JPH043206Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention [Industrial field of application] The present invention is a method to easily check whether the bending between the electrical contact part and the crimping part that occurs when a wire is crimped to a terminal is within an allowable range. It relates to a jig for judgment.

[Conventional technology]

In general, terminals tend to bend as shown in Figure 11 when wires are crimped, but conventionally there was no jig that could easily measure the bending dimension.

For this purpose, for example, as shown in the figure, a terminal a is made up of an electrical contact part b to the other terminal and a caulking part d that connects to the electric wire, and the electric contact part b and the caulking part d are formed in a straight line. In this step, a limit sample is prepared in which the dimension L from the bottom surface c of the electrical contact part b of terminal a to the upper end of the crimped part d is exactly equal to the allowable limit, and this is visually checked by comparing it with the actual crimped wire. I was measuring the bend.

However, the limit sample must be adjusted every time the type of terminal changes, and furthermore, it takes time and effort to measure whether the bending dimension has reached a predetermined limit value. In addition to this,
Since the swaged terminals were visually measured by comparing them with a limit sample, there was a drawback that errors occurred due to individual differences.

[Problem that the invention attempts to solve]

An object of the present invention is to solve the above-mentioned problems and provide a jig that allows any operator to accurately, simply and quickly determine the bending of a terminal.

Structure of the Invention [Means for Solving Problems] To explain with reference to the drawings, the terminal bending determination jig of the present invention has a method for determining the bending of a terminal, as shown in FIGS. 1, 2, and 6 above. Electrical contact b to terminal
and a caulking portion d that connects to the electric wire, and these electric contact portions b and caulking portions d are formed between the electric contact portion b and the caulking portion d of the linearly formed terminal a. This terminal bending determination jig is capable of measuring the allowable limit range of bending, and includes a terminal holding base 1 having an insertion hole 2 into which the electrical contact part b can be inserted, and a terminal holding base 1 having an insertion hole 2 into which the electrical contact part b can be inserted. A terminal viewing plate 3 is placed in the direction in which the caulking portion d protrudes when inserted into the insertion hole 2.
The terminal viewing plate 3 has a hole bottom surface P of the insertion hole 2 as a reference surface, and is located at a height corresponding to a predetermined dimensional limit value from the reference surface to the electrical contact portion b. It is characterized by forming a bending judgment surface 4 that can judge the bending dimension of the caulked part d, and instead of this bending judgment surface 4, a see-through hole 5 for bending judgment may be provided as described later.

In the embodiment shown in FIG. 1, a plurality of insertion holes 2 are arranged side by side from the front side of the terminal holder 1, and on both sides of these insertion holes 2, thin terminal viewing plates 3,
3 is provided. The upper end of each terminal viewing plate 3 is opened to form a horizontal bending determination surface 4 for determining the bending of the terminal.

This curve determination surface 4 is determined as follows. That is, in FIG. 11 showing the conventional example,
A predetermined bending dimension limit value L is determined at the height from the bottom surface c of the terminal a to the upper end of the caulking portion d. Then, the upper end surface of the terminal viewing plate 3 is inserted into the terminal insertion hole 2.
Using the hole bottom surface P as a reference, the height from the hole bottom surface P is equal to the bending dimension limit value L, and is used as the bending determination surface 4.

Furthermore, the dimensions and depth of the terminal insertion hole 2 can be created depending on the type of terminal to be determined.
Note that the limit value L of the bending dimension of the terminal is based on the bottom surface c of the terminal a as shown in FIG.
If the axis P' of is used as a reference, it becomes L'.

[Effect]

As shown in Fig. 2, after inserting the electrical contact part b of the terminal a with the wire w crimped into the insertion hole of the terminal holder 1 and aligning its bottom surface c with the hole bottom surface P, which is the reference surface,
From the side of the terminal viewing plate 3, the bending judgment surfaces 4 on both sides,
4 are visually checked so that they are flush, and if the caulked portion d protrudes above the judgment surfaces 4, 4, it is immediately judged that the bending is too bent.

In this way, there is no room for individual differences in the level of experience or intuition of the operator to determine whether the terminal is bent, and the determination can be made extremely easily, quickly, and accurately.

[Other Examples] The limit value of the bending dimension of the terminal is determined by converting the angle θ of the electrical contact part b with respect to the terminal a caulking part d into a dimension to determine the bending dimension as shown in Fig. 3. You can also do it. In addition, terminal a, as shown in Figure 4,
In some cases, the caulking part d is laterally bent (twisted) with respect to the electrical contact part b, but this can be done by shaping the insertion hole 2 into a shape that allows the terminal to be inserted laterally. Furthermore, as shown in Fig. 5, the terminal a has a crimp portion d that bends not only upward (bend up) but also downward (bend down). This can be done by forming an insertion hole 2 in the hole.

In addition, as another way of determining the bending dimension, as shown in FIG. 6, instead of the limit value L,
The dimension l from the bottom surface c to the upper end of the lower surface of the caulking portion d can also be taken.

FIG. 7 shows another embodiment of the judgment jig of the present invention, in which the hole bottom surface P of the insertion hole 2' is
is made sufficiently deep, and the terminal viewing plates 3 on both sides are provided with see-through holes 5 for determining bending with respect to the above-mentioned limit value l.

In this case, as shown in FIG. If the tightening part d is not visible, it means that it is bent too much, and if it is visible, it is within the allowable limit. In this way, the bend determination portion provided on the terminal viewing plate 3 can be changed depending on the bend determination position of the wire crimping portion d with respect to the electrical contact portion b of the terminal a and the manner in which the reference plane is taken.

9 and 10 show another embodiment of the determination jig of the present invention. That is, the former is a sufficiently thick terminal viewing plate 3' which is made by integrating the terminal viewing plates 3, 3 on both sides in FIG. 1, and a judgment surface 4' which is made by integrating the bending judgment surfaces 4, 4. In the latter case, the jig shown in Fig. 7 was similarly modified to form a sufficiently long see-through hole 5'. The dimensional differences are set to be L and l, respectively.

In these cases, the bending of the terminal is determined in exactly the same way as above, but the determination surface 4' is wide and the viewing hole 5' is long, making it easier to align the line of sight when looking from the side. This has the advantage of making you less tiring.

The above-mentioned judgment jig can be made of metal, wood, or synthetic resin, but the viewing plates 3 and 3' can be made of plain plastic, such as polycarbonate,
If it is made from an acrylic resin plate or the like, the attached terminals can be seen, allowing accurate judgment to be made while checking the attached status of the terminals, which also provides a psychological sense of security.

Effects of the Invention As explained above, according to the terminal bending determination jig of the present invention, the bending of a terminal can be determined accurately, simply and quickly.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the jig of the present invention;
The figure is an explanatory diagram of how to use it, Figures 3 to 6 are explanatory diagrams of how to determine the bending dimension limit value of the terminal, respectively, Figure 7 is an explanatory diagram showing another example of the jig of the present invention, and Figure 8 is an explanatory diagram of how to use the jig. Figures A and B are explanatory diagrams of how to use each, Figures 9 and 10 are perspective views showing another example of the jig of the present invention, and Figure 11 is a conventional method of determining the bending dimension limit value of a terminal. FIG. 1... Terminal holding stand, 2... Insertion hole, 3... Terminal viewing plate, 4... Bending judgment surface, 5... See-through hole for bending judgment.

Claims (1)

[Scope of claim for utility model registration] Consists of an electrical contact part b to the other party's terminal and a caulking part d that connects to the electric wire, and these electrical contact parts b
Terminal bending determination jig capable of measuring the allowable limit range of bending that occurs between the electrical contact part b and the crimped part d in a terminal a in which the crimped part d and the electrical contact part b are formed in a straight line. The terminal holder 1 has an insertion hole 2 into which the electrical contact part b can be inserted, and the terminal holder 1 is arranged in a direction in which the caulking part d protrudes when the terminal a is inserted into the insertion hole 2. The terminal viewing plate 3 is attached to the terminal holding base 1.
The terminal viewing plate 3 has a hole bottom surface P of the insertion hole 2 as a reference surface, and is located at a height corresponding to a predetermined dimensional limit value from the reference surface to the electrical contact portion b. A terminal bend determination jig characterized in that a bend determination surface 4 or a bend determination see-through hole 5 is formed for determining the bend dimension of a caulked portion d.