JP4220346B2 - Gate bar opening and closing device - Google Patents

Description

  The present invention relates to a gate bar opening / closing device.

  A gate bar opening and closing device provided in a parking lot or the like is configured to open and close a gate bar by transmitting the power of a motor to a drive shaft of the gate bar via a link mechanism (see, for example, Patent Document 1).

JP 2003-27434 A

  However, as shown in FIG. 8, the key 3 and the key grooves 4a and 4b are conventionally used to fix the link 1 of the link mechanism to the drive shaft 2 of the gate bar, and the key grooves 4a and 4b are used for opening the gate bar to the right. There are two types, one for setting and one for setting for left opening. For this reason, there exists a problem that the intensity | strength of the drive shaft 2 or the link 1 falls. In particular, when the closed gate bar is forcibly opened, there is a problem that the connecting portion between the drive shaft 2 and the link 1 is likely to be deformed.

  Further, as shown in FIG. 8, conventionally, in order to stop the gate bar at the open position and the closed position, two limit switches 6 and 7 are attached to the column 5 that supports the drive shaft 2, and the limit switch 6 is connected to the link 1. , 7, the single operation piece 8 is fixed, so the positions of the roller 9 a at the tip of the lever 9 and the two operation portions 8 a, 8 b of the operation piece 8 in the two limit switches 6, 7. The work of adjusting the relationship is cumbersome.

  Therefore, an object of the present invention is to provide a gate bar opening and closing device that can solve the above-mentioned problems.

In order to solve the above-mentioned problem, the invention according to claim 1 transmits the power of the power source (16) via the link mechanism (18) and rotates the drive shaft (13) of the gate bar (14) by 90 degrees . in gate bar closing device for opening and closing the gate bar by the axial end of the drive shaft is formed as a square shaft having a regular quadrangular prismatic section (13a), the shape of the square shaft is formed in the link of the link mechanism Then, one of the diagonal lines is fitted into a square hole (22a) formed so as to be parallel to the long side of the link (22) and located on the center line of the link, and the one of the diagonal lines of the square hole is A slit groove (34) is formed on an extended line extending to the end of the short piece side of the link, and is tightened by a fastening screw that is screwed into a female screw formed on one of the split pieces sandwiching the slit groove , Opening the gate bar The square shaft when changing the direction right-opening and left opening, employing the gate bar closing apparatus capable of changing by 90 degrees rotation removed from the link.

  In the invention according to claim 2, the power of the power source (16) is transmitted to the drive shaft (13) of the gate bar (14) via the link mechanism (18), and the link (22) of the link mechanism (18). In the gate bar opening and closing device in which each position detection sensor (25, 26) is operated by two operation portions that rotate integrally with each other to stop the gate bar (14) at the open / close position, the two operation portions are divided into two. The operation pieces (28, 29) are divided and formed, and these two operation pieces (28, 29) are overlapped, and both operation pieces (28, 29) are driven to the drive shaft (13) or the link (22). Insertion holes (39, 40) formed in the respective operation pieces (28, 29) so as to be supported by the fulcrum pins (30) matching the axial center of (13) and to bend with the same curvature around the fulcrum pins (30). And escape groove (41, 42) Each operation piece (28, 29) is fixed to the drive shaft (13) or the link (22) through a set screw (37, 38) through (39, 40), and one operation piece (28 or 29) is attached. A gate bar opening / closing device is adopted in which the head (37b or 38b) of the set screw (37 or 38) to be fixed is released into the escape groove (42 or 41) of the other operation piece (29 or 28).

According to the first aspect of the present invention , the tightening means is loosened, the link (22) is removed from the angular shaft (13a) of the drive shaft (13), the drive shaft (13) is rotated, and then the angular shaft (13a) is renewed. ), The gate bar (14) can be freely changed between right and left by simply inserting the link (22), and without providing the key (3) and the key groove (4a, 4b). Since the link (22) can be fixed to the shaft end, the strength of the connecting portion between the link (22) and the shaft end is improved, and even when the gate bar (14) is forcibly opened and closed, it is difficult to deform. .

  According to the invention of claim 2, the power of the power source (16) is transmitted to the drive shaft (13) of the gate bar (14) via the link mechanism (18), and the link (22) of the link mechanism (18). In the gate bar opening and closing device in which each position detection sensor (25, 26) is operated by two operation portions that rotate integrally with each other to stop the gate bar (14) at the open / close position, the two operation portions are divided into two. The operation pieces (28, 29) are divided and formed, and these two operation pieces (28, 29) are overlapped, and both operation pieces (28, 29) are driven to the drive shaft (13) or the link (22). Insertion holes (39, 40) formed in the respective operation pieces (28, 29) so as to be supported by the fulcrum pins (30) matching the axial center of (13) and to bend with the same curvature around the fulcrum pins (30). And escape groove (41, 42) Each operation piece (28, 29) is fixed to the drive shaft (13) or the link (22) through a set screw (37, 38) through (39, 40), and one operation piece (28 or 29) is attached. Since the head (37b or 38b) of the set screw (37 or 38) to be fixed is released into the escape groove (42 or 41) of the other operation piece (29 or 28), the set screw (37, 38) is used. ) And the fulcrum pin (30) as a fulcrum to rotate the operation pieces (28, 29), the screw shafts (37a, 38a) of the set screws (37, 38) and the insertion holes (39, 40) are relatively The head (37b or 38b) of the set screw (37 or 38) of one operation piece (28 or 29) and the relief groove (42 or 41) of the other operation piece (29 or 28). It will slide relatively, both operation pieces ( 8 and 29) can be adjusted position relative to one another independently of the position detection sensor (25, 26). Therefore, the adjustment work of the open position and the closed position of the gate bar (14) is simplified and speeded up.

  The best mode for carrying out the invention will be described below with reference to the drawings.

  As shown in FIG. 1, the gate bar opening / closing device is provided, for example, in a passage 10 between a parking lot and a general road. The drive unit and the like of the switchgear are arranged on a base 11 provided on the road side, and the whole is covered with a case 12. A drive shaft 13 protrudes from the case 12 in a cantilevered manner, and a gate bar 14 that opens and closes the passage 10 is fixed to the drive shaft 13. The gate bar opening / closing device blocks the passage 10 by tilting the gate bar 14 to the solid line position, and opens the passage 10 by raising the gate bar 14 to the two-dot chain line position.

  As shown in FIGS. 2 to 4, the gate bar opening and closing device is fixed so as to be orthogonal to the drive shaft 13, a column 15 as a frame rising from the base 11, a drive shaft 13 supported horizontally on the column 15. A gate bar 14 for opening and closing the formed passage 10 (see FIG. 1), a motor 16 attached to the column 15, and a link mechanism 18 for transmitting torque from the motor 16 to the drive shaft 13 via the speed reducer 17. ing. The motor 16 and the speed reducer 17 function as a power source. As a power source, a hydraulic device, a pneumatic device, or the like can be used in addition to the motor 16.

  The column 15 is formed of a square tube steel material, and stands vertically on the base 11. A drive shaft 13, a motor 16 and a speed reducer 17 are attached to the column 15, and the whole is covered with a case 12.

  The drive shaft 13 is horizontally supported on the upper portion of the column 15 via a bearing 19 so as to be rotatable. The tip of the drive shaft 13 protrudes out of the case 12, and the gate bar 14 is fixed in a cantilevered manner so that the gate bar 14 is orthogonal to the drive shaft 13 at the protruding portion. The rear end of the drive shaft 13 remains in the case 12, and a link mechanism 18 serving as a transmission mechanism is connected thereto.

  The motor 16 and the speed reducer 17 that are power sources may be separate, but are preferably configured integrally as a geared motor, and are the middle part of the column 15 and the surface from which the rear end of the drive shaft 13 protrudes. It is fixed on the top via a bracket 20. The rotation of the output shaft of the motor 16 is decelerated by the speed reducer 17 and then output from the output shaft 17 a of the speed reducer 17.

  The link mechanism 18 is a lever crank mechanism in the illustrated example, and includes a first link 21 fixed to the output shaft 17a of the speed reducer 17, a second link 22 fixed to the drive shaft 13, a first and a first link. The connecting rod 23 connects the two links 21 and 22 and the column 15 supports the first and second links 21 and 22.

  One end of the first link 21 is fixed to the output shaft 17a of the speed reducer 17, and the other end is connected to one end of the connecting rod 23 via a universal joint 24 such as a ball joint. The output shaft 17a of the speed reducer 17 integrated with the motor 16 can be rotated forward and backward within a range of approximately 180 degrees. When the output shaft 17a rotates 180 degrees in one direction, the first link 21 is connected to the output shaft as shown in FIG. Rotates to a position indicated by a solid line that stands substantially vertically on 17a and stops. The position of the first link 21 corresponds to the closed position where the gate bar 14 blocks the passage 10. When the output shaft 17a rotates 180 degrees in the opposite direction from that position, the first link 21 rotates to a position indicated by a two-dot chain line that hangs substantially vertically below the output shaft 17a and stops. The position of the first link 21 corresponds to the open position where the gate bar 14 opens the passage 10.

  As shown in FIG. 4, rotation / stop and forward / reverse switching of the motor 16 are controlled using limit switches 25 and 26 that are position detection sensors installed on the rotation path of the second link 22. Of course, the sensor as the switching means of the motor 16 may be arranged with respect to another link.

  One end of the second link 22 is fixed to the rear end of the drive shaft 13, and the other end is connected to one end of the connecting rod 23 via a universal joint 27 such as a ball joint. When the reciprocating rotational motion of the first link 21 is converted into the reciprocating rotational motion of the second link 22 by the connecting rod 23, and the first link 21 is rotated to the position indicated by the solid line in FIG. The second link 22 rotates to the solid line position shown in FIG. 2, and the gate bar 14 rotates to the horizontal position which is the closed position as shown in FIGS. When the first link 21 is rotated to the position indicated by the two-dot chain line in FIG. 3, the second link 22 is rotated to the position indicated by the two-dot chain line in FIG. As shown in FIG. 2, the passage 10 is opened by rotating to a vertical position which is an open position.

  In the illustrated example, the gate bar 14 is opened to the right. However, the gate opening / closing device is configured so that the gate bar 14 can be easily changed to the left opening.

  That is, as shown in FIGS. 2 and 4, the shaft end of the drive shaft 13 is formed as an angular shaft 13 a having a regular polygonal cross section, and this angular shaft 13 a is formed at the rear end of the second link 22. It fits into the square hole 22a and is tightened by tightening means.

  As shown in FIG. 5, more specifically, the shaft end of the drive shaft 13 is formed as a square shaft 13a having a regular square cross section, and each edge thereof is preferably chamfered. The axial end is not limited to a regular quadrilateral cross section, and is preferably an angular axis of a polygonal cross section of an integral multiple of 4 such as a regular octagon or a regular dodecagon. A screw hole 31 into which a fulcrum pin 30 that supports operation pieces 28 and 29 described later is screwed is formed on the end surface of the drive shaft 13. In addition, the drive shaft 13 is formed with a hole 32 for inserting the base end of the gate bar 14, a through hole 33 for guiding the cord to the power supply side when the bar break detection is attached to the gate bar 14, and the like.

  As shown in FIG. 6, the square hole 22 a of the second link 22 is formed as a substantially square hole into which the square axis 13 a of the drive shaft 13 can be fitted. The square hole 22a is formed in a shape corresponding to the cross-sectional shape of the drive shaft 13, and is preferably formed in a polygon that is an integral multiple of 4 such as a regular octagon, a regular dodecagon, or the like.

  As described above, the shaft end of the drive shaft 13 is the square shaft 13a having a regular polygonal cross section, and the shaft hole of the second link 22 is the square hole 22a. After removing 22 and rotating the drive shaft 13, the gate bar 14 can be freely changed between the right opening and the left opening simply by inserting the second link 22 into the square shaft 13 a again. Further, since the second link 22 can be fixed to the shaft end without providing the conventional key 3 and key grooves 4a and 4b shown in FIG. 8, the connecting portion between the second link 22 and the drive shaft 13 is provided. Even when the gate bar 14 is forcibly opened and closed, it is difficult to deform.

  As shown in FIGS. 4 and 6, the tightening means includes a slot groove 34 formed in the second link 22 so as to communicate with the square hole 22a which is a shaft hole, and a second slot so as to narrow the slot groove 34. And a fastening screw 35 inserted into the link 22. A female screw 36 into which a male screw of the tightening screw 35 is screwed is formed in a hole into which the tightening screw 35 is inserted in one of the split pieces sandwiching the slit groove 34 of the second link 22.

  When the square shaft 13a of the drive shaft 13 is inserted into the square hole 22a and the tightening screw 35 is screwed with respect to the female screw 36, the split pieces of the second link 22 are constricted with the slot 34 interposed therebetween. By tightening the angular shaft 13 a of the shaft 13, the second link 22 is fixed to the drive shaft 13. To change the gate bar 14 from right opening to left opening, loosen the tightening screw 35, remove the second link 22 from the drive shaft 13, and rotate the drive shaft 13 by 90 degrees clockwise in FIG. This is done by inserting the square shaft 13a of the drive shaft 13 into the square hole 22a of the second link 22 in the same posture and screwing it again. The output of the motor 16 is transmitted to the gate bar 14 via the link mechanism 18 in the same manner as in the case of right opening, and the gate bar 14 opens to the left and opens and closes the passage on the opposite side to that in the case of right opening.

  As shown in FIG. 4, the gate bar 14 is stopped at the open / closed position by operating the limit switches 25 and 26 by two operation portions that rotate together with the second link 22. .

  The two operation parts are divided into two operation pieces 28, 29, and these two operation pieces 28, 29 are applied to the front surface of the second link 22 in a state of being overlapped, and are driven to the end face of the drive shaft 13. It is supported by a fulcrum pin 30 that matches the axis of the shaft 13. The fulcrum pin 30 is screwed into a screw hole 31 formed in the drive shaft 13.

  The two operation pieces 28 and 29 may have different shapes, but are preferably attached to the second link 22 with the same shape shown in FIG. As shown in FIGS. 4 and 7, the operation pieces 28 and 29 have insertion holes 39 and 40 through which the screw shafts 37 a and 38 a of the set screws 37 and 38 are bent so as to be bent with the same curvature around the fulcrum pin 30. And the escape grooves 41 and 42 which let the head parts 37b and 38b of the set screws 37 and 38 pass are formed. That is, as shown in FIG. 7, the operation pieces 28 and 29 are provided with insertion holes 39 and 40 and relief grooves 41 and 42 adjacent to each other on an arc centering around the shaft hole 43 through which the fulcrum pin 30 passes. Desirably, the insertion holes 39 and 40 are formed as closed elongated holes, and the clearance grooves 41 and 42 are formed as elongated holes with one end open. However, if necessary, the insertion holes are elongated holes and the clearance grooves are formed as holes. It is good also as a closed long hole.

  The operation pieces 28 and 29 are fixed to the second link 22 by set screws 37 and 38 that pass through the insertion holes 39 and 40. The male screws of the screw shafts 37a, 38a of the set screws 37, 38 are screwed into the female screws of the screw holes 44 formed in the second link 22 shown in FIG. In the fixed state of the operation pieces 28 and 29, the heads 37b and 38b of the set screw 37 or 38 for fixing the one operation piece 28 or 29 escape into the escape groove 42 or 41 of the other operation piece 29 or 28. Yes.

  Accordingly, when both the set screws 37, 38 are loosened and the operation pieces 28, 29 are turned with the fulcrum pin 30 as a fulcrum, the screw shafts 37a, 38a of the set screws 37, 38 and the insertion holes 39, 40 are relatively Thus, the heads 37b, 38b of the set screw 37 or 38 of one operation piece 28 or 29 and the relief groove 42 or 41 of the other operation piece 29 or 28 slide relative to each other. Therefore, both the operation pieces 28 and 29 can be adjusted independently of each other with respect to the limit switches 25 and 26, and the adjustment work of the open position and the closed position of the gate bar 14 is simplified and speeded up.

  In addition, a cam surface having a single curved surface similar to the conventional one can be formed in the operation portion of the operation pieces 28 and 29, but preferably, the shaft hole 43 is centered as shown in FIG. A first cam surface 45 having a curvature radius R1 and a second cam surface 46 having a curvature radius R2 (R2> R1) centering on a shaft hole 43 connected to the first cam surface 45 are formed. By making the surface from the curved surface of R1 to the curved surface of R2 into a steeply inclined surface, even if the roller 47a of the lever 47 of the limit switches 25 and 26 is not completely pushed by the first cam surface 45, the next second cam The motor 46 can be reliably stopped and the gate bar 14 can be stopped at the closed position which is the horizontal position or the open position which is the vertical position.

  Next, the operation of the gate bar opening / closing device having the above configuration will be described.

  When the gate bar 14 is rotated from the closed position shown by the solid line in FIGS. 1 and 2 to the open position shown by the two-dot chain line to open the gate, the motor 16 rotates in one direction, and the first link 21 is shown in FIG. 3, it rotates approximately 180 degrees from the solid line position to the two-dot chain line position in the direction of arrow a.

  When the first link 21 rotates to the position, the cam portions 45 and 46 that are operation portions of the operation piece 29 come into contact with the roller 47a of the limit switch 26, and the motor 16 is stopped by a signal from the limit switch 26. As a result, the gate bar 14 stops at the vertical position and opens the gate.

When the gate bar 14 is rotated from the open position shown by the two-dot chain line in FIGS. 1 and 2 to the closed position shown by the solid line to close the gate, the motor 16 rotates in the other direction, and the first link 21 is shown in FIG. 3, it rotates approximately 180 degrees in the direction of arrow b from the two-dot chain line position to the solid line position. When the first link 21 rotates to the position, the other operation piece 28 comes into contact with the roller 47a of the other limit switch 25, and the motor 16 is stopped by a signal from the limit switch 25. As a result, the gate bar 14 stops at the horizontal position and closes the gate.

  Further, in the illustrated example, the gate bar 14 is set to be opened to the right. However, when changing the setting to the left opening, the second link 22 is driven by loosening the tightening screw 35 of the second link 22 in FIG. The shaft 13 is removed from the angular shaft 13a, and the drive shaft 13 is rotated about 90 degrees in the clockwise direction in the drawing to erect the gate bar 14 from the solid line position to the two-dot chain line position.

  Next, the second link 22 is applied to the square shaft 13a of the drive shaft 13 in the same posture, and the square shaft 13a is inserted into the square hole 22a. Therefore, the tightening screw 35 is tightened again to fix the second link 22 to the drive shaft 13. In this state, the gate bar 14 maintains the open position, and the first link 21 and the connecting rod 23 are in the solid line position in FIG. Thereby, when the motor 16 rotates and the first link 21 is rotated from the solid line position to the two-dot chain line position in the direction of arrow a, the gate bar 14 closes the passage.

  Further, in order to adjust the open position and the closed position of the gate bar 14, the set screws 37 and 38 of both the operation pieces 28 and 29 are loosened, and the operation pieces 28 and 29 are set to either one with the fulcrum pin 30 as a fulcrum. Turn in the direction. The screw shafts 37a, 38a of the set screws 37, 38 and the insertion holes 39, 40 slide relative to each other, and the head 37b or 38b of the set screw 37 or 38 of the one operation piece 28 or 29 and the other operation piece 29. Alternatively, since the 28 escape grooves 42 or 41 slide relative to each other, both the operation pieces 28 and 29 rotate independently while being overlapped. By the rotation of the operation pieces 28 and 29, the cam surfaces 45 and 46, which are operation portions, change the positions with respect to the rollers 47a of the limit switches 25 and 26. After the position adjustment of the operation pieces 28 and 29, the operation pieces 28 and 29 are fixed to the second link 22 by tightening the set screws 37 and 38 again.

  Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments.

It is a perspective view of the gate bar opening and closing device according to the present invention. It is a rear view which removes and shows the case, operation piece, and limit switch of a gate bar opening and closing device. It is a left view which removes and shows the case, operation piece, and limit switch of a gate bar opening and closing device. It is an enlarged view of the principal part of the gate bar opening / closing device according to the present invention. (A), (B), (C) is a plan view, a front view, and a right side view of the drive shaft, respectively. (A), (B) is each a partially notched front view and horizontal sectional view of the link fixed to a drive shaft. It is a front view of a switch cam. It is a figure similar to FIG. 4 which shows the principal part of the conventional gate bar opening / closing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 13 ... Drive shaft 13a ... Square shaft 14 ... Gate bar 16 ... Motor 18 ... Link mechanism 22 ... Second link 22a ... Square hole 25, 26 ... Limit switch 28, 29 ... Operation piece 30 ... Supporting pin 37, 38 ... Set screw 37a, 38a ... Screw shaft 37b, 38b ... Head 39, 40 ... Insertion hole 41, 42 ... Relief groove

Claims (2)

In the gate bar opening and closing device that transmits the power of the power source through the link mechanism and opens and closes the gate bar by rotating the drive shaft of the gate bar by 90 degrees ,
Is formed as a square shaft to a shaft end of the drive shaft has a positive four rectangular cross-section, the same shape of the square shaft is formed in the link of the link mechanism, parallel to the long sides of one of the diagonal links, And a slot is formed on an extension line that is fitted into a square hole formed so as to be positioned on the center line of the link, and extends to the short side end of the one diagonal line of the square hole. When the gate bar opening / closing direction is changed from right to left to open to the left, the square shaft is removed from the link. A gate bar opening and closing device characterized in that it can be changed by turning 90 degrees .   The power of the power source is transmitted to the drive shaft of the gate bar via the link mechanism, and each position detection sensor is operated by two operation parts that rotate integrally with the link of the link mechanism to stop the gate bar at the open / closed position. In the gate bar opening / closing apparatus, the two operation parts are divided into two operation pieces, the two operation pieces are overlapped, and the two operation pieces are aligned with the drive shaft or the link to the axis of the drive shaft. Among the insertion holes and escape grooves formed in each operation piece so as to be bent with the same curvature around the fulcrum pin as a center, the operation pieces are fixed to the drive shaft or the link through a set screw in the insertion hole. A gate bar opening and closing device characterized in that a head of a set screw for fixing one operation piece is allowed to escape into a relief groove of the other operation piece.

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