JPH0935813A - Receptacle electric terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receptacle terminal whose operation part for generating disengagement from a tab terminal as the mating party is formed so as not to result in too long terminal, whose engaging part is not likely to cause easy slipping off, and which sustains well the force in the direction of drawing off the tab terminal. SOLUTION: A receptacle terminal concerned has an operation part 13e which is cut up and exerts an operational force to generate disengagement from a tab terminal as the mating party in the direction approx. perpendicular to the direction in which the tab terminal is inserted, and thereby it is possible to shorten the overall length of the terminal because the region in the longitudinal direction of the terminal 10 required to cut up the operational part 13e can be managed with a smaller dimension than in the arrangement where the cut-up is made in the extension direction of a tab piece 13. Also an engagement piece 13d is cut up in the same direction, and the draw-out force for the tab terminal is applied in the longitudinal direction of the fixed end of the detent piece 13d, so that the sustaining force against drawing-out is enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric terminal, and more particularly to a receptacle electric terminal which is fitted with a flat tab-shaped male terminal.

[0002]

2. Description of the Related Art Receptacle electrical terminals that are fitted with flat tab-shaped male terminals have been conventionally known. This receptacle electrical terminal is obtained by punching out and cutting a single metal flat plate, and bending the cut flat plate. That is, it consists of a predetermined base and both side walls that are bent from both sides of the base and rise up from the base, and the free end side is bent so as to be rolled up above the base of the side wall. The mating tab terminal is surrounded by the part that is wound around the mating tab terminal. Then, in order to ensure electrical contact with the mating tab terminal when the mating tab terminal is received in the receiving portion, a tongue piece extending in a direction in which the mating tab terminal is inserted is formed by being cut and raised obliquely upward from the base portion. .

This tongue piece is usually formed as a cantilever having a fixed end on which the mating surface side (front side) of the receiving portion with the mating tab terminal is integrated with the base portion and a rear end thereof as a free end. When the mating tab terminal is inserted into the receiving part, the tongue piece is pushed down and elastically deforms, and the reaction force of the tongue causes the contact part (called a pressing part) with the mating tab terminal to move the mating tab terminal above the base part. It is pressed against the portion of the contact, thereby obtaining electrical contact with the mating tab terminal, and maintaining the contact state (fitting state).

In order to more securely maintain the mating state of the tongue piece of the receptacle terminal with the mating tab terminal, the mating tab terminal is formed with the mating tab terminal when the mating tab terminal is received in the receiving portion. In order to release the engagement, if necessary, the structure provided with an engaging portion that engages with the hole,
There is a case in which an operating portion extending outside the receiving portion is provided that receives an operating force for pushing the engaging portion downward and releasing the engagement between the both.

The engaging portion is cut and raised from the tongue (for example, Japanese Examined Patent Publication No. 55-11269) or a projection such as a dimple formed by plastically deforming the tongue from the lower surface of the tongue (for example, Japanese Patent Laid-Open No. 64-5756) is known.

[0006]

By the way, the operating portion formed on the tongue piece is cut and raised from the base as a part of the tongue piece, as shown in the above-mentioned Japanese Patent Laid-Open No. 64-5756. It is generally formed by cutting and raising a tongue piece in its extending direction and then bending the free end side of the tongue piece that has been cut and raised (see FIG. 5).

That is, in order to provide such an operating portion, it is necessary to cut out the tongue, and the extension of the tongue for forming the operating portion (the length a shown in FIG. 5B) is This directly affects the length of the terminal, and there is a problem that the terminal becomes long.

Further, the engaging portion formed on the tongue includes the one cut and raised from the tongue (engaging piece) and the one formed in the dimple shape (engaging protrusion) as described above. ,
For example, the engaging piece can be inserted without resistance when inserting the tab terminal, and is locked when pulling out the tab terminal. It is formed as a cantilever having a fixed end integrated with the tongue piece on the mating surface side (front side) with the mating tab terminal and a free end behind the tongue piece.

The engaging piece is formed so that its width d (see FIG. 5 (1)) is relatively wide so that the engaging piece is not easily deformed even when a certain pulling force is applied, and the pulling load is extremely large. It was necessary to prevent concentration in a narrow area.

However, when the engaging piece is formed wide in this way, the edge of the engaging hole of the tab terminal is formed by simply swinging the tab terminal in the direction of the arrow as shown in FIG. There is a problem that the engagement piece is pushed up to the side edge, and as a result, the engagement piece is pushed down, and the engagement piece of the receptacle terminal and the engagement hole of the tab terminal are disengaged.

Further, even in the case where the dimple-shaped engaging protrusion is formed as the engaging portion, the edge of the engaging protrusion is blunt, so that the edge portion of the engaging hole of the tab terminal easily rides there, and as a result, the engaging protrusion. However, there is a problem in that the engagement protrusion of the receptacle terminal and the engagement hole of the tab terminal are disengaged from each other by being pushed down.

The first object of the present invention has been made in view of the above circumstances, and the operating portion for releasing the engagement with the tab terminal which is a mating partner has a longer terminal length. It is an object of the present invention to provide a receptacle electric terminal formed so as not to do so.

The second object of the present invention has been made in view of the above circumstances, and it is possible to pull out the tab terminal without easily releasing the engagement with the tab terminal which is a mating partner. An object of the present invention is to provide a receptacle electric terminal provided with an engaging portion having sufficient strength against a force in a direction.

[0014]

According to a first aspect of the present invention, a portion serving as an operating portion which is a part of a tongue piece for releasing engagement with a mating tab terminal is provided in a mating tab terminal insertion direction. By forming by cutting and raising from a direction substantially orthogonal to the insertion direction instead of cutting and raising from the parallel direction, the length of the tongue in the insertion direction (a shown in FIG. 5 (2)) is made larger than that of the conventional one. It shortens the overall length of the terminal.

That is, according to the first invention of the present application, as described in claim 1, the mating tab terminal is formed by the base portion, the pair of side walls rising from both sides of the base portion, and the portion of the side wall that is wound above the base portion. A portion in which the receiving tab portion is formed and is cut and raised obliquely upward from the base portion so as to extend in a direction in which the mating tab terminal of the base portion is inserted, and a portion in which the mating tab terminal is wound above the base portion. A pressing portion that presses against the engaging tab, an engaging portion that engages with the mating tab terminal, and an operating force by an external operation that pushes the engaging portion downward to extend the outside of the receiving portion that releases the engagement. In a receptacle electrical terminal having a tongue piece formed with an operating portion, the operating portion is formed by cutting and raising from a direction substantially orthogonal to the insertion direction. A.

According to a second aspect of the present invention, the engaging portion that engages with the mating tab terminal is not cut and raised from a direction parallel to the mating tab terminal insertion direction, but from a direction substantially orthogonal to the insertion direction. By forming by cutting and raising, the width that engages with the engaging hole of the mating tab terminal is only the plate pressure of the tongue piece, so it is more polar than the conventional one (d shown in FIG. 5 (1)). Even if the engaging tab comes into contact with the engaging hole in a narrow range and the mating tab terminal swings, the engaging hole does not ride on the side edge of the engaging portion, and the possibility of accidentally releasing the engagement is extremely high. Can be low.

Further, since the engaging portion is formed by cutting and raising it in a direction substantially orthogonal to the method of inserting the mating tab terminal, that is, from the side, the fixed end extends in the inserting direction (longitudinal direction), The resistance against the pulling force in the insertion direction can be made extremely high.

That is, according to the second invention of the present application, as described in claim 2, the mating tab terminal is constituted by the base portion, the pair of side walls rising from both sides of the base portion, and the portion of the side wall which is wound above the base portion. A receiving portion is formed and is cut and raised obliquely upward from the base portion so as to extend in a direction of inserting the mating tab terminal of the base portion, and the mating tab terminal is wound above the base portion. In a receptacle electrical terminal having a tongue formed with a pressing portion that presses against a portion and an engaging portion that engages with an engaging hole provided in the mating tab terminal, the engaging portion is substantially orthogonal to the insertion direction. It is characterized in that it is formed by cutting and raising from the direction.

[0019]

According to the first invention of the present application, the portion which becomes the operation portion which is a part of the tongue piece for releasing the engagement with the mating tab terminal is in the insertion direction of the mating tab terminal. Since it is formed by cutting and raising from a direction that is substantially orthogonal, that is, from the side of the terminal, the length in the insertion direction that cuts and raises the tongue can be shortened compared to the conventional one, thus shortening the overall length of the terminal can do.

Further, according to the second aspect of the present invention, the engaging portion that engages with the mating tab terminal is formed by cutting and raising from a direction substantially orthogonal to the inserting direction of the mating tab terminal. The engaging hole of the mating tab terminal has a width corresponding to the plate thickness of the tongue piece. Therefore, even if the mating tab terminal is swung and the mating tab terminal swings, the engagement of the tongue piece is prevented. The end edge of the joint hole does not ride on the side end edge of the engaging portion, so that it is also possible to prevent the engagement between the two from being accidentally released by the swinging.

Further, since the engaging portion is formed by cutting and raising it from the side, the fixed end thereof extends in the inserting direction, and the reaction force against the pulling force in the inserting direction is extremely high, and the engaging portion can be deformed by this pulling force. Absent.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the receptacle electrical terminal of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view, a front view, and a sectional view of an essential part showing an embodiment of a receptacle electric terminal (hereinafter referred to as a receptacle terminal in the present invention) 10 of the present invention. The illustrated receptacle terminal 10 is integrally molded by punching out from a single metal flat plate, and a pair of side walls 12 are raised from both sides of a base portion 11 serving as a bottom plate, and the side wall 12 has a free end 12a side. Is bent above the base 11 so as to be rolled inward, and is shaped to have a substantially rectangular cross section. The portion of the side wall 12 on the side of the rolled free end 12a is substantially parallel to the base portion 11, and the space surrounded by the parallel portion, the base portion 11 and the side walls 12 is a mating partner. The receiving portion 16 which is a tab terminal is configured. Further, a bead 12b is provided at a portion of the side wall 12 near the free end 12a so as to abut the upper surface of the tab terminal which is a mating partner.

A tongue piece 13 extending from the base 11 in the insertion direction of the mating tab terminal into the receiving portion 16 is cut and raised. This tongue piece 13 has a fixed end 13 whose front end (fitting side) is integrated with the base 11.
a, the rear end is formed as a cantilever having a free end 13b which is upwardly separated from the base 11.

More specifically, the tongue piece 13 is fitted with a mating tab terminal and a pressing portion 13c that presses the mating tab terminal from below to press the mating tab terminal upward against the bead 12b of the side wall 12. In the state, the engaging piece 13d is inserted through the engaging hole provided in the tab terminal and engaged, and the free end 13b.
On the side, an operating portion 13e extending to the outside of the receiving portion 16 and receiving an operating force for releasing the engagement by pushing down the engaging piece 13d to disengage the engaging piece 13d from the engaging hole of the tab terminal. And are formed.

Here, both the operating portion 13e and the engaging piece 13d are formed by cutting and raising the tongue piece 13 from a direction substantially orthogonal to the inserting direction of the mating tab terminal.

The edge of the engaging piece 13d which comes into contact with the edge of the engaging hole of the mating tab terminal when a load is applied to pull out the mating tab terminal in the direction of pulling out the mating tab terminal (opposite direction of the arrow) is the tongue. An angle θ (θ is an acute angle) is formed with respect to the surface of the piece 13. This prevents the tongue piece 13 from being pushed down by the component force even when the pulling force is applied.

A bead 13f is formed at the cut-and-raised root of the operating portion 13e to prevent the operating portion 13e from being deformed by a strong force acting on the operating portion 13e.

The free ends 12a caught on the side walls 12
An anti-overstress stopper piece 12d, which is bent and provided directly above, prevents the free end 12a from being excessively pressed upward to be plastically deformed.

A barrel 14 for crimping and fixing the electric wire and a barrel 15 for crimping and fixing the electric wire as coated are formed on the side (rear side) opposite to the fitting surface side of the base portion 11. There is.

Next, the operation of the receptacle terminal 10 of the embodiment shown in FIG. 1 will be described.

A tab terminal, which is a mating partner, which is indicated by an alternate long and two short dashes line from the direction of the arrow, is inserted into the receiving portion 16 of the receptacle terminal 10. A guide portion 12c is provided on the mating side surface of the receptacle terminal 10 so as to relatively easily insert the tab terminal, and the tab terminal is easily attached to the receptacle portion of the receptacle terminal 10.
16 is inserted.

The tab terminal inserted into the receiving portion 16 rides on the engaging piece 13d of the tongue piece 13 as the insertion proceeds, and the tongue piece 13 is pushed down by the reaction force.

When the insertion is further advanced and the engaging hole of the tab terminal reaches the position facing the engaging piece 13d of the tongue piece 13, the engaging piece
Since the pressing force acting on 13d disappears, the tongue piece 13 is displaced upward by elastic force so as to return to its original position, and the engaging piece 13d engages with the engaging hole of the tab terminal. As a result, the tab terminal is locked to the receptacle terminal 10 and prevents the locked state from being easily released.

The receptacle terminal 10 includes a bead 12b near the free ends 12a of the side walls 12 and a pressing portion 13c of the tongue piece 13.
Touch the tab terminal with. Here, the pressing portion 13c presses the substantially central portion of the tab terminal upward by elastic force, and the bead 12b forms the side wall 12.
The elastic force pushes the vicinity of both side portions of the tab terminal downward with the elastic force, so that the contact pressure becomes extremely high and the electrical contact between both terminals is further ensured.

Here, the receptacle terminal 10 of the present embodiment.
According to this, since the operating portion 13e which is a part of the tongue piece 13 is formed by being cut and raised from a direction substantially orthogonal to the insertion direction of the mating tab terminal, that is, from the side of the terminal, the tongue piece 13 is formed.
It is possible to shorten the length of the board 11 in the insertion direction required to cut and raise the terminal 11 as compared with the conventional one, that is, to cut and raise it along the insertion direction of the mating tab terminal, thus shortening the overall length of the terminal. can do.

Further, according to the receptacle terminal 10 of the present embodiment, the engaging piece 13d is formed by cutting and raising from the direction substantially orthogonal to the inserting direction of the mating tab terminal, so that the mating tab terminal The width of the tongue 13 is the width of the tongue 13 (= the thickness of the substrate 11), so that it engages with the tab terminal engagement hole in a very narrow range and the mating tab terminal swings. However, the edge of the engagement hole does not ride on the side edge of the engagement piece 13d, and therefore the engagement between the two is not accidentally released by the swinging. Moreover, this engaging piece 13d
Since it is formed by cutting and raising from the side, the fixed end cut and raised extends in the insertion direction, and the resistance against the withdrawal force in the insertion direction becomes extremely high. Also, it is not easily deformed by the pulling force.

When the terminals thus fitted are separated from each other as necessary, the operation portion 13b provided on the side of the free end 13b of the tongue piece 13 is pressed downward by hanging a finger or the like. The entire tongue piece 13 is elastically deformed, whereby the engaging piece 13d is disengaged downward from the engaging hole of the tab terminal, and the tab terminal may be pulled out from the receptacle terminal 10 in the meantime.

FIG. 2 is a plan view, a front view, a side view, and a sectional view of an essential part showing a receptacle terminal 10 according to a second embodiment of the present invention. The illustrated receptacle terminal 30 is composed of a terminal main body 30 and a cover 40, and the cover 40 covers the entire side wall 32 to protect the contact portion with the tab terminal and a receiving portion 36 for receiving the mating tab terminal. It is molded so as to cover a portion other than the opening of the fitting side surface of and is fixed to the terminal main body portion 30 by a fixing claw 32e extending from the side wall 32.

The structure of the terminal body 30 is the receptacle terminal of the embodiment shown in FIG. 1 (referred to as the first embodiment).
Basically the same as 10, but the free end 32a of the side wall 32 corresponding to the side wall 12 of the first embodiment is formed by being wound above the base 31 and then being bent toward the widthwise center of the base 31. The difference is that it is different from that of the first embodiment. Further, a fixing claw for fixing the cover part 40 is provided by extending a part of the part bent so as to be rolled up above the base part 31 along the raised part of the side wall 32 to fix the cover part 40. 32e
It is formed as. Furthermore, the receptacle terminal 30 of the present embodiment is different from that of the first embodiment in that the direction of the electric wire led out from the terminal is formed so as to be substantially orthogonal to the insertion / removal direction of the mating terminal.

Other parts such as the tongue piece 33 and the engaging piece 33
Regarding the d and the operating portion 33e, the configuration, action and effect are the same as the tongue piece 13, the engaging piece 13d and the operating portion 13e of the receptacle terminal 10 shown in the first embodiment.

That is, the operating portion 33e which is a part of the tongue piece 33
Is formed by cutting and raising from a direction substantially orthogonal to the inserting direction of the mating tab terminal, so that the length of the board 31 in the inserting direction necessary for cutting and raising the tongue piece 33 is the conventional one,
That is, it is possible to shorten the length of the mating tab terminal as compared with the lengthwise cut and cut along the insertion direction of the mating tab terminal, so that the length of the entire terminal can be shortened.

Further, since the engaging piece 33d is formed by cutting and raising from the direction substantially orthogonal to the inserting direction of the mating tab terminal, the tongue piece engages with the engaging hole of the mating tab terminal. The width is equal to the plate thickness of 33 (= the plate thickness of the substrate 31). Therefore, even if the mating tab terminal swings in the extremely narrow range and the mating tab terminal swings, the edge of the mating hole remains The engagement piece 33d does not ride on the side edge of the engagement piece 33d, and therefore the engagement of the engagement piece 33d and the engagement edge 33d is not accidentally released by the swinging. Moreover, since the engagement piece 33d is formed by cutting and raising from the side, the cut and raised fixed end extends in the insertion direction, and the resistance against the pulling force in the insertion direction becomes extremely high. Even if the width is narrow, it is not easily deformed by the pulling force.

Incidentally, the receptacle terminal 30 of the present embodiment
Since the lead wire (electric wire) is drawn out in a direction substantially perpendicular to the engaging direction with the tab terminal, the arrangement of the barrels 34 and 35 is different from the arrangement direction of the barrels 14 and 15 in the first embodiment. Is different. As a result, in the present embodiment, a region for obtaining the crimping piece 34a for crimping the wire of the barrel 34 is required behind the operating portion 33e, but the length of the crimping piece 34a is the same as that of the operating portion 33e. Since the length is extremely short as compared with the length, the entire length of the receptacle terminal having such a crimping piece 34a can be shortened.

FIG. 3 is a plan view, a front view, a side view, and a sectional view of an essential part showing a receptacle terminal 10 according to a third embodiment of the present invention. In the illustrated receptacle terminal 10, the terminal main body portion and the cover portion are integrally configured. That is, the portion 12f corresponding to the cover portion that covers the upper portion of the base portion 11 has the side walls 12.1.
It is constructed by extending one side wall 12 of 2'to the side wall 12 'of the other side. And the other side wall 12 '
The end face of the folded back free end 12j 'comes into contact with the free end 12j of the one side wall 12 extended to the other side wall 12' to prevent the free end 12j from floating upward. It has a structure.

The portion 12f corresponding to this cover portion
Is a folded-back portion 12h extending in the direction of mating with the mating tab terminal.
The folded portion 12h is folded back inside the receiving portion 16 to form a contact portion with the tab terminal.

Further, a part of a portion of the portion 12f corresponding to the cover portion facing the folded-back portion 12h is plastically worked so as to be convex toward the folded-back portion 12h, and a stopper for anti-overstress on the folded-back portion 12h. Acts as 12g.

Furthermore, the portion 12f corresponding to the cover portion
Has a rear edge extending rearward of the operating portion 13e, and therefore has a notch 12k for preventing interference with the operating portion 13e, and the operating portion 13e defines a space formed by the notch 12k. Is configured to pass. By doing so, even when an excessive impact force in the lateral direction (width direction) is applied to the operating portion 13e, the operating portion 13e
Only the part of the protrusion e protruding above the part 12f corresponding to the cover part is damaged, and the damage of the operation part 13e can be minimized.

However, the portion 12f corresponding to this cover portion
Is not limited to the one that extends rearward of the operation portion 13e as in this embodiment, and may have a structure in which the rear edge does not reach the operation portion 13e as shown in FIG. 4, for example.

As for the characteristic portion of the receptacle terminal of the present invention, that is, the engaging piece 13d and the operating portion 13e in the present embodiment, the engaging piece 13d and the operating portion 13e of the receptacle terminal 10 shown in the first embodiment. Since the configuration, action, and effect are the same, the description thereof will be omitted.

[Brief description of drawings]

FIG. 1 is a view showing a receptacle terminal of a first embodiment of the present invention, (1) a plan view, (2) a front view, (3) a cross-sectional view showing a cross section taken along the line AA in (1), (4) ) A sectional view showing a section taken along line BB in (1), and (5) C in (1)
-C sectional view showing a cross section

FIG. 2 is a view showing a receptacle terminal of a second embodiment of the present invention, (1) a plan view, (2) a side view, (3) a front view,
(4) A sectional view showing a section taken along line AA in (1),
(5) A sectional view showing a section taken along line BB in (1),
(6) A sectional view showing a section taken along line C-C in (2),
(7) Sectional drawing showing the DD cross section in (6),
(8) Sectional drawing showing the EE line cross section in (6).

FIG. 3 is a diagram showing a receptacle terminal of a third embodiment of the present invention, (1) a plan view, (2) a side view, (3) a front view,
(4) Sectional drawing showing the AA line cross section in (1).

FIG. 4 is a view showing a receptacle terminal of a similar form to the third embodiment of the present invention, (1) a plan view, (2) a side view,
(3) Front view, (4) A cross-sectional view showing a cross section taken along line AA in (1)

FIG. 5 is a view showing a conventional receptacle terminal, (1) a plan view, and (2) a cross-sectional view showing a cross section taken along line I-I in (1).

FIG. 6 is a partially enlarged view for explaining that the engagement between the engagement piece and the engagement hole of the tab terminal is released by swinging the tab terminal, (1) a plan view, (2) (1) ) II-II
Cross section showing line cross section

[Explanation of symbols]

 10 Receptacle (electrical) terminal 11 Base 12 Side wall 12a Free end 13 Tongue 13c Pressing 13d Engaging 13e Operating part

Claims (2)

[Claims] 1. A base portion, a pair of side walls rising from both sides of the base portion, and portions of the both side walls that are wound above the base portion form a receiving portion for receiving a mating tab terminal. Engage the mating tab terminal with a pressing portion that is cut and raised obliquely upward from the base so as to extend in the direction in which the mating tab terminal is inserted and that presses the mating tab terminal to a portion that is rolled up above the base. Receptacle electric having a tongue formed with an engaging portion and an operating portion extending to the outside of the receiving portion for releasing the engagement by pressing the engaging portion downward by receiving an operation force from an operation from the outside. In the terminal, the receptacle electrical terminal is formed by cutting and raising the operation portion from a direction substantially orthogonal to the insertion direction. 2. A base portion, a pair of side walls standing up from both sides of the base portion, and portions of the both side walls that are wound above the base portion form a receiving portion for receiving a mating tab terminal, and the base portion has the above-mentioned structure. Provided on the mating tab terminal and a pressing portion, which is cut and raised obliquely upward from the base portion so as to extend in a direction in which the mating tab terminal is inserted, and which presses the mating tab terminal to a portion wound above the base portion. In a receptacle electrical terminal having a tongue formed with an engaging portion that engages with an engaging hole, the engaging portion is formed by cutting and raising from a direction substantially orthogonal to the insertion direction. Receptacle electrical terminal.