JP2018041541A - Female terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress wear of a contact portion of both terminals.SOLUTION: A female terminal 10 disclosed by the specification includes: a cylindrical connection part 20 in which a male terminal T is inserted into and removed from the inside; a pair of upper and lower contact pieces 23 which is arranged in the cylindrical connection part 20 and has contact parts 26 capable of elastically sandwiching the male terminal T inserted into the cylindrical connection part 20 from both sides in up-and-down directions; and elastic absorbing parts 27 which are provided between an opening edge part 22 of a terminal insertion port 21 provided in the cylindrical connection part 20 and respective contact parts 26 in the pair of upper and lower contact pieces 23 and capable of being elastically deformed in the longitudinal direction.SELECTED DRAWING: Figure 8

Description

  The technique disclosed by this specification is related with a female terminal.

  For example, the thing of Unexamined-Japanese-Patent No. 2013-243016 (following patent document 1) is known as a female terminal to which the male terminal which has a flat male connection part is connected. The female terminal includes a square tube portion into which the male connection portion of the male terminal is inserted from the front, and an elastic contact piece that elastically contacts the male connection portion of the male terminal is formed in the square tube portion. Has been. The elastic contact piece has a form extending from the upper edge and the lower edge of the front end opening edge of the rectangular tube portion into the rectangular tube portion, and a plurality of elastic contact pieces are inserted into the rectangular tube portion. Both terminals are electrically connected by elastically holding the connecting portion from both sides in the vertical direction.

JP 2013-243016 A

  By the way, when the female terminal is used in a place where vibration is generated or a high temperature and a low temperature are repeated, the male contact portion of the male terminal is sandwiched from both sides in the vertical direction by elastic contact pieces. Since the female terminal and the male terminal slide slightly relative to each other in the front-rear direction, the contact portion may be worn and connection reliability of both terminals may be reduced.

  In this specification, the technique which suppresses abrasion of the contact part of both terminals is disclosed.

  The technology disclosed in the present specification includes a cylindrical connection part into which a male terminal is inserted and removed, and the male terminal that is arranged in the cylindrical connection part and is inserted into the cylindrical connection part from both sides. A plurality of elastic contact pieces each having a contact portion that can be sandwiched between them, and an elastic absorbing portion that is provided between the cylindrical connection portion and the contact portion and is elastically deformable in the insertion / extraction direction of the male terminal; did.

  According to the female terminal having such a configuration, even when a relative displacement occurs between the male terminal and the female terminal in the male terminal insertion / extraction direction, the elastic absorbing portion is elastically deformed in the male terminal insertion / extraction direction. By extending and contracting, the contact portion of the elastic contact piece can be made to follow the male terminal, and sliding of the male terminal and the contact portion can be suppressed. Thereby, it can suppress that the connection reliability of a female terminal and a male terminal falls.

The female terminal disclosed by this specification is good also as the following structures.
The elastic contact piece is provided at an opening edge portion where the male terminal is inserted into the cylindrical connection portion in a form extending in the insertion / extraction direction of the male terminal, and the elastic absorption portion is the elastic contact portion. It is good also as a structure bent in the direction which cross | intersects the insertion / extraction direction of the said male terminal in the base end part of a piece.
According to such a structure, an elastic absorption part can be comprised only by bending the base end part of an elastic contact piece in the direction which cross | intersects the insertion / extraction direction of a male terminal.

The said elastic absorption part is good also as a structure which has the some elastic bending part bent in the direction which cross | intersects the insertion / extraction direction of the said male terminal.
According to such a configuration, since the plurality of elastic bent portions are provided in the direction intersecting the insertion / extraction direction of the male terminal at the base end portion of the elastic contact piece, for example, only one elastic bent portion is provided in the elastic absorbing portion. Compared with the case where it is, it can make it easy to suppress the position shift of the front-back direction in an elastic absorption part.

  According to the technology disclosed in this specification, it is possible to suppress wear of the contact portions of both terminals.

Perspective view of female terminal Plan view Front view Side view AA line sectional view of FIG. The top view which shows the state which the female terminal and the male terminal connected BB sectional view of FIG. Sectional drawing which shows typically the state which the male terminal clamped by a pair of elastic contact piece shifted slightly back The principal part expanded sectional view of FIG. Sectional drawing which shows typically the state which the male terminal clamped by a pair of elastic contact piece shifted | deviated slightly forward 10 is an enlarged cross-sectional view of the main part of FIG.

<Embodiment>
An embodiment of the technology disclosed in this specification will be described with reference to FIGS.
This embodiment illustrates the female terminal 10 to which a flat male terminal T can be connected from the front. In the following description, the vertical direction is based on the vertical direction in FIGS. Further, the front-rear direction is described with reference to the direction in which the male terminal T and the female terminal 10 are connected to each other in FIGS.

  The female terminal 10 is formed by processing a metal plate excellent in conductivity with a press or the like, and as shown in FIGS. 1 and 7, a cylindrical connection in which the male terminal T is inserted and removed in the front-rear direction. A portion 20 and a wire connecting portion 12 provided via a connecting portion 11 connected to the rear end of the cylindrical connecting portion 20 are provided.

  As shown in FIGS. 1, 6, and 7, the electric wire connecting portion 12 includes a bottom plate 13 on which the core wire W <b> 1 exposed at the end of the electric wire W is placed, and a pair of wire barrels that rise from both side edges in the width direction of the bottom plate 13. The female terminal 10 is electrically connected to the terminal of the electric wire W by crimping and crimping the pair of wire barrels 14 to the core wire W1 in a state where the core wire W1 is placed on the bottom plate 13. It is like that.

  As shown in FIGS. 1 and 3, the cylindrical connecting portion 20 is formed in a rectangular tube shape having a substantially rectangular shape opened in the front-rear direction, and is a terminal insertion port that is a substantially rectangular opening in front. The male terminal T can be inserted from 21.

  As shown in FIG. 4, male terminals T to be inserted into the cylindrical connecting portion 20 are provided on both upper and lower sides on the upper edge 22A and the lower edge 22B of the opening edge portion 22 in the terminal insertion port 21 of the cylindrical connecting portion 20. A pair of upper and lower elastic contact pieces 23 elastically sandwiched from each other are provided so as to be vertically symmetric with respect to a substantially central portion in the vertical direction of the cylindrical connection portion 20.

  As shown in FIGS. 4 and 5, the pair of upper and lower elastic contact pieces 23 includes a pair of upper and lower contact pieces main bodies 24 extending from the front part to the rear part in the cylindrical connection part 20. The main body 24 can be elastically deformed in the vertical direction so as to be separated from each other.

The rear ends of the pair of upper and lower contact piece main bodies 24 are rounded chevron portions 25 projecting toward each other, and the projecting ends of the chevron portions 25 are inserted into the cylindrical connection portion 20. A contact portion 26 that elastically contacts the male terminal T is provided.
In the natural state where the elastic contact pieces 23 are not elastically deformed, the contact portions 26 of the pair of elastic contact pieces 23 are in contact with each other in the vertical direction as shown in FIGS.

  On the other hand, when the male terminal T is inserted to the normal position in the cylindrical connecting portion 20, the contact portions 26 in the pair of contact piece main bodies 24 are formed on the upper and lower surfaces at the front end portion of the male terminal T as shown in FIG. The male contact point T1 provided is brought into contact so as to be elastically sandwiched from both sides in the vertical direction. Thereby, the male side contact part T1 and the contact part 26 are electrically connected, and the male terminal T and the female terminal 10 are electrically connected.

  Now, as shown in FIGS. 4, 5, and 7, the pair of upper and lower elastic contact pieces 23 are formed in a cylindrical shape with the upper edge 22 </ b> A and the lower edge 22 </ b> B of the opening edge 22 in the terminal insertion port 21 of the cylindrical connection portion 20. A pair of upper and lower contact piece main bodies 24 arranged in the connecting portion 20 are connected to each other in the front-rear direction, and a pair of elastic absorbing portions 27 are provided.

  Each elastic absorbing portion 27 is bent into a wave shape a plurality of times (twice in the present embodiment) in the vertical direction intersecting the insertion / extraction direction of the male terminal T at the base end portion that is the base portion of the pair of upper and lower elastic contact pieces 23. The bent portion is elastically deformed in the front-rear direction, and is expanded and contracted in the front-rear direction, which is the insertion / removal direction of the male terminal T.

  Specifically, as shown in FIGS. 8 and 10, each elastic absorbing portion 27 slightly protrudes forward from the opening edge portion 22 of the terminal insertion port 21, and then rearward toward the inside of the cylindrical connection portion 20. The first elastic bent portion 28 bent so as to be folded back, and in the vertical direction to a substantially central portion in the vertical direction of the cylindrical connecting portion 20 in a form slightly inclined rearward from the rear edge of the first elastic bent portion 28 Bending so as to fold backward from the extended first extending portion 29 and the inner surface of the cylindrical connecting portion 20 on the side where the root of the elastic contact piece 23 is arranged from the rear end edge of the first extending portion 29 The second elastic bent portion 30 and the inner surface on the side where the root of the elastic contact piece 23 is arranged in the cylindrical connecting portion 20 in a form inclined backward from the rear end edge of the second elastic bent portion 30. The second extended portion 31 extended from the rear and the rear end edge of the second extended portion 31 are directed rearward. It is configured to include a third elastic bent portion 32 that is continuously connected to the front end edge of the contact piece main body 24 in a form that is bent back toward the substantially central portion in the vertical direction of the cylindrical connecting portion 20. ing.

  Then, each of the first elastic bent portion 28, the second elastic bent portion 30, and the third elastic bent portion 32 is elastically deformed in the front-rear direction, and the elastic absorbing portion 27 expands and contracts in the front-rear direction. As shown in FIG. 10, the contact piece main body 24, and by extension, the contact portion 26 of the angle portion 25 is displaced in the front-rear direction.

The present embodiment is configured as described above. Next, the operation and effect of the female terminal 10 will be described.
First, the connection between the female terminal 10 and the male terminal T will be described.
In order to connect the female terminal 10 and the male terminal T, the male terminal T is inserted into the terminal insertion port 21 in the cylindrical connection portion 20 of the female terminal 10.

  When the male terminal T is inserted up to about half of the cylindrical connecting portion 20, the tip of the male terminal T comes into contact with the contact piece main bodies 24 of the pair of elastic contact pieces 23. When the male terminal T is further inserted into the cylindrical connecting portion 20 from this state, the male terminal T enters between the pair of elastic contact pieces 23 so as to push the contact piece main body 24 up and down.

  Then, when the male terminal T reaches the normal position in the cylindrical connecting portion 20, the male side contact portion T 1 of the male terminal T is moved by the contact portion 26 in the mountain-shaped portion 25 of the contact piece main body 24 as shown in FIG. It is elastically clamped from both sides in the vertical direction. Thereby, the male side contact part T1 and the contact part 26 are electrically connected, and the male terminal T and the female terminal 10 are electrically connected.

  By the way, when the male terminal T and the female terminal 10 are used in a place where vibration is generated or used in a place where high and low temperatures are repeated, the vertical direction and the front and rear direction between the female terminal 10 and the male terminal T are used. A relative displacement occurs in the direction.

  Here, the pair of upper and lower elastic contact pieces 23 elastically sandwich the male terminal T from both sides in the vertical direction, and can follow the positional deviation in the vertical direction. Wear of each contact portion 26, T1 due to the slight sliding of the portion T1 and the contact portion 26 in the front-rear direction, and a decrease in connection reliability of both terminals 10, T due to wear of each contact portion 26, T1 Is concerned.

  However, according to the present embodiment, the first elastic bent portion 28 and the second elastic portion of the elastic absorbing portion 27 even when a relative displacement occurs in the front-rear direction between the female terminal 10 and the male terminal T. Each of the bent portion 30 and the third elastic bent portion 32 is elastically deformed in the front-rear direction, and the elastic absorption portion 27 expands and contracts in the front-rear direction, so that the positional deviation in the front-rear direction between the female terminal 10 and the male terminal T is increased. Absorbed, the contact portion 26 of the elastic contact piece 23 follows the male terminal T.

  For example, when the male terminal T is displaced forward with respect to the female terminal 10, as shown in FIGS. 8 and 9, the first elastic bending portion 28 is elastically deformed so that the inner angle is narrowed, and the second elastic bending is performed. The elastic absorbing portion 27 is displaced from the solid line in FIGS. 8 and 9 to the position of the two-dot chain line by elastically deforming the inner angle of the portion 30 and the third elastic bent portion 32 so that the contact piece main body 24 is rearward. Move to. Thereby, the contact part 26 follows the male side contact part T11 of the male terminal T displaced forward.

  Further, for example, when the male terminal T is displaced backward with respect to the female terminal 10, as shown in FIGS. 10 and 11, the second elastic member 28 is elastically deformed so that the inner angle of the first elastic bent portion 28 is widened, and the second By elastically deforming so that the inner angles of the elastic bent portion 30 and the third elastic bent portion 32 are narrowed, the elastic absorbing portion 27 is displaced from the solid line in FIGS. Moves forward. Thereby, the contact part 26 follows the male side contact part T11 of the male terminal T displaced backward.

  That is, the displacement of the contact piece main body 24 with respect to the male terminal T can prevent the male contact point T1 and the contact point 26 from sliding, and the connection between the female terminal 10 and the male terminal T can be suppressed. It can suppress that reliability falls.

  As described above, according to the present embodiment, the elastic absorbing portion 27 is provided at the base end portion of the elastic contact piece 23, and the first elastic bent portion 28, the second elastic bent portion 30, and the second elastic bent portion 30 of the elastic absorbing portion 27 are provided. Since each of the three elastic bent portions 32 can be elastically deformed in the front-rear direction, even if a relative positional shift occurs in the front-rear direction between the male terminal T and the female terminal 10, the first elasticity A plurality of elastic bent portions of the bent portion 28, the second elastic bent portion 30, and the third elastic bent portion 32 are elastically deformed in the front-rear direction, and the elastic absorbing portion 27 expands and contracts in the front-rear direction, thereby causing a position in the front-rear direction. Misalignment is absorbed.

  Thereby, the contact part 26 of the elastic contact piece 23 can be made to follow the male side contact part T1 of the male terminal T, and it can suppress that the male side contact part T1 and the contact part 26 slide. As a result, it can suppress that the connection reliability of the female terminal 10 and the male terminal T falls.

  Further, according to the present embodiment, the elastic bending portion 27 is elastically deformed in the front-rear direction at a plurality of locations of the first elastic bending portion 28, the second elastic bending portion 30, and the third elastic bending portion 32. Compared with the case where only one location is provided, the elastic absorbing portion 27 can be greatly expanded and contracted in the front-rear direction, and the followability of the contact portion 26 to the male terminal T in the elastic contact piece 23 can be improved. . Thereby, it can further suppress that the male side contact part T1 and the contact part 26 slide.

  Moreover, according to this embodiment, since the elastic absorption part 27 is distribute | arranged to the dead space which is vacant space in the cylindrical connection part 20, when providing an elastic contraction part in the outer side of a cylindrical connection part, for example In comparison, the sliding of the male terminal T and the contact portion 26 can be suppressed while reducing the size of the female terminal 10.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings, and includes, for example, the following various aspects.

  (1) In the above embodiment, the elastic contact pieces 23 are provided on the upper edge 22 </ b> A and the lower edge 22 </ b> B of the opening edge 22 of the terminal insertion port 21. However, the present invention is not limited thereto, and elastic contact pieces may be provided on both side edges in the width direction at the opening edge of the terminal insertion port.

  (2) In the above embodiment, the elastic absorbing portion 27 is provided with the three elastic bent portions of the first elastic bent portion 28, the second elastic bent portion 30, and the third elastic bent portion 32. However, the present invention is not limited thereto, and the elastic bending portion may be configured to be one or two as long as the elastic absorbing portion can be elastically deformed and contracted in the front-rear direction by the amount of positional deviation between the female terminal and the male terminal. You may comprise.

  (3) In the said embodiment, it was set as the structure by which the elastic contact piece 23 was provided in the opening edge part 22 of the terminal insertion port 21 of the cylindrical connection part 20. As shown in FIG. However, the present invention is not limited to this, and the elastic contact piece may be arranged in the cylindrical connection part by assembling a separate contact member provided with the elastic contact piece in the cylindrical connection part.

(4) In the said embodiment, it was set as the structure which connects the electric wire connection part 12 to the electric wire W by crimping and crimping | bonding a pair of wire barrel 14 to the core wire W1 of the electric wire W. As shown in FIG. However, the present invention is not limited to this, and a configuration in which the electric wire is connected to the electric wire connecting portion by a known method such as welding may be adopted.

10: Female terminal 20: Cylindrical connecting portion 22: Opening edge of terminal insertion slot (an example of “opening edge”)
23: Elastic contact piece 26: Contact portion 27: Elastic absorption portion 28: First elastic bent portion (an example of “elastic bent portion”)
30: 2nd elastic bending part (an example of an "elastic bending part")
32: Third elastic bent portion (an example of “elastic bent portion”)
T: Male terminal

Claims (3)

A cylindrical connection part into which the male terminal is inserted and removed;
A plurality of elastic contact pieces having contact portions arranged in the cylindrical connection portion and capable of elastically holding the male terminal inserted into the cylindrical connection portion from both sides;
A female terminal provided with an elastic absorption part provided between the cylindrical connection part and the contact part and elastically deformable in the insertion / extraction direction of the male terminal. The elastic contact piece is provided at an opening edge into which the male terminal in the cylindrical connection portion is inserted in a form extending in the insertion / extraction direction of the male terminal,
2. The female terminal according to claim 1, wherein the elastic absorbing portion is bent in a direction intersecting an insertion / extraction direction of the male terminal at a base end portion of the elastic contact piece.   3. The female terminal according to claim 1, wherein the elastic absorbing portion includes a plurality of elastic bent portions that are bent in a direction intersecting with the insertion / extraction direction of the male terminal.

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