JP3178356B2 - Terminal fitting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal fitting provided with a stabilizer and a lance.

[0002]

2. Description of the Related Art Conventionally, a terminal fitting of this type is known as shown in FIG. The terminal fitting 1 is formed by bending a conductive metal plate, and in FIG. 5, a connection part 2 with a mating terminal fitting is formed. Connection part 2
Is bent so as to form a rectangular cylindrical shape. On the ceiling surface 3, a stabilizer 4 mainly serving as an insertion guide for the terminal fitting 1 and a lance 5 for preventing the terminal fitting 1 from coming off are provided. , Each formed by cutting and raising. FIG. 6 shows a state in which the above-mentioned terminal fitting main body 2 is unfolded. The connecting portion 2 is bent along four broken lines as shown by broken lines in the drawing, and an area located at the left end of the four bent lines. Form the ceiling surface 3. A notch 6 is provided therearound so that the lance 5 and the stabilizer 4 are formed.

[0003]

In the conventional terminal fitting 1 described above, since the place where the lance 5 is provided is the end of the metal plate, it is most turned up in a rectangular tubular shape as shown in FIG. The lance 5 is located in an easy place, and there is a problem how to prevent this turning. Lance 5
Is provided at the end, the notch 6 opens outward from the edge of the metal plate and the metal plate is cut off,
The holding strength of the lance 5 was reduced. Furthermore, in the conventional terminal fitting 1 described above, the stabilizer 4 plays a role of protecting the lance 5 in addition to the role of the original insertion guide, so the stabilizer 4 is arranged at a position close to the lance 5. There was a situation.
Under such circumstances, the lance 5 and the stabilizer 4 are both formed on the ceiling surface 3. However, as a result, the area of the ceiling surface 3 to be cut is increased, and the rigidity as a whole is reduced, and as a result, the supporting strength of the lance 5 is reduced.

[0004] The present invention has been made in view of the above problems, and has as its object to increase the strength of a lance.

[0005]

Means for Solving the Problems <Invention of claim 1> The invention of claim 1 has a square tube portion at the tip end for connection with a mating terminal fitting, and this square tube portion is electrically conductive. together they are formed by bending a metal plate, a lance forming the entire stopper engages with the inner wall of the cavity of the connector housing the terminal fittings are accommodated is raised to form cut in a side surface of the rectangular tube portion, this The lance is inside the edge of the metal plate
Terminal fittings disposed in the region, wherein the square tube portion is heavy.
It has two ceiling surfaces joined together,
On the ceiling surface of the well surface that is superimposed on the outside,
Is formed, and is superposed on the outside.
Erected next to the lance on the side edge of the ceiling surface
The terminal fitting is provided with a stabilizer projecting over the terminal fitting.

<Invention of claim 2> The invention of claim 2 is characterized in that the lance is arranged such that a fixed end thereof faces a bent corner of a metal plate material in the rectangular tube portion. Item 4. The terminal fitting according to item 1.

According to a third aspect of the present invention, a stabilizer serving as a guide when the terminal fitting is inserted into the cavity is provided on a surface other than the surface on which the lance is provided. The terminal fitting according to claim 1 or 2, wherein the terminal fitting is provided. <Invention of Claim 4> Claim 4
The invention according to claim 3, wherein the stabilizer is formed to protrude outward from an edge of the metal plate.

[0008]

Function and Effect of the Invention

According to the first aspect of the present invention, since the lance is formed inside the edge of the metal plate, the lance is located at a position where it is difficult to be turned up in the rectangular tube portion, and the lance is prevented from being turned up. It is planned. Further, since the notch for forming the lance is also located inside the edge, the notch does not open outward from the edge. That is, since the opening area for forming the lance is closed without being opened outward, the strength can be maintained as compared with a case where the metal plate is divided by the opening.

<Invention of claim 2> According to the configuration of claim 2, in the bent corner portion of the metal plate material in the rectangular tube portion,
The surface adjacent to the surface on which the lance is formed serves as a reinforcing rib of the surface on which the lance is formed. Since the fixed end of the lance is arranged so as to face the corner, the lance can be prevented from bending beyond the fixed end, and the lance can be reliably prevented from being turned up.

<Invention of claim 3> According to the invention of claim 3, the lance is arranged separately on one surface constituting the square tube portion of the terminal fitting, and the stabilizer is arranged separately on the other surface. I have. By doing so, a larger area involved in supporting the lance can be ensured on the surface where the lance is provided as compared with the case where the lance and the stabilizer are provided on one surface at the same time. As a result, the support strength of the lance can be increased, and therefore, the reliability of the terminal fitting when it is inserted into the connector housing can be improved. According to the fourth aspect of the present invention, the stabilizer is not provided in the inner area of the metal plate, but is provided so as to protrude from the edge of the metal plate. In other words, the metal plate is not cut out when the stabilizer is formed, so that the strength can be maintained.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment embodying a terminal fitting of the present invention will be described below with reference to FIGS.
The terminal fitting of the present embodiment is a female terminal fitting F as shown in FIGS. 1 to 3, and the insertion portion 1 into which the male terminal fitting is inserted.
0 (corresponding to the rectangular tube portion of the present invention) and an electric wire holding portion 20 for holding the coated electric wire in a pressed state.

The insertion portion 10 is formed by bending a thin metal plate (corresponding to the metal plate of the present invention) into a rectangular tube shape, and has an elastic contact piece 11 capable of contacting with a male terminal fitting inside its front edge. It is formed by folding back from the part. On the ceiling surface 17 of the insertion portion 10, a stabilizer 12 for guiding the female terminal fitting F to a proper position of the cavity of the connector housing (not shown) and a lance 13 for locking the female terminal fitting F in the cavity are provided. Are projected upward. The insertion section 10 will be described in further detail with reference to a developed view shown in FIG.

The band-like portion of the thin metal plate that forms the insertion portion 10 is bent into five regions, and the middle region forms the bottom surface 14 of the insertion portion 10. On both sides of the ceiling surface 16, 15
17 are constituted. The ceiling surface 17 shown on the right side of FIG. 2 among the ceiling surfaces 16 and 17 is a side to be overlapped on the outside, and the stabilizer 12 protrudes from the side edge.

A U-shaped notch 18 for forming the lance 13 is provided in the ceiling surface 17. The notch 18 has a U-shaped opening formed in the insertion portion 10.
Is formed so as to face the front in the insertion direction (the lower side in FIG. 2),
It is arranged near a corner (corresponding to a bent corner according to the present invention) formed by the ceiling surface 17 and the side surface 15 adjacent thereto. More specifically, one side of the notch 18 extends along the corner, and the other side parallel to the side extends in the middle of the ceiling surface 17 in the width direction. In addition, the notch 18 is housed at a position similar to that of the stabilizer 12 in the longitudinal direction of the insertion portion 10. This is because the stabilizer 12 is erected next to the lance 13 to protect the lance 13 as shown in FIG.

The wire holding portion 20 is formed by bending a thin metal plate similarly to the insertion portion 10. The electric wire holding part 20 is shown in FIG.
As shown in the figure, a cross-sectional channel shape is formed continuously on the bottom surface 14 and the side surface 15 of the insertion portion 10, and a press-contact portion 21 provided by cutting and raising press-contact blades 15 </ b> C from both sides is provided near the insert portion 10. On the side remote from the insertion portion 10 is formed a barrel portion 22 provided with projecting pieces 15D, 15D extending upward.

Next, an operation of assembling the female terminal fitting F having the above-described configuration will be described. First, the stabilizer 12 and the lance 13 made of a thin metal plate punched into a flat plate are cut and raised. Specifically, in FIG. 2, the base of the stabilizer 12 is bent at right angles from the dotted line B in FIG. 2 to the paper surface side in FIG. 2, and the base of the lance 13 is formed at a predetermined angle from the dotted line C in FIG. Bend so as to protrude on the same side as 12. Although not shown in FIG. 2, the press contact blade 15 </ b> C is bent at a right angle to the side opposite to the stabilizer 12 (in FIG. 2, the front side in the drawing).

Subsequently, the elastic contact piece 11 is folded back so as to face the bottom face 14, and the side surfaces 15, 15 are sandwiched from both sides by the elastic contact piece 11, and the dotted line D in FIG. Bend up. At this point, the rear end side of the female terminal fitting F becomes channel-shaped and the wire holding portion 20 is formed.
Is formed. From this state, the ceiling surface 16 is bent from the dotted line E in FIG. 2 so as to face the bottom surface 14, and the ceiling surface 17 is bent so as to be superimposed thereon. Then, the insertion portion 10 is formed by making the front side of the female terminal fitting F into a square tubular shape.

By the way, in the prior art, both the lance and the stabilizer are arranged on the ceiling surface constituting the insertion portion, and the area of the meat pulled out from the ceiling surface is the sum of the lance and the stabilizer. On the other hand, in the present embodiment, in the rectangular insertion portion 10, the stabilizer 12 is formed at a place different from the ceiling surface 17 where the lance 13 is formed, and the lance 13 is formed from the ceiling surface 17. It is only necessary to remove the portions necessary to construct the 13. Further, in the conventional device, the notch for forming the lance and the stabilizer is opened outward from the edge of the thin metal plate, so that the ceiling surface supporting the lance is divided in the longitudinal direction. On the other hand, in the present embodiment, since the notch 18 for forming the lance is formed inside the edge of the thin metal plate, the ceiling surface 17 has a bridge-like shape on the edge side of the notch 18 from the notch 18. A meat connection portion (portion A in FIGS. 1 to 3) is formed, and the notch 18 is closed without opening outward. Thereby, the strength can be maintained as compared with the case where the metal sheet is cut off. Further, since the lance 13 is formed near the corner of the ceiling surface 17 with the side surface 15, the side surface 15 functions as a reinforcing rib and prevents the lance 15 from bending beyond its end. be able to. Further, in the embodiment, the stabilizer 12 is provided so as to project from the edge of the thin metal plate (specifically, the ceiling surface 17). Since there is no notch, the strength can be maintained accordingly.

The insulated wire is pushed into the press-contact portion 21 of the assembled female terminal fitting F from above, and the insulated wire is pressed by the press-contact blades 15C, 15C. Barrel 22
Is held.

<Other Embodiments> The present invention is not limited to the above embodiments. For example, the following embodiments are also included in the technical scope of the present invention.
In addition to the following, various changes can be made without departing from the scope of the invention.

(1) In this embodiment, the stabilizer 12
Is formed so as to protrude outward from the edge of the ceiling surface 17. For example, as shown in FIG.
The stabilizer 12 may be formed by providing a U-shaped notch 19 in the side surface 15 adjacent to the side wall. According to this configuration as well, the stabilizer 12 can be formed in a different place from the ceiling surface 17 where the lance 13 is formed, as in the above-described embodiment. Lance 13
Support strength can be increased.

(2) In the above-described embodiment, the female terminal fitting F provided with the press contact blades 15C, 15C in the wire holding portion 20 has been exemplified. However, the presence or absence of the press contact blade or the male and female types is not limited. Therefore, for example, a crimp terminal or the like may be used. In short, the present invention is applicable to a terminal fitting provided with a lance and a stabilizer.

(3) In this embodiment, the number of the stabilizers 12 is one, but the invention may be applied to two. In that case, a stabilizer can be added by providing a cutout in a portion other than the ceiling surface where the lance is formed, for example, in a side surface adjacent to the ceiling surface.

[Brief description of the drawings]

FIG. 1 is a perspective view of a terminal fitting according to an embodiment of the present invention.

FIG. 2 is a development view thereof.

FIG. 3 is a partially broken plan view of the terminal fitting.

FIG. 4 is a development view of a terminal fitting of a modified example.

FIG. 5 is a perspective view of a conventional terminal fitting.

FIG. 6 is an expanded view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Insert part (square tube part) 12 ... Stabilizer 13 ... Lance 17 ... Ceiling surface F ... Female terminal fitting

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hitoshi Okumura 1-14 Nishisuehirocho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd. (56) References JP-A-8-148194 (JP, A) JP-A-5 -242923 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) H01R 13/42

Claims (4)

(57) [Claims] An end portion has a rectangular tube portion for connection with a mating terminal fitting, the rectangular tube portion is formed by bending a conductive metal plate, and the side surface of the rectangular tube portion has the rectangular tube portion. A lance that locks to the inner wall of the cavity of the connector housing in which the terminal fitting is housed and that is formed so as to prevent the whole from coming off is formed.
A terminal fitting is disposed in the rectangular cylindrical portion you have two ceiling surface superimposed
Ri, ceiling side to be superposed on the outer side of the two ceiling surface
The lance is formed on the surface, and the side edge of the ceiling surface on the side overlapped with the outside is
Stabilizer that protrudes to stand next to the lance
Terminal fitting, characterized in that are provided. 2. The terminal fitting according to claim 1, wherein the lance is arranged such that a fixed end thereof faces a bent corner of a metal plate material in the rectangular tube portion. 3. The device according to claim 1, wherein a stabilizer serving as a guide when inserting the terminal fitting into the cavity is provided on a surface other than the surface on which the lance is provided. Terminal fittings. 4. The terminal fitting according to claim 3, wherein the stabilizer is formed to protrude outward from an edge of the metal plate.