Connection structure of the rod body

Abstract

The purpose of the present invention is to provide a rod body coupling structure that can further ensure safety.　This coupling structure 10 for coupling a rod body and a coupling part to be coupled to the rod body is characterized by comprising: a first coupling member 50 which is disposed in a region on the rod body side; and a second coupling member 80 which is disposed in a region on the side of the coupling part to be coupled to the rod body. The coupling structure is also characterized by being configured such that: the rod body has, disposed in the region on the side of the coupling part to be coupled to the rod body, a fixation means 16 that constitutes a separation preventing means for preventing elements coupled by the coupling structure 10 from separating; the second coupling member 80 has, formed in the region on the side of the coupling part to be coupled to the rod body, a fixation means 16 for halting the rod-body side fixation means 16; the first coupling member 50 is disposed on the rod body side so as to be movable in the axial direction of the rod body; and upon attachment of the coupling part to the rod body, the first coupling member 50 is fixed, by means of the fixation means 16, to a first-coupling-member side region of the second coupling member 80, controls the movement of the second coupling member 80 so that the rod-body side fixation means 16 will not be detached from the fixation means 16 formed in the second coupling member 80.

Description

Technical Field

[0001] The present invention relates to a connecting structure of rod bodies, and particularly to a connecting structure between an insulating operating rod for indirect work used in, for example, indirect live-line work and a tip tool connected thereto.

Background Art

[0002] Conventionally, several proposals have been made regarding the connecting structure between a tool for indirect live-line work and an insulating operating rod for indirect live-line work (Patent Documents 1 to 3). In indirect live-line work, it is extremely important to ensure the safety of the workers during the work, and various tools for indirect live-line work such as a wire stripper that is detachably connected to the tip of the insulating operating rod are considered so that they do not accidentally fall off during the work. The connecting structure of the prior art document 1 adds a second shift groove portion having a substantially horizontal L-shape composed of a horizontal groove portion and a vertical groove portion to a first shift groove portion having a substantially reverse L-shape composed of a vertical groove portion, a horizontal groove portion, and a vertical groove portion in the latching groove of the connecting fitting, or forms an additional vertical groove in the vertical groove. And even if the pin moves to the upper end in the vertical groove, lateral retention is provided, and it is difficult for the pin to come off from the latching groove. The connecting structure of the prior art document 2 has a common operating rod having a connecting portion capable of connecting a rod-shaped member and a tip tool and a fixing portion for locking the tip tool. The fixing portion is composed of a core portion in which inclined portions are connected in a bead-like manner, and a slide member that can slide along the axial direction of the core portion and abut against the tip tool. The slide member is formed such that each contact portion of the pressing portion presses the core portion in the radial direction of the core portion and tightens and fixes the tip tool. The connecting structure of the prior art document 3 has a tool portion provided with a cylindrical shaft portion, a pair of push buttons, and two leaf springs. The connecting fitting has a shaft hole and a pair of notch grooves. The shaft portion can be introduced and fitted into the shaft hole, and by gripping the knob and making the latch plate protrude and retract from the recess, the operating rod and the tip tool can be connected.

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 connection structure according to claim 1 of the present invention is a connection 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 the rod body side region 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, The first connecting member is annular and fitted around the core member; The second connecting member is a core member is A connecting portion mounting hole is formed, 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 first connecting member and the second connecting member are configured to be pressed toward the tip side in a locked state by a first resilient member interposed between a proximal side of the first connecting member and a tip side of the rod body, The core member is a hollow portion provided in the second connecting portion of the second connecting member. the connecting part mounting hole formed inIt has a shape to be inserted into, In the connecting part mounting hole, a columnar core member mounting part is provided. The columnar core member mounting part is configured to abut against the hand side part of the second connecting member. The core member has a hollow annular hollow part drilled in the longitudinal direction. In the hollow part, at the center, an elongated constricted first hollow part is formed, and a second hollow part is formed on the tip side of the first hollow part. A second elastic member is disposed in the second hollow part existing between the hand side end of the columnar core member mounting part and the boundary wall part of the first hollow part of the hollow part. The second elastic member is configured to contract when locking the columnar core member mounting part and the second connecting part and push them to the tip side. In the locked state, it is in a slightly contracted state, and when the second connecting member is pulled to the front side during the unlocking operation, it is configured to be further contracted. The core member is provided with a male screw part constituting a fixing means on the outer peripheral part of the region where the first connecting member is interposed. The first connecting member is provided with a female screw part constituting a fixing means inside the cylinder of the region where the first connecting member is interposed. The fixing means of the first connecting member is screwed to the fixing means of the core member, and by turning the first connecting member, it can be moved and stopped at a position suitable for pressing the second connecting member by the first connecting member. The rod body is provided with fixing means constituting separation prevention means for preventing separation of what is connected by a connecting structure in the region on the side of the connected part 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 the region on the side of the connected part connected to the rod body. When the connected part is connected to the rod body, the the connecting part on the rod body side is the constitutes the separation prevention means of the rod body Fixed to the first connecting member side region of the second connecting member by the fixing means, controlling the movement of the second connecting member, and formed so that the fixing means on the rod body side does not come off from the fixing means formed on the second connecting member. It is a connecting structure of a rod body. to the formed fixing means ​The connecting structure of the rod body according to claim 2 of the present invention is a connecting structure that can be brought into a locked state by connecting the rod body and the connected portion connected to the rod body, a core portion configured such that a connecting portion on the rod body side and a connecting portion on the connected portion side are connected, material and , a first connecting member disposed on the rod body side so as to be movable in the axial direction of the rod body in a region on the rod body side, and a second connecting member disposed in a region on the connected portion side, the first connecting member is annular and is fitted and loaded around a core member, the second connecting member has a connecting portion mounting hole into which the core member is inserted, is and is configured such that the 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, the first connecting member and the second connecting member are configured to be pressed toward the tip side by a first elastic member that constitutes a restraining means inserted between the hand side of the first connecting member and the tip side of the rod body, the core member has a shape that is inserted into a cavity portion provided in the second connecting portion of the second connecting member, , when in the locked state a columnar core member mounting portion is provided in the connecting portion mounting hole, the columnar core member mounting portion is configured to abut against a portion on the hand side of the second connecting member, the connecting part mounting hole formed in the core member has a hollow annular hollow portion bored in the longitudinal direction, in the hollow portion, a first hollow portion that is slender and constricted is formed at the center, and a second hollow portion is formed on the tip side of the first hollow portion, a second elastic member that constitutes a restraining means is disposed in the second hollow portion existing between the end portion on the hand side of the columnar core member mounting portion and the boundary wall portion of the first hollow portion of the hollow portion, the second elastic member is configured to contract when locked and push toward the tip side the columnar core member mounting portion and the second connecting portion, and to be in a slightly contracted state in the locked state and to further contract when the second connecting member is pulled toward the hand side during the unlocking operation, ​​​The core member is provided with a male screw portion that constitutes a fixing means on the outer peripheral portion of the region where the first connecting member is interposed. The first connecting member is provided with a female screw portion that constitutes a fixing means inside the cylinder of the region where the first connecting member is interposed. The fixing means of the first connecting member is configured to be screwed into the fixing means of the core member and to be moved by turning the first connecting member so as to be stopped at a position suitable for pressing the second connecting member by the first connecting member. One of the connecting portion on the rod body side and the connecting portion on the connected portion side is formed with a convex portion, and the other is formed with a concave portion, and the convex portion and the concave portion are configured to be combined and connected. 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 restraining means that constitutes a separation preventing means for preventing the separation of the connected members by the connecting structure. The restraining means is characterized in that the first connecting member is pressed toward the second connecting member side so that the convex portion and the concave portion engaged at the time of connection do not separate, and is a connecting structure of a rod body.

Effects of the Invention

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

[0007] The above object, other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments for carrying out the invention with reference to the drawings.

Brief Description of the Drawings

[0008]

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DETAILED DESCRIPTION OF THE INVENTION

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

[0010] The connection structure of the rod body according to this invention includes, for example, a connection structure between the tip of the rod body and the portion attached to the rod body of the connection tool at the tip side of the rod body, or a connection structure for connecting two divided rod bodies, which are representative examples. In this specification, one of the connection tool, the tip tool, and the two divided ones is referred to as a connector.

[0011] In the operating rod 12 which is a rod-shaped body according to an embodiment of the present invention, a connecting structure 10 that connects a connecting portion connected to a coupler and a connected portion to be connected in a tip tool 14 which is a coupler connected to the operating rod 12 is, for example, an insulating operating rod for indirect live-line work used in indirect live-line work performed to avoid power outages around a work site, and relates to a connecting structure between the operating rod 12 and a connected portion to be connected in a coupler such as a tip tool that is detachably connected to the tip thereof.

[0012] Generally, an insulating operating rod is composed of a long insulating operating rod and an electric working tool, that is, a tip tool, attached to the tip of this operating rod. Depending on the purpose of the work, such as gripping or cutting a high-voltage distribution line, a tip tool suitable for it is replaced and used. The operating rod 12 according to the present invention is used for the same purpose as the above-mentioned insulating operating rod, and the operating rod 12 may be referred to as an insulating operating rod.

[0013] A connecting structure 10 according to an embodiment of the present invention is a connecting structure that connects a connecting portion connected to another object of the operating rod 12 which is a rod-shaped body and a connected portion to be connected to the operating rod 12 in the tip tool 14 connected to the operating rod 12.

[0014] On the side of the connecting portion 24 of the operating rod 12 which is a rod-shaped body and the connecting portion 32 on the side of the connected portion, a convex portion is formed on one side and a concave portion is formed on the other side, and the convex portion and the concave portion are configured to be combined and connected. 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 tip tool side).

[0015] In the region of the connecting portion of the operating rod 12 where the operating rod 12 is connected to another object, a first connecting member 50 is disposed, and in the region of the connected portion of the tip tool 14 where the tip tool 14 is connected to the operating rod 12, a second connecting member 80 is disposed. The operation rod 12 is provided with a fixing means 16 that constitutes a separation prevention means for preventing separation of a structure connected by a connection structure in a region on the side connected to the tip tool 14. The second connection member 80 is provided with a fixing means 16 that constitutes a separation prevention means for preventing separation of a structure connected by a connection structure in a region on the side connected to the operation rod 12. A first fixing groove 90 that constitutes the fixing means 16 is formed. The first connection member 50 is disposed on the operation rod 12 so as to be movable in the axial direction of the operation rod. When the tip tool 14 is attached to the operation rod 12 and the connection portion 24 (on the operation rod side) and the connection portion 32 (on the tip tool side) are in a locked state, it is fixed to the region on the side of the first connection member 50 of the second connection member 80 by the fixing means 16 of the operation rod 12, controls the movement of the second connection member 80, and is formed so that the fixing means 16 of the operation rod 12 does not come out of the first fixing groove 90 of the fixing means 16 of the second connection member 80.

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

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

[0018] The first connection member 50 is formed to press the end portion on the first connection member 50 side of the second connection member 80 from the hand side toward the tip side when the operation rod 12 is attached to the second connection member 80 on the tip tool 14 side by the fixing means 16 on the operation rod 12 side.

[0019] The fixing means 16 is constituted by a fixing pin 60 that constitutes a first fixing convex portion formed on the connection portion 24 on the operation 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 side of the operating rod 12. The fixing means 16 formed on the other second connecting member 80 is constituted by a bent fixing groove formed at a corresponding position in the first connecting member 50 and / or the second connecting member 80. The bent fixing grooves (the first fixing groove 90 and the second fixing groove 92) include a groove portion on the opening side that extends toward the tip side from an opening for fitting the first fixing convex portion (pin) 60 and the plunger 62 constituting the second fixing convex portion in the axial direction, a groove portion that extends in the circumferential direction by changing the extending direction from the groove portion on the opening side, and further, a fixing groove portion that extends in the axial direction toward the hand side by changing the extending direction. It is configured in a substantially U-shape in plan view.

[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 side of the connected portion 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 at which the head of the fitted fixing pin 60 slightly protrudes and a width at which the shaft portions of the fitted fixing pin 60 and the plunger 62 can move, and is configured such that the fixing pin 60 and the 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 side of the operating rod 12 is constituted by a second fixing convex portion (plunger) 62 that constitutes a positioning member formed on the first connecting member 50, and the second fixing convex portion (plunger) 62 that constitutes the positioning member may be formed so as to fit into the second fixing groove 92 which is the fixing means 16 disposed on the second connecting member 80.

[0022] When the first connecting member 50 is attached to a connecting portion 24 (on the operation rod side) that constitutes a connecting portion to which another part of the operation rod 12 is connected and a connecting portion 32 (on the tip tool side) that constitutes a connected portion to which the tip tool 14 is connected, it is configured to be screwed into the second connecting member 80 of the connecting portion 32 (on the tip tool side) or the connecting portion 24 on the side of the operation rod 12, and may be configured so as not to move away from the second connecting member 80 when the tip tool 14 is fixed to the operation rod 12.

[0023] On one of the connecting portion 24 on the rod body side and the connecting portion 32 on the connected portion side, a first fixing convex portion 60 which is a fixing means 16 constituting a convex portion is formed, and on the other, a first fixing groove 90 which is a fixing means 16 constituting a concave portion is formed, and the convex portion and the concave portion are configured to be 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 relative to the connected portion. The first connecting member 50 and the second connecting member 80 are configured such that the connected first connecting member 50 and second connecting member 80 are separated by moving in opposite directions. The operation rod 12 is provided with a restraining means 18 which constitutes a separation preventing means for preventing the connected members from separating due to the connecting structure. The restraining means 18 presses the first connecting member 50 toward the second connecting member 80 so that the first fixing convex portion 60 which is a fixing means 16 constituting a convex portion engaged when connected and the first fixing groove 90 constituting a concave portion do not separate.

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

[0025] The restraining means 18 is constituted by an elastic member 70. The elastic member 70 is disposed so as to press the first connecting member 50 toward the connected member side, or to press the second connecting member 80 so that the first fixing convex portion 60 forming the convex portion engaged when the second connecting member 80 is connected and the first fixing groove 90 forming the concave portion do not separate from each other. The elastic member 70 is interposed in 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 side, or to press the fixing means 16 into the fixing groove 90.

[0026] The operating rod 12 is formed with a first connecting portion 40 thinner than the operating rod main body 20 on the side where the first connecting portion 40 is connected to the tip tool, and a second connecting portion 42 thicker than the first connecting portion 40 is continuously provided on the tip tool 14 side of the first connecting portion 40. The first connecting portion 40 is configured to form a moving space in the axial direction of the first connecting member 50 between the operating rod main body 20. The first connecting portion 40 Restraining means 18 A coil spring, which is the elastic member 70 constituting the above, can be disposed around it. When the connecting portion 32 (on the tip tool side), which is the connected portion, is attached to the connecting portion 24 (on the operating rod side) on the rod body side to be 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, controls the movement of the second connecting member 80, and is formed so that the fixing means 16 on the rod body side does not come off from the fixing means 16 formed on the second connecting member 80.

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

[0028] 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 with the center line extending in the axial direction of the rod body being concentric. A convex portion is formed on one side and a concave portion is formed on the other side, and the convex portion and the concave portion are configured to be combined and connected. In this embodiment, a core member 44 that constitutes a convex portion is formed in the connecting portion 24 (on the operating rod side), and a rod - side connecting - portion attachment hole 94 that constitutes 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 a substantially circular cross - section, and the rod - side connecting - portion attachment hole 94 is an annular body with a substantially circular cross - section. They are arranged in parallel with the center line extending in the axial direction of the rod body being concentric. The core member 44 is combined with the rod - side connecting - portion attachment hole 94 so that the connecting portion 24 on the side of the operating rod 12 and the connecting portion 32 on the side of the connected portion are connected.

[0029] The first connecting member 50 is disposed on the operating rod in the region on the proximal - end side of the operating rod 12 that is divided into two. The second connecting member 80 can be disposed on the operating rod on the tip - tool side of the operating rod 12 that is divided into two.

[0030] (First Embodiment)

[0031] The connection structure 10 according to the first embodiment of the present invention will be mainly described with reference to FIGS. 1 to 9. The connection structure 10 according to the first embodiment of the present invention is a connection structure that connects the operating rod 12 constituting a rod body and the connection site of the tip tool 14 constituting the connected portion connected to the operating rod 12.

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

[0033] The operating rod 12 that constitutes the insulated operating rod for live-line work indirectly, particularly the structure of the operating rod main body 20, may be, for example, a single rod body, or two rod bodies arranged in parallel along the axis. The insulated operating rod for live-line work indirectly only needs to be electrically insulating, and it is better if it can be made lighter. For example, various plastics with toughness such as fiber-reinforced plastics (FRP) can be used.

[0034] The tip tool 14 such as a tool for live-line work indirectly is composed of, for example, a wire stripper for stripping the insulating coating of an overhead distribution line in a live state, a yatco, a locking tool, etc. The tip tool 14 includes a tool part 30 that directly contacts an electric wire or the like, and a connecting part 32 (on the tip tool side) that forms a connected part and is formed in a region where the tool part 30 is connected to the operating rod 12.

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

[0036] In the region of the operating rod 12 on the side connected to the tip tool 14, fixing means 16 that constitutes separation prevention means for preventing separation of the connected parts connected by the connecting structure for fixing the tip tool 14 is provided. Furthermore, the operating rod 12 is connected by a connecting structure that suppresses their movement so that the connection between the operating rod 12 and the tip tool 14 does not become disconnected in a region on the side connected to the tip tool 14, and a suppressing means 18 that constitutes separation preventing means for preventing separation of the connected components is provided.

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

[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 the (first) operating rod attachment member 26 that constitutes the operating rod attachment member, as well as the fixing pins 26a and 26b.

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

[0040] (The connecting portion on the operating rod side) 24, in this embodiment, includes a core member 44 that constitutes the first connecting portion 40 and the second connecting portion 42. The core member 44 is in the shape of a hollow cylinder and is disposed around the (first) operating rod attachment member 26 and the (second) operating rod attachment member 28 that constitute the operating rod attachment member.

[0041] In this embodiment, the core member 44 forms a first connecting portion 40, which is a cylindrical portion thinner than the operating rod body 20, on the near side so as to be attached to the operating rod body 20, and forms a second connecting portion 42, which is a thick cylindrical portion formed thicker than the thin first connecting portion 40 on the near side, on the distal side.

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

[0043] The core member 44 has a hollow annular hollow portion 46 drilled in the longitudinal direction. In the approximate center of the hollow portion 46, an elongated and constricted first hollow portion 46a is formed, and on the distal side of the first hollow portion 46a, a relatively thick second hollow portion 46b having a diameter longer than that of the first hollow portion 46a is formed. Furthermore, in the hollow portion 46 on the near side of the first hollow portion 46a, a relatively thick third hollow portion 46c having a diameter longer than that of the first hollow portion 46a is formed.

[0044] In the third hollow portion 46c of the hollow portion 46 of the core member 44, an operating rod attachment member ((first) operating rod attachment member 26) for attaching to the operating rod body 20 is disposed. The operating rod attachment member ((first) operating rod attachment member 26) is fixed to the tip of the operating rod body 20, and the third hollow portion 46c of the core member 44 is fitted and attached around the (first) operating rod attachment member 26. (Second) operating rod attachment member 28 is inserted into the hollow portion 46, with its near side located in the third hollow portion 46c, its distal side slidably fitted into the first hollow portion 46a, and further, its distal side extending into the second hollow portion 46b and connected to a columnar core member attachment portion 96. In this embodiment, the (second) operating rod mounting member 28 is a columnar rod body, having a head with a larger diameter at the hand-held side than that of the first hollow portion 46a, and a rod-shaped body with a diameter substantially the same as that of the first hollow portion 46a at its tip side. Accordingly, a hollow portion is left between the second hollow portion 46b and the (second) operating rod mounting member 28, and a 2 resilient member 76 is configured to be fitted therein.

[0045] On one of the connecting portion on the rod body side and the connecting portion on the connected portion side, a first fixing convex portion 60 which is a fixing means 16 for forming a convex portion is formed, and on the other, a first fixing groove 90 which is a fixing means 16 for forming a concave portion is formed. The convex portion and the concave portion are configured to be combined and connected.

[0046] The fixing means 16 is constituted by a first fixing convex portion (pin) 60 formed on the connecting portion on the rod body side and constituting a separation preventing 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 formed at a corresponding position in the core member 44 and / or the second connecting member 80 and constituting a bent separation preventing means.

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

[0048] The connecting portion 24 (on the operating rod side) includes a core member 44 fixed at the center at the tip of the operating rod main 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, on the hand-held side of the core member 44, with a restraining means 18 constituted by a resilient member 70 such as a coil spring formed to resiliently expand from the hand-held side of the operating rod 12 toward the tip tool 14 side around it. In this first embodiment, an elastic member mounting portion 72 for stopping the distal end side of the elastic member 70 is formed on the hand side of the first connecting member 50. Furthermore, on the side of the operating rod body 20 of the operating rod 12 that faces the outer surface on the hand side of the first connecting member 50, an elastic member mounting portion 74 for stopping the rear end side of the elastic member 70 is formed at the distal end side thereof. The elastic member 70 that constitutes the restraining means 18 is configured to bias the first connecting member 50 toward the second connecting member 80 side that constitutes the connected portion when the tip tool 14 is attached to the operating rod 12.

[0049] The first elastic member 70 that constitutes the restraining means 18 pushes the first connecting member 50 toward the distal end side during locking, and accordingly pushes the second connecting member 80 toward the distal end side. (Type 1, 3, 4)

[0050] The diameter of the restraining means 18 (elastic member 70) is shorter than the diameters of the first connecting member 50 and the elastic member mounting portion 74, and is configured not to protrude beyond the first connecting member 50 and the elastic member mounting portion 74. Therefore, the probability that the restraining means 18 hits other articles during use is extremely low.

[0051] The first connecting portion 40 is configured to form a movement space for the first connecting member 50, which will be described later, between the operating rod body 20. The second connecting portion 42 is configured such that the first fixing convex portion (pin) 60 is disposed, and a second connecting member 80 that constitutes the connecting portion (on the tip tool side) 32 is inserted around the first fixing convex portion (pin) 60.

[0052] The first connecting member 50 is annular and is fitted and loaded around a substantially columnar core member 44. The first connecting member 50 is configured to be movable in the longitudinal direction of the core member 44 and the operating rod body 20, and is configured to be elastically biased toward the distal end side by an elastic member 70 interposed between the hand side of the first connecting member 50 and the distal end side of the operating rod body 20. The first fixing convex portion (pin) 60 is formed to extend in the radial direction at the center of the connecting portion 24 (on the operating rod side). The first fixed convex part (pin) 60 is formed so as to be axially movable along with the movement of the operating rod 12 relative to the tip tool 14 and circumferentially rotatable along with the rotation of the operating rod 12.

[0053] (On the tip tool side) The connecting part 32 constitutes an attached part to be attached to the operating rod 12, and a second connecting member 80 formed so as to be able to connect the connecting part 24 on the operating rod 12 side is disposed. The second connecting member 80 has a first fixing groove 90 which is a fixing means 16 for stopping the first fixed convex part (pin) 60 disposed on the connecting part 24 on the operating rod 12 side in a region on the side connected to the operating rod 12. The first fixing groove 90 constitutes a fixing means 16 for fitting the first fixed convex part (pin) 60 and fixing the first fixed convex part (pin) 60 when the connecting part 24 (on the operating rod side) and the connecting part 32 (on the tip tool side) are connected.

[0054] The first connecting member 50 and the second connecting member 80 have substantially the same shape or an approximate shape in their outer shapes. In this embodiment, they are cylindrical shapes with a circular cross-section, and the diameters of their outer surfaces have the same or approximate 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 other things is extremely low.

[0055] The first connecting member 50 and the second connecting member 80 are configured such that the surfaces in contact with each other are in close contact, and the first connecting member 50 presses the second connecting member 80 by the biasing force of the suppressing means 18 (elastic member 70). In this embodiment, the front end 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 front end surface 50E of the first connecting member 50 and the rear end surface 80E of the second connecting member 80 are in close contact.

[0056] The elastic member mounting portion 72 at the rear end of the first connecting member 50 has a plane where the surface facing the elastic member mounting portion 74 is orthogonal to the axial direction. On the other hand, the opposing surface at the tip of the elastic member mounting portion 74 is a plane that is intersect orthogonal to the axial direction. The restraining means 18 (elastic member 70) sandwiched therebetween is configured to bias the first connecting member 50 in parallel to the axial direction.

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

[0058] The first fixing groove 90 has a first groove portion 90A that opens to the operation rod 12 side, a second groove portion 90B that opens following the first groove portion 90A, and a third groove portion 90C that opens following 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 to form a dead end. The first fixing groove 90 is formed in an L shape in plan view, and is configured such that when the tip tool 14 is attached to the operation rod 12, the first fixing convex portion (pin) 60 stops in the third groove portion 90C and does not move. The first fixing groove 90 has a depth at which the head of the fitted first fixing convex portion (pin) 60 slightly protrudes, and a width at which the shaft portion of the fitted first fixing convex portion (pin) 60 can move.

[0059] With the above configuration, the second connecting member 80 presses the fixing means 16 (first fixing convex portion (pin) 60) that protrudes and is fixed in the radial direction at the second connecting portion 42 of the first connecting portion 40 connected to the operation rod main body 20 at the groove bottom of the third groove portion 90C toward the tip side (mounting portion) by the biasing forces of the elastic member 70 and the second elastic member 76, and meshes the third groove portion 90C with the fixing means 16 (first fixing convex portion (pin) 60), so that the second connecting member 80 does not move in the unlocking direction.

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

[0061] The first groove portion 90A extends so that the fixing means 16 (the first fixing projection (pin) 60) can be advanced toward the tip side, that is, it extends in the direction of connecting the operating rod 12 to the tip tool 14. In this embodiment, it is composed of a groove parallel to the axial direction.

[0062] The second groove portion 90B has a length that allows the fixing means 16 (the first fixing projection (pin) 60) advanced radially from the first groove portion 90A to advance to a position where it does not return to the first groove portion 90A again. In this embodiment, it is composed of a groove perpendicular to the axial direction. intersect and is configured as a groove 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 an approximate width, and each is composed of a groove bent in an L shape. Their width and depth are configured to allow the first fixing projection (pin) 60 and the second fixing projection (plunger) 62 to be advanced in the extending direction of the groove in a fitted state.

[0064] The third groove portion 90C extends so that the fixing means 16 (the first fixing projection (pin) 60) can be advanced toward the hand side, that is, it extends in the direction opposite to the direction of connecting the operating rod 12 to the tip tool 14, and is configured as a dead end so that the fixing means 16 (the first fixing projection (pin) 60) that has advanced to a position where it does not move radially along the second groove portion 90B does not advance further in the direction opposite to the connecting direction.

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

[0066] The second connecting member 80 constitutes a portion to be attached to the (tip) tool portion 30 and connected to the operating rod 12, and includes a first connecting portion 82 which is a tip tool attachment portion 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 tip tool attachment portion. The first connecting portion 82 is fitted to the attachment portion of the (tip) tool portion 30 and fixed to the (tip) tool portion 30 by an appropriate fixture such as a pin or the like. The second connecting portion 84 constitutes a hollow core member attachment portion, and a rod - side connecting portion attachment hole 94 fitted to the core member 44 is formed. The second connecting portion 84 is provided with a columnar core member attachment portion 96 in the rod - side connecting portion attachment hole 94. The columnar core member attachment 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 attachment member 28, and is connected in contact with the tip side of the (second) operating rod attachment member 28.

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

[0068] The second elastic member 76 constituting the restraining means 18 compresses the core member attachment portion 96 and the second connecting portion 84 during locking and pushes them toward the tip side. (Type 1 - 3) The second elastic member 76 always presses the core member attachment portion 96 and the second connection portion 84 toward the tip side. In the locked state, it is in a slightly contracted state, and when the second connection member 80 is pulled toward the near side during the release operation, it becomes further contracted.

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

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

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

[0072] The (second) operating rod attachment member 28 extends toward the near side from the columnar core member attachment portion 96, and a second elastic member 76 is interposed around it. The 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 substantially the same outer shape or similar shapes. In this embodiment, they are cylindrical with a circular cross-section and have the same or approximately the same diameter on the outer surface. 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 other objects is extremely low.

[0074] The surfaces where the first connecting member 50 and the second connecting member 80 are in contact are in close contact. The first connecting member 50 is configured to press the second connecting member 80 with a uniform force by the biasing force of the restraining means 18 (elastic member 70).

[0075] The elastic member mounting portion 72 at the rear end of the first connecting member 50 has a plane where the surface facing the elastic member mounting portion 74 is perpendicular to the axial direction. On the other hand, the facing surface at the tip of the elastic member mounting portion 74 is a plane perpendicular to the axial direction. The restraining means 18 (elastic member 70) sandwiched therebetween is configured to bias the first connecting member 50 with a force parallel to the axial direction.

[0076] The first connecting member 50 is disposed on the operating rod 12 so as to be movable in the axial direction of the operating rod 12. When the tip tool 14 is attached to the operating rod 12, it is fixed to the region of the second connecting member 80 on the side of the operating rod 12 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 from the first fixing groove 90 of the second connecting member 80. The first connecting member 50 has fixing means 16 for controlling the movement of the second connecting member 80.

[0077] The fixing means 16 of the core member 44 is provided with a male screw portion 48 on the outer periphery of the region where the first connecting member 50 is loaded and the first connecting member 50 is interposed. On the other hand, the fixing means 16 of the first connecting member 50 is provided with a female screw portion 58 in the cylinder of the region interposed in the core member 44. The fixing means 16 of the first connecting member 50 is screwed with 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 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 with a substantially circular cross-section, the first connecting portion 40 and the second connecting portion 42 of the core member 44 are rod-shaped bodies with a substantially circular cross-section, the first connecting member 50 is an annular body with a substantially circular cross-section, and the second connecting member 80 is an annular body with a substantially circular cross-section. And the operating rod body 20 of the operating rod 12, the core member 44, the first connecting member 50, and the second connecting member 80 are arranged in parallel with the center lines extending in the axial direction of the rod bodies being concentric. The first connecting member 50 is disposed around the second connecting portion 42 of the core member 44, the second connecting member 80 is disposed around the tip side of the core member 44, and the edge on the tip side of the first connecting member 50 and the edge on the proximal side of the second connecting member 80 are formed to face each other.

[0079] Next, regarding the operation method, assuming that an insulating operating rod 12 having the connecting structure 10 according to the embodiment is used to form an overhead distribution line bypass circuit, the tip tool 14 for indirect live working connected to the tip thereof by the insulating operating rod 12 is operated, and the following description will be given. First, as shown in FIGS. 1 and 2, in order for an operator to attach the tip tool 14 for indirect live working to the tip of the insulating operating rod 12, the connecting portion 24 (on the operating rod side) of the insulating operating rod 12 constituting the connecting structure 10 is connected to the connecting portion 32 (on the tip tool side) of the tip tool 14. Specifically, the axis of the connecting portion 24 (on the operating rod side) on the operating rod 12 side is aligned with the axis of the connecting portion 32 (on the tip tool side) on the tip tool 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, move the operating rod 12 toward the tip tool 14. When the first fixing projection (pin) 60 is inserted into the second groove portion 90B of the first fixing groove 90 and reaches the groove wall on the tip tool 14 side of the second groove portion 90B, turn the operating rod 12 in the circumferential direction and advance the first fixing projection (pin) 60 along the groove of the second groove portion 90B toward the third groove portion 90C. When the connecting structure 10 reaches the groove opening of the third groove portion 90C, that is, when it reaches the dead end of the second groove portion 90B, pull the operating rod 12 back toward the hand side from the tip tool 14 side and fit the first fixing projection (pin) 60 into the third groove portion 90C. Therefore, by turning the first connecting member 50, the first connecting member 50 is moved in the longitudinal direction of the operating rod 12 by the action of the male screw portion 48 of the first connecting member 50 and the female screw portion 58 of the core member 44, and is moved to a position where the second connecting member 80 is pressed by the first connecting member 50, 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, regarding the unlocking of the lock between the connecting portion 24 (on the operating rod side) of the operating rod body 20 and the connecting portion 32 (on the tip tool side) of the tool portion (tip tool portion) 30 in the connecting structure 10, it will be mainly described with reference to FIG. 4. At that time, turn the first connecting member 50 to disengage the engagement between the male screw portion 48 and the female screw portion 58 and move it toward the hand side. Then, move the connecting portion 24 (on the operating rod side) of the operating rod body 20 toward the tip side (push the first connecting member 50 toward the hand side with the second connecting member 80) to remove the first fixing projection (pin) 60 constituting the fixing means 16 from the third groove portion 90C, turn the operating rod 12 to move the first fixing projection (pin) 60 along the second groove portion 90B, and when it is positioned in the first groove portion 90A of the first fixing groove 90, move the operating rod 12 toward the hand side to remove the first fixing projection (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 tip tool side) of the tip tool 14.

[0081] (Second Embodiment)

[0082] Next, a connection structure according to a second embodiment, which is a modification of the first embodiment, will be mainly described with reference to FIGS. 10 to 15. In the description of the connection structure according to the second embodiment, which is a modification of the first embodiment, for the constituent elements and components common to the connection structure 10 according to the first embodiment shown in FIGS. 1 to 9, the same reference numerals will be given and the description of the common constituent elements and components will be omitted. Hereinafter, the description will focus on the characteristic constituent elements and components of the connection structure, which is a modification of the first embodiment.

[0083] The connection structure 10 according to the second embodiment of the present invention is a connection structure that connects an operating rod 12 constituting a rod body and a connection portion of a tip tool 14 constituting a connected portion connected to the operating rod 12.

[0084] The operating rod 12 includes a long cylindrical operating rod main body 20, a gripping portion 22 attached to the rear end, i.e., the front side, of the operating rod main body 20, and a connection portion (on the operating rod side) formed in a region on the front end side, i.e., the side attached to the tip tool 14, of the operating rod main body 20.

[0085] The tip tool 14, such as a tool for live-line work, is composed of, for example, a wire stripper for stripping the insulating coating of an overhead power line in a live state, a yatco, a locking tool, and the like. The tip tool 14 includes a tool portion 30 that directly contacts an electric wire or the like, and a connection portion (on the tip tool side) that forms a connected portion and is formed in a region where the tool portion 30 is connected to the operating rod 12.

[0086] The connection portion 24 on the side of the operating rod 12, which is a rod body, and the connection portion 32 on the connected portion side are arranged in parallel with the center line extending in the axial direction of the rod body being concentric. A convex portion is formed on one side, and a concave portion is formed on the other side, and the convex portion and the concave portion are configured to be combined and connected. In this embodiment, a core member 44 that forms a convex portion is formed in the connection portion 24 (on the operating rod side), and a rod body side connection portion attachment hole 94 that forms a concave portion is formed in the connection portion 32 (on the tip tool side). The core member 44 is a rod-shaped body with a substantially circular cross-section, and the rod-side connecting portion attachment holes 94 are annular bodies with a substantially circular cross-section. They are arranged concentrically with the center line extending in the axial direction of the rod body. The core member 44 is combined with the rod-side connecting portion attachment holes 94 so that the connecting portion 24 on the side of the operating rod 12 and the connecting portion 32 on the side of the connected portion are connected.

[0087] In the region of the operating rod 12 on the side connected to the tip tool 14, fixing means 16 is provided which constitutes separation prevention means for preventing separation of the connected parts connected by a connecting structure for fixing the tip tool 14. Furthermore, in the region of the operating rod 12 on the side connected to the tip tool 14, restraining means 18 is provided which constitutes separation prevention means for preventing separation of the connected parts connected by a connecting structure and restraining their movement so that the connection between the operating rod 12 and the tip tool 14 does not become disengaged.

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

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

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

[0091] The connecting part 24 (on the operation rod side) includes a core member 44 that constitutes the first connecting part 40 and the second connecting part 42 in this embodiment. The core member 44 is in the shape of a hollow cylinder and is disposed around the operation rod attachment members ((first) operation rod attachment member 26 and (second) operation rod attachment member 28).

[0092] In this embodiment, the core member 44 forms a first connecting part 40 which is a columnar part thinner than the operation rod main body 20 so that the hand side is attached to the operation rod main body 20, and the tip side forms a second connecting part 42 which is a thick columnar part formed thicker than the thin first connecting part 40 on the hand side.

[0093] The core member 44 has a hollow annular hollow part 46 bored in the longitudinal direction. In the approximate center of the hollow part 46, an elongated constricted first hollow part 46a is formed, and on the tip side of the first hollow part 46a, a relatively thick second hollow part 46b having a diameter longer than that of the first hollow part 46a is formed. Furthermore, in the hollow part 46 on the hand side of the first hollow part 46a, a relatively thick third hollow part 46c having a diameter longer than that of the first hollow part 46a is formed.

[0094] An operation rod attachment member ((first) operation rod attachment member 26) for attaching to the operation rod main body 20 is disposed in the third hollow part 46c of the hollow part 46 of the core member 44. The operation rod attachment member ((first) operation rod attachment member 26) is fixed to the tip of the operation rod main body 20, and the third hollow part 46c of the core member 44 is fitted and attached around the (first) operation rod attachment member 26. (Second) operation rod attachment member 28 is inserted into the hollow part 46, with its hand side located in the third hollow part 4 6c, and its tip side is slidably fitted into the first hollow part 46a, , further and its tip side extends into the second hollow part 46b and is connected to a columnar core member attachment part 96. In this embodiment, the (second) operating rod attachment member 28 is a cylindrical rod body, having a head portion with a larger diameter at the hand-held side than that of the first hollow portion 46a, and a rod-shaped body with a diameter substantially the same as that of the first hollow portion 46a at its tip side. Therefore, the second hollow portion 46b is configured to leave a hollow portion between it and the (second) operating rod attachment member 28 so that a second elastic member can be fitted therein.

[0095] On one of the connecting portions on the rod body side and the connecting portion on the connected portion side, a convex portion 62c is formed, and on the other, a concave portion 92a is formed. The convex portion 62c and the concave portion 92a are configured to be combined and connected.

[0096] The fixing means 16 is constituted by a first fixing convex portion (pin) 60 formed on the connecting portion on the rod body side and constituting a separation preventing means. The fixing means formed on the second connecting member 80 or the fixing means formed on the core member 44 is constituted by a fixing groove formed at a corresponding position in the core member 44 and / or the second connecting member 80 and constituting a bent separation preventing means.

[0097] In this embodiment, the core member 44 has a first fixing convex portion (pin) 60 constituting the fixing means 16 attached to the side of the second connecting portion 42. Note that an elastic member 70 constituting the restraining means 18 may be interposed around the first connecting portion 40 side.

[0098] The connecting portion 24 (on the operating rod side) has the first connecting member 50 disposed therein. In this second embodiment, the connecting portion 24 (on the operating rod side) does not have the elastic member 70 constituting the restraining means 18, but it may be disposed on the hand-held side of the core member 44. On the hand-held side of the first connecting member 50, an elastic member attachment portion 72 for stopping the tip side of the elastic member 70 is formed. Furthermore, on the side of the operating rod body 20 of the operating rod 12 facing the outer surface on the hand-held side of the first connecting member 50, an elastic member attachment portion 74 for stopping the rear end side of the elastic member 70 is formed at its tip side. When the tip tool 14 is attached to the operation rod 12, the elastic member 70 constituting the suppression means 18 may be configured to bias the first connecting member 50 toward the second connecting member 80.

[0099] The connecting portion 24 (on the operation rod side) includes a core member 44 fixed to the center at the tip of the operation rod main body 20, and the first connecting member 50 is disposed around the core member 44. Furthermore, the connecting portion 24 (on the operation rod side) is provided with a suppression means 18 constituted by an elastic member 70 such as a coil spring formed so as to elastically bounce from the base side of the operation rod 12 toward the tip tool 14 side around the core member 44 on the base side. The first connecting portion 40 is configured to form a moving space for the first connecting member 50, which will be described later, between the operation rod main body 20, and the second connecting portion 42 is provided with the first fixing convex portion (pin) 60, and a second connecting member 80 constituting the connecting portion 32 (on the tip tool side) is inserted around the first fixing convex portion (pin) 60.

[0100] The first connecting member 50 is annular and is fitted and loaded around the substantially columnar core member 44, and is configured to be screwed in the longitudinal direction of the core member 44 and the operation rod main body 20. It is configured to be elastically bounced toward the tip side by an elastic member 70 (not shown) interposed between the base side of the first connecting member 50 and the tip side of the operation rod main body 20. The first fixing convex portion (pin) 60 is formed so as to extend in the radial direction at the center of the connecting portion 24 (on the operation rod side). The first fixing convex portion (pin) 60 is formed so as to be movable in the axial direction of the operation rod 12 and rotatable in the circumferential direction of the operation rod 12 as the operation rod 12 moves relative to the tip tool 14.

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

[0102] The first fixing groove 90 has a first groove portion 90A opening to the side of the operating rod 12, a second groove portion 90B opening following the first groove portion 90A, and a third groove portion 90C opening following 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 in plan view, and is configured such that when the tip tool 14 is attached to the operating rod 12, the first fixing convex portion (pin) 60 stops in the third groove portion 90C and does not move. The first fixing groove 90 has a depth at which the head of the fitted first fixing convex portion (pin) 60 slightly protrudes and a width at which the shaft portion of the fitted first fixing convex portion (pin) 60 can move.

[0103] With the above configuration, the second connecting member 80 presses the fixing means 16 (the first fixing convex portion (pin) 60) protruding and fixed in the radial direction at the second connecting portion 42 of the first connecting portion 40 connected to the operating rod main body 20 toward the tip side (the portion to be attached) by the biasing forces of the elastic member 70 and the second elastic member 76, meshes the third groove portion 90C with the fixing means 16 (the first fixing convex portion (pin) 60), and the second connecting member 80 does not move in the unlocking direction.

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

[0105] The second connecting member 80 constitutes a mounted portion that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and includes a first connecting portion 82 that is a tip tool mounting portion attached to the (tip) tool portion 30, and a second connecting portion 84 that is thicker than the first connecting portion 82 which is the tip tool mounting portion. The first connecting portion 82 is fitted into the mounting portion of the (tip) tool portion 30 and fixed to the (tip) tool portion 30 by an appropriate fixture, such as a pin or the like. The second connecting portion 84 constitutes a hollow core member mounting portion, and a rod - side connecting portion mounting hole 94 into which the core member 44 is fitted is formed. The second connecting portion 84 is provided with a columnar core member mounting portion 96 in the rod - 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 mounted at the second connecting portion 42 of the core member 44 in series with the columnar core member mounting portion 96. The columnar core member mounting portion 96 is configured to abut against the proximal - side portion of the second connecting member 80, and a second elastic member 76, such as a coil spring, is disposed in the second hollow portion 46b existing between the proximal - side 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, so as to elastically eject the columnar core member mounting portion 96 toward the proximal - side or the tip - side. This second elastic member 76 may be omitted.

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

[0108] Furthermore, on the tip side of the columnar core member mounting portion 96, a third elastic member 98 such as a coil spring formed to elastically pop from the tip tool 14 side toward the operating rod 12 side is disposed in a recess formed in the rod-side connecting portion mounting hole 94 of the second connecting member 80. The third elastic member 98 may be fixed to the tip side of the columnar core member mounting portion 96, or may be fitted and fixed in a recess 32a formed at the center of the connecting portion 32 (on the tip tool side).

[0109] The third elastic member 98 constituting the restraining means 18 presses the second connecting member 80 toward the tip side during locking. (Type 2)

[0110] The first connecting member 50 is disposed on the operating rod 12 so as to be movable in the axial direction of the operating rod 12. When the tip tool 14 is attached to the operating rod 12, it is fixed to the region 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 out of the first fixing groove 90 of the second connecting member 80. The first connecting member 50 has 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 screw portion 48 provided on the outer peripheral portion of the region where the first connecting member 50 is loaded and the first connecting member 50 is interposed. On the other hand, the fixing means 16 of the first connecting member 50 is constituted by a female screw portion 58 provided in the cylinder of the region interposed in the core member 44. The female screw portion 58 constituting the fixing means 16 of the first connecting member 50 is screwed into the male screw 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 stopped at a position suitable for pressing the second connecting member 80 by the first connecting member 50.

[0112]

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

[0113] Next, regarding the operation method, assuming that the insulating operating rod 12 provided with the connection structure 10 according to the embodiment is used to form an overhead distribution line bypass circuit, the tip tool 14 for indirect live working connected to the tip thereof by the insulating operating rod 12 is operated, and the following description will be given. First, as shown in FIGS. 10 and 11, in order for an operator to attach the tip tool 14 for indirect live working to the tip of the insulating operating rod 12, the connecting portion 24 (on the operating rod side) of the insulating operating rod 12 constituting the connection structure 10 is connected to the connecting portion 32 (on the tip tool side) of the tip tool 14.

[0113] Specifically, the axis of the connecting portion 24 (on the operating rod side) of the operating rod 12 is aligned with the axis of the connecting portion 32 (on the tip tool side) of the tip tool 14, 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 side, and the first fixing convex portion (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 in the circumferential direction, and the first fixing convex portion (pin) 60 is advanced along the groove of the second groove portion 90B toward the third groove portion 90C. When the connection structure 10 reaches the groove opening of the third groove portion 90C, that is, when it reaches the dead end of the second groove portion 90B, pull the operating rod 12 back from the tip tool 14 side toward the hand side, and fit the first fixing convex portion (pin) 60 into the third groove portion 90C. Therefore, by turning the first connecting member 50, the first connecting member 50 is moved in the longitudinal direction of the operating rod 12 by the action of the male screw portion 48 of the first connecting member 50 and the female screw portion 58 of the core member 44, and is moved to a position where the second connecting member 80 is pressed by the first connecting member 50, so that 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 are firmly connected.

[0114] Next, regarding the unlocking of the lock between the connecting portion 24 (on the operating rod side) of the operating rod main body 20 and the connecting portion 32 (on the tip tool side) of the tool portion (tip tool portion) 30 in the connection structure 10, it will be mainly described with reference to FIG. 11. At that time, turn the first connecting member 50 to disengage the male screw portion 48 and the female screw portion 58 and move it toward the hand side. Then, move the connecting portion 24 (on the operating rod side) of the operating rod main body 20 toward the tip side (push the first connecting member 50 toward the hand side with the second connecting member 80), remove the first fixing convex portion (pin) 60 constituting the fixing means 16 from the third groove portion 90C, turn the operating rod 12 and move the first fixing convex portion (pin) 60 along the second groove portion 90B. When it is located in the first groove portion 90A of the first fixing groove 90, move the operating rod 12 toward the hand side and 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 tip tool side) of the tip tool 14 can be separated.

[0115] (Third Embodiment)

[0116] Next, a connection structure according to a third embodiment, which is a modification of the first embodiment, will be mainly described with reference to FIGS. 16 to 21. Note that, as a modification of the first embodiment, the first 3In the description of the connection structure according to the embodiment, for the common constituent elements and components that are the same as those of the connection structure 10 according to the first embodiment illustrated in FIGS. 1 to 9, the same reference numerals will be given, and the description of the common constituent elements and components will be omitted. Hereinafter, the description will focus on the characteristic constituent elements and components of the connection structure, which is a modification of the first embodiment.

[0117] The connection structure 10 according to the third embodiment of the present invention is a connection structure that connects an operating rod 12 constituting a rod body and a connection portion of a tip tool 14 constituting a connected portion connected to the operating rod 12.

[0118] The operating rod 12 includes a long cylindrical operating rod main body 20, a gripping portion 22 attached to the rear end, that is, the front side of the operating rod main body 20, and a (operating rod side) connection portion 24 formed in the region on the front end side of the operating rod main body 20, that is, the side attached to the tip tool 14.

[0119] The tip tool 14 such as a tool for live-line work is composed of, for example, a wire stripper for stripping the insulating coating of an overhead distribution line in a live state, a yatco, a locking tool, and the like. The tip tool 14 includes a tool portion 30 that directly contacts an electric wire or the like, and a (tip tool side) connection portion 32 that forms a connected portion and is formed in the region where the tool portion 30 is connected to the operating rod 12.

[0120] The connection portion 24 on the side of the operating rod 12 which is a rod body and the connection portion 32 on the connected portion side are arranged in parallel with the center line extending in the axial direction of the rod body being concentric. A convex portion is formed on one side, and a concave portion is formed on the other side, and the convex portion and the concave portion are configured to be combined and connected. In this embodiment, a core member 44 that forms a convex portion is formed in the connection portion 24 (on the operating rod side), and a rod body side connection portion attachment hole 94 that forms a concave portion is formed in the connection portion 32 (on the tip tool side). The core member 44 is a rod-shaped body with a substantially circular cross-section, and the rod-side connection part attachment hole 94 is an annular body with a substantially circular cross-section. They are arranged in parallel with the center line extending in the axial direction of the rod body being concentric. The core member 44 is combined with the rod-side connection part attachment hole 94 so that the connection part 24 on the side of the operating rod 12 and the connection part 32 on the side of the connected part are connected.

[0121] In the region of the operating rod 12 on the side connected to the tip tool 14, there is provided a fixing means 16 that constitutes a separation prevention means for preventing the separation of the connected parts connected by a connection structure that fixes the tip tool 14. Furthermore, in the region of the operating rod 12 on the side connected to the tip tool 14, there is provided a restraining means 18 that constitutes a separation prevention means for preventing the separation of the connected parts connected by a connection structure and restraining their movement so that the connection between the operating rod 12 and the tip tool 14 does not become disconnected.

[0122] The connection part 24 of the operating rod 12 that constitutes the connection part of the rod body is formed on the side where the first connection part 40 thinner than the operating rod main body 20 is connected to the operating rod main body 20, and a second connection part 42 thicker than the first connection part 40 is continuously provided on the tip tool 14 side of the first connection part 40. It is constituted by the core member 44 and the like.

[0123] The core member 44 that constitutes the connection part 24 (on the side of the operating rod) of the operating rod main body 20 is connected to the operating rod main body 20 by an operating rod attachment member ((first) operating rod attachment member 26 and fixing pins 26a and 26b).

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

[0125] The connecting part 24 (on the operation rod side) includes a core member 44 that constitutes the first connecting part 40 and the second connecting part 42 in this embodiment. The core member 44 is in a hollow cylindrical shape and is disposed around the operation rod attachment members ((first) operation rod attachment member 26 and (second) operation rod attachment member 28).

[0126] In this embodiment, the core member 44 constitutes a first connecting part 40 formed as a cylindrical part thinner than the operation rod main body 20 so that the hand side is attached to the operation rod main body 20, and the tip side constitutes a second connecting part 42 formed as a thick cylindrical part thicker than the thin first connecting part 40 on the hand side.

[0127] The core member 44 has a hollow annular hollow part 46 bored in the longitudinal direction. In the approximate center of the hollow part 46, an elongated constricted first hollow part 46a is formed, and on the tip side of the first hollow part 46a, a relatively thick second hollow part 46b having a diameter longer than that of the first hollow part 46a is formed. Furthermore, in the hollow part 46 on the hand side of the first hollow part 46a, a relatively thick third hollow part 46c having a diameter longer than that of the first hollow part 46a is formed.

[0128] An operation rod attachment member ((first) operation rod attachment member 26) for attaching to the operation rod main body 20 is disposed in the third hollow part 46c of the hollow part 46 of the core member 44. The operation rod attachment member ((first) operation rod attachment member 26) is fixed to the tip of the operation rod main body 20, and the third hollow part 46c of the core member 44 is fitted and attached around the (first) operation rod attachment member 26. The (second) operation rod attachment member 28 is inserted into the hollow part 46, the hand side thereof is located in the third hollow part 46c, the tip side thereof is slidably fitted into the first hollow part 46a, and further, the tip side thereof extends into the second hollow part 46b and is connected to a columnar core member attachment part 96. In this embodiment, the (second) operating rod attachment member 28 is a columnar rod body, having a head portion with a larger diameter at the hand side than that of the first hollow portion 46a, and a rod-like body with a diameter substantially the same as that of the first hollow portion 46a at its tip side. Therefore, the second hollow portion 46b is configured to leave a hollow portion between it and the (second) operating rod attachment member 28 so that the third elastic member 98 can be fitted therein.

[0129] In this embodiment, the core member 44 has a first fixing convex portion (pin) 60 that constitutes the fixing means 16 attached to the side of the second connecting portion 42. Note that an elastic member 70 that constitutes the restraining means 18 may be interposed around the first connecting portion 40 side.

[0130] The connecting portion 24 (on the operating rod side) includes 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 disposed around the core member 44. Furthermore, the core member 44 does not have a restraining means 18 constituted by an elastic member 70 such as a coil spring formed to elastically move from the hand side of the operating rod 12 toward the tip tool 14 side around it at its hand side, but it may be disposed at the hand side of the core member 44.

[0131] The connecting portion 24 (on the operating rod side) has a third connecting member 52 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 at the inner side of the hollow portion, its tip side is fitted into the hand side of the second connecting member 80.

[0132] The third connecting member 52 is an annular body with a circular cross-section, fixed to the inner peripheral surface of the first connecting member 50, and fitted into the second connecting portion 42 of the first connecting portion 40 so as to be in contact with the tip of the hand side 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 inserted into the second connecting portion 42 of the core member 44 and inserted into the inner peripheral surface on the hollow portion side of the first connecting member 50. The tip side of the third connecting member 52 is in contact with the edge on the near side of the second connecting portion 84 of the second connecting member 80, and is also in contact with the edge on the near side of the inner peripheral surface on the hollow portion side of the first connecting member 50, and is configured to be interposed between the edge on the near side of the second connecting portion 84 of the second connecting member 80 and the edge on the near side of the inner peripheral 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 screw portion 88 provided on the outer peripheral portion of the second connecting member 80 in the region where the first connecting member 50 is interposed in the second connecting member 80 loaded with the first connecting member 50. On the other hand, the fixing means 16 of the first connecting member 50 is constituted by a female screw portion 58 provided in the cylinder in the region where the first connecting member 50 is interposed in the second connecting member 80. The female screw portion 58 constituting the fixing means 16 of the first connecting member 50 is screwed into the male screw 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 on the operating rod side) 24 may be arranged on the near side of the core member 44 although the elastic member 70 constituting the restraining means 18 is not arranged. In this third embodiment, the second connecting portion 42 of the first connecting portion 40 is formed with an elastic member mounting portion 72 for stopping the tip side of an elastic member 70 (not shown) on the near side in the region where the first connecting member 50 is fitted. Furthermore, on the side of the operating rod main body 20 of the operating rod 12 facing the outer surface on the near side of the first connecting member 50, an elastic member mounting portion 74 for stopping the rear end side of the elastic member 70 (not shown) is formed at the tip side thereof.

[0135] The first connecting portion 40 is configured to form a movement space for the first connecting member 50, which will be described later, between the operation rod main body 20. The second connecting portion 42 is configured such that the first fixing convex portion (pin) 60 is disposed, and a second connecting member 80 that forms a connecting portion 32 (on the tip tool side) is inserted around the first fixing convex portion (pin) 60.

[0136] The first connecting member 50 is annular and is fitted and loaded around a substantially columnar core member 44. The first connecting member 50 is configured to slide in the longitudinal direction of the core member 44 and the operation rod main body 20. The first connecting member 50 may be configured to be elastically biased toward the tip side by an elastic member 70 (not shown) interposed between the hand side of the first connecting member 50 and the tip side of the operation rod main body 20. The first fixing convex portion (pin) 60 is formed so as to extend in the radial direction at the center of the connecting portion 24 (on the operation rod side). The first fixing convex portion (pin) 60 is formed so as to be movable in the axial direction of the operation rod 12 and rotatable in the circumferential direction of the operation rod 12 as the operation rod 12 moves, relative to the tip tool 14.

[0137] The connecting portion 32 (on the tip tool side) constitutes an attached portion to be attached to the operation rod 12, and a second connecting member 80 is disposed, which is formed so as to be able to connect the connecting portion 24 on the operation rod 12 side. The second connecting member 80 is formed with a first fixing groove 90 for stopping the first fixing convex portion (pin) 60 disposed at the connecting portion 24 on the operation rod 12 side in a region on the side connected to the operation rod 12. The first fixing groove 90 constitutes a fixing means 16 for fitting the first fixing convex portion (pin) 60 and fixing the first fixing convex portion (pin) 60 when the connecting portion 24 (on the operation rod side) and the connecting portion 32 (on the tip tool side) are connected.

[0138] The first fixing groove 90 has a first groove portion 90A opening to the operation rod 12 side, a second groove portion 90B opening following the first groove portion 90A, and a third groove portion 90C opening following 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 in plan view, and is configured such that when the tip tool 14 is attached to the operating rod 12, the first fixing convex portion (pin) 60 stops at the third groove portion 90C and does not move. The first fixing groove 90 has a depth at which the head of the fitted first fixing convex portion (pin) 60 slightly protrudes, and a width at which the shaft portion of the fitted first fixing convex portion (pin) 60 can move.

[0139] The first fixing convex portion (pin) 60 is provided so as to protrude in the radial direction of the first connecting member 50. The first fixing groove 90 has a depth at which the head of the fitted first fixing convex portion (pin) 60 slightly protrudes, and a width at which the shaft portion of the fitted first fixing convex portion (pin) 60 can move.

[0140] The second connecting member 80 constitutes a portion to be attached that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and includes a first connecting portion 82 that is a tip tool attachment portion attached to the (tip) tool portion 30, and a second connecting portion 84 that is thicker than the first connecting portion 82 that is the tip 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 an appropriate fixture such as a pin. The second connecting portion 84 constitutes a hollow core member attachment portion, and a rod - side connecting portion attachment hole 94 into which the core member 44 is fitted is formed. The second connecting portion 84 is provided with a columnar core member attachment portion 96 in the rod - side connecting portion attachment hole 94. The columnar core member attachment 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 attachment member 28, and is connected in contact with the tip side of the (second) operating rod attachment member 28.

[0141] (The second) operating rod attachment member 28 is attached at the second connecting portion 42 of the core member 44 in series with the columnar core member attachment portion 96. The columnar core member mounting portion 96 is configured to abut against the proximal side portion of the second connecting member 80, and a second elastic member 76 such as a coil spring is disposed in the second hollow portion 46b existing 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, so as to elastically eject the columnar core member mounting portion 96 toward the proximal side or the distal side.

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

[0143] The first connecting member 50 is disposed on the operating rod 12 so as to be movable in the axial direction of the operating rod 12. When the tip tool 14 is attached to the operating rod 12, it is fixed to the region on the operating rod 12 side of the second connecting member 80 to control the movement of the second connecting member 80, so that the (operating rod side) connecting portion 24 does not come off from the first fixing groove 90 of the second connecting member 80. The first connecting member 50 has 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 projection (pin) 60 constituting the fixing means 16 when the tip tool 14 is attached to the operating rod 12, and is configured to enclose the second connecting portion 84 of the second connecting member 80 and the third connecting member 52 in its hollow portion.

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

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

[0147] Next, regarding the operation method, assuming that an insulating operation rod 12 provided with the connection structure 10 according to the embodiment is used to form an overhead distribution line bypass circuit, the following description will be given based on the operation of the tip tool 14 for indirect live wire connection connected to the tip thereof by the insulating operation rod 12. First, as shown in FIGS. 16 and 17, in order for an operator to attach the tip tool 14 for indirect live wire work to the tip of the insulating operation rod 12, the connecting portion 24 (on the operation rod side) of the insulating operation rod 12 constituting the connection structure 10 is connected to the connecting portion 32 (on the tip tool side) of the tip tool 14. Specifically, the axis of the connecting portion 24 (on the operation rod side) on the operation rod 12 side is aligned with the axis of the connecting portion 32 (on the tip tool side) on the tip tool 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 operation rod 12 is moved toward the tip tool 14 side, and the first fixing convex portion (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 operation rod 12 is rotated in the circumferential direction, and the first fixing convex portion (pin) 60 is advanced along the groove of the second groove portion 90B toward the third groove portion 90C. When the connection structure 10 reaches the groove opening of the third groove portion 90C, that is, 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 hand side, and the first fixing convex portion (pin) 60 is fitted into the third groove portion 90C. Therefore, by turning the first connecting member 50, the first connecting member 50 is moved in the longitudinal direction of the operating rod 12 by the action of the female screw portion 58 of the first connecting member 50 and the male screw portion 88 of the second connecting member 80, and is moved to a position where the second connecting member 80 is pressed by the third connecting member 52, so that 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 are firmly connected.

[0148] Next, regarding the unlocking of the lock between the connecting portion 24 (on the operating rod side) of the operating rod main body 20 and the connecting portion 32 (on the tip tool side) of the tool portion (tip tool portion) 30 in the connection structure 10, it will be mainly described with reference to FIG. 17. At that time, the first connecting member 50 is turned and moved toward the hand side, the connecting portion 24 (on the operating rod side) of the operating rod main body 20 is moved toward the tip side, and the first fixing convex portion (pin) 60 constituting the fixing means 16 is removed from the third groove portion 90C. The operating rod 12 is turned and the first fixing convex portion (pin) 60 is moved 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 and the first fixing convex portion (pin) 60 is removed 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 tip tool side) of the tip tool 14 can be separated.

[0149] (Fourth Embodiment)

[0150] Next, the connection structure according to the fourth embodiment will be mainly described with reference to FIGS. 22 to 33. Regarding the constituent elements common to the connection structure 10 shown in FIGS. 1 to 9, which is the first embodiment, the same reference numerals will be given and the description of the common constituent elements will be omitted. Hereinafter, the description will focus on the characteristic constituent elements of the connection structure of the fourth embodiment.

[0151] The connection structure 10 according to the fourth embodiment of the present invention is a connection structure that connects an operating rod 12 constituting a rod body and a connection portion of a tip tool 14 constituting a connected portion connected to the operating rod 12.

[0152] The operating rod 12 includes a long cylindrical operating rod main body 20, a gripping portion 22 attached to the rear end, i.e., the front side, of the operating rod main body 20, and a (operating rod side) connection portion 24 formed in a region on the front end side, i.e., the side attached to the tip tool 14, of the operating rod main body 20.

[0153] The tip tool 14 such as a tool for live-line work is composed of, for example, a wire stripper for stripping the insulating coating of an overhead distribution line in a live state, a yatco, a locking tool, etc. The tip tool 14 includes a tool portion 30 that directly contacts an electric wire or the like, and a (tip tool side) connection portion 32 that forms a connected portion and is formed in a region where the tool portion 30 is connected to the operating rod 12.

[0154] The connection portion 24 on the side of the operating rod 12 which is a rod body and the connection portion 32 on the connected portion side are arranged in parallel with the center line extending in the axial direction of the rod body being concentric. A convex portion is formed on one side and a concave portion is formed on the other side, and the convex portion and the concave portion are configured to be combined and connected. In this embodiment, a core member 44 that forms a convex portion is formed in the connection portion 24, and a rod body side connection portion attachment hole 94 that forms a concave portion is formed in the connection portion 32. The core member 44 is a rod-shaped body with a substantially circular cross-section, and the rod body side connection portion attachment hole 94 is an annular body with a substantially circular cross-section. They are arranged in parallel with the center line extending in the axial direction of the rod body being concentric. The core member 44 is combined with the rod body side connection portion attachment hole 94 so that the connection portion 24 on the side of the operating rod 12 and the connection portion 32 on the connected portion side are connected.

[0155] In the region on the side of the operating rod 12 where it is connected to the tip tool 14, fixing means 16 is provided which constitutes separation prevention means for preventing the separation of the connected components fixed by the connection structure. Furthermore, the operation rod 12 is connected by a connection structure that suppresses the movement of the operation rod 12 and the tip tool 14 so that the connection between the operation rod 12 and the tip tool 14 does not become disconnected in the region on the side connected to the tip tool 14, and a suppression means 18 that constitutes a separation prevention means for preventing separation of the connected parts is provided.

[0156] The connecting portion 24 of the operation rod 12 that constitutes the connecting portion of the rod body is formed on the side where the first connecting portion 40 thinner than the operation rod main body 20 is connected to the operation rod main body 20, and on the tip tool 14 side of the first connecting portion 40, a second connecting portion 42 thicker than the first connecting portion 40 is continuously provided, and is constituted by a core member 44 or the like.

[0157] The core member 44 that constitutes the connecting portion 24 (on the operation rod side) of the operation rod main body 20 is connected to the operation rod main body 20 by an operation rod attachment member ((first) operation rod attachment member 26 and fixing pins 26a and 26b). (The first) operation rod attachment member 26 is a bottomed annular body, and is configured to be fitted into the recessed portion 20a of the operation rod main body 20 and directly connected by appropriate fixing means, for example, fixing pins 26a and 26b.

[0158] (The connecting portion on the operation rod side) 24 includes 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 formed in the center of the operation rod attachment member ((first) operation rod attachment member 26), and is connected by the connecting screw 26c. In this embodiment, the (first) operation rod attachment member 26 is screwed to the proximal side of the core member 44 by a connecting screw 26c by inserting the connecting screw 26c for connecting the (first) operation rod attachment member 26 and the core member 44 from its proximal side, and is connected to the (first) operation rod attachment member 26. The core member 44 is attached to the operation rod main body 20 via the (first) operation rod attachment member 26.

[0159] (The connecting portion on the operation rod side) 24 is provided with an elastic member 70 that constitutes the suppression means 18. In this embodiment, the core member 44 is provided, at its first connecting portion 40, with a restraining means 18 composed of an elastic member 70 such as a coil spring formed so as to elastically project from the proximal side of the operating rod 12 toward the distal tool 14 side around it.

[0160] In this embodiment, the core member 44 has, at its proximal side, a first connecting portion 40 formed as a columnar portion thinner than the operating rod main body 20 so as to be attached to the operating rod main body 20, and at its distal side, a second connecting portion 42 formed as a thick columnar portion thicker than the thin first connecting portion 40 at the proximal side. In this embodiment, as shown in FIG. 28, the core member 44 is formed with the first connecting portion 40 and the second connecting portion 42 as separate members and is connected by a pin as appropriate. 44a to be connected.

[0161] The core member 44 has a first fixing convex portion (pin) 60 constituting the fixing means 16 attached to the second connecting portion 42 at the distal side, and an elastic member 70 constituting the restraining means 18 interposed around the first connecting portion 40 at the proximal side. Furthermore, in this embodiment, the core member 44 has a second fixing groove 92 formed in the second connecting portion 42 for guiding and fixing a second fixing convex portion (plunger) 62, which will be described later, in the longitudinal direction and the radial direction of the operating rod 12.

[0162] The connecting portion 24 (on the operating rod side) is provided with a first connecting member 50. The first connecting member 50 is an annular body with a circular cross-section, and at the inner side of the hollow portion, its distal side is fitted into the second connecting portion 42 of the first connecting portion 40. The connecting portion 24 (on the operating rod side) in this embodiment includes a core member 44 fixed at its center at the distal end of the operating rod main body 20, and a first connecting member 50 is disposed around the core member 44.

[0163] On the near side of the region where the first connecting member 50 is fitted into the first connecting portion 40, an elastic member mounting portion 72 for stopping the distal end side of the elastic member 70 is formed. Furthermore, on the side of the operating rod body 20 of the operating rod 12 facing the outer surface on the near side of the first connecting member 50, an elastic member mounting portion 74 for stopping the rear end side of the elastic member 70 is formed at the distal end side thereof. The first connecting member 50 is installed across between the elastic member mounting portion 72 and the elastic member mounting portion 74 so as to surround the elastic member 70 interposed in the core member 44 of the first connecting portion 40, and the distal end side thereof is attached to the second connecting portion 42 so as to surround the outer peripheral surface of the second connecting portion 42.

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

[0165] On one of the connecting portion on the rod body side and the connecting portion on the connected portion side, a first fixing convex portion 60 which is a fixing means 16 constituting a convex portion is formed, and on the other, a first fixing groove 90 which is a fixing means 16 constituting a concave portion is formed, and the convex portion and the concave portion are configured to be combined and connected.

[0166] The fixing means 16 is constituted by a first fixing convex portion (pin) 60 formed on the connecting portion on the rod body side and constituting a separation prevention means. 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 rod body side and constituting a separation prevention means. 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 formed at a corresponding position in the core member 44 and / or the second connecting member 80 and constituting a bent separation prevention means.

[0167] The first connecting portion 40 of the core member 44 is configured to form a moving space for the first connecting member 50, which will be described later, between the operating rod main body 20. The second connecting portion 42 of the core member 44 has the first fixing convex portion (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 the second fixing convex portion (plunger) 62, which will be described later.

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

[0169] The second fixing groove 92 has a first groove portion 92A opening to the operating rod 12 side, a second groove portion 92B opening following the first groove portion 92A, and a third groove portion 92C opening following 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 in plan view. When the tip tool 14 is attached to the operating rod 12, when the first connecting member 50 is rotated, the second fixing convex portion (plunger) 62 abuts against the third groove portion 92C, and the first connecting member 50 is configured not to move. The second fixing groove 92 has a depth at which the head of the fitted second fixing convex portion (plunger) 62 slightly protrudes and a width at which the shaft portion of the fitted second fixing convex portion (plunger) 62 can move.

[0170] As shown in FIG. 24, the second fixing convex portion (plunger) 62 includes a cylindrical main body 62a, a biasing body 62b such as a spring loaded inside the cylinder of the cylindrical main body 62a, and a ball-shaped convex portion 62c with its head protruding from the lower end of the cylindrical main body 62a by the biasing body 62b. The second fixed convex part (plunger) 62 is provided so as to protrude in the radial direction of the first connecting member 50. The second fixed groove 92 includes a recess 92a with a depth into which the convex part 62c of the fitted second fixed convex part (plunger) 62 slightly fits, and a movement path 92b on a plane having a width through which the cylindrical main body 62a and the convex part 62c of the fitted second fixed convex part (plunger) 62 can move. The second fixed convex part (plunger) 62 is configured to move along the movement path 92b in the groove of the second fixed groove 92, fit into the concave recess 92a, and control the movement of the first connecting member 50. As shown in FIG. 24, in the second fixed groove 92, the recess 92a is provided in the second groove part 92B and the third groove part 92C.

[0171] The first connecting member 50 is annular and is fitted and loaded around the substantially columnar core member 44. It is configured to be movable in the longitudinal direction of the core member 44 and the operation rod main body 20, and is configured to be elastically biased toward the distal end side by an elastic member 70 interposed between the proximal end side of the first connecting member 50 and the distal end side of the operation rod main body 20. The first connecting member 50 has a hole 50a for fixing the second fixed convex part (plunger) 62 formed at the distal end side, and the second fixed convex part (plunger) 62 constituting the fixing means 16 is fitted and fixed in the hole 50a.

[0172] The connecting part 32 (on the tip tool side) constitutes an attached part to be attached to the operation rod 12, and a second connecting member 80 is disposed which is formed so as to be able to connect the connecting part 24 on the operation rod 12 side. The second connecting member 80 has a first fixed groove 90 formed in a region on the side connected to the operation rod 12 to stop the first fixed convex part (pin) 60 disposed at the connecting part 24 on the operation rod 12 side. The first fixed groove 90 constitutes a fixing means 16 that fits the first fixed convex part (pin) 60 and fixes the first fixed convex part (pin) 60 when the connecting part 24 (on the operation rod side) and the connecting part 32 (on the tip tool side) are connected.

[0173] The first fixing groove 90 has a first groove portion 90A that opens toward the operating rod 12 side, a second groove portion 90B that opens following the first groove portion 90A, and a third groove portion 90C that opens following 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 in plan view, and when the tip tool 14 is attached to the operating rod 12, the first fixing convex portion (pin) 60 is configured to stop in the third groove portion 90C and not move. The first fixing groove 90 has a depth at which the head of the fitted first fixing convex portion (pin) 60 slightly protrudes, and a width at which the shaft portion of the fitted first fixing convex portion (pin) 60 can move.

[0174] The first fixing convex portion (pin) 60 is provided to protrude in the radial direction of the second connecting portion 42 of the core member 44. The first fixing groove 90 has a depth at which the head of the fitted first fixing convex portion (pin) 60 slightly protrudes, and a width at which the shaft portion of the fitted first fixing convex portion (pin) 60 can move. The first fixing convex portion (pin) 60 is configured to move in the groove of 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 a mounting portion that is attached to the (tip) tool portion 30 and connected to the operating rod 12, and includes a first connecting portion 82 that is a tip tool attachment portion attached to the (tip) tool portion 30, and a second connecting portion 84 that is thicker than the first connecting portion 82 that is the tip tool attachment portion. The first connecting portion 82 is fitted into the attachment portion of the (tip) tool portion 30 and fixed to the (tip) tool portion 30 by an appropriate fixture such as a pin. The second connecting portion 84 constitutes a hollow core member attachment portion, and a rod - side connecting portion attachment hole 94 that is fitted onto the core member 44 is formed. Furthermore, following the opening edge portion of the rod - side connecting portion attachment hole 94, the first fixing groove 90 is formed.

[0176] The first connecting member 50 is disposed on the side of the operating rod 12 so as to be movable in the axial direction of the operating rod 12. When the tip tool 14 is attached to the operating rod 12, it is fixed to the region of the second connecting member 80 on the side of the operating rod 12 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 from the first fixing groove 90 of the second connecting member 80. Furthermore, the first connecting member 50 has 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 above-described second fixing convex portion (plunger) 62.

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

[0178] Next, regarding the operation method, assuming that an insulating operating rod 12 provided with the connecting structure 10 according to the fourth embodiment is used to form an overhead distribution line bypass circuit, the tip tool 14 for indirect live working connected to the tip thereof by the insulating operating rod 12 is operated, and the following description will be given. First, as shown in FIG. 32, in order for an operator to attach the tip tool 14 for indirect live working to the tip portion of the operating rod 12, the connecting portion 24 (on the operating rod side) of the operating rod 12 constituting the connecting structure 10 is connected to the connecting portion 32 (on the tip tool side) of the tip tool 14. Specifically, the axis of the connecting portion 24 on the operation rod 12 side is aligned with the axis of the connecting portion 32 on the tip tool 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, move the operation rod 12 toward the tip tool 14 side, insert the first fixing convex portion (pin) 60 into the second groove portion 90B of the first fixing groove 90, and when it reaches the groove wall on the tip tool 14 side of the second groove portion 90B, turn the operation rod 12 in the circumferential direction and advance the first fixing convex portion (pin) 60 along the groove of the second groove portion 90B toward the third groove portion 90C. When the connecting structure 10 reaches the groove opening of the third groove portion 90C, that is, when it reaches the dead end of the second groove portion 90B, pull the operation rod 12 back from the tip tool 14 side toward the hand side, and fit the first fixing convex portion (pin) 60 into the third groove portion 90C.

[0179] When fixing the first connecting member 50 to the second connecting portion 42, as shown in FIG. 32(B), 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, move the first connecting member 50 in the longitudinal direction of the operation rod 12, move the first connecting member 50 to a position where it presses the second connecting member 80 by the first connecting member 50, connect the first connecting member 50 and the second connecting portion 42, and firmly connect the connecting portion 24 (on the operation rod side) of the operation 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 is aligned with the axis of the second connecting portion 42, and the second fixing convex portion (plunger) 62 is aligned with the first groove portion 92A of the second fixing groove 92. Next, move the first connecting member 50 toward the tip tool 14 side, insert the second fixing convex portion (plunger) 62 into the second groove portion 92B of the second fixing groove 92, and when it reaches the groove wall on the tip tool 14 side of the second fixing groove 92, turn the first connecting member 50 in the circumferential direction and advance the second fixing convex portion (plunger) 62 along the groove of the second groove portion 92B toward the third groove portion 92C. The second fixing convex portion (plunger) 62 is the third groove portion 9 2When reaching the groove opening of C, that is, when reaching the dead end of the second groove portion 92B, the second fixing convex portion (plunger) 62 is fitted into the third groove portion 92C. In this way, by turning the first connecting member 50, due to the action of the second fixing convex portion (plunger) 62 of the first connecting member 50 and the second fixing groove 92 of the second connecting portion 42, the first connecting member 50 is moved to the position where it presses the second connecting member 80, and the first connecting member 50 is connected to the second connecting portion 42 of the core member 44.

[0180] Regarding the unlocking of the lock between the connecting portion 24 (on the operating rod side) of the operating rod main body 20 and the connecting portion 32 (on the tip tool side) of the tool portion (tip tool portion) in the connecting structure 10, it will be mainly described with reference to FIG. 33. The first connecting member 50 is turned and moved to the position of the second groove portion 92B and temporarily fixed. Then, the connecting portion 24 (on the operating rod side) of the operating rod main body 20 is moved to the tip side, and as the first connecting member 50 moves, the second connecting member 80 is pushed toward the hand side, and the first fixing convex portion (pin) 60 constituting the fixing means 16 is removed from the third groove portion 90C. The operating rod 12 is turned and the first fixing convex portion (pin) 60 is moved along the second groove portion 90B. When it is located 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, whereby 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 can be separated.

[0181] (Modifications of the First to Third Embodiments) The modifications of the first to third embodiments will be described below with reference to FIGS. 36 to 38. In this modification, the connecting structure 10 is formed not at a position close to the tip tool 14 having the connected portion but at a position close to the hand side of the rod body.

[0182] The connecting structure 10 of the modification example is for connecting the rod body on the hand side and the rod body on the tip side among the rod bodies divided into two, and is formed so as to connect the first operating rod body 12A to which the tip tool 14 constituting the operating rod 12 is connected and the second operating rod body 12B constituting the operating rod 12 on the hand side. The first operating rod body 12A constitutes a connecting portion, and a connected portion is formed on the tip side thereof. The second operating rod body 12B constitutes a rod body, and a connecting portion is formed at the rear end thereof.

[0183] In the modification example of the first embodiment, the operating rod 12 includes a long cylindrical operating rod main body 20 that constitutes the first operating rod body 12A, and a grip portion 22 that constitutes the second operating rod body 12B and is attached to the rear end, that is, the front side of the operating rod main body 20. The operating rod main body 20 has the tip tool 14 attached to the tip side thereof, and includes a connecting portion 24 (on the operating rod side) that constitutes a connected portion in a region on the rear end side thereof.

[0184] As described above, the embodiments of the present invention are disclosed in the above description, but the present invention is not limited thereto. That is, various changes can be made to the embodiments described above with respect to the mechanism, shape, material, quantity, position, or 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 connected portion side are formed so as to be concentric with the center line extending in the axial direction of the rod body, arranged in parallel, and combined. A convex portion is formed on one connecting portion 24, and a concave portion is formed on the other connecting portion 32. However, for example, a rod body side connecting portion attachment hole 94 that constitutes a concave portion may be formed in the connecting portion 24 (on the operating rod side), and for example, a core member 44 that constitutes a convex portion may be formed in the connecting portion 32 (on the tip tool side).

Industrial Applicability

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

Description of Symbols

[0186] 10-link structure 12 operating rod 12A First operating rod body 12B Second operating rod body 14 tip tool 16 fixing means 18 restraining means 20 operating rod body 20a recessed portion 22 gripping portion 24 connecting portion (on the operating rod side) 26 (First) operating rod attachment member 26a fixing pin 26b fixing pin 26c connecting screw 26d mounting hole 28 (Second) operating rod attachment member 28a retaining screw 30 tool portion (tip tool portion) 32 connecting portion (on the tip tool side) 32a recessed portion 40 First connecting portion 42 Second connecting portion 42a recessed portion 44 core member 46 hollow portion 46a First hollow portion 46b Second hollow portion 46c Third hollow portion 48 male screw portion 50 First connecting member 50a hole 50E tip surface 52 Third connecting member 58 female screw portion 60 First fixing projection (pin) 62 Second fixing projection (plunger) 62a cylindrical body 62b biasing body 62c projection 64 fixture 70 resilient member 72 Elastic member mounting part 74 Elastic member mounting part 76 Second elastic member 80 Second connecting member 80E Rear end face 82 First connecting part 84 Second connecting part 88 Male screw part 90 First fixing groove 90A First groove part 90B Second groove part 90C Third groove part 92 Second fixing groove 92a Concave part 92b Movement path 92A First groove part 92B Second groove part 92C Third groove part 94 Rod-side connecting part mounting hole 96 Columnar core member mounting part 98 Third elastic member

Claims

【Claim 1】 A connecting structure capable of achieving a locked state by connecting a rod-shaped body and a connected part connected to the rod-shaped body, a core member configured such that a connecting part on the rod-shaped body side and a connecting part on the connected part side are connected, a first connecting member disposed on the rod-shaped body side so as to be movable in the axial direction of the rod-shaped body in a region on the rod-shaped body side, and a second connecting member disposed in a region on the connected part side, wherein the first connecting member is annular and is fitted and loaded around the core member, the second connecting member is formed with a connecting part mounting hole into which the core member is inserted, the core member is combined with the connecting part mounting hole so that the connecting part on the rod-shaped body side and the connecting part on the connected part side are connected, the first connecting member and the second connecting member are configured to be pressed toward the tip side in the locked state by a first elastic member interposed between the hand side of the first connecting member and the tip side of the rod-shaped body, the core member has a shape that is inserted into a connecting part mounting hole formed in a cavity formed in a second connecting part of the second connecting member, a columnar core member mounting part is provided in the connecting part mounting hole, the columnar core member mounting part is configured to abut against a part on the hand side of the second connecting member, the core member has a hollow annular hollow part drilled in the longitudinal direction, in the hollow part, a first hollow part that is elongated and constricted is formed at the center, and a second hollow part is formed on the tip side of the first hollow part, a second elastic member is disposed in the second hollow part existing between the end on the hand side of the columnar core member mounting part and the boundary wall part of the first hollow part of the hollow part, the second elastic member is configured to contract the columnar core member mounting part and the second connecting part and push them toward the tip side when locked, and to be in a slightly contracted state in the locked state, and to further contract when the second connecting member is pulled toward the hand side during the unlocking operation, the core member is provided with a male screw part constituting a fixing means on the outer peripheral part of the region where the first connecting member is interposed, the first connecting member is provided with a female screw part constituting a fixing means in the cylinder of the region where the core member is interposed, and the fixing means of the first connecting member is screwed to the fixing means of the core member so that the first connecting member can be moved by turning the first connecting member and stopped at a position suitable for pressing the second connecting member by the first connecting member, the rod-shaped body is provided with a fixing means constituting a separation prevention means for preventing separation of the connected parts connected by the connecting structure in a region on the connected part side connected to the rod-shaped body, The second connecting member is formed with fixing means for stopping the fixing means on the rod body side in a region on the connected part side connected to the rod body. When the connected part is connected to the rod body, the connecting part on the rod body side is fixed to the fixing means formed in the region on the first connecting member side of the second connecting member by the fixing means constituting the separation prevention means of the rod body, and the movement of the second connecting member is controlled so that the fixing means on the rod body side does not come off from the fixing means formed on the second connecting member. A connecting structure of a rod body, characterized in that it is formed as described above. **Claim 2** A connecting structure capable of achieving a locked state in which a rod body and a connected part connected to the rod body are connected, A core member configured such that a connecting part on the rod body side and a connecting part on the connected part side are connected, A first connecting member disposed on the rod body side so as to be movable in the axial direction of the rod body in a region on the rod body side, A second connecting member disposed in a region on the connected part side, The first connecting member is annular and is fitted and loaded around the core member. The second connecting member is formed with a connecting part mounting hole into which the core member is inserted. The core member is combined with the connecting part mounting hole so that the connecting part on the rod body side and the connecting part on the connected part side are connected. The first connecting member and the second connecting member are configured to be pressed toward the tip side when in the locked state by a first elastic member constituting a restraining means inserted between the hand side of the first connecting member and the tip side of the rod body. The core member has a shape that is inserted into a connecting part mounting hole formed in a cavity formed in a second connecting part of the second connecting member. A columnar core member mounting part is provided in the connecting part mounting hole. The columnar core member mounting part is configured to abut against a part on the hand side of the second connecting member. The core member has a hollow annular hollow part drilled in the longitudinal direction. In the center of the hollow part, an elongated and constricted first hollow part is formed, and a second hollow part is formed on the tip side of the first hollow part. A second elastic member constituting a restraining means is disposed in the second hollow part existing between the end on the hand side of the columnar core member mounting part and the boundary wall part of the first hollow part of the hollow part. The second elastic member is configured to contract the columnar core member mounting part and the second connecting part when locked and push them toward the tip side, and is in a slightly contracted state in the locked state, and is configured to further contract when the second connecting member is pulled toward the hand side in the unlocking operation. The core member is provided with a male screw portion that constitutes a fixing means on the outer peripheral portion of the region where the first connecting member is interposed. The first connecting member is provided with a female screw portion that constitutes a fixing means inside the cylinder of the region where the first connecting member is interposed. The fixing means of the first connecting member is configured to be screwed into the fixing means of the core member and to be moved by turning the first connecting member so as to be stopped at a position suitable for pressing the second connecting member by the first connecting member. One of the connecting portion on the rod side and the connecting portion on the connected portion side is formed with a convex portion, and the other is formed with a concave portion, and the convex portion and the concave portion are configured to be combined and connected. The first connecting member and the second connecting member are configured to be separated by the connected first connecting member and the second connecting member moving in opposite directions. The rod is provided with a restraining means that constitutes a separation preventing means for preventing the connected members from separating due to the connection structure. The restraining means is characterized in that the first connecting member is pressed toward the second connecting member side so that the convex portion and the concave portion that are engaged when connected do not separate, and is a connecting structure of the rod.

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