JPH0545053Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a stripping tool for electrical wire coatings, and particularly to a stripping tool with improved slide shafts, movable supports, and the like.

[Conventional technology]

Conventionally, this type of stripping tool was developed using the Utility Model 59-
The one disclosed in Publication No. 36095 is known. That is, a base support having a substantially round slide shaft, a movable support fixed to the slide shaft and provided facing the base support so that it can be opened and closed, and a movable support that is pivotable to the base support. This stripping tool is composed of a cutter that has been attached, and a biting amount adjustment member that is brought into contact with the rear end of the cutter to adjust the biting amount into the wire coating.

[Problem that the invention attempts to solve]

When stripping the wire coating using the above-mentioned conventional tool, the following problems may occur.

The first problem is that the slide shaft that connects the base support and the movable support is a substantially round shaft, so if there is an accuracy error in machining or wear during use, Play tends to occur in the circumferential direction, and as a result, the contact position between the base support and the movable support may shift, which may shift the proper starting position of the cutter edge to start cutting into the wire coating, or change the amount of bite. There were some cases where the coating could not be removed.

The second problem is that conventional tools do not have a mechanism to adjust the cutting position of the cutter relative to the wire coating, so if the two supports become misaligned or the cutter's cutting edge becomes worn, I had to replace the cutter.

Furthermore, the third problem is that the cutter is pivotally mounted on the base support in a cantilevered manner, so when the coating is removed, the cutter's pivot shaft receives an uneven load, causing deflection of the shaft and wear between the cutter and the shaft. There was a risk that this would occur and interfere with the stripping work.

[Means for solving problems]

This invention solves the above problems, minimizes the misalignment between the base support and the movable support, makes it possible to adjust the cutting position of the cutter relative to the wire sheathing, and increases the rigidity of the cutter attachment part. The purpose of this invention is to provide a stripping tool that can always perform accurate stripping work, and its specific means include: (1) a base support having a flat receiving surface; and a base support fixed to a slide shaft. In a wire coating stripping tool having a movable support provided opposite to the base support, and a cutter etc. provided on the base support, the slide shaft is formed into a rectangular shape, and a predetermined position of the slide shaft is provided. includes a support plate, and the movable support is inserted and fixed by holding the support plate, and the movable support has an insertion opening for fitting into the slide shaft.
The movable support body is provided with an adjustment allowance that is movable in the direction perpendicular to the slide shaft and in the front-rear direction of the wire clamping part, while the cutter is arranged in a space of a cutter attachment part having a U-shaped cross section formed in the base support body. (2) A wire-sheathing stripping tool, characterized in that the wire-sheathing stripping tool is pivotally mounted by a pin located in the space and inserted through the space.
The present invention is constructed as a wire coating stripping tool characterized by having a wire clamping member having a letter-shaped clamping surface pivotally mounted so as to be swingable and fixed.

[Effect]

According to the stripping tool with the above configuration, the sliding shaft provided on the base support has a rectangular shape, which increases the sliding area and minimizes misalignment between the base support and the movable support due to wear etc. be able to. In addition, even if misalignment occurs, the movable support can be moved in the direction perpendicular to the slide shaft using the adjustment allowance provided between the movable support and the slide shaft, so the cut position of the cutter into the wire coating can be adjusted. can do. Furthermore, the cutter is pivotally supported at both ends by a shaft located at and inserted through the cutter mounting portion having a U-shaped cross section formed on the base support, thereby increasing its rigidity.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is an external perspective view of a peeling tool according to the present invention, FIG. 2 is a partially sectional front view, and FIG. 3 is a plan view thereof. In the figure, reference numeral 1 denotes a base support having a wire holding part 1A on one side, and a hollow guide case 2 with a bottom is provided on one side (right side in the figure) of the base support. As shown in FIG. 4, the main frame 3 is formed integrally with the main frame 3 which fits into a recess formed in the base support 1. A spring 4 is housed inside the guide case 2, and this spring 4 is locked to a pin 5 inserted through the bottom of the guide case 2, and the other end is connected to a rectangular slide shaft 6 that slides inside the guide case 2. The spring pin 7 inserted through the end of the slide shaft 6 is engaged with the spring pin 7 to bias the slide shaft 6 to the right in the figure. Also, guide case 2
As shown in FIG. 3, an elongated hole 2A is formed in the upper surface in the longitudinal direction, and one end of the spring pin 7 protrudes from this elongated hole 2A, and the pin 7 comes into contact with both ends of the elongated hole 2A. At this time, the slide shaft 6 reaches its maximum stroke. In the concave portion of the base support 1 and on the main frame 3, there is a lock block 8 as shown in FIGS.
This lock block 8 has a fixed handle 10.
A screw 10A integrated with the screw 10A is screwed in, and the tip of the screw comes into contact with the slide shaft 6 as shown in FIG. In addition, the base support 1
A cutter mounting portion 1B having a U-shaped cross section is formed on one side of the cutter, and a cutter 11 is pivotally attached to this U-shaped space by a spindle pin 12 inserted through the space. The cutting edge of the cutter 11 is biased by a spring 13 wound around the pin 12 so that it projects obliquely to a substantially central position of a substantially U-shaped holding portion 23A of a movable support 23, which will be described later. It also has a predetermined lead angle with respect to the axis of the clamping part, and is provided so as to abut perpendicularly and tangentially to the coated peripheral surface of the clamped electric wire. The cutting edge of the cutter 11 is formed in a semicircular arc shape to make it easier to bite into the wire sheathing, and after biting, the cutting edge moves automatically to cut into the axial direction of the sheathing.

On the other hand, the cutter mounting portion 1B formed in the U-shape is provided with a biting amount adjusting member 14,
This adjustment member 14 includes a spindle pin 16 that is press-fitted into the base support 1 and is prevented from coming off by a spin rig pin 15, and a spring 17 attached to the pin 16.
Adjustment knob 18 rotatably inserted through the
and a multistage cam 19 that is integrally formed with the adjustment knob 18 and located in the U-shaped space. The amount of bite can be adjusted. Further, reference numeral 20 is a rigid ball that is fitted with the multi-stage cam 19 to lock the cam 19 so that it does not easily rotate after the biting amount is adjusted. In addition, as shown in FIG. 4, a flat base plate 21 that serves as a receiving surface for electric wires is attached to the clamping portion 1A of the base support 1 by screws 2.
It is fixed by 2.

On the other hand, a rectangular slide shaft 6 protruding on the opposite side of the guide case 2 is provided with a movable support body 23 facing the base support body 1, and this movable support body 23 has a substantially U-shaped shape. Clamping part 2
3A is the base plate 2 of the base support 1;
1, and the electric wire is held between this holding part 23A and the base plate 21. The manner in which the movable support body 23 is attached to the slide shaft 6 is as follows: After the support plate 24 is inserted and clamped into the space of the movable support body 23 formed in a U-shaped cross section, the slide shaft 6 is inserted and the movable support body 23 is attached. 23 is brought into contact with the base support 1. The support body 24 and the movable support body 23 are fixed in the axial direction of the slide shaft 6 by inserting spring pins 25 and adjustment screws 26 as shown in FIG. It is fixed with screws. Therefore, the movable support 23
When the slide shaft 6 is expanded as shown by the two-dot chain line in FIG. 2, the slide shaft 6 comes to slide inside the guide case 2 against the spring 4 inside the guide case 2.
Also, after expanding and clamping the electric wire, fix the handle 1.
It can be fixed at any position by tightening 0.

Incidentally, the support plate 24 is fitted into the rectangular slide shaft 6 with a tight fitting allowance, but there is no fitting in the fitting opening of the movable support 23 as shown in FIG. A gap S is formed in which the movable support body 23 can move in a direction perpendicular to the slide shaft 6 (in the vertical direction in the figure). This gap S is such that when the electric wire is clamped by the clamping part 23A, the cutter 11
This is an adjustment allowance for adjusting the cutting start position of the wire sheathing, and the adjustment is made by loosening the fixing screws 27, 27 and then rotating the adjusting screw 26. That is, as shown in FIG. 5, when the adjustment screw 26, which is inserted in a rotatable state and is prevented from coming off by a spring pin 28, is rotated, the adjustment screw 26 screws through the slide shaft 6 and rotates. Since the tip end is in contact with the movable support 23, the slide shaft 6 is screwed and moves by the gap S. Therefore, the movable support body 23 has moved on the support plate 24 by the distance S relative to the slide shaft 6. At this time, the support plate 24 fitted into the movable support body 23 is of course fixed to the slide shaft 6.

As the movable support 23 moves, the positional relationship between the cutter 11 provided on the base support 1 and the electric wire also shifts as shown in FIG. That is, the base support 1 and the movable support 23
By moving the movable support 23 as shown by the two-dot chain line in the figure and shifting the position where the electric wire 29 is clamped, the cutting start position of the cutting edge of the cutter 11 with respect to the electric wire 29 held between them can be adjusted within the range of the adjustment allowance S. It becomes possible to adjust the

In addition to the method described above, the method of adjusting the cutting start position can also be performed by, for example, the method shown in FIGS. 7 to 9. In other words, in the one shown in FIG. 7, a clamping member 31 is pivoted to the wire clamping portion of a movable support 30 fixed to a slide shaft 6 so that it can swing and be fixed about a shaft 32 as a fulcrum. When moving the clamping position, move the clamping member 3 as shown by the two-dot chain line in the figure.
By moving 1, an adjustment margin S is formed.

Moreover, the ones shown in FIGS. 8 to 9 are examples in which the cutter itself is moved. That is, the eighth
As shown in the figure, a convex step is formed on one side of the base support 34, and a U-shaped cutter support bracket 35 is fitted into this step and both are fixed with screws 36, 36. Cutter 11 is bracket 35
It is pivotally connected to by a pin 37. In addition, the screw 36,
Although not shown, the cutter support bracket 35 can be moved up and down on the convex step by loosening the screws 36, 36. It's getting old. Therefore, if the bracket 35 is moved, the cutting edge of the cutter 11 will be moved by a predetermined distance S as shown by the two-dot chain line in FIG. The position of the cut relative to the coating can be adjusted.

[Effect of idea]

As is clear from the above explanation, the peeling tool of the present invention provides the following effects.

(1) The rectangular shape of the slide shaft significantly reduces the occurrence of rattling compared to the conventional round shape.As a result, it is possible to perform reliable and stable stripping work, and the life of the tool is extended. It can be stretched.

(2) By providing the movable support with an adjustment allowance that can be moved perpendicularly to the slide shaft, it is possible to adjust the position at which the cutter starts cutting into the wire sheathing, thereby reducing the risk of wear and tear on the cutter cutting edge. Even if backlash occurs, the cutting position can always be adjusted to the optimum position, which lengthens the cutter replacement cycle and saves resources and costs.

(3) Since the cutter is pivotally supported on both sides by pins on the mounting part with a U-shaped cross section formed on the base support, it has higher strength and rigidity than conventional cantilever cutters, and therefore reduces pin wear. The cut position of the cutter relative to the wire sheathing will not shift due to bending.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the peeling tool of the present invention, Figure 2 is a perspective view of the peeling tool of the present invention;
The figure is a partially cutaway front view, Figure 3 is a plan view, Figure 4 is a sectional view taken along the line X-X in Figure 2, and Figure 5 is a cross-sectional view of Figure 1.
6 is a diagram illustrating the movement of the movable support in the wire holding portion, and FIGS. 7 to 9 are diagrams showing other embodiments of the present invention. 1...Base support body, 2...Guide case, 3
... Main frame, 6 ... Square slide shaft, 10 ... Fixed handle, 11 ... Cutter,
14... biting amount adjusting member, 23... movable support body,
24...Support plate, 26...Adjustment screw.

Claims (1)

[Claims for Utility Model Registration] (1) A base support having a flat receiving surface, a movable support fixed to a slide shaft and provided opposite to the base support, and a movable support provided on the base support. In the wire coating stripping tool having a cutter or the like, the slide shaft is formed into a rectangular shape, and a support plate is provided at a predetermined position of the slide shaft, and the movable support body is fitted with the support plate held between the slide shafts. The movable support is inserted into the slide shaft.
The movable support body is provided with an adjustment allowance that is movable in the direction perpendicular to the slide shaft and in the front-rear direction of the wire clamping part, while the cutter is arranged in a space of a cutter attachment part having a U-shaped cross section formed in the base support body. 1. A wire sheath stripping tool, characterized in that the tool is pivotally connected by a pin located in the space and inserted through the space. (2) Utility model registration claim 1, characterized in that an electric wire clamping member having a substantially U-shaped clamping surface is pivotally mounted to the electric wire clamping part of the movable support so as to be swingable and fixed. The wire coating stripping tool described in .