectively.

  In many cases, the crimp terminal is made of a metal material containing copper as a main component, such as copper or a copper alloy, and furthermore, a metal plating such as tin is often formed on the surface.

  By the way, in the electric wire with terminal, when the potential difference between the metal constituting the crimp terminal and the metal constituting the core wire of the electric wire is large, different metal contact corrosion due to the medium of the electrolytic solution is likely to occur. In order to avoid dissimilar metal contact corrosion, the terminal-attached electric wire shown in Patent Document 2 includes an anticorrosion coating that covers a portion crimped to the end of the insulated wire in the crimp terminal. This anticorrosion coating is provided in order to prevent the liquid from entering the portion where the core wire of the electric wire and the core wire crimping portion of the crimp terminal contact. In the electric wire with terminal of Patent Document 2, the anticorrosion coating is formed by resin insert molding.

JP 2008-160963 A JP 2001-162657 A

  Usually, the electrical connection unit of the vehicle is arranged in a place where it is difficult for the vehicle to get wet. However, the electrical connection unit is also desired to have a structure that suppresses the contact corrosion of dissimilar metals in preparation for a case where liquid enters the electrical connection unit under unexpected circumstances.

  For example, in order to suppress contact corrosion of different metals, it is conceivable that a terminal-attached electric wire having an anticorrosion coating as shown in Patent Document 2 is adopted in the electrical connection unit. However, forming the anti-corrosion coating on each of the end portions of many terminal-attached electric wires in the electrical connection unit leads to an increase in man-hours and cost for manufacturing the electric wires with terminals.

  The present invention prevents an increase in manufacturing man-hours and an increase in cost in an electrical connection unit, while preventing liquid from entering a connection portion of a crimped terminal of a terminal-attached electric wire with a wire, and thus suppressing contact corrosion of dissimilar metals. For the purpose.

  The electrical connection unit according to the first aspect of the present invention includes the following components. A 1st component is an electric wire with a terminal which has an electric wire, the crimping | compression-bonding part crimped | bonded to the edge part of this electric wire, and the crimp terminal which has a contact part connected with the other party terminal. The second component is made of a non-conductive material, and the terminal holding member that holds and holds the crimp terminal of the electric wire with terminal in the cavity in a posture in which the crimp part is positioned below the contact part. It is. And the said crimp part and the said contact part in the said crimp terminal consist of one metal plate bent. Furthermore, the said crimping | compression-bonding part is a part by which a part of said metal plate was bent to the 1st surface side of the said metal plate. Further, the contact portion is bent to the second surface side opposite to the first surface, and another part of the metal plate is bent toward the second surface side with respect to the crimp portion. It is a part formed at the position.

  The electrical connection unit according to the second aspect of the present invention is an aspect of the electrical connection unit according to the first aspect. In the electrical connection unit according to the second aspect, the crimp terminal further includes a connecting portion that is a portion connecting the crimp portion and the contact portion in the metal plate. And the said connection part is formed in the position which the part connected to the said crimping | crimped part shifted | deviated to the said 1st surface side rather than the part connected to the said contact part, and said 2nd surface from the said 1st surface side This is a portion in which an opening penetrating to the side is formed.

  The electrical connection unit according to the third aspect of the present invention is an aspect of the electrical connection unit according to the first aspect. In the electrical connection unit according to the third aspect, the crimp terminal further includes a connecting portion that is a portion connecting the crimp portion and the contact portion in the metal plate. The connecting portion includes a cut-and-raised portion that is cut and raised obliquely from the base portion near the pressure-bonding portion toward the first surface.

  The electrical connection unit according to the fourth aspect of the present invention is an aspect of the electrical connection unit according to any one of the first aspect to the third aspect. In the electrical connection unit according to the fourth aspect, the terminal holding member includes a lower cover portion that covers the periphery of the crimp portion of the crimp terminal on the lower side of the portion where the cavity is formed.

  Moreover, this invention may be caught as invention of the crimp terminal contained in the electrical connection unit which concerns on each aspect shown above.

  In the electrical connection unit, the liquid that has entered the cavity of the terminal holding member falls further down along the contact portion of the crimp terminal. And in the crimp terminal of each said aspect, the crimp part is formed in the position which shifted | deviated to one side of the surface of the metal plate which comprises a crimp part and a contact part with respect to a contact part. That is, the crimping part is formed at a position shifted from a position directly below the contact part. Therefore, most of the liquid that has fallen downward through the contact portion passes through the side of the crimping portion and further falls downward.

  Therefore, if the crimp terminal in each of the above aspects is employed, the liquid can be prevented from entering the crimp section that is the connection section between the electric wire and the crimp terminal. As a result, even when the potential difference between the metal constituting the crimp terminal and the metal constituting the core of the electric wire is large, the dissimilar metal contact corrosion is suppressed.

  In addition, the crimp part and the contact part of the crimp terminal in each of the above aspects are the same except that the bending direction of the contact part with respect to the crimp part is different from the crimp part and contact part of the conventional general crimp terminal. It is obtained by the material (metal plate) and the same bending process. Therefore, the crimp terminal in each aspect described above can be easily manufactured by using existing materials and existing processing devices for conventional crimp terminals. Therefore, unlike the case where the crimp portion of the crimp terminal is covered with the anticorrosion coating, the man-hour and cost of manufacturing the terminal-attached electric wire are not increased.

  Therefore, if the electrical connection unit according to each of the above aspects is adopted, while preventing an increase in manufacturing man-hours and an increase in cost, it prevents liquid from entering the connection portion with the electric wire in the crimp terminal of the electric wire with terminal, As a result, it is possible to suppress contact corrosion of different metals.

  Moreover, in the connection part which connects the crimping | compression-bonding part and contact part in the crimp terminal of a 2nd aspect, the position which the part connected to a crimping part shifted | deviated to the bending side (1st surface side) of the crimping part rather than the part connected to a contact part. Is formed. Further, an opening is formed in the connecting portion. Therefore, the liquid that falls along the surface of the contact portion where the crimping portion exists (first surface side) does not go to the wire of the crimping portion and does not go to the wire of the crimping portion (second side) Go to the side). As a result, the liquid can be more reliably prevented from entering the connecting portion between the electric wire and the crimp terminal.

  In the crimp terminal according to the third aspect, the connecting portion that connects the crimp portion and the contact portion is obliquely cut from the base portion near the crimp portion to the side where the crimp portion is present (first surface side). A cut-and-raised part is formed. Therefore, an opening which is a trace of the cutting and raising process is formed in the connecting portion. Therefore, the liquid falling along the surface of the contact portion where the crimping portion is present (first surface side) hits the cut-and-raised portion of the coupling portion, and passes through the opening of the coupling portion without going to the wire of the crimping portion. Passes through to the side (second surface side) where no exists. As a result, the liquid can be more reliably prevented from entering the connecting portion between the electric wire and the crimp terminal.

  Moreover, in the 4th aspect, the lower cover part of the terminal holding member has covered the circumference | surroundings of the crimping | compression-bonding part of a crimp terminal. For this reason, it is possible to prevent the liquid splashing in the lateral direction from entering the connecting portion between the crimp terminal and the electric wire.

  Moreover, in the 5th aspect, the core wire and crimp terminal of an electric wire are comprised with the kind of different metal material. This configuration is a configuration in which dissimilar metal contact corrosion is particularly likely to occur when the liquid enters the core wire portion of the insulated wire. Therefore, the effect of the present invention that can prevent liquid from entering the connecting portion between the crimp terminal and the electric wire becomes more remarkable.

It is the top view and bottom view of the electrical connection unit 1 which concern on embodiment of this invention. 2 is a longitudinal sectional view of the electrical connection unit 1. FIG. It is a side view of the electric wire 90 with a terminal with which the electrical connection unit 1 is provided. It is a top view of the electric wire 90 with a terminal. It is a bottom view of the electric wire 90 with a terminal. It is a side view of 90 A of electric wires with a terminal which concerns on the application example applicable to the electrical connection unit 1. FIG. It is a top view of 90 A of electric wires with a terminal.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention.

<Embodiment>
Hereinafter, the configuration of the electrical connection unit 1 according to the embodiment of the present invention will be described with reference to FIGS. 1A is a plan view of the electrical connection unit 1, and FIG. 1B is a bottom view of the electrical connection unit 1. FIG. 2 is a longitudinal sectional view of the electrical connection unit 1 in the II-II plane shown in FIG.

  The electrical connection unit 1 is a device in which a plurality of electrical components 100 are mounted and electrically connects the electrical components 100 and electric wires. In FIG. 2, the electrical component 100 is drawn with a virtual line (two-dot chain line). The electrical component 100 is, for example, a fuse or a relay. As shown in FIGS. 1 and 2, the electrical connection unit 1 includes a terminal-attached electric wire 90 and a terminal holding member 7, and has a structure in which they are combined.

  In the following description, a portion formed for each electrical component 100 in the electrical connection unit 1 is referred to as a unit component block 700. A portion formed for each lead terminal 101 of one electrical component 100 in the electrical connection unit 1 is referred to as a unit terminal block 70. In the present embodiment, each of the electrical components 100 has two lead terminals 101, so the electrical connection unit 1 has two unit terminal blocks 70 for each unit component block 700. FIG. 2 is a longitudinal sectional view of one unit component block 700.

<Wire>
As shown in FIGS. 3 to 5, the terminal-attached electric wire 90 includes an electric wire 9 and a crimp terminal 10. The electric wire 9 is an insulated wire having a core wire 91 made of a conductive material and an insulating coating 92 made of a non-conductive material covering the periphery of the core wire 91.

<Crimp terminal>
The crimp terminal 10 is a metal fitting connected to the end of the electric wire 9 by crimping. The crimp terminal 10 includes a coated crimp part 20, a first connection part 30, a core wire crimp part 40, a second connection part 50, and a contact part 60. The covering crimping portion 20, the first connecting portion 30, the core wire crimping portion 40, the second connecting portion 50, and the contact portion 60 are configured by a single metal plate that is bent.

  The first connecting portion 30 is a portion that connects the coated crimping portion 20 and the core wire crimping portion 40. Similarly, the second connecting portion 50 is a portion that connects the core wire crimping portion 40 and the contact portion 60. The crimp terminal 10 constitutes at least a part of each of the coated crimping portion 20, the first connecting portion 30, the core wire crimping portion 40, the second connecting portion 50, and the contact portion 60. It has the plate-shaped board | substrate part 11 formed in this. 2-5, the board | substrate part 11 is formed along one plane.

  The covering crimping portion 20 is a so-called insulation barrel. In the terminal-attached electric wire 90, the coated crimping portion 20 is crimped to the insulating coating 92 at the end of the electric wire 9. The core wire crimping portion 40 is a so-called wire barrel. In the terminal-attached electric wire 90, the core wire crimping portion 40 is crimped to the core wire 91 extending from the insulating coating 92 at the end of the electric wire 9.

  In the crimp terminal 10, the coated crimp part 20 and the core wire crimp part 40 are connected to the end part of the electric wire 9 by being caulked to the end part of the electric wire 9. The coated crimping part 20 and the core crimping part 40 in the crimping terminal 10 are examples of the crimping part of the crimping terminal 10. In the following description, portions from the coated crimping portion 20 to the core wire crimping portion 40 are collectively referred to as a crimping portion 20-40.

  The contact part 60 is a part connected to a counterpart terminal. In the present embodiment, the contact portion 60 is a so-called female terminal side contact portion in which a terminal insertion hole 61 into which a rod-like mating terminal is inserted is formed. The counterpart terminal is the lead terminal 101 of the electrical component 100.

  In the electric wire 90 with a terminal, the case where the core wire 91 of the electric wire 9 is comprised with a metal material different in kind from the metal material which comprises the crimp terminal 10 can be considered. For example, it is conceivable that the core wire 91 is an aluminum wire, that is, a wire (aluminum or aluminum alloy) containing aluminum as a main component. In this case, it is conceivable that the crimp terminal 10 is a member made of a metal material mainly composed of copper. For example, it is conceivable that the crimp terminal 10 is composed of a copper alloy base material and a tin plating formed on the surface of the base material.

  In the following description, a single metal plate constituting the cover crimping portion 20, the first connecting portion 30, the core crimping portion 40, the second connecting portion 50, and the contact portion 60 is referred to as a terminal metal plate. In the present embodiment, the crimp terminal 10 is a bent terminal metal plate itself, but the crimp terminal 10 is obtained by adding another member to the bent terminal metal plate. It is not unthinkable.

  In the crimp terminal 10, the crimp part 20-40 and the first connecting part 30 are parts in which a part of the terminal metal plate is bent to one of the front and back surfaces of the terminal metal plate. .

  In the following description, the surface on the bending direction side of the crimping portion 20-40 in the terminal metal plate is referred to as a first main surface 111. In addition, a surface opposite to the first main surface 111 in the terminal metal plate is referred to as a second main surface 112. In FIG. 3, the left direction toward the drawing is the direction on the first main surface 111 side, and the right direction toward the drawing is the direction on the second main surface 112 side.

  As shown in FIGS. 2 and 3, in the crimp terminal 10, the contact portion 60 is a portion in which another part of the terminal metal plate is bent toward the second main surface 112 side. Thereby, the contact part 60 is formed in the position which shifted | deviated to the 2nd main surface 112 side with respect to the crimping | compression-bonding part 20-40. In other words, the crimping part 20-40 is formed at a position shifted to the first main surface 111 side with respect to the contact part 60.

  Therefore, in the electrical connection unit 1, the crimping part 20-40 of the crimping terminal and the end part of the electric wire 9 connected thereto do not exist in the direction directly below the contact part 60.

  In the crimp terminal 10, the substrate portion 11 is a portion that forms a boundary between the first main surface 111 side and the second main surface 112 side of the terminal metal plate. Therefore, the board | substrate part 11 has comprised the partition between the area | region right under the contact part 60, and the part connected to the crimping | compression-bonding part 20-40 in the electric wire 9. FIG.

  The surface on the bending direction side of the crimping portion 20 in the substrate portion 11 is the first principal surface 111, and the surface on the bending direction side of the contact portion 60 in the substrate portion 111 is the second principal surface 112.

  Further, in the crimp terminal 10, a cut-and-raised portion that is obliquely cut and raised from the base portion 511 at the position near the crimp portion 20-40 toward the first main surface 111 side is provided in the portion of the substrate portion 111 in the second connecting portion 50. 51 is formed. Therefore, the second connecting portion 50 is formed with an opening 52 that is a trace of the cut and raised process. In addition, the cut-and-raised part 51 is formed along a surface that forms an acute angle with respect to the surface along which the substrate unit 11 extends.

<Terminal holding member>
The terminal holding member 7 is made of a non-conductive material, and is a member formed with a plurality of cavities 71 for receiving and holding the contact portions 60 of the crimp terminals 10 in the electric wires 90 with terminals one by one. The terminal holding member 7 is a molded member made of non-conductive resin such as polyamide (PA), polypropylene (PP), or ABS resin.

  Further, the terminal holding member 7 has a component mounting port 72 that communicates with the upper opening 712 of the cavity 71, and a crimping portion accommodation space 73 that communicates with the lower opening 711 of the cavity 71 on the opposite side to the component mounting port 72. Is formed. The lower portion of the terminal holding member 7 constitutes a lower cover portion 74 that covers the periphery of the crimping portion accommodation space 73.

  The terminal holding member 7 also includes a retainer (not shown) that keeps the contact portion 60 held in the cavity 71. The retainer is a retaining portion that prevents the contact portion 60 from coming out of the lower opening 711 of the cavity 71.

<Terminal holding member: Component mounting port>
The component mounting opening 72 is a recess into which the electrical component 100 is inserted. A plurality of component mounting ports 72 are formed in the terminal holding member 7, and a plurality of cavities 71 are formed for each component mounting port 72. In other words, in the terminal holding member 7, one component mounting opening 72 is formed for each unit component block 700, and one cavity 71 is formed for each unit terminal block 70.

  In the present embodiment, each electrical component 100 has two lead terminals 101, so that two cavities 71 are formed for each component mounting port 72.

<Terminal holding member: cavity>
The cavity 71 is a part that accommodates the contact portion 60 of the crimp terminal 10 in the terminal-attached electric wire 90.

  The contact part 60 of the crimp terminal 10 is accommodated in the cavity 71 in such a posture that the crimp part 20-40 is positioned below the contact part 60. Therefore, the cavity 71 is formed extending in the vertical direction. The cavity 71 communicates with the crimping portion accommodation space 73 below the terminal holding member 7 through the lower opening 711, and communicates with the component mounting opening 72 through the upper opening 712.

  The lower opening 711 of the cavity 71 is an insertion port for the contact portion 60 of the terminal-attached electric wire 90, and is formed larger than the size of the outline of the contact portion 60. On the other hand, the upper opening 712 of the cavity 71 communicates with the terminal insertion hole 61 of the contact portion 60 in the crimp terminal 10 and is formed smaller than the size of the contour of the crimp terminal 10. Therefore, the upward movement of the contact portion 60 accommodated in the cavity 71 is limited by the edge of the upper opening 712 of the cavity 71.

  The contact portion 60 of the terminal-attached electric wire 90 is inserted into the cavity 71 until the tip reaches the edge of the upper opening 712 of the cavity 71.

<Terminal holding member: Lower cover>
The lower cover portion 74 is a portion that covers the periphery of the crimp portion accommodating space 73 in which the crimp portions 20-40 of the plurality of crimp terminals 10 are present. That is, the lower cover portion 74 covers the periphery of the crimping portions 20-40 of the plurality of crimping terminals 10 on the lower side of the portion where the plurality of cavities 71 are formed.

<Effect>
In the electrical connection unit 1, the liquid that has entered the cavity 71 of the terminal holding member 7 falls further down along the contact portion 60 of the crimp terminal 10. And in the crimp terminal 10, the crimp part 20-40 is formed in the position shifted | deviated with respect to the contact part 60 at the 1st main surface 111 side of the metal plate for terminals.

  That is, in the electrical connection unit 1, the crimping portion 20-40 is formed at a position that is shifted from a position directly below the contact portion 60. For this reason, most of the liquid that has dropped down through the contact portion 60 passes by the side of the crimping portion 20-40 and falls further downward, and the terminal holding member 7 is opened from the lower opening 741 of the lower cover portion 74. It is discharged downward.

  Therefore, if the electrical connection unit 1 including the crimp terminal 10 is employed, the liquid can be prevented from entering the crimp part 20-40 that is a connection part between the electric wire 9 and the crimp terminal 10. As a result, even when the potential difference between the metal constituting the crimp terminal 10 and the metal constituting the core 91 of the electric wire 9 is large, dissimilar metal contact corrosion is suppressed.

  Further, the crimping part 20-40 and the contact part 60 of the crimping terminal 10 are different only in the bending direction of the contact part 60 with respect to the crimping part 20-40 as compared with the crimping part and contact part of the conventional general crimping terminal. Thus, it is obtained by the same material (metal plate) and the same bending process. Therefore, the crimp terminal 10 can be easily manufactured by using existing materials for existing crimp terminals and existing processing apparatuses. Therefore, unlike the case where the crimp portion of the crimp terminal is covered with the anticorrosion coating, the man-hour and cost of manufacturing the terminal-attached electric wire 90 are not increased.

  Therefore, if the electrical connection unit 1 is adopted, the invasion of liquid into the connection portion of the crimp terminal 10 of the terminal-attached electric wire 90 to the electric wire 9 is prevented while avoiding an increase in manufacturing man-hours and an increase in cost. It becomes possible to suppress metal contact corrosion.

  In the crimp terminal 10, the second connecting portion 50 that connects the crimp portion 20-40 and the contact portion 60 is located at a position near the crimp portion 20-40, that is, from the root portion 511 at the lower position. A cut-and-raised portion 51 that is obliquely cut and raised toward the first main surface 111 side where −40 exists is formed. Further, the second connecting portion 50 is formed with an opening 52 formed by forming the cut and raised portion 51. Therefore, the liquid falling along the surface on the first main surface 111 side in the contact portion 60 hits the cut-and-raised portion 51 of the second connecting portion 50 and does not go to the electric wire 9 of the crimping portion 20-40. 50 passes through the second main surface 112 side where the electric wire 9 is not present. As a result, the liquid can be more reliably prevented from entering the connecting portion between the electric wire 9 and the crimp terminal 10.

  In the electrical connection unit 1, the lower cover portion 74 of the terminal holding member 7 covers the periphery of the crimp portion 20-40 of the crimp terminal 10. Therefore, it is also possible to prevent the liquid splashing in the lateral direction from entering the connecting portion between the crimp terminal 10 and the electric wire 9.

  Further, in the electrical connection unit 1, when the core wire 91 of the electric wire 9 is made of a metal material containing aluminum as a main component and the crimp terminal 10 is made of a metal material containing copper as a main component, liquid enters the portion of the core wire 91. This is particularly likely to cause contact corrosion of dissimilar metals. In such a case, the effect of the electrical connection unit 1 that can prevent liquid from entering the connection portion between the crimp terminal 10 and the electric wire 9 becomes more remarkable.

<Application example>
Next, with reference to FIGS. 6 and 7, the terminal-attached electric wire 90 </ b> A and the crimp terminal 10 </ b> A included in the electric wire 90 </ b> A according to an application example applicable to the electrical connection unit 1 will be described. FIG. 6 is a side view of the electric wire with terminal 90A, and FIG. 7 is a plan view of the electric wire with terminal 90A. In FIG. 6, a part of the terminal holding member 7 is drawn by a virtual line (two-dot chain line).

  The crimp terminal 10 </ b> A of the terminal-attached electric wire 90 </ b> A is different from the crimp terminal 10 shown in FIGS. 1 to 5 only in the shape of the portion (second connection portion) that connects the crimp portion 20-40 and the contact portion 60. It has a structure. 6 and 7, the same components as those shown in FIGS. 1 to 5 are given the same reference numerals. Hereinafter, only differences between the crimp terminal 10A and the crimp terminal 10 will be described.

  Similarly to the crimp terminal 10, the crimp terminal 10A is also composed of a single coated metal plate for terminal, a coated crimp part 20, a first connection part 30, a core crimp part 40, a second connection part 50A, and a contact point. Part 60.

  Also, in the crimp terminal 10A, as in the crimp terminal 10, the crimp part 20-40 and the first connection part 30 are portions where a part of the terminal metal plate is bent to the first main surface 111 side. The contact portion 60 is a portion where the other part of the terminal metal plate is bent toward the second main surface 112 side.

  Similarly to the crimp terminal 10, the crimp terminal 10 </ b> A also constitutes at least a part of each of the coated crimp part 20, the first connection part 30, the core wire crimp part 40, the second connection part 50 </ b> A, and the contact part 60. A plate-shaped substrate portion 11 </ b> A formed in series over the contact portion 60 is provided.

  However, the second connecting portion 50 </ b> A that connects the crimping portion 20-40 and the contact portion 60 in the crimping terminal 10 </ b> A has a different structure from the second connecting portion 50 of the crimping terminal 10. As shown in FIG. 6, the portion 501 connected to the crimping portion 20-40 in the second connecting portion 50A is closer to the first main surface 111 side (the bending side of the crimping portion 20-40) than the portion 502 connected to the contact portion 60. It is formed at a shifted position.

  Therefore, in the board portion 11A of the crimp terminal 10A, the boundary portion between the crimp portion 20-40 and the second connection portion 50A is closer to the first main surface 111 side (crimp pressure) than the boundary portion between the contact portion 60 and the second connection portion 50A. It is formed to be bent so as to be shifted to the bent side of the portion 20-40.

  Furthermore, an opening 53 that penetrates from the first main surface 111 side to the second main surface 112 side is formed in the second connecting portion 50A. That is, the opening 53 is formed in a portion forming the substrate portion 11 in the second connecting portion 50A.

  When the crimp terminal 10 </ b> A is employed in the electrical connection unit 1 instead of the crimp terminal 10, the liquid that falls along the surface of the contact portion 60 on the first main surface 111 side (the side on which the crimp portion 20-40 exists). Passes through the opening 53 of the second connecting portion 50A to the second main surface 112 side where the electric wire 9 does not exist without going to the electric wire 9 of the crimping portion 20-40. As a result, the liquid can be more reliably prevented from entering the connecting portion between the electric wire 9 and the crimp terminal 10A.

<Others>
In the example shown in FIG. 2, in the electrical connection unit 1, the crimping portion accommodation space 73 in the lower cover portion 74 of the terminal holding member 7 is partitioned for each crimping terminal 10 by a partition wall. However, it is also conceivable that the crimping portion accommodating space 73 in the lower cover portion 74 of the terminal holding member 7 is not partitioned by a partition wall. In this case, the lower cover portion 74 collectively covers the crimping portions 20-40 of the plurality of crimping terminals 10 below the portion of the terminal holding member 7 where the plurality of cavities 71 are formed.

  In addition, it is also conceivable that the terminal holding member 7 includes a flange that projects directly above the crimping portions 20-40 of the plurality of crimping terminals 10 instead of the lower cover member 74. In this case, the collar portion indicates that the liquid falling from directly above the crimping portion 20-40, that is, the liquid falling without passing through the cavity 71 and the contact portion 60 enters the crimping portion 20-40. prevent.

  The electrical connection unit according to the present invention is configured by appropriately modifying or partially omitting the embodiment and application examples described above within the scope of the invention described in each claim. Is also possible.

DESCRIPTION OF SYMBOLS 1 Electrical connection unit 7 Terminal holding member 9 Electric wire 10, 10A Crimp terminal 11, 11A Substrate part 20 Crimp part 20 Cover crimp part 30 First connection part 40 Core wire crimp part 20-40 Crimp part 50, 50A Second connection part (connection Part)
51 Cut-and-raised part 52, 53 Opening 60 Contact part 61 Terminal insertion hole 70 Unit terminal block 71 Cavity 72 Component mounting port 73 Crimping part accommodating space 74 Lower cover part 90, 90A Electric wire with terminal 91 Core wire 92 Insulation coating 100 Electrical component 101 Lead Terminal 111 Substrate part 111 First main surface 112 Second main surface 511 Root part 700 Unit component block 711 Lower opening 712 Upper opening 741 Lower opening of the lower cover part

Claims (6)

A terminal-attached electric wire having an electric wire and a crimping portion having a crimping portion crimped to an end portion of the electric wire and a contact portion connected to a mating terminal;
A terminal holding member made of a non-conductive material, and containing and holding the crimp terminal of the electric wire with terminal in a cavity in a posture in which the crimp part is positioned below the contact part,
The crimping part and the contact part in the crimping terminal are made of a single metal plate that is bent,
The crimping portion is a portion where a part of the metal plate is bent to the first surface side of the metal plate,
In the contact portion, the other part of the metal plate is bent to the second surface side opposite to the first surface, and shifted to the second surface side with respect to the crimping portion. An electrical connection unit that is a part formed at a position. The electrical connection unit according to claim 1,
The crimp terminal further includes a connecting portion which is a portion connecting the crimp portion and the contact portion in the metal plate,
The connecting portion is formed at a position where a portion connected to the crimping portion is shifted to the first surface side than a portion connected to the contact portion, and from the first surface side to the second surface side. An electrical connection unit, which is a portion in which an opening is formed. The electrical connection unit according to claim 1,
The crimp terminal further includes a connecting portion which is a portion connecting the crimp portion and the contact portion in the metal plate,
The connecting portion includes an electrical connection unit including a cut-and-raised portion that is obliquely cut and raised from the base portion near the crimping portion toward the first surface. The electrical connection unit according to any one of claims 1 to 3,
The terminal holding member is an electrical connection unit including a lower cover portion that covers the periphery of the crimp portion of the crimp terminal on the lower side of the portion where the cavity is formed. The electrical connection unit according to any one of claims 1 to 4,
The core wire of the electric wire is made of a metal material mainly composed of aluminum,
The crimp terminal is an electrical connection unit made of a metal material mainly composed of copper. It has a crimping part that is crimped to the end of the electric wire and a contact part that is connected to the mating terminal,
The crimping part and the contact part are made of a bent metal sheet,
The crimping portion is a portion where a part of the metal plate is bent to the first surface side of the metal plate,
The contact portion is a position where the other part of the metal plate is bent to the second surface side opposite to the first surface, and shifted to the second surface side with respect to the crimping portion. Crimp terminal that is a part formed in

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