Connection structure of terminal

Abstract

To provide a connection structure of a terminal, capable of improving a conductive performance by increasing the number of contact points between terminals and a contact area.SOLUTION: A connection structure 1 of a terminal, comprises: a first terminal 11; and a second terminal 21 to which the first terminal 11 is fitted to a fitting direction X. The first terminal 11 is constructed by including: a pair of first conductive bodies 12A and 12B into which a rectangular flat plate is laminated; and a first insertion space 13 that is formed to between the first conductive bodies 12A and 12B. The second terminal 21 is constructed by including: a second conductive body 22 which is inserted into the first insertion space 13 in a fitting state; a pair of third conductive bodies 23A and 23B that is laminated to both sides of a lamination direction Z while nipping the second conductive body 22; and a pair of second insertion spaces 24A and 24B into which each of the first conductive bodies 12A and 12B is inserted in the fitting state. The second conductive body 22 includes a second contact surface 25 that is contacted to a first contact surface 32 of the first conductive bodies 12A and 12B in the fitting state. Each of the third conductive bodies 23A and 23B includes a third contact surface 42 that contacts to the first contact surface 32 in the fitting state.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a terminal connection structure. [Background technology]

[0002] Conventionally, a terminal connection structure is composed of a male terminal and a female terminal (for example, see Patent Document 1). In such a terminal connection structure, when the tab portion of the male terminal is inserted into the box portion (housing) of the female terminal, the contact of the elastic piece formed inside the box portion comes into contact with the contact formed on the upper contact portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-77546 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional terminal connection structure, the number and contact area of ​​the contact points between the male and female terminals are small, making it unsuitable for large currents, and there is room for improvement in terms of improving the conductivity between the terminals.

[0005] An object of the present invention is to provide a terminal connection structure capable of increasing the number of contact points and the contact area between the terminals to improve conductivity. [Means for solving the problem]

[0006] In order to achieve the above object, a terminal connection structure according to the present invention includes a first terminal and a second terminal into which the first terminal is fitted in a fitting direction, the first terminal including a pair of first conductors formed in a rectangular flat plate shape and stacked in a stacking direction perpendicular to the fitting direction, a first insertion space formed between the pair of first conductors, and first contact surfaces provided on both sides of each of the first conductors in the stacking direction, each of which comes into contact with the second terminal in a fitted state in which the first terminal is fitted to the second terminal, and the second terminal is formed in a rectangular flat plate shape and inserted into the first insertion space in the fitted state. The connector is characterized in that it comprises a conductor, a pair of third conductors stacked on both sides of the second conductor in the stacking direction, a pair of second insertion spaces formed respectively between the second conductor and each of the third conductors, into which each of the first conductors is inserted in the fitted state, second contact surfaces provided on both sides of the second conductor in the stacking direction, each of which contacts the first contact surface of the first conductor in the fitted state, and third contact surfaces provided on the surfaces of each of the third conductors facing the first conductor in the stacking direction, each of which contacts the first contact surface of the first conductor in the fitted state. Effect of the Invention

[0007] Advantageous Effects of Invention According to the terminal connection structure of the present invention, the number of contact points and the contact area between the terminals are increased, thereby improving the electrical conductivity. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a schematic configuration of a terminal connection structure according to an embodiment. [Diagram 2] FIG. 2 is a plan view showing a schematic configuration of a first terminal according to the embodiment. [Diagram 3] FIG. 3 is a plan view showing a schematic configuration of a second terminal according to the embodiment. [Figure 4] FIG. 4 is a plan view showing a schematic configuration of a terminal connection structure according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiments. In other words, the components in the following embodiments include those that a person skilled in the art can easily imagine or that are substantially the same, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention.

[0010] 1, a terminal connection structure 1 according to this embodiment is composed of a first terminal 11 and a second terminal 21. The first terminal 11 and the second terminal 21 are each a terminal fitting made of a conductive metal material.

[0011] In the following description, for convenience, among the X, Y, and Z directions shown in Figs. 1 to 4, the X direction is defined as the "fitting direction X", the Y direction is defined as the "width direction Y", and the Z direction is defined as the "stacking direction Z". The fitting direction X, the width direction Y, and the stacking direction Z are mutually perpendicular. The fitting direction X corresponds to the insertion / removal direction of the first terminal 11 and the second terminal 21. Among the fitting directions X, the X1 direction is defined as the "insertion direction X1", and the X2 direction is defined as the "removal direction X2". The width direction Y corresponds to the width direction of each terminal including the first terminal 11 and the second terminal 21. The stacking direction Z corresponds to the thickness direction of each terminal including the first terminal 11 and the second terminal 21. Unless otherwise specified, each direction used in the following description will be described as a direction in a state in which the first terminal 11 and the second terminal 21 are assembled to each other.

[0012] The first terminal 11 is classified as a so-called male terminal, and is housed and held, for example, in a resin male connector (not shown). The second terminal 21 is classified as a so-called female terminal, and is housed and held, for example, in a resin female connector (not shown). The first terminal 11 and the second terminal 21 held therein are fitted together by fitting the male connector and the female connector to each other. As shown in Figures 2 and 3, the cross-sectional shapes of the first terminal 11 and the second terminal 21 in the width direction Y are formed symmetrically (line-symmetrically) in the stacking direction Z with respect to a virtual line O along the fitting direction X as an axis of symmetry.

[0013] First, the first terminal 11 will be described with reference to Figures 1, 2 and 4. The first terminal 11 includes a pair of first conductors 12A, 12B, a first insertion space 13, and an electric wire connection portion 15.

[0014] The pair of first conductors 12A, 12B are formed in a rectangular flat plate shape and are stacked in the stacking direction Z. The first conductors 12A, 12B are each molded from a metal material such as copper, copper alloy, aluminum, or aluminum alloy. As shown in FIG. 1, the first conductors 12A, 12B are processed by folding back a single flat plate at a bent portion 16 and stacking them, but the present invention is not limited to this. The pair of first conductors 12A, 12B are formed such that the cross-sectional shape in the width direction Y is symmetrical (line symmetrical) in the stacking direction Z with the imaginary line O as the axis of symmetry. The pair of first conductors 12A, 12B each have a first conductor bent portion 31 that is bent so as to protrude toward the side away from each other in the stacking direction Z and is folded back. A first insertion space 13 is formed in the stacking direction Z between the pair of first conductor bent portions 31, 31.

[0015] The first conductor bent portions 31 are formed at the end portions of the first conductors 12A, 12B on the insertion direction X1 side, and come into contact with the second terminal 21 in a fitted state in which the first terminal 11 is fitted into the second terminal 21. The pair of first conductor bent portions 31, 31 are formed to face each other in the stacking direction Z and spaced apart in the stacking direction Z across the first insertion space 13. Each first conductor bent portion 31 is formed so that its cross-sectional shape in the width direction Y is concave from one side to the other in the stacking direction Z (or convex from one side to the other).

[0016] Each of the first conductor bends 31, 31 has a first contact surface 32, a first contact 33, a second contact 34 and a third contact 35.

[0017] The first contact surfaces 32 are provided on both sides of each of the first conductors 12A, 12B in the stacking direction Z, and come into contact with the second terminal 21 in a fitted state in which the first terminal 11 is fitted into the second terminal 21. In other words, the first contact surfaces 32 are provided on both sides of the first conductor bent portion 31, and are surfaces that come into contact with the second terminal 21 in the fitted state. The first contact surface 32 is composed of a first contact surface outer side 32a facing the external space side opposite the first insertion space 13, and a first contact surface inner side 32b facing the first insertion space 13 side.

[0018] As shown in Fig. 4, the first contact 33 is formed as a bending point protruding toward the side away from each other in the stacking direction Z, and is a contact point where the first contact surface 32 of the first conductors 12A, 12B and the third contact surface 42 of the third conductors 23A, 23B come into contact with each other. The first contact 33 is formed on the first contact surface outer side 32a. When the first terminal 11 is viewed from the width direction Y, the first contact 33 is the portion that protrudes most outward. The first contact 33 comes into contact with the third contact surface 42 of each of the third conductors 23A, 23B.

[0019] 4, the second contact 34 is formed as a bending point located closer to the base end 31a than the first contact 33 in the fitting direction X, and is a contact point where the first contact surfaces 32 of the first conductors 12A, 12B and the second contact surface 25 of the second conductor 22 come into contact with each other. The second contact 34 is formed on the first contact surface inner side 32b. When the first terminal 11 is viewed from the width direction Y, the second contact 34 is the part located on the innermost side.

[0020] 4, the third contact 35 is formed at a position closer to the tip side than the first contact 3 in the fitting direction X, and is a contact point where the first contact surfaces 32 of the first conductors 12A and 12B come into contact with the second contact surface 25 of the second conductor 22. The third contact 35 is formed on the first contact surface inner side 32b.

[0021] The first insertion space 13 is a space formed between the pair of first conductors 12A, 12B. As shown in Fig. 4, the first insertion space 13 is formed between the pair of first conductor bent portions 31, 31, and the tip of the second conductor 22 is inserted into the first insertion space 13 in a fitted state in which the first terminal 11 is fitted into the second terminal 21.

[0022] The electric wire connection portion 15 is a portion that is electrically connected to a conductor portion of an electric wire (not shown) in the first terminal 11. The electric wire connection portion 15 is connected to the conductor portion of the electric wire by crimping, laser welding, soldering, or the like.

[0023] Next, the second terminal 21 will be described with reference to Figures 1, 3 and 4. The first terminal 11 fits into the second terminal 21 in the fitting direction X. The second terminal 21 includes a second conductor 22, a pair of third conductors 23A, 23B, a pair of second insertion spaces 24A, 24B, a second contact surface 25, a third contact surface 42 and an electric wire connection portion 27.

[0024] The second conductor 22 is formed in a rectangular plate shape, and is inserted into the first insertion space 13 in a fitted state in which the first terminal 11 is fitted into the second terminal 21. The second conductor 22 is molded from a metal material such as copper, a copper alloy, aluminum, or an aluminum alloy. The second conductor 22 is formed to extend along the fitting direction X, and second contact surfaces 25 are provided on both sides of the second conductor 22 in the stacking direction Z. The tip of the second conductor 22 on the removal direction X2 side is so-called chamfered. As shown in FIG. 4, the tip of the second conductor 22 inserted into the first insertion space 13 in the fitted state contacts the second contact 34 and the third contact 35.

[0025] The pair of third conductors 23A, 23B are formed in a rectangular flat plate shape and are stacked on both sides of the second conductor 22 in the stacking direction Z. The pair of third conductors 23A, 23B are each molded from a metal material such as copper, copper alloy, aluminum, or aluminum alloy. As shown in FIG. 1, the third conductors 23A, 23B are processed by folding back a single flat plate at a bending portion 17, but are not limited to this. The pair of third conductors 23A, 23B are formed such that their cross-sectional shapes in the width direction Y are symmetrical (line-symmetrical) in the stacking direction Z with the virtual line O as the axis of symmetry. The pair of third conductors 23A, 23B each have a third conductor bending portion 41 that is bent so as to protrude toward a side away from the second conductor 22 in the stacking direction Z and is folded back. In a fitted state in which the first terminal 11 is fitted into the second terminal 21, the pair of third conductors 23A, 23B sandwich and cover the first conductor bent portion 31 in the stacking direction Z, and come into contact with the first contact 33.

[0026] The third conductor bent portions 41 are formed at the ends of the third conductors 23A, 23B on the removal direction X2 side, and contact the first terminal 11 in a fitted state in which the first terminal 11 is fitted into the second terminal 21. The pair of third conductor bent portions 41, 41 face each other in the stacking direction Z, and are formed spaced apart in the stacking direction Z via the second insertion spaces 24A, 24B and the second conductor 22. The cross-sectional shape of each third conductor bent portion 41 in the width direction Y is formed in a concave shape recessed from one side to the other in the stacking direction Z (or a convex shape protruding from one side to the other). The pair of third conductor bent portions 41, 41 face each other in the stacking direction Z. The third conductor bent portion 41 on the third conductor 23A side faces the second conductor 22 in the stacking direction Z, and is formed spaced apart in the stacking direction Z via the second insertion space 24A. The third conductor bent portion 41 on the third conductor 23B side faces the second conductor 22 in the stacking direction Z and is formed to be spaced apart in the stacking direction Z via the second insertion space 24B. The pair of third conductor bent portions 41 are formed such that their tips on the removal direction X2 side extend further in the removal direction X2 than the tips of the second conductor 22 on the removal direction X2 side.

[0027] The pair of second insertion spaces 24A, 24B are formed between the second conductor 22 and each of the third conductors 23A, 23B, and each of the first conductors 12A, 12B is inserted into the pair of second insertion spaces 24A, 24B, respectively, in a fitted state in which the first terminal 11 is fitted into the second terminal 21. The pair of second insertion spaces 24A, 24B are formed between each of the third conductor bend portions 41 of the pair of third conductors 23A, 23B and the second conductor 22, and each of the first conductor bend portions 31 of the first conductors 12A, 12B is inserted into the pair of second insertion spaces 24A, 24B, respectively, in the above-mentioned fitted state.

[0028] A height L1 in the stacking direction Z of each of the second insertion spaces 24A, 24B shown in Fig. 3 is higher than a height L2 in the stacking direction Z of the first conductor bent portion 31 shown in Fig. 2. In other words, the first conductor bent portion 31 is formed so as to expand each of the second insertion spaces 24A, 24B in the stacking direction Z in the fitted state.

[0029] The second contact surfaces 25 are provided on both sides of the second conductor 22 in the stacking direction Z, and are surfaces that come into contact with the first contact surfaces 32 of the first conductors 12A, 12B in a fitted state in which the first terminal 11 is fitted into the second terminal 21. The second contact surfaces 25 are provided at the end of the second conductor 22 on the removal direction X2 side, and are portions exposed to the outside from the pair of third conductors 23A, 23B.

[0030] The third contact surface 42 is provided on a surface of each of the third conductors 23A and 23B facing the first conductors 12A and 12B in the stacking direction Z, and is a surface that contacts the first contact surface 32 of the first conductors 12A and 12B in a fitted state in which the first terminal 11 is fitted to the second terminal 21. The third contact surface 42 is formed to match the cross-sectional shape of the third conductor bent portion 41 in the width direction Y, and has an opposing surface 42a that faces the first contact surface outer side 32a in the fitting direction X in the above-mentioned fitted state. When the first terminal 11 is removed from the second terminal 21, the opposing surface 42a abuts against a part of the first contact surface outer side 32a of the first conductor bent portion 31 in the fitting direction X. The opposing surface 42a abuts against the first contact surface outer side 32a, making it difficult for the first terminal 11 to be easily removed from the second terminal 21 in the removal direction X2.

[0031] The electric wire connection portion 27 is a portion that is electrically connected to a conductor portion of an electric wire (not shown) in the second terminal 21. The electric wire connection portion 27 is connected to the conductor portion of the electric wire by crimping, laser welding, soldering, or the like.

[0032] When the second conductor 22 is inserted into the first insertion space 13 in a fitted state in which the first terminal 11 is fitted into the second terminal 21, the pair of first conductor bent portions 31, 31 are each pressed outward in the stacking direction Z. At this time, the first conductor bent portions 31, 31 and the second conductor 22 come into contact with each other at second contacts 34 and third contacts 35.

[0033] When the first conductor bent portions 31 are inserted into the second insertion spaces 24A and 24B in a fitted state in which the first terminal 11 is fitted into the second terminal 21, the pair of third conductor bent portions 31 are each pressed outward in the stacking direction Z. At this time, the first conductor bent portions 31 and the third conductor bent portion 41 come into contact with each other at the first contact points 33.

[0034] Thus, in the terminal connection structure 1, when the first terminal 11 and the second terminal 21 are in a mated state in which the first terminal 11 is mated with the second terminal 21, the pair of first conductors 12A, 12B sandwich the second conductor 22 in the stacking direction Z, and the pair of third conductors 23A, 23B further sandwich the pair of first conductors 12A, 12B which sandwich the second conductor 22, thereby holding them together. This makes it possible for the terminal connection structure 1 to easily maintain the mated state between the first terminal 11 and the second terminal 21.

[0035] As described above, the terminal connection structure 1 according to the present embodiment includes the first terminal 11 and the second terminal 21 into which the first terminal 11 fits in the fitting direction X. The first terminal 11 includes a pair of first conductors 12A, 12B formed by stacking rectangular flat plates, and a first insertion space 13 formed between the first conductors 12A, 12B. The second terminal 21 includes a second conductor 22 inserted into the first insertion space 13 in the fitted state, a pair of third conductors 23A, 23B stacked on both sides of the second conductor 22 in the stacking direction Z, and a pair of second insertion spaces 24A, 24B into which the first conductors 12A, 12B are inserted in the fitted state. The second conductor 22 has a second contact surface 25 that contacts the first contact surfaces 32 of the first conductors 12A, 12B in the fitted state. Each of the third conductors 23A, 23B has a third contact surface 42 that contacts the first contact surface 32 in the fitted state.

[0036] With the above configuration, in the terminal connection structure 1 in the fitted state, the first contact surfaces 32 provided on both sides of each of the first conductors 12A, 12B of the first terminal 11 contact the second contact surface 25 of the second conductor 22 of the second terminal 21 and the third contact surfaces 42 of each of the third conductors 23A, 23B, thereby conducting the first terminal 11 and the second terminal 21. As a result, the terminal connection structure 1 increases the number of contact points and contact area of ​​the first terminal 11 and the second terminal 21 compared to conventional connector terminals, thereby improving the conductivity between the terminals.

[0037] In the terminal connection structure 1 according to this embodiment, the pair of first conductors 12A, 12B each have a first conductor bent portion 31 that is bent so as to protrude toward a side away from the second conductor 22 in the stacking direction Z and is folded back. The pair of second insertion spaces 24A, 24B each have the first conductor bent portion 31 inserted therein in the above-mentioned fitted state. The pair of third conductors 23A, 23B each have a third conductor bent portion 41 that is bent so as to protrude toward a side away from the second conductor 22 in the stacking direction Z and is folded back. The first insertion space 13 is formed between the first conductor bent portions 31 of the pair of first conductors 12A, 12B, and the tip of the second conductor 22 is inserted therein in the above-mentioned fitted state.

[0038] With the above configuration, the terminal connection structure 1 can ensure contact between the first conductor bent portion 31 and the third conductor bent portion 41 in the fitted state, and can increase the contact area between the contact points.

[0039] In the terminal connection structure 1 according to the present embodiment, the first conductor bent portion 31 has a first contact 33 formed as a bending point where the first contact surface 32 and the third contact surface 42 come into contact, a second contact 34 formed as a bending point where the first contact surface 32 and the second contact surface 25 come into contact, and a third contact 35 formed at a position closer to the tip side than the first contact 33 and where the first contact surface 32 and the second contact surface 25 come into contact. The tip of the second conductor 22 inserted into the first insertion space 13 in the fitted state comes into contact with the second contact 34 and the third contact 35. In the fitted state, the pair of third conductors 23A, 23B sandwich and cover the first conductor bent portion 31 in the stacking direction Z, and come into contact with the first contact 33.

[0040] With the above configuration, the terminal connection structure 1 has an increased number of contacts and contact area between the first terminal 11 and the second terminal 21 compared to conventional connector terminals, thereby improving the conductivity between the terminals.

[0041] In the above embodiment, the first conductors 12A and 12B, the second conductor 22, and the third conductors 23A and 23B may be made of the same metal material, or may be made of different metal materials. [Explanation of symbols]

[0042] 1. Terminal connection structure 11 1st terminal 12A, 12B First conductor 13 First Insertion Space 21 2nd terminal 22 Second conductor 23A,23B Third conductor 24A, 24B Second insertion space 25 Second contact surface 31 First conductor bend 32 1st contact surface 33 First Contact 34 Second Contact 35 Third Contact 41 Third conductor bend 42 Third contact surface

Claims

1. A first terminal; a second terminal into which the first terminal is fitted in a fitting direction; The first terminal is A pair of first conductors formed in a rectangular plate shape and stacked in a stacking direction perpendicular to the fitting direction; a first insertion space formed between the pair of first conductors; a first contact surface provided on each of both sides of each of the first conductors in the stacking direction, the first contact surface coming into contact with the second terminal in a fitted state in which the first terminal is fitted into the second terminal, The second terminal is a second conductor formed in a rectangular flat plate shape and inserted into the first insertion space in the fitted state; a pair of third conductors stacked on both sides of the second conductor in the stacking direction, with the second conductor sandwiched between them; a pair of second insertion spaces formed between the second conductor and each of the third conductors, into which each of the first conductors is inserted in the fitted state; second contact surfaces provided on both sides of the second conductor in the stacking direction, the second contact surfaces coming into contact with the first contact surfaces of the first conductor in the fitted state; a third contact surface provided on a surface of each of the third conductors facing the first conductor in the stacking direction, the third contact surface being in contact with the first contact surface of the first conductor in the fitted state. A terminal connection structure comprising:

2. Each of the pair of first conductors has a first conductor bent portion that is bent so as to protrude toward a side that is separated from the other in the stacking direction and is folded back, each of the pair of third conductors has a third conductor bent portion that is bent so as to protrude toward a side away from the second conductor in the stacking direction and is folded back; the first insertion space is formed between the first conductor bent portions of the pair of first conductors, and a tip of the second conductor is inserted into the first insertion space in the fitted state; a pair of the second insertion spaces are respectively formed between the third conductor bent portions of the pair of the third conductors and the second conductor, and the first conductor bent portions of the first conductors are respectively inserted into the pair of the second insertion spaces in the fitted state; The terminal connection structure according to claim 1 .

3. The first conductor bend portion is a first contact formed as a bending point protruding in a direction away from each other in the stacking direction, where the first contact surface of the first conductor and the third contact surface of the third conductor come into contact with each other; a second contact formed as a bending point located on a base end side of the first contact in the fitting direction, the second contact being in contact with the first contact surface of the first conductor and the second contact surface of the second conductor; a third contact formed at a position closer to a tip end than the first contact in the fitting direction, the third contact being in contact with the first contact surface of the first conductor and the second contact surface of the second conductor; The second conductor is a tip end portion inserted into the first insertion space in the fitted state comes into contact with the second contact and the third contact, The pair of third conductors In the fitted state, the third conductor bent portion sandwiches and covers the first conductor bent portion in the stacking direction and contacts the first contact. The terminal connection structure according to claim 2 .

4. The first terminal and the second terminal are In the fitted state, the pair of first conductors sandwich the second conductor in the stacking direction, and the pair of third conductors further sandwich the pair of first conductors which sandwich the second conductor, thereby holding them together. The terminal connection structure according to claim 1 or 2.

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