JP4609819B2 - Automatic gate opening and closing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic opening / closing device for a gate which can be opened / closed either manually or automatically by adding an automatic opening / closing device to the gate which is manually opened / closed.
[0002]
[Prior art]
Conventionally, manual gate opening and closing devices include a type that opens and closes on the ground rail by sliding, a type that opens and closes by sliding on the upper rail provided along the duck, etc., and a type that opens and closes by swing A type is known in which both sides of the gate and two support columns are rotatably connected by arms, and the arms are opened and closed by rotating vertically on the support column side.
[0003]
[Problems to be solved by the invention]
In the type that opens and closes up and down with the arm of the various manual gate opening and closing devices as described above, it can be automatically opened and closed by adding a simple device, and the power is shut off or automatically opened and closed There has been a demand for a gate opening and closing device that can be opened and closed by a manual operation while the automatic opening and closing device remains connected even when the device breaks down.
[0004]
An object of the present invention is to provide an automatic opening / closing device for a gate which can be opened / closed either manually or automatically by adding an automatic opening / closing device to the gate which is manually opened / closed.
[0005]
[Means for Solving the Problems]
The present invention, one end of the main arm and the auxiliary arm gates body rotatably connected to the other end of the main arm rotatably connected to a rotary spindle to the support, the other end of the auxiliary arm in the rotatably connected to the vertically movable on the strut, switchgear gates which is adapted to open and close the gates body the rotary spindle in the post side of the main arm as a fulcrum, the auxiliary arm in the post-side the connecting position of said main arm forward and backward and rotatably connected to one end of the push-up arm for rotating the, the other end of the push-up arm, and rotatably connected to one end of the arm to advance and retract the push-up arm, the other end of the arm, it connects the motor to rotate the arm, the rotational connection between the arm and the push-up arm, a bearing provided on one the bearing support long hole formed in the other That fit the a device for automatically opening and closing of the gates, wherein.
[0006]
With the configuration described above, the automatic opening and closing can be automatically performed, and the automatic opening and closing device remains connected even when the power supply is cut off or the automatic opening and closing device fails. be able to.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
First, a manual opening / closing gate type that opens and closes vertically with an arm will be described.
In FIG. 1, the gate main body 10 is rotatably connected to two columns 11 by two main arms 13 and two auxiliary arms 14 respectively. More specifically, the main arm 13 is rotatably attached to the rotary main shaft 16 on the support column 11 side, and the auxiliary arm 14 is rotatably connected to the sliding shaft 17 on the support column 11 side, and the gate door. As the main body 10 is opened and closed, it slides in the guide slot 20 in the vertical direction. On the gate body 10 side, the main arm 13 and the auxiliary arm 14 are rotatably connected to the vertical rod 12 by a door support shaft 15.
Reference numeral 30 denotes a control box according to the present invention, details of which will be described later.
[0008]
The connection structure of the main arm 13 and the auxiliary arm 14 in the column 11 is shown in FIG. In FIG. 7, the base end portion of the main arm 13 is pivotally attached to a rotation main shaft 16 provided on the support 11.
A dog-shaped lever 18 is provided at a position slightly below the rotation main shaft 16 so that one end of the lever 18 can be rotated by a lever rotation shaft 28. A link shaft 23 is linked to the other end of the lever 18. Further, a spring mandrel 22 is rotatably connected to a bent portion of the lever 18 by a lever support shaft 27.
[0009]
The spring mandrel 22 is fitted to a lower spring support plate 24 in the support column 11 so as to be movable up and down and swingable, and the spring flange 26 at the upper end of the spring mandrel 22 and the spring support plate 24 above the spring support plate 24. A coil spring 21 is interposed between the receiving seat 25.
A base end portion of the auxiliary arm 14 is rotatably connected to the other end portion of the link 19 by a slide shaft 17, and the slide shaft 17 can move up and down along a vertical guide long hole 20. Is provided.
[0010]
In the above configuration, when the gate body 10 is closed as indicated by the solid lines in FIGS. 1 and 7, the load of the gate body 10 is transmitted through the auxiliary arm 14, the link 19, the lever 18, and the lever support shaft 27. The coil spring 21 is added in the direction of compressing. At this time, if the center point of the receiving seat 25 is O, and the axis centers of the lever rotation shaft 28 and the lever support shaft 27 are A and B, respectively, while the angle formed by ∠AOB = θ is small, the coil spring 21 Since the torque acting on 18 is small, the load of the gate body 10 slightly exceeds the pushing force of the coil spring 21 and is stably closed.
[0011]
When opening the gate main body 10, if the gate main body 10 is lifted by hand, the main main body 13 and the auxiliary arm 14 are substantially parallel and the gate main body 10 is kept at a substantially right angle with the angle between the vertical arm 12. To rise. As the gate body 10 rises, the sliding shaft 17 of the auxiliary arm 14 rises along the guide long hole 20. Since the lever 18 also rotates as the link 19 moves up, the angle θ gradually increases, the torque acting on the gate body 10 via the lever 18 increases, and the gate body 10 is lifted lightly in balance with the coil spring 21. It is done. When the sliding shaft 17 reaches the upper end of the guide slot 20, the gate body 10 reaches the uppermost position and is fully opened as indicated by the chain line in FIG.
When the gate body 10 is closed, the reverse of the above description is obtained.
[0012]
Next, an embodiment in which an automatic opening / closing device for a gate according to the present invention is adopted for a manual opening / closing gate of the type that is opened and closed vertically by an arm as described above will be described with reference to the drawings.
In FIG. 2, control boxes 30 and 30 are attached to the left and right columns 11, 11, respectively.
Since the internal configuration of each control box 30, 30 is the same except that they are opposite to each other, only one control box 30 will be described.
A geared motor 32 is housed in the control box 30, and a sprocket 38 is fixed to a drive shaft 36 of the geared motor 32. The sprocket 38 is transmitted to a sprocket 43 having a larger diameter by a chain 39. . In addition, a breaker 37 is provided in the vicinity of the geared motor 32 inside the control box 30, and an up button 33, a down button 34, and a stop button 35 that can be operated from the outside are provided.
[0013]
The sprocket 43 is rotatably mounted by a rotation main shaft 40 provided in the control box 30, and an arm 41 is fixed to the sprocket 43, and a push-up arm 31 is attached to the tip of the arm 41 via a support shaft 42. One end of the push-up arm 31 is pivotably attached, and the other end of the push-up arm 31 projects from the control box 30 and is pivotally connected to the sliding shaft 17. Further, an upper limit switch 44 and a lower limit switch 45 are provided facing the reciprocating rotation position of the arm 41.
[0014]
3 and 4, the rotation main shaft 40 is fixed to the control box 30 by welding or the like, and two bearings 57 are fitted on the outer periphery of the rotation main shaft 40 and fixed with washers 61 and bolts 60. Has been. A flange 58 of the sprocket 43 is fitted on the outer periphery of the bearing 57, and one end of the arm 41 is fixedly attached to the flange 58 portion by a bolt 59.
[0015]
A support shaft 42 is fixedly attached to the other end portion of the arm 41 by welding. A lock release lever 47 is rotatably fitted to the first stage of the support shaft 42, and the second stage has the second stage. A bearing 49 is fitted and fixed by a washer 56 and a bolt 55. The bearing 49 is fitted in the bearing support long hole 51 of the bearing support plate 50 and is held by the front and back bearing lids 52.
[0016]
The bearing support plate 50 is connected to the end of the push-up arm 31 by a connecting pin 46. At this time, the bearing support long hole 51 is fixed so that the longitudinal direction thereof coincides with the axial direction of the push-up arm 31. The other end of the connecting pin 46 protrudes toward the lock release lever 47 and is loosely fitted in the recess 48 of the lock release lever 47. The bearing support plate 50 is covered with a bearing cover 53 for protecting the bearing 49 and the bearing support slot 51.
[0017]
As shown in FIG. 5, a swinging hole 62 is formed at a portion where the push-up arm 31 protrudes from the control box 30 to move the push-up arm 31 up and down and swing. In order to prevent rain from entering from the swinging hole 62, a rubber shaft cover 63 is slidably fitted to the push-up arm 31, and a sliding groove is formed on both sides of the skirt portion 64 of the shaft cover 63. 65 is formed, and the sliding groove 65 slides while being fitted into the swinging hole 62.
[0018]
FIG. 6 shows a control electric circuit diagram. For example, if the right control box 30 in FIG. 1 is the main driving side, this control circuit is the main driving side control circuit 70a, and the left control box 30 in FIG. Then, this control circuit is referred to as a driven side control circuit 70b. The main drive side control circuit 70 a and the driven side control circuit 70 b are connected in parallel to the common contacts 71, 72, 73, 74.
The details of the main drive side control circuit 70a and the follower side control circuit 70b will be described below. The commercial power supply 66 is connected to the geared motor 32 via the breaker 37. If the geared motor 32 is a capacitor type having a capacitor 67, an ascending contact 68 and a descending contact 69 are inserted between both ends of the capacitor 67 and the commercial power source 66.
The commercial power supply 66 is connected to a power supply circuit 79 for obtaining a predetermined DC voltage. The power supply circuit 79 is connected to the excitation coil 77, the upper limit switch 44, and the ascending button 33 via a stop button 35. And a DC circuit comprising an exciting coil 78, a lower limit switch 45, and a lowering button 34 are connected in parallel with each other, and a self-holding contact 75 is connected in parallel with the main arm 13, and the lowering button 34 A self-holding contact 76 is connected in parallel.
Note that the ascending button 33 and the ascending button 33b, and the descending button 34 and the descending button 34b in the main driving side control circuit 70a and the driven side control circuit 70b are interlocked.
[0019]
The automatic opening / closing operation with the above circuit configuration will be described.
(1) Open (Up) When the gate body 10 is fully closed (down), the lower limit switch 45 is pushed open by the arm 41, but the upper limit switch 44 is closed because it is not pushed.
Here, when the raising button 33 of the control box 30 is pressed, the exciting coil 77 is excited, the raising contact 68 and the self-holding contact 75 are closed, and the self-holding contact 75 is closed, whereby the exciting coil 77 is self-held. When the ascending contact 68 is closed, the geared motor 32 rotates counterclockwise in the main drive side control circuit 70a shown in FIG. 2 (however, it rotates rightward in the driven side control circuit 70b not shown). With the rotation of the geared motor 32, the sprocket 43 and the arm 41 are integrally rotated to the left via the drive shaft 36, the sprocket 38, and the chain 39. The lower limit switch 45 is closed by turning the arm 41 to the left, but the operation is not relevant while the lowering button 34 is open.
[0020]
In FIG. 2, when the axis of the sliding shaft 17 is P, the axis of the rotary main shaft 40 is Q, and the axis of the support shaft 42 is R, the ascending direction of the sliding shaft 17 is started when the arm 41 starts to rotate. The support shaft 42 moves in a substantially right angle direction. This, combined with the fact that the bearing 49 is fitted in the bearing support slot 51 with a gap, does not apply a load for raising the gate body 10 immediately when the geared motor 32 is started. The large torque at the start of the motor 32 is reduced as much as possible. When the arm 41 rotates to a certain angle, the bearing 49 comes into close contact with the inner wall of the bearing support long hole 51 and raises the sliding shaft 17 along the guide long hole 20 via the push-up arm 31. As the sliding shaft 17 is raised, the auxiliary arm 14 is also raised, so that the main arm 13 rotates to the right with the rotating main shaft 16 as a fulcrum, and the gate body 10 begins to open.
[0021]
When the arm 41 and the sprocket 43 are rotated 180 degrees, the support shaft 42 reaches a substantially uppermost position, and the sliding shaft 17 moves to the uppermost position of the guide long hole 20. Thereby, the gate main body 10 is completely opened as shown by a chain line in FIG. When the rotation of the arm 41 exceeds 180 degrees and contacts the upper limit switch 44, the contact is opened. When the upper limit switch 44 is opened, the self-holding of the exciting coil 77 is released, the contact between the ascending contact 68 and the self-holding contact 75 is opened, and the geared motor 32 is stopped.
[0022]
(2) When closed (down)
Since the lower limit switch 45 is closed by the left rotation of the arm 41, when the lowering button 34 is pressed, the exciting coil 78 is excited, the lowering contact 69 and the self-holding contact 76 are closed, and the exciting coil 78 is self-held. When the descending contact 69 is closed, the geared motor 32 rotates clockwise in the main drive side control circuit 70a shown in FIG. 2 (however, it rotates left in the driven side control circuit 70b not shown). With the rotation of the geared motor 32, the sprocket 43 and the arm 41 are integrally rotated to the right through the drive shaft 36, the sprocket 38, and the chain 39.
[0023]
As described above, at the beginning of the rotation of the arm 41, the support shaft 42 moves in a direction substantially perpendicular to the descending direction of the sliding shaft 17, and the bearing 49 is fitted into the bearing support long hole 51 with a gap. In combination with this, the large torque at the start of the geared motor 32 is reduced as much as possible. When the arm 41 further rotates, the bearing 49 comes into close contact with the inner wall of the bearing support long hole 51 and lowers the slide shaft 17 along the guide long hole 20 via the push-up arm 31. As the sliding shaft 17 descends, the main arm 13 rotates counterclockwise and the gate body 10 begins to close.
[0024]
When the arm 41 and the sprocket 43 are rotated by 180 degrees, the support shaft 42 reaches substantially the lowest part, and the sliding shaft 17 moves to the lowest part of the guide long hole 20. Thereby, the gate main body 10 is completely closed as shown by the solid line in FIG. When the rotation of the arm 41 exceeds 180 degrees and contacts the lower limit switch 45, the contact is opened, the self-holding of the exciting coil 78 is released, the contact of the descending contact 69 and the self-holding contact 76 is opened, and the geared motor 32 is Stop.
[0025]
(3) When stopping halfway When the stop button 35 is pressed in the middle of opening or closing the gate body 10, the excited excitation coil 77 or excitation coil 78 is demagnetized, and the ascending contact 68 or descending contact 69 is opened and the geared. The motor 32 stops.
If the gate body 10 and the coil spring 21 are balanced, the gate body 10 remains open halfway. If the gate body 10 is heavy, it closes slowly, and if the coil spring 21 is strong, the gate body 10 opens slowly.
[0026]
(3) When automatic opening / closing cannot be performed due to a power failure during manual opening / closing or other electrical circuit failure, the gate body 10 is lifted and closed, or the gate body 10 is pulled down and closed.
Here, as shown in FIG. 2, the position of the lower limit switch 45 is set so that the straight line connecting PR rotates to the left side of the curve connecting PQ and stops.
If the gate main body 10 is lifted by hand in this state, the geared motor 32 is hardly loaded, so that the arm 41 and the sprocket 43 try to rotate to the right in the drawing by lifting the push-up arm 31. Therefore, the lower limit switch 45 acts as a stopper, the raising of the push-up arm 31 is prevented, the gate body 10 cannot be opened, and acts as a manual opening / closing lock mechanism.
[0027]
Therefore, when the lock release lever 47 serving as a manual opening / closing lock release mechanism is turned and rotated counterclockwise in the figure, the recess 48 engages with the connecting pin 46 and the arm 41 and the sprocket 43 rotate counterclockwise in the figure to connect PR. The straight line moves from the straight line connecting PQ to the right side in the figure. Since the bearing 49 is loosely fitted in the bearing support long hole 51, it moves easily.
When the gate main body 10 is lifted by hand in this state, the arm 41 and the sprocket 43 are rotated counterclockwise in the drawing by raising the push-up arm 31, and the push-up arm 31 is raised. Since the geared motor 32 is hardly loaded, the gate body 10 can be easily opened.
The same applies when the gate body 10 is manually closed.
[0028]
In the above embodiment, the geared motor 32 is rotated in the forward direction and the reverse direction when the gate body 10 is opened and closed, and the stop position is over 180 degrees. Thus, it is possible to provide a lock function during manual opening and closing.
However, in the case where only automatic opening / closing is performed without providing a lock function at the time of manual opening / closing, the sprocket 43 is opened by the first 180 degree rotation and closed by the next 180 degree rotation. You can also.
[0029]
In the above embodiment, the control box 30 is attached to each of the two columns 11, but when the gate body 10 is light or the geared motor 32 has a large torque, it may be attached to only one of them. Good.
[0030]
【The invention's effect】
In the present invention, as described above, the push-up arm 31 for rotating the main arm 13 is connected to the connecting position of the auxiliary arm 14 on the column 11 side so as to advance and retreat, and the other end of the push-up arm 31 is connected to the motor. Since it is configured to move up and down by 32 rotations, it can be opened and closed automatically only by adding a simple device. Further, even when the power supply is shut off or the automatic opening / closing device fails, the automatic opening / closing device can be opened and closed reliably by being connected.
[0031]
In the rotational connection between the push-up arm 31 and the arm 41, the bearing 49 provided in either one is loosely fitted in the bearing support long hole 51 provided in the other. Combined with the movement of the support shaft 42 in a substantially right angle direction with respect to the ascending direction and the fact that the bearing 49 is fitted in the bearing support long hole 51 with a gap, the gate is immediately opened when the geared motor 32 is started. A load for raising the main body 10 is not applied, and a large torque at the start of the geared motor 32 can be reduced as much as possible. Further, it is possible to absorb a slight shift in the existing mounting position.
[0032]
The push-up arm 31 is advanced by a half rotation in one direction of the arm 41 by the motor 32, the push-up arm 31 is moved out by a half rotation in the other direction of the arm 41 by the motor 32, and slightly exceeds each half rotation at the time of advancement and retraction. Since the upper limit switch 44 and the lower limit switch 45 serving as a manual open / close lock mechanism are disposed at the positions, the upper limit switch 44 or the lower limit switch 45 acts as a stopper, and the raising or lowering of the push-up arm 31 is prevented, and the gate The main body 10 cannot be opened or closed, and can act as a manual open / close lock mechanism.
[0033]
When the gate body 10 is opened and closed and closed, the geared motor 32 is rotated in the forward direction and the reverse direction, and the stop position is set at a point exceeding 180 degrees, thereby manually opening and closing. A time lock function can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of an automatic gate opening and closing device according to the present invention.
FIG. 2 is a front view of a control box 30 which is a main part of an automatic opening / closing device for a gate according to the present invention.
3 is a cross-sectional view seen from the side showing a connecting portion between a push-up arm 31 and an arm 41 in FIG. 2;
4 is a partially cutaway front view of FIG. 3 with the bearing cover 53 removed. FIG.
5 is a perspective view in which a push-up arm 31 in FIG. 2 is partially cut away from a portion protruding from a control box 30. FIG.
FIG. 6 is a control electric circuit diagram of the automatic gate opening and closing device according to the present invention.
FIG. 7 is a front view of the gate opening / closing device that is manually opened and closed, with the column 11 cut away.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Gate main body, 11 ... Post, 12 ... Standing arm, 13 ... Main arm, 14 ... Auxiliary arm, 15 ... Door support shaft, 16 ... Rotation main shaft, 17 ... Sliding shaft, 18 ... Lever, 19 ... Link, 20 DESCRIPTION OF SYMBOLS: Guide long hole, 21 ... Coil spring, 22 ... Spring mandrel, 23 ... Connection shaft, 24 ... Spring receiving plate, 25 ... Receiving seat, 26 ... Spring flange, 27 ... Lever support shaft, 28 ... Lever rotation shaft, 29 ... Post cap, 30 ... Control box, 31 ... Push-up arm, 32 ... Geared motor, 33 ... Up button, 34 ... Down button, 35 ... Stop button, 36 ... Drive shaft, 37 ... Breaker, 38 ... Sprocket, 39 ... Chain , 40 ... Rotating spindle, 41 ... Arm, 42 ... Support shaft, 43 ... Sprocket, 44 ... Upper limit switch, 45 ... Lower limit switch, 46 ... Connecting pin, 47 ... Lock release lever, 48 ... Recess DESCRIPTION OF SYMBOLS 49 ... Bearing, 50 ... Bearing support plate, 51 ... Bearing support long hole, 52 ... Bearing cover, 53 ... Bearing cover, 54 ... Shaft hole, 55 ... Bolt, 56 ... Washer, 57 ... Bearing, 58 ... Flange, 59 ... Bolt 60 ... Bolt 61 ... Washer 62 ... Swing hole 63 ... Shaft cover 64 ... Bottom part 65 ... Sliding groove 66 ... Commercial power supply 67 ... Capacitor 68 ... Ascending contact 69 ... Decreasing contact , 70a ... main drive side control circuit, 70b ... driven side control circuit, 71, 72, 73, 74 ... contact, 75, 76 ... self-holding contact, 77, 78 ... exciting coil, 79 ... power supply circuit, 80 ... main drive side circuit , 81 .. Driven side circuit.

Claims (4)

One end of the main arm and the auxiliary arm gates body rotatably connected to the other end of the main arm rotatably connected to a rotary spindle to the strut, the other end of the auxiliary arm in said post rotatably connected to the vertical motion, the switchgear of gates which is adapted to open and close the gates body as a fulcrum the rotary spindle in the post side of the main arm, the coupling position of the auxiliary arm in the post-side the one end of the push-up arm for rotating the main arm connected retractably and rotatably, the other end of the push-up arm, and rotatably connected to one end of the arm to advance and retract the push-up arm, other arm the end, it connects the motor to rotate the arm, the rotary coupling of the push-up arm and said arm is loosely fitted a bearing provided on one the bearing support long hole formed in the other this Automatic opening and closing device of gates according to claim. The rotary coupling of the push-up arm and said arm, Yu a bearing provided on the support shaft which is fixed to one end of said arm, a long bearing support slot in the axial direction of the push-up arm which is provided at the other end of the push arm The automatic opening and closing device for a gate according to claim 1, wherein the gate is automatically fitted. Is advanced to the push-up arm in a semi-rotation in one direction of the arm by the motor, the push-up arm is exits, and, beyond a little from each half rotation during forward and backward in the other direction of the half rotation of the arm by the motor 3. The automatic opening / closing device for a gate according to claim 2, wherein an upper limit switch and a lower limit switch that also function as a manual opening / closing lock mechanism are arranged at a predetermined position. And wherein said a connecting position of the push-up arm and the arm, be provided with a lock release lever as a mechanism for releasing the manual opening and closing the lock back to a position which does not exceed the respective slightly beyond the position from the half rotation during forward and backward The automatic opening and closing device for a gate according to claim 3 .

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