JP2016069843A - Gate device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a size of a return operation mechanism of a released gate bar for promptly stabilizing a position of the gate bar during the return operation, thereby preventing the gate bar from protruding toward a roadway during the return operation.SOLUTION: The following steps are carried out with a gate device 1: a return operation is started for a gate bar 7 when the gate bar 7 comes into a released state; a return operation drive arm 38 of a return operation drive part 8 fitted on a gate bar base part 6 rotates the gate bar 7 in a release direction, and brings the gate bar to a release completion state in which the gate bar is withdrawn from a driveway 2; a horizontal rotation shaft 9 rotates in a direction to erect the gate bar base part 6, while the return operation drive arm 38 retains the gate bar 7 in the release completion state; and the return operation drive arm 38 rotates the gate bar 7 in a direction opposite of the release direction while the gate bar base part 6 remains erect, to bring the gate bar to a fixed state.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a gate device that restricts the passage of a vehicle or the like at a toll gate on a highway or a toll road, or an entrance / exit of a parking lot, and more particularly to a gate device that automatically returns a released gate bar.

  2. Description of the Related Art Conventionally, gate devices are installed, for example, at ETC (Electronic Toll Collection System) gates at toll gates on expressways and toll roads and at entrances and exits of toll parking lots. The gate device regulates the passage of the vehicle by lying down on the gate bar (in a closed state) and blocking the roadway. Normally, the vehicle does not collide with a gate bar that blocks the road. However, for example, when a vehicle that has forgotten to insert an ETC card into the ETC on-board unit passes through the ETC gate, or a vehicle that enters the parking lot exits without waiting for the gate bar to open due to intention or negligence. For example, the vehicle may collide with the gate bar. Some gate devices rotate (release) the gate bar in the vehicle traveling direction when the vehicle collides in order to prevent the gate bar from being damaged by the vehicle collision. Some gate devices return a released gate bar automatically or remotely.

  For example, in the release recovery mechanism of the gate device disclosed in Patent Document 1, when a blocking bar held in the blocking bar holder in a horizontal direction is collided by a vehicle, the blocking bar holder into which the blocking bar is inserted is centered on the holder rotation axis. And is released from the connecting member to be parallel to the blocking bar drive rotation axis. Thereafter, the blocking bar driving rotary shaft is rotated together with the connecting member, and the blocking bar holder into which the blocking bar is inserted is positioned above the blocking bar driving device. At that time, the arm provided on the upper surface of the blocking bar driving device rotates the blocking bar so as to push the blocking bar from below, thereby releasing the blocking bar holder into which the blocking bar is inserted into the connecting member. Further, the blocking bar rotating shaft is rotated to restore the blocking bar in the horizontal direction.

  Further, in the vehicle traffic breaker disclosed in Patent Document 2, an opening / closing operation is performed by rotating between a return drive unit, a blocking position where the return drive unit blocks the passage of the vehicle, and a permission position allowing the vehicle to travel. A blocking rod, a release shaft that rotates the blocking rod in a release direction that releases an impact caused by the vehicle, and a transmission mechanism that transmits the rotation of the return drive unit to the release shaft only when the blocking rod rotates in the release direction. Provide. The release shaft is provided on a support arm that supports the blocking bar. Then, when the release shaft is rotated by the rotation of the return drive unit, the blocking bar is rotated in the return direction that is opposite to the release direction. In addition, the vehicle traffic breaker includes a latch mechanism that includes a latch device and a latch hook to hold the blocking bar in a released state.

JP 2011-252309 A JP 2012-17643 A

  However, in the gate device as in Patent Document 1, when the released blocking bar is restored, the bent blocking bar is moved above the blocking bar driving device, and then is moved to the upper surface of the blocking bar driving device. The blocking bar is pushed up by the arm provided. For this reason, complicated mechanism parts are installed in the upper part of the blocking bar driving device, and there is a problem that the entire blocking bar driving device is considerably increased in size.

  Further, in the gate device such as the vehicle traffic breaker of Patent Document 2, when the return operation from the release state is performed, the lifting operation of the arm portion and the recovery operation of the blocking rod to the non-release state are performed simultaneously. Since the irregular movement trajectory in which the blocking rod rises while projecting (projecting) greatly toward the roadway once, there is a risk that the following vehicle may collide with the blocking rod during the recovery operation.

  Further, the vehicle traffic breaker disclosed in Patent Document 2 has a configuration in which the blocking rod is held in the released state by engaging the latch device with the latch hook when returning the blocking rod after the release operation by the return driving unit. . However, the operation of the blocking rod released by the collision of the vehicle is steep, and the latch device may not engage the latch hook. In addition, if the collision is weak, such as when a motorcycle or the like grazes the blocking rod, the releasing operation of the blocking rod may not change to a state parallel to the roadway. In these cases, there is a possibility that the blocking rod may protrude greatly toward the road during the return operation, and the blocking rod may collide with the following vehicle, which is extremely dangerous.

  In the gate device, the gate bar such as the blocking bar and the blocking bar and the gate bar base portion such as the connecting member and the support arm are usually locked and integrated by a locking mechanism or the like in an initial state before the release. It is fixed. In such a gate device, a spring or the like is interposed between the gate bar and the gate bar base to assist the rotation of the gate bar at the time of release, and the gate bar is 90 degrees with respect to the gate bar base when the gate bar is released. Some have a mechanism that urges them to rotate. However, in such a mechanism, the holding force of the locking mechanism that holds the gate bar at the base of the gate bar is offset by the biasing force of the spring, and the gate bar is biased in the release direction before release, so the gate bar is released. Variations will occur in the force to perform.

  The present invention has been made in view of, for example, the above-described problems, and an object of the present invention is to reduce the mechanism space for returning the released gate bar, and the position of the gate bar during the returning operation. It is an object of the present invention to provide a compact and inexpensive gate device that can quickly stabilize the gate bar and can prevent the gate bar during the returning operation from protruding to the roadway side.

  In order to solve the above problems, a first gate device of the present invention is a gate device that restricts the passage of a moving body on a roadway, and is opposite to a main body portion and a moving body traveling direction parallel to the roadway. A horizontal rotation shaft attached to the main body so as to protrude to the side, and is formed in an elongated shape, and is attached to the horizontal rotation shaft so that its longitudinal direction is perpendicular to the horizontal rotation shaft, A gate bar base that is turned by the horizontal turning shaft so as to lie down when blocking the roadway and stand up when opening the roadway, and is formed in a long shape, and one end in the longitudinal direction thereof is While being attached to the gate bar base so as to be pivotable in the release direction that is pivotally supported by the gate bar base and moving in the moving body traveling direction, and in the opposite direction, it is integrally fixed to the gate bar base and is in a fixed state. , Predetermined external force A gate bar that is detachably provided on the gate bar base so that the integrated fixing with the gate bar base is released by being received and is in a released state, and a return drive unit that is attached to the gate bar base side, The return drive unit includes a return drive arm that rotates the gate bar in the release direction and the opposite direction, and starts the return operation of the gate bar when the gate bar is in the release state. The return drive arm turns the gate bar in the release direction to make a transition to the release completion state where the gate bar is retracted from the roadway, and the horizontal drive is performed while the gate bar is held in the release completion state by the return drive arm. The shaft is rotated in the direction in which the gate bar base is raised, and the gate bar base is raised. The return drive arm condition is characterized by performing a fixed state return operation for shifting the gate bar to the fixed state is rotated in a direction opposite to the said release direction.

  According to the first gate device of the present invention, the return drive arm on the base side of the gate bar rotates following the gate bar that has been released, and moves upward while holding the gate bar in the release completed state. Can be returned to the fixed state. For this reason, it is possible to prevent the gate bar from protruding toward the roadway during the return operation of the gate bar. Furthermore, since the return drive arm is connected to the gate bar base, it is not necessary to increase the size of the main body, and a compact and inexpensive gate device can be provided.

  In order to solve the above-mentioned problem, the second gate device of the present invention is the above-described first gate device of the present invention, wherein the gate bar returns to the vicinity of the release shaft that is the center of rotation with respect to the gate bar base. The return drive unit has a return drive shaft coaxial with the release shaft, and the return drive arm extends from the return drive shaft to the return follower to return the return It is provided so as to be rotatable about a drive shaft.

  According to the second gate device of the present invention, the mechanism for rotating the gate bar with respect to the gate bar base can be realized by a simple mechanism for causing the return drive arm to follow the return follower.

  In order to solve the above-described problem, the third gate device of the present invention is the above-described first or second gate device of the present invention, wherein the horizontal rotation shaft is configured to move the gate bar base portion in the fixed state returning operation. After the standing and stopping, the return drive arm rotates the gate bar in the direction opposite to the release direction.

  According to the third gate device of the present invention, it is possible to realize a situation in which the gate bar does not reliably protrude toward the roadway side.

  In order to solve the above-described problem, the fourth gate device of the present invention is the above-described first or second gate device of the present invention, wherein the fixed state returning operation is such that the weight of the gate bar is released from the roadway side. After the gate bar is rotated to an inclination angle that greatly acts in the direction, the return drive arm releases the release completion state of the gate bar, and the release direction of the gate bar by the return drive arm Is controlled so as to prevent the gate bar from projecting to the roadway by synchronizing the rotation in the reverse direction with the rotation in the direction of raising the gate bar base by the horizontal rotation shaft. .

  According to the fourth gate device of the present invention, since the weight load of the gate bar related to the return drive arm is reduced by starting the return operation of the gate bar in the turning process of the gate bar base, the return drive motor of the return drive unit In addition, it is possible to reduce the size of the mechanism unit such as the gears, and to configure a return drive unit that is compact and inexpensive. In addition, the time required for the return operation of the gate bar can be shortened.

  In order to solve the above problems, an fifth gate device of the present invention is the above-described fourth gate device of the present invention, comprising: an arm angle sensor that detects a rotation angle of the return drive arm of the return drive unit; A gate angle sensor for detecting a rotation angle of the horizontal rotation shaft, and at least based on the rotation angle detected by the arm angle sensor and the gate angle sensor in the fixed state return operation, The return drive arm and the horizontal rotation axis are controlled synchronously.

  According to the fifth gate device of the present invention, in the synchronous control of the return drive arm and the horizontal rotation shaft, the other end in the longitudinal direction of the gate bar is used by using the rotation angle detected by the arm angle sensor and the gate angle sensor. It is possible to easily adjust the rotation locus so that it does not protrude toward the road. In addition, by using these rotation angles, it is possible to accurately control following the fluctuation of the operation load due to external factors such as wind pressure and rainfall.

  According to the present invention, the gate device can reduce the mechanism space for returning the released gate bar, and can quickly stabilize the position of the gate bar during the return operation. It is possible to prevent the gate bar from protruding to the roadway side, and it is possible to provide a compact and inexpensive.

In the gate apparatus which concerns on the 1st Embodiment of this invention, it is a perspective view which shows the state which the gate bar closed. In the gate apparatus which concerns on the 1st Embodiment of this invention, it is a perspective view which shows the state which the gate bar opened. It is a perspective view which shows the state which the gate bar released in the gate apparatus which concerns on the 1st Embodiment of this invention. In the gate apparatus which concerns on the 1st Embodiment of this invention, it is a perspective view which shows the intermediate state of the release return operation | movement of a gate bar. In the gate apparatus which concerns on the 1st Embodiment of this invention, it is a perspective view which shows the return drive part before the gate bar of a fixed state, a gate bar base, and attachment. In the gate apparatus which concerns on the 1st Embodiment of this invention, it is a perspective view which shows the gate bar of a release state, a gate bar base, and a return drive part. It is a top view which shows the internal structure of the return drive part in the gate apparatus which concerns on the 1st Embodiment of this invention. It is a front view which shows the internal structure of the return drive part in the gate apparatus which concerns on the 1st Embodiment of this invention. It is a disassembled perspective view which shows the return drive part in the gate apparatus which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the electric constitution of the gate apparatus which concerns on the 1st Embodiment of this invention. FIG. 6 is an operation explanatory diagram illustrating a return drive unit in an initial state in the gate device according to the first embodiment of the present invention. In the gate apparatus which concerns on the 1st Embodiment of this invention, it is operation | movement explanatory drawing which shows the return drive part when a gate bar releases. In the gate apparatus which concerns on the 1st Embodiment of this invention, it is operation | movement explanatory drawing which shows the return drive part of the state which started release return operation | movement. In the gate apparatus which concerns on the 1st Embodiment of this invention, it is operation | movement explanatory drawing which shows the return drive part of the state which started the return to the fixed state of a gate bar. In the gate apparatus which concerns on the 1st Embodiment of this invention, it is operation | movement explanatory drawing which shows the return drive part of the state in the middle of returning a gate bar to a fixed state. In the gate apparatus which concerns on the 1st Embodiment of this invention, it is operation | movement explanatory drawing which shows the return drive part of the state which returned the gate bar to the fixed state. It is a flowchart which shows the release return operation | movement in the gate apparatus which concerns on the 1st Embodiment of this invention. It is operation | movement explanatory drawing which shows the release return operation | movement in the gate apparatus which concerns on the 2nd Embodiment of this invention. It is a flowchart which shows the release return operation | movement in the gate apparatus which concerns on the 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are preferable specific examples of the present invention and disclose various preferable techniques, but the technical scope of the present invention is not limited to these embodiments.

  First, the gate device 1 according to the first embodiment of the present invention will be described. As shown in FIG. 1 and FIG. 2, the gate device 1 is a vehicle that travels on the roadway 2 by a gate bar 7 at a gate such as a toll gate of a highway or a toll road, or an entrance of a toll parking lot ( For example, it is installed on an island 3 which is a concrete platform formed along the roadway 2. The gate device 1 is preferably arranged with the surface on the roadway 2 side as close as possible to the curb portion on the roadway 2 side of the island 3, and the closer the approach, the shorter the length of the gate bar 7 is. However, it is desirable to determine the installation position of the gate device 1 of the first embodiment in consideration of the release state of the gate bar 7.

  FIG. 1 shows a state (closed state) where the gate bar 7 is closed and the roadway 2 is blocked, and FIG. 2 shows a state (open state) where the gate bar 7 is opened and the roadway 2 is opened. 3 shows a state in which the gate bar 7 is released, and FIG. 4 shows an intermediate state in the release return operation of the gate bar 7. In the following, for convenience of explanation, when the gate is viewed from a point on the road 2 before the passage of the gate, that is, in the traveling direction of the vehicle on the road 2, the front side is “front” and the other side (back side) ) Is “back”, the right side is “right”, the left side is “left”, the upper side is “up”, and the lower side is “lower”. A vehicle traveling on the roadway 2 normally approaches the gate device 1 from the front of the gate device 1, and then proceeds to the rear of the gate device 1. That is, the front-rear direction of the gate device 1 is a vehicle traveling direction (moving body traveling direction) parallel to the roadway 2.

  The gate device 1 includes a main body housing 4 (main body portion) formed in a rectangular column shape, and the main body housing 4 is fixed on the island 3 by a main body base 5. Further, in the gate device 1, the gate bar base 6 and the gate bar 7, which are members that block the roadway 2, and the return drive unit 8 are attached to the horizontal rotation shaft 9 provided on the upper front side of the main body housing 4. .

  The main body housing 4 includes a horizontal rotation shaft 9 extending in the horizontal direction (front-rear direction), and a gate drive unit 40 (see FIG. 10) for driving the horizontal rotation shaft 9 together with the gate bar base 6 and the gate bar 7. And a control unit 10 (see FIG. 10) for overall control of the gate device 1. The gate driving unit 40 and the control unit 10 will be described later.

  The horizontal rotation shaft 9 is disposed so as to protrude forward (opposite to the vehicle traveling direction) from the inside of the main body housing 4 through the opening on the front surface of the main body housing 4. The horizontal rotation shaft 9 is connected to the gate drive unit 40 inside the main body housing 4 and is rotated by being driven by the gate drive unit 40 (gate drive motor 41 described later). The gate bar base 6 and the gate bar 7 attached to can be integrally rotated. Accordingly, the horizontal rotation shaft 9 can perform an opening / closing operation (vehicle opening / closing operation) of the roadway 2 by rotating the gate bar 7.

  This road opening / closing operation is an operation of blocking / opening the road 2 by causing the gate bar base 6 and the gate bar 7 orthogonal to the horizontal rotation shaft 9 to lie down and stand upright. As shown in FIG. 1, when the horizontal rotation shaft 9 is rotated by the gate bar driving unit 40 to cause the gate bar base 7 to lie down, the gate bar 6 is laid down together with the gate bar base 7, thereby blocking the roadway 2. Thus, the position where the gate bar base 6 and the gate bar 7 lie down is referred to as a “side-down position”. On the other hand, as shown in FIG. 2, when the horizontal rotation shaft 9 is rotated by the gate bar driving unit 40 to raise the gate bar base 6, the gate bar 7 is raised together with the gate bar base 6, thereby opening the roadway 2. The In this way, the position where the gate bar base 6 and the gate bar 7 stand up is referred to as “standing position”.

  The gate bar base portion 6 is a long member formed in a U-shaped cross-section with an opening on the front side, and has a shape that fits one end side of the gate bar 7. The rear surface of the gate bar base portion 6 on one end side in the longitudinal direction (for example, the right side) is fixed to the horizontal rotation shaft 9 and can be rotated with respect to the main body housing 4 according to the rotation of the horizontal rotation shaft 9. It has become. On the other hand, the other end side (for example, the left side) in the longitudinal direction of the gate bar base portion 6 extends in a direction intersecting with the horizontal rotation shaft 9 (for example, a direction orthogonal to the horizontal rotation shaft 9).

  Further, the gate bar base portion 6 is provided with a locking movable portion 12 and the like as a locking mechanism 11 for detachably locking the fitted gate bar 7 on one end side in the longitudinal direction, and short on the other end side in the longitudinal direction. A release shaft 13 is provided that extends in the hand direction (for example, the vertical direction when the gate bar 7 is closed). A round recess 14 slightly smaller than the shaft diameter is formed on the lower surface of the release shaft 13 (see FIG. 5). The circular recess 14 has a shape for fitting a return drive shaft 32 of the return drive unit 8 described later, and the lower surface of the gate bar base 6 and the return drive unit 8 are arranged coaxially with the release shaft 13 and the return drive shaft 32. It is for positioning. Note that positioning bosses, mounting screws (not shown), or the like may be used for positioning the gate bar base 6 and the return drive unit 8.

  Further, the gate bar base portion 6 includes a stopper portion 15 and a proximity sensor 16 on the other end side in the longitudinal direction and on the rear surface side (see FIGS. 7 and 11, etc.), and a release detection switch 44 (see FIG. 10) described later. It has. The stopper portion 15 is a cushion made of, for example, urethane foam, and has a surface parallel to the longitudinal direction of the gate bar base portion 6. The stopper portion 15 is disposed on the rotation path of the contact portion 22 of the return driven portion 21 described later. The proximity sensor 16 is, for example, a metal sensor, and detects that the contact portion 22 of the return driven portion 21 contacts or approaches the stopper portion 15 of the gate bar base portion 6.

  The gate bar 7 is formed in a long bar shape, and has a length that can block the roadway 2 in the closed state. The gate bar 7 is provided on one end side in the longitudinal direction (for example, the right side in the closed state), and attached to the gate bar holding unit 18 and extends to the other end side in the longitudinal direction (for example, the left side in the closed state). And a gate bar main body 19. The gate bar body 19 is formed by covering the other end side of a core made of a lightweight material, for example, an aluminum hollow pipe, with a cushioning material made of foamed urethane or the like. In order to improve visibility from a driver or the like, a laminate such as red and white stripes may be applied to the outer surface portion of the cushioning material constituting the gate bar main body 19.

  The gate bar 7 is attached to the gate bar base portion 6 via a gate bar holding portion 18 on one end side in the longitudinal direction. Specifically, one end in the longitudinal direction of the gate bar holding portion 18 is detachably held by the gate bar base 6, and the other end in the longitudinal direction of the gate bar holding portion 18 is pivotally supported by the release shaft 13 of the gate bar base 6. Yes.

  As shown in FIG. 1 and FIG. 2, the gate bar 7 is normally fitted with a gate bar holding portion 18 on one end side in the longitudinal direction on the gate bar base portion 6, and one end side in the longitudinal direction of the gate bar holding portion 18 on the locking mechanism 11. Thus, the gate bar base 6 is locked and integrated with the gate bar base 6 to be in a fixed state (non-release state). At this time, the longitudinal direction of the gate bar 7 is aligned with the longitudinal direction of the gate bar base 6, and the other longitudinal end of the gate bar 7 is greatly extended in a direction intersecting (orthogonal to) the horizontal rotation shaft 9.

  The gate bar 7 is shown in FIG. 3 and the like when one end in the longitudinal direction of the gate bar holding portion 18 is removed from the gate bar base portion 6 and the integrated fixing (fixed state) with the gate bar base portion 6 is released (released). So that it is in the released state. The released gate bar 7 (gate bar holding portion 18) is rotatable about the release shaft 13 with respect to the gate bar base portion 6.

  The operation of releasing the gate bar 7 and rotating with respect to the gate bar base 6 in this way is hereinafter referred to as “release operation”. Further, the released gate bar 7 rotates about the release shaft 13, and one end portion in the longitudinal direction of the gate bar 7 is separated from the gate bar base portion 6 and the other end portion in the longitudinal direction of the gate bar 7 is directed in the vehicle traveling direction. The direction (clockwise direction when viewed from above) is referred to as “release direction”. Further, the released gate bar 7 is rotated about the release shaft 13 and retracted from the roadway 2, for example, about 90 degrees around the release shaft 13 and the longitudinal direction is substantially the same as the roadway 2. The parallel state (see FIG. 3) is referred to as a “release complete state”.

  The gate bar holding portion 18 includes, for example, a latch portion 20 and the like on one end side in the longitudinal direction as a locking mechanism 11 for detachably locking the gate bar 7 to the gate bar base 6. That is, between the gate bar base portion 6 and the gate bar 7, a locking mechanism 11 including a locking movable portion 12 and a latch portion 20 is provided.

  As shown in FIGS. 1 and 2, the locking mechanism 11 locks the gate bar 7 (gate bar holding portion 18) fitted to the gate bar base portion 6 so that the gate bar 7 is fixed (non-released). Configured to maintain. Note that the locking mechanism 11 has a holding force enough to maintain the locking between the gate bar base 6 and the gate bar 7 even when a force such as vibration or wind pressure is applied due to the road opening / closing operation. That is, the fixed state is a state in which the gate bar base 6 and the gate bar 7 can be opened and closed.

  On the other hand, as shown in FIGS. 3 and 4, the locking mechanism 11 has a force greater than the holding force, for example, an external force applied when the vehicle collides with the gate bar 7, as shown in FIGS. 3 and 4. It is configured to release the locking with the part 18) and bring the gate bar 7 into a released state. The locking mechanism 11 is fitted to the gate bar base 6 by the pressing force when the gate bar 7 in the released state rotates in the direction opposite to the release direction and comes into contact with the gate bar base 6 and is pressed. The combined gate bar 7 is locked. For example, in the locking mechanism 11, the locking movable portion 12 on the gate bar base portion 6 side is pressed by the latch portion 20 on the gate bar 7 side and moves, and then the latch portion 20 is locked. Locked to the base 6.

  Moreover, as FIG. 5 etc. show, the gate bar holding | maintenance part 18 is provided with the return driven part 21 in the other end side rather than the release shaft 13 in a longitudinal direction. The return driven portion 21 protrudes from the rear surface side of the gate bar holding portion 18 and is provided so as to rotate integrally with the gate bar holding portion 18, and includes a contact portion 22 and a return driven pin 23.

  The contact portion 22 is an outer wall surface on one end side in the longitudinal direction (for example, the right side in the closed state of the gate bar 7), for example, a contact surface orthogonal to the longitudinal direction of the gate bar 7. When the gate bar 7 is in a fixed state, the contact portion 22 is in a free state that does not interfere with other members. Further, when the gate bar 7 is released and rotated, the contact portion 22 contacts the stopper portion 15 of the gate bar base portion 6 to restrict further rotation of the gate bar 7. The release limit angle of the gate bar 7 is an angle from when the gate bar 7 is in a fixed state to when the contact portion 22 contacts the stopper portion 15, for example, about 90 degrees clockwise as viewed from above.

  The return driven pin 23 is formed to protrude downward from the gate bar holding portion 18. The return driven pin 23 is provided on the other end side of the release shaft 13 in the longitudinal direction (for example, on the left side in the closed state of the gate bar 7) and in the vicinity of the release shaft 13, and a return drive unit 8 described later returns. The drive arm 38 is disposed on the rotation track.

  The return drive unit 8 drives the gate bar holding unit 18 (gate bar 7) to drive the gate bar base 6 around the release shaft 13, and is similar to the gate bar base 6 as shown in FIGS. It is a member formed in a long shape. FIG. 5 shows a state before the gate bar 7 is fixed and the return drive unit 8 is attached to the gate bar base 6. FIG. 6 shows the state where the gate bar 7 is in the released state and the return drive unit 8 is attached to the gate bar base 6 through the return drive unit 8. FIG. 7 is a view of the internal structure of the return drive unit 8 as viewed from above. FIG. 8 is a view of the internal structure of the return drive unit 8 as viewed from the front. FIG. 9 is an exploded perspective view of the return drive unit 8.

  For example, as shown in FIGS. 7 to 8, the return drive unit 8 includes a return drive motor 26, a gear head 27, a worm gear 28, a worm wheel 29, and a relay in a substantially box-shaped return drive unit chassis 25. A gear 30, a return drive gear 31, a return drive shaft 32, a sensor disk 33, an arm angle sensor 34, and a home position (HP) sensor 35 are provided. The return drive unit 8 is positioned and fixed on the lower side (one end in the vertical direction) of the gate bar base 6 at a position where the return drive shaft 32 is coaxial with the release shaft 13 of the gate bar base 6.

  The return drive unit chassis 25 includes a chassis lower part 25a and a chassis upper part 25b, and front and rear covers (not shown). The chassis lower part 25a and the chassis upper part 25b are fastened by any means such as screwing or bonding. May be. A worm wheel support shaft 25c and a relay gear support shaft 25d projecting upward are provided on the bottom surface of the chassis lower portion 25a. A shaft hole 25e for attaching a bearing 36 for supporting the return drive shaft 32 is provided on the other end side (left side) in the longitudinal direction on each of the bottom surface of the chassis lower portion 25a and the upper surface of the chassis upper portion 25b. A shaft groove 25f for pivotally supporting the worm gear 28 is provided on a side surface (right surface) on one end side in the longitudinal direction of the chassis upper portion 25b.

  The return drive motor 26 is, for example, a DC motor, and is integrally formed with a gear head 27 having a large number of gear trains therein. A worm gear 28 is fixed to the output shaft of the gear head 27. The worm gear 28 is supported by the shaft groove 25 f of the chassis upper portion 25 b and rotates integrally with the output shaft of the gear head 27.

  The worm wheel 29 has a helical gear portion 29a meshing with the worm gear 28 and a small gear portion 29b formed below the helical gear portion 29a so as to rotate integrally, and is supported by the worm wheel support shaft 25c. The The relay gear 30 includes a large gear portion 30a that meshes with the small gear portion 29b of the worm wheel 29 and a small gear portion 30b that is formed below the large gear portion 30a so as to rotate integrally. It is pivotally supported on the shaft 25d.

  The return drive gear 31 has a gear that meshes with the small gear portion 30 b of the relay gear 30, is fixed to the return drive shaft 32, and rotates integrally with the return drive shaft 32. The return drive shaft 32 is pivotally supported by a bearing 36 attached to the shaft hole 25e. A sensor disk 33 is also fixed above the return drive gear 31 of the return drive shaft 32 so as to rotate integrally with the return drive shaft 32. An HP recess 33a for detecting the home position is formed on the outer periphery of the sensor disk 33.

  The arm angle sensor 34 and the arm HP sensor 35 are fixedly disposed around the sensor disk 33. The arm HP sensor 35 detects a predetermined position (HP recess 33a) of the sensor disk 33, thereby returning the return drive shaft. The home position of the return drive arm 38 attached to 32 is detected, and for the arm angle sensor 34, the return drive arm 38 is determined from the number of transmission / shielding pulses by slits 33 b that are opened at equal angular intervals on the peripheral surface of the sensor disk 33. The rotation angle of is detected. The rotation angle of the return drive shaft 32 and the return drive arm 38 is clockwise or counterclockwise when viewed from the gate bar base 6 side (upper side in the gate closed state or released state and right side in the return intermediate state described later). Indicates the angle.

  According to the internal structure of the return drive unit 8 as described above, when the return drive motor 26 is rotationally driven, the rotational force is decelerated by the gear head 27 and the output shaft is rotated and transmitted to the worm gear 28. This rotational force is reduced to, for example, several tenths by meshing between the worm gear 28 and the helical gear portion 29 a of the worm wheel 29, and the small gear portion 29 b of the worm wheel 29 and the large gear portion 30 a of the relay gear 30. Is further decelerated, and the speed is also reduced by meshing between the small gear portion 30b of the relay gear 30 and the return drive gear 31, and finally the drive of the return drive motor 26 is reduced to one hundredth to return the return drive shaft. 32 is rotated. Accordingly, even with the return drive motor 26 having a relatively small diameter and small power, the return drive shaft 32 can be rotated with a strong torque by being driven to rotate at high speed and decelerating in multiple stages. Will be slow.

  Further, the upper portion of the return drive shaft 32 penetrates the shaft hole 25e of the chassis upper portion 25b and protrudes above the chassis upper portion 25b. At the upper end of the return drive shaft 32, a round convex portion 37 that is loosely fitted to the round concave portion 14 of the release shaft 13 of the gate bar base portion 6 is formed in a stepped shape. That is, the round recess 14 of the release shaft 13 and the round projection 37 of the return drive shaft 32 form a positioning mechanism for the gate bar base 6 and the return drive 8.

  Further, a return drive arm 38 is fixed to the upper part of the return drive shaft 32 below the round convex portion 37 so as to rotate integrally with the return drive shaft 32. The return drive arm 38 is formed in a flat plate shape extending perpendicularly to the return drive shaft 32 and extends from the gate bar base 6 side to the gate bar 7.

  The length in the longitudinal direction of the return drive arm 38 is sufficiently longer than the length from the release shaft 13 coaxial with the return drive shaft 32 to the return driven pin 23 of the return driven portion 21, that is, the return drive arm 38. The return follower pin 23 of the return follower 21 is positioned on the turning track. The vertical height position of the return drive arm 38 is within the range of the protruding length of the return follower pin 23. A first pressing portion 38 a and a second pressing portion 38 b are provided at both ends in the short direction of the return drive arm 38. The first pressing portion 38a is an end portion on the clockwise direction side when the return driving portion 8 is viewed from above, and the second pressing portion 38b is an end portion on the counterclockwise direction side. Accordingly, when the return drive arm 38 rotates clockwise, the first pressing portion 38a contacts the return driven pin 23, and when the return drive arm 38 rotates counterclockwise, the second press portion 38b returns. It contacts the driven pin 23. In this way, the return drive arm 38 rotates to abut against the return driven pin 23, and by pressing the return driven pin 23 (return driven portion 21), the return driven pin 23 (return driven portion 21). The gate bar holding part 18 (gate bar 7) provided with a) can be rotated.

  The circumferential position of the return drive arm 38 is maintained at a home position that does not interfere with the return driven pin 23 when the gate bar 7 is in a fixed state, as shown in FIGS. The home position of the return drive arm 38 is set on the opposite side to the release direction of the gate bar 7 with respect to the return follower pin 23. As a result, when the gate bar 7 is released, the return driven pin 23 that rotates together with the gate bar 7 moves away from the return drive arm 38 at the home position and thus does not interfere.

  The control unit 10 includes, for example, a CPU (Central Processing Unit), a memory, and the like, and the memory stores a control program for controlling the road opening / closing operation and the return operation of the gate device 1. The electrical configuration of the gate device 1 including the control unit 10 will be described with reference to FIG. For example, as shown in FIG. 10, the gate device 1 includes a gate drive motor 41, a gate angle sensor 42 and a gate HP sensor 43 in the gate drive unit 40, a proximity sensor 16 and a release detection switch 44 in the gate bar base 6, The return drive unit 26 includes a return drive motor 26, an arm angle sensor 34, an arm HP sensor 35, a communication unit 45, and an input / output unit 46. These electrical devices are connected to the control unit 10, and the control unit 10 controls each electrical device based on the control program described above.

  The gate drive unit 40 includes, for example, a gate drive motor 41 that drives the horizontal rotation shaft 9, a gate angle sensor 42 that detects the rotation angle of the horizontal rotation shaft 9, and a gate bar attached to the horizontal rotation shaft 9. A gate home position (HP) sensor 43 that detects the home position of the base 6 and the gate bar 7 is provided. The gate drive motor 41 is, for example, a DC motor, and the gate angle sensor 42 is, for example, an encoder integrated with the gate drive motor 41, and can accurately detect the rotation angle of the gate drive motor 41. It is. Therefore, based on the detection result of the gate drive motor 41, the control unit 10 can stop the gate drive motor 41 at a desired rotation angle and finely control the angle of the horizontal rotation shaft 9. The home position of the gate bar base 6 (gate bar 7) is a position where the longitudinal direction of the gate bar base 6 (gate bar 7) is horizontal (left-right direction).

  The release detection switch 44 of the gate bar base 6 detects whether or not the gate bar 7 has been released from the gate bar base 6.

  The communication unit 45 enables the gate device 1 (the control unit 10) to communicate with an external device via a network. For example, a system including the gate device 1 has a roadway control panel (separate from the gate device 1). In the case of controlling that the roadway 2 cannot be shut off or the vehicle is approaching by a not-shown), the roadway control panel is communicably connected via a network. For example, when the gate device 1 is installed at an ETC gate, the communication unit 45 receives a road opening / closing operation command based on vehicle data sent from the ETC antenna to the road control panel from the road control panel. .

  The input / output unit 46 transmits and receives electrical signals between the gate device 1 (control unit 10) and an external device. For example, the input / output unit 46 is provided in the vicinity of the road 2 and detects a vehicle passing through the road 2. Connected to a vehicle detector (not shown).

  Next, the release operation of the gate bar 7 in the gate device 1 will be described.

  In the gate device 1, as shown in FIGS. 1, 2, 5, and the like, the gate bar base portion 6 and the gate bar 7 are normally in a fixed state, and the locking mechanism includes the locking movable portion 12 and the latch portion 20. 11 is locked. In this fixed state, the return drive arm 38 of the return drive unit 8 is maintained at the home position, and the first pressing portion 38 a of the return drive arm 38 does not contact the return driven pin 23 of the return driven unit 21. It is in a position with a slight gap.

  In the gate device 1, this fixed state is maintained in the same manner whether the gate bar 7 shown in FIG. 1 is closed or the gate bar 7 shown in FIG. 2 is opened. When the gate device 1 blocks the roadway 2, the horizontal rotation shaft 9 rotates the gate bar base 6 and the gate bar 7 to the recumbent position, thereby closing the gate bar 7 (see FIG. 1 and the like).

  Usually, the vehicle does not collide with the closed gate bar 7 blocking the roadway 2. However, for example, when a vehicle that has forgotten to insert an ETC card into the ETC on-board unit passes through the gate of the ETC, or a vehicle that enters from the parking lot exit proceeds without waiting for the gate bar 7 to open intentionally or accidentally. In some cases, the vehicle may collide with the gate bar 7 blocking the roadway 2.

  For example, when the vehicle collides with the other end side of the gate bar 7 (the other end side of the gate bar main body 19), the locking mechanism 11 is unlocked by an external force applied to the other end side of the gate bar 7 due to the collision, and the gate bar base portion One end side of the gate bar 7 (one end side of the gate bar holding portion 18) is removed from one end side of the gate 6, and the gate bar 7 rotates around the release shaft 13 in the release direction (clockwise as viewed from above) (release). Operation).

  Thus, the gate bar 7 rotated by the release operation stops at various positions within the above-described range of the release limit angle. For example, the gate bar 7 may rotate about 90 degrees around the release shaft 13 and stop in the longitudinal direction substantially parallel to the roadway 2. Alternatively, when the impact force (external force) applied to the other end side is small, the gate bar 7 has a rotation angle smaller than 90 degrees and may stop while protruding toward the roadway 2 side. Alternatively, when the gate bar 7 collides vigorously and the impact force (external force) applied to the other end side is large, when the gate bar 7 rotates 90 degrees, the contact portion 22 of the return driven portion 21 becomes the gate bar base portion 6. The stopper portion 15 may be abutted vigorously and rotated in the reverse direction (counterclockwise when viewed from above) by the reaction, so that it may protrude to the side of the roadway 2 and stop.

  Next, the return operation of the gate bar 7 released as described above in the gate device 1 will be described along the flowchart of FIG. 17 with reference to FIGS. Here, the “returning operation” is an operation of returning the gate bar 7 that has been released to a state before the releasing operation, that is, a fixed state in which the road opening and closing operation is possible. 11 to 16, the HP concave portion 33a of the sensor disk 33 is not a concave shape but a round shape for simplicity, and the slit 33b is not shown.

  In the initial state, the gate device 1 is in a state in which the gate bar 7 is fixed to the gate bar base 6 as shown in FIG. 11. In order to monitor the fixed state of the gate bar base 6 and the gate bar 7 as described above, the release detection switch 44 always detects whether or not the gate bar 7 has been released from the gate bar base 6 (step S1). As described above, when the gate bar 7 is released from the gate bar base 6 (see FIG. 12 and the like), the release detection switch 44 is turned ON (step S1: Yes).

  When the release detection switch 44 is turned ON, the control unit 10 drives the return drive motor 26 of the return drive unit 8 in reverse (step S2). Then, the rotational force of the return drive motor 26 is transmitted to the return drive shaft 32 via the gears 28, 29, 30 and 31 of the return drive unit 8, and the return drive shaft 32 is rotated to return the return drive arm 38. It is rotated in a direction following the return driven pin 23 of the driven portion 21 (release direction, clockwise as viewed from above) (see FIG. 13 and the like). At this time, the first pressing portion 38a of the return drive arm 38 presses the return driven pin 23 of the return driven portion 21 when the gate bar 7 projects to the roadway 2 side, and the gate bar 7 (gate bar holding portion). 18) is rotated with respect to the gate bar base 6 in the release direction (clockwise as viewed from above).

  The rotation angle of the return drive arm 38 is sequentially detected by the arm angle sensor 34, and the detection result of the arm angle sensor 34 is input to the control unit 10, and the control unit 10 determines the rotation angle of the return drive arm 38. Monitoring is performed (step S3). When the arm angle sensor 34 detects a predetermined angle α1 preset in the control unit 10 (step S3: YES), the control unit 10 stops driving the return drive motor 26 and rotates the return drive arm 38. The movement is stopped (step S4). The predetermined angle α1 is, for example, an angle (90 degrees plus alpha) obtained by adding a release limit angle (for example, 90 degrees) of the gate bar 7 to a gap angle between the return drive arm 38 and the return drive pin 32 in the fixed state. .

  In this way, the gate bar 7 (gate bar holding portion 18) is opened by a release limit angle (90 degrees) with respect to the gate bar base portion 6, and the stopped return drive arm 38 supports the return drive pin 23. This state is maintained. Further, when the gate bar 7 reaches the release limit angle, the contact portion 22 of the return driven portion 21 contacts the stopper portion 15 of the gate bar base portion 6. Such contact between the contact portion 22 and the stopper portion 15 is detected by the proximity sensor 16 of the gate bar base portion 6.

  When the proximity sensor 16 detects the contact between the contact portion 22 and the stopper portion 15, the control portion 10 drives the gate drive motor 41 to rotate forward so that the horizontal rotation shaft 9 is moved together with the gate bar base portion 6 and the gate bar 7. Rotate at a low speed clockwise as viewed from the front (step S5). The detection by the proximity sensor 16 may be omitted, and the release completion state may be determined by detecting the angle α1 of the arm angle sensor 34 described above. Thereby, the gate bar 7 is gradually raised toward the upper side of the main body housing 2 while being held in the release completion state with respect to the gate bar base portion 6. In this way, the gate bar 7 shifts to the return intermediate state arranged above the main body housing 2 while being in the release completed state.

  The rotation angle of the horizontal rotation shaft 9 is detected by the gate angle sensor 42, and the detection result of the gate angle sensor 42 is input to the control unit 10, and the control unit 10 rotates the rotation angle of the horizontal rotation shaft 9. Is monitored (step S6). Then, when the gate angle sensor 42 detects a predetermined angle β1 set in advance in the control unit 10, specifically, the same angle β1 (for example, 90 degrees) as the open state of the gate bar 7 (step S6: YES). The control unit 10 stops driving the gate drive motor 41 and stops the rotation of the horizontal rotation shaft 9 (step S7). This state is a return intermediate state (see FIG. 4). Thus, when the gate bar base 6 and the gate bar 7 are rotated around the horizontal rotation shaft 9, the gate bar 7 is always in a release completed state, so that the other end in the longitudinal direction of the gate bar main body 19 projects toward the roadway 2 side. Therefore, the transition to the return intermediate state of the gate bar 7 can be performed stably.

  13 and 14 show the gate bar base 6 and the gate bar 7 in a released state, and the longitudinal direction of the figure corresponds to the left-right direction of the gate device 1 before the horizontal rotation shaft 9 is rotated. However, after the horizontal rotation shaft 9 is rotated, the longitudinal direction of the drawing corresponds to the vertical direction of the gate device 1 and corresponds to the drawing viewed from the right side.

  When the gate bar 7 shifts to the return intermediate state, the control unit 10 drives the return drive motor 26 of the return drive unit 8 to rotate forward (step S8), and rotates the return drive shaft 32 to move the return drive arm 38. It is rotated in the direction opposite to the release direction (counterclockwise when viewed from the right) (see FIG. 14). Accordingly, the second pressing portion 38b of the return drive arm 38 presses the return driven pin 23 against the gate bar 7 in the released state, and the gate bar 7 (gate bar holding portion 18) is released in the release direction with respect to the gate bar base portion 6. Is rotated in the opposite direction (counterclockwise when viewed from the right) (see FIG. 15). The pressing force in the direction opposite to the release direction acts on the locking mechanism 11 such as the locking movable portion 12 and the latch portion 20 provided on one end side of the gate bar base portion 6 and one end side of the gate bar 7, The gate bar base 6 and the gate bar 7 are securely locked by the locking mechanism 11. Thereby, the gate bar 7 will be in a fixed state (non-release state) (refer FIG. 16).

  The rotation angle of the return drive arm 38 is sequentially detected by the arm angle sensor 34 as described above, and the control unit 10 monitors the rotation angle of the return drive arm 38 (step S9). When the arm angle sensor 34 detects a predetermined angle α2 preset in the control unit 10 (step S9: YES), the control unit 10 stops driving the return drive motor 26 and rotates the return drive arm 38. Stop moving. The predetermined angle α2 is, for example, a counterclockwise rotation angle of the return driving arm 38, and the second pressing portion 38b contacts the return driven pin 23 from the state where the first pressing portion 38a contacts the return driven pin 23. This is an angle obtained by adding the return operation angle of the gate bar 7 (equal to the release limit angle, for example, 90 degrees) to the angle until the contact state (360 degrees or less, see FIG. 14).

  Thus, the gate bar 7 (gate bar holding part 18) and the gate bar base part 6 which are in a fixed state are in a state of being arranged in the standing position (see FIG. 2). In this state, the release detection switch 44 is turned off (step S10: Yes).

  When the release detection switch 44 is turned off, the control unit 10 rotates the return drive shaft 32 by rotating the return drive shaft 32 by rotating the return drive motor 26 in the reverse direction (step S11). Turn clockwise (clockwise when viewed from the right).

  At this time, the return drive arm 38 is sequentially detected by the arm HP sensor 35, and the detection result of the arm HP sensor 35 is input to the control unit 10, and the control unit 10 determines whether the return drive arm 38 has returned to the home position. Monitoring is performed (step S12).

  The arm HP sensor 35 is turned on when detecting the HP recess 33a of the sensor disk indicating that the return drive arm 38 has returned to the home position (step S12: YES), and the control unit 10 turns the arm HP sensor 35 on. Then, the drive of the return drive motor 26 is stopped and the rotation of the return drive arm 38 is stopped (step S13).

  By the way, the control unit 10 determines whether or not the roadway 2 can be blocked by the gate bar 7 (step S14). For example, the control unit 10 receives a signal indicating that the vehicle cannot be blocked from the road control panel as described above or the vehicle is approaching via the communication unit 45, or the vehicle is detected from the vehicle detector as described above. When a vehicle detection signal indicating that the vehicle is passing is received via the input / output unit 46, it is determined that the roadway 2 cannot be blocked. If such a signal is not received, the vehicle can be blocked. Judge.

  When the control unit 10 stops the return drive arm 38 at the home position as described above and determines that the roadway 2 can be blocked (step S14: YES), the control unit 10 drives the gate drive motor 41 in the reverse direction (step S15). ) The horizontal rotation shaft 9 is rotated together with the gate bar base 6 and the gate bar 7 counterclockwise as viewed from the front. Thereby, the gate bar 7 gradually descends toward the left of the main body housing 2 from the state in which the gate bar 7 is disposed in the standing position, and the gate bar base portion 6 and the gate bar 7 move to the recumbent position and are closed ( (See FIG. 1).

  When the gate bar base 6 and the gate bar 7 reach the recumbent position, the gate HP sensor 43 is turned on (step S16: YES). When the gate HP sensor 43 is turned on, the controller 10 stops driving the gate drive motor 41 and stops the rotation of the horizontal rotation shaft 9 (step S17). Thereby, the return operation is completed.

  In the first embodiment described above, the gate bar 7 is rotated with respect to the gate bar base 6, and the return drive unit 8 having the return drive arm 38 is provided on the gate bar base 6 side, and the return driven pin is provided on the gate bar 7 side. Although the structure provided with the return driven part 21 which has 23 was demonstrated, another structure may be sufficient.

  In the first embodiment described above, the locking mechanism 11 including the locking movable portion 12 and the latch portion 20 has been described as the locking mechanism 11 that locks the gate bar base 6 and the gate bar 7. The locking mechanism 11 is not limited to such a configuration, and may have another configuration as long as the gate bar base 6 and the gate bar 7 can be locked with a predetermined holding force.

  Further, in the first embodiment described above, as a positioning mechanism for the gate bar base 6 and the return drive unit 8, the return drive shaft 32 of the return drive unit 8 with respect to the round recess 14 of the release shaft 13 of the gate bar base 6 is used. Although the structure which the round convex part 37 fits loosely was demonstrated, it is not limited to this structure. The return drive unit 8 may not include the above positioning mechanism as long as the gate bar 7 can be rotated with respect to the gate bar base 6 by the return drive arm 38.

  According to the first embodiment, as described above, the gate device 1 that restricts the passage of the vehicle (moving body) on the roadway 2 includes the main body housing 4 (main body portion), the horizontal rotation shaft 9, and the like. The gate bar base 6, the gate bar 7, and the return drive unit 8 are provided. The horizontal rotation shaft 9 is attached to the main body housing 4 so as to protrude on the opposite side to the vehicle traveling direction (moving body traveling direction) parallel to the roadway 2. The gate bar base portion 6 is formed in an elongated shape, and is attached to the horizontal rotation shaft 9 so that the longitudinal direction thereof is orthogonal to the horizontal rotation shaft 9. When opening the door, it is rotated by the horizontal rotation shaft 9 so as to stand up. The gate bar 7 is formed in an elongated shape, and is attached to the gate bar base portion 6 so that one end side in the longitudinal direction is pivotally supported by the gate bar base portion 6 and is rotatable in the release direction toward the vehicle traveling direction and the reverse direction thereof. The gate bar base 6 is detachably provided on the gate bar base 6 so as to be fixed and integrated with the gate bar base 6 so as to be released from being fixed with the gate bar base 6 by receiving a predetermined external force. The return drive unit 8 is positioned and fixed (attached) to the gate bar base 6 side, and includes a return drive arm 38 that rotates the gate bar 7 in the release direction and in the opposite direction. Then, when the gate bar 7 is in the release state, the return operation of the gate bar 7 is started. In the return operation, the release drive arm 38 rotates the gate bar 7 in the release direction and retreats from the roadway 2. The horizontal rotation shaft 9 is rotated in the direction in which the gate bar base 6 is raised while the gate bar 7 is held in the release completed state by the return drive arm 38, and the return drive arm 38 in the state where the gate bar base 6 is raised. Performs a fixed state return operation in which the gate bar 7 is rotated in the direction opposite to the release direction to shift to the fixed state.

  As described above, in the gate device 1 according to the first embodiment, the return drive arm 38 on the gate bar base 6 side rotates following the released gate bar 7 to rotate the gate bar 7 (the gate bar holding portion 18 and the gate bar main body). 19), the gate bar 7 can be returned to the fixed state after the ascending operation with the release completed state held. For this reason, it is possible to prevent the gate bar 7 from projecting toward the roadway 2 during the return operation of the gate bar 7. Furthermore, since the return drive arm 38 is connected to the gate bar base 6, it is not necessary to increase the size of the main body housing 4, and the gate device 1 can be provided in a compact and inexpensive manner.

  Further, in the gate device 1 according to the first embodiment, the return drive arm 38 connected to the gate bar base 6 is used as a mechanism for moving the gate bar 7 to the gate bar base 6 to the release completion state. It is controlled to be driven later. Therefore, since a member such as a spring that constantly biases the gate bar 7 in the release direction is not used, the holding force of the locking mechanism 11 that locks the gate bar 7 to the gate bar base 6 before the release is stably maintained. 7 can be stably performed by a compact mechanism.

  Further, in the gate device 1 of the present embodiment, the gate bar 7 includes the return driven portion 21 in the vicinity of the release shaft 13 that is the center of rotation with respect to the gate bar base portion 6, and the return drive portion 8 is coaxial with the release shaft 13. The return drive shaft 32 has a return drive shaft 32 that extends from the return drive shaft 32 to the return driven portion 21 (return driven pin 23) and is rotatable about the return drive shaft 32. Is provided. As a result, a mechanism for rotating the gate bar 7 with respect to the gate bar base 6 can be realized by a simple mechanism for causing the return drive arm 38 to follow the return follower 21.

  Furthermore, in the gate device 1 of the present embodiment, in the fixed state return operation, after the horizontal rotation shaft 9 stands and stops the gate bar base portion 6, the release direction of the gate bar 7 by the return drive arm 38 is reversed. Is rotating. Thereby, it is possible to realize a situation in which the gate bar 7 does not reliably protrude toward the roadway 2 side.

  Next, a gate device 1 according to a second embodiment of the present invention will be described. The configuration of each part of the gate device 1 according to the second embodiment and the release operation of the gate bar 7 are the same as those in the first embodiment described above, and therefore the description thereof is omitted. The gate device 1 of the second embodiment is partially different from the first embodiment in the return operation of the gate bar 7. Hereinafter, the return operation of the gate bar 7 in the gate device 1 of the second embodiment will be described along the flowchart of FIG. 19 with reference to FIG.

  In the second embodiment, the operation from the detection of the released gate bar 7 (step S21) until the gate bar 7 is held in the release completion state (step S24) is the same as that of the first embodiment (step Since they are the same as S1 to S4), their description is omitted.

  At this time, as shown in FIG. 18 (a), the gate bar base portion 6 is in the same state as before the gate bar 7 is released, and is laid down by the gate drive motor 41 and the horizontal rotation shaft 9, so that the gate bar The rotation angle δ of the base 6 is set to 0. Further, when the gate bar 7 is in the release completion state, the rotation angle of the gate bar 7 from the gate bar base portion 6 is the release limit angle (90 degrees), but before the return operation, the return operation angle γ = 0. And

  Then, in the release completion state of the gate bar 7, the proximity sensor 16 of the gate bar base portion 6 detects the contact between the contact portion 22 of the return driven portion 21 and the stopper portion 15 of the gate bar base portion 6. In response to this, the control unit 10 drives the gate drive motor 41 in the normal direction while the gate bar 7 is held in the release completed state, and sees the horizontal rotation shaft 9 together with the gate bar base 6 and the gate bar 7 from the front. Then, the gate bar 7 is gradually raised as shown in FIG. 18B by rotating it clockwise at a low speed (step S25).

  The rotation angle of the horizontal rotation shaft 9 is detected by the gate angle sensor 42, and the control unit 10 monitors the rotation angle δ of the horizontal rotation shaft 9 by the gate angle sensor 42 (step S26). ). When the gate angle sensor 42 detects a predetermined start angle δ1 set in advance in the control unit 10 (step S26: YES, see FIG. 18B), the control unit 10 performs normal rotation of the return drive motor 26. Driving is started (step S27).

  The start angle δ1 is determined based on the weights of the gate bar holding part 18 and the gate bar main body 19 constituting the gate bar 7 and the positional relationship of the gate bar holding part 18 and the gate bar main body 19 with respect to the release shaft 13. As shown in FIG. 18B, in the gate bar 7, the weight W of the gate bar main body 19 (the amount obtained by subtracting the weight of the gate bar holding portion 18) W is vertical at the longitudinal center position of the long gate bar main body 19. It will act downward. The start angle δ1 is an angle at which the return operation angle γ = 0 can be stabilized by the weight of the gate bar 7 even if the holding of the first pressing portion 38a of the return drive arm 38 is released, and specifically, about 30 degrees. Is set. If the holding of the first pressing portion 38a is released when the rotation angle δ = 0 of the horizontal rotation shaft 9 is released, the gate bar 7 will be wind pressure even if W of the gate bar main body 19 acts vertically downward. It may overhang to the road 2 side under the influence of the above. Therefore, it is desirable to determine the start angle δ1 in consideration of not only the dead weight of the gate bar 7 but also the influence of the surrounding environment such as wind pressure.

  Further, the control unit 10 monitors the rotation angle of the return drive arm 38 by the arm angle sensor 34 when the return drive motor 26 is driven forward (step S28). At this time, the return drive motor 26 is operated at high speed until the rotation angle of the return drive arm 38 reaches a predetermined angle α3 (see FIG. 14) and the second pressing portion 38b contacts the return driven pin 23 of the return driven portion 21. In this case, since the load is not applied to the return drive arm 38, the return drive motor 26 can rotate at high speed with no load.

  When the arm angle sensor 34 detects the predetermined angle α3 (step S28: YES), the control unit 10 starts synchronous control of the return drive motor 26 and the gate drive motor 41 (step S29). This synchronization control is performed on the return drive motor 26 side when the second pressing portion 38b of the return drive arm 38 presses the return follower pin 23 to rotate the gate bar 7 in the direction opposite to the release direction. In this control, the gate bar base 6 is raised by the gate drive motor 41 while gradually driving the return drive arm 38 so that the other end in the longitudinal direction does not protrude from the island 3 to the road side 2 (FIG. 18). (See (c)). By starting the drive of the return drive arm 38 in a state where the gate bar base portion 6 is not completely raised, the load on the return drive arm 38 is reduced by the dead weight W of the gate bar 7. It can be suppressed as much as possible.

  Also in this synchronous control, when the return drive arm 38 rotates to the return operation angle (γ = 90 degrees) of the gate bar 7 (see FIG. 18D), the pressing force in the direction opposite to the release direction by the return drive arm 38 is obtained. However, it acts on the locking mechanism 11 such as the locking movable portion 12 and the latch portion 20 in the gate bar base 6 and the gate bar 7. Then, the gate bar base portion 6 and the gate bar 7 are securely locked by the locking mechanism 11, and the gate bar 7 is in a fixed state (non-release state). At this time, similarly to the first embodiment, the arm angle sensor 34 detects a predetermined angle α2 preset in the control unit 10 (step S30: YES). Further, since the gate bar 7 is in a fixed state, the release detection switch 44 is turned off (step S31: Yes). When the release detection switch 44 is turned off, the control unit 10 stops driving the return drive motor 26 of the return drive unit 8 (step S32).

  In this example, even when the gate bar 7 returns to the fixed state, the rotation angle δ of the gate bar base 6 rotated by the gate drive motor 41 does not reach 90 degrees (see FIG. 18D). ), The gate drive motor 41 continues to rotate the horizontal rotation shaft 9 and the gate bar base 6. Then, when the gate angle sensor 42 detects a predetermined angle β1 (for example, 90 degrees) preset in the control unit 10 as the rotation angle δ of the gate bar base 6 in the same manner as in the first embodiment (step 90). (S33: YES), the controller 10 stops driving the gate drive motor 41 and stops the rotation of the horizontal rotation shaft 9 (gate bar base 6) (step S34).

  Thereafter, the return drive arm 38 is returned to the home position, and the operation until the return operation is completed by closing the gate bar 7 (steps S35 to S41) is the same as each operation (steps S11 to S17) of the first embodiment. Since they are the same, their description is omitted.

  According to the second embodiment, as described above, the gate device 1 has the same configuration as that of the first embodiment, and the weight of the gate bar 7 is larger than that of the roadway 2 in the fixed state return operation. After the gate bar 7 is rotated to an inclination angle that sufficiently acts in the release direction, the return drive arm 38 releases the holding completion state of the gate bar 7, and the release direction of the gate bar 7 by the return drive arm 38. The rotation in the reverse direction is synchronized with the rotation in the direction in which the gate bar base portion 6 is raised by the horizontal rotation shaft 9 so as to maintain (control) the gate bar 7 so as not to protrude onto the roadway.

  As described above, in the gate device 1 according to the second embodiment, the weight load of the gate bar 7 related to the return drive arm 38 is reduced by starting the return operation of the gate bar 7 during the turning process of the gate bar base 6. Thus, the return drive motor 26 of the return drive unit 8 and the mechanical parts such as gears can be reduced in size, and the return drive unit 8 that is compact and inexpensive can be configured. In addition, the time required for the return operation of the gate bar 7 can be shortened.

  Further, according to the second embodiment, as described above, the gate device 1 includes the arm angle sensor 34 that detects the rotation angle of the return drive arm 38 of the return drive unit 8 and the rotation of the horizontal rotation shaft 9. And a gate angle sensor 42 for detecting a moving angle, and at least in a fixed state return operation, based on the rotation angle detected by the arm angle sensor 34 and the gate angle sensor 42, the return drive arm 38 and the horizontal rotation shaft 9 is controlled synchronously. Here, the synchronous control does not mean that the rotation speed of the rotation speed return drive arm 38 of the horizontal rotation shaft 9 is the same, but the phase angle of the return drive arm 38 according to the phase angle of the horizontal rotation shaft 9. And by setting the gate bar base portion 18 to the roadway side, the other end in the longitudinal direction of the gate bar main body 19 is in a state of both phase angles set in advance so that it is positioned vertically above the curb portion of the island 3 as much as possible. It means to control to follow.

  In the gate device 1 according to the embodiment of the present invention, the rotation angle detected by the arm angle sensor 34 and the gate angle sensor 42 is used in the synchronous control of the return drive arm 38 and the horizontal rotation shaft 9. Synchronous control can be easily performed so that the rotation trajectory of the other end of the direction does not protrude toward the roadway 2 side. In addition, by using these rotation angles, it is possible to accurately control following the fluctuation of the operation load due to external factors such as wind pressure and rainfall. In this synchronous control, it is preferable that the gate drive motor 41 is rotated at a constant low speed, and the return drive motor 26 is controlled so as to change the speed appropriately. In step S26, the gate drive motor 41 may be temporarily stopped until the return drive arm 38 reaches the preparation position for the return operation.

  In each of the embodiments described above, a DC motor is used as the return drive motor 26 and the gate drive motor 41, and the rotation angles of the return drive shaft 32 and the horizontal rotation shaft 9, that is, the positions of the return drive arm 38 and the gate bar 7 are determined. In order to detect, although the structure which performs position control and synchronous control using the arm angle sensor 34 and HP sensor 35, and the gate angle sensor 42 which consists of an encoder was demonstrated, this invention is not limited to this structure. For example, a stepping motor may be used as the return drive motor 26 or the gate drive motor 41, and the position control and the synchronization control of the return drive arm 26 or the gate bar 7 may be performed by performing phase control of the stepping motor. .

  As described above, with the gate device 1 according to the present invention, the mechanism space for returning the released gate bar 7 can be reduced, and the position of the gate bar 7 during the returning operation can be quickly stabilized. Furthermore, it is possible to prevent the gate bar 7 during the returning operation from projecting to the roadway 2 side, and it is possible to provide a compact and low cost.

  In addition, the present invention can be appropriately changed without departing from the spirit or idea of the invention which can be read from the claims and the entire specification, and a gate device accompanying such a change is also included in the technical idea of the present invention. included.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used for a gate device installed at a toll gate on an expressway or a toll road, or a gate device at an entrance / exit of a toll parking lot.

1 Gate device 2 Roadway 4 Body housing (main body)
6 Gate bar base portion 7 Gate bar 8 Return drive portion 9 Horizontal rotation shaft 10 Control portion 11 Locking mechanism 13 Release shaft 18 Gate bar holding portion 19 Gate bar main body 21 Return drive portion 23 Return drive pin 26 Return drive motor 32 Return drive shaft 34 Arm angle Sensor 38 Return drive arm 38a 1st press part 38b 2nd press part 40 Gate drive part 41 Gate drive motor 42 Gate angle sensor

Claims (5)

A gate device that restricts the passage of a moving object on a roadway,
The main body,
A horizontal rotation shaft attached to the main body so as to protrude in a direction opposite to the moving body traveling direction parallel to the roadway;
When it is formed in a long shape and is attached to the horizontal rotation shaft so that its longitudinal direction is orthogonal to the horizontal rotation shaft. A gate bar base that is pivoted by the horizontal pivot shaft to stand up;
The gate bar is attached to the gate bar base so that one end side in the longitudinal direction is pivotally supported by the gate bar base and is rotatable in a release direction toward the moving body traveling direction and the opposite direction. A gate bar that is detachably provided on the gate bar base so as to be released and released from being integrated and fixed to the gate bar base by receiving a predetermined external force while being fixed to the base integrally.
A return drive unit mounted on the gate bar base side,
The return drive unit includes a return drive arm that rotates the gate bar in the release direction and in the opposite direction.
Release operation of the gate bar is started when the gate bar is in the release state, and in the return operation, the release drive arm rotates the gate bar in the release direction and retracts from the roadway The horizontal rotation shaft is rotated in the direction in which the gate bar base is raised while the gate bar is held in the release completed state by the return drive arm, and the return drive is performed in the state where the gate bar base is raised. The gate device characterized in that an arm performs a fixed state return operation in which the gate bar is rotated in a direction opposite to the release direction to shift to the fixed state. The gate bar includes a return follower in the vicinity of a release shaft that is a center of rotation with respect to the gate bar base,
The return drive unit has a return drive shaft coaxial with the release shaft,
2. The gate according to claim 1, wherein the return drive arm extends from the return drive shaft to the return follower and is pivotable about the return drive shaft. apparatus.   The fixed state return operation is characterized in that after the horizontal rotation shaft stands and stops the gate bar base, the return drive arm rotates the gate bar in a direction opposite to the release direction. The gate device according to claim 1 or 2.   In the fixed state return operation, after the gate bar is rotated to an inclination angle such that the weight of the gate bar acts more in the release direction than the road side, the return drive arm maintains the release completion state of the gate bar. The gate bar is rotated by synchronizing the rotation of the gate bar in the direction opposite to the release direction by the return drive arm with the rotation of the horizontal rotation shaft in the direction of raising the gate bar base. The gate device according to claim 1, wherein the gate device is controlled so as not to protrude onto the roadway. An arm angle sensor for detecting a rotation angle of the return drive arm of the return drive unit;
A gate angle sensor for detecting a rotation angle of the horizontal rotation shaft,
At least in the fixed state return operation, the return drive arm and the horizontal rotation shaft are synchronously controlled based on a rotation angle detected by the arm angle sensor and the gate angle sensor. 5. The gate device according to 4.

Images