Rod body coupling structure

Abstract

To provide a rod body coupling structure capable of further securing safety.SOLUTION: A coupling structure 10 for coupling a coupled part to a rod body comprises a first coupling member 50 arranged in an area on a rod body side, and a second coupling member 80 arranged in on a coupled part side coupled to the rod body. Fixing means 16 constituting separation prevention means to prevent a part coupled by the coupling structure from separating is arranged in an area on the coupled part side coupled to the rod body, and in the second coupling member, fixing means for stopping the fixing means on the rod body side is formed on the coupled part side coupled to the rod body. The first coupling member is arranged on a rod body side movably in an axial direction of the rod body. When the coupled part is mounted to the rod body, the first coupling member is fixed to the second coupling member on the first coupling member side by the fixing means, controls movement of the second coupling member, and is formed so that the fixing means on the rod body side is not detached from the fixing means formed in the second coupling member.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a connecting structure for a rod body, and in particular to a connecting structure for an insulated control rod for indirect work used for indirect live-line work, for example, and a tip tool or the like connected thereto. [Background technology]

[0002] Conventionally, several proposals have been made regarding a connection structure between a tool for indirect live-line work and an insulated operating rod for indirect live-line work (Patent Documents 1 to 3). In indirect live-line construction work, it is extremely important to ensure the safety of workers during the work, and care is taken to ensure that various indirect live-line construction tools, such as strippers which are freely connected to the end of the insulated control rod, do not fall off inadvertently during work. The connecting structure of Prior Art Document 1 adds a second shift groove portion having a substantially horizontal L-shape consisting of a horizontal groove portion and a vertical groove portion to a first shift groove portion having a substantially inverted L-shape consisting of a vertical groove portion, a horizontal groove portion and a vertical groove portion, or forms an additional vertical groove in the vertical groove. Even if the pin moves to the top end in the vertical groove, it is prevented from slipping out to the side, and the pin is unlikely to come out of the hooking groove. The connecting structure of Prior Art Document 2 has a common operating rod having a connection portion capable of connecting a rod-shaped member and a tool tip, and a fixing portion for locking the tool tip, and the fixing portion is composed of a core portion in which inclined portions are connected like an abacus bead, and a slide member that can slide along the axial direction of this core portion and abut against the tool tip, and the slide member is formed so that each abutment portion of the pressing portion presses the core portion in the radial direction of the core portion, thereby tightening and fixing the tool tip. The connecting structure of Prior Art Document 3 is such that the tool part has a cylindrical shaft part, a pair of push buttons, and two leaf springs, and the connecting fitting has a shaft hole and a pair of cutout grooves into which the shaft part can be introduced and fitted, and the knob can be grasped to cause the latch plate to appear and disappear from the recess, thereby connecting the operating rod and the tip tool. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-199861 A [Patent Document 2] JP 2013-102629 A [Patent Document 3] JP 2017-99141 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, it is difficult to say that the connection structures in the inventions of Patent Documents 1 to 3 ensure sufficient safety. The present invention has been made in consideration of the above circumstances, and has an object to provide a rod body connecting structure that can further ensure safety. [Means for solving the problem]

[0005] The rod body connecting structure according to claim 1 of the present invention is a connecting structure capable of connecting and locking a rod body and a connected part connected to the rod body, and comprises a core member configured to connect the connecting part on the rod body side with the connecting part on the connected part side, a first connecting member disposed on the rod body side so as to be movable in the axial direction of the rod body in the rod body side region, a second connecting member disposed in the connected part side region, and a third connecting member fitted into the core member and also fitted into the first connecting member, the first connecting member being annular and surrounding the core member. the second connecting member is formed with a connecting portion attachment hole that is inserted into the core member, the third connecting member is configured to be interposed between the first connecting member and the second connecting member with its tip side contacting the proximal end edge of the second connecting member and contacting the proximal end edge of the inner circumferential surface of the hollow portion of the first connecting member, and is configured such that the connecting portion on the rod body side and the connecting portion on the connected portion side are connected by combining the core member with the connecting portion attachment hole, and the core member has a shape that is inserted into a hollow portion provided in the second connecting portion of the second connecting member, a columnar core member mounting portion provided in the connecting portion mounting hole, the core member having a hollow annular portion drilled in the longitudinal direction, the hollow portion having a first hollow portion that is elongated and narrowed in the center, and a second hollow portion formed on the tip side of the first hollow portion, the first connecting member being configured to be moved by rotating and stopped at a position suitable for pressing the second connecting member by the third connecting member; the rod body is provided with fixing means constituting a separation prevention means that prevents items connected by the connecting structure from separating, in an area on the connected portion side connected to the rod body, the second connecting member is formed with fixing means for stopping the fixing means on the rod body side, in an area on the connected portion side connected to the rod body, and when the connected portion is connected to the rod body, the third connecting member is fixed to the first connecting member side area of ​​the second connecting member by the fixing means, controlling the movement of the second connecting member so that the fixing means on the rod body side does not come off the fixing means formed on the second connecting member. The rod body connecting structure according to claim 2 of the present invention is a connecting structure capable of connecting and locking a rod body and a connected part connected to the rod body, and comprises a core member configured to connect the connecting part on the rod body side with the connecting part on the connected part side, a first connecting member disposed on the rod body side so as to be movable in the axial direction of the rod body in the rod body side region, a second connecting member disposed in the connected part side region, and a third connecting member fitted into the core member and the first connecting member, the first connecting member being annular and fitted around the core member. The second connecting member is formed with a connecting portion attachment hole that is fitted and inserted into the core member, and the third connecting member is configured to be interposed between the first connecting member and the second connecting member with its tip side contacting the proximal end edge of the second connecting member and contacting the proximal end edge of the inner circumferential surface of the hollow portion of the first connecting member, and is configured so that the connecting portion on the rod body side and the connecting portion on the connected portion side are connected by combining the core member with the connecting portion attachment hole, and the core member has a shape that is fitted and inserted into a hollow portion provided in the second connecting portion of the second connecting member, and the connecting portion attachment hole A columnar core member attachment portion is provided therein, and the core member has a hollow annular portion drilled in the longitudinal direction, and a first hollow portion that is elongated and narrow is formed in the center of the hollow portion, and a second hollow portion is formed on the tip side of the first hollow portion, and the first connecting member can be moved by rotating it and stopped at a position suitable for pressing the second connecting member with the first connecting member, and the connecting portion on the rod body side and the connecting portion on the connected part side have a convex portion formed on one side and a concave portion formed on the other side, and the convex portion and the concave portion are arranged to be in contact with each other. a third connecting member and a second connecting member are configured to be combined and connected to each other, the first connecting member and the second connecting member are configured to be separated by moving the connected first connecting member and second connecting member in opposite directions, the rod body is provided with a deterrent means that constitutes a separation prevention means that prevents separation of the members connected by the connecting structure, and the deterrent means is configured to press the third connecting member toward the second connecting member so that the convex portion and the concave portion that are engaged when connected do not separate. The rod body connecting structure of claim 3 of the present invention is a rod body connecting structure as described in claim 1 or 2, in which a second resilient member is disposed in a second hollow portion existing between the proximal end of the columnar core member mounting portion and the boundary wall portion of the first hollow portion of the hollow portion, and the second resilient member is configured to contract and push the columnar core member mounting portion and the second connecting portion toward the tip side when locked, and is configured to be in a lightly contracted state in the locked state and to be further contracted when the second connecting member is pulled toward the proximal side in an unlocking operation. Effect of the Invention

[0006] According to the present invention, it is possible to provide a rod body connecting structure that can ensure even greater safety.

[0007] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention, which refers to the drawings. [Brief description of the drawings]

[0008] [Figure 1] 1 is a front diagrammatic view of a connection structure according to a first embodiment of the present invention; [Diagram 2] FIG. 2 is a front sectional view of the connection structure shown in FIG. [Diagram 3] 2A is a cross-sectional diagram of the connection structure shown in FIG. 1, (A) is a cross-sectional diagram of FIG. 1A1-A1, (B) is a cross-sectional diagram of FIG. 1B1-B1, and (C) is a cross-sectional diagram of FIG. 1C1-C1. [Figure 4] 2A and 2B are front sectional diagrams illustrating the operation of the connecting structure shown in FIG. 1, in which (A) shows an unlocked state, and (B) shows a state in which the connecting portion has been removed. [Diagram 5] FIG. 2 is a perspective view of the connecting structure shown in FIG. 1 in an exploded state. [Figure 6] FIG. 2 is an exploded sectional view of the connecting structure shown in FIG. 1; [Figure 7] FIG. 2 is a perspective view of an operating rod having the connecting structure shown in FIG. [Figure 8]2 is a perspective view illustrating a state in which a connecting portion of the connecting structure illustrated in FIG. 1 is removed. FIG. [Figure 9] FIG. 2 is an exploded perspective view of the connecting structure shown in FIG. 1; [Figure 10A] FIG. 11 is a partially sectional front view of a connecting structure according to a second embodiment of the present invention; [Figure 10B] FIG. 6 is a front sectional view of a connecting structure according to a second embodiment of the present invention; [Figure 10C] 10B , (B) is a cross-sectional view taken along line B2-B2 of FIG. 10B, and (C) is a cross-sectional view taken along line C2-C2 of FIG. 10B. [Figure 11] 11A and 11B are front sectional diagrams illustrating the operation of the connecting structure shown in FIG. 10, in which (A) shows an unlocked state, and (B) shows a state in which the connecting portion has been removed. [Figure 12] FIG. 11 is an exploded perspective view of the connecting structure shown in FIG. 10. [Figure 13] FIG. 11 is an illustrative sectional view showing the connecting structure shown in FIG. 10 in an exploded state. [Figure 14] FIG. 11 is a perspective view of an operating rod having the connecting structure shown in FIG. [Figure 15] 11 is a perspective view of the connecting structure shown in FIG. 10 with a connecting portion removed. FIG. [Figure 16A] 11A and 11B are diagrams showing a connection structure according to a third embodiment of the present invention, in which (A) is a front diagram and (B) is a front sectional diagram. [Figure 16B] 10A to 10C are cross-sectional diagrams of a connecting structure according to a third embodiment of the present invention, in which (A) is a cross-sectional view taken along A3-A3 in FIG. 10B, (B) is a cross-sectional view taken along B3-B3 in FIG. 10B, and (C) is a cross-sectional view taken along C3-C3 in FIG. 10B. [Figure 17] 13A and 13B are cross-sectional diagrams showing the operation of a connecting structure according to a third embodiment of the present invention, in which FIG. 13A shows an unlocked state, and FIG. 13B shows a state in which the connecting portion has been removed. [Figure 18] FIG. 17 is a perspective view of the connecting structure shown in FIG. 16 in an exploded state. [Figure 19] FIG. 17 is a perspective view of the connecting structure shown in FIG. 16 in an exploded state. [Figure 20] FIG. 17 is a perspective view of an operating rod having the connecting structure shown in FIG. 16. [Figure 21] 17 is a perspective view of the connecting structure shown in FIG. 16 with the connecting portion removed. FIG. [Figure 22] FIG. 13 is a front diagrammatic view of a connecting structure according to a fourth embodiment of the present invention. [Figure 23] FIG. 23 is a perspective view of the connecting structure shown in FIG. 22 in an exploded state. [Figure 24] 23A and 23B are diagrams illustrating the connection structure shown in FIG. 22 in an exploded state, in which (A) is a perspective diagram, (B) is a plan diagram, and (C) is a cross-sectional diagram along lines aa, bb, and cc in FIG. (B). [Diagram 25] 23 is a perspective view of the connecting structure shown in FIG. 22, with a portion thereof in section. FIG. [Figure 26] FIG. 23 is a perspective view of the connecting structure shown in FIG. 22 in an exploded state. [Figure 27] FIG. 23 is a perspective view of the connecting structure shown in FIG. 22 in an exploded state. [Figure 28] FIG. 23 is a front view of the core member of the connection structure shown in FIG. 22. [Figure 29] 23 is a perspective view of the connecting structure shown in FIG. 22 with the connecting portion removed. FIG. [Diagram 30] FIG. 23 is a perspective view of the connection structure shown in FIG. 22. [Diagram 31] FIG. 23 is a perspective view of the connection structure shown in FIG. 22. [Diagram 32] 23A and 23B are front diagrammatic views of the connecting structure shown in FIG. 22, in which (A) is a diagram showing a locked state, and (B) is a diagram showing a provisionally locked state. [Diagram 33] 23A and 23B are front diagrammatic views of the connecting structure shown in FIG. 22, in which (A) shows an unlocked state, and (B) shows a connecting portion detached state. [Diagram 34] FIG. 23 is a perspective view of an operating rod having the connecting structure shown in FIG. 22. [Diagram 35] FIG. 2 is a perspective view of a modified operating rod having the connecting structure shown in FIG. 1. [Diagram 36] FIG. 11 is a perspective view of a modified operating rod having the connecting structure shown in FIG. 10. [Figure 37] FIG. 17 is a perspective view of a modified operating rod having the connecting structure shown in FIG. 16. [Figure 38] FIG. 23 is a perspective view of a modified operating rod having the connecting structure shown in FIG. 22. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (definition) The side of the rod body according to the present invention that is held by hand is referred to as the handle or handle side, and the tip side opposite the handle side is referred to as the tip or tip side. In the rod body according to the present invention, the center line extending in the longitudinal direction is referred to as the axis line, the direction in which the axis line extends is referred to as the axial direction, and the direction along the outer periphery of the rod body is referred to as the circumferential direction.

[0010] Representative examples of the rod body connecting structure of the present invention include a connecting structure at the tip side of the rod body between the tip of the rod body and a portion of a connecting tool that is attached to the rod body, or a connecting structure that connects two divided rod bodies. In this specification, the connecting tool, the tool tip and one of the two divided parts are referred to as a connecting tool.

[0011] In an operating rod 12 which is a rod body which is one embodiment of the present invention, a connection structure 10 which connects a connecting part which is connected to a connector and a connected part which is connected to a tip tool 14 which is a connector connected to the operating rod 12 relates to a connection structure between an insulated operating rod for indirect live-line work which is used in indirect live-line work carried out to avoid power outages around a work site, for example, and a connected part which is connected to the operating rod 12 in a connector such as a tip tool which is freely replaceably connected to the tip of the insulated operating rod for indirect live-line work which is used in indirect live-line work carried out to avoid power outages around a work site.

[0012] Generally, an insulated control rod is composed of a long insulated control rod and an electric work tool, i.e., a tip tool, attached to the tip of the rod, and is used by changing the tip tool appropriate for the purpose of the work, such as gripping or cutting high-voltage distribution lines. The operating rod 12 according to the present invention is used for the same purpose as the insulated operating rod, and the operating rod 12 may be referred to as an insulated operating rod.

[0013] A connecting structure 10, which is one embodiment of the present invention, is a connecting structure that connects a connecting portion of an operating rod 12, which is a rod body, to another object and a connected portion of an end tool 14, which is connected to the operating rod 12, to which the operating rod 12 is connected.

[0014] The connecting portion 24 on the side of the operating rod 12, which is a rod body, and the connecting portion 32 on the side of the connected part are formed with a convex portion on one side and a concave portion on the other side, and are configured so that the convex portion and the concave portion are combined to connect. In this embodiment, a convex portion is formed in the connecting portion 24 (on the operating rod side), and a concave portion is formed in the connecting portion 32 (on the tool tip side).

[0015] The operating rod 12 has a first connecting member 50 arranged in the region of the connecting portion of the operating rod 12 that is connected to another part of the operating rod 12, and the tip tool 14 has a second connecting member 80 arranged in the region of the connected portion of the tip tool 14 that is connected to the operating rod 12. The operating rod 12 is provided with a fixing means 16 constituting a separation prevention means for preventing separation of items connected by a connecting structure in the region connected to the tip tool 14, and the second connecting member 80 is provided with a fixing means 16 constituting a separation prevention means for preventing separation of items connected by a connecting structure that stops the fixing means 16 in the region connected to the operating rod 12, and a first fixing groove 90 constituting the fixing means 16 is formed. The first connecting member 50 is arranged on the operating rod 12 so as to be movable in the axial direction of the operating rod, and when the tip tool 14 is attached to the operating rod 12 and a locked state is established in which the connecting portion 24 (on the operating rod side) and the connecting portion 32 (on the tip tool side) are connected, the first connecting member 50 is fixed to the area of ​​the second connecting member 80 on the first connecting member 50 side by the fixing means 16 of the operating rod 12, thereby controlling the movement of the second connecting member 80 and preventing the fixing means 16 of the operating rod 12 from coming out of the first fixing groove 90 of the fixing means 16 of the second connecting member 80.

[0016] The fixing means 16 provided on the operating rod 12 is configured to move in the axial direction of the operating rod 12 relative to the tip tool 14 as the operating rod 12 moves, and is configured to rotate in the circumferential direction of the operating rod 12.

[0017] The first connecting member 50 may be formed so as to cover the fixing means 16 on the side of the operating rod 12 when the operating rod 12 is attached to the second connecting member 80 on the tool tip 14 side by the fixing means 16 on the side of the operating rod 12.

[0018] The first connecting member 50 is formed so that when the operating rod 12 is attached to the second connecting member 80 on the tip tool 14 side by the fixing means 16 on the operating rod 12 side, the end of the second connecting member 80 on the first connecting member 50 side is pressed from the hand side toward the tip side.

[0019] The fixing means 16 is constituted by a fixing pin 60 constituting a first fixing protrusion formed on the connecting portion 24 on the operating rod 12 side, and / or The fixing means 16 is constituted by a second fixing convex portion (plunger) 62 formed on the first connecting member 50 on the operating rod 12 side. The other fixing means 16 formed in the second connecting member 80 is configured by a winding fixing groove formed at a corresponding position in the first connecting member 50 and / or the second connecting member 80. The winding fixing grooves (first fixing groove 90 and second fixing groove 92) are configured to be substantially U-shaped in plan view so as to form an opening-side groove portion extending toward the tip side from an opening into which the first fixing protrusion (pin) 60 and the plunger 62 constituting the second fixing protrusion are axially fitted, a groove portion extending in the circumferential direction from the opening-side groove portion, and a fixing groove portion extending in the axial direction toward the proximal side by changing the extending direction.

[0020] The fixing means 16 is constituted by the fixing pin 60 and the plunger 62 on the connecting portion side of the operating rod 12 , and the first fixing groove 90 on the connected portion side connected to the operating rod 12 . The fixing pin 60 and the plunger 62 are provided so as to protrude in the radial direction of the operating rod 12 . The fixing groove 90 has a depth that allows the head of the fitted fixing pin 60 to protrude slightly and a width that allows the fitted fixing pin 60 and the shaft portion of the plunger 62 to move, and is configured so that the fixing pin 60 and plunger 62 do not move when the tip tool 14 is attached to the operating rod 12 in the connecting structure 10.

[0021] The fixing means 16 on the operating rod 12 side is constituted by a second fixing convex portion (plunger) 62 constituting a positioning member formed on the first connecting member 50, and the second fixing convex portion (plunger) 62 constituting the positioning member may be formed so as to fit into a second fixing groove 92, which is the fixing means 16 arranged on the second connecting member 80.

[0022] The first connecting member 50 may be configured to be screwed into the second connecting member 80 of the connecting part 32 (on the tool tip side) or the connecting part 24 on the side of the operating rod 12 when the connecting part 32 (on the tool tip side) which constitutes the connected part to which the tool tip 14 is connected is attached to the connecting part 24 (on the operating rod side) which constitutes the connecting part to which the tool tip 14 is connected to something else on the operating rod 12, and may be configured so that it does not come off the second connecting member 80 when the tool tip 14 is fixed to the operating rod 12.

[0023] The connecting portion 24 on the rod body side and the connecting portion 32 on the connected portion side are formed with a first fixing convex portion 60 as the fixing means 16 constituting a convex portion on one side, and a first fixing groove 90 as the fixing means 16 constituting a concave portion on the other side, and are configured so that the convex portion and the concave portion are combined and connected. The first connecting member 50 is disposed on the rod body side so as to be movable in the axial direction of the rod body, The second connecting member 80 is disposed on the connected portion side so as to be movable toward the connected portion, The first connecting member 50 and the second connecting member 80 are configured to be separated by moving the connected first connecting member 50 and the second connecting member 80 in opposite directions, The operating rod 12 is provided with a prevention means 18 that constitutes a separation prevention means for preventing separation of the components connected by the connection structure. The restraining means 18 is configured to press the first connecting member 50 toward the second connecting member 80, preventing the first fixing convex portion 60, which is the fixing means 16 constituting the convex portion that is engaged when connected, and the first fixing groove 90, which constitutes the concave portion, from separating.

[0024] The connecting portion 24 (on the operating rod side) and / or the connecting portion 32 (on the tip tool side) are provided with a restraining means 18 that resiliently recoils from the hand side of the operating rod 12 toward the tip tool 14 side or from the tip tool 14 side toward the operating rod 12 side.

[0025] The restraining means 18 is constituted by a resilient member 70, The resilient member 70 is arranged so as to press the first connecting member 50 towards the connected portion, or so as to press the first fixing convex portion 60 and the first fixing groove 90 which form the recessed portion that are engaged when the second connecting member 80 is connected so as to prevent them from separating. The resilient member 70 is interposed between the connecting portion 24 (on the operating rod side) or the tool portion (tip tool portion) 30 so as to press the first connecting member 50 toward the tip tool 14, or to press the fixing means 16 into the fixing groove 90.

[0026] The operating rod 12 has a first connecting portion 40 which is thinner than the operating rod main body 20 formed on the side where it is connected to the tip tool, and a second connecting portion 42 which is thicker than the first connecting portion 40 is connected to the tip tool 14 side of the first connecting portion 40. The first connecting portion 40 is configured to form a movement space for the first connecting member 50 in the axial direction between itself and the operating rod body 20. The first connecting portion 40 can have a coil spring, which is a resilient member 70 constituting the restraining means 18, disposed around it. When the connecting part 32 (on the tip tool side), which is the connected part, is attached to the connecting part 24 on the rod body side (on the operating rod side) in a locked state, the first connecting member 50 is fixed to the first connecting member side region of the second connecting member 80 by the fixing means 16, and is formed to control the movement of the second connecting member 80 so that the fixing means 16 on the rod body side does not come off the fixing means 16 formed on the second connecting member 80.

[0027] In this embodiment, the operating rod body 20 of the operating rod 12 has an approximately circular cross-section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 have an approximately circular cross-section, the first connecting member 50 has an approximately circular cross-section, and the second connecting member 80 has an approximately circular cross-section. The operating rod body 20, the core member 44, the first connecting member 50 and the second connecting member 80 of the operating rod 12 are arranged in parallel with each other, with the center line extending in the axial direction of the rod body being concentric.

[0028] The connecting part 24 on the side of the operating rod 12, which is a rod body, and the connecting part 32 on the side of the connected part are arranged in parallel, concentrically about a center line extending in the axial direction of the rod body, with a convex part formed on one side and a concave part formed on the other, and are configured so that the convex part and the concave part are combined and connected. In this embodiment, a core member 44 constituting a convex portion is formed in the connecting portion 24 (on the operating rod side), and a rod side connecting portion mounting hole 94 constituting a concave portion is formed in the connecting portion 32 (on the tip tool side). The core member 44 is a rod-shaped body with an approximately circular cross-section, and the rod-side connecting part mounting hole 94 is an annular body with an approximately circular cross-section, and is aligned concentrically with a center line extending in the axial direction of the rod body. By combining the core member 44 with the rod-side connecting part mounting hole 94, the connecting part 24 on the operating rod 12 side and the connecting part 32 on the connected part side are configured to be connected.

[0029] The first connecting member 50 is disposed on the operating rod 12 in the region on the hand side of the operating rod 12 divided into two parts, The second connecting member 80 can be disposed on the operating rod 12 that is split into two and is located on the tool tip side.

[0030] (First embodiment)

[0031] A connecting structure 10 according to a first embodiment of the present invention will be described mainly with reference to FIGS. The connecting structure 10, which is the first embodiment of the present invention, is a connecting structure that connects an operating rod 12 that constitutes a rod body and a connecting portion of a tool tip 14 that constitutes a connected part connected to the operating rod 12.

[0032] The operating rod 12 comprises an operating rod body 20 which constitutes the main body of a long cylindrical rod, a gripping portion 22 attached to the rear end, i.e., the front side, of the operating rod body 20, and a connecting portion 24 (on the operating rod side) formed on the tip side of the operating rod body 20, i.e., the area on the side that is attached to the tip tool 14.

[0033] The structure of the operating rod 12 constituting the insulated operating rod for indirect live-line work, particularly the operating rod body 20, may be, for example, a single rod body, or two rod bodies arranged with their axes parallel to each other. The insulated control rod for indirect live-line work should be electrically insulating, and it is better if it can be made light. For example, various types of plastics with strength, such as fiber reinforced plastics (FRP), can be used.

[0034] The tip tool 14, such as an indirect live-line construction tool, is composed of, for example, a stripper for stripping the insulating coating of a live overhead distribution line, pliers, a fastening tool, and the like. The tip tool 14 comprises a tool portion 30 that directly contacts an electric wire or the like, and a connecting portion 32 (on the tip tool side) that constitutes a connected portion, which is formed in the area where the tool portion 30 is connected to the operating rod 12.

[0035] The connecting part 24 on the side of the operating rod 12, which is a rod body, and the connecting part 32 on the side of the connected part are arranged in parallel, concentrically about a center line extending in the axial direction of the rod body, with a convex part formed on one side and a concave part formed on the other, and are configured so that the convex part and the concave part are combined and connected. In this embodiment, a core member 44 constituting a convex portion is formed in the connecting portion 24 (on the operating rod side), and a rod side connecting portion mounting hole 94 constituting a concave portion is formed in the connecting portion 32 (on the tip tool side). The core member 44 is a rod-shaped body with an approximately circular cross-section, and the rod-side connecting part mounting hole 94 is an annular body with an approximately circular cross-section, and is aligned concentrically with a center line extending in the axial direction of the rod body. By combining the core member 44 with the rod-side connecting part mounting hole 94, the connecting part 24 on the operating rod 12 side and the connecting part 32 on the connected part side are configured to be connected.

[0036] The operating rod 12 is provided, in the area on the side connected to the tool tip 14, with a fixing means 16 which constitutes a separation prevention means for fixing the tool tip 14 and preventing the components connected by the connecting structure from separating. Furthermore, in the area of ​​the operating rod 12 that is connected to the tip tool 14, a restraining means 18 is provided that constitutes a separation prevention means for preventing the movement of the operating rod 12 and the tip tool 14 so that the connection between them is not released, and for preventing the items connected by the connecting structure from separating.

[0037] The connecting portion 24 of the operating rod 12, which constitutes the connecting portion of the rod body, is composed of a core member 44 in which a first connecting portion 40 thinner than the operating rod main body 20 is formed on the side where it is connected to the operating rod main body 20, and a second connecting portion 42 thicker than the first connecting portion 40 is connected to the tip tool 14 side of the first connecting portion 40.

[0038] The core member 44 that constitutes the connecting portion 24 (on the operating rod side) of the operating rod main body 20 is connected to the operating rod main body 20 by a (first) operating rod mounting member 26 and fixing pins 26a and 26b that constitute the operating rod mounting member.

[0039] (1) In this embodiment, the operating rod mounting member 26 and the core member 44 are fitted into a recess 20a provided on the tip side of the operating rod main body 20, as shown in Figure 3 (C), and fixed by fixing pins 26a and 26b. The first connecting portion 40 of the core member 44 is fitted around the (first) operating rod mounting member 26 and fitted into a recessed portion 20a provided at the tip of the operating rod body 20, and is fixed to the operating rod body 20.

[0040] In this embodiment, the connecting portion 24 (on the operating rod side) is provided with a core member 44 that constitutes the first connecting portion 40 and the second connecting portion 42. The core member 44 has a hollow cylindrical shape, and is disposed around the (first) operating rod mounting member 26 and the (second) operating rod mounting member 28 that constitute the operating rod mounting members.

[0041] In this embodiment, the core member 44 constitutes a first connecting portion 40 on the proximal side formed of a cylindrical portion thinner than the operating rod main body 20 so as to be attached to the operating rod main body 20, and a second connecting portion 42 on the tip side formed of a thick cylindrical portion thicker than the thin first connecting portion 40 on the proximal side.

[0042] The core member 44 has a shape that is inserted into the rod side connecting portion mounting hole 94 formed in a hollow portion provided in the second connecting portion 84 of the second connecting member 80, and in this embodiment is configured in a cylindrical shape that can slide within the hollow portion.

[0043] The core member 44 has a hollow annular portion 46 drilled in the longitudinal direction. The hollow portion 46 has a first hollow portion 46a that is elongated and narrowed at approximately the center, and a second hollow portion 46b that is relatively thick and has a diameter longer than that of the first hollow portion 46a is formed on the tip side of the first hollow portion 46a. Furthermore, the hollow portion 46 has a third hollow portion 46c that is relatively thick and has a diameter greater than that of the first hollow portion 46a, formed on the proximal side of the first hollow portion 46a.

[0044] In the core member 44, a control rod attachment member ((first) control rod attachment member 26) for attachment to the control rod body 20 is disposed in the third hollow portion 46c of the hollow portion 46. The operating rod mounting member (the (first) operating rod mounting member 26) is fixed to the tip of the operating rod main body 20, and the third hollow portion 46c of the core member 44 is fitted around and attached to the (first) operating rod mounting member 26. (2) The operating rod mounting member 28 is inserted into the hollow portion 46, with its proximal side positioned within the third hollow portion 46c, and its tip side slidably fitted into the first hollow portion 46a, and further, the tip side extends toward the tip side through the second hollow portion 46b and is connected to the columnar core member mounting portion 96. In this embodiment, the (second) operating rod mounting member 28 is a cylindrical rod body, and has a head portion with a diameter larger than that of the first hollow portion 46a at the proximal side, and a rod-shaped body with a diameter substantially equal to that of the first hollow portion 46a at the distal end side. Therefore, the second hollow portion 46b is configured to leave a hollow portion between the (second) operating rod mounting member 28 and the second hollow portion 46b, so that the second resilient member 76 can be fitted therein.

[0045] The connecting portion on the rod body side and the connecting portion on the connected portion side are configured so that a first fixing convex portion 60 serving as fixing means 16 constituting a convex portion is formed on one side, and a first fixing groove 90 serving as fixing means 16 constituting a concave portion is formed on the other side, and the convex portion and the concave portion are combined to connect.

[0046] The fixing means 16 is constituted by a first fixing protrusion (pin) 60 which is formed on the connecting portion on the rod body side and constitutes a separation prevention means, The fixing means formed on the second connecting member 80 or the fixing means 16 formed on the core member 44 is constituted by a first fixing groove 90 which is a fixing groove constituting a tortuous separation prevention means formed at a corresponding position on the core member 44 and / or the second connecting member 80.

[0047] In this embodiment, the core member 44 has a first fixing protrusion (pin) 60 that constitutes the fixing means 16 attached on the second connecting portion 42 side, and a resilient member 70 that constitutes the restraining means 18 interposed around it on the first connecting portion 40 side.

[0048] The connecting portion 24 (on the operating rod side) is equipped with a core member 44 fixed to the center at the tip of the operating rod body 20, and a first connecting member 50 is disposed around the core member 44. Furthermore, the connecting portion 24 (on the operating rod side) is provided with a restraining means 18 around the proximal side of the core member 44, which is configured to resiliently repel the operating rod 12 from the proximal side toward the tip tool 14 side. In the first embodiment, a resilient member attachment portion 72 for fixing the tip end side of the resilient member 70 is formed on the proximal side of the first connecting member 50. Furthermore, the operating rod body 20 of the operating rod 12 has a resilient member mounting portion 74 formed on the tip side on the side facing the outer surface of the hand side of the first connecting member 50 for fastening the rear end side of the resilient member 70. The resilient member 70 constituting the restraining means 18 is configured to urge the first connecting member 50 toward the second connecting member 80 constituting the connected portion when the tip tool 14 is attached to the operating rod 12.

[0049] The first resilient member 70 constituting the restraining means 18 pushes the first connecting member 50 toward the tip end when locked, and accordingly pushes the second connecting member 80 toward the tip end. (Types 1, 3, and 4)

[0050] The diameter of the restraining means 18 (resilient member 70 ) is shorter than the diameters of the first connecting member 50 and the resilient member mounting portion 74 , and is configured not to protrude from the first connecting member 50 and the resilient member mounting portion 74 . Therefore, there is a very low probability that the deterrent 18 will strike other items when in use.

[0051] The first connecting portion 40 is configured to form a movement space for the first connecting member 50 described later between it and the operating rod main body 20, and the second connecting portion 42 is configured to have the first fixing protrusion (pin) 60 arranged therearound and to insert the second connecting member 80 constituting the connecting portion 32 (on the tip tool side).

[0052] The first connecting member 50 is annular and fitted around the approximately cylindrical core member 44. It is configured to be freely movable in the longitudinal direction of the core member 44 and the operating rod main body 20, and is configured to be resilient toward the tip side by a resilient member 70 interposed between the proximal side of the first connecting member 50 and the tip side of the operating rod main body 20. The first fixing protrusion (pin) 60 is formed in the center of the connecting portion 24 (on the operating rod side) so as to extend in the radial direction. The first fixed convex portion (pin) 60 is formed so as to be able to move in the axial direction of the operating rod 12 as the operating rod 12 moves, relative to the tip tool 14, and so as to be able to rotate in the circumferential direction of the operating rod 12 as the operating rod 12 rotates.

[0053] The connecting portion 32 (on the tool tip side) constitutes a mounting portion that is attached to the operating rod 12, and a second connecting member 80 is provided that is formed so as to be able to connect the connecting portion 24 on the operating rod 12 side. The second connecting member 80 is formed, in a region on the side connected to the operating rod 12, with a first fixing groove 90 serving as fixing means 16 for stopping the first fixing protrusion (pin) 60 disposed in the connecting portion 24 on the side of the operating rod 12. The first fixing groove 90 constitutes the fixing means 16 for fixing the first fixing protrusion (pin) 60 when the connecting portion 24 (on the operating rod side) and the connecting portion 32 (on the tool tip side) are connected by fitting the first fixing groove 90.

[0054] The first connecting member 50 and the second connecting member 80 have almost the same or similar outer shapes; in this embodiment, they are cylindrical with a circular cross-section, and the diameters of their outer surfaces have the same or similar dimensions. Therefore, there is almost no step at the boundary between the second connecting member 80 and the first connecting member 50, and the probability of hitting something else is extremely low.

[0055] The first connecting member 50 and the second connecting member 80 are configured so that their contacting surfaces are in close contact with each other, and the first connecting member 50 is configured to press the second connecting member 80 by the biasing force of the restraining means 18 (resilient member 70). In this embodiment, the tip surface 50E of the first connecting member 50 is a plane perpendicular to the axial direction, and the rear end surface 80E of the second connecting member 80 is a plane perpendicular to the axial direction. Therefore, the tip surface 50E of the first connecting member 50 and the rear end surface 80E of the second connecting member 80 are in close contact with each other.

[0056] The resilient member mounting portion 72 at the rear end of the first connecting member 50 has a surface facing the resilient member mounting portion 74 which is a plane perpendicular to the axial direction, while the facing surface at the tip of the resilient member mounting portion 74 is a plane perpendicular to the axial direction, and is configured so that the restraining means 18 (resilient member 70) sandwiched between them can urge the first connecting member 50 parallel to the axial direction.

[0057] The diameter of the restraining means 18 (resilient member 70 ) is shorter than the diameters of the first connecting member 50 and the resilient member mounting portion 74 , and is configured not to protrude from the first connecting member 50 and the resilient member mounting portion 74 .

[0058] The first fixing groove 90 has a first groove portion 90A that opens toward the operating rod 12, a second groove portion 90B that opens subsequent to the first groove portion 90A, and a third groove portion 90C that opens subsequent to the second groove portion 90B. The first groove portion 90A extends in the longitudinal direction, the second groove portion 90B extends in the circumferential direction, and the third groove portion 90C extends in the longitudinal direction and forms a dead end. The first fixing groove 90 is formed in an L-shape when viewed in a plane, and is configured so that when the tip tool 14 is attached to the operating rod 12, the first fixing protrusion (pin) 60 stops in the third groove portion 90C and does not move. The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft portion of the fitted first fixing protrusion (pin) 60 to move.

[0059] With the above-described configuration, the second connecting member 80 presses the fixing means 16 (first fixing protrusion (pin) 60) which protrudes radially and is fixed at the second connecting portion 42 of the first connecting portion 40 connected to the operating rod main body 20 at the bottom of the third groove portion 90C toward the tip side (mounted portion) by the biasing force of the resilient member 70 and the second resilient member 76, thereby engaging the third groove portion 90C and the fixing means 16 (first fixing protrusion (pin) 60), so that the second connecting member 80 does not move in the direction of unlocking.

[0060] The first fixing protrusion (pin) 60 is provided to protrude in the radial direction of the first connecting member 50, The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft portion of the fitted first fixing protrusion (pin) 60 to move.

[0061] The first groove portion 90A extends so as to advance the fixing means 16 (first fixing protrusion (pin) 60) toward the tip side, i.e., extends in the direction in which the operating rod 12 is connected to the tip tool 14, and in this embodiment is configured as a groove parallel to the axial direction.

[0062] The second groove portion 90B has a length that enables the fixing means 16 (first fixing protrusion (pin) 60) that advances radially from the first groove portion 90A to a position where it will not return back into the first groove portion 90A, and in this embodiment, is configured with a groove that is perpendicular to the axial direction.

[0063] The first groove portion 90A, the second groove portion 90B, and the third groove portion 90C are grooves having similar widths, and each is configured as an L-shaped bent groove. The width and depth of these are configured so that they can be advanced in the direction in which the groove extends with the first fixing protrusion (pin) 60 and the second fixing protrusion (plunger) 62 fitted therein.

[0064] The third groove portion 90C extends so as to allow the fixing means 16 (first fixing protrusion (pin) 60) to advance toward the hand side, that is, extends in the opposite direction to the direction in which the operating rod 12 is connected to the tool tip 14, and forms a dead end so that the fixing means 16 (first fixing protrusion (pin) 60) that has advanced to a position where it will no longer move radially along the second groove portion 90B will not advance any further in the opposite direction to the connection direction.

[0065] The fixing means 16 (first fixing protrusion (pin) 60) is fixed to a recess that constitutes the second connecting portion 42, and the portion protruding from the outer surface of the recess that constitutes the second connecting portion 42 functions as the fixing protrusion.

[0066] The second connecting member 80 constitutes an attachment portion that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and includes a first connecting portion 82 which is an end tool attachment portion that is attached to the (tip) tool portion 30, and a second connecting portion 84 which is thicker than the first connecting portion 82 which is the end tool attachment portion. The first connecting portion 82 is fitted into an attachment portion of the (tip) tool portion 30, and is fixed to the (tip) tool portion 30 by an appropriate fastener, for example a pin or the like. The second connecting portion 84 constitutes a hollow core member attachment portion, and has a rod body side connecting portion attachment hole 94 formed therein into which the core member 44 is fitted. The second connecting portion 84 has a columnar core member mounting portion 96 provided in a rod body side connecting portion mounting hole 94 . The columnar core member mounting portion 96 is inserted into the annular hollow portion 46 between the second connecting portion 42 of the core member 44 and the (second) operating rod mounting member 28, and is connected in contact with the tip side of the (second) operating rod mounting member 28.

[0067] The (second) operating rod mounting member 28 is arranged in series with the columnar core member mounting portion 96 and is attached to the second connecting portion 42 of the core member 44. The columnar core member mounting portion 96 is configured to abut against a proximal portion of the second connecting member 80, and a second resilient member 76 is disposed in a second hollow portion 46b that exists between the proximal end of the columnar core member mounting portion 96 and the boundary wall portion of the first hollow portion 46a of the hollow portion 46. The second resilient member 76 is formed of a coil spring or the like that is formed to resiliently resilient the columnar core member mounting portion 96 toward the proximal side or the tip side.

[0068] The second resilient member 76 constituting the restraining means 18 contracts when locked, and pushes the core member attachment portion 96 and the second connecting portion 84 toward the tip side. (Types 1 to 3) The second resilient member 76 constantly presses the core member mounting portion 96 and the second connecting portion 84 toward the tip, and in the locked state is lightly contracted, and becomes further contracted when the second connecting member 80 is pulled toward the front during the release operation.

[0069] As shown in FIG. 3(B), the columnar core member attachment portion 96 is fitted into the hollow portion 46 of the second connecting portion 42, and is fixed to the (second) operating rod attachment member 28 with a retaining screw 28a.

[0070] The columnar core member mounting portion 96 has a shape that is inserted into the second hollow portion 46b formed in the hollow portion provided in the second connecting portion 42, and in this embodiment is configured in a cylindrical shape that can slide within the hollow portion. The columnar core member mounting portion 96 has a bottomed hole drilled on the proximal side into which the (second) operating rod mounting member 28 can be fitted, and is configured so that the (second) operating rod mounting member 28 can be connected to the columnar core member mounting portion 96.

[0071] The columnar core member mounting portion 96 has a shape that is inserted into the second hollow portion 46b formed in the hollow portion provided in the second connecting portion 42, and in this embodiment is configured in a cylindrical shape that can slide within the hollow portion. The columnar core member mounting portion 96 has a bottomed hole drilled on the proximal side into which the (second) operating rod mounting member 28 can be fitted, and is configured so that the (second) operating rod mounting member 28 can be connected to the columnar core member mounting portion 96.

[0072] The (second) operating rod mounting member 28 extends from the columnar core member mounting portion 96 toward the hand side, with the second resilient member 76 interposed around it, and its head protruding into the third hollow portion 46c is fixed to the first hollow portion 46a and is bridged within the second hollow portion 46b.

[0073] The first connecting member 50 and the second connecting member 80 have almost the same or similar outer shapes, and in this embodiment, they are tubular with a circular cross section, and the diameters of their outer surfaces have the same or similar dimensions. Therefore, there is almost no step at the boundary between the second connecting member 80 and the first connecting member 50, and the probability of hitting something else is extremely low.

[0074] The first connecting member 50 and the second connecting member 80 are configured so that their contacting surfaces are in close contact with each other, and the first connecting member 50 is configured to press the second connecting member 80 with a uniform force due to the biasing force of the restraining means 18 (resilient member 70).

[0075] The resilient member mounting portion 72 at the rear end of the first connecting member 50 has a surface facing the resilient member mounting portion 74 which is a plane perpendicular to the axial direction, while the opposing surface at the tip of the resilient member mounting portion 74 is a plane perpendicular to the axial direction, and is configured so that the restraining means 18 (resilient member 70) sandwiched between them can bias the first connecting member 50 with a force parallel to the axial direction.

[0076] The first connecting member 50 is arranged on the operating rod 12 so as to be movable in the axial direction of the operating rod 12, and is fixed to the area of ​​the second connecting member 80 on the operating rod 12 side to control the movement of the second connecting member 80, so that the connecting portion 24 (on the operating rod side) does not come off the first fixing groove 90 of the second connecting member 80 when a tip tool 14 is attached to the operating rod 12. The first connecting member 50 has a fixing means 16 for controlling the movement of the second connecting member 80 .

[0077] The fixing means 16 of the core member 44 has a male thread portion 48 provided on the outer periphery of the area in which the first connecting member 50 is interposed, in which the first connecting member 50 is loaded, while the fixing means 16 of the first connecting member 50 has a female thread portion 58 provided within the tube in the area in which the core member 44 is interposed. The fixing means 16 of the first connecting member 50 is screwed into the fixing means 16 of the core member 44, and by turning the first connecting member 50, it can be moved in the longitudinal direction of the operating rod 12, and can be stopped at a position suitable for pressing the second connecting member 80 by the first connecting member 50.

[0078] In this embodiment, the operating rod body 20 of the operating rod 12 is a rod body having an approximately circular cross-section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 are rod-shaped bodies having an approximately circular cross-section, the first connecting member 50 is an annular body having an approximately circular cross-section, and the second connecting member 80 is an annular body having an approximately circular cross-section. The operating rod body 20, the core member 44, the first connecting member 50 and the second connecting member 80 of the operating rod 12 are arranged in parallel with each other, with the center line extending in the axial direction of the rod body being concentric. The first connecting member 50 is arranged around the second connecting portion 42 of the core member 44, and the second connecting member 80 is arranged around the tip side of the core member 44, and the tip side edge of the first connecting member 50 and the proximal side edge of the second connecting member 80 are formed to face each other.

[0079] Next, the operation method will be described below assuming that an insulated operating rod 12 equipped with the connecting structure 10 according to the embodiment is used to operate an indirect live line tip tool 14 connected to the tip of the insulated operating rod 12 in order to form an overhead distribution line bypass circuit. First, as shown in Figures 1 and 2, in order for an operator to attach the tip tool 14 for indirect live-line work to the tip of the insulated operating rod 12, the connecting portion 24 (on the operating rod side) of the insulated operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14, which constitute the connecting structure 10, are connected. Specifically, the axis of the connecting portion 24 on the operating rod 12 side (operating rod side) is aligned with the axis of the connecting portion 32 on the tip tool 14 side (tip tool side), and the first fixing convex portion (pin) 60 is aligned with the first groove portion 90A of the first fixing groove 90. Next, the operating rod 12 is moved toward the tip tool 14, and the first fixing protrusion (pin) 60 is inserted into the second groove portion 90B of the first fixing groove 90. When it reaches the groove wall on the tip tool 14 side of the second groove portion 90B, the operating rod 12 is rotated circumferentially, and the first fixing protrusion (pin) 60 is advanced along the groove of the second groove portion 90B toward the third groove portion 90C. When the connecting structure 10 reaches the mouth of the third groove portion 90C, i.e., when it reaches the dead end of the second groove portion 90B, the operating rod 12 is pulled back from the tip tool 14 side toward the handle side, and the first fixing protrusion (pin) 60 is inserted into the third groove portion 90C. Therefore, by turning the first connecting member 50, the action of the male threaded portion 48 of the first connecting member 50 and the female threaded portion 58 of the core member 44 moves the first connecting member 50 in the longitudinal direction of the operating rod 12, moving it to a position where it presses the second connecting member 80, thereby firmly connecting the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14.

[0080] Next, the unlocking of the connecting part 24 (on the operating rod side) of the operating rod body 20 and the connecting part 32 (on the tip tool side) of the tool part (tip tool part) 30 in the connecting structure 10 will be described mainly with reference to Fig. 4. At that time, the first connecting member 50 is rotated to disengage the male thread part 48 from the female thread part 58 and move it toward the hand side. Then, the connecting portion 24 (on the operating rod side) of the operating rod main body 20 is moved toward the tip side (the first connecting member 50 is pushed toward the hand side with the second connecting member 80) to remove the first fixing convex portion (pin) 60 constituting the fixing means 16 from the third groove portion 90C, and the operating rod 12 is turned to move the first fixing convex portion (pin) 60 along the second groove portion 90B. When the first fixing convex portion (pin) 60 is positioned in the first groove portion 90A of the first fixing groove 90, the operating rod 12 is moved toward the hand side to remove the first fixing convex portion (pin) 60 from the first fixing groove 90, thereby separating the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the hand side) of the tip tool 14.

[0081] (Second embodiment)

[0082] Next, a connecting structure according to a second embodiment, which is a modified example of the first embodiment, will be described mainly with reference to FIGS. In addition, in describing the connecting structure according to the second embodiment, which is a modified example of the first embodiment, the components and elements common to the connecting structure 10 according to the first embodiment shown in Figures 1 to 9 will be denoted by the same reference numerals, and descriptions of the common components and elements will be omitted. The following description will focus on characteristic constituent elements and components of the connection structure which is a modification of the first embodiment.

[0083] The connecting structure 10, which is the second embodiment of the present invention, is a connecting structure that connects an operating rod 12 that constitutes a rod body and a connecting portion of a tool tip 14 that constitutes a connected part connected to the operating rod 12.

[0084] The operating rod 12 comprises a long, cylindrical operating rod body 20, a gripping portion 22 attached to the rear end, i.e., the front side, of the operating rod body 20, and a connecting portion 24 (on the operating rod side) formed on the tip side of the operating rod body 20, i.e., the area on the side that is attached to the tip tool 14.

[0085] The tip tool 14, such as an indirect live-line construction tool, is composed of, for example, a stripper for stripping the insulating coating of a live overhead distribution line, pliers, a fastening tool, and the like. The tip tool 14 comprises a tool portion 30 that directly contacts an electric wire or the like, and a connecting portion 32 (on the tip tool side) that constitutes a connected portion, which is formed in the area where the tool portion 30 is connected to the operating rod 12.

[0086] The connecting part 24 on the side of the operating rod 12, which is a rod body, and the connecting part 32 on the side of the connected part are arranged in parallel, concentrically about a center line extending in the axial direction of the rod body, with a convex part formed on one side and a concave part formed on the other, and are configured so that the convex part and the concave part are combined and connected. In this embodiment, a core member 44 constituting a convex portion is formed in the connecting portion 24 (on the operating rod side), and a rod side connecting portion mounting hole 94 constituting a concave portion is formed in the connecting portion 32 (on the tip tool side). The core member 44 is a rod-shaped body with an approximately circular cross-section, and the rod-side connecting part mounting hole 94 is an annular body with an approximately circular cross-section, and is aligned concentrically with a center line extending in the axial direction of the rod body. By combining the core member 44 with the rod-side connecting part mounting hole 94, the connecting part 24 on the operating rod 12 side and the connecting part 32 on the connected part side are configured to be connected.

[0087] The operating rod 12 is provided, in the area on the side connected to the tool tip 14, with a fixing means 16 which constitutes a separation prevention means for fixing the tool tip 14 and preventing the components connected by the connecting structure from separating. Furthermore, in the area of ​​the operating rod 12 that is connected to the tip tool 14, a restraining means 18 is provided that constitutes a separation prevention means for preventing the movement of the operating rod 12 and the tip tool 14 so that the connection between them is not released, and for preventing the items connected by the connecting structure from separating.

[0088] The connecting portion 24 of the operating rod 12, which constitutes the connecting portion of the rod body, is composed of a core member 44 in which a first connecting portion 40 thinner than the operating rod main body 20 is formed on the side where it is connected to the operating rod main body 20, and a second connecting portion 42 thicker than the first connecting portion 40 is connected to the tip tool 14 side of the first connecting portion 40.

[0089] The core member 44 constituting the connecting portion 24 (on the operating rod side) of the operating rod main body 20 is connected to the operating rod main body 20 by an operating rod mounting member (the (first) operating rod mounting member 26 and the fixing pins 26a and 26b).

[0090] (1) In this embodiment, the operating rod mounting member 26 and the core member 44 are fitted into a recess 20a provided on the tip side of the operating rod main body 20, as shown in Figures 12 and 13, and are fixed by fixing pins 26a and 26b. The first connecting portion 40 of the core member 44 is fitted around the (first) operating rod mounting member 26 and fitted into a recessed portion 20a provided at the tip of the operating rod body 20, and is fixed to the operating rod body 20.

[0091] In this embodiment, the connecting portion 24 (on the operating rod side) is provided with a core member 44 that constitutes the first connecting portion 40 and the second connecting portion 42. The core member 44 has a hollow cylindrical shape, and is disposed around the operating rod mounting members (the (first) operating rod mounting member 26 and the (second) operating rod mounting member 28).

[0092] In this embodiment, the core member 44 constitutes a first connecting portion 40 on the proximal side formed of a cylindrical portion thinner than the operating rod main body 20 so as to be attached to the operating rod main body 20, and a second connecting portion 42 on the tip side formed of a thick cylindrical portion thicker than the thin first connecting portion 40 on the proximal side.

[0093] The core member 44 has a hollow annular portion 46 drilled in the longitudinal direction. The hollow portion 46 has a first hollow portion 46a that is elongated and narrowed at approximately the center, and a second hollow portion 46b that is relatively thick and has a diameter longer than that of the first hollow portion 46a is formed on the tip side of the first hollow portion 46a. Furthermore, the hollow portion 46 has a third hollow portion 46c that is relatively thick and has a diameter greater than that of the first hollow portion 46a, formed on the proximal side of the first hollow portion 46a.

[0094] In the core member 44, a control rod attachment member ((first) control rod attachment member 26) for attachment to the control rod body 20 is disposed in the third hollow portion 46c of the hollow portion 46. The operating rod mounting member (the (first) operating rod mounting member 26) is fixed to the tip of the operating rod main body 20, and the third hollow portion 46c of the core member 44 is fitted around and attached to the (first) operating rod mounting member 26. (2) The operating rod mounting member 28 is inserted into the hollow portion 46, with its proximal side positioned within the third hollow portion 46c, and its tip side slidably fitted into the first hollow portion 46a, and further, the tip side extends toward the tip side through the second hollow portion 46b and is connected to the columnar core member mounting portion 96. In this embodiment, the (second) operating rod mounting member 28 is a cylindrical rod body, and has a head portion with a diameter larger than that of the first hollow portion 46a at the proximal side, and a rod-shaped body with a diameter substantially equal to that of the first hollow portion 46a at the distal end side. Therefore, the second hollow portion 46b is configured to leave a hollow portion between the (second) operating rod mounting member 28 and the (second) operating rod mounting member 28, so that the second resilient member can be fitted therein.

[0095] The connecting portion on the rod body side and the connecting portion on the connected portion side have a convex portion 62c formed on one side and a concave portion 92a formed on the other side, and are configured so that the convex portion 62c and the concave portion 92a are combined and connected.

[0096] The fixing means 16 is constituted by a first fixing protrusion (pin) 60 which is formed on the connecting portion on the rod body side and constitutes a separation prevention means, The fixing means formed on the second connecting member 80 or the fixing means formed on the core member 44 are constituted by fixing grooves formed at corresponding positions in the core member 44 and / or the second connecting member 80, which constitute a tortuous separation prevention means.

[0097] In this embodiment, a first fixing protrusion (pin) 60 constituting the fixing means 16 is attached to the core member 44 on the side of the second connecting portion 42. A resilient member 70 constituting the restraining means 18 may be interposed around the first connecting portion 40 side.

[0098] A first connecting member 50 is provided on the connecting portion 24 (on the operating rod side). In the second embodiment, the connecting portion 24 (on the operating rod side) is not provided with the resilient member 70 constituting the restraining means 18, but it may be provided on the proximal side of the core member 44. A resilient member attachment portion 72 for fixing the tip end side of the resilient member 70 is formed on the proximal side of the first connecting member 50. Furthermore, the operating rod body 20 of the operating rod 12 has a resilient member mounting portion 74 formed on the tip side on the side facing the outer surface of the hand side of the first connecting member 50 for fastening the rear end side of the resilient member 70. The resilient member 70 constituting the restraining means 18 may be configured to bias the first connecting member 50 toward the second connecting member 80 when the tool tip 14 is attached to the operating rod 12.

[0099] The connecting portion 24 (on the operating rod side) is equipped with a core member 44 fixed to the center at the tip of the operating rod body 20, and a first connecting member 50 is disposed around the core member 44. Furthermore, the connecting portion 24 (on the operating rod side) is provided with a restraining means 18 around the proximal side of the core member 44, which is configured to resiliently repel the operating rod 12 from the proximal side toward the tip tool 14 side. The first connecting portion 40 is configured to form a movement space for the first connecting member 50 described later between it and the operating rod main body 20, and the second connecting portion 42 is configured to have the first fixing protrusion (pin) 60 arranged therearound and to insert the second connecting member 80 constituting the connecting portion 32 (on the tip tool side).

[0100] The first connecting member 50 is annular, fitted around the substantially cylindrical core member 44, and configured to screw in the longitudinal direction of the core member 44 and the operating rod body 20. It is configured to be resilient toward the tip side by a resilient member 70 (not shown) interposed between the proximal side of the first connecting member 50 and the tip side of the operating rod body 20. The first fixing protrusion (pin) 60 is formed in the center of the connecting portion 24 (on the operating rod side) so as to extend in the radial direction. The first fixing convex portion (pin) 60 is formed so as to be able to move in the axial direction of the operating rod 12 as the operating rod 12 moves, relative to the tool bit 14, and is formed so as to be able to rotate in the circumferential direction of the operating rod 12.

[0101] The connecting portion 32 (on the tool tip side) constitutes a mounting portion that is attached to the operating rod 12, and a second connecting member 80 is provided that is formed so as to be able to connect the connecting portion 24 on the operating rod 12 side. The second connecting member 80 is formed, in a region on the side connected to the operating rod 12, with a first fixing groove 90 for stopping the first fixing protrusion (pin) 60 arranged on the connecting portion 24 on the operating rod 12 side. The first fixing groove 90 fits the first fixing protrusion (pin) 60 and constitutes a fixing means 16 for fixing the first fixing protrusion (pin) 60 when the connecting portion 24 (on the operating rod side) and the connecting portion 32 (on the tool tip side) are connected.

[0102] The first fixing groove 90 has a first groove portion 90A that opens toward the operating rod 12, a second groove portion 90B that opens subsequent to the first groove portion 90A, and a third groove portion 90C that opens subsequent to the second groove portion 90B. The first groove portion 90A extends in the longitudinal direction, the second groove portion 90B extends in the circumferential direction, and the third groove portion 90C extends in the longitudinal direction and forms a dead end. The first fixing groove 90 is formed in an L-shape when viewed in a plane, and is configured so that when the tip tool 14 is attached to the operating rod 12, the first fixing protrusion (pin) 60 stops in the third groove portion 90C and does not move. The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft portion of the fitted first fixing protrusion (pin) 60 to move.

[0103] With the above-described configuration, the second connecting member 80 presses the fixing means 16 (first fixing protrusion (pin) 60) which protrudes radially and is fixed at the second connecting portion 42 of the first connecting portion 40 connected to the operating rod main body 20 at the bottom of the third groove portion 90C toward the tip side (mounted portion) by the biasing force of the resilient member 70 and the second resilient member 76, thereby engaging the third groove portion 90C and the fixing means 16 (first fixing protrusion (pin) 60), so that the second connecting member 80 does not move in the direction of unlocking.

[0104] The first fixing protrusion (pin) 60 is provided to protrude in the radial direction of the first connecting member 50, The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft portion of the fitted first fixing protrusion (pin) 60 to move.

[0105] The second connecting member 80 constitutes an attachment portion that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and includes a first connecting portion 82 which is an end tool attachment portion that is attached to the (tip) tool portion 30, and a second connecting portion 84 which is thicker than the first connecting portion 82 which is the end tool attachment portion. The first connecting portion 82 is fitted into an attachment portion of the (tip) tool portion 30, and is fixed to the (tip) tool portion 30 by an appropriate fastener, for example a pin or the like. The second connecting portion 84 constitutes a hollow core member attachment portion, and has a rod body side connecting portion attachment hole 94 formed therein into which the core member 44 is fitted. The second connecting portion 84 has a columnar core member mounting portion 96 provided in a rod body side connecting portion mounting hole 94 . The columnar core member mounting portion 96 is inserted into the annular hollow portion 46 between the second connecting portion 42 of the core member 44 and the (second) operating rod mounting member 28, and is connected in contact with the tip side of the (second) operating rod mounting member 28.

[0106] The (second) operating rod mounting member 28 is arranged in series with the columnar core member mounting portion 96 and is attached to the second connecting portion 42 of the core member 44. The columnar core member mounting portion 96 is configured to abut against the proximal portion of the second connecting member 80, and a second resilient member 76 such as a coil spring is disposed in a second hollow portion 46b that exists between the proximal end of the columnar core member mounting portion 96 and the boundary wall portion of the first hollow portion 46a of the hollow portion 46. The second resilient member 76 is configured to resilient the columnar core member mounting portion 96 toward the proximal side or the tip side. This second resilient member 76 may be omitted.

[0107] As shown in FIG. 10, the columnar core member attachment portion 96 is fitted into the hollow portion 46 of the second connecting portion 42, and is fixed to the (second) operating rod attachment member 28 with a retaining screw 28a.

[0108] Furthermore, the columnar core member mounting portion 96 has a third resilient member 98, such as a coil spring, disposed in a recess formed in the rod body side connecting portion mounting hole 94 of the second connecting member 80 at its tip side so as to resiliently resilient the third resilient member 98 from the tip tool 14 side toward the operating rod 12 side. The third resilient member 98 may be fixed to the tip side of the columnar core member mounting portion 96, or may be fixed by being inserted into a recess 32a formed in the center of the connecting portion 32 (on the tool tip side).

[0109] The third resilient member 98 constituting the restraining means 18 pushes the second connecting member 80 toward the tip side when locked. (Type 2)

[0110] The first connecting member 50 is arranged on the operating rod 12 so as to be movable in the axial direction of the operating rod 12, and is fixed to the area of ​​the second connecting member 80 on the operating rod 12 side to control the movement of the second connecting member 80, so that the connecting portion 24 (on the operating rod side) does not come off the first fixing groove 90 of the second connecting member 80 when a tip tool 14 is attached to the operating rod 12. The first connecting member 50 has a fixing means 16 for controlling the movement of the second connecting member 80 .

[0111] The fixing means 16 of the core member 44 is constituted by a male thread portion 48 provided on the outer periphery of the area in which the first connecting member 50 is interposed, in which the first connecting member 50 is loaded, while the fixing means 16 of the first connecting member 50 is constituted by a female thread portion 58 provided within the tube in the area in which the core member 44 is interposed. The female threaded portion 58 constituting the fixing means 16 of the first connecting member 50 is screwed into the male threaded portion 48 constituting the fixing means 16 of the core member 44, and by turning the first connecting member 50, it can be moved in the longitudinal direction of the operating rod 12, and can be stopped at a position suitable for pressing the second connecting member 80 by the first connecting member 50.

[0112] In this embodiment, the operating rod body 20 of the operating rod 12 is a rod body having an approximately circular cross-section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 are rod-shaped bodies having an approximately circular cross-section, the first connecting member 50 is an annular body having an approximately circular cross-section, and the second connecting member 80 is an annular body having an approximately circular cross-section. The operating rod body 20, the core member 44, the first connecting member 50 and the second connecting member 80 of the operating rod 12 are arranged in parallel with each other, with the center line extending in the axial direction of the rod body being concentric. The first connecting member 50 is arranged around the second connecting portion 42 of the core member 44, and the second connecting member 80 is arranged around the tip side of the core member 44, and the tip side edge of the first connecting member 50 and the proximal side edge of the second connecting member 80 are formed to face each other.

[0113] Next, the operation method will be described below assuming that an insulated operating rod 12 equipped with the connecting structure 10 according to the embodiment is used to operate an indirect live line tip tool 14 connected to the tip of the insulated operating rod 12 in order to form an overhead distribution line bypass circuit. First, as shown in Figures 10 and 11, in order for an operator to attach the tip tool 14 for indirect live-line work to the tip of the insulated operating rod 12, the connecting portion 24 (on the operating rod side) of the insulated operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14, which constitute the connecting structure 10, are connected. Specifically, the axis of the connecting portion 24 on the operating rod 12 side (operating rod side) is aligned with the axis of the connecting portion 32 on the tip tool 14 side (tip tool side), and the first fixing convex portion (pin) 60 is aligned with the first groove portion 90A of the first fixing groove 90. Next, the operating rod 12 is moved toward the tip tool 14, and the first fixing protrusion (pin) 60 is inserted into the second groove portion 90B of the first fixing groove 90. When it reaches the groove wall on the tip tool 14 side of the second groove portion 90B, the operating rod 12 is rotated circumferentially, and the first fixing protrusion (pin) 60 is advanced along the groove of the second groove portion 90B toward the third groove portion 90C. When the connecting structure 10 reaches the mouth of the third groove portion 90C, i.e., when it reaches the dead end of the second groove portion 90B, the operating rod 12 is pulled back from the tip tool 14 side toward the handle side, and the first fixing protrusion (pin) 60 is inserted into the third groove portion 90C. Therefore, by turning the first connecting member 50, the action of the male threaded portion 48 of the first connecting member 50 and the female threaded portion 58 of the core member 44 moves the first connecting member 50 in the longitudinal direction of the operating rod 12, moving it to a position where it presses the second connecting member 80, thereby firmly connecting the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14.

[0114] Next, the unlocking of the connecting part 24 (on the operating rod side) of the operating rod body 20 and the connecting part 32 (on the tip tool side) of the tool part (tip tool part) 30 in the connecting structure 10 will be described mainly with reference to Fig. 11. At that time, the first connecting member 50 is rotated to disengage the male thread part 48 from the female thread part 58 and move it toward the hand side. Then, by moving the connecting portion 24 (on the operating rod side) of the operating rod main body 20 toward the tip side (pushing the first connecting member 50 toward the hand side with the second connecting member 80), the first fixing convex portion (pin) 60 constituting the fixing means 16 is removed from the third groove portion 90C, and the operating rod 12 is turned to move the first fixing convex portion (pin) 60 along the second groove portion 90B. When it is positioned in the first groove portion 90A of the first fixing groove 90, the operating rod 12 is moved toward the hand side to remove the first fixing convex portion (pin) 60 from the first fixing groove 90, whereby the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the hand side) of the tip tool 14 can be separated.

[0115] (Third embodiment)

[0116] Next, a connecting structure according to a third embodiment, which is a modification of the first embodiment, will be described mainly with reference to FIGS. In addition, in describing the connecting structure which is the third embodiment, which is a modified example of the first embodiment, the components and elements common to the connecting structure 10 which is the first embodiment shown in Figures 1 to 9 will be given the same symbols, and descriptions of the common components and elements will be omitted. The following description will focus on characteristic constituent elements and components of the connection structure which is a modification of the first embodiment.

[0117] The connecting structure 10, which is the third embodiment of the present invention, is a connecting structure that connects an operating rod 12 that constitutes a rod body and a connecting portion of a tool tip 14 that constitutes a connected part connected to the operating rod 12.

[0118] The operating rod 12 comprises a long, cylindrical operating rod body 20, a gripping portion 22 attached to the rear end, i.e., the front side, of the operating rod body 20, and a connecting portion 24 (on the operating rod side) formed on the tip side of the operating rod body 20, i.e., the area on the side that is attached to the tip tool 14.

[0119] The tip tool 14, such as an indirect live-line construction tool, is composed of, for example, a stripper for stripping the insulating coating of a live overhead distribution line, pliers, a fastening tool, and the like. The tip tool 14 comprises a tool portion 30 that directly contacts an electric wire or the like, and a connecting portion 32 (on the tip tool side) that constitutes a connected portion, which is formed in the area where the tool portion 30 is connected to the operating rod 12.

[0120] The connecting part 24 on the side of the operating rod 12, which is a rod body, and the connecting part 32 on the side of the connected part are arranged in parallel, concentrically about a center line extending in the axial direction of the rod body, with a convex part formed on one side and a concave part formed on the other, and are configured so that the convex part and the concave part are combined and connected. In this embodiment, a core member 44 constituting a convex portion is formed in the connecting portion 24 (on the operating rod side), and a rod side connecting portion mounting hole 94 constituting a concave portion is formed in the connecting portion 32 (on the tip tool side). The core member 44 is a rod-shaped body with an approximately circular cross-section, and the rod-side connecting part mounting hole 94 is an annular body with an approximately circular cross-section, and is aligned concentrically with a center line extending in the axial direction of the rod body. By combining the core member 44 with the rod-side connecting part mounting hole 94, the connecting part 24 on the operating rod 12 side and the connecting part 32 on the connected part side are configured to be connected.

[0121] The operating rod 12 is provided, in the area on the side connected to the tool tip 14, with a fixing means 16 which constitutes a separation prevention means for fixing the tool tip 14 and preventing the components connected by the connecting structure from separating. Furthermore, in the area of ​​the operating rod 12 that is connected to the tip tool 14, a restraining means 18 is provided that constitutes a separation prevention means for preventing the movement of the operating rod 12 and the tip tool 14 so that the connection between them is not released, and for preventing the items connected by the connecting structure from separating.

[0122] The connecting portion 24 of the operating rod 12, which constitutes the connecting portion of the rod body, is composed of a core member 44 in which a first connecting portion 40 thinner than the operating rod main body 20 is formed on the side where it is connected to the operating rod main body 20, and a second connecting portion 42 thicker than the first connecting portion 40 is connected to the tip tool 14 side of the first connecting portion 40.

[0123] The core member 44 constituting the connecting portion 24 (on the operating rod side) of the operating rod main body 20 is connected to the operating rod main body 20 by an operating rod mounting member (the (first) operating rod mounting member 26 and the fixing pins 26a and 26b).

[0124] (1) In this embodiment, the operating rod mounting member 26 and the core member 44 are fitted into a recess 20a provided on the tip side of the operating rod main body 20, as shown in Figures 17 and 18, and are fixed by fixing pins 26a and 26b. The first connecting portion 40 of the core member 44 is fitted around the (first) operating rod mounting member 26 and fitted into a recessed portion 20a provided at the tip of the operating rod body 20, and is fixed to the operating rod body 20.

[0125] In this embodiment, the connecting portion 24 (on the operating rod side) is provided with a core member 44 that constitutes the first connecting portion 40 and the second connecting portion 42. The core member 44 has a hollow cylindrical shape, and is disposed around the operating rod mounting members (the (first) operating rod mounting member 26 and the (second) operating rod mounting member 28).

[0126] In this embodiment, the core member 44 constitutes a first connecting portion 40 on the proximal side formed of a cylindrical portion thinner than the operating rod main body 20 so as to be attached to the operating rod main body 20, and a second connecting portion 42 on the tip side formed of a thick cylindrical portion thicker than the thin first connecting portion 40 on the proximal side.

[0127] The core member 44 has a hollow annular portion 46 drilled in the longitudinal direction. The hollow portion 46 has a first hollow portion 46a that is elongated and narrowed at approximately the center, and a second hollow portion 46b that is relatively thick and has a diameter longer than that of the first hollow portion 46a is formed on the tip side of the first hollow portion 46a. Furthermore, the hollow portion 46 has a third hollow portion 46c that is relatively thick and has a diameter greater than that of the first hollow portion 46a, formed on the proximal side of the first hollow portion 46a.

[0128] In the core member 44, a control rod attachment member ((first) control rod attachment member 26) for attachment to the control rod body 20 is disposed in the third hollow portion 46c of the hollow portion 46. The operating rod mounting member (the (first) operating rod mounting member 26) is fixed to the tip of the operating rod main body 20, and the third hollow portion 46c of the core member 44 is fitted around and attached to the (first) operating rod mounting member 26. (2) The operating rod mounting member 28 is inserted into the hollow portion 46, with its proximal side positioned within the third hollow portion 46c, and its tip side slidably fitted into the first hollow portion 46a, and further, the tip side extends toward the tip side through the second hollow portion 46b and is connected to the columnar core member mounting portion 96. In this embodiment, the (second) operating rod mounting member 28 is a cylindrical rod body, and has a head portion with a diameter larger than that of the first hollow portion 46a at the proximal side, and a rod-shaped body with a diameter substantially equal to that of the first hollow portion 46a at the distal end side. Therefore, the second hollow portion 46b is configured to leave a hollow portion between the (second) operating rod mounting member 28 and the (second) operating rod mounting member 28, so that the third resilient member 98 can be fitted therein.

[0129] In this embodiment, a first fixing protrusion (pin) 60 constituting the fixing means 16 is attached to the core member 44 on the side of the second connecting portion 42. A resilient member 70 constituting the restraining means 18 may be interposed around the first connecting portion 40 side.

[0130] The connecting portion 24 (on the operating rod side) is equipped with a core member 44 fixed to the center at the tip of the operating rod body 20, and a first connecting member 50 is disposed around the core member 44. Furthermore, the core member 44 does not have a restraining means 18 arranged around it on the proximal side, which is composed of a resilient member 70 such as a coil spring that is formed so as to resiliently repel the operating rod 12 from the proximal side toward the tip tool 14 side, but may have such a restraining means 18 arranged on the proximal side of the core member 44.

[0131] In the connecting portion 24 (on the operating rod side), a third connecting member 52 is disposed on the first connecting portion 40 side inside the hollow portion of the first connecting member 50 . The first connecting member 50 is an annular body with a circular cross section, and its tip side is fitted into the proximal side of the second connecting member 80 inside the hollow portion.

[0132] The third connecting member 52 is a circular ring-shaped body with a circular cross-section, is fixed to the inner surface of the first connecting member 50, and is fitted into the second connecting portion 42 of the first connecting portion 40 so as to abut the proximal tip of the second connecting portion 84 of the second connecting member 80. The third connecting member 52 is a ring-shaped body formed to be fitted into the second connecting portion 42 of the core member 44 and fitted into the inner circumferential surface on the hollow portion side of the first connecting member 50. The third connecting member 52 is configured so that its tip side contacts the proximal edge of the second connecting portion 84 of the second connecting member 80 and also contacts the proximal edge of the inner circumferential surface on the hollow portion side of the first connecting member 50, and is interposed between the proximal edge of the second connecting portion 84 of the second connecting member 80 and the proximal edge of the inner circumferential surface on the hollow portion side of the first connecting member 50.

[0133] The fixing means 16 of the first connecting member 50 and the second connecting member 80 is constituted by a male thread portion 88 provided on the outer periphery of the second connecting member 80 in the area where the first connecting member 50 is interposed, in which the first connecting member 50 is loaded, while the fixing means 16 of the first connecting member 50 is constituted by a female thread portion 58 provided within the tube in the area where the second connecting member 80 is interposed. The female thread portion 58 constituting the fixing means 16 of the first connecting member 50 is screwed into the male thread portion 88 constituting the fixing means 16 of the second connecting member 80, and by turning the first connecting member 50, it can be moved in the longitudinal direction of the operating rod 12, and can be stopped at a position suitable for pressing the second connecting member 80 by the third connecting member 52 connected to the first connecting member 50.

[0134] The connecting portion 24 (on the operating rod side) is not provided with the resilient member 70 constituting the restraining means 18, but may be disposed on the proximal side of the core member 44. In this third embodiment, the second connecting portion 42 of the first connecting portion 40 has a resilient member mounting portion 72 formed on the proximal side of the area into which the first connecting member 50 is inserted for securing the tip end of the resilient member 70 (not shown). Furthermore, the operating rod body 20 of the operating rod 12 has a resilient member mounting portion 74 formed on the tip side on the side facing the outer surface of the hand side of the first connecting member 50 for securing the rear end side of the resilient member 70 (not shown).

[0135] The first connecting portion 40 is configured to form a movement space for the first connecting member 50 described later between it and the operating rod main body 20, and the second connecting portion 42 is configured to have the first fixing protrusion (pin) 60 arranged therearound and to insert the second connecting member 80 constituting the connecting portion 32 (on the tip tool side).

[0136] The first connecting member 50 is annular, fitted around the substantially cylindrical core member 44, and configured to slide in the longitudinal direction of the core member 44 and the operating rod body 20. It may be configured to be resilient toward the tip side by a resilient member 70 (not shown) interposed between the proximal side of the first connecting member 50 and the tip side of the operating rod body 20. The first fixing protrusion (pin) 60 is formed in the center of the connecting portion 24 (on the operating rod side) so as to extend in the radial direction. The first fixing convex portion (pin) 60 is formed so as to be able to move in the axial direction of the operating rod 12 as the operating rod 12 moves, relative to the tool bit 14, and is formed so as to be able to rotate in the circumferential direction of the operating rod 12.

[0137] The connecting portion 32 (on the tool tip side) constitutes a mounting portion that is attached to the operating rod 12, and a second connecting member 80 is provided that is formed so as to be able to connect the connecting portion 24 on the operating rod 12 side. The second connecting member 80 is formed, in a region on the side connected to the operating rod 12, with a first fixing groove 90 for stopping the first fixing protrusion (pin) 60 arranged on the connecting portion 24 on the operating rod 12 side. The first fixing groove 90 fits the first fixing protrusion (pin) 60 and constitutes a fixing means 16 for fixing the first fixing protrusion (pin) 60 when the connecting portion 24 (on the operating rod side) and the connecting portion 32 (on the tool tip side) are connected.

[0138] The first fixing groove 90 has a first groove portion 90A that opens toward the operating rod 12, a second groove portion 90B that opens subsequent to the first groove portion 90A, and a third groove portion 90C that opens subsequent to the second groove portion 90B. The first groove portion 90A extends in the longitudinal direction, the second groove portion 90B extends in the circumferential direction, and the third groove portion 90C extends in the longitudinal direction and forms a dead end. The first fixing groove 90 is formed in an L-shape when viewed in a plane, and is configured so that when the tip tool 14 is attached to the operating rod 12, the first fixing protrusion (pin) 60 stops in the third groove portion 90C and does not move. The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft portion of the fitted first fixing protrusion (pin) 60 to move.

[0139] The first fixing protrusion (pin) 60 is provided to protrude in the radial direction of the first connecting member 50, The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft portion of the fitted first fixing protrusion (pin) 60 to move.

[0140] The second connecting member 80 constitutes an attachment portion that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and includes a first connecting portion 82 which is an end tool attachment portion that is attached to the (tip) tool portion 30, and a second connecting portion 84 which is thicker than the first connecting portion 82 which is the end tool attachment portion. The first connecting portion 82 is fitted into an attachment portion of the (tip) tool portion 30, and is fixed to the (tip) tool portion 30 by an appropriate fastener, for example a pin or the like. The second connecting portion 84 constitutes a hollow core member attachment portion, and has a rod body side connecting portion attachment hole 94 formed therein into which the core member 44 is fitted. The second connecting portion 84 has a columnar core member mounting portion 96 provided in a rod body side connecting portion mounting hole 94 . The columnar core member mounting portion 96 is inserted into the annular hollow portion 46 between the second connecting portion 42 of the core member 44 and the (second) operating rod mounting member 28, and is connected in contact with the tip side of the (second) operating rod mounting member 28.

[0141] The (second) operating rod mounting member 28 is arranged in series with the columnar core member mounting portion 96 and is attached to the second connecting portion 42 of the core member 44. The columnar core member mounting portion 96 is configured to abut against the proximal portion of the second connecting member 80, and a second resilient member 76 such as a coil spring is disposed in a second hollow portion 46b that exists between the proximal end of the columnar core member mounting portion 96 and the boundary wall portion of the first hollow portion 46a of the hollow portion 46. The second resilient member 76 is configured to resilient the columnar core member mounting portion 96 toward the proximal side or the tip side.

[0142] As shown in Figs. 16 and 17, the columnar core member attachment portion 96 is fitted into the hollow portion 46 of the second connecting portion 42, and is fixed to the (second) operating rod attachment member 28 with a retaining screw 28a.

[0143] The first connecting member 50 is arranged on the operating rod 12 so as to be movable in the axial direction of the operating rod 12, and is fixed to the area of ​​the second connecting member 80 on the operating rod 12 side to control the movement of the second connecting member 80, so that the connecting portion 24 (on the operating rod side) does not come off the first fixing groove 90 of the second connecting member 80 when a tip tool 14 is attached to the operating rod 12. The first connecting member 50 has a fixing means 16 for controlling the movement of the second connecting member 80 .

[0144] The first connecting member 50 is configured to cover the first fixing convex portion (pin) 60 that constitutes the fixing means 16 when the tip tool 14 is attached to the operating rod 12, and is configured to contain the second connecting portion 84 of the second connecting member 80 and the third connecting member 52 within its hollow portion.

[0145] The first connecting member 50 and the second connecting portion 84 of the second connecting member 80 are configured to screw in the axial direction by the male thread portion 88 and the female thread portion 58 that constitute the fixing means 16 when the first connecting member 50 is rotated. In this embodiment, the first connecting member 50 has a female thread portion 58 formed on the inside of the area of ​​the first connecting member 50 that overlaps with the second connecting portion 84 of the second connecting member 80, and the second connecting member 80 has a male thread portion 88 formed on the outside of the area of ​​the second connecting portion 84 that is covered by the first connecting member 50.

[0146] In this embodiment, the operating rod body 20 of the operating rod 12 is a rod body having an approximately circular cross-section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 are rod-shaped bodies having an approximately circular cross-section, the first connecting member 50 is an annular body having an approximately circular cross-section, the third connecting member 52 is an annular body having an approximately circular cross-section, and the second connecting member 80 is an annular body having an approximately circular cross-section. The operating rod body 20, core member 44, first connecting member 50, third connecting member 52 and second connecting member 80 of the operating rod 12 are arranged in parallel with each other, with the center line extending in the axial direction of the rod body being concentric. The third connecting member 52 is arranged around the second connecting portion 42 of the core member 44, the first connecting member 50 is arranged around the third connecting member 52 and the second connecting portion 84 of the second connecting member 80, and the second connecting member 80 is arranged around the tip side of the core member 44, and the tip side edge of the third connecting member 52 and the proximal side edge of the second connecting member 80 are formed to face each other.

[0147] Next, the operation method will be described below assuming that an insulated operating rod 12 equipped with the connecting structure 10 according to the embodiment is used to operate an indirect live line tip tool 14 connected to the tip of the insulated operating rod 12 in order to form an overhead distribution line bypass circuit. First, as shown in Figures 16 and 17, in order for an operator to attach the tip tool 14 for indirect live-line work to the tip of the insulated operating rod 12, the connecting portion 24 (on the operating rod side) of the insulated operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14, which constitute the connecting structure 10, are connected. Specifically, the axis of the connecting portion 24 on the operating rod 12 side (operating rod side) is aligned with the axis of the connecting portion 32 on the tip tool 14 side (tip tool side), and the first fixing convex portion (pin) 60 is aligned with the first groove portion 90A of the first fixing groove 90. Next, the operating rod 12 is moved toward the tip tool 14, and the first fixing protrusion (pin) 60 is inserted into the second groove portion 90B of the first fixing groove 90. When it reaches the groove wall on the tip tool 14 side of the second groove portion 90B, the operating rod 12 is rotated circumferentially, and the first fixing protrusion (pin) 60 is advanced along the groove of the second groove portion 90B toward the third groove portion 90C. When the connecting structure 10 reaches the mouth of the third groove portion 90C, i.e., when it reaches the dead end of the second groove portion 90B, the operating rod 12 is pulled back from the tip tool 14 side toward the handle side, and the first fixing protrusion (pin) 60 is inserted into the third groove portion 90C. Therefore, by turning the first connecting member 50, the action of the female threaded portion 58 of the first connecting member 50 and the male threaded portion 88 of the second connecting member 80 moves the first connecting member 50 in the longitudinal direction of the operating rod 12, and moves it to a position where the second connecting member 80 is pressed by the third connecting member 52, thereby firmly connecting the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14.

[0148] Next, the case where the lock between the connecting part 24 (on the operating rod side) of the operating rod main body 20 and the connecting part 32 (on the tip tool side) of the tool part (tip tool part) 30 in the connecting structure 10 is released will be described mainly with reference to Fig. 17. At that time, the first connecting member 50 is rotated and moved toward the hand side, the connecting part 24 (on the operating rod side) of the operating rod main body 20 is moved toward the tip side to remove the first fixing convex part (pin) 60 constituting the fixing means 16 from the third groove part 90C, the operating rod 12 is rotated to move the first fixing convex part (pin) 60 along the second groove part 90B, and when it is positioned in the first fixing groove 90, the operating rod 12 is moved toward the hand side to remove the first fixing convex part (pin) 60 from the first fixing groove 90, whereby the connecting part 24 (on the operating rod side) of the operating rod 12 and the connecting part 32 (on the tip tool side) of the tip tool 14 can be separated.

[0149] (Fourth embodiment)

[0150] Next, a connecting structure according to a fourth embodiment will be described mainly with reference to FIGS. In addition, the same reference numerals are used to denote the components and elements common to the connecting structure 10 according to the first embodiment shown in FIGS. 1 to 9, and the description of the common components and elements will be omitted. The following mainly describes characteristic components and elements of the connection structure of the fourth embodiment.

[0151] The connecting structure 10, which is a fourth embodiment of the present invention, is a connecting structure that connects an operating rod 12 that constitutes a rod body and a connecting portion of a tool tip 14 that constitutes a connected part connected to the operating rod 12.

[0152] The operating rod 12 comprises a long, cylindrical operating rod body 20, a gripping portion 22 attached to the rear end, i.e., the front side, of the operating rod body 20, and a connecting portion 24 (on the operating rod side) formed on the tip side of the operating rod body 20, i.e., the area on the side that is attached to the tip tool 14.

[0153] The tip tool 14, such as an indirect live-line construction tool, is composed of, for example, a stripper for stripping the insulating coating of a live overhead distribution line, pliers, a fastening tool, and the like. The tip tool 14 comprises a tool portion 30 that directly contacts an electric wire or the like, and a connecting portion 32 (on the tip tool side) that constitutes a connected portion, which is formed in the area where the tool portion 30 is connected to the operating rod 12.

[0154] The connecting part 24 on the side of the operating rod 12, which is a rod body, and the connecting part 32 on the side of the connected part are arranged in parallel, concentrically about a center line extending in the axial direction of the rod body, with a convex part formed on one side and a concave part formed on the other, and are configured so that the convex part and the concave part are combined and connected. In this embodiment, the connecting portion 24 is formed with a core member 44 constituting a convex portion, and the connecting portion 32 is formed with a rod body side connecting portion attachment hole 94 constituting a concave portion. The core member 44 is a rod-shaped body with an approximately circular cross-section, and the rod-side connecting part mounting hole 94 is an annular body with an approximately circular cross-section, and is aligned concentrically with a center line extending in the axial direction of the rod body. By combining the core member 44 with the rod-side connecting part mounting hole 94, the connecting part 24 on the operating rod 12 side and the connecting part 32 on the connected part side are configured to be connected.

[0155] The operating rod 12 is provided, in the area on the side connected to the tool tip 14, with a fixing means 16 which constitutes a separation prevention means for fixing the tool tip 14 and preventing the components connected by the connecting structure from separating. Furthermore, in the area of ​​the operating rod 12 that is connected to the tip tool 14, a restraining means 18 is provided that constitutes a separation prevention means for preventing the movement of the operating rod 12 and the tip tool 14 so that the connection between them is not released, and for preventing the items connected by the connecting structure from separating.

[0156] The connecting portion 24 of the operating rod 12, which constitutes the connecting portion of the rod body, is composed of a core member 44 in which a first connecting portion 40 thinner than the operating rod main body 20 is formed on the side where it is connected to the operating rod main body 20, and a second connecting portion 42 thicker than the first connecting portion 40 is connected to the tip tool 14 side of the first connecting portion 40.

[0157] The core member 44 constituting the connecting portion 24 (on the operating rod side) of the operating rod main body 20 is connected to the operating rod main body 20 by an operating rod mounting member (the (first) operating rod mounting member 26 and the fixing pins 26a and 26b). (1) The operating rod mounting member 26 is a bottomed circular ring-shaped body that is fitted into the recessed portion 20a of the operating rod main body 20 and is configured to be directly connected by appropriate fixing means, for example, fixing pins 26a and 26b.

[0158] The connecting portion 24 (on the operating rod side) is provided with a core member 44 that constitutes the first connecting portion 40 and the second connecting portion 42. The core member 44 is fitted into a mounting hole 26d drilled in the center of the operating rod mounting member ((first) operating rod mounting member 26), and is connected by the connecting screw 26c. In this embodiment, the (first) operating rod mounting member 26 is connected to the (first) operating rod mounting member 26 by inserting a connecting screw 26c for connecting the (first) operating rod mounting member 26 to the core member 44 from its proximal side, and screwing it to the proximal side of the core member 44 with the connecting screw 26c. The core member 44 is attached to the operating rod body 20 via a (first) operating rod mounting member 26 .

[0159] A resilient member 70 constituting the restraining means 18 is disposed on the connecting portion 24 (on the operating rod side). In this embodiment, the core member 44 has a restraining means 18 arranged around its first connecting portion 40, which is composed of a resilient member 70 such as a coil spring that is formed so as to resiliently repel from the proximal side of the operating rod 12 toward the tip tool 14.

[0160] In this embodiment, the core member 44 constitutes a first connecting portion 40 on the proximal side formed of a cylindrical portion thinner than the operating rod main body 20 so as to be attached to the operating rod main body 20, and a second connecting portion 42 on the tip side formed of a thick cylindrical portion thicker than the thin first connecting portion 40 on the proximal side. In this embodiment, as shown in FIG. 28, a core member 44 has a first connecting portion 40 and a second connecting portion 42 formed as separate members, which are appropriately connected by a pin 44a.

[0161] The core member 44 has a first fixing protrusion (pin) 60 that constitutes the fixing means 16 attached to the second connecting portion 42 on the tip side, and a resilient member 70 that constitutes the restraining means 18 is interposed around the first connecting portion 40 on the proximal side. Furthermore, in this embodiment, the core member 44 is formed with a second fixing groove 92 for guiding and fixing a second fixing protrusion (plunger) 62 described later in the second connecting portion 42 in the longitudinal and radial directions of the operating rod 12.

[0162] A first connecting member 50 is provided on the connecting portion 24 (on the operating rod side). The first connecting member 50 is an annular body with a circular cross section, and its tip side is fitted into the second connecting portion 42 of the first connecting portion 40 inside the hollow portion. In this embodiment, the connecting portion 24 (on the operating rod side) has a core member 44 fixed to the center at the tip of the operating rod main body 20, and a first connecting member 50 is arranged around the core member 44.

[0163] The first connecting portion 40 has a resilient member attachment portion 72 for fixing the tip end side of the resilient member 70 formed on the proximal side of the region into which the first connecting member 50 is fitted. Furthermore, the operating rod body 20 of the operating rod 12 has a resilient member mounting portion 74 formed on the tip side on the side facing the outer surface of the hand side of the first connecting member 50 for fastening the rear end side of the resilient member 70. The first connecting member 50 is installed across between the resilient member mounting portion 72 and the resilient member mounting portion 74 so as to surround the resilient member 70 interposed in the core member 44 of the first connecting portion 40, and its tip side is attached to the second connecting portion 42 so as to surround the outer peripheral surface of the second connecting portion 42.

[0164] The resilient member 70 constituting the restraining means 18 is configured to urge the first connecting member 50 toward the second connecting member 80 side of the second connecting portion 42 constituting the connected portion via the resilient member mounting portion 72 when the tip tool 14 is attached to the operating rod 12.

[0165] The connecting portion on the rod body side and the connecting portion on the connected portion side are configured so that a first fixing convex portion 60 serving as fixing means 16 constituting a convex portion is formed on one side, and a first fixing groove 90 serving as fixing means 16 constituting a concave portion is formed on the other side, and the convex portion and the concave portion are combined to connect.

[0166] The fixing means 16 is constituted by a first fixing protrusion (pin) 60 which is formed on the connecting portion on the rod body side and constitutes a separation prevention means, and / or The fixing means 16 is constituted by a second fixing protrusion (plunger) 62 which constitutes a separation prevention means and is formed on the first connecting member 50 on the rod body side. The fixing means formed on the second connecting member 80 or the fixing means formed on the core member 44 is constituted by a first fixing groove 90 which is a fixing groove constituting a tortuous separation prevention means formed at a corresponding position on the core member 44 and / or the second connecting member 80.

[0167] The first connecting portion 40 of the core member 44 is configured to form a movement space between itself and the operating rod body 20 for a first connecting member 50, which will be described later. The second connecting portion 42 of the core member 44 has the first fixing protrusion (pin) 60 disposed on the tip side. Furthermore, the second connecting portion 42 of the core member 44 is formed with a second fixing groove 92 for guiding a second fixing protrusion (plunger) 62, which will be described later.

[0168] The first fixing protrusion (pin) 60 is formed so as to extend radially in the second connecting portion 42 of the connecting portion 24 (on the operating rod side). The first fixed convex portion (pin) 60 is formed so as to be able to move in the axial direction of the operating rod 12 as the operating rod 12 moves, relative to the tip tool 14, and so as to be able to rotate in the circumferential direction of the operating rod 12 as the operating rod 12 rotates.

[0169] The second fixing groove 92 has a first groove portion 92A that opens toward the operating rod 12, a second groove portion 92B that opens subsequent to the first groove portion 92A, and a third groove portion 92C that opens subsequent to the second groove portion 92B. The first groove portion 92A extends in the longitudinal direction, the second groove portion 92B extends in the circumferential direction, and the third groove portion 92C extends in the longitudinal direction and forms a dead end. The second fixing groove 92 is formed in an L-shape when viewed in a plane, and when the tip tool 14 is attached to the operating rod 12, when the first connecting member 50 is turned, the second fixing convex portion (plunger) 62 abuts against the third groove portion 92C, so that the first connecting member 50 does not move. The second fixing groove 92 has a depth that allows the head of the fitted second fixing convex portion (plunger) 62 to protrude slightly, and a width that allows the shaft portion of the fitted second fixing convex portion (plunger) 62 to move.

[0170] As shown in Figure 24, the second fixed convex portion (plunger) 62 comprises a cylindrical main body 62a, a biasing body 62b such as a spring loaded inside the cylindrical main body 62a, and a ball-shaped convex portion 62c whose head protrudes from the lower end of the cylindrical main body 62a by the biasing body 62b. The second fixing protrusion (plunger) 62 is provided to protrude in the radial direction of the first connecting member 50, and the second fixing groove 92 is provided with a recess 92a having a depth in which the protrusion 62c of the second fixing protrusion (plunger) 62 fits slightly, and a planar movement path 92b having a width in which the cylindrical main body 62a and the protrusion 62c of the second fixing protrusion (plunger) 62 can move. The second fixing protrusion (plunger) 62 moves along the movement path 92b in the groove of the second fixing groove 92 and fits into the concave recess 92a, thereby controlling the movement of the first connecting member 50. As shown in FIG. 24, the second fixing groove 92 has recesses 92a provided in the second groove portion 92B and the third groove portion 92C.

[0171] The first connecting member 50 is annular and fitted around the approximately cylindrical core member 44. It is configured to be freely movable in the longitudinal direction of the core member 44 and the operating rod main body 20, and is configured to be resilient toward the tip side by a resilient member 70 interposed between the proximal side of the first connecting member 50 and the tip side of the operating rod main body 20. The first connecting member 50 has a hole 50a drilled at the tip side for fixing a second fixing protrusion (plunger) 62, and the second fixing protrusion (plunger) 62 that constitutes the fixing means 16 is fitted and fixed into the hole 50a.

[0172] The connecting portion 32 (on the tool tip side) constitutes a mounting portion that is attached to the operating rod 12, and a second connecting member 80 is provided that is formed so as to be able to connect the connecting portion 24 on the operating rod 12 side. The second connecting member 80 is formed, in a region on the side connected to the operating rod 12, with a first fixing groove 90 for stopping the first fixing protrusion (pin) 60 arranged on the connecting portion 24 on the operating rod 12 side. The first fixing groove 90 fits the first fixing protrusion (pin) 60 and constitutes a fixing means 16 for fixing the first fixing protrusion (pin) 60 when the connecting portion 24 (on the operating rod side) and the connecting portion 32 (on the tool tip side) are connected.

[0173] The first fixing groove 90 has a first groove portion 90A that opens toward the operating rod 12, a second groove portion 90B that opens subsequent to the first groove portion 90A, and a third groove portion 90C that opens subsequent to the second groove portion 90B. The first groove portion 90A extends in the longitudinal direction, the second groove portion 90B extends in the circumferential direction, and the third groove portion 90C extends in the longitudinal direction and forms a dead end. The first fixing groove 90 is formed in an L-shape when viewed in a plane, and is configured so that when the tip tool 14 is attached to the operating rod 12, the first fixing protrusion (pin) 60 stops in the third groove portion 90C and does not move. The first fixing groove 90 has a depth that allows the head of the fitted first fixing protrusion (pin) 60 to protrude slightly, and a width that allows the shaft portion of the fitted first fixing protrusion (pin) 60 to move.

[0174] The first fixing convex portion (pin) 60 is provided protruding radially from the second connecting portion 42 of the core member 44, and the first fixing groove 90 has a depth that allows the head of the fitted first fixing convex portion (pin) 60 to protrude slightly and a width that allows the shaft portion of the fitted first fixing convex portion (pin) 60 to move, and is configured so that the first fixing convex portion (pin) 60 moves within the first fixing groove 90 to control the movement of the operating rod 12 and the first connecting portion 40.

[0175] The second connecting member 80 constitutes an attachment portion that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and includes a first connecting portion 82 which is an end tool attachment portion that is attached to the (tip) tool portion 30, and a second connecting portion 84 which is thicker than the first connecting portion 82 which is the end tool attachment portion. The first connecting portion 82 is fitted into the attachment portion of the (tip) tool portion 30, and is fixed to the (tip) tool portion 30 by a suitable fastener, such as a pin or the like. The second connecting portion 84 constitutes a hollow core member attachment portion, and has a rod body side connecting portion attachment hole 94 formed therein into which the core member 44 is fitted. Furthermore, a first fixing groove 90 is formed adjacent to the opening edge of the rod body side connecting portion mounting hole 94 .

[0176] The first connecting member 50 is arranged on the side of the operating rod 12 so as to be movable in the axial direction of the operating rod 12, and is fixed to the area of ​​the second connecting member 80 on the operating rod 12 side to control the movement of the second connecting member 80, so that the connecting portion 24 (on the operating rod side) does not come off the first fixing groove 90 of the second connecting member 80 when a tip tool 14 is attached to the operating rod 12. Furthermore, the first connecting member 50 has a fixing means 16 for fixing the first connecting member 50 to the second connecting portion 42 of the first connecting portion 40 in order to control the movement of the second connecting member 80. The fixing means 16 for fixing the first connecting member 50 to the second connecting portion 42 of the first connecting portion 40 is constituted by the second fixing protrusion (plunger) 62 described above.

[0177] In this embodiment, the operating rod body 20 of the operating rod 12 is a rod body having an approximately circular cross-section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 are rod-shaped bodies having an approximately circular cross-section, the first connecting member 50 is an annular body having an approximately circular cross-section, and the second connecting member 80 is an annular body having an approximately circular cross-section. The operating rod body 20, the core member 44, the first connecting member 50 and the second connecting member 80 of the operating rod 12 are arranged in parallel with each other, with the center line extending in the axial direction of the rod body being concentric. The first connecting member 50 is arranged around the second connecting portion 42 of the core member 44, and the second connecting member 80 is arranged around the tip side of the core member 44, and the tip side edge of the first connecting member 50 and the proximal side edge of the second connecting member 80 are formed to face each other.

[0178] Next, the operation method will be described below assuming that an insulated operating rod 12 equipped with the connecting structure 10 according to the fourth embodiment is used to operate an indirect live line tip tool 14 connected to the tip of the insulated operating rod 12 in order to form an overhead distribution line bypass circuit. First, as shown in Figure 32, in order for an operator to attach the tip tool 14 for indirect live-line work to the tip of the operating rod 12, the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14, which constitute the connecting structure 10, are connected. Specifically, the axis of the connecting portion 24 on the operating rod 12 side is aligned with the axis of the connecting portion 32 on the tool tip 14 side, and the first fixing convex portion (pin) 60 is aligned with the first groove portion 90A of the first fixing groove 90. Next, the operating rod 12 is moved toward the tip tool 14, and the first fixing protrusion (pin) 60 is inserted into the second groove portion 90B of the first fixing groove 90. When it reaches the groove wall on the tip tool 14 side of the second groove portion 90B, the operating rod 12 is rotated circumferentially, and the first fixing protrusion (pin) 60 is advanced along the groove of the second groove portion 90B toward the third groove portion 90C. When the connecting structure 10 reaches the mouth of the third groove portion 90C, i.e., when it reaches the dead end of the second groove portion 90B, the operating rod 12 is pulled back from the tip tool 14 side toward the handle side, and the first fixing protrusion (pin) 60 is inserted into the third groove portion 90C.

[0179] When fixing the first connecting member 50 to the second connecting portion 42, as shown in Figure 32 (B), the first connecting member 50 is moved in the longitudinal direction of the operating rod 12 by the action of the second fixing convex portion (plunger) 62 of the first connecting member 50 and the second fixing groove 92 of the core member 44, and the first connecting member 50 is moved to a position where it presses the second connecting member 80, connecting the first connecting member 50 to the second connecting portion 42, and firmly connecting the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the tip tool side) of the tip tool 14. In this embodiment, the axis of the core member 44 and the axis of the second connecting portion 42 are aligned, and the second fixing protrusion (plunger) 62 is aligned with the first groove portion 92A of the second fixing groove 92. Next, the first connecting member 50 is moved toward the tool tip 14, and the second fixing convex portion (plunger) 62 is inserted up to the second groove portion 92B of the second fixing groove 92. When it reaches the groove wall on the tool tip 14 side of the second fixing groove 92, the first connecting member 50 is rotated circumferentially, and the second fixing convex portion (plunger) 62 is advanced along the groove of the second groove portion 92B toward the third groove portion 92C. When the second fixing protrusion (plunger) 62 reaches the groove mouth of the third groove portion 92C, that is, when it reaches the dead end of the second groove portion 92B, the second fixing protrusion (plunger) 62 is fitted into the third groove portion 92C. In this manner, by rotating the first connecting member 50, the action of the second fixing protrusion (plunger) 62 of the first connecting member 50 and the second fixing groove 92 of the second connecting portion 42 moves the first connecting member 50 to a position where it presses the second connecting member 80, thereby connecting the first connecting member 50 to the second connecting portion 42 of the core member 44.

[0180] In the connecting structure 10, the unlocking between the connecting part 24 (on the operating rod side) of the operating rod main body 20 and the connecting part 32 (on the tip tool side) of the tool part (tip tool part) will be described mainly with reference to Fig. 33. The first connecting member 50 is rotated and moved to the position of the second groove part 92B to be temporarily fixed. Then, the connecting portion 24 (on the operating rod side) of the operating rod main body 20 is moved toward the tip side, and as the first connecting member 50 moves, the second connecting member 80 is pushed toward the hand side, removing the first fixing convex portion (pin) 60 constituting the fixing means 16 from the third groove portion 90C, and the operating rod 12 is turned to move the first fixing convex portion (pin) 60 along the second groove portion 90B. When it is positioned in the first fixing groove 90, the operating rod 12 is moved toward the hand side to remove the first fixing convex portion (pin) 60 from the first fixing groove 90, thereby separating the connecting portion 24 (on the operating rod side) of the operating rod 12 and the connecting portion 32 (on the hand side) of the tip tool 14.

[0181] (Modifications of the first to third embodiments) Modifications of the first to third embodiments will be described below with reference to FIGS. In this modified example, the connecting structure 10 is formed not in a position close to the tool tip 14 having the connected portion, but in a position close to the proximal side of the rod body.

[0182] The modified connecting structure 10 connects the proximal rod body and the tip rod body of the two divided rod bodies, and is formed to connect a first operating rod body 12A to which the tip tool 14 constituting the operating rod 12 is connected, and a second operating rod body 12B constituting the proximal operating rod 12. The first operating rod body 12A constitutes a connecting portion with a connected portion formed on its tip side, and the second operating rod body 12B constitutes a rod body with a connecting portion formed on its rear end.

[0183] In a modified example of the first embodiment, the operating rod 12 comprises a long, cylindrical operating rod main body 20 constituting the first operating rod body 12A, and a gripping portion 22 constituting the second operating rod body 12B, which is attached to the rear end, i.e., the front side, of the operating rod main body 20. The operating rod body 20 has the tool tip 14 attached to its tip side, and is provided in its rear end region with a connecting portion 24 (on the operating rod side) that constitutes a connected portion.

[0184] As described above, the embodiment of the present invention has been disclosed in the above description, but the present invention is not limited thereto. In other words, various modifications can be made to the above-described embodiments in terms of mechanism, shape, material, quantity, position, arrangement, etc. without departing from the scope of the technical idea and purpose of the present invention, and these are included in the present invention. In the above embodiment, the connecting portion 24 on the side of the operating rod 12, which is a rod body, and the connecting portion 32 on the side of the connected portion are arranged in parallel and formed so as to be assembled with the center line extending in the axial direction of the rod body as the concentric center, and a convex portion is formed on one connecting portion 24 and a concave portion is formed on the other connecting portion 32, but it is also possible that the connecting portion 24 (on the operating rod side) is formed with, for example, a rod body side connecting portion mounting hole 94 constituting a concave portion, and the connecting portion 32 (on the tip tool side) is formed with, for example, a core member 44 constituting a convex portion. [Industrial Applicability]

[0185] The connecting structure according to the present invention is widely used as a connecting structure for rod-shaped bodies. [Explanation of symbols]

[0186] 10 Connection structure 12 Control rod 12A 1st operation rod 12B 2nd operation rod 14 Tip tools 16 Fixing means 18 Deterrent Measures 20 Operating rod body 20a Recess 22 Gripping part 24 (operating rod side) connection part 26 (1st) Operating rod mounting member 26a Fixing pin 26b Fixing pin 26c Connecting screw 26d Mounting hole 28 (2nd) Operating rod mounting member 28a Locking screw 30 Tool part (tip tool part) 32 (Tool end side) connection part 32a Recess 40 1st connection part 42 2nd connection part 42a Recess 44 Core material 46 Hollow part 46a 1st hollow part 46b 2nd hollow part 46c 3rd hollow part 48 Male thread 50 First connecting member 50a hole 50E Tip surface 52 Third connecting member 58 Female thread 60 First fixing protrusion (pin) 62 Second fixed protrusion (plunger) 62a Cylindrical body 62b biasing body 62c Convex 64 Fixtures 70 Elastic components 72 Elastic member attachment part 74 Elastic member attachment part 76 Second spring component 80 Second connecting member 80E Rear end surface 82 1st connection part 84 2nd connection part 88 Male thread 90 First fixing groove 90A First Groove 90B Second groove 90C 3rd Groove 92 Second fixing groove 92a Recess 92b Travel route 92A First Groove 92B Second groove 92C Third Groove 94 Rod side connection part mounting hole 96 Column-shaped core member attachment part 98 3rd Launching Component

Claims

1. A connecting structure that can connect a rod body and a connected part connected to the rod body to a locked state, A core member configured to connect the connecting portion on the rod body side and the connecting portion on the connected portion side; A first connecting member arranged on the rod body side in an area on the rod body side so as to be movable in the axial direction of the rod body; A second connecting member disposed in a region on the connected portion side; a third connecting member that is inserted into the core member and the first connecting member, The first connecting member is annular and fitted around the core member, The second connecting member has a connecting portion mounting hole that is inserted into the core member, the third connecting member is configured such that a tip side of the third connecting member contacts a proximal end edge of the second connecting member and contacts a proximal end edge of an inner circumferential surface of the first connecting member on the hollow portion side, and is interposed between the first connecting member and the second connecting member; A core member is combined with the connecting portion mounting hole so that the connecting portion on the rod body side and the connecting portion on the connected portion side are connected to each other, the core member has a shape that is inserted into a hollow portion provided in the second connecting portion of the second connecting member, A columnar core member attachment portion is provided in the connecting portion attachment hole, The core member has a hollow annular portion drilled in a longitudinal direction, The hollow portion has a first hollow portion formed at a center thereof, the first hollow portion being elongated and narrow, and a second hollow portion formed on a tip side of the first hollow portion, The first connecting member can be moved by rotating and stopped at a position suitable for pressing the second connecting member by the third connecting member, The rod body is provided with a fixing means constituting a separation prevention means for preventing separation of the connected parts by the connecting structure in an area on the connected part side connected to the rod body, The second connecting member is formed with a fixing means for stopping the fixing means on the rod body in an area on the connected portion side that is connected to the rod body, A rod body connection structure characterized in that, when a connectable portion is connected to the rod body, the third connecting member is fixed to the first connecting member side region of the second connecting member by the fixing means, thereby controlling the movement of the second connecting member and preventing the fixing means on the rod body side from coming off the fixing means formed on the second connecting member.

2. A connecting structure that can connect a rod body and a connected part connected to the rod body to a locked state, A core member configured to connect the connecting portion on the rod body side and the connecting portion on the connected portion side; A first connecting member arranged on the rod body side in an area on the rod body side so as to be movable in the axial direction of the rod body; A second connecting member disposed in a region on the connected portion side; a third connecting member that is inserted into the core member and the first connecting member, The first connecting member is annular and fitted around the core member, The second connecting member has a connecting portion mounting hole that is inserted into the core member, the third connecting member is configured such that a tip side of the third connecting member contacts a proximal end edge of the second connecting member and contacts a proximal end edge of an inner circumferential surface of the first connecting member on the hollow portion side, and is interposed between the first connecting member and the second connecting member; A core member is combined with the connecting portion mounting hole so that the connecting portion on the rod body side and the connecting portion on the connected portion side are connected to each other, the core member has a shape that is inserted into a hollow portion provided in the second connecting portion of the second connecting member, A columnar core member attachment portion is provided in the connecting portion attachment hole, The core member has a hollow annular portion drilled in a longitudinal direction, The hollow portion has a first hollow portion formed at a center thereof, the first hollow portion being elongated and narrow, and a second hollow portion formed on a tip side of the first hollow portion, The first connecting member is configured to be moved by rotating and stopped at a position suitable for pressing the second connecting member by the first connecting member, The connecting portion on the rod body side and the connecting portion on the connected portion side have a convex portion formed on one side and a concave portion formed on the other side, and are configured to be connected by combining the convex portion and the concave portion, The first connecting member and the second connecting member are configured to be separated by moving the connected first connecting member and the connected second connecting member in opposite directions, The rod body is provided with a suppression means that constitutes a separation prevention means for preventing separation of the rod body and the rod body connected by the connection structure, A rod body connecting structure, characterized in that the restraining means is configured to press the third connecting member toward the second connecting member so that the interlocking convex and concave portions do not separate when connected.

3. A second resilient member is disposed in a second hollow portion that exists between a proximal end of the columnar core member attachment portion and a boundary wall portion of the first hollow portion of the hollow portion, 3. The rod body connecting structure according to claim 1 or 2, wherein the second resilient member is configured to contract and push the columnar core member mounting portion and the second connecting portion toward the tip side when locked, and is configured to be in a lightly contracted state in the locked state and to be further contracted when the second connecting member is pulled toward the front side in the release operation.

Images