JPH0355271Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to the improvement of a crimping tool for crimping terminals, etc. by press-fitting a male die into a female die by manual or electric means. It is used in the field of manufacturing and selling tools.

(Prior art) Conventional crimping tools are designed to crimp objects of multiple sizes by changing the female die or male die when the size of the object to be crimped, such as a terminal, changes. It had been.

(Problems to be Solved by the Invention) However, in the case of the above-mentioned conventional crimping tool, there were the following disadvantages and technical problems. In other words, when attempting to reliably crimp terminals of multiple sizes with different diameter lengths, the male die or female die must be replaced each time with a correspondingly sized male die or female die, which reduces the efficiency of the crimping operation. Also, if crimping is attempted without replacing the die, there is a problem that the pushing amount of the pressing protrusion of the male die is too deep, causing damage to the terminal, or too shallow, resulting in insufficient crimping.

This invention was developed to solve the above-mentioned problems, and its purpose is to:
To provide a convenient crimping tool capable of adjusting the pushing amount to a large or small size without requiring replacement of a male die.

(Means for Solving the Problems) In order to achieve the above object, the crimping tool according to the present invention is provided with a pressure receiving surface in the shape of a concave arc with the front side and both sides open on the head of the crimping tool body. In a crimping tool in which a female die and a male die having an appropriately shaped pressurization protrusion and which can move forward and backward are arranged facing each other, the amount of pushing of the pressurization protrusion is adjusted on both sides of the base of the male die at the base of the pressurization protrusion. A pair of first adjustment surfaces are provided facing each other, and the first adjustment surfaces are separated by a required step from the first adjustment surfaces.
A pair of second adjustment surfaces are provided oppositely at positions 90 degrees apart from the adjustment surfaces, and the male die is configured to be rotatable at 90 degrees, so that each pair of first adjustment surfaces and second adjustment surfaces are configured to respectively face a pair of stoppers provided on the female die.

(Function) According to the configuration of the present invention, there is a difference between the pushing amount of the male die when the first adjustment surface is in contact with the stopper and the pushing amount of the male die when the second adjusting surface is in contact with the stopper. Since a difference is created by the difference in level, it becomes possible to adjust the pushing amount in two steps when the male die is attached.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to a manual hydraulic terminal crimping tool shown in the drawings. As shown in Fig. 1, this crimping tool is roughly divided into tool body 1.
and a fixed handle 2 integrally formed with the tool body 1.
and a movable handle 3 pivotally attached to the tool body 1.

A die 4 is attached to the head of the tool body 1, and this die 4 is constructed by arranging a movable male die 5 that advances and retreats and a fixed female die 6 facing each other. There is.

The male die 5 is attached to the tip of an actuating body 7 that is movable in the tool body 1, and the female die 6 is formed inside the head member 8, and both sides of the pressure receiving surface 9 of the female die are formed inside the head member 8. The side facing the female die 5 (front side) is open and formed into a concave arc shape. 10 is a pair of stoppers on the left and right,
In this embodiment, the pressure receiving surface 9 is provided oppositely above and below.

The actuating body 7 protrudes from the tool body 1 so as to be movable forward and backward by a pressing mechanism (not shown). As the pressing mechanism, for example, a hydraulic mechanism described later can be considered, and in that case, the oil piston functions as the actuating body 7.

The male die 5 has a pressing protrusion 12 protruding from the center of the front end surface of its base body 11.
An adjustment surface 13 is formed around the die 2 to adjust the amount of pushing into the female die 6.

The pressing protrusion 12 is formed to have a square cross section, and the cross section becomes smaller toward the tip.

The adjustment surfaces 13 each include a pair of first adjustment surfaces 13a and second adjustment surfaces 13b, and the first adjustment surfaces 13a are formed on both sides of the base body 11 of the male die 5 at the base of the pressing protrusion 12. One pair is arranged, and the second
A pair of adjustment surfaces 13b are disposed at positions deviated by 90 degrees from the first adjustment surface 13a around the pressing protrusion 12.

A step h is provided between the first adjustment surface 13a and the second adjustment surface 13b by a stepped portion 14, and one of the adjustment surfaces (in the figure, the second adjustment surface 13
b) is formed low. A fitting recess 15 is provided on the back surface of the male die 5, and the male die 5 is fitted into the fitting recess 15 at the tip of the operating body 7 so as to be rotatable.

Reference numeral 16 denotes a locking means for the male die 5, which is formed at the fitting portion of the actuating body 7 and the male die 5.
That is, the outer peripheral wall of the male die 5 is provided with four locking holes 17 in the circumferential direction at equal distance intervals of one-fourth of the entire circumference, and the outer peripheral surface of the actuating body 7 is provided with one locking hole 17 in the axial direction. A recess 18 is provided, and a locking ball 19 is housed in the recess 18 and is urged outward by a spring body 20. Then, when a part of the spherical surface of the locking ball 19 is snapped into the engagement hole 17 of the male die 5, each pair of the first adjustment surfaces 13a, 13a or the second adjustment surfaces 13b, 13b The male dice 5 are positioned with one of them facing the stoppers 10, 10.

FIGS. 4 and 5 show the crimping operation, and FIGS. 4a and 4b show the case where the pressing amount H ₁ of the pressing protrusion 12 is made shallow in order to crimp the large diameter terminal L ₁ . show. That is, by rotating the male die 5 as shown in FIG.
0 and 10, the pressurizing protrusion 12 of the male die 5 is pushed into the female die 6 side by operating the handle 3 and activating the hydraulic mechanism etc., as shown in FIG.
As shown in FIG. 2, the first adjustment surfaces 13a, 13a collide with the stoppers 10, 10, and the moving distance (pushing amount) of the male die 5 is regulated to be small.

FIGS. 5a and 5b show the case where the pushing amount _H2 of the pressing protrusion ₁₂ is increased in order to crimp the small diameter terminal L2. That is, by rotating the male die 5 as shown in FIG.
10, pressurizing protrusion 12 of male die 5
When pushed into the female die 6 side in the same manner as described above, as shown in FIG. regulated. Therefore, the pushing amount of the pressing protrusion 12 at this time is
Since H ₂ is deeper by the step h than in the case shown in FIG. 1, terminals of different sizes can be crimped without replacing the male die 5 each time. In the figure, E indicates an electric wire.

The operating means of the male die 5 is not particularly limited, but
In this embodiment, a device with a built-in hydraulic mechanism will be described. Although not shown, the hydraulic mechanism is a known one, and is composed of an oil tank, a piston that pushes the male die 5, a plunger 21 that pumps oil, and the like. The plunger 21 is engaged with the movable handle 3, and when the movable handle 3 is repeatedly rotated toward the tool body 1, the reciprocating motion of the plunger 21 sequentially forces the oil in the oil tank into the piston cylinder. This oil pressure drives the piston toward the head of the tool body 1. As a result, the male die 5 attached to the tip of the piston moves toward the female die 6 as shown by the two-dot chain line, and the terminal is crimped. In addition, when returning the male die 5, manually open a return valve (not shown) and return the oil in the piston cylinder to the tank using a returning spring (not shown) while returning the piston to its original state. It is configured to be pushed to the position of .

Reference numeral 22 denotes a finger hook rotatably or fixedly fitted to the movable handle 3, and the finger hook 2
In this embodiment, the finger hook 22 is attached to a slightly forward part of the movable handle 3 from the middle part, and the finger hook 23 of the finger hook 22 is attached to the tool body 1. Although the case where the finger rest 23 is made to protrude is shown as an example, the finger rest 23 may be made to protrude upward (towards the side opposite to the tool main body).

This finger hook 22 is for hanging the thumb on the finger hook 23, and if you grip the tool body with your other fingers around the tool body and pull the movable handle toward the tool body with your thumb, Therefore, the crimping operation can be performed with one hand, and the other hand can be used to hold the terminal or the like to be crimped while accurately applying it to the die part. Therefore, when operating this type of crimping tool, which is heavy, there is no need to secure the fixed handle side with your knee etc. as in the conventional case, and the main body and fixed handle can be placed in a stable posture, for example, on a workbench. Moreover, the desired crimping work can be carried out reliably and easily.

(Effects of the invention) The present invention has a female die equipped with a concave arc-shaped pressure receiving surface with the front side and both sides open on the head of the crimping tool body, and a male die equipped with appropriately shaped pressure protrusions that can move forward and backward. In the crimping tool, a pair of first adjustment surfaces for adjusting the pushing amount of the pressing protrusion are provided oppositely on both sides of the base of the male die at the base of the pressing protrusion, and an outer first adjustment surface is provided. A pair of second adjustment surfaces are provided oppositely at positions separated from the surface by a required step and 90 degrees apart from the first adjustment surface, and the male die is configured to be rotatable at 90 degrees. The present invention relates to a crimping tool characterized in that each pair of first adjustment surfaces and second adjustment surfaces are configured to face a pair of stoppers provided on the female die side, respectively. There will be a difference between the amount of push of the male die when the first adjustment surface is in contact with the stopper and the amount of push of the male die when the second adjustment surface is in contact with the stopper by the difference in level. Therefore, even if the size of the object to be crimped, such as a terminal, changes, it is possible to adjust the pushing amount of the male die in two steps without having to change the male die each time, and it is possible to adjust the pushing amount of the male die in two steps, and it is possible to adjust the pushing amount of the male die in two steps without having to change the male die each time. This method is convenient because it can reliably crimp terminals and the like, and it also reduces the number of male die parts that need to be prepared.

In addition, as described in the embodiment, it is possible to provide a locking means on the male die side to prevent unexpected rotation of the male die so that the first and second adjustment surfaces can reliably face the stoppers. This prevents the male die from rotating unintentionally during the crimping operation, allowing stable crimping operations to be performed.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a front view, Fig. 2 is an enlarged longitudinal cross-sectional end view taken along line X-X in Fig. 1, and a, b, and c in Fig. 3 are enlarged views. Figure 4 a and b are perspective views of the die part and explanatory diagrams of the crimping operation, and Figure 5 a and b are the pushing of the male die shown in Figure 4. FIG. 3 is a perspective view of the die portion and an explanatory diagram of the crimping operation in a state where the amount is changed. Explanation of symbols, 1...Crimping tool body, 5...Male die, 6...Female die, 9...Pressure receiving surface, 10...
Stopper, 11...Male die base, 12...
Pressure projection, 13a...first adjustment surface, 13b...second adjustment surface, h...step.

Claims (1)

[Scope of utility model registration request] A crimping tool in which a female die with a concave arc-shaped pressure-receiving surface with the front side and both sides open and a male die with an appropriately shaped pressurizing protrusion that can move forward and backward are arranged opposite to each other on the head of the crimping tool body. At the base of the pressing protrusion, a pair of first adjusting surfaces for adjusting the pushing amount of the pressing protrusion are provided oppositely on both sides of the base of the male die, and a pair of first adjusting surfaces for adjusting the pushing amount of the pressing protrusion are provided at a required step distance from the first adjusting surfaces. A pair of second adjustment surfaces are provided oppositely at positions 90 degrees apart from the first adjustment surface, and the male die is configured to be rotatable at an angle of 90 degrees. A crimping tool characterized in that an adjustment surface and a second adjustment surface are configured to respectively face a pair of stoppers provided on the female die side.