JPH0145104Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a method for inserting a crimp terminal 1 with a neck as shown in Fig. 1 into the bare end of the lead wire 2 as shown in Fig. 2, and fixing it by caulking the neck. Regarding crimping tools.

Conventionally, this type of terminal crimping tool used pliers, which caused hands to get tired when working continuously, resulting in uneven crimping strength, and the terminals had to be manually positioned at each crimp point, which was inefficient. There was a problem. The present invention allows terminal feeding and crimping work to be performed semi-automatically using the driving force of a motor without leaving the scope of a manual tool.

Hereinafter, a description will be given based on one embodiment shown in the drawings.

In FIG. 3, the crimping tool 3 of the present invention is broadly divided into an operating section 4, a terminal supply section 5, and a driving section 6.

The actuating section 4 consists of a frame 7 and a slider 8 (see also Fig. 4), and the frame 7 has a terminal receiving surface 9 at its tip and a mounting arm 1 for the driving section 6 at the rear.
0,10. In the illustrated embodiment, a receiving groove 11 is formed in the terminal receiving surface 7. A terminal positioning tool 12 is provided on the side of the terminal receiving surface 7 (the side of the receiving groove 11).
is fixed. This positioning tool 12 is an angle-shaped piece that is screwed to the tip of the frame 7.

The slider 8 is held between both frames of the frame 7 and is slidable in the longitudinal direction of the frame. Note that the symbol 13 is a support plate that is a part of the frame and supports the lower part of the slider. The tip of the slider 8 serves as a terminal pressing surface 14, which faces the terminal receiving surface 9 of the frame 7.

In the illustrated embodiment, a pressing caulking projection 15 is provided on the terminal pressing surface 14. This protrusion 14
is fitted into the receiving groove 11 and is hardened by quenching. As shown in the figure, a relatively long female thread is formed in the front-rear direction at the rear of the slider 8, forming a female thread coupler 15 (see FIG. 8). A male threaded coupler 16 is partially screwed into this.

As shown in FIG. 9, the male threaded coupler 16 has a male thread at its front portion, and a hole having a hexagonal cross section, for example, is bored from the rear end in its rear portion to form a coupler 17 that receives rotational driving force from the driving portion 6.

Also, a flange 18 is provided at the rear. This male threaded coupler 16 is rotatably connected to the frame 7 and is engaged with a flange 18 (rotatably using a thrust bearing 19 or the like), thereby being prevented from moving back and forth.

That is, when the male threaded coupler 16 is rotated, the slider 8 moves back and forth with respect to the frame due to its screw engagement with the female threaded coupler 15. Incidentally, the coupler 17 is not limited to the hexagonal hole as described above, and may be of any configuration that can receive rotational power from the drive unit 6, such as a meshing coupling or a friction coupling.

The terminal supply unit 5 includes a base plate 21 that is engaged with the slider 8 via a spring 20 and is slidable in the front-rear direction, and a terminal wheel 23 that is supported on the base plate by a vertical shaft 22. The terminal wheel 23 has a spring 24 in its boss, and this spring 24 has one end fixed to the boss and the other end fixed to the vertical shaft 22, so that the terminal wheel 23 is always rotated in the terminal feeding direction (left in FIG. 3). rotation). Symbol 25 is a ball plunger, which is provided on the terminal wheel 23 side, and the ball at the lower end slides on the base plate 21 as the wheel rotates, and rides on the stopper on the base plate 21 when it has turned completely to the right. (Status shown in Figures 3 and 4). symbol 26
is a roll pin provided on the frame 7 that connects the base plate 2.
1's forward movement.

In addition, in the illustrated embodiment, the terminal wheel 23
is provided with an appropriate number of engagement grooves 27 on the peripheral edge (fifth
(see also figure). The engagement groove 27 has an inclined shape that opens from above and curves laterally, and is open on the outer peripheral side of the wheel 23.

The drive unit 6 is of a type in which a motor capable of forward and reverse rotation is used as a power source, and its output is provided via a torque clutch 28. Many commercially available small power tools have such a function and can be used as a drive unit. In this embodiment, a rechargeable electric screwdriver is assumed, and a driver bit 29 is attached to the tip. The driver bit 29 is inserted into and engaged with the coupler 17 (hexagonal hole) of the male threaded coupler 16.

The actuating section 4 and the driving section 6 are fixed to mounting arms 10, 10 using screws or ball plungers 30, 31.

FIG. 6 shows a terminal adapter 32 used in the illustrated embodiment, which is a resin annular plate having an appropriate number of protrusions 33 (same as the number of engagement grooves 29) on the inside, and the cross section is shown in FIG. It looks like this and holds a number of terminal heads embedded in the periphery with the necks facing down.
Needless to say, the inner diameter of the adapter 32 is approximately equal to the outer diameter of the terminal wheel 23.

The present invention has the above configuration, and the operation and operation will be described next.

First, the terminal wheel 23 is fully turned to the right in the figure, and the ball plunger 25 is placed on the stopper on the base plate 21 and stopped. Now spring 24
is tightened, biasing the terminal wheel 23 to rotate counterclockwise. Next, a terminal adapter 32 equipped with the terminal 1 is prepared, although a commercially available one may be used, and this is attached to the terminal wheel 23. This installation is performed by fitting the protrusion 33 of the adapter 32 into the engagement groove 29 of the wheel 23 from above and then rotating it laterally.

When the ball plunger 25 is loosened from this state, the terminal wheel 23 will move so that the first terminal 1 is at the stopper 1.
It rotates to the position corresponding to 2 (that is, the set position) and stops because of the stopper. Then, when the bare end of the lead wire 2 is inserted from below into the neck of the terminal 1 in the set position and the motor switch of the drive section 6 is turned on, for example, in the forward rotation direction, the driver bit 29 rotates and the male thread coupler 16 is rotated. and move the slider 8 forward. The terminal supply section 5 also moves along with the slider 8 on the base plate 21, but when the terminal 1 in the set position approaches the receiving groove 11 and reaches the caulking position, the base plate 21 comes into contact with the roll pin 26 and the terminal The forward movement of the supply section 5 is stopped. However, the slider 8 moves further forward while compressing the spring 20, and finally the pressing caulking protrusion 14 presses the neck of the terminal 1 between it and the receiving groove 11. When the caulking is completed and the resistance to the advance of the slider 8 increases, the torque clutch 28 of the drive unit 6
is activated, transmission of rotational driving force is stopped, and pressing stops. That is, one caulking operation has been completed, and since this situation can be visually recognized, the motor is then reversely rotated to return the slider 8 and the terminal supply section 5 to their original positions.

Then, connect the caulked terminal 1 to the lead wire 2.
When the terminal 1 is pulled downward, the terminal 1 can be easily removed from the resin adapter 32. This releases the stopper action that prevents the terminal wheel 23 from rotating, so the terminal wheel 23 is released from the bias of the spring 24. Then it rotates until the next terminal 1 reaches the set position and then stops.

This is one cycle of operation and caulking work. This cycle can be performed continuously with one terminal adapter 32 as many times as there are terminals installed on the terminal adapter 32.

Incidentally, the terminal wheel 23 may be fed in increments by a latch mechanism linked to the back and forth movement of the slider 8.

As described above, the present invention has the following effects.

Terminal crimping work can be performed continuously for a long period of time with the same crimping strength.

Terminal supply is semi-automatic and efficient using terminal adapters, etc. Also, you can easily replace the adapter.

A commercially available rotary power tool can be used as the drive unit, and no special drive unit is required.

[Brief explanation of drawings]

Figure 1 is a perspective view, Figure 2 is a perspective view, Figure 3 is a plan view, Figure 4 is a front view, Figure 5 is a side view, Figure 6 is a plan view, Figure 7 is the same as Figure 6. FIG. 8 is a front view, and FIG. 9 is a front view. DESCRIPTION OF SYMBOLS 1... Terminal, 2... Lead wire, 3... Crimping tool, 4... Operating section, 5... Terminal supply section, 6... Drive section, 7... Frame, 8... Slider, 9...
...Terminal receiving surface, 10... Mounting arm, 11... Receiving groove, 12... Stopper, 14... Pressing caulking projection, 15... Female threaded coupler, 16... Male threaded coupler, 17... For receiving rotational driving force. coupler, 21... base plate, 23... terminal wheel, 2
7... Engagement groove, 28... Torque clutch, 29...
...Driver bit, 32...Terminal adapter, 3
3... Engaging protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) Consisting of an actuating part, a terminal supply part, and a driving part, the actuating part has a terminal receiving surface and a terminal positioning device at the tip, and has a male screw that can be rotated at a predetermined position at the rear. A slider comprising a frame equipped with a coupler and an arm for attaching to the drive unit, a slider mounted so as to be slidable in the longitudinal direction of the frame, serving as a tip end surface and a terminal pressing surface, and a female threaded coupler combined with the aforementioned male threaded coupler. The terminal feeder is engaged with the slider via a spring, and has a base plate that slides together on the frame with a hard shaft that allows the terminal feeding wheel to rotate freely and is constantly biased in the direction of feeding the terminal. The crimping tool has a structure in which the crimping tool is supported by a shaft, and the driving part is composed of a coupler that transmits the rotational driving force combined with the male threaded coupler of the frame, and a motor that can rotate in forward and reverse directions and is equipped with a torque clutch. (2) Utility model registration claim 1, characterized in that a receiving groove is provided on the terminal receiving surface of the frame, and a pressing caulking projection is formed on the terminal pressing surface of the slider.
The crimping tool described in section. (3) The crimping tool according to claim 1 or 2, wherein the terminal feeding wheel is configured such that a terminal adapter equipped with terminals in a ring shape can be attached and replaced. (4) The drive unit is a commercially available rotary small electric tool;
The crimping tool according to any one of claims 1 to 3, wherein the coupler for the male threaded coupler is a driver bit.