JPH0453440Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an automatic opening/closing device for a gate that opens and closes in a double or single opening type using power.

(Prior technology) Conventionally, most gates that open and close electrically are of the sliding type, and the only gates that open and close with hinges such as double or single-sided doors open and close using a single ground roller. Ta. However, with a single ground roller, if there is a depression in the ground, the roller will idle and the gate will not move, and if there is an obstacle, even if it is small, there will be an obstacle between the ground and the roller. There was a problem with it getting stuck and not moving.

(Problems to be Solved by the Invention) The present invention provides an automatic opening/closing device that does not have the above-mentioned drawbacks, and includes two grounding rollers in the front and rear directions with respect to the moving direction of the gate.
This device is characterized in that the plate supporting the ground roller can be tilted at a fixed angle in the direction of movement.

(Means for solving the problem) The present invention attaches a support plate perpendicularly to the inner surface of the tip of a gate that opens and closes in a double-folding style or a single-sided style.
On this support plate, the upper center of a tilting plate having an inverted V-shaped inclined surface at the upper part is rotatably supported by a pin, and ground rollers that can be driven reversibly are provided on the left and right sides of the lower end of the plate. By running a stepped belt and driving this ground roller, it is possible to prevent the roller from idling even if there is a depression, and even if there is an obstacle, the ground roller can easily overcome it via the stepped belt. That is.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

1 in the figure shows a bolt 3 attached to the inner surface near the tip of the gate 2.
A support plate is attached vertically to the lower half of the support plate, and the upper center of a tilting plate 6 having inverted V-shaped inclined surfaces 4 and 5 on the upper part is pivotally supported by a pin 7. A tilting plate is rotatably supported in parallel with the support plate 1. Reference numerals 8 and 9 indicate ground rolls provided on the left and right sides of the lower end of the tilting plate (front and back with respect to the moving direction of the gate), and a stepped belt 11 is provided between the ground rolls 10 and the drive roll 10 provided above the middle of the ground rolls. The drive roll is driven by a deceleration motor 12 provided on the back side of the drive roll, and rotates the lower ground roller via a stepped belt 11.

As a matter of course, the stepped belt 11 and each roll have a tooth profile formed on the surface of the roll so that they mesh with each other, and the stepped portion 14 on the inner surface of the stepped belt meshes with this tooth profile to prevent slippage during rotation. At the same time, the stepped portion 15 on the outer surface of the stepped belt
The stepped belt protrudes from the outer periphery of the grounding roll, and this stepped belt itself contacts the ground 16 to open and close the gate by the frictional force with the ground.

Note that the grounding rolls 8 and 9 are not necessarily driven by the driving roll 10, and the driving roll 10 may be omitted and one of the grounding rolls may be driven by a deceleration motor.
Further, the axis of the drive roll 10 and the axis of the support pin 7 on the upper part of the tilting plate 6 may be the same.

Reference numeral 17 denotes a stopper provided on the upper part of the tilting plate 6, the lower surface of which is in contact with the central top of the tilting plate 6, so that a certain angular space 18 is formed between both the inclined surfaces 4 and 5. It's getting old.
In forming this angular space, the upper part of the tilting plate 6 may be formed into an inverted V shape as shown in the figure.
Conversely, the lower surface of the stopper 17 may be formed in a V-shape, and the upper surface of the tilting plate below it may be formed horizontally. The role of the angular space 18 formed between the lower surface of the stopper 17 and the upper end of the tilting plate 6 is to prevent the tilting plate 6 from tilting more than necessary when the grounding roll 9 runs onto an obstacle 19. This is to prevent it from swinging. However, when there are few obstacles,
This stopper 17 is not necessarily required. Reference numeral 20 denotes a belt protection plate provided at the lower end of the tilting plate, which extends between both grounding rolls so as to be located slightly above the stepped belt, so that when an obstacle is located between both grounding rolls, This serves to prevent the stepped belt from being lifted and subjected to strong tensile force.

(Operation) When the deceleration motor 12 is driven in the state shown in Fig. 1 and the drive roll 10 is rotated clockwise as shown by the arrow, the ground rolls 8 and 9 are rotated clockwise by the stepped belt 11, and the gate 2 is rotated to the right. Move to (open). If an obstacle 19 as shown in the figure exists during the movement of the gate,
Due to the stepped portion on the outer surface of the stepped belt 11 hanging on the grounding roll 9, the grounding roll 9 can easily run over an obstacle as shown in FIG. After that, when an obstacle is located in the middle between both ground rolls 8 and 9, the bottom part of the stepped belt 11 is bent upward, but this bending is suppressed to a certain amount by the belt protection plate 20. Then, as shown in FIG. 4, the ground roll 8 moves over the obstacle. The movement at this time is based on the same principle as the movement of the tracks of tanks and bulldozers, and since it has two ground rolls at the front and back, even if one roll lifts off the ground, the other roll will always touch the ground or an obstacle. Because of this, the stepped belt does not stop rotating and continues to rotate smoothly.

When installing the automatic opening/closing device according to the present invention to a gate, it is installed so that the load of the gate is applied to the ground with a constant pressure through a stepped belt under normal conditions. When the gate runs over an object, the tilting plate 6 tilts and the gate is slightly lifted up via the pin 7 and the support plate 1 as shown in FIG. 3h. Therefore, it is necessary to provide a gap in the hinge portion of the double-folding gate to absorb the lifting amount of the tip of the gate, or to use a hinge that allows the tip to be lifted and moved.

The stopper 17 is used to prevent the tilting plate 6 from tilting more than necessary, and its position is determined depending on how high an obstacle it can overcome.

Therefore, when the grounding roll moves with the inclined surface of the tilting plate in contact with this stopper, the load is distributed by the pin 7 and the stopper 17 to lift the gate, so the grounding roll is moved from above the obstacle. This can reduce the impact on the pin when the ball goes down.

The above phenomenon occurs in the same way when driving in the opposite direction.

(Effect of the invention) As mentioned above, the present invention uses at least two ground rolls to drive the gate by a stepped belt, and the tilting plate supporting the ground rolls is moved back and forth in the direction of movement of the rolls. Since it is designed to tilt, even if there is a slight depression, the grounding roll will fit into the depression and touch the ground, so no slipping will occur.Also, even if an obstacle is placed in front of the grounding roll, the grounding roll will not slip. Due to the action of the attached belt, the ground roll can easily and smoothly overcome obstacles.

Moreover, since it is structurally simple, the cost is low and it has high industrial applicability.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a front view of an automatic opening/closing device installed on the inner surface of one open end of a double-folding gate, Fig. 2 is a side view of the same, and Fig. 3 shows an obstacle. FIG. 4 is a front view schematically showing the stepped belt in a state where it has run over an obstacle. 1... Support plate, 2... Gate, 3... Bolt,
4, 5... Inclined surface, 6... Tilt plate, 7...
Pin, 8, 9...Ground roll, 10...Drive roll, 11...Stepped belt, 12...Deceleration motor, 14, 15...Step part, 17...Stopper,
18... Angle space, 19... Obstacle, 20... Belt protection plate.

Claims (1)

[Claims for Utility Model Registration] 1. A support plate 1 is provided vertically on the inner surface near the tip of the gate 2, and a tilting plate 6 is provided on the support plate 1.
The center of the upper part of the tilting plate is pivotally supported by a pin 7 to enable the tilting plate to rotate in parallel with the support plate 1, and reversibly driveable grounding rolls 8 and 9 are provided on at least the left and right lower ends of the tilting plate. This automatic gate opening/closing device is constructed by extending a stepped belt 11 around the ground roll so as to be in contact with the ground, and transmitting the rotation of a deceleration motor 12 to either of the ground rolls. 2. The support plate 1 has a stopper 1 on the top of the tilting plate 6 for regulating the rotation of the tilting plate 6.
7. The automatic gate opening/closing device according to claim 1 of the utility model registration claim.