JP2003145454A - Remotely controlled bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remotely controlled bar which can easily change the length, and hold an article in order to perform a safe and simple operation. SOLUTION: In this remotely controlled bar, a holding unit 2 provided on a tip part of an operation bar 1 is opened/closed by the operation of an operation unit 3 provided on a base end part of the operation bar 1. In the operation bar 1, a bar member of a double structure in which an inner bar member 5 is inserted in a tubular outer bar member 4 is expandable. The holding unit 2 comprises a pair of suction cups 37 and 37 to hold an article, a spring member 35 with one end thereof connected to the suction cups and the other end connected to the outer bar member, and a connection member 36 which connects the tip of the inner bar member 5 to the suction cup 37, and brings the suction cups 37 close to each other by retracting the inner bar member 5 from the outer bar member 4 by the operation of the operation unit 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control rod used when picking up an object that has fallen in a track or the like, or when picking up an object caught on an electric wire.

[0002]

2. Description of the Related Art Conventionally, when a staff member picks up an object that has fallen on the track, he or she actually descends on the track or picks up the object with the tip of a stick.

[0003]

However, actually getting down on the track and picking it up involves a risk of electric shock or being hit by a train. Furthermore, the method of simply hooking with the tip of a stick was inconvenient because the length was constant. In other words, if the rod is too short, it will not reach the object, but if the rod is too long, it may get caught in an overhead wire or receive an electric shock, or may be inconvenient to carry or store. In addition, since there is no way to pinch an object and there is no choice but to hook it, there is a limit in using it.

The present invention has been made in view of the above circumstances, and its main purpose is to easily change the length and to grip an object in order to realize a safe and simple work. It is to provide a remote control rod that can be operated.

[0005]

In order to solve the above-mentioned problems, a remote control rod of the present invention has an operating portion in which a pinch portion provided at the tip end portion of the operation rod is provided at the base end portion of the operation rod. Is a remote control rod that can be opened and closed by the operation of, wherein the operation rod is a double-structured rod member in which the inner rod member is inserted into the pipe-shaped outer rod member is expandable and contractable, The gripping part includes a pair of gripping parts for sandwiching an object, a spring member having one end connected to the gripping part and the other end connected to an outer bar member, the inner bar member tip part and the gripping part. A remote control rod comprising: a connecting member that is connected to the inner rod member and moves backward with respect to the outer rod member by operating the operating portion to bring the grip portions closer to each other.

In addition to the above construction, preferably, the outer rod member is formed by sequentially inserting a plurality of outer pipe members having different diameters, and fixing the adjacent outer pipe members to each other.
A fitting attached to the outer peripheral surface of the proximal side outer pipe member is made by tightening the distal side outer pipe member, and the inner rod member is formed by sequentially fitting a plurality of substantially cylindrical inner pipe members having different diameters. The distal-side inner pipe member is inserted relative to the proximal-side inner pipe member so that the shaft center of the distal-side inner pipe member is eccentric to the proximal-side inner pipe member. When rotated by pressing the outer peripheral surface of the distal end side inner pipe member against the inner peripheral surface of the proximal end side inner pipe member,
Both inner pipe members are remote control rods that are fixed.

Further, preferably, in addition to the above-mentioned structure, a rotation stopper which is in frictional contact with the inner surface of the inner pipe member is disposed inside the inner pipe member at the base end side, and the inner end of the inner pipe member at the tip end side is arranged. Part is eccentric to its axis and
The remote control rod is characterized in that a pin member is provided so as to project toward the base end side, and the rotation stopper and the inner pipe member at the tip end side are rotatably connected by the pin member.

Further, preferably, in addition to any of the above-mentioned constitutions, the remote control rod is characterized in that the control rod is made of an insulating material.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The remote control rod of the present invention will be described below in more detail with reference to Examples. FIG. 1 is a front view showing an embodiment of a remote control rod of the present invention.

The remote control rod of this embodiment comprises an extendable and retractable operation rod 1, a pinch portion 2 provided at the tip of the operation rod 1, and an operation portion 3 provided at the base end of the operation rod 1. The operation rod 1 has a double structure in which an inner rod member 5 is inserted into a pipe-shaped outer rod member 4 (FIG. 3). Two pipe members are connected to each other in the longitudinal direction so that they can expand and contract.

The outer rod member 4 is formed by inserting a distal end outer pipe member 7 into a proximal end outer pipe member 6, and a fitting 20 is installed at the distal end portion of the proximal end outer pipe member 6. Has been done. Note that FIG. 2 shows the sandwiching portion 2, and (a) is
The plan view and (b) are the front views. FIG. 3 is a front view showing the operation section 3, and FIG. 4 is a perspective view showing the joint tool 20.

As shown in FIG. 4, the fitting 20 is fixed to the distal end of the proximal outer pipe member 6 and has a fitting insertion hole 21 into which the distal outer pipe member 7 is fitted so as to be expandable. The joint member main body 22 is provided, and the operating lever 23 provided on the joint member main body 22 for tightening the distal end side outer pipe member 7 by reducing the diameter of the fitting insertion hole 21. The fitting insertion hole 21 is formed in a flexible tubular portion that is partially open in the circumferential direction, and operation pieces 24 that extend in the direction perpendicular to the axial direction are formed at both open end portions of the flexible tubular portion. This operation piece 2
The operation lever 23 is rotatably provided on a shaft 25 spanned between the operation pieces 24 in order to isolate the four from each other.

One of the operation pieces 24 has an engaging groove 2 on the outer surface thereof.
4a is formed, and an engaging portion 23a capable of engaging with the engaging groove 24a is formed on the operation lever 23. The operating lever 23 is held by the shaft member so that the engaging portion 23a can be engaged with and disengaged from the engaging groove 24a, and further separation of the operating pieces 24 from each other is restrained in the engaged state. Therefore, when the operation lever 23 is rotated, the engagement portion 23a rises from the engagement groove 24a. In the disengaged state of the engagement portion 23a and the engagement groove 24a, the operation pieces 24, 24 are brought close to each other, so that the tip-side outer pipe member 7 is tightened and fixed.

As shown in FIG. 5, the inner rod member 5 is
The distal end side inner pipe member 8 is fitted and inserted into the proximal end side inner pipe member 9. Note that FIG. 5 is a cross-sectional view showing a connected state of the distal end side inner pipe member 8 and the proximal end side inner pipe member 9.

Inside the base end side inner pipe member 9, a rotation stopper 10 having a substantially columnar shape is arranged. The rotation stopper 10 has a center portion made of ABS resin 10a,
The urethane rubber 10b is provided around it. The proximal end portion of the distal end side inner pipe member 8 has a substantially cylindrical cam 11
Is blocked by. A pin 12 is formed on the cam 11 so as to project toward the base end side at a position eccentric with respect to the axial center of the cam 11. The pin 12 is eccentrically inserted into the rotation stopper 10 so as to be rotatable. .

As shown in FIG. 3, the proximal outer pipe member 6
The operation portion 3 installed on the base end side of the is a substantially doglegged handle 13 attached to the base end portion of the base end side outer pipe member 6.
The handle 13 is provided with a substantially L-shaped lever 15 whose one end is pivotally supported by the shaft 14. One end of the handle 13 connected to the proximal outer pipe member 6 has a proximal outer pipe member 6
A cylindrical portion 16 having the same inner diameter as the inner diameter of is formed integrally.

The outer pipe member 6 on the base end side and the handle 13 are connected via an attachment 17 having a substantially cylindrical shape. The outer diameter of the attachment 17 is matched with the inner diameters of the proximal end side outer pipe member 6 and the cylindrical portion 16, and approximately half is the proximal end portion of the proximal end side outer pipe member 6 and the other half is the cylindrical portion. Plugged in 16. This attachment 17
Is a cylindrical portion 16 of the outer pipe member 6 on the proximal end side and the handle 13.
Are fixed by screws S and S, respectively.

The inside diameter of the attachment 17 is formed such that the portion inserted into the outer pipe member 6 on the base end side is slightly larger than the portion inserted into the cylindrical portion 16. The base end portion of the base end side inner pipe member 9 is inserted into the large diameter portion. Inside the base end portion of the base end side inner pipe member 9, a substantially cylindrical connecting link 18 is arranged, and the base end side inner pipe member 9 and the connecting link 18 are inserted in the radial direction of the roll pin 1.
Fixed by 9.

The connecting link 18 is connected to the lever 15 via a connecting shaft 30 having a substantially round bar shape. The rear end 30a of the connecting shaft 30 is formed in a substantially T shape. The tip of the connecting shaft 30 is inserted into the connecting link 18 and fixed with a nut. Further connecting shaft 3
The rear end 30a of 0 has its T-shaped portion fitted in the groove 15c formed in the bent portion 15b of the lever 15.

As shown in FIG. 2, the tip side inner pipe member 8
A tip movable member 31 made of Duracon resin is attached to the tip of the. FIG. 7 is a cross-sectional view of the tip portion of the tip side inner pipe member 8. This tip movable tool 31
A head portion 32 having a substantially oval shape in which both right and left circular portions are cut off in a straight line in a vertical cross section and a substantially cylindrical insertion portion 33 to be inserted into the distal end side inner pipe member 8 are integrally formed. There is. The head portion 32 is formed with a screw fitting insertion hole 34 which is elongated in the axial direction toward the opposing arcuate surface. A screw 39 penetrating the tip-side outer pipe member 7 in the diametrical direction is fitted into the screw fitting hole 34. This screw 39
Are fixed to the tip side outer pipe member 7. Therefore, with respect to the screw 39 and the tip side outer pipe member 7, the tip end movable member 31 and the tip side inner pipe member 8 connected thereto can be moved in the axial direction by the length of the screw fitting insertion hole 34. There is.

The pinch portion 2 provided at the tip of the tip side outer pipe member 7 includes a pair of first leaf springs 35, 35 having base ends fixed to the tip side outer pipe member 7, and a tip side inner pipe. A pair of second leaf springs 36, 36 whose base ends are fixed to the member 8
Equipped with. The tip end portions of the first leaf spring 35 and the second leaf spring 36 are overlapped with each other, and a suction cup 37 serving as a grip portion is fixed with a screw B or the like.

The first plate spring 35 has a substantially strip plate shape, and its base end portion extends along the outer peripheral surface of the outer pipe member 7 on the distal end side.
It is bent and formed. Then, this portion is superposed on the outer peripheral surface of the tip side outer pipe member 7, and is fixed to the tip side outer pipe member 7 by the rivet 38.

The second plate spring 36 is in the shape of a strip plate which is slightly narrower than the first plate spring 35. The base end portion is passed through a gap between the tip end side outer pipe member 7 and the flat surface portion of the head portion 32 of the tip end movable member 31 which is linearly cut, and the tip end outer peripheral surface of the tip end side inner pipe member 8 is formed. It is fixed with a screw C. At this time, the screw C reaches the insertion portion 33 of the distal end movable member 31 and also fixes the distal end movable member 31 and the distal end side inner pipe member 8. The second leaf springs 36 are bent and formed in a substantially V shape, and are arranged so as to be separated from each other from the tip of the operation rod 1 toward the tip side.

The suction cup 37 has a substantially hemispherical surface 37b made of rubber, and a boss portion 37a having a substantially short columnar shape is integrally formed at the center of the outer peripheral surface thereof so as to project outward. The tip portions of the first leaf spring 35 and the second leaf spring 36 are superposed on the tip end surface of the boss portion 37a and fixed by the screw B.

As shown in FIG. 3, a coil spring 40 is interposed between the handle 13 and the lever 15,
The lever 15 is rotated around the shaft 14 with respect to the handle 13, and is constantly urged to push and expand. As a result, the connecting shaft 30 connected to the lever 15 is pushed into the distal end side, and accordingly, the distal end side and the proximal end side inner pipe members 8 and 9 are also pushed into the distal end side, and the second leaf spring 36.
The suction cups 37 connected to each other are separated from each other.

Further, the screw 39 inserted into the movable tip 31 and fixed to the distal end of the outer pipe member 7 on the distal side hits the proximal end of the screw insertion hole 34 formed in the movable tool 31. As a result (state of FIG. 2), the distal end side inner pipe member 8 is not unnecessarily pushed to the distal end side.

On the other end of the handle 13, an annular locking member 13a made of wire or the like is rotatably attached. The other end of the lever 15 is integrally formed with a convex projecting portion 15a to which the locking tool 13a can be hooked. Therefore, when the lever 15 is brought close to the handle 13, the locking tool 13a is hooked on the protruding portion 15a so that the lever 15 does not return to its own accord even if the hand is released.

The tip side outer pipe member 7, the base side outer pipe member 6, the tip side inner pipe member 8, the base side inner pipe member 9,
The handle 13, the lever 15 and the like are made of an insulating material such as FRP and glass fiber.

The use of the remote control rod of the above embodiment will be described. The remote control rod of the present embodiment uses an insulating material such as FRP for the main part, and therefore does not transmit electricity. Therefore, it can be used to pick up an object caught on an electric wire or an object that has fallen in the track.

For example, when picking up an object that has fallen into the track, the tip side outer pipe member 7 is pulled out from the base end side outer pipe member 6 in accordance with the distance to the item. At this time, since the tip-side outer pipe member 7 and the tip-side inner pipe member 8 are in a state of being connected to each other via the sandwiching portion 2, the tip-side inner pipe member 8 is also pulled out at the same time. Then, the tip side outer pipe member 7 is rotated in the circumferential direction relative to the base end side outer pipe member 6.

At this time, since the tip end side outer pipe member 7 and the tip end side inner pipe member 8 are connected to each other through the sandwiching portion 2, the tip end side outer pipe member 7 is interlocked with the tip end side outer pipe member 7. The inner pipe member 8 also rotates. Further, since the base end side outer pipe member 6 and the base end side inner pipe member 9 are in a state of being connected to each other via the operation portion 3, the base end side outer pipe member 6 is interlocked with the base end side pipe member 9. The inner pipe member 9 also rotates.

As is apparent from FIG. 5, when the distal end side inner pipe member 8 is rotated with respect to the proximal end side inner pipe member 9,
The tip-side inner pipe member 8 rotates about a pin 12 provided on a cam 11 installed at the base end portion thereof. The rotation stopper 10 in the proximal side inner pipe member 9 hardly rotates due to friction with the inner peripheral surface of the proximal side inner pipe member 9,
The tip side inner pipe member 8 rotates about the pin 12.

Since the pin 12 is eccentrically connected to the cam 11, the outer peripheral surface of the distal end side inner pipe member 8 rotates while pressing the inner peripheral surface of the proximal end side inner pipe member 9.
As a result, the inner pipe member 8 on the tip side and the inner pipe member 9 on the base side are fixed.

Next, the operating lever 23 of the fitting 20 provided at the distal end of the proximal outer pipe member 6 is pushed downward to reduce the diameter of the fitting insertion hole 21 and the distal outer pipe member 7
Tighten (Fig. 4). Thereby, the tip side outer pipe member 7 and the base end side outer pipe member 6 are fixed.

Normally, as described above, the lever 15 is opened with respect to the handle 13 by the force of the spring 40, and the suction cups 37 are separated from each other accordingly. Therefore, the lever 15 is gripped so that the dropped object is sandwiched between the suction cups 37, 37 which are separated from each other.

Then, the connecting shaft 30 is pulled toward the base end side, and the base end side inner pipe member 9 and the tip end side inner pipe member 8 are pulled.
Are simultaneously pulled toward the base end side with respect to the outer rod member 4.
At this time, the proximal end inner pipe member 9 is attached to the attachment 1
Due to the step inside 7, it does not retreat beyond a certain level. Then, the distal end movable member 31 provided at the distal end portion of the distal end side inner pipe member 8 is retracted to the distal end side of the groove along the screw 39 passed through the screw fitting insertion hole 34, and the second leaf spring 36 is distally moved. It is pulled into the outside pipe member 7.

As a result, the first leaf spring 35 bends inward, and the suction cup 37 attached to the tip of the first leaf spring 35 holds an object.
Then, the operating rod 1 may be moved and picked up. At this time, if it is difficult to continue gripping the lever 15, by engaging the locking tool 13a attached to the lower end of the handle 13 with the protrusion 15a provided on the lower end of the lever 15,
The lever 15 is fixed and the pinch portion 2 does not open. 6 is a perspective view showing the distal end portion of the remote control rod of this embodiment, showing a state where the suction cups 37, 37 are brought close to each other.

After picking up, release the hand and the lever 15
Is released from the handle 13 by the force of the spring 40. Thereby, the inner pipe members 8 and 9 on the distal end side and the proximal end side are formed.
Moves toward the tip side, the second leaf spring 36 is also pushed out toward the tip side, and the suction cup 37 is separated. As a result, the sandwiched object is released.

When storing, the operating lever 23 of the fitting 20 is pulled up to open the outer pipe member 7 on the distal end side and the outer pipe member 6 on the proximal end side. Then, when the tip side outer pipe member 7 is rotated in the opposite direction to the case of fixing the tip side outer pipe member 7 to the base end side outer pipe member 6, the tip end side inner pipe member 8 can expand and contract with respect to the base end side inner pipe member 9. Therefore, the outer pipe member 7 on the distal end side may be pushed into the outer pipe member 6 on the proximal end side.

Further, since the remote control rod of the present embodiment uses the insulating material for the main part, it is possible to remove flying objects of the electric wire in the same manner as the above, as it is.

The remote control rod of the present invention is not limited to the configuration of the above embodiment, but can be changed as appropriate. For example, in the present embodiment, the cam 1 installed at the base end of the inner pipe member 8 on the tip side.
Although the pin 12 fixed to 1 is rotatably connected to the rotation stopper 10, the reverse is also possible. That is, the pin 12 may be fixed to the rotation stopper 10 and rotatably connected to the distal end side inner pipe member 8. Further, the pin 12 may be rotatably fitted into both the cam 11 and the rotation stopper 10, and both ends thereof may be fixed with bolts.

Further, even if it is not the operation portion as in the above-mentioned embodiment, any mechanism capable of moving the distal end side and the proximal end side inner pipe members 8 and 9 with respect to the outer rod member 4 in the longitudinal direction. It can be changed as appropriate. In addition, a string, a wire or the like may be used instead of the second leaf spring 36. Further, in the present embodiment, the suction cup is used as the grip portion, but other than this, the shape can be changed as appropriate as long as it can grip an object.
In the present embodiment, the description has been made of the case where two bar members are connected, but according to the connection structure as described above, it is possible to connect a plurality of bar members.

[0043]

As described in detail above, according to the remote control rod of the present invention, the length can be easily changed, and an object can be pinched and gripped while preventing electric shock.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a remote control rod of the present invention.

FIG. 2 shows a pinch portion of the remote control rod of FIG. 1, and (a) is
The plan view and (b) are the front views.

3 is a front view showing an operating portion of the remote control rod of FIG. 1. FIG.

4 is a perspective view showing a joint tool of the remote control rod of FIG. 1. FIG.

5 is a cross-sectional view showing a connected state of a distal end side inner pipe member and a proximal end side inner pipe member of the remote control rod of FIG.

6 is a perspective view showing a distal end portion of the remote control rod of FIG. 1. FIG.

FIG. 7 is a cross-sectional view of the distal end side inner pipe member distal end portion of the remote control rod of FIG. 1.

[Explanation of symbols]

1 control rod 2 Sandwich part 3 operation part 4 Outside bar member 5 Inner rod member 6 Outer pipe member on the base end side 7 Tip side outer pipe member 8 Tip side inner pipe member 9 Base end side inner pipe member 10 rotation stopper 11 cams 12 pin 13 handle 15 lever 17 Attachment 18 Link 20 fittings 30 connecting shaft 31 Tip movable tool 34 Screw fitting hole 35 First Leaf Spring 36 Second leaf spring 37 Sucker (grasping part)

Claims (4)

[Claims] 1. A sandwiching portion provided at a tip end portion of an operating rod,
A remote operation rod that can be opened and closed by operating an operation unit provided at a base end portion of the operation rod, wherein the operation rod has a double structure in which an inner rod member is inserted into a pipe-shaped outer rod member. And a pair of gripping parts for sandwiching an object and one end of which is connected to the gripping part and the other end of which is connected to an outer bar member. And a connecting member that connects the tip portion of the inner rod member and the grip portion, and causes the inner rod member to retreat with respect to the outer rod member by the operation of the operation unit so as to bring the grip portions closer to each other. Remote control rod to do. 2. The outer rod member is formed by sequentially inserting a plurality of outer pipe members having different diameters. Adjacent outer pipe members are fixed to each other on the outer peripheral surface of the proximal outer pipe member. The fitting is made by tightening the tip side outer pipe member, and the inner rod member is formed by sequentially fitting and inserting a plurality of substantially cylindrical inner pipe members having different diameters, and the tip side inner pipe member is Its axis is eccentric to the axis of the proximal inner pipe member and is relatively rotatable, and when the distal inner pipe member is rotated with respect to the proximal inner pipe member, the outer circumference of the distal inner pipe member The remote control rod according to claim 1, wherein both inner pipe members are fixed by pressing the surface against the inner peripheral surface of the proximal end inner pipe member. 3. A rotation stopper that is in frictional contact with the inner surface of the inner pipe member is disposed inside the proximal end inner pipe member, and a rotation stopper is provided at the distal end side inner pipe member proximal end portion. 3. A pin member is provided which is eccentric with respect to the base member and protrudes toward the base end side, and the rotation stopper and the inner pipe member on the tip end side are connected by the pin member so as to be rotatable relative to each other. Remote control rod described in. 4. The remote control rod according to any one of claims 1 to 3, wherein the control rod is made of an insulating material.