Terminal connection structure

Abstract

To provide a terminal connection structure that can suppress wear caused by insertion and removal, and suppress poor conductivity.SOLUTION: When a male terminal 3 is inserted into a pair of leaf spring portions 22, 22, a pair of protrusions 224, 224 of a female terminal 2 come into contact with a tip portion 31 of the male terminal 3 and slide against each other while the male terminal 3 is inserted. At this time, a first contact portion 225 of the female terminal 2 is not in contact. When the pair of protrusions 224, 224 reach the pair of cutout portions 32, 32 of the male terminal 3 and are inserted, the first contact portion 225 of the female terminal 2 and a second contact portion 33 of the male terminal 3 come into contact and are connected.SELECTED DRAWING: Figure 4

Description

[Technical field]

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

[0002] A conventional terminal connection structure is known as the connector disclosed in Patent Document 1. The connector in Patent Document 1 has an equipment-side terminal provided with a pair of elastic contact pieces. A mating terminal of a mating connector is inserted between the pair of elastic contact pieces.

[0003] However, in the above-mentioned connector, when the mating terminal is repeatedly inserted and removed between the pair of resilient contact pieces, the resilient contact pieces and the mating terminal wear out, resulting in poor electrical continuity. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2015-082465 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a terminal connection structure that can suppress wear due to insertion and removal and suppress poor electrical continuity. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the terminal connection structure according to the present invention has the following features. A terminal connection structure including a first terminal and a second terminal connected to the first terminal, the first terminal has a pair of leaf spring portions sandwiching the second terminal therebetween; The pair of leaf spring portions are provided in a curved shape that is convex toward each other in the sandwiching direction, the leaf spring portion has a pair of protruding portions that protrude from an apex of the curved shape in a direction approaching each other in the sandwiching direction and are aligned in a width direction, and a first contact portion that is provided between the pair of protruding portions and comes into contact with the second terminal, The second terminal has a plate-like tip portion that is wider than the space between the pair of protruding portions, a pair of notches or a pair of holes that are provided on a side farther from the first terminal than the tip portion and into which the pair of protruding portions are inserted, and a second contact portion that is provided between the pair of notches or the pair of holes and contacts the first contact portion. It has a terminal connection structure. Effect of the Invention

[0007] According to the present invention, it is possible to provide a terminal connection structure that can suppress wear caused by insertion and removal and suppress poor electrical continuity.

[0008] The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following description of the embodiment of the present invention (hereinafter, referred to as "embodiment") with reference to the accompanying drawings. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing one embodiment of a terminal connection structure of the present invention. [Diagram 2] FIG. 2 is a perspective view of a female terminal that constitutes the terminal connection structure shown in FIG. [Diagram 3] FIG. 3 is a perspective view of a male terminal that constitutes the terminal connection structure shown in FIG. [Figure 4] FIG. 4 is a perspective view of the terminal connection structure in the middle of connecting the male terminal and the female terminal shown in FIG. [Diagram 5] FIG. 5 is a perspective view of the terminal connection structure after the male terminal and the female terminal shown in FIG. 1 are connected together. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0011] For the sake of convenience, the following definitions are used for "front", "rear", "left", "right", "upper" and "lower" as shown in Figs. 1 to 5. The "front-rear direction", "left-right direction" and "up-down direction" are mutually perpendicular. The up-down direction corresponds to the "clamping direction" of the present invention, and the left-right direction corresponds to the "width direction" of the present invention.

[0012] 1 etc., the terminal connection structure 1 includes a female terminal 2 as a first terminal, and a male terminal 3 as a second terminal connected to the female terminal 2. The female terminal 2 includes a rectangular tubular base 21 and a pair of leaf spring portions 22, 22 extending rearward from the base 21 and sandwiching the male terminal 3 therebetween.

[0013] The base 21 has a pair of base plate portions 211, 211 and a pair of connecting plate portions 212, 212. The pair of base plate portions 211, 211 are arranged at an interval in the up-down direction. The pair of base plate portions 211, 211 are provided parallel to each other. The pair of connecting plate portions 212, 212 are arranged at an interval in the left-right direction and connect the pair of base plate portions 211, 211 to each other. The left connecting plate portion 212 connects the left ends of the pair of base plate portions 211, 211 to each other. The right connecting plate portion 212 connects the right ends of the pair of base plate portions 211, 211 to each other.

[0014] The pair of leaf spring parts 22, 22 extend rearward from the rear ends of the pair of board parts 211, 211, and connect the male terminal 3 by sandwiching both sides in the up-down direction. Each of the pair of leaf spring parts 22, 22 has a first part 221, a second part 222, and a third part 223. The first part 221 is provided continuous with the rear end of the board part 211, and is provided so that the distance between the first part 221 and the second part 222 is increased toward the rear end. The second part 222 is provided continuous with the rear end of the first part 221, and is provided so that the distance between the second part 222 is decreased toward the rear side. The third part 223 is provided continuous with the rear end of the second part 222, and is provided so that the distance between the second part 222 is increased toward the rear side.

[0015] The pair of leaf spring parts 22, 22 are provided in a curved shape that is convex toward each other in the up-down direction by the second part 222 and the third part 223. In addition, the boundary between the second part 222 and the third part 223 becomes the apex of the curved shape.

[0016] As shown in Fig. 2, each of the pair of leaf spring parts 22, 22 has a pair of protrusions 224, 224 that protrude from the top of the curved shape in a direction approaching each other in the up-down direction and are aligned in the left-right direction, and a first contact part 225 that is provided between the pair of protrusions 224, 224 and comes into contact with the male terminal 3. The pair of protrusions 224, 224 are provided by stamping. To explain in detail, the upper leaf spring part 22 has the pair of protrusions 224, 224 provided by stamping the top of the curved shape from top to bottom. The lower leaf spring part 22 has the pair of protrusions 224, 224 provided by stamping the top of the curved shape from bottom to top.

[0017] 3, the male terminal 3 is formed in a flat plate shape. The male terminal 3 has a tip portion 31 that is wider than the space between the pair of protrusions 224, 224, a pair of notches 32, 32 that are provided rearward (away from the female terminal 2) from the tip portion 31 and into which the pair of protrusions 224, 224 are inserted, and a second contact portion 33 that is provided between the pair of notches 32, 32 and contacts the first contact portion 225. The pair of notches 32, 32 are provided on both sides of the male terminal 3 in the left-right direction.

[0018] Next, a procedure for connecting the male terminal 3 and the female terminal 2 described above will be described. First, the tip portion 31 of the male terminal 3 is inserted from the rear end (tip) of the pair of leaf spring portions 22, 22. The tip portion 31 of the male terminal 3 is guided by the third portion 223 to the top of the curved shape of the pair of leaf spring portions 22, 22.

[0019] 4, when the tip 31 of the male terminal 3 is inserted between the curved apexes of the pair of leaf spring parts 22, 22, the pair of leaf spring parts 22, 22 bend in a direction in which the apexes of the curved shape move away from each other. As described above, the width of the tip 31 of the male terminal 3 is set wider than the width of the pair of protrusions 224, 224. Therefore, when the tip 31 of the male terminal 3 is inserted between the curved apexes of the pair of leaf spring parts 22, 22, the pair of protrusions 224, 224 come into contact with the tip 31, and the first contact part 225 provided between the pair of protrusions 224, 224 does not come into contact with the tip 31.

[0020] The male terminal 3 is inserted while the pair of protrusions 224, 224 slide against the tip 31. When the tip 31 of the male terminal 3 is further inserted and the pair of protrusions 224, 224 reach the pair of notches 32, 32, the curved apexes of the pair of leaf springs 22, 22 are restored in a direction approaching each other, and the pair of protrusions 224, 224 are inserted into the pair of notches 32, 32, as shown in FIG. 5. At this time, the first contact portion 225 comes into contact with the second contact portion 33 provided between the pair of notches 32, 32. Even after the pair of leaf springs 22, 22 are restored, they are still bent in a direction away from each other compared to when the male terminal 3 is not inserted, so a force is applied in a direction in which the first contact portion 225 approaches the second contact portion 33.

[0021] According to the above-described embodiment, the male terminal 3 is inserted between the pair of leaf spring portions 22, 22 of the female terminal 2, and the pair of protrusions 224, 224 are inserted while sliding against the tip portion 31 of the male terminal 3 until the first contact portion 225 comes into contact with the second contact portion 33, but the first contact portion 225 does not slide against the tip portion 31. This makes it possible to suppress wear of the first contact portion 225 due to insertion and removal, and thus suppress poor electrical continuity.

[0022] The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, etc. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary as long as the present invention can be achieved, and are not limited.

[0023] According to the embodiment described above, the male terminal 3 is provided with a pair of notches 32 into which the pair of protrusions 224, 224 are inserted, but this is not limited thereto. The male terminal 3 may be provided with a pair of holes into which the pair of protrusions 224, 224 are inserted. The holes may be formed by stamping out the male terminal 3 to make a recess, or may be through holes.

[0024] Here, the features of the embodiments of the terminal connection structure according to the present invention described above will be briefly summarized and listed below [1].

[0025] [1] A terminal connection structure (1) including a first terminal (2) and a second terminal (3) connected to the first terminal (2), The first terminal (2) has a pair of leaf spring portions (22, 22) sandwiching the second terminal (3) therebetween, The pair of leaf spring portions (22, 22) are provided in a curved shape that is convex toward each other in the sandwiching direction (up-down direction), The leaf spring portion (22, 22) has a pair of protruding portions (224, 224) that protrude from an apex of the curved shape in a direction approaching each other in the sandwiching direction (up-down direction) and are arranged in the width direction (left-right direction), and a first contact portion (225) that is provided between the pair of protruding portions (224, 224) and comes into contact with the second terminal (3), The second terminal (3) has a plate-like tip portion (31) that is wider than the space between the pair of protrusions (224, 224), a pair of notches (32, 32) or a pair of holes that are provided on a side farther from the first terminal (2) than the tip portion (31) and into which the pair of protrusions (224, 224) are inserted, and a second contact portion (33) that is provided between the pair of notches (32, 32) or the pair of holes and that comes into contact with the first contact portion (225). Terminal connection structure (1).

[0026] According to the terminal connection structure having the configuration [1] above, the male terminal (3) is inserted between the pair of leaf spring portions (22, 22) of the female terminal (2), and the pair of protrusions (224, 224) are inserted while sliding against the tip portion (31) of the male terminal (3) until the first contact portion (225) comes into contact with the second contact portion (33), but the first contact portion (225) does not slide against the tip portion (31). This makes it possible to suppress wear of the first contact portion (225) due to insertion and removal, and thus suppress poor electrical continuity. [Explanation of symbols]

[0027] 1 Terminal connection structure 2 Female terminal (first terminal) 3 Male terminal (2nd terminal) 22 Leaf spring part 31 Tip 32 Notch 33 Second contact part 224 Protrusion 225 1st contact part

Claims

[Claim 1] A terminal connection structure including a first terminal and a second terminal connected to the first terminal, the first terminal has a pair of leaf spring portions sandwiching the second terminal therebetween, The pair of leaf spring portions are provided in a curved shape that is convex toward each other in the sandwiching direction, the leaf spring portion has a pair of protruding portions that protrude from an apex of the curved shape in a direction approaching each other in the sandwiching direction and are aligned in a width direction, and a first contact portion that is provided between the pair of protruding portions and comes into contact with the second terminal, the second terminal is formed in a plate shape and has a tip portion that is wider than the distance between the pair of protruding portions, a pair of notches or a pair of holes that are provided on a side farther from the first terminal than the tip portion and into which the pair of protruding portions are inserted, and a second contact portion that is provided between the pair of notches or the pair of holes and contacts the first contact portion. Terminal connection structure.

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