JPH09203018A - Electric fence post - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a durable fence post capable of preventing an operation default caused by the incursion of rain water into the fence post. SOLUTION: A buried cylinder 5, a post body 1 fitted to the buried cylinder 5 in a liftable manner and a post body lift mechanism are buried in the ground, and a motor driving the post body lift mechanism and a lift stroke controlling device for controlling a lift stroke of the post body 1 by detecting speed of the motor are provided on the ground. It is desirable that speed of the motor is transferred to the post body lift mechanism for lifting the post body 1 with a flexible shaft 4. The lift stroke controlling device is equipped with a screw shaft turned by rotation of the motor, a mover for moving to the front end side or basic end side of the screw shaft in accordance with the turning of the screw shaft and a limit switch coming into contact with the mover and stopping the motor when it reaches upward limit and downward limit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric fence post that is installed in an entrance / exit path of a vehicle and has a pillar that is moved in and out by a motor.

[0002]

2. Description of the Related Art Japanese Utility Model Publication No. 62-4566 discloses an electric fence post that is installed on the entrance and exit paths of a vehicle and has a pillar that is moved in and out by a motor.

In this conventional electric fence post, as shown in FIG. 5, a motor 23 is attached to the lower portion of a machine frame 22 having a lid 21 provided at the upper end to freely retract a post 20, and a drive sprocket for the motor 23. A driven sprocket 25 corresponding to 24 is provided on the upper part of the machine frame 22, and a chain 27 connected to a joint 26 near the lower end of the column 20 is hung on both sprockets 24, 25.
Insert the machine frame 22 into the buried cylinder 28 buried in the ground, and
The upper end surface of the above was closed by the lid 21, the power source for the motor 23 was pulled out from the embedded cylinder 28, and the switch box 29 was provided at an appropriate position. In addition, the pillar 20
The limit switches 30 and 31 for stopping the motor 23 at the ascent and descent limits of were installed.

[0004]

As described above, in the conventional electric fence post, since the electric parts such as the motor 23 and the limit switches 30 and 31 are embedded and installed in the ground, the intrusion of rainwater. As a result, there is a problem in that electric leakage is likely to occur and contact failure is likely to occur, often resulting in malfunction.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a durable electric fence column which does not malfunction due to intrusion of rainwater.

[0006]

According to the present invention,
The embedded cylinder 5 and the pillar 1 that is vertically inserted into the embedded cylinder 5
And a pillar elevating mechanism for elevating and lowering the pillar 1 is provided in the ground,
A motor 11 for driving the pillar lifting mechanism and the motor
An electric fence column is characterized in that an elevation stroke control means 16 for controlling the elevation stroke of the column 1 by detecting the number of rotations of 11 is provided on the ground.

According to a second aspect of the invention, in addition to the structure of the first aspect, the rotation of the motor 11 is controlled by the flexible shaft 4.
The column body 1 is transmitted to the column body elevating mechanism that moves up and down.

According to a third aspect of the present invention, in addition to the structure of the first aspect, the lifting stroke control means 16 includes the motor.
The screw shaft 16a which is rotated by the rotation of 11, the mover 16b which is moved to the front end side or the base end side of the screw shaft 16a according to the rotation of the screw shaft 16a, and the ascent and descent limits of the column 1 are reached. Mover 16b
Limit switch 16 that comes into contact with the motor to stop the motor 11
c and 16d are provided.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory view showing a construction state of the electric fence post of the present invention. In FIG. 1, 1 is a column,
It is possible to move up and down by the pillar lifting mechanism.

Reference numeral 2 is a radio antenna, which is connected to a control panel 3 installed at an appropriate place on the ground. Further, the control panel 3 is put in a box so that it will not be rained.

The column 1 can be moved up and down by operating a remote controller (not shown) while the vehicle is still in the vehicle.

Further, as shown in FIG. 2, the control panel 3 and the pillar raising / lowering mechanism of the pillar 1 are connected by a flexible shaft 4.

More specifically, as shown in FIG. 3, the pillar 1 is fitted in an embedded cylinder 5 buried in the ground, and can be raised and lowered by a pillar elevating mechanism.

The column raising / lowering mechanism comprises a belt 6 and a belt winding device 7, one end of which is fixed to the embedded cylinder 5.
The other end is fixed to the winding device 7. Belt winding device 7
Is composed of a reduction gear 7a and a drum 7b. The rotation of the motor transmitted by the flexible shaft 4 is reduced by the reduction gear.
The belt 6 is wound around the drum 7b by decelerating at 7a. The pillar 1 is placed on the belt 6 via the pulley 8 attached to the lower end. When the belt 6 is wound around the drum 7b, the pillar 1 moves up and when the belt 6 is taken out from the drum 7b. The pillar 1 is adapted to descend.

FIG. 4 is an explanatory view showing the structure of the control panel 3 installed on the ground. Reference numeral 9 is a receiver for receiving a signal emitted from the remote controller, and 10 is a motor controller for controlling the motor 11.

Reference numeral 12 is a relay for moving the motor 11 in response to a signal from the motor controller 10 and is provided in the same number as the column 1. Also, although only one motor 11 is shown, there are the same number of motors 11 corresponding to the relays 12.

Numeral 13 is a timer relay, which is used when the pillar 1 does not rise completely within a normal rising time.
Is for lowering.

Reference numeral 14 is a speed controller for controlling the rotation speed of the motor 11. The motor 11 uses an induction motor that can rotate in the opposite direction in this embodiment.

Numeral 15 is a clutch for protecting the motor 11 by idling it when the pillar 1 elevating mechanism or the flexible shaft 4 is abnormally loaded when the pillar 1 is raised or lowered. is there.

Reference numeral 16 is an elevating stroke control means for controlling the elevating stroke of the column 1. The screw shaft 16a is connected to the rotary shaft of the motor 11 via a gear 17, and the screw shaft 16a is rotated in accordance with the rotation of the screw shaft 16a. A mover 16b that moves to the tip side or the base end side of the shaft 16a, and a mover 16b when the pillar 1 reaches the upper limit and the lower limit.
Limit switches 16c and 16d are provided which come into contact with and generate a stop signal for the motor 11. In this embodiment, the rotation speed of the motor 11 is indirectly detected via the gear 17, but if a stepping motor is used, the input pulse sent to the motor 11 The number of revolutions may be directly detected by counting.

The flexible shaft 4 is fixed to the tip end side of the screw shaft 16a so that the screw shaft 16a and the flexible shaft 4 can rotate in the same direction and at the same rotational speed.

Reference numeral 18 is a breaker for turning on / off the main power supply 19. The above is the configuration of the electric fence post of the present invention, which operates as follows.

When a signal is issued from the remote controller, the signal is received by the receiver 9, and the motor controller 10 actuates the relay 12 to rotate the motor 11 in the forward direction.

Then, the screw shaft 16a and the flexible shaft 4 rotate in the positive direction.

When the flexible shaft 4 rotates, the column body lifting mechanism provided in the ground raises the column body 1.

As the column body 1 rises, the moving element 16b screwed onto the screw shaft 16a moves to the screw shaft 16a.
To the base end side (left side in the drawing) of. Then, when the upper limit of the pillar 1 is reached, the mover 16b moves to the limit switch 16c.
At this time, the rising of the column 1 is stopped by the signal from the limit switch 16c.

When a signal is again issued from the remote controller, the motor 11 turns the motor 11 in the opposite direction this time. Then, when the flexible shaft 4 rotates in the opposite direction, the pillar elevating mechanism in the ground lowers the pillar 1.

As the pillar 1 descends, the moving element 16b screwed onto the screw shaft 16a is moved to the screw shaft 16a.
To the tip side (right side in the figure) of. When the lower limit of the pillar 1 is reached, the mover 16b moves to the limit switch 16d.
Then, the lowering of the column 1 is stopped by the signal from the limit switch 16d.

[0030]

The electric fence post of the present invention is configured as described above, and includes the motor 11 and the limit switches 16c and 16d.
Since all the parts that use electricity such as the above are installed on the ground, there was no leakage of electricity due to intrusion of rainwater or contact failure, and it was durable.

According to the invention described in claim 2, in addition to the structure described in claim 1, if the rotation of the motor 11 is transmitted to the column body elevating mechanism for elevating the column body 1 by the flexible shaft 4, it is simple. The rotation of the motor 11 can be transmitted just by performing the construction.

According to the invention of claim 3, in addition to the structure of claim 1, the lifting stroke control means 16 is rotated by the rotation of the motor 11, and the screw shaft 16a is rotated.
And a mover 16b that moves to the front end side or the base end side of the screw shaft 16a according to the rotation of the screw shaft 16a.
If the limit switches 16c and 16d that come into contact with the mover 16b and generate a stop signal of the motor 11 when the rising and falling limits of the pillar 1 are reached are provided, the structure becomes simple and the cost is low. It is an excellent product with few failures.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a construction state of an electric fence post of the present invention.

FIG. 2 is a front view of the electric fence post of the present invention.

FIG. 3 is a vertical cross-sectional view of the underground portion of the electric fence post of the present invention.

FIG. 4 is an explanatory view showing a structure of an underground portion of the electric fence post of the present invention.

FIG. 5 is a vertical cross-sectional view showing a conventional electric fence post.

[Explanation of symbols]

 1 Pillar 4 Flexible shaft 5 Embedded cylinder 11 Motor 16 Elevating stroke control means 16a Screw shaft 16b Mover 16c, 16d Mitt switch

Claims (3)

[Claims] 1. A buried cylinder (5), a pillar body (1) which is vertically inserted into the buried cylinder (5), and a pillar body lifting mechanism for lifting and lowering the pillar body (1). A motor (11) for driving the column body lifting mechanism and a lifting stroke control means (16) for controlling the lifting stroke of the column body (1) by detecting the number of rotations of the motor (11) are provided on the ground. An electric fence post that is characterized. 2. The electric fence pole according to claim 1, wherein the rotation of the motor (11) is transmitted to a pillar raising / lowering mechanism for raising and lowering the pillar (1) by a flexible shaft (4). 3. A lifting shaft control means (16) is a screw shaft (16a) which is rotated by the rotation of the motor (11), and a tip of the screw shaft (16a) according to the rotation of the screw shaft (16a). Side (16b) that moves to the side or the base end side, and a limit switch that stops the motor (11) by contacting the mover (16b) when the rising and falling limits of the column (1) are reached ( 16c, 16d)
The electric fence post according to claim 1, wherein the electric fence post is provided.