JP2021190211A - Terminal conversion adapter - Google Patents

Abstract

To suppress an increase in work and cost burden even when a connection destination of a harness is changed.SOLUTION: A terminal conversion adapter 1 includes a main body 10 having a terminal accommodating portion 12 that has insulating properties and accommodates a round crimp terminal 2b so as to insert and remove the round crimp terminal 2b, a connection terminal 20 protruding from the main body 10, and a conduction portion 30 that conducts the round crimp terminal 2b inserted in the main body 10 and the connection terminal 20, and the conductive portion 30 includes an elastic holding portion 31 that elastically holds the round crimp terminal 2b in the terminal accommodating portion 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a terminal conversion adapter.

The wire harness used for power supply is generally provided with a crimp terminal at the tip of the harness so that a stable electrical connection can be made with the electrode to be connected or an electric device. The crimp terminal is typically a round terminal (R terminal, LA terminal) made of an annular thin plate metal part having a screw hole formed in the center, and also a Y-type terminal with an open tip (open tip shape). It is widely used, and dimensions such as its screw diameter are defined by the standard.

By the way, the above-mentioned crimp terminal provided at the tip of the harness is changed to a Y-type terminal when it is desired to select either a round terminal or a Y-type terminal at the time of connection, or when the situation changes after using it as a round terminal. You may want to. As a means for dealing with such a situation, for example, in Patent Document 1, by providing two grooves from the screw hole of the round terminal to the tip, the tip of the round terminal is cut and deformed into an open shape. Possible crimp terminals are disclosed.

Japanese Unexamined Patent Publication No. 9-259962

However, in a situation where it is necessary to change the connection destination of the harness, if the screw diameter is different before and after changing the connection destination, or if the connection destination to be changed is a standard other than the round terminal and the Y-type terminal, the above It cannot be dealt with by the conventional technology of. Therefore, in these cases where the connection destination is changed, it is necessary to replace the terminal to modify the crimp terminal or replace the entire harness, which greatly burdens the work and cost associated with the change of the connection destination. There is a risk of an increase.

The present invention has been made in view of such a situation, and an object of the present invention is to suppress an increase in work and cost burden even when the connection destination of the harness is changed. The purpose is to provide a terminal conversion adapter that can be used.

<First aspect of the present invention>
The first aspect of the present invention is a main body having an insulating property and having a terminal accommodating portion for accommodating a round crimp terminal so as to be removable, a connection terminal protruding from the main body, and being inserted into the main body. A terminal conversion adapter comprising a conductive portion that conducts the round crimp terminal and the connection terminal, the conductive portion including an elastic holding portion that elastically holds the round crimp terminal in the terminal accommodating portion. Is.

In the terminal conversion adapter according to the first aspect of the present invention, by inserting the round crimp terminal provided in the existing harness into the terminal accommodating portion, for example, the connection terminal formed as a crimp terminal of an arbitrary standard is a conductive portion. It is electrically connected to the round crimp terminal via. At this time, the round crimp terminal is elastically held by the elastic holding portion in the terminal accommodating portion. As a result, the existing harness can be easily converted to the standard of the connection terminal simply by attaching the terminal conversion adapter to the round crimp terminal at the tip, and can be adapted to the connection destination without modification or replacement. .. Therefore, according to the terminal conversion adapter according to the first aspect of the present invention, it is possible to suppress an increase in burden in terms of work and cost even when the connection destination of the harness is changed.

<Second aspect of the present invention>
A second aspect of the present invention is, in the first aspect of the present invention described above, the elastic holding portion is a pair of leaf springs that sandwich the outer peripheral side surface by a curved shape along the outer peripheral side surface of the round crimp terminal. It is a terminal conversion adapter composed of parts.

According to the terminal conversion adapter according to the second aspect of the present invention, the thickness of the terminal conversion adapter can be suppressed by the elastic holding portion holding the round crimp terminal on the outer peripheral side surface. At this time, the elastic holding portion composed of the pair of leaf spring portions is formed in a curved shape along the outer peripheral side surface of the round terminal, so that the round terminal can be stably held.

<Third aspect of the present invention>
A third aspect of the present invention is, in the second aspect of the present invention described above, the elastic holding portion is a terminal conversion adapter in which the tips of the pair of leaf spring portions are curved in a direction away from each other. ..

According to the terminal conversion adapter according to the third aspect of the present invention, when the round crimp terminal is inserted into the terminal accommodating portion, the tips of the pair of leaf spring portions serve as guides to hold the round crimp terminal in a predetermined manner. Since it can be guided to the position, it is possible to easily insert the round crimp terminal into the terminal accommodating portion.

<Fourth aspect of the present invention>
A fourth aspect of the present invention is, in any one of the first to third aspects of the present invention described above, the main body abuts on the tip of the round crimp terminal inserted into the terminal accommodating portion. It is a terminal conversion adapter provided with a stopper that defines the insertion position of the round crimp terminal.

According to the terminal conversion adapter according to the fourth aspect of the present invention, the stopper provided in the terminal accommodating portion can prevent excessive insertion of the round crimp terminal inside the main body, so that the round shape can be more reliably formed. The crimp terminal can be held in a predetermined holding position.

<Fifth aspect of the present invention>
A fifth aspect of the present invention is, in the fourth aspect of the present invention described above, the stopper is a terminal conversion adapter which is a protrusion of the main body protruding from the terminal accommodating portion.

According to the terminal conversion adapter according to the fifth aspect of the present invention, a stopper that defines the insertion position of the round crimp terminal is formed as a part of the main body, and is formed as a protrusion having a particularly simple shape. , The stopper can be easily provided without using a separate member.

<Sixth Embodiment of the present invention>
A sixth aspect of the present invention is, in the fourth or fifth aspect of the present invention described above, the conduction portion is restricted from being displaced with respect to the main body by providing an engaging portion that engages with the stopper. It is a terminal conversion adapter.

According to the terminal conversion adapter according to the sixth aspect of the present invention, the relative displacement between the main body and the conductive portion is increased by providing the engaging portion that engages with the stopper of the main body in the conductive portion as a member separate from the main body. It can function as a regulating positioning mechanism.

<7th aspect of the present invention>
A seventh aspect of the present invention is, in any one of the first to sixth aspects of the present invention described above, the conductive portion is attached to the flat surface of the round crimp terminal inserted into the terminal accommodating portion. It is a terminal conversion adapter in which a leaf spring structure is formed.

According to the terminal conversion adapter according to the seventh aspect of the present invention, the round crimp terminal inserted into the terminal accommodating portion is pressed by the urging force of the conductive portion on which the leaf spring structure is formed, whereby the conductive portion is formed. It is possible to maintain a good electrical connection with.

<Eighth aspect of the present invention>
Eighth aspect of the present invention is, in any one of the first to seventh aspects of the present invention described above, the connection terminal and the conduction portion are terminal conversion adapters made of a single sheet metal.

According to the terminal conversion adapter according to the eighth aspect of the present invention, the connection terminal formed according to the standard of the conversion destination and the conductive portion that electrically conducts while holding the round crimp terminal are continuous. By processing a single sheet metal and forming it integrally, it is possible to reduce the manufacturing cost due to the reduction in the number of parts.

<Ninth aspect of the present invention>
A ninth aspect of the present invention is, in any one of the first to seventh aspects of the present invention described above, the connection terminal is a terminal conversion adapter which is a plurality of branch terminals having different connection destinations.

According to the terminal conversion adapter according to the ninth aspect of the present invention, by using a plurality of branch terminals as connection terminals, the number of harness connection destinations can be increased without increasing the burden on work and cost. Can be done.

<10th aspect of the present invention>
A tenth aspect of the present invention is, in the ninth aspect of the present invention described above, the plurality of branch terminals are terminal conversion adapters extending from the conductive portion via flexible wiring.

According to the terminal conversion adapter according to the tenth aspect of the present invention, each branch terminal can be connected to each connection destination by flexible wiring regardless of the combination of distances and positions of a plurality of connection destinations. You can connect.

According to the present invention, it is possible to provide a terminal conversion adapter capable of suppressing an increase in burden in terms of work and cost even when the connection destination of the harness is changed.

It is a perspective view of the terminal conversion adapter which concerns on 1st Embodiment. It is a figure which shows typically the connection form of a terminal conversion adapter and an existing harness. It is sectional drawing which shows the internal shape of a main body. It is a three-sided view which shows the detailed structure of a metal part including a connection terminal. It is a schematic diagram which shows the state inside the main body before and after the round crimp terminal is inserted into a terminal conversion adapter. It is sectional drawing which shows the cross section in the XZ plane of the terminal conversion adapter which concerns on 2nd Embodiment. It is sectional drawing which shows the cross section in the XZ plane of the terminal conversion adapter which concerns on 3rd Embodiment. It is a block diagram which shows transparently the structure of the terminal conversion adapter which concerns on 4th Embodiment.

Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. The invention is not limited to the contents described below, and the invention can be arbitrarily modified and implemented without changing the gist thereof. In addition, the drawings used for explaining the embodiments are all schematically showing the constituent members, and are partially emphasized, enlarged, reduced, or omitted in order to deepen the understanding of the constituent members. It may not accurately represent the scale or shape.

<First Embodiment>
FIG. 1 is a perspective view of the terminal conversion adapter 1 according to the first embodiment. The terminal conversion adapter 1 includes a main body 10, a connection terminal 20, and a conduction portion 30 (not shown in FIG. 1) provided inside the main body 10. The terminal conversion adapter 1 is a conversion adapter for converting into terminals having different standards by being connected to an existing wire harness provided with a round crimp terminal.

The main body 10 is made of an insulating material such as resin, and is configured as a rectangular parallelepiped housing in the present embodiment.

The connection terminal 20 is a metal terminal provided so as to protrude from the main body 10, and in the present embodiment, a so-called round terminal of an annular thin plate is formed. More specifically, in the connection terminal 20 according to the present embodiment, a screw hole 20b having a diameter of 4 mm is formed in the center of the flat terminal surface 20a, and electrical connection is made to the connection destination electrode or electrical equipment by screwing. It is configured to be possible. However, the diameter of the screw hole 20b of the connection terminal 20 is not limited to this, and is not limited to the round terminal. That is, the connection terminal 20 may be a Y-shaped terminal having an open tip, and various terminal shapes such as a flat connection terminal, which is also a kind of crimp terminal, can be adopted.

Here, in the three-dimensional space of each figure, the directions orthogonal to each other are represented by the symbols X, Y, and Z, and the direction in which the connection terminal 20 protrudes from the main body 10 is defined as the X direction, and the terminals of the connection terminal 20 are defined. The Y direction is defined so that the surface 20a constitutes the XY plane, and the direction perpendicular to the XY plane is defined as the Z direction.

FIG. 2 is a diagram schematically showing a connection form between the terminal conversion adapter 1 and the existing harness 2. The existing harness 2 is provided with a round crimp terminal 2b having a screw hole of, for example, φ3 mm formed on one end side of the wiring portion 2a, and the other end side (not shown) is connected to another device such as a power supply device. It extends from the inside of other equipment. The terminal conversion adapter 1 has an opening 11 formed on the surface of the main body 10 opposite to the direction in which the connection terminal 20 protrudes so that the round crimp terminal 2b of the existing harness 2 can be inserted and removed. There is. As a result, the existing harness 2 can convert the terminal on one end side into the connection terminal 20 by inserting the round crimp terminal 2b into the opening 11 of the terminal conversion adapter 1.

Subsequently, the internal structure of the main body 10 will be described more specifically. FIG. 3 is a cross-sectional perspective view showing the internal shape of the main body 10. More specifically, FIG. 3 is a cross-sectional perspective view when the main body 10 is cut along a plane parallel to the XY plane at the height of the upper surface of the connection terminal 20.

The main body 10 is formed inside with a terminal accommodating portion 12 capable of accommodating a round crimp terminal 2b inserted from the opening 11 together with a metal component including a connection terminal 20. Further, the main body 10 is provided with a protrusion 13 protruding from the space of the terminal accommodating portion 12 on the inner bottom surface. Then, on the inner bottom surface of the main body 10, metal parts including the connection terminal 20 are arranged.

FIG. 4 is a three-view view showing the detailed structure of the metal component including the connection terminal 20. More specifically, FIG. 4 is a plan view when the connection terminal 20 is viewed in a XY plane, a YZ plane, and a ZX plane, respectively, and the positions of the main body 10 and the terminal accommodating portion 12 are shown by broken lines and chain lines, respectively. Represents.

The connection terminal 20 and the conductive portion 30 in the present embodiment are composed of a continuous piece of sheet metal, and the round crimp terminal 2b inserted into the main body 10 is in contact with the flat plate portion of the conductive portion 30 to be round. The shape crimp terminal 2b and the connection terminal 20 are conductive.

Further, the conductive portion 30 includes an elastic holding portion 31 that elastically holds the round crimp terminal 2b housed in the terminal accommodating portion 12. The elastic holding portion 31 in the present embodiment is formed by bending strip-shaped portions provided on both sides of the conductive portion 30 in the Y direction perpendicularly to the XY plane, and is configured as a pair of leaf spring portions extending from the conductive portion 30. Has been done. The elastic holding portion 31 has a curved shape along the outer peripheral side surface of the round terminal, so that the round crimp terminal 2b accommodated in the terminal accommodating portion 12 is sandwiched from both sides in the Y direction. Here, the elastic holding portion 31 functions as a guide when the round crimp terminal 2b is inserted because the tips of the pair of leaf spring portions are curved in a direction (Y direction) away from each other.

Further, the conductive portion 30 is formed with an engaging portion 32 that engages with the above-mentioned protrusion 13 protruding into the space of the terminal accommodating portion 12. In the present embodiment, the engaging portion 32 is a through hole provided in the conductive portion 30 made of sheet metal, and is formed so that the cross-sectional shape in the XY plane is the same as the contour of the protrusion 13. As a result, the engaging portion 32 functions as a positioning mechanism that regulates the relative displacement between the main body 10 and the conductive portion 30.

FIG. 5 is a schematic view showing a state inside the main body 10 before and after the round crimp terminal 2b is inserted into the terminal conversion adapter 1. By inserting the round crimp terminal 2b of the existing harness 2 into the opening 11 provided in the main body 10, the elastic holding portion 31 as a pair of leaf springs is expanded in the Y direction, and the protrusion as a stopper. It is inserted into the terminal accommodating portion 12 until it comes into contact with 13.

At this time, the protrusion 13 abuts on the tip of the round crimp terminal 2b inserted into the terminal accommodating portion 12 to prevent excessive insertion and functions as a stopper that defines the insertion position of the round crimp terminal 2b. ..

As a result, the round crimp terminal 2b is accommodated in a predetermined position defined by the protrusion 13 and the elastic holding portion 31, and is intended from the terminal conversion adapter 1 with a holding force corresponding to the elastic force of the elastic holding portion 31. It is possible to reduce the risk of slipping out without fail. Then, in the existing harness 2, the round crimp terminal 2b conducts with the connection terminal 20 via the conduction portion 30, so that electrical continuity can be achieved with the connection destination of the connection terminal 20.

That is, even if the standard of the connection destination is changed from the round crimp terminal 2b, the existing harness 2 is crimped by using the terminal conversion adapter 1 provided with the connection terminal 20 conforming to the standard of the connection destination. It is possible to connect to the changed connection destination without performing the terminal replacement work for modifying the terminal and the replacement work of the entire harness.

Therefore, the terminal conversion adapter 1 can suppress an increase in work and cost burden even when the connection destination of the harness is changed.

<Second Embodiment>
Subsequently, the terminal conversion adapter 3 according to the second embodiment will be described. In the terminal conversion adapter 3 according to the second embodiment, the shape of the conductive portion 30 in the terminal conversion adapter 1 of the first embodiment described above is different from that of the first embodiment. Hereinafter, the parts different from those of the first embodiment will be described, and the components common to the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 6 is a cross-sectional view showing a cross section parallel to the XZ plane of the terminal conversion adapter 3 according to the second embodiment. More specifically, FIG. 6 is a cross-sectional view showing a cross section when the terminal conversion adapter 3 is cut so as to pass through the protrusion 13 of the main body 10.

The terminal conversion adapter 3 has a warped portion in which a part of the conductive portion 30 is slightly separated from the inner bottom surface of the terminal accommodating portion 12 so as to project to a predetermined position of the round crimp terminal 2b inserted into the terminal accommodating portion 12. 30a is formed. That is, the conductive portion 30 arranged on the inner bottom surface of the main body 10 has a leaf spring structure that is urged against the flat surface of the round crimp terminal 2b inserted into the terminal accommodating portion 12.

As a result, when the round crimp terminal 2b is inserted at a predetermined position of the terminal accommodating portion 12, the electrical connection state with the conductive portion 30 is well maintained at the warped portion 30a. The warped portion 30a is not limited to the shape shown in FIG. 6, but it is preferable that the warped portion 30a has a shape that maximizes the contact area of the round crimp terminal 2b with the flat surface.

<Third Embodiment>
Subsequently, the terminal conversion adapter 3 according to the third embodiment will be described. The terminal conversion adapter 4 according to the third embodiment has a different internal shape of the main body 10 of the terminal conversion adapter 1 of the first embodiment described above from that of the first embodiment. Hereinafter, the parts different from those of the first embodiment will be described, and the components common to the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 7 is a cross-sectional view showing a cross section parallel to the XZ plane of the terminal conversion adapter 4 according to the third embodiment. More specifically, FIG. 7 is a cross-sectional view showing a cross section when the terminal conversion adapter 4 is cut so as to pass through the protrusion 13 of the main body 10.

The terminal conversion adapter 4 is provided with a narrowed portion 14 on the surface of the main body 10 facing the inner bottom surface so as to project at a predetermined position of the round crimp terminal 2b inserted into the terminal accommodating portion 12. As a result, the flat surface of the round crimp terminal 2b inserted into the terminal accommodating portion 12 is pressed against the conductive portion 30 by the narrowed portion 14, and the electrical connection state with the conductive portion 30 is well maintained. The narrowed portion 14 is not limited to the shape shown in FIG. 7, but it is preferable that the narrowed portion 14 has a shape in which the round crimp terminal 2b and the conductive portion 30 are in surface contact with each other.

<Fourth Embodiment>
Subsequently, the terminal conversion adapter 5 according to the fourth embodiment will be described. The terminal conversion adapter 5 according to the fourth embodiment is different from the first embodiment in the configuration and connection form of the connection terminal 20 in the terminal conversion adapter 1 of the first embodiment described above. Hereinafter, the parts different from those of the first embodiment will be described, and the components common to the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 8 is a configuration diagram transparently showing the configuration of the terminal conversion adapter 5 according to the fourth embodiment. In the terminal conversion adapter 5, the connection terminal 40 is composed of a plurality of branch terminals 41, 42, and 43, and each terminal is configured to be connected to a different connection destination. Therefore, the terminal conversion adapter 5 can branch the connection destination of the round crimp terminal 2b inserted in the terminal accommodating portion 12 to the respective branch destinations of the plurality of branch terminals 41, 42, and 43.

More specifically, the branch terminal 41 in the present embodiment is provided with a round terminal 41b and a round terminal 41c in which screw holes of φ3 mm are formed at both ends of the flexible wiring 41a, respectively. Here, inside the main body 10, a columnar column 15 protruding from the inner bottom surface is formed so as to penetrate the conductive portion 30. Then, a screw hole of the round terminal 41c provided at one end of the branch terminal 41 is provided so as to fit into the support column 15 and is fixed to the inside of the main body 10. In this embodiment, since the shape of the branch terminal 42 and the branch terminal 43 and the connection form with the conductive portion 30 are the same as those of the branch terminal 41, the description thereof will be omitted here.

Since each of the branch terminals 41, 42, and 43 in the present embodiment can use a harness with a crimp terminal as an off-the-shelf product, the manufacturing cost of the terminal conversion adapter 5 can be suppressed.

Further, the connection terminal 40 may have only two or more branches, and the diameter of the screw hole of each branch terminal is not limited to φ3 mm. Further, each branch terminal is not limited to the round terminal, and may be a Y-shaped terminal having an open tip shape, and various terminal shapes such as a flat connection terminal can be adopted. Further, each branch terminal may be a crimp terminal having different standards. The connection terminal 40 is not limited to the form shown in FIG. 8, and the connection terminal 40 may be connected to the conduction portion 30 by soldering, for example, by adopting a lug terminal instead of the crimp terminal. good.

1, 3-5 Terminal conversion adapter 2 Existing harness 2b Round crimp terminal 10 Main body 11 Opening 12 Terminal accommodating 13 Protrusions 20, 40 Connection terminals 30 Conduction 31 Elastic holding 32 Engagement

Claims (10)

A main body that has insulating properties and has a terminal accommodating part that accommodates round crimp terminals so that they can be inserted and removed.
The connection terminal protruding from the main body and
A conductive portion for conducting the round crimp terminal inserted into the main body and the connection terminal is provided.
The conduction portion is a terminal conversion adapter including an elastic holding portion that elastically holds the round crimp terminal in the terminal accommodating portion. The terminal conversion adapter according to claim 1, wherein the elastic holding portion is composed of a pair of leaf spring portions that sandwich the outer peripheral side surface by a curved shape along the outer peripheral side surface of the round crimp terminal. The terminal conversion adapter according to claim 2, wherein the elastic holding portion is curved in a direction in which the tips of the pair of leaf spring portions are curved in a direction in which the tips thereof are separated from each other. Any one of claims 1 to 3, wherein the main body is provided with a stopper that comes into contact with the tip of the round crimp terminal inserted into the terminal accommodating portion and defines the insertion position of the round crimp terminal. Terminal conversion adapter described in. The terminal conversion adapter according to claim 4, wherein the stopper is a protrusion of the main body protruding from the terminal accommodating portion. The terminal conversion adapter according to claim 4 or 5, wherein the conduction portion is provided with an engaging portion that engages with the stopper to regulate displacement with respect to the main body. The terminal conversion according to any one of claims 1 to 6, wherein the conductive portion has a leaf spring structure urged against a flat surface of the round crimp terminal inserted into the terminal accommodating portion. adapter. The terminal conversion adapter according to any one of claims 1 to 7, wherein the connection terminal and the conduction portion are made of a single sheet metal. The terminal conversion adapter according to any one of claims 1 to 7, wherein the connection terminal is a plurality of branch terminals having different connection destinations. The terminal conversion adapter according to claim 9, wherein the plurality of branch terminals extend from the conductive portion via a flexible wiring.

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