JP5277441B2 - Vertical frame of telescopic gate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply and surely connect a vertical frame of an expansion gate by a lower connecting crosspiece, and to connect the vertical frame so as to secure excellent connecting strength including the torsion of a vertical hollow crosspiece. <P>SOLUTION: The vertical hollow crosspiece 2 and the lower connecting crosspiece 3 are connected to each other through the following steps: hook locking pieces 33 which are protruded to front and rear face sides of the lower connecting crosspiece 3, and locked to notched holes 22 which are formed in a pair of protrusive streaks 21 at the groove opening end of the vertical hollow crosspiece 2, respectively; a positioning protrusion 35 which is arranged in a rising state on a placing and closing plate 34 for placing a lower end of the vertical hollow crosspiece arranged on the lower connecting crosspiece 3 are inserted into the reception groove 24 of the vertical hollow crosspiece 2; and a pair of right and left vertical crosspiece fitting portions 32 of the lower connecting crosspiece 2 is fitted and held between the pair of protrusive streaks 21 of the vertical hollow crosspiece 2 and a pair of ribs 23 in the hollow portion of the vertical hollow crosspiece 2. Even if an external force in a torsional direction acts on the vertical hollow crosspiece, a possibility of the disengagement of the lower connecting crosspiece 3 from the vertical hollow crosspiece 2 can be eliminated. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a telescopic gate, and more particularly to a vertical frame thereof.

  For example, the vertical frame of the telescopic gate is formed by connecting the lower ends of a pair of hollow vertical beams arranged in parallel in the front-rear direction with a C-shaped cross section facing the groove openings, and connecting the groove openings with a short connecting lower beam. In the following patent document, the above-mentioned connecting lower beam is connected to the vertical beam. A hollow connecting base portion interposed between the opposed surfaces of the two, a partition vertical groove for receiving a pair of protrusions at the groove opening end portion of the vertical rail disposed in the middle in the width direction of the connection base portion, and connecting via the partition vertical groove A pair of left and right vertical beam fitting portions that are fitted in the hollow portion of the hollow vertical beam with the same width and the same height as the connection base portion arranged in the longitudinal direction by dividing the base portion in the longitudinal direction, and the connection With a locking projection protruding in the left-right width direction on the inner wall of the vertical groove between the base and the vertical beam fitting part The hollow vertical beam is provided with a notch hole for receiving and locking the locking projection in the partition vertical groove of the lower connecting beam by partially notching the vicinity of the lower ends of the pair of protrusions at the end of the groove opening of the hollow vertical beam. The pair of protrusions at the groove opening end of the hollow vertical beam is extended along the partition vertical groove of the lower beam, and the pair of protrusions at the groove opening end of the hollow vertical beam is expanded in the left-right width direction. Then, by fitting the vertical beam fitting portion into the hollow portion of the hollow vertical beam, the bottom wall of the partition groove of the lower beam connected to the notch hole in the pair of protrusions at the groove opening end of the hollow vertical beam Each of the locking projections is elastically locked.

Japanese Patent Laid-Open No. 10-72990

  In this case, in a state where the vertical beam fitting portion of the lower connecting beam is fitted to the lower end of the hollow vertical beam, the locking projection of the lower connecting beam can be locked in the locking hole. When connecting the hollow vertical beam by the above, it is possible to prevent the screws from being exposed and to provide a connecting device that exhibits a good appearance.

  However, since the hollow vertical beam and the connecting lower beam are connected by the notch hole in the left-right width direction and the latching piece, the external longitudinal force acts on the hollow vertical beam. , There is a possibility that the pair of protrusions at the groove opening end of the hollow vertical rail will expand, that is, the possibility that the locking of the notch hole and the hooking locking piece will be released. When twisting force acts on the vertical frame or the hollow vertical beam, such as when it is forced to open and close with the hollow vertical beam held in the unlocked or unlocked state, or when an object touches the telescopic gate, etc. There is a problem that the lower connecting beam connecting the lower ends of the vertical beam is easily detached at one or both of the front and rear.

  Also, due to the deformation of the hollow vertical beam in the telescopic gate and the damage of the lower connecting beam, it was necessary to remove the lower connecting frame from the hollow vertical frame, such as when performing maintenance to replace the hollow vertical beam and the lower connecting beam. At this time, the locking hole and the hooking locking piece are locked at the bottom surface of the partition groove of the connecting lower rail, and the partition groove is about the thickness of the hollow vertical frame. Even if you try to release the stop, the tool cannot be inserted into the locking part, so the work tends to be complicated. On the other hand, even if you can remove it by twisting the hollow vertical rail or vertical frame, There is a possibility that the deformation due to the unreasonable expansion of the lower end of the hollow vertical beam remains, and the torsion work in front of the owner causes distrust to the owner.

  The present invention has been made in view of such circumstances, and the problem to be solved is to enable as simple and reliable connection as possible and to ensure excellent connection strength including twisting of the hollow vertical beam. To provide the vertical frame of the telescopic gate.

  In accordance with the above-described problems, the present invention provides a notch formed by connecting a pair of hollow vertical bars and lower connecting bars to a pair of protrusions at the groove opening end portions of the hollow vertical bars on the contact surfaces of the hollow vertical bars and the lower connecting beams. Positioning protrusions that are placed upright on the mounting blocking plate that holds the lower ends of the hollow vertical bars placed on the connecting lower beam, locking the hook locking pieces protruding to the front and rear front sides of the lower connecting beam to the hole, Inserted into the hollow portion of the hollow vertical beam and engaged with the inside of the front wall, and the pair of left and right vertical beam fitting portions of the lower connecting beam is connected to the pair of protrusions at the groove opening end of the hollow vertical beam. The pair of ribs in the hollow portion of the hollow vertical beam is fitted and held so that the relative positional relationship between the hollow vertical beam and the connecting lower beam is regulated, and an external force in the twisting direction acts on the hollow vertical beam. In addition to suppressing the twisting, even if some twisting occurs, the effect of locking the locking hole and the hooking locking piece is suppressed and connected from the hollow vertical beam. While eliminating the possibility of the beam coming off as much as possible, the lower end of the hollow vertical beam is closed by placing the lower end of the hollow vertical beam with the mounting blocking plate above the connected lower beam, and the lower end of the hollow vertical beam The exposure of the cut surface is prevented, and the danger and the possibility of appearance damage due to the exposure of the cut surface are eliminated. That is, the invention according to claim 1 is formed in a C-shaped cross section to form a groove opening. The lower ends of a pair of hollow vertical bars arranged in parallel in the front-rear direction are connected by a short connecting lower beam, and the telescopic links are respectively received and supported by the hollow portions of the hollow vertical beams through the groove openings. It is a vertical frame of a telescopic gate that is connected to be freely extendable in the left-right width direction, and includes a hollow connecting base portion having the connecting lower rail interposed between opposed surfaces of the hollow vertical rail, and a hollow vertical rail on the front and rear sides of the connecting base portion. A pair of left and right widthwise projections projecting through a longitudinal groove that accepts a pair of protrusions at the end of the groove opening A fitting part, a downwardly inclined hook-and-hold piece arranged so as to be able to project back and forth on the connecting base vertical beam facing surface between the vertical beam fitting parts, and a hollow vertical beam protruding forward and backward from the lower end of the connection base A mounting closing plate and a positioning protrusion standing at the tip of the mounting closing plate in the protruding direction, and the hollow vertical beam is connected to the groove opening end ridge. A pair of left and right ribs standing upright in the hollow portion so as to receive and fit the fitting portion, and the hooking lock of the above-mentioned connecting lower beam arranged by partially notching the lower end vicinity of the pair of protrusions at the groove opening end portion A notch hole for receiving and locking the piece is formed, and the pair of protrusions at the groove opening end of the hollow vertical beam is connected to the vertical beam fitting portion along the vertical groove of the lower beam. By press-fitting and fitting between the pair of ribs, the hooking and locking pieces of the connecting lower beam are inserted into the notch holes in the pair of protrusions at the groove opening end. Each of them is elastically locked, and the lower end of the hollow vertical beam is mounted on the mounting closing plate, and the positioning projection is positioned and engaged inside the front wall of the hollow vertical beam. It is the vertical frame of the telescopic gate.

  In addition to the above, the invention according to claim 2 makes the elastic locking as simple as possible by arranging a pair of the hook locking pieces in the left-right width direction of the connecting lower rail. The hook engaging piece in the above-mentioned lower connecting beam is fixed so that the hook engaging piece is independently engaged with each notch hole of the hollow vertical beam so that the engagement is stabilized. A pair of stopper pieces are arranged in the left-right width direction on the front and rear side surfaces of the connecting base, respectively, to form a vertical frame of the telescopic gate according to claim 1.

  In addition to the above, the invention described in claim 3 is provided with a pair of positioning projections of the mounting blocking plate for mounting and closing the hollow vertical beam at the tip corner position thereof, thereby connecting the hollow vertical beam to the hollow vertical beam. In order to provide a reliable guide function when press-fitting the crosspieces to facilitate the press-fitting and to ensure that the lower crosspiece is securely connected to the hollow vertical crosspiece, The vertical frame of the telescopic gate door according to claim 1 or 2, wherein a pair of positioning protrusions standing on the mounting block plate in the crosspiece are arranged at the front end corner position in the protruding direction of the mounting block plate. Is.

  In addition to the above, the invention described in claim 4 is characterized in that, in addition to the above, the standing height of the positioning protrusion is the dimensional difference between the notch height of the notch hole of the hollow vertical beam and the height of the hooking locking piece, that is, the notch hole. And lower than the height of the clearance gap in the locked state of the hook locking piece, and by providing a dimensional difference in the height between both the positioning projection and the clearance gap, the connected lower beam is slightly lowered from the hollow vertical beam. In such a state, the lower end of the hollow vertical beam by the positioning protrusion is released, and the notch hole of the hollow vertical beam and the latching piece of the connecting lower beam can be easily released, In order to enable simple and reliable removal of the lower connecting beam, the height of the positioning projections raised on the mounting block plate in the lower connecting beam is defined as the end of the groove opening in the hollow vertical beam. The height of the cutout holes arranged in the notch on the pair of protrusions It is obtained by the vertical frame of the telescopic gates according to claim 1, 2 or 3, characterized by being formed lower than the dimensional difference of the height of Kakegakari locking pieces.

  In addition to the above, the invention described in claim 5 can stably and reliably perform the positioning engagement of the positioning projection with respect to the hollow vertical beam, and even if an external force in the twist direction acts on the hollow vertical beam, In order to ensure that the torsion can be reliably suppressed, the front wall of the hollow vertical beam is provided with a receiving groove that is recessed in the center and that receives the positioning projections of the connecting lower beam at both ends in the lateral width direction. It is set as the vertical frame of the expansion-contraction gate door of Claim 1, 2, 3 or 4 characterized by the above-mentioned.

  In addition to the above, the invention according to claim 6 is also provided in such a manner that the hollow vertical beam and the connecting lower beam are suitable for the vertical frame of the telescopic gate. It is made of aluminum formed by cutting and notching to the above and the connecting lower crosspiece is made of synthetic resin formed by injection molding of synthetic resin. 5 is a vertical frame of the telescopic gate described in 5.

  The present invention uses these as the gist of the present invention and as means for solving the above problems.

  Since the present invention is configured as described above, the invention according to claim 1 is configured such that the connection between the hollow vertical beam and the connecting lower beam is performed at the contact surface between the hollow vertical beam and the connecting lower beam. A mounting for holding the lower end of the hollow vertical beam placed on the connecting lower beam by locking the hook locking pieces protruding to the front and rear front sides of the lower connecting beam in the notch holes formed in the pair of end ridges. Positioning projections standing on the closing plate are inserted into the hollow part of the hollow vertical beam and engaged with the inside of the front wall, and the pair of vertical beam fittings in the left and right width direction of the connecting lower beam are hollow. By fitting and holding between the pair of protrusions at the groove opening end of the vertical beam and the pair of ribs in the hollow portion of the hollow vertical beam, the relative positional relationship between the hollow vertical beam and the connecting lower beam is regulated, Even if an external force in the twisting direction acts on the hollow vertical beam, the twisting is suppressed, and even if some twisting occurs, the locking hole and the hooking locking piece can be locked. By suppressing as much as possible the possibility of detaching the connected lower beam from the hollow vertical beam, the lower end of the hollow vertical beam is placed by the mounting blocking plate described above the connected lower beam, The lower end of the hollow vertical beam is closed to prevent the exposure of the cut surface at the lower end of the hollow vertical beam, and the possibility of damage and appearance damage due to exposure of the cut surface is eliminated, enabling as simple and reliable connection as possible. And a vertical frame of the telescopic gate capable of ensuring excellent connection strength including twisting of the hollow vertical beam.

  In addition to the above, the invention according to claim 2 makes the elastic locking as simple as possible by arranging a pair of the hook locking pieces in the left-right width direction of the connecting lower rail. In addition, the hooking and locking pieces can be locked independently in the respective cutout holes of the hollow vertical beam so that the locking can be stabilized.

  In addition to the above, the invention described in claim 3 is provided with a pair of positioning projections of the mounting blocking plate for mounting and closing the hollow vertical beam at the tip corner position thereof, thereby connecting the hollow vertical beam to the hollow vertical beam. A reliable guide function can be exhibited during the press-fitting of the crosspieces, facilitating the press-fit fitting, and the connection of the lower crosspieces to the hollow vertical crossings can be reliably performed.

  In addition to the above, the invention described in claim 4 is characterized in that, in addition to the above, the standing height of the positioning protrusion is the dimensional difference between the notch height of the notch hole of the hollow vertical beam and the height of the hooking locking piece, that is, the notch hole. And lower than the height of the clearance gap in the locked state of the hook locking piece, and by providing a dimensional difference in the height between both the positioning projection and the clearance gap, the connected lower beam is slightly lowered from the hollow vertical beam. In such a state, the lower end of the hollow vertical beam by the positioning protrusion is released, and the notch hole of the hollow vertical beam and the latching piece of the connecting lower beam can be easily released, It is possible to easily and reliably remove the lower connecting rail.

  In addition to the above, the invention described in claim 5 can stably and reliably perform the positioning engagement of the positioning projection with respect to the hollow vertical beam, and even if an external force in the twist direction acts on the hollow vertical beam, It is possible to reliably suppress twisting.

  In addition to the above, the invention according to claim 6 can make the hollow vertical beam and the connecting lower beam suitable for the vertical frame of the telescopic gate.

It is a front view of a telescopic gate. It is a partial notch perspective view except the vertical cross fitting part which shows the relationship between a hollow vertical cross and a connection lower cross. It is a partial notch perspective view except the vertical cross fitting part which shows the state in the middle of the connection of a hollow vertical cross and a connection lower cross. It is a partial notch perspective view except the vertical cross fitting part which shows the connection state of a hollow vertical cross and a connection lower cross. It is a cross-sectional view of a hollow vertical beam. It is a perspective view of a connection lower crosspiece. It is a longitudinal cross-sectional view which shows the connection state in the front side of a hollow vertical cross and a connection lower cross. It is a longitudinal cross-sectional view which shows the connection state in the side surface side of a hollow vertical cross and a connection lower cross.

  In the following, the present invention will be described in more detail with reference to the examples of the drawings. Reference numeral 1 denotes a telescopic gate, and the telescopic gate 1 is a pair of hollow vertical doors having a C-shaped cross section and opposed groove openings arranged in parallel in the front-rear direction. The vertical frame 11 in which the lower end of the crosspiece 2 is connected by a short connecting lower crosspiece 3 is received and supported by the telescopic links 12 in the hollow portions of the multiple hollow vertical crosspieces 2 through the groove openings of the hollow vertical crosspiece 2. It is assumed that it is connected to be extendable in the left-right width direction, one end in the left-right width direction is suspended and supported by the suspension base column 13, and can be opened and closed between the door support column 14 at the other end. The hollow vertical beam 2 in the telescopic gate 1 is made of aluminum formed by cutting and notching an aluminum extruded material, and the connecting lower beam 3 is formed by injection molding a synthetic resin. As the made synthetic resin, the telescopic gate 1 is made of aluminum. There as.

  At this time, in the vertical frame 11, the connection lower beam 3 includes the hollow connection base 31 interposed between the opposed surfaces of the hollow vertical beam 2, and the hollow vertical beam on the front and rear sides of the connection base 31. A pair of vertical beam fitting portions 32 projecting through a vertical groove 36 that receives the pair of protrusions 21 at the two groove opening ends, and a connecting base portion 31 between the vertical beam fitting portions 32 and the vertical beam facing each other The hooking and locking piece 33 having a downward slope arranged on the surface so as to be able to project back and forth, the mounting closing plate 34 of the hollow vertical beam 2 protruding back and forth from the lower end of the connection base 31, and the protrusion of the mounting closing plate 34 A positioning projection 35 erected at the front end in the direction is formed to receive the vertical beam fitting portion 32 of the connecting lower beam 3 between the hollow vertical beam 2 and the pair of protrusions 21 at the groove opening end. A pair of left and right ribs 23 erected oppositely in the hollow portion so as to partition, and the vicinity of the lower ends of the pair of protrusions 21 at the groove opening end portions The hook locking piece 33 of the coupling under crosspieces disposed min to switching devoid are formed with a notch hole 22 for receiving locking.

  That is, the connecting lower rail 3 is formed by injection molding the synthetic resin, so that the connecting base portion 31 is hollowed and the back surface is opened, and a pair of vertical beam fitting portions 32 in the left-right width direction is provided before and after the connecting base portion 31. And the mounting blocking plate 34 are integrally arranged so as to be symmetrical from the longitudinal center of the coupling base 31, and in this example, the hooking locking piece 33 of the coupling lower rail 3 is connected to the coupling base 31. A pair of positioning protrusions 35 are arranged on the front and rear side surfaces of 31 in the left-right width direction, and a pair of positioning protrusions 35 standing on the mounting closing plate 34 are arranged at the front end corner position in the protruding direction of the mounting closing plate 34. is there.

  At this time, the vertical beam fitting portion 32 is folded to both ends of the narrow bottom wall and the bottom wall in parallel to the front and rear sides so as to form an S-shaped cross section from the positions in the vicinity of both ends of the front and rear sides of the coupling base 31. A vertical groove 36 having a U-shaped cross section is formed between the front and rear side surfaces by the curved side wall, and a wall surface is formed by projecting a tip of the vertical groove 36 into the hollow portion of the hollow vertical beam 2 and the side wall is thick below. It is said that it was fleshed and reinforced.

  The hook locking pieces 33 are arranged so that a pair of parallel projections protrude downward from the front and rear side surfaces between the bottom walls that define the U-shaped vertical grooves 36 at the upper and lower intermediate positions of the front and rear side surfaces of the connection base 31. The hollow vertical beam 2 side surface is inclined downward and protrudes toward the hollow vertical beam 2 side. At this time, the front and rear side surfaces of the hollow base 31 are located at the upper and lower intermediate positions where the hooking and locking pieces 31 are disposed. By partially notching the lower part, when the inclined surface of the hook locking piece 31 receives a downward pressing force, the front and rear side surfaces are elastically immersed in the front and rear side of the connecting base 31 and the front and rear side surfaces thereof. On the other hand, it can be sunk freely.

  The mounting blocking plate 34 is formed in a rectangular ring shape along the shape of the hollow vertical beam 2 that forms a seat for receiving the lower end of the hollow vertical beam 2, and in this example, a through hole is provided to reduce the amount of resin used. It is a flat rectangular shape, and positioning protrusions 35 are arranged at the corners in the protruding direction at the tip corners, for example, by standing at a height of about 2 to 3 mm and with low protruding protrusions with tapered upper ends. The standing height of the protrusion 35 is set to be lower than the dimensional difference between the height of the notch hole 22 in the hollow vertical beam 2 and the height of the hooking and locking piece 33 of the lower connecting beam 3.

  In this example, the hollow vertical beam 2 has a C-shaped cross section, and the front wall of the hollow vertical beam 2 is recessed in the center and has receiving grooves 24 for receiving the positioning protrusions 35 of the connecting lower beam 3 at both ends in the left-right width direction. Further, the pair of left and right ribs 23 is narrower than the width of the ridge 21 so as to be positioned on the back side of the pair of ridges 21 at the end of the groove opening of the hollow portion, for example, 2 to 3 mm. It is arranged so as to protrude to a small width. At this time, the cutout holes 22 of the pair of ridges 21 are arranged in the lower position of the hollow vertical rail 2 with the ridges 21 being partially cut out, for example, in a U-shape. The cutout hole 22 has a height that is higher than the height of the positioning projection 35, for example, several mm, for example, about 1 to 2 mm, to the height of the hooking and locking piece 33 of the connecting lower rail 3. Moreover, about 1/2 to 1/3 of the width | variety of each hook latching piece 33 is received, and it has the lateral width which can latch this hook latching piece 33 reliably.

  The connecting lower beam 3 and the hollow vertical beam 2 formed as described above are fitted into the vertical beam along the vertical groove 36 of the lower beam 3 by connecting the pair of protrusions 21 at the groove opening end portion of the hollow vertical beam 2. By pressing and fitting the portion 32 between the protrusion 21 and the pair of ribs 23, the hook locking piece 33 of the lower link 3 is respectively connected to the notch hole 22 in the pair of protrusions 21 at the groove opening end. The telescopic gate 1 assumes that the lower end of the hollow vertical beam 2 is mounted on the mounting block plate 34 and the positioning projection 35 is positioned and engaged inside the front wall of the hollow vertical beam 2 while being elastically locked. A number of vertical frames 11 are formed.

  That is, the lower connecting rail 3 inserts the lower end of the pair of protruding ridges 21 into the vertical groove 36 with respect to the parallel pair of hollow vertical beams 2 after or before the installation of the upper beam (not shown). At the same time, the vertical beam fitting portion 32 of the lower connecting beam 3 is inserted between the pair of protrusions 21 and the ribs 23, and the hooking locking pieces 33 are engaged with the cutout holes 22 of the pair of protrusions 21, and The positioning projection 35 only needs to be received and engaged with the receiving groove 24 of the hollow vertical beam 2, whereby the lower connecting beam 3 is firmly and securely fixed to the lower end of the hollow vertical beam 2, and the vertical frame of the telescopic gate door 1. 11, even if a torsional force is applied, the connection strength can be ensured. In this example, the standing height of the positioning protrusion 35 is set to the notch hole 22 and the hooking engagement piece as described above. Since the height difference is regulated to be lower than the height 33, the positioning lower projection 3 Is removed from the hollow vertical beam 2, and the hollow vertical beam 2 is pulled away from the lower connecting beam 3, the locking of the notch hole 22 and the hook locking piece 33 is released, and the lower connecting beam 3 is It can be easily removed.

  In the figure, 15 indicates a caster, and 16 indicates a handle.

  The illustrated example is as described above. For example, the present invention may be implemented by including the hook locking pieces as a series on the left and right sides and integrally locking with the locking holes of the pair of protrusions. In each case, the vertical frame, the vertical beam, the connecting lower beam, the connecting base, the vertical beam fitting portion, the hook locking piece, the mounting block plate, the positioning projection, etc. Additions to these may take various forms as long as they do not contradict the gist of the invention.

DESCRIPTION OF SYMBOLS 1 Telescopic gate 11 Vertical frame 12 Telescopic link 13 Suspension support column 14 Door support column 15 Caster 16 Handle 2 Hollow vertical beam 21 Projection 22 Notch hole 23 Rib 24 Receiving groove 3 Connection lower beam 31 Connection base 32 Vertical beam fitting part 33 Hook latching piece 34 Placement closing plate 35 Positioning projection 36 Vertical groove

Claims (6)

  The lower ends of a pair of hollow vertical bars arranged in parallel in the front-rear direction with the groove openings facing each other with a C-shaped cross section are connected by a short connecting lower bar, and are expanded and contracted to the hollow portions of many hollow vertical bars through the groove openings. A vertical frame of a telescopic gate door that is connected to each of the receiving shafts so as to be extendable in the left-right width direction, and includes a hollow connection base portion between the opposing surfaces of the hollow vertical beam, and the connection A pair of vertical beam fitting portions projecting through a longitudinal groove that receives a pair of protrusions on the front and rear sides of the hollow vertical beam on the front and rear sides of the base, and a connecting base vertical length between the vertical beam fitting portions A downwardly-sloping hook engaging piece arranged to be able to project back and forth on the cross-facing surface, a mounting block plate of a hollow vertical beam protruding forward and backward from the lower end of the connection base, and a protruding end of the mounting block plate It is formed with standing positioning projections, and the hollow vertical beam is formed between the groove opening end protrusions and the connecting lower beam. A pair of left and right ribs that stand upright in the hollow portion so as to receive the beam fitting portion, and a hooking mechanism for the above-mentioned connecting lower beam that is arranged by partially notching the vicinity of the lower ends of the pair of protrusions at the end of the groove opening A notch hole for receiving and locking the stop piece is formed, and the pair of protrusions at the groove opening end portion of the hollow vertical beam is connected to the vertical beam fitting portion along the vertical groove of the connecting lower beam. And the pair of ribs by press-fitting to each other, the groove opening end portions of the pair of protrusions are elastically locked to the notch holes of the pair of protrusions, and the mounting blockage thereof is respectively closed. A vertical frame for a telescopic gate, wherein a lower end of a hollow vertical beam is placed on a plate, and a positioning projection thereof is positioned and engaged inside a front wall of the hollow vertical beam.   2. The vertical frame of the telescopic gate according to claim 1, wherein a pair of hook-and-hold pieces on the connecting lower bar are arranged on the front and rear side surfaces of the connecting base portion in the left-right width direction.   The longitudinal extension of the telescopic gate according to claim 1 or 2, characterized in that a pair of positioning projections standing on the mounting block plate in the connecting lower beam are arranged at the front end corner position in the protruding direction of the mounting block plate. frame.   The height of the positioning protrusions standing on the mounting block plate in the lower connecting rail, the height of the notch holes notched in the pair of protrusions at the end of the groove opening in the hollow vertical rail, and the engagement of the lower connecting rail The vertical frame of the telescopic gate according to claim 1, 2 or 3, wherein the vertical frame is formed to be lower than a dimensional difference in height of the stopper piece.   The front wall of the hollow vertical beam is provided with receiving grooves for receiving the positioning projections of the connecting lower beam at both ends in the left-right width direction with the center recessed. Vertical frame of the telescopic gate described.   The hollow vertical beam is made of aluminum formed by cutting and notching an aluminum extruded material, and the connecting lower beam is made of a synthetic resin formed by injection molding a synthetic resin. The vertical frame of the expansion-contraction gate door of claim | item 1, 2, 3, 4 or 5.

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