JPH0714633Y2 - Temporary door for construction sites, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention mainly relates to improvement of a temporary door installed and used in a building construction site or the like.

(Prior Art) Conventionally, there are various kinds of temporary doors of this kind, and one example thereof is that disclosed in Japanese Utility Model Laid-Open No. Sho 64-19798.

As shown in FIG. 9, this conventional one has a structure in which a plurality of vertical rods 2e ... Are mutually connected to each other via a horizontally expandable / contractible connecting body 3e to form a door body 1e.

Thus, casters 6e for movement are provided below the vertical rods 2e ... Of the door main body 1e, but in the past, the casters have been fixed to the vertical rods 2e by welding or the like. It was the reality.

(Problems to be solved by the invention) However, in the case where the casters 6e are fixed by welding or the like as in the conventional case, the casters cannot be easily exchanged depending on the application conditions of the door.

This type of temporary door requires only the straightness of the casters and opens and closes the door by simply moving the door body linearly. There is a type that rotates horizontally.

Therefore, if the caster is fixedly provided to the door body as in the conventional case, it cannot be applied to an application requiring horizontal rotation of the door body provided with a straight-casting caster, for example. On the contrary, the door body provided with the casters capable of changing the direction cannot be properly used as a door called a stage gate, which is required to have only straight-moving properties. The stage gate is a caster as shown in Fig. 10.
The wheel body 7e of 6e is fitted into the linear guide groove 30 to assist the straightness thereof. However, since the center of rotation C of the caster 6e, which can change direction, is eccentric from the contact surface position Ca of the wheel body 7e by the dimension L, the wheel body 7e is horizontally moved in order to change the direction of the caster. A large arc must be drawn on the to rotate horizontally.
Accordingly, the direction changing operation of the caster 6e is the above-mentioned
As shown in FIG. 10, it is impossible in the guide groove 30 having a constant width, and eventually the door body cannot be smoothly reciprocated.

As a result, conventionally, there has been a problem that the use of the door is inevitably limited and the versatility of the use is lacking.

Therefore, an object of the present invention is to make it possible to easily use one door main body for a plurality of uses and to eliminate the need to prepare a door having a different structure for each use. .

(Means for Solving the Problem) The present invention does not fix the caster to the vertical rod of the door body in a non-replaceable state as in the past, but freely changes the type of caster according to the application conditions. The casters are detachable and replaceable so that the above-mentioned conventional problems can be solved.

That is, the first aspect of the present invention is a temporary door for a construction site or the like, which comprises a door body 1 in which a plurality of vertical rods 2 ... Are connected via a horizontally expandable / contractible connecting body 3. In the lower part of the vertical rods 2, two types of casters, a straight caster 6 in which the traveling direction of the wheel main body is fixed and a caster 6a in which the wheel main body rotates in the horizontal direction can be freely attached and detached. It is a temporary door for construction sites, etc.

Secondly, according to the present invention, in the above structure, the lower portion of the vertical rod 2 is fitted in and disengaged from the cylindrical portions 10, 10a projecting from the upper portions of the brackets that support the wheel bodies of the two types of casters 6, 6a. The fixing bolts 13 are freely formed, and are used to maintain the fitted state when the lower portion of the vertical rod 2 is fitted into the tubular portions 10 and 10a. Is attached.

(Operation) In the above configuration, since the predetermined two types of casters 6 and 6a can be attached to and detached from the vertical rod 2 of the door body 1, the rectilinear caster 6 and the caster 6a that can change the direction are optional. One door body 1 can be appropriately used for any purpose as a so-called stage gate that can be selected to be mounted on the door body 1 and only moves straight in the horizontal direction, or as a cross gate that can be rotationally displaced in the horizontal direction. Becomes

In addition, in the above-mentioned second structure, the casters 6 and 6a are attached to and detached from the vertical rod 2 by a tubular portion provided on the casters 6 and 6a.
There is no need to perform any special tools or work by fitting and removing the 10 and 10a to the lower part of the vertical rod 2. In addition, the fixing bolt 13
The casters can be attached securely by tightening.

(Example) Hereinafter, the Example of this invention is described.

In FIG. 1, reference numeral 1 denotes a door body constituted by steel pipes or the like, for example, a total of three vertical rods 2 ... Which are linearly connected to each other via a pantograph-shaped connecting body 3,3. Indicates. The connecting body 3 has a plurality of tilted rods 4 ... Both ends and their intersecting positions are pivotally attached to each other and has a function of expanding and contracting in the horizontal direction, and both outer ends of the connecting body 3 are connected to the vertical rods 1. It is pivotally attached to each position of the protruding pieces 5 ...

6,6,6A are casters attached to the lower part of each vertical rod 2, of which the casters 6,6 are two wheel bodies 7,7 as shown in FIG.
Holders 9, 9 for supporting are fixedly attached to the lower surface side of the plate-shaped bracket 8 and are dedicated for straight traveling. The other caster 6A is different from the caster 6 in that it has only one wheel body 7, but it is common in that it has straightness.
Reference numeral 10 is a cylindrical portion having an upper opening formed by welding a round pipe to the upper portion of the bracket 8 and is a vertical rod 2 of the door body 1.
The inner diameter is set so that it can be freely inserted into and removed from the lower part of. 11,11
Is a hole formed by penetrating in the horizontal direction in the upper side surface of the tubular portion 10, and is aligned with the through hole 12 formed in the lower part of the vertical rod 2 and then the pin or bolt 13 is inserted to insert the caster 6 Is to be attached to the vertical rod 2 so as not to be pulled out.

Further, as another type of caster 6a capable of changing direction, the one shown in FIG. 3 is separately prepared. The caster 6a is such that the holders 9a, 9a of the wheel bodies 7, 7 are rotatably attached in the horizontal direction to the lower surface side of the bracket 8a via the bearings 31, 31. The support position of the wheel body 7 is eccentric from the center of the bearing 31 by a dimension L. Also,
Similarly to the caster 6 described above, the caster 6a also has a cylindrical portion 10a provided with holes 11, 11 projecting from the upper surface thereof.

In FIG. 1, 14 and 14 are brackets for supporting the door main body, which are attached to upper and lower two positions of the vertical rod 2 located on the side of the one end 1a of the door main body 1, and the vertical rod 2 as shown in FIG. A bolt 15 for preventing the vertical rod 2 from coming off is inserted into a short tubular holder 16 which is externally fitted to the holder 16. In addition, a clamp tool 18 that can be fixedly attached to a fixed support 17 is connected to a side portion of the holder 16. Reference numeral 19 denotes a through hole formed in the upper portion of each vertical rod 2 in the horizontal direction.

The present embodiment has the above configuration, and a usage example thereof will be described next.

First, when the door main body 1 is used as a stage gate installed in front of an elevator of a building, etc., a caster 6 dedicated for straight running is attached to a lower portion of the vertical rod 2 of the door main body 1. This mounting work is performed by fitting the tubular portion 10 of the caster 6 to the lower portion of the vertical rod 2 as shown in FIGS.
It suffices to insert the holes into the holes 11 and 12 and fix them. As a result, the casters 6 can be maintained in the retaining state. Further, the clamp tool of the brackets 14, 14 mounted on the vertical rod 2 may be clamped to an appropriate fixed pillar 17 at a construction site, for example, so as to fix the one end side of the door body 1.

In such a door structure, the connecting bodies 3, 3 can be expanded and contracted to horizontally move the other end 1b side of the door body 1 to freely open and close the entrance in front of the elevator. When the door is closed, the other end of the main body 1
The vertical rod 2b on the side of 1b may be fixed to a separately provided fixed column 17a by using a clamp or a hook.

Since the casters 6 cannot change the direction of the wheel bodies 7, 7, the casters 6 have a strong straight-line property and are optimal doors for so-called stage gates. With such casters 6, even if the wheel bodies 7, 7 are fitted in the linear guide grooves, there is no inconvenience in running the wheels.

Next, when the door body 1 is used as a so-called cross gate which is installed at a boundary position between a building construction site and a road, etc., after the casters 6 dedicated to straight traveling are removed from each vertical rod 2, The other casters 6a, which are capable of changing the direction described with reference to FIG. 4, may be attached to each vertical rod 2. The caster
Similarly to the above, the mounting of 6a may be performed by fitting the tubular portion 10a into the lower portion of the vertical rod 2 and inserting the bolt 13 into the holes 11 and 12.

By replacing the casters, the door main body 1 can be appropriately horizontally moved on a horizontal ground to open and close the door opening. However, the bolt 15 shown in FIG. If the vertical rod 2 is detached from the vertical rod 2 so as to be rotatable in the holder 16, the door main body 1 can be horizontally rotated to set the door opening wide as shown in FIG. Further, with respect to the vertical rod 2 on the one end 1a side to which the door body 1 is fixed, since the vertical rod 2 serves as the center of rotation of the door body 1, it is not always necessary to mount casters that can change direction. The caster 6A having the one wheel body 7 previously attached may be used as it is.

In the above embodiment, the vertical rods 2 ... Of the door body 1 are extensiblely connected by the connecting member constituted by the pantograph-shaped tilting rods 4 ... However, the connecting member according to the present invention is not limited to this.

For example, as shown in FIG. 7, the vertical rods 2 of the door body 1 may be connected by a foldable panel 32. The panel 32 may be used together with the tilting rod 4 or may be used alone.

Further, in the door body 1 according to the present invention, the specific shape and the number of the vertical rods 2, the specific attachment means to the fixed columns, etc. are not limited to those in the above embodiments. The point is that a plurality of vertical rods 2 ... Are connected via a horizontally freely connectable body, and the lower portion of the vertical rod 2 has two predetermined types of casters which can be attached and detached. It should be configured accordingly. In addition, it is not necessary to attach casters to all the positions of the vertical rod 2 which constitutes the door body 1.

Further, the concrete structure of the caster is not limited to that in the above-mentioned embodiment, and it is not always necessary to adopt the means for forming the cylindrical portion on the upper part of the caster. Even if the caster can be attached and detached and replaced by adopting other means, it is within the technical scope of the present invention according to the first aspect.

Besides, in the present invention, the specific configuration of each part can be arbitrarily modified in design, and its specific application is not specified.

Further, in the case where the caster is detachable from the door main body and the hole 19 is formed in the upper part of each vertical rod 2 of the door main body 1, as shown in FIG. The vertical rods 2 can be connected to the hanging rods 32 having wheels 34 on the upper portions thereof by using 19, and the door main body 1 can also be used as a temporary door of a type suspended on the gate-shaped frame 33.

(Effect of the invention) As described above, the present invention allows two types of casters, a straight type caster and a direction changeable caster, to be attached to and detached from the lower portion of the vertical rod of the door body. The caster can be mounted on the door body by selecting arbitrarily, and it can be used as a so-called stage gate that only moves straight in the horizontal direction or as a cross gate that can be rotationally displaced in the horizontal direction. It can be used.

As a result, according to the present invention, it is not necessary to prepare two types of door bodies according to the application conditions, such as a conventional door to which casters are fixed, and the cost required for preparing such a door body can be reduced by half, and the site can be reduced. It has excellent flexibility in use, and has the effect that its usability is extremely good.

In addition, according to the present invention, the caster can be attached to and detached from the vertical rod by inserting and removing the tubular portion provided on the caster to the lower part of the vertical rod. There is an advantage that it can be performed very easily and quickly without any work, and the caster can be surely attached by tightening the fixing bolt.

[Brief description of drawings]

FIG. 1 is an overall front view showing an embodiment of a temporary door according to the present invention. FIG. 2 is a sectional view of the principal part of the line XX of FIG. FIG. 3 is a cross-sectional front view of an essential part showing an example of a straight advance type caster. FIG. 4 shows an example of a caster which can change direction. FIG. 4A is a sectional front view of an essential part, and FIG. 4B is a sectional side view of an essential part. FIG. 5 is a sectional view taken along the line YY of FIG. FIG. 6 is a perspective view of another usage state. FIG. 7 and FIG. 8 are front views of essential parts showing another embodiment. 9 and 10 are explanatory views showing a conventional example. 1 ... door body, 2 ... vertical rod, 3 ... connecting body 6,6a ... caster, 10,10a ... cylindrical part 13 ... fixing bolt

Claims (2)

[Scope of utility model registration request] 1. A temporary door for a construction site, etc., comprising a door body 1 in which a plurality of vertical rods 2 ... In the lower part of the rod 2, two types of casters, a straight type caster 6 in which the traveling direction of the wheel main body is fixed and a caster 6a in which the wheel main body rotates in the horizontal direction are freely detachable and replaceable are set. A temporary door for construction sites, etc. 2. The lower part of the vertical rod 2 has two kinds of casters 6, 6a.
Is formed so that it can be inserted into and removed from tubular portions 10 and 10a protruding from the upper portion of each bracket that supports the wheel body of the vertical rod 2, and the lower portion of the vertical rod 2 is tubular in the tubular portions 10 and 10a. The temporary door for a construction site according to claim 1, further comprising a fixing bolt (13) for maintaining the fitted state when fitted to the parts (10, 10a).