TW201729955A - Tip tool connection structure - Google Patents

Abstract

Provided is a tip tool connection structure with which it is possible to speedily and reliably exchange a tip tool and to satisfactorily maintain insulation properties with a simple structure even in a remote operation rod constituted by a plurality of operation rods. The tip tool connection structure 1 comprises a connector 20 at the tip of a remote operation rod 12, and a plug 7 for a tip tool 2. The plug 7 comprises an annular groove 7a and a fitting shaft 7b. The connector 20 comprises a plug receiver 22 on the tip side and a cylinder part 30 on the hand side. Locking balls 26a embedded in the housing part 26 of the plug receiver 22 are pressed in the diameter-shrinking direction by the inner protrusion 28b of an externally provided sleeve part 28. The locking balls 26a are fitted into the annular groove 7a, locking the connection state. An insertion part 18a is inserted into the remote operation rod 12, with the flange part 18a of a stopper 18 latched onto an opening edge. The cylinder part 30 is disposed so as to cover the remote operation rod 12 and the flange part 18b.

Description

Front end tool link construction

The present invention relates to a front end tool coupling structure for interchangeably connecting a front end tool for remote operation, the front end tool for remote operation being tied to a wire drawing project, and safely operating a high voltage electric wire to be applied from a remote position and Other parts.

An example of a conventional remote operation of the gripper 100 is shown in FIG. In the case of the wire-laying project, the holding side must be insulated from the work object in the case of live wire work. Therefore, the main operating bar 114 or the sub-operating bar 116 of the remote operating bar 112 is generally made of an electrically insulating FRP (fiberglass reinforced plastics) material or the like.

However, even if it is made of an insulating material, there is a possibility that an electric shock may occur when rainwater flows from the front end side toward the grip side during work in a rainy day. Therefore, as shown in FIG. 6, an umbrella-shaped rainproof member 101 is provided at a plurality of locations. Thereby, the insulation state between the front end side and the grip side is favorably maintained, and work can be performed safely.

However, in the wiring project, a plurality of tools are distinguished depending on the use such as holding or cutting. However, when using a work or the like of a work vehicle, the number of tools must be minimized due to the weight of the hand tool or the limited work space. Therefore, since the past, the replacement front end tool has been combined with the front end of the universal remote operating rod 112 to achieve weight reduction.

The remotely operated gripper 100 shown in Fig. 6 also uses the gripper pair 102 as a replacement front end tool. The pinch gripper pair 102 is detachably coupled to the main operating bar 114 and the sub-operating bar 116 by the fixed gripper 104 and the movable gripper 106, respectively.

Specifically, the concave-convex fitting portion 114a provided at the front end of the main operation bar 114 is coupled to the concave-convex fitting portion 104a on the side of the fixed gripper 104, and the pin 120 is oriented in a direction orthogonal to the concave-convex fitting direction. The connection state is fixed by punching through. Moreover, the state in which the concave-convex fitting portion 116a provided at the tip end of the sub-operating rod 116 and the concave-convex fitting portion 106a on the movable gripper 106 side are connected to each other is similarly passed through the pin 122 in a direction orthogonal to the concave-convex fitting direction. It is fixed.

Thus, due to the replaceable tool, portions of the remote operating bar 112 can be shared, and weight reduction and cost reduction can be achieved. The content of the remote operation gripper 100 configured as described above is described in Patent Document 1.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese New Patent Registration No. 3159865

However, in the configuration shown in FIG. 6, when the pair of grippers 102 is coupled to the remote operating rod 112, it is necessary to insert the plug 120 while maintaining the connection state between the main operating rod 114 and the fixed gripper 104. operation. Moreover, the same operation is required for the connection of the sub-operating rod 116 and the movable gripper 106. In this way, when the work is performed while the balance is being maintained while the work is being carried out at a high position, the parts are also dropped. Because of the possibility of falling, it is necessary to work cautiously, and the work efficiency is lowered.

Further, in the case of holding the front end tool of the clamp type 102 as shown in FIG. 6, since it is necessary to connect the two rods of the main operation rod 114 and the sub operation rod 116, at least one of them cannot be used by the shaft. A simple structure that is rotated integrally and fastened.

Further, in general, since the connection portion between the tip tool and the remote operation bar is constituted by a combination of a plurality of members, the sealing structure for raindrops or the like is complicated. Therefore, an increase in weight or an increase in cost due to an increase in the number of parts becomes a problem.

Accordingly, the present invention has been made in view of the foregoing problems, and has an object of providing a front end tool joint structure in which a front end tool can be quickly and surely replaced even if it is a remote operation rod composed of a plurality of operating rods. The simple structure can also maintain insulation well.

In order to achieve the above object, the front end tool connecting structure of the present invention is a front end tool connecting structure of a remote operating rod provided with a plug receiving member at the front end, and the plug receiving member can partially press a part of the locking ball arranged in the circumferential direction. The plug is formed in an annular groove formed on a peripheral surface of the plug of the tip tool, and the plug is locked in a connected state, and is characterized in that it is provided with a plug having a front end inserted into the distal operating rod a side insertion portion, and a crotch portion projecting radially toward an opening edge of the front end side of the remote operation bar; and a coupling member having a cover side covering the remote operation bar One of the front end sides and the tubular portion of the crotch portion have the plug receiving member on the front end side.

Moreover, in the front end tool connecting structure of the present invention, in addition to the above configuration Further, the plug receiving member includes: a socket portion into which the plug is fitted; a case portion in which the socket portion is provided, the locking ball body is arranged in a circumferential direction; and a sleeve portion that is slidably grounded On the outer peripheral surface of the casing portion, the inner sliding surface has an inner protrusion that can press the locking ball in the direction of the diameter reduction along with the sliding, and is formed in one of the end edges of the grip side. The tubular portion is provided with a hollow structure stopper pin that is inserted into the boundary between the opening edge and the crotch portion at one end, and the other end abuts against the end edge of the grip portion of the sleeve portion Alternatively, it may be placed in the above-described cutout portion so as to protrude in the diameter-expanding direction of the casing portion, and a slit extending in the longitudinal direction is formed.

Further, in the front end tool connecting structure of the present invention, in addition to the above configuration, the tip tool includes a fixed side half body having the plug at a shaft end, and a movable side half body which is slidable relative to the fixed side half a body that is coupled to each other in a clamped manner; and a connecting pin that is swingably coupled to the movable side half and has the plug on a free end side; the remote operating rod is provided with a main shaft The plug receiving member is connectable to the plug of the fixed side half body; and the operating shaft has the plug receiving member connectable to the plug of the connecting pin; and the fixed side half body and the main shaft are coupled The plug and the socket portion have a polygonal shape that is smaller than a number of faces of the plug and the socket portion that connect the movable side half body and the operation shaft.

Further, in the front end tool connecting structure of the present invention, in addition to the above configuration, the tip tool includes a fixed side half body having the plug at a shaft end, and a movable side half body which is slidable relative to the fixed side half a body that is pivotally connected in a clamped manner; and a connecting pin that is swingably coupled to the movable side half and has the plug on a free end side; the remote operating rod is provided with a main shaft have The plug receiving member coupled to the plug of the fixed side half body; and the operating shaft having the plug receiving member connectable to the plug of the connecting pin; and connecting the fixed side half body and the main shaft The plug and the socket portion are polygonal, and the plug and the socket portion that connect the movable side half body and the operation shaft are circular.

As described above, according to the present invention, since the front end of the remote operation bar is shielded by the insertion portion and the crotch portion of the plug body, and the opening edge and the crotch portion of the remote operation bar are supported by the tubular portion of the plug receiving member Since it is covered, rainwater or the like flowing along the plug receiving member or the like cannot pass around the crotch portion and enter the inside of the remote operating rod, thereby preventing an electric shock accident caused by the internal structure. Further, since the plug which is in the connected state by the locking of the ball can be locked to the plug receiving member, the replacement of the tip tool can be easily and quickly performed. In this way, both the improvement of security and the improvement of work efficiency can be achieved at the same time.

Further, according to the present invention, in addition to the above-described effects, the front end tool can be attached and detached by one touch operation by the sliding operation of the sleeve portion, and the stopper pin of the hollow structure formed with the slit in the longitudinal direction is self-contained. Since the boundary between the opening edge and the crotch portion extends toward the outer side of the casing portion, the weather can be discharged to the outside through the stopper pin of the hollow structure in the case where rain or the like intrudes into the opening edge, so that the safety is improved.

Further, according to the present invention, in addition to the above-described effects, since the fixed side half body and the movable side half body each composed of a polygonal plug have a small number of constituent faces of the polygonal plug of the fixed side half, the fixed side half body The pitch angle in the circumferential direction is large at the time of joining. Thereby, it is not easy to grasp the setting angle, and it can be easily and correctly positioned in the most appropriate direction. On the other hand, if the movable side half is fixed side The half body is first connected, and at the same time, the approximate positioning is performed. Therefore, since the movable side half body having a large number of structurally connected portions and a position which is more difficult to stabilize than the fixed side half body requires a fine positioning, the positioning of the polygonal plug having a larger number of faces than the fixed side half is more preferable. easily.

Further, according to the present invention, in addition to the above-described effects, since the fixed side half body is constituted by a polygonal plug, the position possible in the circumferential direction at the time of joining is limited by the number of faces constituting the polygonal plug, and positioning is easy. . On the other hand, since the movable side half system is constituted by a circular plug, even if the structure is difficult to stabilize at a plurality of positions, the installation angle can be smoothly connected without being restricted.

1‧‧‧ Front end tool link construction

2, 52‧‧‧ front-end tools

4, 54‧‧‧ fixed side half

5, 7, 55‧‧‧ plug

5a, 7a, 55a‧‧ ‧ annular groove

5b, 7b, 55b‧‧‧ fitting shaft

8, 58‧‧‧ movable side half

10‧‧‧ Connection pin

10a‧‧‧Free end

12‧‧‧Distance bar

14‧‧‧ Spindle

16‧‧‧Operating shaft

16a‧‧‧ Opening edge

17‧‧‧Operator

18‧‧‧Elder

18a‧‧‧Internal Department

18b‧‧‧锷

18c‧‧‧ socket embedding department

20, 21‧‧‧ Links

22‧‧‧ Plug fittings

24‧‧‧Sockets

26‧‧‧Shell Department

26a‧‧‧Locking the sphere

26b‧‧‧stop ring

26c‧‧‧Shoulder

27‧‧‧ attached spring

28‧‧‧Sleeve

28a‧‧‧Sliding surface

28b‧‧‧Inside

28c‧‧‧cutting

30‧‧‧ Tube

32‧‧ ‧ stop pin

32a‧‧‧slit

34‧‧‧Rubber bolt

100‧‧‧Remote operation gripper

101‧‧‧ rain gear

102‧‧‧ Holding the pair

104‧‧‧Fixed gripper

104a, 106a, 114a, 116a‧‧‧ concave and convex fittings

106‧‧‧ movable gripper

112‧‧‧Remote operating bar

114‧‧‧Main operating stick

116‧‧‧ Deputy operating rod

120, 122‧‧‧ bolt

Fig. 1 is a perspective view showing a front tool connecting structure of an embodiment of the present invention in a partially broken state.

Fig. 2 is a view showing the front end tool connecting structure of Fig. 1, (a) being a side view, and (b) being a cross-sectional view when viewed from the front.

Figure 3 is a diagram showing a remote operating bar having the tool end construction of the front end of Figure 1.

Figure 4 is a diagram showing the front end tool of the clamp type.

Figure 5 is a diagram showing the front end tool of the clip type.

Figure 6 is a diagram showing a conventional remote operating handle.

Hereinafter, the front end tool connecting structure of the embodiment of the present invention will be described with reference to the drawings. First, the configuration of the present invention will be described with reference to Fig. 1, and the operation will be described with reference to Fig. 2.

Referring to Fig. 1, the front end tool joint structure 1 is inserted by the front end tool 2 The head 7 is constituted by a coupling member 20 which is provided on the front end side of the remote operation bar 12. Here, for convenience of explanation, a part of the coupling member 20 and the remote operation bar 12 is broken so as to make the internal structure easy to understand.

As shown in Fig. 1, the orientation in which the plug 7 is fitted to the coupling member 20 is indicated by an arrow as the grip side in the longitudinal direction of the remote operation bar 12, and similarly, the orientation at the time of separation is used as The front end side of the rod 12 is remotely operated and displayed by an arrow. Further, the tip tool 2 will be described in detail later, and only the configuration of the periphery of the shaft end of the coupling member 20 is shown in FIG.

An annular groove 7a is formed along the circumferential direction of the outer peripheral surface of the plug 7 of the tip tool 2. Further, a fitting shaft 7b having a hexagonal cross-sectional shape is provided at the shaft end.

On the other hand, the coupling member 20 is composed of the plug receiving member 22 on the distal end side and the tubular portion 30 on the grip side. The plug receiving member 22 includes a case portion 26 that is formed in a substantially cylindrical shape, and a sleeve portion 28 that is slidably disposed on the outer peripheral surface of the case portion 26.

A socket portion 24 that accommodates the fitting shaft 7b of the plug 7 of the tip tool 2 is provided in the casing portion 26. The socket portion 24 has a hexagonal shape as the fitting shaft 7b.

Four locking balls 26a are arranged in the circumferential direction on the front end side of the socket portion 24. These locking balls 26a are disposed such that a part thereof can protrude in the diameter-reducing direction so as to be provided with a gap.

When the sleeve portion 28 is slid on the outer circumference of the casing portion 26, the sleeve portion 28 is locked by the inner projection portion 28b protruding from the inner sliding surface 28a (see Fig. 2(a)). The ball 26a is pressed in the direction of the diameter reduction. According to the above configuration, when the fitting shaft 7b is fitted into the socket portion 24, if the sleeve portion 28 pushes the locking ball 26a in a state where the plug 7 is coupled to the plug receiving member 22, the front end of the locking ball 26a enters the plug. 7 In the annular groove 7a, the connected state is locked. Further, a stopper ring 26b is provided on the outer peripheral side in the vicinity of the opening on the front end side of the casing portion 26. As a result, when the sleeve portion 28 slides toward the distal end side, the inner protruding portion 28b abuts against the stopper ring 26b, and the sliding toward the distal end side is restricted, so that the sleeve portion 28 does not fall off from the casing portion 26.

The sleeve portion 28 is provided with a potential energy to the casing portion 26 toward the distal end side by the attachment spring 27 disposed on the outer circumference of the casing portion 26. Therefore, in a state in which the external force is not applied, the sleeve portion 28 is located on the distal end side in a state where the inner protrusion 28b abuts against the stopper ring 26b, and the locking ball 26a is pressed toward the reduced diameter side by the inner protrusion 28b. State. Therefore, when the plug 7 is coupled to the plug receiving member 22, in order to bring the locking ball 26a into a free state, it is necessary to slide the sleeve portion 28 toward the holding side against the additional potential energy. Then, after the connection, in order to stabilize the working state, it is necessary to fix the sleeve portion 28 to the front end side and maintain the locked state.

In the sleeve portion 28 of the plug receiving member 22 of the present embodiment, a cutout portion 28c is formed on the grip side. On the other hand, on the grip side of the plug receiving member 22, a cylindrical portion 30 is extended. In the vicinity of the grip side edge of the sleeve portion 28 in the tubular portion 30, a stopper pin 32 is protruded so as to extend in the diameter increasing direction of the distal operating rod 12.

The diameter of the stopper pin 32 is set so as to be receivable into the cutout portion 28c of the sleeve portion 28. The depth of the cutout portion 28c is set such that when the stopper pin 32 is to be accommodated in the cutout portion 28c and the sleeve portion 28 is slid toward the grip side, the inner projection 28b of the sleeve portion 28 can self-lock the sphere The extent to which 26a leaves.

Therefore, when the sleeve portion 28 is rotated in the circumferential direction opposite to the casing portion 26, the notch portion 28c is aligned with the position of the stopper pin 32, and the sleeve portion 28 is locked toward the grip side to be locked. Since the ball 26a can be retracted in the diameter increasing direction, the plug 7 can be coupled to the plug receiving member 22.

Further, when the sleeve portion 28 is rotated in the circumferential direction to the end portion of the grip side of the sleeve portion 28, the portion other than the cutout portion 28c can abut against the position of the stopper pin 32, since the sleeve portion 28 is facing the grip. The sliding of the holding side is restricted by the stopper pin 32, so that the state in which the locking ball 26a protrudes in the diameter reducing direction is maintained, and the connected plug 7 is locked with respect to the plug receiving member 22.

Next, attention is paid to the joint portion of the tubular portion 30 and the remote operation rod 12.

At the front end of the remote operating rod 12, a plug 18 is mounted in the manner of a landfill opening. The plug body 18 is formed to have a diameter substantially the same as the inner diameter of the remote operation bar 12, and has an insertion portion 18a that is inserted into the inner side of the remote operation bar 12, and an opening that is engaged with the remote operation bar 12. The crotch portion 18b of the rim 16a. Further, a socket fitting portion 18c that can be fitted into the socket portion 24 is formed on the front end side of the crotch portion 18b. The tubular portion 30 is disposed to cover the plug body 18 disposed as described above and the front end side of the remote operating rod 12.

Further, one end of the stopper pin 32 is embedded in a boundary position between the flange portion 18b of the plug body 18 and the opening edge 16a of the remote operation bar 12. In the present embodiment, as an example of the stopper pin 32, a configuration using a spring pin is shown. If the stopper pin 32 has a hollow structure and a slit is formed in the longitudinal direction, the stopper pin 32 may not be a spring pin. Here, the slit 32a of the stopper pin 32 is disposed toward the circumferential direction of the remote operation bar 12.

Next, the action of the distal end tool connecting structure 1 will be described with reference to Fig. 2 .

2 is an enlarged view of the front end side of the remote operation bar 12 and the link member 20. Fig. 2(a) shows a side view as seen from the embedding direction, and Fig. 2(b) shows a cross-sectional view as seen from the front view.

When the tools are wet in the rain, etc., they must be well maintained. The insulation between the front end side and the grip side. As described above, in the end tool connecting structure 1 of the present embodiment, the casing portion 26 of the plug receiving member 22 and the tubular portion 30 have a hollow structure. Therefore, in the case where raindrops or the like infiltrate from the front end side of the casing portion 26, there is a possibility that water flows to the front end side of the remote operation bar 12 along the inner side.

However, in the distal end tool connecting structure 1, the shoulder portion 26c is formed on the inner side of the plug receiving member 22 coupled to the tubular portion 30 so as to protrude in the diameter-reducing direction, so that the shoulder portion 26c and the remote operating rod are Between the opening edges 16a of the 12, the crotch portion 18b of the plug body 18 is interposed. The crotch portion 18b protrudes toward the diameter-expanding side in such a manner that the diameter thereof is substantially the same as the opening edge 16a of the remote operation bar 12, whereby the raindrop or the like can be self-receiving even when the raindrop or the like penetrates from the front end side of the casing portion 26. The portion 24 is discharged to the outer peripheral surface of the remote operation bar 12 between the shoulder portion 26c and the crotch portion 18b. In the figure, the path of water discharge as described above is indicated by an arrow of a little chain line.

Further, in the distal end tool connecting structure 1, the stopper pin 32 of the hollow structure is disposed between the opening edge 16a of the remote operating rod 12 and the flange portion 18b. Further, the slit 32a of the stopper pin 32 is disposed toward the circumferential direction. Thereby, the moisture remaining between the opening edge 16a of the remote operation bar 12 and the crotch portion 18b flows in from the slit 32a toward the inside of the stopper pin 32, and is discharged toward the outside. The path of water discharge at this time is shown in the figure and is indicated by a dotted arrow.

As described above, in the end tool connecting structure 1 of the present embodiment, the raindrops or the like that have penetrated the front end side of the coupling member 20 do not flow to the inside of the remote operation bar 12, and are easily discharged to the outside. Further, at the front end of the remote operation bar 12, in addition to the insertion portion 18a in which the plug body 18 is inserted, and since the grip side is sealed by the rubber stopper 34, it is possible to almost completely suppress the passage of moisture through the remote operation bar 12. The inside is infiltrated toward the grip side.

Next, a remote operation tool using the distal end tool connection structure 1 will be described with reference to Figs.

FIG. 3 shows a remote operating rod 12 having a spindle 14 and an operating shaft 16. The operation shaft 16 is configured to be reciprocally movable in the longitudinal direction by the operation lever 17 rotatably provided on the grip side. A coupling member 20 constituting the front end tool coupling structure 1 shown in Figs. 1 and 2 is provided on the front end side of the operation shaft 16. Further, on the front end side of the main shaft 14, the same coupling member 21 as the front end tool coupling structure 1 is used. The difference between the coupling member 20 on the side of the operating shaft 16 and the coupling member 21 on the side of the main shaft 14 is that the shape of the socket portion 24 with respect to the coupling member 20 is hexagonal, and the shape of the socket portion of the coupling member 21 is formed by a quadrilateral shape. . Since the configuration is the same except for this, the detailed configuration of the coupling member 21 provided on the main shaft 14 is omitted here, and is referred to and referred to in FIGS.

Figure 4 shows the clamp-type front end tool 2 mounted to the remote operating rod 12 of Figure 3. The distal end tool 2 is configured such that the fixed side half 4 and the movable side half 8 are pivotally coupled to each other, and the fixed side half 4 is coupled to the main shaft 14 of the remote operating rod 12 of FIG. 3, the movable side The half body 8 is coupled to the operating shaft 16 of the remote operating rod 12 via the connecting pin 10. The front end tool connecting structure 1 shown in Fig. 1 is exemplified by a connection structure of the plug 7 on the free end 10a side of the connecting pin 10 and the operating shaft 16 of the remote operating rod 12.

A plug 5 is provided on the shaft end side of the fixed side half 4 in the same manner as the free end 10a side of the connecting pin 10. An annular groove 5a is formed on the outer peripheral surface of the plug 5, and a quadrangular fitting shaft 5b is provided on the axial end side. The connection structure between the plug 5 and the main shaft 14 is also the same as that of the front end tool coupling structure 1 of Fig. 1 .

The front end tool 2 thus constructed is linked to the one shown in FIG. When the rod 12 is operated remotely, the plug 5 of the fixed side half 4 is first coupled to the main shaft 14. At this time, since the fitting shaft 5b of the plug 5 is formed in a quadrangular shape, the joint position can be selected at a pitch of every 90 degrees in the circumferential direction. In other words, since the pitch angle is larger than that of the hexagonal fitting structure or the like, the positioning of the plug 7 and the operating shaft 16 of the connecting pin 10 is not easily grasped in a direction, and work efficiency can be improved. .

On the other hand, in order to reduce the resistance during the turning operation, the plug 7 side is provided with a certain degree of clearance at the connecting portion of the movable side half body 8 and the connecting pin 10, and the connecting portion between the operating shaft 16 and the operating lever 17 is also There is a gap in the setting. Therefore, a deviation in the direction of rotation about the axis is easily generated between the connecting pin 10 and the operating shaft 16.

However, in the end tool connecting structure 1 of the present embodiment, since the hexagonal fitting shaft 7b and the socket portion 24 are used in the connection portion between the connecting pin 10 and the operating shaft 16, the offset is added to the same. The maximum, as long as it is relatively rotated about 60 degrees around the axis, is easier to fit than the quadrilateral.

Figure 5 shows the cutter-type front end tool 52 mounted to the remote operating rod 12 of Figure 3. The front end tool 52 is configured such that the fixed side half body 54 and the movable side half body 58 are pivotally coupled to each other. The fixed side half body 54 is coupled to the main shaft 14 of the remote operating rod 12 of FIG. The half body 58 is coupled to the operating shaft 16 of the remote operating rod 12 via the connecting pin 10. Here, the configuration of the connecting pin 10 is the same as that of the clamp-type front end tool 2 shown in Fig. 4, and therefore the same reference numerals are given for display. As described above, according to the present embodiment, the front end tool connecting structure 1 can correspond to various types of tools such as the clamp type of the tip tools 2, 52.

Further, on the axial end side of the fixed side half body 54 of the front end tool 52 of Fig. 5, a plug 55 is provided similarly to the front end tool 2 of Fig. 4, and the plug 55 has an annular groove 55a for locking and a quadrilateral shape. The shaft 55b is closed. Thereby, if from the plug 55 Initially connected to the spindle 14 of the remote operating rod 12, the positioning of the connecting pin 10 of the movable side half body 58 is facilitated, so that work can be performed efficiently.

As described above, according to the front end tool coupling structure 1 of the present invention, since the sleeve portion 28 is slidably operated, the locking or unlocking of the joint state can be easily switched, and by combining the quadrilateral plug 5 and the six sides Since the plug 7 is formed to facilitate positioning, work efficiency can be improved.

In addition, as described above, since the moisture that permeates the joint portion can be prevented from penetrating into the inside of the remote operation rod 12 (the main shaft 14 and the operation shaft 16), it can be efficiently removed to the outside. The insulation state between the front end side and the grip side is well maintained, and work safety is improved.

Further, in the above-described embodiment, the notch portion 28c of the sleeve portion 28 is shown as an example in which only one end edge is formed, but a plurality of portions may be formed.

Further, in the above-described embodiment, the stopper pin 32 is shown as an example in which the slit 32a is disposed in the circumferential direction. However, the flange portion 18b that flows through the plug body 18 can be operated remotely. At the boundary of the opening edge of the rod 12, the retained water is guided to the inside of the stopper pin 32, and the direction in which the slit 32a is formed is not limited to the circumferential direction.

Moreover, in the above-described embodiment, the configuration in which the plug on the main shaft side is provided with a quadrangular shape and the plug on the side of the operation shaft is hexagonal is shown as an example. However, the present invention is not limited to this. When a polygonal plug is used on both the main shaft side and the operation shaft side, the spindle side is a polygonal plug having a smaller number of faces than the operation axis side, and the combination can be easily positioned in any combination. , and can improve the efficiency of work.

Further, as a configuration for facilitating the connection operation on the operation shaft side, a configuration in which a circular plug is provided on the operation shaft side may be considered. On the other hand, on the spindle side With a polygonal plug, the orientation of the main shaft plug is limited by the number of faces of the polygonal plug, so the positioning becomes easy. Further, the operation axis in which the number of the upper connecting portions is larger than the major axis and the number of the gaps is large is not limited to the circular direction, and the connection is easy.

(industrial availability)

The front end tool connecting structure of the present invention can improve workability and ensure safety with respect to a 2-axis type remote operating rod composed of a main shaft and an operating shaft, in particular, a remote operating rod using a clamp type front end tool. Useful for use.

1‧‧‧ Front end tool link construction

2‧‧‧ front-end tools

7‧‧‧ plug

7a‧‧‧ annular groove

7b‧‧‧Mixed shaft

12‧‧‧Distance bar

16‧‧‧Operating shaft

16a‧‧‧ Opening edge

18‧‧‧Elder

18a‧‧‧Internal Department

18b‧‧‧锷

18c‧‧‧ socket embedding department

20‧‧‧Links

22‧‧‧ Plug fittings

24‧‧‧Sockets

26‧‧‧Shell Department

26a‧‧‧Locking the sphere

26b‧‧‧stop ring

27‧‧‧ attached spring

28‧‧‧Sleeve

28b‧‧‧Inside

28c‧‧‧cutting

30‧‧‧ Tube

32‧‧ ‧ stop pin

32a‧‧‧slit

34‧‧‧Rubber bolt

Claims (4)

A front end tool connecting structure is a front end tool connecting structure of a remote operating rod provided with a plug receiving member at a front end, and the plug receiving member can be formed in the front end tool by pressing a part of the locking spherical body arranged in the circumferential direction The plug having the outer peripheral surface of the plug is locked, and the plug in the connected state is locked; and the plug is provided with a plug having an insertion portion inserted into the front end side of the remote operation rod And a crotch portion that can be radially protruded from an opening edge of the front end side of the remote operation bar; and a coupling member having a portion on the grip side and covering the front end side of the remote operation bar The tubular portion of the crotch portion has the plug receiving member on the distal end side. The tool insertion structure of the front end of the claim 1, wherein the plug receiving member is provided with: a socket portion for inserting the plug; and a housing portion having the socket portion disposed therein, wherein the locking ball is arranged in a circumferential direction; The sleeve portion is slidably disposed on the outer circumferential surface of the casing portion, and has an inner protrusion that can press the locking ball in the diameter reducing direction with sliding on the inner sliding surface. a cutout portion is formed in one of the end edges of the holding side, and the tubular portion includes a stopper pin having a hollow structure, wherein one end is inserted into the boundary between the opening edge and the crotch portion, and the other end is abuttable to the above The end edge of the grip side of the sleeve portion is slidable in the diameter-expanding direction of the casing portion so as to be received in the cutout portion, and a slit extending in the longitudinal direction is formed. For example, the front end tool connection structure of claim 1 or 2, wherein the front end tool has: a fixed side half body having the above plug at a shaft end; a movable side half body that is pinned in a manner that is relatively rotatable relative to the fixed side half body; and a connecting pin that is swingably The plug is connected to the movable side half body and has the plug on the free end side, and the remote operating rod includes a main shaft having the plug receiving member connectable to the plug of the fixed side half body, and an operating shaft. The plug receiving member is connectable to the plug of the connecting pin; the plug and the socket portion connecting the fixed side half body and the main shaft are connected to the movable side half and the operating shaft The plug and the socket portion constitute a polygon having a small number of faces. The front end tool of claim 1 or 2, wherein the front end tool is provided with: a fixed side half body having the plug at a shaft end; and a movable side half body opposite to the fixed side half body a rotating pin is axially connected in a clamp shape; and a connecting pin swingably coupled to the movable side half body and having the plug on a free end side; the remote operating bar is provided with a main shaft having a main shaft The plug receiving member coupled to the plug of the fixed side half body; and the operating shaft having the plug receiving member connectable to the plug of the connecting pin; The plug and the socket portion polygon of the fixed side half body and the main shaft are coupled to each other, and the plug and the socket portion that connect the movable side half body and the operation shaft are circular.