JP5610994B2 - Vehicle traffic barrier - Google Patents

Description

The present invention relates to a vehicle traffic barrier installed at a toll gate such as an expressway and capable of blocking or permitting vehicle traffic.

  In recent years, ETC (Electronic Toll Collection System) has been introduced as a system for automating toll collection in toll roads such as expressways and parking lots. In this ETC, when the vehicle detector detects the entry of the vehicle to the toll gate, the lane server issues a communication command to the roadside antenna, and based on this, the roadside antenna communicates with the vehicle-mounted device mounted on the vehicle. To start. Next, the lane server determines whether the vehicle is a normal vehicle or an abnormal vehicle based on information obtained from the vehicle-mounted device by the roadside antenna. When it is determined that the vehicle is a normal vehicle, the blocking rod of the vehicle passage breaker is opened, and when it is determined that the vehicle is abnormal, the blocking rod is maintained in a closed state, thereby permitting or blocking the passage of the vehicle.

  In this ETC, there is an accident in which when the vehicle forcibly passes the vehicle passage breaker even though the blocking rod is closed, the blocking rod and the vehicle are damaged by the collision of the vehicle with the blocking rod. Arise. Therefore, in order to deal with such a problem, there has been proposed a vehicle traffic breaker in which the blocking bar performs a release operation so as to release the impact received by the blocking bar during a vehicle collision (for example, Patent Document 1, Patent Document 1). 2).

  While the vehicle traffic breaker described in these Patent Documents 1 and 2 is normally used without the vehicle colliding with the blocking bar, the blocking bar rotates in the vertical plane and is in a state of lying down horizontally. While blocking the passage of the vehicle, an opening / closing operation is performed to permit the vehicle to enter while standing vertically. When the vehicle collides with the blocking rod, the blocking rod is bent along the horizontal plane in the vehicle traveling direction according to the impact, and is in a released state.

Japanese Patent No. 3594957 JP 2003-336232 A

  However, in the vehicle traffic breaker disclosed in Patent Documents 1 and 2, there is no mechanism for returning the bent blocking bar after the release operation to the state before the release operation. It was necessary to work to manually return the blocking rod to the non-released state. Therefore, there is a case where it takes a long time to return the blocking rod after the release operation, and there is a problem that a traffic jam of the vehicle occurs during that time.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vehicle traffic breaker capable of quickly and surely returning a blocking rod after a release operation.

In order to achieve the above object, the present invention employs the following means.
That is, a blocking bar that is rotated between a blocking position that blocks the passage of the vehicle and a permission position that allows the vehicle to move and opens and closes, and the blocking bar rotates in a release direction that releases the impact of the vehicle A release shaft that can be supported, a return drive unit that rotates the blocking bar in a released state in a return direction that is opposite to the release direction, and the blocking bar that rotates in the return direction is in a non-released state And an auxiliary return drive unit that applies a torque toward the return direction to the blocking rod when reaching a predetermined position before reaching.

  According to the vehicle traffic breaker having such a feature, when the blocking bar rotates in the release direction due to the collision of the vehicle with the blocking bar, the blocking bar is moved in the returning direction by driving the return driving unit. It can be rotated. Further, when the blocking rod that rotates in the return direction by the return drive unit reaches a predetermined position before the non-release state, torque in the return direction by the auxiliary return drive unit is applied to the blocking rod.

  In addition, the vehicle traffic breaker according to the present invention further includes a first detection unit that detects the arrival of the blocking bar to the predetermined position, and the auxiliary return driving unit is configured to detect the blocking bar by the first detection unit. It is preferable to apply the torque to the blocking rod based on the detection.

  Thus, when the blocking bar rotates in the return direction and reaches a predetermined position before the non-released state, torque in the return direction by the auxiliary return drive unit can be quickly applied to the blocking bar. it can. Therefore, the blocking bar can be returned to the non-released state more quickly and reliably.

  Furthermore, the vehicle traffic breaker according to the present invention further includes a second detection unit that detects the arrival of the blocking rod in the non-release state, and the auxiliary return drive unit is based on the detection of the second detection unit. Thus, the application of torque to the blocking rod is released.

  As a result, when the blocking bar is turned into the non-released state as a result of rotating in the return direction, the application of torque in the return direction to the blocking bar by the auxiliary return drive unit is quickly released. Therefore, for example, even when the vehicle collides with the blocking rod immediately after the blocking rod returns to the non-released state, it is possible to smoothly release the collision caused by the vehicle without hindering the release operation of the blocking rod. It becomes possible.

  Further, in the vehicle traffic breaker according to the present invention, the auxiliary return drive unit rotates from the initial position by interlocking with the electric motor that rotates forward based on the detection of the first detection unit and the motor rotating forward. And a pull-in gear for pulling the blocking rod in the return direction.

  According to the vehicle traffic breaker having such a feature, when the electric motor rotates forward by the detection of the blocking bar of the first detection unit, the pull-in gear rotates from the initial position and pulls the blocking bar in the return direction. Perform the action. As a result, torque in the return direction can be applied to the blocking bar, and the blocking bar can be quickly and reliably returned to the non-released state.

  Further, in the vehicle traffic breaker according to the present invention, the electric motor rotates reversely based on the detection of the second detection unit, and the pull-in gear moves to the initial position by interlocking with the reverse rotation of the electric motor. It is preferable to return.

  After the blocking rod returns to the non-released state by the pull-in gear, when the motor rotates in reverse by the detection of the blocking rod of the second detection unit, the pull-in gear rotates toward the initial position and is blocked by the pull-in gear. The pull-in of the rod in the return direction is released. As a result, the application of torque in the return direction with respect to the blocking rod is released, so that a smooth release operation after returning to the non-release state can be performed.

  According to the vehicle traffic barrier of the present invention, the blocking rod can be rotated in the return direction by driving the return drive unit. Further, the return direction torque can be applied to the blocking bar by the auxiliary return driving unit at a predetermined position before the blocking bar is not released. Therefore, the blocking rod after the release operation can be quickly and reliably returned to the non-release state.

It is a perspective view showing a schematic structure of a circuit breaker concerning an embodiment. It is a perspective view showing a schematic structure of a circuit breaker concerning an embodiment. It is the perspective view which looked at the circuit breaker shown in FIG. 1 from the vehicle advancing direction front side. It is a perspective view which shows the internal structure of a return drive part. It is a top view which shows the internal structure of a return drive part. It is a perspective view of the 1st gear and the 2nd gear in a clutch mechanism. FIG. 6 is a perspective view of a return motor, a first worm gear, a first rotating shaft, a second worm gear, a first spur gear, a second rotating shaft, and a first gear in a return drive unit. It is a top view which shows the internal structure of a return drive part. It is a perspective view of the 2nd gear, the 2nd spur gear, and the 3rd spur gear in an arm main part in a support arm, a release axis, and a return drive part. It is a top view which shows the internal structure of a return drive part. It is a longitudinal cross-sectional view which shows a release state holding | maintenance part. It is a longitudinal cross-sectional view which shows a non-release state holding | maintenance part. It is a perspective view which shows the internal structure of an auxiliary | assistant return drive part. It is a top view which shows the internal structure of an auxiliary | assistant return drive part. It is a top view which shows the internal structure of an auxiliary | assistant return drive part. It is a functional block diagram of the circuit breaker concerning an embodiment. It is a flowchart which shows the flow of the process of the opening / closing operation | movement of the blocking rod which a lane server performs. It is a flowchart which shows the flow of the process of the return operation | movement of the blocking rod which a control part performs. It is a top view which shows the internal structure of a return drive part. It is a perspective view which shows the internal structure of an auxiliary | assistant return drive part. It is a top view which shows the internal structure of a return drive part.

Hereinafter, a circuit breaker according to an embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 3, the breaker 10 includes a breaker body 11, a support arm 20 supported by the breaker body 11, and a blocking bar 30 supported by the support arm 20. Yes. Further, the circuit breaker 10 includes a return drive unit 40, a release state holding unit 60, a non-release state holding unit 70, an auxiliary return drive unit 80, and a control unit 90 (not shown in FIGS. 16).

  The circuit breaker body 11 is fixedly installed on the side of the vehicle traffic path R in the toll booth on the highway. An opening / closing shaft 12 (see FIGS. 2 and 3) is provided on a surface of the circuit breaker body 11 facing the vehicle traveling direction G rear side. The opening / closing shaft 12 can be driven to rotate around a horizontal axis along the vehicle traveling direction G by an opening / closing motor 13 (not shown in FIGS. 1 to 3, see FIG. 16) provided in the breaker body 11. ing. The opening / closing motor 13 is a so-called servo motor that can arbitrarily control the rotation speed and rotation angle, and is connected to the control unit 90 and configured to rotate forward and backward based on a command from the control unit 90. Yes. The location where the breaker body 11 is installed is not limited to the toll gate on the highway, and may be a toll gate in a parking lot, for example.

The support arm 20 includes an arm main body 21 and a release shaft 22.
The arm body 21 is fixedly supported by the opening / closing shaft 12 so that the diameter direction of the opening / closing shaft 12 is the longitudinal direction. The arm body 21 is rotated by 90 ° along the vertical plane between the horizontal state in which the longitudinal direction of the arm body 21 is parallel to the horizontal direction and the vertical state in parallel to the vertical direction as the opening / closing shaft 12 rotates. In this range, it can be rotated around the axis of the opening / closing shaft 12.

  The arm main body 21 includes an upper plate portion 21a, a lower plate portion 21b, and a middle plate portion 21c that connect the upper plate portion 21a and the lower plate portion 21b, which are opposed to each other in the vertical direction when being in a horizontal state. I have. That is, the arm main body 21 has a substantially U-shaped cross section perpendicular to the longitudinal direction. In the U-shaped cross section, the middle plate portion 21c that is one side connecting the two sides facing each other up and down is fixedly supported by the opening / closing shaft 12.

  As shown in FIG. 3, the release shaft 22 is the end of the arm body 21, that is, the end of the arm body 21 on the vehicle passage R side (left side in FIGS. 1 and 2) when the support arm 20 is in a horizontal state. Supported by the department. The release shaft 22 is rotatable about an axis that is orthogonal to the longitudinal direction of the arm body 21 and extends along the vertical plane. As a result, when the support arm 20 is in a horizontal state, the release shaft 22 can be rotated about the vertical axis.

The blocking bar 30 is fixedly supported on the release shaft 22 so as to extend in the diameter direction of the release shaft 22. When the support arm 20 is in a horizontal state, a portion of the blocking rod 30 on the side of the vehicle traffic path R viewed from the release shaft 22 is a rod portion 31 that is elongated and prevents the vehicle from traveling. ing. Further, a portion of the blocking rod 30 on the opposite side of the rod portion 31 across the release shaft 22 is a base portion 32 that can be housed inside the U-shaped cross section of the arm body 21.
Such a blocking rod 30 can be rotated around the axis of the release shaft 22 as the release shaft 22 rotates.

In this blocking rod 30, as shown in FIGS. 1 and 3, the extending direction of the blocking rod 30 is parallel to the longitudinal direction of the support arm 20, that is, the blocking rod 30 is in the radial direction of the opening / closing shaft 12. The extended state is a non-release state.
Further, as shown in FIG. 2, the blocking bar 30 rotates 90 ° from the non-released state in the vehicle traveling direction G as the release shaft 22 rotates, and the extending direction of the blocking bar 30 is the support arm 20. A state in which the blocking bar 30 extends in parallel with the opening / closing shaft 12 and the vehicle traveling direction G is a release state. Here, the state rotated 90 ° in the vehicle traveling direction G from the released state is defined as the released state, but the state rotated by an arbitrary angle from the released state toward the vehicle traveling direction G may be defined as the released state. .
Hereinafter, the direction in which the blocking bar 30 rotates from the non-release state to the release state, that is, the direction in which the release operation is performed is referred to as a release direction T1, and conversely, the direction in which the block 30 rotates from the release state to the non-release state The direction in which the return operation is performed is set as a return direction T2.

  Further, in the blocking bar 30, as shown in FIG. 1, the blocking arm 30 is in a substantially horizontal state because the support arm 20 is in a horizontal state and the blocking bar 30 is in a non-released state. At the same time, the blocking position S is a state that extends in a direction substantially perpendicular to the vehicle traveling direction G and prevents the vehicle from traveling. In addition, when the support arm 20 is in the vertical state and the blocking rod 30 is in the non-released state, the state where the blocking rod 30 stands in the vertical direction and allows the vehicle to pass is set as the permission position K. Yes.

  In the present embodiment, the support arm 20 rotates in the range of 90 ° with the rotation of the opening / closing shaft 12, so that the blocking rod 30 brought into the non-released state is moved between the blocking position S and the permission position K. It opens and closes between them. Hereinafter, an operation in which the support arm 20 rotates from the horizontal state to the vertical state is referred to as an opening operation, and an operation in which the support arm 20 rotates from the vertical state to the horizontal state is referred to as a closing operation.

Next, the configuration of the return drive unit 40 will be described.
The return drive unit 40 is a mechanism for rotating the blocking rod 30 rotated in the release direction T1 in the return direction T2 and returning it to the non-release state, as shown in FIGS. The support arm 20 is integrally fixed to the lower part. As shown in FIGS. 4 to 7, the return drive unit 40 includes a return motor (electric motor) 41 housed in a return drive unit main body 40 a having a housing shape, and forward rotation of the return motor 41. A power transmission mechanism 42 for transmitting to the release shaft 22 and a state detection means 55 (not shown in FIG. 4) for detecting the non-release state or release state of the blocking rod 30 are provided.

  The return motor 41 is a so-called servo motor that can arbitrarily control the rotation speed and the rotation angle, and the output shaft 41 a can rotate forward and backward based on a command from the control unit 90.

  The power transmission mechanism 42 includes a first worm gear 43, a first rotating shaft 44, a second worm gear 45, a first spur gear 46, a second rotating shaft 47, a clutch mechanism 48, and a second spur gear 51. The third spur gear 52 is provided.

As shown in FIGS. 4 to 7, the first worm gear 43 is fixed to the tip of the output shaft 41a coaxially with the output shaft 41a, and a male screw that twists around the axis is formed on the outer peripheral surface thereof. ing.
The first rotating shaft 44 is an axis extending in the vertical direction of the return drive unit body 40a when the support arm 20 is in a horizontal state (hereinafter simply referred to as the vertical direction in the description of the return drive unit 40). For example, it is provided so as to be rotatable around an axis via a bearing (not shown) disposed in the return drive unit main body 40a.

  The second worm gear 45 is a substantially disk-shaped member that is coaxially fixed to the first rotation shaft, and rotates integrally with the first rotation shaft 44. Gear teeth are formed on the outer peripheral surface of the second worm gear 45 so as to be screwed with the male screw of the first worm gear 43, whereby the first worm gear 43 and the second worm gear 45 are interlocked with each other around their respective axes. It is designed to rotate.

The first spur gear 46 is a substantially disk-shaped gear fixed coaxially to the first rotating shaft 44, and gear teeth are formed on the outer peripheral surface thereof. The first spur gear 46 is integrally fixed to the upper portion of the second worm gear 45, thereby rotating around the axis in conjunction with the second worm gear 45 and the first rotating shaft 44.
The second rotating shaft 47 is a shaft extending in the vertical direction in parallel with the first rotating shaft 44, and is rotatable around the axis via a bearing (not shown) disposed in the return drive unit main body 40a, for example. Is provided.

The clutch mechanism 48 includes a first gear 49 and a second gear 50 that are arranged coaxially with respect to the second rotating shaft 47.
The first gear 49 has a substantially disk shape that is coaxially and integrally fixed to the second rotating shaft 47, and is configured to rotate about the axis together with the second rotating shaft 47. Gear teeth are formed on the outer peripheral surface of the first gear 49, and the gear teeth mesh with the gear teeth of the first spur gear 46. As a result, the first gear 49 and the first spur gear 46 can rotate in conjunction with each other around their respective axes.

  On the upper surface of the first gear 49, as shown in FIG. 6 (a), a pair of claw portions 49a having point symmetry of 180 ° about the axis so as to sandwich the axis of the first gear 49. , 49a are provided. Each of the claw portions 49 a and 49 a has a columnar shape extending in parallel with the axis of the first gear 49.

As shown in FIGS. 4 and 5, the second gear 50 has a disk shape arranged so as to be rotatable around the axis with respect to the second rotation shaft 47, and overlaps the upper portion of the first gear 49. Is arranged.
As shown in FIG. 6A, the second gear 50 is formed with a pair of grooves 50 a and 50 a that penetrate in the thickness direction of the second gear 50. These groove portions 50a, 50a have an arc shape extending around the axis of the second gear 50, and are arranged so as to be 180 ° point-symmetric about the axis so as to sandwich the axis of the second gear 50. Has been.

  As shown in FIG. 6B, a pair of claw portions 49a, 49b of the first gear 49 are inserted into the grooves 50a, 50a of the second gear 50 in a one-to-one relationship. As a result, the first gear 49 and the second gear 50 can be rotated relative to each other around the axis according to the allowable movement range of the claw portions 49a and 49a in the groove portions 50a and 50a.

  The second spur gear 51 is a gear that is coaxially and relatively rotatable with respect to the second rotation shaft 47 and is integrally fixed to the upper portion of the second gear 50 in the support arm 20 in a horizontal state. Yes. As a result, the second spur gear 51 rotates integrally with the second gear 50. Further, gear teeth are formed on the outer peripheral surface of the second spur gear 51.

  The third spur gear 52 is a gear provided coaxially and integrally with the release shaft 22 below the release shaft 22 provided on the support arm 20, and can rotate in conjunction with the release shaft 22. It is said that. Further, gear teeth are formed on the outer peripheral surface of the third spur gear 52, and the gear teeth mesh with the gear teeth of the second spur gear 51. As a result, the second spur gear 51 and the third spur gear 52 rotate in conjunction with each other around their respective axes.

  Here, when the output shaft 41a of the return motor 41 is rotated forward by a command from the control unit 90, the forward rotation of the output shaft 41a is caused by the first worm gear 43 and the second worm gear in the power transmission mechanism 42 as shown in FIG. 45, and transmitted to the first gear 49 of the clutch mechanism 48 via the first spur gear 46. As a result, the first gear 49 and the claw portions 49a, 49a rotate 90 ° clockwise from the initial position shown in FIG. 5 as shown in FIG. Hereinafter, such an operation of the first gear 49 and the claw portions 49a and 49a is referred to as a forward rotation operation.

On the other hand, after the first gears 49 and 49 and the claw portions 49a and 49a are normally rotated from the initial positions, when the output shaft 41a of the return motor 41 is reversely rotated by a command from the control unit 90, the output shaft 41a is reversely rotated. Is transmitted to the first gear 49 of the clutch mechanism 48 via the first worm gear 43, the second worm gear 45, and the first spur gear 46 in the power transmission mechanism 42. As a result, the first gear 49 and the claw portions 49a and 49a rotate 90 ° counterclockwise in FIG. 8, that is, in the opposite direction to the normal rotation operation, and return to the initial position. Hereinafter, the operation of the first gear 49 and the claw portions 49a and 49a is referred to as reverse rotation operation.
As described above, the first gear 49 and the claw portions 49a, 49a reciprocately rotate in an angle range of 90 ° in accordance with the forward / reverse rotation of the output shaft 41a of the return motor 41.

Further, when the blocking rod 30 performs the release operation and changes from the non-release state to the release state, as shown in FIG. 9, the rotation of the release shaft 22 in the release direction T1 accompanying this release operation is It is transmitted to the second gear 50 via the three spur gears 52 and the second spur gear 51. As a result, the second gear 50 rotates counterclockwise by 90 ° as shown in FIG. 10 from the initial position shown in FIG. Hereinafter, the operation of the second gear 50 is referred to as a release interlocking operation.
After the second gear 50 performs the release interlocking operation, as shown in FIG. 10, the claw portions 49a, 49a at the initial position of the first gear 49 are the ends of the grooves 50a, 50a on the clockwise front side in FIG. It abuts on the abutting end portion 50b to be a part.

On the other hand, when the second gear 50 after the release interlocking operation is rotated 90 ° opposite to the release interlocking operation, the rotation is released via the second spur gear 51 and the third spur gear 52 in the power transmission mechanism 42. Is transmitted to. As a result, the release shaft 22 rotates in the return direction T2. Along with this, the blocking rod 30 performs a return operation from the released state and returns to the non-released state. Hereinafter, such an operation of the second gear 50 is referred to as a return interlocking operation.
As described above, the second gear 50 and the blocking rod 30 are configured to interlock with each other, that is, the release interlocking operation of the second gear 50 and the releasing operation of the blocking rod 30 correspond to each other. The two gears 50 are interlocked with each other so that the return interlocking operation of the two gears 50 and the return operation of the blocking rod 30 correspond to each other.

The state detection means 55 includes a detected disk 56 and a disk detection sensor 57.
The detected disk 56 is a substantially disk-shaped member as shown in FIGS. 5, 8, and 10, and is coaxially and integrally fixed to the upper surface of the second gear 50 in the clutch mechanism 48. The detected disk 56 has an outer diameter larger than the outer diameter of the second gear 50, and further includes a first slit 56a and a first slit 56a formed so as to be cut out radially inward from the outer peripheral edge. Two slits 56b are provided. The first slit 56 a and the second slit 56 b are arranged at an interval of 90 ° in the circumferential direction of the detected disk 56.

  The disk detection sensor 57 is a sensor held on the inner wall of the return drive unit main body 40a, and for example, a distance sensor that can measure the distance to an object by irradiating a laser is employed. In the present embodiment, the disk detection sensor 57 irradiates the laser along the vertical direction of the support arm 20 that is in a horizontal state with respect to the outer peripheral portion of the detected disk 56. Thereby, according to the rotation angle of the detected disk 56, a case where the first slit 56a or the second slit 56b exists in the laser irradiation area and a case where the detected disk 56 exists in the irradiation area are detected. It is supposed to be.

  As shown in FIGS. 5 and 8, such a disk detection sensor 57 is provided in the first slit 56a when the blocking rod 30 is in the non-released state and the second gear 50 is in the initial position. In other words, the first slit 56 a is located in the laser irradiation region of the disk detection sensor 57. In this case, the state detection means 55 recognizes that the blocking bar 30 is in a non-release state.

  As shown in FIG. 10, when the second gear 50 performs the release interlocking operation, the disk detection sensor 57 fixed to the second gear 50 is also rotated in accordance with this, so that the disk detection sensor 57 is rotated. The second slit 56b exists in the laser irradiation region of the sensor 57. Thus, when the first slit 56a is initially positioned in the laser irradiation region of the disk detection sensor 57, the detected disk 56 rotates, so that the object positioned in the laser irradiation region is detected. As such, when the second slit 56b is changed, the state detecting means 55 recognizes that the blocking bar 30 has changed to the released state.

Further, when the second gear 50 performs the return interlocking operation, the disk detection sensor 57 fixed to the second gear 50 is also rotated along with this, so that the laser detection area of the disk detection sensor 57 is changed to the laser irradiation region. The first slit 56a exists. As described above, when the second slit 56b is initially positioned in the laser irradiation region of the disk detection sensor 57, the detection disk 56 rotates, so that the object positioned in the laser irradiation region is detected. As such, when the first slit 56a changes, the state detection means 55 recognizes that the blocking bar 30 has changed to the released state.
As described above, the state detection means 55 detects whether the blocking bar 30 is in a non-release state or a release state.

Next, the configuration of the release state holding unit 60 will be described.
The release state holding unit 60 is a mechanism for holding the blocking bar 30 in the release state, and is provided on the upper surface of the tip of the support arm 20 in a horizontal state as shown in FIGS. In the description of the release state holding unit 60, the vertical direction of the support arm 20 in the horizontal state is simply referred to as the vertical direction.

  As shown in detail in FIG. 11, the release state holding unit 60 is provided with respect to the holding unit main body 61 having a housing shape fixed to the upper surface of the support arm 20 in the horizontal state, and the blocking bar 30 in the released state. An urging latching portion 62 that is latched by the urging force, and an unlocking portion that unlocks the urging latching portion 62 against the blocking rod 30 against the urging force of the urging latching portion 62. 65.

The urging engagement portion 62 is composed of a slide bar 63 and an urging member accommodating portion 64.
The slide bar 63 has a bar shape extending in the vertical direction, and is provided so as to be slidable over a predetermined range in the vertical direction so as to penetrate the holding portion main body 61. At the lower end of the slide bar 63, a locking end 63a that can be engaged with the blocking bar 30 in the released state is provided. The locking end 63a engages with the blocking bar 30 when the slide bar 63 is in the lowest position. Further, a flange portion 63b formed so that the outer peripheral surface of the slide bar 63 is enlarged by one step is provided at a substantially central portion in the vertical direction of the slide bar 63.

The urging member accommodating portion 64 is provided so as to be fitted on the slide bar 63 in the holding portion main body 61. The urging member housing portion 64 allows the slide bar 63 to move in the vertical direction. That is, the slide bar 63 is prevented from sliding in the vertical direction by the urging member housing portion 64. Relative movement is possible. Further, an urging member (not shown) such as a coil spring that urges the slide bar 63 downward is accommodated in the urging member accommodating portion 64. As long as an external force does not act on the slide bar 63 by the urging of the urging member, the slide bar 63 is positioned at the lowest position.
The slide bar 63 positioned at the lowest position by the biasing member of the biasing member accommodating portion 64 is in a state in which the blocking bar 30 is released by the locking end 63a of the slide bar 63 being locked to the blocking bar 30. Hold on.

The lock release unit 65 includes a release motor 66, a screw member 67, a ball nut 68, and a bracket 69.
The release motor 66 is disposed in the holding portion main body 61 such that the output shaft faces downward. A motor side gear 66a having gear teeth formed on the outer peripheral surface is coaxially and integrally fixed to the output shaft.

  The screw member 67 is disposed so as to extend in the vertical direction in the holding portion main body 61, and a male screw that is twisted in the axial direction is formed on the outer peripheral surface thereof. A screw member side gear 67a having gear teeth formed on the outer peripheral surface thereof is coaxially and integrally fixed to the lower end of the screw member 67. The screw member side gear 67a meshes with the motor side gear 66a, whereby the screw member 67 rotates in conjunction with the rotation of the release motor 66.

  The ball nut 68 is a cylindrical member that is externally fitted to the screw member 67, and a female screw that engages with the male screw of the screw member 67 is formed on the inner peripheral side thereof. The ball nut 68 is movable in the extending direction of the screw member 67, that is, in the vertical direction as the screw member 67 rotates. The screw member 67 and the ball nut 68 constitute a ball screw mechanism that converts the rotation of the screw member 67 around the axis line into a linear movement of the ball nut 68 in the vertical direction.

One end of the bracket 69 is fixed to a ball nut 68, and is configured to move up and down in conjunction with the movement of the ball nut 68. The other end of the bracket extends toward the slide bar 63, and the slide bar 63 passes through the portion on the other end side so as to be relatively movable in the vertical direction.
Here, the bracket 69 is in contact with the flange portion 63b of the slide bar 63 from below. Accordingly, when the bracket 69 moves upward, the slide bar 63 is lifted and moved upward. By this operation, the locking end 63a of the slide bar 63 is unlocked from the blocking bar 30.

Next, the configuration of the non-release state holding unit 70 will be described.
The non-release state holding unit 70 is a mechanism for holding the blocking bar 30 in the non-release state, and as shown in FIGS. 1 to 3 and 12, a pair of upper and lower is provided on the arm body 21 of the support arm 20. It has been.
As shown in detail in FIG. 12, the pair of non-release state holding portions 70 and 70 are attached to the upper plate portion 21a and the lower plate portion 21b of the arm body 21 via nuts 71 and bolts 72, respectively. A force projection 73 is provided. The urging protrusions 73 urge the upper plate portion 21a and the lower plate portion 21b from the outer side in the vertical direction of the support arm 20 toward the inner side. When the blocking bar 30 is not released and is housed in the support arm 20, the urging protrusion 73 is formed in recesses 32 a and 32 b formed on the upper and lower surfaces of the base 32 of the blocking bar 30, respectively. Engage each.

  The non-release state holding portion 70 is in a state where the urging protrusion 73 protrudes to the inside of the arm body 21 when the blocking bar 30 is in the release state. When the blocking bar 30 rotates in the return direction T2 and performs a return operation, the biasing protrusion 73 comes into contact with the base 32 of the blocking bar 30 in the middle of the return operation. When the blocking bar 30 is further rotated in the return direction T2 in this state, the biasing protrusion 73 is retracted by the pressing force applied from the blocking bar 30 to the biasing protrusion 73. Further, when the blocking bar 30 is in a non-released state, the biasing protrusion 73 protrudes according to the biasing force with respect to the recesses 32a and 32b in the base 32 of the blocking bar 30. As a result, the urging protrusion 73 and the recesses 32a and 32b are engaged, and the blocking bar 30 is held in the non-released state.

  On the other hand, when the blocking rod 30 performs the release operation from the non-released state, the biasing projection 73 follows the inclination of the recesses 32a and 32b of the blocking rod 30 when rotating in the release direction of the base 32 of the blocking rod 30. fall back. That is, a pressing force due to the rotation of the base portion 32 is applied to the urging protrusion 73, and the urging protrusion 73 moves backward against the urging force, thereby engaging the urging protrusion 73 with the recesses 32a and 32b. Is released.

Next, the configuration of the auxiliary return drive unit 80 will be described.
When the blocking bar 30 that rotates in the return direction T2 reaches a predetermined position before reaching the non-released state, the auxiliary return drive unit 80 applies torque to the blocking bar 30 in the return direction T2. Has a role to grant.
As shown in FIGS. 13 and 14, the auxiliary return drive unit 80 is an auxiliary that forms a housing fixed to the rear end of the support arm 20 (the end opposite to the vehicle passage R) on the arm body 21. Return drive unit main body 80a, auxiliary return motor 81, first spur gear 82, first rotating shaft 83, second spur gear 84, third spur gear 85, second rotating shaft 86, and retraction A gear 87, a locked portion 88, a first detection portion 89a, and a second detection portion 89b are provided.

  The auxiliary return motor 81 is a so-called servo motor that can arbitrarily control the rotation speed and the rotation angle, and is configured to rotate forward and backward based on a command from the control unit 90. The auxiliary return motor 81 is disposed with the output shaft facing upward in the auxiliary return drive unit main body 80a.

The first spur gear 82 is a gear that is coaxially and integrally fixed to the output shaft of the auxiliary return motor 81, and gear teeth are formed on the outer peripheral surface thereof.
The first rotary shaft 83 is a shaft provided in the auxiliary return drive unit main body 80a so as to extend in the vertical direction, and rotates around the axis line through a bearing (not shown) arranged in the auxiliary return drive unit main body 80a. It is possible to rotate.
The second spur gear 84 is coaxially and integrally fixed to the first rotating shaft 83, and gear teeth are formed on the outer peripheral surface thereof. The gear teeth of the second spur gear 84 are meshed with the gear teeth of the first spur gear 82 so that the first spur gear 82 and the second spur gear 84 rotate in conjunction with each other around their respective axes. It has become.

The third spur gear 85 is coaxially and integrally fixed to the first rotation shaft 83, thereby rotating in conjunction with the second spur gear 84 and the first rotation shaft 83. Gear teeth are formed on the outer peripheral surface of the third spur gear 85.
The second rotary shaft 86 is a shaft provided in the auxiliary return drive unit main body 80a so as to be parallel to the first rotary shaft 83, that is, to extend in the vertical direction. It can be rotated around an axis via a bearing (not shown) disposed in the main part 80a.

The pull-in gear 87 is integrally fixed to the second rotary shaft 86, and rotates around the axis along with the rotation of the second rotary shaft 86. A gear portion 87 a centering on the axis is provided on a part of the outer peripheral surface of the pull-in gear 87. The gear teeth formed on the gear portion 87a mesh with the gear teeth of the third spur gear 85, so that the third spur gear 85 and the pull-in gear 87 can rotate together around their respective axes. It is said that.
Further, a pull-in portion 87b formed so as to protrude outward in the radial direction of the axis is formed on a portion of the outer peripheral surface of the pull-in gear 87 opposite to the gear portion 87a across the axis. ing.

  The locked portion 88 is integrally attached at the rear end of the base portion 32 of the blocking rod 30 so as to extend in the vertical direction. The locked portion 88 is disposed so as to protrude from the inside of the arm main body 21 into the auxiliary return drive portion main body 80a when the blocking bar 30 is in the non-released state. The locked portion 88 can be locked so that the pull-in portion 87b of the pull-in gear 87 is hooked from the rear side in the return direction T2.

Here, as shown in FIG. 14, the position of the locked portion 88 where the pull-in portion 87 b is outside the rotation locus L of the locked portion 88, that is, the locked portion 88 of the base portion 32 of the blocking rod 30. The position of the locked portion 88 that does not contact the retracting portion 87 b is the initial position of the locked portion 88 and the pull-in gear 87.
The pull-in gear 87 is engaged with the locked portion 88 by being rotated from the initial position in the clockwise direction (locking rotation direction U1) of FIGS. 14 and 15. Further, the pull-in gear 87 engaged with the locked portion 88 is disengaged from the locked portion 88 by rotating in the counterclockwise direction (release rotation direction U2) of FIG. At the same time, it returns to the initial position.

  The first detection unit 89a has a role of detecting that the blocking bar 30 has reached the predetermined position before reaching the non-released state in the return direction T2 from the released state. The first detection unit 89a is installed, for example, in the lower part of the auxiliary return drive unit main body 80a, and is attached to the rear end of the base 32 of the blocking bar 30 by a laser beam radiated upward as shown in FIG. The presence or absence of the locked portion 88 is detected. Thus, it is detected whether or not the blocking bar 30 has reached a predetermined position before reaching the non-release state. In addition to the laser irradiation type, various configurations can be adopted as the first detection unit 89a.

  Here, the predetermined position before the blocking rod 30 reaches the non-released state is that the biasing protrusion 73 of the non-released state holding portion 70 is when the blocking rod 30 rotates in the return direction T2 from the released state. It means the angular position of the blocking bar 30 when contacting the base 32 of the blocking bar 30. Therefore, when the blocking bar 30 in the released state rotates in the return direction T2 and the blocking bar 30 comes into contact with the urging protrusion 73 of the non-released state holding unit 70, the first detection unit 89a The locked portion 88 at the rear end of the base portion 32 is detected.

  The second detection unit 89b has a role of detecting that the blocking bar 30 has reached the released state as a result of the released blocking bar 30 being rotated in the return direction T2. As the second detection portion 89b, a switch sensor provided on the inner surface of the middle plate portion 21c in the arm main body 21 of the support arm 20, as shown in FIG. Thereby, when the blocking rod 30 is in a non-released state, the base 32 of the blocking rod 30 abuts on the second detection unit 89b, so that the second detection unit 89b is in a non-released state of the blocking rod 30. Detect return to. In addition, as this 2nd detection part 89b, the thing of various structures other than a switch sensor is employable.

  Next, the control unit 90 will be described based on the functional configuration of the circuit breaker 10. FIG. 16 is a functional block diagram showing functional configurations of the circuit breaker 10 and peripheral devices. The control unit 90 in the circuit breaker 10 includes an opening / closing motor 13, a return motor 41 of the return drive unit 40, an auxiliary return motor 81 of the auxiliary return drive unit 80, and a release motor 66 of the release state holding unit 60. And the 1st detection part 89a and the 2nd detection part 89b are each connected.

  The control unit 90 performs drive control of the auxiliary return motor 81 based on input of signals from the first detection unit 89a and the second detection unit 89b. Specifically, when the signal is input from the first detection unit 89a, the control unit 90 rotates the output shaft of the auxiliary return motor 81 in the forward direction, and when the signal is input from the second detection unit 89b. For this, the output shaft of the auxiliary return motor 81 is reversely rotated.

  In addition, a lane server 130 to which a vehicle detector 131, a roadside antenna 132, and an operation unit 133 are connected as peripheral devices is provided outside the circuit breaker 10. The lane server 130 is connected to the control unit 90 in the circuit breaker 10, and sends a signal to the control unit 90 in accordance with inputs from the vehicle detector 131, the roadside antenna 132, and the operation unit 133.

  The vehicle detector 131 includes a plurality of pairs of optical sensors installed on both sides of the vehicle traffic path R, for example, and is configured to detect entry and exit of the vehicle to the toll gate. That is, the vehicle detector 131 detects, for example, the entry of the vehicle to the toll gate by a first optical sensor installed on the entrance side of the toll gate (the rear side in the vehicle traveling direction G of the circuit breaker 10). The exit of the vehicle from the toll gate is detected by a second optical sensor installed on the exit side of the toll gate (front side in the vehicle traveling direction G of the circuit breaker 10). The vehicle detector 131 outputs a signal corresponding to the entry and exit of the vehicle to the lane server 130 based on the detection of the entry and exit of the vehicle.

The roadside antenna 132 is installed, for example, on the rear side of the vehicle traveling direction G from the circuit breaker 10, and when the vehicle passes through the toll gate, it transmits and receives necessary information to and from the vehicle-mounted device mounted on the vehicle. A signal based on transmission / reception of information is output to the lane server 130.
The lane server 130 then sends a vehicle passage permission command and a vehicle exit detection signal to the control unit 90 based on the input of signals from the vehicle detector 131 and the roadside antenna 132. The control unit 90 causes the blocking bar 30 to perform an opening operation by driving the opening / closing motor 13 to rotate forward based on the vehicle passage permission command. On the other hand, the control unit 90 causes the blocking bar 30 after the opening operation to perform the closing operation by driving the opening / closing motor 13 to rotate in reverse based on the vehicle exit detection signal.

  The operation unit 133 is installed in a room of a tollgate in the vicinity of the toll booth. For example, when the “open button” or the “close button” is pressed, the operation bar 133 is blocked against the lane server 130 by the blocking bar 30. Outputs the open / close request. The lane server 130 sends an opening / closing command to the control unit 90 based on the opening / closing request, and the control unit 90 performs the opening / closing operation of the blocking rod 30 by rotating the opening / closing motor 13 based on the opening / closing command. . The operation unit 133 may be installed in a monitoring center or the like located away from the toll gate.

  Further, the operation unit 133 is also connected to the control unit 90, and sends a release return command for the blocking rod 30 to the control unit 90 based on, for example, pressing a “release return button”. When the release return command is input, the control unit 90 drives the release motor 66 and then drives the return motor 41.

Next, the effect | action of the circuit breaker 10 of this embodiment is demonstrated.
When the vehicle has not entered the vehicle traffic path R and the circuit breaker 10 is in a standby state, the support arm 20 is in a horizontal state and the blocking bar 30 is in a non-released state, as shown in FIGS. That is, the blocking bar 30 is in the blocking position S, which is the home position.

In this non-released state, the return drive unit 40 positions the first gear 49 and the second gear 50 of the clutch mechanism 48 in the initial state as shown in FIG. In addition, the first slit 56a of the detected disk 56 is positioned in the laser irradiation region of the disk detection sensor 57 in the state detection means 55, whereby the blocking bar 30 is in a non-released state. Has been detected.
Further, in the release state holding part 60, the ball nut 68 and the bracket 69 of the locking release part 65 are at the lowest position, and the slide bar 63 of the biasing locking part 62 is a biasing member of the biasing member accommodating part 64. It is in the lowest position according to the bias.

  Further, in the non-release state holding portion 70, the biasing projection 73 is engaged with the recesses 32a and 32b of the base portion 32 of the blocking rod 30 according to the biasing, so that the blocking rod 30 rotates in the release direction T1. The movement is blocked, that is, the blocking bar 30 is held in a non-released state. This prevents the blocking rod 30 from inadvertently releasing.

  Further, in this non-released state, the pull-in gear 87 in the auxiliary return drive unit 80 is engaged with a locked portion 88 provided on the base portion 32 of the blocking rod 30 as shown in FIGS. 13 and 14. It is located in the initial position with no.

  First, the processing procedure of the opening / closing operation of the blocking bar 30 when the vehicle enters the toll gate having the circuit breaker 10 in the standby state as described above will be described. The opening / closing operation of the blocking rod 30 is performed under the control of the lane server 130. FIG. 17 is a flowchart showing a process flow of the opening / closing operation of the blocking bar 30 executed by the lane server 130.

  First, the lane server 130 determines whether or not the vehicle detector 131 has detected the entry of the vehicle to the toll gate, that is, whether or not the ON signal (vehicle detection signal) from the vehicle detector 131 has been input. (S11). As a result, when it is determined that an OFF signal is input from the vehicle detector 131 (S11: No), the lane server 130 waits until an ON signal is input from the vehicle detector 131. On the other hand, when it is determined that an ON signal is input from the vehicle detector 131 (S11: Yes), the lane server 130 sends a reception command for in-vehicle device information to the roadside antenna 132 (S12), and the roadside antenna 132 is output. Starts communication with the vehicle-mounted device mounted on the vehicle based on this signal.

  Next, the lane server 130 determines whether the vehicle about to pass through the toll gate is a normal vehicle or an abnormal vehicle based on the vehicle-mounted device information received by the roadside antenna 132 (S13). As a result, when it is determined that the vehicle is an abnormal vehicle (S13: No), the lane server 130 performs an abnormal process (S14) and maintains the blocking rod 30 at the blocking position S without performing the opening operation of the blocking rod 30. . Thereby, the process of the lane server 130 at the time of determining that it is an abnormal vehicle in S13 is complete | finished.

  On the other hand, when it is determined in S13 that the vehicle is a normal vehicle (S13: Yes), the lane server 130 sends a vehicle passage permission command to the control unit 90. Accordingly, the control unit 90 rotates the output shaft of the opening / closing motor 13 in the forward direction to rotate the support arm 20 and the blocking bar 30 from the blocking position S to the permission position K (S15). Thereby, the circuit breaker 10 will be in the state which permitted the passage of the vehicle.

  After S15, the lane server 130 determines whether or not the vehicle has detected exit from the toll gate, that is, whether or not an OFF signal has been input from the vehicle detector 131 as a result of completion of vehicle detection by the vehicle detector 131. Is determined (S16). If it is determined that the ON signal is still input from the vehicle detector 131 (S16: No), the lane server 130 waits until an OFF signal is input from the vehicle detector 131. On the other hand, when it is determined that an OFF signal is input from the vehicle detector 131 (S16: Yes), the lane server 130 sends a vehicle exit detection signal to the control unit 90. Based on the vehicle exit detection signal, the control unit 90 rotates the output shaft of the opening / closing motor 13 in the reverse direction to rotate the support arm 20 and the blocking bar 30 from the release position K to the blocking position S (S17). Thereby, the circuit breaker 10 is in a state where the passage of the vehicle is blocked, and the processing of the lane server 130 when determining that the vehicle is a normal vehicle in S13 ends.

  Here, as described above, when the lane server 130 determines that the vehicle is abnormal and performs abnormality processing, the blocking rod 30 is maintained at the blocking position S, so that the vehicle collides with the blocking rod 30. There is a case. Further, even when the lane server 130 determines that the vehicle is a normal vehicle and causes the blocking bar 30 to perform an opening operation, the vehicle may collide with the blocking bar 30 if the approach speed of the vehicle is too fast. At this time, in this embodiment, the release operation of the blocking rod 30 is performed.

  That is, when a vehicle traveling in the vehicle traveling direction G collides with the bar portion 31 of the blocking bar 30, the impact force acts as a rotational moment that rotates the blocking bar 30 in the release direction T1. In the non-release state holding portion 70, the urging protrusion 73 is displaced from the recesses 32a and 32b against the urging force by the rotational moment, and the urging protrusion 73 and the recesses 32a and 32b are engaged with each other. Is released. Thereby, the non-release state holding of the blocking bar 30 is released, and the blocking bar 30 is rotated in the release direction T1.

  As described above, when the blocking rod 30 is rotated in the release direction T1, the third spur gear 52 and the power transmission mechanism 42 of the return drive unit 40, as shown in FIG. The second gear 50 of the clutch mechanism 48 performs a release interlocking operation via the second spur gear 51. When the blocking rod 30 is in the released state, the contact end portions 50b and 50b of the grooves 50a and 50a of the second gear 50 are respectively brought into contact with the claw portions 49a and 49a of the first gear 49 at the initial position. Touch.

When the blocking bar 30 is in the released state in this way, as shown in FIG. 11A, the locking end 63a of the slide bar 63 in the biasing locking portion 62 of the released state holding portion 60. Is locked to the base 32 of the blocking bar 30, that is, a locked state in which the released state of the blocking bar 30 is held. Thereby, the release operation of the blocking bar 30 is completed.
Further, when the blocking bar 30 performs the release operation in this way, the laser irradiation area of the disk detection sensor 57 in the state detection means 55 changes to the first slit 56a, the detected disk 56, and the second slit 56b. . Thereby, it is detected in the state detection means 55 that the blocking bar 30 is in the released state.

Next, when the blocking bar 30 is in the released state after the release operation is completed, the returning operation for rotating the blocking bar 30 in the return direction T2 to return to the non-released state will be described.
This return operation is performed on the basis of a release return command that is sent, for example, by an operation of the operation unit 133 by a staff at a toll gate when the blocking rod 30 after the release operation is in the release state. FIG. 18 is a flowchart showing the flow of processing of the return operation of the blocking bar 30 executed by the control unit 90.

  First, the control unit 90 determines whether an ON signal is input from the operation unit 133, that is, whether a release return command is input from the operation unit 133 (S21). As a result, when it is determined that an OFF signal is input from the operation unit 133 (S21: No), the process waits until an ON signal is input from the operation unit 133.

  When the control unit 90 determines that the ON signal is input from the operation unit 133 (S21: Yes), it sends a command to release the holding of the blocking bar 30 to the release state holding unit 60 (S22). That is, the control unit 90 drives the release motor 66 in the lock release unit 65 to move the slide bar 63 of the biasing lock unit 62 upward as shown in FIG. Then, the locking end 63a of the slide bar 63 with respect to the base 32 of the blocking bar 30 is released. As a result, the holding state of the blocking bar 30 in the released state is released, and the blocking bar 30 becomes rotatable in the return direction T2.

  Next, the control unit 90 rotates the output shaft 41a of the return motor 41 in the return drive unit 40 in the forward direction (S23), thereby causing the first gear 49 of the clutch mechanism 48 in the power transmission mechanism 42 to rotate in the positive direction of 90 ° around the axis. Rotate. At this time, as shown in FIG. 19, the contact end portions 50b and 50b of the grooves 50a and 50a of the second gear 50 are in contact with the claw portions 49a and 49a of the first gear 49 in the rotational direction front side. In conjunction with the forward rotation operation of the first gear 49, the second gear 50 also rotates in the same direction. In other words, the claw portions 49a, 49a of the first gear 49 press the contact end portions 50b, 50b in the grooves 50a, 50a of the second gear 50, thereby interlocking with the forward rotation operation of the first gear 49. The two gears 50 perform a return interlocking operation.

  When the second gear 50 performs the return interlocking operation in this way, the rotation based on the return interlocking operation is transmitted to the release shaft 22 via the second spur gear 51 and the third spur gear 52, and the release shaft 22 returns to the return direction. Rotate to T2. Accordingly, the blocking bar 30 supported by the release shaft 22 rotates in the return direction T2.

Thereafter, the control unit 90 determines whether or not a signal is input from the first detection unit 89a (S24). That is, whether or not the blocking rod 30 has been detected by the first detection unit 89a as a result of the blocking rod 30 rotating in the return direction T2 due to the contribution of the return driving unit 40 and reaching the predetermined position before the non-released state. Determine. At this predetermined position, the urging protrusion 73 of the non-release state holding portion 70 abuts against the blocking rod 30, and the abutment serves as a resistance for the returning operation of the blocking rod 30.
If it is determined that no signal is input from the first detection unit 89a (S24: No), the process waits until a signal is input from the first detection unit 89a.

  On the other hand, when the control unit 90 determines that a signal is input from the first detection unit 89a (S24: Yes), the control unit 90 rotates the output shaft of the auxiliary return motor 81 in the auxiliary return drive unit 80 in the normal direction. . Then, in conjunction with the normal rotation of the auxiliary return motor 81, the pull-in gear 87 rotates in the locking rotation direction U1, and the pull-in portion 87b blocks the locked portion 88 as shown in FIG. The rod 30 is engaged so as to be caught from the rear side in the return direction T2 of the rod 30. Then, when the pulling gear 87 rotates in the locking rotation direction U1 with the further forward rotation of the output shaft of the auxiliary return motor 81 in the engaged state, the pulling portion 87b causes the locked portion 88 to move. It draws in the locking rotation direction U1. That is, the pulling portion 87b of the pulling gear 87 pulls the locked portion 88 in the locking rotation direction U1, whereby torque in the return direction T2 is applied to the blocking rod 30. In this way, the blocking bar 30 is rotated in the return direction T2 by the contribution of the auxiliary return drive unit 80 in addition to the return drive unit 40.

Next, the control unit 90 determines whether or not a signal is input from the second detection unit 89b (S26). That is, as a result of the contribution of the return drive unit 40 and the auxiliary return drive unit 80, as shown in FIG. 20, the blocking rod 30 is rotated in the return direction T2 and the blocking rod 30 reaches the released state. It is determined whether the part 89b has detected. When the blocking bar 30 reaches the released state in this way, the urging protrusion 73 of the non-released state holding unit 70 engages with the recesses 32a and 32b of the base 32, and the blocking bar 30 is held in the non-released state. .
When it is determined that no signal is input from the second detection unit 89b (S26: No), the process waits until a signal is input from the second detection unit 89b.

  On the other hand, when the control unit 90 determines that a signal is input from the second detection unit 89b (S26: Yes), the output shaft of the auxiliary return motor 81 in the auxiliary return drive unit 80 is reversely rotated (S27). Then, in conjunction with this reverse rotation, the pull-in gear 87 rotates in the release rotation direction U2, the lock of the pull-in portion 87b of the pull-in gear 87 with respect to the locked portion 88 is released, and the pull-in gear 87 It returns to the initial position shown in FIG.

  Subsequently, the control unit 90 reversely rotates the return motor 41 in the return drive unit 40 (S28), thereby turning the first gear 49 of the clutch mechanism 48 in the power transmission mechanism 42 around the axis as shown in FIG. A 90 ° reverse rotation operation is performed. Thereby, the 1st gear 49 and the nail | claw parts 49a and 49a return to an initial position, and the reset operation | movement of the blocking rod 30 is completed.

When the return operation of the blocking bar 30 is completed in this manner, the release motor 66 of the release state holding unit 60 is driven to rotate reversely, so that the bracket 69 moves downward. Then, the slide bar 63 of the urging latch 62 moves downward according to the urging of the urging member housing 64. As a result, the locking end 63a returns to the lowest position where it can be locked to the base 32 of the blocking bar 30 in the released state.
Here, the locking end 63a is returned to the lowest position after the return operation of the blocking bar 30 is completed. However, the present invention is not limited to this, and the base of the blocking bar 30 performing the returning operation is not limited thereto. The configuration may be such that the locking end 63a returns to the lowest position when 32 rotates to a position where it cannot be locked to the locking end 63a at the lowest position.

As described above, in the circuit breaker 10 of the present embodiment, when the blocking rod 30 rotates in the release direction T1 due to the collision of the vehicle with the blocking rod 30, the return drive unit 40 is driven. The blocking bar 30 can be rotated in the return direction T2.
That is, only when the release shaft 22 is in the release state, the first gear 49 and the pawl are brought into contact with the pawl portions 49a and 49a by the contact end portions 50b and 50b of the grooves 50a and 50a of the second gear 50. The forward rotation operation of the portions 49 a and 49 a is transmitted to the second gear 50. Thereby, the blocking rod 30 interlocked with the release shaft 22 can be rotated in the return direction T2.

  Here, in this embodiment, since the non-release state holding part 70 is provided to avoid inadvertent rotation of the blocking bar 30 from the non-released state, the blocking bar 30 rotates in the return direction T2. Then, the base portion 32 of the blocking bar 30 comes into contact with the urging protrusion 73 of the non-release state holding portion 70 at a predetermined position before the non-release state. Therefore, the contact of the urging protrusion 73 becomes a resistance of the blocking bar 30 rotating in the return direction T2, and the blocking bar 30 may not be returned to the non-released state only by the contribution of the return drive unit 40.

  On the other hand, in the present embodiment, when the blocking rod 30 reaches a predetermined position before the non-released state, that is, the base portion 32 of the blocking rod 30 contacts the urging protrusion 73 of the non-released state holding portion 70. When contacted, torque in the return direction T <b> 2 by the auxiliary return drive unit 80 is applied to the blocking rod 30. Accordingly, the blocking rod 30 can be quickly and smoothly returned to the non-released state by the contribution of the auxiliary return drive unit 80 and the return drive unit 40.

  Further, the auxiliary return drive unit 80 in the present embodiment includes a first detection unit 89a that detects the arrival of the blocking bar 30 at the predetermined position, and is based on the detection of the blocking bar 30 by the first detection unit 89a. Thus, a torque is applied to the blocking rod 30 in the return direction T2. Therefore, when the blocking bar 30 rotates in the return direction T2 and reaches the predetermined position, torque in the return direction T2 can be quickly applied to the blocking bar 30. As a result, the blocking rod 30 can be returned to the non-released state more quickly and reliably.

Furthermore, the auxiliary return drive unit 80 in the present embodiment further includes a second detection unit 89b that detects the arrival of the blocking bar 30 in the non-release state, and the blocking bar 30 is based on the detection of the second detection unit 89b. It is set as the structure which cancels | releases provision of the torque to. As a result, when the blocking bar 30 is turned to the return direction T2 and is in a non-released state, the auxiliary return drive unit 80 can quickly release the torque applied to the blocking bar 30 in the return direction T2. it can.
Therefore, for example, even when the vehicle collides with the blocking rod 30 immediately after the blocking rod 30 returns to the non-released state, the release operation of the blocking rod 30 is not hindered, and the collision by the vehicle is smoothly performed. It is possible to escape.

  As mentioned above, although embodiment of this invention was described in detail, unless it deviates from the technical idea of this invention, it is not limited to these, A some design change etc. are possible.

  For example, in the state detection means 55 of the embodiment, the blocking rod 30 is in the non-release state based on the change of the first slit 56a, the second slit 56b, or the detected disk 56 itself in the laser irradiation region of the disk detection sensor 57. However, the present invention is not limited to this, and other configurations may be adopted as long as the non-release state and the release state of the blocking rod 30 can be discriminated. Good. For example, adopting a configuration for detecting the relative angle of the blocking rod 30 with respect to the support arm 20 or a configuration for detecting the rotation angle of the release shaft 22 itself can be mentioned.

  Further, as the non-release state holding portion 70, not only a configuration for holding the blocking bar 30 by the biasing of the biasing protrusion 73 but also other configurations as long as the blocking rod 30 can be held in the non-released state are adopted. May be. For example, a configuration in which the blocking rod 30 is held by a ball catch, or a configuration in which the blocking rod 30 is held in a non-released state by a magnet provided on at least one of the support arm 20 side or the blocking rod 30 side can be employed. .

  Further, as the first detection unit 89a, for example, a configuration may be provided in which a slit for driving the pulling gear 87 is provided in the detected disk 56, or the blocking rod 30 is a biasing protrusion of the non-release state holding unit 70. It is good also as a structure which performs the detection for driving the drawing gear 87 by contact | abutting to 73 or pressing.

  In addition, the second detector is not provided with a new detector as in the above-described embodiment, but is detected by detecting that the blocking bar 30 has been rotated to the non-released state by detecting the detected disk 56. The gear 87 may be configured to return to the initial position.

  Further, the auxiliary return drive unit 80 according to the embodiment is configured to apply the torque in the return direction T2 to the blocking bar 30 by the pulling-in gear 87 pulling the blocking bar 30, but is not limited thereto. For example, when the electromagnet is disposed on the support arm 20 and the blocking rod 30 reaches the predetermined position, the electromagnet is energized to apply torque to the blocking rod 30 by magnetic force. Also good. In this case, an electromagnet may be disposed on the blocking bar 30.

In the embodiment, when the blocking bar 30 rotates in the return direction T2 from the released state to a predetermined position before the blocking bar 30 reaches the non-released state, the non-released state holding unit 70 is biased. Although defined as the angular position of the blocking bar 30 when the protrusion 73 abuts against the base 32 of the blocking bar 30, the present invention is not limited to this, and if the angular position is before reaching the non-release state, the blocking is performed. Depending on the design of the machine 10, it can be adopted as appropriate.
Even when the non-release state holding unit 70 is not installed, the auxiliary return driving unit 80 allows the blocking rod 30 to return to the non-release state quickly and smoothly.

DESCRIPTION OF SYMBOLS 10 ... Circuit breaker 11 ... Circuit breaker main body 12 ... Opening / closing shaft 13 ... Opening / closing motor 20 ... Support arm 21 ... Arm main body 22 ... Release shaft 30 ... Blocking bar 31 ... Bar part 32 ... Base 40 ... Return drive part 41 ... For return Motor (electric motor)
41a ... output shaft 42 ... power transmission mechanism 48 ... clutch mechanism 49 ... first gear 49a ... claw part 50 ... second gear 50a ... groove part 50b ... contact end 55 ... state detection means 60 ... release state holding part 62 ... with Force locking part 65 ... Unlocking part 70 ... Non-release state holding part 80 ... Auxiliary return driving part 81 ... Auxiliary return motor 87 ... Cam 87a ... Gear part 87b ... Retraction part 88 ... Locked part 89a ... First Detection unit 89b ... second detection unit 90 ... control unit T1 ... release direction T2 ... return direction R ... vehicle path G ... vehicle traveling direction

Claims (5)

A blocking rod that is rotated between a blocking position for blocking the passage of the vehicle and a permission position for allowing the vehicle to travel, and for opening and closing;
A release shaft that rotatably supports the blocking bar in a release direction for releasing an impact caused by the vehicle;
A return drive unit that rotates the blocking rod in the released state in a return direction that is opposite to the release direction;
An auxiliary return drive for applying torque in the return direction to the blocking bar when the blocking bar rotating in the return direction reaches a predetermined position before reaching the non-release state; A vehicle traffic breaker comprising: A first detector for detecting the arrival of the blocking bar at the predetermined position;
2. The vehicle traffic breaker according to claim 1, wherein the auxiliary return drive unit applies the torque to the blocking bar based on detection of the blocking bar by the first detection unit. A second detector for detecting the arrival of the blocking rod in the non-release state;
3. The vehicle traffic breaker according to claim 2, wherein the auxiliary return drive unit releases the application of torque to the blocking bar based on detection by the second detection unit. The auxiliary return drive unit is
An electric motor that rotates forward based on the detection of the first detection unit;
The vehicle traffic breaker according to claim 3, further comprising a pull-in gear that rotates from an initial position in conjunction with forward rotation of the electric motor and pulls the blocking bar in a return direction. The electric motor rotates in reverse based on the detection of the second detection unit,
The vehicle traffic breaker according to claim 4, wherein the pull-in gear returns to the initial position in conjunction with reverse rotation of the electric motor.

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