JP4387959B2 - Lift pole device - Google Patents

Description

  The present invention relates to an elevating (in / out) pole that can be used as a fence surrounding a site such as a parking lot or a vehicle traffic regulation means.

  The lifting pole device used as a fence for parking lots and the like has recently been used with an electric type that can be moved in and out with a single switch as disclosed in Patent Documents 1 and 2, which increases convenience. ing. Such an electric lift pole device is a mechanism that lifts and lowers the pole by converting the rotational motion of the motor into a linear motion with a screw shaft.

JP 2003-213636 A JP 2004-036383 A

  The above-mentioned prior art lifting pole device is used with a chain placed around the head when it is used as a fence surrounding the site. It is used as it is.

  However, if the chain is made of plastic, it is often damaged by the traffic of people and cars, which is not good. Further, even in the case of a metal chain, there is a concern that it will look bad because it is trampled by people and vehicles, and it will be rubbing and damaged by the body of the car during an appearance operation.

  In view of such problems, the present invention proposes an elevating pole device that can be used as a fence without using a chain.

  According to the present invention, in the lifting pole device that lifts and lowers the pole arranged in the storage case by converting the rotational motion of the motor into a linear motion by the screw shaft, the translucent hole is provided in the side surface portion of the pole, An optical sensor facing the light transmitting hole is installed inside the pole.

  The optical sensor includes a light emitting element and a light receiving element, and performs sensing operation by using one of the paired lifting pole devices as a light emitting element and the other as a light receiving element. Therefore, when a person or vehicle passes between the pair of lifting pole devices, the optical sensor reacts and an alarm can be generated with light or sound. That is, the optical sensor can be used as an invisible fence or the like instead of the chain.

  In such an elevating pole device, it is preferable that the two light transmitting holes are disposed apart from each other in the vertical direction and a light sensor is installed in each of them. According to this, it is possible to process so as not to generate an alarm unless both optical sensors separated from each other up and down appropriately react at the same time, so that an alarm is not generated unnecessarily in response to a small animal such as a cat. Can do.

  There is a corresponding device to install the optical sensor in a narrow pole. In other words, since the electric lift pole device accommodates the motor and the drive mechanism inside, it is necessary to devise their arrangement to secure a space for the optical sensor. Therefore, in the present invention, the motor for raising and lowering the pole is disposed below the bottom dead center of the pole in the storage case, and the screw shaft is extended upward from the motor by a length corresponding to at least the stroke of the pole, A screwing means that is screwed onto the screw shaft and moves up and down by rotation thereof is disposed at a lower end portion in the pole. With this structure, it is only necessary to dispose screwing means in the pole, so that a sufficient space for installing the light receiving sensor in the pole is secured.

The screw means is a pipe member suspended from the pole head, and a nut to be screwed to the screw shaft is fixed. The screw means covers the periphery of the screw shaft and is slidable with respect to the pipe member outer peripheral surface. provided motor case enclosing the motor in a liquid-tight manner is provided with the shaft case to be sealed liquid tight, an optical sensor, a configuration of placing the pole in the space surrounding the tubular member threaded section. That is, since rainwater can flow into the storage case, when the screw shaft and the motor are arranged in the lowermost layer, it is expected that the storage case will be affected by moisture accumulated at the bottom. Therefore, it is preferable to protect the drive unit from corrosion and the like by sealing the drive part entirely with a pipe member of the screwing means-shaft case-motor case.

  According to the present invention, in the electric lift pole device, the optical sensor is installed in the pole that moves up and down so that the passage between the poles can be sensed, and the optical sensor functions as an invisible chain. A fence can be constructed without having to hang a chain or the like. Therefore, if the raising / lowering pole apparatus of this invention is used, the fence etc. which can be controlled with one switch which was not conventionally can be comprised. In addition, building a system that sends a report to a security company in conjunction with an optical sensor will help strengthen security.

  1 and 2 show an embodiment of an elevating pole device according to the present invention. FIG. 1 is a cross-sectional view showing the internal structure, and FIG. 2 is an external view showing the pole extended.

  The lifting pole device of this example includes a cylindrical pole 2 that moves up and down in a cylindrical storage case 1, and the pole 2 is lifted and lowered by rotation of a screw shaft 3 by a motor disposed in the storage case 1. It has become.

  The storage case 1 is a metal cylinder buried in the ground, and a bearing flange 1a is fixed to the upper inner peripheral surface. Three strip-shaped bearings 1b are fixed to the inner peripheral surface of the bearing flange 1a at three equal intervals in the axial direction. Each of the bearings 1b is made of a fluororesin-coated and has good sliding property. In addition, two rows of resin (rubber) ring dust seals 1c are provided at the upper end portion of the bearing flange 1a to prevent intrusion of sand and dust and liquid-tightly sealed.

  The pole 2 moves up and down in the storage case 1 while being held by the three bearings 1b. The head is provided with a top cover 2a having a diameter larger than that of the trunk, and covers the upper end portion of the bearing flange 1a of the storage case 1 at the bottom dead center. Further, a top dead center stopper 2b is fixed to the lower end portion of the pole 2 so as to surround the outer peripheral surface. The top dead center stopper 2b abuts against the lower end surface of the bearing flange 1a to prevent the pole 2 from rising. When the torque is detected, the motor is stopped by the torque detection, and the ascending operation is stopped. Further, the top dead center stopper 2b is partially formed with a notch groove 2c. The guide rail 1d extending in the axial direction on the side wall of the storage case 1 is received in the notch groove 2c. 2 with respect to the storage case 1 is stopped.

  A motor for rotating the screw shaft 3 is sealed in a cubic motor case 4 together with a gear mechanism and liquid-tightly processed. The motor case 4 is bolted to the bottom of the storage case 1 by a drive unit base 5. . Therefore, even if rainwater accumulates at the bottom of the storage case 1, the drive system operates without any problem. Further, the periphery of the screw shaft 3 that is driven and rotated by the motor is covered with a tubular shaft case 6 that is erected and joined to the motor case 4. With these structures, the motor and the screw shaft 3 are liquid-tightly sealed.

  The screwing means 7 to be screwed onto the screw shaft 3 is fixed so that the nut 7b is not rotated at the tip of the pipe member 7a which is welded or bolted to the top cover 2a of the head of the pole 2 and suspended in the pole 2. Is formed. Thus, the nut 7b is disposed in a suspended state in the lower end portion of the pole 2, that is, in the vicinity of the lower end or in the vicinity of the lower end that has slightly entered. The length of the screw shaft 3 is at least as much as the lifting / lowering stroke of the pole 2 (allowance may be given), and when the screw shaft 3 rotates, the screwing means 7 screwed into the screw shaft 3 is screwed between the strokes. It moves up and down along the axis 3.

  The pipe member 7a fixing the nut 7b has a smaller diameter than the shaft case 6 and moves up and down in the shaft case 6. A space between the shaft case 6 and the pipe member 7a is slidably liquid-tightly sealed with a sealing material 6a such as a resin ring provided at the upper end of the shaft case 6. Thus, since the shaft case 6 is liquid-tightly sealed so as to be slidable with respect to the outer peripheral surface of the tube member 7 a, the drive system is liquid within the storage case 1 by the tube member 7 a -the shaft case 6 -the motor case 4. It is tightly enclosed.

  In the storage case 1, the motor (the motor case 4) can be installed at the bottom below the bottom dead center of the pole 2 by adopting the liquid-tight structure as described above. As a result, in the cylinder of the pole 2, only the screwing means 7 is suspended from the central shaft portion, and an empty space is secured around the tube member 7a. As an example, an infrared photosensor 10 is installed in this empty space.

  The optical sensor 10 is attached to an attachment member 11 that hangs down from the top cover 2a, and is set to a predetermined height. In the case of this example, two photosensors 10 are provided vertically separated from each other by a predetermined interval, and an alarm is generated when both photosensors 10 react at once. A translucent hole 12 is formed in a side surface portion of the pole 2 so as to correspond to the optical sensor 10, and a transparent glass 13 is fitted therein. The optical sensor 10 faces the light transmitting hole 12 and emits light through the light transmitting hole 12 or receives light through the light transmitting hole 12.

  Since the optical sensor 10 operates as a pair of a light emitting element and a light receiving element, if the illustrated optical sensor 10 is a light emitting element, the optical sensor of the lifting pole apparatus installed next to the optical sensor 10 is a light receiving element. Accordingly, the adjacent lifting pole devices are adjusted so that the positions of the light transmitting holes 12 are aligned with each other at the time of installation. Wiring for such an optical sensor 10 may be processed so that a water-resistant coated cord or the like is routed in the space around the pipe member 7a.

  As shown in FIG. 3, for example, when three elevating pole devices are installed to form a fence, the middle elevating pole device A has a pair of upper and lower so as to be paired with elevating pole devices B and C at both ends. Two sets of optical sensors 10 are provided at intervals of 180 °. A pair of upper and lower optical sensors 10 is provided on the lifting pole devices B and C at both ends. Thus, when the pole 2 is raised, a light chain invisible by the optical sensor 10 is stretched between B-A and A-C during that time.

  In addition, if two sets of light receiving sensors 10 in the middle lifting pole device A are provided at 90 ° intervals, that is, at right angles, a fence at the corner of the site that is bent by 90 ° can also be configured. Furthermore, if four sets of the light receiving sensors 10 are provided at intervals of 90 °, it is possible to extend a fence in all directions. That is, various fences can be created depending on the installation angle of the light receiving sensor 10.

  In the system of FIG. 3, a power line and a signal line are wired from the control panel D to each lifting pole device A, B, C, and can be controlled to be lifted and lowered simultaneously according to the operation of the control panel D. Further, a water distribution pipe is drawn out from the bottom of the storage case 1 buried in the ground, and is discharged to the ground via a drainage tank E. The drainage tank E is a mechanism for draining water by a pumping action by lowering the pole 2.

  In addition to this installation example, as an application example, the lifting pole device of the present invention can also be used as a sensor pole for monitoring the lifting action of other poles. That is, if the lifting pole devices B and C at both ends in FIG. 3 are used as a pair of light emitting / receiving, and the lifting pole device with the built-in photosensor 10 according to this embodiment is used, one or more lifting pole devices A between them are used. The up / down motion can be detected by the upper and lower optical sensors 10. There is a possibility that the lifting pole device A installed outdoors may stop during operation by being stepped on during the operation, and this state is extended to the lifting pole devices B and C at both ends in the extended state. It can be monitored by the optical sensor 10.

  In the above example, the top cover 2a has a large diameter, and the top cover 2a covers the ground with the pole 2 stored. However, the upper end surface is flush with the ground when the pole is stored. A so-called barrier-free configuration is also possible. This is shown in FIG.

  The pole 2 in the example of FIG. 4 can be lowered until the top cover 2a ′ provided on the head has the same diameter as the body and the upper end surface of the pole 2 and the upper end surface of the storage case 1 coincide. It is like that. The bearing flange 1a is also cut so that the portion protruding from the storage case 1 is not cut off. Therefore, when the pole 2 is buried in the storage case 1, there is no portion protruding above the ground.

Sectional drawing which showed the internal structure of the raising / lowering pole apparatus based on this invention. The external view shown in the state which extended the pole about the raising / lowering pole apparatus of FIG. Schematic which shows an example which comprised the fence using the three raising / lowering pole apparatuses of FIG. The external view which showed other embodiment of the raising / lowering pole apparatus based on this invention.

Explanation of symbols

1 Storage Case 2 Pole 3 Screw Shaft 4 Motor Case (Motor)
5 Drive part base 6 Shaft case 6a Sealing material 7 Screwing means 7a Tube member 7b Nut 10 Light sensor 11 Mounting member 12 Light transmitting hole 13 Glass

Claims (3)

In the lifting pole device that lifts and lowers the pole arranged in the storage case by converting the rotational movement of the motor into linear movement with the screw shaft,
The motor is disposed below the bottom dead center of the pole in the storage case, and the screw shaft is extended upward from the motor by a length corresponding to at least the stroke of the pole. A screwing means that is screwed up and down by rotation thereof is disposed at the lower end portion in the pole,
The screwing means includes a pipe member suspended from the pole head and a nut to be screwed with the screw shaft fixed thereto, and covers the periphery of the screw shaft and is slidable with respect to the outer peripheral surface of the pipe member. A shaft case that is liquid-tightly sealed and a motor case that liquid-tightly seals the motor is provided,
An elevating pole device characterized in that an optical sensor is disposed in a space in a pole around the tube member , a light transmitting hole is provided in a side surface portion of the pole, and the light sensor faces the light transmitting hole.   2. The lifting pole device according to claim 1, wherein two of the light transmitting holes are vertically spaced apart and the light sensor is installed in each of the light transmitting holes. A top dead center stopper is fixed to the outer peripheral surface of the lower end of the pole.
A notch groove is formed in a part of the top dead center stopper, and a guide rail extending in the axial direction on the side wall of the storage case is received in the notch groove.
The elevating pole device according to claim 1 or 2, characterized in that

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