JP6852620B2 - Misoperation prevention device - Google Patents

Description

The present invention relates to a device attached to a control panel of an escalator in order to prevent erroneous operation of a switch.

An escalator is described in Patent Document 1. In the escalator described in Patent Document 1, an upper machine room is formed in the main frame. A motor and a control panel are provided in the upper machine room. The control panel is equipped with a switch.

JP-A-2017-57050

The maintenance staff of the escalator enters the machine room and inspects the motor and so on. The machine room of the escalator where the control panel is installed is not a large space. For this reason, during the inspection in the machine room, the maintenance staff's body may hit the switch provided on the control panel, and the switch may be turned on or off unintentionally.

The present invention has been made to solve the above-mentioned problems. An object of the present invention is to provide an erroneous operation prevention device capable of preventing a switch provided in a control panel of an escalator from being operated unintentionally.

The erroneous operation prevention device according to the present invention is a device attached to a control panel of an escalator including a housing, a cover that closes the front surface of the housing, and a switch that can be operated from the front side of the cover. The erroneous operation prevention device has a fixing portion that is fastened to the housing together with the cover by a bolt for fixing the cover to the housing, and a first protrusion that is arranged at a position closer to the bolt than the switch and protrudes forward from the front surface of the cover. A first connecting portion that connects the portion, the fixing portion, and the first protruding portion, a second protruding portion that is arranged at a position far from the bolt from the switch and projects forward from the front surface of the cover, the first protruding portion, and the second A second connecting portion that connects the protruding portions and partially faces the upper surface of the housing is provided.

The erroneous operation prevention device according to the present invention includes a housing, a cover that closes the front surface of the housing, a switch that can be operated from the front side of the cover, and a plug that is adjacent to the switch and can be inserted from the front side of the cover. It is a device that can be attached to the control panel of an escalator equipped with a plug receiver. The erroneous operation prevention device has an insertion portion, and the insertion portion is fixed to the plug receiver by being inserted into the plug receiver, and the first protrusion protruding forward from the front surface of the cover and a position farther from the plug receiver than the switch. A second protrusion that projects forward from the front of the cover, and a connecting portion that connects the first and second protrusions so that the switch can be operated from above or from the front side of the cover. , Equipped with.

According to the erroneous operation prevention device according to the present invention, it is possible to prevent the switch provided on the control panel of the escalator from being operated unintentionally.

It is sectional drawing which shows the example of an escalator. It is a figure which shows the example of the control panel. It is a figure which shows the example of the erroneous operation prevention device in Embodiment 1. FIG. It is a front view of the erroneous operation prevention device shown in FIG. It is a top view of the erroneous operation prevention device shown in FIG. It is a figure which shows the state which the erroneous operation prevention device is attached to the control panel. It is the figure which looked at the erroneous operation prevention device attached to the control panel from the front. It is the figure which looked at the erroneous operation prevention device attached to the control panel from above. It is a figure which shows another example of the erroneous operation prevention device in Embodiment 1. FIG. It is a figure which shows the example of the erroneous operation prevention device in Embodiment 2. FIG. It is a top view of the erroneous operation prevention device shown in FIG. Indicates a state in which the erroneous operation prevention device is attached to the control panel. It is a figure which shows another example of the erroneous operation prevention device in Embodiment 2. FIG. It is a figure which shows another example of the erroneous operation prevention device in Embodiment 2. FIG.

The present invention will be described with reference to the accompanying drawings. Overlapping description will be simplified or omitted as appropriate. In each figure, the same reference numerals indicate the same parts or corresponding parts.

Embodiment 1.
FIG. 1 is a cross-sectional view showing an example of an escalator. First, the configuration of the escalator will be described with reference to FIG.

The escalator truss 1 is hung between the upper and lower floors. The escalator's own weight and load are supported by the truss 1. A machine room 2 and a machine room 3 are formed on the truss 1. The machine room 2 is a space formed at the upper end of the truss 1. The machine room 2 is closed by the manhole 4. The space above the manhole 4 is the upper entrance / exit 5. The machine room 3 is a space formed at the lower end of the truss 1. The machine room 3 is closed by a manhole 6. The space above the manhole 6 is the lower entrance / exit 7.

In the machine room 2, for example, a motor 8, a speed reducer 9, and a control panel 10 are provided. The motor 8 generates a driving force for driving the step 11. For example, the driving force of the motor 8 is transmitted to the sprocket 12 via the speed reducer 9. A step chain 13 to which the step 11 is connected is wound around the sprocket 12. Therefore, as the sprocket 12 rotates, the step 11 moves in the direction corresponding to the rotation direction of the sprocket 12. The motor 8 is controlled by the control panel 10.

FIG. 1 shows an example in which a control panel 10 or the like is provided in the upper machine room 2. The control panel 10 and the like may be provided in the lower machine room 3.

FIG. 2 is a diagram showing an example of the control panel 10. The control panel 10 includes, for example, a housing 14 and a cover 15. In the following, the control panel 10 and the like will be described with the direction indicated by the arrow X in FIG. 2 as the front.

The electrical equipment required for control is housed inside the housing 14. The cover 15 closes the front surface of the housing 14. The cover 15 is fixed to the housing 14 using bolts 16. FIG. 2 shows an example in which the bolt 16 is arranged at the upper right end portion and the upper left end portion of the cover 15. The bolt 16 may be arranged so as to penetrate the cover 15 from above. By loosening the bolt 16, the cover 15 can be removed from the housing 14. When the maintenance staff of the escalator inspects the electrical equipment provided inside the housing 14, the cover 15 is removed from the housing 14.

The control panel 10 includes a power switch 17, a plug receiver 18, a failure notification switch 19, and a plug receiver 20. The power switch 17, the plug receiver 18, the failure notification switch 19, and the plug receiver 20 are examples of devices that can be operated from the front surface 15a side of the cover 15 with the front surface of the housing 14 blocked by the cover 15. .. The plug receiver 18, the failure notification switch 19, and the plug receiver 20 are examples of devices that are frequently used when maintenance work is performed. Therefore, the plug receiver 18, the failure notification switch 19, and the plug receiver 20 are arranged at a height that is easy for maintenance personnel to use. For example, the plug receiver 18, the failure notification switch 19, and the plug receiver 20 are arranged along the upper edge of the cover 15. The power switch 17 is arranged at a position lower than the plug receiver 18 and the like.

The power switch 17 is a switch for switching the power supply to the control panel 10 on or off. When the power switch 17 is turned off, the power supply to the control panel 10 is cut off.

The failure notification switch 19 is a switch for switching the failure notification function on or off. For example, a lamp (not shown) for failure notification is installed in the manager's room of a building equipped with an escalator. If the failure notification switch 19 is on, the lamp lights up when a specific failure is detected. If the failure notification switch 19 is off, the lamp does not light even if a failure is detected. During normal operation on the escalator, the failure notification switch 19 is basically set to ON.

On the other hand, in the maintenance of the escalator, the maintenance staff may intentionally put the escalator in a failed state. At this time, it is not necessary to turn on the lamp. The maintenance staff turns off the failure notification switch 19 as necessary when performing maintenance on the escalator. At least a part of the failure notification switch 19 projects forward from the front surface 15a of the cover 15. The maintenance staff can operate the failure notification switch 19 from the front surface 15a side of the cover 15.

The plug receiver 18 is a so-called outlet. The plug receiver 18 is adjacent to the left side of the failure notification switch 19 when the cover 15 is viewed from the front surface 15a side. The maintenance person can insert the plug into the plug receiver 18 from the front surface 15a side of the cover 15. When the plug is inserted into the plug receiver 18, power is supplied from the control panel 10 to the device to which the plug is connected.

The plug receiver 20 is for inserting a plug connected to the maintenance terminal. The maintenance terminal is a terminal used by maintenance personnel to maintain the escalator. The plug receiver 20 is arranged on the right side of the failure notification switch 19 when the cover 15 is viewed from the front surface 15a side. The maintenance staff can insert the plug of the maintenance terminal into the plug receiver 20 from the front surface 15a side of the cover 15. When the plug is inserted into the plug receiver 20, information can be transmitted and received between the control panel 10 and the maintenance terminal.

The height of the upper end of the control panel 10 is often the same as the height at which the buttocks of a person are arranged. Therefore, if the maintenance staff performs maintenance in the machine room 2 while the control panel 10 is in the state shown in FIG. 2, the buttocks of the maintenance staff may come into contact with the failure notification switch 19. Hereinafter, a device for preventing the failure notification switch 19 from being operated unintentionally will be described.

FIG. 3 is a diagram showing an example of the erroneous operation prevention device 21 according to the first embodiment. FIG. 4 is a front view of the erroneous operation prevention device 21 shown in FIG. FIG. 5 is a plan view of the erroneous operation prevention device 21 shown in FIG. The erroneous operation prevention device 21 includes, for example, a fixing portion 22, a protruding portion 23, a protruding portion 24, a connecting portion 25, and a connecting portion 26. 3 to 5 show an example in which the erroneous operation prevention device 21 is formed of a plate-shaped member.

The erroneous operation prevention device 21 is attached to the control panel 10 in order to prevent the body of the maintenance worker in the machine room 2 from coming into contact with the failure notification switch 19. The erroneous operation prevention device 21 may be attached to the control panel 10 only when the maintenance staff maintains the escalator. The erroneous operation prevention device 21 may be always attached to the control panel 10.

FIG. 6 is a diagram showing a state in which the erroneous operation prevention device 21 is attached to the control panel 10. FIG. 7 is a front view of the erroneous operation prevention device 21 attached to the control panel 10. FIG. 8 is a view of the erroneous operation prevention device 21 attached to the control panel 10 as viewed from above.

The fixing portion 22 is a portion fixed to the control panel 10. A through hole 22a is formed in the fixing portion 22. The fixing portion 22 is arranged so as to face the front surface 15a of the cover 15. The fixing portion 22 is fastened together with the cover 15 to the housing 14 by bolts 16 for fixing the cover 15 to the housing 14.

The protrusions 23 and 24 are arranged on both sides of the failure notification switch 19 when the cover 15 is viewed from the front surface 15a side. For example, the protrusion 23 is arranged so as to be adjacent to the left side of the plug receiver 18 when the cover 15 is viewed from the front surface 15a side. That is, the protruding portion 23 is arranged at a position closer to the bolt 16 for fixing the fixing portion 22 than the failure notification switch 19. The protrusion 23 is arranged so as to face the front surface 15a of the cover 15. The projecting portion 23 is arranged so as to project forward from the front surface 15a of the cover 15. The protrusion height of the protrusion 23 from the front surface 15a is larger than the protrusion height of the failure notification switch 19 from the front surface 15a.

The protrusion 24 is arranged so as to be adjacent to the right side of the failure notification switch 19 when the cover 15 is viewed from the front surface 15a side. That is, the protruding portion 24 is arranged at a position farther from the bolt 16 for fixing the fixing portion 22 than the failure notification switch 19. The protrusion 24 is arranged so as to face the front surface 15a of the cover 15. The projecting portion 24 is arranged so as to project forward from the front surface 15a of the cover 15. The protrusion height of the protrusion 24 from the front surface 15a is larger than the protrusion height of the failure notification switch 19 from the front surface 15a.

The side surface 23a of the protrusion 23 faces the protrusion 24 side. The side surface 24a of the protrusion 24 faces the protrusion 23 side. The side surface 23a and the side surface 24a face each other. The failure notification switch 19 is arranged between the side surface 23a and the side surface 24a when the cover 15 is viewed from the front surface 15a side. In the example shown in FIGS. 6 to 8, the plug receiver 18 is adjacent to the failure notification switch 19. Therefore, both the plug receiver 18 and the failure notification switch 19 are arranged between the side surface 23a and the side surface 24a.

The connecting portion 25 connects the fixed portion 22 and the protruding portion 23. The connecting portion 25 is arranged, for example, in front of the front surface 15a of the cover 15.

The connecting portion 26 connects the protruding portion 23 and the protruding portion 24. The connecting portion 26 connects the protruding portion 23 and the protruding portion 24 so that the failure notification switch 19 can be visually recognized when the cover 15 is viewed from the front surface 15a side. The connecting portion 26 connects the protruding portion 23 and the protruding portion 24 so that the failure notification switch 19 can be operated from above or from the front surface 15a side of the cover 15.

In the example shown in FIGS. 3 to 5, the connecting portion 26 is a U-shaped plate-shaped member. The connecting portion 26 extends from the connecting portion with the protruding portion 23 to the control panel 10 side. The connecting portion 26 extends from the connecting portion with the protruding portion 24 toward the control panel 10. A part of the connecting portion 26 is arranged above the housing 14 of the control panel 10 and faces the upper surface 14a of the housing 14. For example, the above-mentioned part of the connecting portion 26 comes into contact with the upper surface 14a of the housing 14.

In the example shown in this embodiment, the protrusions 23 and the protrusions 24 are arranged on both sides of the failure notification switch 19. The protrusion height of the protrusion 23 from the front surface 15a is larger than the protrusion height of the failure notification switch 19 from the front surface 15a. The protrusion height of the protrusion 24 from the front surface 15a is larger than the protrusion height of the failure notification switch 19 from the front surface 15a. Therefore, when the maintenance worker's body in the machine room 2 approaches the failure notification switch 19, the maintenance worker's body hits the protrusion 23 and the protrusion 24 before coming into contact with the failure notification switch 19. If the erroneous operation prevention device 21 is attached to the control panel 10, it is possible to prevent the failure notification switch 19 from being operated in an unintended place.

The fixing portion 22 is fastened together with the cover 15 to the housing 14 by bolts 16. In the example shown in this embodiment, the erroneous operation prevention device 21 can be firmly fixed to the control panel 10. Further, a dedicated member is not required to fix the fixing portion 22 to the control panel 10. Therefore, the erroneous operation prevention device 21 can be easily attached to the existing control panel 10.

Bolts 16 for fixing the cover 15 to the housing 14 are often arranged at the corners of the control panel 10. Therefore, in the example shown in the present embodiment, the erroneous operation prevention device 21 is provided with a connecting portion 25 for connecting the fixing portion 22 and the protruding portion 23. When the head portion of the bolt 16 is arranged on the housing 14, the fixing portion 22 is also arranged on the housing 14. Also in this case, the connecting portion 25 connects the fixed portion 22 and the protruding portion 23. For example, the connecting portion 25 is arranged from above the housing 14 to the front of the cover 15.

A part of the connecting portion 26 is arranged above the housing 14 and faces the upper surface 14a of the housing 14. Therefore, the connecting portion 26 is supported from below by the housing 14. Even when the bolt 16 and the failure notification switch 19 are separated from each other, it is possible to prevent the end portion of the erroneous operation prevention device 21 on the protruding portion 24 side from shifting downward.

As described above, the erroneous operation prevention device 21 is also attached to the existing control panel 10. The position of the failure notification switch 19 differs depending on the model of the escalator. Further, depending on the model of the escalator, the control panel 10 is provided with a switch other than the failure notification switch 19. Therefore, it is preferable that the protrusions 23 and 24 can be adjusted in position according to the positions of these switches.

For example, the connecting portion 26 is formed by connecting the side surface 23a of the protruding portion 23 and the side surface 24a of the protruding portion 24 so that the protruding portion 23 and the protruding portion 24 can be arranged according to the positions of the failure notification switch 19 in the left-right direction. It is configured to be stretchable so that the interval can be adjusted. As an example, in the connecting portion 26, a portion arranged above the housing 14 expands and contracts in the direction indicated by the arrow Y in FIG.

For example, the protrusion 23 is configured to be vertically expandable and contractible when the erroneous operation prevention device 21 is attached so that the protrusion 23 can be arranged according to the position of the failure notification switch 19 in the vertical direction. Similarly, the protruding portion 24 is configured to be able to expand and contract up and down when the erroneous operation prevention device 21 is attached. The mounting state of the erroneous operation prevention device 21 is, for example, the state shown in FIGS. 6 to 8. That is, the mounting state is a state in which the fixing portion 22 is fixed to the housing 14 and a part of the connecting portion 26 faces the upper surface of the housing 14.

The erroneous operation prevention device 21 may be configured so that the protruding portion 23 and the protruding portion 24 can be arranged according to both the horizontal position and the vertical position of the failure notification switch 19.

One end of the erroneous operation prevention device 21, that is, the fixing portion 22, is fixed to the housing 14 by using bolts 16. The erroneous operation prevention device 21 may further include means for fixing the other end portion to the control panel 10. For example, the erroneous operation prevention device 21 further includes a suction portion that attracts the protrusion 24 to the front surface 15a of the cover 15. The suction unit is preferably, for example, a suction cup or a magnet so that the erroneous operation prevention device 21 can be attached to the existing control panel 10. The erroneous operation prevention device 21 may include a suction portion that attracts the connecting portion 26 to the upper surface of the housing 14 as a means for fixing the device.

FIG. 9 is a diagram showing another example of the erroneous operation prevention device 21 according to the first embodiment. FIG. 9 shows an example in which the erroneous operation prevention device 21 is integrally molded with resin or the like. The erroneous operation prevention device 21 shown in FIG. 9 is in a state before being attached to the control panel 10.

The erroneous operation prevention device 21 shown in FIG. 9 includes an opening forming member 27 that can be removed from the main body portion. FIG. 9 shows an example in which the erroneous operation prevention device 21 includes seven opening forming members 27. The maintenance staff removes the opening forming member 27 arranged in front of the failure notification switch 19 from the main body portion when or immediately after attaching the erroneous operation prevention device 21 to the control panel 10. By removing the opening forming member 27, an opening is formed in front of the failure notification switch 19 for maintenance personnel to visually recognize and operate the failure notification switch 19. In the example shown in FIG. 9, the fixing portion 22, the protruding portion 23, the protruding portion 24, the connecting portion 25, and the connecting portion 26 are formed by the main body portion and the opening forming member 27 that has not been removed. In the example shown in FIG. 9, the opening can be formed in accordance with the position of the failure notification switch 19 provided in the control panel 10. The erroneous operation prevention device 21 can be easily attached to the existing control panel 10.

Embodiment 2.
FIG. 10 is a diagram showing an example of the erroneous operation prevention device 21 according to the second embodiment. FIG. 11 is a plan view of the erroneous operation prevention device 21 shown in FIG. The erroneous operation prevention device 21 in the present embodiment includes, for example, a protruding portion 30, a protruding portion 31, and a connecting portion 32. FIG. 12 shows a state in which the erroneous operation prevention device 21 is attached to the control panel 10.

The protruding portion 30 has the functions of the fixing portion 22, the connecting portion 25, and the protruding portion 23 disclosed in the first embodiment. The protruding portion 30 is a portion fixed to the control panel 10. The protrusion 30 is fixed to the plug receiver 18.

As shown in FIG. 11, the protruding portion 30 has an insertion portion 30a. The insertion portion 30a has a shape that allows it to be inserted into the plug receiver 18. The protruding portion 30 is fixed to the plug receiver 18 by inserting the insertion portion 30a into the plug receiver 18. That is, the erroneous operation prevention device 21 shown in the present embodiment is fixed to the control panel 10 at a position closer to the failure notification switch 19 than the erroneous operation prevention device 21 disclosed in the first embodiment.

As shown in FIG. 10, the projecting portion 30 may be provided with an auxiliary plug receiver 30c on the front surface 30b. In the example shown in this embodiment, the protruding portion 30 is fixed to the plug receiver 18. For example, as shown in FIG. 12, two plug receivers 18 are used to fix the erroneous operation prevention device 21. In the example shown in FIG. 12, when the erroneous operation prevention device 21 is fixed to the control panel 10, the plug receiver 18 cannot be used. If the protrusion 30 is provided with the auxiliary plug receiver 30c, the plug that was planned to be inserted into the plug receiver 18 can be inserted into the auxiliary plug receiver 30c. The auxiliary plug receiver 30c is electrically connected to the insertion portion 30a. If the insertion portion 30a is inserted into the plug receiver 18, power can be supplied from the control panel 10 to the device into which the plug is inserted into the auxiliary plug receiver 30c.

10 and 11 show an example in which the auxiliary plug receiver 30c is provided on the front surface 30b of the protrusion 30. The auxiliary plug receiver 30c may be provided on the upper surface 30d of the protrusion 30.

The protrusions 30 and 31 are arranged on both sides of the failure notification switch 19 when the cover 15 is viewed from the front surface 15a side. For example, the protrusion 30 is arranged so as to be adjacent to the left side of the plug receiver 18 when the cover 15 is viewed from the front surface 15a side. The protrusion 30 is arranged so as to face the plug receiver 18. The projecting portion 30 is arranged so as to project forward from the front surface 15a of the cover 15. The protrusion height of the protrusion 30 from the front surface 15a is larger than the protrusion height of the failure notification switch 19 from the front surface 15a.

The protrusion 31 has the function of the protrusion 24 disclosed in the first embodiment. The protrusion 31 is arranged so as to be adjacent to the right side of the failure notification switch 19 when the cover 15 is viewed from the front surface 15a side. That is, the protruding portion 31 is arranged at a position farther from the plug receiver 18 than the failure notification switch 19. The protrusion 31 is arranged so as to face the front surface 15a of the cover 15. The projecting portion 31 is arranged so as to project forward from the front surface 15a of the cover 15. The protrusion height of the protrusion 31 from the front surface 15a is larger than the protrusion height of the failure notification switch 19 from the front surface 15a.

The side surface 30e of the protrusion 30 faces the protrusion 31 side. The side surface 31a of the protrusion 31 faces the protrusion 30 side. The side surface 30e and the side surface 31a face each other. The failure notification switch 19 is arranged between the side surface 30e and the side surface 31a when the cover 15 is viewed from the front surface 15a side.

The connecting portion 32 has the function of the connecting portion 26 disclosed in the first embodiment. The connecting portion 32 connects the protruding portion 30 and the protruding portion 31. The connecting portion 32 connects the protruding portion 30 and the protruding portion 31 so that the failure notification switch 19 can be visually recognized when the cover 15 is viewed from the front surface 15a side. The connecting portion 32 connects the protruding portion 30 and the protruding portion 31 so that the failure notification switch 19 can be operated from the front surface 15a side of the cover 15.

In the example shown in FIGS. 10 and 11, the connecting portion 32 connects the upper end portion of the protruding portion 30 and the upper end portion of the protruding portion 31. The connecting portion 32 connects the lower end portion of the protruding portion 30 and the lower end portion of the protruding portion 31. When the protrusion 30 is fixed to the plug receiver 18, as shown in FIG. 12, the tip portion of the failure notification switch 19 is formed into a hollow portion surrounded by the protrusion 30, the protrusion 31, and the connecting portion 32. Be placed.

Even in the example shown in the present embodiment, the same effect as that of the example disclosed in the first embodiment can be obtained. That is, if the erroneous operation prevention device 21 shown in the present embodiment is attached to the control panel 10, it is possible to prevent the failure notification switch 19 from being operated in an unintended place. Further, in the example shown in the present embodiment, a dedicated member is not required to fix the protruding portion 30 to the control panel 10. The erroneous operation prevention device 21 can be easily attached to the existing control panel 10.

One end of the erroneous operation prevention device 21, that is, the protruding portion 30, is fixed to the plug receiver 18. The plug receiver 18 is adjacent to the failure notification switch 19. Therefore, the width of the erroneous operation prevention device 21 shown in the present embodiment can be made smaller than that of the erroneous operation prevention device 21 disclosed in the first embodiment. In the example shown in this embodiment, it is not necessary to support the other end of the erroneous operation prevention device 21 by the control panel 10.

In addition, in order to firmly fix the erroneous operation prevention device 21 to the control panel 10, the erroneous operation prevention device 21 may further include means for fixing the other end portion to the control panel 10. For example, the erroneous operation prevention device 21 further includes a suction portion that attracts the protrusion 31 to the front surface 15a of the cover 15. The suction unit is preferably, for example, a suction cup or a magnet so that the erroneous operation prevention device 21 can be attached to the existing control panel 10.

The erroneous operation prevention device 21 may further include means for supporting the other end portion on the control panel 10. FIG. 13 is a diagram showing another example of the erroneous operation prevention device 21 according to the second embodiment. The erroneous operation prevention device 21 shown in FIG. 13 further includes a reinforcing portion 33 in addition to the protruding portion 30, the protruding portion 31, and the connecting portion 32. In the example shown in FIG. 13, the reinforcing portion 33 is a plate-shaped member. The reinforcing portion 33 is provided on the protruding portion 31 and the connecting portion 32. The reinforcing portion 33 extends from the connecting portion with the protruding portion 31 toward the control panel 10. The reinforcing portion 33 extends from the connecting portion with the connecting portion 32 toward the control panel 10. A part of the reinforcing portion 33 is arranged above the housing 14 of the control panel 10 and faces the upper surface 14a of the housing 14. For example, a part of the reinforcing portion 33 comes into contact with the upper surface 14a of the housing 14. The reinforcing portion 33 may be provided only on the protruding portion 31 or only on the connecting portion 32.

The erroneous operation prevention device 21 shown in FIG. 13 may further include a suction portion. The suction portion is provided on, for example, the reinforcing portion 33. The suction portion sucks the reinforcing portion 33 onto the upper surface 14a of the housing 14.

FIG. 14 is a diagram showing another example of the erroneous operation prevention device 21 according to the second embodiment. The erroneous operation prevention device 21 shown in FIG. 14 is different from the erroneous operation prevention device 21 shown in FIG. 10 in the shape of the connecting portion 32. The front surface of the connecting portion 32 is arranged flush with the front surface 30b of the projecting portion 30 and the front surface of the projecting portion 31. The connecting portion 32 shown in FIG. 14 connects the protruding portion 30 and the protruding portion 31 so that the failure notification switch 19 can be visually recognized when viewed from above. The connecting portion 32 connects the protruding portion 30 and the protruding portion 31 so that the failure notification switch 19 can be operated from above.

Even in the example shown in FIG. 14, the same effect as that of the example shown in FIGS. 10 and 11 can be obtained. That is, if the erroneous operation prevention device 21 shown in FIG. 14 is attached to the control panel 10, it is possible to prevent the failure notification switch 19 from being operated in an unintended place. Further, in the example shown in FIG. 14, a dedicated member is not required to fix the protruding portion 30 to the control panel 10. The erroneous operation prevention device 21 can be easily attached to the existing control panel 10.

As for the features not described in detail in the present embodiment, any of the features disclosed in the first embodiment may be adopted.

The erroneous operation prevention device 21 disclosed in the first and second embodiments can exert the same effect even when attached to the control panel of the moving walkway. In the present application, the escalator shall include a moving walkway.

1 truss, 2 machine room, 3 machine room, 4 manhole, 5 entrance / exit, 6 manhole, 7 entrance / exit, 8 motor, 9 reducer, 10 control panel, 11 step, 12 sprocket, 13 step chain, 14 housing, 14a top surface, 15 cover, 15a front surface, 16 bolts, 17 power switch, 18 plug receiver, 19 failure notification switch, 20 plug receiver, 21 erroneous operation prevention device, 22 fixing part, 22a through hole, 23 protrusion, 23a side surface, 24 Projection part, 24a side surface, 25 connection part, 26 connection part, 27 opening forming member, 30 protrusion part, 30a insertion part, 30b front surface, 30c auxiliary plug receiver, 30d top surface, 30e side surface, 31 protrusion part, 31a side surface, 32 Connecting part, 33 Reinforcing part

Claims (8)

With the housing
A cover that closes the front of the housing and
A switch that can be operated from the front side of the cover,
It is a malfunction prevention device that can be attached to the control panel of an escalator equipped with.
A fixing portion that is fastened to the housing together with the cover by bolts for fixing the cover to the housing.
A first protruding portion that is arranged closer to the bolt than the switch and projects forward from the front surface of the cover.
A first connecting portion that connects the fixed portion and the first protruding portion,
A second protruding portion that is arranged at a position farther from the bolt than the switch and protrudes forward from the front surface of the cover.
A second connecting portion that connects the first protruding portion and the second protruding portion and partially faces the upper surface of the housing.
An erroneous operation prevention device equipped with. The first side surface of the first protrusion and the second side surface of the second protrusion face each other.
When the cover is viewed from the front side, the switch is arranged between the first side surface and the second side surface.
The erroneous operation prevention device according to claim 1, wherein the second connecting portion can be expanded and contracted so that the distance between the first side surface and the second side surface can be adjusted. The first protruding portion can be expanded and contracted up and down in a mounted state in which the fixed portion is fixed to the housing and the part of the second connecting portion faces the upper surface of the housing.
The erroneous operation prevention device according to claim 2, wherein the second protruding portion can be expanded and contracted up and down in the attached state. The erroneous operation according to any one of claims 1 to 3, further comprising a suction portion for sucking the second connecting portion on the upper surface of the housing or sucking the second protruding portion on the front surface of the cover. Prevention device. With the housing
A cover that closes the front of the housing and
A switch that can be operated from the front side of the cover,
A plug holder that is adjacent to the switch and allows the plug to be inserted from the front side of the cover.
It is a malfunction prevention device that can be attached to the control panel of an escalator equipped with.
A first protruding portion having an insertion portion, which is fixed to the plug receiver by being inserted into the plug receiver and projects forward from the front surface of the cover.
A second projecting portion that is arranged at a position farther from the plug receiver than the switch and projects forward from the front surface of the cover.
A connecting portion that connects the first protruding portion and the second protruding portion so that the switch can be operated from above or from the front side of the cover.
An erroneous operation prevention device equipped with. A reinforcing portion provided on the second protruding portion or the connecting portion and partially facing the upper surface of the housing, and a reinforcing portion.
A suction portion that attracts the reinforcing portion to the upper surface of the housing, and a suction portion.
The erroneous operation prevention device according to claim 5, further comprising. The erroneous operation prevention device according to claim 5, further comprising a suction portion for sucking the second protrusion to the front surface of the cover. The first protrusion has an auxiliary plug receiver into which the plug can be inserted.
The erroneous operation prevention device according to any one of claims 5 to 7, wherein the auxiliary plug receiver is electrically connected to the insertion portion.

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