JP2024042935A - Terminal fitting - Google Patents

Abstract

To provide a terminal fitting which can orient a covered electric wire in a desired direction and connect it to a mating connection portion.SOLUTION: A terminal fitting 1 includes a round terminal portion 11 connected to the mating connection portion, a wire joining portion 12 that is continuous with this terminal portion 11 and has either the front or back plane serving as a joining plane 121 to which the exposed core wire 21 of a covered wire 2 is joined, and a wire binding portion 13 that is a metal portion provided integrally with the wire joining portion 12, in which an adjacent covered portion 22 adjacent to the exposed core wire 21 of the covered wire 2 is placed, and six through-holes 131 for passing through cable ties 3 for binding and fixing the adjacent covered portions 22 are arranged in a convex arc shape on the side opposite to the wire joining portion 12.SELECTED DRAWING: Figure 2

Description

The present invention relates to a terminal fitting for connecting a covered electric wire to a mating connection part.

2. Description of the Related Art Conventionally, a terminal fitting for connecting a covered electric wire to a mating connection part is known (see, for example, Patent Document 1). In the terminal fitting of Patent Document 1, one end side is bolted to the mating connection part, the exposed core wire of the covered electric wire is joined to the other end side, and the exposed core wire is connected to the exposed core wire with a pair of barrel pieces provided on the other end side. Adjacent covering portions are crimped and fixed. Further, in this terminal fitting, a regulating structure is provided on one end side to be bolted to the other end to be engaged with the mating connection portion and to regulate rotation around the bolt.

Japanese Patent Application Publication No. 2014-107104

Here, in the above-mentioned terminal fitting, the orientation of the covered electric wire when connected to the mating connection portion is uniquely determined. Therefore, in order to orient the covered wire in a desired direction, it is necessary to prepare and use a plurality of terminal fittings corresponding to a plurality of assumed directions. Such selective use of a plurality of terminal fittings is not desirable from the viewpoint of component costs and the like.

Therefore, the present invention has focused on the above-mentioned problems, and an object of the present invention is to provide a terminal fitting that can direct a covered wire in a desired direction and connect it to a mating connection portion.

In order to solve the above problem, the terminal fitting is a part of the one end side of a band-shaped metal plate whose edge on one end side is arcuate, and has a round shape that is connected to the mating connection part. a terminal portion, an electric wire joining portion that is a portion of the metal plate at the other end that is continuous with the terminal portion, and whose front or back plane is a joining plane to which an exposed core wire of the covered electric wire is joined; A metal part that is integrally provided with the electric wire joining part adjacent to the other end side edge of the metal plate, on which an adjacent covered part adjacent to the exposed core wire of the covered electric wire is placed; and an electric wire binding portion in which three or more through-holes for passing a binding band for binding and fixing the adjacent covered portions are arranged in a convex arc shape on the side opposite to the electric wire joint portion. It is characterized by

According to the above-mentioned terminal fitting, the covered electric wire can be oriented in a desired direction and connected to the mating connection portion.

FIG. 2 is a perspective view showing a terminal fitting according to one embodiment. FIG. 2 is a perspective view showing a state in which a covered electric wire is joined to the terminal fitting shown in FIG. 1. FIG. FIG. 3 is a plan view of the terminal fitting with the covered electric wire shown in FIG. 2, viewed from the covered electric wire side. FIG. 5 is a side view of the terminal fitting with the coated electric wire shown in FIGS. 3 and 4, as viewed from the direction of arrow V11 in FIG. 3. FIG. 5 is a schematic diagram showing how the terminal fittings shown in FIGS. 1 to 4 are connected to a mating connection portion in a state in which the insulated wire is oriented in a desired direction even when it is difficult to change the mounting direction at the terminal portion.

Hereinafter, one embodiment of the terminal fitting will be described.

FIG. 1 is a perspective view showing a terminal fitting according to one embodiment, and FIG. 2 is a perspective view showing a covered electric wire joined to the terminal fitting shown in FIG. 1. 3 is a plan view of the terminal fitting with the covered wire shown in FIG. 2, viewed from the covered wire side, and FIG. 4 is the terminal with the covered wire shown in FIGS. 3 and 4. FIG. 4 is a side view of the metal fittings viewed from the direction of arrow V11 in FIG. 3. FIG.

The terminal fitting 1 of the present embodiment is a member for connecting a covered electric wire 2 to a mating connection portion, such as a battery terminal attached to a battery of an automobile or the like, as a mating connection portion. The terminal fitting 1 includes a terminal portion 11, a wire joining portion 12, and a wire binding portion 13, and is formed as an integral metal component by, for example, cutting.

The terminal portion 11 is a part of a band-shaped metal plate 1a as described below. This metal plate 1a has a semicircular edge 1a-2 on one end side 1a-1, and an edge 1a-2 on the other end side 1a-3 opposite to the edge 1a-2 on one end side 1a-1. It is a part having a band plate shape with semicircular shapes at both ends and a semicircular shape that is convex on the side. The terminal portion 11 is a part of one end side 1a-1 of the metal plate 1a, and is a round portion connected to a mating connection portion. This terminal portion 11 is provided with a connecting hole 111 penetrating through the center of the arc shape of the edge 1a-2 of the one end side 1a-1 for connecting the mating connection portion and the terminal portion 11. There is. The terminal portion 11 will be connected to the mating connection portion by a bolt or the like passing through the connection hole 111.

The electric wire joint portion 12 is a portion of the other end side 1a-3 of the metal plate 1a that is continuous with the terminal portion 11, and is a portion in which either the front or back plane is a joint plane 121 to which the exposed core wire 21 of the coated electric wire 2 is joined. The exposed core wire 21 is joined to the joint plane 121, for example, by ultrasonic joining or the like.

The wire bundling portion 13 is a metal portion provided adjacent to the edge 1a-4 of the other end side 1a-3 of the metal plate 1a and integral with the wire joint portion 12. The adjacent coated portion 22 adjacent to the exposed core 21 of the coated wire 2 is placed on the wire bundling portion 13, and the adjacent coated portion 22 is bound and fixed by a cable tie 3. The exposed core 21 from the adjacent coated portion 22 bound and fixed to the wire bundling portion 13 is joined to the wire joint portion 12 by ultrasonic bonding or the like. The wire bundling portion 13 has three or more through holes 131 for passing the cable tie 3 arranged in a convex arc shape on the opposite side to the wire joint portion 12, six in this embodiment.

Further, the wire binding portion 13 is formed with a binding plane 132 that is one step lower than the joining plane 121 of the wire joining portion 11 in the thickness direction D11 of the metal plate 1a according to the thickness t11 of the sheathing 2a in the covered wire 2. . Further, a through hole 131 is formed in the wire binding portion 13 so as to open to the binding plane 132. Further, in this wire binding portion 13, six through holes 131 are formed in a semicircular shape arranged at equal intervals along the edge 1a-4 of the other end side 1a-3 of the metal plate 1a. The wire binding portion 13 has a semicircular arcuate strip shape extending along the arrangement of these six through holes 131.

Further, in this wire binding portion 13, the surface on the joining plane 121 side is a binding plane 132 that is one step lower than this joining plane 121. On the other hand, the thickness t12 of the wire binding portion 13 The thickness is approximately the same as the thickness t13 of the metal plate 1a. As a result, the back surface 133 of the wire binding portion 13 on the opposite side to the binding plane 132 becomes a surface that is one step higher than the back surface 122 on the opposite side to the joining plane 121 of the wire joining portion 12 according to the thickness t11 of the coating 2a. ing. Furthermore, on the back surface 133 side of the wire binding portion 13, as shown in FIG. An arcuate shelf portion 134 is formed that extends in an arcuate manner. The wire binding portion 13 is formed integrally with the metal plate 1a with the edge 1a-4 of the other end side 1a-3 of the metal plate 1a including the wire joint portion 12 resting on this arcuate shelf portion 134. ing.

According to the terminal fitting 1 of the embodiment described above, first, depending on the shape of the mating connection part, etc., the end edge 112 of the round terminal portion 11, that is, the one end side 1a-1 of the metal plate 1a, The mounting direction of the terminal fitting 1 can be changed along the arc shape of the edge 1a-2. That is, by connecting this terminal fitting 1 to the mating connection part in a desired installation direction, the covered wire 2 connected via the wire joint part 12 and the wire binding part 13 is oriented in the desired direction, and the mating part connection part is oriented in the desired direction. can be connected to.

Here, it may be difficult to change the mounting direction of the terminal portion 11 depending on the shape of the mating connection portion or the like. According to the terminal fitting 1 of this embodiment, even in such a case, the covered wire 2 can be oriented in a desired direction and connected to the mating connection portion, as described below.

Figure 5 shows that according to the terminal fittings shown in Figures 1 to 4, even if it is difficult to change the installation direction at the terminal part, the coated wire can be connected to the mating connection part with the wire oriented in the desired direction. FIG.

In the example of FIG. 5, a battery terminal 4 attached to a battery is illustrated as the other party connection part. The battery terminal 4 includes a battery connection part 41 that is connected to a battery post installed upright on the battery, and a bolt terminal 42 to which a load-side component to which power from the battery is supplied is fastened. . The load-side connection portion 43 on which the bolt terminal 42 is erected is defined by a pair of side wall ribs 44 erected with the bolt terminal 42 therebetween. The load-side component is connected to the load-side connection portion 43 in a state in which movement around the bolt terminal 42 is restricted by the pair of side wall ribs 44 . In the example of FIG. 5, the terminal fitting 1 shown in FIGS. 1 to 4 is connected to the load-side connection portion 43 in a substantially immovable manner by a pair of side wall ribs 44. That is, in the example shown in FIG. 5, the terminal fitting 1 is connected to the load-side connection portion 43 in a state where it is difficult to change the attachment direction of the terminal portion 11.

Even in such a case, the terminal fitting 1 of this embodiment can orient the insulated electric wire 2 in a desired direction by utilizing the six through holes 131 arranged in an arc in the electric wire bundling portion 13. That is, a desired pair of through holes 131 is selected from the six through holes 131, and the cable tie 3 is passed through the desired pair of through holes 131 while surrounding and bundling the adjacent covered portion 22 in the circumferential direction, thereby orienting the insulated electric wire 2 in a desired direction. Figure 5 shows an example of the insulated electric wire 2 being oriented in three different directions.

As described above, according to the terminal fitting 1 of the present embodiment, the shape of the edge of the round terminal portion 11 and the arrangement shape of the six through holes 131 in the wire binding portion 13 combine to allow the covered wire 2 to be connected to the desired position. It can be directed in any direction. Since it is possible to orient the insulated wire 2 in a desired direction in one terminal fitting 1, there is no need to prepare and use a plurality of terminal fittings in relation to the direction of the insulated electric wire 2, thereby reducing component costs. Can be done.

Further, in this embodiment, the wire binding portion 13 is formed with a binding plane 132 that is one step lower than the joining plane 121 according to the thickness t11 of the coating 2a. According to this configuration, the exposed core wires 21 can be extended from the adjacent covered parts 22 placed on the binding plane 132 onto the joining plane 121 while suppressing the gap therebetween. Since the gap between the exposed core wire 21 and the bonding plane 121 is suppressed, the bonding operation of the exposed core wire 21 to the bonding plane 121 by, for example, ultrasonic bonding can be performed satisfactorily. Furthermore, by pressing the end of the adjacent covered portion 22 against the step 123 at the boundary between the joining plane 121 and the binding plane 132, the exposed core wire 21 extending from this end can be easily positioned with respect to the joining plane 121. You can also do that.

In addition, in this embodiment, the wire bundling portion 13 has an arc-shaped strip shape that extends along the arrangement of the through holes 131. With this configuration, since the wire bundling portion 13 has an arc-shaped strip shape, the contact area of the adjacent coated portion 22 in the wire bundling portion 13 is approximately constant regardless of the direction in which the coated wire 2 is oriented. Since the contact area of the adjacent coated portion 22 is approximately constant in this manner, the adjacent coated portion 22 can be bundled and fixed to the wire bundling portion 13 under approximately the same working conditions regardless of the orientation of the coated wire 2.

Further, in this embodiment, the metal plate 1a including the terminal portion 11 and the wire joining portion 12 has a semicircular strip shape at both ends, and the through hole 131 in the wire binding portion 13 is formed at the other end of the metal plate 1a. They are arranged in a semicircular shape along the edge 1a-4 of 1a-3. According to this configuration, the edge 1a-4 of the other end side 1a-3 of the metal plate 1a, that is, the edge 124 of the wire joint portion 12, has a semicircular shape, and the through hole 131 is formed along this edge 124. Arranged. Due to such an arrangement of the through holes 131, the contact area of the exposed core wire 21 on the bonding plane 121 of the wire bonding portion 12 remains approximately constant no matter which direction the covered wire 2 is oriented. By making the contact area of the exposed core wire 21 substantially constant in this way, the exposed core wire 21 can be joined to the joining plane 121 under substantially the same working conditions regardless of the orientation of the covered wire 2.

Further, in the present embodiment, the terminal portion 11 is provided with a connecting hole 111 that penetrates through the center of the arc shape of the edge 1a-2 of the one end side 1a-1 and connects to the other connecting portion. According to this configuration, depending on the shape of the mating connection part, etc., the mounting direction of the terminal fitting 1 by bolt fixing etc. through the connection hole 111 can be changed in the arc shape of the edge 1a-2 with the connection hole 111 as the center. Can be easily modified along.

Note that the embodiments described above merely show typical forms of the terminal fittings. The terminal fitting is not limited to this, and can be modified in various ways.

For example, in the embodiment described above, the battery terminal 4 attached to a battery of an automobile or the like is exemplified as an example of the mating connection portion to which the terminal fitting is attached. However, the mating connection portion of the terminal fitting is not limited to this, and its specific form is not critical.

Further, in the above-described embodiment, as an example of the terminal fitting, the terminal fitting 1 includes the terminal portion 11, the wire joining portion 12, and the wire binding portion 13, and is formed as an integral metal component by cutting or the like. Illustrated. However, the terminal fitting is not limited to this, and for example, a metal plate including a terminal part and a wire joint part and a wire binding part are formed as separate metal parts and joined together by welding or the like. It may be.

Moreover, in the embodiment described above, the wire binding portion 13 in which six through holes 131 for passing the binding band 3 are formed is illustrated as an example of the wire binding portion. However, the wire binding portion is not limited to this, and the number of through holes can be set to any number as long as it is three or more.

Further, in the embodiment described above, as an example of the wire joining portion, the wire joining portion 12 where the exposed core wires 21 are joined by ultrasonic bonding or the like is illustrated. However, the electric wire joining portion is not limited to this, and the exposed core wires may be joined by other joining methods such as soldering or the like.

Further, in the embodiment described above, as an example of the wire binding portion, the wire binding portion 13 having the binding plane 132 that is one step lower than the joining plane 121 is illustrated. However, the wire binding portion is not limited to this, and may have a binding plane that is flush with the joining plane, for example. However, by providing the binding plane 132 that is one step lower than the joining plane 121, it is possible to perform the joining operation of the exposed core wire 21 to the joining plane 121 well, and the positioning of the exposed core wire 21 with respect to the joining plane 121 can be easily performed. The things that can be done are as described above.

In the above-described embodiment, the wire bundling portion 13 having an arc-shaped band shape that follows the arrangement of the through holes 131 is exemplified as an example of the wire bundling portion. However, the shape of the wire bundling portion is not limited to this arc-shaped band shape, and may be, for example, a rectangular plate shape, and the specific shape is not important. However, as described above, with the wire bundling portion 13 having an arc-shaped band shape, the adjacent coated portion 22 can be bundled and fixed to the wire bundling portion 13 under approximately the same working conditions regardless of the orientation of the coated wire 2.

Further, in the above-described embodiment, as an example of a terminal fitting, the through holes 131 of the wire binding portion 13 are arranged in a semicircular shape along the edge 1a-4 of the semicircular metal plate 1a at both ends. 1 is illustrated. However, the terminal fitting is not limited to this, and the edge shape on the wire joining part side of the metal plate including the terminal part and the wire joining part may have any shape, and the arc arrangement of the through holes in the wire binding part The shape may be unrelated to the edge shape of the metal plate. However, by arranging the through holes 131 in a semicircular shape along the edge 1a-4 of the semicircular metal plate 1a at both ends, the exposed core wire can be used under substantially the same working conditions regardless of the orientation of the covered wire 2. 21 can be joined to the joining plane 121 as described above.

Further, in the above-described embodiment, as an example of the terminal portion, the terminal portion 11 is provided with a connection hole 111 for connecting to a mating connection portion at the center of the arc shape of the end edge 1a-2. However, the terminal portion is not limited to this, and the terminal portion may be connected to the other connecting portion in any manner other than the connection hole. However, as described above, by employing the terminal portion 11 provided with the connection hole 111, the mounting direction of the terminal fitting 1 can be easily changed when bolting or the like.

1 Terminal fitting 1a Metal plate 1a-1 One end side 1a-2, 1a-4, 112, 124 Edge 1a-3 Other end side 2 Covered wire 2a Sheath 3 Binding band 4 Battery terminal 11 Terminal portion 12 Wire joint portion 13 Wire Binding part 21 Exposed core wire 22 Adjacent covering part 41 Battery connection part 42 Bolt terminal 43 Load side connection part 44 Side wall rib 111 Connection hole 121 Joint plane 122, 133 Back surface 123 Step part 131 Through hole 132 Binding plane D11 Thickness direction t11, t12, t13 thickness

Claims (5)

A round terminal portion that is a part of the one end side of a band-shaped metal plate with an arcuate edge on the one end side and is connected to a mating connection portion;
an electric wire joining part that is a part of the metal plate on the other end side that is continuous with the terminal part, and one of the front and back planes is a joining plane to which an exposed core wire of a covered electric wire is joined;
A metal portion adjacent to the other end side edge of the metal plate and integrally provided with the wire joining portion, on which an adjacent covered portion adjacent to the exposed core wire of the covered wire is placed. , an electric wire binding part formed by having three or more through holes arranged in a convex arc shape on the side opposite to the electric wire joint part for passing through a binding band for binding and fixing the adjacent covered parts;
A terminal fitting characterized by being equipped with. The wire binding portion is a portion on which the adjacent sheathing portion is placed and bound and fixed, and is one step in the thickness direction of the metal plate from the joining plane of the wire joining portion in accordance with the thickness of the sheathing of the covered wire. 2. The terminal fitting according to claim 1, wherein a lowered binding plane is formed, and the through hole is formed opening in the binding plane. 2. The terminal fitting according to claim 1, wherein the wire binding portion has an arcuate strip shape extending along the arrangement of the three or more through holes. The metal plate has a semicircular shape at both ends, with an edge on the one end side having a semicircular shape, and an edge on the other end side having a convex semicircular shape on the opposite side from the edge on the one end side. It has a plate shape,
The terminal according to claim 1, wherein the wire binding portion is formed by three or more of the through holes arranged in a semicircular shape along the edge on the other end side. Metal fittings. 1. The terminal portion is characterized in that a connecting hole for connecting the other party connecting portion and the terminal portion is provided through the center of the arc shape of the edge on the one end side. Terminal fittings listed in .

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