JP3052076U - Lower rail traveling type sliding door device for greenhouse - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a sliding door device for opening and closing an entrance provided on a wife side of a greenhouse. SOLUTION: A lower rail is installed along a lower edge of an entrance, and a door wheel which rolls on the lower rail is attached to a lower portion of the sliding door. A guide rail is provided along the upper edge of the entrance to restrict and guide the upper part of the sliding door. The lower rail is configured such that a necessary length portion can be attached and detached about the width of the frontage of the entrance.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention belongs to the technical field of a sliding door device for opening and closing an entrance provided on a wife's face of a greenhouse.

[0002]

[Prior art]

 The entrance to the greenhouse is usually provided on the wife's side, and it has become common practice in recent years to install doors to open and close the entrance. Traditionally, greenhouse doors were also of the revolving type, but recently many sliding doors have been used.

[0003] The conventional sliding door apparatus for greenhouses is mainly of the hanging type in which a sliding door is suspended from an upper rail by a door roller. The reason is that the lower rail is environmentally liable to become dirty with mud and garbage, and is often stepped on by people or vehicles and bent, which makes it difficult for the sliding door to move. The lower rail to be installed is difficult to reach a horizontal level due to uneven ground and it is difficult to maintain the levelness. Then, the lower rail is pushed up by the freezing of the ground or the frost pillar, which impairs the mobility of the sliding door.

[0004]

[Problems to be solved by the present invention]

 As a special feature in the structure of the hanging type sliding door device, the installation and installation work on the wife's face of the greenhouse is extremely troublesome and time-consuming. That is, since the length of the upper rail is limited and a work space cannot be secured, it is impossible to implement a method in which a door roller is firstly mounted on the upper part of the hanging sliding door and fitted in the longitudinal direction of the rail. In addition, a method of attaching a door wheel to the upper part of a suspended sliding door, combining this with an upper rail, and then attaching the upper rail to the framework of a greenhouse is also possible unless heavy machinery is used. Etc. are too large to carry out. In the end, it is customary to attach the upper rail to the frame of the greenhouse, and then lift the sliding door from below and attach it to the suspension type door wheel mounted on the rail. Even in this case, the task of lifting the sliding door, even temporarily, to achieve the connection with the door wheel is a great deal of hard work. As a matter of course, when the sliding door that was finally installed as described above is damaged and replaced, or when the sheet that is stretched over the sliding door is replaced due to aging (durable life) or damage, the work must be performed once. Since the sliding door must be removed from the upper rail car, such maintenance is extremely troublesome and very troublesome.

[0005] Recently, the size of a greenhouse is increasing, and the size of a sliding door device is inevitably increasing. Even if the greenhouse becomes large, the frame of the house is nothing more than a simple structure in which pipes are assembled with joints, and its bearing capacity is limited. Therefore, in order to support a large-sized hanging type sliding door device for opening and closing operation, the load burden is too large and the frame of the house is distorted. As a result, there is a problem that the opening and closing operation of the sliding door device is malfunctioned.

Particularly, a large-sized sliding door device is greatly affected by a wind load, and a rattling sound due to wind pressure, a squeaking sound at the time of opening / closing operation, and other noises are bothersome to the ears. It is an issue to be requested. Therefore, the purpose of the present invention is to prevent the opening / closing operation from being disturbed by mud or debris that may be a concern for the lower rail traveling type, to facilitate the installation and installation work and subsequent maintenance, and to facilitate the framework of the house. It is an object of the present invention to provide a lower rail traveling type sliding door device which can reduce a load on a vehicle and rationally solve the problem of rattling noise, squeaking noise and other troublesome noises.

[0007] A second object of the present invention is to allow a required length of the lower rail to be attached to and detached from the greenhouse as required, centering on the width of the doorway, so that a tractor and other vehicles can enter and exit the greenhouse. It is an object of the present invention to provide a lower rail traveling type sliding door device which does not obstruct the vehicle.

[0008]

[Means for Solving the Problems]

 As a means for solving the above-mentioned problems, a sliding door device for a vinyl house according to the invention described in claim 1 is a sliding door device for opening and closing an entrance provided on a wife's face of a greenhouse. A lower rail is installed along the lower edge of the doorway, and a door wheel that rolls on the lower rail is attached to the lower part of the sliding door, and the upper part of the sliding door along the upper edge of the doorway. And a guide rail for restricting the guide rail is provided, and the lower rail is configured such that a required length portion thereof is detachable around the width of the entrance.

According to a second aspect of the present invention, the lower rail in the lower rail traveling sliding door device for a greenhouse according to the first aspect has a substantially hat-shaped steel cross section and a removable rail portion. For the connection with the other fixed rail, the overlapped part with the similar cross section reduced by the thickness equivalent is formed at the end of the fixed rail, and the end of the removable rail is connected. It is characterized by being overlapped and joined on the overlapped portion, and fixed by a sliding joint for restraining both overlapping leg portions.

[0010]

Embodiments and Examples of the Invention

 A lower rail traveling type sliding door device for a greenhouse according to the invention described in claim 1 is a device that opens and closes an entrance 2 provided on a wife surface of a greenhouse 1 as shown in FIG. It is suitably implemented for use. FIG. 1 shows the entire configuration of the lower rail traveling type sliding door device according to the present invention, and FIG. 2 is installed in the vinyl house 1, and the two double opening type sliding doors 4, 4 are fully opened. A state in which a detachable rail 3 ′ within the width of the entrance 2 is removed is illustrated.

More specifically, a lower rail 3 is provided along a lower edge of the entrance 2. A door wheel 5 that rolls on the lower rail 3 is attached to the hollow portion of an inverted channel-shaped steel frame 4a that forms the lower side of the sliding door 4 (FIG. 3). In the embodiment shown in FIG. 3, the lower rail 3 has a substantially hat-shaped steel cross section, and the lower horizontal legs 3a, 3a on both sides thereof are placed on the ground, and the projection 3b is set upright. Used in an embodiment. The lower rail 3 has a leg 3a firmly fixed to a column 9 forming a framework of the greenhouse 1 using a rail receiver 7 and a U-bolt 8 embedded and installed in the ground. The wheel of the door roller 5 rides on the protrusion 3b. Therefore, all the weight of the sliding door 4 is directly transmitted to the ground via the lower rail 3 and is supported, so that no load is applied to the frame of the greenhouse 1. Therefore, this sliding door device is suitable for large greenhouses.

[0012] Even if mud or debris falls on the projection 3b of the lower rail 3, it usually rolls down to the lower leg 3a. Even if mud or debris adheres to the convex portion 3b, once the door wheel 5 travels and passes over it, it is crushed or pushed away by the weight of the door wheel 5 or removed with vibration. It will not hinder driving. Cleaning of mud and dust falling on the leg 3a can be easily performed as needed.

A V-shaped groove (a U-shaped groove or another concave groove) is formed on the outer peripheral surface of the wheel of the door roller 5 shown in FIG. 3 so as to ride on the convex portion 3 b of the lower rail 3. It is designed to prevent derailment as much as possible. However, it is sufficient that the concave groove 5a of the wheel does not come off on the convex portion 3b of the lower rail 3 and is not limited to the V-shape. It can be implemented with U-shaped or other concave grooves. The wheels of the door roller 5 are also preferably made of a synthetic resin so as not to make squeaks, but in some cases also those made as metal die-cast products.

On the other hand, along the upper edge of the entrance 2, a guide rail 6 for restraining and guiding the upper part of the sliding door 4 is installed as an upper rail. In the embodiment shown in FIG. 3, the guide rail 6 is formed of an inverted channel-shaped steel member, and is firmly fixed to the column 9 of the greenhouse 1 also using the rail receiver 10 and the U bolt 8. The upper part of the sliding door 4 is fitted into the groove of the guide rail 6 and is restrained. Therefore, the guide rail 6 has a considerable tolerance for the vertical displacement of the sliding door 4.

As a means for preventing the squeak noise of the sliding door 4 and the rattling noise of the sliding door 4 due to wind pressure, the upper side of the sliding door 4 is provided on both the inside and outside of the frame forming the upper side of the sliding door 4. A slider 11 made of synthetic resin, which slightly protrudes from the surface and directly hits the inner surface of the guide rail 6 with low friction, is attached. The slider 11 is preferably made of a synthetic resin from the viewpoint of preventing the squeak and rattling of the sliding door 4. However, as long as the slider 11 has a shape that flatly hits the inner surface of the guide rail 6, a metal die-cast product or A slider of a pressed product such as a steel plate can be used in the same manner.

Since the slider 11 operates as described above, even if the sliding door 4 is large and receives a large wind pressure, there is almost no rattling noise. Next, in the embodiment of FIG. 2, a portion of the lower rail 3 having a length approximately equal to the width L of the entrance 2 is configured as a detachable rail 3 ′. FIG. 2 shows a state in which the rail 3 ′ is removed so that vehicles such as tractors, automobiles, and carts do not obstruct the greenhouse 1 from entering or exiting. More specifically, in the embodiment shown in FIG. 2, the rail 3 'of a length within the width L of the entrance 2 of the plastic greenhouse 1 is detachable. However, if necessary, the lower rail portion longer than the frontage width L may be configured to be detachable.

In the embodiment shown in FIG. 4 as a means for attaching and detaching the rail 3 ′, the inner end of the lower rail 3 on the fixed side is reduced by the thickness thereof while maintaining a similar cross-sectional shape (drawing process). The overlapped portion 12 is formed with a length of about 40 mm. Therefore, the detachable rail 3 'can be connected to the overlapped portion 12 so as to be superimposed on the overlapped portion 12, and no step is formed at the connection portion, so that the sliding door 5 of the sliding door 4 travels smoothly. In addition, the connection strength is large because the parts are overlapped and joined. Moreover, as means for mechanically restraining the connecting portion of the lower rail 3, FIG. 4 shows a sliding-type device in which the overlapping portion of the hat-shaped steel horizontal legs 3 a, 3 a is sandwiched from above and below and restrained. An embodiment using a joint 13 is shown.

In the embodiment of FIG. 2, the width W of the sliding door 4 is generally about 1 m to 1.2 m, and the width L of the doorway 2 is about 2 m to 2.4 m. Therefore, the detachable rail 3 'having a length similar to the width L of the frontage is approximately 1.5 m to 2.2 m in length according to the above-described example of dimensions. Therefore, the detachable rail 3 'longer than the width dimension W of one sliding door 4 is removed, and in the part where the lower rail 3 is removed, the traveling road surface is large enough to allow the tractor and other various vehicles to enter and exit. As a matter of course, the sliding door 4 can be fitted or removed from the upper and lower rails 3 and 6 in the portion without the lower rail. In other words, in the case of the lower rail traveling type sliding door device, the lower rail 3 and the guide rail (upper rail) 6 are attached to the framework of the greenhouse 1 and the sliding door 4 is fitted later (assembly method). The installation of the sliding door device is extremely easy. Inevitably, it is relatively easy to replace a broken sliding door or replace a sheet on a sliding door.

[0019]

[Effects of the present invention]

 The lower rail traveling type sliding door device for a greenhouse according to the present invention does not cause any trouble in opening and closing operation due to mud and debris which are concerned about the lower rail traveling type. The installation and installation of the sliding door device to the greenhouse and the subsequent maintenance can be performed easily. Further, since the load on the frame of the sliding door device can be reduced, it is particularly suitable for a large house, and the problem of squeaking noise and other troublesome noise can be solved.

Further, if necessary, the length of the lower rail within the width of the doorway can be attached and detached, which is convenient for tractors and automobiles entering and exiting the greenhouse.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall configuration of a lower rail traveling type sliding door device according to the present invention.

FIG. 2 is an elevation view in which the lower rail traveling type sliding door device according to the present invention is applied to a wife of a greenhouse.

FIG. 3 is a sectional view of a sliding door.

FIG. 4 is a perspective view showing a connection portion of a lower rail.

[Explanation of symbols]

 Reference Signs List 1 greenhouse 2 doorway 3 lower rail 4 sliding door 5 door roller 6 guide rail (upper rail) L frontage width 3 'detachable rail

Claims (2)

[Utility model registration claims] 1. A sliding door device for opening and closing an entrance provided on a wife's face of a greenhouse, wherein a lower rail is installed along a lower edge of the entrance, and a lower part of the sliding door rides on the lower rail. A rolling door roller is attached, A guide rail for restraining and guiding the upper part of the sliding door is provided along an upper edge of the entrance, and the lower rail has a required length centering on the entrance. A lower rail traveling type sliding door device for a greenhouse, characterized in that each portion is configured to be detachable. 2. The lower rail has a substantially hat-shaped steel cross section, and a connecting portion between the detachable rail portion and another fixed rail portion has a cross section similar to the cross section at the end of the fixed rail portion. The overlapped portion reduced by the thickness equivalent to the thickness is formed,
The end of a removable rail part is overlap | superposed and joined on the said to-be- overlapped part, and it fixes with the sliding-type joint which restrains both overlapped leg parts, The characterized by the above-mentioned. Rail-type sliding door device for a converted greenhouse.