JP2012202026A - Expansion gate - Google Patents

Abstract

Disclosed is a telescopic gate provided with a pantograph mechanism having two upper and lower pantographs, which can be reduced in weight and facilitated in opening and closing operations, and has excellent shielding feeling and good appearance.
An uppermost intersection C1 connected to a vertical lattice 8 of an upper pantograph mechanism 5 is pivotally connected to a fixed position of the vertical lattice 8 via a fixed type pin shaft 4a. The intersection C2 other than the uppermost portion connected to the vertical lattice 8 of the pantograph mechanism 5 in the same upper stage is connected to the vertical lattice 8 via a movable pin shaft 4b so as to be vertically slidable. The lowermost intersection C4 connected to the vertical grid 8 of the lower pantograph mechanism 6 is pivotally connected to a fixed position of the vertical grid 8 via a fixed type pin shaft 4a. Intersections C2 other than the lowermost part connected to the vertical lattice 8 of the mechanism 6 are connected to each other via a movable pin shaft 4b so as to be slidable up and down.
[Selection] Figure 1

Description

  The present invention relates to a telescopic gate in which a door body expands and contracts by a two-stage pantograph mechanism.

  As this type of telescopic gate, for example, as shown in FIG. 17, a plurality of slant members 60 inclined upward from the suspension base and a slant member 61 inclined downward from the suspension base are crossed, and an intersection is formed. It is formed at an intermediate portion in the vertical direction between the upper and lower pantograph mechanisms 63 and 64, which are pivotally attached to the pin shafts 69, 71 and 72 and configured to be extendable and between the upper and lower pantograph mechanisms 63 and 64. Further, a non-pantograph mechanism zone 65 in which no pantograph mechanism exists, an upper pantograph mechanism 63, a non-pantograph mechanism zone 65, and a lower pantograph mechanism 64 are arranged in the vertical direction, and a predetermined intersection of the intersection groups. A door main body 67 having a plurality of vertical frame members (vertical lattices) 66 extending in the extending and contracting direction connected to the pantograph mechanisms 63 and 64 is formed. Is a concatenation of the side end to the fixing member such as Tsumotohashira 68 (e.g., see Patent Document 1.). According to this, since the non-pantograph mechanism zone 65 is formed between the upper pantograph mechanism 63 and the lower pantograph mechanism 64 of the door body 67, the advantage of reducing the weight of the entire telescopic gate and facilitating the opening and closing operation accordingly. There is.

JP 2004-11152 A (FIG. 1)

  However, in the telescopic gate configured as described above, the upper and lower pantograph mechanisms 63, 64 are fixedly fixed at the upper and lower intermediate portions by the fixed pin shaft 69 with respect to the vertical frame member (vertical lattice) 66. Since the upper and lower intersections of 63 and 64 are connected to a vertical frame member (vertical lattice) 66 through movable pin shafts 71 and 72 so as to be vertically slidable, when the door body 67 is extended and closed, The movable pin shafts 71 and 72 at the upper and lower intersections of the pantograph mechanisms 63 and 64 operate so as to approach the fixed pin shaft 69 at the middle of the upper and lower portions. ) The gap between the upper and lower ends between 66 and 66 is greatly increased, the feeling of shielding as a gate is reduced by half and the appearance is also deteriorated.

  The present invention has been made to solve such a problem, the purpose of which is as described above, in an extendable gate with an upper and lower two-stage pantograph mechanism and a non-pantograph mechanism zone, Providing a telescopic gate that can reduce weight and ease opening and closing operations, and can prevent a reduction in shielding feeling by half and improve the appearance by devising the connecting means to the vertical lattice at the intersection of each pantograph mechanism It is in.

  As described in claim 1, the present invention will be described with reference to the reference numerals in FIGS. 1 to 15 in order to make the contents of the invention easier to understand. The slanting member 2 inclined upward (to the right in FIG. 5) and the slanting member 3 inclined to the lower side of the suspension (downward to the right in the figure) are crossed, and the crossing portion is pivotally attached to the pin shaft so as to be stretchable. The upper and lower pantograph mechanisms 5 and 6, the non-pantograph mechanism zone 7 having no pantograph mechanism formed in the middle in the vertical direction between the upper pantograph mechanism 5 and the lower pantograph mechanism 6, and the upper pantograph It is arranged in the vertical direction across the mechanism 5, the non-pantograph mechanism zone 7, and the lower pantograph mechanism 6, and is coupled to the pantograph mechanisms 5 and 6 at a predetermined intersection in the intersection group. A vertical lattice of the pantograph mechanism 5 in the upper stage in a telescopic gate that forms a door main body 9 having a plurality of vertical lattices 8 and connects a suspension base side end of the door main body 9 to a fixing member such as a suspension pillar 10. 8 is connected to the vertical lattice 8 of the pantograph mechanism 5 in the same upper stage, and is pivotally connected to a fixed position of the vertical lattice 8 via a fixed type pin shaft 4a. The crossing portion C2 other than the uppermost portion is connected to the vertical lattice 8 through a movable pin shaft 4b so as to be vertically slidable, and the lowermost portion connected to the vertical lattice 8 of the lower pantograph mechanism 6 is connected. The intersecting portion C4 is pivotally connected to a fixed position of the vertical lattice 8 via a fixed type pin shaft 4a so as to be pivotable, and is an intersection other than the lowermost portion connected to the vertical lattice 8 of the lower pantograph mechanism 6. C2 is slidable up and down via a movable pin shaft 4b. In which it characterized in that it is.

  According to the telescopic gate having such a configuration, the presence of the pantograph mechanism at the middle in the vertical direction between the upper pantograph mechanism 5 and the lower pantograph mechanism 6 as in the conventional telescopic gate shown in FIG. Since the non-pantograph mechanism zone 7 is not formed, it is possible to reduce the weight of the entire telescopic gate and facilitate the opening and closing operation while ensuring a feeling of shielding.

  In particular, the uppermost intersection C1 connected to the vertical lattice 8 of the upper pantograph mechanism 5 is pivotally connected to a fixed position of the vertical lattice 8 via a fixed type pin shaft 4a. The crossing portion C2 other than the uppermost portion connected to the vertical lattice 8 of the pantograph mechanism 5 is connected to the vertical lattice 8 through a movable type pin shaft 4b so as to be slidable up and down, and the vertical lattice of the lower pantograph mechanism 6 is connected. 8 is connected to the vertical lattice 8 of the lower pantograph mechanism 6 so that the lowermost intersection C4 is pivotally connected to a fixed position of the vertical lattice 8 via a fixed type pin shaft 4a. The intersecting portion C2 other than the lowermost portion is connected through a movable type pin shaft 4b so as to be slidable up and down. Therefore, when the door body 9 is extended and closed, the intersection C2 other than the uppermost portion connected to the vertical lattice 8 of the upper pantograph mechanism 5 slides upward with respect to the vertical lattice 8 via the movable pin shaft 4b. The crossing portion C2 other than the lowermost portion that moves and is connected to the vertical lattice 8 of the lower pantograph mechanism 6 slides downward via the movable pin shaft 4b, but the vertical lattice 8 of the upper pantograph mechanism 5 The uppermost intersection C1 connected to the vertical lattice 8 is fixed at a fixed position of the vertical lattice 8, and the lowermost intersection C4 connected to the vertical lattice 8 of the lower pantograph mechanism 6 is fixed at a fixed position of the vertical lattice 8, respectively. Since the fixing is performed through the pin shaft 4a, a large gap is generated between the upper and lower ends between the adjacent vertical lattices 66 and 66 of the door main body 67 as in the conventional telescopic gate shown in FIG. Can avoid Can prevent lowering half of 蔽感, can be secured shielding sense of gates, visual quality can be improved.

  As described in claim 2, the telescopic gate according to claim 1 has an angle θ1 formed by the slant members 2 and 3 and the vertical lattice 8 of the lower pantograph mechanism 6 in the closed state where the door body 9 is extended. A configuration in which the angle θ2 formed by the oblique members 2 and 3 of the upper pantograph mechanism 5 and the vertical lattice 8 is set smaller can be employed. According to this configuration, in the closed state where the door body 9 is extended, the angle θ1 formed by the oblique members 2 and 3 of the lower pantograph mechanism 6 and the vertical lattice 8 and the oblique members 2 and 3 of the upper pantograph mechanism 5 are set. Is equal to the angle θ2 formed by the vertical lattice 8, that is, compared to the case where the oblique members 2 and 3 of the lower pantograph mechanism 6 and the oblique members 2 and 3 of the upper pantograph mechanism 5 are arranged in parallel, Since the vertical interval of the non-pantograph mechanism zone 7 can be narrowed, the shielding feeling of the telescopic gate 1 can be further increased accordingly.

As described in claim 3, the telescopic gate according to claim 1 or 2 is configured such that the distance between the intersections of the oblique members 2 and 3 on the upper side of the door main body 9 is set to be oblique to the lower side of the door main body 9. It is possible to adopt a configuration in which the distance is set smaller than the distance between the intersections of the frames 2 and 3. In this case, the “intersection” between the intersections does not ask the presence or absence of the pin axis.
Thus, even in a so-called hanger-type telescopic gate that connects the suspension side end of the door body 9 to a fixing member such as the suspension column 10 without applying wheels or casters to the lower part of the door body 9, the door body When the door 9 is extended and closed, it is possible to prevent the moving side end of the door body 9 from hanging down.

  According to the telescopic gate of the present invention, the weight can be reduced and the opening / closing operation can be facilitated, and the shielding feeling can be ensured and the appearance can be improved.

It is a whole front view which shows the expansion | extension state of the expansion-contraction gate of one Example of this invention. It is a front view which shows the slanting material of the pantograph mechanism of the upper stage of the expansion-contraction gate door in a partially broken state. It is a vertical side view provided with various pin shafts in the slanting member of FIG. It is a front view which shows the slanting material of the pantograph mechanism of the lower stage of the expansion-contraction gate door in a partially broken state. It is a vertical side view provided with various pin shafts in the slanting member of FIG. It is sectional drawing in the cross | intersection part C1 in FIG. It is sectional drawing in the cross | intersection part C2 in FIG. It is sectional drawing in the crossing part C3 in FIG. It is sectional drawing in the cross | intersection part C4 in FIG. It is sectional drawing in the cross | intersection part C5 in FIG. The end cap used for the said expansion gate is shown, Comprising: (a) is a top view, (b) is a front view, (c) is a side view, (d) is a bottom view. It shows the other end cap used for the telescopic gate, wherein (a) is a plan view, (b) is a front view, (c) is a side view, and (d) is a bottom view. The intersection pin axis used for the telescopic gate is shown, wherein (a) is a plan view, (b) is a cross-sectional view taken along line AA in (a), and (c) is a bottom view. The bush for fixation used for the expansion-contraction gate is shown, Comprising: (a) is a top view, (b) is a BB sectional drawing in (a), (c) is a bottom view. The cap of the bush for fixation used for the expansion-contraction gate is shown, Comprising: (a) is a top view, (b) is CC sectional view taken on the line in (a), (c) is a bottom view. It is the whole front view which shows the expansion | extension state of the expansion-contraction gate in a zero gravity state. It is a whole front view which shows the expansion | extension state of the expansion-contraction gate of a prior art example.

  Preferred embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the telescopic gate 1 according to the present invention includes a plurality of slant members 2 inclined upward (upward to the right in the figure) and downward suspension side (downward in the figure). The slanted frame 3 intersects, and the intersecting part is pivotally attached by various pin shafts (fixed type pin shaft 4a, moving type pin shaft 4b, intersection pin shafts 4c, 4d described later) and is configured to be extendable and contractible. The upper and lower two-stage pantograph mechanisms 5, 6 and the non-pantograph mechanism zone 7 without the pantograph mechanism formed in the middle in the vertical direction between the upper pantograph mechanism 5 and the lower pantograph mechanism 6, and the upper stage The pantograph mechanism 5, the non-pantograph mechanism zone 7, and the lower pantograph mechanism 6 are arranged in the vertical direction and connected to the pantograph mechanisms 5 and 6 at a predetermined intersection in the intersection group. A plurality of vertical lattice 8 in a direction, forming a door body 9 having a is obtained by connecting the Tsumoto end of the door body 9 to the fixing member such as Tsumotohashira 10.

The door main body 9 is disposed between a hanging pillar 10 and a door-to-door pillar 11 that are erected on the ground G in a mutually opposing manner with a spacing left and right. The telescopic door of the present invention can be suitably used for a relatively narrow frontage in which the distance between the inner end surface of the suspension column 10 and the inner end surface of the door stopper column 11 is about 900 to 1700 mm.
A rotary column 12 is provided at the suspension side end of the door body 9, and the rotation column 12 is attached to the suspension column 10 via a hinge 13 so as to be rotatable by 180 ° in the horizontal direction.
On the other hand, a movable pillar 14 is provided at the door end side end of the door body 9, and a lock 15 is provided on the movable pillar 14, and the movable pillar 14 can be locked and unlocked to the door stopper 11 by the lock 15. Yes. On both front and rear sides of the movable column 14, handles 16 for extending and retracting the door main body 9 are provided. In addition, a drop rod device 17 is provided on the movable column 14, and when the door main body 9 is fully closed, a lower end portion of the drop rod 17a is fitted into a hole (not shown) drilled in the ground G. The expansion and contraction operation of the door body 9 is prevented.

  Between the rotating column 12 and the moving column 14, there are two upper and lower pantograph mechanisms 5 and 6 that can be expanded and contracted. In order to reduce the weight of the entire telescopic gate and facilitate the opening and closing operation, a non-pantograph mechanism zone 7 having no pantograph mechanism is provided at the middle in the vertical direction between the upper pantograph mechanism 5 and the lower pantograph mechanism 6. Forming. Each of the pantograph mechanisms 5 and 6 includes a plurality of slant members 2 inclined upward (upward to the right in the figure) and slant members 3 inclined to the bottom of the suspension (down to the right in the figure), It is composed of a plurality of vertical lattices 8 in the expansion / contraction direction. The front and rear vertical frames 8a and 8b of the vertical lattice 8 are, as shown in the cross-sectional views of FIGS. 6, 7, and 9, a web 19 for forming a concave groove 18 on each outer surface side in the vertical direction, and this It is formed in a cross-sectional lip groove shape having a pair of left and right flanges 20 connected to the left and right ends of the web 19 and a lip 21 attached to each of the left and right flanges 20. A vertical lattice cover 22 having a π-shaped cross section is fitted into the groove 18.

As shown in FIGS. 6 to 10, each of the slanting member 2 rising from the suspension side and the slanting member 3 descending from the suspension side has a pair of long side portions 23, 23, 24 made of aluminum. -It consists of a square-shaped (rectangular) pipe material having 24 and short side portions 25, 25, 26, 26, and ribs 27, 28 are formed on the inner surfaces of the long side portions 23, 24 of the oblique members 2, 3 Has been.
In the extension operation of the door body 9, the corners of the upper and lower ends of the oblique members 2 and 3 are not protruded from the width direction of the vertical lattice 8 to improve the appearance, and the door body 9 is compactly folded. 2 and 4, as shown in FIGS. 2 and 4, the upper edge 23a, 24a and the lower edge 23b, 24b of each of the long sides 23, 24 of the oblique members 2, 3 are respectively The oblique members 2 and 3 are cut into a convex arc shape that is a semicircular shape having a length corresponding to each width. Accordingly, the upper edge 25a, 26a and the lower edge 25b, 26b of each short side portion 25, 26 are cut off.

  As shown in FIGS. 2 to 5, upper end edges 23 a and 24 a and lower end edges 25 b and 26 b of the long side parts 23 and 24 are convex at the upper and lower end parts of the oblique members 2 and 3, respectively. Resin or metal end caps 29 are inserted and fitted, respectively, in order to adopt a reinforcing measure for preventing bending deformation from the shape formed at the free end of the arc shape. As shown in FIGS. 11 and 12, the end cap 29 has an insertion leg portion 29a that fits in each internal space of the oblique members 2 and 3, and the head side edge 29b of the insertion leg portion 29a. Is formed in a convex arc shape that matches the convex arc shape of the upper end edges 23a, 24a and the lower end edges 25b, 26b of the long sides 23, 24 of the oblique members 2, 3, and the head side edge of this convex arc shape A collar 30 is formed along the outer periphery of 29b. As shown in FIGS. 2 to 4, with the end caps 29 inserted into the upper end portions and the lower end portions of the oblique members 2, 3, the eaves 30 are connected to the long side portions 23 of the oblique members 2, 3. , 24 are formed in contact with the upper end edges 23a, 24a, the lower end edges 23b, 24b and the upper end edges 25a, 26a and the lower end edges 25b, 26b of the short sides 25, 26, respectively. As shown in FIGS. 11 and 12, the insertion leg portion 29a of each end cap 29 has holes 31 through which pin shafts 4a, 4b, 4d and various bushes 34, 37, 38, 43 described later are inserted, and ribs. A concave groove 51 is formed to be fitted to the 27 and 28. An end cap 29 shown in FIG. 11 is inserted into the upper and lower ends of the upper oblique members 2 and 3 and the upper ends of the lower oblique members 2 and 3, respectively. An end cap 29 shown in FIG. 12 is inserted into each lower end.

  The slanting member 2 rising from the suspension side and the slanting member 3 falling from the suspension side have various pin shafts (fixed type pin shaft 4a, moving type pin shaft 4b, intersection pin shaft 4c described later) at the intersections. , 4d) and pivotally mounted relative to each other.

  That is, in FIG. 1, the uppermost intersection C1 connected to the vertical lattice 8 of the upper pantograph mechanism 5 is pivotally connected to a fixed position of the vertical lattice 8 via a fixed type pin shaft 4a. The crossing portion C2 other than the uppermost portion connected to the vertical lattice 8 of the pantograph mechanism 5 in the same upper stage is connected to the vertical lattice 8 via a movable pin shaft 4b so as to be slidable up and down.

  As shown in FIG. 6, the fixed type pin shaft 4a at the uppermost intersection C1 connected to the front and rear vertical frames 8a and 8b of the vertical lattice 8 of the upper pantograph mechanism 5 is formed in a hollow shape and has both front and rear ends. The upper ends of the oblique members 2 and 3, the spacer 33 made of an antifriction material interposed between the upper ends of the oblique members 2 and 3, and the oblique members 2 and 3. It pivots so that it may penetrate to the bearing bushes 34 and 34 which consist of an antifriction material interposed between each upper end part and the front-and-rear vertical frames 8a and 8b of the vertical lattice 8, respectively. At that time, when the pin shaft 4a is inserted into the respective upper ends of the oblique members 2, 3, the pin shaft 4a is also inserted into the hole 31 of the insertion leg portion 29a of the end cap 29 inserted into each upper end portion of the oblique members 2, 3. As a result, the end cap 29 is prevented from coming out of the upper ends of the oblique members 2 and 3. Screws 35 are screwed into the female grooves 32 at the front and rear ends of the pin shaft 4a facing the front and rear vertical frames 8a and 8b of the vertical lattice 8 from inside the concave grooves 18 of the vertical lattice 8, thereby fixing the fixed type pin shaft. 4a is fixed in the front and rear vertical frames 8a and 8b of the vertical lattice 8 so as not to move up and down, and there is no change in the vertical position when the door body 9 is extended and contracted. The head portion 35a of the screw 35 is covered with the vertical lattice cover 22 to protect it from rain water to prevent the occurrence of rust and to improve the appearance.

  As shown in FIG. 7, the moving type pin shaft 4b at the intersection C2 other than the uppermost portion connected to the front and rear vertical frames 8a and 8b of the vertical lattice 8 of the upper pantograph mechanism 5 The lower end portions, spacers 36 made of an antifriction material interposed between the lower end portions of the oblique members 2 and 3, the lower end portions of the oblique members 2 and 3, and the longitudinal vertical frames 8a and 8b of the vertical lattice 8 And a bearing bush 37 made of an antifriction material interposed between them. At that time, when the pin shaft 4b is inserted into the lower ends of the oblique members 2 and 3, the pin shaft 4b is also inserted into the hole 31 of the insertion leg portion 29a of the end cap 29 inserted into the lower ends of the oblique members 2 and 3. Thus, the end cap 29 is prevented from coming out from the lower ends of the oblique members 2 and 3. Each of the front and rear bearing bushes 37 has slide grooves 37a and 37a on the left and right sides, and the slide grooves 37a and 37a are slidably fitted to the lips 21 of the front and rear vertical frames 8a and 8b. The pin shaft 4b moves up and down in the grooves of the front and rear vertical frames 8a and 8b of the vertical lattice 8 through the bearing bush 37 when the 9 is expanded and contracted.

  As shown in FIG. 8, the intersection C3 between the upper and lower intermediate portions of the slant members 2 and 3 of the upper pantograph mechanism 5 is pivotally attached to the intersection pin shaft 4c. As shown in FIG. 13, this intersection pin shaft 4c has a cross-sectional hat-shaped fixing bush 38 having a resin flange 38f at one end thereof fixed by insert molding or the like, and a female screw 39 provided at the other end. Yes. As shown in FIG. 8, this intersection pin shaft 4 c has a fixing bush 38 disposed in a hole 40 provided in the upper and lower intermediate portions of the long side portion 23 of one of the slant members 2, and a flange 38 f disposed on the outer periphery of the hole 40. It is fitted and fixed so as to prevent it from coming off, and is inserted into the spacer 41 made of an antifriction material interposed between the upper and lower intermediate parts of the oblique members 2 and 3 and the upper and lower intermediate parts of the oblique members 2 and 3. Then, the other end is projected into the groove of the other oblique member 3. The projecting other end of the intersection pin shaft 4c is fitted and fixed so as to prevent the hook 43f from being arranged on the outer periphery of the hole 42 in the hole 42 provided in the upper and lower intermediate portions of the long side 24 of the other oblique member 3. It is pivotally attached by inserting a screw 44 into a female screw 39 through a hook-shaped fixing bush 43 (see FIG. 14) having a hat shape in section.

  At this time, as shown in FIG. 8, the fixing bush 38 fitted to one of the oblique members 2 is provided with a non-rotating groove 45 in the inner end surface thereof in the radial direction. The slant member 2 is fitted to a rib 27 provided on the inner surface of the long side portion 23 and is coupled to one of the slant members 2 in a non-rotating state. Similarly, a rotation-preventing groove 46 is provided in the radial direction on the inner end face of the fixing bush 43 fitted to the other oblique member 3, and the anti-rotation groove 46 is provided on the long side portion 24 of the other oblique member 3. It is fitted to a rib 28 provided on the inner surface of the other and is connected to the other oblique member 3 in a non-rotating state. Therefore, it is possible to prevent the fixing bushes 38 and 43 from rotating together when the screw 44 is screwed into the female screw 39 of the intersection pin shaft 4c. A cap 47 (see FIG. 15) is fitted into the recess 43 a of the fixing bush 43 to cover the head 44 a of the screw 44 facing the recess 43 a of the fixing bush 43.

  In this way, the head 44a of the screw 44 that fastens the intersection pin shaft 4c of the intersection C3 between the upper and lower intermediate portions of the slant members 2 and 3 does not protrude to the outside. It is possible to ensure safety by placing it so that it sinks in 43a, and the front and rear slant members 2, 3 can be stored compactly between the front and rear vertical frames 8a, 8b of the vertical lattice 8 when the door is opened. The thickness in the direction (depth direction) can be reduced, and the door body 9 can be made thinner and more compact. Further, by covering the head 44a of the screw 44 with the cap 47, it is possible to protect against rainwater and prevent rusting, and to improve the appearance.

In FIG. 1, the crossing portion C2 other than the lowermost portion connected to the front and rear vertical frames 8a and 8b of the vertical lattice 8 of the lower pantograph mechanism 6 is the front and rear vertical frame of the vertical lattice 8 of the upper pantograph mechanism 5 shown in FIG. Similarly to the case of the moving type pin shaft 4b at the intersection C2 other than the uppermost portion connected to the uppermost portion 8a, 8b, the vertical sliding is made via the moving type pin shaft 4b with respect to the front and rear vertical frames 8a, 8b of the vertical lattice 8. It is connected freely.
As shown in FIG. 9, the lowermost intersection C4 connected to the vertical lattice 8 of the lower pantograph mechanism 6 includes front and rear vertical frames 8a and 8b of the vertical lattice 8 of the upper pantograph mechanism 5 shown in FIG. As in the case of the fixed type pin shaft 4a at the uppermost intersection C1 to be connected, the fixed position of the front and rear vertical frames 8a and 8b of the vertical lattice 8 is rotatable via the fixed type pin shaft 4a. It is pivotally connected.

  The intersection pin shaft 4c at the intersection C3 between the upper and lower intermediate parts of the oblique members 2 and 3 of the lower pantograph mechanism 6 is between the upper and lower intermediate parts of the oblique members 2 and 3 of the upper pantograph mechanism 5 shown in FIG. It is pivotally attached with the same structure as that of the intersection pin shaft 4c at the intersection C3.

As shown in FIG. 10, the intersection pin shaft 4d at the intersection C5 of the lower ends of the slant members 2 and 3 of the lower pantograph mechanism 6 has a resin at one end in the same manner as the intersection pin shaft 4c shown in FIG. A fixing bush 38 having a hat-shaped cross section having a flange 38f made of metal is fixed by insert molding or the like, and a female screw 39 is provided at the other end. The intersecting pin shaft 4d is fitted and fixed in a retaining manner so that a fixing bush 38 is disposed in a hole 48 provided at the lower end of one of the oblique members 2 so that a flange 38f is arranged on the outer periphery of the hole 48. The lower end portions of the materials 2 and 3 and the spacer 49 made of an antifriction material interposed between the lower end portions of the oblique members 2 and 3 are inserted into the groove of the other oblique member 3 To protrude.
The protruding other end of the pin shaft 4d is inserted into the hole 50 provided at the lower end of the other oblique member 3 in the same manner as the hooked fixing bush 43 with a hat-shaped cross section shown in FIG. It is pivotally mounted by inserting a screw 44 into the female screw 39 through a hook-shaped fixing bush 43 having a cross-sectional hat shape that is fitted and fixed so as to prevent it from coming off. At that time, when the fixing bush 43 is fitted and fixed to the lower ends of the oblique members 2 and 3, the insertion legs of the end cap 29 shown in FIG. It is also fitted in the hole 31 of the portion 29 a, thereby preventing the end cap 29 from coming out from the lower end portions of the oblique members 2 and 3.

Further, as shown in FIG. 10, the fixing bush 38 fitted to one of the oblique members 2 is provided with a rotation-preventing groove 45 on the inner end surface thereof in the radial direction. It is fitted to a rib 27 provided on the inner surface of the long side portion 23 of the frame member 2 and is coupled to one of the oblique members 2 in a non-rotating state. Similarly, a rotation-preventing groove 46 is provided in the radial direction on the inner end face of the fixing bush 43 fitted to the other oblique member 3, and the anti-rotation groove 46 is provided on the long side portion 24 of the other oblique member 3. It is fitted to a rib 28 provided on the inner surface of the other and is connected to the other oblique member 3 in a non-rotating state. Therefore, it is possible to prevent the fixing bushes 38 and 43 from rotating together when the screw 44 is screwed into the female screw 39 of the intersection pin shaft 4d. A cap 47 is fitted into the concave portion 43 a of the fixing bush 43 to cover and conceal the head portion 44 a of the screw 44 facing the concave portion 43 a of the fixing bush 43.
In this way, the head 44a of the screw 44 that fastens the pin shaft 4d of the intersecting portion C5 between the lower ends of the slanting members 2 and 3 does not protrude to the outside. In order to ensure safety, the front and rear slant members 2 and 3 are stored compactly between the front and rear vertical frames 8a and 8b of the vertical lattice 8 when the door is opened. The thickness in the depth direction) can be reduced, and the door body 9 can be made thinner and more compact. Further, by covering the head 44a of the screw 44 with the cap 47, it is possible to protect against rainwater and prevent rusting, and to improve the appearance.

  Next, the opening / closing operation | movement of the expansion gate 1 of the said structure is demonstrated. First, when the door body 9 is extended from the open state shown by the phantom line F in FIG. 1 and closed as shown by the solid line in FIG. Go to. Then, the intersection C2 other than the uppermost portion connected to the vertical lattice 8 of the upper pantograph mechanism 5 slides upward with respect to the vertical lattice 8 via the moving type pin shaft 4b, and the lower pantograph mechanism 6 The intersection C2 other than the lowermost part connected to the vertical lattice 8 slides downward via the moving type pin shaft 4b, and the door body 9 extends. At that time, the uppermost intersection C1 (fixed type pin shaft 4a) connected to the vertical grid 8 of the upper pantograph mechanism 5 is located at a fixed position of the vertical grid 8, and the vertical grid 8 of the lower pantograph mechanism 6 The connected lowermost intersection C4 (fixed type pin shaft 4a) is also fixed at a fixed position of the vertical lattice 8, and its vertical position does not change. Therefore, like the conventional telescopic gate shown in FIG. 17, it is possible to avoid large gaps on the upper end side and the lower end side between the adjacent vertical grids 66, 66 of the door body 67, thereby preventing a reduction in shielding feeling by half. It is possible to secure a feeling of shielding as a gate, and the appearance is also improved.

Specifically, for example, as shown in FIG. 2, the distance between the intersections of the oblique members 2 and 3 is the intersection C1 and the intersection C3 of the oblique members 2 and 3 of the upper pantograph mechanism 5. The distance d1 between them is 154 mm, and the distance d2 between the intersection C3 and the intersection C2 is 154.5 mm. As shown in FIG. 4, the distance d3 between the intersection C2 and the intersection C3 of the oblique members 2 and 3 of the lower pantograph mechanism 6 is 155 and 5 mm, the distance d4 between the intersection C3 and the intersection C4 is 156 mm, The distance d5 between the intersection C4 and the intersection C5 is 156.5 mm.
Thus, by making the distance between the intersections on the upper side smaller than the distance between the intersections on the lower side, as shown in FIG. 16, the door body 9 or the door body 9 in the weightless state is placed on the ground. When the door body 9 is extended in a laid state (the door main body 9 is placed in a horizontal state and no vertical load is applied to the door main body 9), the door main body 9 extends in a reverse fan shape in which the moving side end gradually rises.
However, when such a suspension side end of the door body 9 is connected to a fixing member such as the suspension pillar 10, the gravity of the door body 9, the pin shafts 4 a, 4 b, 4 c, 4 d in the oblique members 2, 3 and As a result, the door body 9 is drooped at the moving side end due to the clearance of the tilting members 2 and 3 and the like. The lowering amount due to the drooping of the door main body 9 and the rising amount due to the reverse fan-shaped deformation of the door main body 9 in the weightless state are offset, and the door main body 9 moves substantially horizontally. Troubles caused by dripping can be solved.

  After the door body 9 is fully closed as shown in FIG. 1, the movable column 14 is locked to the door-to-door column 11 by the lock 15 provided on the movable column 14 of the door body 9.

  Next, when the door body 9 is contracted and opened from the fully closed state shown by the solid line in FIG. 1, the handle 16 of the moving column 14 of the door body 9 is held and pulled toward the suspension pillar 10 side. Then, the intersection C2 other than the uppermost portion connected to the vertical grid 8 of the upper pantograph mechanism 5 slides downward with respect to the vertical grid 8 via the moving type pin shaft 4b, and the lower pantograph mechanism 6 The intersection C2 other than the lowermost portion connected to the vertical lattice 8 slides upward via the moving type pin shaft 4b and the pantograph mechanisms 5 and 6 contract, and the interval between the adjacent vertical lattices 8 and 8 is reduced. Is uniformly narrowed, so that the door body 9 can be placed in the contracted state on the suspending side (see the state diagram of the phantom line F in FIG. 1).

In the embodiment shown in FIG. 1, in the closed state where the door main body 9 is extended, the angle θ1 formed by the oblique members 2 and 3 of the lower pantograph mechanism 6 and the vertical lattice 8 and the oblique member of the upper pantograph mechanism 5 are shown. 2 and 3 are equal to the angle θ2 formed by the vertical lattice 8, that is, the oblique members 2 and 3 of the lower pantograph mechanism 6 and the oblique members 2 and 3 of the upper pantograph mechanism 5 are arranged in parallel. However, instead of this, in the closed state where the door main body 9 is extended, the angle θ1 formed by the oblique members 2 and 3 of the lower pantograph mechanism 6 and the vertical lattice 8 is the oblique member of the upper pantograph mechanism 5. 2 and 3 and the vertical lattice 8 can be set smaller than the angle θ2.
According to this, in the closed state where the door body 9 is extended, the angle θ1 formed by the slant members 2 and 3 of the lower pantograph mechanism 6 and the vertical lattice 8 and the slant members 2 and 3 of the upper pantograph mechanism 5 Compared to the case where the angle θ2 formed by the vertical lattice 8 is equal, that is, the oblique members 2 and 3 of the lower pantograph mechanism 6 and the oblique members 2 and 3 of the upper pantograph mechanism 5 are arranged in parallel. Since the vertical interval of the pantograph mechanism zone 7 can be narrowed, the shielding feeling of the telescopic gate 1 can be further increased accordingly.

DESCRIPTION OF SYMBOLS 1 Telescopic gate door 2 Lifting side up (right rising) slanting material 3 Hanging side sloping (down right) slanting material 4a Fixed type pin shaft 4b Moving type pin shaft 5 Upper pantograph mechanism 6 Lower pantograph mechanism 7 Non-pantograph mechanism zone 8 Vertical lattice 9 Door body 10 Suspension column C1 Intersection at the uppermost part of the upper pantograph mechanism C2 Intersection other than the uppermost part of the upper pantograph mechanism and intersection other than the lowermost part of the lower pantograph mechanism C4 The lowest intersection of the lower pantograph mechanism

Claims (3)

A two-stage pantograph mechanism composed of a plurality of slanting members inclined upward on the suspension side and slanting members inclined downward on the suspension side and configured to be extendable by pivoting the intersections with pin shafts. A non-pantograph mechanism zone that does not have a pantograph mechanism, formed in an intermediate portion between the upper pantograph mechanism and the lower pantograph mechanism, and the upper pantograph mechanism, the no pantograph mechanism zone, and Forming a door body provided with a plurality of vertical lattices in the expansion and contraction direction arranged in the vertical direction across the lower pantograph mechanism and connected to each pantograph mechanism at a predetermined intersection in the intersection group, In the telescopic gate that connects the suspension base side end of the door body to a fixing member such as a suspension pillar,
The uppermost intersection connected to the vertical grid of the upper pantograph mechanism is pivotally connected to a fixed position of the vertical grid via a fixed type pin shaft, and the vertical grid of the upper pantograph mechanism is pivotally connected. The crossing part other than the uppermost part connected to is connected to the vertical lattice through a movable pin shaft so as to be slidable up and down.
The lowermost cross section connected to the vertical grid of the lower pantograph mechanism is pivotally connected to a fixed position of the vertical grid via a fixed type pin shaft, and the vertical grid of the lower pantograph mechanism is connected. A telescopic gate, characterized in that the intersections other than the lowermost part connected to each other are connected slidably up and down via a movable pin shaft.   In the closed door with the door body extended, the angle θ1 formed between the oblique member of the lower pantograph mechanism and the vertical lattice is set smaller than the angle θ2 formed between the oblique member and the vertical lattice of the upper pantograph mechanism. The telescopic gate according to claim 1.   The distance between the intersections of the oblique members on the upper side of the door body is set to be smaller than the distance between the intersections of the oblique members on the lower side of the door body. Telescopic gate.

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