JP2009287309A - Extensible/contractible gate door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extensible/contractible gate door capable of reducing the force required when opening the gate door. <P>SOLUTION: This extensible/contractible gate door is provided with a plurality of vertical sashes 1, 2, 3, links 6, 7 being freely extensible and contractible in the right and left directions to connect these vertical sashes, and a suspension root frame 13. The link has a sliding shaft 15c provided movably along the longitudinal direction of the vertical sash. The vertical sash 2 being adjacent to the suspension root frame is connected with the suspension root frame 13 to move onto a suspension root side. The suspension root frame 13 has a guide part 14 inclined at a downgrade toward a door end side. When the gate door is contracted, the vertical sash 2 being adjacent to the suspension root frame 13 moves onto the suspension root side, and the sliding shaft 15c of the vertical sash being adjacent to the suspension root frame is guided by a guide part 14 and moves upward in accordance with moving of the vertical sash 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a telescopic gate.

  As shown in FIG. 21, the conventional telescopic gate has a large number of vertical bars 90 connected by a pantograph-shaped link 91. The telescopic gate with a wide frontage and a large number of vertical bars and links has a heavy opening and closing, and people with weak power sometimes have difficulty opening and closing the gate. Also, in recent years, there is a tendency for urban houses and the like to be designed with an open sense design that allows the line of sight to be lost. For this reason, if the interval P between the vertical rails 90 is widened, the inclination of the link is reduced with the gate closed. Because it becomes smaller, a stronger force is required when opening the gate.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a telescopic gate that can reduce the force when opening the gate.

  In order to achieve the above object, the telescopic gate according to the first aspect of the present invention comprises a plurality of vertical rails, a link that can be expanded in the left-right direction connecting the vertical rails, and a suspension base, and the link is a vertical gate. It has a slide shaft that is slidable along the longitudinal direction of the crosspiece, and the vertical crosspiece adjacent to the suspension base is connected to the suspension base so that it can move to the suspension base. It has a guide section that is inclined downwardly toward the door end side, and when the gate is retracted, the vertical beam adjacent to the hanging heel moves to the hanging side, and accordingly, the vertical beam adjacent to the hanging awning. The sliding shaft is guided by the guide portion and moves upward.

  The telescopic gate according to the invention of claim 2 comprises a plurality of vertical bars, a link that can be extended in the left-right direction connecting the vertical bars, and a suspension base, and the link moves along the longitudinal direction of the vertical bars. A vertical shaft adjacent to the suspension base and the suspension base are connected by a suspension base link that is extendable in the left-right direction. The suspension base link is a sliding shaft. The engaging part moves upward as the hanging part link shrinks, and when the gate is shrunk, the vertical beam adjacent to the hanging bar is on the hanging side. Along with this movement, the sliding shaft of the vertical beam adjacent to the suspension base hook engages with the engaging portion and moves upward.

  When the telescopic gate according to the invention of claim 1 is contracted, the sliding shaft of the vertical beam adjacent to the suspension base is guided upward by the guide portion provided on the suspension base and moves upward. Since the link connecting the vertical rails is helped to shrink, the force when opening the gate can be reduced.

  In the telescopic gate according to the invention of claim 2, when the gate is contracted, the sliding shaft of the vertical rail adjacent to the suspension base engages with the engagement portion of the suspension base link and moves upward. Because the link connecting the vertical rails is helped to shrink, the force when opening the gate can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 1-11 has shown 1st Embodiment of the expansion-contraction gate of this invention. As shown in FIG. 1, the telescopic gate is composed of one vertical beam 1, the other vertical beam 2, an intermediate vertical beam 3 provided between the two vertical beams 1 and 2, and one vertical beam 1 and an intermediate vertical beam. One upper link 4 provided between the upper portions of the crosspieces 3, the other upper link 5 provided between the intermediate vertical crosspiece 3 and the upper portion of the other vertical crosspiece 2, and the lower portion of one vertical crosspiece 1 and the intermediate vertical crosspiece 3 One section is constituted by one side lower link 6 provided between and the other side lower link 7 provided between the lower part of the intermediate vertical beam 3 and the other vertical beam 2, and this is divided into two sections on the left and right. It is continuous. The distance between one vertical beam 1 and the intermediate vertical beam 3, the distance between the intermediate vertical beam 3 and the other vertical beam 2, and the distance between the upper links 4, 5 and the lower links 6, 7 are all about 750 mm. Therefore, it is a design with an open sensation in which the line of sight is lost in the prospective direction. Further, the one-side upper link 4 and the other-side upper link 5, the one-side lower link 6 and the other-side lower link 7 are arranged so as to be horizontally continuous, and a number of oblique links are arranged. Unlike telescopic gates, it is a straight and clean design like a handrail or fence.

  This telescopic gate has one side (left side) as the door tip side and the other side (right side) as the suspension side, and is installed at the frontage between the left and right support columns 46a and 46b. A door rod 47 is attached to the left vertical beam 1 (one vertical beam 1), and the door rod 47 is provided with a latch 48 and an operation handle 49 for a column 46a. The vertical beam 2 at the right end (the other vertical beam 2) is connected to the hanging rod 13 and the hanging rod 13 is attached to the column 46b by a hinge 50.

First, the configuration of the telescopic gate body will be described. As shown in FIGS. 4 and 5, one vertical beam 1 and the other vertical beam 2 are made of an aluminum extruded section having a substantially C-shaped cross section in which a slit 57 is formed in the longitudinal direction on one side surface. It is provided facing the front side and the rear side toward the inside. As shown in FIG. 8, a free caster 21 is attached to the lower ends of the front and rear vertical bars 1, 1, 2 and 2.
As shown in FIGS. 4 and 5, the intermediate vertical beam 3 includes a guide vertical beam 3 a made of an extruded aluminum material having a substantially C-shaped cross-section with a slit 57 formed in the longitudinal direction on one side surface, and the slit 57 on the inner side. The front and rear guide bars 3a and 3a are provided with an elongated portion 3b made of a square pipe. Two sliding shafts 15a and 32 guided through a roller 31 so as to be movable up and down are inserted into the front and rear guide vertical bars 3a and 3a at the lower portion of the extending portion 3b, and are extended by the sliding shafts 15a and 32. The part 3b is guided so as to be movable in the longitudinal direction of the guide vertical beam 3a, and the intermediate vertical beam 3 can be extended upward by moving the extension part 3b upward.

  The one side upper link 4 and the other side upper link 5 are U-shaped cross-sections facing downward, and are continuously provided in a straight line at positions higher than the upper ends of the vertical bars 1, 2, 3. As shown in FIGS. 7 and 8, a bracket 33 extending downward is attached to the other side end portion of the other side upper link 5, and the lower end portion of the bracket 33 is connected to the upper end portion of the other vertical rail 2 in a prospective direction. A shaft 34 is rotatably connected. As shown in FIGS. 2 and 4, a bracket 35 extending to one side is attached to one end of the other upper link 5, and the front end of the bracket 35 is attached to the upper end of the extension 3 b of the intermediate vertical beam. The bracket 36 is pivotally connected by a shaft 37 in a prospective direction. A bracket 38 with a U-shaped cross-section is attached to the inside of the upper link 4 on the one side, and the bracket 38 and the bracket 36 attached to the upper end of the extended portion 3b can be rotated around a prospective shaft 39. It is connected. The other side end of the one-side upper link 4 rides on a bracket 35 attached to the other-side upper link 5, and the front and rear walls are cut obliquely from the lower side. The insertion hole 40 of the shaft 39 of the bracket 38 attached to the one side upper link 4 is a long hole in the left-right direction. As shown in FIG. 1, one side end portion of the one side upper link 4 is rotatably connected to a bracket 41 attached to the upper end portion of one vertical rail 1 by a shaft 42 in a prospective direction.

As shown in FIG. 5, the one-side lower link 6 includes a one-side first lower link member 8 and a one-side second lower portion that are arranged in the lower portion between the vertical bars 1, 1, 3a, 3a and spaced in the prospective direction. A link member 9 is provided. The one-side first lower link member 8 has a downward inclined portion 8a provided at one end portion, an upward inclined portion 8b provided at the other end portion, and a horizontal portion 8c that connects both inclined portions. ing. The one side second lower link member 9 is opposite to the one side first lower link member 8 in the left-right direction, and an upward inclined portion 9b provided at one end portion and a downward inclination provided at the other end portion. It has the part 9a and the horizontal part 9c which connects both inclination parts. The tip of the downward inclined portion 8a of the first lower link member 8 on the one side is pivotally connected to the lower end of one vertical rail 1 by a shaft 43a in the prospective direction, and the first lower link member 8 on the first side is pivoted. The tip of the upward inclined portion 8b is connected to the intermediate vertical beam 3 by a slide shaft 15a so as to be rotatable and movable along the longitudinal direction of the vertical beam. The tip of the downwardly inclined portion 9a of the second lower link member 9 on the one side is rotatably connected to the lower end of the intermediate vertical beam 3 by a shaft 43b in the prospective direction. The tip of the upward inclined portion 9b is connected to one vertical rail 1 by a slide shaft 15b so as to be rotatable and movable along the longitudinal direction of the vertical rail. The horizontal portion 8c of the one-side first lower link member 8 and the horizontal portion 9c of the one-side second lower link member 9 overlap in the prospective direction, and the central portion of both horizontal portions 8c, 9c is the prospective direction shaft 44a. It is pivotably connected.
Similarly to the one-side lower link 6, the other-side lower link 7 includes the other-side first lower link member 10 and the other-side second lower link member 11 that are arranged at intervals in the prospective direction. The other first lower link member 10 has a downward inclined portion 10a provided at one end portion, an upward inclined portion 10b provided at the other end portion, and a horizontal portion 10c connecting both inclined portions. ing. The second lower link member 11 on the other side is opposite to the first lower link member 10 on the other side. The upward inclined portion 11b provided at one end and the downward inclined provided at the other end. It has the part 11a and the horizontal part 11c which connects both inclination parts. The tip of the downward inclined portion 10a of the other side first lower link member 10 is rotatably connected to the lower end portion of the intermediate vertical beam 3 by a shaft 43b in the prospective direction. The tip of the upward inclined portion 10b is connected to the other vertical rail 2 by a slide shaft 15c so as to be rotatable and movable along the longitudinal direction of the vertical rail. The tip of the downward inclined portion 11a of the second lower link member 11 on the other side is rotatably connected to the lower end portion of the other vertical rail 2 by a shaft 43c in the prospective direction, and the second lower link member 11 on the other side. The tip of the upward inclined portion 11b is connected to the intermediate vertical beam 3 by a slide shaft 15a so as to be rotatable and movable along the longitudinal direction of the vertical beam. The horizontal part 10c of the other side first lower link member 10 and the horizontal part 11c of the other side second lower link member 11 overlap in the prospective direction, and the central part of both horizontal parts 10c, 11c is a prospective direction shaft 44b. It is pivotably connected.

  The sliding shaft 15a inserted through the tip of the upward inclined portion 8b of the one side first lower link member 8 and the tip of the upward inclined portion 11b of the other side second lower link member 11 is the extended portion 3b of the intermediate vertical rail 3. The one side / other side lower links 6, 7 and the one side / other side upper links 4, 5 are connected to each other by the extended portion 3 b.

  The shaft 43b connecting the tip of the downward inclined portion 9a of the second lower link member 9 on one side and the tip of the downward inclined portion 10a of the first lower link member 10 on the other side to the intermediate vertical rail 3 is shown in FIG. As shown, the torsion spring 12 is loosely fitted, and the front and rear ends of the torsion spring 12 are locked to the downward inclined portions 9a and 10a of the link members. As shown by an arrow 45 in the drawing, the torsion spring 12 is rotated in the direction in which the link members 9 and 10 are pivoted about the shaft 43b (the direction in which the one-side lower link 6 and the other-side lower link 7 are contracted). ).

FIG. 9 shows a state in which the telescopic gate is contracted halfway, and FIG. 11 shows a state in which the telescopic gate is contracted most. As shown in these figures, when the telescopic gate is contracted, the upper link 4 on the one side and the upper link 5 on the other side are moved upward with the shafts 34 and 42 on the one and the other vertical rails 1 and 2, respectively Accordingly, the extension portion 3b of the intermediate vertical beam 3 moves upward, and the intermediate vertical beam 3 extends upward. The lower link 7 on the one side and the lower link 7 on the other side rotate upward with the shafts 43a, 43b, 43c through which the link members 8, 9, 10, 11 are inserted into the downward inclined portions 8a, 9a, 10a, 11a as fulcrums. The sliding shafts 15a, 15b, and 15c inserted through the upward inclined portions 8b, 9b, 10b, and 11b are contracted by sliding above the vertical bars 1, 2, and 3, respectively.
This telescopic gate is provided with horizontal portions 8c, 9c, 10c, 11c on the link members 8, 9, 10, 11 constituting the lower links 6, 7, and the horizontal portions 8c, 9c and the horizontal portions 10c, 11c. However, by overlapping each in the prospective direction, the interval between the vertical rails can be widened, and the lower links 6 and 7 are arranged horizontally and become inconspicuous. In addition, the downwardly inclined portions 8a, 9a, 10a, and 11a and the upwardly inclined portions 8b, 9b, 10b, and 11b are provided at both ends of each link member 8, 9, 10, and 11, so that the gate is shortened to the vertical rail 1. When a force F is applied in the direction, the link members 8, 9, 10, and 11 smoothly rotate upward about the shafts 43a, 43b, and 43c. In a state in which the gate is contracted, the gate tends to extend without permission due to the extension portion 3b of the intermediate vertical beam 3 and the weight of each of the links 4, 5, 6, and 7, but as described above, the torsion spring 12, the one-side lower link 6 and the other-side lower link 7 are biased in the contracting direction, so that the gate can be stopped in a contracted state to an arbitrary length. Further, since the urging force of the torsion spring 12 acts, the operation force F when the gate is contracted can be reduced. Furthermore, since the extension part 3b of the intermediate vertical beam 3 connects the one-side / other-side upper links 4, 5 and the one-side / other-side lower links 6, 7, The movement of the lower links 6 and 7 synchronizes, and the gate expands and contracts smoothly and stably.

  Furthermore, the telescopic gate is provided with a mechanism for reducing the force when the gate is opened at the hanging part 58. As shown in FIGS. 7 and 8, the suspension arm 13 is provided with guide rails 51 projecting to the door-end side at the front and rear sides of the upper part and the lower part, and the right end adjacent to the suspension arm 13. The vertical beam 2 has a roller 52 that engages with the guide rail 51, and the vertical beam 2 can be moved to the suspension side via the guide rail 51 and the roller 52. Furthermore, a guide plate 53 that protrudes toward the door end is provided at the lower portion of the suspension base 13. The guide plate 53 has a guide portion 14 that is inclined downwardly toward the door end side.

  As shown in FIG. 9, when a force F is applied to the operating handle 49 on the suspension base side to open the gate, the right-hand vertical beam 2 is connected to the suspension base 13 so as to be movable to the suspension base side. First, the telescopic gate moves as a whole to the suspension side. At this time, as shown in FIG. 10, the slide shaft 15c inserted through the upward inclined portion 10b of the other first lower link member 10 rides on the guide portion 14 and moves upward. As a result, the force F applied from the operation handle 49 toward the suspension base side is converted into a force for contracting the one-side / other-side lower links 6, 7, and the force is transmitted via the extending portion 3 b of the intermediate vertical beam 3. Since the one-side / other-side upper links 4 and 5 are also pushed up, the force F applied to the operation handle 49 when opening the telescopic gate can be reduced. In addition, the code | symbol 54 in a figure is a stopper which contact | abuts to the vertical rail 2 when a gate is shrunk, and controls that the vertical rail 2 moves to the suspension side further. A stopper (not shown) is provided at the tip of each guide rail 51 to prevent the roller 52 attached to the vertical rail 2 from coming off the guide rail 51.

  In the first embodiment described above, each of the lower link members 8, 9, 10, and 11 is formed into a straight bar shape, and the one-side lower link 6 and the other-side lower link 7 are respectively X in the state shown in FIG. It may be crossed in a letter shape.

12-16 has shown 2nd Embodiment of the expansion-contraction gate of this invention. The configuration of the telescopic gate body is the same as that of the first embodiment, and the mechanism for reducing the force when opening the gate provided on the suspension base 58 is different from that of the first embodiment.
As shown in FIGS. 13 and 14, the rightmost vertical beam 2 (the other vertical beam 2) and the hanging rod 13 are connected by X-shaped hanging link 16 a and 16 b. Of the eight shafts that connect the ends of the suspension base links 16a, 16b to the suspension base 13 and the vertical rail 2, the shafts 55a, 55b, 55g, 55h are respectively connected to the suspension base 13 and the vertical rail 2. The shafts 55c, 55d, 55e, and 55f are fixed to the suspension base 13 and the vertical rail 2 so as to be movable in the vertical direction. Accordingly, the upper and lower suspension base links 16a and 16b can be expanded and contracted in the left-right direction, and the vertical beam 2 can be moved toward and away from the suspension base 13 as the suspension base links 16a and 16b expand and contract. . A plate 56 is attached to a vertically movable shaft 55e on the vertical rail 2 side of the lower suspension base part link 16b, and an angle-shaped engaging part 17 is attached to the plate 56. The engaging portion 17 is engaged with the sliding shaft 15c inserted through the upward inclined portion 10b of the other side first lower link member 10 from below.

  When the operation handle 49 is moved to the hanging base side to open the gate, as shown in FIG. 15, the vertical rail 2 moves to the hanging side while the hanging part links 16a and 16b are contracted. At this time, as the shaft 55e of the suspension part link 16b moves upward, the slide shaft 15c engages with the engaging part 17 and moves upward. As a result, the force F applied from the operation handle 49 toward the suspension base side is converted into a force for contracting the one-side / other-side lower links 6, 7, and the force is transmitted via the extending portion 3 b of the intermediate vertical beam 3. Since the upper links 4 and 5 on one side and the other side are also pushed up, the force applied to the operation handle 49 when opening the telescopic gate can be reduced.

  FIG. 17 is a front view showing a third embodiment of the telescopic gate of the present invention, and FIG. 18 shows a state in which the telescopic gate is shrunk halfway. In this telescopic gate, a plurality of vertical bars 59, 59,... Are connected by a pantograph-shaped link 60, and the force at the time of opening the gate is reduced at the suspending portion 58 as in the first embodiment. It has a mechanism. The link 60 includes a first link member 61 that inclines to the right and a second link member 62 that inclines to the left, and connects the intersections of both link members with prospective-direction shafts 63a, 63b, 63c, and 63d. Configured. The shaft 63b located at the second height from the bottom is fixed to the vertical rail 59, and the shaft 63c located at the third height from the bottom is a sliding shaft that slides along the longitudinal direction of the vertical rail 59 It has become.

  As shown in FIG. 18, when a force F is applied to the operation handle 49 on the suspension base side to open the gate, the right end vertical rail 2 is connected to the suspension base 13 so as to be movable to the suspension base side. The telescopic gate moves as a whole to the suspension side. The link 60 rotates with the shaft 63 b fixed to the vertical beam 59 by the link members 61 and 62 as a fulcrum, and the slide shaft 63 c is contracted by moving upward along the vertical beam 59. At this time, since the sliding shaft 63c rides on the guide portion 14 and moves upward, the force F applied from the operation handle 49 toward the suspension side is efficiently converted into a force for contracting the link 60. The force F applied to the operation handle 49 when opening the telescopic gate can be reduced.

  FIG. 19 is a front view showing a fourth embodiment of the telescopic gate according to the present invention, and FIG. 20 shows a state in which the telescopic gate is contracted halfway. This telescopic gate has an upper link 64 provided between the upper portions of the plurality of vertical bars 59, 59,..., A lower link 65 provided between the lower portions of the plurality of vertical bars 59, 59,. ,... Are provided in a straight line on top of each other. The hanging part 58 is provided with a mechanism for reducing the force when opening the gate, as in the first embodiment. The upper link 64 includes a first upper link member 67 that inclines to the right and a second upper link member 68 that inclines to the left, and the right end of the first upper link member 67 and the second upper link member 68. The left end portion of the first upper link member 67 and the right end portion of the second upper link member 68 are connected to the vertical beam 59 by a shaft 70. The cap lumber 66 is fixed to the right end of the first upper link member 67. The lower link 65 is configured similarly to the lower link 7 of the first and second embodiments. The intersecting portion of the upper link 64 and the intersecting portion of the lower link 65 are connected by an intermediate vertical cross 71.

  As shown in FIG. 20, when a force F is applied to the operating handle 49 to the suspension base side to open the gate, the right end vertical rail 2 is connected to the suspension base 13 so as to be movable to the suspension base side. The telescopic gate moves as a whole to the suspension side, and accordingly, the sliding shaft 15c of the lower link 65 rides on the guide portion 14 and moves upward. Thereby, the force F applied from the operation handle 49 toward the suspension base side is converted into a force for contracting the lower link 65, and the force also pushes up the upper link 64 via the intermediate vertical rail 71. The force F applied to the operation handle 49 when opening the telescopic gate can be reduced. The cap lumber 66 rotates upward together with the first upper link member 67.

  The present invention is not limited to the embodiments described above. The present invention can be used for any telescopic gate, and the form of the link is not limited.

It is a front view which shows 1st Embodiment of the expansion-contraction gate of this invention. It is the X section enlarged view of FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a perspective view of one side lower link and the other side lower link. It is DD sectional drawing of FIG. It is a front view which expands and shows the suspension base part of the expansion-contraction gate of 1st Embodiment. It is AA sectional drawing of FIG. It is a front view which shows the state which shrunk the expansion gate of 1st Embodiment to the middle. FIG. 10 is an enlarged front view of the suspension base in the state of FIG. 9. It is a front view which shows the state which retracted the expansion gate of 1st Embodiment most. It is a front view of the expansion-contraction gate of 2nd Embodiment. It is a front view which expands and shows the suspension base part of the expansion-contraction gate of 2nd Embodiment. It is AA sectional drawing of FIG. It is an enlarged front view of the suspension base part when the expansion-contraction gate of 2nd Embodiment is shrunk to the middle. It is a front view which shows the state which most contracted the expansion-contraction gate of 2nd Embodiment. It is a front view of the expansion-contraction gate of 3rd Embodiment. It is a front view which shows the state which shrunk the expansion gate of 3rd Embodiment to the middle. It is a front view of the expansion-contraction gate of 4th Embodiment. It is a front view which shows the state which shrunk the expansion gate of 4th Embodiment to the middle. It is a front view which shows the conventional expansion-contraction gate.

Explanation of symbols

1 Vertical rail (vertical rail)
2 The other vertical beam (vertical beam)
3 Middle vertical beam (vertical beam)
3a Guide vertical rail 3b Extension part 4 One side upper link (link)
5 Other side upper link (link)
6 One side lower link (link)
7 Lower link on the other side (link)
8 One side first lower link member 9 One side second lower link member 10 Other side first lower link member 11 Other side second lower link member 8a, 9a, 10a, 11a Downward inclined portion 8b, 9b, 10b, 11b Upward Inclined portion 8c, 9c, 10c, 11c Horizontal portion 12 Torsion spring (biasing member)
13 Suspension base 14 Guide part 15a, 15b, 15c Sliding shaft 16a, 16b Suspension part link 17 Engagement part 58 Suspension part 59 Vertical beam 60 Link 63c Sliding axis

Claims (2)

  A plurality of vertical rails, a link that can be extended in the left-right direction connecting the vertical rails, and a suspension base rod, the link has a sliding shaft that is movably provided along the longitudinal direction of the vertical rails, The vertical beam adjacent to the suspension base is connected to the suspension base so as to be movable toward the suspension base, and the suspension base has a guide portion that is inclined downwardly toward the door end side, and has a gate. The vertical beam adjacent to the suspension base rod moves to the suspension base side when it is contracted, and the slide shaft of the vertical beam adjacent to the suspension base rod is guided by the guide portion and moves upward accordingly. Telescopic gate to be.   A plurality of vertical rails, a link that can be extended in the left-right direction connecting the vertical rails, and a suspension base rod, the link has a sliding shaft that is movably provided along the longitudinal direction of the vertical rails, The vertical beam adjacent to the hanging rod and the hanging rod are connected by a hanging link that is extendable in the left-right direction, and the hanging link has an engaging portion that engages with the sliding shaft, The engaging part moves upward as the suspension base link shrinks, and when the gate is retracted, the vertical beam adjacent to the suspension base moves to the suspension base side, and along with that, is adjacent to the suspension base A telescopic gate characterized in that the sliding shaft of the vertical rail that engages engages with the engaging portion and moves upward.

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