KR102395639B1 - Smart cultivation system with height controllable utility supplying apparatus - Google Patents

Abstract

The present invention relates to a smart cultivation system equipped with a height-controlled utility supply device, and more particularly, to adjust the height of the supply device for supplying water, nutrient solution, etc. necessary for plant growth according to the growth stage of the plant or the type of plant. It relates to a smart cultivation system equipped with a height-adjustable utility supply that can be adjusted and can selectively close the growing area of plants when necessary, so that plants can be grown more effectively.
A smart cultivation system with a height-adjustable utility supply device according to the present invention includes: a vegetation frame provided with a planting space for plants; a spraying unit movably installed in the vegetation frame; a first injection unit moving device configured in the vegetation frame to move the injection unit along the growth direction of the plant; and a second injection unit moving device configured to move the injection unit in a direction perpendicular to the growth direction of the plant.

Description

SMART CULTIVATION SYSTEM WITH HEIGHT CONTROLLABLE UTILITY SUPPLYING APPARATUS

The present invention relates to a smart cultivation system equipped with a height-controlled utility supply device, and more particularly, to adjust the height of the supply device for supplying water, nutrient solution, etc. necessary for plant growth according to the growth stage of the plant or the type of plant. It relates to a smart cultivation system equipped with a height-adjustable utility supply device that can be adjusted and can selectively close the cultivation area of plants when necessary, so that plants can be grown more effectively.

In general, as society is industrialized and modernized, the housing type is converted to a common house such as an apartment. there is.

The method of cultivating plants on the veranda or indoors of an apartment house is a form of planting and cultivating plants in a cultivation box, and since the cultivation box is installed flat on the floor, the cultivation area per unit space is small and the cultivation efficiency is low.

As a solution to this problem, a stacked flowerpot in which a plurality of flowerpots are vertically stacked has been proposed, but the structure is complicated and requires a lot of equipment cost. It is difficult to manage and is not widely used.

And, in recent years, wall vegetation technology has been attempted by directly attaching a plant cultivation module to the wall to produce a wall greening or vertical garden, but it is difficult to supply moisture or fertilize carbon dioxide for plant growth, making practical application impossible. is in

In addition, the above-mentioned wall vegetation technology can install a supply device such as a spray nozzle for supply of water or fertilization of carbon dioxide in the plant cultivation module, but when the plant grows and grows taller, it causes an interference phenomenon and is used as a fixed supply device. has a limit in that it cannot perform an appropriate supply operation.

In addition, the conventional wall vegetation technology does not grow plants in an enclosed space such as a greenhouse, but rather grows plants on an exposed wall.

In addition, since it is difficult to periodically supply water while installed in a building, etc., the wall vegetation technology has the disadvantage that if a large amount of water is given at once, it will flow down, causing damage to passersby, and severe waste of water.

Korean Patent No. 10-1105543 "A plant cultivation container for three-dimensional greening and a three-dimensional greening system using the same" Korean Patent No. 10-1726567 "Vertical Plant Cultivation Apparatus"

The present invention has been proposed in view of the above, and a height-adjustable utility supply device capable of adjusting the height of a supply device for supplying water, nutrient solution, etc. necessary for plant growth according to the growth stage of the plant or the type of plant. It aims to provide a smart cultivation system equipped with

Another object of the present invention is to provide a smart cultivation system equipped with a height-adjustable utility supply device to selectively seal the cultivation area of plants even in an exposed space.

In order to achieve the above object, a smart cultivation system equipped with a height-adjustable utility supply device according to the present invention includes: a vegetation frame provided with a planting space for plants; a spraying unit movably installed in the vegetation frame; a first injection unit moving device configured in the vegetation frame to move the injection unit along the growth direction of the plant; and a second injection unit moving device configured to move the injection unit in a direction perpendicular to the growth direction of the plant.

The first injection unit moving device may be configured to include a first moving unit installed in the vegetation frame to protrude and protrude, and a first driving unit for applying a driving force to the first moving unit.

Preferably, the first moving part is a first guide rail member installed to face one side and the other side of the upper part of the vegetation frame, a second guide rail member installed to face one side and the other side of the lower part of the vegetation frame, the first guide It may include; a first moving member movably installed on the rail member, and a second moving member movably installed on the second guide rail member.

The first driving unit may include a rack formed along a longitudinal direction of the first moving member and the second moving member, a driving gear meshed with the rack, and a first driving motor to which the driving gear is coupled.

The second injection unit moving device may include: a second moving unit installed in the first moving unit and connected to the injecting unit; and a second driving unit for applying a driving force to the second moving unit.

Preferably, the second moving part, a driving pulley disposed on the first moving member, a driven pulley installed on the second moving member to be spaced apart from the driving pulley, the driving pulley and the driven pulley, and the injection unit It may be configured to include a moving member for the injection unit to be installed.

The second driving unit may include a second driving motor installed on the first moving member so that the output shaft is connected to the driving pulley.

On the other hand, the injection unit is installed on the injection unit moving member and includes a injection rod formed with a plurality of injection holes, a first sensing means for sensing the injection rod; a second sensing means for detecting the degree of growth of the plant; and a control unit for controlling driving of the first driving unit and the second driving unit according to the sensing signal applied from the first sensing unit and the second sensing unit.

The injection rod may be configured to have an adjustable length.

On the other hand, the smart cultivation system having a height-adjustable utility supply device according to the present invention may further include a sealing means installed in the vegetation frame to selectively cover the planting part of the plant.

Preferably, the sealing means may be configured to include a accommodating part, and a planar body in which a distal end which is installed and withdrawn from the accommodating part is bound to the injection rod.

The accommodating unit includes: a accommodating body having an opening; a winding shaft installed in the receiving body and wound around the planar body; and a return member that reversely rotates the winding shaft so that the planar body is re-introduced into the interior of the receiving body in a state in which the planar body is withdrawn.

According to the smart cultivation system equipped with a height-adjustable utility supply device according to the present invention, it is possible to supply water, nutrient solution, carbon dioxide, etc. necessary for plant growth while automatically moving the spraying unit, as well as to the growth stage of plants or types of plants. Since the height of the spraying part can be adjusted to suit, it has the effect of cultivating plants more conveniently and effectively.

The smart cultivation system with a height-controlled utility supply device according to the present invention is further provided with a sealing means capable of sealing the cultivation area of the plant, thereby selectively sealing the planting space of the plant, thereby synergizing the carbon dioxide fertilization effect, and controlling the humidity. It has the effect of more effectively cultivating plants because it can be carried out.

1 is a perspective view showing the overall appearance of a smart cultivation system equipped with a height-adjustable utility supply device according to a first embodiment of the present invention;
2 is a perspective view showing a part of a smart cultivation system equipped with a height-adjustable utility supply device according to a first embodiment of the present invention;
Figure 3a is an enlarged exploded perspective view of part A of Figure 1;
Figure 3b is an enlarged perspective view of part B of Figure 1;
4 is a perspective view for explaining the operating state of a smart cultivation system having a height-adjustable utility supply device according to the first embodiment of the present invention;
5 is a view showing a state in which a smart cultivation system equipped with a height-adjustable utility supply device according to a first embodiment of the present invention is installed on a wall;
6 is a perspective view showing the overall appearance of a smart cultivation system having a height-adjustable utility supply device according to a second embodiment of the present invention;
7 is a perspective view showing a separated part of a smart cultivation system having a height-adjustable utility supply device according to a second embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

On the other hand, in each drawing, a detailed description of a configuration that can be easily recognized by a person skilled in the art from the general description and an action and effect thereof will be simplified or omitted. In addition, since the present invention is characterized by a smart cultivation system equipped with a height-adjustable utility supply device, it is illustrated and described mainly related parts, and the description of the remaining parts will be simplified or omitted.

1 is a perspective view showing the overall appearance of a smart cultivation system having a height-adjustable utility supply device according to a first embodiment of the present invention, and FIG. 2 is a height-adjustable utility supply device according to a first embodiment of the present invention. A perspective view showing a part of the smart cultivation system separated, FIG. 3A is an enlarged exploded perspective view of part A of FIG. 1, and FIG. 3B is an enlarged perspective view of part B of FIG.

1 to 3b, a smart cultivation system equipped with a height-adjustable utility supply device according to a first embodiment of the present invention is a vegetation frame (1), a spraying unit (2), a first spraying unit moving device (3) ) and the second injection unit moving device 4 are provided, and as well as moving the injection unit 2, which is a supply device for supplying water, nutrient solution, carbon dioxide, etc. necessary for plant growth, in the front and rear directions, the growth of plants It has a major characteristic in that it is configured to be able to adjust the height of the injection unit 2 according to the stage or type.

The vegetation frame 1 is a component provided with a planting space in which plants are planted and grown, and a frame member 11 formed in a substantially rectangular frame shape, and a base plate 12 installed to form a planting space inside the frame member 11 ), a reinforcing material 13 installed on the frame member 11 and the base plate 12, divides the planting space into a plurality of spaces, and is provided with a plurality of planting plates 14 on which plants are planted.

And, a frame fixing bracket 15 that can be fixed to an installation surface such as a wall surface is coupled to the frame member 11 and the base plate 12, and the planting plate 14 is raised so that the planted plants are not easily separated. It is installed obliquely.

In addition, the vegetation frame 1 shown in FIG. 1 is only one exemplary form configured to be installed on the wall, and various forms without special restrictions depending on conditions such as the area or height of the planting place or the type of planting plants, etc. can be formed with

On the other hand, the spraying unit 2 is a component for supplying water, nutrient solution, carbon dioxide (Co2), etc. necessary for plant cultivation to the plant cultivation area, and is movably installed in the vegetation frame 1 .

The spraying part 2 is formed of a spraying rod 21 having a plurality of spraying holes formed at regular intervals, and the spraying rod 21 is composed of a pipe having a hollow part, and is formed to a length about the width of the vegetation frame 1, there is.

In addition, although the injection port is formed in a form in which a fine hole is perforated in the injection rod 21, it may also be configured in a structure in which a separate injection nozzle is installed.

And, the injection rod 21 is installed on the injection unit moving member 413 of the second injection unit moving device 4 through the injection unit fixing bracket 22, and at one end thereof, water, nutrient solution, carbon dioxide ( A supply hose 23 for supplying Co2) and the like is connected.

On the other hand, the injection rod 21 may be configured in a structure in which the length can be adjusted so that it can be used interchangeably with the vegetation frame 1 of various sizes.

For example, the injection rod 21 may have a shape similar to that of a fishing rod with adjustable length, and may be configured in a form in which a plurality of rod-shaped members having different outer diameters are assembled to each other so as to be retractable.

In addition, the supply hose 23 includes a pump (not shown) that supplies water, nutrient solution, carbon dioxide (Co2), etc. necessary for plant cultivation, a water storage tank (not shown) connected to the suction line of the pump, and a nutrient solution storage tank ( Not shown), a carbon dioxide storage tank (not shown), etc. may be provided.

On the other hand, the first injection unit moving device 3 is configured in the vegetation frame (1) to move the injection unit (2) along the growth direction of the plant, which is the front of the vegetation frame (1) in the figure, the vegetation frame ( It is composed of a first moving part 31 installed in 1) and protruding and retracting, and a first driving part 32 applying a driving force to the first moving part 31 .

The first moving part 31 is a first guide rail member 311 installed to face one side and the other side of the frame member 11 corresponding to the left and right sides of the upper part of the vegetation frame 1, on the left and right sides of the lower part of the vegetation frame (1) A second guide rail member 312 installed to face the corresponding edge member 11 on one side and the other side, a first movable member 313 movably installed on the first guide rail member 311, and a second guide Consists of a second moving member 314 that is movably installed on the rail member 312.,

The first and second guide rail members 311 and 312 have a 'u'-shaped cross-sectional plate-shaped member with a sliding surface formed on the bottom so that the first and second moving members 313 and 314 move, as shown in FIG. 3A. As coupled to (11), a '-'-shaped locking piece 311b for preventing separation is formed at the protruding tip.

The first and second moving members 313 and 314 are inserted into the first and second guide rail members 311 and 312 and are formed in the shape of a rectangular plate so that they can be moved forward and backward on the sliding surface. A stopper pin 313b to be caught is provided.

The first driving unit 32 includes a rack 321 formed along the longitudinal direction of the first moving member 313 and the second moving member 314, a driving gear 322 meshed with the rack 321, a driving gear ( It consists of a first driving motor 323 to which 322 is coupled. Here, the first driving motor 323 is installed on the motor bracket 311c formed on the first and second guide rail members 311 and 312 and may constitute a geared motor having a reduction gear.

On the other hand, the second injection unit moving device 4 is configured to move the injection unit 2 along a direction orthogonal to the growth direction of the plant, which is the vertical direction of the vegetation frame 1, as shown in FIG. As that, it is installed in the first moving unit 31 and is composed of a second moving unit 41 to which the injection unit 2 is connected, and a second driving unit 42 for applying a driving force to the second moving unit 41 , there is.

The second moving part 41 is a driving pulley 411 disposed on the first moving member 313 as shown in FIGS. 2 and 3A and a second moving member 314 spaced apart from the driving pulley 411. It is installed on the driven pulley 412, the driving pulley 411 and the driven pulley 412 installed in the injection unit 2 is composed of the moving member 413 is installed. Here, the driving pulley 411 and the driven pulley 412 are configured as a timing pulley.

The injection unit moving member 413 is installed on the driving pulley 411 and the driven pulley 412 to perform a function of directly moving the injection unit 2, and the injection unit 2 is coupled to the outer surface. It consists of a timing belt.

The above-described second moving part 41 is configured in a belt power transmission method consisting of a timing pulley and a timing belt connected to the timing pulley, but is configured in a chain power transmission method consisting of a plurality of sprockets and a chain connected to the sprocket. it might be

The second driving unit 42 is installed on the first moving member 313 so that the output shaft is connected to the driving pulley 411 , and may constitute a geared motor having a speed reducer.

On the other hand, the smart cultivation system equipped with a height-adjustable utility supply device according to the first embodiment of the present invention is configured with a first detection means (not shown) such as a proximity sensor capable of detecting the spray rod 21 .

The first sensing means (not shown) is installed on the first moving member 313 and the second moving member 314 to apply an electric signal to the control unit (not shown) when the injection rod 21 is in proximity to the control unit. In accordance with the set control algorithm, it is possible to prevent damage or malfunction due to excessive raising or lowering of the injection rod by driving control and driving stop operation for the forward and reverse rotational operations of the second driving unit 42 in advance.

And, the smart cultivation system equipped with a height-adjustable utility supply device according to the first embodiment of the present invention is configured with a second sensing means (not shown) such as a proximity sensor that can detect a growth degree such as the height of a plant. there is.

The second sensing means (not shown) is installed on the spray rod 21 and applies an electric signal to the control unit (not shown) when the plant is in proximity. By driving the driving motor 323 forward and reverse, the height of the injection rod can be adjusted.

Hereinafter, the operation of the smart cultivation system having a height-adjustable utility supply device according to a first embodiment of the present invention will be briefly described.

Figure 4 is a perspective view for explaining the operating state of the smart cultivation system having a height-adjustable utility supply device according to the first embodiment of the present invention, Figure 5 is a height-adjustable utility supply device according to the first embodiment of the present invention It is a diagram showing the state in which a smart cultivation system equipped with

4 and 5, the smart cultivation system equipped with the above-mentioned height-adjustable utility supply device can be installed on a horizontal surface or an inclined surface to grow plants, but the planting plate 14 of the vegetation frame 1 ) is installed inclined upward, so as shown in FIG. 5, it can be installed on a vertical wall such as a building or civil structure to grow plants such as crops.

In this way, if a smart cultivation system is installed on a vertical wall such as a building or civil structure, it is possible to increase the production of crops without occupying a separate land, and in the case of a city, it is possible to improve the aesthetics of the city, as well as It has the advantage of reducing air pollution due to the purification action of

On the other hand, if the operation process of the smart cultivation system installed on the wall is briefly described as described above, when the second driving unit 42 is driven forward and backward according to a user's input signal or a control signal preset to the control unit (not shown), the driving pulley (411) is rotated forward and reverse, and as the injection unit moving member 413 is moved, the injection rod 21 coupled thereto is raised and lowered. In this state, water required for plant cultivation is pumped by a pump (not shown). When it is supplied through the supply hose 23 by force, it is ejected toward the planted plant as it is ejected in the form of mist through the injection hole formed in the injection rod 21 .

And, when the injection rod 21 approaches the upper end of the vegetation frame 1, the second driving unit 42 is rotated in the reverse direction according to the signal sensed through the first detection means (not shown) to move the injection rod downward. water can be supplied.

In this way, while rotating the second driving unit 42 in the forward and reverse directions, fertilization of nutrient solution or carbon dioxide in addition to water can be performed through the spray rod 21, so that plants can be grown conveniently.

On the other hand, if the cultivation process as described above is performed for a certain period of time, the height of the plant is increased and an interference phenomenon is induced when the injection rod 21 is moved, so that the grower operates the first driving motor 323 manually or According to a signal sensed by a second sensing means (not shown) for detecting the height of the plant, the first driving motor 323 may be operated under the control of the controller to increase the position of the spray rod.

More specifically, when the first driving motor 323 is operated, the driving gear 322 is rotated and the rack 321 meshed with the driving gear 322 is moved in a straight line, and the first driving gear 322 is formed. The first and second moving members 313 and 314 protrude by a set height while moving along the sliding surfaces of the first and second guide rail members 311 and 312 .

As such, when the first and second moving members 313 and 314 protrude to the front, the second moving unit 41 also protrudes, so that the protrusion height of the injection rod 21 bound to the injection unit moving member 413 is increased, so that the plant and Since it can move freely without contact, the spraying action that supplies water and nutrient solution can be safely performed without causing damage to the plant.

Hereinafter, another embodiment according to the present invention will be described, but detailed descriptions of components similar to those of the above-described first embodiment will be omitted, and components having differences will be mainly described. In addition, in the following other embodiments, as long as it is an employable structure among the components shown in the first embodiment or the components shown in different embodiments, the detailed description or drawings will be omitted as it may be selectively applied.

6 is a perspective view showing the overall appearance of a smart cultivation system having a height-adjustable utility supply device according to a second embodiment of the present invention, and FIG. 7 is a height-adjustable utility supply device according to a second embodiment of the present invention. It is a perspective view showing a part of the smart cultivation system separated.

6 and 7, the smart cultivation system equipped with a height-adjustable utility supply device according to the second embodiment of the present invention is a vegetation frame (1), a spraying unit (2), a first spraying unit moving device (3) ), the second injection unit moving device (4) is provided, the main feature is that the sealing means (5) that can selectively seal the cultivation area of the plant is further configured.

The sealing means 5 is a component installed in the vegetation frame 1 so as to selectively cover the planting part of the plant, and the receiving part 51 and the receiving part are installed so as to be retractable from the receiving part and the distal end part which is drawn out is a spray rod ( 21) is composed of a planar body 52 bound to.

The accommodating part 51 is a component in which an accommodating space is formed therein and an opening 512 through which the planar body 52 is drawn out and drawn in is formed. It can be configured, but in this embodiment, the receiving unit cover 55 coupled to both sides of the receiving body 511 formed in a substantially cylindrical shape, and the receiving unit fixing bracket 513 provided to be installed in the vegetation frame 1 is provided is structured.

In addition, the receiving part 51 may have a winding shaft 53 on which the planar body 52 is wound therein, and when the pulling force is relieved in a state in which the planar body 52 wound around the winding shaft 53 is withdrawn. A return member 54 for reversely rotating the take-up shaft 53 is provided so as to be drawn back into the payer 51 . Here, the return member 54 can be applied without any particular limitation as long as the operation of rewinding the planar body 52 is possible.

On the other hand, the planar body 52 is configured to be drawn out and drawn in in a state wound in the form of a roll as a planar member inserted to be retractable in the receiving part (1).

And, since the planar body 52 can transmit sunlight, it is formed as a transparent planar body such as transparent vinyl, and a binding member 522 such as a hook that is bound to the spray rod 21 is provided at the outer end.

In addition, although not shown in FIGS. 6 and 7, the planar body 52 is stretched in the form of a curtain along both edges of the vinyl paper wound in a roll form so that the sealing property can be maintained even when the arrangement height of the spray rod is increased. It may also be formed in a structure provided with a wing vinyl paper that is arranged to be heavy.

Hereinafter, the operation of the smart cultivation system with a height-adjustable utility supply device according to the second embodiment of the present invention as described above will be briefly described.

The smart cultivation system with a height-adjustable utility supply device according to the second embodiment of the present invention automatically moves the spraying unit 2 as in the first embodiment described above, while water, nutrient solution, carbon dioxide, etc. required for plant growth It is possible to effectively supply the plant, so the cultivation and management process of plants can be carried out easily.

In particular, since the smart cultivation system with a height-adjustable utility supply device according to the second embodiment of the present invention further includes a sealing means 5 that can selectively close the cultivation area of plants, planting of plants when necessary By sealing the space, plants can be grown more effectively.

For example, binding the lead-out tip of the planar body 52 to the injection rod 21, and operating the second driving unit 42 to move the injection rod 21 downward to cover the planting space of the plant while simultaneously moving the injection rod When fertilization is performed so that carbon dioxide is ejected through the nozzle of (21), the planting space of the plant is automatically closed, so that the diffusion and outflow of carbon dioxide into the atmosphere can be minimized, thereby increasing the fertilization effect.

Although the configuration and operation of a smart cultivation system having a height-adjustable utility supply device according to the first embodiment of the present invention described above has been described, this is an example and those of ordinary skill in the art can relate to the technical spirit of the present invention It will be understood that substitutions and modifications may be made to some of the above-described embodiments without departing from the scope of the present invention.

Therefore, it should be understood that the protection scope of the present invention extends to the invention described in the claims and equivalents thereof.

1: Vegetation frame 11: Border member
12: base plate 13: reinforcing material
14: food plate 2: spray unit
21: injection rod 3: first injection unit moving device
31: first moving part 311: first guide rail member
312: second guide rail member 313: first moving member
314: second moving member 32: first driving unit
321: rack 322: drive gear
323: first driving motor 4: second injection unit moving device
41: second moving part 411: driving pulley
412: driven pulley 413: injection unit moving member
5: sealing means 51: storage unit
52: facet

Claims (9)

Vegetation frame provided with a planting space for plants;
a spraying unit movably installed in the vegetation frame;
a first injection unit moving device configured in the vegetation frame to move the injection unit along the growth direction of the plant;
a second injection unit moving device configured to move the injection unit in a direction perpendicular to the growth direction of the plant; and
It includes a sealing means installed in the vegetation frame to selectively cover the planting part of the plant,
The injection unit includes a injection rod formed with a plurality of injection ports,
The sealing means is a smart cultivation system with a height-adjustable utility supply device, characterized in that it comprises a accommodating part, and a planar body that is installed and withdrawn from the accommodating part and the distal end is bound to the injection rod.
The method of claim 1,
The first injection unit moving device includes a first moving unit installed in the vegetation frame and protruding and retracting, and a first driving unit for applying a driving force to the first moving unit,
The second injection unit moving device may include: a second moving unit installed in the first moving unit and connected to the injecting unit; and a second driving unit for applying a driving force to the second moving unit.
3. The method of claim 2,
The first moving part is a first guide rail member installed to face one side and the other side of the upper part of the vegetation frame, a second guide rail member installed to face one side and the other side of the lower part of the vegetation frame, the first guide rail member Containing; a first moving member that is movably installed, and a second moving member that is movably installed on the second guide rail member;
The first driving unit comprises a rack formed along the longitudinal direction of the first moving member and the second moving member, a driving gear meshed with the rack, and a first driving motor to which the driving gear is coupled. Smart growing system with height adjustable utility feeder.
4. The method of claim 3,
The second moving part, a driving pulley disposed on the first moving member, a driven pulley installed on the second moving member to be spaced apart from the driving pulley, the driving pulley and the driven pulley installed on the driven pulley and the injection unit is installed Including a master moving member,
The second drive unit smart cultivation system with a height-adjustable utility supply device, characterized in that it comprises a second drive motor installed on the first moving member so that the output shaft is connected to the drive pulley.
5. The method of claim 4,
The injection unit includes a injection rod installed on the injection unit moving member and formed with a plurality of injection ports,
a first sensing means for sensing the injection rod; a second sensing means for detecting the degree of growth of the plant; and a control unit for controlling the driving of the first driving unit and the second driving unit according to the sensing signal applied from the first sensing means and the second sensing unit. system.
The method of claim 1,
The spray rod is a smart cultivation system equipped with a height-adjustable utility supply device, characterized in that it has a structure that can be adjusted in length.
delete delete 2. The method of claim 1
The storage unit,
a receiving body having an opening;
a winding shaft installed in the receiving body and wound around the planar body; and
Smart cultivation system with a height-adjustable utility supply device, characterized in that it includes a return member for reversely rotating the winding shaft so that the planar body is drawn back into the interior of the housing body.

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