JP5876559B1 - Pillar switch - Google Patents

Abstract

A pole switch that can reliably identify a pole switch to be operated is provided. A pole switch 10 includes a switch body 70, a pair of operation ropes 7a and 7b, and an operation rope fixing device 3. The switch body 70 has an operation handle 7h. The operation ropes 7a and 7b are moored at both ends of the operation handle 7h. The operation rope fixing device 3 includes a case 30 and a lock mechanism 4. The lock mechanism 4 can lock or release the operation ropes 7 a and 7 b inserted through the case 30. The pole switch 10 further includes a movable display board 5b and operation ropes 6a and 6b. The operation ropes 6 a and 6 b are engaged with the lock mechanism 4. When the end of the operation rope 6a is pulled, the movable display board 5b is moved to move the operation target column switch 10 from the plurality of column switches 10 to the ground before operating the operation handle 7h. Can be reliably identified. When the end of the operation rope 6b is pulled, the lock mechanism 4 can be returned to lock the operation ropes 7a and 7b. [Selection] Figure 5

Description

  The present invention relates to a pole switch. In particular, a pole switch equipped with an operation rope for opening and closing a pole switch installed at the upper part of a utility pole from the ground side, and the pole switch to be operated from a plurality of pole switches It is related with the structure of a pole switch that can identify

  For example, a utility pole has a pole switch installed on its top. The pole switch has a tiltable operation handle on the front. By tilting the operation handle to either side, an electrical switch installed inside the pole switch can be switched.

  The operation handle has an operation rope moored at both ends thereof. An operation handle can be operated by operating a set of operation ropes suspended from the ground from the ground side, and an electric circuit connected to the pole switch can be connected or cut off.

  By the way, when a plurality of pole switches are installed on the utility pole, there is a concern that the pole switches that are not to be operated are opened and closed. When operating the operating rope provided on the pole switch that is not the target of operation, other electric circuits are opened and closed unnecessarily, and a power failure occurs due to an erroneous operation of “OFF”. On the other hand, an erroneous operation of “ON” causes a problem of supplying power in an unsafe state.

  In order to prevent such an erroneous operation of the pole switch, it is confirmed by visually tracking the mooring point of the operation rope from the end of the operation rope. However, when the state of the column is complicated or at night, it is difficult to visually track the mooring point of the operation rope.

  In order to solve such a problem, a column-top switch with an operation rope that can be operated safely and appropriately with a simple configuration without misoperation of the column-top switch is disclosed (for example, see Patent Document 1). ).

  The pole switch according to Patent Document 1 is provided at both ends of the operation handle, includes a sub handle pivotally supported with respect to the operation handle, and rotates the sub handle when the electric circuit is opened and closed. Thus, after the sub handle rotates by a predetermined angle, the operation handle rotates to open and close the electric circuit.

  In the pole switch according to Patent Document 1, since the sub handle is rotated before the operation handle is rotated, the operation for switching the electric circuit is appropriate by visually confirming the rotation state of the sub handle. It is possible to determine whether or not there is an electric circuit and then to open and close the electric circuit via the operation handle, thereby preventing erroneous operation.

JP 2010-186652 A

  FIG. 8 is a rear view showing the configuration of the pole switch according to the prior art. FIG. 9 is a front view showing a configuration of a pole switch according to the prior art. FIG. 10: is a right view which shows the structure of the pole switch by a prior art, and is a state figure which mounted the pole switch on the utility pole. FIG. 11: is a front view which shows the structure of the operating rope fixing device with which the pole switch by a prior art is equipped. 9 and 10 of the present application correspond to FIGS. 5 and 6 of Patent Document 1, and FIG. 11 of the present application corresponds to FIG. 7-2 of Patent Document 1.

  Referring to FIGS. 8 to 10, the pole switch 7 according to the prior art includes a box-shaped switch body 70 and a plurality of connection terminals 7t. The switch body 70 is provided with a tiltable operation handle 7h on the front surface (see FIG. 9). The operation handle 7h has a first pointer 71n fixed at the center thereof (see FIG. 9). On the other hand, the switch body 70 is provided with a second pointer 72n on the side opposite to the operation handle 7h. An electric wire W can be connected to the connection terminal 7t (see FIG. 10).

  Referring to FIG. 9, the operation handle 7h has one end of a pair of operation ropes 7a and 7b moored at both ends thereof. The pair of operating ropes 7a and 7b is suspended toward the ground. When one operation rope 7a is pulled, the operation handle 7h can be tilted to one side so that the tip of the first pointer 71n is directed to the “ON” display. And the electric switch (not shown) arrange | positioned inside the switch main body 70 can be made into a connection state, and an electric circuit can be connected. When the tip of the first pointer 71n is directed to the “ON” display, the tip of the second pointer 72n is directed to the “ON” display (see FIG. 8).

  Referring to FIG. 9, when the other operation rope 7 b is pulled, the operation handle 7 h can be tilted to the other side so that the distal end portion of the first pointer 71 n is directed to “OFF”. And the electric switch (not shown) arrange | positioned inside the switch main body 70 can be made into a disconnection state, and an electric circuit can be cut | disconnected. When the tip of the first pointer 71n is directed to “OFF”, the tip of the second pointer 72n is directed to “OFF” (see FIG. 8).

  Referring to FIGS. 8 to 10, the pole switch 7 further includes a switch support fitting 71 and a skirt 72. The switch support fitting 71 is attached to the upper part of the switch body 70. The pole switch 7 can be suspended from the arm metal A using the switch support fitting 71 (see FIG. 10). In addition, the arm metal A is arrange | positioned in the horizontal state on the upper part of the utility pole P (refer FIG. 10). The skirt 72 is attached to the lower part of the switch body 70. The skirt 72 covers the lower part of the switch body 70.

  Referring to FIG. 11, an operation rope fixing device 8 is supported on the utility pole P. The operation rope fixing device 8 includes a case 80 that constitutes an outer shell thereof. The case 80 is fixed to the utility pole P using the band member 8b. In the case 80, a pair of operation ropes 7a and 7b are inserted. A handle 7k is moored at the end of the pair of operating ropes 7a and 7b. Generally, the operation rope fixing device 8 is installed at a height of 4.5 m or more from the ground. Further, a person other than the related person cannot easily operate the operation ropes 7a and 7b.

  Referring to FIG. 11, the operating handle 7h can be tilted in either direction by grasping and pulling one handle 7k or the other handle 7k. Inside the operation rope fixing device 8, a lock mechanism (not shown) for engaging or releasing the set of operation ropes 7a and 7b is arranged. By locking the pair of operation ropes 7a and 7b, it is possible to prevent the operation handle 7h from being inadvertently tilted.

  Referring to FIG. 11, a display plate 7d is attached to the end portion side of the other operation rope 7b. A line name connected to the pole switch 7 is written on the display board 7d. By confirming the line name, it is possible to specify the column switch 7 to be operated from among the plurality of column switches 7. However, the line name may be mistaken, and there is a concern that the pole switch 7 may be erroneously operated.

  In the pole switch according to Patent Document 1, since the sub handle is rotated before the operation handle is rotated, the operation for switching the electric circuit is appropriate by visually confirming the rotation state of the sub handle. It can be judged whether there is.

  However, as shown in FIG. 10, since the operation handle 7h is generally disposed opposite to the utility pole P, the utility pole P or other fixtures become an obstacle, and the rotation state of the sub handle is visually confirmed. There is a problem that it is not easy. There is a need for a pole switch equipped with a set of operation ropes that can reliably identify the pole switch to be operated from among a plurality of pole switches. The above can be said to be the subject of the present invention.

  This invention is made | formed in view of such a subject, Comprising: It is a pole switch provided with a set of operation ropes, Comprising: From a plurality of pole switches, the pole switch of the operation object It is an object of the present invention to provide a pole switch that can reliably identify the switch.

  The present inventor usually pays attention to the fact that the operation rope fixing device is locking a set of operation ropes, and that the back side of the switch body is not obstructed by the utility pole or other poles. The movable display board is arranged on the back side of the switch body, the set of second operation ropes are moored on the movable display board, the set of second operation ropes are inserted into the operation rope fixing device, When the second operation rope is pulled, the movable display board behaves, so that it is possible to reliably identify the pole switch to be operated and to solve the problem by releasing the lock. Thus, the inventors have invented the following new pole switch.

  (1) A pole switch according to the present invention has a box-shaped switch body having a tiltable operation handle disposed on one surface, and one end moored at both ends of the operation handle, and extends toward the ground. A set of first operation ropes, a case supported by a power pole, and a set of the first operation ropes inserted through the center, and a case disposed inside the case, An operation rope fixing device having a lock mechanism for locking or releasing the first operation rope; and a movable display plate that is disposed on a surface opposite to one surface of the switch body and is movable with respect to the fixed frame body. One end is moored at both ends of the movable display board, extends toward the operation rope fixing device, is inserted into the case from both sides of the pair of first operation ropes, and engages with the lock mechanism. A pair of second operation ropes, and the end of one of the second operation ropes When stretched, the movable display board is moved in one direction, the lock mechanism is operated to release the first pair of operating ropes, and the other end of the second operating rope is pulled. The movable display board is moved in the other direction, and the lock mechanism is returned to lock the set of first operating ropes.

  (2) The lock mechanism is disposed inside the case, and a guide block is formed on both ends with guide pieces that slidably guide the first operation rope from both sides of the pair of first operation ropes. And a movable plate that is locked to either one of the second operation ropes or the other, and that allows only linear motion substantially parallel to a direction in which the pair of first operation ropes moves, A base end is fixed to the center of the moving plate, an operating pin protruding in the moving direction of the moving plate, one end is rotatably connected to the tip of the operating pin, and the other end is a set. A pair of bell links which are arranged so as to be able to press the first operation rope toward the first operation rope and which have a long hole opened in the center, and are erected from the guide block. A pair of fixing pins slidably connected to each other, and one of the second operations. When the end of the rope is pulled, the other ends of the pair of bell links are separated from the set of the first operating ropes to release the set of the first operating ropes, and the other second When the end portion of the operation rope is pulled, it is preferable that the other end portions of the pair of bell links are pressed toward the pair of first operation ropes to lock the set of the first operation ropes. .

  (3) The fixed frame includes a plurality of display windows arranged in a horizontal direction, and the movable display panel includes display characters that can freely appear in these display windows, It is preferable that when the end portion is pulled, the display character appears in the display window, and when the other end portion of the second operation rope is pulled, the display character is hidden between the display windows.

  (4) It is preferable that the said display character is comprised with the light reflection material.

  (5) It is preferable that a pair of said 2nd operation rope has a triangle-shaped handle which can be engaged with the hook-shaped tip tool provided in the front-end | tip part of a long insulated operating rod in a terminal part.

  The pole switch according to the present invention includes at least a movable display plate disposed in an easily visible region of the switch body and a pair of second operation ropes for moving the movable display plate. By pulling the end of the rope, the movable display board can be moved in one direction, so that before operating the operation handle, the pole switch to be operated can be reliably secured from the ground. Can be specified.

It is a rear view which shows the structure of the pole switch by one Embodiment of this invention. It is a rear view which shows the structure of the pole switch by the said embodiment, and is a state figure which the movable display board with which a pole switch is equipped moved to one direction. It is a figure which shows the structure of the fixed frame body and movable display board with which the pole switch by the said embodiment is equipped, FIG. 3 (A) is a front view of a fixed frame body, FIG.3 (B) is a front view of a movable display board. It is. It is a right view which shows the structure of the pole switch by the said embodiment, and is a state figure which mounted the pole switch on the electric pole. It is a rear view which shows the whole structure of the pole switch by the said embodiment, FIG. 5 (A) is a state figure in which 1 set of 1st operation ropes were locked, FIG.5 (B) is 1 set of sets. It is the state figure by which the lock | rock of the 1st operation rope was cancelled | released. It is a front view which shows the structure of the operation rope fixing device with which the pole switch by the said embodiment is equipped, and is the state figure which locked the 1st operation rope of a set. It is a front view which shows the structure of the operation rope fixing device with which the pole switch by the said embodiment is equipped, and is the state figure which unlocked the 1st set of 1 operation rope. It is a rear view which shows the structure of the pole switch by a prior art. It is a front view which shows the structure of the pole switch by a prior art. It is a right view which shows the structure of the pole switch by a prior art, and is a state figure which mounted the pole switch on the electric pole. It is a front view which shows the structure of the operating rope fixing device with which the pole switch by a prior art is equipped.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[Configuration of pole switch]
Initially, the structure of the pole switch by one Embodiment of this invention is demonstrated.

  FIG. 1 is a rear view showing a configuration of a pole switch according to an embodiment of the present invention. FIG. 2 is a rear view showing the configuration of the pole switch according to the embodiment, and is a state diagram in which the movable display board provided in the pole switch has moved in one direction.

  3A and 3B are diagrams showing the configuration of the fixed frame body and the movable display board provided in the pole switch according to the embodiment, FIG. 3A is a front view of the fixed frame body, and FIG. 3B is a movable display. It is a front view of a board. FIG. 4 is a right side view showing the configuration of the pole switch according to the embodiment, and is a state diagram in which the pole switch is mounted on a utility pole.

  FIG. 5 is a rear view showing the overall configuration of the pole switch according to the embodiment, FIG. 5A is a state diagram in which a pair of first operation ropes are locked, and FIG. FIG. 3 is a state diagram in which a set of first operating ropes are unlocked.

  FIG. 6 is a front view showing a configuration of the operation rope fixing device provided in the pole switch according to the embodiment, and is a state diagram in which a pair of first operation ropes are locked. FIG. 7 is a front view showing a configuration of the operation rope fixing device provided in the pole switch according to the embodiment, and is a state diagram in which a set of the first operation rope is unlocked. In addition, since the effect | action is attached to the component which attached | subjected the code | symbol same as the code | symbol used by the prior art, description may be abbreviate | omitted.

(overall structure)
1 to 5, a pole switch 10 according to an embodiment of the present invention includes a box-shaped switch body 70, a pair of first operation ropes 7 a and 7 b, and an operation rope fixing device 3. I have. The switch body 70 is provided with a tiltable operation handle 7h on the front surface (see FIG. 4). The switch main body 70 has a second pointer 72n on the side opposite to the operation handle 7h.

  Referring to FIG. 4, the operation handle 7h has one end of a pair of first operation ropes 7a and 7b moored at both ends thereof (see FIG. 9). Referring to FIG. 4 or FIG. 5, the pair of first operating ropes 7a and 7b is suspended toward the ground. When one of the first operation ropes 7a is pulled, an electric circuit connected to the corresponding switch body 70 can be connected. When the other operation rope 7b is pulled, the electric circuit connected to the corresponding switch body 70 can be cut.

  Referring to FIG. 5, the operation rope fixing device 3 is supported by the utility pole P. Referring to FIG. 6 or FIG. 7, the operation rope fixing device 3 includes a case 30 that constitutes an outer shell thereof. The case 30 is fixed to the utility pole P using a band member 3b (see FIG. 5). Referring to FIG. 6 or FIG. 7, the case 30 has a pair of first operation ropes 7 a and 7 b inserted in the center.

  Referring to FIG. 6 or FIG. 7, the operation rope fixing device 3 has the lock mechanism 4 disposed inside the case 30. The lock mechanism 4 can lock or release the pair of first operating ropes 7 a and 7 b with respect to the case 30.

  1 to 5, the pole switch 10 includes a movable display board 5b and a pair of second operation ropes 6a and 6b. The movable display board 5 b is disposed on the back side of the switch body 70. The movable display board 5b is disposed so as to be movable with respect to the fixed frame 5a.

  Referring to FIG. 3B, the movable display board 5b has one end of a pair of second operation ropes 6a and 6b moored at both ends thereof. Referring to FIG. 5, the pair of second operation ropes 6a and 6b extends toward the operation rope fixing device 3 via the pair of guide pins 5p and 5p. 6 or 7, the set of second operation ropes 6a and 6b is inserted into the case 30 from both sides of the set of first operation ropes 7a and 7b. The other second operating rope 6 b is engaged with the lock mechanism 4.

  Referring to FIG. 5, when the end portion of one second operation rope 6a is pulled from the state shown in FIG. 5A, the movable display board 5b can be moved to the right with respect to the fixed frame 5a (see FIG. 5). (See FIG. 5B). Further, from the state shown in FIG. 5A, when the end of one second operation rope 6a is pulled, the lock mechanism 4 can be operated to release the pair of first operation ropes 7a and 7b. (See FIG. 7). Then, the operation handle 7h can be operated.

  Referring to FIG. 5, when the end of the other second operation rope 6b is pulled from the state shown in FIG. 5B, the movable display board 5b can be moved to the left with respect to the fixed frame 5a (see FIG. 5). (See FIG. 5A). When the other end of the second operation rope 6b is pulled from the state shown in FIG. 5B, the lock mechanism 4 is returned and the pair of first operation ropes 7a and 7b are locked. Yes (see FIG. 6). And operation of the operation handle 7h can be prevented.

  As described above, the pole switch 10 according to the embodiment includes the movable display board 5b disposed in the easily visible region of the switch body 70, and the pair of second operation ropes 6a and 6b that move the movable display board 5b. 6b, and pulling the end of one second operation rope 6a, the movable display board 5b is moved in one direction, so that the plurality of pole switches 10 are operated before the operation handle 7h is operated. From the above, it is possible to reliably identify the pole switch 10 to be operated from the ground.

(Configuration of lock mechanism)
Next, the configuration of the lock mechanism 4 according to the embodiment will be described. Referring to FIG. 6 or FIG. 7, the lock mechanism 4 includes a guide block 41 and a moving plate 42. The guide block 41 is disposed inside the case 30. The guide block 41 has a pair of guide pieces 41a and 41b formed at both ends. The pair of guide pieces 41a and 41b guide the first operation ropes 7a and 7b so as to be slidable from both sides of the pair of first operation ropes 7a and 7b.

  6 or 7, the moving plate 42 is slidably connected to a pair of slide shafts 42s and 42s arranged in parallel. The moving plate 42 holds a slide shaft 42s and a bearing 42b that slides. The moving plate 42 is guided by the pair of slide shafts 42s and 42s, and only linear movement is allowed.

  Referring to FIG. 6 or FIG. 7, one end of the moving plate 42 is sandwiched between a special bolt member 421 and a nut member 422. The special bolt member 421 has a through hole through which the other second operation rope 6b can be inserted at the center.

  Referring to FIG. 6 or FIG. 7, the special bolt member 421 has a male threaded portion with which the nut member 422 is screwed on the outer periphery, and a shaft formed with a tapered tapered portion provided with a slit in the outer peripheral direction. Has a part. When the nut member 422 is fastened to the shaft portion of the special bolt member 421, the diameter of the through hole of the tapered portion is reduced, and the other second operation rope 6b can be tightened from the outer peripheral direction. Then, the movable plate 42 can be moved by being dragged by the other second operation rope 6b.

  Referring to FIG. 6 or FIG. 7, the lock mechanism 4 includes an operation pin 43, a pair of bell links 44 and 44, and a pair of fixing pins 45 and 45. The operating pin 43 has a base end portion fixed to the central portion of the moving plate 42. The operation pin 43 protrudes in the direction in which the moving plate 42 moves.

  Referring to FIG. 6 or FIG. 7, one end of each of the pair of bell links 44 and 44 is rotatably connected to the tip of the operating pin 43. The pair of bell links 44, 44 are arranged such that the other end portions thereof can press the first operation ropes 7a, 7b toward the pair of first operation ropes 7a, 7b. Further, the pair of bell links 44 and 44 has an elongated hole 44h opened at the center.

  Referring to FIG. 6 or 7, the pair of fixing pins 45 and 45 are erected from the guide block 41. The pair of fixing pins 45 and 45 are slidably connected to the long hole 44 h of the bell link 44.

  When the end of one second operation rope 6a is pulled from the state shown in FIG. 6, as shown in FIG. 7, the other ends of the pair of bell links 44, 44 are a pair of first operations. The pair of first operation ropes 7a and 7b can be released away from the ropes 7a and 7b.

  When the end of the other second operation rope 6b is pulled from the state shown in FIG. 7, as shown in FIG. 6, the other ends of the pair of bell links 44, 44 are a pair of first operations. The pair of first operation ropes 7a and 7b can be locked by pressing toward the ropes 7a and 7b.

(Configuration of fixed frame and movable display board)
Next, the structure of the fixed frame 5a and the movable display board 5b according to the embodiment will be described. Referring to FIG. 4, the other end of the fixed frame 5 a is locked to the skirt 72. The fixed frame 5a has a plurality of display windows 5w arranged in the horizontal direction on one end surface (see FIG. 3A).

  Referring to FIG. 3, the movable display board 5 b has a display character described as “in operation” that can freely appear in the plurality of display windows 5 w (see FIG. 3B). Referring to FIG. 5, when the end of one second operation rope 6a is pulled, the display characters can appear in the display window 5w. Referring to FIG. 5, when the end of the other second operation rope 6b is pulled, the display characters can be hidden between the display windows 5w. That is, normally, the display sentence is hidden. The display character is preferably made of a light reflecting material.

(Configuration of a pair of second operation ropes)
Referring to FIGS. 5 to 7, the pair of second operating ropes 6a and 6b has a triangular handle 6t moored at their end portions. For example, as shown in FIG. 5, using a hook-shaped tip tool 9a provided at the tip of a long insulating operation rod 9, a handle 6t provided at the end of one second operation rope 6a is engaged. One of the second operation ropes 6a can be operated from the ground. A triangular handle 71k is also moored at the end of the pair of first operation ropes 7a and 7b.

[Action of column switch]
Next, the operation and effect of the pole switch 10 according to the embodiment will be described. Referring to FIGS. 1 to 5, the pole switch 10 includes a movable display board 5b disposed in an easily visible region of the switch body 70 and a set of second operating ropes for moving the movable display board 5b. 6a and 6b are provided at least.

  Referring to FIG. 5, when one end of one second operation rope 6a is pulled, the movable display board 5b is moved in one direction, so that a plurality of poles can be opened and closed before the operation handle 7h is operated. From the vessel 10, the column switch 10 to be operated can be reliably identified from the ground.

  With reference to FIG. 6 and FIG. 7, when the end of one second operation rope 6a is pulled, the pair of first operation ropes 7a and 7b can be unlocked in conjunction with this, and promptly The operation handle 7h can be operated.

  With reference to FIG. 5 (B), the display character displayed on the movable display board 5b is made of a light reflecting material, thereby facilitating confirmation at night.

The column switch according to the present invention can be expected to have the following effects.
(1) Power outages due to human errors can be reduced.
(2) Since it is not necessary to ascend to a utility pole in order to confirm the target pole switch, early restoration of the pole switch is possible.
(3) Forgetting to lock the first operating rope after operating the operating handle can be prevented.

DESCRIPTION OF SYMBOLS 3 Operation rope fixing device 4 Lock mechanism 5a Fixed frame 5b Movable display board 6a, 6b A set of 2nd operation ropes 7a, 7b A set of 1st operation ropes 7h Operation handle 10 Pole switch 30 Case 70 Body

Claims (5)

A box-shaped switch body with a tiltable control handle on one side;
A pair of first operating ropes mooring one end to both ends of the operating handle and extending toward the ground,
A case supported by a utility pole and inserted in the center of the set of the first operation ropes, and disposed inside the case, and the set of the first operation ropes is locked to the case or An operating rope fixing device having a locking mechanism to be released;
A movable display plate disposed on the opposite surface of the switch body and movable relative to the fixed frame;
One end is moored at both ends of the movable display plate, extends toward the operation rope fixing device, is inserted into the case from both sides of the pair of first operation ropes, and is engaged with the lock mechanism. A second operating line of pairs,
When one end of the second operation rope is pulled, the movable display plate is moved in one direction and the lock mechanism is operated to release the set of the first operation rope.
When the other end of the second operation rope is pulled, the movable display plate is moved in the other direction, and the lock mechanism is returned to lock the first operation rope. Upper switch. The locking mechanism is
A guide block which is arranged inside the case and has guide pieces formed on both ends thereof for slidably guiding the first operation rope from both sides of the set of the first operation rope;
A moving plate that is locked to one of the second operating ropes of one or the other, and that allows only a linear motion substantially parallel to a direction in which the pair of first operating ropes moves;
An operating pin that fixes the base end to the center of the moving plate and protrudes in the direction in which the moving plate moves;
One end portion is rotatably connected to the tip end portion of the operating pin, and the other end portion is disposed so as to be able to press the first operation rope toward the pair of first operation ropes. A pair of bell links opening
A pair of fixing pins erected from the guide block and slidably connected to the elongated holes of the bell link,
When one end of the second operation rope is pulled, the other ends of the pair of bell links are separated from the set of first operation ropes to release the set of first operation ropes. ,
When the other end of the second operation rope is pulled, the other ends of the pair of bell links are pressed toward the first operation rope. The pole switch according to claim 1, which is locked. The fixed frame includes a plurality of display windows arranged in a horizontal direction,
The movable display board includes display characters that can freely appear in these display windows,
When one end of the second operation rope is pulled, the display character appears in the display window,
The pole switch according to claim 1 or 2, wherein when the end of the other second operation rope is pulled, the display character is hidden between the display windows.   The pole switch according to claim 3, wherein the display characters are made of a light reflecting material.   A pair of said 2nd operation rope has a triangle-shaped handle which can be engaged with the hook-shaped tip tool provided in the front-end | tip part of a long insulated operating rod in the terminal part. The on-post switch as described.

Images