JP2000357576A - Compression tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the strength of a compression tool against compressive force and reduce the force applied to the handle. SOLUTION: This compression tool has a frame having a first and a second jaws, a first die mounted on the frame at either of these jaws, and a second die 16 mounted on the frame opposite the first die and cooperating with the first die. The second die 16 contains the lower mounting part 54 to be mounted to the frame and the upper part 56 having at least one of compression surfaces 68, and has at least one of supporting parts 58a, 60a extending sideways from the side of the upper part 56 and abutting on the edge of the frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a tool having a rotary die.

[0002]

2. Description of the Related Art U.S. Pat. No. 5,211,050 discloses a detent mechanism for adjusting the position of a rotatable die. This mechanism has a ball biased by a strap.
The strap is attached to the frame between the pivot pin and another pin. U.S. Pat. No. 4,926,865 discloses a die that can be repositioned on an axle that can move longitudinally. This axle is biased by a coil spring.

However, in the former structure, two pins are indispensable for urging the ball, which complicates the structure and increases the number of parts. In the latter structure, the coil spring has a disadvantage. Due to the existence, there was a disadvantage that the ball could not be arranged close to the pivot pin and a compact design could not be achieved. Further, with the demand for increasing the compressive force, it is necessary to provide a structure that can withstand a large compressive force.

[0004]

According to one aspect of the present invention, a frame having first and second jaws and a first die attached to the frame at one of the jaws is provided. A compression tool, comprising: a second die mounted on the frame opposite the first die and cooperating with the first die, wherein the second die is mounted on the frame. A compression tool is provided that includes a lower mounting portion and an upper portion having at least one compression surface and that includes at least one support portion extending laterally from a side surface thereof and abutting against an edge of the frame.

In the above-mentioned compression tool, if the second die has at least one side supporting portion extending from the first side surface, the side supporting portion has a lower surface abutting on the frame. It is effective. Also, the second die is
There may be at least one rear support disposed behind the side surface, the rear support having a rear surface abutting the frame. In this case, the rear support portion may have a lower surface that contacts the frame.

In the above-mentioned compression tool, the compression surface is
It may have a substantially V-shaped recess. In this case,
The second die comprises at least one rear support and at least one side support, which are laterally spaced apart from each other on both sides of the substantially V-shaped recess. It may be composed of a projecting protrusion. It is also effective if the V-shaped recess has a central axis inclined with respect to an axis perpendicular to the opposing surfaces of the first and second jaws.

[0007] Furthermore, a die wheel in which the first die is rotatably connected to the frame by a pivot pin, and a positioning system for positioning the die wheel in a predetermined rotation position on the frame in a non-rotation state. With
The positioning system may include a ball and a spring that biases the ball toward a die wheel. In this case, the spring may be attached to the frame only by the pivot pin.

[0008] The positioning system may also include a washer on the pivot pin urged against the ball by a spring. Further, the second die may include a separate support comprising side protrusions for dispersing the compressive force applied to the die.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS The above aspects and other features of the present invention will be described in the following description made with reference to the accompanying drawings. FIG. 1 is a perspective view showing a tool having features of the present invention. FIG. 2 is a front view showing a part of the tool shown in FIG. FIG. 3 is an exploded perspective view showing a part of the tool shown in FIG. FIG. 4 is a partial perspective view showing the lower die of the tool shown in FIG. FIG.
FIG. 4 is a side view showing a part of the tool shown in FIG. FIG. 6 is a perspective view illustrating some embodiments of a spring used with the tool detent system shown in FIG.

FIG. 1 shows a tool 1 having features of the present invention.
0 is shown. Although the present invention will be described with reference to a single embodiment shown in the drawings, it should be noted that the present invention can be embodied in many other embodiments. Furthermore, any suitable size,
Shapes or member types or materials can also be used.

The tool 10 generally includes a frame 12, a variable position die 14, and a fixed die 16. The tool 10 is a manual compression tool for caulking a connector to a conductor. However, in other embodiments,
The features of the invention can be used in other types of tools. Compression tool 10 is similar to the tool disclosed in U.S. Pat. No. 5,211,050, which is incorporated herein by reference. Frame 12
Has an upper frame part 18, a lower frame part 20, and a lower handle part 22.

The lower frame 20 is rotatably connected to the upper frame 18 by a rotating shaft 24. The lower frame part 20 is rotatably connected to the lower handle part 22 by a rotation shaft 26. The lower handle 22 is connected to the upper frame 18 by a connecting rod 28. In other embodiments, other types of frame configurations may be provided.

The position variable die 14 is, in this embodiment,
It is a die wheel rotatably attached to the upper frame portion 18. In other embodiments, the die 14 may have a different shape than a typical rotatable wheel, and may be mounted on the upper frame portion for sliding and / or rotational movement; Alternatively, it may be attached to the lower frame part.

The die wheel 14 has five differently sized compression regions arranged on its peripheral surface for compressing five different sized connectors. FIG.
Referring to, the upper frame portion 18 comprises two frame pieces 30, 31 interconnected at a distance by a spacer 32. The die wheel 14 is arranged between these two frame pieces 30, 31.
The pivot pin 34 connects the die wheel 14 to the frame piece 30,
31 is rotatably mounted.

FIG. 3 is an exploded perspective view of a part of the tool shown in FIG. The tool 10 is mounted on the upper frame 18 at a predetermined rotational position.
Is provided with a positioning system for placing the in a non-rotating state. The positioning system includes a spring 36,
A washer 38 and a ball 40 are provided.

The die wheel 14 has five seats 42 provided on a side wall around a center mounting hole 44. Each seat 42 is provided for each compression area on the peripheral surface of the die wheel 14. The frame piece 30 is provided with a hole 46 for disposing the ball 40 therein. The ball 40 contacts the side wall of the die wheel 14 and the washer 38 on both sides of the frame piece 30.

In this embodiment, the washer 38 is a flat hard washer. The spring 36 is disposed between the washer 38 and the head of the pivot pin 34. In this embodiment, the spring 36 is a spring washer, and more particularly,
It is a curved washer. However, in another embodiment, the spring washer is the countersunk washer 36a of FIG.
The wave washer 36b shown in FIG. 6B or the spring 3 shown in FIG.
A spiral wire formed as 6c may be used.

Due to the generally ring-like shape of the spring 36, the spring can be attached to the shaft portion 50 of the pivot pin 34. Therefore, the spring 36 can be attached to the frame only by the pivot pin 34.

The spring 36 urges the washer 38 toward the frame piece 30 and the ball 40 toward the die wheel 14 in the assembled state. When the ball 40 is aligned with one of the seats 42, the ball is protruded into the seat 42 to maintain the rotational position of the die wheel 14 with respect to the upper frame portion 18 in a detented condition. .

When the user manually rotates the die wheel 14 with respect to the upper frame part 18, the ball 4
0 is pushed outward in the lateral direction so that the ball comes off the seat 42. The ball 40 presses the washer 38 outwardly by the elastically deformed spring 36. When the other seat 42 is aligned with the ball 40, the spring 36 again moves the washer 38 inward in the lateral direction, and the washer 38 pushes the ball 40 inward in the lateral direction. Then, the die wheel 14 is pushed into a new seat so as to be arranged in a state where the die wheel 14 is stopped from rotating with respect to the upper frame portion 18. By moving the ball 40 inside the seat 42, the user can feel and hear that the die wheel has been placed in one of the appropriate rotational positions for compression.

Unlike the invention described in US Pat. No. 4,926,685, the present invention does not require the user to manually depress the pivot pin before allowing the die wheel to rotate. Unlike the invention described in U.S. Pat. No. 5,211,050, the mounting of the spring requires only a main support pin and does not require an additional mounting pin.

In addition, unlike the invention described in US Pat. No. 5,211,050, the prior art tool is capable of positioning the ball close to the pivot pin, thus eliminating the need for four dies due to space and size limitations. A more compact design can be provided that allows the die wheel to have five die grooves (compression regions) while only having grooves.

In addition to providing a compact design and allowing the die wheel to have five die grooves, by bringing the compression area closer to the main support pin 24, the dies 14, 16 Higher compression force on the interposed connector, or
The advantage is that less force is applied to the handle during compression. The closer the dies 14, 16 are located to the main support pins 24, the greater the mechanical benefits.
As a result, the range of application can be increased, and the force on the handle required by the user can be reduced.

FIGS. 1 and 4 are perspective views of the lower die 16. The lower die 16 is connected to the lower
At 0, it is fixedly mounted by a pin 52. The lower die 16 is disposed generally opposite the die wheel 14 to compress the connector disposed therebetween.

The lower die 16 generally includes a lower portion 54
An upper portion 56 and two laterally extending supports 58
a, 58b and two laterally extending rear supports 60a,
60b. The lower frame part 20 includes:
It has two frame portions 62,64.

The lower portion 54 of the lower die 16 is located between the two frame portions 62,64. The lower portion 54 has a hole 66 for receiving the pin 52.
The upper portion 56 of the lower die 16 has a compression surface 68 that contacts the connector to be compressed.

Two laterally extending supports 58a, 58b
Are approximately mirror-symmetric to each other, but extend laterally from both sides of the die. Each support 58a, 58b has a lower surface 70 that abuts an edge of a lower frame portion 62, 64 that faces directly toward the die wheel 14 during compression.

These surfaces 70 apply the forces received during compression,
It assists in transmitting to the lower frame portion 20 through the lower die 16 rather than simply through the pins 52. Each rear support 60a, 60b has a lower surface 72 and a rear surface 74. These surfaces 72, 74 also assist in transmitting the forces generated during compression to the lower frame portion 20. In other embodiments, the lower die may have other or additional supports or compressive force transmission means.

Referring to FIG. 5, the supporting portions 58a, 58
It can be seen that b, 60a, and 60b increase the strength of the fixed die 16 to withstand the compressive force without being destroyed by the compressive force. In order to further reduce the risk of breakage of the stationary die 16, the compression axis A is arranged at an angle.

Therefore, the compression force is reduced by the inclined compression axis A.
For this purpose, the force on each of the surfaces 66, 70, 72 and the force on the surface 74 is divided. This division or distribution of the compressive force reduces the stresses that occur on the stationary die 16 in the direction B by transferring some force in the direction C (see FIG. 4). In addition to this, the main support pin 24 and the shaft are used to increase the mechanical effect of the tool handle so as to reduce the force on the handle required for compression and to expand the range of connectors that can be compressed by the increased force. The distance D between the support pins 34 is increased.

It is noted that the above description is only for illustrating the present invention. It is envisioned that those skilled in the art may make various modifications and changes without departing from the scope of the invention. Accordingly, the present invention is intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a tool having features of the present invention.

FIG. 2 is a front view showing a part of the tool shown in FIG.

FIG. 3 is an exploded perspective view showing a part of the tool shown in FIG. 2;

FIG. 4 is a partial perspective view showing a lower die of the tool shown in FIG. 1;

FIG. 5 is a side view showing a part of the tool shown in FIG. 1;

6 is a perspective view illustrating some embodiments of a spring used with the tool detent system shown in FIG. 1. FIG.

[Explanation of symbols]

 12 frame 14 die wheel (first die) 16 fixed die (second die) 36 spring 38 washer 40 ball 50 pivot pin 54 lower part (lower mounting part) 56 upper part 58a, 58b side part support part ( Supporting portions) 60a, 60b Rear supporting portion (supporting portion) 68 Compression surface 70, 72 Lower surface 74 Back surface

 ──────────────────────────────────────────────────続 き Continued on front page (72) Inventor Armand Tea. Montminy United States New Hampshire 03104 Manchester, Oak Street 503

Claims (11)

[Claims] 1. A compression tool comprising: a frame having first and second jaws; and a first die attached to the frame at one of the jaws, wherein the first die is A second die (16) attached to the frame opposite to the first die and cooperating with the first die, the second die including a lower mounting portion (54) for mounting to the frame. , An upper portion (56) having at least one compression surface (68) and extending laterally from a side thereof and abutting against an edge of the frame (58a, 58b, 60a, 60b). A compression tool comprising: 2. The at least one side support (58a, 58b) wherein said second die extends from a first side thereof.
The tool according to claim 1, characterized in that the side support has a lower surface (70) abutting the frame. 3. The device according to claim 1, wherein said second die has at least one rear support (60a, 60) disposed behind its side.
3. The tool according to claim 1, comprising b), wherein the rear support has a back surface (74) abutting the frame. 4. The rear support portion (60a, 60b)
The tool according to claim 3, having a lower surface (72) abutting the frame. 5. The tool according to claim 1, wherein the compression surface has a substantially V-shaped recess. 6. The second die comprises at least one rear support (60a, 60b) and at least one side support (58a, 58b), wherein the supports are substantially V-shaped. 6. A projection formed on both sides of the U-shaped concave portion so as to protrude laterally with an interval therebetween.
Tools described in. 7. The V-shaped recess includes the first and second recesses.
The tool according to claim 5 or 6, wherein the tool has a central axis inclined with respect to an axis perpendicular to an opposing surface of the jaw. 8. A die wheel (14) rotatably connected to the frame by a pivot pin (50), and the first die stops rotation of the die wheel at a predetermined rotational position on the frame. And a positioning system for positioning the ball (4).
The tool according to any one of claims 1 to 7, comprising a spring (36) for urging the ball toward the die wheel. 9. The tool according to claim 8, wherein the spring is attached to the frame only by a pivot pin. 10. The positioning system includes a washer (3) on a pivot pin biased against the ball by the spring.
The tool according to any one of claims 8 and 9, further comprising (8). 11. The second die further comprising separate supports (58a, 58b, 60a, 60b) comprising side protrusions for dispersing a compressive force applied to the die. The tool according to any one of claims 1 to 10, wherein the tool is used.