JP7056923B2 - Wire peeling tool - Google Patents

Description

The present invention relates to an electric wire peeling tool used for peeling off an insulating coating having a certain length in an intermediate portion of an electric wire.

When constructing distribution equipment, bypass construction and grounding construction may be performed to cause a partial power outage. At that time, in order to form a bypass or grounding path, the insulation coating in the middle part of the electric wire is stripped off, the core wire that is the conductor is exposed, and the work of connecting the bypass device or grounding device to it remains live. It is required to carry out at.

In order to meet such demands, an electric wire peeling tool has been developed that allows an operator to spirally cut and peel off an insulating coating at an intermediate portion of an electric wire without directly touching the electric wire or the like (for example, a patent). Documents 1 to 3). Then, after the predetermined work is completed, restoration can be achieved by attaching a plastic insulating cover to the exposed portion of the core wire.

The electric wire peeling tools disclosed in Patent Documents 1 to 3 both have a cutting blade for spirally stripping the insulating coating in the middle portion of the electric wire by rotating and moving the cutting blade in the longitudinal direction of the electric wire to strip the insulating coating. It has become.

Further, when attaching / detaching the electric wire peeling tool to / from the electric wire to be constructed, the electric wire peeling tool is opened.

Jitsufuku No. 6-2414 Gazette Japanese Unexamined Patent Publication No. 11-98639 Japanese Unexamined Patent Publication No. 2013-192430

However, since the conventional electric wire peeling tool spirally peels the insulating coating as described above, it is diagonal to the longitudinal direction of the electric wire from the "cutting start point of the cutting blade" where the insulating coating is started to be peeled. Go to. For this reason, the insulation coating cannot be stripped off over the entire circumference when viewed on a plane including this "cutting start point of the cutting blade" as well as orthogonal to the central axis of the electric wire, resulting in unpeeled insulation coating. When the insulating cover etc. is attached to the exposed part of the core wire at the time of restoration after the completion of construction, there is a problem that the unpeeled residue of the insulating coating may become an obstacle and the insulating cover etc. may not be securely fixed. rice field.

The present invention has been made in view of such a problem, and an object thereof is to strip off the insulating coating over the entire circumference when viewed in a plane orthogonal to the central axis of the electric wire including the cutting start point of the cutting blade. It is an object of the present invention to provide an electric wire peeling tool which can prevent the insulation coating from being left unpeeled.

According to one aspect of the invention
A cutting blade that strips off the insulation coating of the wire to expose the core wire by rotating around the central axis of the wire.
An electric wire fixing mechanism for fixing the electric wire and
It is equipped with a movement control mechanism that controls the cutting blade to move toward the electric wire fixing mechanism.
The movement control mechanism is
A rotating member that rotates with the cutting blade,
A rotating convex portion projecting from the rotating member,
A cam plate that has an engaging portion that engages with the rotating convex portion and is rotated by the rotating convex portion.
One end is attached to the wire fixing mechanism, and the other end has a movement control rod that abuts on the cam plate.
The cam plate is formed with a movement control rod through hole 428 that comes to the position of the other end of the movement control rod when the cutting blade makes at least one rotation after starting the stripping of the insulating coating. Tools are provided.

Preferably,
The engaging portion has a first engaging portion and a second engaging portion.
The rotary convex portion temporarily engages with the first engaging portion after starting stripping of the insulating coating, and then immediately before the cutting blade makes one rotation, the second engaging portion. Engage in
Further provided is a plunger that temporarily holds the cam plate in a state where the rotating protrusion is separated from the first engaging portion.

Preferably,
The cam plate is formed with a plunger pin insertion hole that comes to the position of the plunger when the rotational convex portion is separated from the first engaging portion.

According to the present invention, it is possible to provide an electric wire peeling tool capable of stripping the insulating coating over the entire circumference at the cutting start portion of the cutting blade and avoiding the occurrence of unpeeled insulation coating at the cutting start portion.

It is an exploded perspective view of the electric wire peeling tool 100 to which this invention was applied. It is a front view which shows the electric wire peeling tool 100 to which this invention is applied. It is a perspective view including the front surface, the right side surface, and the plane of the electric wire peeling tool 100 to which this invention is applied. It is a perspective view which includes the front surface, the left side surface, and the plane of the electric wire peeling tool 100 to which this invention is applied. It is a perspective view which includes the back surface, the left side surface, and the plane of the electric wire peeling tool 100 to which this invention was applied. It is a right side view of the electric wire peeling tool 100 which shows the state which the opening / closing rotation mechanism 200 is closed. It is a right side view of the electric wire peeling tool 100 which shows the state which the opening / closing rotation mechanism 200 is opened. It is a figure which shows the Example of the cam plate 406. It is a figure which shows the state which looked at the opening / closing rotation mechanism 200 side from the base member 302 of the electric wire fixing mechanism 300 at the origin position. It is a figure which shows the state which looked at the opening / closing rotation mechanism 200 side from the base member 302 of the electric wire fixing mechanism 300, which is a position slightly rotated from the origin position. It is a figure which shows the state which looked at the opening / closing rotation mechanism 200 side from the base member 302 of the electric wire fixing mechanism 300, which is the position where the rotation convex part 403 is separated from the 1st engagement part 432. It is a figure which shows the state which looked at the opening / closing rotation mechanism 200 side from the base member 302 of the electric wire fixing mechanism 300 at the position where the rotation convex part 403 started to engage with the 2nd engagement part 434. It is a figure which shows the state which the opening and closing rotation mechanism 200 side was seen from the base member 302 of the electric wire fixing mechanism 300, in which the movement control rod through hole 428 is located at the other end of the movement control rod 412. It is a rear view which shows the electric wire peeling tool 100 at the time of starting the peeling of the electric wire L. It is a rear view which shows the electric wire peeling tool 100 when the peeling of the electric wire L is finished.

(Structure of wire peeling tool 100)
FIG. 1 is an exploded perspective view showing an electric wire peeling tool 100 according to an embodiment to which the present invention is applied. The electric wire peeling tool 100 is generally arranged between the open / close rotation mechanism 200, the electric wire fixing mechanism 300 for fixing the electric wire L, and the open / close rotation mechanism 200 and the electric wire fixing mechanism 300, and is a rotating portion of the open / close rotation mechanism 200. It is provided with a movement control mechanism 400 that rotates together with the wire and controls the opening / closing rotation mechanism 200 to move toward the electric wire fixing mechanism 300.

Throughout this specification, the energizing member inside the electric wire is referred to as a core wire S, and the insulating member covering the outside of the core wire S is referred to as an insulating coating H. Further, the entire core wire S covered with the insulating coating H is referred to as a covered electric wire L or simply an electric wire L.

The opening / closing rotation mechanism 200 has an opening / closing function of opening and closing by an operator using the operation rod B, and a rotation function of rotating by an operation using the operation rod B, and is in a state of sandwiching the electric wire L. By rotating the cutting blade 214 around the central axis CL of the electric wire L by the rotation function, the insulating coating H is peeled off and removed from the electric wire L.

The opening / closing rotation mechanism 200 will be briefly described with reference to FIGS. 1 to 5. The opening / closing rotation mechanism 200 according to the present embodiment generally includes a rotation base member 202, a rotation driving member 204, an opening / closing ring member 206, a holding member 208, an opening / closing tubular member 210, a cutting blade holding member 212, and the like. It includes a cutting blade 214 and an opening / closing guide member 215.

The rotation base member 202 further has a bevel gear 216 that rotates together by rotating the operation rod B.

The rotation drive member 204 has a gear 218 that meshes with the bevel gear 216 on its peripheral edge, and the rotation drive member 204 also rotates when the bevel gear 216 is rotated by the rotation of the operation rod B. Further, the rotation drive member 204 is formed in a half-split shape by the first member 220 and the second member 222. Further, an engaging pin 223 is projected from the side surface of the second member 222.

The opening / closing ring member 206 is a member having a substantially "C" shape, and is roughly composed of a first ring member 224 and a second ring member 226. Further, the first ring member 224 is attached to the first member 220 of the rotation drive member 204, and the second ring member 226 is attached to the second member 222 of the rotation drive member 204. Further, a disk-shaped cam follower 228 is projected from the side surface of the first ring member 224 toward the holding member 208.

The holding member 208 is a member having a substantially "C" cross section for holding the rotation driving member 204, the opening / closing ring member 206, and the like at a predetermined position, and the lower end portion thereof is fixed to the side surface of the rotation base member 202. ..

The opening / closing cylindrical member 210 is a substantially cylindrical member, and the first cylindrical member 230, the second cylindrical member 232, one end of the first cylindrical member 230, and one end of the second cylindrical member 232 are axes of each other. It is composed of a shaft support pin 234 to support. As a result, the first cylindrical member 230 and the second cylindrical member 232 can be opened and closed around the shaft support pin 234.

Further, the first cylindrical member 230 of the opening / closing tubular member 210 is attached to the first member 220 of the rotation driving member 204, and the second cylindrical member 232 is attached to the second member 222.

The cutting blade holding member 212 is a substantially cylindrical member, and is a cover that covers a cutting blade mounting member 236 having a substantially “C” cross section to which the cutting blade 214 is mounted and a notch portion in the cutting blade mounting member 236. It is composed of a member 238. One end of the cutting blade holding member 212 formed by combining the cutting blade mounting member 236 and the cover member 238 is formed to have a slightly smaller diameter, and this one end is inserted into the opening / closing tubular member 210. It has become like. The cutting blade mounting member 236 is attached to the second cylindrical member 232 of the opening / closing tubular member 210, and the cover member 238 is attached to the first cylindrical member 230.

That is, the first ring member 224 of the opening / closing ring member 206, the first member 220 of the rotation driving member 204, the first cylindrical member 230 of the opening / closing tubular member 210, and the cover member 238 of the cutting blade holding member 212 are fixed to each other. It is formed almost integrally. Further, the second ring member 226 of the opening / closing ring member 206, the second member 222 of the rotation driving member 204, the second cylindrical member 232 of the opening / closing tubular member 210, and the cutting blade mounting member 236 of the cutting blade holding member 212 are attached to each other. It is fixed and formed almost integrally. In particular, in FIGS. 2 and 3, the cutting blade 214 is drawn so as to be attached in a direction orthogonal to the direction in which the cutting blade holding member 212 extends, but the cutting blade 214 is provided with an insulating coating as described later. When the opening / closing rotation mechanism 200 is moved with respect to the electric wire L by the reaction force for stripping H, it is preferable that the cutting blade 214 is attached diagonally with respect to the direction in which the cutting blade holding member 212 extends.

The opening / closing guide member 215 includes a locking hook 240 and a composite hook 242. The locking hook 240 is swingably attached to the side surface of the holding member 208 toward the opening / closing ring member 206, and the holding member side hook 244 is formed at the lower end thereof.

The composite hook 242 is swingably attached to the side surface of the opening / closing ring member 206 toward the holding member 208. Further, an engaging hook 246 that engages with the engaging pin 223 protruding from the second member 222 of the rotary drive member 204 is formed at the lower end of the composite hook 242, and is engaged on the opposite side of the engaging hook 246. A holding member engaging hook 248 that engages with the holding member side hook 244 of the stop hook 240 is formed. The engaging hook 246 formed on the composite hook 242 and the holding member engaging hook 248 are formed in opposite directions to each other.

The operation of such an opening / closing rotation mechanism 200 will be briefly described. As shown in FIGS. 1 and 6, when the opening / closing rotation mechanism 200 is closed and the operation rod B is rotated to rotate the rotation drive member 204 counterclockwise in FIG. 1, the engaging hook 246 of the composite hook 242 is used. Is maintained engaged with the engagement pin 223, so that each member rotates while maintaining the closed state.

Next, the operation rod B is rotated in the reverse direction to rotate the rotation drive member 204 clockwise in FIG. Then, the holding member engaging hook 248 of the composite hook 242 engages with the holding member side hook 244 of the locking hook 240. Further, when the reverse rotation of the operation rod B is continued, the second member 222 of the rotation drive member 204 and the member attached substantially integrally with the second member 222 try to continue clockwise in the drawing, but are locked by the locking hook 240. The first ring member 224 to which the composite hook 242 is attached and the member attached substantially integrally with the first ring member 224 cannot continue clockwise, and are attached to the second member 222 of the rotary drive member 204 and substantially integrally with the second member 222. The locking hook 240 is pushed outward through the composite hook 242 so as to be pushed by the member. As a result, the first ring member 224 and the member substantially integrally attached to the first ring member 224 correspond to the corresponding member (for example, the first ring member 224, centering on the shaft support pin 234 in the opening / closing cylindrical member 210. 2 The ring member 226) is separated from the ring member 226), and the open / close rotation mechanism 200 is opened (see FIG. 7). The direction when the first ring member 224 and the member substantially integrally attached thereto are separated from the corresponding members is a guide groove formed on the side surface of the holding member 208 toward the opening / closing ring member 206. It is determined by guiding the cam follower 228 (not shown).

When the operation rod B is rotated forward from the state where the opening / closing rotation mechanism 200 is open, the first ring member 224 of the opening / closing ring member 206 pushing the locking hook 240 outwards approaches the second ring member 226 again. The composite hook 242 disengages the engagement state with the locking hook 240 and engages with the engagement pin 223 again. As a result, as described at the beginning, the open / close rotation mechanism 200 can be rotated in a closed state. Then, by this rotation, the cutting blade 214 held by the cutting blade holding member 212 also rotates around the central axis CL of the electric wire L, and the insulating coating H of the electric wire L is peeled off and removed. Then, the reaction force of the cutting blade 214 stripping off the insulating coating H urges the opening / closing rotation mechanism 200 to move toward the electric wire fixing mechanism 300.

The electric wire fixing mechanism 300 will be described again with reference to FIGS. 1 to 5. As described above, in the wire fixing mechanism 300, when the opening / closing rotation mechanism 200 rotates the cutting blade 214 to peel off and remove the insulating coating H from the wire L, the wire L may rotate undesirably or may be predetermined. It has a role of fixing the electric wire L at a predetermined position in order to prevent the electric wire L from being displaced from the center position.

The electric wire fixing mechanism 300 in the present embodiment generally includes a base member 302, an upper chuck 304, and a lower chuck 306.

The base member 302 is a plate-shaped member in which an electric wire receiving groove 308 for receiving the electric wire L is formed. The electric wire receiving groove 308 is formed in the same direction as the opening direction of the opening / closing rotation mechanism 200 (from the back side to the front side in FIG. 1) so that the electric wire L can be received in the open / closing rotation mechanism 200. Has been done.

The upper chuck 304 is attached to the side surface of the base member 302 and cooperates with the lower chuck 306 to fix the electric wire L. In the present embodiment, the upper chuck 304 includes a slide member 310, a boss 312, a slide screw 314, and an upper chuck member 316.

The slide member 310 is a member for holding the upper chuck member 316 so as to be slidable in the vertical direction with respect to the base member 302, and in the present embodiment, a substantially rectangular plate material is used. Further, a boss fitting insertion slot 318 into which the tip end portion of the boss 312 is fitted is formed in the upper portion of the slide member 310. Further, a guide groove 319 for sliding the slide member 310 diagonally in the vertical direction with respect to the base member 302 is formed on the side surface of the base member 302.

The boss 312 is a substantially columnar member for holding the slide member 310 so as to be slidable with respect to the base member 302, and the tip thereof is such that the tip thereof can be fitted into the boss fitting slot 318 of the slide member 310. The diameter of the portion is formed to be smaller than that of the other portions. Further, the rear end portion of the boss 312 is formed with a screw accommodating recess 320 that opens to the rear end surface, and a hole through which the shaft portion of the slide screw 314 can be inserted is formed on the bottom surface of the screw accommodating recess 320. Has been done.

The slide screw 314 was formed on the side surface of the base member 302 through a hole whose tip end portion was formed in the bottom surface of the screw accommodating recess 320 of the boss 312 and through the boss fitting insertion slot 318 of the slide member 310. It is attached to the screw receiving hole 322. As a result, the slide member 310 can slide with respect to the base member 302 along the guide groove 319.

The upper chuck member 316 is a member attached to the lower end of the slide member 310, and has a shape bent in a "he" shape. By applying the upper edge of the electric wire L to the central portion of the "he" shape, the position of the electric wire L can be stably held.

Further, since the upper chuck member 316 is attached to the lower end of the slide member 310 slidably held with respect to the base member 302, the upper chuck member 316 itself can slide in the vertical direction to some extent. There is. As a result, even if the diameter of the electric wire L fixed by the electric wire fixing mechanism 300 changes, the position of the upper chuck member 316 can be moved to cope with the change.

The lower chuck 306 is attached to the side surface of the base member 302 and cooperates with the upper chuck 304 to fix the electric wire L as described above. In the present embodiment, the lower chuck 306 includes a lever member 324, a lever member mounting screw 326, and a fixing operation rod mounting member 328.

The lever member 324 has a mounting screw through hole 330 formed in the center thereof, and is rotatably attached to the base member 302 around the mounting screw through hole 330. A lower chuck portion 332 for fixing the electric wire L in cooperation with the upper chuck member 316 is formed at one end of the lever member 324, and a fixing operation rod mounting member 328 is attached to the lever member 324 at the other end. It is rotatably attached to the.

As a result, after the worker attaches the tip of the fixing operation rod C to the fixing operation rod mounting member 328, the fixing operation rod C is pulled downward, so that the lever member 324 rotates around the mounting screw through hole 330. Since the lower chuck portion 332 moves upward, the electric wire L can be fixed by the lower chuck portion 332 and the upper chuck member 316.

The lower chuck portion 332 formed on the lever member 324 has a plurality of end faces 334 having different distances from the rotation center (mounting screw through hole 330) of the lever member 324. As a result, even if the diameter of the electric wire L fixed by the electric wire fixing mechanism 300 changes, it can be dealt with by changing the end surface 334 that abuts on the electric wire L.

Subsequently, the movement control mechanism 400 will be described with reference to FIGS. 1 to 5. The movement control mechanism 400 is a start position where the cutting blade 214 cuts into the insulating coating H when the opening / closing rotation mechanism 200 rotates the cutting blade 214 to peel and remove the insulating coating H from the electric wire L (hereinafter, this start). The position is referred to as "origin position"), and the opening / closing rotation mechanism 200 is restricted from moving toward the electric wire fixing mechanism 300 along the longitudinal direction of the electric wire L, and the cutting blade 214 is approximately. After one rotation, the restriction is lifted, and the opening / closing rotation mechanism 200 has a role of moving until it comes into contact with the base member 302 of the electric wire fixing mechanism 300.

The movement control mechanism 400 in the present embodiment generally includes a rotation member 402, a rotation convex portion 403, a cam plate holding member 404, a cam plate 406, a plunger pin 408, a return member 410, and a movement control rod 412. , With a guide rod 414.

The rotating member 402 is a plate material formed in a substantially "C" shape by forming an electric wire receiving notch 416 for receiving the electric wire L in a substantially disk-shaped member, and is a second plate material in the opening / closing ring member 206 of the opening / closing rotation mechanism 200. It is fixed to the ring member 226 by four fixing pins 418. Further, the direction in which the second ring member 226 of the opening / closing rotation mechanism 200 is open and the direction in which the wire receiving notch 416 is open are the same so that the electric wire L can be received in the open / closed rotation mechanism 200. The rotating member 402 is attached to the second ring member 226 so as to be oriented.

The rotation convex portion 403 is a round bar-shaped (pin-shaped) member projecting outward from the side peripheral surface of the rotating member 402. In the present embodiment, the rotary convex portion 403 is projected outward from the peripheral side surface of the rotary member 402 at a position facing the opening of the electric wire receiving notch 416. The shape of the rotating convex portion 403 is not limited to the shape of a round bar, and may be any shape as long as it projects outward from the side peripheral surface of the rotating member 402.

The cam plate holding member 404 is a member for holding the cam plate 406 at a predetermined position, and is attached to the holding member 208 of the opening / closing rotation mechanism 200 in the present embodiment. Further, on the surface of the cam plate holding member 404 toward the base member 302, a movement control rod insertion hole 420 through which the movement control rod 412 penetrates and a guide rod insertion hole 422 into which the guide rod 414 is inserted are formed. There is.

The cam plate 406 is a substantially disk-shaped member rotatably attached to the surface of the cam plate holding member 404 toward the base member 302. The shape of the cam plate 406 will be described in detail with reference to FIG. 8. A mounting screw for rotatably attaching the cam plate 406 to the cam plate holding member 404 at the center of the main body portion 423 of the cam plate 406. A mounting screw insertion hole 426 through which the 424 is inserted is formed.

Further, in the main body 423 of the cam plate 406, a movement control rod through hole 428 through which the movement control rod 412 penetrates and a plurality of plunger pin insertion holes 430 through which the plunger pin 408 is inserted are formed at appropriate positions. ing. In the present embodiment, the plunger pin insertion hole 430 has an initial position hole 430a at a position where the plunger pin 408 is inserted when the cam plate 406 is in the initial state, and the cam plate 406 is slightly clockwise in the figure. It has three plunger pin insertion holes 430, a mid-term position hole 430b in a rotated position and a final position hole 430c in a position where the movement control rod through hole 428 of the cam plate 406 coincides with the movement control rod 412. ..

Further, a first engaging portion 432 and a second engaging portion 434 that engage with the rotary convex portion 403 are projected on the side peripheral surface of the main body portion 423 of the cam plate 406. In the present embodiment, only one engaging portion 436 is projected from the side peripheral surface of the main body portion 423 of the cam plate 406, and the “C” -shaped recessed portion of the engaging portion 436 is the first engaging portion. The upper surface (the surface pointed to by reference numeral 434) in the drawing corresponds to the second engaging portion 434 in the engaging portion 436. Of course, the shapes of the first engaging portion 432 and the second engaging portion 434 are not limited to those of the present embodiment, and for example, the first engaging portion 432 and the second engaging portion 434 are separated. It may be projected from the side peripheral surface of the main body portion 423.

Returning to FIG. 1, the plunger pin 408 is a round bar-shaped member projecting from the surface of the cam plate holding member 404 toward the base member 302, and when an external force is applied in the direction of pushing the plunger pin 408, it appears and disappears (not shown). By the mechanism, the plunger pin 408 sinks into the cam plate holding member 404, and when the external force is released, the plunger pin 408 protrudes from the cam plate holding member 404 again.

The return member 410 is a member that urges a rotational force with respect to the cam plate 406. In the present embodiment, the torsion spring is used as the return member 410, but the return member 410 is not limited to this, and other materials can be used.

One end of the movement control rod 412 is fixed to the side surface of the base member 302 by a fixing screw 438 or the like, and the other end is a rod-shaped member extending toward the surface of the cam plate 406 where the movement control rod through hole 428 is formed. be. The length of the movement control rod 412 is such that the other end of the movement control rod 412 just abuts on the surface of the cam plate 406 toward the base member 302 when the open / close rotation mechanism 200 and the cam plate 406 are at the origin position. It is set.

Further, a movement control rod insertion hole 420 for the cam plate holding member 404 is provided at a position where the other end of the movement control rod 412 is extended along the longitudinal direction of the movement control rod 412.

The guide rod 414 is a member that serves as a guide when the opening / closing rotation mechanism 200 moves toward the base member 302 of the electric wire fixing mechanism 300 while peeling off the insulating coating H of the electric wire L with the cutting blade 214. Although two guide rods 414 are used in the present embodiment, the number of guide rods 414 is not limited to this, and may be one or three or more.

One end of the guide rod 414 is inserted into the guide rod insertion hole 336 formed on the side surface of the base member 302, and the other end of the guide rod 414 is inserted into the guide rod inserted on the side surface of the cam plate holding member 404 as described above. It is fitted and fixed in the hole 422. Further, the length of the guide rod 414 is such that when the opening / closing rotation mechanism 200, the cam plate 406, etc. are at the origin position, the other end penetrates the guide rod fitting insertion hole 422 and protrudes into the opening / closing rotation mechanism 200, or at least the guide. It is designed to be located in the rod fitting hole 422. Further, the direction in which the guide rod 414 extends is parallel to the longitudinal direction of the electric wire L correctly fixed to the electric wire peeling tool 100.

(Operation of the wire peeling tool 100 according to the embodiment)
Next, an operation of peeling the insulating coating H of the electric wire L by using the electric wire peeling tool 100 described above will be described. First, the operator activates the opening / closing rotation mechanism 200 of the electric wire peeling tool 100 by rotating the operation rod B in the reverse direction, opens the electric wire peeling tool 100 (state shown in FIG. 7), and sets the electric wire L at a predetermined position. After that, the operator closes the wire peeling tool 100 by rotating the operation rod B in the forward direction (states shown in FIGS. 6 and 14). In this state, the cutting blade 214 cuts into the insulating coating H of the electric wire L, and further, as shown in FIG. 9, the cam plate 406 is set at the “cam plate origin position”.

In the case of the present embodiment, the "cam plate origin position" is a position where the movement control rod through hole 428 formed in the main body portion 423 of the cam plate 406 is displaced from the movement control rod 412, and three plunger pins are inserted. The initial position hole 430a of the holes 430 is in a position corresponding to the plunger pin 408, and the first engaging portion 432 is in a position where it can be engaged with the rotary convex portion 403.

When the operator further rotates the operation rod B in the forward direction from this state, the cutting blade 214 is rotated around the central axis CL of the electric wire L by the opening / closing rotation mechanism 200, and the insulating coating H is stripped off. Then, as shown in FIG. 10, the movement control mechanism 400 starts to rotate the cam plate 406 clockwise in the figure by the rotation convex portion 403 engaged with the first engaging portion 432 by the rotation of the rotating member 402.

At this stage, the opening / closing rotation mechanism 200 tries to move toward the electric wire fixing mechanism 300 due to the reaction force of the cutting blade 214 stripping off the insulating coating H, but the movement control rod 412 extending from the base member 302 of the electric wire fixing mechanism 300 Since the other end does not reach the position of the movement control rod through hole 428 formed in the cam plate 406, the movement control rod 412 has the cam plate 406, the cam plate holding member 404, and the opening / closing rotation mechanism 200 connected to the cam plate 406. It is holding back the movement toward the wire fixing mechanism 300.

When the operation rod B is further rotated forward, as shown in FIG. 11, the rotation convex portion 403 rotates to a position away from the first engaging portion 432. Even at this stage, since the other end of the movement control rod 412 has not reached the position of the movement control rod through hole 428, the open / close rotation mechanism 200 still cannot move toward the wire fixing mechanism 300, and the cutting blade 214 strips off the insulating coating H on the plane orthogonal to the central axis CL of the electric wire L.

Further, at this stage, the intermediate position hole 430b of the plunger pin insertion hole 430 comes to a position corresponding to the plunger pin 408, so that the tip of the plunger pin 408 protruding from the cam plate holding member 404 by the appearance mechanism (not shown). The portion fits into the mid-term position hole 430b. As a result, even if the rotational convex portion 403 is separated from the first engaging portion 432, the cam plate 406 retains the position shown in FIG. 11 against the rotational urging force from the return member 410.

After that, when the operation rod B is rotated in the forward direction, the cam plate 406 still holds the position shown in FIG. 11, so that the opening / closing rotation mechanism 200 can still move toward the electric wire fixing mechanism 300. Instead, the cutting blade 214 will continue to strip off the insulating coating H on the plane orthogonal to the central axis CL of the electric wire L.

When the cutting blade 214 rotates about once from the origin position, as shown in FIG. 12, the rotating convex portion 403 that has made one turn engages with the second engaging portion 434, and the rotating convex portion 403 is the cam plate 406. Is given a rotational force to rotate clockwise in the figure. Due to this rotational force, the peripheral edge of the plunger pin insertion hole 430 pushes the plunger pin 408 in the direction of being immersed in the cam plate holding member 404, the plunger pin 408 comes out of the plunger pin insertion hole 430, and the cam plate 406 It becomes rotatable.

Immediately before the rotation convex portion 403 separates from the second engaging portion 434 by further rotating the opening / closing rotation mechanism 200, the movement control rod through hole 428 is the other end of the movement control rod 412 as shown in FIGS. 13 and 15. Come to the position of. Further, at this time, the final position hole 430c of the plunger pin insertion hole 430 is at a position corresponding to the plunger pin 408, and the tip end portion of the plunger pin 408 fits into the final position hole 430c. As a result, even if the rotational convex portion 403 is separated from the second engaging portion 434, the cam plate 406 retains the position shown in FIGS. 13 and 15 against the rotational urging force from the return member 410.

Then, the open / close rotation mechanism 200 that can be moved toward the electric wire fixing mechanism 300, and the cam plate holding member 404 and the cam plate 406 attached to the open / close rotation mechanism 200 start moving toward the electric wire fixing mechanism 300, and the movement is controlled. The other end of the rod 412 fits into the movement control rod through hole 428.

When the other end of the movement control rod 412 is fitted into the movement control rod through hole 428, the cam plate 406 is maintained in that state against the rotational urging force from the return member 410, and thus the cutting blade 214 rotates. Then, as the insulating coating H is peeled off, the opening / closing rotation mechanism 200 moves toward the electric wire fixing mechanism 300 due to the reaction force to be peeled off, and the rotation member 402 is the base member 302 from the origin position. The insulating coating H of the electric wire L is stripped off by the distance until it comes into contact with the side surface). Up to this point, the peeling work of the electric wire L is completed.

When the peeling work is completed, the operator rotates the operation rod B in the reverse direction to open the open / close rotation mechanism 200, and further operates the lever member 324 of the electric wire fixing mechanism 300 to release the fixed state of the electric wire L to release the electric wire. Remove the wire peeling tool 100 from L.

After removing it from the electric wire L, the opening / closing rotation mechanism 200 and the like are pushed back in the direction away from the electric wire fixing mechanism 300. When the opening / closing rotation mechanism 200, the cam plate holding member 404, and the cam plate 406 are pushed back to the origin position, the movement control rod 412 is pulled out from the movement control rod through hole 428. Then, the worker returns the cam plate 406 to the "cam plate origin position".

(Characteristics of the wire peeling tool 100 according to the embodiment)
According to the electric wire peeling tool 100 according to the above-described embodiment, the cutting blade 214 makes one rotation from the "cutting start point of the cutting blade 214" in which the cutting blade 214 cuts into the insulating coating H with the electric wire L set. Since the movement of the opening / closing rotation mechanism 200 including the cutting blade 214 toward the electric wire fixing mechanism 300 is regulated by the movement control mechanism 400 (specifically, the movement control rod 412), the cutting blade 214 is , The insulating coating H is stripped in the direction orthogonal to the longitudinal direction (central axis CL) of the electric wire L. As a result, the insulating coating H can be peeled off over the entire circumference when viewed on a plane orthogonal to the central axis CL of the electric wire L, including the "cutting start point of the cutting blade 214" in the electric wire L, and the insulating coating H can be peeled off. You can avoid the rest.

Further, when the cutting blade 214 makes one rotation at the cutting start point, the other end of the movement control rod 412 is fitted into the movement control rod through hole 428 toward the electric wire fixing mechanism 300 of the opening / closing rotation mechanism 200 including the cutting blade 214. Since the movement restriction is lifted, the opening / closing rotation mechanism 200 including the cutting blade 214 due to the reaction force when the cutting blade 214 peels off the insulating coating H is the electric wire fixing mechanism 300 along the central axis CL of the electric wire L. Move towards. Therefore, the operator can continue the peeling work by simply continuing to rotate the operation rod B in the forward direction.

In the above-described embodiment, the opening / closing rotation mechanism 200 moves toward the wire fixing mechanism 300 by the reaction force of the cutting blade 214 stripping off the insulating coating H, but this is the mechanism for moving the opening / closing rotation mechanism 200. For example, as disclosed in "Patent Document 1", a "spiral protrusion" is provided on the inner surface of the cutting blade mounting member 236 and the cover member 238 constituting the cutting blade holding member 212. As a result, the moving force of the opening / closing rotation mechanism 200 with respect to the electric wire L may be generated so that the opening / closing rotation mechanism 200 moves toward the electric wire fixing mechanism 300.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims, not the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

100 ... Wire peeling tool 200 ... Open / close rotation mechanism, 202 ... Rotation base member, 204 ... Rotation drive member, 206 ... Open / close ring member, 208 ... Holding member, 210 ... Open / close tubular member, 212 ... Cutting blade holding member, 214 ... Cutting blade, 215 ... Open / close guide member, 216 ... Bevel gear, 218 ... Gear, 220 ... First member, 222 ... Second member, 223 ... Engagement pin, 224 ... First ring member, 226 ... Second ring member, 228 ... Cam follower, 230 ... 1st cylindrical member, 232 ... 2nd cylindrical member, 234 ... Shaft support pin, 236 ... Cutting blade mounting member, 238 ... Cover member, 240 ... Locking hook, 242 ... Composite hook, 244 ... Holding Member side hook, 246 ... Engagement hook, 248 ... Holding member Engagement hook 300 ... Wire fixing mechanism, 302 ... Base member, 304 ... Upper chuck, 306 ... Lower chuck, 308 ... Wire receiving groove, 310 ... Slide member, 312 ... Boss, 314 ... Slide screw, 316 ... Upper chuck member, 318 ... Boss fitting slot, 319 ... Guide groove, 320 ... Screw storage recess, 322 ... Screw receiving hole, 324 ... Lever member, 326 ... Lever member Mounting screw 328 ... Fixed operation rod mounting member, 330 ... Mounting screw through hole 332 ... Lower chuck part 334 ... End face 336 ... Guide rod insertion hole 400 ... Movement control mechanism, 402 ... Rotating member, 403 ... Rotating convex Part, 404 ... Cam plate holding member, 406 ... Cam plate, 408 ... Plunger pin, 410 ... Return member, 412 ... Movement control rod, 414 ... Guide rod, 416 ... Wire receiving notch, 418 ... Fixed pin, 420 ... Movement control Rod insertion hole, 422 ... Guide rod fitting hole, 423 ... Main body (of cam plate 406), 424 ... Mounting screw, 426 ... Mounting screw insertion hole, 428 ... Movement control rod through hole, 430 ... Plunger pin insertion hole, 432 ... 1st engaging part, 434 ... 2nd engaging part, 436 ... engaging part, 438 ... fixing screw L ... wire (covered wire), S ... core wire, H ... insulation coated CL ... (wire L) center Axis B ... Operation rod, C ... Fixed operation rod

Claims (3)

A cutting blade that strips off the insulation coating of the wire to expose the core wire by rotating around the central axis of the wire.
An electric wire fixing mechanism for fixing the electric wire and
It is equipped with a movement control mechanism that controls the cutting blade to move toward the electric wire fixing mechanism.
The movement control mechanism is
A rotating member that rotates with the cutting blade,
A rotating convex portion projecting from the rotating member,
A cam plate that has an engaging portion that engages with the rotating convex portion and is rotated by the rotating convex portion.
One end is attached to the wire fixing mechanism, and the other end has a movement control rod that abuts on the cam plate.
The cam plate is formed with a movement control rod through hole that comes to the position of the other end of the movement control rod when the cutting blade makes at least one rotation after starting the stripping of the insulating coating. .. The engaging portion has a first engaging portion and a second engaging portion.
The rotary convex portion temporarily engages with the first engaging portion after starting stripping of the insulating coating, and then immediately before the cutting blade makes one rotation, the second engaging portion. Engage in
The wire peeling tool according to claim 1, further comprising a plunger that temporarily holds the cam plate in a state where the rotating convex portion is separated from the first engaging portion. The electric wire peeling tool according to claim 2, wherein the cam plate is formed with a plunger pin insertion hole that comes to the position of the plunger when the rotary convex portion is separated from the first engaging portion.

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