JP2001003664A - Vertically swinging gate device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize the occasion to let two persons pass through a gate at a time by shortening a distance needed to shut off passage. SOLUTION: This vertically swinging gate device is installed on one or each side of a passageway to open and close the passageway. The gate device comprises a drive shaft provided to extend in the direction of passage and freely rotationally held in position, a driving motor 32 connected to one end of the drive shaft via a torque limiter 30, a braking part 34 and a rotary position detecting part 36 provided on the drive shaft, a gate support shaft 40 provided perpendicular to the drive shaft, a gate member 24 pivotally attached to the gate support shaft 40, and a shock absorber provided between the base part of the gate member 24 and the drive shaft. The gate member 24 is swung from an approximately downward orientation to an approximately horizontal orientation by rotation of the drive shaft caused by the driving motor 32, to open or close the passageway.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oscillating gate device installed on a passage to control entrance and exit by various cards and tickets. More specifically, the present invention relates to a vertically oscillating gate device in which a gate member swings from a substantially downward direction to a substantially horizontal direction to open and close a passage.

[0002]

2. Description of the Related Art For example, libraries, public pools, bicycle parking lots,
At various facilities such as leisure land, theme parks, and research laboratories, gate devices are installed on the passageways to eliminate unauthorized visitors, manage visitors, residents, and exits, and reduce the number of entrance / exit organizers. I have. When the visitors present various ID cards such as an IC card, a magnetic card, and a bar code card, and a ticket, the gate device is opened and closed by reading the card.

A conventional gate device of this type is a so-called "flapper gate" in which a gate member 10 swings horizontally as shown in FIGS. The one-way one in which the gate member swings in a range of 90 degrees (one dedicated to “entry” or the “exit”), and the one in which the gate member swings in a range of 180 degrees (“ It has two functions of "entry" and "exit" and can cope with any of them), and there are a type where the gate member is installed on one side of the passage and a type where it is installed on both sides. FIG. 9 and FIG. 10 show a two-way compatible type and a two-sided installation type.

[0004] The width W of the passage in the gate device may be about 55 cm when only pedestrians need to be considered, but when the passage with a wheelchair or a bicycle in a bicycle parking lot is considered. Requires about 90 cm or more. The swing opening and closing by the gate member 10 is electrically performed by a drive motor, and is usually designed to be able to open and close in about one second. The entrance / exiter presents the card, and if permitted, the gate member is opened, the passage of the entrance / exit is detected by the regression reflection type optical sensor 12 or the like, and after confirming the passage, the gate member is closed. If an unauthorized card is presented, the gate member will remain closed and simultaneously issue an alarm.

[0005]

Even in the configuration in which the gate members are provided on both sides, the projecting length W of the gate member 10 needs to be about half the width of the passage. As shown in FIG.
In the horizontal swing type gate device, the optical sensor 12 for passage detection must be installed at a position separated by a distance equal to or more than the distance corresponding to the protruding length of the gate member 10, and a large passage blocking distance L is required. I do. That is, if a passerby passes through the position of the pivot shaft 10a of the gate member 10 and does not pass through the tip end position of the gate member 10 which is further opened, the gate member 10
Cannot be closed. Therefore, the passage of the pedestrian is detected by the optical sensor 12 after passing through the leading end position of the gate member 10 which is opened, and the gate member 10 is closed. For example, in a wide gate device having a width of about 90 cm or more so that a wheelchair can pass, the protruding length of the gate member needs to be 40 to 45 cm per side, and the passage blocking distance L is at least about 45 to 50 cm. .

As described above, when the passage cutoff distance L becomes longer,
It is not possible to prevent a so-called "bring-in", in which another person continues to pass illegally following the permitting person. This is because the gate member will not be closed if the next passerby enters the range of the large passage blocking distance L when the passer passes the optical sensor 12 for passage detection. Such inconvenience becomes more serious as the width W of the passage becomes larger.

[0007] For proper maintenance of facilities, it is important to accurately grasp the visitors. However, with the conventional gate device as described above, it is extremely difficult. In particular, in facilities such as leisure lands and theme parks where high entrance fees are collected, illegal entry due to such bringing-in will cause a great deal of damage in business, and therefore it is necessary to prevent it as much as possible.

SUMMARY OF THE INVENTION An object of the present invention is to provide a swing type gate device which is designed so as to shorten the passage blocking distance and minimize so-called "pull-in".

[0009]

SUMMARY OF THE INVENTION The present invention is a vertically oscillating gate device which is installed on one or both sides of a traffic path and opens and closes the traffic path. This device includes a drive shaft provided to extend in the traffic direction and rotatably held, a drive motor coupled at one end of the drive shaft via a torque limiter, and a braking unit provided on the drive shaft. And a rotation position detection unit, a gate support shaft provided to be orthogonal to the drive shaft,
A gate member pivotally attached to the gate support shaft; and a shock absorber provided between the base of the gate member and the drive shaft. The passage is opened and closed by swinging in a range up to a substantially horizontal direction, which is characteristic in this point.

The drive shaft preferably has a gate support shaft mounting portion having a rectangular cross section. Further, it is best to use a cylindrical vibration-proof rubber as the shock absorber provided between the base of the gate member and the drive shaft. Specifically, a holding member is arranged on both sides of the gate support shaft in parallel with the gate shaft, and the holding member is fixed to the drive shaft, and a plurality of holding members are provided on each side between the base of the gate member and the two holding members. Adhesive rubber is installed. Thus, even if a passerby exerts a horizontal pressing force on the gate member, the gate member is displaced to some extent by the anti-vibration rubber and the impact is alleviated, thereby protecting the passerby and excessively driving the drive shaft. Prevents damage by preventing the action of force.

The torque limiter used in the present invention includes:
A drum connected to the end of the rotation shaft of the drive motor, a holder surrounding the outside of the drum and connected to one end of the drive shaft, and arranged on both sides in the holder so as to face the outer peripheral surface of the drum. It is preferable that the shoe be provided, a pressing spring that urges both shoes inward, and a spring force adjusting mechanism of the pressing spring. In this configuration, in normal operation, the rotational force of the drive motor is transmitted to the drive shaft by frictional connection between the drum and the shoe, and the gate member swings.
When an unexpected force is applied to the gate member by the pedestrian, the drum slides on the shoe and the rotational force of the drive motor is not transmitted to the drive shaft, and the pedestrian is protected without moving the gate member.

[0012]

1 is an external view showing an embodiment of a vertically oscillating gate device according to the present invention, and FIG. 2 is an explanatory plan view thereof. This device is installed on one side or both sides of a traffic path to restrict the traffic path and to open and close the traffic path. Here, an example is shown in which the gate members open and close on both sides of the traffic path.

The housing 20 containing the driving device, the control device, and the like has a vertically elongated recess 22 formed in the center on the inside (passage side) thereof, and the gate member 24 can be housed in the recess 22. It has become. The gate member 24 is supported on its base end side so as to be able to swing up and down in a range of about 90 degrees with a horizontal axis parallel to the traffic direction. It is stored (gate open) and rises almost horizontally to close the gate. 1 and 2 show a state in which the gate is closed.

This gate device reads information such as a card presented or inserted by a passer-by, and opens and closes the gate member accordingly, as in the conventional device.
When the gate member is not opened because the presented card is inappropriate, the alarm lamp 80 is turned on or an alarm sound is generated to notify the user.

The passage of a pedestrian is detected by the optical sensor 26, and the gate member 24 is closed immediately after confirming the passage. The optical sensor 26 is, for example, a recursive reflection type, and is a combination of a light emitting / receiving element provided on one side and a reflector (mirror body) provided on the opposite side. Perform pass detection. In the gate device according to the present invention, FIG.
In contrast to the conventional device shown in FIG. 10, as shown in FIG.
Can be installed. This is made possible by making the gate member 24 a vertical swing type. Immediately after a pedestrian has passed the point of the opened gate member 24, the passage can be detected by the optical sensor 26, so that the passage cutoff distance L becomes very short, and an extra space allowing "take-in" occurs. Absent.

FIG. 3 schematically shows a schematic configuration of a driving section of the present gate device. This gate device is provided with a drive shaft 28 provided so as to extend in a passing direction along a traffic path and rotatably held, and a torque limiter 3 provided at one end of the drive shaft 28.
A drive motor 32 coupled to the drive shaft
And a gate member 24 supported by the drive shaft 28.

The drive motor 32 is a forward / reverse rotation motor, and applies a rotational force to the drive shaft 28. The torque limiter 30 is a kind of clutch mechanism. When an excessive force is applied to the load, the torque limiter 30 idles, and the driving force of the driving motor 32 is
Function so that it is not transmitted to Braking unit 34
Is a brake mechanism for immediately stopping the rotation operation when the drive shaft 28 rotates to a predetermined position, and the rotation position detector 36 detects the rotation position of the drive shaft 28.

FIGS. 4 and 5 show details of the support structure of the gate member. FIG. 5 is a plan view. An intermediate portion 28a (near the gate member mounting position) 28a of the drive shaft 28 has a quadrangular prism shape, and a gate support shaft 40 is provided so as to be orthogonal to the drive shaft 28. The gate member 24 has a shape in which a stainless steel pipe is bent into a U shape, and is fixed to the rectangular parallelepiped block 42 at a base end. The gate member 24 is pivotally attached to the gate support shaft 40 by a rectangular parallelepiped block 42 at the base end. Rectangular parallelepiped block 4
Screw rods 44 are implanted on both side surfaces of 2 and cylindrical anti-vibration rubbers 46 serving as shock absorbers are loosely fitted therein. The tips of the upper and lower threaded rods 44 on one side are inserted into holes on one surface of a holding member 48 having an L-shaped cross section, and are fixed at the free length of the vibration-proof rubber 46 with a nut 50. Is joined to the surface of the intermediate portion 28a of the drive shaft and fixed with screws 52. Both ends of the vibration-proof rubber 46 are bonded to the rectangular parallelepiped block 42 and the holding member 48 with an adhesive.

As shown in FIG. 5, the drive shaft 28
In the vicinity of the quadrangular columnar intermediate portion 28a, the concave wall 2
The gate member 24 is supported by a bearing 54 attached to the second member 2a, and realizes smooth rotation of the gate member 24.

The gate member 24 has a structure capable of turning to some extent in a horizontal plane about the gate support shaft 40.
Since it is supported by the vibration isolating rubbers 46 on both sides, the impact applied to the gate member 24 (generated when a passerby tries to pass by force) is absorbed by the vibration isolating rubber 46, and the gate member 24, Prevents excessive loads from being applied to the support mechanism, drive mechanism, etc. In particular, regarding the strain absorption of rubber, the relationship between load and displacement differs between compression and tension. Therefore, in this embodiment, both ends of the vibration isolating rubber 46 are adhered,
6, the resistance is initially small when a load is applied to the gate member 24, the resistance increases as the degree of deformation increases, and an ideal cushion feeling is generated, and the vibrations cancel each other. Vibration immediately after the load is removed can be substantially eliminated. For example, a combination of a spring and a damper can be used as such a shock absorber, but since the mechanism is large and expensive, it is optimal to use rubber as described above.

Next, FIG. 6 shows an example of a torque limiter suitable for the present invention. The torque limiter is provided as a safety measure against vertical swinging of the gate member, and has a function of stopping transmission of driving force to the gate member when a load equal to or more than a set value is applied. The torque limiter used in this embodiment has a structure in which a shoe is arranged to face the outer peripheral surface of the drum, and the shoe is pressed by a spring.

The drum 6 is attached to the end of the rotating shaft 60 of the drive motor.
2 is connected. An inner holder 64 and an outer holder 66 are provided in a double manner so as to surround the outside of the drum 62. The inner holder 64 includes two substantially U-shaped members arranged opposite to each other.
This is a split structure, in which a shoe 66 and a coil spring 68 for applying an inward pressing force to the shoe 66 are incorporated. It goes without saying that the inner surface of each shoe 66 is a curved surface that matches the outer peripheral surface of the drum. The opposing U-shaped members are connected by a tightening adjustment screw 70 at an outer position, and the transmittable torque is managed by adjusting the tightening degree of the tightening adjustment screw 70. One end of a drive shaft 28 is connected to the outer holder 66, and the gate member swings by the drive shaft 28.

When a load equal to or more than a set value is applied to the gate member when the gate member swings, the drum 62 and the shoe 66 slip, and the rotational force of the drive motor is not transmitted to the drive shaft 28. The swing of the gate member stops. Thereafter, when the excessive load on the gate member is released, the drum 62 and the shoe 66 are coupled by frictional force, and the rotational force of the drive motor is transmitted to the drive shaft 28.

Incidentally, a commercially available torque limiter is of a type in which a pressing force is applied between the disk plates by a leaf spring. Although this type works in principle, the product varies greatly due to the dimensional accuracy of the members used and the wear of the disk plate.The pressure due to the leaf spring is not proportional to the load and displacement due to the nature of the leaf spring, so when the slip starts, Configuration management is very difficult. Therefore, a dedicated torque limiter having the structure as in the above embodiment is optimal. In the torque limiter having the structure shown in FIG. 6, the starting point of the coil spring 68 can be adjusted by the tightening adjustment screw 70, so that the dimensional accuracy of the parts to be used is not so much required, and quantitative torque management is possible.

FIGS. 7A and 7B are explanatory views showing an example of the rotational position detecting section, wherein A is a view as viewed from the axial direction, and B is a plan view. A disk 72 having a detection piece 72a protruding in one direction from the outer circumference is fixed to the drive shaft 28, and an optical sensor 74 capable of transmitting and receiving light so as to sandwich the detection piece 72a is substantially 90 ° in the drive axis direction.
Two are installed at different positions. The light sensor 74 has a light emitting element and a light receiving element arranged opposite to each other, and the light is blocked by the detection piece 72a so that the arrival of the detection piece 72a, that is, the rotation position of the drive shaft 28, and thus the swing position of the gate member are determined. It is to detect. One optical sensor detects a state in which the gate member is lifted in the horizontal direction (closed state), and the other optical sensor detects a state in which the gate member hangs vertically (open state). These detection signals stop the rotation operation of the drive motor and activate the braking unit to stop the swing of the gate member at a predetermined position.

FIG. 8 is a front view of a main part of the vertically swinging gate device. By the rotation of the drive shaft by the drive motor,
As shown, the gate member swings from a position directly below (shown by a dotted line) to a substantially horizontal position to open and close the passage.
As described above, the gate member is stopped at a predetermined position by the braking unit, but in order to prevent damage to equipment etc. even if there is unexpected trouble, the lower and upper parts of the equipment housing Are provided with rubber cushions 76 and 78, respectively.

The only disadvantage of the above-described torque limiter of the present invention shown in FIG. 6 is that the outer diameter of the torque limiter is disadvantageously increased due to its structure. As can be seen from FIG.
Since the center O of the swing is located deeper (retracted from the front of the device), there is no problem even if the outer diameter of the torque limiter is increased.

The apparatus of the above embodiment is similar to the conventional one,
By arranging the same thing on the left and right sides of the traffic path facing each other, a bidirectional opening / closing gate device is configured. Of course, the present invention can be applied to a configuration in which only one side is provided. Opening and closing of the gate can be controlled by presentation of arbitrary information such as various cards and tickets. A portion for receiving a card, a ticket, or the like may be incorporated in the gate device main body, or a post for receiving a card, a ticket, or the like may be provided separately from the gate device main body.

When the present gate device is applied to an entry / exit gate of a bicycle parking lot, it is necessary to provide a waterproof structure in order to install the device outdoors in principle. The component that interferes with waterproofing is the alarm lamp 80 located on the housing. But,
The alarm lamp can be mounted above the recess (non-waterproof area) that houses the gate member, and before and after that, necessary equipment and control circuits can be installed as a completely waterproof area to prevent flooding.

[0030]

As described above, according to the present invention, since the gate member swings up and down, the passage sensor can be installed very close to the swing fulcrum of the gate member. Can be shortened to the so-called "take-in"
Can be minimized.

Further, in the device of the present invention, even if an excessively large load in the vertical direction is applied to the gate member, the driving force is cut off by the torque limiter, and the horizontal load is reduced by the shock buffer. Can be protected, and the occurrence of damage to equipment can be prevented, and a safe and highly reliable system can be constructed.

[Brief description of the drawings]

FIG. 1 is an external view showing an embodiment of a vertically oscillating gate device according to the present invention.

FIG. 2 is an explanatory plan view thereof.

FIG. 3 is a schematic diagram showing an overall configuration showing an example of the internal mechanism.

FIG. 4 is a detailed view showing a support structure of the gate member.

FIG. 5 is a plan view thereof.

FIG. 6 is an explanatory diagram showing an example of a torque limiter.

FIG. 7 is an explanatory diagram of a rotation position detection unit.

FIG. 8 is an explanatory view of the gate device according to the present invention as viewed from a traffic direction.

FIG. 9 is an external view showing an example of a conventional gate device.

FIG. 10 is a plan view thereof.

[Explanation of symbols]

 Reference Signs List 20 housing 22 recess 24 gate member 28 drive shaft 30 torque limiter 32 drive motor 34 braking unit 36 rotation position detector 40 gate support shaft

Claims (3)

[Claims] An oscillating gate device installed on one side or both sides of a traffic path to open and close the traffic path, comprising: a drive shaft provided to extend in the direction of the traffic path and rotatably held; A drive motor coupled at one end of the drive shaft via a torque limiter, a braking unit and a rotational position detection unit provided on the drive shaft, a gate support shaft provided orthogonal to the drive shaft, and the gate support A gate member pivotally attached to the shaft, and a shock absorber provided between the base of the gate member and the drive shaft, and the gate member is rotated substantially horizontally from a substantially downward direction by rotation of the drive shaft by a drive motor. A vertically oscillating gate device characterized by swinging up and down to open and close a passage. 2. The gate support shaft mounting portion of the drive shaft has a rectangular cross section, and the shock absorber provided between the base of the gate member and the drive shaft is a cylindrical vibration-proof rubber. A holding member is arranged on both sides of the gate member in parallel with the gate shaft, and the holding member is fixed to the drive shaft, and a plurality of anti-vibration rubbers are provided between the base of the gate member and the two holding members. The vertically oscillating gate device according to claim 1, wherein 3. A torque limiter comprising: a drum connected to an end of a rotary shaft of a drive motor; a holder surrounding the outside of the drum and connected to one end of a drive shaft;
The shoe according to claim 1, further comprising a shoe disposed on both sides of the drum so as to face the outer peripheral surface of the drum, a pressing spring for urging both shoes inward, and a spring force adjusting mechanism of the pressing spring. Vertical swing type gate device.