JP2011246875A - Electrically-driven liftable pole device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrically-driven liftable pole device, in which a pole can be raised or lowered even when an electrically-driven motor cannot be operated.SOLUTION: A shaft 51 comprises a concavity which is formed to insert a tip of a tool, such as an electric drill, a hexagonal wrench, and so on, in an upper end thereof. The shaft 51 can be rotated by a tool whose tip is inserted in the concavity. When an electrically-driven motor 41 cannot be operated due to power failure or the like, a tool whose tip is inserted in the concavity of the upper end of the shaft 51 rotates the shaft 51. When the shaft 51 rotates, a gear 52 rotates together. Then when the gear 52 rotates, a gear 53, a gear 54, and a gear 55 rotate. A lower end of a long screw 33 is mounted on the gear 55, and the gear 55 holds the lower end of the long screw 33 to rotate it. When the gear 55 rotates, the long screw 33 rotates and a pole 10 is raised or lowered.

Description

  The present invention relates to an electric lift pole device that raises and lowers a pole by an electric motor.

A pole device is used in a parking lot or the like to prohibit entry and exit of a car or the like as necessary. In the pole device, a storage case storing the pole is embedded in the ground. When prohibiting the entry and exit of a car or the like, the pole device raises the pole and projects it from the ground.
As a drive source for raising or lowering the pole, many use an electric motor (hereinafter referred to as an electric lift pole device). In order to prevent the pole from descending even if the supply of electricity to the electric motor is stopped when the electric motor stops with the pole protruding from the ground, the electric lifting pole device There is something to prepare.

However, such an electric elevating pole device cannot be stored in the storage case by lowering the pole if a power failure occurs while the pole protrudes from the ground and the electromagnetic brake cannot be released.
Therefore, Patent Literature 1 discloses an electric lift pole device that includes a manual clutch for releasing the lock state of the electromagnetic brake. This electric lift pole device operates a manual clutch using a clutch key, and when the electromagnetic brake is unlocked, the pole is automatically lowered by its own weight.

JP 2005-320795 A

  However, the electric lift pole device disclosed in Patent Document 1 cannot raise the pole when the electric motor cannot be operated. For this reason, when a power failure or disconnection of the power cable occurs, it is impossible to prohibit the entry and exit of a car or the like using the electric lifting pole device.

  An object of the present invention is to provide an electric elevating pole device that can raise and lower a pole even when an electric motor cannot be operated.

In order to achieve the above object, the electric lifting pole device of the present invention is:
With Paul,
An elevating part for raising and lowering the pole;
An internal drive unit that drives the lifting unit by an electric motor and raises and lowers the pole to the lifting unit;
An external drive unit that drives the elevating unit by a force transmitted from the outside, and raises and lowers the pole to the elevating unit;
It is characterized by providing.

Preferably, the pole has a cylindrical shape having a cavity inside,
The internal driving unit is housed in a cavity inside the pole,
The external drive unit is disposed outside the pole.
It is characterized by that.

Preferably, the electric lift pole device of the present invention is
A basement having an opening for projecting the pole and an insertion port into which a tool for transmitting force is inserted in the lid, and housing the elevating part, the internal driving part, and the external driving part inside With a box,
The pole has an opening at the bottom,
The elevating part is
A pillar that is fixed in the underground box and extends from the opening of the pole to an internal cavity,
A cylindrical long screw engraved on the outer peripheral surface, the upper end of which is rotatably held on the upper end of the column, and rotated by the internal drive unit and the external drive unit,
A groove corresponding to the spiral groove of the long screw is engraved on the inner peripheral surface, and has a hole into which the long screw is fitted. The long screw is raised or lowered when rotated, and the side surface is the inner surface of the pole. And a plate portion that raises or lowers the pole in accordance with ascent or descent;
With
The internal drive unit is
A first transmission unit configured to transmit the rotation of the electric motor to an upper end portion of the long screw to rotate the long screw;
The electric motor is held at the upper end of the column;
The external drive unit is
It is arranged along the outer surface of the pole, extends from the vicinity of the lid portion of the underground box to the vicinity of the bottom portion, and transmits the force transmitted from the outside by a tool inserted from the insertion port of the lid portion of the underground box. A shaft that receives and rotates,
A second transmission unit that is disposed at the bottom of the underground box, rotatably holds the lower end of the long screw, and transmits the rotation of the shaft to the lower end of the long screw to rotate the long screw. When,
Comprising
It is characterized by that.

Preferably, the electric lift pole device of the present invention is
One end is fixed to the main surface of the plate part included in the elevating part that faces the bottom part of the underground box, and a spring that contracts with the other end coming into contact with the bottom part when the pole descends to the lowest position. It is characterized by providing.

  According to the present invention, in the electric lift pole device, the pole can be raised and lowered even when the electric motor cannot be operated.

It is a perspective view which shows an example of the external appearance of the electric raising / lowering pole apparatus which concerns on embodiment of this invention. It is a perspective view which shows an example of a structure of the electric raising / lowering pole apparatus which concerns on embodiment of this invention. It is a perspective view which shows an example of the shape of a support | pillar. It is sectional drawing which shows an example of a structure of a long screw nut. It is a figure which shows the state which two springs are contact | abutting to the bottom part of the underground box. It is a figure which shows the recessed part of the upper end part of an axis | shaft.

  Hereinafter, an electric lift pole device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an example of a state in which a pole 10 protrudes from a basement box (storage case) 20 in the electric lift pole device 1 according to the embodiment of the present invention.
The electric elevating pole device 1 is used with the underground box 20 buried in the ground so that the lid portion 21 of the underground box 20 has substantially the same height as the ground. When the electric elevating pole device 1 allows a vehicle or the like to enter and exit, the electric lift type pole device 1 lowers the pole 10 and stores the pole 10 in the underground box 20. At this time, the surface 11 of the head of the pole 10 is located at substantially the same height as the lid portion 21 of the underground box 20, that is, substantially the same height as the ground. On the other hand, the electric elevating pole device 1 causes the pole 10 to protrude from the opening 22 of the lid portion 21 to the ground as shown in FIG.
As will be described later, the insertion port 23 of the lid portion 21 is a hole for inserting a tool such as an electric drill or a hexagon wrench to raise or lower the pole 10 manually.

FIG. 2 shows an example of the configuration of the electric elevating pole device 1 according to the embodiment of the present invention. In FIG. 2, the side surface of the underground box 20 is omitted, and only the lid 21 and the bottom 24 are shown. Moreover, the side part of the pole 10 is drawn transparently.
1 and 2 are denoted by the same reference numerals.

The electric elevating pole device 1 includes a pole 10, a basement box 20, an elevating part, an internal driving part, and an external driving part.
Here, the elevating part includes a column 31, a support plate 32, a long screw 33, a long screw nut 34, a base plate 35, a bolt 36, a bolt 37, a spring 38, and a spring 39.
The internal drive unit includes an electric motor 41, a motor gear 42, and a long screw gear 43.
The external drive unit includes a shaft 51, a gear 52, a gear 53, a gear 54, and a gear 55.

The elevating part, the internal drive part, and the external drive part are housed (arranged) inside the underground box 20.
As shown in FIG. 2, the pole 10 is a cylinder having a cavity inside and an opening 12 at the bottom. The head of the pole 10 is covered with a surface 11 and closed. The elevating part and the internal driving part are housed (arranged) in a cavity inside the pole 10. On the other hand, the external drive unit is disposed outside the pole 10.

The internal drive unit drives the lifting unit by the electric motor 41. Here, although the electric elevating pole device 1 according to the present embodiment does not include an electromagnetic brake, as will be described later, since a trapezoidal screw is used as the long screw 33 of the elevating unit, the electric motor is in a state where the pole 10 is raised. Even when the supply of electricity to 41 is stopped, the pole 10 does not descend.
The external drive unit drives the lifting unit with a force transmitted from the outside using a tool such as an electric drill or a hexagon wrench inserted from the insertion port 23 of the lid unit 21.
The elevating unit is driven by the internal driving unit and the external driving unit to raise and lower the pole 10.

Hereinafter, the configuration and operation of each unit will be described in detail. First, the elevating part will be described.
The column 31 is attached so that its lower end is fixed to the bottom 24 of the underground box, and extends from the opening 12 of the pole 10 to the internal cavity. As shown in FIG. 3, the column 31 has an L-shaped cross section, for example. A support plate 32 is fixedly attached to the upper end of the column 31.

The long screw 33 is a cylinder in which a spiral groove (a thread groove of a male screw) is engraved on the outer peripheral surface. The long screw 33 raises the pole 10 to a height high enough to prohibit entry / exit of a car or the like, and the pole 11 until the surface 11 of the head of the pole 10 is almost the same height as the lid portion 21 of the underground box 20. It has a length necessary for lowering 10.
The upper end of the long screw 33 protrudes through a hole provided in the support plate 32. The long screw 33 is rotatably held by the support plate 32. A long screw gear 43 included in the external drive unit is attached to the upper end of the long screw 33. On the other hand, a gear 55 included in the external drive unit is attached to the lower end of the long screw 33. When the long screw gear 43 rotates, the long screw 33 also rotates together. Similarly, when the gear 55 rotates, the long screw 33 also rotates together.

As shown in the cross-sectional view of FIG. 4, the long screw nut 34 has a hole in which a groove corresponding to a spiral groove of the long screw 33 (a thread groove of a female screw) is formed on the inner peripheral surface. A long screw 33 is fitted into the hole. The long screw nut 34 is raised or lowered when the long screw 33 rotates.
The base plate 35 has a hole through which the long screw 33 passes. The base plate 35 is attached in a form in which a long screw nut 34 is fixed to one main surface facing upward, and rises or descends together with the long screw nut 34. The side surface of the base plate 35 is fixed to the inner peripheral surface of the pole 10 with bolts 36 and bolts 37. For this reason, when the base plate 35 is raised or lowered, the pole 10 is also raised or lowered simultaneously.

  Here, in this embodiment, a trapezoidal screw is used as the long screw 33. A groove corresponding to a trapezoidal screw (a thread groove of a female thread) is engraved in the hole of the long screw nut 34. For this reason, although the electric elevating pole device 1 according to the present embodiment does not include an electromagnetic brake, the pole 10 does not descend even if the supply of electricity to the electric motor 41 is stopped while the pole 10 is raised.

  As shown in FIG. 5, a spring 38 and a spring 39 are attached to the other main surface facing the lower side of the base plate 35 (the main surface facing the bottom 24 of the underground box 20). The spring 38 and the spring 39 are used when the head 11 of the pole 10 is lowered until the surface 11 of the head 10 is substantially level with the lid 21 of the underground box 20, that is, when the pole 10 is lowered to the lowest position. One end thereof contacts the bottom portion 24 of the 20 and contracts.

  When the spring 38 and the spring 39 contract, a force that pushes the base plate 35 upward is generated. This force is a force that pushes up the pole 10. Therefore, when the pole 10 is lifted, a force that pushes up the pole 10 by the spring 38 and the spring 39 is applied at the start of the lift. When starting to raise the pole 10, a larger force is required than when the pole 10 is rising. However, since the spring 38 and the spring 39 share a part of the force, the force required for the electric motor 41 and the like is reduced.

  Further, as described above, when the surface 11 of the head of the pole 10 is located at substantially the same height as the lid portion 21 of the underground box 20, that is, substantially the same height as the ground, the spring 38 and the spring 39 are provided. Is in contact with the bottom 24 of the underground box 20. For this reason, for example, when a car tire is placed on the head of the pole 10, the spring 38 and the spring 39 act as a cushion, and the impact on the pole 10 is reduced.

Next, the internal drive unit will be described.
As described above, the internal drive unit includes the electric motor 41, the motor gear 42, and the long screw gear 43. The long screw gear 43 is attached to the upper end of the long screw 33.
The electric motor 41 is fixed so as to be suspended under the support plate 32, and is held at the upper end of the column 31. The motor gear 42 protrudes through a hole in the support plate 32. The electric motor 41 is supplied with power from a power source (not shown) and rotates.
When the electric motor 41 rotates, the motor gear 42 rotates. When the motor gear 42 rotates, the long screw gear 43 rotates and the long screw 33 rotates. Therefore, the motor gear 42 and the long screw gear 43 constitute a first transmission unit that transmits the rotation of the electric motor 41 to the upper end portion of the long screw 33 and rotates the long screw 33.

Next, the external drive unit will be described.
As described above, the external drive unit includes the shaft 51, the gear 52, the gear 53, the gear 54, and the gear 55.
The shaft 51 is disposed along the outer surface of the pole 10 and extends from the vicinity of the lid portion 21 of the underground box 20 to the vicinity of the bottom portion 24. As shown in FIG. 6, the shaft 51 includes a concave portion 56 having a shape into which a tip portion of a tool such as an electric drill or a hexagon wrench can be inserted at the upper end portion. The shaft 51 can be rotated by a tool whose tip is inserted into the recess 56.

  The gear 52, the gear 53, the gear 54, and the gear 55 are attached to the bottom 24 of the underground box 20 so as to be rotatable. The gear 52 is attached to the lower end of the shaft 51, and rotates together with the rotation of the shaft 51. When the gear 52 rotates, the gear 53, the gear 54, and the gear 55 rotate. The lower end of the long screw 33 is attached to the gear 55, and the gear 55 holds the lower end of the long screw 33 so that it can rotate. When the gear 55 rotates, the long screw 33 rotates. Therefore, the gear 52, the gear 53, the gear 54, and the gear 55 constitute a second transmission unit that transmits the rotation of the shaft 51 to the lower end portion of the long screw 33 and rotates the long screw 33.

In the above-described embodiment, the pole 10 is a cylinder. However, the pole 10 is not limited to a cylinder, and may have a different shape such as a rectangular tube having a hexagonal cross section.
In the above embodiment, the support column 31 has an L-shaped cross-sectional shape, but may have a different cross-sectional shape such as a U-shape. Further, a plurality of columns having different shapes such as a cylinder may exist.

Further, in the above embodiment, the long screw nut 34 is attached to one main surface facing upward of the base plate 35, and the spring 38 and the spring 39 are the other main surface (downward of the basement box 20) facing downward of the base plate 35. The long screw nut 34 is attached to the other main surface facing the lower side of the base plate 35, that is, the main surface to which the spring 38 and the spring 39 are attached. It may be.
In addition, a structure corresponding to the spiral groove of the long screw 33 (a thread groove of a female screw) may be formed on the inner peripheral surface of the hole of the base plate 35 through which the long screw 33 passes without having the long screw nut 34. Good.

In the above embodiment, a trapezoidal screw is used as the long screw 33 and the long screw nut 34 has a hole in which a groove corresponding to the trapezoidal screw (screw groove of a female screw) is engraved. Another screw such as a triangular screw or the like may be used, and the long screw nut 34 may have a hole in which a groove corresponding to the screw (screw groove of a female screw) is engraved.
However, for example, when a ball screw is used as the long screw 33, the pole 10 may be lowered when the supply of electricity to the electric motor 41 is stopped while the pole 10 is raised. When such a screw is used as the long screw 33, an electromagnetic brake is added, or an electric motor with an electromagnetic brake is used as the electric motor 41, and the electromagnetic brake is activated when the supply of electricity to the electric motor 41 is stopped. In addition to the configuration, means for releasing the lock state of the electromagnetic brake is added, and the pole 10 is attached to the pole 10 using a tool such as an electric drill or a hexagon wrench inserted from the insertion port 23 of the lid 21 by the external drive unit. When raising and lowering, it is desirable that the electromagnetic brake is unlocked.

Moreover, although the axis | shaft 51 shown in FIG. 2 is a cylinder, the axis | shaft 51 may have different shapes, such as a prism which has cross sections, such as a hexagon.
Further, the shape of the concave portion 56 at the upper end portion of the shaft 51 is set to a specific shape such as a star shape, and the shaft 51 can be turned only when a tool whose tip portion matches the specific shape is used. Also good. By doing in this way, the tool provided with the shape of the front-end | tip part which corresponds to a specific shape can be given a role as a key, and security can be improved.

In the above embodiment, the second transmission unit is configured by the gear 52, the gear 53, the gear 54, and the gear 55. However, the number of gears is not limited to four, and may be configured by an arbitrary number of gears. Good. Further, an endless belt may be used instead of the gear as the power transmission means of the second transmission unit.
Although the first transmission unit is configured by the motor gear 42 and the long screw gear 43, it may be configured by using an endless belt instead of the gear.

  As described above, according to the present invention, in the electric lift pole device, the pole 10 can be raised and lowered even when the electric motor 41 cannot be operated.

  Further, the pole 10 has a structure with a cup lying down. When the internal drive unit including the electric motor 41 is stored inside the pole 10 as in the embodiment described above, water cannot enter the inside of the pole 10 by the air inside the pole 10. For this reason, even if rainwater or the like enters the inside of the underground box 20, the electric motor 41 can be prevented from being immersed in water.

  Further, when the internal drive unit is housed in the pole 10, the internal drive unit can be attached to the upper end of the long screw 33. For this reason, even if the gear 52, the gear 53, the gear 54, and the gear 55 constituting the second transmission portion of the external drive unit are arranged on the bottom 24 of the underground box 20, the width of the bottom 24 does not increase. Therefore, the underground box 20 can be made smaller than the structure in which the first transmission part of the internal drive part is arranged on the bottom part 24.

  An internal drive unit including the electric motor 41 can also be disposed outside the pole 10. In this structure, since the 1st transmission part for transmitting rotation of the electric motor 41 to the long screw 33 and rotating the long screw 33 must be arrange | positioned in the lower part of the underground box 20, the underground box 20 is a little. growing. Moreover, the effect that the electric motor 41 mentioned above can be prevented from being immersed in water is lose | eliminated. However, this configuration also has the effect that the pole 10 can be raised and lowered even when the electric motor 41 cannot be operated.

In addition, since the spring 38 and the spring 39 share a part of the force for raising the pole 10 when starting to raise the pole 10, the electric motor 41 having a small driving force can be used.
Further, when the pole 10 is lowered and the surface 11 of the head of the pole 10 is substantially at the same height as the ground, for example, when a car tire is placed on the head of the pole 10, the spring 38 and the spring 39 are Acting as a cushion, the impact on the pole 10 is mitigated.

  Although the embodiments of the present invention have been described above, various modifications and combinations necessary for design reasons and other factors are described in the inventions described in the claims and the specific embodiments described in the embodiments of the invention. It is included in the scope of the invention corresponding to the example.

  DESCRIPTION OF SYMBOLS 1 ... Electric lift pole apparatus, 10 ... Pole, 11 ... Surface of head of pole, 12 ... Opening of lower end of pole, 20 ... Basement box, 21 ... Cover of basement box, 22 ... Cover of basement box Opening 23, insertion opening of the lid of the underground box, 24 ... bottom of the underground box, 31 ... column, 32 ... support plate, 33 ... long screw, 34 ... long screw nut, 35 ... base plate, 36, 37 ... bolt, 38 , 39 ... Spring, 41 ... Electric motor, 42 ... Motor gear, 43 ... Long screw gear, 51 ... Shaft, 52, 53, 54, 55 ... Gear, 56 ... Recess in the upper end of the shaft

Claims (4)

With Paul,
An elevating part for raising and lowering the pole;
An internal drive unit that drives the lifting unit by an electric motor and raises and lowers the pole to the lifting unit;
An external drive unit that drives the elevating unit by a force transmitted from the outside, and raises and lowers the pole to the elevating unit;
An electric lift pole device characterized by comprising: The pole is cylindrical with a cavity inside,
The internal driving unit is housed in a cavity inside the pole,
The external drive unit is disposed outside the pole.
The electric elevating pole device according to claim 1. A basement having an opening for projecting the pole and an insertion port into which a tool for transmitting force is inserted in the lid, and housing the elevating part, the internal driving part, and the external driving part inside With a box,
The pole has an opening at the bottom,
The elevating part is
A pillar that is fixed in the underground box and extends from the opening of the pole to an internal cavity,
A cylindrical long screw engraved on the outer peripheral surface, the upper end of which is rotatably held on the upper end of the column, and rotated by the internal drive unit and the external drive unit,
A groove corresponding to the spiral groove of the long screw is engraved on the inner peripheral surface, and has a hole into which the long screw is fitted. The long screw is raised or lowered when rotated, and the side surface is the inner surface of the pole. And a plate portion that raises or lowers the pole in accordance with ascent or descent;
With
The internal drive unit is
A first transmission unit configured to transmit the rotation of the electric motor to an upper end portion of the long screw to rotate the long screw;
The electric motor is held at the upper end of the column;
The external drive unit is
It is arranged along the outer surface of the pole, extends from the vicinity of the lid portion of the underground box to the vicinity of the bottom portion, and transmits the force transmitted from the outside by a tool inserted from the insertion port of the lid portion of the underground box. A shaft that receives and rotates,
A second transmission unit that is disposed at the bottom of the underground box, rotatably holds the lower end of the long screw, and transmits the rotation of the shaft to the lower end of the long screw to rotate the long screw. When,
Comprising
The electric elevating pole device according to claim 2.   One end is fixed to the main surface of the plate part included in the elevating part that faces the bottom part of the underground box, and a spring that contracts with the other end coming into contact with the bottom part when the pole descends to the lowest position. The electric lift pole device according to claim 3, further comprising:

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