Wire stripper

Abstract

The present invention provides a wire stripper A capable of stripping the coating E without damaging the core wire F. [Solution] In a Cartesian coordinate system where the front-to-back direction of the wire stripper A is the first direction, the up-and-down direction of the wire stripper A is the second direction, and the left-to-right direction of the wire stripper A is the third direction, immediately after the contact portions 30 of each arm B1 and B2 come into contact, the cutting trajectory 21, which consists of a virtual line connecting the edge of the recessed blade 20 of one arm B1 and the edge of the recessed blade 20 of the other arm B2, is configured to exhibit an elliptical shape when viewed from the third direction, with the first direction as the minor axis and the second direction as the major axis. This allows the coating E to be stripped without damaging the core wire F, even if the wire is tilted during the cutting operation of the coating E. Furthermore, by providing a mechanism in which the recessed blades 20 on each arm B1 and B2 move closer together and then further apart as the gripping operation of the handle 10 progresses, the possibility of contact between the recessed blades 20 and the core wire F during the pulling operation of the coating E can be further reduced.

Description

Technical Field

[0001] The present invention relates to a wire stripper for peeling a covering portion from a wire such as an electric wire cable to expose a core wire, and more particularly to a wire stripper capable of peeling the covering portion without damaging the core wire.

Background Art

[0002] A wire stripper is provided with a plurality of cutting blades (hereinafter referred to as "depression blades") each having a substantially semi-circular depression corresponding to the size of a wire on each of a pair of arms connected so as to be openable and closable. By sandwiching the wire with these depression blades to make a cut in the covering portion and then pulling out the covering portion in the axial direction of the wire as it is to peel it off, the core wire is exposed. The wire stripper has two types: a "nipper type" in which the depression blades abut against each other and a "scissors type" in which the depression blades overlap each other alternately in the left-right direction of the wire stripper.

[0003] As shown in FIG. 11, in the scissors-type wire stripper having a conventional structure, the shape of the depression blade b is designed so that the cutting locus formed by the ridge lines of the paired depression blades becomes a perfect circle when viewed from the left-right direction of the paper surface in FIG. 11 (the left-right direction of the wire stripper). [[ID=B]]When trying to peel the covering portion c1 of the wire c to expose the core wire c2 using this wire stripper, if the covering portion c1 is pulled out in the left-right direction of the wire stripper, the covering portion c1 can be pulled out without the depression blade contacting the core wire c2. However, in reality, as described above, since the depression blades overlap each other alternately, the wire c sandwiched between the depression blades may tilt in the counterclockwise direction of the paper surface in FIG. 11, and thus the covering portion c1 may be pulled out in this tilted direction in some cases. At this time, since the distance between the depression blades b when viewed from the pulling-out direction becomes narrower than the distance between the depression blades b when viewed from the left-right direction of the wire stripper, there is a problem that the depression blade b contacts the core wire c2 passing through during the pulling out of the covering portion c1 and damages the core wire c2.

[0004] One way to solve this problem is for the applicant to have conceived a structure in which, after the recessed blades come closer together when the user closes the handle (gripping motion) to make a cut into the coating, the recessed blades are separated again when the handle is closed (gripping motion) to make a cut, thereby reducing the possibility of contact between the recessed blades and the core wire during the subsequent removal of the coating (Patent Document 1). [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Patent No. 7650531 [Overview of the project] [Problems that the invention aims to solve]

[0006] One of the objectives of the present invention is to provide a wire stripper that can remove the coating without damaging the core wire, using a method different from the structure described in Patent Document 1. [Means for solving the problem]

[0007] The wire stripper according to the present invention is a wire stripper in which two intersecting arms are connected via a pivot axis so as to be openable and closable, and each arm is provided with at least a handle provided on the rear end side of the arm from the pivot axis, a recessed blade provided on the front end side of the arm from the pivot axis, and a contact portion provided on the front end side of the arm from the recessed blade, which can come into contact with each other when the handle is closed, and in a Cartesian coordinate system, when the front-to-back direction of the wire stripper is the first direction, the up-and-down direction of the wire stripper is the second direction, and the left-to-right direction of the wire stripper is the third direction, the cutting trajectory, which consists of an imaginary line connecting the edge of the recessed blade of one arm and the edge of the recessed blade of the other arm, is configured to exhibit an elliptical shape when viewed from the third direction, with the first direction as the minor axis and the second direction as the major axis, immediately after the contact portions of each arm come into contact.

[0008] With this configuration, even if the wire D is tilted by being sandwiched between the overlapping recessed blades 20, contact between the recessed blades 20 and the core wire F inside the wire D can be avoided.

[0009] Furthermore, in the present invention, the cutting trajectory may be configured such that when viewed from a fourth direction, which is a direction inclined at an acute angle from the third direction with the first direction as the axis of rotation, the cutting trajectory exhibits a perfect circular shape. Furthermore, in the present invention, the fourth direction may be configured such that, when viewed from the first direction, the wire is tilted when it is clamped between the pair of recessed blades. Furthermore, in the present invention, the fourth direction may be configured such that, when viewed from the first direction, the fourth direction is inclined at an angle of 80° to 100° with respect to the bisector of the cutting angle of either one or both of the recessed blades. Furthermore, in the present invention, the fourth direction may be configured such that, when viewed from the first direction, it is inclined at an angle of 90° with respect to the bisector of the cutting angle of either one or both of the recessed blades. Furthermore, the present invention may be configured such that at least one of the two arms is provided with a shaft housing portion that houses the pivot shaft on the one arm so as to be movable in the circumferential direction centered on the contact point between the contact portions or in the left-right direction of the arm, and a biasing portion that directly or indirectly biases the pivot shaft to a predetermined position within the shaft housing portion. [Effects of the Invention]

[0010] According to the wire stripper of the present invention, the coating can be removed without damaging the core wire. [Brief explanation of the drawing]

[0011] [Figure 1] A schematic diagram of the wire stripper according to Example 1. [Figure 2] An illustrative diagram showing a wire in a tilted position. [Figure 3] Image diagram (1) showing the cutting trajectory. [Figure 4] Image diagram (2) showing the cutting trajectory. [Figure 5] An illustrative diagram showing an example of specifying the direction of wire inclination. [Figure 6] An illustrative diagram showing the cross-section of the wire after the coating has been cut. [Figure 7] A schematic diagram of the wire stripper according to Example 2. [Figure 8] An illustrative diagram (1) showing the operation of the pivot axis movement mechanism. [Figure 9] An illustrative diagram (2) showing the operation of the pivot axis movement mechanism. [Figure 10] An illustrative diagram (3) showing the operation of the pivot axis movement mechanism. [Figure 11] A schematic diagram illustrating the use of a conventional wire stripper. [Modes for carrying out the invention]

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Example

[0013] <1>Overall Structure (Fig. 1) Fig. 1 shows a first embodiment of a wire stripper according to the present invention. The wire stripper A according to the present invention has a structure in which two intersecting arms B (B1, B2) are connected via a rotation axis C so as to be openable and closable. In Fig. 1, for the two arms B (B1, B2), the arm B with the handle 10 located on the right side of the paper surface and the recessed blade 20 located on the left side of the paper surface is defined as one arm B1, and the remaining arm B is defined as the other arm B2. In the present invention, the shape of each arm B is not particularly limited, and known shapes (such as a linear shape, a curved shape, etc.) that can be adopted as the wire stripper A can be arbitrarily selected.

[0014] <1.1>Definition of Each Direction in the Wire Stripper In the present invention, in the wire stripper A shown in Fig. 1, the vertical direction of the paper surface is defined as the front-rear direction of the wire stripper A (hereinafter, also simply referred to as the "first direction"), the left-right direction of the paper surface is defined as the up-down direction of the wire stripper A (hereinafter, also simply referred to as the "second direction"), and the front-rear direction of the paper surface (the axial direction of the rotation axis C) is defined as the left-right direction of the wire stripper A (hereinafter, also simply referred to as the "third direction"), and a rectangular coordinate system is constituted in these three directions. The correspondence of each direction is shown in Table 1 below.

[0015] [Table 1] JPEG0007897541000002.jpg52150

[0016] <1.2>Definition of Each Direction in the Arm (Fig. 1) In the present invention, in the longitudinal direction of the arm B, the upper end on the paper surface in Fig. 1 is defined as the tip of the arm B, and the lower end on the paper surface is defined as the rear end of the arm B.

[0017] <1.3>Structure of the Arm (Fig. 1) Arm B is provided with at least a handle 10, recessed blades 20, and contact portion 30. In addition, Arm B may be provided with guide grooves 40 for guiding the wire to the respective recessed blades 20, and cutting blades 50 for cutting the wire. The details of each part are explained below.

[0018] <2> Handle (Figure 1) The handle 10 is the part that the user of the wire stripper A grips and performs an opening and closing motion to open and close the recessed blade 20. The handle 10 is also called the grip, handle, or hilt. The handle 10 is located on the rear end side of the arm, relative to the pivot axis C. In this invention, the shape of the handle 10 is not particularly limited. By gripping and closing both handles 10, the user brings the recessed blades 20 and cutting blades 50 on each arm B closer together, enabling them to strip the coating around the wire or cut the wire.

[0019] <3> Contact area (Figure 1) The contact portion 30 is a part that restricts the closing motion of the handle 10 to a predetermined position by bringing the contact portions 30 into contact with each other. In the present invention, the position in which the contact portion 30 is provided with respect to the arm B is not particularly limited. The contact portion 30 may be provided on the tip side of the arm B, or it may be provided on the inside of the handle 10, as is the case with ordinary scissors. Furthermore, in the present invention, the shape and structure of the contact portion 30 are not particularly limited. For example, a gripping portion provided at the tip of the arm B for grasping an object may also be used as the contact portion 30. In this embodiment, the gripping portions provided at the tips of each arm B1 and B2 for gripping an object are configured to also function as contact portions 30.

[0020] <4> Recessed blade (Figures 1-5) The recessed blade 20 is a part that makes a cut in the coating on the outer circumference of the wire. The recessed blade 20 is also called a strip blade or a hole blade. The recessed blade 20 is located on the tip side of the arm relative to the pivot axis C. In the present invention, the number of recessed blades 20 provided on arm B is not particularly limited, and multiple blades may be provided depending on the standard width of the wire material to be handled by wire stripper A.

[0021] <4.1> Positional relationship of each recessed blade (Figure 1) In the wire stripper A shown in Figure 1, the recessed blade 20 on one arm B1 is located on the near side of the page in Figure 1, and the recessed blade 20 on the other arm B2 is located on the far side of the page in Figure 1, so that when both handles 10 are closed, the recessed blades 20 overlap each other in an alternating manner.

[0022] <4.2> Shape of each recessed blade (Figures 2, 3, 4) In the present invention, the shape of each recessed blade 20 is configured such that, when both handles 10 are closed and the contact portions 30 come into contact with each other, the cutting trajectory 21 is defined as a virtual line connecting the edge of the recessed blade 20 of one arm B1 and the edge of the recessed blade 20 of the other arm B2, and when viewed from the third direction shown in Figure 2 (the left and right direction of the wire stripper A), the cutting trajectory 21 exhibits an elliptical shape with the first direction as the minor axis and the second direction as the major axis. According to this configuration, when the cutting trajectory 21 is viewed from the fourth direction shown in Figure 2, the cutting trajectory 21 takes on a circular shape. The "fourth direction" mentioned above refers to a direction tilted at an acute angle from the third direction (the left-right direction of wire stripper A), with the first direction (the front-to-back direction of wire stripper A) as the axis of rotation. Figure 3 shows the recessed blade 20 viewed from a third direction, where the cutting trajectory 21 exhibits an elliptical shape with the first direction as the minor axis (length: L1) and the second direction as the major axis (length: L2). Figure 4 shows the recessed blade 20 viewed from a fourth direction, where the cutting trajectory 21 exhibits a perfect circular shape (radius: L1).

[0023] <4.3> Elliptical and circular shapes (Figures 3 and 4) In this invention, the terms "elliptical shape" and "circular shape" used to specify the shape of the cutting trajectory 21 are not limited to mathematically precise shapes, but also include shapes that have errors (tolerances) that may occur during the manufacturing of the wire stripper A.

[0024] <4.4> Fourth direction / wire inclination direction (Figure 2) In the present invention, it is preferable that the aforementioned fourth direction is designed to be substantially the same as or identical to the direction in which the wire D tilts as a result of being sandwiched between the staggered recessed blades 20 by the closing operation of the handle 10 (hereinafter also referred to as the "wire tilting direction"). This "nearly the same direction" refers to a range of approximately 10° forward and backward from the first direction, more narrowly 5° forward and backward, and even narrower, approximately 1° forward and backward, with the first direction as the axis of rotation. The following describes an example of a method for determining the "wire inclination direction," but this invention does not limit the method for determining the wire inclination direction.

[0025] <4.5> Identification based on the blade angle 22 of the recessed blade (Figure 5) This method determines the wire inclination method from the cutting edge angle 22 (also called the cutting edge angle, blade angle, tip angle, etc.) of one or both of the recessed blades 20 provided on each arm B. As shown in Figure 5, the cutting edge angle 22 of the recessed blade 20 is formed by the angle between the first surface 23 and the second surface 24. The first surface 23 is also called the front surface or recessed surface, and the second surface 24 is also called the back surface or relief surface. In this invention, the cutting angles 22 of one recessed blade 20 and the other recessed blade 20 may be the same or different.

[0026] In this method, the direction of a line drawn approximately perpendicular to the line (bisector line 25) that bisects the cutting angle 22 of either one or both recessed blades 20 when viewed from the first direction (the front-to-back direction of the wire stripper A) is identified as the wire inclination direction. In this invention, "approximately orthogonal" means a range of 10° in either direction from 90°.

[0027] Therefore, the wire inclination direction specified by this method is, when viewed from the first direction (the front-to-back direction of the wire stripper A), 80° to 100°, preferably 85° to 95°, more preferably 89° to 91°, and most preferably 90°, from the bisector 25 of the cutting angle 22 of either one or both recessed blades.

[0028] In the wire stripper A shown in Figure 5, the planar direction of the first surface 23 and the planar direction of the second surface 24 both extend in the second direction (the vertical direction of the wire stripper A), and the planar direction of each second surface 24 extends in a direction that forms an acute angle with the second direction with the first direction as the axis of rotation, and the double-edged angles 22 are set at the same angle, so the first surfaces 23 and the second surfaces 24 are in a parallel relationship. The wire inclination direction is the direction of a line inclined perpendicularly from the bisector 25 of the cutting angle 22 of one recessed blade 20 (in this embodiment, since the recessed blades 20 are inverted vertically and horizontally, this can also be rephrased as "the cutting angle 22 of the other recessed blade 20" or "the cutting angles 22 of both recessed blades"). In Figure 5, the fourth direction is assumed to be the same direction as the wire inclination direction.

[0029] <5> Operational diagram (Figures 2 and 6) Next, the operation image of the wire stripper A according to this embodiment will be described. In this embodiment, it is assumed that the user holds the wire stripper A shown in Figure 1 with their right hand and performs the coating work on the wire D held with their left hand.

[0030] (1) Cutting operation of the covering (Figures 2 and 6) After the user sets the wire D in the appropriate recessed blade 20 according to the diameter of the wire D, they grip and close the handle 10. The wire D, held between the alternating recessed blades 20, tilts to an arbitrary angle as shown in Figure 2, and the recessed blades 20 form a cut E1 in the covering portion E on the outer circumference of the wire D. In this case, the cutting trajectory 21, which consists of imaginary lines connecting the edges of the pair of recessed blades 20, is approximately a perfect circle when viewed from the fourth direction, as shown in Figure 6. Therefore, the cutting trajectory 21, that is, the cutting edge of the recessed blade 20, does not reach the core wire F.

[0031] (2) Removal of the covering (Figure 6) With the handle 10 closed, if you move the wire stripper A held in your right hand outward along the direction of the inclination of the wire D (the direction of wire inclination (fourth direction)), the insulation E will be removed from the wire D (not shown). Even in this case, as shown in Figure 6, the aforementioned cutting trajectory 21 remains approximately circular when viewed from the fourth direction, so the cutting edge of the recessed blade 20 continues to remove only the coating E without contacting the core wire F.

[0032] <6> summary As described above, the wire stripper A according to this embodiment provides the following effects. (1) Even if the wire D tilts naturally when it is sandwiched between the overlapping recessed blades 20, contact between the recessed blades 20 and the core wire F inside the wire D can be avoided, so the insulated portion E can be pulled out without damaging the core wire F. As a result, it is possible to more reliably peel off only the coating E from the wire D while maintaining the same ease of use as before. (2) With respect to the wire D which has naturally tilted due to being sandwiched between the overlapping recessed blades 20, the recessed blades 20 do not come into contact with the core wire F, not only when attempting to pull out the insulated portion E in the direction of the tilt, but also when, for example, the tilt of the wire D is returned to the left-right direction (third direction) of the wire stripper A. Therefore, even when attempting to pull out the insulated portion E from the direction in which the tilt of the wire D was returned to normal, the insulated portion E can be pulled out without damaging the core wire F. [Examples]

[0033] <1> Overall structure (Figure 7) In the wire stripper A according to the present invention, a switching mechanism according to Patent Document 1 (Japanese Patent No. 7650531) described above may be provided, that is, a mechanism in which the recessed blades 20 provided on each arm B move closer together and then move further apart as the gripping motion of the handle 10 progresses. One example of the above-mentioned switching mechanism is a mechanism (rotation axis movement mechanism) that moves the pivot axis C using the contact points of the contact portions 30 provided on each arm B as pivot points.

[0034] An example of the wire stripper A according to this embodiment is shown in Figure 7. The wire stripper A shown in Figure 7 has a structure in which one arm B1 is provided with a shaft housing 60 and a biasing part 70, as an example of a pivot axis movement mechanism. The configuration of the handle 10, recessed blade 20, contact portion 30, guide groove 40, and cutting blade 50 shown in Figure 7 is generally the same as described in Embodiment 1, so a detailed explanation will be omitted. The details of the shaft housing portion 60 and the biasing portion 70 will be described below.

[0035] <2> Shaft housing (Figure 7) The shaft housing portion 60 is a part for housing the pivot shaft C so that it can move freely in the circumferential direction centered on the contact points of the contact portions 30. In the present invention, the shape of the shaft housing portion 60 is not particularly limited, and for example, an arc shape with the diameter of the pivot shaft C as the width length, or a shape with the diameter of the pivot shaft C as the width length and widened in a direction perpendicular to the left-right direction of the arm B can be adopted. In this embodiment, the shaft housing portion 60 is constructed as an elongated hole that extends in the circumferential direction centered on the contact points between the contact portions 30, with the outer diameter of the pivot shaft C as its width.

[0036] <3> biasing section (Figure 7) The biasing portion 70 is a part that biases the pivot shaft C housed in the shaft housing portion 60 to a predetermined position within the shaft housing portion 60. In the present invention, the biasing portion 70 may be in a form that directly biases by contacting the pivot shaft C, or it may be in a form that biases indirectly through another member without directly contacting the pivot shaft C. In the present invention, the biasing portion 70 can be made of an elastic material such as a spring or rubber. In this embodiment (Figure 7), the biasing portion 70 is made of a spring. This spring is housed in a groove formed to communicate with the shaft housing portion 60, and by compressing the spring and bringing one end of the spring into contact with the pivot shaft C, the restoring force of the spring directly biases the pivot shaft C to a predetermined position within the shaft housing portion 60. The biasing force provided by the biasing section 70 should be designed to be such that the rotation axis C does not move due to the resistance when closing the arms B1 and B2 and making a cut in the wire coating with the recessed blade 20.

[0037] <4> Operational image (Figures 8, 9, 10) Next, we will describe the operation of the wire stripper A according to this embodiment.

[0038] (1) Holding the handle and bringing the recessed blade close (Figure 8) Figure 8 shows the state immediately after the wire D is set in the recessed blade 20 appropriate for the diameter of the wire D, the handle 10 is gripped and the arms B1 and B2 are closed, and the contact parts 30 come into contact with each other. In this state, similar to Example 1, the cutting trajectory 21 when viewed from the fourth direction is configured to be perfectly circular, so that only the coating E is cut without damaging the core wire F inside the wire D. Furthermore, the pivot shaft C remains in its predetermined position due to the biasing force provided by the biasing unit 70.

[0039] (2) Further gripping the handle to separate the recessed blade (Figures 9 and 10) Figures 9 and 10 show the state in which the handle 10 is gripped even more tightly than in the state shown in Figure 8. When the handle 10 is gripped further from the state shown in Figure 8, a force acts on the pivot shaft C housed in the shaft housing 60, using the contact points of both contact portions 30 as pivot points, resisting the biasing force of the biasing portion 70 that biases the pivot shaft C to a predetermined position. As a result, the pivot axis C moves from its predetermined position within the shaft housing 60, and as shown in Figure 9, one arm B1 and the other arm B2 open slightly with an angle θ, with the contact point of the contact portion 30 as the pivot point. As a result, the two recessed blades 20, as viewed from the third direction shown in Figure 9, are slightly separated from the state shown in Figure 8, and the cutting trajectory 21 exhibits a shape that is slightly asymmetrical in the left-right direction of the paper. Furthermore, as seen from the fourth direction shown in Figure 10, the double recessed blades 20 are slightly separated from the state shown in Figure 8 by an angle θ' (where θ' < θ), and the cutting trajectory 21 exhibits a slightly asymmetrical shape in the left-right direction of the paper.

[0040] (3) Removal of the covering (not shown) When the handle 10 is gripped, each recessed blade 20 remains slightly away from the core wire F in both the view from the third direction (Figure 9) and the view from the fourth direction (Figure 10). Therefore, even if the direction in which the insulated portion E is pulled out is slightly tilted relative to the direction in which the wire D is tilted, only the insulated portion E can be removed without the recessed blade 20 coming into contact with the core wire F.

[0041] <5> summary As explained above, the wire stripper A according to this embodiment provides the following effects in addition to the effects described in Example 1. (1) When arms B1 and B2 are closed, the handle 10 is gripped further, causing the recessed blades 20 to form a notch in the covering portion E. After this, the recessed blades 20 separate from each other. Therefore, even if the wire, which is tilted by being sandwiched between the overlapping recessed blades, tilts even more than expected (for example, if the wire D tilts more than the wire tilt direction assumed in the design when the recessed blades 20 are sandwiched together, or if the tilt of the wire D increases due to intentional or unintentional operation by the user), the distance between the recessed blades 20 provides sufficient margin to avoid contact between the recessed blades 20 and the core wire F, thereby reducing the possibility of contact between the recessed blades 20 and the core wire F. [Explanation of Symbols]

[0042] A: Wire stripper B: Arm B1: One arm B2: The other arm C: Rotating axis D: Wire rod E: Covering part F: Core wire 10: Handle 20: Recessed blade 21: Cutting trajectory 22:Blade angle 23: First side 24: The second side 25: Bisector 30: Contact area 40: Guide groove 50: Cutting blade 60: Shaft housing 70: Encouraging part a: arm b: recessed blade c:Wire rod c1: Covering part c2: Core wire

Claims

1. A wire stripper in which two intersecting arms are connected via a pivot axis so that they can be opened and closed, Each arm has, A handle is provided on the rear end side of the arm, relative to the aforementioned pivot axis. A recessed blade is provided on the tip side of the arm, relative to the aforementioned pivot axis. At least one contact portion is provided, located on the tip side of the arm beyond the aforementioned recessed blade, and capable of coming into contact with each other by the closing motion of the handle. In a Cartesian coordinate system, when the front-to-back direction of the wire stripper is designated as the first direction, the up-and-down direction of the wire stripper as the second direction, and the left-to-right direction of the wire stripper as the third direction, Immediately after the contact points of each arm come into contact, the cutting trajectory, which consists of an imaginary line connecting the ridge of the recessed blade of one arm and the ridge of the recessed blade of the other arm, exhibits an elliptical shape when viewed from the third direction, with the first direction as the minor axis and the second direction as the major axis. Wire stripper.

2. The cutting trajectory is characterized in that, when viewed from a fourth direction which is inclined at an acute angle from the third direction with the first direction as the axis of rotation, the cutting trajectory exhibits a perfect circular shape. The wire stripper according to claim 1.

3. The fourth direction is characterized in that, when viewed from the first direction, the wire is tilted when it is clamped between the pair of recessed blades. The wire stripper according to claim 2.

4. The fourth direction is characterized in that, when viewed from the first direction, it is inclined at an angle of 80° to 100° with respect to the bisector of the cutting angle of either one or both of the recessed blades. The wire stripper according to claim 2.

5. The fourth direction is characterized in that, when viewed from the first direction, it is inclined at an angle of 90° with respect to the bisector of the cutting angle of either one or both of the recessed blades. The wire stripper according to claim 2.

6. At least one of the two arms, The pivot shaft is housed on one of the arms so as to be movable in the circumferential direction around the contact point between the contact portions or in the left-right direction of the arm, and the pivot shaft is housed in a shaft housing portion, The device is further characterized by having a biasing unit that directly or indirectly biases the pivot shaft to a predetermined position within the shaft housing, The wire stripper according to claims 1 to 5.

Images