JPH06198574A - Cordless electric small-sized crimp tool - Google Patents

Abstract

PURPOSE:To provide a cordless electric small-sized crimp tool which can eliminate the need of a nipper or the like for a crimp terminal for cutting and removing the end of an insulating coat in the case of connecting the crimp type terminal to an electric wire and enable one-handed cutting work and lever operation for the insulating coat. CONSTITUTION:A handle part is formed on a case 1 where a motor, a battery a driving mechanism and a tool head are contained. A main switch lever 6, a safety switch lever 7 and a hammer lever 8 for moving the toll of a tool head are respectively disposed on the case 1 in such a manner as to be freely rotated and be returned to the initial position by the energizing force of a spring, and cutters 16,17 are provided on the hammer lever 8 and the case 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless electric compact crimping machine for inserting and crushing and connecting an end portion of a conductor to a crimping terminal, and more specifically, cutting only an insulating coat at an end portion of a wire. The present invention relates to a cordless electric compact crimping machine having a cutter capable of connecting a bare conductor to a crimp terminal.

[0002]

2. Description of the Related Art As shown in FIG.
When connecting the crimp terminal W2 to 1, the connection work was performed using a small-sized manual crimping machine, but in recent years, an electric small-sized crimping machine has been used because hands are not tired and efficiency is not improved. When connecting the crimp terminal W2 to the electric wire W1, see FIG.
As shown in (A) and (B), the insulating coat (often made of vinyl resin) covering the surface of the conductor W1 must be removed. In such a case, conventionally, a semicircle with a diameter slightly smaller than the diameter of the wire was formed above and below the blade of the nipper, and the work of pinching and removing the wire here was performed. And auxiliary tools such as nippers are required. In addition, when operating the main switch lever in an electric tool such as an electric compact crimping machine, the safety switch lever may be operated before the operation. Such a switch mechanism is, for example, a two-handed system in which a handle with a main switch lever of an electric power tool is operated with the left hand when the user holds the handle with the right hand, or both the main switch lever and the safety switch lever are operated with one hand. It is either one-handed method.

[0003]

When the crimp terminal is crushed and connected to the electric wire, the end of the insulating coat covering the surface of the conductor is cut and removed by a nipper each time, and then the electric wire is driven. Using a small crimping machine is cumbersome and inefficient. In particular, it is not only troublesome to carry and move both the crimping machine and the nippers during electric installation work, but it is inconvenient if the nippers are not left behind. In addition, it is inconvenient for the drive device to operate and the main switch lever and the safety switch lever to be operated with both hands just by touching the main switch lever with a hand.

The present invention has been made in view of the above problems, and an object thereof is a nipper or the like for cutting and removing the end portion of the insulating coat when the crimp terminal is connected to the electric wire. Another object of the present invention is to provide a cordless electric compact crimping machine which does not require any other auxiliary tool and which can cut an insulating coat with one hand and can operate a safety switch lever and a main switch lever.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a cordless electric compact crimping machine in which a motor, a battery, a drive mechanism and a tool head are housed. A handle portion is formed on the case, and a main switch lever, a safety switch lever, and a hammer lever for moving and operating a tool of the tool head are rotatably mounted on the case by an urging force of a spring. Place it so that it returns to the position of
Further, a cutter is provided on the hammer hammer and the case.

[0006]

The operation of the cordless electric compact crimping machine as the above means will be described below with reference to the reference numerals in the accompanying drawings. First, when connecting the electric wire to the crimp terminal, the semicircle 18b or 19b of the cutter 16 fixed to the upper part of the rear case 1B is provided with the length of the insulation coat necessary for cutting the end of the electric wire. Put it out and put it on. Then, the hammer iron lever 8 is pushed in the direction of the arrow with the thumb of the right hand, for example, and as shown by the chain double-dashed line, the semicircle 18a or 19a of the cutter 17 fixed to the hammer lever 8 is shown.
Is pressed with the semicircle 18b or 19b of the lower cutter 16 and pulled with the left hand, only the insulating coat portion of the wire is removed. The wire portion from which the insulation coat at this end has been removed is fitted into the crimp terminal, the hammer lever 8 is again pulled by the thumb and placed on the crimp head 9, and then the main switch 6 is operated to operate the motor 2 and crimp. If the head 9 is actuated and crimped, the crimping work of the electric wire is simple and smooth.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical sectional view showing the structure of a drive mechanism and a switch mechanism of a cordless electric compact crimping machine according to the present invention. The case 1 of this cordless electric compact crimping machine is composed of a front case 1A and a rear case 1B. The front case 1A has a motor 2 and a planetary gear speed change mechanism 3. The cam mechanism 4 and the tool head (compression head) 9 are stored,
A battery 5 is stored in the rear case 1B, and the rear case is
The handle 1B also serves as a handle portion. A main switch lever 6 for driving the motor 2, a safety switch lever 7 and a hammer lever 8 are provided above the handle portion of the case 1 (that is, the rear case 1B). ing. In addition,
Two microswitches 11 and 12 are arranged in the switch 1, and the motor 2 is rotated only when the microswitches 11 and 12 are simultaneously turned "ON".

The main switch lever 6 is rotatably pivoted about a pin 1a provided on the case 1 as a fulcrum, and an urging force by a spring (not shown) returns to the original position when a finger is released. To work. The main switch lever 6 is operated by an index finger to turn on / off the micro switch 11. The safety switch 7 is rotatably pivoted about a pin 1b provided on the case 1 as a fulcrum, and an urging force of a spring 10 acts so as to return to the original position when the hand is released. The safety switch 7 is operated near the base between the thumb and the forefinger to turn on / off the micro switch 12. The hammer hammer 8 is pivotally attached to the case 1, particularly a pin 1b provided on the upper part of the rear case 1B so as to be rotatable. Although this hammer hammer 8 is usually operated with the thumb, the hammer lever 8
Drives the moving lever 13 via the pin 15.

FIG. 2 is a plan view of the moving lever 13 portion. A spring 14 is attached to the moving lever 13 at one end and at the other end in a long hole 13b of the moving lever, and an end portion of the moving lever 13 is provided with a long hole 13c. Is pierced and the pin 15 is fitted therein. That is, the hammer hammer 8 drives the moving rod 91 described later via the moving lever 13. 20 is a roller.

FIG. 3 is an enlarged view of the rear case 1B and the hammer lever 8 portion. As shown in this figure,
On the upper part of the rear case 1B, a semicircle 18a having a different diameter is formed on the blade portion.
The cutter 16 having the parts 19b formed thereon is fixed, and
The hammer lever 8 also has semi-circles 18a and 19b with different diameters on the blade.
The cutter 17 formed with is fixed. These cutters 16 and 17 are formed with small holes 18 and 19 having different diameters when the hammer lever 8 is pressed by the thumb and combined as shown by the chain double-dashed line. These small holes 18 and 19 are small holes for fitting the electric wire when cutting the end of the insulation coat of the electric wire. In the embodiment of FIG. 3, two small holes are provided, but the number may be one or more.

The planetary gear speed change mechanism 3 includes a sun gear 31 fitted to a drive shaft 21 of the motor 2 and a planetary gear 32.
The rotational force is transmitted to the fourth stage planetary holding plate 34 by decelerating through the above. The fourth stage planetary holding plate 34 is spline-fitted to the rotary shaft 41 of the cam mechanism 4.

The cam mechanism 4 is composed of a rotary shaft 42 following the rotary shaft 41 and an eccentric shaft 43. The rotary motion of the eccentric shaft 43 (that is, eccentric motion) moves a moving rod 91 as described later. Then (or push) the crimping head 9 to crush the crimping terminal.

Next, the crimping head 9 is moved by the moving rod 91.
And a fixed die 92 which is a tool fixedly installed in the housing 90 and a movable die 93 which is fixed to the movable rod 91 and integrally moves. The fixed die 92 is formed with a concave portion for placing a terminal to be crimped and an end portion of a conductor wire, and the movable die 93 side is formed with a convex portion for closely fitting these concave portions. As described above, the moving rod 91 and the moving die 93 are driven (moved) by the cam mechanism 4. The tip portion 13 of the moving lever 13
A is fitted and locked in a groove 91a formed in the moving rod 91 (see FIG. 1).

The drive mechanism, the crimping head and the switch mechanism of the cordless electric compact crimping machine according to the present invention are as described above. Next, the operation thereof will be described with reference to the accompanying drawings (mainly FIGS. 1 and 3). . First, when connecting the electric wire to the crimp terminal, the semicircle 18b or 19b of the cutter 16 fixed to the upper part of the rear case 1B is provided with the length of the insulation coat necessary for cutting the end of the electric wire. Put it out and put it on. And Hammering Lever-8
Is pressed in the direction of the arrow with the thumb of the right hand, for example, and is shown by the chain double-dashed line.
a or 19a to the semi-circle 18b or 19 of the lower cutter 16
If you pull it with your left hand while pressing it in line with b, only the insulating coat part of the wire is removed. The wire portion from which the insulation coat at this end has been removed is fitted into the crimp terminal, and the hammer lever is
If 8 is again placed on the pulling and crimping head 9 with the thumb and then the main switch 6 is operated to activate the motor 2 and the crimping head 9 for crimping, the crimping work of the electric wire is simple and smooth.

Further, in the above operation process, when the insulating coat at the end of the wire is removed, the hammer lever 8 is operated by the thumb, so that the safety switch lever 7 is not touched near the base of the thumb and the index finger. Without microswitch 12
Never set to N. Therefore, the crimping head 9 does not operate. On the other hand, when the electric wire is crushed and connected to the crimp terminal, the index finger is applied to the main switch 6 so as to hold the rear case 1B by hand, so that the safety switch 7 is pushed near the base between the thumb and the index finger. Therefore, the micro switch 12 must be turned on before the main switch 6 is pressed. Therefore, the microswitches 11 and 12 are turned on at the same time, and the motor 2 and the planetary gear mechanism 3 are actuated so that the crimping head 9 can crush and connect the crimping terminal to the electric wire.

In the embodiment of the present invention, the switch mechanism of the cordless electric compact crimping machine has been described. However, when the insulating coat such as the insulating vinyl coat of the electric wire is removed, another electric tool is used. Further, a cutter can be provided on the hammer lever and the case, and the main switch and safety switch can be similarly arranged. And before operating the main switch, you can always operate the safety switch to prevent malfunction. The hammer 16 and the cutter 16 provided on the case 1
Cutters 17 and 17 can also be used for simple cutting, and cutters or other types of tools in which semicircles 18a and 18b are not formed may be attached.

[0017]

Since the switch mechanism of the cordless electric compact crimping machine of the present invention has the above-described construction, the cordless electric compact crimping machine alone can be used to remove the insulation coat of the electric wire. Can be connected to crimp terminals. Therefore, no nippers are required, the troublesomeness of electric installation work is eliminated, and the work efficiency is significantly improved. According to the invention,
Not only can you cut the insulation coat and operate the main switch lever and safety switch lever with one hand of an electric tool such as a dress electric compact crimping machine, but you can also use a drive mechanism for the tool head such as the crimping head. When operating, the safety switch lever is always operated and then the main switch lever is pushed, so that the operation order of the switch lever is not mistaken.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a configuration of a drive mechanism and a switch mechanism of a cordless electric compact crimping machine according to the present invention.

FIG. 2 is a plan view of a moving lever portion which constitutes the cordless electric compact crimping machine of the present invention and is driven by a hammer lever.

FIG. 3 is an enlarged view of a rear case and a hammer lever portion constituting the cordless electric compact crimping machine of the present invention. This

FIG. 4 is a perspective view of an electric wire and a crimp terminal which are connected by the cordless electric compact crimping machine of the present invention.

FIG. 5 (A) is a plan view showing an end of an electric wire,
FIG. 5B is a plan view showing a state in which the insulating coat at the end of the electric wire is cut and removed.

[Explanation of symbols]

1 case 2 motor 3 planetary gear speed change mechanism 4 cam mechanism 6 main switch lever 7 safety switch lever 8 hammer hammer lever 9 crimping head 11, 12 micro switch 13 moving lever 14 springs 16, 17 cutter 18, 19 Small hole 18a, 18b Semicircle 19a, 19b Semicircle

Claims (1)

[Claims] 1. A handle portion is formed on a case accommodating a motor, a battery, a drive mechanism and a tool head, and a main switch lever, a safety switch lever and a tool of the tool head are formed on the case. And a hammer hammer for moving the hammer are arranged so as to be rotatable and returned to their original positions by the urging force of a spring, and a cutter is provided on the hammer lever and the case. A cordless electric compact crimping machine.