Unit body connecting device and coating removal tool device

Abstract

To provide a unit body connecting device that can be attached to a cable sheath stripping tool to extend the length of cable sheath stripping.SOLUTION: A unit body connecting device includes three units 10 that can be connected in series, with a first unit 10A at one end, a second unit 10B at the other end, and a third unit 10C positioned therebetween. Furthermore, a specific position in the direction around the axis, which is the connecting direction of the first unit 10A, is defined as an indicator portion 25, and different marks 26 are attached to the outer surface of the second unit 10B at different positions in the direction around the axis. When the three units 10 are connected in series, the indicator portion 25 and one of the different marks 26 of the second unit 10B are located at the same position in the direction around the axis, and when the first unit 10A and the second unit 10B are directly connected, the indicator portion 25 and the other of the different marks 26 of the second unit 10B are located at the same position in the direction around the axis.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a unit connecting device and a sheath removal tool device, which are composed of units connected in series at the intermediate position of a tip member having a cutting blade for cutting into the sheath of a sheathed cable, and a sheath removal tool having a body connected to the tip member and rotating the cutting blade relative to the tip member to enable cutting. [Background technology]

[0002] When branching or connecting cables covered with an insulator, the covering at the end of the cable is removed to expose the conductor inside the cable. Patent Document 1 discloses a covering removal tool as a tool for removing the covering of a cable. This covering removal tool has a covering removal part of a tip member attached to the end of a grip part of a main body. The covering removal part has an internal cutting blade that cuts into the covering of the cable inserted through the insertion port. Inside the grip part, a removal length setting member that sets the length of the covering to be removed is arranged so as to be freely movable back and forth along the axial direction of the grip part, and the removal length setting member has a stopper surface that prevents the tip surface of the cable from moving further in the insertion direction beyond a predetermined position.

[0003] To remove a predetermined length of cable sheath with this tool, the cable is inserted into the sheath removal section through the insertion opening, and the cutting blade removes the sheath in a spiral pattern while the tool is rotated relative to the cable. When the tip end surface of the cable conductor abuts against the stopper surface of the removal length setting member, preventing insertion, sheath removal is complete, and the predetermined length of conductor is exposed at the end of the cable. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-196254 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the tool of Patent Document 1, the removal length setting member is provided inside the gripping part, so the range over which the removal length setting member can reciprocate in the axial direction is limited to the length of the gripping part or less, which means that there is a limit to the length of the coating that can be removed at the end of the cable.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a unit connecting device and a sheath stripping tool device that can be attached to a sheath stripping tool or the like to extend the length of cable sheath stripping. [Means for solving the problem]

[0007] The unit connection device of claim 1 comprises at least three units that can be connected in series, with a first unit at one end and a second unit at the other end, and a third unit located between them; The first unit and the second unit can be directly connected to each other, different markings are provided on an outer surface of the second unit at at least two different positions in a direction around an axis having the connecting direction as an axis; When a specific position of the first unit body in a direction around an axis having the connecting direction as an axis is defined as an indicator portion, When the at least three units are connected in series, the indicator portion and one of the different marks of the second unit are located at the same position in a direction around an axis that is the connection direction, When the first unit body and the second unit body are directly connected, the indicator portion and the other of the different marks are located at the same position around an axis that is the connection direction. This allows a different display section to be arranged on the second unit depending on whether or not another unit is interposed between the first unit and the second unit, and different information can be read immediately.

[0008] The unit body connecting device of claim 2 is particularly configured such that three units can be connected to other units adjacent to each other in the connecting direction by relative rotation with the connecting direction as the rotation axis, and the rotation angle at which the units can be connected by the relative rotation is the same as the angle shifted around the axis of the adjacent different displays. As a result, the three units can be connected by relative rotation, and the position of the display relative to the position of the indicator part can be changed depending on whether the third unit is interposed between the first and second units, making it possible to display different information.

[0009] The unit connecting device of claim 3 has at least three units, as in claim 1, Each of the at least three units is connectable to another unit adjacent to the unit in the connecting direction by relative rotation about a rotation axis in the connecting direction, and different marks are provided on the outer surface of each unit at at least three positions shifted in a direction around an axis about the connecting direction by a connectable rotation angle about the connecting direction; In the connected state of the at least three units, the first marking of the first unit, the second marking adjacent to the first marking of the third unit, and the third marking adjacent to the second marking of the second unit are aligned in the connection direction. This allows the user to immediately grasp the indications arranged in the connection direction, for example, the indication of the second unit or the indication of the third unit arranged next to the indication of the first unit, and therefore the user can immediately grasp the different information depending on whether or not the third unit is present.

[0010] In the unit body connecting device of claim 4, particularly, the three units have the same shape. This allows the individual units to be connected without distinction, improving workability.

[0011] The sheath removal tool device of claim 5 comprises a tip member having a cutting blade for cutting into the sheath of a sheathed cable, and a main body connected to the tip member and having an abutment portion that abuts against an end face of the sheathed cable that has passed through the cutting blade to determine the length of the sheath to be removed, and that rotates the cutting blade relative to the sheathed cable as a rotation axis to cut into the sheath; A unit body connecting device according to any one of claims 1 to 4, The at least three units are connected in series and are interposed between the tip member and the main body to connect them to each other, The first unit has a first connecting portion that can be connected to one of the tip member and the main body, and the second unit has a second connecting portion that can be connected to the other of the tip member and the main body. This allows the number of connected units to be changed and interposed between the tip member and the main body, thereby changing the distance between the cutting blade and the abutment portion. The difference in the separation length depending on whether or not the third unit is present can be immediately grasped by the different display of the second unit.

[0012] In the coating removal tool device of claim 6, the third unit particularly has the second connecting portion. This allows the unit body to be connected to the tip member or the main body even when the second unit body is removed.

[0013] A coating removal tool device according to claim 7 includes a coating removal tool similar to claim 5, a connecting member interposed between the tip member and the main body to connect them to each other, the connecting member is composed of two units that are aligned in the connecting direction of the tip member and the main body and connected to each other, The two units have a tip member connecting portion connectable to the tip member, a main body connecting portion connectable to the main body, and a unit connecting portion connectable to each other, and even if the order of the two units is changed, they are interposed between the tip member and the main body and connectable to them, and can be connected to each other, and different marks are attached to the outer surface at two positions shifted in the direction around the axis about the connecting direction, The unit body connecting portions are connectable by relative rotation about a rotation axis in the connecting direction, and a rotation angle at which the unit body can be connected by the relative rotation is equal to a deviation angle around the axis of the different indications, When the two connected units are interposed between the tip member and the main body and connected, an indicator portion of one of the tip member and the main body, one of the different indicators of the unit unit connected to one of the tip member and the main body of the two unit units, and an indicator other than the one of the different indicators of the unit unit connected to the other of the tip member and the main body of the two unit units are aligned in the connection direction. This allows different information to be displayed as each display on the two units alongside the indicators on the tip member or main body. Also, because the indicators are on the tip member or main body, even when only one unit is used, the display on that unit can be aligned with the indicator on the tip member or main body, allowing the display information to be displayed.

[0014] In the sheath removal tool device of claim 8, the two unit bodies are particularly configured such that the lengths separating the cutting blade and the abutting portion are the same. This allows the units to be connected without distinction, resulting in good workability. [Effects of the Invention]

[0015] In the present invention, the unit body connecting device can connect multiple units in series, for example, with the first unit body at one end and the second unit body at the other end, with the third unit body positioned in between, and can also be connected to other objects, so that by connecting this to an intermediate part of a coating removal tool, for example, the length of coating removal can be extended.

[0016] In addition, the outer surface of each unit is provided with a plurality of indicia that can be aligned with the indicator portion at a specific position in the axial direction about the connecting direction. The units can be connected by relative rotation about the connecting direction as the rotation axis, and the rotation angle at which they can be connected by relative rotation is set to be the same as the angle shifted about the axis between two adjacent indicia. This allows the positions of the indicia relative to the indicator portion to be changed depending on the number of units used, and different information can be immediately read from the indicia aligned with the indicator portion in the axial direction about the connecting direction. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a perspective view of a coating removal tool device according to an embodiment of the present invention, viewed from a different direction. [Figure 2] 2A and 2B show the coating removal tool device of FIG. 1, in which FIG. 2A is a plan view and FIG. 2B is a cross-sectional view taken along the line AA in FIG. [Figure 3] 2A and 2B show the coating removal tool of FIG. 1, in which FIG. 2A is a plan view and FIG. 2B is an exploded perspective view. [Figure 4] 4 shows the main body of FIG. 3, in which (a) is a perspective view, (b) is a perspective view of the removal length fine-adjustment member of (a), and (c) is a front view thereof. [Figure 5] FIG. 2 is a perspective view of the unit connecting device of FIG. 1; [Figure 6] 6 is a perspective view of the unit body of FIG. 5 as seen from a different direction. [Figure 7] FIG. 7 is a plan view of a seal attached to the outer surface of the unit body of FIG. 6. [Figure 8] FIG. 4 is a perspective view showing a state in which one to three units are connected to the tip member of FIG. [Figure 9]2 is a plan view showing a developed state of a seal attached to the unit connecting device of FIG. 1. FIG. [Figure 10] 2 is a perspective view of a sheath removal tool device in which an index portion is attached to the tip member of FIG. 1. FIG. [Figure 11] 11 is a perspective view showing two units of the sheathing removal tool device of FIG. 10 connected together. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a unit connecting device and a sheath removing tool device according to embodiments of the present invention will be described with reference to the accompanying drawings. Figures 1 and 2 show a sheath removal tool device 1 that has an insertion port 51 into which the end of a sheathed cable is inserted, and is composed of a sheath removal tool 2 that removes the sheath and exposes the internal conductor by rotating it relative to the sheathed cable (hereinafter simply referred to as "cable") inserted through the insertion port 51, and a connecting member 3 that is interposed in the longitudinal middle of the sheath removal tool 2 and connects them to each other.

[0019] In Figure 3, the sheath removal tool 2 includes a tip member 50 having a cutting blade 54 that cuts into the cable sheath, and a main body 30 that is connected to the tip member 50 and grips the gripping portion 31 to rotate the cutting blade 54 of the tip member 50 relative to the cable as a rotation axis, thereby enabling cutting into the sheath. The connecting member 3 shown in FIG. 1 and the like is made up of a unit body connecting device 4, and in this embodiment, the unit body connecting device 4 is made up of three units 10 connected in series.

[0020] 2 and 3, the tip member 50 of the sheath removal tool 2 is a sheath removal section that cuts and removes the sheath of the cable, and has a circular insertion opening 51 formed in the center of its outer end, through which the cable is inserted, and an insertion passage 52 with a circular cross section formed from the insertion opening 51 to the interior. The insertion passage 52 penetrates to the end on the side of the gripping part 31 along an insertion axis O, which is a central axis extending from the center of the insertion opening 51 toward the gripping part 31 and is the direction in which the cable is inserted. A cutting blade body 53 equipped with a cutting blade 54 that cuts into the sheath is provided inside the tip member 50. Except for the cutting blade 54, the tip member 50 is formed as a single unit from a synthetic resin material.

[0021] The main body 30 of the sheath removal tool 2 includes a gripping portion 31 that is held by hand, and a power tool connecting portion 32 to which an electric rotary tool (not shown) is connected. The power tool connecting portion 32 has a protruding rotary shaft 34 at the center of its end that is inserted into the chuck of the electric rotary tool, and is detachably attached to the gripping portion 31.

[0022] The gripping portion 31 is made of synthetic resin and is formed in a generally cylindrical shape, with a slot 35 formed in the axial direction on its outer surface, and the outer surface is curved with a central recess inward to make it easier to grip by hand, as shown in Figure 4 etc. At the center of the interior of the gripping portion 31 is a cylindrical removal length fine-adjustment member 33 of a predetermined length that finely adjusts the length of coating removal and is arranged so that it can move back and forth along the axial direction of the gripping portion 31. At the center of the top of the removal length fine-adjustment member 33 is provided an operation portion 36 for operating its movement, and a knob portion 37 at its upper end protrudes upward from the slot 35.

[0023] A rectangular plate portion 38 is disposed below the knob 37, and its upper surface is provided with four engaging protrusions 40 that can be freely engaged with and disengaged from a plurality of rectangular engaging holes 39 that are formed below both sides of the elongated hole 35 of the gripping portion 31 and arranged in a comb-like pattern. A leaf spring 41 is attached below the rectangular plate portion 38 and inside the removal length fine-adjusting member 33. When the knob 37 is pressed down against the elastic force of the leaf spring 41, the engaging protrusions 40 move downward into the engaging holes 39, disengaging from the engaging protrusions 40 and allowing the removal length fine-adjusting member 33 to reciprocate longitudinally within the elongated hole 35. When the knob 37 is released after moving a predetermined distance, the leaf spring 41 causes the engaging protrusions 40 to rise and re-engage with the engaging holes 39, stopping and fixing the removal length fine-adjusting member 33 in that position.

[0024] The axis of the removal length fine-adjustment member 33 is positioned on the same straight line as the insertion axis O of the cable, and one end face of the removal length fine-adjustment member 33 forms an abutment surface 42 that abuts against the tip surface of the cable that has passed through the cutting blade 54, preventing the tip surface of the cable from moving beyond a predetermined position toward the rear in the insertion direction, and this abutment surface 42 constitutes the abutment portion in the claim that determines the removal length of the coating.

[0025] Next, the unit connecting device 4, which is a connecting member 3 that is interposed in the longitudinal middle of the coating removal tool 2 and connects them to each other, is composed of three units 10 that can be connected in series, with the first unit 10A at one end and the second unit 10B at the other end, with the third unit 10C positioned between them, as shown in Figure 5.

[0026] The first unit 10A has a first connecting portion 11 connectable to one of the main body 30 and the tip member 50, in this embodiment, the tip member 50, and the second unit 10B has a second connecting portion 12 connectable to the other of the tip member 50 and the main body 30, in this embodiment, the main body 30. In this embodiment, the first connecting portion 11 is also a tip member connecting portion 13 connectable to the tip member 50, and the second connecting portion 12 is also a main body connecting portion 14 connectable to the main body 30. As a result, the first unit 10A located at one end is connected to the tip member 50, and the second unit 10B located at the opposite end is connected to the main body 30, and these components are connected to each other to assemble the sheath removal tool device 1.

[0027] The first to third units 10 are formed to the same shape and size, and each unit 10 is formed from a synthetic resin material in the shape of a short columnar concentric double cylinder, as shown in Fig. 6. The length of each unit 10 in the connecting direction is set to 20 mm in this embodiment. Fig. 6 is a perspective view of the unit 10 seen from different angles, with Figs. 6(a) and 6(b) showing the unit 10 as seen from one open end 16a connected to the tip member 50, and Figs. 6(c) and 6(d) showing the unit 10 as seen from the other open end 16b connected to the main body 30.

[0028] As shown in Figures 6(a) and (b), each unit body 10 has an elastic protrusion 18 formed at the tip of an elastic piece 17 arranged on the inside at a part of the circumference of the open end 16a on one side of the outer tube portion 16, which protrudes to the outside and elastically moves in and out radially, and an engaging protrusion 19 of a certain width is erected at the center of the end face 18a of the elastic protrusion 18, protruding toward the strip-shaped recess space 20 of the adjacent unit body 10.

[0029] As shown in FIG. 6(d), a recessed space 20 is formed in a circumferential portion of the open end 16b on the other side of the outer tube portion 16, opposite the elastic protrusion 18, at a position opposite the elastic protrusion 18. The recessed space 20 is recessed outwardly with a step of a constant depth and a band-like recess with a constant width and an arcuate surface. The recessed space 20 is further divided into two spaces by a partition rib 20c formed along the axial direction at approximately the center of the circumferential direction. One space is an insertion recess 20a into which the engaging protrusion 19 of the adjacent mating unit 10 is inserted from the connecting direction, and the other space is an engagement recess 20b into which the engaging protrusion 19 inserted into the insertion recess 20a moves circumferentially to engage. The insertion recess 20a has an opening width slightly larger than that of the engagement recess 20b, and the engagement recess 20b has an opening width slightly larger than that of the engagement protrusion 19. The side of the partition rib 20c facing the insertion recess 20a is formed as an inclined surface 20d.

[0030] When two units 10 are connected to each other, the engaging protrusion 19 of the connecting unit 10 is inserted into the insertion recess 20a. The two units 10 are then rotated relative to each other, causing the elastic protrusion 18 to resiliently retreat toward the interior of the outer tubular portion 16, overcome the partition rib 20c, and move into the engaging recess 20b. When the engaging protrusion 19 is fitted into the engaging recess 20b, the relative rotation between the two units 10 stops, and the engagement between the engaging protrusion 19 and the engaging recess 20b is completed. To release this engagement, the elastic protrusion 18 is pressed against the inside of the outer tubular portion 16 and rotated in the opposite direction, moving the engaging protrusion 19 from the engaging recess 20b toward the insertion recess 20a. The two units 10 are then ready to be released from the connection. As shown in FIG. 6(d), the engaging protrusion 19 and the engaging recess 20b of the recess space 20 are spaced apart by a distance L1 at their respective widthwise intermediate positions around the axis.

[0031] 6(b), the unit 10 further has anti-detachment projection insertion portions 21a formed by cutting out portions of the arc-shaped flange 21 at two circumferentially opposing locations on the inner surface of the open end 16a on one side of the outer tubular portion 16. Anti-detachment portions 21b are formed on the inner surface at the rear side of the arc-shaped flange 21 to engage with anti-detachment projections 24 (described later), and the two unit 10 are connected to each other by relatively moving the unit 10 in the coupling direction while inserting the pair of anti-detachment projections 24, 24 of one unit 10 into the pair of anti-detachment projection insertion portions 21a, 21a of the other unit 10, and then rotating them circumferentially relative to each other to engage with the anti-detachment portions 21b on the inner surface at the rear side of the arc-shaped flange 21.

[0032] A guide plate 22 is erected along the periphery of approximately half the peripheral edge of the opening end 16a on one side of the outer tube portion 16. When connecting unit bodies 10 together, the guide plate 22 abuts against the inner surface of the outer tube portion 16 of the unit body 10 to be connected, aligning the rotation axes of both unit bodies 10 and guiding their relative rotation.

[0033] 6(c) and 6(d), the inner cylindrical portion 23 of the double cylindrical unit 10 is positioned slightly offset toward the open end 16b on the other side of the outer cylindrical portion 16 in the connection direction relative to the outer cylindrical portion 16, with one end projecting slightly outward. The other end of the inner cylindrical portion 23 is also set back slightly inward from the open end 16a on one side of the outer cylindrical portion 16. A pair of retaining projections 24 projecting slightly outward are formed at two opposing circumferential positions on one end of the inner cylindrical portion 23.

[0034] In this way, each unit 10 can be connected to the unit 10 adjacent in the connecting direction by relative rotation about the axis of rotation in the connecting direction. 6 constitutes a unit body connecting portion 15 connectable to another unit body 10, and also constitutes a tip member connecting portion 13 connectable to a tip member 50. Also, the other opening end portion 16b shown in FIG. 6 constitutes a unit body connecting portion 15 connectable to another unit body 10, and also constitutes a main body connecting portion 14 connectable to the main body 30.

[0035] The connecting mechanisms of the connecting parts of these units 10 are similarly formed at the connecting points of the ends of the tip member 50, the connecting points of the ends of the main body 30, and the connecting points between the grip part 31 of the main body 30 and the power tool connecting part 32. That is, the end of the tip member 50 on the unit 10 side has the same parts as the recessed space 20 and the pair of retaining protrusions 24, 24 of the opening end 16b on the other side of the unit 10, and the end of the main body 30 on the unit 10 side has the same parts as the elastic protrusion 18, retaining part 21b, and guide plate 22 of the opening end 16a on one side of the unit 10, and thus form the same connecting mechanism as the unit 10.

[0036] An index portion 25 and a marking 26 are attached to the outer surface of each unit 10. The index portion 25 serves as a virtual reference and is located at a specific position around the axis of the connection direction. The marking 26 is represented by a semicircular arc, a wedge, or a triangle. As shown in FIGS. 5 and 7 , the marking 26 is attached at at least two different positions around the axis of the connection direction (five positions in this embodiment). Specifically, a first marking 26A consisting of the numeral "+20" and a line in the connection direction is attached at the position where the index portion 25 is attached. A second marking 26B consisting of the numeral "+40" and a line is attached at a distance L2 around the axis from the marking 26A. Similarly, a third marking 26C, a fourth marking 26D, and a fifth marking 26E consisting of the numerals "+60," "+80," and "+100" and a line are attached at intervals equal to the distance L2 around the axis.

[0037] These different indicators 26 provide different information depending on the number of units 10 installed. Specifically, the numbers such as "+20" in the indicators 26 indicate the length of the distance between the tip member 50 and the main body 30 extended by interposing the unit connecting device 4, which is the connecting member 3, between the tip member 50 and the main body 30. When multiple units 10 are connected, the numbers in the indicators 26 indicate the total length of the units 10 in the connecting direction. In this embodiment, the length of each unit 10 in the connecting direction is 20 mm. Therefore, for example, the indicator 26H of "+60" indicates that three units 10 are connected in series as shown in FIG. 1, and the total length of the three units 10 in the connecting direction is 60 mm.

[0038] Here, the distance L1 between the engaging protrusion 19 and the engaging recess 20b of the recess space 20 at each widthwise intermediate position, as shown in Fig. 6(d), is the same as the distance L2 in the direction around the axis that corresponds to the connecting direction between the indicia 26, as shown in Fig. 7. In addition, the rotation angle at which the units 10 can be connected by relative rotation is the same as the angle of deviation in the direction around the axis that corresponds to the connecting direction between the indicia 26.

[0039] These symbols 26 are printed on a single, elongated, rectangular sticker 27, as shown in Figure 7, and can be attached to the outer surface of the unit 10 by pasting it on. The sticker 27 also has the words "Please read the number on the bottom row."

[0040] Therefore, according to this description, when three units 10 are connected, for example, as shown in Figure 1, by reading the number "+60" on the indicator 26H of the second unit 10B at the bottom, which is aligned at the same position around the axis of the connection direction as the indicator portion 25 attached to the first unit 10A, it is possible to visually determine that the length of the cable sheath removed by the sheath removal tool 2 is extended by 60 mm, which is the total length of the units 10 interposed between the tip member 50 and the main body 30.

[0041] Next, a method for extending the cable sheath stripping length of the sheath stripping tool 2 using the unit connecting device 4 configured as above will be described. To extend the cable sheath removal length beyond that of the cable sheath removal tool 2 itself, which is formed by directly assembling the main body 30 and the tip member 50, a unit connecting device 4 is interposed between the main body 30 and the tip member 50. In this case, the number of units 10 connected to the unit connecting device 4 is increased one by one. Here, as an example, a case will be described in which the cable sheath removal length is extended by 60 mm.

[0042] 8(a), the first unit 10 as the first unit 10A is connected to the tip member 50 at the first connecting portion 11, which is the tip member connecting portion 13, of the unit 10. To do this, although not shown, the unit 10 is moved toward the tip member 50, and in the same manner as when connecting the units 10 to each other, a pair of retaining protrusions similar to the retaining protrusions 24 of the unit 10 in the tip member 50 are inserted into a pair of retaining protrusion insertion portions 21a, 21a on the inner surface on the back side of the opening end 16a on one side of the unit 10, and the engaging protrusion 19 on the opening end 16a on one side of the unit 10 is inserted into the insertion recess of the recess space in the tip member 50 similar to the recess space 20 of the unit 10. 8, the pair of retaining projections of the tip member 50 are moved circumferentially to fit into the pair of retaining portions 21b, 21b of the unit body 10, and the engaging projection 19 of the unit body 10 is moved from the insertion recess into the engaging recess of the tip member 40 to be accommodated.

[0043] Next, a second unit 10 serving as a third unit 10C is connected to the previously connected first unit 10A. To do this, the second unit 10 is moved toward the first unit 10, and the pair of retaining protrusions 24 of the first unit 10 is inserted into the pair of retaining protrusion insertion portions 21a on the inner surface at the rear side of the second unit 10, and the engaging protrusion 19 of the second unit 10 is inserted into the insertion recess 20a of the recess space 20 of the first unit 10. After insertion, the second unit 10 is rotated clockwise, and the pair of retaining protrusions 24 of the first unit 10 is fitted into the pair of retaining portions 21b of the second unit 10, and the engaging protrusion 19 of the second unit 10 is moved from the insertion recess 20a of the first unit 10 into the engaging recess 20b and accommodated. As a result, the second unit body 10 is connected to the first unit body 10 as shown in FIG. 8(b).

[0044] Here, first, follow the instructions "Read the bottom number" on the outer surface of the first unit body 10 and read the number "+40" on the indicator 26B, which is located at the same position as the indicator part 25 of the first unit body 10A in the axial direction around the connecting direction of the second unit body 10. The number represents an extended coating removal length of 40 mm, which does not match the set length of 60 mm.

[0045] Therefore, the third unit 10 is connected to the second unit 10 in the same manner as each unit 10 described above. The state in which the third unit 10 is connected is shown in Figure 8(c). After connection, the number "+60" is read from the indicator 26C of the third unit 10, which is located in the same position around the axis as the indicator portion 25 of the first unit 10A. Since the extension length at this time matches the set value, the third unit 10 is treated as the second unit 10B to be connected to the main body 30, and no further units 10 are added.

[0046] Thereafter, the main body 30 is connected to the main body connecting portion 14 of the third unit 10, which is the second unit 10B. At this time, the same connecting mechanism as that of the unit 10 is also provided at the open end of the main body 30 on the second unit 10B side, so that the main body 30 can be connected in the same way as each unit 10.

[0047] Furthermore, once each unit body 10 has been connected, it can be released from the connection by rotating it relatively in the opposite direction to when it was connected, thereby releasing the engagement between the engaging protrusion 19 and the engaging recess 20b, and by moving the anti-pullout protrusion 24 from the anti-pullout portion 21b toward the anti-pullout protrusion insertion portion 21a to release the retention.

[0048] In this way, when the first to third units 10 are interposed between the tip member 50 and the main body 30 and connected in series, the indicator portion 25 of the first unit 10A, the second marking 26B of the third unit 10C, and the third marking 26C of the second unit 10B are aligned on the same straight line in the connection direction.

[0049] Here, the third mark 26C of the second unit 10B corresponds to one of the different marks in the claims, and is located at the same position as the indicator part of the first unit in the axial direction about the connecting direction. Furthermore, in the state where the third unit 10C is removed and the first unit 10A and the second unit 10B are directly connected, the second mark 26B of the second unit 10B corresponds to the other of the different marks in the claims when the first unit and the second unit are directly connected, and is located at the same position as the indicator part of the first unit in the axial direction about the connecting direction.

[0050] The positional relationship of the indicia 26 of each unit body 10 after connection is shown in an expanded view of the sticker 27 as shown in Figure 9, where each unit body 10 is connected while being sequentially shifted in the circumferential direction by a distance L2 between adjacent indicia 26, and is connected by being sequentially rotated by an angle shifted around the axis of two adjacent indicia 26.

[0051] In addition, four or more units 10 can be interposed between the tip member 50 and the main body 30 of the sheath removal tool 2, in which case the multiple units 10 between the first unit 10A and the second unit 10B become the third unit 10C.

[0052] Next, the operation of the unit connecting device 4 and the sheath removal tool device 1 of this embodiment will be described. The unit connecting device 4 comprises at least three units 10 that can be connected in series, with a first unit 10A at one end, a second unit 10B at the other end, and a third unit 10C positioned between them. By connecting these units to the intermediate part of the sheath removal tool 2, the length of the cable that can be stripped of sheath can be extended.

[0053] In addition, by changing the number of connected units 10 depending on whether or not a third unit 10C is interposed between the first connecting portion 11 and the second connecting portion 12, and interposing it between the tip member 50 and the main body 30, the distance between the cutting blade 54 of the sheath removal tool 2 and the abutment surface 42 can be changed to a different distance length.

[0054] Five different indicia 26 are provided on the outer surface of the second unit 10B at at least two different positions (five positions in this embodiment) around the axis of the connection direction. Additionally, the three units 10 can be connected by relative rotation, and the rotation angle at which they can be connected by relative rotation is the same as the angle of deviation around the axis of two adjacent indicia 26 on the second unit 10B. Therefore, the number of intervening units 10 and the amount of deviation around the axis of the indicia 26 due to relative rotation during connection are related, and the positions of the indicia 26 relative to the position of the indicator portion 25 change depending on whether the third unit 10C is interposed between the first unit 10A and the second unit 10B, etc. In other words, the number of units 10 and the amount of deviation of the indicia 26 from the indicator portion 25 are related to each other, and this relationship is visualized graphically to display different information.

[0055] As a result, when the unit connecting device 4 is interposed between the main body 30 and the tip member 50 and connected in series, the numbers on the display 26 of the second unit 10B, which is located at the same position as the indicator portion 25 of the first unit 10A in the axial direction about the connecting direction, can be visually confirmed and different information can be immediately read. As a result, the extendable coating removal length can be immediately and easily determined without the need to count the number of connected intervening units 10 or calculate the total length by multiplying the length of each unit 10 in the connecting direction by the number of connected units.

[0056] In addition, because the three units 10 are formed in the same shape, even if the alignment positions of the units 10 in the connecting direction are interchanged, the distance between the cutting blade 54 of the tip member 50 and the abutment surface 42 of the gripping portion 31 of the main body 30 remains the same. This allows the units 10 to be connected without distinction, improving workability. Furthermore, because it is necessary to prepare only one type of unit 10, parts costs can be reduced.

[0057] Furthermore, since the three units 10 have the same shape, the third unit 10C also has a second connecting portion 12. Therefore, it can be connected to the tip member 50 or the main body 30 even when the second unit 10B is removed.

[0058] In the above embodiment, the indicator portion 25 is defined at a specific position in the first unit 10A in the direction around the axis that is the connection direction. However, the indicator portion 25 may also be set on the tip member 50 or the main body 30. For example, as shown in Fig. 10, the indicator 25 can be defined as a specific position on a straight line portion of the boundary step between the outer surface of the tip member 50 and the storage space for the cutting blade 54. In this case, when three units 10 are connected between the main body 30 and the tip member 50 as shown in Fig. 10, the tip member 50 can be broadly regarded as the first unit 10A, and the first unit 10A and the third unit 10C of the above-described embodiment can be broadly regarded as the third unit 10C. In this case, the shape of the first unit 10A in the broad sense will be different between the case of Fig. 1 and the case of Fig. 10.

[0059] In addition, in a configuration in which the indicator portion 25 is defined on the tip member 50 or the main body 30, if there is one unit body 10 interposed between the tip member 50 and the main body 30, the indicator portion 25 and the marking 26 of one unit body 10 are aligned at the same position around the axis whose axis is the connection direction.

[0060] Also, as shown in Figure 11, when there are two units 10, a second unit 10B and a third unit 10C, interposed between the tip member 50 and the main body 30, the indicator portion 25 attached to the tip member 50, which is the first unit 10A, the display 26I of the third unit 10C adjacent to the first unit 10A, and the display 26R of the second unit 10B away from the first unit 10A are aligned at the same position around the axis, and the display 26R of the second unit 10B displays the information "+40", which is different from the display 26I of the third unit 10C.

[0061] In the above embodiment, the first connecting portion 11 of the first unit 10A is a connecting portion that can be connected to the tip member 50, and the second connecting portion 12 of the second unit 10B is a connecting portion that can be connected to the main body 30. However, conversely, the first connecting portion 11 of the first unit 10A may be a connecting portion that can be connected to the main body 30, and the second connecting portion 12 of the second unit 10B may be a connecting portion that can be connected to the tip member 50, so that the first unit 10A is connected to the main body 30 and the second unit 10B is connected to the tip member 50.

[0062] Furthermore, although the individual units 10 in the above embodiment are formed in the same shape, this is not necessarily limited to this, and it is not precluded from forming them in different shapes. In addition, the connection points between the main body 30 of the sheath removal tool 2 and the unit body 10, the connection points between the tip member 50 and the unit body 10, and the connection points between the gripping portion 31 of the main body 30 and the electric tool connection portion 32 are formed with a connection mechanism similar to the connection points between the unit bodies 10, but may also be formed with a different connection mechanism.

[0063] Furthermore, the marking 26 attached to the unit body 10 in the above embodiment represents the total length of the unit body 10 in the connecting direction, but may also represent other information, such as the number of unit bodies 10 to be connected.

[0064] The markings 26 of the unit body 10 are attached by sticking a sticker 27 on the outer surface of the unit body 10, but they may be attached by other means, such as by engraving on the outer surface of the unit body 10.

[0065] In addition, although the unit connecting device 4 in the above embodiment is used to extend the cable sheath removal length of the sheath removal tool 2, it can also be used for other purposes and inserted into other devices, tools, etc. [Explanation of symbols]

[0066] 1: Sheath removal tool device, 2: Sheath removal tool, 3: Connecting member, 4: Unit body connecting device, 10: Unit body, 10A: First unit body, 10B: Second unit body, 10C: Third unit body, 11: First connecting portion, 12: Second connecting portion, 13: Tip member connecting portion, 14: Main body connecting portion, 15: Unit body connecting portion, 25: Index portion, 26: Display, 30: Main body, 42: Contact surface, 50: Tip member, 54: Cutting blade.

Claims

1. The device includes at least three units that can be connected in series, with a first unit at one end and a second unit at the other end, and a third unit between them; The first unit and the second unit may be directly connected to each other, different markings are provided on an outer surface of the second unit at at least two different positions in a direction around an axis having the connecting direction as an axis; When a specific position of the first unit body in a direction around an axis having the connecting direction as an axis is defined as an indicator portion, When the at least three units are connected in series, the indicator portion and one of the different marks of the second unit are located at the same position in a direction around an axis that is the connection direction, A unit connecting device characterized in that, when the first unit and the second unit are directly connected, the indicator portion and the other of the different displays are located at the same position in the axial direction with the connection direction as the axis.

2. The unit connecting device according to claim 1, characterized in that the three units can be connected to other units adjacent to each other in the connecting direction by relative rotation with the connecting direction as the rotation axis, and the rotation angle at which they can be connected by relative rotation is the same as the angle at which the adjacent different displays are shifted around the axis.

3. The device includes at least three units that can be connected in series, with a first unit at one end and a second unit at the other end, and a third unit between them; Each of the at least three units is connectable to another unit adjacent to the unit in the connecting direction by relative rotation about a rotation axis in the connecting direction, and different marks are provided on the outer surface of each unit at at least three positions shifted in a direction around an axis about the connecting direction by a connectable rotation angle about the connecting direction; A unit connection device characterized in that, in a connected state of the at least three units, the first marking of the first unit, the second marking adjacent to the first marking of the third unit, and the third marking adjacent to the second marking of the second unit are aligned in the connection direction.

4. 4. The unit connecting device according to claim 1, wherein the at least three units have the same shape.

5. a tip member having a cutting blade for cutting into the sheath of a sheathed cable; and a main body connected to the tip member and having an abutment portion that abuts against an end face of the sheathed cable that has passed through the cutting blade to determine the length of the sheath to be removed, and that rotates the cutting blade relative to the sheathed cable as a rotation axis to cut into the sheath; A unit connecting device according to any one of claims 1 to 4, A coating removal tool device comprising: The at least three units are connected in series and are interposed between the tip member and the main body to connect them to each other, The first unit has a first connecting portion that can be connected to one of the tip member and the main body, and the second unit has a second connecting portion that can be connected to the other of the tip member and the main body.

6. The sheath removal tool device according to claim 5 , wherein the third unit has the second connecting portion.

7. a tip member having a cutting blade for cutting into the sheath of a sheathed cable; and a main body connected to the tip member and having an abutment portion that abuts against an end face of the sheathed cable that has passed through the cutting blade to determine the length of the sheath to be removed, and that rotates the cutting blade relative to the sheathed cable as a rotation axis to cut into the sheath; a connecting member interposed between the tip member and the main body to connect them to each other; A coating removal tool device comprising: the connecting member is composed of two units that are aligned in a connecting direction between the tip member and the main body and connected to each other, The two units have a tip member connecting portion connectable to the tip member, a main body connecting portion connectable to the main body, and a unit connecting portion connectable to each other, and even if the order of the two units is changed, they are interposed between the tip member and the main body and connectable to them, and can be connectable to each other, and different marks are attached to the outer surface at two positions shifted in the direction around the axis about the connecting direction, The unit body connecting portions are connectable by relative rotation about a rotation axis in the connecting direction, and a rotation angle at which the unit body can be connected by the relative rotation is equal to a deviation angle around the axis of the different indications, A sheath removal tool device characterized in that, when the two connected units are interposed between the tip member and the main body and connected, an indicator portion of one of the tip member and the main body, one of the different indicators of the unit connected to one of the tip member and the main body of the two unit units, and an indicator other than the one indicator of the different indicators of the unit connected to the other of the tip member and the main body of the two unit units are aligned in the connection direction.

8. 8. The sheath removal tool device according to claim 7, wherein the two unit bodies have the same length for separating the cutting blade and the abutting portion.

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