JP5851466B2 - Advanced tools for indirect hot wire work - Google Patents

Description

  The present invention relates to a tip tool for indirect hot-line work having a knife. In particular, the present invention relates to a tip tool for indirect hot-line work that can adjust the angle of a knife to an angle (direction) that facilitates work.

  2. Description of the Related Art Conventionally, an indirect hot line method using a common operation rod connected to a tip tool is known for hot line work for distributing power over an overhead line or the like without an interruption. With the indirect hot wire method using the tip tool, power distribution work can be performed without directly touching the overhead wire that is energized. In such an indirect hot wire operation, a cutting tool attached with a knives-type knife is used for cutting or peeling off the insulating tape or the like (see Patent Document 1).

JP 2011-161080 A

  As described above, conventionally, when cutting or stripping an insulating tape or the like, a tip tool with a kama-type knife is used. However, in the case of a tip tool having such a knife, a sharp knife is always exposed. Therefore, there is a problem that handling is troublesome from the viewpoint of safety. For example, when there is an obstacle around the electric wire to be cut or stripped of the insulating tape, the cutting edge of the knife of the tip tool may not reach the position of the insulating tape. For this reason, indirect hot-line work with the tip tool is hindered, and the working efficiency is lowered, such as changing the angle with the common operation rod.

  The present invention has been made to solve such a problem, and the tip (angle) of the knife of the tip tool can be adjusted to an arbitrary angle, and the tip for indirect hot-line work with safety is provided. The purpose is to provide a tool.

  (1) A tip tool for indirect hot-line work according to the present invention is provided at a knife part, a support cylinder part supported at the lower end part of the knife part, and a lower end part of the support cylinder part. A tip tool having a joint cylinder part connected to the connection part of the common operation rod, and a cylinder part that covers the knife part and accommodates the knife part therein, the cylinder part being The knife portion is provided movably between an accommodation position where the knife portion is accommodated inside the cylindrical body portion and a protruding position where the knife portion is projected outward from the inside of the cylindrical body portion, and the cylindrical body portion is located at the protruding position. A fixing mechanism for fixing the knife portion to the protruding position, and an angle displacement mechanism for displacing the angle of the knife portion to a predetermined angle with respect to the axial direction of the support cylinder portion when the knife portion is protruded to the protruding position. The angular displacement mechanism is a lower end portion of the knife portion. Is formed, it is formed on the upper end of the support tube portion and the first inclined portion having a predetermined inclination angle, with a predetermined angle, and a second inclined portion that engages with the first inclined portion.

  (2) In the tip tool for indirect hot-wire work according to the present invention, the angular displacement mechanism may be configured such that when the angle of the knife portion is displaced to a predetermined angle, the first inclined portion and the second inclined portion. It is preferable to provide an angle holding mechanism for holding the angle.

  (3) In the tip tool for indirect hot wire work according to the present invention, the fixing mechanism includes a groove formed along the axial direction of the inner peripheral surface of the cylindrical body portion, and an outer side from the outer peripheral surface of the support cylindrical portion. It is preferable to include an engaging protrusion that is formed so as to protrude into the groove and engages with the groove.

  (4) The tip tool for indirect hot-wire work according to the present invention preferably includes a biasing member that biases the position of the cylindrical body portion so that the knife portion becomes the storage position.

  (5) The tip tool for indirect hot-wire work according to the present invention preferably includes a biasing member that biases the position of the cylindrical body portion so that the knife portion becomes the first position.

  The tip tool for indirect hot-line work by this invention can accommodate a knife in the inside of a cylinder part, and can adjust the angle of a knife to arbitrary angles.

It is a longitudinal section showing the whole tip tool composition concerning one embodiment of the present invention (at the time of accommodation of a knife part). It is a longitudinal cross-sectional view which shows the whole structure of the tip tool which concerns on one Embodiment of this invention (at the time of the protrusion of a knife part). It is a whole lineblock diagram showing angle adjustment of a knife part. It is a longitudinal cross-sectional view which shows the whole structure of a cylinder part. It is a top view which shows the whole structure of a knife part and a support cylinder part. It is a front view which shows an example of the common operation stick used for a tip tool.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Initially, the whole structure of the tip tool for indirect hot wire work by one Embodiment of this invention is demonstrated.
FIG. 1 is a longitudinal sectional view showing the overall configuration of a tip tool according to an embodiment of the present invention (when the knife portion is accommodated). FIG. 2 is a longitudinal sectional view showing the entire configuration of the tip tool according to the embodiment of the present invention (when the knife portion protrudes). FIG. 3 is an overall configuration diagram showing the angle adjustment of the knife portion. FIG. 4 is a plan view showing the entire configuration of the knife part and the support cylinder part. FIG. 5 is a vertical cross-sectional view showing the overall configuration of the cylindrical portion.

  The tip tool 1 for indirect hot-wire work of the present invention is connected to the tip of a common operation rod 70 (see FIG. 6) and used for indirect hot-wire work for cutting or stripping off insulation tape or the like. This is a tip tool 1.

  The feature of the tip tool 1 of the present invention is that, when the knife portion 10 (see FIG. 1) is not used in the tip tool 1, the knife portion 10 is accommodated inside the cylindrical portion 30 (see FIG. 1). Moreover, when using the knife part 10, it exists in being able to adjust the direction (angle) of the knife part 10 to the arbitrary inclination angles which are easy to work.

  As shown in FIG. 1, when the knife portion 10 is not used in the tip tool 1, the knife portion 10 is in a state of being housed inside the cylindrical body portion 30. On the other hand, as shown in FIG. 2, the knife portion 10 is protruded from the upper portion of the cylindrical body portion 30 when, for example, an insulating tape or the like is cut or peeled off.

  That is, when the cylindrical part 30 is moved upward (in the direction of arrow A in FIG. 1), the knife part 10 is accommodated in the cylindrical part 30. Further, the knife portion 10 can be protruded from the cylindrical portion 30 when the cylindrical portion 30 is moved downward (in the direction of arrow B in FIG. 2). As will be described later, the position in which the knife portion 10 is accommodated inside the cylindrical body portion 30 is the engagement protrusion 43 (see FIG. 1) of the support cylindrical portion 40 and the fixed groove portion 35 positioned below the cylindrical body portion 30. (See FIG. 4). Moreover, the position where the knife part 10 protruded from the cylinder part 30 is the engagement of the engagement protrusion 43 (refer FIG. 2) and the fixed groove part 36 (refer FIG. 4) located in the upper part of the cylinder part 30. FIG. Fixed. As described above, when the knife portion 10 protrudes from the upper portion of the cylindrical body portion 30, the knife portion 10 can adjust the direction (angle) of the knife portion 10 to an arbitrary angle at which it is easy to work.

Next, with reference to FIGS. 1-5, the detail of a structure of the tip tool 1 is demonstrated.
As shown in FIGS. 1 and 2, the tip tool 1 includes a long knife part 10 and a cylindrical cylindrical part 30 that covers the entire knife part 10. The cylindrical body portion 30 has an opening 31 and an opening 32 on the upper surface and the lower surface thereof. The knife part 10 protrudes from the opening part 31 of the cylindrical part 30.

  The knife part 10 has a support cylinder part 40 at the lower end part. The knife portion 10 includes a blade portion (blade) 20 for cutting or peeling off an insulating tape, a ridge portion 21 for holding the knife portion 10, and a flange portion 11. The flange part 11 has the joining cylinder part 12 in a lower end part. The joining cylinder part 12 has the inclination part 13 formed in the predetermined angle (about 30 degree | times in FIG. 1, FIG. 2) in the lower end part. The inclined portion 13 (see FIG. 5) of the knife portion 10 is formed to be inclined toward the lower side (lower side in FIG. 5). Further, the end of the inclined portion 13 of the knife portion 10 has an inclined surface 14. A plurality of recesses (not shown) are formed on the inclined surface 14. A hard rubber material having elasticity is used for the plurality of recesses (not shown).

  The support cylinder part 40 is formed as a long cylindrical cylinder having substantially the same dimension as the length of the knife part 10. Moreover, the support cylinder part 40 has the connection cylinder part 44 in a lower end part. The connection cylinder part 44 functions as a connection part that connects the joint cylinder part 60 that connects the tip tool 1 to the common operation rod 70 (see FIG. 6).

  The joint tube portion 60 has a tube body portion 61 that is generally cylindrical. The cylinder main body 61 has a notch 62 that is located on the opposite side of the cylinder body 61 and is notched in a substantially T shape. The notch 62 includes an insertion groove 63 that extends from the lower side (lower side of FIGS. 1 and 2) of the cylinder body 61 to the upper side (upper side of FIGS. 1 and 2), and both sides in the orthogonal direction from the insertion groove 63. The extending parallel groove portion 64 and the engaging groove portion 65 extending from one end side to the lower side of the parallel groove portion 64 are provided. The joint cylinder portion 60 functions as an attachment portion when the tip tool 1 is attached to the common operation rod 70 (see FIG. 6).

  Moreover, the support cylinder part 40 (refer FIG. 5) has a pair of engagement protrusion part 43 (refer FIG. 5) which protrudes outward in two positions of the outer peripheral surface. As will be described later, the pair of engaging protrusions 43 protruding from the support cylinder part 40 move along the engaging groove part 34 (see FIG. 4) of the cylindrical body part 30, and the fixed groove part 35 (see FIG. 4). ) Or the fixing groove 36 (see FIG. 4).

  Moreover, the support cylinder part 40 has the inclination part 41 formed in the upper end part at the predetermined angle (FIG. 1, FIG. 2 about 30 degree | times). The inclined portion 41 of the support cylinder portion 40 is formed so as to skew toward the upper side (upper side in FIG. 5). Further, the end portion of the inclined portion 41 of the support cylinder portion 40 has an inclined surface 42. A plurality of convex portions (not shown) are formed on the inclined surface 42. A plurality of convex portions (not shown) formed on the inclined surface 42 of the inclined portion 41 of the support cylinder portion 40 are a plurality of concave portions (not shown) formed on the inclined surface 14 of the inclined portion 13 of the knife portion 10. Can be freely engaged. A hard rubber material having elasticity is used for the plurality of convex portions (not shown).

  That is, the inclined surface 14 of the inclined portion 13 and the inclined surface 42 of the inclined portion 41 are bonded to the lower end portion of the bonding cylinder portion 12 (see FIG. 1) of the knife portion 10 and the upper end portion of the support cylinder portion 40, respectively. Thus, an upright knife portion 10 is configured. Specifically, a plurality of concave portions (not shown) of the inclined surface 14 of the inclined portion 13 of the knife portion 10, and a plurality of convex portions (not shown) of the inclined surface 42 of the inclined portion 41 of the support cylinder portion 40 are provided. The state in which the concave and convex portions coincide with each other is a state in which the knife portion 10 is upright. For this reason, in the state which the inclined surface 14 of the inclined part 13 of the knife part 10 and the inclined surface 42 of the inclined part 41 of the support cylinder part 40 engage (match), and the knife part 10 stands upright, it is the cylinder part 30. The knife part 10 can be accommodated in the inside.

  Further, the inclined surface 14 of the inclined portion 13 of the knife portion 10 and the inclined surface 42 of the inclined portion 41 of the support cylinder portion 40 constitute an angle adjusting mechanism 50. By displacing the joining position of the inclined surface 14 of the inclined portion 13 of the knife portion 10 and the inclined surface 42 of the inclined portion 41 of the support tube portion 40 by the angle adjusting mechanism 50, the knife is moved relative to the support tube portion 40. The direction (angle) of the part 10 can be adjusted. Here, details of the angle adjustment mechanism 50 of the tip tool 1 will be described later.

  As shown in FIGS. 1 and 2, the cylindrical portion 30 is movable in the upward direction (in the direction of arrow A in FIG. 1) and downward direction (in the direction of arrow B in FIG. 2) along the axial direction of the knife portion 10. Is provided. The cylindrical body part 30 functions as a safety cover that covers the entire knife part 10. Therefore, the length dimension (full length) of the cylinder part 30 has a dimension longer than the length of the knife part 10.

  The cylinder part 30 has the opening part 31 and the opening part 32 in the upper surface and the lower surface, respectively. The knife portion 10 of the tip tool 1 protrudes upward through the opening 31 of the cylindrical portion 30. Here, a compression spring (not shown) is interposed between the upper portion (opening 31) of the cylindrical portion 30 and the flange portion 11. For this reason, when the cylinder part 30 is moved and the fixation by the engagement between the engagement protrusion 43 (see FIG. 2) and the fixing groove part 36 (see FIG. 2) is released, the cylinder part 30 is compressed by a compression spring ( By the elastic force (repulsive force) (not shown), it automatically moves upward (in the direction of arrow A in FIG. 1) and accommodates the knife portion 10.

  As shown in FIG. 4, the cylindrical body portion 30 includes longitudinal engagement groove portions 34 formed in the longitudinal direction along the axial direction (vertical direction in FIG. 4) at two positions on the inner peripheral surface thereof, and the engagement portion 34. It has the fixed groove part 35 and the fixed groove part 36 which extended at right angles from the both ends of the lower part (lower side of FIG. 4) and upper part (upper side of FIG. 4) of the joint groove part 34, respectively. The engaging groove part 34 regulates the moving direction of the cylinder part 30 when operating the movement of the cylinder part 30 in the vertical direction (the directions of arrows A and B in FIGS. 1 and 2).

  That is, the cylindrical body portion 30 is moved upward (in the direction of arrow A in FIG. 1), and the engaging protrusion 43 of the support cylindrical portion 40 is positioned at the lower portion of the cylindrical body portion 30 (see FIGS. 1 and 4). ), The knife portion 10 can be accommodated inside the cylindrical body portion 30.

  Further, the cylindrical body portion 30 is moved downward (in the direction of arrow B in FIG. 2), and the engaging protrusion 43 of the support cylindrical portion 40 is fixed to the fixed groove portion 36 (FIGS. 1 and 4) positioned above the cylindrical body portion 30. The knife portion 10 can be protruded from the cylindrical body portion 30 by being engaged with the reference portion).

  More specifically, as shown in FIG. 1, when the knife portion 10 is accommodated in the cylindrical body portion 30 when the knife portion 10 is not used, the engaging protrusion 43 (see FIG. 2) and the fixing groove 36 (see FIG. 2) of the cylindrical body portion 30 are released, and the cylindrical body portion 30 is moved upward (in the direction of arrow A in FIG. 1). That is, when the cylindrical body portion 30 is moved upward in this way, the engagement protrusion 43 (see FIG. 1) of the support cylindrical portion 40 is formed in the engagement groove portion 34 formed on the inner peripheral surface of the cylindrical body portion 30. It moves along, and engages with the fixed groove part 35 (refer FIG. 4) formed in the cylinder part 30. FIG.

  Thereby, the cylinder part 30 can be fixed to the position where the knife part 10 is accommodated in the cylinder part 30. Here, a compression spring (not shown) is interposed between the upper part of the flange part 11 and the upper surface plate part (not shown) of the cylindrical body part 30. Therefore, when the cylinder part 30 is moved and the fixation by the engagement between the engaging protrusion 43 and the fixing groove part 36 (see FIG. 2) is released, the cylinder part 30 is elastic of a compression spring (not shown). The knife portion 10 can be accommodated by automatically moving upward (direction A in FIG. 1) by force.

  On the other hand, as shown in FIG. 2, when the knife portion 10 is used, when the knife portion 10 is protruded from the cylindrical body portion 30, the engaging protrusion 43 (see FIG. 1) of the support cylinder portion 40 and the fixed groove portion 35. The fixation with (see FIG. 1) is released, and the cylindrical portion 30 is moved downward (in the direction of arrow B in FIG. 2). That is, when the cylindrical body portion 30 is moved downward as described above, the engagement protrusion 43 (see FIG. 2) of the support cylindrical portion 40 is engaged with the engagement groove portion 34 formed on the inner peripheral surface of the cylindrical body portion 30. , And engages with a fixing groove 36 (see FIG. 2) formed in the cylindrical body portion 30. Thereby, the cylinder part 30 can be fixed to the position where the knife part 10 protrudes. Here, as described above, a compression spring (not shown) is interposed between the upper surface plate portion (not shown) of the cylindrical body portion 30 and the upper surface of the flange portion 11 (see FIG. 2). . Therefore, in order to perform the protrusion operation of the knife portion 10, the cylindrical portion 30 is pushed down (in the direction of arrow B in FIG. 2) against the elastic force (repulsive force) of a compression spring (not shown). It becomes.

[Angle Adjustment Method of Knife Part 10 by Angle Adjustment Mechanism 50 of Tip Tool 1]
Next, details of the angle adjustment mechanism 50 of the knife portion 10 by the tip tool 1 will be described.
As shown in FIG. 3, the knife part 10 of the tip tool 1 is a position (solid line) in which the knife part 10 is displaced to an arbitrary angle from a position where the knife part 10 is in an upright state (position of a two-dot chain line). Can be inclined to the position of Moreover, the knife part 10 can be fixed in the state inclined by arbitrary angles. That is, the tip tool 1 includes an inclined surface 14 of the inclined portion 13 of the knife portion 10 and an inclined portion 41 of the support cylinder portion 40 that supports the inclined surface 14 of the knife portion 10 from the lower side (lower side in FIG. 3). The angle adjustment function by the angle adjustment mechanism 50 is exhibited by joining the inclined surface 42.

  For this reason, the angle adjustment mechanism 50 can be adjusted by displacing the inclination angle of the knife portion 10 with respect to the support cylinder portion 40 within a predetermined angle (0 to 180 degrees). The inclination angle (solid line position in FIG. 3) of the knife part 10 shown in FIG. 3 is the maximum inclination angle obtained by rotating the knife part 10 180 degrees from the upright state (0 degree).

  That is, the ridge portion 21 of the knife portion 10 is held by hand, and the knife portion 10 is rotated to an arbitrary position in a predetermined direction (the arrow X1 direction in FIG. 3). Specifically, the operator of the indirect hot wire work visually determines the position of the electric wire to be worked and obstacles around the electric wire, and adjusts the direction (angle) of the knife portion 10 of the tip tool 1. .

  In this case, the knife portion 10 is in a state where the concave portion (not shown) of the inclined surface 14 of the inclined portion 13 and the convex portion (not shown) of the inclined surface 42 of the inclined portion 41 of the support cylinder portion 40 are in close contact. Rotates while engaging. Actually, the inclined surface 14 of the knife portion 10 and the inclined surface 42 of the support tube portion 40 have an elliptical cross section, respectively, so that the substantially central portion of the inclined surface 14 and the inclined surface 42 serves as a fulcrum. 14 and the inclined surfaces 42 rotate while closely contacting each other. And the position (angular position) of the knife part 10 displaced to the predetermined angle is adjusted by the uneven | corrugated engagement of the recessed part (not shown) of the inclined surface 14, and the convex part (not shown) of the inclined surface 42. FIG. It is fixed at a predetermined angle. In this case, it can be fixed while maintaining a predetermined angle by a function similar to a so-called clutch. Moreover, the position of the knife part 10 with respect to the support cylinder part 40 can be changed by changing the grip position of the common operation rod 70.

  As described above, since the knife portion 10 can be accommodated in the cylindrical body portion 30 in an upright state, the knife portion 10 is counterclockwise (in the direction indicated by the arrow X2 in FIG. 3) after being adjusted to a predetermined angle. ) To a position where the knife portion 10 is in an upright state (inclination angle is 0 degree). And the engagement position of the inclined surface 14 of the inclined portion 13 of the knife portion 10 and the inclined surface 42 of the inclined portion 41 of the support cylinder portion 40 are completely matched (matched), and the knife portion 10 in an upright state is It can be accommodated in the cylindrical body 30.

[Procedure for attaching the tip tool 1 to the common operation rod 70]
Next, a procedure for attaching the tip tool 1 to the common operation rod 70 will be described with reference to FIGS. 1 and 6.
FIG. 6 is a front view showing an example of a common operation rod applied to the tip tool for indirect hot-line work of the present invention.
As shown in FIG. 6, the common operation rod 70 includes a tool attachment portion 71, a handle portion 72, and a grip portion 73. The common operation rod 70 is formed into a hollow cylindrical shape by an insulating material such as plastic. The tool attachment portion 71 serves as an attachment portion for detachably attaching the joint tube portion 60 (see FIG. 1) of the tip tool 1. The grip portion 73 is subjected to anti-slip processing so that an operator who performs an indirect hot-line operation can easily grip it. In addition, a conical safety cover 74 and a safety cover 75 are provided on the upper portion and the lower portion of the handle portion 72, respectively. The safety cover 74 and the safety cover 75 prevent water adhering to the peripheral surface portion of the tool attachment portion 71 from dripping.

  The tool attachment portion 71 includes a shaft portion 76 that protrudes from the upper side (the upper side in FIG. 6) of the handle portion 72, and a pair of pin portions 77 and 77 that protrude in the opposite direction from the outer peripheral surface of the shaft portion 76. ing. A circular projecting portion 78 is provided on the upper portion of the shaft portion 76. The circular protrusion 78 is biased upward (upper side in FIG. 6) by a compression coil spring (not shown) provided inside the tool attachment portion 71.

  When the tip tool 1 is mounted on the common operation rod 70, the pair of pin portions 77 of the common operation rod 70 are parallel to each other via the vertical groove portion 63 of the notch portion 62 of the joint cylinder portion 60 (see FIG. 1). Engage with the groove 64. Then, after the shaft portion 76 of the common operation rod 70 is engaged to the back side of the joint cylinder portion 60, the common operation rod 70 is rotated so as to be twisted. Accordingly, the pair of pin portions 77 can be engaged and fixed to the engaging groove portion 65 of the notch portion 62 (see FIG. 1), and the tip tool 1 can be attached to the common operation rod 70.

As described above, the tip tool 1 can be easily and reliably attached to the common operation rod 70 simply by attaching the joint cylinder portion 60 to the distal end portion of the common operation rod 70.
Moreover, since the knife part 10 of the tip tool 1 is accommodated in the inside of the cylinder part 30, the safety at the time of attaching the tip tool 1 to the common operation rod 70 can be ensured.

[Other embodiments]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment. For example, it is good also as a structure which provides a rotation support pin in the center part of the inclined surface 14 of the inclined part 13 of the knife part 10, and the inclined surface 42 of the inclined part 41 of the support cylinder part 40. FIG. In this case, the angle of the knife portion 10 can be reliably rotated to a predetermined angular position using the rotation support pin as a fulcrum.

  The tip tool 1 according to the present invention can be expected to have the following effects.

(1) The angle of the knife portion 10 projected from the tip tool 1 can be adjusted to an arbitrary angle by a simple manual operation, and is determined in a state where the adjusted knife portion 10 is displaced to an arbitrary angle. Can be fixed at the angular position. Therefore, it is possible to avoid an extra effort such as greatly changing the direction and angle of the common operation rod 70 and preparing a plurality of knives having different sizes and shapes (different angles).
(2) Since the angle of the knife portion 10 protruded from the upper part of the tip tool 1 can be adjusted to an angle at which it is easy to work, even if there are obstacles around the wire to be worked, Since the angle of the knife portion can be arbitrarily adjusted at an appropriate time according to the position of the electric wire, the indirect hot wire operation can be performed efficiently and accurately.
(3) In the tip tool 1, when the knife part 10 is not used, the knife part 10 can be accommodated in the cylindrical part 30 that functions as a safety cover, so that safety can be ensured and indirect using the tip tool 1 It is possible to improve the work efficiency by the live line work.
(4) Normally, the knife part 10 is accommodated in the cylindrical part 30 of the tip tool 1. Therefore, the safety at the time of the mounting | wearing operation | work which mounts | wears with the front-end | tip tool 1 at the front-end | tip of the common operation stick | rod 70 can be aimed at. In addition, it is possible to reduce work loads such as attaching / detaching work of the tip tool 1, preparation of the tip tool 1, and management work.
(5) Since the tip tool 1 can be detachably attached to the tip of the general-purpose common operation rod 70, work at a high place is not necessary, and the knife part 10 is used to cut insulating tape or the like. Thus, it is possible to improve safety and work efficiency when performing indirect hot-line work by stripping work.

DESCRIPTION OF SYMBOLS 1 Tip tool 10 Knife part 11 Flange part 12 Joining cylinder part 13, 41 Inclined part 14, 42 Inclined surface 20 Blade part 21 Peak part 30 Cylindrical part 31, 32 Opening part 34 Engaging groove part 35, 36 Fixed groove part 40 Support cylinder Part 41 Inclined part 44 Connection cylinder part 60 Joint cylinder part 61 Cylinder body part 62 Notch part 63 Vertical groove part 64 Parallel groove part 65 Engagement groove part 70 Common operation rod 71 Tool attachment part 72 Handle part 73 Grip part 74, 75 Safety cover 76 Shaft part 77 Pin part 78 Circular protrusion

Claims (4)

A knife part, a support cylinder part supporting the lower end part of the knife part at the upper end part, a joint cylinder part provided at a lower end part of the support cylinder part and connected to a connection part of a common operation rod, and the knife part A cylindrical body part that covers the knife part and accommodates the knife part therein,
The cylindrical portion is provided movably between an accommodation position where the knife portion is accommodated inside the cylindrical portion and a protruding position where the knife portion protrudes from the inside of the cylindrical portion to the outside. A fixing mechanism for fixing the cylindrical portion to the protruding position;
An angular displacement mechanism for displacing the angle of the knife portion to a predetermined angle with respect to the axial direction of the support tube portion when the knife portion is protruded to the protruding position;
The angular displacement mechanism is formed at a lower end portion of the knife portion, and is formed at a first inclined portion having a predetermined inclination angle and an upper end portion of the support cylinder portion, has a predetermined angle, and the first inclined portion. And a second inclined portion engaged with,
Tip tool. The angle displacement mechanism includes an angle holding mechanism that holds an angle between the first inclined portion and the second inclined portion when an angle of the knife portion is displaced to a predetermined angle.
The tip tool according to claim 1.   The fixing mechanism includes a groove formed along the axial direction of the inner peripheral surface of the cylindrical body portion, and an engagement formed so as to protrude outward from the outer peripheral surface of the support cylindrical portion and engage with the groove portion. The tip tool according to claim 1 or 2, comprising a protrusion.   The tip tool in any one of Claims 1-3 provided with the urging member which urges | biases the position of the said cylinder part so that the said knife part may become the said accommodation position.

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