JPS6025823Y2 - Female terminal fitting - Google Patents

Description

[Detailed description of the invention] The present invention relates to a female terminal fitting, and more specifically, a female terminal fitting in which an elastic contact piece is inserted into a cylindrical terminal connection part, and which has a function of preventing backlash of a male terminal. The present invention relates to a female terminal fitting equipped with.

A conventional example of a female terminal with a male terminal rattling prevention function is shown in FIG.

A blank punched from a single metal plate is bent and formed to provide a cylindrical terminal connection portion 11 and an elastic plate 14 that is elastically bent at an elastic portion 15. Board 14
A male terminal is inserted between the two.

In order to prevent the male terminal from rattling, the terminal side plate 13 is provided as a punched piece that protrudes and is bent so that the left and right width is set to the required dimension.

This type of integral structure is advantageous in that there are fewer processing steps because only one punching and bending process is performed from the metal fitting plate, but there is a disadvantage in that the material is expensive due to the use of elastic material over the entire surface.

Further, when punching out 13.23 parts of the terminal side plate from the blank, the punching width must be at least as large as the plate thickness, and if the slit is narrow, the life of the mold will be significantly shortened.

When increasing the width of the slit, the strength of the side plate will decrease, and it will be more difficult to process the specified width to prevent backlash, and since there is no protection for the terminal side plate during use, external forces will cause the terminal side plate to move inward. It is easy for the rattling prevention function to be lost due to deformation of the legs or legs opening outward.

An example of an assembled structure is shown in FIG.

A saddle portion 32 is provided by cutting out the side plate of the cylindrical terminal connecting portion 31, and an elastic plate 33 consisting of a tongue piece that is separately curved into an arched shape is inserted into the terminal connecting portion 31, and the waist saddle piece 34 is locked to the saddle portion 32. This is a female terminal fitting made up of an assembled product.

The two-part structure of this example is advantageous in reducing material costs by properly using metal materials.

However, assembly costs are required. This two-part female terminal does not have a function to prevent the male terminal from rattling.

An object of the present invention is to provide a female terminal fitting which is composed of two parts, has a function of preventing backlash of a male terminal, and is easy to process and assemble.

According to the present invention, a female terminal fitting is provided in which an elastic contact piece is inserted into a cylindrical terminal connection part.

Next, an embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 3, a resilient contact piece 51 is attached to the terminal connection portion 41.
A female terminal fitting is shown with a .

The terminal connection part 41 is formed into a cylindrical shape from a metal plate blank, and the terminal top plates 42 and 42 are butted from the left and right sides, and the open end 46
The terminal top plate 42 adjacent to the terminal top plate 42 is provided with a stop 47 for preventing the notch piece from being pulled out, and is used to prevent the previously described elastic contact piece 51 from being pulled out by deforming it after insertion.

A built-in stopper 45 is provided protruding from the rear end surface to define the insertion end of the elastic contact piece 51.

Locking openings 44 are provided in the left and right terminal side plates 43 of the terminal connecting portion 41 .

The elastic contact piece 51 includes a top plate 52 extending from the rear end 54 toward the opening end, and side plates 55 and 5 extending toward the opening end.
It is equipped with 5.

The top plate 52 is curved into an arcuate shape, and a flat tongue portion 53 is provided at the end of the top plate 52 to elastically press the male terminal inserted between the top plate 52 and the bottom plate of the terminal connection portion 41. The terminal tongue portion 53 has a slippage for expansion and contraction.

The side plates 55 provided on the left and right extend on both sides to match the width of the male terminal, and in the illustrated example, the width of the side plates is reduced and a locking end 56 is provided which is curved outward.

As mentioned above, according to the present invention, the left and right side plates 5 are provided with a width that matches the width of the male terminal in order to prevent the male terminal from rattling.
5, the side plate 55 is formed as an elastic contact piece 51 integral with an arch-shaped top plate 52 that elastically clamps the male terminal, and a locking end 56 is provided at the tip of the side plate 55, and the elastic contact piece 51
is attached to the cylindrical terminal connection part 41.

When inserting the elastic contact piece 51 into the terminal connection part 41, the side plate 55
elastically bends inward, and when inserted to the rear end, the locking end 56 locks in the locking opening 44 and is fixed.

Although an additional device is not necessarily required to prevent the elastic contact piece 51 from being pulled out, a pull-out stopper 47 can be punched out and fixed as shown in the illustrated example.

As described above, the assembly process is extremely simplified, the amount of expensive elastic metal used is reduced, the advantages of the two-part structure are taken advantage of, the disadvantages are compensated for, and the structure is safe and secure and prevents rattling. A female terminal fitting can be obtained.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional female terminal fitting with an integrated structure.
FIG. 2 is a perspective view of another example similar to the above, and FIG. 3 is a perspective view of a female terminal fitting showing an example of the implementation of the present invention. 41...Terminal connection part, 43...Terminal side plate, 44...Latching opening, 46...Open end, 51...Elasticity Contact piece, 52... Top plate, 55... Side plate, 56... Locking end.

Claims (1)

[Scope of utility model registration request] A female terminal fitting is formed by inserting an elastic contact piece into a cylindrical terminal connection part with an open end surface, and the elastic contact piece extends from the rear end toward the open end and is curved in an arcuate shape. and side plates on both sides extending from the rear end toward the opening end, and the tips of the side plates are locked in locking holes provided in the side walls of the terminal connection portion. Female terminal fitting.