JPH09326270A - Terminal for connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the terminal small with stable, high contact reliability. SOLUTION: Free end edge parts of both side plates 28a, 28b continued to the bottom plate 27 are bent inward to form in a square pillar, the free end edge parts are bent in the square pillar to form contact plates 32a, 32b, and almost U-shaped notches 35a, 35b which accept other terminal for a connector for fitting and connecting are formed in the contact plates 32a, 32b. Since the contact plates 32a, 32b are arranged in a box-shaped part, the deformation of the contact plates 32a, 32b are prevented by the outside box-shaped part, and since the U-shaped notches 35a, 35b are formed by punching with a metal mold, dimensional stability is enhanced and high energizing force in the plate thickness direction can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness, for example, between wires, and a wire and a PCB.
A terminal for a connector that electrically connects the (Printed Circuit Board) etc. to each other by fitting a terminal mounted on a housing and another terminal mounted on another housing into a pressure contact is there.

[0002]

2. Description of the Related Art Conventionally, a male connector having a plurality of male terminals arranged in a housing and a female connector having a plurality of female terminals arranged in another housing are inserted and fitted to each male terminal. By electrically connecting each female terminal to each other, it is possible to collectively and accurately connect, for example, between wires in a vehicle-mounted wire harness or between wires and a circuit board of a device.

FIG. 17 is a diagram showing the structure of a conventional female connector terminal. (A) is a top view thereof, (b) is a side view including the AA 'cross section of (a), and (c) its front view. Is.

In FIGS. 17 (a) to 17 (c), the female connector terminal 1 is formed by punching a sheet of a conductive metal plate into a predetermined shape using a die and bending it. Bellows type connection part 2
And a rear electric wire crimping portion 3. The wire crimping portion 3 is provided with a core wire crimping portion 4 and a covering crimping portion 5 of the electric wire, and the core wire and the covering portion of the electric wire are respectively put into the U-shaped portions having different heights and crimped.

Further, the bellows type connecting portion 2 includes a bottom plate 6 as a substrate and both side plates 7a and 7a connected to the left and right sides thereof.
b and the tops of these side plates 7a, 7b are folded inwardly and are surrounded by top plates 8a, 8b which are stacked one above the other in a substantially rectangular tubular box shape, and inside thereof,
The tip portion is provided as the movable contact piece 9 by folding back from the bottom plate 6. The movable contact piece 9 has a folded portion 1
0 and a free end 11 are formed in a mountain shape, and a contact part 12 that comes into contact with the male connector terminal is provided at the center of the top so as to project slightly, and the free end is provided. The portion 11 contacts the bottom plate 6 so as to be slidable in the front-rear direction.

Further, at a substantially central portion of the bottom plate 6, a locking portion 13 in which a tip portion which is cut out in a substantially U shape is bent downward at a predetermined angle is supported by a cantilever with a spring property. It is set up.

With this structure, as shown in FIG. 18, when the tip of the box-shaped female connector terminal 1 to which the electric wire is crimped is inserted from the rear of the female housing 14, the locking portion 13 of the female connector terminal 1 is inserted. After being bent inward when it is inserted into the female housing 14, it is engaged with the female housing 14 and is fixed as a retainer for the female connector terminal 1. In this way, the male connector 16 to which the plurality of pin-shaped male connector terminals 15 are fixed is inserted and fitted to the female connector in which the plurality of female connector terminals 1 are fixed in the female housing 14. The female connector terminals 1 and the male connector terminals 15 are collectively connected line by line.

At this time, as shown in FIG. 19, the tip of the pin-shaped male connector terminal 15 is inserted from the tip opening 17 of the female connector terminal 1, and the male connector terminal 15 is moved to the movable contact piece 9. When the movable contact piece 9 is held between the movable contact piece 9 and the top plate 8a by an upward urging force, it is electrically connected via the contact portion 12 of the movable contact piece 9 and the top plate 8a. .

[0009]

In the above-mentioned conventional female connector terminal, since the movable contact piece 9 is provided inside the box, the movable contact piece 9 is deformed by an external force or an electric wire crimping. It is difficult to do so, and from that point of view, good contact reliability can be maintained, but since the movable contact piece 9 is bent, the tip of the male connector terminal 15 is sandwiched between the movable contact pieces 9. The manufacturing tolerance in the distance between the top plate 8a and the top plate 8a is large. Therefore, the movable contact piece 9 and the top plate 8 for the male connector terminal 15 are
There is a problem that the contact pressure of a also greatly varies, and the contact reliability may be impaired.

In order to reduce the size of the female connector terminal 1, since the movable contact piece 9 is bent, the bending direction of the female connector terminal 1 can be reduced. It is difficult, and if an attempt is made to reduce the size of the female connector terminal 1 in the width direction, the width dimension of the movable contact piece 9 also becomes smaller, and the male connector terminal 1 becomes smaller.
There was a problem that sufficient contact pressure with No. 5 could not be obtained and the contact reliability was impaired.

The present invention solves the above problems, and an object of the present invention is to provide a connector terminal which can be miniaturized and can obtain stable and good contact reliability.

[0012]

SUMMARY OF THE INVENTION A connector terminal of the present invention is a connector terminal which is fitted and pressure-contacted with another connector terminal for electrical connection, and each free end edge portion of both side plates connected to the substrate. Are formed in a rectangular tube shape by bending each other inward, and at least one of the free end edges is bent in the square tube, and the free end edge bent in the square tube is It is characterized in that a notch portion is provided which can receive another connector terminal so as to press-fit the other connector terminal.

With this structure, since the free end edge portion having the cutout portion as the connecting portion is arranged in the rectangular tubular portion, the actual contact portion is deformed by the outer box-shaped portion. It can be prevented, and stable and good contact reliability is maintained. In addition, since the notch that is this contact part can be molded by punching the mold, it has much higher dimensional stability than the conventional bending process, and it is easy to obtain the target size. It is possible to obtain more stable and good contact reliability, and it is possible to set the size of the terminal in the height direction to be small, and it is not the conventional biasing force in the surface direction but the plate thickness. A strong urging force in the direction can be obtained, and it is possible to set a small size in the width direction of the terminal as well as good contact reliability. With such miniaturization of the terminal, stable and good contact reliability can always be obtained.

Further, the connector terminal of the present invention comprises:
In a connector terminal that is electrically connected by press-fitting with another connector terminal, the long free edge of one side plate of both side plates connected to the board is bent inward and the other side plate has a short free end. The end edge part should be folded inward in a closely contacted state to form a tubular shape, and this long free end part should be provided with a cutout part that can receive another connector terminal for press-fitting. It is characterized by.

With this structure, the short free end edge portion of the other side plate is bent so as to be folded inward in a closely contacted state, and a long cutout portion is formed as a contact portion with another connector terminal. Since the free end edge can be bent in a rounded shape with one piece, it is easier to bend without having to align both notches with high dimensional stability by punching the notch mold. Become,
More stable and good contact reliability can be obtained.
Further, even if the size of the terminal in the width direction is reduced, a strong biasing force in the plate thickness direction can be obtained. Further, the terminal is prevented from being deformed by the box-shaped portion outside the contact portion in which the cutout portion is formed, and stable and good contact reliability is maintained.

Further, preferably, in the connector terminal of the present invention, a predetermined gap is provided between the free end edge portion bent in the rectangular tube and the substrate.

With this structure, if a predetermined gap is provided between the free end edge portion bent in the rectangular tube and the substrate, the free end edge portion having the cutout portion is cut by inserting another connector terminal. The notched portion will not open more than a predetermined size and will not be plastically deformed, and stable contact reliability can always be obtained.

Furthermore, it is preferable that the connector terminal of the present invention is connected to the substrate and both side plates before and after the rectangular tubular part, and the free end edges of the connected side plates are bent inward to each other. Each of the rectangular tubular portions is provided.

With this structure, if another rectangular tubular portion is provided before and after the rectangular tubular portion having the connecting portion, the connecting portion is not easily deformed by an external force or a crimping of an electric wire, which is preferable. Therefore, it is possible to maintain stable contact reliability.

Further, preferably, in the connector terminal of the present invention, a projection extending forward from at least one side of the front end portion of another square tubular portion at the front is connected.

With this structure, if a projection is provided at the front tip of another square tubular section at the front and the projection is received by the receiving portion of the housing, the tip of the connector terminal of the present invention. Is fixed at a predetermined position, and the connector terminal of the present invention can receive another connector terminal in a good posture without tilting in the housing. It is possible to maintain good contact reliability without deforming the terminal.

Further, preferably, in the connector terminal of the present invention, a notch is formed by bending one side of the front end portion of the other square tubular portion in the front side to the inside of the other square tubular portion. A guide is provided to guide the department.

With this structure, if a bent guide portion is provided inside the other square tubular portion in the front, it is possible to prevent another connector terminal from directly hitting the edge of the connecting portion having the cutout portion. It is possible to prevent the deformation of the lever and to easily guide the other connector terminal to the press-fitting state by fitting into the notch.

Further, preferably, in the connector terminal of the present invention, at least one of an engaging piece with the housing and a reverse insertion preventing piece is provided on the upper wall formed in a tubular shape.

According to this structure, if the locking piece for engaging with the housing and the reverse insertion preventing piece are formed on the upper wall portion which is bent from the substrate to both side plates and is further bent inward to form a tubular shape, the end edge is formed. Since it is sufficient to cut and raise from the portion, the processing is easy and the dimensional stability can be easily secured.

Further, preferably, in the connector terminal of the present invention, the free end edge portion in which the cutout portion is formed is made thinner toward the tip end portion.

With this structure, if the free end edge portion as the contact is made thinner toward the tip end portion, stress is not applied only to the root portion of the notch portion, and the tip end portion of the free end edge portion is applied. Gradually bending, the stress is relaxed as a whole, and there is a margin in the amount of bending for plastic deformation.
Better contact stability will be obtained.

Further, preferably, in the connector terminal of the present invention, a predetermined gap is provided between the tip end portion which is cut and raised from the substrate and the free end edge portion where the cutout portion is formed. ing.

With this configuration, since the stopper member is cut and raised inward from the base plate with a predetermined gap below the free edge portion where the notch is formed, the free edge portion is provided. Excessive bending of the part is prevented, and plastic deformation does not occur.

Further, in the connector terminal of the present invention, preferably, there is a predetermined gap between the tip portions cut and raised inward from opposite positions of the both side plates connected to the board, and between the tip portions, A free end edge portion having the cutout portion is disposed so as to be swingable in a bending direction.

With this structure, the free end edge portion having the cutout portion is guided from both the left and right sides, so that the free end edge portion is prevented from being deformed in the left-right direction.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a connector terminal according to the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
It is a diagram showing a configuration of a terminal for a female connector showing
1A is a top view thereof, and FIG. 1B is a side view including a cross section taken along line BB ′ of FIG. 2 (a) is a front view of the female connector terminal of FIG. 1, and FIG. 2 (b) is FIG.
It is sectional drawing of CC 'line of (a).

1A, 1B and 2A,
In (b), the female connector terminal 21 is formed by punching a single conductive metal plate made of brass, spring phosphor bronze, or the like into a predetermined shape using a die, and bending the front end of the female connector terminal 21. It is composed of a connecting portion 22 and a rear wire crimping portion 23. The electric wire crimping portion 23 is provided with a core wire crimping portion 24 and a covering crimping portion 25 of the electric wire side by side. The core wire portion and the covering portion of the electric wire are respectively put in U-shaped cross sections having different heights and crimped respectively. Has been done.

Notches 26a and 26b are formed at the front and rear of the upper surface of the connecting portion 22, respectively.
The connecting portion 2 is formed by these cut portions 26a and 26b.
2 is divided into a front part, a central part and a rear part. In the front part, the center part and the rear part of the connection part 22,
A bottom plate 27 as a substrate and two side plates 2 on both left and right sides thereof.
8a and 28b are disposed, and at the front and rear portions of the connecting portion 22, the upper portions of the both side plates 28a and 28b are bent inwardly and overlapped with each other to form a top plate 2.
9a, 29b and top plates 30a, 30b are formed, and in the central portion of the connecting portion 22, both side plates 28a, 28a,
After the upper portions of 28b are bent inward with respect to each other, the free end edges are further bent symmetrically downward inward at the center in the width direction from both sides to form rounded top plates 31a, 31b and contact plates 32a, 32b. Has been done.

At the front of the connecting portion 22, the bottom plate 2
7. A terminal which is surrounded by the side plates 28a, 28b and the top plates 29a, 29b and has a substantially rectangular tubular box shape that is open at the front and rear, and which protrudes forward from one side of the front end of the top plate 29b. A holding protrusion 33 is provided. Further, the lower side of the front end portion of the bottom plate 27 is notched on both sides in the width direction, and the cantilever portion between these notched portions is bent to the inside of the rectangular tubular portion to contact the contact plates 32a, 32.
It constitutes a guide member 34 to b.

At the center of the connecting portion 22, the bottom plate 2
7 and side plates 28a, 28b and top plates 31a, 31b are formed into a box-like box having a substantially rectangular tube shape that is open in the front and rear direction, and each contact plate 32a is connected to the rounded top plates 31a, 31b. , 32b are provided so as to hang down. Each of these contact plates 32a, 32b is provided with deep U-shaped notches 35a, 35b that are open to the front, and the inner lower part of the U-shape is in contact with the male connector terminal. Protruding contact portions 36a, 36b
Is provided. The U-shaped notches 35a, 3
5b is formed by punching with a mold, and the manufacturing dimensional tolerance of the notch 35 is small, and the dimensional variation can be made very small. Therefore, it is possible to precisely set the dimensions in the elastic range having the spring property in relation to the opening amount when the male connector terminal is inserted. Thus, the U-shaped notches 35a, 35
The contact plates 32a and 32b having b are substantially tuning fork-shaped. In addition, the bottom ends of the contact plates 32a and 32b and the bottom plate 2
A gap of a predetermined size is set between the upper surface of the contact plate 7 and the upper surface of the contact plate 7, and the U-shaped notches 35a and 35b of the contact plates 32a and 32b can be opened by the size of this gap. On the contrary, since the notches 35a and 35b do not open beyond the size of the gap, it is possible to prevent the plastic deformation of the contact plates 32a and 32b.

Further, at the rear of the connecting portion 22, the bottom plate 2
7, a side plate 28a, 28b and a top plate 30a, 30b are surrounded and opened in the front and back to form a substantially rectangular tubular box shape, whereby the effect of wire crimping in the wire crimping portion 23 is affected by the contact plate 32a, It is difficult to reach 32b.

Further, at the substantially central portion of the bottom plate 27, a terminal fixing engagement portion 37 having a spring property is formed by bending a tip portion, which is cut off in a substantially U shape, at a predetermined angle. It is supported by a cantilever.

The operation of the above structure will be described below.

First, when the tip of the box-shaped female connector terminal 21 to which the electric wire 41 is connected is inserted from the rear of the female housing 42, the locking portion 13 of the female connector terminal 21 bends inward, and As shown in FIGS. 3 and 4, the female connector terminal 21 is fixed by being engaged with the engaging portion 43 of the female housing 42 and preventing the female connector terminal 21 from coming off. At this time, the U-shaped notch portion 35 is positioned such that its open side faces the opening portion 43 of the female housing 42. Also, female connector terminal 2
The projection 33 of the top plate 29b of No. 1 has the female housing 42
Since the female connector terminal 21 of the present invention is inserted and received in the receiving portion 44, the male connector terminal can be received in a good posture without tilting in the female housing 42. Further, the guide member 34 bent inside the rectangular tubular portion guides the male connector terminal from the opening 43 to the lower taper portion 45 of the notch 35, and the lower taper portion is also guided. The tip of the portion 45 is protected from directly hitting. In this way, the plurality of female connector terminals 21 are fixed in the female housing 42 to form the female connector 46.

The male connector 51 is similar to that shown in FIGS.
As shown in FIG. 5, a plurality of pin-shaped male connector terminals 53 each having a quadrangular cross section are arranged and fixed in the male housing 52 at the same pitch as that of the female connector terminals 21. . The tip portion 53a of the male connector terminal 53 is formed in a protruding shape so that the tip portion 53a of the male connector terminal 53 can easily open the opening 43 of the female housing 42.

Next, as shown in FIG. 7, the female connector 46 and the male connector 51 are inserted and fitted into each other, and the tip end portions of the plurality of pin-shaped male connector terminals 53 of the male connector 51 are connected to each other. The female connector terminal 21 is inserted and fitted into the notch 35 through the opening 43. That is, as shown in FIG. 8, the tip portion 53a of the pin-shaped male connector terminal 53 is inserted from the open side of the cutout portion 35 of the female connector terminal 21, and the tip portion 53a of the male connector terminal 53 is It fits in the notch 35 and is pressure-welded. In this state, the tip portion 53a of the male connector terminal 53 is electrically connected via the contact portion 36 of the cutout portion 35.

Female connector terminal 21 of this embodiment
Since the actual contact portion 36 is arranged in the box-shaped portion, the outer box-shaped portion can prevent the actual contact portion 36 from being deformed. Good contact reliability of 21, 53 can be maintained.
In addition, the U-shaped cutout portion 35 that is the actual contact portion 36.
Since it is formed by punching the die, it has much higher dimensional stability than the conventional movable contact piece that is bent, and it is possible to easily obtain the target dimension and obtain stable contact reliability. be able to. In addition, by repeatedly inserting and removing the male connector terminal 53 as in the conventional case,
Since a predetermined gap is set between the U-shaped cutout portion 35 and the bottom plate 27, the lower end of the contact plate 32 having the U-shaped cutout portion 35 may be deformed by opening a predetermined amount or more. However, stable contact reliability can always be obtained. Moreover, since the box-shaped portions are arranged in front of and behind the contact plate 32, the cutout portion 35 of the contact plate 32 is hard to be deformed by an external force or a crimping of an electric wire, so that the male and female connectors can be used. Good contact reliability of the terminals 21 and 53 can be maintained.

Further, in order to reduce the size of the female connector terminal 21 of the present embodiment, the contact plate 32 having the U-shaped notch 35 having the actual contact portion 36 is substantially tuned by punching the die. Since it is formed into a shape, the female connector terminal 21 can be made larger than the conventional bending movable contact piece.
The dimension in the height direction can be set smaller, and since the biasing force in the plate thickness direction is used instead of the biasing force in the surface direction as in the past, the biasing force is sufficiently strong and the female connector terminal 21 A sufficient biasing force can be obtained even if the dimension in the width direction is set smaller. Therefore,
When the width of the movable contact piece is reduced as in the prior art, sufficient contact pressure with the male connector terminal 53 cannot be obtained and the contact reliability is not impaired.
From the above, it is possible to obtain stable and good contact reliability as well as downsizing of the terminal.

(Embodiment 2) In Embodiment 1 described above, the free end edges of both side plates 28a, 28b connected to the bottom plate 27 as a substrate are bent inwardly to form a rectangular tube shape, and each free end is formed. The edges are symmetrically bent together in the lower rectangular tube, and the contact plates 32a, which are the respective free end edges thereof,
The notches 35a, 35b into which the male connector terminal 53 can be inserted and pressure-contacted are formed in the portions 32b, respectively, but in the second embodiment, as shown in FIG. 9, both side plates 62a connected to the bottom plate 61 as a substrate, Each of the free end edges of 62b is bent inwardly to form a box-shaped box shape, and one of the free end edges is bent into the lower rectangular tube, and one piece is bent into the rectangular tube. A notch 63 into which the male connector terminal 53 can be inserted and pressure-contacted at the free end edge of the
May be formed. Otherwise, the first embodiment
Also in this case, the same effects as the stable and good contact reliability and the miniaturization of the terminal can be obtained as in the first embodiment.

(Third Embodiment) In the above-described first embodiment, a terminal fixing member is formed by bending the bottom plate 27 at a substantially central portion with a distal end portion cut away in a substantially U shape at a predetermined angle. The stopper 37 has a spring property and is arranged to be supported in a cantilever manner. However, in the third embodiment, instead of the engaging portion 37, as shown in FIG. A contact plate 7 having a hole 72 in the bottom plate 71 and a cutout 73 similar to the cutouts 35a and 35b in FIG.
At the lower end of 4, there is provided a locking portion 75, which is a projection that is inclined forward and rearward at a right angle, and a lower end 75a of this locking portion 75 projects through the hole 72. This locking part 75
Can be moved back and forth through the hole 72 by the spring property of the base of the contact plate 74 having the cutout portion 73. For example, when the male connector terminal 53 is inserted into the cutout portion 73, the cutout portion 73 is opened, and the lower end portion 75a of the locking portion 75 is further projected through the hole 72 by that amount.
The female housing 76 will be engaged and fixed to a greater extent. That is, when the male connector terminal 53 is not inserted into the cutout portion 73, the lower end portion 75 a of the locking portion 75 slightly protrudes through the hole 72, and therefore, the female housing 76 is inserted into the female housing 76. The insertion and fixing of the female connector terminal 77 becomes light, and the terminal assembling work becomes easy.

(Fourth Embodiment) In the first embodiment, after the upper portions of both side plates 28a, 28b are bent inward at the central portion of the connecting portion 22, they are further symmetrically downward inward at the center in the width direction. Free-end edges are bent from both sides to form rounded top plates 31a and 31b and a contact plate 32.
a, 32b are constituted, and these contact plates 32a, 32b
Each of the other male connector terminals and the male terminal receiving notches capable of press-fitting and fitting are provided so as to match each other. However, bending is performed so that these two notches match. In the fourth embodiment, the long free end edge of one side plate of both side plates connected to the bottom plate as the substrate is bent inward to serve as a contact plate, and the short free end edge of the other side plate is used. This is a case in which the portion is folded inward in a closely contacted state and formed into a cylindrical shape, and a notch portion for receiving a male terminal that can be press-fitted to another male connector terminal is provided at this long free end edge portion. .
In this case, since it is one contact plate, it is not necessary to align the two notches provided in the two contact plates by bending as in the first embodiment, and the bending accuracy is improved. Will be alleviated. In addition, on the top wall of the top plate which is formed in a tubular shape by the bottom plate as a substrate, both side plates and the top plate,
If the engaging piece with the housing and the reverse insertion preventing piece are formed, the process of cutting and raising from the end edge is sufficient, so that the process is easy and the dimensional stability can be easily ensured.

Further, in the fourth embodiment, in order to obtain further contact stability, the contact, which is a free end edge portion in which the cutout portion is formed, is configured so that the tip end portion thereof becomes thinner. This is the case. In this case, another male connector terminal is inserted into the notch, and the contact is bent downward to open the notch larger to accept the male connector terminal. If the child is made thinner toward the tip of the contact, stress is not applied only to the radius of the root of the contact, but is gradually bent from the tip of the contact to relieve stress in the entire contact. As a result, there is a margin in the amount of bending of the contact element with respect to plastic deformation, and better contact stability can be obtained. Further, in order to prevent the contactor from being deformed in the left-right direction, the contactor is regulated so as to be sandwiched at predetermined intervals from the left and right sides in a direction orthogonal to the bending direction of the contactor, and
In order to prevent excessive downward bending of the contactor, a stopper member is arranged below the contactor.

A specific example of the fourth embodiment will be described below in more detail with reference to FIGS. 11 to 15.

FIG. 11 is a perspective view showing the structure of the female connector terminal according to the fourth embodiment of the present invention.
11A is a top view of the female connector terminal of FIG. 11, FIG. 12B is a side view of the female connector terminal of FIG. 11, and FIG. 12C is a front view of the female connector terminal of FIG. 13 is a sectional view of the female connector terminal of FIG. 11 taken along line RR, and FIG. 14 (a) is taken along line S- of FIG.
14 is a sectional view taken along the line S-T of FIG. 13 and FIG. 15 is a sectional view taken along the line U-U of the female connector terminal of FIG.
It is sectional drawing.

In FIGS. 11 to 15, the female connector terminal 81 is made of brass or spring-type phosphor bronze.
The conductive metal plate is punched into a predetermined shape using a die and is bent, and the front connecting portion 8 is formed.
2 and a rear wire pressure contact portion 83. The electric wire pressure contact portion 83 includes an electric wire core wire pressure contact portion 84 and a covering crimp portion 85.
And are provided side by side.

Notches 86a and 86b are formed in the front and rear of the upper surface of the connecting portion 82, respectively.
The connecting portion 8 is formed by these notches 86a and 86b.
2 is divided into a front part, a central part and a rear part. In the front part, the central part and the rear part of the connection part 82,
A bottom plate 87 as a substrate and both side plates 8 on the left and right sides thereof.
8a and 88b are disposed, and at the front and rear portions of the connecting portion 82, the upper portions of both side plates 88a and 88b are bent inwardly and overlapped with each other to form a top plate 8.
9a and 89b and top plates 90a and 90b are configured. As described above, the front portion of the connecting portion 82 is formed into a box-like shape of a substantially rectangular tube which is surrounded by the bottom plate 87, the side plates 88a and 88b, and the top plates 89a and 89b and is open at the front and back. It prevents the contact plate 91 from being deformed. Further, the lower side of the front end portion of the bottom plate 87 is notched on both sides in the width direction, and the cantilever portion between these notched portions is bent to the inside of the rectangular tubular portion to contact the contact plate 91.
The guide member 87a to the notch 93 is formed. Further, at the rear portion of the connecting portion 82, the bottom plate 87 and the side plates 88a, 8
8b and the top plates 90a and 90b, and is opened in the front and rear to be formed into a substantially rectangular tube-like box shape, whereby the electric wire pressure welding at the electric wire pressure welding portion 83 is unlikely to affect the posture of the contact plate 91 and the like. are doing.

In the central portion of the connecting portion 82, the short free end edge of one side plate 88a is folded back so as to be in contact with the lower inner side to form the top plate 92a, and the other side plate 8 is formed.
The long free edge of 8b is bent inward downward to form a rounded top plate 92b and a contact plate 91. Thus, in the central portion of the connecting portion 82, the bottom plate 87 and the side plate 8
It is surrounded by 8a, 88b and top plates 92a, 92b, and is formed in a box-like shape of a substantially rectangular tube opened in the front and rear, and
A contact plate 91 is provided so as to extend from a rounded top plate 92b. The contact plate 91 is provided with a deep U-shaped notch 93 that is open to the front and has a protrusion 94 that contacts the male connector terminal at the inner upper and lower portions of the U-shape. It is provided. The U-shaped notch portion 93 is formed by punching with a mold, and the manufacturing dimensional tolerance of the notch portion 93 is small, and the dimensional variation can be made extremely small. Therefore, it is possible to precisely set the dimensions in the elastic range having the spring property in relation to the opening amount when the male connector terminal is inserted. As described above, the contact plate 91 having the U-shaped notch 93 has an inner shape that is substantially a tuning fork shape and an outer shape that is tapered, so that the flexural stress is made uniform. In addition, a gap of a predetermined size is set between the lower end of the contactor on the lower side of the contact plate 91 and the tip portion 87b that is cut and raised from the bottom plate 87 inward and upward. The U-shaped notch 93 of the plate 91 can be opened. On the contrary, the cutout portion 93 is larger than the size of this gap.
Does not open, the plastic deformation of the lower contactor of the contact plate 91 can be prevented. Furthermore, both side plates 88a,
The tip portions 88c and 88d cut and raised inward from the left-right symmetrical position (opposing position) of 88b form slit portions (guide portions) at predetermined intervals, and the slit portions (guide portions) below the contact plate 91 are formed in the slit portions. The tapered portion of the contact is oscillatably sandwiched at a predetermined interval in the bending direction, and the lateral deformation of the tapered portion is restricted.

Further, at a substantially central portion of the top plate 90b, an engaging portion 95 for fixing the terminal is provided in a cantilevered support state which is cut and raised outward from the end portion at a predetermined angle and has a spring property. . In addition, a reverse insertion preventing piece 96 that is not folded back inward and is still protruding is provided at substantially the center of the top plate 90a.

Therefore, the short free end edge of the other side plate is bent to fold inward in a closely contacted state,
In addition, since the long free end edge where the notch is formed as a contact part with another connector terminal can be bent with a single rounded shape, it is possible to cut the notch with a high die size. With stability, there is no need to align the notches, making bending easier.
More stable and good contact reliability can be obtained. Further, even if the size of the terminal in the width direction is reduced, a strong biasing force in the plate thickness direction can be obtained. Further, the terminal can be prevented from being deformed by the box-shaped portion outside the contact portion where the notch portion is formed, and stable and good contact reliability can be maintained. That is, in the box-type terminal, the first side plate and the tuning fork-type contact portion are connected by the rounded portion, and the top plate of the upper wall of the box portion is formed by this rounded portion, and the bottom plate and the second side plate form the tuning fork. Since it is a terminal that protects the mold contact part, and the free end edge of this second side plate is brought into close contact with it and folded back to form the top plate as the upper wall of the box part,
The connector can be downsized, and the contact reliability can be further improved by increasing the rigidity of the terminal against external force and preventing deformation such as tilting and twisting of the contact.

In the fourth embodiment, the locking piece 95 with the housing and the reverse insertion preventing piece 96 are provided, but either of them may be provided, and as shown in FIG. Locking piece 95 and reverse insertion preventing piece 96
Need not be provided together. In this case, the contact plate 91a
The strength of is improved and it becomes more difficult to deform.

[0058]

As described above, according to the present invention, since the connecting portion having the cutout portion is disposed in the rectangular tubular portion, the outer contact of the box-shaped portion prevents the actual contact portion from being deformed. Therefore, more stable and good contact reliability can be maintained. In addition, since the notch that is this contact part can be molded by punching the mold, it is possible to significantly improve the dimensional stability compared to conventional bending, and to easily obtain the target size. It is possible to obtain more stable and good contact reliability, the size of the terminal in the height direction can be reduced, and the elastic force in the thickness direction is used, so a strong biasing force can be obtained. It is possible to reduce the size of the terminal in the width direction as well as the contact reliability. Therefore, it is possible to obtain a stable and good contact reliability with the miniaturization of the terminal.

Further, the free end edge portion on the short side of the other side plate is bent so as to be folded inward in a state of being closely attached,
In addition, the free end edge on the long side where the notch is used as a contact part with another connector terminal can be bent with a single rounded process, so the notch has a high dimension due to die cutting. In addition to stability, it is not necessary to align the cutouts, the bending process is easier, and more stable and good contact reliability can be obtained. Also,
Even if the size of the terminal in the width direction is reduced, a strong urging force in the plate thickness direction can be obtained, and the terminal is prevented from being deformed by the box-shaped part outside the contact part where the notch is formed. It is possible to maintain stable and good contact reliability.

Further, if a predetermined gap is provided between the substrate and the free end edge bent in the rectangular tube, the connecting portion having the notch on the inner surface of the tuning fork is predetermined by the insertion by another connector terminal. Even if an attempt is made to open beyond the size, it cannot be opened by hitting the substrate, and it is always possible to obtain stable and good contact reliability with a deformation amount within the elastic deformation range.

Further, if another rectangular tubular portion is provided before and after the rectangular tubular portion having the connecting portion, the connecting portion is not easily deformed by an external force or crimping of an electric wire, and is good and stable. It is possible to maintain good contact reliability.

Further, the tip portion of the connector terminal of the present invention is fixed at a predetermined position by the protrusion provided at the front tip portion of another square tubular portion in the front, and the connector terminal of the present invention is inside the housing. Since other connector terminals can be received in a good posture without tilting, the connector terminal of the present invention is not deformed by forcible insertion and the like, and always maintains good and stable contact reliability. be able to.

Further, if a guide portion is provided in another square tubular portion in the front, it is possible to prevent another connector terminal from directly hitting a connecting portion having a notch portion and prevent its deformation.
It is possible to easily guide the other connector terminal to the connection portion and press-fit it to it.

Further, by forming a locking piece for engaging with the housing and a reverse insertion preventing piece on the upper wall portion which is folded back from the substrate to both side plates and further has a cylindrical shape at both end edge portions, it is possible to remove the piece from the end edge portion. Since the cutting and raising process is sufficient, the process is easy and the dimensional stability can be easily secured.

Further, if the free end edge which is the contact is made thinner toward the tip, the stress is not applied only to the root of the notch, but gradually from the tip of the free end. It is possible to bend and relax the stress as a whole, and a margin is given to the amount of bending with respect to the plastic deformation, so that better contact stability can be obtained.

Further, if the stopper member is cut and raised inward from the substrate at a position below the free end edge portion where the notch is formed, with a predetermined gap, the free end edge portion It is possible to prevent excessive bending, and it is possible to prevent deformation of the free end edge portion as the contact portion due to excessive bending.

Further, if the free end edge portion having the cutout portion is restricted from the left and right sides, the free end edge portion as the contact portion can be prevented from being deformed in the left and right direction.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a female connector terminal according to a first embodiment of the present invention, in which FIG.
(B) is a side view including a cross section taken along line BB 'of (a).

2A is a front view of the female connector terminal of FIG. 1, and FIG. 2B is a C of the female connector terminal of FIG. 1A.
It is sectional drawing of a C'line.

3 is a partially cutaway plan view of a female connector in which the female connector terminal of FIG. 1 is incorporated.

4 is a cross-sectional view taken along the line DD 'of FIG.

FIG. 5 is a partially cutaway plan view of a male connector incorporating a male connector terminal.

6 is a cross-sectional view taken along the line EE ′ of FIG.

7 is a sectional view showing a contact state of each terminal when the female connector of FIG. 3 and the male connector of FIG. 5 are inserted and fitted.

8 is a perspective view showing a front end portion of the male connector terminal and a female connector terminal of FIG. 7. FIG.

FIG. 9 is a perspective view showing a configuration of a female connector terminal according to the second embodiment of the present invention.

FIG. 10 is a sectional view of the female connector showing the configuration of the female connector terminal according to the third embodiment of the present invention.

FIG. 11 is a perspective view showing a configuration of a female connector terminal showing a fourth embodiment of the present invention.

12A is a top view of the female connector terminal of FIG. 11, FIG. 12B is a side view of the female connector terminal of FIG. 11, and FIG. 12C is a front view of the female connector terminal of FIG. .

13 is a cross-sectional view of the female connector terminal of FIG. 11 taken along line RR.

14A is a sectional view taken along line S-S of FIG. 13, and FIG. 14B is a sectional view taken along line T-T of FIG.

15 is a UU cross-sectional view of the female connector terminal of FIG.

16 is a perspective view showing a sectional configuration example different from the RR sectional configuration example in FIG.

FIG. 17 is a diagram showing a configuration of a conventional female connector terminal, (a) is a top view thereof, and (b) is A of (a).
It is a side view including the section of the A'line, and (c) The front view.

FIG. 18 is a perspective view showing the assembling direction of the female connector terminal of FIG. 17 and showing a female connector and a male connector into which the female connector terminal is incorporated.

19 is a perspective view showing a front end portion of the male connector terminal and a female connector terminal of FIG. 18. FIG.

[Explanation of symbols]

21, 77, 81 Female connector terminal 22 Connection part 27, 61, 71, 87 Bottom plate (substrate) 28a, 28b, 62a, 62b, 88a, 88b
Side plates 29a, 29b, 30a, 30b, 31a, 31b, 8
9a, 89b, 90a, 90b, 92a, 92b Top plate 32a, 32b, 32, 74, 91, 91a Contact plate 33, 94 Projection part 34, 87a Guide member 35a, 35b, 35, 63a, 63b, 73, 93
Notch portion 36a, 36b, 36 Contact portion 42, 76 Female housing 44 Receiving portion 46 Female connector 51 Male connector 52 Male housing 53 Male connector terminal 87b, 88c, 88d Tip portion 95 Locking portion 96 Reverse insertion preventing piece

Claims (10)

[Claims] 1. In a connector terminal which is fitted and pressure-contacted with another connector terminal for electrical connection, the free end edges of both side plates connected to the substrate are bent inward to form a rectangular tube shape. At the same time, at least one of the free edge portions is formed by bending the inside of the rectangular tube,
A connector terminal, characterized in that a free end edge portion bent into the rectangular tube is provided with a notch portion capable of receiving the other connector terminal for the fitting pressure contact. 2. A connector terminal for fitting and pressure contact with another connector terminal for electrical connection, wherein a long free edge of one side plate of both side plates connected to the substrate is bent inward and the other end is bent. The short free end edge of the side plate is folded back inside to form a tubular shape,
A connector terminal characterized in that a cutout portion which can receive the other connector terminal for the fitting pressure contact is provided on the long free end edge portion. 3. The connector terminal according to claim 1, wherein a predetermined gap is provided between the substrate and the free end edge bent in the rectangular tube. 4. Another rectangular tubular portion, which is connected to the substrate and both side plates, is provided in front of and behind the rectangular tubular portion, and the free end edges of the connected both side plates are bent inward with respect to each other. Claim 1 or 2 characterized by the above.
Terminal for the described connector. 5. The connector terminal according to claim 4, wherein a projection extending forward from at least one side of a front end portion of the another front rectangular tubular portion is continuously provided. 6. A guide portion is provided on one side of the front end portion of the other square tubular portion in the front side, the guide portion being formed by bending the inside of the other square tubular portion and guiding the cutout portion. The terminal for a connector according to claim 4, wherein 7. The upper wall formed in a tubular shape is provided with at least one of a locking piece with a housing and a reverse insertion preventing piece. Terminal for connector. 8. The terminal for a connector according to claim 1, wherein the free end edge portion in which the cutout portion is formed is made thinner toward the tip end portion. 9. A predetermined gap is provided between a tip end portion that is cut and raised from the substrate inward and a free end edge portion where the cutout portion is formed. Terminal for the described connector. 10. A free end having a predetermined gap between tip portions cut and raised inward from opposite positions of both side plates connected to the substrate, and the notch portion being formed between the tip portions. 9. The connector terminal according to claim 8, wherein the edge portion is arranged so as to be swingable in a bending direction.