JP2007002607A - Hinge device and automatic collapsible lifting gate with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hinge device excellent in durability and capable of reducing friction loss and noise as little as possible and maintaining a smooth operation for a long period of time, and also an automatic collapsible lifting gate provided therewith. <P>SOLUTION: A bearing part 12 is formed by bending one end of a wire material 11 into a ring shape while a mounting part 13 is provided for attaching to the first member 8 or the second member 9. The hinge body 10 is pivotally attached with shaft body 14, so that the first member 8 and the second member 9 are connected rotatably to each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hinge device that can suppress friction loss as much as possible, and a foldable automatic lifting gate provided in an entrance / exit passage of a building or facility.

At the entrance / exit of the monthly parking lot, a chain gate that raises and lowers the chain and closes / opens the passage is often used, but in recent years, on-vehicle vandalism frequently occurs in the parking lot.
In particular, in underground parking lots of condominiums that are difficult for humans to reach, there is a lot of demand for replacement with automatic gates, which tend to be strong and can restrict people from entering and exiting.
However, there are problems in the installation space of the gate, both in the horizontal opening and closing system and in the door-opening system, and there are problems of cost increase due to large-scale construction, noise and vibration during operation, and the like.

  On the other hand, as a folding shutter that moves up and down, a large number of panels made of aluminum or fitted with a glass plate in a quadruple cage are connected via a hinge frame so as to be rotatable, and at the lower end as a running rod. The end slats are connected in the same way, with doors protruding from both sides of the center of each panel in the width direction and both ends of the end slats, while the suspension arms protruding from both ends of the end slats are wired. It has been proposed to lift and unwind the wire with a coil spring to guide the door to the side frame, and to open and close the side frames by simultaneous bellows-like extension folding. (For example, refer to Patent Document 1).

In such a foldable shutter, the hinge for pivotally connecting the panels adopts a double cylinder structure or a conventional hinge structure in which a cylindrical bracket is rotatably connected by a core rod. However, since this type of gate that folds a plurality of panels uses many hinges, friction loss and noise caused by the hinge portions cannot be ignored.
In particular, in a folding gate that moves up and down, the connecting hinge not only functions to be pivotally connected, but also has a function to push and pull while lifting while supporting the weight of each panel. In order to maintain proper operation, it must have strength and durability to withstand long-term operation, and it is inevitable to increase the size of the hinges or increase the number of hinges used. The problem of friction loss and noise is also increased accordingly.

Japanese Patent Publication No. 8-6538

  Therefore, in view of the above-described situation, the present invention intends to solve a hinge device excellent in durability that can reduce friction loss and noise as much as possible and can maintain smooth operation for a long period of time, and a folding device including the hinge device. It is to provide an automatic lift gate of the type.

  As a result of intensive studies to solve the above-mentioned problems, the present inventor has found that the conventional connecting hinge has the above-mentioned double cylinder structure or the structure in which the cylindrical bracket is connected by the core rod, so that the sliding portion is in surface contact. Since it becomes a state, it is found that friction loss due to friction is large, and particularly in a folding gate that uses a lot of this, the loss accumulates, causing problems such as noise and deterioration in durability, The present invention has been completed.

  That is, the present invention is a hinge device that connects a first member and a second member so as to be rotatable, and forms a bearing portion by bending one end side of a round bar into an annular shape. One hinge body provided with an attachment portion attached to the first member or the second member on the other end side of the round bar is provided at a position corresponding to the first member or the second member, respectively. By attaching two or more attachments, a hinge body attached to the first member, and a shaft body communicating with adjacent bearing portions of the hinge body attached to the second member, the first member and the first member are inserted. A hinge device is characterized in that the second member is connected to the shaft body via the bearing portion so as to be rotatable about the shaft body.

  Here, the bearing parts of the hinge body attached to the second member are positioned between the bearing parts of two or more hinge bodies arranged at a predetermined interval on the first member, and these bearing parts It is preferable to insert a shaft that communicates with the shaft.

  Moreover, it is preferable that the round bar which comprises the said hinge main body is a 10-20 mm diameter stainless steel round bar.

  Further, it is preferable that one end side of the round bar is bent into an annular shape, and a tip end portion thereof is welded to an intermediate portion to constitute a bearing portion.

  Further, according to the present invention, a plurality of divided members extending in the width direction of the passage are arranged vertically, and the upper and lower ends of each adjacent divided member are pivotably connected by the hinge device described above, so that they can be folded up and down. A restricting body is arranged between the left and right support columns standing on the side of the passage, and the division member located at the uppermost part is pivotally supported on the upper part between the support columns so as to be horizontally rotatable, Guide rollers that are guided by guide rails provided on the inner surfaces of the left and right struts are provided at the left and right ends of each split member except for the uppermost split member, and as a lifting means that moves the lowermost split member up and down A foldable automatic raising / lowering gate characterized in that it is connected and provided with a control means for controlling the operation of the raising / lowering means.

  Here, the guide roller is provided at the center of the left and right side ends of each divided member excluding the uppermost and lowermost divided members, and the elevating means is connected to the guide roller shaft portion of the lowermost divided member. Those are preferred.

  In addition, the hinge device is provided with a plate material bracket having a U-shaped cross section for receiving the upper end or lower end of the divided member, and the other end side of one or more hinge bars attached to the divided member on the bracket. Those with fixed are preferred.

  Furthermore, it is preferable that the dividing member is a fence body, and a plurality of hinge devices are provided on each of an upper end frame and a lower end frame of the fence body.

  Further, the elevating means is provided with transmission gears on which an endless connection support made of a chain or a toothed belt is engaged at the upper and lower portions of each column, and the left and right transmission gears are linked to each other. Drive means for driving is provided, and by connecting the guide roller shaft portion of the lowermost split member to each connection support, the lowermost split member is moved up and down integrally with the connection support. What raises and lowers is preferable.

  In addition, the driving means is provided with a horizontal rotation shaft between the upper portions of the columns, the transmission gears are provided on both left and right ends of the rotation shaft, and a motor for rotating the rotation shaft via a chain; What provided the reduction gear in the position below the said rotating shaft is preferable.

  Also, a circuit breaker is provided, and the control means controls the drive of the circuit breaker so that the circuit breaker is opened after the lifting / folding operation of the regulating body is completed, and the lowering operation of the regulating body is started. What closes the said circuit breaker before doing is preferable.

  According to the hinge device of the present invention, the sliding portion between the bearing portions and the sliding portion between the bearing portion and the shaft body are all in point contact or line contact, and friction loss and noise can be minimized. . Further, if the strength of the round bar or the shaft is maintained, durability can be easily improved while suppressing friction, and smooth operation can be maintained even when a large load is applied.

  In addition, the bearing portion of the hinge body attached to the second member is positioned between the bearing portions of two or more hinge bodies arranged at a predetermined interval on the first member, and communicates with these bearing portions. Since the shaft body is inserted, stable operation can be maintained.

  Moreover, since the round bar which comprises a hinge main body is a stainless steel round bar with a diameter of 10-20 mm, sufficient intensity | strength can be maintained.

  In addition, one end side of the round bar is bent into an annular shape, and its tip is welded to the middle part to construct the bearing part. This makes it easy to manufacture and maintains excellent strength, maintaining smooth operation. it can.

Further, according to the folding type automatic elevating gate according to the present invention using the above-described hinge device, the hinge device for connecting the divided members has little friction loss, and the gate can be smoothly opened and closed with a small amount of power. Noise can be reduced.
Further, the regulating body can be efficiently retracted upward, and can be installed in a passage where no space can be taken upward. In particular, there is no need for extra space for the doors like the horizontal gates, and there is no need for large-scale construction such as foundation work or burial work for rail burial, etc. Cost can be reduced. Further, unlike the door-to-door system, a large turning space is not required for opening and closing.

  In addition, since the guide roller is provided at the central portion of the left and right side ends of each divided member excluding the uppermost and lowermost divided members, the lifting means is connected to the guide roller shaft portion of the lowermost divided member. Since the divided members are simultaneously rotated, they can be opened and closed in a relatively short time, and vibration during the opening and closing operation is reduced.

  In addition, the hinge device is provided with a U-shaped cross-sectional plate bracket that receives the upper end or the lower end of the divided member, and the other end side of one or more hinge bodies attached to the divided member is attached to the bracket. Since it is fixed, it is easy to install the hinge device, and the strength of the mounting portion can be maintained.

  In addition, since the dividing member is a fence body and a plurality of hinge devices are provided on each of the upper end frame and the lower end frame of the fence body, the strength of the dividing member is maintained, and an unreasonable force is exerted on the hinge device due to the bending of the dividing member. It can be prevented from acting, friction loss does not occur, and smooth rotation and raising / lowering operations are maintained.

  The elevating means is provided with transmission gears on which an endless connection support made of a chain or a toothed belt is engaged at the upper and lower portions of each column, and the left and right transmission gears are linked to each other and driven. Driving means for connecting the guide roller shaft portion of the lowermost divided member to each of the connecting support members, so that the lowermost divided member is moved up and down integrally with the connecting support member. Therefore, a smooth and reliable lifting operation can be maintained.

  In addition, the driving means is provided with a horizontal rotating shaft between the upper portions of the columns, and the transmission gear is provided on both the left and right ends of the rotating shaft, respectively, and a motor and a speed reducer that rotate the rotating shaft through a chain. Since the machine is provided at a position below the rotating shaft, the drive unit does not need to be provided above the passage, and can be easily installed even in a passage in which no space is available.

  Also, a circuit breaker is provided, and the control means controls the drive of the circuit breaker so that the circuit breaker is opened after the lifting / folding operation of the regulating body is completed, and the lowering operation of the regulating body is started. Since the circuit breaker is closed before the operation, safety is improved.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1A and 1B are explanatory views showing a hinge device according to the present invention, in which FIG. 1A is an exploded perspective view and FIG. 1B is a perspective view showing an assembled state.
1 to 3 show typical embodiments, and FIG. 4 shows a modification. In the figure, reference numeral 1 denotes a hinge device, 10 denotes a hinge body, 11 denotes a shaft body, 12 denotes a bearing portion, 13 denotes a mounting portion, and 14 denotes a shaft body. Respectively.

  As shown in FIGS. 1 and 2, the hinge device 1 of the present invention pivotally attaches hinge bodies 10,... With a shaft body 14, and the first member 8 and the second member are connected via the hinge bodies 10. The member 9 is connected to each other so as to be rotatable.

  The hinge body 10 is formed by bending one end side of the round bar 11 into an annular shape to form a bearing portion 12, and on the other end side of the round bar 11, the first member 8 or the second member 9. An attachment portion 13 to be attached is provided.

  As the round bar 11, a stainless steel round bar having a diameter of 5 to 30 mm is used, and the bearing 12 on one end side is formed by bending the ring into an annular shape and welding its tip part to the middle part, The round bar is formed in a P-shape. The round bar may be oval in addition to the circular cross section. Further, depending on the required strength, a hollow round bar may be used in addition to the round bar, and the diameter and thickness may be set as appropriate. In addition, what was shape | molded with the synthetic resin may be used.

  And one or two or more are attached to the corresponding positions of the first member 8 and the second member 9, respectively, and attached to the hinge body 10 attached to the first member 8 and the second member 9. The first member 8 and the second member 9 are arranged by coaxially arranging the bearing portions 12 and 12 adjacent to each other of the hinge body 10 and inserting the shaft body 14 communicating with the bearing portions 12 and 12. Via the bearings 12, 12, the shaft body 14 is pivotally connected.

  In such a hinge device 1, as can be seen from the sectional view of FIG. 3, the sliding portions a and b between the bearing portions 12 and 12 and the sliding portion c between the bearing portion 12 and the shaft body 14 are both. Point contact or line contact is achieved, friction loss (friction loss) can be minimized, and smooth operation can be obtained even when a large load is applied.

  As the shaft body 14, a center pin that is fastened with a nut is used, but various shaft bodies such as other split pins can be employed. Further, although washers are interposed at both ends of the pin, they may be provided between the bearing portions 12 and 12, or the washers can be omitted.

In this example, the mounting portion 13 is provided with a plate material bracket 15 having a U-shaped cross section for mounting to the first member 8 or the second member 9. Fixed.
When a plurality of hinge main bodies 10 are provided on the first member 8 side as in this example and combined with the hinge main body 10 on the second member 9 side, one plate-like bracket for attaching to the first member 8 15, the other ends of the round bars of the plurality of hinge bodies 10, 10 are welded, and the plate bracket 15 is used in combination as the attachment portion 13 of each hinge body 10.
In addition, you may attach to the 1st member 8 or the 2nd member 9 by direct welding etc. by using the other end part of a round bar as an attachment part, without using brackets other than U-shape or bracket.

  In this example, the bearing portion 12 of one hinge body attached to the second member 9 is interposed between the bearing portions 12 and 12 of the two hinge bodies disposed at a predetermined interval on the first member 8. The shaft body 14 is inserted into the bearing portions 12, 12, 12 so as to be sandwiched, but the hinge device 1 of the present invention is not limited to such a combination form of the hinge body 10. The first member 8 and the second member 9 are each provided with one hinge body 10 and assembled with a shaft body 14, or a plurality of both are provided and assembled on both sides as shown in FIG. Also, as for the way of assembling, as shown in FIG. 4 (a), every other alternating form or a plurality of hinge bodies 10 on one side may be assembled.

  Next, based on FIGS. 5-8, the folding automatic raising / lowering gate comprised using the hinge apparatus 1 which concerns on this invention is demonstrated. In the figure, reference numeral 2 denotes an automatic elevating gate, 3 denotes a regulating body, 4 denotes a support, 5 denotes elevating means, 6 denotes control means, and 30 denotes a dividing member.

  As shown in FIGS. 5 and 6, the folding type automatic elevating gate 2 according to the present invention has a plurality of divided members 30, which extend in the width direction of the passage. The upper end 31 and the lower end 32 are pivotally connected using the above-described hinge device 1,... According to the present invention to constitute a restricting body 3 that can be folded up and down. The split member 30A is disposed between the left and right support columns 4 and 4 which are erected in the direction, and the split member 30A located at the uppermost part is pivotally supported on the upper part between the support pillars so as to be horizontally rotatable, and the split members excluding the uppermost split member 30A. Guide rollers 34 guided by guide rails 40 provided on the inner surfaces of the left and right columns are respectively provided at the left and right ends 33, 33 of the members 30B, 30C, 30D, and the lowermost divided member 30D is moved up and down. It is connected to the means 5 and controls the operation of the lifting means 5. Is characterized by comprising a control means 6 for provided.

  The dividing member 30 constituting the restricting body 3 is made of metal, for example, stainless steel, and upper and lower horizontal bars 35 and 35 extending in the width direction of the passage, and a plurality of spans provided at predetermined intervals between the horizontal bars. It is comprised from the fence body comprised with the vertical fence 36, .... The length, interval, etc. of these recumbent and vertical reeds are appropriately set according to the width and height of the passage, the number of fences, and the like. It should be noted that other than such a fence body, for example, a fence made of a round bar, a panel material, and other regulating members can be adopted.

  And the hinge apparatus 1 is each attached to the predetermined position of the up-and-down side ridge 35 which mutually faces these division members 30A-D, and the left-right side part and the center part in this example, respectively, and the division member 30A adjacent to the upper and lower sides The restricting body 3 is configured by connecting D to D so as to be rotatable.

  The split member 30A is supported at a fixed position by a pivot 37 fixed to the upper part of the support column, and is guided up and down along the guide rail 40 at the center of the left and right ends of the split members 30B, 30C, and 30D. Guide rollers 34, 34, 34A are respectively provided. The pivot 37 and the guide rollers 34, 34A are all located on one vertical line, but at least the guide rollers 34, 34 need only be on one vertical line, and the other pivot 37 and the guide roller 34A are on the same line. There is no need. In addition, the guide rollers 34 and 34A are provided at the center of the side end of the divided member, respectively, but may be provided at other positions, for example, at the end.

  As shown in FIG. 7, the left and right support columns 4 have inner guide rails 41 for vertically guiding the guide rollers 34, 34 at the left and right ends that are the rotation centers of the divided members 30 </ b> B, 30 </ b> C, An outer guide rail 42 that guides the guide roller 34A, which is the center of rotation of the dividing member 30D, is provided continuously. The inner space of the outer guide rail 42 is fixed to the shaft portion of the roller 34A. An endless chain 50 for moving the dividing member 30D up and down is also positioned. In this example, a member having an outer guide rail 42 on the inner surface and a member serving as a passage for the endless chain 50 are formed of lip groove steel, and the inner guide rail 41 is formed in an L-shaped steel at the opening of the groove steel. It is formed by protruding.

  The restricting body 3 of the present embodiment moves the shaft portion of the guide roller 34A of the dividing member 30D upward and downward by the elevating means 5 from the gate closed state of FIG. At the same time, the divided members 30B and 30C are pushed up by the divided member 30D via the hinge device 1 and are moved upward by the guide roller 34 while rotating, and the divided member 30A is also rotated by the divided member 30B. It is rotated by being pushed up through the device 1, and as shown in FIG. 6B, each split member is folded upward to be in a gate open state.

  Further, when the guide roller 34A is moved downward from the fully opened position of the gate, the divided member 30D starts to descend while rotating in the reverse direction. At the same time, the divided members 30B and 30C are also divided through the hinge device 1. Pulled down by the member 30D and moved downward by the guide roller 34 while rotating, the divided member 30A also rotates, and the gate closed state shown in FIG.

  In this example, the elevating means 5 is provided with fixed sprockets 51 and 52 at the top and bottom to engage the endless chain 50, and pulls the shaft portion of the guide roller 34A in the divided member 30D up and down integrally with the endless chain 50. A driving means 7 for driving the left and right sprockets 51, 51 in linkage with each other is provided, and the upper sprocket 51 is a driving gear and the lower sprocket 52 is a driven gear. The shaft portion of the endless chain 50 and the guide roller 34A, which is a rubber roller, is connected via a bracket that sandwiches the shaft portion, and a sliding member such as a bearing is built in the shaft portion itself. There is no such thing as it has a slim structure. As a result, the width of the support column 4 for guiding the guide roller 34A, specifically, the width of the outer guide rail 41 is suppressed to be small, and the passage width between the left and right support columns 4 and 4 can be maintained as wide as possible.

A toothed endless belt and a pulley may be used instead of such an endless chain and sprocket.
Further, the split member 30D of the restricting body 3 may be connected to one end side of the chain or the belt having ends, and a balance weight may be provided on the other end side. In this case, it is preferable that the balance weight is approximately half the weight of the regulating body 3 and is adjusted so that the total weight of the regulating body 3 is substantially equal to the total of the left and right balance weights. If the balance weight is used to balance the regulating body 3 in this way, the motor output of the drive means 7 can be reduced, and the reduction gear can be reduced to the minimum necessary, and the drive device can be miniaturized. Moreover, since it is a so-called vine type, there is almost no noise or vibration, which is suitable for an underground parking lot in a high-rise house. In addition, it is also possible to employ a method in which the split member 30D is connected to one end side of the wire and the other end side is wound with a reel provided on the upper part of the support column.

  Although a single row is disclosed in this example, it may be a multi-row chain, and it is also preferable to reduce vibration by providing a guide car, a sliding guide frame, a tensioner, or the like.

  A horizontal rotating shaft 70 is provided between the upper portions of the columns 4, and the sprocket 51 is attached to each of the left and right ends of the rotating shaft 70. The drive means 7 drives the sprockets 51 and 51 at both ends in a synchronized state by rotationally driving the rotary shaft 70.

  More specifically, a motor 71 and a speed reducer 72 that drive the rotating shaft 70 via a chain or a belt are attached at appropriate positions below the rotating shaft 70. The motor 71 is provided with a brake mechanism for maintaining the gate open state in which the restricting body 3 is raised and the gate closed state in which the regulator 3 is lowered.

  The drive unit such as the motor 71 and the speed reducer 72 can be adapted to the case where there is no surplus space above the passage by being installed below the rotary shaft 70 as in this example, but it is provided sideways or above. Of course. Of course, an interlocking mechanism other than the rotating shaft 70 may be employed.

The control means 6 is composed of a control panel provided with an open / close / stop switch (not shown), and can be remotely operated by a remote controller or the like.
When the control means or the like breaks down, the power is turned off, and the brake of the motor 71 is automatically released in the event of a power failure. Therefore, by rotating the input shaft of the speed reducer 72 with the attached arm, the regulating body 3 The gate can be opened and closed by manually moving up and down (folding / extending).

Further, a limit switch (not shown) for recognizing the position of the restricting body 3, particularly the position of the dividing member 30 </ b> D, is provided. Controls the lifting speed.
A key device (not shown) that is locked to the support column 4 is attached to the divided member 30D.

  In this example, a circuit breaker 20 is provided, and the control means 6 controls the drive of the circuit breaker 20 and opens the circuit breaker 20 after the lifting / folding operation of the restriction body 3 is completed. The circuit breaker 20 is closed before the descent action 3 starts. As a result, the vehicle or the like can be prevented from entering the gate, and when the gate is opened, the breaker 20 is opened after the ascending operation of the regulating body 3 is completed, and an unreasonable vehicle or the like that is ascending. Is prevented from entering.

In addition, it is preferable to install a traffic signal and a chain gate on the inside and outside of the field with respect to the gate so that the gate is not crushed by a vehicle collision or the like.
In this example, a loop coil for detecting a vehicle is provided in the vicinity of the gate on the inside and outside of the field, and control is performed so that the remote controller can be operated only during the detection inside. As a result, the vehicle can be stopped / decelerated near the gate. For the same purpose, a sleeper for deceleration may be embedded.

  Further, a beam sensor is provided on the inside and outside of the field of the regulating body 3, and when the light is shielded, the signal is input to the control means 6 to stop the lifting operation or not to operate during the light shielding. Controlled and secure.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and can of course be implemented in various forms without departing from the gist of the present invention. In particular, the hinge device 1 according to the present invention is not limited to the case where the hinge device 1 is applied to a vertically moving gate as in the present embodiment. As shown in FIG. Of course, it can be suitably used as an automatic / manual gate and door hinge device.

It is explanatory drawing which shows the hinge apparatus based on typical embodiment of this invention, (a) is a disassembled perspective view, (b) is a perspective view which shows the assembled state. (A)-(c) is explanatory drawing which shows the state which a 1st member and a 2nd member rotate similarly through a hinge apparatus. Similarly sectional drawing of a hinge apparatus. (A), (b) is a perspective view which shows the modification of a hinge apparatus, respectively. The front view which shows the folding type automatic raising / lowering gate which concerns on typical embodiment of this invention. (A), (b) is explanatory drawing which shows a closed state and an open state similarly. (A) is AA sectional drawing of the support | pillar part in FIG. 6, (b) is BB sectional drawing similarly, (c) is CC sectional drawing, (d) is DD sectional drawing. (A), (b) is explanatory drawing which shows a closed state and an open state similarly. Explanatory drawing which shows the example which used the hinge apparatus based on this invention for another gate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hinge apparatus 2 Automatic raising / lowering gate 3 Regulatory body 4 Support | pillar 5 Elevating / lowering means 6 Control means 7 Drive means 8 First member 9 Second member 10 Hinge main body 11 Round bar 12 Bearing portion 13 Mounting portion 14 Shaft body 15 Plate material bracket 20 Breaker 30A-D Split member 31 Upper end 32 Lower end 33 Side end 34, 34A Guide roller 35 Recumbent shaft 36 Vertical shaft 37 Axis 40 Guide rail 41 Inner guide rail 42 Outer guide rail 50 Endless chain 51, 52 Sprocket 70 Rotating shaft 71 Motor 72 Reducer

Claims (11)

A hinge device for connecting the first member and the second member to each other so as to be rotatable,
A hinge body in which one end side of a round bar is bent into an annular shape to form a bearing part, and an attachment part attached to the first member or the second member is provided on the other end side of the round bar Are attached to the corresponding positions of the first member and the second member, respectively,
By inserting the hinge body that is attached to the first member and the shaft body that communicates with the adjacent bearing portions of the hinge body that is attached to the second member,
The hinge device, wherein the first member and the second member are connected to each other so as to be rotatable about the shaft body via the bearing portion.   A bearing portion of a hinge body attached to the second member is positioned between two or more hinge body bearing portions disposed at a predetermined interval on the first member, and communicates with these bearing portions. The hinge device according to claim 1, wherein a shaft body is inserted and attached.   The hinge apparatus according to claim 1 or 2, wherein the round bar constituting the hinge body is a round stainless steel round bar having a diameter of 10 to 20 mm.   The hinge device according to claim 3, wherein one end side of the round bar is bent into an annular shape, and a tip end portion is welded to a middle portion to constitute a bearing portion. A plurality of divided members extending in the width direction of the passage are arranged vertically,
By connecting the upper and lower ends of each adjacent divided member with the hinge device according to any one of claims 1 to 4 to freely rotate, a restricting body that can be folded up and down is configured.
The regulating body is disposed between the left and right support columns standing on the side of the passage,
The split member located at the top is pivotally supported on the upper part between the columns so that it can rotate horizontally.
Guide rollers guided by guide rails provided on the inner surfaces of the left and right support columns are respectively provided on the left and right ends of the divided members except the uppermost divided member.
The lowermost split member is connected to lifting means that moves up and down,
A folding type automatic elevating gate comprising control means for controlling the operation of the elevating means.   The guide roller is provided at a central portion of the left and right side ends of each divided member excluding the uppermost and lowermost divided members, and the elevating means is connected to a guide roller shaft portion of the lowermost divided member. Item 6. The automatic elevating gate according to item 5.   The hinge device is provided with a U-shaped plate bracket that receives the upper end or the lower end of the split member, and the other end of one or more hinge bodies attached to the split member is fixed to the bracket. The automatic elevating gate according to claim 5 or 6.   The automatic elevating gate according to any one of claims 5 to 7, wherein the dividing member is a fence body, and a plurality of hinge devices are provided on each of an upper end frame and a lower end frame of the fence body. The elevating means disposes transmission gears on which an endless connection support made of a chain or a toothed belt is engaged at the upper and lower portions of each column, and drives the left and right transmission gears in conjunction with each other. Drive means for
9. The guide roller shaft portion of the lowermost division member is connected to each connection support body, so that the lowermost division member is moved up and down integrally with the connection support body. The automatic elevating gate according to item.   A motor and a speed reducer in which the driving means is provided with a horizontal rotating shaft between the upper portions of the columns, the transmission gears are provided on both left and right ends of the rotating shaft, and the rotating shaft is rotationally driven through a chain. The automatic elevating gate according to any one of claims 5 to 9, wherein is provided at a position below the rotating shaft. A breaker is also provided, and the control means controls the drive of the breaker to open the breaker after completion of the lifting / folding operation of the restricting body, and before the lowering operation of the restricting body starts The automatic lifting gate according to any one of claims 5 to 10, wherein the circuit breaker is closed.

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