JPS641745Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Technical field of the invention The invention relates to a hand tool used for crimping a pressure contact terminal for cable connection.
This invention relates to a press-contact terminal feeding mechanism that is linked to the opening/closing operation of a handle.

(2) Prior art and its problems As a pressure contact terminal, a flat pressure contact terminal 1 as shown in FIG. 1, for example, is conventionally known. Such a pressure contact terminal 1 has a flat insulating block 2 that is thin vertically and long horizontally, with a large number of slots 3 provided at predetermined intervals, and an open barrel-shaped terminal 4 arranged in each slot 3. . When connecting the cable 5 to the terminal 4, the cable 5 is pressure-welded using an automatic machine. However, the automatic machines described above are large in size and cannot be used at work sites. At present, there are no hand tools that can be easily operated and pressure-welded at the work site.

In order to eliminate the above-mentioned drawbacks, we have developed a crimping tool in which a terminal holder is attached so as to be slidable in the left-right direction across the crimping part formed by moving the crimping teeth up and down. In this crimping tool, the crimping operation was carried out by manually feeding the terminal holder with the crimping terminal mounted one frame at a time, so it was desired to develop an automatic terminal feeding mechanism.

(3) Purpose of the invention The present invention has been further developed in view of the above-mentioned circumstances, and is capable of feeding press-welding terminals accurately one frame at a time in synchronization with the opening/closing operation of the handle, and is easy to operate. The ability to perform continuous crimping work
That is the purpose.

(4) Features of the invention The features of the feeding mechanism of the crimping tool according to the present invention to achieve the above object are that the crimping tool moves up and down by opening and closing the handles, and is connected to the main body block. A crimping part formed between the crimping part, a terminal holder for attaching a pressure contact terminal that is slidably mounted in the left and right directions across the crimping part, and the terminal holder is positioned at predetermined pitches at the crimping position of the handle. A positioning and moving mechanism comprising a moving lever member and a feed block, and a positioning and moving mechanism provided in the round hole of the terminal holder and the crimp teeth for locking the positioning and moving mechanism between the crimping start position and the crimping release position of the handle. The lock mechanism includes a pilot pin that engages in a round hole.

The present invention will be explained below based on the drawings showing one embodiment thereof.

(5) An embodiment of the invention The drawings from Fig. 2 onwards show an embodiment of the crimping tool according to the invention, in which Fig. 2 is a front view of the same, Fig. 3 is an exploded view of the same, and Fig. 4 is a view of the same. 5 is a sectional view taken along the line V-V in FIG. 4, and FIGS. 6A to 6E are explanatory diagrams of the operation stroke of the feeding mechanism.

The crimping tool consists of a main body block 10 constituting a crimping receiving part, a pair of frames 20 constituting a handle pivotally attached to this main body block 10, and a pair of frames 20 that can be moved up and down relative to the main body block 10 by opening and closing operations of the frames 20. a movable crimp tooth 40; a terminal holder 50 that slides in the left-right direction across the crimp receiver;
It consists of a positioning and moving mechanism 60 that positions and moves this terminal holder 50 at every predetermined pitch, and a locking mechanism 70 that locks this positioning and moving mechanism 60.

To be more specific, the main body block 10 has a through hole 11 formed in its upper and lower sides, a recess 12 that exposes the through hole 11 on the front surface thereof, and a recess 12 that exposes the through hole 11 in the middle part of the back surface. A long hole 13 communicating with the hole 11 is provided. The recessed portion 12
1 has a substantially L-shaped substrate section 1 at its bottom when viewed from the side.
4 and a regulating wall 15 protrudes above it, a slightly recessed step 16 is formed below it, and a notch hole 17 is formed on the left side of the step 16.
The substrate portion 14 constitutes a crimp receiving portion between the crimp tooth 40 that moves up and down from above, and a guide pin 18 is erected approximately at the middle portion of the upper surface thereof. Frame holes 19, 19 are provided below the substrate portion 14.

The pair of frames 20, 20 have a channel shape, and have their openings facing each other, and their upper ends are pivoted through the holes 19, 19 with pins 21, 21 inserted therein. The frames 20, 20 have pins 2 in holes 22, 22 provided at a position away from their upper ends.
3, 23 and one end of the link plates 24, 24 is pivotally connected to the link plates 24, 24.
The other end is pivotally attached to a thin plate portion 26 at the lower end of the slide rod 25 by inserting a pin 27 therethrough. 28A in the figure,
28B and 28C are retaining rings for each of the pins 21, 23, and 27. Springs 29, 29, which are hung around pins 23, 23, are engaged between the link plates 24, 24 and the frames 20, 20, and normally urge the frames 20, 20 to the open position.
The slide rod 25 is mounted in the through hole 11 so as to be movable up and down, and a female threaded hole 31 is provided in a notch 30 on the front surface of the upper portion thereof. Also, frame 2
In the opening near the lower end of 0,20, there is an adjustment nut 3.
A crimping height setting mechanism consisting of a pushing bar 33 with two attachments, a female threaded portion 34 and a receiving member 35 is provided. The crimp height is set by loosening the adjustment nut 32, screwing the pushing bar 33 into the female threaded portion 34, moving the tip of the bar forward or backward, and then tightening the adjustment nut 32 again.

The crimping teeth 40 are arranged on each barrel piece 4a of the terminal 4,
Two teeth 40 with different shapes and heights corresponding to 4b
A and 40B, and is fixed to the notch 30 via a tip holder 41. Chip holder 4
1 has a substantially inverted L-shape, and the hexagon socket head bolt 42 is inserted into the insertion hole 43 penetrating through the holding part and screwed into the female threaded hole 31, and the through hole on the upper and lower left side of the holding part is inserted. 44 has a pilot pin 81, which will be described later, protruding downward. Therefore, the crimp teeth 40 and the pilot pin 81 are interlocked with the vertical movement of the slide rod 25. The head 45 of the tip holder 41 is projected so as to come into contact with the restriction wall 15.

The terminal holder 50 has a plate shape that is vertically thin and horizontally long, and has a mounting groove 5 for a pressure contact terminal on its top surface.
1 has guide grooves 52 passing through its lower surface from left to right, respectively. Furthermore, the terminal holder 50 is integrally formed with a reinforcing piece 53 extending upward in a substantially L-shape when viewed from the side on one side in the length direction. A long groove 54 is formed in the reinforcing piece 53 along the front surface thereof. On the other hand, stoppers 55 and 56 are provided in the width direction of the terminal holder 50, respectively. The stoppers 55, 56 have screws 57 in both width directions.
57 to close the guide groove 52 on the lower surface,
The stopper 55 extends to its upper surface and closes the mounting groove 51 on one side in the width direction. Therefore, the pressure contact terminal 1 can be inserted into the mounting groove 51 from the mounting portion with the other side open until it comes into contact with the stopper 55. Further, since the guide groove 52 fits into the guide pin 18 of the base plate 14 of the main body block 10, the terminal holder 50 slides in the left-right direction on the upper surface of the base plate 14 and is guided until it comes into contact with the stoppers 55, 56. It is considered possible. 58 in the figure is the mounting groove 51
After the terminal is attached to the terminal, the terminal stopper closes the open side of the attachment groove 51, and is locked by engaging the ball 59 pressed by a spring to the long groove 54.

Further, the positioning movement mechanism 60 has a positioning groove 61 provided on the back surface of the reinforcing piece 53 of the terminal holder 50, and a notch hole 1 on the left side of the main body block 10.
7, a feed block 63 of this plunger 62, a spring 64 that biases this feed block 63, and a box-shaped cover 6 that holds these and is fixed to the main body block 10.
5, 66, and a lever member 67 for sliding the feed block 63 one pitch at a time against the spring 64.
and a cover 68 for the lever member 67. The positioning grooves 61 are recessed along the sliding direction at predetermined pitches corresponding to the slot intervals of the press-contact terminals 1 to be mounted, and the grooves start at least at the corresponding positions where the stoppers 55 abut against the guide pins 18. There is. The plunger 62 is
A ball 69 urged by a spring is projected from the tip thereof, is screwed into the screw hole 70 of the feed block 63, and is inserted into the positioning groove 61. The amount and strength of protrusion of the ball 69 relative to the positioning groove 61 are selected depending on the amount of screw engagement. The feed block 63 has an engaging stepped portion 71 on its left side, and an abutting portion 72 on its left end. Further, the lever member 67 has a substantially L-shape, is pivoted at its center by a shaft 73, and has a cut groove 74 at one end and a portion 75 acting on the abutment portion 72 at the other end. . A pin 76 erected on the slide rod 25 is engaged in the cut groove 74 through the elongated hole 13, and as the slide rod 25 moves up and down, the pin 76 moves up and down in the elongated hole 13, thereby forming a lever member. The operating portion 75 of 67 is swung.

Furthermore, the lock mechanism 80 includes a pilot pin 81, a spacer 82, and a terminal holder 50.
A round hole 83 is formed in the reinforcing piece 53. The spacer 82 has a rectangular parallelepiped shape that is long in the left-right direction, and a holding hole 84 for the pilot pin 81 is formed on the left side of the spacer 82 , and a holding hole 84 for the pilot pin 81 is formed on the left side of the spacer 82 .
It is fixed at the position corresponding to 6. Therefore, a guide gap for the reinforcing piece 53 of the terminal holder 50 is formed between the lower surface of the spacer 82 and the substrate portion 14. The pilot pin 81 is projected longer than the tip of the crimp tooth 40 and is inserted into the holding hole 8 of the spacer 82.
4, and is slightly spaced apart from the round hole 83 of the terminal holder 50, and enters into the round hole 83 when the frames 20, 20 are opened and closed. Round hole 83 above
are bored in the reinforcing piece 53 corresponding to the pitch of the positioning groove 61, and the holding hole 84 is opened at a predetermined position.
is consistent with In addition, 85 in the figure is a guide plate of the terminal holder 50 fixed to the front surface of the board part 14.

Next, the operation based on the above configuration will be explained.

As shown in FIGS. 2 and 6A, the crimping tool always maintains the pair of frames 20, 20 in the open position according to the spring force of the spring 29. The slide rod 25 is urged upward via the link plates 24, 24 of the frames 20, 20, and the head 45 of the tip holder 41 is pushed against the regulating wall 1.
5 and is held in position. The crimp teeth 40 are therefore in the open position. Pilot pin 8
1 has been removed from the round hole 83A and is in the unlocked position. At the same time, the lever member 67 is in the open position.

In the above position, the flat pressure contact terminal 1 is inserted into the mounting groove 51 from the open side of the terminal holder 50 and brought into contact with the positioning stopper 55, and the open side is closed with the terminal stopper 58.
After that, slide the terminal holder 50 to the left. The terminal holder 50 has a reinforcing piece 5 at the same time that the guide groove 52 is guided by the guide pin 18.
3 is guided by the spacer 82 and slides until the guide pin 18 comes into contact with the stopper 55. At the above contact position, the positioning groove 61A
Since the ball 69 of the plunger 62 is fitted into the crimping terminal 1, the first slot of the crimping terminal 1 is positioned at the crimping position of the crimping tooth 40.

Next, as shown in FIG. 6B, when the cable 5 is inserted from the front side of the first slot, the tip of the cable 5 comes into contact with the front surface 85 of the spacer 82. In the abutting position, the cable 5 is in the proper position of the terminal 4 of the first slot. After that,
When the pair of frames 20, 20 are slightly gripped from the open position to the crimping start position against the spring force, the link plates 24, 24 approach and the slide rod 25 is slightly lowered. The pilot pin 81 moves down slightly in synchronization with the crimping teeth 40, but since its tip is in contact with the round hole 83A, it enters the round hole 83A and reaches the lock position before the crimping teeth 40 start crimping. Become. In this locked position, the lever member 67 pushes back the feed block 63 slightly, but since the amount of movement is small, the plunger 62 remains fitted into the first positioning groove 61A.

As shown in FIG. 6C, further frame 2
0 and 20 to the crimping position, the slide rod 25 descends significantly. In this state, the lever member 67 largely pushes back the feed block 63, so that the plunger 62 first moves into the positioning groove 61A.
Then, it is inserted into the positioning groove 61B. However, since the pilot pin 81 further enters the round hole 83A and maintains the locked position, the crimp position of the terminal holder 50 is maintained.

As shown in FIG. 6D, frames 20, 20
When the slide rod 25 is opened following the springs 29, 29, the slide rod 25 rises. In this state, the crimping is released, but the pilot pin 81 is inserted into the round hole 8.
3A, so the lock position continues. The locked position is maintained until just before the crimping is released.

As shown in FIG. 6E, frames 20, 20
When released, the frames 20, 20 move according to the spring force.
Since the crimp teeth 40 and the pilot pin 81 return to the open position, the crimp teeth 40 and the pilot pin 81 synchronize to the open position. In the open position, the lock is released, and the feed lock 63 moves the engagement step 71 into the notch hole 1 by the force of the spring 64.
Slide until it touches the side of 7. Along with this sliding, the terminal holder 50 slides to the next positioning groove 61B. The plunger 62 of the feed block 63 moves to the next positioning groove 6.
It is inserted into 1B. In the next positioning groove 61B, the terminal is next positioned on the crimping tooth 40, so the crimping work is performed in sequence in the same manner as above.

As explained above, according to the above embodiment,
The stopper 55 allows the initial position of the terminal holder 50 and the mounting position of the pressure contact terminal 1 to be determined accurately. Particularly in actual operation, slide the terminal holder 50 so that it comes into contact with the stopper 44,
Since the pressure contact terminal 1 only needs to be inserted into the mounting groove 51 and brought into contact with the positioning stopper 55, the workability is good.

Further, since the tip holder 41 is provided with the crimping teeth 40 and the pilot pin 81, there is an advantage that the timing of crimping and locking can be set accurately.

(6) Other embodiments of the invention The positioning mechanism is not limited to the above-mentioned embodiment, but can be changed to a structure in which the terminal holder 50 is provided with a plunger 62 and the feed block 63 is provided with a positioning groove 61. Furthermore, although the terminal holder 50 has been illustrated and described as sliding from left to right, the design can be changed to a configuration in which it slides from right to left.

Furthermore, although the pressure contact terminal shown in FIG. 1 is illustrated, if it is a chain type pressure contact terminal, the mounting groove 5
By changing the shape of 1, any terminal can be implemented.

(7) Effects of the invention As explained above, the invention provides the following effects.

We were able to provide a tool that can perform crimping work by continuously feeding pressure-welding terminals. In this case, once the pressure contact terminal is attached, the terminal holder can be slid in conjunction with the opening/closing operation of the handle, and operations can be performed sequentially without removing the pressure contact terminal.

Since the terminal holder is positioned and slid at predetermined pitches at the crimping position of the handle, the feeding mechanism does not work unless the terminal is completely crimped, and there is no malfunction.

Since the slide of the terminal holder is locked between the crimping start position and the crimping release position of the handle, the terminal holder can be slid after the crimping teeth are separated from the terminal, and damage to the crimping teeth can be prevented.

[Brief explanation of the drawing]

Figure 1 of the drawings is a perspective view showing a flat pressure contact terminal;
Fig. 2 and subsequent figures show one embodiment of the feeding mechanism of the crimping tool according to the present invention, Fig. 2 is a front view of the same, Fig. 3 is an exploded perspective view of the same, Fig. 4 is a rear view of the same main parts, and Fig. 5 is a front view of the same. The figure is V
-V line sectional view and FIGS. 6A to 6E are explanatory diagrams of the same operation. 1... Flat pressure contact terminal, 5... Cable, 10
... Main body block, 12 ... Recessed part, 13 ... Board part, 15 ... Stepped part, 16 ... Screw hole, 17 ... Guide pin, 20 ... Pair of frames, 24 ... Slide rod, 40 ... Crimp tooth, 41... Chip holder, 44... Through hole, 50... Terminal holder, 60
...Moving mechanism, 61, 61a, 61B...Positioning groove, 62...Plunger, 63...Feeding block, 64...Spring, 67...Lever member, 69...
Ball, 73... shaft, 74... kerf, 76... pin, 80... lock mechanism, 81... pilot pin, 83, 83A... round hole, 84... holding hole.

Claims (1)

[Scope of utility model registration request] A pair of handles, a crimping part formed between the main body block by moving the crimping teeth up and down by opening and closing the handles, and a crimping part that intersects with the crimping part and is slidable in the left and right direction. A positioning and moving mechanism comprising a terminal holder for mounting a terminal, a lever member and a feed block for positioning and moving the terminal holder at predetermined pitches at the crimping position of the handle, and a positioning and moving mechanism for positioning and moving the terminal holder at a crimping position of the handle. A feeding tool for a crimping tool, characterized in that it is equipped with a locking mechanism consisting of a round hole in the holder that locks from a starting position to a crimping release position, and a pilot pin that is provided on the crimping tooth and engages in the round hole. mechanism.