JP2016152070A - Terminal connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal connection structure that is improved in vibration resistance.SOLUTION: In the terminal connection structure, a first connection terminal and a second connection terminal are connected while facing each other. The first connection terminal includes: a first base material; a first elastic piece which extends from the first base material in a cantilever shape, has a first head part at a distal end side and is elastically deformable in a first direction; and a first holding piece that is juxtaposed in the first direction while interposing a first gap between the first holding piece and the first elastic piece. The second connection terminal includes: a second base material; a second elastic piece that extends from the second base material in a cantilever shape, has a second head part at a distal end side and is elastically deformable in the first direction; and a second holding piece that is juxtaposed in the first direction while interposing a second gap between the second holding piece and the second elastic piece. In the terminal connection structure, the first connection terminal and the second connection terminal are made opposite to each other, the first head part is fitted to the second gap and the second head part is fitted to the first gap, such that the first connection terminal and the second connection terminal are connected.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a terminal connection structure in which two connection terminals are connected to face each other.

  Connection terminals such as connectors are used to connect electrical cables. In connection of cables using connection terminals, a structure in which male and female connection terminals are connected by fitting from the viewpoint of workability is often employed. In the terminal connection structure by fitting, not only the reliability of electrical connection but also the reliability of mechanical connection is important.

  In Patent Document 1, a base part to which an end of an electric wire is connected, an elastic contact piece extending from the base part, a pair of contact piece parallel parts arranged on both sides of the elastic contact piece, and a tip connection that couples the pair of contact piece parallel parts And a terminal provided with a portion. The two terminals have the same structure, and the terminals are connected by fitting in a state of facing each other.

  Patent Document 2 discloses a wire connection terminal including a male electrical contact portion at a front portion of a conductive substrate, a female electrical contact portion at an intermediate portion, and a wire connection portion at a rear portion. In this electric wire connection terminal, the male electrical contact portions of the two terminals are faced to face each other, and the elastic contact piece and the cut and raised piece forming the female electrical contact portion of the mating terminal are provided between them. The two terminals are connected by fitting.

Japanese Patent No. 5198176 Japanese Utility Model Publication No. 61-194269

  However, in the configuration in which the mating substrate portion is inserted between the elastic contact piece and the frame-like substrate portion, the elastic contact piece bends outward. For this reason, when a vibration is applied to the connection portion between the terminals, there arises a problem that the holding force of the mating substrate portion is reduced due to the elastic contact piece being bounced outward, so that it is easy to come off.

  An object of this invention is to provide the terminal connection structure excellent in vibration resistance.

  In order to solve the above problems, the terminal connection structure of the present invention is a terminal connection structure in which a first connection terminal and a second connection terminal are connected to face each other. The first connection terminal includes a first base material, a first elastic piece that extends in a cantilevered manner from the first base material, has a first head on the tip side, and is elastically deformable in a first direction; A first holding piece arranged in the first direction with a first gap between the elastic piece and the elastic piece. The second connection terminal includes a second base material, a second elastic piece that extends in a cantilevered manner from the second base material, has a second head on the tip side, and is elastically deformable in the first direction; And a second holding piece arranged in the first direction with a second gap between the elastic piece. In the terminal connection structure of the present invention, the first connection terminal and the second connection terminal face each other, the first head is fitted into the second gap, and the second head is fitted into the first gap. Thus, the first connection terminal and the second connection terminal are connected.

  According to such a configuration, when the first connection terminal and the second connection terminal are connected to face each other, the first head and the second head are connected to each other between the first holding piece and the second holding piece. It will be fitted in a state of overlapping so as to face. Thereby, between the 1st holding piece and the 2nd holding piece, a 1st head and a 2nd head come to mutually press the other party by mutual elastic force. The first head and the second head are reliably fixed between the first holding piece and the second holding piece by the reaction force of the elastic force from the first holding piece and the second holding piece.

  In the terminal connection structure of the present invention, the first head is a portion obtained by curving the tip side of the first elastic piece of the plate-like body, and the second head is the tip side of the second elastic piece of the plate-like body. A curved portion may be used. According to such a configuration, the first head and the second head themselves can be made springy, and the first head and the second head can be smoothly fitted by the curved portions on the tip side. Can be done.

  In the terminal connection structure of the present invention, the first surface of the first head facing the first holding piece has a portion parallel to the surface of the first holding piece facing the first head, and the second head The second surface facing the second holding piece may have a portion parallel to the surface facing the second head of the second holding piece. The first surface may be in contact with the second surface. According to such a configuration, the first surface of the first head and the second surface of the second head are in surface contact, and reliable conduction and fixation are performed.

  In the terminal connection structure of the present invention, in a state where the first connection terminal and the second connection terminal are connected, the first head and the second holding piece are in contact with each other, and the first head and the second head are in contact with each other. The second head and the first holding piece may come into contact with each other. According to such a configuration, when the first connection terminal and the second connection terminal are fitted to each other, contact is made at three places arranged in the first direction between the first holding piece and the second holding piece. Is called. As a result, the contact pressure can be stabilized.

  In the terminal connection structure of the present invention, the basic shapes of the first connection terminal and the second connection terminal may be the same. According to such a configuration, the first connection terminal and the second connection terminal can be efficiently manufactured.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the terminal connection structure excellent in vibration resistance.

(A)-(c) is a schematic diagram which illustrates the terminal connection structure which concerns on 1st Embodiment. (A)-(c) is a schematic cross section which shows the fitting operation | movement of a connecting terminal. It is a schematic cross section which illustrates the terminal connection structure concerning a 2nd embodiment. It is a model perspective view which illustrates the terminal connection structure concerning a 3rd embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same members are denoted by the same reference numerals, and the description of the members once described is omitted as appropriate.

(First embodiment)
1A to 1C are schematic views illustrating the terminal connection structure according to the first embodiment.
1A is a perspective view of the terminal connection structure, FIG. 1B is a cross-sectional view of the terminal connection structure, and FIG. 1C is a cross-sectional view of the connection terminal. . For convenience of explanation, FIG. 1A shows a state where the first connection terminal 1-1 and the second connection terminal 1-2 are separated.

  The terminal connection structure according to the present embodiment is a structure in which the first connection terminal 1-1 and the second connection terminal 1-2 are connected to face each other. The first connection terminal 1-1 is connected to the conductor of the first cable C1. The second connection terminal 1-2 is connected to the conductor of the second cable C2. By connecting the first connection terminal 1-1 and the second connection terminal 1-2, electrical and mechanical connection between the first cable C1 and the second cable C2 is performed.

  The first connection terminal 1-1 includes a first base member 11, a first elastic piece 12, and a first holding piece 13. The 1st base material 11 shape | molds a flat metal in the box shape, for example. A first connection piece 111 is provided on one end side of the first base material 11. The first connection piece 111 is connected to the conductor of the first cable C1 by caulking or soldering.

  The first elastic piece 12 is provided so as to extend in a cantilevered manner from the end of the first base material 11 opposite to the first connection piece 111. The first elastic piece 12 is provided so as to be elastically deformable in a direction (first direction) perpendicular to the cantilever extending direction.

  A first head 121 is provided on the distal end side of the first elastic piece 12. The first head 121 is, for example, a portion obtained by curving the tip side of a metal plate. In the present embodiment, the first head 121 includes a bent portion 121a that is bent inward from a base portion of the first elastic piece 12, an extended portion 121b that extends from the bent portion 121a to the distal end side, and an extended portion 121b. It has a curved portion 121c that is folded outward and a folded portion 121d that extends backward from the curved portion 121c.

  The first elastic piece 12 may be provided integrally with the first base material 11. The first elastic piece 12 forms a cantilevered portion from the first base material 11 by metal processing, bends the portion extending in a cantilever shape inward from the middle into a crank shape, and folds the tip to bend. Formed with.

  The first holding piece 13 is juxtaposed in the first direction with a first gap G <b> 1 provided between the first holding piece 13 and the first elastic piece 12. For example, the first holding piece 13 is provided in a cylindrical shape having an opening on the first head 121 side. The inner width of the cylinder is slightly wider than the width of the first head 121. By being provided in a cylindrical shape, the first holding piece 13 is less likely to be elastically deformed than the first elastic piece 12.

  The first gap G <b> 1 is provided between the extending portion 121 b of the first head 121 and the first holding piece 13. The first surface 12 a facing the first holding piece 13 of the extending portion 121 b has a portion parallel to the surface facing the first head 121 of the first holding piece 13. Accordingly, the first gap G1 is provided by the length in the extending direction of the extending portion 121b.

  The folded portion 121d of the first head 121 has a spring property in a direction extending outward. By having this spring property, the thickness t1 of the first head 121 is slightly larger than the width t2 of the first gap G1 (see FIG. 1C).

  The second connection terminal 1-2 has the same configuration as the first connection terminal 1-1. That is, the second connection terminal 1-2 is a second base 21 corresponding to the first base 11, a second elastic piece 22 corresponding to the first elastic piece 12, and a second corresponding to the first holding piece 13. A holding piece 23 is provided. The second elastic piece 22 has a second head 221 corresponding to the first head 121. The bent portion 221a, the extended portion 221b, the curved portion 221c, and the folded portion 221d of the second head 221 are respectively the bent portion 121a, the extended portion 121b, the curved portion 121c, and the folded portion 121d of the first head 121. And corresponding. The second gap G2 corresponds to the first gap G1.

  Thus, the basic shapes of the first connection terminal 1-1 and the second connection terminal 1-2 are the same. In the terminal connection structure according to the present embodiment, the first connection terminal 1-1 and the second connection terminal 1-2 are reversed so that they face each other and are fitted together.

  Specifically, the first connection terminal 1-1 and the second connection terminal 1-2 face each other, the first head 121 is fitted into the second gap G2, and the second head 221 is connected to the first head 221. It fits into the gap G1. Thereby, between the 1st holding piece 13 and the 2nd holding piece 23, the state which overlapped so that the 1st head 121 and the 2nd head 221 mutually turned the back, ie, the extension part 121b and the extension part It will be fitted in a state where it overlaps with 221b.

  By this fitting, the first surface 12a and the second surface 22a are in surface contact between the first holding piece 13 and the second holding piece 23, and the first head 121 and the second head 221 are mutually connected. Each other comes to press against each other by the elastic force. The first head 121 and the second head 221 are securely fixed between the first holding piece 13 and the second holding piece 23 by the reaction force of the elastic force from the first holding piece 13 and the second holding piece 23. Will be.

2A to 2C are schematic cross-sectional views illustrating the connecting terminal fitting operation.
First, as shown in FIG. 2A, the first connection terminal 1-1 and the second connection terminal 1-2 are faced to each other. At this time, the first connection terminal 1-1 and the second connection terminal 1-2 are in an inverted state.

  Next, as shown in FIG. 2B, the tip of the first connection terminal 1-1 and the tip of the second connection terminal 1-2 are brought close to each other. Then, the first head 121 of the first connection terminal 1-1 is inserted into the second gap G2 of the second connection terminal 1-2. Along with this insertion, the second head 221 of the second connection terminal 1-2 is inserted into the first gap G1 of the first connection terminal 1-1.

  Since the curved portion 121c is provided at the tip of the first head 121, the first head 121 is smoothly inserted into the second gap G2. Similarly, since the curved portion 221c is provided at the tip of the second head portion 221, the second head portion 221 is smoothly inserted into the first gap G1.

  In the first head 121, the folded portion 121d is provided so as to slightly expand outward from the curved portion 121c toward the rear, so that the first head 121 is being inserted into the second gap G2. A feeling of resistance occurs. Similarly, in the second head 221, the folded portion 221 d is provided so as to slightly expand outward from the curved portion 221 c, so that the second head 221 is inserted into the first gap G 1. A feeling of resistance occurs on the way.

  When a force is further applied in the direction in which the first head 121 and the second head 221 are inserted from the state where the resistance is generated, the first head 121 is elastically deformed according to the width of the second gap G2, and the first head 121 and the second head 221 are inserted. The two heads 221 are pushed in while being elastically deformed according to the width of the first gap G1.

  FIG. 2C shows a state in which the first head 121 is inserted to the back of the second gap G2, and the second head 221 is inserted to the back of the first gap G1. Thereby, fitting with the 1st connecting terminal 1-1 and the 2nd connecting terminal 1-2 is completed.

  Here, the surface facing the first holding piece 13 in the extending portion 121b of the first head 121 is the first surface 12a. The first surface 12 a has a portion parallel to the surface facing the first head 121 of the first holding piece 13. In addition, the surface facing the second holding piece 23 in the extending portion 221b of the second head 221 is the second surface 22a. The second surface 22 a has a portion parallel to the surface facing the second head 221 of the second holding piece 23. Accordingly, the first gap G1 and the second gap G2 are provided substantially in parallel with the insertion direction of the first head 121 and the second head 221.

  Thereby, the 1st head 121 and the 2nd head 221 can be smoothly inserted in the 2nd crevice G2 and the 1st crevice G1. Further, when the first head 121 and the second head 221 are inserted, the elastic deformation of the folded portions 121d and 221d gradually increases according to the amount of insertion. Therefore, the fitting force between the first connection terminal 1-1 and the second connection terminal 1-2 is gradually increased.

  In a state where the first connection terminal 1-1 and the second connection terminal 1-2 are fitted, the first head 121 and the second head 221 overlap so that their backs face each other. That is, the first surface 12a of the first head 121 and the second surface 22a of the second head 221 are in surface contact. By this surface contact, reliable conduction and fixing are performed.

  Further, in a state in which the first connection terminal 1-1 and the second connection terminal 1-2 are fitted, the folded portion 121d of the first head 121 and the second holding piece 23 come into contact with each other, and the first head 121 The first surface 12a and the second surface 22a of the second head 221 come into contact with each other, and the folded portion 221d of the second head 221 and the first holding piece 13 come into contact with each other. Thereby, the contact in three places arranged in a 1st direction between the 1st holding piece 13 and the 2nd holding piece 23 is performed, and stabilization of a contact pressure can be aimed at.

  Furthermore, in this embodiment, when fitting the 1st connection terminal 1-1 and the 2nd connection terminal 1-2, a mutual mutual head (1st head 121 and 2nd head 221) is a clearance gap of the other party. It is inserted into (second gap G2 and first gap G1). Thereby, the big shift | offset | difference of the central axis between the 1st connection terminal 1-1 and the 2nd connection terminal 1-2 does not arise.

(Second Embodiment)
Next, the second embodiment will be described.
FIG. 3 is a schematic cross-sectional view illustrating the terminal connection structure according to the second embodiment.
As shown in FIG. 3, the terminal connection structure according to the present embodiment is a structure that connects the first cable C <b> 1 and the second cable C <b> 2 that are coaxial cables. The first connection terminal 1-1 is connected to the inner conductor of the first cable C1, and the second connection terminal 1-2 is connected to the inner conductor of the second cable C2.

  The first shield part 51 is connected to the outer conductor of the first cable C1. The 1st shield part 51 is provided in the cylinder shape which the front end side opened, and is provided so that the outside of the 1st connecting terminal 1-1 may be surrounded. The second shield part 52 is connected to the outer conductor of the second cable C2. Similarly to the first shield part 51, the second shield part 52 is also provided in a cylindrical shape with an open end, and is provided so as to surround the outside of the second connection terminal 1-2.

  The 1st connecting terminal 1-1 and the 2nd connecting terminal 1-2 are connected by mutually facing and fitting. In the present embodiment, together with this connection, the first shield part 51 and the second shield part 52 are fitted so that the respective opening sides face each other. Thus, the first connection terminal 1-1 and the second connection terminal 1-2 are surrounded by the first shield part 51 and the second shield part 52.

  By connecting the first shield part 51 and the second shield part 52, the first connection terminal 1-1 and the second connection terminal 1-2 are electromagnetically shielded. In the terminal connection structure of this embodiment, the first shield terminal 51 and the second shield part 52 are connected together with the connection between the first connection terminal 1-1 and the second connection terminal 1-2, and the shielding effect is high. A terminal connection structure is realized.

(Third embodiment)
Next, the third embodiment will be described.
FIG. 4 is a schematic perspective view illustrating a terminal connection structure according to the third embodiment. For convenience of explanation, FIG. 4 shows a state where the connection terminals are separated from each other.
As shown in FIG. 4, the terminal connection structure according to the present embodiment is a structure for connecting a plurality of cables. In the example shown in FIG. 4, the cable group GR1 of the first cable C1 and the third cable C3 and the cable group GR2 of the second cable C2 and the fourth cable C4 are connected. The cable groups GR1 and GR2 are, for example, stranded wires (twisted pair cables).

  The first connection terminal 1-1 is connected to the conductor of the first cable C1, and the second connection terminal 1-2 is connected to the conductor of the second cable C2. The third connection terminal 1-3 is connected to the conductor of the third cable C3, and the fourth connection terminal 1-4 is connected to the conductor of the fourth cable C4. Here, the third connection terminal 1-3 has the same configuration as the first connection terminal 1-1, and the fourth connection terminal 1-4 has the same configuration as the second connection terminal 1-2.

  The first connection terminal 1-1 and the third connection terminal 1-3 are juxtaposed with each other and are in an inverted state. In addition, the second connection terminal 1-2 and the fourth connection terminal 1-4 are juxtaposed with each other and are in an inverted state.

  The first connection terminal 1-1 and the second connection terminal 1-2 face each other and are in an inverted state. In addition, the third connection terminal 1-3 and the fourth connection terminal 104 face each other and are reversed from each other.

  The connection between the cable group GR1 and the cable group GR2 is made by fitting the first connection terminal 1-1 and the second connection terminal 1-2, and connecting the third connection terminal 1-3 and the fourth connection terminal 1-4. This is done by fitting. Although not shown, the first connection terminal 1-1 and the third connection terminal 1-3 of the cable group GR1 are stored in one housing, and the second connection terminal 1-2 and the fourth connection terminal of the cable group GR2 are stored. You may make it accommodate 1-4 in another one housing. Thereby, the connection between the plurality of connection terminals is performed by the coupling of the housings.

  In the above description, an example in which two cables are included in one cable group has been described, but three or more cables may be included in one cable group. In this case, a connection terminal may be connected to each cable.

  As described above, according to the embodiment, between the first holding piece 13 and the second holding piece 23, the first head 121 and the second head 221 push their opponents with their respective elastic forces. Even if an external force in a direction in which the contact on the first head side is weakened is applied, the second head side contact acts in a direction that is strengthened by the mutual back side contact. The 1 connection terminal 1-1 and the 2nd connection terminal 1-2 can be contacted and fixed reliably. Therefore, it is possible to provide a terminal connection structure having excellent vibration resistance and impact resistance.

  Although the present embodiment has been described above, the present invention is not limited to these examples. For example, those in which the person skilled in the art appropriately added, deleted, and changed the design of each of the above-described embodiments, and combinations of the features of each embodiment as appropriate, also have the gist of the present invention. As long as it is within the scope of the present invention.

1-1 ... 1st connection terminal 1-2 ... 2nd connection terminal 1-3 ... 3rd connection terminal 1-4 ... 4th connection terminal 11 ... 1st base material 12 ... 1st elastic piece 12a ... 1st surface 13 ... 1st holding piece 21 ... 2nd base material 22 ... 2nd elastic piece 22a ... 2nd surface 23 ... 2nd holding piece 51 ... 1st shield part 52 ... 2nd shield part 104 ... 4th connection terminal 111 ... 1st Connection piece 121 ... first head 121a ... bending part 121b ... extension part 121c ... bending part 121d ... folding part 221 ... second head 221a ... bending part 221b ... extension part 221c ... bending part 221d ... folding part C1 ... 1st cable C2 ... 2nd cable C3 ... 3rd cable C4 ... 4th cable G1 ... 1st gap G2 ... 2nd gap GR1 ... Cable group GR2 ... Cable group

Claims (6)

A terminal connection structure in which the first connection terminal and the second connection terminal are connected to face each other;
The first connection terminal is
A first substrate;
A first elastic piece that extends in a cantilevered manner from the first base, has a first head on the tip side, and is elastically deformable in a first direction;
A first holding piece arranged in the first direction with a first gap between the first elastic piece;
With
The second connection terminal is
A second substrate;
A second elastic piece extending in a cantilevered manner from the second base material, having a second head on the tip side, and elastically deformable in the first direction;
A second holding piece arranged in the first direction with a second gap between the second elastic piece;
With
The first connection terminal and the second connection terminal face each other,
Fitting the first head into the second gap;
The terminal connection structure is characterized in that the first connection terminal and the second connection terminal are connected by fitting the second head into the first gap. The first head is a portion obtained by curving the tip side of the first elastic piece of the plate-like body,
2. The terminal connection structure according to claim 1, wherein the second head is a portion obtained by curving the tip side of the second elastic piece of the plate-like body. The first surface of the first head facing the first holding piece has a portion parallel to the surface of the first holding piece facing the first head;
The second surface of the second head facing the second holding piece has a portion parallel to the surface of the second holding piece facing the second head. Terminal connection structure.   The terminal connection structure according to claim 3, wherein the first surface is in contact with the second surface.   In a state where the first connection terminal and the second connection terminal are connected, the first head and the second holding piece are in contact, the first head and the second head are in contact, The terminal connection structure according to claim 1, wherein the second head and the first holding piece are in contact with each other.   The terminal connection structure according to claim 1, wherein basic shapes of the first connection terminal and the second connection terminal are the same.