JP2016189292A - Switch for construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch for construction that can be installed temporarily in safety, in a high place such as a power pole.SOLUTION: A switch 10 includes a switch body 1 and an operation handle 1h. Further, the switch 10 includes a set of bushing guards 2, 2, and movable knobs 3, 3. The movable knob 3 is coupled ascendably with the bushing guard 2. In a state where the operation handle 1h is tilting to the one end 1a side, when the set of movable knobs 3, 3 are lifted, the extension 31b of one movable knob 3 abuts against one end 1a side of the operation handle 1h and blocks lifting of one movable knob 3. In a state where the operation handle 1h is tilting to the other end 1a side, when the set of movable knobs 3, 3 are lifted, the extension 31b of one movable knob 3 can pass without being blocked by one end 1a side of the operation handle 1h, and thereby the switch 10 can be installed temporarily in "off" state, in a high place such as a power pole P.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a construction switch. In particular, the present invention relates to a structure of a construction switch that can be temporarily installed by pulling the construction switch to a high place such as a utility pole only when the operation handle arranged on the front surface of the construction switch is in the “OFF” state.

  For example, when carrying out electrical work such as replacement of distribution lines, replacement of support insulators, replacement of transformers, etc. on high-voltage distribution lines, temporarily install a construction switch on the power pole in the construction section and install a temporary bypass circuit. Forming. And by this bypass circuit, power transmission is continued even during electrical work.

  By the way, a construction switch is normally provided as a construction equipment in an electric power company or a sales office of a construction company. When there is construction work, a construction switch is mounted on the work vehicle and transported to the construction site. A construction switch is temporarily installed on the utility pole in the construction section, and power transmission continues. After the electrical work is completed, the work switch is removed from the utility pole, and the work switch is mounted on a work vehicle and transported to a sales office.

  As described above, since the construction switch is frequently transported or temporarily installed on the utility pole, a construction switch having a simple configuration is disclosed that is configured to reduce damage when transported or lifted to and from the utility pole. (For example, refer to Patent Document 1).

  The construction switch according to Patent Document 1 includes a pair of bushing guards for protecting the bushings protruding from both side surfaces of a rectangular parallelepiped switch body. The bushing guard is framed by a plurality of rod-like members. In the construction switch according to Patent Document 1, the bushing guard is unevenly arranged on the back side of the switch body, so that the construction switch can be transported stably, and during lifting or hanging work accompanying column work The construction switch can be protected from injury.

Japanese Utility Model Publication No. 55-55936

  FIG. 6 is a perspective view showing a configuration of a construction switch according to the prior art. FIG. 7 is a front view showing a construction of a construction switch according to the prior art, and is a state diagram in which the operation handle is tilted to the “ON” state. FIG. 8 is a right side view showing a construction of a construction switch according to the prior art, and is a state diagram in which the construction switch is installed on a utility pole.

  FIG. 9 is a bottom view showing a configuration of a construction switch according to the prior art. FIG. 10 is a front view showing a configuration of a construction switch according to the prior art, and is a state diagram in which an operation handle is tilted to a “cut” state.

  Referring to FIGS. 6 to 10, a conventional construction switch (hereinafter abbreviated as a switch) 7 includes a rectangular parallelepiped switch body 70 and a plurality of bushings 71t and 72t. The switch body 70 includes a tiltable operation handle 7h on the front surface. The operation handle 7h has a pointer 71n fixed at the center thereof. The pointer 71n protrudes toward the bottom surface side of the switch body 70. One bushing 71t can be connected to a power supply side electric wire. A load-side electric wire can be connected to the other bushing 72t.

  Referring to FIG. 6 or FIG. 7 and FIG. 10, the operation handle 7h can anchor a pair of operation ropes (not shown) at both ends thereof. In a state where the switch 7 is installed on the utility pole P (see FIG. 8), the set of operating ropes is suspended toward the ground. When one operation rope is pulled, the operation handle 7h can be tilted toward the one end portion 7a (see FIG. 7) so that the tip of the pointer 71n is directed to the “ON” display (see FIG. 9). 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.

  Referring to FIG. 10, when the other operation rope (not shown) is pulled, the operation handle 7 h can be tilted toward the other end 7 b so that the tip of the 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. Hereinafter, the electrical switch disposed inside the switch body 70 is referred to as an internal switch.

  6 to 10, the switch 7 includes a pair of rubber legs 73 and a pair of bushing guards 74 and 74 with handles 74a. The four rubber legs 73 are fixed to the bottom of the switch main body 70 through fixing brackets. The bushing guard 74 is framed by a plurality of rod-like members. The handle 74 a is formed on the bushing guard 74.

  With reference to FIG. 6 to FIG. 8, the switch 7 can be transported by gripping the pair of handles 74 a and 74 a. The pair of bushing guards 74 and 74 project from both side surfaces of the switch body 70. The pair of bushing guards 74 and 74 prevent the plurality of bushings 71t and 72t from colliding with an obstacle and being damaged.

  Referring to FIG. 10, one end of the bifurcated rope R is moored to a pair of handles 74 a and 74 a, and the other end of the rope R is wound up with a winch (not shown) or the like. The switch 7 can be lifted up to the height.

  Referring to FIG. 8 or FIG. 9, the switch main body 70 includes a pair of hook fittings 75 and 75 on the back surface. Referring to FIG. 8, the pole bracket 8 is fixed to the utility pole P with a chain member. The post fitting 8 has a locking hole on the tip side. The switch 7 can be temporarily installed on the utility pole P by locking the hook metal fitting 75 on the upper side in the lock hole of the pole metal fitting 8.

  Referring to FIG. 6 or FIG. 8 and FIG. 9, the switch body 70 includes a ground terminal 76 made of a wing nut at the lower part of one side surface. On the other hand, referring to FIG. 7, the switch body 70 includes a gas pressure lowering lock display device 77 at the lower part of the other side surface. When the arc extinguishing gas filled in the switch main body 70 leaks, the gas pressure lowering lock display device 77 detects this leak and locks the opening / closing operation of the operation handle 7h, and monitors the leakage state. And so on.

  Referring to FIGS. 6 to 9, when the switch 7 is stored in a transport rack (not shown) and is transported by a work vehicle, the pointer 71n is protected so that the internal switch is not damaged by vibration. It is defined that the operation handle 7h is tilted toward the one end portion 7a so that the distal end portion is directed to the “ON” display.

On the other hand, after arriving at the construction site, the following work procedure is defined for handling the switch 7.
(1) After the switch 7 is taken out of the transport storage rack (not shown), the operation handle 7h is tilted toward the other end 7b so that the tip of the pointer 71n is directed to the indication of “off” ( (See FIG. 10).
(2) Before lifting the switch 7 on the utility pole P, confirm that the tip of the pointer 71n is facing the “OFF” display.
(3) After the switch 7 is temporarily installed on the utility pole P, it is confirmed that the tip of the pointer 71n is directed toward “OFF”.
(4) Before connecting the power supply side electric wire or the load side electric wire to the plurality of bushings 71t and 72t, confirm that the tip of the pointer 71n is directed to the indication of “off”.

  As described above, the switch 7 confirms the “cut” state of the pointer 71n a plurality of times after the switch 7 is taken out from the carrying rack. However, referring to FIG. 6 to FIG. 8, the switch 7 can be lifted even when the pointer 71n is in the “ON” state, so the switching of the operation handle 7h is forgotten and the pointer 71n is in the “ON” state. Therefore, there is a concern of connecting the power supply side wire or the load side wire. There is a need for a construction switch that can be lifted only when the operating handle 7h is in the “off” state without depending on the operator's attention. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such problems, and the construction switch is raised to a high place such as a utility pole only when the operation handle arranged on the front surface of the construction switch is in the “OFF” state. The purpose is to provide a safe construction switch that can be temporarily installed.

  The present inventors have arranged a pair of rectangular frame-shaped movable handles on both sides of the switch body of the construction switch, and moored one end of the bifurcated rope to the pair of movable handles. When the operating handle is tilted to one end so that the internal switch of the switch body is in the “ON” state when the rope is pulled up, one of the movable handles is blocked by the operating handle. When the operating handle is tilted to the other end so that the internal switch of the switch body is in the “off” state, one movable handle is not blocked by the operating handle. It has been found that the construction switch can be safely installed on the utility pole by being configured to pass freely, and based on this, the following new construction switch has been invented.

  (1) A construction switch according to the present invention is a construction switch that can be temporarily installed on a utility pole, and is a rectangular parallelepiped switch body having a plurality of bushings projecting from both sides, to which electric wires can be connected, and the switch When the switch is tilted to the lower part of the front face of the switch body and tilted to one end, the internal switch of the switch body is in the “on” state, and when tilted to the other end, the switch of the switch body is An operation handle that is in a “cut” state and a bushing guard that surrounds and protects the periphery of the plurality of bushings, each having a pair of pipe members that extend in the vertical direction and are arranged substantially in parallel at predetermined intervals. These pipe members have a pair of bushing guards supported on both sides of the switch body, and rod-like members inserted through the pipe members on both sides, and are connected to the bushing guards so as to be movable up and down. One A rectangular frame-shaped movable handle, and the movable handle is disposed at a predetermined interval from a handle member that bridges the upper ends of the pair of rod-shaped members, and a lower end surface of the pipe member, A bar member that bridges the lower ends of the pair of rod-shaped members, and one of the bar members has an extending portion that extends downward on one end side of the operation handle, and the operation When one of the movable handles is pulled up in a state where the handle is tilted toward one end, the extending portion is blocked on one end of the operation handle, and the operation handle is tilted toward the other end. When one of the movable handles is pulled up, the extended portion passes through the one end of the operation handle without being blocked.

  (2) It further includes a substantially rectangular plate-like member fixed to the upper surface of the switch body and the pipe members fixed at the four corners, and the plate-like member has bent gripped portions that are easily gripped with both hands at both ends. It is preferable to have.

  (3) It is preferable that the bar member is in contact with the lower end edges of the pair of pipe members to define the rising amount of the movable handle.

  (4) It is preferable that the said handle member has the collar part which contact | abuts to the upper end edge of the said pipe member, and prevents the fall of the said movable type handle in both ends.

  In the construction switch according to the present invention, when the operation handle is tilted toward one end so that the internal switch of the switch body is in the “on” state, when one set of movable handles is pulled up, one movable The operation handle was tilted to the other end so that the mold handle abuts on one end of the operation handle to prevent one of the movable handle from being raised and the internal switch of the switch body is turned off. In a state, when one set of movable handles is pulled up, one movable handle can pass without being blocked to one end of the operation handle, so that the construction switch can be temporarily installed on the utility pole in the “off” state. .

It is a perspective view which shows the structure of the switch for construction by one Embodiment of this invention. It is a front view which shows the structure of the construction switch by the said embodiment, and is the state figure which inclined the operation handle to the state of "on". It is a right view which shows the structure of the construction switch by the said embodiment. It is a bottom view which shows the structure of the construction switch by the said embodiment. It is a front view which shows the structure of the construction switch by the said embodiment, and is the state figure which inclined the operation handle to the state of "OFF". It is a perspective view which shows the structure of the switch for construction by a prior art. It is a front view which shows the structure of the construction switch by a prior art, and is the state figure which inclined the operation handle to the state of "on". It is a right view which shows the structure of the construction switch by a prior art, and is a state figure which installed the construction switch in the utility pole. It is a bottom view which shows the structure of the construction switch by a prior art. It is a front view which shows the structure of the construction switch by a prior art, and is a state figure which inclined the operation handle to the state of "OFF".

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

  FIG. 1 is a perspective view showing a configuration of a construction switch according to an embodiment of the present invention. FIG. 2 is a front view showing the construction of the construction switch according to the embodiment, in which the operation handle is tilted to the “ON” state.

  FIG. 3 is a right side view showing the configuration of the construction switch according to the embodiment. FIG. 4 is a bottom view showing the construction of the construction switch according to the embodiment. FIG. 5 is a front view showing the construction of the construction switch according to the embodiment, in which the operation handle is tilted to the “OFF” state.

  In addition, since the effect | action of the component which attached | subjected the code | symbol same as the code | symbol used with the prior art makes the same action, description may be abbreviate | omitted below.

(overall structure)
1 to 5, a construction switch (hereinafter abbreviated as a switch) 10 according to an embodiment of the present invention includes a rectangular parallelepiped switch body 1 and an operation handle 1h. The switch 10 includes a pair of bushing guards 2 and 2, a pair of rectangular frame-shaped movable handles 3 and 3, and a substantially rectangular plate-like member 4.

  Referring to FIGS. 1 to 5, the switch body 1 has a plurality of bushings 11 t and 12 t protruding from both side surfaces. An electric wire on the power source side can be connected to one bushing 11t. A load-side electric wire can be connected to the other bushing 12t.

  Referring to FIGS. 1 to 5, the operation handle 1 h is tiltably disposed on the lower front surface of the switch body 1. When the operation handle 1h is tilted toward the one end 1a (see FIG. 2), an internal switch (not shown) of the switch body 1 can be switched to the “ON” state. When the operation handle 1h is tilted toward the other end 1b (see FIG. 5), the internal switch (not shown) of the switch body 1 can be switched to the “OFF” state.

  1 to 5, one bushing guard 2 surrounds the plurality of bushings 12t. One bushing guard 2 protects the plurality of bushings 12t from colliding with an obstacle and being damaged. Similarly, the other bushing guard 2 surrounds the plurality of bushings 11t. The other bushing guard 2 protects the plurality of bushings 11t from colliding with an obstacle and being damaged.

  1 to 5, the bushing guard 2 includes a pair of pipe members 2p and 2p arranged at a predetermined interval. These pipe members 2p and 2p are arranged substantially parallel so that their axial centers extend in the vertical direction. Further, these pipe members 2p and 2p are supported on both side surfaces of the switch body 1.

  Referring to FIGS. 1 to 5, the movable handle 3 includes rod-like members 3 r inserted through the pipe member 2 p on both sides. The movable handle 3 is connected to the bushing guard 2 so as to be movable up and down.

  1 to 5, the movable handle 3 includes a handle member 3h and a bar member 3b. The handle member 3h bridges the upper ends of the pair of rod-like members 3r and 3r. The bar member 3b bridges the lower ends of the pair of rod-like members 3r and 3r. The bar member 3b is disposed with a predetermined distance from the lower end surface of the pipe member 2p (see FIGS. 1 to 3).

  Referring to FIGS. 1 to 5, one bar member 3b has an extending portion 31b. The extending portion 31b extends downward on the one end 1a side of the operation handle 1h.

  With reference to FIG. 1 or FIG. 2, when one movable handle 3 is pulled up in a state where the operation handle 1h is tilted toward the one end 1a, the extending portion 31b comes into contact with the one end 1a of the operation handle 1h. Thus, the lifting of one movable handle 3 is prevented.

  On the other hand, referring to FIG. 5, when one movable handle 3 is pulled up with the operation handle 1h tilted toward the other end 1b, the extending portion 31b is blocked on the one end 1a side of the operation handle 1h. You can pass without

(Configuration of switch body)
Next, the configuration of the switch body 1 according to the embodiment will be described. 1 to 5, the switch body 1 includes a pair of rubber legs 13 and a pair of hook fittings 15 and 15. The four rubber legs 13 are fixed to the bottom of the switch body 1 through fixing brackets. The rubber legs 13 and the rubber legs 73 are the same, but are distinguished by changing the reference numerals for convenience of explanation.

  Referring to FIG. 3, the pair of hook fittings 15 and 15 are fixed to the back surface of the switch body 1. With reference to FIG. 3 or FIG. 8, the switch 10 can be temporarily installed on the utility pole P by locking the hook member 15 on the upper side in the locking hole of the pole member 8. Note that the hook metal fitting 15 and the hook metal fitting 75 are the same, but for the convenience of explanation, the reference numerals are changed for distinction.

  Referring to FIG. 1 or FIG. 3 and FIG. 4, the switch body 1 includes a ground terminal 16 made of a wing nut at the lower part of one side surface. On the other hand, referring to FIG. 2, the switch body 1 includes a gas pressure lowering lock display device 17 at the lower part of the other side surface. When the arc extinguishing gas filled in the switch main body 1 leaks, the gas pressure lowering lock display device 17 detects this leak and locks the opening / closing operation of the operation handle 1h, and monitors the leakage state. And so on. The ground terminal 16 and the gas pressure lowering lock display device 17 are the same as the ground terminal 76 and the gas pressure lowering lock display device 77, but for the sake of convenience of explanation, the symbols are changed for distinction.

  Referring to FIG. 1 or FIG. 2 and FIG. 4 or FIG. 5, the switch body 1 includes a plurality of rod-like support members 111. One end of the support member 111 is joined to the lower part of the side surface of the switch body 1 by welding. The other end of the support member 111 is joined to the outer periphery of the lower portion of the pipe member 2p by welding.

  On the other hand, referring to FIG. 1, the outer periphery of the upper part of the pipe member 2p is joined to four corners of a plate-like member 4 described later by welding. Thus, the switch main body 1 firmly supports the bushing guard 2 on the side surface by the plurality of support members 111 and the plate-like member 4. Referring to FIG. 1 or FIG. 3, the pair of pipe members 2p and 2p are reinforced by lateral members 211 whose both ends are joined to the outer periphery of the pipe member 2p by welding in order to maintain a predetermined interval. Yes.

(Operation handle configuration)
Next, the configuration of the operation handle 1h according to the embodiment will be described. Referring to FIGS. 1 to 5, the operation handle 1h has a pointer 11n fixed at the center thereof. The pointer 11n protrudes toward the bottom side of the switch body 1 (see FIG. 4).

  Referring to FIG. 1 or FIG. 2 and FIG. 5, the operation handle 1h can anchor a pair of operation ropes (not shown) at both ends thereof. In a state where the switch 10 is installed on the utility pole P (see FIG. 8), the set of operating ropes is suspended toward the ground. When one of the operation ropes is pulled, the operation handle 1h can be tilted toward the one end 1a (see FIG. 2) so that the tip of the pointer 11n is directed to the “ON” display (see FIG. 4). And the electric switch (not shown) arrange | positioned inside the switch main body 1 can be made into a connection state, and an electric circuit can be connected.

  With reference to FIG. 5, when the other operation rope (not shown) is pulled, the operation handle 1 h can be tilted toward the other end 1 b so that the tip of the pointer 11 n is directed to “OFF”. And the electric switch (not shown) arrange | positioned inside the switch main body 1 can be made into a disconnection state, and an electric circuit can be cut | disconnected. Note that the operation handle 1h and the operation handle 7h are the same, but for the sake of convenience of description, the reference numerals are changed for distinction.

(Composition of movable handle)
Next, the configuration of the movable handle 3 according to the embodiment will be described. Referring to FIGS. 1 to 5, the movable handle 3 is framed in a rectangular shape by a pair of rod-like members 3r and 3r, a handle member 3h, and a bar member 3b. The pair of rod-shaped members 3r and 3r have their lower end surfaces joined to the bar member 3b by welding.

  Referring to FIG. 1, the rod-shaped member 3r has a male screw portion 31r at its upper end. On the other hand, the handle member 3h includes a handle portion 31h and a pair of flange portions 31f and 31f. The handle portion 31h bends both ends of the rod-like member substantially at a right angle. The pair of flange portions 31f and 31f are joined to both end surfaces of the handle portion 31h by welding. The pair of rod-shaped members 3r and 3r and the handle member 3h can be integrated by inserting the male screw portion 31r into the hole opened in the flange portion 31f and fastening the nut member.

  In the embodiment shown in FIGS. 1 to 3, the flange portion 31 f abuts on the upper end edge of the pipe member 2 p to prevent the movable handle 3 from falling off. On the other hand, referring to FIG. 5, the bar member 3 b is in contact with the lower end edges of the pair of pipe members 2 p and 2 p, and defines the rising amount of the movable handle 3.

(Configuration of plate member)
Next, the configuration of the plate-like member 4 according to the embodiment will be described. With reference to FIG. 1 or FIG. 2 and FIG. 4 or FIG. 5, the plate-like member 4 is fixed to the upper surface of the switch body 1. Referring to FIG. 1 or FIG. 3, the plate-like member 4 has bent gripping portions 41 and 41 that are easily gripped with both hands at both ends.

  With reference to FIG. 1 or FIG. 3, a pair of holding | gripping part 41 * 41 can be hold | gripped with both hands, and the switch 10 can be stored in a storage rack (not shown). The switch 10 can be taken out from the carrying rack (not shown) by gripping the pair of grips 41 and 41 with both hands.

[Operation of construction switch]
Next, the operation and effect of the switch 10 will be described while describing the operation of the switch 10 according to the embodiment.

  Referring to FIG. 5, one end of the bifurcated rope R is moored to a pair of movable handles 3 and 3, and the other end of the rope R is wound up with a winch (not shown). The switch 10 can be pulled up to the height of the utility pole P (see FIG. 8).

  With reference to FIG. 1 or FIG. 2 and FIG. 3, in a state where the operation handle 1h is tilted toward the one end 1a so that the internal switch of the switch body 1 is in the “on” state, a set of movable handles When 3.3 is pulled up, the extending portion 31b of one movable handle 3 comes into contact with the one end portion 1a side of the operation handle 1h, and the one movable handle 3 is prevented from rising.

  On the other hand, referring to FIG. 5, when the operation handle 1 h is tilted toward the other end 1 b so that the internal switch of the switch body 1 is in the “off” state, a pair of movable handles 3. Is lifted, the extending portion 31b of one movable handle 3 can pass through without being blocked to the one end 1a side of the operation handle 1h, so that the switch 10 can be temporarily installed on the utility pole P in the "OFF" state.

  As described above, referring to FIGS. 1 to 5, the switch 10 is configured such that the switch 10 is placed at a high place such as the utility pole P only when the operation handle 1 h arranged on the front surface of the switch body 1 is in the “OFF” state. It is safe because it can be temporarily installed.

  Since the construction switch according to the present invention has a structure that is difficult to pull up to a high place such as a utility pole when the operation handle is in the “on” state, the electric wire is connected only when the operation handle is in the “off” state. Therefore, the safety of the worker can be ensured. Moreover, the construction work can be carried out reliably, and the reliability of power supply can be improved.

1 Switch body 1a One end (one end of the operation handle 1h)
1b The other end (the other end of the operation handle 1h)
1h Operation handle 2 Bushing guard 2p · 2p A pair of pipe members 3 A movable handle 3b Bar member 3h A handle member 3r · 3r A pair of rod-like members 10 Switch (construction switch)
11t bushing 12t bushing 31b Extension part P Utility pole

Claims (4)

It is a construction switch that can be temporarily installed on a power pole,
A rectangular parallelepiped switch body with a plurality of bushings protruding from both sides, to which wires can be freely connected;
The switch body is tiltably disposed at the lower front surface of the switch body. When the switch body is tilted to one end, the internal switch of the switch body is turned on, and when the switch is tilted to the other end side, An operation handle that switches off,
A bushing guard that surrounds and protects a plurality of the bushings, and has a pair of pipe members whose axial centers extend in the vertical direction and are arranged substantially in parallel at a predetermined interval. A set of bushing guards supported on both sides of the main body,
A pair of rectangular frame-shaped movable handles having rod-like members inserted into the pipe member on both sides and connected to the bushing guard so as to be movable up and down;
The movable handle is
A handle member that bridges the upper ends of the pair of rod-shaped members;
A bar member disposed at a predetermined interval from the lower end surface of the pipe member and bridging the lower end portions of the pair of rod-shaped members;
One of the bar members has an extending portion that extends downward on one end side of the operation handle,
When the one of the movable handles is pulled up in a state where the operation handle is tilted toward one end, the extending portion is blocked on the one end of the operation handle,
A construction switch in which, when one of the movable handles is pulled up in a state where the operation handle is tilted toward the other end, the extending portion passes through the one end of the operation handle without being blocked. It is fixed to the upper surface of the switch body, and further comprises a substantially rectangular plate-like member that fixes the pipe member at four corners,
The construction switch according to claim 1, wherein the plate-like member has bent holding portions at both ends that are easy to hold with both hands.   The construction switch according to claim 1 or 2, wherein the bar member is in contact with a lower end edge of the pair of pipe members and defines an amount of rise of the movable handle.   The construction switch according to any one of claims 1 to 3, wherein the handle member has hooks at both ends that come into contact with an upper end edge of the pipe member and prevent the movable handle from falling off.

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