JP2001136842A - Rail type film-fixing device for film-spread green house, jig for attaching the same and holding rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film-fixing device which can stably and easily fix a film without damaging the film. SOLUTION: This film-fixing device is provided with a holding rail which has a dent portion comprising an opening and a holding chamber and is fixed to the film of a green house, and an expansion device whose at least one portion is received in the dent portion in a state nipping the film between the expansion device and the holding rail and can be expanded by an outer operation in the holding chamber. The expansion device is provided with an expansion portion which can be inserted from the opening of the dent portion into the holding chamber and can be expanded so that a pair of the side walls are brought into contact with both the side surfaces of the holding chamber in the holding chamber, an operation portion which can be received in the expansion member, has a sliding member extended in the longitudinal direction of the expansion portion and an interlocking member interlocked with the sliding member, and can operate the sliding member and the interlocking member through an expansion-doubling mechanism to expand the expansion portion in the received state, and an operation portion for driving the expansion-doubling mechanism through an operation-doubling mechanism by an outer operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film fixing device for a film stretching house, a jig for mounting the film fixing device, and a holding rail. More specifically, a film is interposed and fixed between a holding chamber provided on a holding rail that can be fixed to a frame of a film stretching house and a widening device at least partially housed in the holding chamber. The present invention relates to a film fixing device, a mounting jig thereof, and a holding rail.

[0002]

2. Description of the Related Art A film-extended house installed as a greenhouse for agriculture or horticulture is composed of a polyester film, a fluorine-based film, and PO (polyolefin) on a frame for a house assembled by connecting a number of pipes and the like. ) It is configured by covering a greenhouse space with a system film or the like. The stretched film needs to be stably fixed on the frame so as to withstand strong wind, and various film fixing devices are used for this purpose.

[0003] As a film fixing device, for example, a film for a house is interposed in a groove which is widened toward the inside of a metal holding rail mounted on a frame of a house so that an opening thereof faces outward. There is known a device for fixing a film by fitting a metal spring bent into a corrugated bar in a folded state. In this device, the film is fixed by pressing the film against the side surface of the groove of the holding rail using the elasticity of a metal spring.

[0004]

However, in this device, on the side of the groove of the holding rail, the film is in local contact at the top of the corrugation according to the shape of the spring. For this reason, there has been a problem that the film is easily broken due to rubbing caused by the action of the wind during the fixing operation or after the fixing. In particular, PO-based films are often used in recent years because they have excellent weather resistance, do not generate harmful gas even when burned, and have the advantage of being easily disposed of. Has weak properties. For this reason, it is difficult to use an auxiliary member for holding the film such as mica wire, so if the stretched PO-based film is slightly vibrated by wind or the like, frictional contact with the fixing member or the like near the film fixing portion occurs. It was easy to be damaged.

[0005] Even if the film is not damaged, such a large number of local fixings tend to cause wrinkles on the film surface, and such wrinkles may collect condensation and cause water drops to fall into the house. Drops of water droplets often have an adverse effect on crops that have received the water droplets, and particularly in the cultivation of flowers in a house, if water drops fall in the house, the flowers are likely to rot. Further, when wrinkles are formed, there is a problem that the permeability of the film is reduced.

[0006] In order to reduce the damage of the film due to the rubbing described above, a metal spring coated with a sponge resin or the like is also known. However, since the film is locally fixed, the film may be damaged. And the film was easily wrinkled.

[0007] When fitting such a metallic wave spring into the groove of the holding rail, an operation of deforming the spring with a strong force and pushing it in must be performed over the entire length of the holding rail. The labor spent for fixing was great.

A fixing device for continuously fixing such a film while avoiding such local fixing has been proposed. FIG.
Numeral 0 indicates a conventional film fixing device for continuously fixing. In this fixing device, the film 8 is inserted into the groove of the metal holding rail 80 attached to the frame of the house.
The film 4 is fixed by inserting the resin inner rail 82 with the intermediary 4 and pressing the inner rail 82 with the wave spring 86 so as to increase the width. In this way, the film 84 is held on the holding rail 80.
And the inner rail 82 can be fixed continuously.

However, even in such an apparatus, when the inner rail made of resin is inserted into the groove of the metal rail, the inner rail is pressed into the groove while being pressed and shrunk in the width direction. Strong frictional contact between the inner rail and the film was likely to occur. Further, in such a device, the inner rail alone has a weak force to press the film in the groove. Therefore, after the inner rail is fitted in the groove, a temporary jig 88 is used to prevent the inner rail from coming off the holding rail. It was necessary to perform fastening and then fitting the wave spring 86 into the inner rail, which was extremely troublesome. Also in this apparatus, since the operation of deforming the wave spring and pushing it into the inner rail must be performed over the entire length of the holding rail, the labor for fixing the film is large.

As another film fixing device, as shown in FIG. 31, a fixing device for linearly supporting a film at a pair of opening edges in a groove of a holding rail 90 and at two places on a bottom wall is disclosed in Japanese Patent Application Laid-Open No. HEI 9-163702. No. 11-69917. In this fixing device, workability is improved because no wave spring is used. However, when the inner rail 92 is pushed into the groove of the holding rail 90, the film is liable to be rubbed. In addition, this device is used when the film is pulled obliquely upward with respect to a plane parallel to the bottom surface of the holding rail.
The structure is such that the inner rail is easily detached from the groove. For this reason, when a strong wind blows, the film may be pulled in the above-described direction and the inner rail may be disengaged.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to stably and easily house a film-strength house without damaging the film even if the film is weak against abrasion such as a PO film or a fluorine-based film. It is an object of the present invention to provide a film fixing device capable of fixing to a frame.

Another object of the present invention is a mounting jig for a film fixing device as described above, which can fix a film more easily and quickly on a frame of a house. Is to provide.

Still another object of the present invention is to provide a holding rail which can be applied to the above-described film fixing device and has an effect of preventing dew condensation and the like.

[0014]

A rail type film fixing device for a film stretching house according to the present invention is a rail type film fixing device for a film stretching house,
A holding rail having an opening extending in the rail longitudinal direction and a holding chamber widened inward from the opening, and a holding rail fixed to a frame of the film-expanded house; A widening device that is at least partially accommodated in the concave portion with the film interposed therebetween and that can be widened by an external operation in the holding chamber, wherein the widening device includes a sliding member and an interlocking member that interlocks with the sliding member. A member is provided to actuate the sliding member and the interlocking member via an expansion booster mechanism to widen the width, and to drive the expansion booster mechanism via an operation booster mechanism by an external operation. Thus, the above object is achieved.

Alternatively, the rail-type film fixing device for a film-extending house according to the present invention has a concave portion having an opening extending in the rail longitudinal direction and a holding chamber widened inward from the opening. A holding rail having a C-shaped cross section fixed to the frame of the stretched house, and at least a part of the holding film is housed between the holding rails, and at least a part of the holding film is housed in the holding chamber by an external operation in the holding chamber. A widening device that can be widened, the widening device has an elongated shape that is accommodated in the concave portion of the holding rail, and can be inserted into the holding chamber from an opening of the concave portion, and has a pair of hollow portions that have a hollow portion therebetween. An extension portion having a side wall, which can be widened so that the pair of side walls abut both side surfaces of the holding chamber in the holding chamber, and can be stored in a hollow portion of the extension portion; A sliding member extending in the longitudinal direction of the extension portion and an interlocking member interlocked with the sliding member, and in the housed state in the hollow portion, actuating the sliding member and the interlocking member via an expansion booster mechanism, An actuating section that is capable of pressing the pair of side walls of the extension section to widen the extension section, and that is provided on an end surface of the extension section and that drives the extension booster mechanism via an operation booster mechanism by an external operation. And an operation unit for performing the above-mentioned operations, thereby achieving the above object.

[0016] The power boosting mechanism of the operating portion includes a plurality of mutually parallel links connected to the sliding member at an inclined angle, and the links are provided with a longitudinal length between the sliding members. The relative movement in the direction causes the angle to the sliding member to be closer to a right angle, so that the expansion portion is arranged to be widened, and the operating booster mechanism of the operating portion moves the sliding member in the longitudinal direction. It may be arranged to slide.

Alternatively, the booster mechanism for expanding the operating portion further includes a cam plate extending in parallel with the sliding member so as to cooperate with the sliding member. Either or both are provided with a number of slanted mutually parallel cam surfaces, which are relatively movable in the longitudinal direction with respect to each other, and are arranged so as to be guided by the cam surfaces by the relative movement to expand the expansion portion. The operating booster mechanism of the operating section may be arranged to relatively move the sliding member and the cam plate in the longitudinal direction.

[0018] The extension may further include a fixed reinforcing portion cooperating with the extension, wherein the extension is continuous with the pair of side walls of the extension and has two flat portions facing the opening of the holding rail. The fixed reinforcing portion includes a holding plate having a width extending over the two flat portions and extending in the longitudinal direction of the extension portion. The flat portion and the holding plate are arranged such that the extension portion contacts the holding chamber. When in the widened state in which they are in contact with each other, they may be provided with engaging portions that are fitted into and recessed from each other.

An auxiliary widening device is further provided, wherein the extension portion includes an auxiliary wall projecting from each of the pair of side walls toward the opening of the concave portion while being accommodated in the concave portion of the holding rail, In between, an opening and an auxiliary holding chamber for accommodating the auxiliary widening device via the opening are formed, and the auxiliary widening device has an elongated shape to be accommodated in the auxiliary holding chamber, A pair of auxiliary side walls that can be inserted into the auxiliary holding chamber from the opening and have a hollow portion therebetween are provided, and the pair of auxiliary side walls are widened in the auxiliary holding chamber so as to abut both side surfaces of the auxiliary holding chamber. An auxiliary extension to be obtained, and a sliding member that can be housed in the hollow portion of the auxiliary extension portion and that extends in the longitudinal direction of the auxiliary extension portion and an interlocking member that interlocks with the sliding member, When stored, the boost for expansion An auxiliary operating portion that operates the sliding member and the interlocking member through a structure and presses a pair of auxiliary side walls of the auxiliary expanding portion to expand the auxiliary expanding portion, and is provided on an end surface of the auxiliary expanding portion; An auxiliary operation unit that drives the expansion booster mechanism via an operation booster mechanism by an external operation may be provided.

Alternatively, the film fixing apparatus for a film stretching house according to the present invention comprises an opening extending in the longitudinal direction, a widened holding chamber which is located first as going inward from the opening, and further an inner side. A holding rail provided through a stenosis portion, and a holding rail fixed to a frame of the film-expanding house; and a housing film sandwiched between the holding rail, and housed in the holding chamber. A widening device that can be widened by an external operation in these holding chambers, the widening device has an elongated shape to be accommodated in the holding chamber of the holding rail, and can be inserted into the holding chamber from the opening, An expansion portion having a pair of side walls having a hollow portion between the expansion portions that can be widened so that the pair of side walls abut both side surfaces of the holding chamber in the holding chamber; A sliding member extending in the longitudinal direction of the expansion portion and an interlocking member interlocking with the sliding member, and in the state of being housed in the hollow portion, the sliding member is extended via an expansion booster mechanism. An actuating part that can actuate a member and an interlocking member to press the pair of side walls of the expanding part to widen the expanding part, provided on an end face of the expanding part, via an operation booster mechanism by an external operation, An operating unit for driving the expanding booster mechanism, whereby the object is achieved.

Alternatively, the rail-type film fixing device for a film-extending house according to the present invention is a rail-type film fixing device for a film-extending house, comprising an opening extending in the rail longitudinal direction and an inner side of the opening. In the holding room fixed to the frame of the film-stretched house, a holding rail fixed to the frame of the film-stretched house, and housed between the holding rails, housed in the holding room, A widening device that can be widened by an external operation in the holding chamber, the widening device includes a sliding member and an interlocking member that interlocks with the sliding member, and the sliding member and An actuating portion that can be widened by operating the interlocking member to move the sliding member outward, and an expansion booster through an operation booster mechanism by an external operation. And an operating section for driving the structure, to achieve the above object by this.

The operating portion has an elongated center sliding member provided between a pair of elongated side sliding members disposed so as to be close to and separated from each other, and a plurality of operating portions are provided between the center sliding member and the side sliding members. , And both ends of each interlocking member are hingedly connected to the center sliding member and the side sliding member, respectively, and the bearing portion is formed inward from the end of each side sliding member. Formed, a screw hole is provided in the central sliding member from the end face in the axial direction of the central sliding member, the screw is supported by the bearing portion, and the tip of the screw is screwed into the screw hole of the central sliding member. The relative movement of the central sliding member with respect to the side sliding member in the longitudinal direction with respect to the side sliding member due to the advance and retreat of the screw causes the interlocking member to approach the right angle from the state inclined with respect to the central sliding member and the side sliding member. The distance between the sliding members may be configured to be increased.

The holding rail may include a holding chamber that is initially widened and a holding chamber that is further provided inside through a constriction.

Alternatively, the mounting jig of the present invention for mounting the film fixing device is used when the widening device is mounted on the holding rail fixed to a house frame, and the widening device is used during use. An elongate abutting portion that contacts the device, a locking portion provided at the corresponding abutting portion and capable of holding the widening device by locking the portion of the extension portion facing the opening of the holding rail; A grip portion coupled to the contact portion on a side away from the widening device with respect to the contact portion and gripped by a user, thereby achieving the above object.

[0025] The locking portion may include a projection that locks into a plurality of holes provided in the holding plate of the widening device.

An elongated support portion extending substantially parallel to the contact portion, a central support extending from substantially the center of the contact portion in the longitudinal direction to the support portion, and connecting the contact portion and the support portion;
An end post extending from a position near both ends of the contact portion to the support portion and connecting the contact portion and the support portion; and a male screw portion provided on one or both of the central post and the end post, A female screw portion provided on the contact portion or the support portion so as to be screwed into the male screw portion, wherein the contact portion is
It may be configured such that it can be curved as the central support or the end support moves forward and backward by the male screw portion.

Alternatively, the holding rail of the present invention, which constitutes a part of a film fixing device for a film stretching house, has a holding rail fixed to a frame of the film stretching house, and has an opening extending in a longitudinal direction. A side wall and a bottom wall connecting the side walls so as to form a concave portion having a holding chamber widened inward from the opening, and the bottom wall has a vicinity of a central portion between the side walls. It is characterized by projecting to the opposite side of the opening, thereby achieving the above object.

When the holding rail is curved so as to project a part of the both side walls outwardly to form a curved absorbing portion, and when the curved holding rail is arranged along the curved frame of the film stretching house, The curved absorbing portion may be configured to be deformed in a flattening direction.

[0029] A slit may be formed in the holding rail from the upper edge of the both side walls toward the bottom wall, and the slit may be provided on the side wall at a predetermined interval.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a film fixing device according to an embodiment of the present invention will be described with reference to the drawings. The same or similar members in different embodiments are denoted by the same member numbers.

FIG. 1 is an overall view of a film spreading house 1. The film spreading house 1 is configured such that a film 8 is fixed by a film fixing device 6 on a frame 4 formed by combining rods such as metal pipes using various connecting means.

The film fixing device 6 is arranged at various places on the frame as required. For example, it is arranged so as to extend perpendicular to the pipe on the side surface of the house, and is arranged along the pipe on the roof of the house. When the pipe is provided in an arch shape on the roof or the like, the film fixing device 6 is also arranged in an arch shape along the same.

Hereinafter, an embodiment of the film fixing device 6 of the present invention will be described. (Embodiment 1) FIG. 2 shows a sectional structure of a film fixing device 6 of Embodiment 1 in a state where a film is fixed. As shown in FIG. 2, the film fixing device 6 includes a holding rail 10 extending in a longitudinal direction and a widening device 20. Widening device 2
0 is stored in the recess of the holding rail 10 and the film 8
Is interposed between them.

The recess of the holding rail 10 has an opening 12 extending in the longitudinal direction for inserting the widening device 20 and an opening 1.
And a holding chamber for holding the inserted widening device in a widened state. The holding rail 10 is provided with a protrusion 16 on a surface opposite to the side on which the opening 12 is provided, and is fixed to the frame of the house at the protrusion 16. The fixation can be performed using a known fastener.

The holding rail 10 of the present embodiment has a projection 16
As a result, a predetermined gap is formed between the film 8 and the frame of the house. Such a gap has an effect of preventing dew condensation. Further, preferably, on both side surfaces of the holding chamber 14, there are provided retaining members 18 having steps so as to widen inward. The retaining device 18 is provided with a widening device 20 correspondingly provided.
Of the widening device 20 in the direction of the opening 12 is prevented. Therefore, it is possible to more reliably hold the widening device 20 in the holding space 14.

However, as the holding rail 10, various holding rails having an opening extending in the longitudinal direction and a holding chamber widened inward from the opening and having a C-shaped cross section can be used. Can be done.

FIG. 3 shows a perspective view of the widening device 20. As shown in FIGS. 2 and 3, the widening device 20 includes a holding chamber 14.
The expansion unit 22 is configured to be expandable so as to be in contact with both side surfaces of the expansion unit, a widening mechanism 24 housed in the expansion unit to widen the expansion unit, and the widening mechanism 24 from the outside.
And a screw 26 for moving it in the longitudinal direction of zero.

The expansion portion 22 of the widening device 20 is preferably formed of a resin, and has two hollow right and left expansion portions each having a C-shaped end portion and a flat portion continuous with the end portion so as to enable widening. The members 22a and 22b are configured with a clearance fit at the center. In the engagement portion between these expansion members 22a and 22b, one expansion member 22a
The other expansion member 22b has a concave portion 220b fitted in the width direction with the convex portion 220a. Convex part 220
a, the tip of which is enlarged in the shape of an arrowhead,
Is provided with a pair of return tooth-shaped locking pieces at the tip,
After the insertion of 20a, it is desirable to engage with the arrowhead-like tip of the projection to prevent it from falling off. The width d of the concave portion 220b defines the width of the widening device 20 in the widened state and the narrowed state. This width d is designed such that the width of the widening device in the widened state is substantially the same as the width of the holding chamber.
The width d is designed such that the width of the widening device is smaller than the width of the opening of the holding rail in the reduced width state.

The left and right expansion members 22a and 22a
b, a plurality of holes 2 are provided on the flat surface on the opening 12 side.
2c is provided. The shape of the hole is desirably an oval that is long in the longitudinal direction of the expansion member. Thereby, even if the expansion device 20 is curved in an arch shape along the longitudinal direction and the outer surface of the curvature is extended, it can receive a convex portion of the holding plate described later.

FIG. 4 shows the widening mechanism 24. Widening mechanism 2
4 has two elongated members 24a and 24b provided in parallel with each other, and a plurality of ribs 24c which are interlocking members connecting the elongated members 24a and 24b. The rib 24c is rotatably connected to the elongated members 24a and 24b around each connection j. Thereby, the one elongated member 24a can be moved in the longitudinal direction as a sliding member, and the angle of the rib with the elongated member can be reduced from an acute angle to a right angle. As a result, 2
The space between the elongated members 24a and 24b is increased. That is, in the widening mechanism 24 shown in FIG. 4, the rib 24c acts as a link, thereby serving as an expansion boosting mechanism that widens the interval between the elongated members by relative movement between the elongated members.

The connection between the elongate member and the rib is made by, for example, a resin made of PO (polyolefin) or the like so that the connection portion j has an appropriate connection form so that rotation and durability can be obtained. It is obtained by integrally forming the ribs. In order to form such a connection portion, a known resin material and a known molding method can be used. In the connection part j, the rib 24c abuts on the elongated member when the angle with the elongated member becomes a right angle,
The elongated member has an end surface that prevents further relative movement of the elongated member. Further, in a state where the rib 24c and the elongated members 24a and 24b abut at a right angle, the rib also acts as a support for supporting a force applied to the pair of elongated members in a direction toward each other.

FIG. 5 shows a sectional view of the widening device 20 from above and side views of both ends. A widening mechanism 24 is arranged along the longitudinal direction in the hollow part of the expansion part 22.
One elongated member 24 b of the widening mechanism 24 is fixed to one of the expansion members 22 b of the expansion unit 22 by a fixing unit 28. The fixing portion 28 is a stopper preferably formed integrally with the expansion member 22b and locked to the elongated member 24b.
However, this fixation may be made by various means, for example, by using a screw fastener, the expansion member 22b and the elongate member 2b.
4b may be fixed.

A cap 30 shown in FIG. 5 is attached to the ends of the expansion members 22a and 22b. Cap 30
Flat portion 3 that covers the ends of expansion members 22a and 22b in an oval shape
00, a lip 301 extending from the flat portion to surround the outer periphery of the extension members 22a and 22b, and a bellows portion 302 formed in the middle of the flat portion. Cap 30
The return piece of the lip 301 is covered with the extension members 22a and 22b, and is fixed by being locked in a groove provided on the outer periphery of the extension members 22a and 22b. Cap 3
No. 3 corresponds to the elongated member 24a.
03 and a small-diameter through-hole 304 extending from the bottom thereof. The screw 26 is inserted into the through hole 304, and the head is held in the recess 303. Screw 2
6 is screwed into a female threaded hole extending in the longitudinal direction from the end face of the elongated member 24a. Therefore, screw 26
Is turned by using an L handle or the like so that the elongated member 2
4a is drawn to the cap 30 side. The movement of the elongated member 24a in the opposite direction is caused by the elastic force at the joint between the rib 24c and the elongated member when the screw 26 is turned in the opposite direction. However, the tip side of the screw 26 is the through hole 3
By making the screw contact the inner surface of the cap 30 at the position 04, the slender member 24a can be positively pushed in the direction away from the cap 30 by the reverse rotation of the screw. In this manner, the screw through hole of the cap 30, the screw 26,
The female threaded hole of the elongated member forms an operating booster mechanism that functions during an external operation by hand, so that the expanding booster mechanism of the widening mechanism 24 can be driven from outside the widening device 20. It is possible.

As described above, the widening device according to the present embodiment operates the screw portion provided on the end face of the expanded portion,
The elongated member of the widening mechanism is moved in the longitudinal direction via the operating booster mechanism. In addition, this movement increases the distance between the elongated members via the expanding booster mechanism. Thereby, the expansion portion is widened by pressing the inner surfaces of both walls of the hollow portion of the expansion portion. The widened extension preferably reaches a size approximately equal to the size of the holding chamber of the holding rail.

In order to obtain the widening device 20 as described above, various types of expansion portions 22 and widening mechanisms 24 can be employed, and these connection modes can also be various. . Hereinafter, a widening device having a widening mechanism different from the above-described widening mechanism will be exemplified.

FIGS. 6 and 7 show the connection at the connecting portion j of the widening mechanism 24 shown in FIGS. 4 and 5 by fitting the columnar body provided at the rib end into the cylindrical recess of the elongated member. 5 shows a widening device using a widening mechanism in which a portion is formed.

In the widening device shown in FIG. 6, one elongated member 24b is fixed to the cap 30 and the expanding member 22b by a fixing screw 32. Even in such a structure, the rib 24c is rotated with the cylindrical member as an axis by operating the screw 26 from the outside to slide the elongated member 24a in the longitudinal direction with respect to the elongated member 24b. And approach the right angle. In this way, the distance between the elongated members is increased.

In the widening device shown in FIG. 7, one of the elongated members 24b and the expansion member 22b are fixed by the expansion member 22.
The protrusion 36 is fixed by fitting the protrusion 36 fixed to the depression formed in the elongated member 24b. In this configuration, the elongated member 24
The movement of b in the longitudinal direction is prevented. The rib 24c
The other elongated member 24a supported by the rib 24c and connected to the rib 24c abuts on the extended portion 22, thereby preventing the elongated member 24b from falling off in the width direction. With such a connection form, the operation of fixing the elongated member to the expansion portion can be relatively easily performed, and the workability when assembling the widening device can be improved. Further, as shown in the figure, the cap 34 can be in a separated form so as to be attached to each of the expansion members 22a and 22b.

FIG. 8 shows a further embodiment of the widening mechanism 24, and FIG. 9 shows a widening device 2 having the widening mechanism 24 shown in FIG.
Indicates 0. The widening mechanism 24 of this embodiment includes an elongated member (sliding member) 24d extending in the longitudinal direction, a number of ribs (interlocking members) 24e rotatably connected on both sides thereof,
And a pair of columnar members 38 fixed to the extension portion 22 and slidably holding the rib 24e therebetween.

In this embodiment, when the elongated member 24d is slid in the longitudinal direction by using the screw 26, the side wall of the extension portion 22 is pushed by the tip of the rib 24e to increase the interval between each other. Become. The rib 24e and the columnar body 38 provided in pairs so as to sandwich the rib 24e
Are in contact with each other so as to be rotatable about a contact portion with the column 38. In this embodiment, the elongated member 24d provided at the center in the width direction has a large number of ribs 24 on both sides thereof.
By providing two pairs of link mechanisms consisting of e, a widening booster mechanism is configured.

FIG. 10 shows a widening device provided with still another mode of widening mechanism. The widening mechanism of this embodiment includes a cam plate 46 as a sliding member having a cam surface 47 formed by a slit, and a projection 48 fixed to each of the two widening members and forming a cam follower (an interlocking member). Have. The cam surface 47 is inclined with respect to the longitudinal direction of the cam plate 46. By sliding this cam plate in the longitudinal direction with the screw 26, the projection 48 of the widening booster mechanism
It is guided by the cam surface and operates to widen the interval between the expansion members.

The widening mechanism shown in FIG. 10 is constituted by a cam plate connected to a screw and a projection fixed to an extension, but is different from this in that a sliding member having a projection is connected to the screw. Alternatively, a form in which a cam plate groove is formed in the extension portion may be used. In addition, although the widening apparatus provided with the widening mechanism which has various forms was illustrated above, the widening apparatus provided with various widening mechanisms other than these forms can be used.

As shown in FIG. 11, the widening device 20 is further provided with a reinforcing plate for more securely maintaining the shape of the expanded portion 22 widened using any of the widening mechanisms 24 as described above. May be. The reinforcing plate 40 includes a flat plate 42 extending in the longitudinal direction and a plurality of convex engaging portions 44 provided on the flat plate 42. The reinforcing plate 40 is disposed so as to straddle the respective flat portions of the expansion members 22a and 22b desired at the opening of the holding rail, and a plurality of convex engaging portions 44 form holes 22c provided in these flat portions. It is configured to be able to fit. Preferably, the reinforcing plate 40 is formed from a flexible resin material. Further, it is desirable that the distal end of the convex engaging portion 44 be expanded in diameter in order to prevent it from coming off.

Here, the interval P between the pair of convex engaging portions 44 arranged in the width direction of the reinforcing plate 40 is set such that the extended portion 22 is in a widened state such that the extended portion 22 substantially contacts the holding chamber of the holding rail. Is designed to be substantially the same as the interval between the pair of holes 22c of the expansion part. Therefore, the convex engagement portion 4 of the reinforcing plate
By fitting the 4 into the hole of the expanded member in the widened state, the expanded portion can be prevented from being reduced in width, so that the widening device is prevented from falling off from the holding chamber of the holding rail through the opening.

Next, a mounting jig of the film fixing device 6 of the present embodiment will be described.

FIGS. 12 and 13 show a mounting jig 50 of the film fixing device. The mounting jig 50 has an elongated support portion 52 having a handle 59 at the center and extending in the longitudinal direction, and an abutment surface 55 provided in parallel with the support portion 52 and in contact with and pressing on the widening device. Contact part 54
And a central support 56 that is connected to the support portion 52 and the contact portion 54 in a substantially central portion in the longitudinal direction in a substantially vertical direction and fixes them. The mounting jig 50 further includes a support portion 5.
2 has two adjusting screws 58 provided in parallel with the central support 56 at positions near both ends. Adjustment screw 58
Are provided so as to penetrate through screw holes provided at positions from both ends of the support portion 52, and to have a tip thereof abutting on the contact portion 54.

The contact surface 55 of the contact portion 54 is, for example, the upper surface of the expanding portion 22 of the widening device, that is, the surface in contact with the surface provided with the hole for mounting the reinforcing plate 40. In order to stably hold down the upper surface of the expansion portion, the contact surface 55 is provided with a locking portion such as a convex surface having a chevron cross section extending in the longitudinal direction. The upper surface of the expanded portion can be prevented from slipping against the contact surface 55 by making contact with a stepped portion or the like that extends to the side.

The adjusting screw 58 is provided to bend the contact surface 55 in the longitudinal direction. The contact portion 54 is formed of a flexible material such as a resin, and the adjusting screw 58 provided near both ends of the support portion 52 is rotated to move the adjusting screw 58 forward and backward so that the contact surface 55 has a desired radius of curvature. Can be curved. If the contact surface 55 can be curved in this manner, for example, the flexible widening device is curved in a holding chamber of a holding rail provided to be curved along a curved frame in a ceiling portion of the film stretching house. This is advantageous in the case of inserting in a state.

For example, using such a mounting jig, the film fixing device of the present embodiment is appropriately mounted. First,
Attach the retaining rail to the house frame where you want to secure the film, with the opening facing out. The holding rail is securely fixed along the frame or in a direction perpendicular to the frame at any point such as an arched ceiling portion of the frame, a straight side surface portion, or the like, using various known mounting tools. .

Next, a coating film to be fixed (for example, P
An O film) is disposed so as to cover the opening of the holding rail, and the widening device of the present embodiment is inserted into the holding chamber through the opening of the holding rail in a reduced width state from above the film.
The widening device is inserted into the holding chamber while pushing the film on its substantially flat back surface in a reduced width state with a width smaller than the opening width of the holding rail, reducing the possibility of film damage. You can do it.

At this time, if the mounting jig shown in FIGS. 12 and 13 is used, the insertion work becomes easy. That is, while the user holds the handle 59 and presses the widening device into the concave portion of the holding rail while pressing the contact surface 55 against the upper surface of the expanded portion of the widening device, the widening device is almost in the longitudinal direction. While being held down by a uniform force, it is inserted into the holding chamber of the holding rail. According to such a method, since a local force is not applied to the film interposed between the holding chamber and the widening device, wrinkling of the film can be reduced.

The widening device accommodated in the holding chamber in a reduced width state with a film interposed therebetween is widened from the outside by operating a screw. This screw is provided at the end of the extension (for example, the cap 30 shown in FIG. 5),
The rotation can be performed using a known tool (for example, an L handle). The holding rail according to the present embodiment is the same as that shown in FIG.
As shown in (1), since it is attached to the frame via the protruding portion 16, a space is formed between the frame and the screw. Therefore, there is an advantage that the rotation of the L handle can be easily performed using this space.

By operating the screw 26 to relatively move the sliding member of the widening mechanism 24 in the longitudinal direction, the distance between the elongated members is widened via the expanding booster mechanism. This allows
The elongated member presses the inner surfaces of both side walls of the expansion portion 22 to press the expansion portion 2.
2 is widened. In this step, the film is sandwiched between the expanded portion and both side surfaces of the holding chamber in the holding chamber by the widening of the widening device. Here, the widening of the widening device is performed uniformly in the longitudinal direction, and since the widening device and the film are in contact with each other with a flat surface and a gentle convex surface, it is difficult to damage the film, and the film is stretched. The film is less likely to wrinkle.

The hole 22c on the plane desired at the opening of the holding rail of the widening device 20 widened in this way is inserted in FIG.
Then, the convex engaging portion 44 of the reinforcing plate 40 shown in FIG. Thereby, the widening device 20 more reliably maintains the widened state.

The film can be fixed by the method described above even when the film fixing device of the present embodiment is arranged along an arched frame such as a house ceiling. However, in this case, the contact surface of the mounting jig with the widening device is desirably formed in an arch shape that matches the shape of the frame using an adjusting screw. Also, in the widening device curved correspondingly, in order for the widening mechanism to function properly, the hollow portion of the expansion portion may be dimensioned to accommodate the widening device and have extra space. . In the widening device widened along the arch as described above, the mounting of the reinforcing plate is appropriately performed by the hole 22c having a long oval shape in the longitudinal direction of the upper surface of the expanded portion. In other words, the upper surface of the expansion section also curves along the longitudinal direction,
The gap between the holes will be larger, but in consideration of that amount in advance,
By providing the hole in an elliptical shape, uneven fitting with the convex locking portion of the reinforcing plate can be appropriately performed.

As described above, by using the film fixing device of the present embodiment to fix the film between the inner surface of the concave portion of the holding rail and the widening device, it is possible to use a conventional metal spring, The film can be fixed without using the elasticity of the flexible inner rail. Therefore, film damage and wrinkles are reduced, and relatively little labor is required.
Further, the film fixing device of the present embodiment can be used in both the straight portion and the curved portion on the frame of the house, and even if the film is pulled in any direction, it does not come off. Therefore, it can be used stably for various uses.

Hereinafter, a method of fixing a film using a mounting jig having a different form from the mounting jig shown in FIGS. 12 and 13 will be described.

FIG. 14 is a partial sectional view of a mounting jig 50 'of another embodiment. The mounting jig 50 ′ is provided with a plurality of locking projections 55 a aligned in the longitudinal direction on the lower half of the contact surface 55 of the contact portion 54, and the upper half of the contact surface 55 has a taper. It is attached.

The insertion of the holding rail of the widening device into the holding chamber using such a mounting jig 50 'is performed as follows. First, the reinforcing plate 40 is fitted and locked to the locking projection 55a provided on the contact surface 55 of the mounting jig 50 '.
To this end, mounting holes 45 are provided in the reinforcing plate 40. Further, in this state, the hole 22c on the plane of the expanded portion 22 in the reduced width state is locked to the convex engagement portion 44 of the reinforcing plate 40. At the same time, the locking projection 55a protruding through the reinforcing plate 40 penetrates the auxiliary hole 22d provided in the extension. Thereby, the contact portion 54 of the mounting device 50 '
Is a mode in which the reinforcing plate 40 and the extended portion 22 are held by the locking projections 55a.

Here, the pitch in the width direction of the convex engaging portion 44 corresponds to the interval in the width direction of the engaging hole 22c in the widened state, so that the other side of the expanded portion mounted in the reduced width state. And the other convex engaging portion of the reinforcing plate 40 is displaced. For this reason, the reinforcing plate 40 is bent so that the other convex engagement portion is disposed in the space between the expansion portion 22 and the tapered surface of the contact surface 54, and thereby,
Since the other convex engaging portion of the reinforcing plate protrudes from the surface of the reinforcing plate, it is possible to prevent the locking between the reinforcing plate and the extended portion from being hindered.

In this state, the widening device held by the mounting jig 50 'is inserted into the holding chamber through the opening of the holding rail with the film to be fixed interposed, and the screw is operated. Widen the extension. As a result, the positions of the engagement holes on the other side of the widened expansion portion and the convex engagement portions on the other side of the reinforcing plate coincide. Thereafter, the mounting jig 50 'is removed from the widening device, and the convex engaging portion of the reinforcing plate is fitted into the engaging hole of the expanding portion. In this case, the film can be fixed by easily and quickly inserting the widening device into the holding rail.

(Embodiment 2) Hereinafter, a film fixing device according to Embodiment 2 will be described. FIG. 15 shows a widening device 60 included in the film fixing device of the second embodiment. Widening device 60
In the widening device 20 of the first embodiment shown in FIGS. 2 and 3, a pair of auxiliary walls 62 a and 62 further extending in the longitudinal direction on a plane desired for the opening of the holding rail of the extension 22.
2b.

Each of the auxiliary walls 62a and 62b is fixed to each of the widening members 22a and 22b, and extends in the longitudinal direction. The auxiliary wall 62 has an opening 6 between the auxiliary walls.
4 and a concave portion having an auxiliary holding chamber 66 wider than this.

As described above, since the widening device 60 further has the auxiliary holding chamber 66, it is possible to hold the auxiliary widening device 70 (shown in FIG. 16) adapted to the size of the auxiliary holding chamber. Become. The auxiliary widening device 70 has substantially the same structure as the widening device 20 of the first embodiment shown in FIG. That is, the auxiliary widening device 70
An auxiliary expansion portion 71 abutting on both side walls in the auxiliary holding chamber and configured to be expandable; an auxiliary expansion device 72 accommodated in the auxiliary expansion portion for expanding the auxiliary expansion portion; and an auxiliary expansion device including an auxiliary expansion device. And an auxiliary screw for moving in the longitudinal direction.

FIG. 16 shows a cross section of the film fixing device 9 of the second embodiment. As can be seen from FIG.
The first film 8a is fixed between the first film 8a and the widening device 60, and the second film 8b is fixed between the auxiliary holding chamber 66 formed by the auxiliary wall 62 of the widening device 60 and the auxiliary widening device 70. . Therefore, in the film fixing device 9 of the second embodiment, it is possible to separately fix the two films.

The film fixing device 9 of the second embodiment
Is used in the same manner as in the film fixing device of the first embodiment. That is, the widening device 60 is inserted into the holding chamber from the opening of the holding rail while the first film is interposed in the reduced width state. Thereafter, an operating portion such as a screw provided on the end face of the extension portion is operated to operate the widening mechanism accommodated in the hollow of the extension portion. The widening mechanism widens these by pressing both side walls of the expansion portion, and is brought into a state of substantially contacting the side wall of the holding chamber. Thereafter, if desired, a reinforcing plate is attached, and the first film is appropriately fixed in this manner. In addition, in consideration of the thickness of the reinforcing plate, it is preferable that the reinforcing plate mounting surface of the extension portion be made lower around the periphery as shown in FIG. Thereby, the bottom surface of the auxiliary holding chamber 66 provided on these surfaces can be flattened.

Next, the auxiliary widening device 70 is inserted into the auxiliary holding chamber in a reduced width state with the second film interposed therebetween, and is similarly widened to fix the second film. These procedures are the same as those described in the first embodiment.

Further, as another type of film fixing device for fixing two films, a fixing device as shown in FIG. 17 may be used. In this embodiment, the holding rail 1
0 ′ has two holding chambers 74 and 76 in the depth direction.
7 are arranged. The structure of each widening device may be the same as the widening device of the first embodiment.

(Third Embodiment) FIGS. 18 and 19 show a film fixing device 106 according to a third embodiment. In the film fixing device 106, the expanding portion 122 and the widening mechanism 124
Is installed in the holding rail 110 with the film to be fixed interposed therebetween,
In the widening state of 0, the film is fixed. The film fixing device according to this embodiment has a configuration similar to that of the first embodiment shown in FIG. 2, but differs in the following points.

The holding rail 110 of the third embodiment has a vertically extending locking portion 112 which is continuous in the left and right side portions of the recess accommodating the widening device 120 and which extends in the thickness direction. 116 is formed to have an arrow-like shape in cross section.

The expanding portion 122 of the widening device 120 has a side wall portion 122a on both sides and a flat portion 122c therebetween, which are connected by a bent portion 122b.
The diameter of the side wall portion 122a is easily increased in the thickness direction by b.

The widening mechanism 124 of the widening device 120
Is an elongated member (sliding member) screwed to the operation screw 26
124d, a number of ribs (interlocking members) 124e rotatably connected on both sides thereof, and a columnar body 138 fixed to the expansion portion 122 and provided in a pair that slidably sandwiches the rib 124e. Having. The widening mechanism 124 according to the third embodiment further includes a pair of auxiliary ribs 130 connected to the upper and lower surfaces of the rib near the distal end of the rib 124e.
And an enlarged diameter portion 132 connected to the pair of auxiliary ribs 130. The enlarged diameter part 132 has a generally “U” shape in cross section, and both ends are a pair of auxiliary ribs 130.
It extends slightly beyond the point of connection and is bendable at the center. The auxiliary rib 130 is connected to the rib 124 e and the enlarged diameter portion 132 so as to be rotatable in the thickness direction of the widening device 120.

Hereinafter, the operation of fixing the film by the film fixing device 106 according to the present embodiment will be described. First,
The widening device 120 is inserted in a reduced width state from the opening 114 of the holding rail 110 into the holding chamber 116 with a film interposed therebetween. Next, the elongated screw 124d is slid in the longitudinal direction by driving the operation screw 26, whereby the rib 124e is rotated. At this time, the enlarged diameter portion 132 provided at the tip of the rib 124e is connected to the side wall 12
By pressing 2a, these intervals are widened. As shown in FIG. 18, preferably, the enlarged diameter portion 132 has an arcuate contact surface with the side walls 122a, so that the widening operation can be performed smoothly. As a result, the widening device is widened, and the pair of side walls 122a of the expanded portion 122 come into contact with both side surfaces of the holding chamber of the holding rail 110 with a film interposed therebetween (FIG. 19A).

In this embodiment, the widening device 1 is used.
Even in the widened state of 20, the elongated member (sliding member) 12
4d and the rib 124e so that the angle between the rib 124e and the rib 124e does not become a right angle, and the leading end of the rib 124e has a gap with both side walls 122a in the width direction.
Is designed.

Next, the pair of side walls 122a as described above
The operating screw 26 is further driven in the contact state between the holding member 116 and both side surfaces of the holding chamber 116 to further slide the elongated member 124d. Accordingly, the rib 124e interlocking with the elongated member 124d rotates so as to make the angle with the elongated member closer to a right angle.

Here, as described above, since the expanded portion and the side surfaces of the holding chamber are already in contact, the widening device cannot further widen the width. Therefore, the auxiliary rib 130 connected to the rib 124e attempts to rotate in the thickness direction in a direction to increase the angle with the rib 124e. As a result, the diameter of the enlarged diameter portion 132 is increased in the thickness direction of the widening device, and the expanded diameter portion 132 is pressed by the enlarged diameter portion 132 so that the side wall portions 122 a
Also, by changing the shape of the bent portion 122b, the diameter is increased in the thickness direction (FIG. 19B). The enlarged side walls 122a come into contact with the locking portions 112 projecting in the thickness direction of the holding rail 110, thereby preventing the width of the widening device 120 from being reduced. With such a structure, the widening device can be more reliably maintained in the holding rail. (Embodiment 4) FIGS. 20 to 24 show a film fixing device 206 of Embodiment 4. FIG. As shown in FIG. 23, the widening device 220 also serves as the expansion unit of the above-described embodiment, and includes a widening mechanism 224 configured to be expandable so as to abut on both side surfaces of the holding chamber 214 of the holding rail 210. Have.

As shown in FIGS. 20 to 22, the widening mechanism 22
Reference numeral 4 denotes a central elongated member 224c (central sliding member) between a pair of lateral elongated members 224a and 224b (side sliding members).
Are disposed, and a central elongated member 224c and a side elongated member 224 are provided.
A plurality of ribs 224d (interlocking members) are arranged in a row between a and 224b, and both ends of each rib 224d are connected to the central and side elongated members 224a, 224b and 224c, respectively.

The rib 224c is rotatably connected to the central and side elongated members 224a, 224b, 224c around each connection j. Also, the side elongated member 22
Spacers 224r and 224s are formed at one end of 4a and 224b to secure a space at a connection portion with the widening device 220 disposed adjacently.

As shown in FIG. 21, one side elongated member 22
A bearing portion 224e is formed inward from one end of 4a, a bearing portion 224g with an insertion hole 224f is formed inward from one end of the other side elongated member 224b, and a central elongated member 224c is formed. From the end face of the central elongated member 22
A screw hole 224h is provided in the axial direction of 4c.

The base end side (unthreaded portion) of the screw shaft of the screw 224j is inserted into the bearing hole 224i of the bearing portion 224e and the insertion hole 224f of the bearing portion 224g.
The tip side (male thread part) of the screw shaft is a central elongated member 224c
Screw hole 224h.

An intermediate portion 224m such as a washer is attached to an intermediate portion of the screw 224j, and the intermediate portion 224m is located between the bearing portion 224e and the bearing portion 224g. In addition, the inclusion 224m is a side elongated member 224b.
The bearing portion 22 of the side elongated member 224b is movable in a direction orthogonal to the axial direction of the side elongated member 224b.
4g attached. The side elongated member 224
The insertion hole 224f of the bearing portion 224g is formed in a long hole shape in the lateral direction so that the movement of b is not hindered by the screw 224j.

Next, the operation of the widening device 220 will be described. When the screw 224j is rotated in the screwing direction, the central elongated member 224c is drawn toward the bearing portion 224e, so that the central elongated member 224c relatively moves with respect to one of the side elongated members 224a, and each rib. 224d is a side elongated member 224a, 224b and a central elongated member 224.
c at right angles to the side elongated members 224a, 224
4b is widened, and the width of the widening device 220 is expanded.

Conversely, when the screw 224j is rotated in the screw retreating direction, the central elongated member 224c relatively moves with respect to the side elongated member 224a in the opposite direction, and each rib 224j is moved.
The angle d becomes smaller with respect to the side elongated members 224a, 224b and the central elongated member 224c, so that the interval between the side elongated members 224a, 224b is reduced, and the width of the widening device 220 is reduced.

As described above, in the widening device 220, the rib 2
By acting as a link, 24d serves as an expansion booster mechanism that widens the interval between the elongated members 224a, 224b by the relative movement of the central elongated member 224c with respect to the side elongated members 224a, 224b. ,
The bearing portion 224e of the side elongated member 224a, the bearing portion 224g of the side elongated member 224b, the inclusion 224m, and the screw hole 224h of the central elongated member 224c serve as an operation boosting mechanism that functions when an external operation is manually performed. No.

Further, since the distance between one end of the side elongated member 224a and the screw 224j is kept constant by the bearing portion 224e, the side elongated member 224a and the center elongated member 2 are fixed.
If the distance between the spacers 224r and 224s is increased, one end of the elongated side member 224a including the spacer 224r is curved inward, and the distance between the spacers 224r and 224s is reduced. Therefore, in the present embodiment, as shown in FIG. 22, a bar-shaped spacing member 224n is interposed between the spacers 224r and 224s to correct the spacing.

The spacing member 224n is provided at the middle with the elastic portion 224.
The engagement grooves 224t and 224u are formed on the inner side of the spacers 224r and 224s. Then, as shown by a two-dot chain line in FIG. 22, after the spacing member 224n is positioned between the spacers 224r and 224s in an oblique state, the spacing member 224n is moved to the spacers 224r and 224r.
The spacing protrusion 224n can be interposed between the spacers 224r and 224s by raising the locking protrusion 224q at right angles to 24s and fitting the locking protrusions 224q into the fitting grooves 224t and 224u. Note that the expansion and contraction portion 224p is contracted, so that the locking projection 224q can be easily fitted into the fitting grooves 224t and 224u.

The widening device 220 is formed of a flexible material except for the screw 224j and the inclusion 224m, and the widening mechanism 224 is arranged to be curved along the curved frame 4 of the house 1. ing.

Further, as shown in FIG. 20, a circular central hole 224 is formed in the central portion of the central elongated member 224c of the widening device 220.
v is an elongated end hole 224x long in the axial direction at both ends.
Are drilled respectively. And the mounting jig 5
In the case where the widening device 220 is constructed by using the centering hole 0, the central hole 224v of the central elongated member 224c is fitted into the locking projection 55a at the center of the contact surface 55 of the mounting jig 50, and the contact surface 5
The end holes 224x of the central elongated member 224c are fitted into the locking projections 55a at both ends of the fifth member 5. Widening mechanism 224
When the bending is performed, the widening mechanism 224 is attached along the curved contact surface 55 of the mounting jig 50 as described above, but the locking projection 55a and the end hole 224x accompanying the bending are attached. Can be absorbed by forming the end hole 224x into a long hole shape.

As shown in FIG. 23, the holding rail 210 has an opening 210a into which the widening device 220 is inserted, and is widened inward from the opening 210a to hold the inserted widening device 220 in a widened state. Holding room 210b
And The holding rail 210 has an opening 210a.
On the surface opposite to the side provided with the convex portions 210c, which also serves to prevent dew condensation, are provided as described above.
d is formed in a flat plate shape, and the convex portion 210 of the holding rail 210 is formed.
At c, it is fixed to the frame 4 of the house 1, and the fixing can be performed using a known fastener.

Next, a method for fixing the film 8 by the film fixing device 206 will be described with reference to FIGS. As shown in FIG. 23, the film 8 is positioned on the holding rail 210, and the opening 2 is
After being inserted into the holding chamber 210b from 10a, the widening device 2
By expanding 20, the film 8 is sandwiched between the widening device 220 and the holding rail 210. The widening device 22
The rotation of the screw 224j for expanding 0 is performed using a known tool as described above. Mounting jig 5 used in this case
23, a projection 55a is provided on the contact surface 55 as shown in FIG.
Push it into 0.

In the same manner, the film widening device 220 is positioned in the holding rail 210 to fix the film 8, but the widening device 22 inserted first is sequentially pushed down by the widening device 220 inserted later. (Figure 2
4).

In the longitudinal direction of the holding rail 210,
The widening devices 220 are continuously arranged in the holding rail 210. However, since the spacers 224r and 224s are interposed between the adjacent widening devices 220, all the widening devices 220 are set. When the position of the widening device 220 is adjusted after finishing, the spacer 224 is adjusted.
Since the known tool of the screw 224j can be operated using the space formed between the widening device 220 and the adjacent widening device 220 by r and 224s, the position adjustment of the widening device 220 after the widening device 220 is installed. Can be easily performed.

FIGS. 25 and 26 show other examples of the holding rail. In this example, the side wall of the holding rail 211 is
1e is formed in a bellows shape continuous in the vertical direction. Therefore, in the fixing method of the film 8 in the case of the present example, the widening device 220 in the contracted state is pushed into the bottom of the holding chamber 210b, and the widening device 220 is expanded so that the long side member 224a is located in the lowest bent portion 211e. To hold the film 8. In the mounting jig 50 used in this case, the protrusion dimension of the projection 55b provided on the contact surface 55 is set to a size that can push the widening device 220 to the bottom of the holding rail 210.

Hereinafter, similarly, the film widening device 220 is positioned within the holding rail 210 to fix the film 8 (FIG. 2).
6).

FIGS. 23 to 26 show an example in which the film 8 is used in a place where the film 8 is quadrupled like the opening frame of the house 1.
The design of the side wall shapes of 10, 211 is appropriately changed.

FIGS. 27 to 29 show other examples of the holding rail.

The holding rail 212 shown in FIG.
A curve absorbing portion 212b is formed by bending a part of 2a so as to protrude outward, and when a force for bending the holding rail 212 acts, the curve absorbing portion 212b is flattened to facilitate the bending process. It is set as follows. Accordingly, the workability of attaching the holding rail 212 along the curved frame of the house 1 at the construction site is improved.

The holding rail 213 shown in FIG.
A slit 213b is formed from the upper end edge of the holding rail 3a toward the bottom, and a plurality of slits 213b are provided on the side wall 213a at a predetermined interval (for example, an interval of 10 cm).
The holding rail 213 is set so as to be bent at the slit 213a when the 11 is bent. Therefore, at the construction site, the holding rail 211 can be bent along the curved frame of the house 1 so as to be along the curved frame.

The holding rail 214 shown in FIG.
The slits 214c are continuously formed upward from the entire length in the width direction a and from the lower edge of the side walls 214b, and a plurality of the slits 214c are provided at predetermined intervals (for example, 10 cm intervals) in the length direction of the holding rail 214, Holding rail 214
Is set so that the holding rail 214 is bent at the slit 214c portion when a force for bending is applied. Therefore, similar to the holding rail 213 in FIG.
At the construction site, the holding rail 214 can be bent in a bent line shape in accordance with the curved frame of the house 1, and
The holding rail 213 is bent by bending the holding rail 213.
Is deformed in a direction to close the slit 214c, so that the widening device 220 and the like can be protected.

Note that the curved absorbing portion 212b and the slit 21
3b and 214c may be provided on the holding rail of the above embodiment.

Although the embodiment of the present invention has been described above as an example, various modifications and changes can be made. The film fixing device of the present invention can be used for fixing various coating materials such as PO-based films, fluorine-based films, and vinyl. In addition, the holding rail, the extension, and the widening device used in the present invention are formed of various appropriate materials such as metal and resin depending on the application.

[0112]

As described above, according to the present invention, the film is properly fixed between the holding chamber of the holding rail and the expanded portion of the widening device in the widened state. Since the widening device is inserted into the holding rail in a reduced width state, it is difficult to damage the film interposed therebetween. Further, the widening is performed via an externally-operated booster mechanism and an expansion booster mechanism driven by the externally-operated booster mechanism, so that the film can be stably and easily fixed.

[Brief description of the drawings]

FIG. 1 is an overall view of a film stretching house to which a film is fixed by a film fixing device according to the present invention.

FIG. 2 is a cross-sectional view of the film fixing device according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a widening device of the film fixing device according to the present invention.

FIG. 4 is a perspective view showing one embodiment of a widening mechanism of the widening device according to the present invention.

5 shows a cross-sectional view from above of a widening device according to the present invention using the widening mechanism shown in FIG. 4 and side views of both ends.

FIG. 6 shows a cross-sectional view from above and a side view of both ends of another embodiment of the widening device according to the present invention.

FIG. 7 shows a cross-sectional view from above and a side view of both ends of still another embodiment of the widening device according to the present invention.

FIG. 8 is a perspective view showing still another embodiment of the widening mechanism of the widening device according to the present invention.

9 shows a sectional view from above of a widening device according to the present invention using the widening mechanism shown in FIG. 8 and a side view of both ends.

FIG. 10 shows a cross-sectional view from above and a side view of both ends of still another embodiment of the widening apparatus according to the present invention.

FIG. 11 shows a reinforcing plate included in the widening device according to the present invention.

FIG. 12 is a perspective view showing a mounting jig of the film fixing device of the present invention.

FIG. 13 is a cross-sectional view showing a mounting jig of the film fixing device of the present invention.

FIG. 14 is a partial sectional view of a mounting jig according to another embodiment of the film fixing device of the present invention.

FIG. 15 is a perspective view illustrating a widening device included in the film fixing device according to the second embodiment of the present invention.

FIG. 16 is a sectional view of a film fixing device according to a second embodiment of the present invention.

FIG. 17 is a diagram showing still another example of Embodiment 2 of the present invention.

FIG. 18 is a cross-sectional view of a film fixing device according to a third embodiment of the present invention as viewed from above the widening device.

FIG. 19 is a sectional view of a film fixing device according to a third embodiment of the present invention. FIG. 19A shows a state before the enlarged diameter portion is opened, and FIG. 19B shows a state where the enlarged diameter portion is opened.

FIG. 20 is a plan view of a film fixing device according to a third embodiment of the present invention, which is partially cut away from an upper direction of a widening device.

FIG. 21 is a partially broken plan view showing the operation of the film widening device of the film fixing device according to the third embodiment of the present invention.

FIG. 22 is a partially broken plan view showing a state where the widening device of the film fixing device according to the third embodiment of the present invention is opened.

FIG. 23 is a cross-sectional view illustrating a state in which a film is fixed by the film fixing device according to the third embodiment of the present invention.

FIG. 24 is a sectional view of a film fixing device according to a third embodiment of the present invention.

FIG. 25 is a cross-sectional view showing a film fixing operation performed by another example of the film fixing device according to the third embodiment of the present invention.

FIG. 26 is a sectional view showing another example of the film fixing device according to the third embodiment of the present invention.

FIG. 27 is a sectional view showing another example of the holding rail of the film fixing device according to the third embodiment of the present invention.

FIG. 28 is a perspective view showing still another example of the holding rail of the film fixing device according to the third embodiment of the present invention.

FIG. 29 is a perspective view showing still another example of the holding rail of the film fixing device according to the third embodiment of the present invention.

FIG. 30 shows a conventional film fixing device.

FIG. 31 shows another conventional film fixing device.

[Explanation of symbols]

 Reference Signs List 6 film fixing device 8 film 10 holding rail 12 opening 14 holding chamber 16 convex portion 18 retaining 20 widening device 22 expansion unit 24 widening mechanism 26 operation screw

Claims (16)

[Claims] 1. A rail-type film fixing device for a film-spreading house, comprising: a recess having an opening extending in a rail longitudinal direction and a holding chamber widened inward from the opening; A holding rail fixed to a frame of the house, and a widening device that can be widened by an external operation in the holding chamber, at least a part of which is housed in the concave portion with the house film sandwiched between the holding rails. The widening device includes a sliding member and an interlocking member interlocked with the sliding member, and operates the sliding member and the interlocking member via an expansion boosting mechanism to expand the width, and externally. A film fixing device characterized in that the film booster is configured to drive the expansion booster mechanism via an operation booster mechanism by an operation. 2. A rail-type film fixing device for a film-spreading house, comprising: a recess having an opening extending in a rail longitudinal direction and a holding chamber widened inward from the opening; A holding rail fixed to a frame of the house, and a widening device that can be widened by an external operation in the holding chamber, at least a part of which is housed in the concave portion with the house film sandwiched between the holding rails. The widening device has an elongated shape to be received in the concave portion of the holding rail, and has a pair of side walls having a hollow portion between the opening portion of the concave portion and the holding chamber. An extended portion that can be widened so that the pair of side walls abut on both side surfaces of the holding chamber in a room; and an extended portion that can be accommodated in a hollow portion of the extended portion, An extended sliding member and an interlocking member interlocked with the sliding member are provided, and in the housed state in the hollow portion, the sliding member and the interlocking member are operated via an expansion boosting mechanism, and a pair of the extended portion is operated. An operating portion that can press the side wall to widen the expansion portion; and an operation portion provided on an end surface of the expansion portion and that drives the expansion booster mechanism via an operation booster mechanism by an external operation. A film fixing device, comprising: 3. An expansion booster mechanism of the operating portion includes a plurality of mutually parallel links connected to the sliding member at an inclined angle, wherein the links are connected to each other by the sliding members. Is arranged so as to widen the expansion portion by making the angle to the sliding member closer to a right angle by relative movement of the sliding member in the longitudinal direction. The film fixing device according to claim 2, wherein the film fixing device is arranged so as to slide in the direction. 4. An expansion booster mechanism of the operating portion, further comprising:
A cam plate extending parallel to the sliding member so as to cooperate with the sliding member, wherein one or both of the sliding member and the cam plate have a plurality of inclined mutually parallel cam surfaces. And the relative movement in the longitudinal direction thereof is arranged so as to be guided by the cam surface by the relative movement so as to expand the expansion portion. The film fixing device according to claim 2, wherein the member and the cam plate are arranged so as to relatively move in the longitudinal direction. 5. Further, a fixed reinforcing portion cooperating with the extension portion is provided, and the extension portion has two flat portions connected to the pair of side walls of the extension portion and facing an opening of the holding rail. The fixed reinforcing portion includes a holding plate having a width extending over the two flat portions and extending in a longitudinal direction of the extension portion, wherein the flat portion and the holding plate are widened such that the expansion portion contacts the holding chamber. The film fixing device according to any one of claims 2 to 4, further comprising an engaging portion that engages with the concave and convex portions when in the state. 6. An expansion device further comprising an auxiliary widening device, wherein the extension portion includes an auxiliary wall projecting from each of the pair of side walls toward an opening of the concave portion while being accommodated in the concave portion of the holding rail. An opening and an auxiliary holding chamber for accommodating the auxiliary widening device through the opening are formed between the auxiliary walls, and the auxiliary widening device has an elongated shape to be accommodated in the auxiliary holding chamber. And a pair of auxiliary side walls that can be inserted into the auxiliary holding chamber through the opening, and have a hollow portion therebetween, such that the pair of auxiliary side walls abut both side surfaces of the auxiliary holding chamber in the auxiliary holding chamber. An auxiliary extension portion that can be widened; and a sliding member that can be housed in the hollow portion of the auxiliary extension portion and that extends in the longitudinal direction of the auxiliary extension portion and an interlocking member that interlocks with the sliding member. For expansion when stored in An auxiliary operating portion configured to actuate the sliding member and the interlocking member via a force mechanism to press a pair of auxiliary side walls of the auxiliary expanding portion to widen the auxiliary expanding portion; and an end portion of the auxiliary expanding portion. 6. The film fixing device according to claim 2, further comprising: an auxiliary operation unit that drives the expansion boosting mechanism via an operation boosting mechanism by an external operation. 7. A rail-type film fixing device for a film stretching house, comprising: an opening extending in a longitudinal direction of the rail; and a widened holding chamber which is located first as going inward from the opening. And a holding chamber provided through the stenosis in
A holding rail fixed to a frame of the film-expanding house, and a widening device that can be housed in the holding chamber with a house film sandwiched between the holding rail, and can be widened in these holding chambers by an external operation. The widening device has an elongated shape to be accommodated in the holding chamber of the holding rail, has a pair of side walls that can be inserted into the holding chamber from the opening, and has a hollow portion therebetween. An extended portion that can be widened so that the pair of side walls abut on both side surfaces of the holding chamber in a room; and a sliding member that can be housed in a hollow portion of the extended portion and extends in a longitudinal direction of the extended portion. An interlocking member interlocking with the sliding member is provided, and in the housed state in the hollow portion, the sliding member and the interlocking member are operated via an expansion boosting mechanism to press a pair of side walls of the expansion portion. An operating portion provided on an end face of the expanding portion, the operating portion being driven by an externally operated operating booster mechanism to drive the expanding booster mechanism. A film fixing device. 8. A rail-type film fixing device for a film-spreading house, comprising: a recess formed by an opening extending in a rail longitudinal direction and a holding chamber widened inward from the opening; A holding rail fixed to a frame of the house, and a widening device which is housed in the holding chamber with the film for the house sandwiched between the holding rails, and which can be widened by an external operation in the holding chamber, The widening device includes a sliding member and an interlocking member that interlocks with the sliding member, and operates the sliding member and the interlocking member via an expansion booster mechanism to move the sliding member outward. A film fixing device, comprising: an operating portion that can be widened by being operated; and an operating portion that drives the expanding booster mechanism via an operating booster mechanism by an external operation. 9. The operating unit further comprises an elongated central sliding member provided between a pair of elongated lateral sliding members disposed so as to be close to and separated from each other, and a movable member disposed between the central sliding member and the lateral sliding member. A plurality of interlocking members are arranged in a row, and both ends of each interlocking member are hinged to the center sliding member and the side sliding members, respectively, and bearings are directed inward from the ends of the side sliding members. The center sliding member is provided with a screw hole in the axial direction of the center sliding member from the end face, the screw is supported by the bearing portion, and the tip of the screw is screwed into the screw hole of the center sliding member. Then, the relative movement of the central sliding member with respect to the side sliding member in the longitudinal direction with respect to the side sliding member due to the screw advance and retreat causes the interlocking member to approach a right angle from a state inclined with respect to the central sliding member and the side sliding member. 9. The apparatus according to claim 8, wherein the distance between the side sliding members is increased. The film fixing device as described in the above. 10. The film according to claim 8, wherein the holding rail has a widened holding chamber located first and a holding chamber provided further inside through a constriction. Fixing device. 11. A jig for mounting the film fixing device according to claim 1, wherein the jig is used when mounting the widening device on the holding rail fixed to a frame for a house. An elongated contact portion that contacts the widening device in use, and a locking portion provided at the corresponding contact portion and capable of retaining the widening device by locking the portion of the expansion portion facing the opening of the holding rail. A mounting jig comprising: a grip portion which is coupled to the contact portion on a side away from the widening device with respect to the contact portion during use and is gripped by a user. 12. The mounting jig according to claim 11, wherein the locking portion includes a projection that locks into a plurality of holes provided in a holding plate of the widening device. 13. An elongated support portion extending substantially parallel to the contact portion, a central support extending from a substantially central portion in a longitudinal direction of the contact portion to the support portion, and connecting the contact portion and the support portion. An end post extending from a position near both ends of the contact portion to the support portion and connecting the contact portion and the support portion; a male screw portion provided on one or both of the central support and the end post; And a female screw portion provided on the contact portion or the support portion so as to be screwed into the contact portion or the support portion. The contact portion may be curved in accordance with advance / retreat of the central support or the end support by the male screw. The mounting jig according to claim 11, wherein the mounting jig is configured as described above. 14. A holding rail which forms a part of a film fixing device for a film stretching house and is fixed to a frame of the film stretching house, wherein the holding rail is provided with an opening extending in a longitudinal direction and an inner side of the opening. A side wall and a bottom wall connecting the side walls so as to form a concave portion having a widened holding chamber, and the bottom wall has a portion near the center between the side walls facing away from the opening. A holding rail that protrudes. 15. A curved absorbing portion is formed by curving a part of the both side walls so as to protrude outward, and the curved absorbing portion is provided when the curved side is arranged along a curved frame of a film stretching house. The holding rail according to claim 14, wherein the holding portion is configured to be deformed in a flattening direction. 16. The holding rail according to claim 14, wherein a slit is formed from an upper edge of each of the side walls toward the bottom wall, and the slit is provided on the side wall at a predetermined interval.